ML18122A322

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Submittal of 2017 Annual Radioactive Effluent Release Report
ML18122A322
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 04/30/2018
From: Hughes D
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML18122A322 (175)
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Text

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 April 30, 2018 10 CFR 50.4 10 CFR 50.36a 10 CFR 50 Appendix I A TIN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296

Subject:

2017 Annual Radioactive Effluent Release Report In accordance with the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3, Technical Specifications Section 5.6.3, the Tennessee Valley Authority is submitting the BFN Annual Radioactive Effluent Release Report for the period January through December 2017. This document is in conformance with Title 10 of the Code of Federal Regulations (10 CFR) 50.36a and 10 CFR 50, Appendix I, Section IV. B.1. to Enclosure 1 documents deviations which have occurred from Offsite Dose Calculation Manual (ODCM) controls and surveillance requirements. Attachment 2 to provides information on radiological effluent instrumentation inoperable for greater than 30 days.

There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact Jamie Paul, Site Licensing Manager, at (256) 729-7533.

R(\~

D. L. Hughes Site Vice President

U.S. Nuclear Regulatory Commission Page 2 April 30, 2018

Enclosure:

2017 Annual Radioactive Effluent Release Report cc (w/ Enclosure):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant

ENCLOSURE Browns Ferry Nuclear Plant Units 1, 2, and 3 2017 Annual Radioactive Effluent Release Report See Enclosed

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT TABLE OF CONTENTS Section Title Page Number Supplemental Information E-3 E-8 Gaseous Effluents E-9 E-16 Liquid Effluents E-17 E-19 Solid Waste E-20 E-27 Radiological Impact E-28 E-44 Meteorological Data E-45 E-168 - Deviations from ODCM Controls and Surveillance Requirements E-169 - Inoperable Radiological Effluent Instrumentation Report E-170 Groundwater Protection Program E-171 E-172 Tables Page Number Table 1A, Gaseous Effluents - Summation of All Releases E-9 Table 1B, Gaseous Effluents - Elevated Releases E-10 E-11 Table 1C, Gaseous Effluents - Ground Level Releases E-12 E-13 Table 1D, Gaseous Effluents - Mixed Mode Releases E-14 E-16 Table 2A, Liquid Effluents - Summation of All Releases E-17 Table 2B, Liquid Effluents E-18 E-19 Table 3, Solid Waste and Irradiated Fuel Shipments E-20 E-27 Table 4, Radiological Impact, Doses from Airborne Effluents E-35 E-38 Table 5, Radiological Impact, Doses from Liquid Effluents E-39 E-42 Table 5A, Radiological Impact, Total Doses from I-131 E-43 Water Ingestion Pathway Table 6, Radiological Impact, Total Dose from Fuel Cycle E-44 Table 7A, Meteorological Data, Joint Frequency Distribution E-45 E-52 Ground Level Releases, First Quarter E-1

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT TABLE OF CONTENTS Tables Page Number Table 7B, Meteorological Data, Joint Frequency Distribution E-53 E-60 Ground Level Releases, Second Quarter Table 7C, Meteorological Data, Joint Frequency Distribution E-61 E-68 Ground Level Releases, Third Quarter Table 7D, Meteorological Data, Joint Frequency Distribution E-69 E-76 Ground Level Releases, Fourth Quarter Table 8A, Meteorological Data, Joint Frequency Distribution E-77 E-91 Split Level Releases, First Quarter Table 8B, Meteorological Data, Joint Frequency Distribution E-92 E-106 Split Level Releases, Second Quarter Table 8C, Meteorological Data, Joint Frequency Distribution E-107 E-121 Split Level Releases, Third Quarter Table 8D. Meteorological Data, Joint Frequency Distribution E-122 E-136 Split Level Releases, Fourth Quarter Table 9A, Meteorological Data, Joint Frequency Distribution E-137 E-144 Elevated Releases, First Quarter Table 9B, Meteorological Data, Joint Frequency Distribution E-145 E-152 Elevated Level Releases, Second Quarter Table 9C, Meteorological Data, Joint Frequency Distribution E-153 E-160 Elevated Level Releases, Third Quarter Table 9D, Meteorological Data, Joint Frequency Distribution E-161 E-168 Elevated Level Releases, Fourth Quarter Table 10, Groundwater Data E-172 E-2

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

1. Regulatory and BFN ODCM Limits
a. Fission and Activation Gases in Gaseous Effluent:

The release of fission and activation gases is regulated by the dose limits of Title 10 of the Code of Federal Regulations (10 CFR) 50 Appendix I and Browns Ferry Nuclear Plant (BFN) Offsite Dose Calculation Manual (ODCM). The air dose to areas at and beyond the site boundary due to noble gases released in gaseous effluents per unit shall be limited during any calendar quarter to 5 millirad (mrad) for gamma radiation and 10 mrad for beta radiation; and during any calendar year to 10 mrad for gamma radiation and 20 mrad for beta radiation.

b. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents:

The release of iodines and particulates in gaseous effluent is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluent released per unit to areas at and beyond the site boundary shall be limited to any organ during any calendar quarter to 7.5 millirem (mrem), and during any calendar year to 15 mrem.

c. Liquid Effluents:

The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. The doses or dose commitment to a member of the public from radioactive materials in liquid effluents released from each unit to unrestricted areas shall be limited during any calendar quarter to 1.5 mrem to the total body and 5 mrem to any organ and during any calendar year to 3 mrem to the total body and 10 mrem to any organ.

2. Limitation on Dose Rate
a. Fission and Activation Gases in Gaseous Effluent:
1. The instantaneous release rate of fission and activation gases is based on the dose rate limits of 10 CFR 20.1301 and the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary due to noble gases released in gaseous effluents from the site shall be limited to 500 mrem per year to the total body and 3000 mrem per year to the skin.
2. The BFN ODCM Section 7.2 determines the maximum noble gas release rate.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

2. Limitation on Dose Rate (Continued)
b. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents:
1. The instantaneous release rate of particulates and iodines is regulated by the dose rate limits of the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary, due to I-131, I-133, H-3, and particulates with half-lives greater than eight days in gaseous effluent released from the site, shall be limited to 1500 mrem per year to any organ.
2. The BFN ODCM Section 7.3 determines the maximum particulate and iodine dose rates.
c. Liquid Effluents:
1. The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20.1001-20.2402, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases
2. For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 µCi per milliliter (ml) total activity.
3. Average Energy The BFN ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/year to the skin. The use of dose rate is in accordance with NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants.

Since the release rate is not used for effluent control, the average beta and gamma energies (E) for gaseous effluents discussed in Regulatory Guide 1.21, Measuring, Evaluation, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants, are not applicable and not included in this report.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

4. Measurements and Approximations of Total Radioactivity
a. Fission and activation gases:
1. Noble gases in the building vent and stack (elevated) gaseous effluents are continuously monitored. The flow rate of the stack is continuously monitored and the building vent effluent flow rates are calculated once a shift based on the configuration of operating exhaust fans. The vent flow is calculated for each release. Gas grab samples of the stack are taken and analyzed weekly. Gas grab samples of in-service vents are taken and analyzed monthly. The specific noble gas activity concentrations and total volume of the gases are used to calculate the total Curies of noble gases released.
2. The tritium concentration is determined by the analysis of a monthly grab sample for each release point.
b. Iodines and Particulates:
1. Iodines and particulates are continuously sampled on impregnated charcoal filters and particulate filters, respectively. The charcoal and particulate samples are replaced at least weekly and analyzed to determine specific activity concentrations. The specific activity concentrations and vent flow rate data are used weekly to verify that release rate limits were not exceeded. The specific activity concentrations and total volume of gaseous effluent are used on a monthly basis to determine the total curies of each particulate and iodine released during the month.
2. The gross alpha concentration is determined by analysis of a monthly particulate filter composite sample, and strontium-89 and strontium-90 are determined by analysis of a quarterly particulate filter composite sample for each release point.
c. Liquid effluents:
1. The gamma ray emitting radionuclide concentrations are determined for each batch by gamma ray spectroscopy analysis of a grab sample. The allowable release rate is calculated for each batch based upon the known dilution flow.

The flow rate of the liquid effluent is continuously monitored and the total volume released in each batch is determined. The total gamma activity released in each batch is determined by multiplying the radionuclide concentrations by the total volume discharged. The total gamma activity released during the month is then determined by summing the gamma activity content of each batch discharged during the month.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

4. Measurements and Approximations of Total Radioactivity (Continued)
c. Liquid effluents (Continued):
2. The gross alpha and tritium concentrations are measured on a monthly composite sample. The strontium-89, strontium-90, and iron-55 are measured on a quarterly composite sample.
d. The Radioactive Gaseous and Liquid Waste Monitoring Sampling and Analysis Program is specified in ODCM Sections 1/2.2.1 and 1/2.2.2. No liquid or gaseous concentration or dose limits were exceeded.
5. Batch Releases Quarter Quarter Quarter Quarter A. Liquid Units 1 2 3 4
1. Number of batches released Each 2 1 0 5
2. Total time for batches released Minutes 780.00 180.00 0 2057.00
3. Maximum time period for a batch release Minutes 420.00 180.00 0 505.00
4. Average time period for a batch release Minutes 390.00 180.00 0 411.40
5. Minimum time period for a batch release Minutes 360.00 180.00 0 295.00
6. Average BFN beach flow during period of ft3/sec 44,432 50,741 36,086 39,131 release into the river stream B. Gaseous None E-6

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

6. Abnormal Releases
a. Liquid
1. Number of releases: 5
2. Total activity released (Curies):

Destination Nuclide Quarter 1 Quarter 2 Quarter 3 Quarter 4 Leak to River H-3 5.86E-02 4.79E-02 4.72E-02 2.33E-01 F-18 3.615E-06 2.64E-05 Na-24 1.454E-06 Mn-54 1.726E-07 Mn-56 6.662E-07 Co-58 4.145E-07 Co-60 1.200E-06 Zn-65 4.221E-07 Zn-69m 2.782E-07 As-76 4.183E-07 Nb-97 5.356E-08 I-134 2.214E-07 Xe-133 3.634E-07 Xe-135 3.066E-06

b. Gaseous
1. Number of releases: 0
6. Abnormal Releases (Continued)

Summary of Abnormal/Unplanned Releases The release of radioactive material to the environment from BFN has been a small fraction of the 10 CFR 20 Appendix B and 10 CFR 50 Appendix I limits. There were no limits exceeded as specified in 10 CFR 20 Appendix B and 10 CFR 50 Appendix I.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information Five abnormal liquid releases occurred in 2017.

1. Three of the abnormal releases were from the U-1, U-2, and U-3 Station Sumps.

These releases occurred throughout 2017 and were the result of several identified sources including multiple steam leaks which occurred in the Steam Jet Air Ejector Rooms and Moisture Separator Rooms. (CRs 1256412, 1251481, 1249698, 1251479, 1256409, 1253461, 1282946, 1308933).

2. Leak from Condensate Head Tank valve 0-RTV-002-0738 (CR 1293308, 1292452) On 5/5/2017, Valve 0-RFV-002-0738, VAC Relief VLV CNDS HEAD TANK, stuck open and drained Condensate water onto Refuel Floor and scattered water onto duct work overhead and down the wall. The leak exited the Reactor Building and drained into U-1 Air Intake Plenum which drains to the Intake Channel. The estimated total water that leaked outside to the environment was less than 50 gallons.
3. Auxiliary Boiler C Feedwater was sampled on 1/28/17. The tritium analysis was greater than the Lower Limit of Detection(LLD). A resample confirmed the original result. Auxiliary Boilers drain to the U-1 Station Sump (CR 1255845).
7. Missed Compensatory Samples During the reporting period , January 1, 2017 through December 31, 2017, there were no missed compensatory samples.
8. Changes to the Radwaste System and Changes to the Process Control Program In calendar year 2017, BFN had one permanent change to the Radwaste System and no permanent change to the Process Control Program.

In 2017, BFN began a Radwaste Upgrade project to replace the Thermex System with Avantec Ultrex System. Under the project, BFN removed Floor Drain Sample Tank (FDST) A-2 and equalizing header under DCN 71436.

9. Revisions to the Offsite Dose Calculation Manual (ODCM)

During 2017 there were no revisions made to the Offsite Dose Calculation Manual (ODCM).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS TABLE 1A Page 1 of 1 Gaseous Effluents - Summation of All Releases Error Units Quarter 1 Quarter 2 Quarter 3 Quarter 4  %

A. Fission and Activation Gases

1. Total Releases Curies ** ** ** ** 45
2. Average Release Rate for Period µCi/sec ** ** ** **
3. Percent of Applicable Limit  % **** **** **** ****

B. Iodines

1. Total Iodine-131 Curies 2.276E-04 4.251E-04 5.284E-04 5.721E-04 36
2. Average Release Rate for Period µCi/sec 2.927E-05 5.407E-05 6.648E-05 7.197E-05
3. Percent of Applicable Limit  % **** **** **** ****

C. Particulates

1. Particulates with half-lives

> eight days Curies 6.746E-04 1.207E-04 8.591E-04 7.112E-04 35

2. Average Release Rate for Period µCi/sec 8.676E-05 1.535E-05 1.081E-04 8.947E-05
3. Percent of Applicable Limit  % **** **** **** ****
4. Gross Alpha Radioactivity Curies ** 7.769E-06 ** **

D. Tritium

1. Total Release Curies 8.302E+01 6.655E+01 1.923E+02 1.235E+02 21
2. Average Release Rate for Period µCi/sec 1.068E+01 8.464E+00 2.419E+01 1.553E+01
3. Percent of Applicable Limit  % **** **** **** ****

E. Carbon-14***

1. Total Release Curies 7.638 9.994 10.139 10.195
2. Total as CO2 Curies 7.256 9.495 9.632 9.685
  • - Includes Activity from Abnormal Release
    • - Not Detected.
      • - Estimated using EPRI methodology provided in EPRI Report 1021106.
        • - Applicable Limits are expressed in terms of dose. See Radiological Impact Section.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1B Page 1 of 2 Gaseous Effluents - Elevated Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 7.40E-05 8.12E-05 8.66E-05 5.06E-05 I-133 2.25E-04 2.98E-04 3.66E-04 1.99E-04 I-135 ** ** ** **

Total for Period 2.99E-04 3.80E-04 4.53E-04 2.49E-04

    • - Not Detected.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1B (Continued)

Page 2 of 2 Gaseous Effluents - Elevated Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Sr-89 1.59E-05 1.43E-05 2.53E-05 1.26E-05 Sr-90 ** ** ** **

Cs-134 ** ** ** **

Cs-137 ** ** ** **

Cs-138 3.07E-03 1.44E-02 1.26E-02 2.12E-02 Ba-140 1.67E-06 6.29E-06 7.64E-06 1.10E-05 La-140 ** 1.78E-06 1.15E-06 5.89E-06 Y-91m 8.24E-05 7.80E-05 1.18E-04 1.42E-04 Co-60 3.44E-05 1.59E-06 ** **

Ba-139 1.28E-02 2.21E-02 1.95E-02 2.57E-02 Co-58 5.79E-06 ** **

Cr-51 2.07E-05 ** **

Mn-54 3.20E-06 ** **

Au-199 5.09E-05 2.04E-05 1.57E-05 1.63E-04 Total for Period* 1.61E-02 3.67E-02 3.22E-02 4.72E-02

4. Tritium 1.94E+00 3.18E+00 9.98E+00 4.89E+00
5. Carbon-14*** 7.256 9.495 9.632 9.685
  • - Includes all nuclides, even those with less than an eight day half-life.
    • - Not Detected.
      • - Estimated using EPRI methodology provided in EPRI Report 1021106.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1C Page 1 of 2 Gaseous Effluents - Ground Level Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 2.17E-05 3.35E-05 1.70E-05 7.44E-05 I-133 7.62E-05 1.23E-04 1.10E-04 3.59E-04 I-135 ** ** ** **

Total for Period 9.79E-05 1.56E-04 1.27E-04 4.34E-04

    • - Not Detected.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1C (Continued)

Page 2 of 2 Gaseous Effluents - Ground Level Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Sr-89 ** ** ** **

Sr-90 ** ** ** **

Cs-134 ** ** ** **

Cs-137 ** ** ** **

Ba-140 ** ** ** **

La-140 ** ** ** **

Co-60 8.13E-06 ** 1.18E-05 6.14E-06 Co-58 ** ** ** 5.70E-06 Y-91m ** ** ** 1.55E-05 Ba-139 6.71E-04 ** ** **

Total for Period* 6.79E-04 ** 1.25E-05 2.73E-05 Gross Alpha ** 5.16E-06 ** **

Tritium 3.29E+01 5.52E+00 1.91E+01 2.26E+01

  • - Include all nuclides even those with less than an eight day half-life.
    • - Not Detected.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D Page 1 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 1.32E-04 3.10E-04 4.25E-04 4.47E-04 I-133 1.26E-03 1.89E-03 3.06E-03 3.24E-03 I-135 ** ** ** **

Total for Period 1.39E-03 2.20E-03 3.49E-03 3.68E-03

  • - The Reactor Building and Radwaste Building are treated as split-level releases.
    • - Not Detected.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D (Continued)

Page 2 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates***

Sr-89 ** ** ** **

Sr-90 Cs-134 ** ** ** **

Cs-137 3.77E-06 2.93E-06 ** **

Ba-140 ** ** 6.99E-06 6.33E-05 La-140 ** ** ** 3.48E-05 Ag-110m 9.49E-06 ** ** 8.65E-05 Na-24 ** 5.12E-05 1.12E-03 8.24E-04 Mn-54 1.59E-05 1.16E-06 1.37E-04 3.54E-05 Cr-51 9.22E-05 ** 1.42E-05 **

Co-58 1.11E-05 ** 1.63E-04 5.69E-05 Co-60 3.82E-04 7.41E-05 3.94E-04 1.75E-04 Zn-65 1.54E-05 ** 8.18E-05 9.48E-05 Y-91m 2.71E-04 3.87E-04 5.68E-04 1.37E-03 Sr-91 ** ** 1.50E-04 4.11E-04 Sr-92 ** ** ** 3.55E-04 Ba-139 5.47E-03 6.04E-03 6.85E-03 2.17E-02 Au-199 4.44E-06 ** ** **

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D (Continued)

Page 3 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates***

Tc-99m ** ** ** 2.53E-06 Mo-99 ** ** ** 2.59E-06 Total for Period*** 6.27E-03 6.56E-03 9.49E-03 2.52E-02 Gross Alpha ** 2.61E-06 ** **

Tritium 4.82E+01 5.79E+01 1.63E+02 9.60E+01

  • - The Reactor Building and Radwaste Building are treated as split-level releases.
    • - Not Detected.
      • - Includes all nuclides, even those with less than an eight day half-life.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2A Page 1 of 1 Liquid Effluents - Summation of All Releases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

A. Fission and Activation Products (Does not include tritium, gases, alpha)

1. Total Release Curies 2.343E-03 1.22E-03**
  • 2.56E-04** 9 Average Diluted Concentration
2. Released During the Period µCi/ml 1.322E-09 2.98E-09**
  • 5.86E-011**
3. Percent of Applicable Limit  % *** *** *** ***

B. Tritium

1. Total Releases Curies 9.78E-01** 1.05E-01** 4.72E-02** 4.40E+00** 6 Average Diluted Concentration
2. Released During Period µCi/ml 5.52E-07** 2.57E-07** 4.72E-02** 1.01E-06**
3. Percent of Applicable Limit  % *** *** *** ***

C. Dissolved and Entrained Noble Gases

1. Total Releases Curies
  • 3.43E-06**
  • 2.018E-05 8 Average Diluted Concentration
2. Released During Period µCi/ml
  • 3.43E-06**
  • 4.617E-12
3. Percent of Applicable Limit  % *** *** *** ***

D. Gross Alpha Radioactivity

1. Total Releases Curies * * *
  • 48 Average Diluted Concentration
2. Released During Period µCi/ml * * *
  • E. Volume of Liquid Waste to Discharge Canal (Prior to dilution) Liters 2.545E+05 3.379E+04
  • 6.112E+05 3 F. Volume of Dilution Water for Period Liters 1.772E+09 4.088E+08
  • 4.369E+09 10 G. Total CCW Gigagal 2.32E+02 2.61E+02 2.65E+02 2.71E+02
  • - Not Detected.
    • - Includes activity from abnormal releases. Dilution flow was not determined for all abnormal releases.
      • - The applicable limit is expressed in terms of dose. See Radiological Impact Report.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2B Liquid Effluents

1. Fission and Activation Products Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 Sr-89
  • 1.97E-06 *
  • 8.85E-07 *
  • Cs-134 1.99E-05 1.30E-05 *
  • 8.25E-07 Co-58
  • 1.59E-05 *
  • 1.29E-04 Fe-55 6.52E-06 1.01E-04 *
  • Zn-65
  • 4.22E-07 *
  • Mn-54 4.82E-06 3.58E-05
  • 3.68E-06 Cr-51 * * *
  • Zr-95 * * *
  • Nb-95 * * *
  • Te-99m * * *
  • Ba-140 * * *
  • La-140 * * *
  • Ce-141 * * *
  • F-18 9.45E-04 3.62E-06
  • 2.640E-05 Ag-110m 6.86E-06 * *
  • Y-92 * *
  • 2.73E-05 Mn-56
  • 6.66E-07 *
  • Na-24 7.42E-04 1.45E-06 *
  • Sb-124 2.21E-06 * *
  • Sr-92 5.96E-06 * *
  • Zn-69m 6.32E-06 2.78E-07 *
  • As-76
  • 4.18E-07 *
  • Nb-97
  • 5.36E-08 *
  • E-18

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2B Liquid Effluents

1. Fission and Activation Products Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 I-134
  • 2.21E-07 *
  • Total for period 2.34E-03 1.22E-03
  • 2.56E-04
2. Dissolved and Entrained Gases Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 Xe-133
  • 3.63E-07
  • 1.35E-05 Xe-135
  • 3.07E-06
  • 6.68E-06 Total for Period
  • 3.43E-06
  • 2.02E-05
  • - Not Detected.

E-19

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 Page 1 of 8 Solid Waste and Irradiated Fuel Shipments A. Solid Waste Shipped Offsite for Burial or Disposal (not Irradiated Fuel)

1. Type of Waste Unit Jan - Jun 2017 July-Dec 2017 Error %
a. Spent resins, filters, filter sludge, m3 evaporator bottoms, etc. 8.76E+01 8.51E+01 +/- 25%

Ci 4.36E+02 1.40E+03 +/-25%

b. Dry compressible waste, m3 contaminated equipment, etc. 1.41E+03 8.11E+02 +/- 25%

Ci 1.62E+00 1.06E+00 +/- 25%

c. Irradiated Components, Control Rod blades & LPRMs with fission m3 chambers 0.00E+00 0.00E+00 +/- 25%

Ci 0.00E+00 0.00E+00 +/- 25%

d. Other - Combined Packages m3 0.00E+00 0.00E+00 +/- 25%

Ci 0.00E+00 0.00E+00 +/- 25%

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 2 of 8 Solid Waste and Irradiated Fuel Shipment

2. Estimate of Major Nuclide Composition
a. Spent resins, filters, filter sludge, evaporator bottoms, etc.

Nuclide Percentage Curies

1) H-3 2.88E-03 5.32E-02
2) C-14 2.62E-02 4.83E-01
3) CR-51 2.39E-02 4.40E-01
4) MN-54 6.34E+00 1.17E+02
5) FE-55 1.75E+01 3.22E+02
6) FE-59 3.30E-03 6.08E-02
7) CO-57 2.18E-02 4.02E-01
8) CO-58 2.13E+00 3.93E+01
9) CO-60 6.23E+01 1.15E+03
10) NI-63 4.40E-01 8.11E+00
11) ZN-65 6.83E+00 1.26E+02
12) SR-89 1.21E-02 2.23E-01
13) SR-90 6.72E-03 1.24E-01
14) ZR-95 1.06E-01 1.96E+00
15) NB-95 1.27E-01 2.34E+00
16) TC-99 1.30E-01 2.39E+00
17) AG-110M 2.31E+00 4.26E+01
18) SB-124 4.65E-04 8.57E-03
19) I-131 4.04E-04 7.46E-03
20) CS-134 3.88E-02 7.15E-01
21) CS-137 1.31E+00 2.41E+01
22) LA-140 1.17E-08 2.16E-07
23) CE-144 3.52E-01 6.49E+00
24) PU-238 3.04E-06 5.61E-05
25) PU-239 1.24E-06 2.28E-05 E-21

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 3 of 8 Solid Waste and Irradiated Fuel Shipment

2. Estimate of Major Nuclide Composition (Continued)
a. Spent resins, filters, filter sludge, evaporator bottoms, etc. (Continued)

Nuclide Percentage Curies

26) PU-241 7.91E-05 1.46E-03
27) AM-241 2.76E-06 5.09E-05
28) CM-232 1.97E-05 3.63E-04
29) CM-243 1.43E-05 2.64E-04 E-22

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 4 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued)
b. Dry, Compressible Waste, Contaminated Equipment, etc.

Nuclide Percentage Curies

1) H-3 3.36E-03 9.02E-05
2) C-14 2.86E-03 7.67E-05
3) CR-51 2.21E-01 5.93E-03
4) MN-54 3.61E+00 9.69E-02
5) FE-55 1.25E+01 3.36E-01
6) FE-59 5.82E-02 1.56E-03
7) CO-58 4.25E-01 1.14E-02
8) CO-60 6.97E+01 1.87E+00
9) NI-63 6.00E-01 1.61E-02
10) ZN-65 2.51E+00 6.73E-02
11) SR-89 1.19E-03 3.18E-05
12) SR-90 1.26E-02 3.37E-04
13) NB-95 3.84E-02 1.03E-03
14) TC-99 1.04E-02 2.80E-04
15) AG-110M 1.34E+00 3.60E-02
16) SB-125 2.31E-01 6.19E-03
17) CS-134 3.49E-01 9.37E-03
18) CS-137 8.20E+00 2.20E-01
19) CE-144 1.22E-01 3.26E-03
20) PU-238 4.74E-05 1.27E-06
21) PU-239 2.39E-05 6.41E-07
22) PU-241 2.61E-03 7.00E-05
23) AM-241 5.03E-04 1.35E-05
24) CM-242 2.32E-06 6.22E-08
25) CM-243 1.19E-04 3.18E-06 E-23

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 5 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued)
c. Irradiated Components, Control Rods, LPRMs with fission chambers Nuclide Percentage Curies None E-24

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 6 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued) d Other (Combined Packages)

Nuclide Percentage Curies None E-25

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 7 of 8 Solid Waste and Irradiated Fuel Shipments

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination Alaron Nuclear Services 3 Hittman Transport Services 2138 State Route 18 Energy Solutions 4 Hittman Transport Services 1790 Dock Street Energy Solutions LLC.

36 Hittman Transport Services (CLIVE)

Energy Solutions Services 25 Hittman Transport Services (Bear Creek)

Energy Solutions Inc.

1 Hittman Transport Services (Gallaher Road)

Omega Technical Services 18 Hubbard Trucking Inc.

Energy Solutions Services 3 Interstate Ventures (Bear Creek)

Omega Technical Services 7 Interstate Ventures Inc.

4 Interstate Ventures TOXCO, Inc.

Omega Technical Services 5 Specialty Transport Inc.

Energy Solutions (Bear 1 Tennessee Valley Authority-TVA Creek)

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 8 of 8 Solid Waste and Irradiated Fuel Shipments B. Irradiated Fuel Shipments Number of Shipments Mode of Transportation Destination 0

0 0 E-27

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

1. Introduction Potential doses to the maximum exposed individual and the population around Browns Ferry Nuclear Plant (BFN) are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). The methodology used to estimate dose for determining plant releases for the reporting period is specified in Sections 6 and 7 of the ODCM. Dispersion of radioactive effluents in the environment is estimated using meteorological data and river flow measured during the period. In this report, the doses resulting from releases are described and compared to limits established for BFN.
2. Dose Limits The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of radioactive effluents. These limits are set well below the Technical Specification limits which govern the concentrations of radioactivity and doses permissible in unrestricted areas. This ensures that radioactive effluent releases are As Low As Reasonably Achievable.

The air dose limits in areas at and beyond the Site Boundary due to noble gases released in gaseous effluents per unit are:

5 mrad per quarter and 10 mrad per year for gamma radiation.

- and -

10 mrad per quarter and 20 mrad per year for beta radiation.

The dose limits to a member of the public in an unrestricted area from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives > 8 days released in gaseous effluents for each unit are:

7.5 mrem per quarter and 15 mrem per year to any organ.

The dose or dose commitment to a member of the public from radioactive material in liquid effluents released to unrestricted areas are:

1.5 mrem per quarter and 3 mrem per year to the total body,

- and -

5 mrem per quarter and 10 mrem per year to any organ.

The limit for the total effective dose equivalent to an individual member of the public inside the site boundary is:

100 mrem per year.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

2. Dose Limits (Continued)

The Environmental Protection Agency limits for total dose to any member of the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are:

25 mrem per year to the whole body, 75 mrem per year to the thyroid,

- and -

25 mrem per year to any other organ.

3. Dose Calculations Estimated doses to members of the public are determined using computer models (the Gaseous Effluent Licensing Code, and the Quarterly Water Dose Assessment Code (QWATA)).

These models are based on guidance provided by the Nuclear Regulatory Commission (NRC) for determining the potential dose to individuals and populations living in the vicinity of the plant.

The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a maximum exposed individual. Some of the factors used in these calculations (such as ingestion rates) are maximum values to ensure conservative reporting data. The values chosen will tend to overestimate the dose. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 4, 5, and 6.

4. Doses From Airborne Effluents For airborne effluents, members of the public can be exposed to radiation from several sources:

direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently consumed by animals.

a. Airborne Release Points There are four monitored release points from BFN: the turbine building, the radwaste building, the reactor building, and the stack.

Releases from the turbine building are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from wind speeds and directions measured 10.5 meters above the ground and from the vertical temperature difference between 10.03 and 45.30 meters, and are presented for each quarter in the 2017 Meteorological Data Tables 7A, 7B, 7C, and 7D.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

4. Doses From Airborne Effluents (Continued)
a. Airborne Release Points (Continued)

Releases from the radwaste and reactor buildings are considered split-level releases.

Portions of the release are treated as ground-level while other portions are considered elevated depending on the ratio of the vertical exit velocity to the horizontal wind speed.

The split-level dispersion approach is implemented using a model that requires two complete quarterly JFDs for each effluent vent, one for the ground-level releases and one for the elevated releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10.5 meters above ground-level and from the vertical temperature difference between 10.03 and 45.30 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 45.74 meter level and the vertical temperature difference between 10.03 and 89.59 meters. Both of these JFDs are given for each quarter in the 2017 Meteorological Data Tables 8A, 8B, 8C, and 8D.

Releases from the stack are considered to be elevated releases. The JFDs for elevated releases are based on wind directions and wind speeds measured at 90.29 meters and the vertical temperature difference between 10.03 and 89.59 meters, and are given for each quarter in the 2017 Meteorological Data Tables 9A, 9B, 9C, 9D.

b. Meteorological Data Meteorological variables at BFN are measured continuously. Measurements collected include wind speed and wind direction at heights of 10.5, 45.74, and 90.29 meters above the ground, and temperature at heights of 10.03, 45.30, and 89.59 meters above the ground. Quarterly JFDs are calculated for each release point using the appropriate levels of meteorological data. A quarterly JFD gives the percentage of the time that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of noncalm wind directions less than 1.6 m/s (3.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

The generally open terrain around BFN does not cause any significant effects on the transport and dispersion of gaseous effluents from the plant. Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (30-60 meters). Between 30 and 80 kilometers, the hills become larger to the north and south and mountainous to the east and northeast. The Tennessee River/Wheeler Lake may have a minor effect on transport and dispersion in the immediate vicinity of BFN during periods of winds with a southerly component, overcast skies, and relatively high wind speeds. Also, the lower layer (10-45 meters) stability class tends to be more stable. However, during this infrequent condition, dose estimates will be conservative.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

4. Doses From Airborne Effluents (Continued)
c. External Exposure Dose Dose calculated for maximum external air dose (gamma-air and beta-air) are made for points at and beyond the unrestricted area boundary as described in the BFN ODCM. The highest of these doses is then selected.
d. Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are calculated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.
e. Organ Dose Dose to an organ due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into three possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. However, for the ingestion dose, only those pathways that exist for each receptor are considered in the sum, e.g., milk ingestion doses are included only for locations where milk was consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden was identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

The maximum organ dose, thyroid dose, and total body dose from airborne effluents are presented in Table 4.

5. Doses From Liquid Effluents For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentration of radionuclides in the Tennessee River is calculated by a computer model which uses measured hydraulic data downstream of BFN. Parameters used to determine the doses are based on guidance given by the NRC for maximum ingestion rates, exposure times, etc.

E-31

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

5. Doses From Liquid Effluents (Continued)

Wherever possible, parameters used in the dose calculation are site specific. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the BFN ODCM.

a. Liquid Release Points and River Data Radionuclide concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. When necessary, liquid releases from BFN, located at Tennessee River Mile 294, are made through diffusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-fifth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam (Wheeler Dam), at Tennessee River Mile 283.

Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plants release point. The maximum exposed individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam. The maximum exposed individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply

[West Morgan - East Lawrence (WMEL)]. This could be interpreted as indicating that the maximum exposed individual, as assumed for liquid releases from BFN, is an individual who obtains all of his drinking water at WMEL, consumes fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just downstream of the plants release point. Doses calculated for the maximum exposed individual due to liquid effluents for each quarter in the period are presented in Table 5 along with the average river flows past the plant site for the periods.

6. Population Doses Population doses due to airborne effluents are calculated for people living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion population doses are calculated assuming that each individual consumed milk, vegetables, and meat produced within the sector in which the individual resides.

Population doses due to liquid effluents are calculated for the entire downstream Tennessee River population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee River population. Recreation population doses are calculated using historical recreational data on the number of shoreline visits at downstream locations.

Population doses calculated for airborne and liquid effluents are presented in Tables 4 and 5.

E-32

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

7. Offsite Direct Radiation Dose External gamma radiation levels were measured by environmental dosimeters deployed around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP).

The quarterly gamma radiation levels determined from these dosimeters during this reporting period averaged approximately 17 mrem/quarter at onsite stations (at or near the site boundary) and approximately 14 mrem/quarter at offsite stations. The onsite stations are approximately 3 mrem/quarter higher than at offsite stations. This difference is consistent with levels measured for pre-operation and construction phases of the Tennessee Valley Authority nuclear plants where the average radiation levels onsite were generally 2-6 mrem/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences.

Fluctuations in natural background dose rates and in dosimeter readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

8. Dose To A Member Of The Public Inside The Site Boundary Pursuant to ODCM Section 7.7.5, a review was performed to determine the highest dose to a member of the public in the site boundary. The dose to a member of the public consists of the sum of dose commitments from effluent releases as well as any direct radiation dose.

The gaseous effluent dose commitment is negligible compared to the direct radiation dose.

The direct radiation dose was determined from area environmental dosimeters located onsite. It consisted of gamma dose from the plume, ground contamination, and from equipment sources (i.e., tanks, turbine shine, radioactive material storage areas, etc.). The critical location was determined to be an Optically Stimulated Luminescence (OSL) dosimeter near the Livewell Center (Training Center). The direct radiation dose accounting for background and occupancy was approximately 1.0 mrem/quarter during 2017.

The total annual dose commitment to a member of the public for 2017 was 4.1 mrem. It can be concluded that the dose limit for a member of the public at the site boundary as specified in 10 CFR 20.1301 was not exceeded.

9. Total Dose To determine compliance with 40 CFR 190, annual total dose contributions to the maximum exposed individual from BFN radioactive effluents and all other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than the thyroid for the maximum exposed individual is conservatively calculated by summing the following doses: the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct E-33

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

9. Total Dose (continued) radiation dose levels as measured by the REMP. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than the thyroid) to determine compliance.

The annual thyroid dose to the maximum exposed individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the REMP. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.

Total dose from the fuel cycle is presented in Table 6.

E-34

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 Page 1 of 4 Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NNW/1650 Gamma Air 4.92E-11 mrad 5 mrad <1%

meters NNW/1650 Beta Air 1.50E-10 mrad 10 mrad <1%

meters Submersion 8.74E-04 N/2440 Total Body NA NA mrem meters 1.03E-03 N/2440 Skin NA NA mrem meters Organ Doses 3.32E-02 Child/Bone 7.5 mrem <1% N/2540 meters mrem 3.06E-02 Child/Thyroid 7.5 mrem <1% N/2540 meters mrem Child/Total 3.01E-02 7.5 mrem <1% N/2540 meters Body mrem Population Doses Total Body Dose 1.38E-01 man-rem Maximum Organ Dose (organ) 4.50E-01 man-rem (Bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 2 of 4 Doses from Airborne Effluents Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 4.16E-11 mrad 5 mrad <1% N/1525 meters Beta Air 1.27E-10 mrad 10 mrad <1% N/1525 meters Submersion Total Body 2.16E-04 mrad NA NA E/1410 meters Skin 2.54E-04 mrad NA NA E/1410 meters Organ Doses Child/Bone 2.74E-02 7.5 mrem <1% N/2540 meters 1.37E-02 <1%

Child/Thyroid 7.5 mrem N/2540 meters mrem Child/Total 1.26E-02 <1%

7.5 mrem N/2540 meters Body mrem Population Doses Total Body Dose 1.85E-01 man-rem Maximum Organ Dose (organ) 9.05E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 3 of 4 Doses from Airborne Effluents Third Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NE/5200 Gamma Air 3.40E-11 mrad 5 mrad <1%

meters NE/5200 Beta Air 1.04E-10 mrad 10 mrad <1%

meters Submersion Total Body 7.21E-04 mrad NA NA E/1410 meters Skin 8.48E-04 mrad NA NA E/1410 meters Organ Doses Child/Bone 3.62E-02 7.5 mrem <1% NE/4290 meters Child/Thyroid 1.97E-02 7.5 mrem <1% N/2540 meters Child/Total 1.89E-02 7.5 mrem <1% N/2540 meters Body Population Doses Total Body Dose 2.75E-01 man-rem Maximum Organ Dose (organ) 9.05E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 4 of 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NNW/1650 Gamma Air 8.79E-11 mrad 5 mrad <1%

meters NNW/1650 Beta Air 2.69E-10 mrad 10 mrad <1%

meters Submersion NNW/1650 Total Body 4.24E-04 mrad NA NA meters NNW/1650 Skin 4.98E-04 mrad NA NA meters Organ Doses NNW/2290 Child/ Bone 3.10E-02 7.5 mrem <1%

meters 2.45E-02 NNW/2290 Child/Thyroid 7.5 mrem <1%

mrem meters Child /Total 2.29E-02 NNW/2290 7.5 mrem <1%

Body mrem meters Population Doses Total Body Dose 1.99E-01 man-rem Maximum Organ Dose (organ) 6.70E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

E-38

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 Page 1 of 4 Doses from Liquid Effluents First Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 1.5E-04 Recreation 1.1E-05 Water 9.2E-06 Ingestion Total 1.7E-04 1.5 mrem <1%

Teen Liver Fish Ingestion 2.4E-04 Recreation 1.1E-05 Water 8.5E-06 Ingestion Total 2.6E-04 5 mrem <1%

Child Thyroid Fish Ingestion 1.1E-07 Recreation 1.1E-05 Water 8.8E-06 Ingestion Total 2.0E-05 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 44,432 Population Doses Total Body Dose 2.3E-03 man-rem Maximum Organ Dose (organ) 3.1E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 2 of 4 Doses from Liquid Effluents Second Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 1.9E-04 Recreation 1.9E-05 Water 4.2E-06 Ingestion Total 2.1E-04 1.5 mrem <1%

Teen Liver Fish Ingestion 3.0E-04 Recreation 1.9E-05 Water 5.4E-06 Ingestion Total 3.2E-04 5 mrem <1%

Child Thyroid Fish Ingestion 9.9E-09 Recreation 1.9E-05 Water 8.0E-07 Ingestion Total 2.0E-05 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 50,741 Population Doses Total Body Dose 3.2E-03 man-rem Maximum Organ Dose (organ) 4.3E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 3 of 4 Doses from Liquid Effluents Third Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Child Total Body Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 1.5 mrem <1%

Child Liver Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 5 mrem <1%

Child Thyroid Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 36,086 Population Doses Total Body Dose 9.2E-06 man-rem Maximum Organ Dose (organ) 9.2E-06 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

E-41

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 4 of 4 Doses from Liquid Effluents Fourth Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 2.0E-05 Recreation 6.7E-06 Water 3.2E-05 Ingestion Total 5.9E-05 1.5 mrem <1%

Child Bone Fish Ingestion 2.9E-05 Recreation 6.7E-06 Water 4.4E-05 Ingestion Total 8.0E-05 5 mrem <1%

Child Thyroid Fish Ingestion 6.2E-07 Recreation 6.7E-06 Water 4.3E-05 Ingestion Total 5.0E-05 5 mrem <1%

Average Riverflow past BFN (cubic feet per second): 39,131 Population Doses Total Body Dose 1.5E-03 man-rem Maximum Organ Dose (organ) 1.6E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

E-42

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5A Page 1 of 1 Total Dose from I-131 Water Ingestion Pathway Quarter 1 2 3 4 Totals I-131 Ci 0 0 0 8.3E-07 8.3E-07 Infant/Thyroid (mrem) 0 0 0 2.9E-07 2.9E-07 Population/Thyroid (mrem) 0 0 0 2.1E-06 2.1E-06 Doses from I-131 Water Ingestion Pathway The REMP requirements as specified in Table 3.12-1 from NUREG 1302, Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Boiling Water Reactors, dated April 1991, requires an I-131 specific analysis for drinking water pathway samples if the annual dose from I-131 is greater than 1 mrem. In order to evaluate the need for implementation of this additional analysis, the drinking water pathway dose from I-131 to the maximum organ and age group was calculated. There was no drinking water pathway dose from I-131 and the performance of the I-131 specific analysis is not required for BFN REMP drinking water samples.

E-43

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 6 Page 1 of 1 Total Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)

Total body air submersion 8.74E-04 2.16E-04 7.21E-04 4.24E-04 Critical organ dose (air) 3.32E-02 2.74E-02 3.62E-02 3.10E-02 Total body dose (liquid) 1.70E-04 2.10E-04 5.70E-07 5.90E-05 Maximum organ dose (liquid) 2.60E-04 3.20E-04 5.70E-07 8.00E-05 Direct Radiation Dose 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Total 3.45E-02 2.81E-02 3.69E-02 3.16E-02 Cumulative Total Dose (mrem) 1.31E-01 (Total body or any other organ)

Annual Dose Limit 2.5E+01 (mrem)

< 1%

Percent of Limit Thyroid Dose (mrem)

Total body air submersion 8.74E-04 2.16E-04 7.21E-04 4.24E-04 Thyroid dose (airborne) 3.06E-02 1.37E-02 1.97E-02 2.45E-02 Total body dose (liquid) 1.70E-04 2.10E-04 5.70E-07 5.90E-05 Thyroid dose (liquid) 2.00E-05 2.00E-05 5.70E-07 5.00E-05 Direct Radiation Dose 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Total 3.17E-02 1.41E-02 2.04E-02 2.50E-02 Cumulative Total Dose 9.12E-02 (Thyroid) mrem Annual Dose Limit 7.5E+01 (mrem)

Percent of Limit < 1%

E-44

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FIRST QUARTER E-45

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.510 0.093 0.000 0.000 0.603 NNE 0.000 0.000 0.000 0.000 0.000 0.278 0.000 0.000 0.000 0.278 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.093 0.603 0.139 0.000 0.000 0.000 0.000 0.835 SSE 0.000 0.000 0.139 0.232 0.000 0.000 0.000 0.000 0.000 0.371 S 0.000 0.000 0.186 0.464 0.000 0.000 0.000 0.000 0.000 0.650 SSW 0.000 0.000 0.046 0.232 0.000 0.000 0.000 0.000 0.000 0.278 SW 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.000 0.000 0.046 0.186 0.000 0.000 0.000 0.232 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.139 NW 0.000 0.000 0.046 0.000 0.000 0.139 0.093 0.000 0.000 0.278 NNW 0.000 0.000 0.000 0.000 0.000 0.510 0.186 0.000 0.000 0.696 SUBTOTAL 0.000 0.000 0.510 1.671 0.232 1.717 0.464 0.000 0.000 4.594 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS A 99 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 99 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 7.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-46

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.464 0.000 0.000 0.000 0.464 NNE 0.000 0.000 0.000 0.000 0.139 0.093 0.000 0.000 0.000 0.232 NE 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.093 0.278 0.046 0.000 0.000 0.000 0.000 0.418 SSE 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.278 S 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 SSW 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.186 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.000 0.371 0.232 0.000 0.000 0.603 NW 0.000 0.000 0.000 0.000 0.000 0.325 0.139 0.000 0.000 0.464 NNW 0.000 0.000 0.000 0.000 0.000 0.278 0.093 0.000 0.000 0.371 SUBTOTAL 0.000 0.000 0.371 0.557 0.371 1.671 0.464 0.000 0.000 3.434 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS B 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 8.56 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-47

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.186 NNE 0.000 0.000 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.278 NE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.232 SSE 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 S 0.000 0.000 0.232 0.093 0.046 0.000 0.000 0.000 0.000 0.371 SSW 0.000 0.000 0.232 0.139 0.000 0.000 0.000 0.000 0.000 0.371 SW 0.000 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.232 WSW 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.093 0.093 0.371 0.232 0.000 0.000 0.789 NW 0.000 0.000 0.000 0.046 0.093 0.325 0.093 0.000 0.000 0.557 NNW 0.000 0.000 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.186 SUBTOTAL 0.000 0.000 0.789 0.789 0.603 1.114 0.325 0.000 0.000 3.619 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS C 78 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 78 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 6.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-48

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.371 0.371 0.974 0.974 0.000 0.000 0.000 2.738 NNE 0.000 0.000 0.278 0.557 1.299 0.418 0.000 0.000 0.000 2.552 NE 0.000 0.000 0.278 0.278 0.418 0.557 0.000 0.000 0.000 1.531 ENE 0.000 0.000 0.232 0.000 0.046 0.000 0.000 0.000 0.000 0.278 E 0.000 0.000 0.186 0.093 0.046 0.000 0.000 0.000 0.000 0.325 ESE 0.000 0.000 0.325 0.928 0.093 0.000 0.000 0.000 0.000 1.346 SE 0.000 0.000 0.882 0.371 0.046 0.000 0.000 0.000 0.000 1.299 SSE 0.000 0.000 0.928 0.371 0.000 0.000 0.000 0.000 0.000 1.299 S 0.000 0.000 1.299 0.696 0.186 0.232 0.000 0.000 0.000 2.413 SSW 0.000 0.000 0.418 0.742 0.139 0.000 0.000 0.000 0.000 1.299 SW 0.000 0.000 0.510 0.139 0.000 0.000 0.000 0.000 0.000 0.650 WSW 0.000 0.000 0.464 0.278 0.186 0.139 0.000 0.000 0.000 1.067 W 0.000 0.000 0.464 0.835 0.742 0.510 0.000 0.000 0.000 2.552 WNW 0.000 0.000 0.232 0.557 0.510 1.114 0.603 0.000 0.000 3.016 NW 0.000 0.000 0.093 0.418 0.742 1.439 1.717 0.278 0.000 4.687 NNW 0.000 0.000 0.139 0.325 0.696 1.392 0.882 0.000 0.000 3.434 SUBTOTAL 0.000 0.046 7.100 6.961 6.125 6.775 3.202 0.278 0.000 30.487 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS D 657 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 657 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 6.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-49

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.464 0.835 0.232 0.139 0.000 0.000 0.000 1.717 NNE 0.000 0.093 0.418 0.557 1.160 0.093 0.000 0.000 0.000 2.320 NE 0.000 0.093 0.418 0.557 0.371 0.139 0.000 0.000 0.000 1.578 ENE 0.000 0.046 0.325 0.371 0.046 0.000 0.000 0.000 0.000 0.789 E 0.000 0.046 1.253 0.464 0.000 0.000 0.000 0.000 0.000 1.763 ESE 0.000 0.093 1.624 1.253 0.278 0.046 0.000 0.000 0.000 3.295 SE 0.000 0.232 1.299 0.557 0.139 0.000 0.000 0.000 0.000 2.227 SSE 0.000 0.603 1.578 0.557 0.046 0.000 0.000 0.000 0.000 2.784 S 0.000 0.139 2.227 2.181 1.995 0.510 0.000 0.000 0.000 7.053 SSW 0.000 0.186 0.510 0.742 1.114 0.000 0.000 0.000 0.000 2.552 SW 0.000 0.046 0.325 0.186 0.000 0.000 0.000 0.000 0.000 0.557 WSW 0.000 0.046 0.742 0.371 0.000 0.000 0.000 0.000 0.000 1.160 W 0.000 0.046 0.510 0.418 0.093 0.093 0.000 0.000 0.000 1.160 WNW 0.000 0.000 0.186 0.325 0.278 0.000 0.000 0.000 0.000 0.789 NW 0.000 0.000 0.278 0.232 0.186 0.325 0.278 0.000 0.000 1.299 NNW 0.000 0.000 0.603 0.696 1.021 0.742 0.046 0.000 0.000 3.109 SUBTOTAL 0.000 1.717 12.761 10.302 6.961 2.088 0.325 0.000 0.000 34.153 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS E 736 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 736 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 4.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-50

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.974 0.603 0.000 0.000 0.000 0.000 0.000 1.578 NNE 0.000 0.000 0.139 0.371 0.093 0.000 0.000 0.000 0.000 0.603 NE 0.000 0.046 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.232 ENE 0.000 0.000 0.325 0.093 0.000 0.000 0.000 0.000 0.000 0.418 E 0.000 0.278 0.835 0.046 0.000 0.000 0.000 0.000 0.000 1.160 ESE 0.000 0.139 0.696 0.046 0.000 0.000 0.000 0.000 0.000 0.882 SE 0.000 0.371 1.021 0.278 0.000 0.000 0.000 0.000 0.000 1.671 SSE 0.000 0.974 0.789 0.000 0.000 0.000 0.000 0.000 0.000 1.763 S 0.000 0.418 1.439 1.810 0.835 0.093 0.000 0.000 0.000 4.594 SSW 0.000 0.093 0.557 0.557 0.139 0.000 0.000 0.000 0.000 1.346 SW 0.000 0.046 0.186 0.046 0.000 0.000 0.000 0.000 0.000 0.278 WSW 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.186 W 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NW 0.000 0.093 0.232 0.046 0.000 0.000 0.000 0.000 0.000 0.371 NNW 0.000 0.139 0.232 0.464 0.093 0.046 0.000 0.000 0.000 0.974 SUBTOTAL 0.000 2.923 7.610 4.455 1.160 0.139 0.000 0.000 0.000 16.288 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS F 351 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 351 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 3.04 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-51

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.003 0.093 0.278 0.046 0.000 0.000 0.000 0.000 0.000 0.420 NNE 0.001 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.187 NE 0.001 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.140 ENE 0.002 0.093 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.280 E 0.002 0.093 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.280 ESE 0.003 0.139 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.374 SE 0.003 0.325 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.421 SSE 0.014 0.928 1.067 0.000 0.000 0.000 0.000 0.000 0.000 2.009 S 0.017 0.278 2.135 0.603 0.000 0.000 0.000 0.000 0.000 3.033 SSW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.001 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.140 SUBTOTAL 0.046 2.042 4.548 0.789 0.000 0.000 0.000 0.000 0.000 7.425 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS G 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 2.10 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-52

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES SECOND QUARTER E-53

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NNE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.414 0.184 0.000 0.000 0.000 0.000 0.000 0.597 SSE 0.000 0.000 0.781 0.138 0.000 0.000 0.000 0.000 0.000 0.919 S 0.000 0.000 1.149 0.230 0.000 0.000 0.000 0.000 0.000 1.379 SSW 0.000 0.000 0.414 0.689 0.000 0.000 0.000 0.000 0.000 1.103 SW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.138 W 0.000 0.000 0.000 0.000 0.000 0.276 0.000 0.000 0.000 0.276 WNW 0.000 0.000 0.000 0.000 0.000 0.184 0.138 0.000 0.000 0.322 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.184 SUBTOTAL 0.000 0.000 2.849 1.333 0.046 0.781 0.184 0.000 0.000 5.193 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS A 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 4.47 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-54

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.184 NNE 0.000 0.000 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.138 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.000 0.000 0.184 SE 0.000 0.000 0.184 0.276 0.000 0.000 0.000 0.000 0.000 0.460 SSE 0.000 0.000 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.230 S 0.000 0.000 0.368 0.092 0.000 0.000 0.000 0.000 0.000 0.460 SSW 0.000 0.000 0.414 0.138 0.000 0.000 0.000 0.000 0.000 0.551 SW 0.000 0.000 0.138 0.184 0.092 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.000 0.046 0.230 0.000 0.092 0.000 0.000 0.000 0.368 W 0.000 0.000 0.046 0.092 0.046 0.138 0.000 0.000 0.000 0.322 WNW 0.000 0.000 0.000 0.000 0.092 0.184 0.138 0.000 0.000 0.414 NW 0.000 0.000 0.000 0.138 0.184 0.184 0.184 0.000 0.000 0.689 NNW 0.000 0.000 0.000 0.046 0.046 0.138 0.000 0.000 0.000 0.230 SUBTOTAL 0.000 0.000 1.425 1.425 0.506 1.057 0.322 0.000 0.000 4.733 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS B 103 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 103 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 5.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-55

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.046 0.138 0.184 0.000 0.000 0.000 0.368 NNE 0.000 0.000 0.000 0.092 0.276 0.046 0.000 0.000 0.000 0.414 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.506 0.184 0.000 0.000 0.000 0.000 0.000 0.689 SSE 0.000 0.000 0.689 0.000 0.000 0.000 0.000 0.000 0.000 0.689 S 0.000 0.000 0.597 0.000 0.000 0.000 0.000 0.000 0.000 0.597 SSW 0.000 0.000 0.368 0.322 0.000 0.000 0.000 0.000 0.000 0.689 SW 0.000 0.000 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.000 0.184 0.138 0.000 0.092 0.000 0.000 0.000 0.414 W 0.000 0.000 0.046 0.322 0.138 0.230 0.000 0.000 0.000 0.735 WNW 0.000 0.000 0.000 0.230 0.138 0.184 0.092 0.092 0.000 0.735 NW 0.000 0.000 0.000 0.184 0.138 0.230 0.046 0.046 0.000 0.643 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 2.665 1.838 0.827 1.057 0.184 0.138 0.000 6.710 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS C 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 5.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-56

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.368 0.460 0.322 0.092 0.000 0.000 0.000 1.241 NNE 0.000 0.000 0.276 0.643 0.551 0.643 0.000 0.000 0.000 2.114 NE 0.000 0.046 0.138 0.414 0.322 0.368 0.046 0.000 0.000 1.333 ENE 0.000 0.000 0.092 0.092 0.092 0.046 0.000 0.000 0.000 0.322 E 0.000 0.092 0.414 0.230 0.046 0.000 0.000 0.000 0.000 0.781 ESE 0.000 0.092 0.735 0.919 0.322 0.092 0.000 0.000 0.000 2.160 SE 0.000 0.046 2.068 0.368 0.000 0.046 0.000 0.000 0.000 2.528 SSE 0.000 0.000 2.482 0.092 0.000 0.000 0.000 0.000 0.000 2.574 S 0.000 0.046 2.849 0.230 0.000 0.000 0.000 0.000 0.000 3.125 SSW 0.000 0.276 1.976 0.873 0.092 0.000 0.000 0.000 0.000 3.217 SW 0.000 0.092 0.873 0.092 0.046 0.000 0.000 0.000 0.000 1.103 WSW 0.000 0.092 1.333 0.597 0.046 0.046 0.000 0.000 0.000 2.114 W 0.000 0.138 1.333 2.574 1.471 0.781 0.643 0.000 0.000 6.939 WNW 0.000 0.000 0.276 0.689 0.322 0.597 0.322 0.138 0.000 2.344 NW 0.000 0.000 0.184 0.506 0.689 0.781 0.276 0.000 0.000 2.436 NNW 0.000 0.000 0.276 0.460 0.735 0.460 0.092 0.000 0.000 2.022 SUBTOTAL 0.000 0.919 15.671 9.237 5.055 3.952 1.379 0.138 0.000 36.351 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS D 791 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 791 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 4.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-57

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.781 0.506 0.092 0.000 0.000 0.000 0.000 1.425 NNE 0.000 0.276 0.873 0.919 0.322 0.092 0.000 0.000 0.000 2.482 NE 0.000 0.230 0.643 0.184 0.230 0.092 0.000 0.000 0.000 1.379 ENE 0.000 0.276 0.551 0.092 0.000 0.000 0.000 0.000 0.000 0.919 E 0.000 0.276 1.608 0.368 0.000 0.000 0.000 0.000 0.000 2.252 ESE 0.000 0.551 1.563 0.460 0.138 0.000 0.000 0.000 0.000 2.711 SE 0.000 0.414 0.919 0.046 0.000 0.000 0.000 0.000 0.000 1.379 SSE 0.000 0.551 0.735 0.000 0.000 0.000 0.000 0.000 0.000 1.287 S 0.000 0.551 1.517 0.322 0.000 0.000 0.000 0.000 0.000 2.390 SSW 0.000 0.551 1.930 0.735 0.092 0.000 0.000 0.000 0.000 3.309 SW 0.000 0.597 0.919 0.046 0.046 0.000 0.000 0.000 0.000 1.608 WSW 0.000 0.322 0.506 0.046 0.092 0.000 0.000 0.000 0.000 0.965 W 0.000 0.184 1.149 0.781 0.276 0.046 0.000 0.000 0.000 2.436 WNW 0.000 0.138 0.368 0.138 0.092 0.138 0.000 0.000 0.000 0.873 NW 0.000 0.184 0.184 0.184 0.000 0.414 0.000 0.000 0.000 0.965 NNW 0.000 0.230 0.460 0.414 0.092 0.184 0.000 0.000 0.000 1.379 SUBTOTAL 0.000 5.377 14.706 5.239 1.471 0.965 0.000 0.000 0.000 27.757 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS E 604 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 604 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 2.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-58

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.015 0.322 1.379 0.138 0.000 0.000 0.000 0.000 0.000 1.853 NNE 0.006 0.276 0.414 0.230 0.046 0.000 0.000 0.000 0.000 0.971 NE 0.007 0.414 0.322 0.046 0.000 0.000 0.000 0.000 0.000 0.788 ENE 0.012 0.643 0.689 0.138 0.000 0.000 0.000 0.000 0.000 1.483 E 0.011 0.506 0.735 0.184 0.000 0.000 0.000 0.000 0.000 1.436 ESE 0.010 0.184 0.919 0.046 0.000 0.046 0.000 0.000 0.000 1.205 SE 0.003 0.230 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.325 SSE 0.002 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.232 S 0.006 0.276 0.368 0.000 0.000 0.000 0.000 0.000 0.000 0.649 SSW 0.005 0.092 0.414 0.000 0.000 0.000 0.000 0.000 0.000 0.510 SW 0.003 0.092 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.371 WSW 0.002 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.232 W 0.002 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.278 WNW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NW 0.004 0.230 0.184 0.046 0.046 0.000 0.000 0.000 0.000 0.509 NNW 0.004 0.184 0.276 0.046 0.092 0.000 0.000 0.000 0.000 0.602 SUBTOTAL 0.092 3.906 6.342 0.919 0.184 0.046 0.000 0.000 0.000 11.489 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS F 250 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 250 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 2.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-59

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.012 1.103 0.689 0.414 0.000 0.000 0.000 0.000 0.000 2.218 NNE 0.005 0.506 0.276 0.184 0.000 0.000 0.000 0.000 0.000 0.970 NE 0.003 0.322 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.462 ENE 0.004 0.276 0.322 0.046 0.000 0.000 0.000 0.000 0.000 0.647 E 0.002 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.003 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.416 SE 0.001 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.004 0.322 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.555 SSW 0.001 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SW 0.001 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WNW 0.001 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NW 0.003 0.230 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.416 NNW 0.008 0.827 0.322 0.046 0.000 0.000 0.000 0.000 0.000 1.202 SUBTOTAL 0.046 4.550 2.436 0.735 0.000 0.000 0.000 0.000 0.000 7.767 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS G 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 1.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-60

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES THIRD QUARTER E-61

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.273 0.000 0.000 0.000 0.273 NNE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 ESE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 SE 0.000 0.000 0.045 0.227 0.000 0.000 0.000 0.000 0.000 0.273 SSE 0.000 0.000 0.591 0.136 0.000 0.000 0.000 0.000 0.000 0.727 S 0.000 0.000 0.318 0.000 0.000 0.000 0.000 0.000 0.000 0.318 SSW 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.045 0.045 0.091 0.000 0.000 0.000 0.000 0.182 W 0.000 0.000 0.000 0.182 0.182 0.000 0.000 0.000 0.000 0.364 WNW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.000 0.000 0.000 0.318 0.000 0.000 0.000 0.318 NNW 0.000 0.000 0.000 0.000 0.045 0.182 0.000 0.000 0.000 0.227 SUBTOTAL 0.000 0.000 1.136 0.636 0.364 0.864 0.000 0.000 0.000 3.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS A 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 5.30 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-62

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.182 0.318 0.000 0.000 0.000 0.500 NNE 0.000 0.000 0.000 0.000 0.045 0.364 0.000 0.000 0.000 0.409 NE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 SE 0.000 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.227 SSE 0.000 0.000 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.273 S 0.000 0.000 0.318 0.091 0.000 0.000 0.000 0.000 0.000 0.409 SSW 0.000 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.227 SW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.091 0.273 0.045 0.045 0.000 0.000 0.000 0.455 W 0.000 0.000 0.000 0.364 0.318 0.091 0.000 0.000 0.000 0.773 WNW 0.000 0.000 0.000 0.091 0.273 0.409 0.000 0.000 0.000 0.773 NW 0.000 0.000 0.000 0.000 0.136 0.364 0.000 0.000 0.000 0.500 NNW 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.000 0.182 SUBTOTAL 0.000 0.000 1.000 1.045 1.091 1.727 0.000 0.000 0.000 4.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS B 107 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 107 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 6.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-63

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.045 0.000 0.136 0.000 0.000 0.000 0.000 0.182 NNE 0.000 0.000 0.045 0.000 0.091 0.182 0.000 0.000 0.000 0.318 NE 0.000 0.000 0.000 0.000 0.136 0.227 0.000 0.000 0.000 0.364 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.091 0.000 0.091 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.409 0.182 0.000 0.000 0.000 0.000 0.000 0.591 SSE 0.000 0.000 0.909 0.045 0.000 0.000 0.000 0.000 0.000 0.955 S 0.000 0.000 0.591 0.045 0.000 0.000 0.000 0.000 0.000 0.636 SSW 0.000 0.000 0.364 0.091 0.000 0.000 0.000 0.000 0.000 0.455 SW 0.000 0.000 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.273 WSW 0.000 0.000 0.227 0.227 0.091 0.045 0.000 0.000 0.000 0.591 W 0.000 0.000 0.136 0.682 0.364 0.045 0.000 0.000 0.000 1.227 WNW 0.000 0.000 0.000 0.182 0.091 0.500 0.000 0.000 0.000 0.773 NW 0.000 0.000 0.000 0.182 0.091 0.136 0.000 0.000 0.000 0.409 NNW 0.000 0.000 0.045 0.045 0.045 0.091 0.000 0.000 0.000 0.227 SUBTOTAL 0.000 0.000 3.182 1.727 1.136 1.227 0.000 0.000 0.000 7.273 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 4.82 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-64

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.318 0.773 0.273 0.045 0.000 0.000 1.545 NNE 0.000 0.045 0.136 0.545 0.955 0.364 0.000 0.000 0.000 2.045 NE 0.000 0.045 0.136 0.682 1.091 1.091 0.000 0.000 0.000 3.045 ENE 0.000 0.045 0.273 0.500 0.182 0.136 0.000 0.000 0.000 1.136 E 0.000 0.000 0.545 0.591 0.591 0.000 0.000 0.000 0.000 1.727 ESE 0.000 0.091 0.955 0.636 0.409 0.091 0.000 0.000 0.000 2.182 SE 0.000 0.000 2.727 0.409 0.000 0.000 0.000 0.000 0.000 3.136 SSE 0.000 0.136 2.409 0.136 0.000 0.000 0.000 0.000 0.000 2.682 S 0.000 0.273 2.545 0.091 0.000 0.000 0.000 0.000 0.000 2.909 SSW 0.000 0.091 3.636 0.409 0.045 0.000 0.000 0.000 0.000 4.182 SW 0.000 0.091 1.864 0.273 0.000 0.000 0.000 0.000 0.000 2.227 WSW 0.000 0.091 2.273 0.545 0.045 0.000 0.000 0.000 0.000 2.955 W 0.000 0.000 1.455 1.545 0.727 0.273 0.045 0.000 0.000 4.045 WNW 0.000 0.000 0.318 0.409 0.727 0.409 0.136 0.000 0.000 2.000 NW 0.000 0.000 0.182 0.318 0.182 0.136 0.182 0.000 0.000 1.000 NNW 0.000 0.045 0.227 0.182 0.136 0.091 0.000 0.000 0.000 0.682 SUBTOTAL 0.000 0.955 19.818 7.591 5.864 2.864 0.409 0.000 0.000 37.500 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS D 825 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 825 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 4.04 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-65

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 1.091 0.500 0.091 0.182 0.091 0.000 0.000 1.955 NNE 0.000 0.045 0.773 1.500 0.955 0.455 0.000 0.000 0.000 3.727 NE 0.000 0.091 0.591 0.636 0.455 0.773 0.000 0.000 0.000 2.545 ENE 0.000 0.136 1.182 0.318 0.045 0.000 0.000 0.000 0.000 1.682 E 0.000 0.273 1.500 0.500 0.045 0.045 0.000 0.000 0.000 2.364 ESE 0.000 0.455 1.409 0.455 0.045 0.045 0.000 0.000 0.000 2.409 SE 0.000 0.545 0.364 0.000 0.000 0.000 0.000 0.000 0.000 0.909 SSE 0.000 0.545 0.682 0.000 0.000 0.000 0.000 0.000 0.000 1.227 S 0.000 0.727 0.955 0.045 0.000 0.000 0.000 0.000 0.000 1.727 SSW 0.000 0.273 0.773 0.000 0.000 0.000 0.000 0.000 0.000 1.045 SW 0.000 0.318 0.409 0.000 0.000 0.000 0.000 0.000 0.000 0.727 WSW 0.000 0.045 0.864 0.091 0.000 0.000 0.000 0.000 0.000 1.000 W 0.000 0.182 0.636 0.364 0.182 0.045 0.000 0.000 0.000 1.409 WNW 0.000 0.000 0.182 0.091 0.045 0.045 0.000 0.000 0.000 0.364 NW 0.000 0.045 0.182 0.091 0.000 0.136 0.000 0.000 0.000 0.455 NNW 0.000 0.136 0.500 0.273 0.136 0.045 0.000 0.000 0.000 1.091 SUBTOTAL 0.000 3.818 12.091 4.864 2.000 1.773 0.091 0.000 0.000 24.636 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS E 542 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 542 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 3.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-66

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.182 1.364 0.409 0.000 0.000 0.000 0.000 0.000 1.955 NNE 0.000 0.318 1.455 1.364 0.182 0.000 0.000 0.000 0.000 3.318 NE 0.000 0.455 0.591 0.318 0.045 0.000 0.000 0.000 0.000 1.409 ENE 0.000 0.409 1.455 0.455 0.091 0.000 0.000 0.000 0.000 2.409 E 0.000 0.136 1.455 0.409 0.000 0.000 0.000 0.000 0.000 2.000 ESE 0.000 0.136 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.318 SE 0.000 0.227 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.455 SSE 0.000 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.273 S 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.227 SSW 0.000 0.182 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.227 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.136 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.136 NW 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 NNW 0.000 0.273 0.364 0.045 0.000 0.000 0.000 0.000 0.000 0.682 SUBTOTAL 0.000 2.955 7.455 3.000 0.318 0.000 0.000 0.000 0.000 13.727 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS F 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 2.59 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-67

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 1.364 0.955 0.318 0.000 0.000 0.000 0.000 0.000 2.636 NNE 0.000 0.682 0.909 0.318 0.000 0.000 0.000 0.000 0.000 1.909 NE 0.000 0.545 0.682 0.000 0.000 0.000 0.000 0.000 0.000 1.227 ENE 0.000 0.182 0.773 0.000 0.000 0.000 0.000 0.000 0.000 0.955 E 0.000 0.182 0.318 0.000 0.000 0.000 0.000 0.000 0.000 0.500 ESE 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 SSE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.136 NNW 0.000 1.136 0.091 0.000 0.000 0.000 0.000 0.000 0.000 1.227 SUBTOTAL 0.000 4.500 3.864 0.636 0.000 0.000 0.000 0.000 0.000 9.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS G 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 1.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-68

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FOURTH QUARTER E-69

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.655 0.000 0.000 0.000 0.701 NNE 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.187 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.187 0.047 0.000 0.000 0.000 0.281 SE 0.000 0.000 0.234 0.327 0.000 0.000 0.000 0.000 0.000 0.561 SSE 0.000 0.000 0.795 0.327 0.000 0.000 0.000 0.000 0.000 1.122 S 0.000 0.000 0.374 0.281 0.000 0.000 0.000 0.000 0.000 0.655 SSW 0.000 0.000 0.094 0.234 0.047 0.000 0.000 0.000 0.000 0.374 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NNW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 SUBTOTAL 0.000 0.000 1.496 1.216 0.327 1.029 0.000 0.000 0.000 4.067 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS A 88 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 87 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-70

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.187 0.000 0.000 0.000 0.234 NNE 0.000 0.000 0.000 0.000 0.140 0.281 0.000 0.000 0.000 0.421 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.234 0.000 0.000 0.000 0.000 0.281 SE 0.000 0.000 0.140 0.281 0.000 0.000 0.000 0.000 0.000 0.421 SSE 0.000 0.047 0.234 0.094 0.000 0.000 0.000 0.000 0.000 0.374 S 0.000 0.000 0.094 0.140 0.000 0.000 0.000 0.000 0.000 0.234 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.281 0.047 0.000 0.000 0.327 NW 0.000 0.000 0.000 0.000 0.000 0.187 0.047 0.000 0.000 0.234 NNW 0.000 0.000 0.000 0.047 0.094 0.047 0.000 0.000 0.000 0.187 SUBTOTAL 0.000 0.047 0.468 0.655 0.514 0.982 0.094 0.000 0.000 2.758 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS B 61 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 59 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 6.64 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-71

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.047 0.000 0.234 0.047 0.000 0.000 0.000 0.327 NNE 0.000 0.000 0.047 0.000 0.187 0.094 0.000 0.000 0.000 0.327 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.140 0.094 0.000 0.000 0.000 0.281 SE 0.000 0.047 0.187 0.281 0.047 0.000 0.000 0.000 0.000 0.561 SSE 0.000 0.000 0.281 0.187 0.000 0.000 0.000 0.000 0.000 0.468 S 0.000 0.000 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SSW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 SW 0.000 0.000 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.140 WSW 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.140 W 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.000 0.000 0.094 0.094 0.047 0.000 0.000 0.234 NW 0.000 0.000 0.000 0.000 0.047 0.047 0.140 0.000 0.000 0.234 NNW 0.000 0.000 0.000 0.000 0.094 0.187 0.000 0.000 0.000 0.281 SUBTOTAL 0.000 0.047 0.935 0.655 0.888 0.655 0.187 0.000 0.000 3.366 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS C 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.99 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-72

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.047 0.187 0.842 1.683 0.374 0.000 0.000 0.000 3.132 NNE 0.000 0.000 0.281 0.748 1.496 0.327 0.000 0.000 0.000 2.852 NE 0.000 0.000 0.234 0.842 0.374 0.094 0.000 0.000 0.000 1.543 ENE 0.000 0.000 0.234 0.140 0.094 0.327 0.000 0.000 0.000 0.795 E 0.000 0.140 0.187 0.234 0.234 0.000 0.000 0.000 0.000 0.795 ESE 0.000 0.094 0.701 0.608 0.608 0.187 0.000 0.000 0.000 2.197 SE 0.000 0.187 1.636 0.655 0.000 0.000 0.000 0.000 0.000 2.478 SSE 0.000 0.094 1.543 0.281 0.000 0.000 0.000 0.000 0.000 1.917 S 0.000 0.140 1.169 0.327 0.140 0.000 0.000 0.000 0.000 1.777 SSW 0.000 0.094 0.701 0.094 0.047 0.000 0.000 0.000 0.000 0.935 SW 0.000 0.094 0.468 0.140 0.000 0.000 0.000 0.000 0.000 0.701 WSW 0.000 0.047 0.842 0.468 0.094 0.047 0.000 0.000 0.000 1.496 W 0.000 0.000 0.748 0.795 0.468 0.421 0.000 0.000 0.000 2.431 WNW 0.000 0.047 0.374 0.608 0.748 1.122 0.187 0.094 0.047 3.226 NW 0.000 0.000 0.047 0.514 0.608 0.982 0.561 0.094 0.000 2.805 NNW 0.000 0.000 0.140 0.514 1.356 1.777 0.140 0.000 0.000 3.927 SUBTOTAL 0.000 0.982 9.490 7.807 7.948 5.657 0.888 0.187 0.047 33.006 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS D 714 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 706 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-73

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.005 0.281 0.748 0.982 0.187 0.234 0.000 0.000 0.000 2.436 NNE 0.003 0.094 0.468 0.655 0.701 0.000 0.000 0.000 0.000 1.920 NE 0.001 0.000 0.140 0.421 0.327 0.000 0.000 0.000 0.000 0.889 ENE 0.002 0.094 0.281 0.094 0.000 0.000 0.000 0.000 0.000 0.469 E 0.008 0.327 1.216 0.935 0.140 0.000 0.000 0.000 0.000 2.626 ESE 0.015 0.468 2.525 1.823 0.234 0.000 0.000 0.000 0.000 5.065 SE 0.010 0.701 1.216 0.281 0.000 0.000 0.000 0.000 0.000 2.207 SSE 0.016 0.748 2.338 0.234 0.000 0.000 0.000 0.000 0.000 3.335 S 0.013 0.234 2.291 1.029 0.468 0.140 0.000 0.000 0.000 4.174 SSW 0.005 0.327 0.561 0.140 0.047 0.094 0.000 0.000 0.000 1.173 SW 0.003 0.234 0.281 0.047 0.000 0.000 0.000 0.000 0.000 0.564 WSW 0.002 0.094 0.327 0.094 0.000 0.000 0.000 0.000 0.000 0.516 W 0.003 0.094 0.514 0.842 0.374 0.094 0.000 0.000 0.000 1.920 WNW 0.002 0.140 0.187 0.140 0.140 0.000 0.047 0.000 0.000 0.656 NW 0.001 0.094 0.094 0.234 0.140 0.561 0.047 0.000 0.000 1.170 NNW 0.005 0.187 0.795 1.029 0.701 0.561 0.000 0.000 0.000 3.278 SUBTOTAL 0.094 4.114 13.978 8.976 3.460 1.683 0.094 0.000 0.000 32.398 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS E 713 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 693 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 3.58 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-74

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.005 0.047 1.262 0.561 0.000 0.000 0.000 0.000 0.000 1.875 NNE 0.002 0.140 0.421 0.421 0.047 0.000 0.000 0.000 0.000 1.031 NE 0.001 0.094 0.187 0.094 0.000 0.000 0.000 0.000 0.000 0.375 ENE 0.003 0.234 0.514 0.140 0.000 0.000 0.000 0.000 0.000 0.891 E 0.008 0.421 1.590 0.795 0.000 0.000 0.000 0.000 0.000 2.813 ESE 0.007 0.421 1.309 0.187 0.000 0.000 0.000 0.000 0.000 1.924 SE 0.003 0.327 0.421 0.000 0.000 0.000 0.000 0.000 0.000 0.751 SSE 0.006 0.608 0.982 0.000 0.000 0.000 0.000 0.000 0.000 1.596 S 0.002 0.094 0.468 0.187 0.234 0.094 0.000 0.000 0.000 1.078 SSW 0.002 0.187 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.376 SW 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WSW 0.001 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.141 W 0.001 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.141 WNW 0.001 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.141 NW 0.001 0.047 0.281 0.047 0.000 0.000 0.000 0.000 0.000 0.375 NNW 0.003 0.047 0.701 0.374 0.094 0.000 0.000 0.000 0.000 1.219 SUBTOTAL 0.047 2.945 8.555 2.805 0.374 0.094 0.000 0.000 0.000 14.820 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS F 326 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 317 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 2.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-75

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.055 0.561 1.496 0.327 0.000 0.000 0.000 0.000 0.000 2.440 NNE 0.026 0.561 0.421 0.047 0.000 0.000 0.000 0.000 0.000 1.055 NE 0.020 0.234 0.514 0.000 0.000 0.000 0.000 0.000 0.000 0.768 ENE 0.034 0.281 0.982 0.047 0.000 0.000 0.000 0.000 0.000 1.343 E 0.028 0.374 0.655 0.047 0.000 0.000 0.000 0.000 0.000 1.103 ESE 0.008 0.047 0.234 0.000 0.000 0.000 0.000 0.000 0.000 0.288 SE 0.006 0.047 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.240 SSE 0.005 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.192 S 0.003 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.096 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.001 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.048 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.003 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 WNW 0.003 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 NW 0.006 0.140 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.240 NNW 0.036 0.514 0.842 0.187 0.000 0.000 0.000 0.000 0.000 1.579 SUBTOTAL 0.234 3.179 5.517 0.655 0.000 0.000 0.000 0.000 0.000 9.584 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS G 223 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 205 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 5 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 2.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-76

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FIRST QUARTER E-77

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.092 0.031 0.000 0.000 0.123 NNE 0.000 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.043 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.000 0.007 0.052 0.026 0.000 0.000 0.000 0.000 0.084 SSE 0.000 0.000 0.008 0.029 0.000 0.000 0.000 0.000 0.000 0.038 S 0.000 0.000 0.026 0.069 0.000 0.000 0.000 0.000 0.000 0.095 SSW 0.000 0.000 0.001 0.017 0.000 0.000 0.000 0.000 0.000 0.019 SW 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 WSW 0.000 0.000 0.000 0.000 0.005 0.034 0.000 0.000 0.000 0.039 W 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 WNW 0.000 0.000 0.000 0.000 0.000 0.008 0.018 0.000 0.000 0.026 NW 0.000 0.000 0.000 0.000 0.000 0.023 0.018 0.000 0.000 0.041 NNW 0.000 0.000 0.000 0.000 0.000 0.090 0.036 0.000 0.000 0.126 SUBTOTAL 0.000 0.000 0.043 0.173 0.036 0.298 0.103 0.000 0.000 0.652 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS A 24.760 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 14.060 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-78

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.077 0.000 0.000 0.000 0.077 NNE 0.000 0.000 0.000 0.000 0.013 0.017 0.000 0.000 0.000 0.030 NE 0.000 0.000 0.000 0.000 0.005 0.014 0.000 0.000 0.000 0.019 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.000 0.004 0.029 0.009 0.000 0.000 0.000 0.000 0.042 SSE 0.000 0.000 0.008 0.010 0.000 0.000 0.000 0.000 0.000 0.018 S 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 SSW 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.006 0.009 0.000 0.000 0.000 0.015 WNW 0.000 0.000 0.000 0.000 0.000 0.059 0.051 0.000 0.000 0.110 NW 0.000 0.000 0.000 0.000 0.000 0.051 0.027 0.000 0.000 0.078 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.018 0.000 0.000 0.063 SUBTOTAL 0.000 0.000 0.012 0.058 0.045 0.273 0.095 0.000 0.000 0.484 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS B 25.950 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 10.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-79

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.006 0.024 0.000 0.000 0.000 0.030 NNE 0.000 0.000 0.000 0.000 0.008 0.022 0.000 0.000 0.000 0.031 NE 0.000 0.000 0.000 0.000 0.003 0.005 0.000 0.000 0.000 0.008 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 SE 0.000 0.000 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.010 SSE 0.000 0.000 0.000 0.015 0.000 0.000 0.000 0.000 0.000 0.015 S 0.000 0.000 0.012 0.008 0.040 0.000 0.000 0.000 0.000 0.061 SSW 0.000 0.000 0.006 0.014 0.000 0.000 0.000 0.000 0.000 0.020 SW 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.004 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.009 0.053 0.047 0.000 0.000 0.110 NW 0.000 0.000 0.000 0.000 0.006 0.042 0.019 0.000 0.000 0.067 NNW 0.000 0.000 0.000 0.000 0.008 0.017 0.000 0.000 0.000 0.025 SUBTOTAL 0.000 0.000 0.022 0.048 0.091 0.163 0.066 0.000 0.000 0.391 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS C 76.080 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-80

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.020 0.141 0.182 0.000 0.000 0.000 0.343 NNE 0.000 0.000 0.000 0.026 0.161 0.065 0.000 0.000 0.000 0.252 NE 0.000 0.000 0.000 0.005 0.030 0.079 0.000 0.000 0.000 0.114 ENE 0.000 0.000 0.002 0.000 0.005 0.000 0.000 0.000 0.000 0.007 E 0.000 0.000 0.002 0.007 0.004 0.000 0.000 0.000 0.000 0.013 ESE 0.000 0.000 0.014 0.098 0.018 0.000 0.000 0.000 0.000 0.131 SE 0.000 0.000 0.063 0.058 0.008 0.000 0.000 0.000 0.000 0.129 SSE 0.000 0.000 0.072 0.142 0.000 0.000 0.000 0.000 0.000 0.214 S 0.000 0.000 0.105 0.159 0.140 0.226 0.000 0.000 0.000 0.630 SSW 0.000 0.000 0.013 0.103 0.040 0.000 0.000 0.000 0.000 0.156 SW 0.000 0.000 0.007 0.017 0.000 0.000 0.000 0.000 0.000 0.025 WSW 0.000 0.000 0.008 0.028 0.026 0.027 0.000 0.000 0.000 0.090 W 0.000 0.000 0.001 0.054 0.098 0.084 0.000 0.000 0.000 0.237 WNW 0.000 0.000 0.000 0.008 0.037 0.170 0.142 0.000 0.000 0.357 NW 0.000 0.000 0.000 0.003 0.054 0.236 0.560 0.246 0.000 1.099 NNW 0.000 0.000 0.000 0.011 0.077 0.252 0.303 0.000 0.000 0.643 SUBTOTAL 0.000 0.000 0.289 0.740 0.839 1.322 1.005 0.246 0.000 4.440 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS D 781.080 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 95.690 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-81

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.014 0.089 0.039 0.025 0.000 0.000 0.000 0.167 NNE 0.000 0.000 0.007 0.069 0.164 0.017 0.000 0.000 0.000 0.258 NE 0.000 0.000 0.011 0.052 0.047 0.023 0.000 0.000 0.000 0.133 ENE 0.000 0.000 0.010 0.038 0.007 0.000 0.000 0.000 0.000 0.055 E 0.000 0.000 0.076 0.052 0.000 0.000 0.000 0.000 0.000 0.127 ESE 0.000 0.000 0.145 0.185 0.062 0.009 0.000 0.000 0.000 0.401 SE 0.000 0.007 0.139 0.119 0.058 0.000 0.000 0.000 0.000 0.323 SSE 0.000 0.026 0.289 0.284 0.044 0.000 0.000 0.000 0.000 0.643 S 0.000 0.002 0.320 0.560 1.062 0.422 0.000 0.000 0.000 2.366 SSW 0.000 0.001 0.040 0.126 0.285 0.000 0.000 0.000 0.000 0.452 SW 0.000 0.000 0.031 0.026 0.000 0.000 0.000 0.000 0.000 0.056 WSW 0.000 0.000 0.036 0.036 0.000 0.000 0.000 0.000 0.000 0.072 W 0.000 0.000 0.007 0.038 0.013 0.021 0.000 0.000 0.000 0.078 WNW 0.000 0.000 0.002 0.024 0.034 0.000 0.000 0.000 0.000 0.060 NW 0.000 0.000 0.001 0.015 0.024 0.057 0.120 0.000 0.000 0.217 NNW 0.000 0.000 0.009 0.060 0.149 0.133 0.010 0.000 0.000 0.361 SUBTOTAL 0.000 0.037 1.136 1.770 1.987 0.708 0.130 0.000 0.000 5.768 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS E 911.560 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 124.300 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-82

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.059 0.077 0.000 0.000 0.000 0.000 0.000 0.135 NNE 0.000 0.000 0.001 0.050 0.015 0.000 0.000 0.000 0.000 0.066 NE 0.000 0.000 0.006 0.011 0.000 0.000 0.000 0.000 0.000 0.018 ENE 0.000 0.000 0.021 0.012 0.000 0.000 0.000 0.000 0.000 0.033 E 0.000 0.002 0.074 0.005 0.000 0.000 0.000 0.000 0.000 0.080 ESE 0.000 0.008 0.082 0.006 0.000 0.000 0.000 0.000 0.000 0.097 SE 0.000 0.019 0.078 0.058 0.000 0.000 0.000 0.000 0.000 0.155 SSE 0.000 0.067 0.150 0.000 0.000 0.000 0.000 0.000 0.000 0.217 S 0.000 0.021 0.213 0.403 0.375 0.088 0.000 0.000 0.000 1.100 SSW 0.000 0.006 0.062 0.095 0.030 0.000 0.000 0.000 0.000 0.193 SW 0.000 0.000 0.023 0.008 0.000 0.000 0.000 0.000 0.000 0.031 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 NW 0.000 0.000 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.010 NNW 0.000 0.000 0.007 0.058 0.016 0.009 0.000 0.000 0.000 0.090 SUBTOTAL 0.000 0.124 0.783 0.788 0.436 0.097 0.000 0.000 0.000 2.228 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS F 286.670 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 48.010 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-83

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.001 0.007 0.008 0.000 0.000 0.000 0.000 0.000 0.016 NNE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NE 0.000 0.002 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.006 ENE 0.000 0.003 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.006 E 0.000 0.009 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.017 ESE 0.000 0.011 0.015 0.000 0.000 0.000 0.000 0.000 0.000 0.026 SE 0.000 0.040 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.055 SSE 0.000 0.130 0.220 0.000 0.000 0.000 0.000 0.000 0.000 0.351 S 0.000 0.041 0.401 0.183 0.000 0.000 0.000 0.000 0.000 0.625 SSW 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.005 NNW 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 SUBTOTAL 0.000 0.238 0.678 0.206 0.000 0.000 0.000 0.000 0.000 1.123 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS G 48.900 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 24.190 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-84

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.045 0.041 0.000 0.000 0.000 0.086 SSE 0.000 0.000 0.000 0.000 0.045 0.082 0.000 0.000 0.000 0.127 S 0.000 0.000 0.000 0.000 0.045 0.039 0.116 0.000 0.000 0.199 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.046 0.000 0.135 0.161 0.154 0.000 0.000 0.497 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS A 24.760 TOTAL HOURS OF ELEVATED STABILITY CLASS A 10.700 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-85

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.039 0.264 0.000 0.000 0.303 NNE 0.000 0.000 0.000 0.000 0.000 0.039 0.039 0.000 0.000 0.078 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SE 0.000 0.000 0.000 0.000 0.044 0.043 0.000 0.000 0.000 0.086 SSE 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.000 0.039 S 0.000 0.000 0.000 0.000 0.045 0.081 0.000 0.000 0.000 0.127 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.089 0.283 0.302 0.000 0.000 0.721 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS B 25.950 TOTAL HOURS OF ELEVATED STABILITY CLASS B 15.530 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-86

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.196 0.419 0.025 0.000 0.686 NNE 0.000 0.000 0.000 0.000 0.000 0.161 0.115 0.000 0.000 0.275 NE 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.044 0.043 0.000 0.000 0.000 0.087 SE 0.000 0.000 0.000 0.093 0.046 0.204 0.150 0.000 0.000 0.492 SSE 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.000 0.043 S 0.000 0.000 0.000 0.000 0.000 0.000 0.077 0.000 0.000 0.077 SSW 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.044 0.039 0.037 0.000 0.000 0.121 WSW 0.000 0.000 0.000 0.000 0.000 0.082 0.114 0.000 0.000 0.196 W 0.000 0.000 0.000 0.000 0.000 0.000 0.076 0.000 0.000 0.076 WNW 0.000 0.000 0.000 0.000 0.000 0.039 0.190 0.000 0.000 0.229 NW 0.000 0.000 0.000 0.000 0.000 0.039 0.151 0.000 0.000 0.191 NNW 0.000 0.000 0.000 0.000 0.000 0.039 0.454 0.000 0.000 0.493 SUBTOTAL 0.000 0.000 0.046 0.186 0.177 0.924 1.782 0.025 0.000 3.140 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS C 76.080 TOTAL HOURS OF ELEVATED STABILITY CLASS C 67.660 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-87

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.093 0.232 0.178 1.162 1.247 0.097 0.000 3.056 NNE 0.000 0.000 0.139 0.186 0.357 1.701 0.267 0.000 0.000 2.650 NE 0.000 0.000 0.232 0.046 0.351 0.605 0.000 0.000 0.000 1.235 ENE 0.000 0.000 0.000 0.186 0.181 0.124 0.000 0.000 0.000 0.490 E 0.000 0.000 0.046 0.046 0.045 0.000 0.000 0.000 0.000 0.137 ESE 0.000 0.000 0.000 0.046 0.354 0.533 0.038 0.000 0.000 0.971 SE 0.000 0.000 0.186 0.510 0.534 0.611 0.340 0.068 0.000 2.249 SSE 0.000 0.000 0.186 0.093 0.090 0.644 0.640 0.094 0.000 1.746 S 0.000 0.000 0.139 0.325 0.220 0.328 0.343 0.249 0.032 1.636 SSW 0.000 0.000 0.139 0.186 0.136 1.018 0.604 0.042 0.000 2.124 SW 0.000 0.000 0.418 0.557 0.088 0.369 0.038 0.000 0.000 1.470 WSW 0.000 0.000 0.186 0.232 0.316 0.779 0.075 0.000 0.000 1.587 W 0.000 0.000 0.278 0.232 0.361 1.055 0.230 0.000 0.000 2.156 WNW 0.000 0.000 0.093 0.371 0.358 1.243 1.130 0.381 0.000 3.577 NW 0.000 0.000 0.000 0.510 0.355 1.054 1.468 0.527 0.019 3.934 NNW 0.000 0.000 0.093 0.186 0.266 0.858 1.161 0.226 0.000 2.788 SUBTOTAL 0.000 0.046 2.227 3.944 4.188 12.082 7.581 1.685 0.051 31.805 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS D 781.080 TOTAL HOURS OF ELEVATED STABILITY CLASS D 685.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-88

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.093 0.000 0.670 0.884 0.380 0.000 0.000 2.026 NNE 0.000 0.000 0.046 0.093 0.400 1.381 0.384 0.000 0.000 2.304 NE 0.000 0.000 0.139 0.046 0.179 0.901 0.039 0.000 0.000 1.304 ENE 0.000 0.000 0.046 0.278 0.090 0.284 0.039 0.000 0.000 0.738 E 0.000 0.000 0.139 0.139 0.313 0.458 0.000 0.000 0.000 1.049 ESE 0.000 0.000 0.046 0.139 0.927 1.645 0.268 0.000 0.000 3.025 SE 0.000 0.000 0.232 0.418 0.484 1.465 1.060 0.276 0.011 3.945 SSE 0.000 0.000 0.139 0.232 0.361 1.096 0.975 0.575 0.030 3.409 S 0.000 0.046 0.046 0.139 0.763 1.377 1.837 1.148 0.090 5.447 SSW 0.000 0.000 0.093 0.186 0.492 1.252 1.805 0.629 0.005 4.462 SW 0.000 0.000 0.139 0.325 0.497 1.028 0.455 0.000 0.000 2.444 WSW 0.000 0.000 0.000 0.186 0.406 0.367 0.000 0.033 0.000 0.992 W 0.000 0.000 0.139 0.232 0.408 0.528 0.039 0.000 0.000 1.345 WNW 0.000 0.000 0.093 0.139 0.222 0.289 0.076 0.000 0.000 0.819 NW 0.000 0.000 0.139 0.046 0.089 0.603 0.419 0.000 0.000 1.297 NNW 0.000 0.000 0.046 0.046 0.355 0.969 0.454 0.056 0.000 1.926 SUBTOTAL 0.000 0.046 1.578 2.645 6.657 14.525 8.229 2.716 0.136 36.532 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS E 911.560 TOTAL HOURS OF ELEVATED STABILITY CLASS E 787.260 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-89

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.044 0.326 0.039 0.000 0.000 0.408 NNE 0.000 0.000 0.000 0.046 0.227 0.125 0.000 0.000 0.000 0.399 NE 0.000 0.000 0.000 0.186 0.090 0.123 0.000 0.000 0.000 0.399 ENE 0.000 0.000 0.046 0.093 0.176 0.247 0.000 0.000 0.000 0.563 E 0.000 0.000 0.046 0.046 0.133 0.250 0.000 0.000 0.000 0.476 ESE 0.000 0.046 0.046 0.139 0.308 0.251 0.000 0.000 0.000 0.790 SE 0.000 0.000 0.093 0.139 0.222 1.140 0.038 0.078 0.000 1.710 SSE 0.000 0.000 0.046 0.093 0.043 0.764 0.942 0.183 0.000 2.072 S 0.000 0.000 0.139 0.000 0.178 0.875 1.136 0.191 0.000 2.520 SSW 0.000 0.046 0.093 0.000 0.131 0.241 0.077 0.000 0.000 0.588 SW 0.000 0.000 0.046 0.046 0.090 0.292 0.000 0.000 0.000 0.475 WSW 0.000 0.046 0.046 0.093 0.090 0.000 0.000 0.000 0.000 0.276 W 0.000 0.000 0.046 0.046 0.045 0.000 0.000 0.000 0.000 0.137 WNW 0.000 0.000 0.046 0.000 0.000 0.042 0.000 0.000 0.000 0.088 NW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NNW 0.000 0.000 0.000 0.000 0.000 0.080 0.000 0.000 0.000 0.080 SUBTOTAL 0.000 0.186 0.742 0.928 1.777 4.757 2.232 0.452 0.000 11.075 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS F 286.670 TOTAL HOURS OF ELEVATED STABILITY CLASS F 238.660 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-90

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.044 0.000 0.000 0.000 0.000 0.090 ESE 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.000 0.139 0.264 0.000 0.000 0.000 0.000 0.403 SSE 0.000 0.000 0.000 0.000 0.176 0.000 0.075 0.097 0.000 0.348 S 0.000 0.000 0.000 0.000 0.000 0.080 0.000 0.000 0.000 0.080 SSW 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.278 0.575 0.121 0.075 0.097 0.000 1.147 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS G 48.900 TOTAL HOURS OF ELEVATED STABILITY CLASS G 24.710 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-91

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

SECOND QUARTER E-92

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NNE 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.036 0.000 0.000 0.000 0.000 0.036 SE 0.000 0.000 0.038 0.018 0.000 0.000 0.000 0.000 0.000 0.056 SSE 0.000 0.000 0.048 0.033 0.000 0.000 0.000 0.000 0.000 0.081 S 0.000 0.000 0.112 0.045 0.000 0.000 0.000 0.000 0.000 0.157 SSW 0.000 0.000 0.036 0.089 0.000 0.000 0.000 0.000 0.000 0.125 SW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.000 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.011 W 0.000 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.044 WNW 0.000 0.000 0.000 0.000 0.000 0.027 0.026 0.000 0.000 0.053 NW 0.000 0.000 0.000 0.000 0.000 0.006 0.009 0.000 0.000 0.015 NNW 0.000 0.000 0.000 0.000 0.000 0.029 0.000 0.000 0.000 0.029 SUBTOTAL 0.000 0.000 0.234 0.197 0.036 0.123 0.035 0.000 0.000 0.626 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS A 16.790 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 13.620 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-93

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.004 0.024 0.000 0.000 0.000 0.028 NNE 0.000 0.000 0.000 0.000 0.000 0.024 0.000 0.000 0.000 0.024 NE 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SE 0.000 0.000 0.020 0.021 0.000 0.000 0.000 0.000 0.000 0.040 SSE 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 S 0.000 0.000 0.033 0.016 0.000 0.000 0.000 0.000 0.000 0.049 SSW 0.000 0.000 0.023 0.016 0.000 0.000 0.000 0.000 0.000 0.040 SW 0.000 0.000 0.009 0.001 0.018 0.000 0.000 0.000 0.000 0.028 WSW 0.000 0.000 0.001 0.007 0.000 0.023 0.000 0.000 0.000 0.032 W 0.000 0.000 0.000 0.004 0.003 0.020 0.000 0.000 0.000 0.027 WNW 0.000 0.000 0.000 0.000 0.006 0.026 0.027 0.000 0.000 0.058 NW 0.000 0.000 0.000 0.003 0.008 0.029 0.063 0.000 0.000 0.103 NNW 0.000 0.000 0.000 0.000 0.006 0.018 0.000 0.000 0.000 0.024 SUBTOTAL 0.000 0.000 0.090 0.084 0.044 0.175 0.090 0.000 0.000 0.483 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS B 28.890 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 10.500 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-94

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.001 0.010 0.029 0.000 0.000 0.000 0.040 NNE 0.000 0.000 0.000 0.002 0.018 0.006 0.000 0.000 0.000 0.027 NE 0.000 0.000 0.000 0.000 0.000 0.006 0.010 0.000 0.000 0.015 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SE 0.000 0.000 0.005 0.011 0.000 0.000 0.000 0.000 0.000 0.016 SSE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 S 0.000 0.000 0.028 0.000 0.000 0.000 0.000 0.000 0.000 0.028 SSW 0.000 0.000 0.008 0.047 0.000 0.000 0.000 0.000 0.000 0.055 SW 0.000 0.000 0.017 0.010 0.000 0.000 0.000 0.000 0.000 0.027 WSW 0.000 0.000 0.002 0.006 0.000 0.023 0.000 0.000 0.000 0.030 W 0.000 0.000 0.000 0.016 0.017 0.042 0.000 0.000 0.000 0.074 WNW 0.000 0.000 0.000 0.000 0.009 0.028 0.018 0.068 0.000 0.123 NW 0.000 0.000 0.000 0.002 0.009 0.031 0.008 0.038 0.000 0.088 NNW 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 SUBTOTAL 0.000 0.000 0.068 0.108 0.063 0.173 0.036 0.106 0.000 0.554 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS C 109.390 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 12.050 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-95

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.001 0.011 0.037 0.017 0.000 0.000 0.000 0.067 NNE 0.000 0.000 0.000 0.027 0.064 0.109 0.000 0.000 0.000 0.200 NE 0.000 0.000 0.000 0.006 0.029 0.058 0.009 0.000 0.000 0.103 ENE 0.000 0.000 0.000 0.004 0.010 0.008 0.000 0.000 0.000 0.021 E 0.000 0.000 0.008 0.008 0.008 0.000 0.000 0.000 0.000 0.023 ESE 0.000 0.000 0.062 0.135 0.083 0.018 0.000 0.000 0.000 0.298 SE 0.000 0.005 0.112 0.080 0.000 0.046 0.000 0.000 0.000 0.243 SSE 0.000 0.000 0.181 0.035 0.000 0.000 0.000 0.000 0.000 0.216 S 0.000 0.001 0.197 0.091 0.000 0.000 0.000 0.000 0.000 0.288 SSW 0.000 0.001 0.086 0.221 0.031 0.000 0.000 0.000 0.000 0.339 SW 0.000 0.000 0.040 0.017 0.009 0.000 0.000 0.000 0.000 0.066 WSW 0.000 0.000 0.019 0.034 0.007 0.008 0.000 0.000 0.000 0.069 W 0.000 0.000 0.014 0.125 0.156 0.165 0.335 0.000 0.000 0.794 WNW 0.000 0.000 0.000 0.014 0.024 0.096 0.111 0.125 0.000 0.370 NW 0.000 0.000 0.000 0.004 0.048 0.115 0.070 0.000 0.000 0.237 NNW 0.000 0.000 0.002 0.011 0.077 0.072 0.018 0.000 0.000 0.180 SUBTOTAL 0.000 0.007 0.721 0.823 0.585 0.712 0.544 0.125 0.000 3.515 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS D 1051.290 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 76.490 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-96

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.043 0.046 0.015 0.000 0.000 0.000 0.000 0.104 NNE 0.000 0.000 0.019 0.098 0.050 0.017 0.000 0.000 0.000 0.184 NE 0.000 0.000 0.011 0.008 0.032 0.015 0.000 0.000 0.000 0.066 ENE 0.000 0.002 0.011 0.003 0.000 0.000 0.000 0.000 0.000 0.016 E 0.000 0.007 0.109 0.043 0.000 0.000 0.000 0.000 0.000 0.159 ESE 0.000 0.011 0.130 0.068 0.025 0.000 0.000 0.000 0.000 0.233 SE 0.000 0.009 0.109 0.007 0.000 0.000 0.000 0.000 0.000 0.125 SSE 0.000 0.021 0.078 0.000 0.000 0.000 0.000 0.000 0.000 0.098 S 0.000 0.018 0.189 0.227 0.000 0.000 0.000 0.000 0.000 0.434 SSW 0.000 0.023 0.240 0.240 0.044 0.000 0.000 0.000 0.000 0.547 SW 0.000 0.020 0.102 0.006 0.009 0.000 0.000 0.000 0.000 0.138 WSW 0.000 0.000 0.025 0.007 0.014 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.025 0.069 0.036 0.007 0.000 0.000 0.000 0.137 WNW 0.000 0.009 0.009 0.009 0.010 0.023 0.000 0.000 0.000 0.059 NW 0.000 0.000 0.005 0.004 0.000 0.074 0.000 0.000 0.000 0.082 NNW 0.000 0.001 0.016 0.042 0.012 0.033 0.000 0.000 0.000 0.105 SUBTOTAL 0.000 0.121 1.120 0.875 0.248 0.168 0.000 0.000 0.000 2.533 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS E 649.510 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 55.120 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-97

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.019 0.119 0.017 0.000 0.000 0.000 0.000 0.000 0.156 NNE 0.000 0.010 0.015 0.030 0.007 0.000 0.000 0.000 0.000 0.063 NE 0.000 0.031 0.010 0.007 0.000 0.000 0.000 0.000 0.000 0.048 ENE 0.000 0.039 0.050 0.016 0.000 0.000 0.000 0.000 0.000 0.105 E 0.000 0.033 0.051 0.013 0.000 0.000 0.000 0.000 0.000 0.097 ESE 0.000 0.013 0.081 0.006 0.000 0.031 0.000 0.000 0.000 0.131 SE 0.000 0.020 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.034 SSE 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.011 S 0.000 0.025 0.066 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSW 0.000 0.015 0.075 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.006 0.054 0.000 0.000 0.000 0.000 0.000 0.000 0.060 WSW 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.009 W 0.000 0.017 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.022 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.008 0.009 0.006 0.007 0.000 0.000 0.000 0.000 0.031 NNW 0.000 0.000 0.012 0.006 0.016 0.000 0.000 0.000 0.000 0.034 SUBTOTAL 0.002 0.246 0.571 0.101 0.030 0.031 0.000 0.000 0.000 0.980 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS F 241.450 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 21.330 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-98

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.014 0.038 0.052 0.000 0.000 0.000 0.000 0.000 0.104 NNE 0.000 0.000 0.008 0.022 0.000 0.000 0.000 0.000 0.000 0.030 NE 0.000 0.037 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.047 ENE 0.000 0.018 0.010 0.006 0.000 0.000 0.000 0.000 0.000 0.034 E 0.000 0.013 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.021 ESE 0.000 0.032 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.041 SE 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.011 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.043 0.028 0.000 0.000 0.000 0.000 0.000 0.000 0.071 SSW 0.000 0.021 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.021 SW 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.006 0.005 0.007 0.000 0.000 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.199 0.112 0.094 0.000 0.000 0.000 0.000 0.000 0.405 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS G 78.680 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 8.810 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-99

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.084 0.000 0.021 0.000 0.105 S 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.125 0.000 0.021 0.000 0.146 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS A 16.790 TOTAL HOURS OF ELEVATED STABILITY CLASS A 3.170 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-100

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.092 0.043 0.000 0.000 0.000 0.010 0.145 SSE 0.000 0.000 0.000 0.000 0.043 0.041 0.000 0.000 0.000 0.084 S 0.000 0.000 0.000 0.046 0.090 0.040 0.112 0.000 0.000 0.287 SSW 0.000 0.000 0.000 0.000 0.045 0.042 0.000 0.000 0.000 0.086 SW 0.000 0.000 0.000 0.000 0.090 0.000 0.038 0.000 0.000 0.128 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.039 0.076 0.000 0.000 0.115 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.138 0.310 0.162 0.226 0.000 0.010 0.845 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS B 28.890 TOTAL HOURS OF ELEVATED STABILITY CLASS B 18.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-101

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.151 0.000 0.000 0.191 NNE 0.000 0.000 0.000 0.000 0.045 0.081 0.188 0.000 0.000 0.313 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.089 0.000 0.000 0.000 0.000 0.089 SE 0.000 0.000 0.046 0.276 0.177 0.042 0.038 0.000 0.000 0.579 SSE 0.000 0.000 0.000 0.230 0.224 0.079 0.000 0.000 0.000 0.532 S 0.000 0.000 0.046 0.092 0.089 0.363 0.111 0.000 0.000 0.700 SSW 0.000 0.000 0.000 0.092 0.178 0.447 0.150 0.000 0.000 0.867 SW 0.000 0.000 0.000 0.046 0.090 0.041 0.074 0.000 0.000 0.250 WSW 0.000 0.000 0.000 0.000 0.043 0.043 0.000 0.000 0.000 0.086 W 0.000 0.000 0.000 0.000 0.043 0.239 0.074 0.000 0.000 0.356 WNW 0.000 0.000 0.000 0.000 0.000 0.041 0.299 0.000 0.000 0.340 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.037 0.056 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.000 0.078 0.000 0.000 0.000 0.078 SUBTOTAL 0.000 0.000 0.092 0.735 0.977 1.493 1.121 0.056 0.000 4.473 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS C 109.390 TOTAL HOURS OF ELEVATED STABILITY CLASS C 97.340 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-102

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.138 0.322 0.401 0.487 0.266 0.000 0.000 1.613 NNE 0.000 0.000 0.138 0.276 0.483 0.980 0.416 0.000 0.000 2.293 NE 0.000 0.046 0.138 0.092 0.265 0.280 0.224 0.000 0.000 1.045 ENE 0.000 0.000 0.000 0.092 0.134 0.082 0.038 0.000 0.000 0.346 E 0.000 0.000 0.046 0.138 0.133 0.000 0.000 0.000 0.000 0.317 ESE 0.000 0.000 0.092 0.230 0.358 0.248 0.151 0.000 0.000 1.078 SE 0.000 0.046 0.460 1.057 0.355 1.208 0.522 0.053 0.000 3.701 SSE 0.000 0.000 0.643 0.919 1.016 1.153 0.935 0.125 0.001 4.794 S 0.000 0.046 0.643 1.241 0.625 1.448 1.419 0.402 0.005 5.828 SSW 0.000 0.000 0.643 1.608 0.882 0.980 0.523 0.011 0.000 4.648 SW 0.000 0.000 0.643 1.057 0.929 0.533 0.074 0.064 0.000 3.300 WSW 0.000 0.000 0.551 1.241 0.765 0.905 0.113 0.074 0.000 3.648 W 0.000 0.000 0.230 1.011 1.200 1.463 0.483 0.354 0.006 4.747 WNW 0.000 0.000 0.000 0.506 0.527 0.840 0.450 0.187 0.032 2.542 NW 0.000 0.000 0.138 0.551 0.717 1.177 0.372 0.086 0.000 3.041 NNW 0.000 0.000 0.046 0.322 0.264 0.924 0.302 0.000 0.000 1.858 SUBTOTAL 0.000 0.138 4.550 10.662 9.053 12.708 6.287 1.357 0.045 44.798 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS D 1051.290 TOTAL HOURS OF ELEVATED STABILITY CLASS D 974.800 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-103

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.138 0.138 0.444 0.637 0.038 0.000 0.000 1.395 NNE 0.000 0.000 0.046 0.184 0.703 0.884 0.227 0.000 0.000 2.044 NE 0.000 0.000 0.138 0.506 0.308 0.438 0.000 0.000 0.000 1.390 ENE 0.000 0.000 0.184 0.184 0.089 0.000 0.000 0.000 0.000 0.456 E 0.000 0.000 0.138 0.460 0.223 0.125 0.000 0.000 0.000 0.946 ESE 0.000 0.000 0.046 0.184 0.307 0.449 0.075 0.015 0.000 1.077 SE 0.000 0.000 0.138 0.092 1.052 1.020 0.076 0.000 0.000 2.378 SSE 0.000 0.000 0.276 0.551 0.621 1.485 0.668 0.120 0.000 3.722 S 0.000 0.000 0.414 0.276 0.438 1.522 1.119 0.500 0.014 4.284 SSW 0.000 0.000 0.460 0.460 0.617 0.653 0.224 0.000 0.000 2.413 SW 0.000 0.000 0.460 1.195 0.713 0.120 0.075 0.000 0.000 2.563 WSW 0.000 0.046 0.230 0.368 0.219 0.362 0.000 0.000 0.000 1.224 W 0.000 0.000 0.138 0.322 0.439 0.330 0.038 0.000 0.000 1.267 WNW 0.000 0.000 0.000 0.276 0.089 0.163 0.038 0.000 0.000 0.565 NW 0.000 0.000 0.092 0.184 0.089 0.162 0.338 0.000 0.000 0.864 NNW 0.000 0.000 0.046 0.184 0.219 0.241 0.038 0.000 0.000 0.728 SUBTOTAL 0.000 0.046 2.941 5.561 6.571 8.593 2.954 0.636 0.014 27.316 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS E 649.510 TOTAL HOURS OF ELEVATED STABILITY CLASS E 594.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-104

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.092 0.173 0.367 0.000 0.000 0.000 0.724 NNE 0.000 0.000 0.138 0.138 0.179 0.644 0.000 0.000 0.000 1.099 NE 0.000 0.000 0.046 0.092 0.347 0.160 0.000 0.000 0.000 0.645 ENE 0.000 0.000 0.046 0.092 0.044 0.161 0.000 0.000 0.000 0.343 E 0.000 0.000 0.046 0.046 0.045 0.165 0.000 0.000 0.000 0.302 ESE 0.000 0.000 0.092 0.138 0.087 0.289 0.000 0.000 0.000 0.606 SE 0.000 0.000 0.046 0.046 0.130 0.444 0.000 0.000 0.000 0.666 SSE 0.000 0.000 0.046 0.230 0.134 0.441 0.038 0.000 0.000 0.888 S 0.000 0.000 0.046 0.138 0.264 1.048 0.488 0.000 0.000 1.984 SSW 0.000 0.000 0.230 0.092 0.269 0.200 0.000 0.000 0.000 0.791 SW 0.000 0.000 0.000 0.230 0.221 0.042 0.000 0.000 0.000 0.493 WSW 0.000 0.000 0.184 0.092 0.045 0.000 0.000 0.000 0.000 0.321 W 0.000 0.000 0.138 0.138 0.091 0.000 0.000 0.000 0.000 0.366 WNW 0.000 0.000 0.138 0.092 0.043 0.000 0.000 0.000 0.000 0.273 NW 0.000 0.046 0.138 0.092 0.043 0.000 0.000 0.000 0.000 0.319 NNW 0.000 0.046 0.046 0.000 0.089 0.078 0.038 0.000 0.000 0.296 SUBTOTAL 0.000 0.092 1.471 1.746 2.204 4.040 0.563 0.000 0.000 10.116 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS F 241.450 TOTAL HOURS OF ELEVATED STABILITY CLASS F 220.120 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-105

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.122 0.000 0.000 0.000 0.122 NNE 0.000 0.000 0.138 0.000 0.000 0.040 0.000 0.000 0.000 0.178 NE 0.000 0.000 0.000 0.184 0.090 0.120 0.000 0.000 0.000 0.394 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.092 0.046 0.000 0.042 0.000 0.000 0.000 0.180 ESE 0.000 0.000 0.184 0.138 0.000 0.043 0.000 0.000 0.000 0.364 SE 0.000 0.000 0.138 0.092 0.044 0.123 0.000 0.000 0.000 0.397 SSE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 S 0.000 0.000 0.046 0.000 0.000 0.119 0.000 0.000 0.000 0.165 SSW 0.000 0.092 0.138 0.092 0.089 0.000 0.000 0.000 0.000 0.411 SW 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 WSW 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.138 W 0.000 0.046 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.276 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.230 0.046 0.000 0.040 0.000 0.000 0.000 0.315 SUBTOTAL 0.000 0.138 1.379 0.781 0.223 0.690 0.000 0.000 0.000 3.211 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS G 78.680 TOTAL HOURS OF ELEVATED STABILITY CLASS G 69.870 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-106

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

THIRD QUARTER E-107

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 NNE 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 SE 0.000 0.000 0.003 0.025 0.000 0.000 0.000 0.000 0.000 0.028 SSE 0.000 0.000 0.017 0.010 0.000 0.000 0.000 0.000 0.000 0.027 S 0.000 0.000 0.029 0.000 0.000 0.000 0.000 0.000 0.000 0.029 SSW 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SW 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.005 WSW 0.000 0.000 0.003 0.000 0.010 0.000 0.000 0.000 0.000 0.013 W 0.000 0.000 0.000 0.008 0.019 0.000 0.000 0.000 0.000 0.027 WNW 0.000 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.007 NW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NNW 0.000 0.000 0.000 0.000 0.005 0.030 0.000 0.000 0.000 0.035 SUBTOTAL 0.000 0.000 0.064 0.046 0.041 0.129 0.000 0.000 0.000 0.280 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS A 8.930 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 6.160 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-108

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.021 0.048 0.000 0.000 0.000 0.069 NNE 0.000 0.000 0.000 0.000 0.005 0.052 0.000 0.000 0.000 0.057 NE 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.003 0.003 0.000 0.000 0.000 0.000 0.000 0.005 SSE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.022 0.000 0.000 0.000 0.000 0.000 0.000 0.022 SSW 0.000 0.000 0.000 0.033 0.000 0.000 0.000 0.000 0.000 0.033 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.003 0.005 0.010 0.000 0.000 0.000 0.017 W 0.000 0.000 0.000 0.014 0.030 0.017 0.000 0.000 0.000 0.061 WNW 0.000 0.000 0.000 0.000 0.017 0.051 0.000 0.000 0.000 0.069 NW 0.000 0.000 0.000 0.000 0.009 0.045 0.000 0.000 0.000 0.054 NNW 0.000 0.000 0.000 0.000 0.005 0.012 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.000 0.028 0.053 0.093 0.240 0.000 0.000 0.000 0.414 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS B 25.880 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 9.100 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-109

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.012 NNE 0.000 0.000 0.000 0.000 0.010 0.029 0.000 0.000 0.000 0.039 NE 0.000 0.000 0.000 0.000 0.010 0.029 0.000 0.000 0.000 0.039 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.000 0.016 0.000 0.000 0.000 0.000 0.016 SE 0.000 0.000 0.004 0.007 0.000 0.000 0.000 0.000 0.000 0.011 SSE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.015 0.009 0.000 0.000 0.000 0.000 0.000 0.024 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.001 0.005 0.011 0.010 0.000 0.000 0.000 0.026 W 0.000 0.000 0.005 0.014 0.042 0.007 0.000 0.000 0.000 0.068 WNW 0.000 0.000 0.000 0.001 0.003 0.071 0.000 0.000 0.000 0.075 NW 0.000 0.000 0.000 0.002 0.006 0.017 0.000 0.000 0.000 0.025 NNW 0.000 0.000 0.000 0.001 0.005 0.013 0.000 0.000 0.000 0.019 SUBTOTAL 0.000 0.000 0.028 0.040 0.114 0.176 0.000 0.000 0.000 0.358 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS C 89.800 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 7.880 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-110

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.019 0.097 0.056 0.020 0.000 0.000 0.192 NNE 0.000 0.000 0.000 0.025 0.112 0.065 0.000 0.000 0.000 0.203 NE 0.000 0.000 0.000 0.021 0.091 0.159 0.000 0.000 0.000 0.271 ENE 0.000 0.000 0.000 0.017 0.018 0.018 0.000 0.000 0.000 0.053 E 0.000 0.000 0.001 0.031 0.076 0.000 0.000 0.000 0.000 0.109 ESE 0.000 0.000 0.034 0.090 0.084 0.019 0.000 0.000 0.000 0.226 SE 0.000 0.000 0.032 0.025 0.000 0.000 0.000 0.000 0.000 0.057 SSE 0.000 0.000 0.038 0.003 0.000 0.000 0.000 0.000 0.000 0.041 S 0.000 0.000 0.150 0.008 0.000 0.000 0.000 0.000 0.000 0.158 SSW 0.000 0.000 0.179 0.166 0.037 0.000 0.000 0.000 0.000 0.382 SW 0.000 0.000 0.030 0.012 0.000 0.000 0.000 0.000 0.000 0.042 WSW 0.000 0.000 0.020 0.020 0.009 0.000 0.000 0.000 0.000 0.049 W 0.000 0.000 0.004 0.066 0.078 0.058 0.014 0.000 0.000 0.220 WNW 0.000 0.000 0.000 0.013 0.054 0.055 0.055 0.000 0.000 0.177 NW 0.000 0.000 0.000 0.004 0.020 0.019 0.045 0.000 0.000 0.088 NNW 0.000 0.000 0.000 0.005 0.014 0.015 0.000 0.000 0.000 0.034 SUBTOTAL 0.000 0.000 0.488 0.525 0.689 0.464 0.135 0.000 0.000 2.301 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS D 1050.510 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 50.630 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-111

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.065 0.051 0.015 0.046 0.055 0.000 0.000 0.233 NNE 0.000 0.000 0.036 0.191 0.142 0.079 0.000 0.000 0.000 0.448 NE 0.000 0.000 0.012 0.059 0.061 0.127 0.000 0.000 0.000 0.258 ENE 0.000 0.000 0.035 0.021 0.005 0.000 0.000 0.000 0.000 0.061 E 0.000 0.003 0.055 0.046 0.007 0.033 0.000 0.000 0.000 0.145 ESE 0.000 0.001 0.077 0.099 0.007 0.024 0.000 0.000 0.000 0.208 SE 0.000 0.001 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.003 SSE 0.000 0.000 0.035 0.000 0.000 0.000 0.000 0.000 0.000 0.035 S 0.000 0.016 0.048 0.043 0.000 0.000 0.000 0.000 0.000 0.107 SSW 0.000 0.008 0.068 0.000 0.000 0.000 0.000 0.000 0.000 0.075 SW 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 WSW 0.000 0.000 0.004 0.004 0.000 0.000 0.000 0.000 0.000 0.008 W 0.000 0.000 0.000 0.020 0.023 0.008 0.000 0.000 0.000 0.051 WNW 0.000 0.000 0.000 0.005 0.006 0.007 0.000 0.000 0.000 0.018 NW 0.000 0.000 0.000 0.005 0.000 0.023 0.000 0.000 0.000 0.027 NNW 0.000 0.000 0.019 0.030 0.019 0.008 0.000 0.000 0.000 0.075 SUBTOTAL 0.000 0.031 0.462 0.574 0.285 0.354 0.055 0.000 0.000 1.762 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS E 580.720 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 38.760 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-112

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.115 0.055 0.000 0.000 0.000 0.000 0.000 0.170 NNE 0.000 0.000 0.065 0.201 0.031 0.000 0.000 0.000 0.000 0.298 NE 0.000 0.000 0.018 0.039 0.007 0.000 0.000 0.000 0.000 0.064 ENE 0.000 0.003 0.033 0.031 0.015 0.000 0.000 0.000 0.000 0.082 E 0.000 0.000 0.067 0.033 0.000 0.000 0.000 0.000 0.000 0.100 ESE 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.012 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.014 SSE 0.000 0.004 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.030 0.007 0.000 0.000 0.000 0.000 0.000 0.037 SUBTOTAL 0.000 0.022 0.341 0.366 0.054 0.000 0.000 0.000 0.000 0.782 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS F 367.810 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 17.210 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-113

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.002 0.070 0.041 0.000 0.000 0.000 0.000 0.000 0.114 NNE 0.000 0.002 0.037 0.027 0.000 0.000 0.000 0.000 0.000 0.066 NE 0.000 0.001 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.012 ENE 0.000 0.001 0.019 0.000 0.000 0.000 0.000 0.000 0.000 0.020 E 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.010 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.006 0.148 0.068 0.000 0.000 0.000 0.000 0.000 0.222 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS G 76.350 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 4.890 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-114

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.042 0.041 0.000 0.000 0.000 0.084 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.042 0.000 0.000 0.000 0.000 0.042 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.085 0.041 0.000 0.000 0.000 0.126 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS A 8.930 TOTAL HOURS OF ELEVATED STABILITY CLASS A 2.770 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-115

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.079 0.037 0.000 0.000 0.116 NNE 0.000 0.000 0.000 0.000 0.000 0.156 0.000 0.000 0.000 0.156 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.122 0.000 0.000 0.000 0.122 SSE 0.000 0.000 0.000 0.045 0.045 0.042 0.000 0.000 0.000 0.132 S 0.000 0.000 0.000 0.000 0.000 0.079 0.000 0.000 0.000 0.079 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.000 0.043 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 NNW 0.000 0.000 0.000 0.000 0.000 0.039 0.038 0.000 0.000 0.077 SUBTOTAL 0.000 0.000 0.000 0.045 0.088 0.517 0.113 0.000 0.000 0.763 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS B 25.880 TOTAL HOURS OF ELEVATED STABILITY CLASS B 16.780 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-116

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.437 0.038 0.000 0.000 0.475 NNE 0.000 0.000 0.000 0.000 0.000 0.280 0.075 0.000 0.000 0.355 NE 0.000 0.000 0.000 0.000 0.000 0.362 0.000 0.000 0.000 0.362 ENE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.087 0.038 0.037 0.000 0.000 0.162 SE 0.000 0.000 0.045 0.318 0.128 0.082 0.000 0.000 0.000 0.574 SSE 0.000 0.000 0.000 0.045 0.085 0.000 0.000 0.000 0.000 0.131 S 0.000 0.000 0.000 0.000 0.000 0.161 0.038 0.000 0.000 0.199 SSW 0.000 0.000 0.000 0.045 0.044 0.041 0.000 0.000 0.000 0.130 SW 0.000 0.000 0.000 0.000 0.090 0.080 0.000 0.000 0.000 0.170 WSW 0.000 0.000 0.000 0.227 0.134 0.081 0.000 0.000 0.000 0.443 W 0.000 0.000 0.000 0.000 0.130 0.199 0.000 0.000 0.000 0.329 WNW 0.000 0.000 0.000 0.000 0.000 0.040 0.038 0.000 0.000 0.077 NW 0.000 0.000 0.000 0.000 0.000 0.119 0.038 0.000 0.000 0.156 NNW 0.000 0.000 0.000 0.000 0.000 0.040 0.075 0.000 0.000 0.116 SUBTOTAL 0.000 0.000 0.045 0.636 0.744 1.960 0.338 0.000 0.000 3.724 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS C 89.800 TOTAL HOURS OF ELEVATED STABILITY CLASS C 81.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-117

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.091 0.273 0.173 1.040 0.186 0.059 0.000 1.821 NNE 0.000 0.000 0.091 0.227 0.520 1.280 0.370 0.000 0.000 2.487 NE 0.000 0.000 0.273 0.136 0.394 1.129 0.150 0.000 0.000 2.082 ENE 0.000 0.000 0.136 0.273 0.216 0.203 0.000 0.000 0.000 0.828 E 0.000 0.000 0.045 0.273 0.300 0.478 0.000 0.000 0.000 1.097 ESE 0.000 0.000 0.227 0.500 0.348 0.475 0.073 0.000 0.000 1.623 SE 0.000 0.045 1.364 1.909 0.881 0.355 0.443 0.105 0.000 5.102 SSE 0.000 0.000 1.227 1.000 0.440 0.163 0.037 0.032 0.000 2.900 S 0.000 0.045 0.545 1.227 0.965 0.952 1.049 0.025 0.036 4.846 SSW 0.000 0.000 1.500 2.000 0.712 0.922 0.110 0.000 0.000 5.244 SW 0.000 0.000 0.773 1.818 1.020 0.290 0.073 0.000 0.000 3.974 WSW 0.000 0.000 0.500 2.045 0.749 0.885 0.038 0.065 0.000 4.282 W 0.000 0.000 0.227 1.318 1.093 0.762 0.074 0.065 0.000 3.539 WNW 0.000 0.000 0.091 0.409 0.866 1.558 0.075 0.081 0.000 3.081 NW 0.000 0.000 0.136 0.364 0.217 0.759 0.149 0.100 0.000 1.725 NNW 0.000 0.000 0.227 0.136 0.175 0.279 0.000 0.000 0.000 0.818 SUBTOTAL 0.000 0.091 7.455 13.909 9.070 11.530 2.826 0.532 0.036 45.449 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS D 1050.510 TOTAL HOURS OF ELEVATED STABILITY CLASS D 999.880 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-118

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.273 0.346 1.041 0.223 0.061 0.000 2.080 NNE 0.000 0.000 0.136 0.227 0.351 1.662 0.520 0.000 0.000 2.897 NE 0.000 0.000 0.091 0.045 0.302 1.140 0.488 0.000 0.000 2.066 ENE 0.000 0.000 0.091 0.182 0.350 0.245 0.000 0.000 0.000 0.869 E 0.000 0.000 0.182 0.455 0.262 0.249 0.000 0.000 0.000 1.147 ESE 0.000 0.045 0.182 0.545 1.136 0.446 0.000 0.034 0.000 2.388 SE 0.000 0.045 0.182 0.818 0.619 0.365 0.037 0.000 0.000 2.066 SSE 0.000 0.045 0.364 0.955 0.134 0.194 0.074 0.028 0.010 1.804 S 0.000 0.045 0.364 1.045 0.176 0.565 0.038 0.000 0.000 2.233 SSW 0.000 0.000 0.455 0.500 0.480 0.285 0.038 0.000 0.000 1.757 SW 0.000 0.000 0.545 0.591 0.135 0.082 0.000 0.000 0.000 1.354 WSW 0.000 0.000 0.364 0.727 0.175 0.000 0.000 0.000 0.000 1.265 W 0.000 0.045 0.273 0.409 0.485 0.121 0.038 0.000 0.000 1.370 WNW 0.000 0.000 0.045 0.136 0.086 0.079 0.000 0.000 0.000 0.346 NW 0.000 0.000 0.091 0.045 0.044 0.082 0.038 0.000 0.000 0.300 NNW 0.000 0.000 0.136 0.091 0.179 0.285 0.000 0.000 0.000 0.691 SUBTOTAL 0.000 0.227 3.636 7.045 5.260 6.839 1.494 0.123 0.010 24.635 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS E 580.720 TOTAL HOURS OF ELEVATED STABILITY CLASS E 541.960 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-119

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.002 0.000 0.136 0.136 0.088 0.635 0.000 0.000 0.000 0.997 NNE 0.001 0.000 0.091 0.182 0.264 0.947 0.490 0.000 0.000 1.975 NE 0.002 0.000 0.182 0.273 0.522 1.289 0.075 0.000 0.000 2.343 ENE 0.002 0.000 0.182 0.455 0.436 0.363 0.075 0.000 0.000 1.513 E 0.004 0.000 0.318 0.318 0.780 0.492 0.000 0.000 0.000 1.913 ESE 0.005 0.000 0.364 0.636 0.829 0.574 0.000 0.000 0.000 2.407 SE 0.009 0.045 0.682 0.545 0.577 0.084 0.000 0.000 0.000 1.943 SSE 0.004 0.045 0.227 0.091 0.223 0.000 0.000 0.000 0.000 0.590 S 0.001 0.000 0.091 0.091 0.221 0.042 0.000 0.000 0.000 0.447 SSW 0.002 0.000 0.182 0.045 0.045 0.000 0.000 0.000 0.000 0.274 SW 0.004 0.045 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.276 WSW 0.002 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.138 W 0.002 0.045 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.275 WNW 0.001 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.138 NW 0.004 0.000 0.273 0.136 0.000 0.000 0.000 0.000 0.000 0.413 NNW 0.000 0.000 0.000 0.136 0.000 0.159 0.000 0.000 0.000 0.295 SUBTOTAL 0.045 0.227 3.273 3.182 3.985 4.584 0.640 0.000 0.000 15.936 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS F 367.810 TOTAL HOURS OF ELEVATED STABILITY CLASS F 350.600 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-120

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.045 0.000 0.274 0.000 0.000 0.000 0.319 NNE 0.000 0.000 0.000 0.136 0.175 0.116 0.038 0.000 0.000 0.466 NE 0.000 0.045 0.000 0.045 0.045 0.118 0.000 0.000 0.000 0.255 ENE 0.000 0.000 0.091 0.182 0.000 0.042 0.000 0.000 0.000 0.315 E 0.000 0.000 0.091 0.136 0.087 0.042 0.000 0.000 0.000 0.356 ESE 0.000 0.045 0.045 0.136 0.045 0.000 0.000 0.000 0.000 0.273 SE 0.000 0.045 0.091 0.273 0.000 0.000 0.000 0.000 0.000 0.409 SSE 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.182 S 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SSW 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.136 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WNW 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.045 NW 0.000 0.091 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.000 0.038 SUBTOTAL 0.000 0.273 0.955 1.000 0.353 0.630 0.038 0.000 0.000 3.248 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS G 76.350 TOTAL HOURS OF ELEVATED STABILITY CLASS G 71.460 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-121

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FOURTH QUARTER E-122

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.006 0.106 0.000 0.000 0.000 0.112 NNE 0.000 0.000 0.000 0.000 0.005 0.022 0.000 0.000 0.000 0.027 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.008 0.032 0.009 0.000 0.000 0.000 0.050 SE 0.000 0.000 0.024 0.051 0.000 0.000 0.000 0.000 0.000 0.075 SSE 0.000 0.000 0.088 0.032 0.000 0.000 0.000 0.000 0.000 0.121 S 0.000 0.000 0.036 0.046 0.000 0.000 0.000 0.000 0.000 0.081 SSW 0.000 0.000 0.009 0.027 0.008 0.000 0.000 0.000 0.000 0.045 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NW 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 NNW 0.000 0.000 0.000 0.000 0.000 0.017 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.000 0.158 0.164 0.052 0.172 0.000 0.000 0.000 0.546 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS A 23.500 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 11.610 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-123

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.005 0.031 0.000 0.000 0.000 0.035 NNE 0.000 0.000 0.000 0.000 0.019 0.042 0.000 0.000 0.000 0.061 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.008 0.042 0.000 0.000 0.000 0.000 0.049 SE 0.000 0.000 0.017 0.040 0.000 0.000 0.000 0.000 0.000 0.057 SSE 0.000 0.005 0.015 0.001 0.000 0.000 0.000 0.000 0.000 0.021 S 0.000 0.000 0.007 0.025 0.000 0.000 0.000 0.000 0.000 0.032 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.003 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.009 0.000 0.000 0.055 NW 0.000 0.000 0.000 0.000 0.000 0.033 0.009 0.000 0.000 0.042 NNW 0.000 0.000 0.000 0.000 0.009 0.008 0.000 0.000 0.000 0.016 SUBTOTAL 0.000 0.005 0.039 0.077 0.074 0.159 0.019 0.000 0.000 0.373 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS B 29.570 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 7.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-124

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.027 0.009 0.000 0.000 0.000 0.036 NNE 0.000 0.000 0.000 0.000 0.019 0.013 0.000 0.000 0.000 0.032 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.003 0.024 0.035 0.000 0.000 0.000 0.063 SE 0.000 0.006 0.003 0.021 0.047 0.000 0.000 0.000 0.000 0.077 SSE 0.000 0.000 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.023 S 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.012 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.004 0.003 0.000 0.000 0.000 0.000 0.000 0.007 WSW 0.000 0.000 0.005 0.004 0.006 0.000 0.000 0.000 0.000 0.015 W 0.000 0.000 0.000 0.000 0.000 0.015 0.000 0.000 0.000 0.015 WNW 0.000 0.000 0.000 0.000 0.008 0.015 0.009 0.000 0.000 0.032 NW 0.000 0.000 0.000 0.000 0.002 0.009 0.030 0.000 0.000 0.041 NNW 0.000 0.000 0.000 0.000 0.010 0.028 0.000 0.000 0.000 0.038 SUBTOTAL 0.000 0.006 0.047 0.031 0.143 0.123 0.040 0.000 0.000 0.389 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS C 65.490 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.280 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-125

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.054 0.226 0.068 0.000 0.000 0.000 0.349 NNE 0.000 0.000 0.000 0.026 0.199 0.056 0.000 0.000 0.000 0.281 NE 0.000 0.000 0.000 0.013 0.027 0.012 0.000 0.000 0.000 0.052 ENE 0.000 0.000 0.000 0.000 0.007 0.060 0.000 0.000 0.000 0.067 E 0.000 0.000 0.005 0.011 0.052 0.000 0.000 0.000 0.000 0.069 ESE 0.000 0.000 0.040 0.065 0.135 0.058 0.000 0.000 0.000 0.298 SE 0.000 0.021 0.116 0.101 0.000 0.000 0.000 0.000 0.000 0.238 SSE 0.000 0.002 0.106 0.012 0.000 0.000 0.000 0.000 0.000 0.120 S 0.000 0.000 0.047 0.070 0.063 0.000 0.000 0.000 0.000 0.181 SSW 0.000 0.000 0.012 0.017 0.009 0.000 0.000 0.000 0.000 0.038 SW 0.000 0.000 0.005 0.008 0.000 0.000 0.000 0.000 0.000 0.013 WSW 0.000 0.000 0.007 0.023 0.011 0.009 0.000 0.000 0.000 0.050 W 0.000 0.000 0.003 0.025 0.048 0.071 0.000 0.000 0.000 0.147 WNW 0.000 0.000 0.000 0.001 0.048 0.193 0.054 0.071 0.047 0.415 NW 0.000 0.000 0.000 0.009 0.041 0.162 0.185 0.090 0.000 0.487 NNW 0.000 0.000 0.000 0.012 0.146 0.284 0.029 0.000 0.000 0.472 SUBTOTAL 0.000 0.023 0.341 0.449 1.015 0.973 0.268 0.161 0.047 3.277 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS D 871.350 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 69.670 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-126

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.017 0.101 0.028 0.045 0.000 0.000 0.000 0.191 NNE 0.000 0.000 0.017 0.073 0.104 0.000 0.000 0.000 0.000 0.194 NE 0.000 0.000 0.000 0.037 0.039 0.000 0.000 0.000 0.000 0.076 ENE 0.000 0.000 0.002 0.004 0.000 0.000 0.000 0.000 0.000 0.006 E 0.000 0.016 0.095 0.123 0.022 0.000 0.000 0.000 0.000 0.256 ESE 0.000 0.032 0.283 0.325 0.065 0.000 0.000 0.000 0.000 0.705 SE 0.000 0.017 0.145 0.060 0.000 0.000 0.000 0.000 0.000 0.222 SSE 0.000 0.026 0.280 0.083 0.000 0.000 0.000 0.000 0.000 0.389 S 0.000 0.000 0.286 0.261 0.230 0.131 0.000 0.000 0.000 0.908 SSW 0.000 0.005 0.042 0.024 0.010 0.075 0.000 0.000 0.000 0.156 SW 0.000 0.001 0.002 0.005 0.000 0.000 0.000 0.000 0.000 0.009 WSW 0.000 0.000 0.001 0.004 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.010 0.070 0.044 0.016 0.000 0.000 0.000 0.140 WNW 0.000 0.008 0.004 0.010 0.018 0.000 0.047 0.000 0.000 0.086 NW 0.000 0.001 0.000 0.015 0.021 0.101 0.010 0.000 0.000 0.148 NNW 0.000 0.000 0.015 0.091 0.100 0.101 0.000 0.000 0.000 0.306 SUBTOTAL 0.000 0.107 1.200 1.286 0.681 0.468 0.057 0.000 0.000 3.799 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS E 748.740 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 80.760 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-127

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.085 0.069 0.000 0.000 0.000 0.000 0.000 0.154 NNE 0.000 0.000 0.020 0.060 0.008 0.000 0.000 0.000 0.000 0.088 NE 0.000 0.005 0.012 0.006 0.000 0.000 0.000 0.000 0.000 0.024 ENE 0.000 0.017 0.026 0.012 0.000 0.000 0.000 0.000 0.000 0.056 E 0.000 0.027 0.140 0.092 0.000 0.000 0.000 0.000 0.000 0.260 ESE 0.000 0.025 0.118 0.025 0.000 0.000 0.000 0.000 0.000 0.169 SE 0.000 0.027 0.033 0.000 0.000 0.000 0.000 0.000 0.000 0.060 SSE 0.000 0.050 0.113 0.000 0.000 0.000 0.000 0.000 0.000 0.163 S 0.000 0.008 0.028 0.035 0.175 0.067 0.000 0.000 0.000 0.313 SSW 0.000 0.031 0.018 0.000 0.000 0.000 0.000 0.000 0.000 0.049 SW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.009 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.011 W 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.004 WNW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NW 0.000 0.000 0.007 0.003 0.000 0.000 0.000 0.000 0.000 0.009 NNW 0.000 0.000 0.040 0.047 0.014 0.000 0.000 0.000 0.000 0.101 SUBTOTAL 0.000 0.203 0.648 0.350 0.197 0.067 0.000 0.000 0.000 1.465 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS F 278.180 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 31.140 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-128

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.102 0.048 0.000 0.000 0.000 0.000 0.000 0.150 NNE 0.000 0.002 0.019 0.007 0.000 0.000 0.000 0.000 0.000 0.028 NE 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.009 ENE 0.000 0.012 0.046 0.003 0.000 0.000 0.000 0.000 0.000 0.061 E 0.000 0.035 0.041 0.005 0.000 0.000 0.000 0.000 0.000 0.081 ESE 0.000 0.006 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.016 SE 0.000 0.002 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.015 SSE 0.000 0.010 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.019 S 0.000 0.004 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.012 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 NW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.000 0.048 0.024 0.000 0.000 0.000 0.000 0.000 0.071 SUBTOTAL 0.000 0.071 0.309 0.086 0.000 0.000 0.000 0.000 0.000 0.466 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS G 109.170 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 9.910 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-129

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 SE 0.000 0.000 0.000 0.000 0.000 0.084 0.039 0.000 0.000 0.123 SSE 0.000 0.000 0.000 0.000 0.091 0.084 0.076 0.069 0.000 0.320 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.040 0.039 0.000 0.000 0.078 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.091 0.207 0.191 0.069 0.000 0.559 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS A 23.500 TOTAL HOURS OF ELEVATED STABILITY CLASS A 11.890 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-130

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.231 0.000 0.000 0.271 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 SE 0.000 0.000 0.000 0.000 0.135 0.124 0.115 0.000 0.000 0.374 SSE 0.000 0.000 0.000 0.000 0.091 0.042 0.000 0.000 0.000 0.133 S 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 SSW 0.000 0.000 0.000 0.000 0.000 0.082 0.039 0.000 0.000 0.121 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.226 0.370 0.423 0.000 0.000 1.018 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS B 29.570 TOTAL HOURS OF ELEVATED STABILITY CLASS B 21.650 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-131

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.366 0.154 0.000 0.000 0.520 NNE 0.000 0.000 0.000 0.000 0.000 0.327 0.038 0.000 0.000 0.365 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.088 0.120 0.077 0.000 0.000 0.285 SE 0.000 0.000 0.000 0.094 0.228 0.120 0.076 0.023 0.000 0.541 SSE 0.000 0.000 0.000 0.094 0.089 0.043 0.156 0.000 0.000 0.382 S 0.000 0.000 0.000 0.047 0.000 0.042 0.039 0.000 0.000 0.128 SSW 0.000 0.000 0.000 0.047 0.045 0.169 0.000 0.000 0.000 0.262 SW 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.000 0.044 WSW 0.000 0.000 0.000 0.000 0.044 0.041 0.000 0.000 0.000 0.086 W 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.282 0.539 1.269 0.578 0.023 0.000 2.691 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS C 65.490 TOTAL HOURS OF ELEVATED STABILITY CLASS C 57.210 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-132

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.094 0.188 0.329 0.497 2.843 0.999 0.000 0.000 4.951 NNE 0.000 0.000 0.235 0.517 0.405 2.046 0.346 0.000 0.000 3.550 NE 0.000 0.000 0.094 0.188 0.684 0.169 0.000 0.000 0.000 1.135 ENE 0.000 0.000 0.141 0.141 0.275 0.085 0.153 0.000 0.000 0.794 E 0.000 0.047 0.000 0.094 0.000 0.040 0.077 0.000 0.000 0.258 ESE 0.000 0.047 0.094 0.376 0.269 0.289 0.269 0.000 0.000 1.344 SE 0.000 0.000 0.188 1.129 0.592 0.666 0.958 0.311 0.000 3.844 SSE 0.000 0.000 0.706 0.376 0.322 1.025 0.884 0.238 0.000 3.551 S 0.000 0.000 0.329 0.517 0.178 0.649 0.381 0.214 0.000 2.270 SSW 0.000 0.000 0.376 0.235 0.044 0.166 0.308 0.040 0.000 1.169 SW 0.000 0.047 0.470 0.376 0.272 0.213 0.000 0.000 0.000 1.378 WSW 0.000 0.047 0.329 0.659 0.272 0.294 0.039 0.000 0.000 1.639 W 0.000 0.000 0.470 0.470 0.588 0.997 0.422 0.000 0.000 2.948 WNW 0.000 0.000 0.188 0.423 0.448 0.785 0.730 0.110 0.009 2.693 NW 0.000 0.000 0.141 0.235 0.503 0.782 0.723 0.312 0.004 2.701 NNW 0.000 0.000 0.094 0.094 0.498 1.963 0.805 0.028 0.000 3.483 SUBTOTAL 0.000 0.282 4.045 6.162 5.849 13.009 7.094 1.254 0.013 37.708 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS D 871.350 TOTAL HOURS OF ELEVATED STABILITY CLASS D 801.680 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-133

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.188 0.329 0.634 0.992 0.077 0.000 0.000 2.220 NNE 0.000 0.000 0.141 0.188 0.135 0.940 0.039 0.000 0.000 1.443 NE 0.000 0.094 0.141 0.282 0.311 0.625 0.000 0.000 0.000 1.453 ENE 0.000 0.000 0.000 0.188 0.091 0.000 0.000 0.000 0.000 0.279 E 0.000 0.000 0.047 0.282 0.179 0.080 0.000 0.000 0.000 0.588 ESE 0.000 0.000 0.188 0.282 0.638 1.952 0.078 0.000 0.000 3.138 SE 0.000 0.000 0.094 0.188 0.450 1.844 0.730 0.045 0.000 3.351 SSE 0.000 0.000 0.376 0.517 0.451 1.513 1.264 0.226 0.000 4.348 S 0.000 0.047 0.329 0.329 0.857 1.233 0.959 0.365 0.018 4.137 SSW 0.000 0.047 0.376 1.082 0.505 0.579 0.574 0.133 0.033 3.329 SW 0.000 0.000 0.470 0.659 0.364 0.212 0.000 0.000 0.000 1.705 WSW 0.000 0.000 0.141 0.282 0.181 0.128 0.077 0.000 0.000 0.810 W 0.000 0.000 0.047 0.141 0.272 0.501 0.038 0.000 0.000 0.999 WNW 0.000 0.000 0.047 0.047 0.179 0.082 0.078 0.000 0.000 0.433 NW 0.000 0.000 0.188 0.141 0.224 0.866 0.308 0.000 0.000 1.727 NNW 0.000 0.000 0.000 0.188 0.452 0.664 0.155 0.000 0.000 1.459 SUBTOTAL 0.000 0.188 2.775 5.127 5.921 12.213 4.375 0.769 0.051 31.420 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS E 748.740 TOTAL HOURS OF ELEVATED STABILITY CLASS E 667.980 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-134

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.047 0.228 1.207 0.078 0.000 0.000 1.560 NNE 0.000 0.000 0.047 0.094 0.091 0.488 0.000 0.000 0.000 0.720 NE 0.000 0.000 0.000 0.047 0.046 0.244 0.000 0.000 0.000 0.337 ENE 0.000 0.000 0.047 0.141 0.092 0.169 0.000 0.000 0.000 0.449 E 0.000 0.000 0.141 0.141 0.179 0.425 0.000 0.000 0.000 0.886 ESE 0.000 0.000 0.047 0.141 0.404 1.003 0.000 0.000 0.000 1.595 SE 0.000 0.000 0.094 0.047 0.585 1.179 0.000 0.000 0.000 1.905 SSE 0.000 0.000 0.141 0.094 0.407 0.294 0.116 0.000 0.000 1.052 S 0.000 0.047 0.094 0.094 0.270 0.331 0.115 0.000 0.000 0.952 SSW 0.000 0.000 0.000 0.376 0.182 0.041 0.000 0.000 0.000 0.599 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.047 0.046 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.047 0.188 0.183 0.000 0.000 0.000 0.000 0.419 NW 0.000 0.000 0.047 0.047 0.225 0.169 0.000 0.000 0.000 0.488 NNW 0.000 0.000 0.000 0.000 0.271 0.246 0.000 0.000 0.000 0.517 SUBTOTAL 0.000 0.047 0.706 1.552 3.210 5.796 0.310 0.000 0.000 11.620 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS F 278.180 TOTAL HOURS OF ELEVATED STABILITY CLASS F 247.040 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-135

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.141 0.047 0.250 0.000 0.000 0.000 0.438 NNE 0.000 0.000 0.000 0.000 0.045 0.041 0.000 0.000 0.000 0.086 NE 0.000 0.000 0.094 0.141 0.000 0.000 0.000 0.000 0.000 0.235 ENE 0.000 0.000 0.000 0.000 0.045 0.040 0.000 0.000 0.000 0.086 E 0.000 0.000 0.047 0.188 0.044 0.044 0.000 0.000 0.000 0.323 ESE 0.000 0.000 0.047 0.659 0.416 0.298 0.000 0.000 0.000 1.419 SE 0.000 0.000 0.141 0.141 0.543 0.130 0.000 0.000 0.000 0.955 SSE 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.141 S 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.235 0.047 0.046 0.000 0.000 0.000 0.000 0.328 NW 0.000 0.000 0.141 0.047 0.046 0.000 0.000 0.000 0.000 0.234 NNW 0.000 0.000 0.094 0.141 0.000 0.000 0.000 0.000 0.000 0.235 SUBTOTAL 0.000 0.094 0.941 1.599 1.231 0.804 0.000 0.000 0.000 4.669 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS G 109.170 TOTAL HOURS OF ELEVATED STABILITY CLASS G 99.260 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-136

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FIRST QUARTER E-137

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.046 0.000 0.186 0.000 0.000 0.232 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.046 0.000 0.093 0.186 0.232 0.000 0.000 0.557 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS A 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 10.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-138

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.278 0.139 0.000 0.418 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.046 0.232 0.371 0.139 0.000 0.835 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS B 18 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 18 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 13.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-139

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.000 0.696 0.093 0.000 0.835 NNE 0.000 0.000 0.000 0.000 0.000 0.139 0.232 0.000 0.000 0.371 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.186 0.046 0.000 0.000 0.278 SE 0.000 0.000 0.000 0.046 0.046 0.000 0.139 0.093 0.000 0.325 SSE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.093 S 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.093 SSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.046 0.000 0.046 0.046 0.046 0.000 0.186 WSW 0.000 0.000 0.000 0.000 0.000 0.046 0.093 0.093 0.000 0.232 W 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.232 0.046 0.000 0.278 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.186 0.000 0.000 0.232 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0.557 0.000 0.000 0.603 SUBTOTAL 0.000 0.000 0.046 0.139 0.093 0.650 2.367 0.418 0.000 3.712 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS C 80 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 80 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 14.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-140

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.000 0.093 0.139 0.650 1.763 0.650 0.000 3.341 NNE 0.000 0.000 0.093 0.232 0.325 1.067 1.206 0.093 0.000 3.016 NE 0.000 0.000 0.232 0.046 0.046 0.882 0.325 0.000 0.000 1.531 ENE 0.000 0.000 0.046 0.139 0.046 0.278 0.000 0.000 0.000 0.510 E 0.000 0.046 0.046 0.093 0.046 0.046 0.000 0.000 0.000 0.278 ESE 0.000 0.000 0.093 0.139 0.325 0.603 0.371 0.093 0.000 1.624 SE 0.000 0.000 0.186 0.232 0.046 0.696 0.742 0.186 0.000 2.088 SSE 0.000 0.000 0.000 0.046 0.046 0.603 0.510 0.325 0.139 1.671 S 0.000 0.000 0.186 0.186 0.139 0.510 0.325 0.418 0.464 2.227 SSW 0.000 0.000 0.000 0.139 0.139 0.974 0.928 0.232 0.046 2.459 SW 0.000 0.046 0.232 0.139 0.139 0.418 0.139 0.046 0.000 1.160 WSW 0.000 0.000 0.464 0.325 0.093 0.974 0.603 0.046 0.000 2.506 W 0.000 0.000 0.139 0.371 0.186 0.603 1.160 0.093 0.000 2.552 WNW 0.000 0.000 0.093 0.278 0.371 1.114 1.439 1.253 0.046 4.594 NW 0.000 0.000 0.046 0.371 0.325 0.835 1.299 1.021 0.650 4.548 NNW 0.000 0.000 0.046 0.139 0.186 0.882 1.067 0.696 0.186 3.202 SUBTOTAL 0.000 0.139 1.903 2.970 2.599 11.137 11.879 5.151 1.531 37.309 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS D 804 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 804 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 12.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-141

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.742 1.392 0.093 0.000 2.227 NNE 0.000 0.000 0.093 0.000 0.139 1.206 1.392 0.000 0.000 2.831 NE 0.000 0.000 0.046 0.093 0.046 0.557 0.742 0.046 0.000 1.531 ENE 0.000 0.000 0.046 0.093 0.046 0.232 0.418 0.093 0.000 0.928 E 0.000 0.000 0.232 0.093 0.139 0.325 0.139 0.046 0.000 0.974 ESE 0.000 0.000 0.186 0.093 0.139 1.021 1.160 0.186 0.000 2.784 SE 0.000 0.000 0.046 0.325 0.046 1.299 1.485 0.974 0.093 4.269 SSE 0.000 0.000 0.000 0.046 0.093 1.346 1.671 1.346 0.418 4.919 S 0.000 0.000 0.093 0.046 0.371 1.160 1.903 2.135 1.578 7.285 SSW 0.000 0.000 0.046 0.046 0.093 1.021 2.552 2.088 0.232 6.079 SW 0.000 0.000 0.000 0.139 0.139 1.624 0.650 0.232 0.046 2.831 WSW 0.000 0.000 0.000 0.046 0.232 1.160 0.232 0.000 0.046 1.717 W 0.000 0.000 0.000 0.139 0.278 0.418 0.510 0.000 0.000 1.346 WNW 0.000 0.000 0.046 0.093 0.278 0.325 0.046 0.046 0.000 0.835 NW 0.000 0.000 0.046 0.093 0.093 0.510 0.650 0.139 0.000 1.531 NNW 0.000 0.000 0.046 0.046 0.000 0.510 0.789 0.232 0.046 1.671 SUBTOTAL 0.000 0.000 0.928 1.392 2.135 13.457 15.731 7.657 2.459 43.759 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS E 943 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 943 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 14.42 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-142

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.046 0.139 0.046 0.000 0.278 NNE 0.000 0.000 0.046 0.000 0.000 0.232 0.139 0.000 0.000 0.418 NE 0.000 0.000 0.000 0.000 0.000 0.139 0.093 0.000 0.000 0.232 ENE 0.000 0.000 0.046 0.139 0.186 0.186 0.000 0.046 0.000 0.603 E 0.000 0.000 0.093 0.000 0.046 0.278 0.093 0.000 0.000 0.510 ESE 0.000 0.000 0.000 0.046 0.046 0.371 0.232 0.000 0.000 0.696 SE 0.000 0.046 0.000 0.000 0.186 0.371 0.325 0.093 0.046 1.067 SSE 0.000 0.000 0.046 0.046 0.139 0.510 1.810 0.603 0.046 3.202 S 0.000 0.000 0.046 0.093 0.000 0.278 2.227 0.696 0.000 3.341 SSW 0.000 0.000 0.046 0.000 0.139 0.186 0.278 0.000 0.000 0.650 SW 0.000 0.000 0.000 0.046 0.093 0.278 0.278 0.046 0.000 0.742 WSW 0.000 0.000 0.046 0.046 0.046 0.093 0.000 0.000 0.000 0.232 W 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.186 WNW 0.000 0.046 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.139 NW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.093 0.000 0.000 0.000 0.139 0.000 0.000 0.232 SUBTOTAL 0.000 0.093 0.510 0.510 0.928 3.155 5.754 1.531 0.093 12.575 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS F 271 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 271 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 12.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-143

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.046 0.232 0.000 0.000 0.000 0.278 SSE 0.000 0.000 0.000 0.000 0.000 0.139 0.046 0.186 0.000 0.371 S 0.000 0.000 0.000 0.000 0.000 0.325 0.046 0.000 0.000 0.371 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.093 0.000 0.093 0.696 0.186 0.186 0.000 1.253 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS G 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 11.53 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-144

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES SECOND QUARTER E-145

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.047 0.140 S 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.140 0.000 0.000 0.047 0.187 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS A 4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 14.15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-146

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.047 0.140 SSE 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.047 0.000 0.187 S 0.000 0.000 0.000 0.047 0.047 0.000 0.094 0.047 0.000 0.234 SSW 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.047 0.000 0.140 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.140 0.000 0.000 0.140 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.140 0.187 0.187 0.234 0.140 0.047 0.936 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS B 21 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 20 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 12.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-147

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.187 0.047 0.000 0.234 NNE 0.000 0.000 0.000 0.000 0.047 0.047 0.140 0.140 0.000 0.374 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.187 SE 0.000 0.000 0.047 0.328 0.094 0.140 0.047 0.000 0.000 0.655 SSE 0.000 0.000 0.000 0.187 0.047 0.094 0.047 0.000 0.000 0.374 S 0.000 0.000 0.000 0.187 0.000 0.374 0.094 0.094 0.000 0.749 SSW 0.000 0.000 0.000 0.047 0.094 0.328 0.374 0.047 0.000 0.889 SW 0.000 0.000 0.047 0.094 0.000 0.094 0.047 0.000 0.140 0.421 WSW 0.000 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.000 0.140 W 0.000 0.000 0.000 0.000 0.000 0.094 0.187 0.094 0.000 0.374 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.234 0.140 0.000 0.421 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.140 NNW 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.094 SUBTOTAL 0.000 0.000 0.094 0.842 0.328 1.497 1.544 0.608 0.140 5.054 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS C 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 108 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 11.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-148

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.047 0.094 0.140 0.515 0.702 0.468 0.000 0.000 1.965 NNE 0.000 0.000 0.047 0.187 0.374 0.936 0.796 0.047 0.000 2.387 NE 0.000 0.000 0.047 0.000 0.140 0.374 0.328 0.140 0.000 1.029 ENE 0.000 0.094 0.000 0.047 0.140 0.140 0.047 0.000 0.000 0.468 E 0.000 0.000 0.047 0.000 0.187 0.094 0.000 0.000 0.000 0.328 ESE 0.000 0.000 0.094 0.374 0.374 0.608 0.094 0.140 0.000 1.685 SE 0.000 0.000 0.608 0.936 0.328 0.842 0.655 0.468 0.094 3.931 SSE 0.000 0.000 0.281 0.187 0.562 0.983 1.310 0.889 0.281 4.492 S 0.000 0.000 0.421 0.562 0.702 1.310 1.731 0.983 0.281 5.990 SSW 0.000 0.000 0.281 0.983 0.842 1.451 0.608 0.468 0.047 4.679 SW 0.000 0.000 0.281 0.562 0.562 1.778 0.468 0.094 0.094 3.837 WSW 0.000 0.000 0.562 0.936 0.889 1.263 0.328 0.140 0.140 4.258 W 0.000 0.000 0.187 0.796 0.796 1.965 1.076 0.328 0.796 5.943 WNW 0.000 0.000 0.000 0.374 0.702 1.076 0.749 0.421 0.328 3.650 NW 0.000 0.000 0.234 0.328 0.655 1.076 0.562 0.140 0.000 2.995 NNW 0.000 0.000 0.047 0.187 0.328 0.983 0.562 0.094 0.000 2.199 SUBTOTAL 0.000 0.140 3.229 6.598 8.095 15.583 9.780 4.352 2.059 49.836 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS D 1080 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1065 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 10.83 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-149

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.047 0.094 0.234 0.515 0.749 0.000 0.000 1.638 NNE 0.000 0.000 0.000 0.047 0.140 0.562 0.983 0.140 0.000 1.872 NE 0.000 0.047 0.047 0.234 0.187 0.562 0.421 0.000 0.000 1.497 ENE 0.000 0.000 0.047 0.234 0.187 0.140 0.000 0.000 0.000 0.608 E 0.000 0.000 0.140 0.140 0.187 0.234 0.000 0.000 0.000 0.702 ESE 0.000 0.000 0.094 0.094 0.000 0.702 0.187 0.140 0.000 1.217 SE 0.000 0.000 0.187 0.094 0.234 1.170 0.421 0.000 0.047 2.153 SSE 0.000 0.047 0.047 0.047 0.421 1.123 1.263 0.702 0.187 3.837 S 0.000 0.000 0.047 0.187 0.281 1.123 1.825 1.310 0.281 5.054 SSW 0.000 0.000 0.234 0.328 0.281 1.029 0.796 0.140 0.000 2.808 SW 0.000 0.047 0.187 0.421 0.421 1.544 0.468 0.094 0.000 3.182 WSW 0.000 0.000 0.140 0.187 0.421 0.749 0.234 0.000 0.000 1.731 W 0.000 0.047 0.140 0.234 0.140 0.562 0.187 0.000 0.000 1.310 WNW 0.000 0.000 0.094 0.047 0.234 0.281 0.187 0.000 0.000 0.842 NW 0.000 0.000 0.000 0.000 0.094 0.328 0.234 0.281 0.000 0.936 NNW 0.000 0.000 0.047 0.094 0.187 0.094 0.234 0.000 0.000 0.655 SUBTOTAL 0.000 0.187 1.497 2.480 3.650 10.716 8.189 2.808 0.515 30.042 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS E 653 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 642 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 11.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-150

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.094 0.047 0.000 0.140 0.187 0.000 0.000 0.468 NNE 0.000 0.000 0.047 0.140 0.094 0.234 0.468 0.047 0.000 1.029 NE 0.000 0.047 0.047 0.140 0.047 0.374 0.374 0.094 0.000 1.123 ENE 0.000 0.000 0.000 0.047 0.047 0.187 0.234 0.000 0.000 0.515 E 0.000 0.000 0.047 0.000 0.094 0.094 0.000 0.000 0.000 0.234 ESE 0.000 0.047 0.000 0.187 0.047 0.281 0.094 0.000 0.000 0.655 SE 0.000 0.000 0.047 0.047 0.047 0.094 0.234 0.000 0.000 0.468 SSE 0.000 0.000 0.047 0.047 0.000 0.562 0.421 0.000 0.000 1.076 S 0.000 0.000 0.047 0.140 0.000 0.234 1.029 0.374 0.000 1.825 SSW 0.000 0.000 0.000 0.000 0.047 0.234 0.515 0.000 0.000 0.796 SW 0.000 0.000 0.047 0.000 0.047 0.328 0.281 0.000 0.000 0.702 WSW 0.000 0.000 0.094 0.047 0.140 0.187 0.047 0.000 0.000 0.515 W 0.000 0.000 0.047 0.140 0.094 0.187 0.000 0.000 0.000 0.468 WNW 0.000 0.047 0.140 0.094 0.000 0.140 0.000 0.000 0.000 0.421 NW 0.000 0.000 0.047 0.140 0.000 0.000 0.047 0.000 0.000 0.234 NNW 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.094 0.000 0.187 SUBTOTAL 0.000 0.140 0.796 1.217 0.702 3.322 3.931 0.608 0.000 10.716 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS F 237 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 229 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 10.84 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-151

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.140 0.000 0.047 0.000 0.094 0.000 0.000 0.281 NNE 0.000 0.000 0.047 0.047 0.047 0.047 0.047 0.000 0.000 0.234 NE 0.000 0.000 0.047 0.000 0.000 0.000 0.047 0.000 0.000 0.094 ENE 0.000 0.094 0.047 0.094 0.047 0.094 0.140 0.000 0.000 0.515 E 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.094 0.094 0.187 0.094 0.000 0.000 0.000 0.468 SE 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.094 SSE 0.000 0.000 0.094 0.000 0.000 0.094 0.047 0.000 0.000 0.234 S 0.000 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.187 SSW 0.000 0.047 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.094 SW 0.000 0.000 0.047 0.140 0.094 0.047 0.000 0.000 0.000 0.328 WSW 0.000 0.047 0.094 0.000 0.047 0.000 0.000 0.000 0.000 0.187 W 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 WNW 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 NNW 0.000 0.000 0.140 0.094 0.000 0.000 0.047 0.000 0.000 0.281 SUBTOTAL 0.000 0.187 0.889 0.608 0.515 0.468 0.562 0.000 0.000 3.229 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS G 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 69 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 6.79 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-152

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES THIRD QUARTER E-153

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 SSE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.136 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 9.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-154

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.182 NNE 0.000 0.000 0.000 0.000 0.000 0.091 0.045 0.000 0.000 0.136 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.045 SE 0.000 0.000 0.000 0.000 0.045 0.136 0.000 0.000 0.000 0.182 SSE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.045 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SUBTOTAL 0.000 0.000 0.000 0.000 0.091 0.455 0.318 0.000 0.000 0.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS B 19 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 19 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 11.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-155

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.409 0.227 0.000 0.000 0.636 NNE 0.000 0.000 0.000 0.000 0.000 0.273 0.045 0.000 0.000 0.318 NE 0.000 0.000 0.000 0.000 0.000 0.364 0.000 0.000 0.000 0.364 ENE 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.091 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.091 0.045 0.045 0.000 0.182 SE 0.000 0.000 0.045 0.273 0.136 0.182 0.000 0.000 0.000 0.636 SSE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.045 0.000 0.182 0.045 0.000 0.000 0.273 SSW 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SW 0.000 0.000 0.000 0.045 0.000 0.091 0.091 0.000 0.000 0.227 WSW 0.000 0.000 0.000 0.045 0.182 0.227 0.000 0.000 0.000 0.455 W 0.000 0.000 0.000 0.000 0.045 0.182 0.182 0.000 0.000 0.409 WNW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.000 0.000 0.000 0.136 0.045 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.091 0.000 0.000 0.136 SUBTOTAL 0.000 0.000 0.045 0.409 0.455 2.318 0.818 0.045 0.000 4.091 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS C 90 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 90 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 10.10 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-156

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.182 0.182 0.909 0.682 0.182 0.045 2.318 NNE 0.000 0.000 0.136 0.136 0.182 1.273 0.727 0.136 0.000 2.591 NE 0.000 0.045 0.000 0.182 0.409 1.182 0.273 0.000 0.000 2.091 ENE 0.000 0.000 0.182 0.136 0.227 0.318 0.000 0.000 0.000 0.864 E 0.000 0.000 0.136 0.273 0.091 0.409 0.409 0.000 0.000 1.318 ESE 0.000 0.000 0.500 0.773 0.591 0.636 0.318 0.091 0.045 2.955 SE 0.000 0.045 0.955 1.273 0.727 0.545 0.364 0.409 0.000 4.318 SSE 0.000 0.000 0.773 0.636 0.273 0.273 0.182 0.045 0.045 2.227 S 0.000 0.000 0.727 0.682 0.500 0.818 1.727 0.091 0.318 4.864 SSW 0.000 0.000 0.773 1.318 0.909 1.227 0.636 0.045 0.045 4.955 SW 0.000 0.000 0.909 1.045 0.727 1.545 0.409 0.091 0.000 4.727 WSW 0.000 0.000 0.500 1.409 1.091 1.455 0.682 0.045 0.045 5.227 W 0.000 0.000 0.318 0.727 0.864 1.682 0.500 0.000 0.136 4.227 WNW 0.000 0.000 0.227 0.409 0.364 1.591 0.545 0.045 0.091 3.273 NW 0.000 0.000 0.091 0.182 0.364 0.682 0.136 0.182 0.000 1.636 NNW 0.000 0.000 0.091 0.136 0.182 0.318 0.136 0.000 0.000 0.864 SUBTOTAL 0.000 0.091 6.455 9.500 7.682 14.864 7.727 1.364 0.773 48.455 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS D 1066 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1066 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 8.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-157

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.045 0.045 0.045 0.182 0.727 0.818 0.136 0.182 2.182 NNE 0.000 0.000 0.000 0.091 0.091 0.955 1.455 0.500 0.000 3.091 NE 0.000 0.045 0.000 0.000 0.000 0.227 1.136 0.818 0.000 2.227 ENE 0.000 0.000 0.136 0.000 0.227 0.682 0.227 0.000 0.000 1.273 E 0.000 0.091 0.045 0.045 0.136 0.227 0.000 0.000 0.000 0.545 ESE 0.000 0.045 0.182 0.318 0.273 0.909 0.182 0.000 0.091 2.000 SE 0.000 0.045 0.227 0.500 0.955 0.955 0.045 0.045 0.045 2.818 SSE 0.000 0.000 0.091 0.136 0.682 0.273 0.273 0.045 0.045 1.545 S 0.000 0.045 0.227 0.545 0.636 0.773 0.227 0.000 0.000 2.455 SSW 0.000 0.000 0.136 0.273 0.318 1.000 0.273 0.000 0.000 2.000 SW 0.000 0.000 0.227 0.409 0.364 0.682 0.000 0.045 0.000 1.727 WSW 0.000 0.000 0.136 0.273 0.409 0.318 0.000 0.000 0.000 1.136 W 0.000 0.000 0.182 0.364 0.318 0.500 0.045 0.045 0.000 1.455 WNW 0.000 0.045 0.091 0.182 0.091 0.182 0.091 0.000 0.000 0.682 NW 0.000 0.000 0.000 0.182 0.000 0.182 0.045 0.000 0.000 0.409 NNW 0.000 0.000 0.136 0.091 0.182 0.273 0.045 0.000 0.000 0.727 SUBTOTAL 0.000 0.364 1.864 3.455 4.864 8.864 4.864 1.636 0.364 26.273 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS E 578 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 578 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 9.70 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-158

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.045 0.000 0.091 0.045 0.227 0.455 0.091 0.000 0.955 NNE 0.000 0.045 0.045 0.000 0.091 0.364 0.545 0.545 0.000 1.636 NE 0.000 0.000 0.136 0.045 0.091 0.455 0.818 0.273 0.000 1.818 ENE 0.000 0.000 0.136 0.045 0.091 0.955 0.682 0.000 0.000 1.909 E 0.000 0.000 0.227 0.227 0.273 0.545 0.045 0.000 0.000 1.318 ESE 0.000 0.000 0.136 0.318 0.318 1.000 0.273 0.000 0.000 2.045 SE 0.000 0.091 0.545 0.636 0.455 0.955 0.091 0.000 0.000 2.773 SSE 0.000 0.045 0.364 0.318 0.409 0.409 0.000 0.000 0.000 1.545 S 0.000 0.000 0.182 0.045 0.136 0.227 0.000 0.000 0.000 0.591 SSW 0.000 0.000 0.136 0.136 0.045 0.000 0.227 0.000 0.000 0.545 SW 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 WSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.045 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.136 WNW 0.000 0.045 0.136 0.091 0.045 0.000 0.000 0.000 0.000 0.318 NW 0.000 0.045 0.227 0.091 0.091 0.000 0.000 0.000 0.000 0.455 NNW 0.000 0.000 0.182 0.136 0.000 0.091 0.136 0.000 0.000 0.545 SUBTOTAL 0.000 0.500 2.545 2.227 2.136 5.227 3.273 0.909 0.000 16.818 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS F 370 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 370 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 8.80 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-159

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.045 0.000 0.000 0.091 0.045 0.000 0.182 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.227 0.091 0.000 0.318 NE 0.000 0.000 0.136 0.000 0.045 0.045 0.136 0.000 0.000 0.364 ENE 0.000 0.091 0.000 0.000 0.045 0.045 0.091 0.000 0.000 0.273 E 0.000 0.045 0.045 0.091 0.000 0.045 0.000 0.000 0.000 0.227 ESE 0.000 0.000 0.136 0.273 0.000 0.136 0.000 0.000 0.000 0.545 SE 0.000 0.000 0.091 0.136 0.091 0.045 0.000 0.000 0.000 0.364 SSE 0.000 0.045 0.136 0.091 0.045 0.000 0.000 0.000 0.000 0.318 S 0.000 0.045 0.045 0.091 0.045 0.000 0.000 0.000 0.000 0.227 SSW 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WNW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 NNW 0.000 0.045 0.045 0.045 0.000 0.000 0.136 0.000 0.000 0.273 SUBTOTAL 0.000 0.273 0.727 0.909 0.318 0.318 0.682 0.136 0.000 3.364 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS G 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 7.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-160

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FOURTH QUARTER E-161

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.139 SSE 0.000 0.000 0.000 0.000 0.046 0.139 0.046 0.139 0.000 0.369 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.046 0.185 0.231 0.185 0.000 0.646 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 14.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-162

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.277 0.046 0.000 0.323 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.139 SE 0.000 0.000 0.000 0.000 0.046 0.231 0.092 0.000 0.000 0.369 SSE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 S 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.139 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.139 0.416 0.462 0.139 0.000 1.154 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS B 25 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 25 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 13.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-163

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.323 0.462 0.000 0.000 0.785 NNE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.046 0.000 0.185 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.185 0.092 0.231 0.092 0.000 0.646 SE 0.000 0.000 0.000 0.046 0.000 0.231 0.092 0.000 0.046 0.416 SSE 0.000 0.000 0.000 0.092 0.000 0.046 0.139 0.046 0.000 0.323 S 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.185 SW 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.139 WSW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 W 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 SUBTOTAL 0.000 0.000 0.000 0.185 0.231 1.200 1.200 0.185 0.046 3.047 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS C 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 12.33 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-164

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.139 0.369 2.447 2.447 0.139 0.000 5.633 NNE 0.000 0.000 0.185 0.323 0.508 0.877 0.508 0.046 0.000 2.447 NE 0.000 0.000 0.139 0.092 0.369 0.646 0.000 0.000 0.000 1.247 ENE 0.000 0.000 0.046 0.139 0.092 0.185 0.000 0.139 0.000 0.600 E 0.000 0.000 0.000 0.046 0.046 0.000 0.046 0.139 0.000 0.277 ESE 0.000 0.000 0.369 0.323 0.600 0.369 0.369 0.323 0.000 2.355 SE 0.000 0.000 0.092 0.600 0.369 0.785 0.923 0.646 0.369 3.786 SSE 0.000 0.046 0.323 0.508 0.369 0.508 1.200 0.508 0.231 3.693 S 0.000 0.000 0.277 0.092 0.139 0.462 0.600 0.323 0.231 2.124 SSW 0.000 0.000 0.369 0.323 0.185 0.139 0.231 0.231 0.046 1.524 SW 0.000 0.000 0.231 0.231 0.323 0.323 0.185 0.000 0.000 1.293 WSW 0.000 0.000 0.277 0.185 0.600 0.739 0.185 0.000 0.000 1.985 W 0.000 0.000 0.323 0.554 0.369 1.200 0.831 0.508 0.046 3.832 WNW 0.000 0.046 0.046 0.139 0.508 0.785 0.785 0.277 0.231 2.816 NW 0.000 0.046 0.185 0.092 0.369 0.739 1.339 0.831 0.139 3.740 NNW 0.000 0.000 0.092 0.046 0.092 1.477 1.939 0.277 0.000 3.924 SUBTOTAL 0.000 0.139 3.047 3.832 5.309 11.681 11.588 4.386 1.293 41.274 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS D 913 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 894 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 11.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-165

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.000 0.046 0.831 0.970 0.185 0.000 2.124 NNE 0.000 0.000 0.000 0.092 0.000 0.923 1.016 0.000 0.000 2.031 NE 0.000 0.000 0.092 0.046 0.046 0.877 0.369 0.000 0.000 1.431 ENE 0.000 0.000 0.139 0.092 0.185 0.139 0.046 0.000 0.000 0.600 E 0.000 0.092 0.046 0.046 0.185 0.092 0.092 0.000 0.000 0.554 ESE 0.000 0.046 0.000 0.231 0.092 0.462 1.616 0.139 0.000 2.585 SE 0.000 0.000 0.231 0.185 0.139 1.016 1.985 0.554 0.092 4.201 SSE 0.000 0.000 0.092 0.092 0.185 1.247 1.801 1.108 0.046 4.571 S 0.000 0.000 0.092 0.231 0.462 1.431 1.754 0.877 0.416 5.263 SSW 0.000 0.000 0.139 0.231 0.462 0.970 0.970 0.185 0.508 3.463 SW 0.000 0.000 0.046 0.554 0.462 1.247 0.139 0.000 0.046 2.493 WSW 0.000 0.000 0.092 0.139 0.277 0.646 0.185 0.046 0.000 1.385 W 0.000 0.000 0.092 0.046 0.046 0.462 0.277 0.000 0.000 0.923 WNW 0.000 0.046 0.046 0.092 0.046 0.323 0.231 0.000 0.000 0.785 NW 0.000 0.000 0.046 0.092 0.139 0.323 0.970 0.139 0.000 1.708 NNW 0.000 0.000 0.092 0.092 0.231 0.600 0.369 0.000 0.000 1.385 SUBTOTAL 0.000 0.185 1.339 2.262 3.001 11.588 12.789 3.232 1.108 35.503 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS E 781 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 769 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 12.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-166

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.277 1.247 0.092 0.000 1.616 NNE 0.000 0.000 0.092 0.000 0.000 0.092 0.646 0.092 0.000 0.923 NE 0.000 0.000 0.046 0.046 0.092 0.046 0.323 0.000 0.000 0.554 ENE 0.000 0.000 0.000 0.046 0.046 0.185 0.139 0.046 0.000 0.462 E 0.000 0.000 0.000 0.046 0.046 0.139 0.139 0.000 0.000 0.369 ESE 0.000 0.000 0.046 0.092 0.092 0.831 0.462 0.000 0.000 1.524 SE 0.000 0.000 0.046 0.092 0.139 1.293 0.739 0.046 0.000 2.355 SSE 0.000 0.000 0.046 0.139 0.092 0.877 0.462 0.000 0.000 1.616 S 0.000 0.000 0.092 0.046 0.185 0.231 0.277 0.092 0.000 0.923 SSW 0.000 0.000 0.000 0.139 0.046 0.139 0.231 0.000 0.000 0.554 SW 0.000 0.046 0.000 0.000 0.231 0.185 0.046 0.000 0.000 0.508 WSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.046 0.000 0.046 0.139 0.000 0.000 0.000 0.231 WNW 0.000 0.000 0.046 0.092 0.092 0.092 0.000 0.000 0.000 0.323 NW 0.000 0.000 0.000 0.000 0.092 0.277 0.046 0.000 0.000 0.416 NNW 0.000 0.000 0.046 0.000 0.000 0.369 0.323 0.046 0.000 0.785 SUBTOTAL 0.000 0.046 0.508 0.785 1.200 5.171 5.078 0.416 0.000 13.204 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS F 286 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 286 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 11.45 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-167

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.139 0.000 0.092 0.092 0.046 0.000 0.416 NNE 0.000 0.000 0.092 0.139 0.000 0.185 0.046 0.000 0.000 0.462 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.046 0.139 0.046 0.185 0.000 0.000 0.416 E 0.000 0.000 0.000 0.092 0.000 0.092 0.000 0.000 0.000 0.185 ESE 0.000 0.000 0.000 0.092 0.277 0.323 0.000 0.000 0.000 0.693 SE 0.000 0.000 0.139 0.185 0.508 0.554 0.185 0.000 0.000 1.570 SSE 0.000 0.000 0.046 0.046 0.092 0.277 0.000 0.000 0.000 0.462 S 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.092 0.139 0.139 0.092 0.139 0.046 0.000 0.646 SUBTOTAL 0.000 0.000 0.416 0.923 1.200 1.801 0.739 0.092 0.000 5.171 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 8.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-168

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT ATTACHMENT 1 Deviations from ODCM Controls and Surveillance Requirements This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (ODCM). The ODCM requires that all deviations be reported in the Annual Radioactive Effluent Release Report.

During the reporting period, January 1, 2017 through December 31, 2017, there were no deviations to the ODCM.

E-169

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Attachment 2 2017 Inoperable Radiological Effluent Instrumentation Report This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (ODCM) Sections 1/2.1.1 and 1/2.1.2. The ODCM requires the exertion of best efforts to return inoperable instruments to operable status within 30 days. Failure to return such instruments to an operable status within the prescribed interval requires a description in the Annual Radioactive Effluent Release Report.

During the reporting period, January 1, 2017 through December 31, 2017, there were three radiological instruments inoperable for greater than 30 days.

The 0-FIC-77-60 Radwaste Discharge Valve Flow Loop was declared inoperable on 4/6/2017 during performance of 0-SI-4.8.A.1-1, Liquid Effluent Permit (CR 1281231, WO 118631674, LCOT# 0-077-ODCM-2017-0016). The 0-FIC-77-60 average flow rate was out of tolerance as per the Acceptance Criteria and calculations in 0-SI-4.8.A.1-1. The expected percent tolerance is +/- 8%, whereas the value determined as a result of the SI performance was 34% due to the average flow rate being outside the plus or minus 8% of flow rate calculated based on tank volume change over time (ODCM Table 2.1-1.d Channel Functional Test). Monitor declared operable per LCOT logs on 7/14/2017 (WO 118114405).

The 2-FCV-77-61 Radwaste Discharge Valve Flow Loop was declared inoperable on 7/14/2016 under LCOT# 2-077-ODCM-2016-0020. 2-SI-4.8.A.3, Automatic Isolation Logic Functional Test of Radwaste Discharge Valve, was not performed as scheduled because U-2 was on cooling towers. (CR 1190109)

On 11/14/2016, only partial performance with Attachment 3 of 2-SI-4.8.A.3 to be performed at a later date (WO 116798018, 118410520).

On 12/29/16,determination made that work could not be completed as scheduled due to on-going Radwaste upgrades. Performance of Attachment 3 and any other necessary sections of 2-SI-4.8.A.3 will be scheduled following completion of Radwaste upgrades (WO 118315571).

The 2-FCV-7761 Radwaste Discharge Valve Flow Loop still remains inoperable; this inoperability also places the 0-RM-90-130 (Liquid RW Effluent monitor) in a potential LCO if a liquid release is made through the U-2 CCW discharge canal . Per ODCM, A system, subsystem, train, component, or device shall be Operable or have Operability when it is capable of performing its specified function(s).

The 3-FCV-77-61 Radwaste Discharge Valve was declared inoperable on 6/18/2013 under LCOT# 3-77-ODCM-2013-0022 due to failed A/C steps during the performance of 3-SI-4.8.A.3,Automatic Isolation Logic Functional Test of Radwaste Discharge Canal Valve 3-FCV-77-61 (CR 946463 and WO 116248474).

The 3-FCV-7761 Radwaste Discharge Valve Flow Loop still remains inoperable; this inoperability also places the 0-RM-90-130 (Liquid RW Effluent monitor) in a potential LCO if a liquid release is made through the U-3 CCW discharge canal . Per ODCM, A system, subsystem, train, component, or device shall be Operable or have Operability when it is capable of performing its specified function(s).

E-170

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Groundwater Protection Program In 2007, the Nuclear Energy Institute (NEI) established the Groundwater Protection Initiative (GPI), NEI 07-07. The Groundwater Protection Initiative was established to 1) improve management of situations involving inadvertent radiological releases that get into groundwater and 2) to improve communication with external stakeholders to enhance trust and confidence on the part of local communities, States, the NRC, and the public in the nuclear industrys commitment to a high standard of public radiation safety and protection of the environment.

This section provides information and sample results from on-site groundwater locations that were sampled in support of the Groundwater Protection Initiative at Browns Ferry Nuclear Plant.

The groundwater wells described in this section are not part of the Radiological Environmental Monitoring Program (REMP).

In the early 2000s, BFN initiated a groundwater study to identify the source low levels of tritium detected on-site. Results from the groundwater study (Investigation of Tritium Releases to Groundwater Prepared by H. Julian June 2006), suggest the source of tritiated groundwater was from historical leaks and spills associated with Radwaste/Condensate transfer tunnel.

Groundwater and surface water level measurements during the study indicated the return channel and subsequently the Tennessee River will ultimately be recipient to tritiated groundwater discharge from the site. It has been determined that there are no groundwater wells onsite or within 2-miles of the site that are used as a source of drinking water.

Groundwater movement in the area has been determined to be from the plant site toward the Tennessee River.

Onsite groundwater monitoring was performed in 2017. The purpose of on-site groundwater monitoring is to ensure timely detection of inadvertent radiological releases to groundwater.

Non REMP groundwater wells monitor for potential leaks from plant equipment. As part of the GPI, BFN monitored a total of 16 groundwater wells located in the Protected Area and the Owner Controlled Area during 2017. Normal sampling frequencies are quarterly and semiannually with some wells sampled monthly if certain criteria are met or for investigation purposes. Samples are routinely analyzed for environmental level tritium (H-3) and principle gamma emitters (PGE) with selected wells analyzed for Hard-to-Detect (HTD) radionuclides (Gross Alpha, Fe-55, Ni-63, Sr-89, and Sr-90). In support of the groundwater program the site also monitors onsite storm drains, catch basins and surface water.

In 2017, low levels of tritium were detected in on-site groundwater wells as indicated in Table 10, Groundwater Data. This table demonstrates all on-site groundwater wells that indicated detectable tritium concentrations. Tritium concentrations ranged from non-detectable, at less than 270 pCi/L, up to a maximum concentration of 6,856 pCi/L. No other plant related radionuclides were detected in any groundwater well; No activity was detected in any surface water, catch basin, or storm drain in 2017. As determined in the 2006 Groundwater study, the estimated groundwater/channel water dilution ratio is 1:20,000 at a rate of approximately 0.5 gpm. Using the highest measured groundwater tritium concentration in 2017, 6,856 pCi/L, the aqueous tritium concentration in the channel, after dilution, would be 0.34 pCi/L. Assuming 0.34 pCi/L concentration at a release rate of 0.5 gpm for the entire year results in a total release of approximately 3.41E-07 Curies. This is a small fraction of the liquid radwaste releases and is a small fraction of the reported dose for 2017.

E-171

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Groundwater Protection Program There were no instances of any on-site spills or leaks that occurred during the reporting period that were communicated to offsite agencies. Groundwater well results were well below the voluntary communication reporting level of 20,000 pCi/L as established by the EPA Drinking Water Standard.

Table 10 - Groundwater Data Tritium Activity Sample Date Well ID (pCi/L) 1st Quarter 1/31/2017 Dewat-A 2,422 2/23/2017 Dewat-A 6,856 3/17/2017 Dewat-A 3,824 2/22/2017 MW-01 2,985 3/24/2017 MW-01 1,961 2/21/2017 MW-02 1,214 2/21/2017 MW-03 626 2/21/2017 MW-04 920 2/21/2017 MW-07 803 2/22/2017 MW-08 2,070 3/17/2017 MW-08 3,493 2/22/2017 MW-09 255 2nd Quarter 4/13/2017 Dewat-A 2,316 5/11/2017 Dewat-A 5,280 5/11/2017 MW-01 883 5/11/2017 MW-02 620 5/11/2017 MW-03 500 5/11/2017 MW-04 689 5/11/2017 MW-07 735 5/11/2017 MW-08 2,700 3rd Quarter 8/1/2017 Dewat-A 3,010 8/1/2017 MW-02 277 8/1/2017 MW-03 402 8/1/2017 MW-07 753 8/1/2017 MW-08 2,240 4th Quarter 11/15/2017 Dewat-A 1,460 11/15/2017 MW-01 1,050 11/15/2017 MW-02 427 11/15/2017 MW-03 400 11/15/2017 MW-04 236 11/14/2017 MW-07 1,350 11/16/2017 MW-08 1,350 E-172

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 April 30, 2018 10 CFR 50.4 10 CFR 50.36a 10 CFR 50 Appendix I A TIN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Units 1, 2, and 3 Renewed Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296

Subject:

2017 Annual Radioactive Effluent Release Report In accordance with the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3, Technical Specifications Section 5.6.3, the Tennessee Valley Authority is submitting the BFN Annual Radioactive Effluent Release Report for the period January through December 2017. This document is in conformance with Title 10 of the Code of Federal Regulations (10 CFR) 50.36a and 10 CFR 50, Appendix I, Section IV. B.1. to Enclosure 1 documents deviations which have occurred from Offsite Dose Calculation Manual (ODCM) controls and surveillance requirements. Attachment 2 to provides information on radiological effluent instrumentation inoperable for greater than 30 days.

There are no new regulatory commitments contained in this letter. Should you have any questions concerning this submittal, please contact Jamie Paul, Site Licensing Manager, at (256) 729-7533.

R(\~

D. L. Hughes Site Vice President

U.S. Nuclear Regulatory Commission Page 2 April 30, 2018

Enclosure:

2017 Annual Radioactive Effluent Release Report cc (w/ Enclosure):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant NRC Project Manager - Browns Ferry Nuclear Plant

ENCLOSURE Browns Ferry Nuclear Plant Units 1, 2, and 3 2017 Annual Radioactive Effluent Release Report See Enclosed

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT TABLE OF CONTENTS Section Title Page Number Supplemental Information E-3 E-8 Gaseous Effluents E-9 E-16 Liquid Effluents E-17 E-19 Solid Waste E-20 E-27 Radiological Impact E-28 E-44 Meteorological Data E-45 E-168 - Deviations from ODCM Controls and Surveillance Requirements E-169 - Inoperable Radiological Effluent Instrumentation Report E-170 Groundwater Protection Program E-171 E-172 Tables Page Number Table 1A, Gaseous Effluents - Summation of All Releases E-9 Table 1B, Gaseous Effluents - Elevated Releases E-10 E-11 Table 1C, Gaseous Effluents - Ground Level Releases E-12 E-13 Table 1D, Gaseous Effluents - Mixed Mode Releases E-14 E-16 Table 2A, Liquid Effluents - Summation of All Releases E-17 Table 2B, Liquid Effluents E-18 E-19 Table 3, Solid Waste and Irradiated Fuel Shipments E-20 E-27 Table 4, Radiological Impact, Doses from Airborne Effluents E-35 E-38 Table 5, Radiological Impact, Doses from Liquid Effluents E-39 E-42 Table 5A, Radiological Impact, Total Doses from I-131 E-43 Water Ingestion Pathway Table 6, Radiological Impact, Total Dose from Fuel Cycle E-44 Table 7A, Meteorological Data, Joint Frequency Distribution E-45 E-52 Ground Level Releases, First Quarter E-1

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT TABLE OF CONTENTS Tables Page Number Table 7B, Meteorological Data, Joint Frequency Distribution E-53 E-60 Ground Level Releases, Second Quarter Table 7C, Meteorological Data, Joint Frequency Distribution E-61 E-68 Ground Level Releases, Third Quarter Table 7D, Meteorological Data, Joint Frequency Distribution E-69 E-76 Ground Level Releases, Fourth Quarter Table 8A, Meteorological Data, Joint Frequency Distribution E-77 E-91 Split Level Releases, First Quarter Table 8B, Meteorological Data, Joint Frequency Distribution E-92 E-106 Split Level Releases, Second Quarter Table 8C, Meteorological Data, Joint Frequency Distribution E-107 E-121 Split Level Releases, Third Quarter Table 8D. Meteorological Data, Joint Frequency Distribution E-122 E-136 Split Level Releases, Fourth Quarter Table 9A, Meteorological Data, Joint Frequency Distribution E-137 E-144 Elevated Releases, First Quarter Table 9B, Meteorological Data, Joint Frequency Distribution E-145 E-152 Elevated Level Releases, Second Quarter Table 9C, Meteorological Data, Joint Frequency Distribution E-153 E-160 Elevated Level Releases, Third Quarter Table 9D, Meteorological Data, Joint Frequency Distribution E-161 E-168 Elevated Level Releases, Fourth Quarter Table 10, Groundwater Data E-172 E-2

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

1. Regulatory and BFN ODCM Limits
a. Fission and Activation Gases in Gaseous Effluent:

The release of fission and activation gases is regulated by the dose limits of Title 10 of the Code of Federal Regulations (10 CFR) 50 Appendix I and Browns Ferry Nuclear Plant (BFN) Offsite Dose Calculation Manual (ODCM). The air dose to areas at and beyond the site boundary due to noble gases released in gaseous effluents per unit shall be limited during any calendar quarter to 5 millirad (mrad) for gamma radiation and 10 mrad for beta radiation; and during any calendar year to 10 mrad for gamma radiation and 20 mrad for beta radiation.

b. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents:

The release of iodines and particulates in gaseous effluent is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluent released per unit to areas at and beyond the site boundary shall be limited to any organ during any calendar quarter to 7.5 millirem (mrem), and during any calendar year to 15 mrem.

c. Liquid Effluents:

The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. The doses or dose commitment to a member of the public from radioactive materials in liquid effluents released from each unit to unrestricted areas shall be limited during any calendar quarter to 1.5 mrem to the total body and 5 mrem to any organ and during any calendar year to 3 mrem to the total body and 10 mrem to any organ.

2. Limitation on Dose Rate
a. Fission and Activation Gases in Gaseous Effluent:
1. The instantaneous release rate of fission and activation gases is based on the dose rate limits of 10 CFR 20.1301 and the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary due to noble gases released in gaseous effluents from the site shall be limited to 500 mrem per year to the total body and 3000 mrem per year to the skin.
2. The BFN ODCM Section 7.2 determines the maximum noble gas release rate.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

2. Limitation on Dose Rate (Continued)
b. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents:
1. The instantaneous release rate of particulates and iodines is regulated by the dose rate limits of the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary, due to I-131, I-133, H-3, and particulates with half-lives greater than eight days in gaseous effluent released from the site, shall be limited to 1500 mrem per year to any organ.
2. The BFN ODCM Section 7.3 determines the maximum particulate and iodine dose rates.
c. Liquid Effluents:
1. The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20.1001-20.2402, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases
2. For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 µCi per milliliter (ml) total activity.
3. Average Energy The BFN ODCM limits the dose equivalent rates due to the release of noble gases to less than or equal to 500 mrem/year to the total body and less than or equal to 3000 mrem/year to the skin. The use of dose rate is in accordance with NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants.

Since the release rate is not used for effluent control, the average beta and gamma energies (E) for gaseous effluents discussed in Regulatory Guide 1.21, Measuring, Evaluation, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants, are not applicable and not included in this report.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

4. Measurements and Approximations of Total Radioactivity
a. Fission and activation gases:
1. Noble gases in the building vent and stack (elevated) gaseous effluents are continuously monitored. The flow rate of the stack is continuously monitored and the building vent effluent flow rates are calculated once a shift based on the configuration of operating exhaust fans. The vent flow is calculated for each release. Gas grab samples of the stack are taken and analyzed weekly. Gas grab samples of in-service vents are taken and analyzed monthly. The specific noble gas activity concentrations and total volume of the gases are used to calculate the total Curies of noble gases released.
2. The tritium concentration is determined by the analysis of a monthly grab sample for each release point.
b. Iodines and Particulates:
1. Iodines and particulates are continuously sampled on impregnated charcoal filters and particulate filters, respectively. The charcoal and particulate samples are replaced at least weekly and analyzed to determine specific activity concentrations. The specific activity concentrations and vent flow rate data are used weekly to verify that release rate limits were not exceeded. The specific activity concentrations and total volume of gaseous effluent are used on a monthly basis to determine the total curies of each particulate and iodine released during the month.
2. The gross alpha concentration is determined by analysis of a monthly particulate filter composite sample, and strontium-89 and strontium-90 are determined by analysis of a quarterly particulate filter composite sample for each release point.
c. Liquid effluents:
1. The gamma ray emitting radionuclide concentrations are determined for each batch by gamma ray spectroscopy analysis of a grab sample. The allowable release rate is calculated for each batch based upon the known dilution flow.

The flow rate of the liquid effluent is continuously monitored and the total volume released in each batch is determined. The total gamma activity released in each batch is determined by multiplying the radionuclide concentrations by the total volume discharged. The total gamma activity released during the month is then determined by summing the gamma activity content of each batch discharged during the month.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

4. Measurements and Approximations of Total Radioactivity (Continued)
c. Liquid effluents (Continued):
2. The gross alpha and tritium concentrations are measured on a monthly composite sample. The strontium-89, strontium-90, and iron-55 are measured on a quarterly composite sample.
d. The Radioactive Gaseous and Liquid Waste Monitoring Sampling and Analysis Program is specified in ODCM Sections 1/2.2.1 and 1/2.2.2. No liquid or gaseous concentration or dose limits were exceeded.
5. Batch Releases Quarter Quarter Quarter Quarter A. Liquid Units 1 2 3 4
1. Number of batches released Each 2 1 0 5
2. Total time for batches released Minutes 780.00 180.00 0 2057.00
3. Maximum time period for a batch release Minutes 420.00 180.00 0 505.00
4. Average time period for a batch release Minutes 390.00 180.00 0 411.40
5. Minimum time period for a batch release Minutes 360.00 180.00 0 295.00
6. Average BFN beach flow during period of ft3/sec 44,432 50,741 36,086 39,131 release into the river stream B. Gaseous None E-6

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information

6. Abnormal Releases
a. Liquid
1. Number of releases: 5
2. Total activity released (Curies):

Destination Nuclide Quarter 1 Quarter 2 Quarter 3 Quarter 4 Leak to River H-3 5.86E-02 4.79E-02 4.72E-02 2.33E-01 F-18 3.615E-06 2.64E-05 Na-24 1.454E-06 Mn-54 1.726E-07 Mn-56 6.662E-07 Co-58 4.145E-07 Co-60 1.200E-06 Zn-65 4.221E-07 Zn-69m 2.782E-07 As-76 4.183E-07 Nb-97 5.356E-08 I-134 2.214E-07 Xe-133 3.634E-07 Xe-135 3.066E-06

b. Gaseous
1. Number of releases: 0
6. Abnormal Releases (Continued)

Summary of Abnormal/Unplanned Releases The release of radioactive material to the environment from BFN has been a small fraction of the 10 CFR 20 Appendix B and 10 CFR 50 Appendix I limits. There were no limits exceeded as specified in 10 CFR 20 Appendix B and 10 CFR 50 Appendix I.

E-7

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Supplemental Information Five abnormal liquid releases occurred in 2017.

1. Three of the abnormal releases were from the U-1, U-2, and U-3 Station Sumps.

These releases occurred throughout 2017 and were the result of several identified sources including multiple steam leaks which occurred in the Steam Jet Air Ejector Rooms and Moisture Separator Rooms. (CRs 1256412, 1251481, 1249698, 1251479, 1256409, 1253461, 1282946, 1308933).

2. Leak from Condensate Head Tank valve 0-RTV-002-0738 (CR 1293308, 1292452) On 5/5/2017, Valve 0-RFV-002-0738, VAC Relief VLV CNDS HEAD TANK, stuck open and drained Condensate water onto Refuel Floor and scattered water onto duct work overhead and down the wall. The leak exited the Reactor Building and drained into U-1 Air Intake Plenum which drains to the Intake Channel. The estimated total water that leaked outside to the environment was less than 50 gallons.
3. Auxiliary Boiler C Feedwater was sampled on 1/28/17. The tritium analysis was greater than the Lower Limit of Detection(LLD). A resample confirmed the original result. Auxiliary Boilers drain to the U-1 Station Sump (CR 1255845).
7. Missed Compensatory Samples During the reporting period , January 1, 2017 through December 31, 2017, there were no missed compensatory samples.
8. Changes to the Radwaste System and Changes to the Process Control Program In calendar year 2017, BFN had one permanent change to the Radwaste System and no permanent change to the Process Control Program.

In 2017, BFN began a Radwaste Upgrade project to replace the Thermex System with Avantec Ultrex System. Under the project, BFN removed Floor Drain Sample Tank (FDST) A-2 and equalizing header under DCN 71436.

9. Revisions to the Offsite Dose Calculation Manual (ODCM)

During 2017 there were no revisions made to the Offsite Dose Calculation Manual (ODCM).

E-8

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS TABLE 1A Page 1 of 1 Gaseous Effluents - Summation of All Releases Error Units Quarter 1 Quarter 2 Quarter 3 Quarter 4  %

A. Fission and Activation Gases

1. Total Releases Curies ** ** ** ** 45
2. Average Release Rate for Period µCi/sec ** ** ** **
3. Percent of Applicable Limit  % **** **** **** ****

B. Iodines

1. Total Iodine-131 Curies 2.276E-04 4.251E-04 5.284E-04 5.721E-04 36
2. Average Release Rate for Period µCi/sec 2.927E-05 5.407E-05 6.648E-05 7.197E-05
3. Percent of Applicable Limit  % **** **** **** ****

C. Particulates

1. Particulates with half-lives

> eight days Curies 6.746E-04 1.207E-04 8.591E-04 7.112E-04 35

2. Average Release Rate for Period µCi/sec 8.676E-05 1.535E-05 1.081E-04 8.947E-05
3. Percent of Applicable Limit  % **** **** **** ****
4. Gross Alpha Radioactivity Curies ** 7.769E-06 ** **

D. Tritium

1. Total Release Curies 8.302E+01 6.655E+01 1.923E+02 1.235E+02 21
2. Average Release Rate for Period µCi/sec 1.068E+01 8.464E+00 2.419E+01 1.553E+01
3. Percent of Applicable Limit  % **** **** **** ****

E. Carbon-14***

1. Total Release Curies 7.638 9.994 10.139 10.195
2. Total as CO2 Curies 7.256 9.495 9.632 9.685
  • - Includes Activity from Abnormal Release
    • - Not Detected.
      • - Estimated using EPRI methodology provided in EPRI Report 1021106.
        • - Applicable Limits are expressed in terms of dose. See Radiological Impact Section.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1B Page 1 of 2 Gaseous Effluents - Elevated Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 7.40E-05 8.12E-05 8.66E-05 5.06E-05 I-133 2.25E-04 2.98E-04 3.66E-04 1.99E-04 I-135 ** ** ** **

Total for Period 2.99E-04 3.80E-04 4.53E-04 2.49E-04

    • - Not Detected.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1B (Continued)

Page 2 of 2 Gaseous Effluents - Elevated Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Sr-89 1.59E-05 1.43E-05 2.53E-05 1.26E-05 Sr-90 ** ** ** **

Cs-134 ** ** ** **

Cs-137 ** ** ** **

Cs-138 3.07E-03 1.44E-02 1.26E-02 2.12E-02 Ba-140 1.67E-06 6.29E-06 7.64E-06 1.10E-05 La-140 ** 1.78E-06 1.15E-06 5.89E-06 Y-91m 8.24E-05 7.80E-05 1.18E-04 1.42E-04 Co-60 3.44E-05 1.59E-06 ** **

Ba-139 1.28E-02 2.21E-02 1.95E-02 2.57E-02 Co-58 5.79E-06 ** **

Cr-51 2.07E-05 ** **

Mn-54 3.20E-06 ** **

Au-199 5.09E-05 2.04E-05 1.57E-05 1.63E-04 Total for Period* 1.61E-02 3.67E-02 3.22E-02 4.72E-02

4. Tritium 1.94E+00 3.18E+00 9.98E+00 4.89E+00
5. Carbon-14*** 7.256 9.495 9.632 9.685
  • - Includes all nuclides, even those with less than an eight day half-life.
    • - Not Detected.
      • - Estimated using EPRI methodology provided in EPRI Report 1021106.

E-11

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1C Page 1 of 2 Gaseous Effluents - Ground Level Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 2.17E-05 3.35E-05 1.70E-05 7.44E-05 I-133 7.62E-05 1.23E-04 1.10E-04 3.59E-04 I-135 ** ** ** **

Total for Period 9.79E-05 1.56E-04 1.27E-04 4.34E-04

    • - Not Detected.

E-12

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1C (Continued)

Page 2 of 2 Gaseous Effluents - Ground Level Releases CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Sr-89 ** ** ** **

Sr-90 ** ** ** **

Cs-134 ** ** ** **

Cs-137 ** ** ** **

Ba-140 ** ** ** **

La-140 ** ** ** **

Co-60 8.13E-06 ** 1.18E-05 6.14E-06 Co-58 ** ** ** 5.70E-06 Y-91m ** ** ** 1.55E-05 Ba-139 6.71E-04 ** ** **

Total for Period* 6.79E-04 ** 1.25E-05 2.73E-05 Gross Alpha ** 5.16E-06 ** **

Tritium 3.29E+01 5.52E+00 1.91E+01 2.26E+01

  • - Include all nuclides even those with less than an eight day half-life.
    • - Not Detected.

E-13

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D Page 1 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Others (specify) ** ** ** **

Total for Period ** ** ** **

2. Iodines I-131 1.32E-04 3.10E-04 4.25E-04 4.47E-04 I-133 1.26E-03 1.89E-03 3.06E-03 3.24E-03 I-135 ** ** ** **

Total for Period 1.39E-03 2.20E-03 3.49E-03 3.68E-03

  • - The Reactor Building and Radwaste Building are treated as split-level releases.
    • - Not Detected.

E-14

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D (Continued)

Page 2 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates***

Sr-89 ** ** ** **

Sr-90 Cs-134 ** ** ** **

Cs-137 3.77E-06 2.93E-06 ** **

Ba-140 ** ** 6.99E-06 6.33E-05 La-140 ** ** ** 3.48E-05 Ag-110m 9.49E-06 ** ** 8.65E-05 Na-24 ** 5.12E-05 1.12E-03 8.24E-04 Mn-54 1.59E-05 1.16E-06 1.37E-04 3.54E-05 Cr-51 9.22E-05 ** 1.42E-05 **

Co-58 1.11E-05 ** 1.63E-04 5.69E-05 Co-60 3.82E-04 7.41E-05 3.94E-04 1.75E-04 Zn-65 1.54E-05 ** 8.18E-05 9.48E-05 Y-91m 2.71E-04 3.87E-04 5.68E-04 1.37E-03 Sr-91 ** ** 1.50E-04 4.11E-04 Sr-92 ** ** ** 3.55E-04 Ba-139 5.47E-03 6.04E-03 6.85E-03 2.17E-02 Au-199 4.44E-06 ** ** **

E-15

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT GASEOUS EFFLUENTS (Continuous Mode Only)

TABLE 1D (Continued)

Page 3 of 3 Gaseous Effluents - Mixed Mode Releases*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates***

Tc-99m ** ** ** 2.53E-06 Mo-99 ** ** ** 2.59E-06 Total for Period*** 6.27E-03 6.56E-03 9.49E-03 2.52E-02 Gross Alpha ** 2.61E-06 ** **

Tritium 4.82E+01 5.79E+01 1.63E+02 9.60E+01

  • - The Reactor Building and Radwaste Building are treated as split-level releases.
    • - Not Detected.
      • - Includes all nuclides, even those with less than an eight day half-life.

E-16

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2A Page 1 of 1 Liquid Effluents - Summation of All Releases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

A. Fission and Activation Products (Does not include tritium, gases, alpha)

1. Total Release Curies 2.343E-03 1.22E-03**
  • 2.56E-04** 9 Average Diluted Concentration
2. Released During the Period µCi/ml 1.322E-09 2.98E-09**
  • 5.86E-011**
3. Percent of Applicable Limit  % *** *** *** ***

B. Tritium

1. Total Releases Curies 9.78E-01** 1.05E-01** 4.72E-02** 4.40E+00** 6 Average Diluted Concentration
2. Released During Period µCi/ml 5.52E-07** 2.57E-07** 4.72E-02** 1.01E-06**
3. Percent of Applicable Limit  % *** *** *** ***

C. Dissolved and Entrained Noble Gases

1. Total Releases Curies
  • 3.43E-06**
  • 2.018E-05 8 Average Diluted Concentration
2. Released During Period µCi/ml
  • 3.43E-06**
  • 4.617E-12
3. Percent of Applicable Limit  % *** *** *** ***

D. Gross Alpha Radioactivity

1. Total Releases Curies * * *
  • 48 Average Diluted Concentration
2. Released During Period µCi/ml * * *
  • E. Volume of Liquid Waste to Discharge Canal (Prior to dilution) Liters 2.545E+05 3.379E+04
  • 6.112E+05 3 F. Volume of Dilution Water for Period Liters 1.772E+09 4.088E+08
  • 4.369E+09 10 G. Total CCW Gigagal 2.32E+02 2.61E+02 2.65E+02 2.71E+02
  • - Not Detected.
    • - Includes activity from abnormal releases. Dilution flow was not determined for all abnormal releases.
      • - The applicable limit is expressed in terms of dose. See Radiological Impact Report.

E-17

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2B Liquid Effluents

1. Fission and Activation Products Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 Sr-89
  • 1.97E-06 *
  • 8.85E-07 *
  • Cs-134 1.99E-05 1.30E-05 *
  • 8.25E-07 Co-58
  • 1.59E-05 *
  • 1.29E-04 Fe-55 6.52E-06 1.01E-04 *
  • Zn-65
  • 4.22E-07 *
  • Mn-54 4.82E-06 3.58E-05
  • 3.68E-06 Cr-51 * * *
  • Zr-95 * * *
  • Nb-95 * * *
  • Te-99m * * *
  • Ba-140 * * *
  • La-140 * * *
  • Ce-141 * * *
  • F-18 9.45E-04 3.62E-06
  • 2.640E-05 Ag-110m 6.86E-06 * *
  • Y-92 * *
  • 2.73E-05 Mn-56
  • 6.66E-07 *
  • Na-24 7.42E-04 1.45E-06 *
  • Sb-124 2.21E-06 * *
  • Sr-92 5.96E-06 * *
  • Zn-69m 6.32E-06 2.78E-07 *
  • As-76
  • 4.18E-07 *
  • Nb-97
  • 5.36E-08 *
  • E-18

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT LIQUID EFFLUENTS TABLE 2B Liquid Effluents

1. Fission and Activation Products Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 I-134
  • 2.21E-07 *
  • Total for period 2.34E-03 1.22E-03
  • 2.56E-04
2. Dissolved and Entrained Gases Isotope in Curies Quarter 1 Quarter 2 Quarter 3 Quarter 4 Xe-133
  • 3.63E-07
  • 1.35E-05 Xe-135
  • 3.07E-06
  • 6.68E-06 Total for Period
  • 3.43E-06
  • 2.02E-05
  • - Not Detected.

E-19

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 Page 1 of 8 Solid Waste and Irradiated Fuel Shipments A. Solid Waste Shipped Offsite for Burial or Disposal (not Irradiated Fuel)

1. Type of Waste Unit Jan - Jun 2017 July-Dec 2017 Error %
a. Spent resins, filters, filter sludge, m3 evaporator bottoms, etc. 8.76E+01 8.51E+01 +/- 25%

Ci 4.36E+02 1.40E+03 +/-25%

b. Dry compressible waste, m3 contaminated equipment, etc. 1.41E+03 8.11E+02 +/- 25%

Ci 1.62E+00 1.06E+00 +/- 25%

c. Irradiated Components, Control Rod blades & LPRMs with fission m3 chambers 0.00E+00 0.00E+00 +/- 25%

Ci 0.00E+00 0.00E+00 +/- 25%

d. Other - Combined Packages m3 0.00E+00 0.00E+00 +/- 25%

Ci 0.00E+00 0.00E+00 +/- 25%

E-20

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 2 of 8 Solid Waste and Irradiated Fuel Shipment

2. Estimate of Major Nuclide Composition
a. Spent resins, filters, filter sludge, evaporator bottoms, etc.

Nuclide Percentage Curies

1) H-3 2.88E-03 5.32E-02
2) C-14 2.62E-02 4.83E-01
3) CR-51 2.39E-02 4.40E-01
4) MN-54 6.34E+00 1.17E+02
5) FE-55 1.75E+01 3.22E+02
6) FE-59 3.30E-03 6.08E-02
7) CO-57 2.18E-02 4.02E-01
8) CO-58 2.13E+00 3.93E+01
9) CO-60 6.23E+01 1.15E+03
10) NI-63 4.40E-01 8.11E+00
11) ZN-65 6.83E+00 1.26E+02
12) SR-89 1.21E-02 2.23E-01
13) SR-90 6.72E-03 1.24E-01
14) ZR-95 1.06E-01 1.96E+00
15) NB-95 1.27E-01 2.34E+00
16) TC-99 1.30E-01 2.39E+00
17) AG-110M 2.31E+00 4.26E+01
18) SB-124 4.65E-04 8.57E-03
19) I-131 4.04E-04 7.46E-03
20) CS-134 3.88E-02 7.15E-01
21) CS-137 1.31E+00 2.41E+01
22) LA-140 1.17E-08 2.16E-07
23) CE-144 3.52E-01 6.49E+00
24) PU-238 3.04E-06 5.61E-05
25) PU-239 1.24E-06 2.28E-05 E-21

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 3 of 8 Solid Waste and Irradiated Fuel Shipment

2. Estimate of Major Nuclide Composition (Continued)
a. Spent resins, filters, filter sludge, evaporator bottoms, etc. (Continued)

Nuclide Percentage Curies

26) PU-241 7.91E-05 1.46E-03
27) AM-241 2.76E-06 5.09E-05
28) CM-232 1.97E-05 3.63E-04
29) CM-243 1.43E-05 2.64E-04 E-22

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 4 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued)
b. Dry, Compressible Waste, Contaminated Equipment, etc.

Nuclide Percentage Curies

1) H-3 3.36E-03 9.02E-05
2) C-14 2.86E-03 7.67E-05
3) CR-51 2.21E-01 5.93E-03
4) MN-54 3.61E+00 9.69E-02
5) FE-55 1.25E+01 3.36E-01
6) FE-59 5.82E-02 1.56E-03
7) CO-58 4.25E-01 1.14E-02
8) CO-60 6.97E+01 1.87E+00
9) NI-63 6.00E-01 1.61E-02
10) ZN-65 2.51E+00 6.73E-02
11) SR-89 1.19E-03 3.18E-05
12) SR-90 1.26E-02 3.37E-04
13) NB-95 3.84E-02 1.03E-03
14) TC-99 1.04E-02 2.80E-04
15) AG-110M 1.34E+00 3.60E-02
16) SB-125 2.31E-01 6.19E-03
17) CS-134 3.49E-01 9.37E-03
18) CS-137 8.20E+00 2.20E-01
19) CE-144 1.22E-01 3.26E-03
20) PU-238 4.74E-05 1.27E-06
21) PU-239 2.39E-05 6.41E-07
22) PU-241 2.61E-03 7.00E-05
23) AM-241 5.03E-04 1.35E-05
24) CM-242 2.32E-06 6.22E-08
25) CM-243 1.19E-04 3.18E-06 E-23

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 5 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued)
c. Irradiated Components, Control Rods, LPRMs with fission chambers Nuclide Percentage Curies None E-24

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 6 of 8 Solid Waste and Irradiated Fuel Shipments

2. Estimate of Major Nuclide Composition (Continued) d Other (Combined Packages)

Nuclide Percentage Curies None E-25

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 7 of 8 Solid Waste and Irradiated Fuel Shipments

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination Alaron Nuclear Services 3 Hittman Transport Services 2138 State Route 18 Energy Solutions 4 Hittman Transport Services 1790 Dock Street Energy Solutions LLC.

36 Hittman Transport Services (CLIVE)

Energy Solutions Services 25 Hittman Transport Services (Bear Creek)

Energy Solutions Inc.

1 Hittman Transport Services (Gallaher Road)

Omega Technical Services 18 Hubbard Trucking Inc.

Energy Solutions Services 3 Interstate Ventures (Bear Creek)

Omega Technical Services 7 Interstate Ventures Inc.

4 Interstate Ventures TOXCO, Inc.

Omega Technical Services 5 Specialty Transport Inc.

Energy Solutions (Bear 1 Tennessee Valley Authority-TVA Creek)

E-26

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Solid Waste TABLE 3 (Continued)

Page 8 of 8 Solid Waste and Irradiated Fuel Shipments B. Irradiated Fuel Shipments Number of Shipments Mode of Transportation Destination 0

0 0 E-27

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

1. Introduction Potential doses to the maximum exposed individual and the population around Browns Ferry Nuclear Plant (BFN) are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). The methodology used to estimate dose for determining plant releases for the reporting period is specified in Sections 6 and 7 of the ODCM. Dispersion of radioactive effluents in the environment is estimated using meteorological data and river flow measured during the period. In this report, the doses resulting from releases are described and compared to limits established for BFN.
2. Dose Limits The ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of radioactive effluents. These limits are set well below the Technical Specification limits which govern the concentrations of radioactivity and doses permissible in unrestricted areas. This ensures that radioactive effluent releases are As Low As Reasonably Achievable.

The air dose limits in areas at and beyond the Site Boundary due to noble gases released in gaseous effluents per unit are:

5 mrad per quarter and 10 mrad per year for gamma radiation.

- and -

10 mrad per quarter and 20 mrad per year for beta radiation.

The dose limits to a member of the public in an unrestricted area from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives > 8 days released in gaseous effluents for each unit are:

7.5 mrem per quarter and 15 mrem per year to any organ.

The dose or dose commitment to a member of the public from radioactive material in liquid effluents released to unrestricted areas are:

1.5 mrem per quarter and 3 mrem per year to the total body,

- and -

5 mrem per quarter and 10 mrem per year to any organ.

The limit for the total effective dose equivalent to an individual member of the public inside the site boundary is:

100 mrem per year.

E-28

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

2. Dose Limits (Continued)

The Environmental Protection Agency limits for total dose to any member of the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are:

25 mrem per year to the whole body, 75 mrem per year to the thyroid,

- and -

25 mrem per year to any other organ.

3. Dose Calculations Estimated doses to members of the public are determined using computer models (the Gaseous Effluent Licensing Code, and the Quarterly Water Dose Assessment Code (QWATA)).

These models are based on guidance provided by the Nuclear Regulatory Commission (NRC) for determining the potential dose to individuals and populations living in the vicinity of the plant.

The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a maximum exposed individual. Some of the factors used in these calculations (such as ingestion rates) are maximum values to ensure conservative reporting data. The values chosen will tend to overestimate the dose. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 4, 5, and 6.

4. Doses From Airborne Effluents For airborne effluents, members of the public can be exposed to radiation from several sources:

direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently consumed by animals.

a. Airborne Release Points There are four monitored release points from BFN: the turbine building, the radwaste building, the reactor building, and the stack.

Releases from the turbine building are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from wind speeds and directions measured 10.5 meters above the ground and from the vertical temperature difference between 10.03 and 45.30 meters, and are presented for each quarter in the 2017 Meteorological Data Tables 7A, 7B, 7C, and 7D.

E-29

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

4. Doses From Airborne Effluents (Continued)
a. Airborne Release Points (Continued)

Releases from the radwaste and reactor buildings are considered split-level releases.

Portions of the release are treated as ground-level while other portions are considered elevated depending on the ratio of the vertical exit velocity to the horizontal wind speed.

The split-level dispersion approach is implemented using a model that requires two complete quarterly JFDs for each effluent vent, one for the ground-level releases and one for the elevated releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10.5 meters above ground-level and from the vertical temperature difference between 10.03 and 45.30 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 45.74 meter level and the vertical temperature difference between 10.03 and 89.59 meters. Both of these JFDs are given for each quarter in the 2017 Meteorological Data Tables 8A, 8B, 8C, and 8D.

Releases from the stack are considered to be elevated releases. The JFDs for elevated releases are based on wind directions and wind speeds measured at 90.29 meters and the vertical temperature difference between 10.03 and 89.59 meters, and are given for each quarter in the 2017 Meteorological Data Tables 9A, 9B, 9C, 9D.

b. Meteorological Data Meteorological variables at BFN are measured continuously. Measurements collected include wind speed and wind direction at heights of 10.5, 45.74, and 90.29 meters above the ground, and temperature at heights of 10.03, 45.30, and 89.59 meters above the ground. Quarterly JFDs are calculated for each release point using the appropriate levels of meteorological data. A quarterly JFD gives the percentage of the time that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of noncalm wind directions less than 1.6 m/s (3.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

The generally open terrain around BFN does not cause any significant effects on the transport and dispersion of gaseous effluents from the plant. Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (30-60 meters). Between 30 and 80 kilometers, the hills become larger to the north and south and mountainous to the east and northeast. The Tennessee River/Wheeler Lake may have a minor effect on transport and dispersion in the immediate vicinity of BFN during periods of winds with a southerly component, overcast skies, and relatively high wind speeds. Also, the lower layer (10-45 meters) stability class tends to be more stable. However, during this infrequent condition, dose estimates will be conservative.

E-30

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

4. Doses From Airborne Effluents (Continued)
c. External Exposure Dose Dose calculated for maximum external air dose (gamma-air and beta-air) are made for points at and beyond the unrestricted area boundary as described in the BFN ODCM. The highest of these doses is then selected.
d. Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are calculated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.
e. Organ Dose Dose to an organ due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into three possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. However, for the ingestion dose, only those pathways that exist for each receptor are considered in the sum, e.g., milk ingestion doses are included only for locations where milk was consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden was identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

The maximum organ dose, thyroid dose, and total body dose from airborne effluents are presented in Table 4.

5. Doses From Liquid Effluents For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentration of radionuclides in the Tennessee River is calculated by a computer model which uses measured hydraulic data downstream of BFN. Parameters used to determine the doses are based on guidance given by the NRC for maximum ingestion rates, exposure times, etc.

E-31

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

5. Doses From Liquid Effluents (Continued)

Wherever possible, parameters used in the dose calculation are site specific. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the BFN ODCM.

a. Liquid Release Points and River Data Radionuclide concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. When necessary, liquid releases from BFN, located at Tennessee River Mile 294, are made through diffusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-fifth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam (Wheeler Dam), at Tennessee River Mile 283.

Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plants release point. The maximum exposed individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam. The maximum exposed individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply

[West Morgan - East Lawrence (WMEL)]. This could be interpreted as indicating that the maximum exposed individual, as assumed for liquid releases from BFN, is an individual who obtains all of his drinking water at WMEL, consumes fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just downstream of the plants release point. Doses calculated for the maximum exposed individual due to liquid effluents for each quarter in the period are presented in Table 5 along with the average river flows past the plant site for the periods.

6. Population Doses Population doses due to airborne effluents are calculated for people living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion population doses are calculated assuming that each individual consumed milk, vegetables, and meat produced within the sector in which the individual resides.

Population doses due to liquid effluents are calculated for the entire downstream Tennessee River population. Water ingestion population doses are calculated using actual population figures for downstream public water supplies. Fish ingestion population doses are calculated assuming that all sport fish caught in the Tennessee River are consumed by the Tennessee River population. Recreation population doses are calculated using historical recreational data on the number of shoreline visits at downstream locations.

Population doses calculated for airborne and liquid effluents are presented in Tables 4 and 5.

E-32

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

7. Offsite Direct Radiation Dose External gamma radiation levels were measured by environmental dosimeters deployed around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP).

The quarterly gamma radiation levels determined from these dosimeters during this reporting period averaged approximately 17 mrem/quarter at onsite stations (at or near the site boundary) and approximately 14 mrem/quarter at offsite stations. The onsite stations are approximately 3 mrem/quarter higher than at offsite stations. This difference is consistent with levels measured for pre-operation and construction phases of the Tennessee Valley Authority nuclear plants where the average radiation levels onsite were generally 2-6 mrem/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences.

Fluctuations in natural background dose rates and in dosimeter readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

8. Dose To A Member Of The Public Inside The Site Boundary Pursuant to ODCM Section 7.7.5, a review was performed to determine the highest dose to a member of the public in the site boundary. The dose to a member of the public consists of the sum of dose commitments from effluent releases as well as any direct radiation dose.

The gaseous effluent dose commitment is negligible compared to the direct radiation dose.

The direct radiation dose was determined from area environmental dosimeters located onsite. It consisted of gamma dose from the plume, ground contamination, and from equipment sources (i.e., tanks, turbine shine, radioactive material storage areas, etc.). The critical location was determined to be an Optically Stimulated Luminescence (OSL) dosimeter near the Livewell Center (Training Center). The direct radiation dose accounting for background and occupancy was approximately 1.0 mrem/quarter during 2017.

The total annual dose commitment to a member of the public for 2017 was 4.1 mrem. It can be concluded that the dose limit for a member of the public at the site boundary as specified in 10 CFR 20.1301 was not exceeded.

9. Total Dose To determine compliance with 40 CFR 190, annual total dose contributions to the maximum exposed individual from BFN radioactive effluents and all other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than the thyroid for the maximum exposed individual is conservatively calculated by summing the following doses: the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct E-33

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT

9. Total Dose (continued) radiation dose levels as measured by the REMP. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than the thyroid) to determine compliance.

The annual thyroid dose to the maximum exposed individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the REMP. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.

Total dose from the fuel cycle is presented in Table 6.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 Page 1 of 4 Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NNW/1650 Gamma Air 4.92E-11 mrad 5 mrad <1%

meters NNW/1650 Beta Air 1.50E-10 mrad 10 mrad <1%

meters Submersion 8.74E-04 N/2440 Total Body NA NA mrem meters 1.03E-03 N/2440 Skin NA NA mrem meters Organ Doses 3.32E-02 Child/Bone 7.5 mrem <1% N/2540 meters mrem 3.06E-02 Child/Thyroid 7.5 mrem <1% N/2540 meters mrem Child/Total 3.01E-02 7.5 mrem <1% N/2540 meters Body mrem Population Doses Total Body Dose 1.38E-01 man-rem Maximum Organ Dose (organ) 4.50E-01 man-rem (Bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 2 of 4 Doses from Airborne Effluents Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 4.16E-11 mrad 5 mrad <1% N/1525 meters Beta Air 1.27E-10 mrad 10 mrad <1% N/1525 meters Submersion Total Body 2.16E-04 mrad NA NA E/1410 meters Skin 2.54E-04 mrad NA NA E/1410 meters Organ Doses Child/Bone 2.74E-02 7.5 mrem <1% N/2540 meters 1.37E-02 <1%

Child/Thyroid 7.5 mrem N/2540 meters mrem Child/Total 1.26E-02 <1%

7.5 mrem N/2540 meters Body mrem Population Doses Total Body Dose 1.85E-01 man-rem Maximum Organ Dose (organ) 9.05E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 3 of 4 Doses from Airborne Effluents Third Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NE/5200 Gamma Air 3.40E-11 mrad 5 mrad <1%

meters NE/5200 Beta Air 1.04E-10 mrad 10 mrad <1%

meters Submersion Total Body 7.21E-04 mrad NA NA E/1410 meters Skin 8.48E-04 mrad NA NA E/1410 meters Organ Doses Child/Bone 3.62E-02 7.5 mrem <1% NE/4290 meters Child/Thyroid 1.97E-02 7.5 mrem <1% N/2540 meters Child/Total 1.89E-02 7.5 mrem <1% N/2540 meters Body Population Doses Total Body Dose 2.75E-01 man-rem Maximum Organ Dose (organ) 9.05E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT TABLE 4 (Continued)

Page 4 of 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External NNW/1650 Gamma Air 8.79E-11 mrad 5 mrad <1%

meters NNW/1650 Beta Air 2.69E-10 mrad 10 mrad <1%

meters Submersion NNW/1650 Total Body 4.24E-04 mrad NA NA meters NNW/1650 Skin 4.98E-04 mrad NA NA meters Organ Doses NNW/2290 Child/ Bone 3.10E-02 7.5 mrem <1%

meters 2.45E-02 NNW/2290 Child/Thyroid 7.5 mrem <1%

mrem meters Child /Total 2.29E-02 NNW/2290 7.5 mrem <1%

Body mrem meters Population Doses Total Body Dose 1.99E-01 man-rem Maximum Organ Dose (organ) 6.70E-01 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 Page 1 of 4 Doses from Liquid Effluents First Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 1.5E-04 Recreation 1.1E-05 Water 9.2E-06 Ingestion Total 1.7E-04 1.5 mrem <1%

Teen Liver Fish Ingestion 2.4E-04 Recreation 1.1E-05 Water 8.5E-06 Ingestion Total 2.6E-04 5 mrem <1%

Child Thyroid Fish Ingestion 1.1E-07 Recreation 1.1E-05 Water 8.8E-06 Ingestion Total 2.0E-05 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 44,432 Population Doses Total Body Dose 2.3E-03 man-rem Maximum Organ Dose (organ) 3.1E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 2 of 4 Doses from Liquid Effluents Second Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 1.9E-04 Recreation 1.9E-05 Water 4.2E-06 Ingestion Total 2.1E-04 1.5 mrem <1%

Teen Liver Fish Ingestion 3.0E-04 Recreation 1.9E-05 Water 5.4E-06 Ingestion Total 3.2E-04 5 mrem <1%

Child Thyroid Fish Ingestion 9.9E-09 Recreation 1.9E-05 Water 8.0E-07 Ingestion Total 2.0E-05 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 50,741 Population Doses Total Body Dose 3.2E-03 man-rem Maximum Organ Dose (organ) 4.3E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 3 of 4 Doses from Liquid Effluents Third Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Child Total Body Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 1.5 mrem <1%

Child Liver Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 5 mrem <1%

Child Thyroid Fish Ingestion 6.9E-09 Recreation 0.0E+00 Water Ingestion 5.6E-07 Total 5.7E-07 5 mrem <1%

Average River Flow past BFN (cubic feet per second): 36,086 Population Doses Total Body Dose 9.2E-06 man-rem Maximum Organ Dose (organ) 9.2E-06 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5 (Continued)

Page 4 of 4 Doses from Liquid Effluents Fourth Quarter*

Individual Doses (mrem)

Age Group Organ Dose Dose Quarterly Percent of Pathway Limit Limit Adult Total Body Fish Ingestion 2.0E-05 Recreation 6.7E-06 Water 3.2E-05 Ingestion Total 5.9E-05 1.5 mrem <1%

Child Bone Fish Ingestion 2.9E-05 Recreation 6.7E-06 Water 4.4E-05 Ingestion Total 8.0E-05 5 mrem <1%

Child Thyroid Fish Ingestion 6.2E-07 Recreation 6.7E-06 Water 4.3E-05 Ingestion Total 5.0E-05 5 mrem <1%

Average Riverflow past BFN (cubic feet per second): 39,131 Population Doses Total Body Dose 1.5E-03 man-rem Maximum Organ Dose (organ) 1.6E-03 man-rem (liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yr for natural background).

  • Includes dose from abnormal releases.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 5A Page 1 of 1 Total Dose from I-131 Water Ingestion Pathway Quarter 1 2 3 4 Totals I-131 Ci 0 0 0 8.3E-07 8.3E-07 Infant/Thyroid (mrem) 0 0 0 2.9E-07 2.9E-07 Population/Thyroid (mrem) 0 0 0 2.1E-06 2.1E-06 Doses from I-131 Water Ingestion Pathway The REMP requirements as specified in Table 3.12-1 from NUREG 1302, Offsite Dose Calculation Manual Guidance: Standard Radiological Effluent Controls for Boiling Water Reactors, dated April 1991, requires an I-131 specific analysis for drinking water pathway samples if the annual dose from I-131 is greater than 1 mrem. In order to evaluate the need for implementation of this additional analysis, the drinking water pathway dose from I-131 to the maximum organ and age group was calculated. There was no drinking water pathway dose from I-131 and the performance of the I-131 specific analysis is not required for BFN REMP drinking water samples.

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT RADIOLOGICAL IMPACT Table 6 Page 1 of 1 Total Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)

Total body air submersion 8.74E-04 2.16E-04 7.21E-04 4.24E-04 Critical organ dose (air) 3.32E-02 2.74E-02 3.62E-02 3.10E-02 Total body dose (liquid) 1.70E-04 2.10E-04 5.70E-07 5.90E-05 Maximum organ dose (liquid) 2.60E-04 3.20E-04 5.70E-07 8.00E-05 Direct Radiation Dose 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Total 3.45E-02 2.81E-02 3.69E-02 3.16E-02 Cumulative Total Dose (mrem) 1.31E-01 (Total body or any other organ)

Annual Dose Limit 2.5E+01 (mrem)

< 1%

Percent of Limit Thyroid Dose (mrem)

Total body air submersion 8.74E-04 2.16E-04 7.21E-04 4.24E-04 Thyroid dose (airborne) 3.06E-02 1.37E-02 1.97E-02 2.45E-02 Total body dose (liquid) 1.70E-04 2.10E-04 5.70E-07 5.90E-05 Thyroid dose (liquid) 2.00E-05 2.00E-05 5.70E-07 5.00E-05 Direct Radiation Dose 0.0E+00 0.0E+00 0.0E+00 0.0E+00 Total 3.17E-02 1.41E-02 2.04E-02 2.50E-02 Cumulative Total Dose 9.12E-02 (Thyroid) mrem Annual Dose Limit 7.5E+01 (mrem)

Percent of Limit < 1%

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BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FIRST QUARTER E-45

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.510 0.093 0.000 0.000 0.603 NNE 0.000 0.000 0.000 0.000 0.000 0.278 0.000 0.000 0.000 0.278 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.093 0.603 0.139 0.000 0.000 0.000 0.000 0.835 SSE 0.000 0.000 0.139 0.232 0.000 0.000 0.000 0.000 0.000 0.371 S 0.000 0.000 0.186 0.464 0.000 0.000 0.000 0.000 0.000 0.650 SSW 0.000 0.000 0.046 0.232 0.000 0.000 0.000 0.000 0.000 0.278 SW 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.000 0.000 0.046 0.186 0.000 0.000 0.000 0.232 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.139 NW 0.000 0.000 0.046 0.000 0.000 0.139 0.093 0.000 0.000 0.278 NNW 0.000 0.000 0.000 0.000 0.000 0.510 0.186 0.000 0.000 0.696 SUBTOTAL 0.000 0.000 0.510 1.671 0.232 1.717 0.464 0.000 0.000 4.594 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS A 99 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 99 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 7.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-46

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.464 0.000 0.000 0.000 0.464 NNE 0.000 0.000 0.000 0.000 0.139 0.093 0.000 0.000 0.000 0.232 NE 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.093 0.278 0.046 0.000 0.000 0.000 0.000 0.418 SSE 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.278 S 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 SSW 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.186 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.000 0.371 0.232 0.000 0.000 0.603 NW 0.000 0.000 0.000 0.000 0.000 0.325 0.139 0.000 0.000 0.464 NNW 0.000 0.000 0.000 0.000 0.000 0.278 0.093 0.000 0.000 0.371 SUBTOTAL 0.000 0.000 0.371 0.557 0.371 1.671 0.464 0.000 0.000 3.434 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS B 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 8.56 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-47

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.186 NNE 0.000 0.000 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.278 NE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.232 SSE 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 S 0.000 0.000 0.232 0.093 0.046 0.000 0.000 0.000 0.000 0.371 SSW 0.000 0.000 0.232 0.139 0.000 0.000 0.000 0.000 0.000 0.371 SW 0.000 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.232 WSW 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.093 0.093 0.371 0.232 0.000 0.000 0.789 NW 0.000 0.000 0.000 0.046 0.093 0.325 0.093 0.000 0.000 0.557 NNW 0.000 0.000 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.186 SUBTOTAL 0.000 0.000 0.789 0.789 0.603 1.114 0.325 0.000 0.000 3.619 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS C 78 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 78 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 6.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-48

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.371 0.371 0.974 0.974 0.000 0.000 0.000 2.738 NNE 0.000 0.000 0.278 0.557 1.299 0.418 0.000 0.000 0.000 2.552 NE 0.000 0.000 0.278 0.278 0.418 0.557 0.000 0.000 0.000 1.531 ENE 0.000 0.000 0.232 0.000 0.046 0.000 0.000 0.000 0.000 0.278 E 0.000 0.000 0.186 0.093 0.046 0.000 0.000 0.000 0.000 0.325 ESE 0.000 0.000 0.325 0.928 0.093 0.000 0.000 0.000 0.000 1.346 SE 0.000 0.000 0.882 0.371 0.046 0.000 0.000 0.000 0.000 1.299 SSE 0.000 0.000 0.928 0.371 0.000 0.000 0.000 0.000 0.000 1.299 S 0.000 0.000 1.299 0.696 0.186 0.232 0.000 0.000 0.000 2.413 SSW 0.000 0.000 0.418 0.742 0.139 0.000 0.000 0.000 0.000 1.299 SW 0.000 0.000 0.510 0.139 0.000 0.000 0.000 0.000 0.000 0.650 WSW 0.000 0.000 0.464 0.278 0.186 0.139 0.000 0.000 0.000 1.067 W 0.000 0.000 0.464 0.835 0.742 0.510 0.000 0.000 0.000 2.552 WNW 0.000 0.000 0.232 0.557 0.510 1.114 0.603 0.000 0.000 3.016 NW 0.000 0.000 0.093 0.418 0.742 1.439 1.717 0.278 0.000 4.687 NNW 0.000 0.000 0.139 0.325 0.696 1.392 0.882 0.000 0.000 3.434 SUBTOTAL 0.000 0.046 7.100 6.961 6.125 6.775 3.202 0.278 0.000 30.487 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS D 657 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 657 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 6.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-49

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.464 0.835 0.232 0.139 0.000 0.000 0.000 1.717 NNE 0.000 0.093 0.418 0.557 1.160 0.093 0.000 0.000 0.000 2.320 NE 0.000 0.093 0.418 0.557 0.371 0.139 0.000 0.000 0.000 1.578 ENE 0.000 0.046 0.325 0.371 0.046 0.000 0.000 0.000 0.000 0.789 E 0.000 0.046 1.253 0.464 0.000 0.000 0.000 0.000 0.000 1.763 ESE 0.000 0.093 1.624 1.253 0.278 0.046 0.000 0.000 0.000 3.295 SE 0.000 0.232 1.299 0.557 0.139 0.000 0.000 0.000 0.000 2.227 SSE 0.000 0.603 1.578 0.557 0.046 0.000 0.000 0.000 0.000 2.784 S 0.000 0.139 2.227 2.181 1.995 0.510 0.000 0.000 0.000 7.053 SSW 0.000 0.186 0.510 0.742 1.114 0.000 0.000 0.000 0.000 2.552 SW 0.000 0.046 0.325 0.186 0.000 0.000 0.000 0.000 0.000 0.557 WSW 0.000 0.046 0.742 0.371 0.000 0.000 0.000 0.000 0.000 1.160 W 0.000 0.046 0.510 0.418 0.093 0.093 0.000 0.000 0.000 1.160 WNW 0.000 0.000 0.186 0.325 0.278 0.000 0.000 0.000 0.000 0.789 NW 0.000 0.000 0.278 0.232 0.186 0.325 0.278 0.000 0.000 1.299 NNW 0.000 0.000 0.603 0.696 1.021 0.742 0.046 0.000 0.000 3.109 SUBTOTAL 0.000 1.717 12.761 10.302 6.961 2.088 0.325 0.000 0.000 34.153 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS E 736 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 736 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 4.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-50

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.974 0.603 0.000 0.000 0.000 0.000 0.000 1.578 NNE 0.000 0.000 0.139 0.371 0.093 0.000 0.000 0.000 0.000 0.603 NE 0.000 0.046 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.232 ENE 0.000 0.000 0.325 0.093 0.000 0.000 0.000 0.000 0.000 0.418 E 0.000 0.278 0.835 0.046 0.000 0.000 0.000 0.000 0.000 1.160 ESE 0.000 0.139 0.696 0.046 0.000 0.000 0.000 0.000 0.000 0.882 SE 0.000 0.371 1.021 0.278 0.000 0.000 0.000 0.000 0.000 1.671 SSE 0.000 0.974 0.789 0.000 0.000 0.000 0.000 0.000 0.000 1.763 S 0.000 0.418 1.439 1.810 0.835 0.093 0.000 0.000 0.000 4.594 SSW 0.000 0.093 0.557 0.557 0.139 0.000 0.000 0.000 0.000 1.346 SW 0.000 0.046 0.186 0.046 0.000 0.000 0.000 0.000 0.000 0.278 WSW 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.186 W 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NW 0.000 0.093 0.232 0.046 0.000 0.000 0.000 0.000 0.000 0.371 NNW 0.000 0.139 0.232 0.464 0.093 0.046 0.000 0.000 0.000 0.974 SUBTOTAL 0.000 2.923 7.610 4.455 1.160 0.139 0.000 0.000 0.000 16.288 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS F 351 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 351 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 3.04 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-51

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.003 0.093 0.278 0.046 0.000 0.000 0.000 0.000 0.000 0.420 NNE 0.001 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.187 NE 0.001 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.140 ENE 0.002 0.093 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.280 E 0.002 0.093 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.280 ESE 0.003 0.139 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.374 SE 0.003 0.325 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.421 SSE 0.014 0.928 1.067 0.000 0.000 0.000 0.000 0.000 0.000 2.009 S 0.017 0.278 2.135 0.603 0.000 0.000 0.000 0.000 0.000 3.033 SSW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.001 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.140 SUBTOTAL 0.046 2.042 4.548 0.789 0.000 0.000 0.000 0.000 0.000 7.425 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS G 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 2.10 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-52

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES SECOND QUARTER E-53

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NNE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.414 0.184 0.000 0.000 0.000 0.000 0.000 0.597 SSE 0.000 0.000 0.781 0.138 0.000 0.000 0.000 0.000 0.000 0.919 S 0.000 0.000 1.149 0.230 0.000 0.000 0.000 0.000 0.000 1.379 SSW 0.000 0.000 0.414 0.689 0.000 0.000 0.000 0.000 0.000 1.103 SW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.138 W 0.000 0.000 0.000 0.000 0.000 0.276 0.000 0.000 0.000 0.276 WNW 0.000 0.000 0.000 0.000 0.000 0.184 0.138 0.000 0.000 0.322 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.184 SUBTOTAL 0.000 0.000 2.849 1.333 0.046 0.781 0.184 0.000 0.000 5.193 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS A 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 4.47 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-54

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.184 NNE 0.000 0.000 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.138 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.000 0.000 0.184 SE 0.000 0.000 0.184 0.276 0.000 0.000 0.000 0.000 0.000 0.460 SSE 0.000 0.000 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.230 S 0.000 0.000 0.368 0.092 0.000 0.000 0.000 0.000 0.000 0.460 SSW 0.000 0.000 0.414 0.138 0.000 0.000 0.000 0.000 0.000 0.551 SW 0.000 0.000 0.138 0.184 0.092 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.000 0.046 0.230 0.000 0.092 0.000 0.000 0.000 0.368 W 0.000 0.000 0.046 0.092 0.046 0.138 0.000 0.000 0.000 0.322 WNW 0.000 0.000 0.000 0.000 0.092 0.184 0.138 0.000 0.000 0.414 NW 0.000 0.000 0.000 0.138 0.184 0.184 0.184 0.000 0.000 0.689 NNW 0.000 0.000 0.000 0.046 0.046 0.138 0.000 0.000 0.000 0.230 SUBTOTAL 0.000 0.000 1.425 1.425 0.506 1.057 0.322 0.000 0.000 4.733 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS B 103 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 103 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 5.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-55

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.046 0.138 0.184 0.000 0.000 0.000 0.368 NNE 0.000 0.000 0.000 0.092 0.276 0.046 0.000 0.000 0.000 0.414 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.506 0.184 0.000 0.000 0.000 0.000 0.000 0.689 SSE 0.000 0.000 0.689 0.000 0.000 0.000 0.000 0.000 0.000 0.689 S 0.000 0.000 0.597 0.000 0.000 0.000 0.000 0.000 0.000 0.597 SSW 0.000 0.000 0.368 0.322 0.000 0.000 0.000 0.000 0.000 0.689 SW 0.000 0.000 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.000 0.184 0.138 0.000 0.092 0.000 0.000 0.000 0.414 W 0.000 0.000 0.046 0.322 0.138 0.230 0.000 0.000 0.000 0.735 WNW 0.000 0.000 0.000 0.230 0.138 0.184 0.092 0.092 0.000 0.735 NW 0.000 0.000 0.000 0.184 0.138 0.230 0.046 0.046 0.000 0.643 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 2.665 1.838 0.827 1.057 0.184 0.138 0.000 6.710 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS C 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 5.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-56

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.368 0.460 0.322 0.092 0.000 0.000 0.000 1.241 NNE 0.000 0.000 0.276 0.643 0.551 0.643 0.000 0.000 0.000 2.114 NE 0.000 0.046 0.138 0.414 0.322 0.368 0.046 0.000 0.000 1.333 ENE 0.000 0.000 0.092 0.092 0.092 0.046 0.000 0.000 0.000 0.322 E 0.000 0.092 0.414 0.230 0.046 0.000 0.000 0.000 0.000 0.781 ESE 0.000 0.092 0.735 0.919 0.322 0.092 0.000 0.000 0.000 2.160 SE 0.000 0.046 2.068 0.368 0.000 0.046 0.000 0.000 0.000 2.528 SSE 0.000 0.000 2.482 0.092 0.000 0.000 0.000 0.000 0.000 2.574 S 0.000 0.046 2.849 0.230 0.000 0.000 0.000 0.000 0.000 3.125 SSW 0.000 0.276 1.976 0.873 0.092 0.000 0.000 0.000 0.000 3.217 SW 0.000 0.092 0.873 0.092 0.046 0.000 0.000 0.000 0.000 1.103 WSW 0.000 0.092 1.333 0.597 0.046 0.046 0.000 0.000 0.000 2.114 W 0.000 0.138 1.333 2.574 1.471 0.781 0.643 0.000 0.000 6.939 WNW 0.000 0.000 0.276 0.689 0.322 0.597 0.322 0.138 0.000 2.344 NW 0.000 0.000 0.184 0.506 0.689 0.781 0.276 0.000 0.000 2.436 NNW 0.000 0.000 0.276 0.460 0.735 0.460 0.092 0.000 0.000 2.022 SUBTOTAL 0.000 0.919 15.671 9.237 5.055 3.952 1.379 0.138 0.000 36.351 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS D 791 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 791 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 4.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-57

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.781 0.506 0.092 0.000 0.000 0.000 0.000 1.425 NNE 0.000 0.276 0.873 0.919 0.322 0.092 0.000 0.000 0.000 2.482 NE 0.000 0.230 0.643 0.184 0.230 0.092 0.000 0.000 0.000 1.379 ENE 0.000 0.276 0.551 0.092 0.000 0.000 0.000 0.000 0.000 0.919 E 0.000 0.276 1.608 0.368 0.000 0.000 0.000 0.000 0.000 2.252 ESE 0.000 0.551 1.563 0.460 0.138 0.000 0.000 0.000 0.000 2.711 SE 0.000 0.414 0.919 0.046 0.000 0.000 0.000 0.000 0.000 1.379 SSE 0.000 0.551 0.735 0.000 0.000 0.000 0.000 0.000 0.000 1.287 S 0.000 0.551 1.517 0.322 0.000 0.000 0.000 0.000 0.000 2.390 SSW 0.000 0.551 1.930 0.735 0.092 0.000 0.000 0.000 0.000 3.309 SW 0.000 0.597 0.919 0.046 0.046 0.000 0.000 0.000 0.000 1.608 WSW 0.000 0.322 0.506 0.046 0.092 0.000 0.000 0.000 0.000 0.965 W 0.000 0.184 1.149 0.781 0.276 0.046 0.000 0.000 0.000 2.436 WNW 0.000 0.138 0.368 0.138 0.092 0.138 0.000 0.000 0.000 0.873 NW 0.000 0.184 0.184 0.184 0.000 0.414 0.000 0.000 0.000 0.965 NNW 0.000 0.230 0.460 0.414 0.092 0.184 0.000 0.000 0.000 1.379 SUBTOTAL 0.000 5.377 14.706 5.239 1.471 0.965 0.000 0.000 0.000 27.757 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS E 604 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 604 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 2.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-58

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.015 0.322 1.379 0.138 0.000 0.000 0.000 0.000 0.000 1.853 NNE 0.006 0.276 0.414 0.230 0.046 0.000 0.000 0.000 0.000 0.971 NE 0.007 0.414 0.322 0.046 0.000 0.000 0.000 0.000 0.000 0.788 ENE 0.012 0.643 0.689 0.138 0.000 0.000 0.000 0.000 0.000 1.483 E 0.011 0.506 0.735 0.184 0.000 0.000 0.000 0.000 0.000 1.436 ESE 0.010 0.184 0.919 0.046 0.000 0.046 0.000 0.000 0.000 1.205 SE 0.003 0.230 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.325 SSE 0.002 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.232 S 0.006 0.276 0.368 0.000 0.000 0.000 0.000 0.000 0.000 0.649 SSW 0.005 0.092 0.414 0.000 0.000 0.000 0.000 0.000 0.000 0.510 SW 0.003 0.092 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.371 WSW 0.002 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.232 W 0.002 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.278 WNW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NW 0.004 0.230 0.184 0.046 0.046 0.000 0.000 0.000 0.000 0.509 NNW 0.004 0.184 0.276 0.046 0.092 0.000 0.000 0.000 0.000 0.602 SUBTOTAL 0.092 3.906 6.342 0.919 0.184 0.046 0.000 0.000 0.000 11.489 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS F 250 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 250 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 2.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-59

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.012 1.103 0.689 0.414 0.000 0.000 0.000 0.000 0.000 2.218 NNE 0.005 0.506 0.276 0.184 0.000 0.000 0.000 0.000 0.000 0.970 NE 0.003 0.322 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.462 ENE 0.004 0.276 0.322 0.046 0.000 0.000 0.000 0.000 0.000 0.647 E 0.002 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.003 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.416 SE 0.001 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.004 0.322 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.555 SSW 0.001 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SW 0.001 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WNW 0.001 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NW 0.003 0.230 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.416 NNW 0.008 0.827 0.322 0.046 0.000 0.000 0.000 0.000 0.000 1.202 SUBTOTAL 0.046 4.550 2.436 0.735 0.000 0.000 0.000 0.000 0.000 7.767 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS G 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 1.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-60

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES THIRD QUARTER E-61

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.273 0.000 0.000 0.000 0.273 NNE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 ESE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 SE 0.000 0.000 0.045 0.227 0.000 0.000 0.000 0.000 0.000 0.273 SSE 0.000 0.000 0.591 0.136 0.000 0.000 0.000 0.000 0.000 0.727 S 0.000 0.000 0.318 0.000 0.000 0.000 0.000 0.000 0.000 0.318 SSW 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.045 0.045 0.091 0.000 0.000 0.000 0.000 0.182 W 0.000 0.000 0.000 0.182 0.182 0.000 0.000 0.000 0.000 0.364 WNW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.000 0.000 0.000 0.318 0.000 0.000 0.000 0.318 NNW 0.000 0.000 0.000 0.000 0.045 0.182 0.000 0.000 0.000 0.227 SUBTOTAL 0.000 0.000 1.136 0.636 0.364 0.864 0.000 0.000 0.000 3.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS A 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 5.30 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-62

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.182 0.318 0.000 0.000 0.000 0.500 NNE 0.000 0.000 0.000 0.000 0.045 0.364 0.000 0.000 0.000 0.409 NE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 SE 0.000 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.227 SSE 0.000 0.000 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.273 S 0.000 0.000 0.318 0.091 0.000 0.000 0.000 0.000 0.000 0.409 SSW 0.000 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.227 SW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.091 0.273 0.045 0.045 0.000 0.000 0.000 0.455 W 0.000 0.000 0.000 0.364 0.318 0.091 0.000 0.000 0.000 0.773 WNW 0.000 0.000 0.000 0.091 0.273 0.409 0.000 0.000 0.000 0.773 NW 0.000 0.000 0.000 0.000 0.136 0.364 0.000 0.000 0.000 0.500 NNW 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.000 0.182 SUBTOTAL 0.000 0.000 1.000 1.045 1.091 1.727 0.000 0.000 0.000 4.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS B 107 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 107 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 6.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-63

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.045 0.000 0.136 0.000 0.000 0.000 0.000 0.182 NNE 0.000 0.000 0.045 0.000 0.091 0.182 0.000 0.000 0.000 0.318 NE 0.000 0.000 0.000 0.000 0.136 0.227 0.000 0.000 0.000 0.364 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.091 0.000 0.091 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.409 0.182 0.000 0.000 0.000 0.000 0.000 0.591 SSE 0.000 0.000 0.909 0.045 0.000 0.000 0.000 0.000 0.000 0.955 S 0.000 0.000 0.591 0.045 0.000 0.000 0.000 0.000 0.000 0.636 SSW 0.000 0.000 0.364 0.091 0.000 0.000 0.000 0.000 0.000 0.455 SW 0.000 0.000 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.273 WSW 0.000 0.000 0.227 0.227 0.091 0.045 0.000 0.000 0.000 0.591 W 0.000 0.000 0.136 0.682 0.364 0.045 0.000 0.000 0.000 1.227 WNW 0.000 0.000 0.000 0.182 0.091 0.500 0.000 0.000 0.000 0.773 NW 0.000 0.000 0.000 0.182 0.091 0.136 0.000 0.000 0.000 0.409 NNW 0.000 0.000 0.045 0.045 0.045 0.091 0.000 0.000 0.000 0.227 SUBTOTAL 0.000 0.000 3.182 1.727 1.136 1.227 0.000 0.000 0.000 7.273 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 4.82 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-64

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.318 0.773 0.273 0.045 0.000 0.000 1.545 NNE 0.000 0.045 0.136 0.545 0.955 0.364 0.000 0.000 0.000 2.045 NE 0.000 0.045 0.136 0.682 1.091 1.091 0.000 0.000 0.000 3.045 ENE 0.000 0.045 0.273 0.500 0.182 0.136 0.000 0.000 0.000 1.136 E 0.000 0.000 0.545 0.591 0.591 0.000 0.000 0.000 0.000 1.727 ESE 0.000 0.091 0.955 0.636 0.409 0.091 0.000 0.000 0.000 2.182 SE 0.000 0.000 2.727 0.409 0.000 0.000 0.000 0.000 0.000 3.136 SSE 0.000 0.136 2.409 0.136 0.000 0.000 0.000 0.000 0.000 2.682 S 0.000 0.273 2.545 0.091 0.000 0.000 0.000 0.000 0.000 2.909 SSW 0.000 0.091 3.636 0.409 0.045 0.000 0.000 0.000 0.000 4.182 SW 0.000 0.091 1.864 0.273 0.000 0.000 0.000 0.000 0.000 2.227 WSW 0.000 0.091 2.273 0.545 0.045 0.000 0.000 0.000 0.000 2.955 W 0.000 0.000 1.455 1.545 0.727 0.273 0.045 0.000 0.000 4.045 WNW 0.000 0.000 0.318 0.409 0.727 0.409 0.136 0.000 0.000 2.000 NW 0.000 0.000 0.182 0.318 0.182 0.136 0.182 0.000 0.000 1.000 NNW 0.000 0.045 0.227 0.182 0.136 0.091 0.000 0.000 0.000 0.682 SUBTOTAL 0.000 0.955 19.818 7.591 5.864 2.864 0.409 0.000 0.000 37.500 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS D 825 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 825 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 4.04 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-65

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 1.091 0.500 0.091 0.182 0.091 0.000 0.000 1.955 NNE 0.000 0.045 0.773 1.500 0.955 0.455 0.000 0.000 0.000 3.727 NE 0.000 0.091 0.591 0.636 0.455 0.773 0.000 0.000 0.000 2.545 ENE 0.000 0.136 1.182 0.318 0.045 0.000 0.000 0.000 0.000 1.682 E 0.000 0.273 1.500 0.500 0.045 0.045 0.000 0.000 0.000 2.364 ESE 0.000 0.455 1.409 0.455 0.045 0.045 0.000 0.000 0.000 2.409 SE 0.000 0.545 0.364 0.000 0.000 0.000 0.000 0.000 0.000 0.909 SSE 0.000 0.545 0.682 0.000 0.000 0.000 0.000 0.000 0.000 1.227 S 0.000 0.727 0.955 0.045 0.000 0.000 0.000 0.000 0.000 1.727 SSW 0.000 0.273 0.773 0.000 0.000 0.000 0.000 0.000 0.000 1.045 SW 0.000 0.318 0.409 0.000 0.000 0.000 0.000 0.000 0.000 0.727 WSW 0.000 0.045 0.864 0.091 0.000 0.000 0.000 0.000 0.000 1.000 W 0.000 0.182 0.636 0.364 0.182 0.045 0.000 0.000 0.000 1.409 WNW 0.000 0.000 0.182 0.091 0.045 0.045 0.000 0.000 0.000 0.364 NW 0.000 0.045 0.182 0.091 0.000 0.136 0.000 0.000 0.000 0.455 NNW 0.000 0.136 0.500 0.273 0.136 0.045 0.000 0.000 0.000 1.091 SUBTOTAL 0.000 3.818 12.091 4.864 2.000 1.773 0.091 0.000 0.000 24.636 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS E 542 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 542 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 3.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-66

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.182 1.364 0.409 0.000 0.000 0.000 0.000 0.000 1.955 NNE 0.000 0.318 1.455 1.364 0.182 0.000 0.000 0.000 0.000 3.318 NE 0.000 0.455 0.591 0.318 0.045 0.000 0.000 0.000 0.000 1.409 ENE 0.000 0.409 1.455 0.455 0.091 0.000 0.000 0.000 0.000 2.409 E 0.000 0.136 1.455 0.409 0.000 0.000 0.000 0.000 0.000 2.000 ESE 0.000 0.136 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.318 SE 0.000 0.227 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.455 SSE 0.000 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.273 S 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.227 SSW 0.000 0.182 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.227 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.136 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.136 NW 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 NNW 0.000 0.273 0.364 0.045 0.000 0.000 0.000 0.000 0.000 0.682 SUBTOTAL 0.000 2.955 7.455 3.000 0.318 0.000 0.000 0.000 0.000 13.727 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS F 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 2.59 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-67

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 1.364 0.955 0.318 0.000 0.000 0.000 0.000 0.000 2.636 NNE 0.000 0.682 0.909 0.318 0.000 0.000 0.000 0.000 0.000 1.909 NE 0.000 0.545 0.682 0.000 0.000 0.000 0.000 0.000 0.000 1.227 ENE 0.000 0.182 0.773 0.000 0.000 0.000 0.000 0.000 0.000 0.955 E 0.000 0.182 0.318 0.000 0.000 0.000 0.000 0.000 0.000 0.500 ESE 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 SSE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.136 NNW 0.000 1.136 0.091 0.000 0.000 0.000 0.000 0.000 0.000 1.227 SUBTOTAL 0.000 4.500 3.864 0.636 0.000 0.000 0.000 0.000 0.000 9.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS G 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 1.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-68

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 7D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FOURTH QUARTER E-69

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.655 0.000 0.000 0.000 0.701 NNE 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.187 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.187 0.047 0.000 0.000 0.000 0.281 SE 0.000 0.000 0.234 0.327 0.000 0.000 0.000 0.000 0.000 0.561 SSE 0.000 0.000 0.795 0.327 0.000 0.000 0.000 0.000 0.000 1.122 S 0.000 0.000 0.374 0.281 0.000 0.000 0.000 0.000 0.000 0.655 SSW 0.000 0.000 0.094 0.234 0.047 0.000 0.000 0.000 0.000 0.374 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NNW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 SUBTOTAL 0.000 0.000 1.496 1.216 0.327 1.029 0.000 0.000 0.000 4.067 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS A 88 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 87 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-70

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.187 0.000 0.000 0.000 0.234 NNE 0.000 0.000 0.000 0.000 0.140 0.281 0.000 0.000 0.000 0.421 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.234 0.000 0.000 0.000 0.000 0.281 SE 0.000 0.000 0.140 0.281 0.000 0.000 0.000 0.000 0.000 0.421 SSE 0.000 0.047 0.234 0.094 0.000 0.000 0.000 0.000 0.000 0.374 S 0.000 0.000 0.094 0.140 0.000 0.000 0.000 0.000 0.000 0.234 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.281 0.047 0.000 0.000 0.327 NW 0.000 0.000 0.000 0.000 0.000 0.187 0.047 0.000 0.000 0.234 NNW 0.000 0.000 0.000 0.047 0.094 0.047 0.000 0.000 0.000 0.187 SUBTOTAL 0.000 0.047 0.468 0.655 0.514 0.982 0.094 0.000 0.000 2.758 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS B 61 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 59 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 6.64 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-71

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.047 0.000 0.234 0.047 0.000 0.000 0.000 0.327 NNE 0.000 0.000 0.047 0.000 0.187 0.094 0.000 0.000 0.000 0.327 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.140 0.094 0.000 0.000 0.000 0.281 SE 0.000 0.047 0.187 0.281 0.047 0.000 0.000 0.000 0.000 0.561 SSE 0.000 0.000 0.281 0.187 0.000 0.000 0.000 0.000 0.000 0.468 S 0.000 0.000 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SSW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 SW 0.000 0.000 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.140 WSW 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.140 W 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.000 0.000 0.094 0.094 0.047 0.000 0.000 0.234 NW 0.000 0.000 0.000 0.000 0.047 0.047 0.140 0.000 0.000 0.234 NNW 0.000 0.000 0.000 0.000 0.094 0.187 0.000 0.000 0.000 0.281 SUBTOTAL 0.000 0.047 0.935 0.655 0.888 0.655 0.187 0.000 0.000 3.366 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS C 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.99 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-72

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.047 0.187 0.842 1.683 0.374 0.000 0.000 0.000 3.132 NNE 0.000 0.000 0.281 0.748 1.496 0.327 0.000 0.000 0.000 2.852 NE 0.000 0.000 0.234 0.842 0.374 0.094 0.000 0.000 0.000 1.543 ENE 0.000 0.000 0.234 0.140 0.094 0.327 0.000 0.000 0.000 0.795 E 0.000 0.140 0.187 0.234 0.234 0.000 0.000 0.000 0.000 0.795 ESE 0.000 0.094 0.701 0.608 0.608 0.187 0.000 0.000 0.000 2.197 SE 0.000 0.187 1.636 0.655 0.000 0.000 0.000 0.000 0.000 2.478 SSE 0.000 0.094 1.543 0.281 0.000 0.000 0.000 0.000 0.000 1.917 S 0.000 0.140 1.169 0.327 0.140 0.000 0.000 0.000 0.000 1.777 SSW 0.000 0.094 0.701 0.094 0.047 0.000 0.000 0.000 0.000 0.935 SW 0.000 0.094 0.468 0.140 0.000 0.000 0.000 0.000 0.000 0.701 WSW 0.000 0.047 0.842 0.468 0.094 0.047 0.000 0.000 0.000 1.496 W 0.000 0.000 0.748 0.795 0.468 0.421 0.000 0.000 0.000 2.431 WNW 0.000 0.047 0.374 0.608 0.748 1.122 0.187 0.094 0.047 3.226 NW 0.000 0.000 0.047 0.514 0.608 0.982 0.561 0.094 0.000 2.805 NNW 0.000 0.000 0.140 0.514 1.356 1.777 0.140 0.000 0.000 3.927 SUBTOTAL 0.000 0.982 9.490 7.807 7.948 5.657 0.888 0.187 0.047 33.006 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS D 714 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 706 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 5.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-73

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.005 0.281 0.748 0.982 0.187 0.234 0.000 0.000 0.000 2.436 NNE 0.003 0.094 0.468 0.655 0.701 0.000 0.000 0.000 0.000 1.920 NE 0.001 0.000 0.140 0.421 0.327 0.000 0.000 0.000 0.000 0.889 ENE 0.002 0.094 0.281 0.094 0.000 0.000 0.000 0.000 0.000 0.469 E 0.008 0.327 1.216 0.935 0.140 0.000 0.000 0.000 0.000 2.626 ESE 0.015 0.468 2.525 1.823 0.234 0.000 0.000 0.000 0.000 5.065 SE 0.010 0.701 1.216 0.281 0.000 0.000 0.000 0.000 0.000 2.207 SSE 0.016 0.748 2.338 0.234 0.000 0.000 0.000 0.000 0.000 3.335 S 0.013 0.234 2.291 1.029 0.468 0.140 0.000 0.000 0.000 4.174 SSW 0.005 0.327 0.561 0.140 0.047 0.094 0.000 0.000 0.000 1.173 SW 0.003 0.234 0.281 0.047 0.000 0.000 0.000 0.000 0.000 0.564 WSW 0.002 0.094 0.327 0.094 0.000 0.000 0.000 0.000 0.000 0.516 W 0.003 0.094 0.514 0.842 0.374 0.094 0.000 0.000 0.000 1.920 WNW 0.002 0.140 0.187 0.140 0.140 0.000 0.047 0.000 0.000 0.656 NW 0.001 0.094 0.094 0.234 0.140 0.561 0.047 0.000 0.000 1.170 NNW 0.005 0.187 0.795 1.029 0.701 0.561 0.000 0.000 0.000 3.278 SUBTOTAL 0.094 4.114 13.978 8.976 3.460 1.683 0.094 0.000 0.000 32.398 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS E 713 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 693 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 3.58 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-74

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.005 0.047 1.262 0.561 0.000 0.000 0.000 0.000 0.000 1.875 NNE 0.002 0.140 0.421 0.421 0.047 0.000 0.000 0.000 0.000 1.031 NE 0.001 0.094 0.187 0.094 0.000 0.000 0.000 0.000 0.000 0.375 ENE 0.003 0.234 0.514 0.140 0.000 0.000 0.000 0.000 0.000 0.891 E 0.008 0.421 1.590 0.795 0.000 0.000 0.000 0.000 0.000 2.813 ESE 0.007 0.421 1.309 0.187 0.000 0.000 0.000 0.000 0.000 1.924 SE 0.003 0.327 0.421 0.000 0.000 0.000 0.000 0.000 0.000 0.751 SSE 0.006 0.608 0.982 0.000 0.000 0.000 0.000 0.000 0.000 1.596 S 0.002 0.094 0.468 0.187 0.234 0.094 0.000 0.000 0.000 1.078 SSW 0.002 0.187 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.376 SW 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WSW 0.001 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.141 W 0.001 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.141 WNW 0.001 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.141 NW 0.001 0.047 0.281 0.047 0.000 0.000 0.000 0.000 0.000 0.375 NNW 0.003 0.047 0.701 0.374 0.094 0.000 0.000 0.000 0.000 1.219 SUBTOTAL 0.047 2.945 8.555 2.805 0.374 0.094 0.000 0.000 0.000 14.820 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS F 326 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 317 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 2.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-75

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.055 0.561 1.496 0.327 0.000 0.000 0.000 0.000 0.000 2.440 NNE 0.026 0.561 0.421 0.047 0.000 0.000 0.000 0.000 0.000 1.055 NE 0.020 0.234 0.514 0.000 0.000 0.000 0.000 0.000 0.000 0.768 ENE 0.034 0.281 0.982 0.047 0.000 0.000 0.000 0.000 0.000 1.343 E 0.028 0.374 0.655 0.047 0.000 0.000 0.000 0.000 0.000 1.103 ESE 0.008 0.047 0.234 0.000 0.000 0.000 0.000 0.000 0.000 0.288 SE 0.006 0.047 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.240 SSE 0.005 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.192 S 0.003 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.096 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.001 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.048 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.003 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 WNW 0.003 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.096 NW 0.006 0.140 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.240 NNW 0.036 0.514 0.842 0.187 0.000 0.000 0.000 0.000 0.000 1.579 SUBTOTAL 0.234 3.179 5.517 0.655 0.000 0.000 0.000 0.000 0.000 9.584 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS G 223 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 205 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2139 TOTAL HOURS CALM 5 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 2.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-76

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FIRST QUARTER E-77

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.092 0.031 0.000 0.000 0.123 NNE 0.000 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.043 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.000 0.007 0.052 0.026 0.000 0.000 0.000 0.000 0.084 SSE 0.000 0.000 0.008 0.029 0.000 0.000 0.000 0.000 0.000 0.038 S 0.000 0.000 0.026 0.069 0.000 0.000 0.000 0.000 0.000 0.095 SSW 0.000 0.000 0.001 0.017 0.000 0.000 0.000 0.000 0.000 0.019 SW 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 WSW 0.000 0.000 0.000 0.000 0.005 0.034 0.000 0.000 0.000 0.039 W 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 WNW 0.000 0.000 0.000 0.000 0.000 0.008 0.018 0.000 0.000 0.026 NW 0.000 0.000 0.000 0.000 0.000 0.023 0.018 0.000 0.000 0.041 NNW 0.000 0.000 0.000 0.000 0.000 0.090 0.036 0.000 0.000 0.126 SUBTOTAL 0.000 0.000 0.043 0.173 0.036 0.298 0.103 0.000 0.000 0.652 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS A 24.760 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 14.060 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-78

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.077 0.000 0.000 0.000 0.077 NNE 0.000 0.000 0.000 0.000 0.013 0.017 0.000 0.000 0.000 0.030 NE 0.000 0.000 0.000 0.000 0.005 0.014 0.000 0.000 0.000 0.019 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.000 0.004 0.029 0.009 0.000 0.000 0.000 0.000 0.042 SSE 0.000 0.000 0.008 0.010 0.000 0.000 0.000 0.000 0.000 0.018 S 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 SSW 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.006 0.009 0.000 0.000 0.000 0.015 WNW 0.000 0.000 0.000 0.000 0.000 0.059 0.051 0.000 0.000 0.110 NW 0.000 0.000 0.000 0.000 0.000 0.051 0.027 0.000 0.000 0.078 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.018 0.000 0.000 0.063 SUBTOTAL 0.000 0.000 0.012 0.058 0.045 0.273 0.095 0.000 0.000 0.484 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS B 25.950 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 10.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-79

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.006 0.024 0.000 0.000 0.000 0.030 NNE 0.000 0.000 0.000 0.000 0.008 0.022 0.000 0.000 0.000 0.031 NE 0.000 0.000 0.000 0.000 0.003 0.005 0.000 0.000 0.000 0.008 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 SE 0.000 0.000 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.010 SSE 0.000 0.000 0.000 0.015 0.000 0.000 0.000 0.000 0.000 0.015 S 0.000 0.000 0.012 0.008 0.040 0.000 0.000 0.000 0.000 0.061 SSW 0.000 0.000 0.006 0.014 0.000 0.000 0.000 0.000 0.000 0.020 SW 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.004 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.009 0.053 0.047 0.000 0.000 0.110 NW 0.000 0.000 0.000 0.000 0.006 0.042 0.019 0.000 0.000 0.067 NNW 0.000 0.000 0.000 0.000 0.008 0.017 0.000 0.000 0.000 0.025 SUBTOTAL 0.000 0.000 0.022 0.048 0.091 0.163 0.066 0.000 0.000 0.391 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS C 76.080 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-80

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.020 0.141 0.182 0.000 0.000 0.000 0.343 NNE 0.000 0.000 0.000 0.026 0.161 0.065 0.000 0.000 0.000 0.252 NE 0.000 0.000 0.000 0.005 0.030 0.079 0.000 0.000 0.000 0.114 ENE 0.000 0.000 0.002 0.000 0.005 0.000 0.000 0.000 0.000 0.007 E 0.000 0.000 0.002 0.007 0.004 0.000 0.000 0.000 0.000 0.013 ESE 0.000 0.000 0.014 0.098 0.018 0.000 0.000 0.000 0.000 0.131 SE 0.000 0.000 0.063 0.058 0.008 0.000 0.000 0.000 0.000 0.129 SSE 0.000 0.000 0.072 0.142 0.000 0.000 0.000 0.000 0.000 0.214 S 0.000 0.000 0.105 0.159 0.140 0.226 0.000 0.000 0.000 0.630 SSW 0.000 0.000 0.013 0.103 0.040 0.000 0.000 0.000 0.000 0.156 SW 0.000 0.000 0.007 0.017 0.000 0.000 0.000 0.000 0.000 0.025 WSW 0.000 0.000 0.008 0.028 0.026 0.027 0.000 0.000 0.000 0.090 W 0.000 0.000 0.001 0.054 0.098 0.084 0.000 0.000 0.000 0.237 WNW 0.000 0.000 0.000 0.008 0.037 0.170 0.142 0.000 0.000 0.357 NW 0.000 0.000 0.000 0.003 0.054 0.236 0.560 0.246 0.000 1.099 NNW 0.000 0.000 0.000 0.011 0.077 0.252 0.303 0.000 0.000 0.643 SUBTOTAL 0.000 0.000 0.289 0.740 0.839 1.322 1.005 0.246 0.000 4.440 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS D 781.080 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 95.690 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-81

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.014 0.089 0.039 0.025 0.000 0.000 0.000 0.167 NNE 0.000 0.000 0.007 0.069 0.164 0.017 0.000 0.000 0.000 0.258 NE 0.000 0.000 0.011 0.052 0.047 0.023 0.000 0.000 0.000 0.133 ENE 0.000 0.000 0.010 0.038 0.007 0.000 0.000 0.000 0.000 0.055 E 0.000 0.000 0.076 0.052 0.000 0.000 0.000 0.000 0.000 0.127 ESE 0.000 0.000 0.145 0.185 0.062 0.009 0.000 0.000 0.000 0.401 SE 0.000 0.007 0.139 0.119 0.058 0.000 0.000 0.000 0.000 0.323 SSE 0.000 0.026 0.289 0.284 0.044 0.000 0.000 0.000 0.000 0.643 S 0.000 0.002 0.320 0.560 1.062 0.422 0.000 0.000 0.000 2.366 SSW 0.000 0.001 0.040 0.126 0.285 0.000 0.000 0.000 0.000 0.452 SW 0.000 0.000 0.031 0.026 0.000 0.000 0.000 0.000 0.000 0.056 WSW 0.000 0.000 0.036 0.036 0.000 0.000 0.000 0.000 0.000 0.072 W 0.000 0.000 0.007 0.038 0.013 0.021 0.000 0.000 0.000 0.078 WNW 0.000 0.000 0.002 0.024 0.034 0.000 0.000 0.000 0.000 0.060 NW 0.000 0.000 0.001 0.015 0.024 0.057 0.120 0.000 0.000 0.217 NNW 0.000 0.000 0.009 0.060 0.149 0.133 0.010 0.000 0.000 0.361 SUBTOTAL 0.000 0.037 1.136 1.770 1.987 0.708 0.130 0.000 0.000 5.768 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS E 911.560 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 124.300 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-82

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.059 0.077 0.000 0.000 0.000 0.000 0.000 0.135 NNE 0.000 0.000 0.001 0.050 0.015 0.000 0.000 0.000 0.000 0.066 NE 0.000 0.000 0.006 0.011 0.000 0.000 0.000 0.000 0.000 0.018 ENE 0.000 0.000 0.021 0.012 0.000 0.000 0.000 0.000 0.000 0.033 E 0.000 0.002 0.074 0.005 0.000 0.000 0.000 0.000 0.000 0.080 ESE 0.000 0.008 0.082 0.006 0.000 0.000 0.000 0.000 0.000 0.097 SE 0.000 0.019 0.078 0.058 0.000 0.000 0.000 0.000 0.000 0.155 SSE 0.000 0.067 0.150 0.000 0.000 0.000 0.000 0.000 0.000 0.217 S 0.000 0.021 0.213 0.403 0.375 0.088 0.000 0.000 0.000 1.100 SSW 0.000 0.006 0.062 0.095 0.030 0.000 0.000 0.000 0.000 0.193 SW 0.000 0.000 0.023 0.008 0.000 0.000 0.000 0.000 0.000 0.031 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 NW 0.000 0.000 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.010 NNW 0.000 0.000 0.007 0.058 0.016 0.009 0.000 0.000 0.000 0.090 SUBTOTAL 0.000 0.124 0.783 0.788 0.436 0.097 0.000 0.000 0.000 2.228 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS F 286.670 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 48.010 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-83

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.001 0.007 0.008 0.000 0.000 0.000 0.000 0.000 0.016 NNE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NE 0.000 0.002 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.006 ENE 0.000 0.003 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.006 E 0.000 0.009 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.017 ESE 0.000 0.011 0.015 0.000 0.000 0.000 0.000 0.000 0.000 0.026 SE 0.000 0.040 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.055 SSE 0.000 0.130 0.220 0.000 0.000 0.000 0.000 0.000 0.000 0.351 S 0.000 0.041 0.401 0.183 0.000 0.000 0.000 0.000 0.000 0.625 SSW 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.005 NNW 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 SUBTOTAL 0.000 0.238 0.678 0.206 0.000 0.000 0.000 0.000 0.000 1.123 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF GROUND LEVEL RELEASE 325.090 TOTAL HOURS OF STABILITY CLASS G 48.900 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 24.190 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-84

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.045 0.041 0.000 0.000 0.000 0.086 SSE 0.000 0.000 0.000 0.000 0.045 0.082 0.000 0.000 0.000 0.127 S 0.000 0.000 0.000 0.000 0.045 0.039 0.116 0.000 0.000 0.199 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.046 0.000 0.135 0.161 0.154 0.000 0.000 0.497 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS A 24.760 TOTAL HOURS OF ELEVATED STABILITY CLASS A 10.700 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-85

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.039 0.264 0.000 0.000 0.303 NNE 0.000 0.000 0.000 0.000 0.000 0.039 0.039 0.000 0.000 0.078 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SE 0.000 0.000 0.000 0.000 0.044 0.043 0.000 0.000 0.000 0.086 SSE 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.000 0.039 S 0.000 0.000 0.000 0.000 0.045 0.081 0.000 0.000 0.000 0.127 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.089 0.283 0.302 0.000 0.000 0.721 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS B 25.950 TOTAL HOURS OF ELEVATED STABILITY CLASS B 15.530 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-86

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.196 0.419 0.025 0.000 0.686 NNE 0.000 0.000 0.000 0.000 0.000 0.161 0.115 0.000 0.000 0.275 NE 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.044 0.043 0.000 0.000 0.000 0.087 SE 0.000 0.000 0.000 0.093 0.046 0.204 0.150 0.000 0.000 0.492 SSE 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.000 0.043 S 0.000 0.000 0.000 0.000 0.000 0.000 0.077 0.000 0.000 0.077 SSW 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.044 0.039 0.037 0.000 0.000 0.121 WSW 0.000 0.000 0.000 0.000 0.000 0.082 0.114 0.000 0.000 0.196 W 0.000 0.000 0.000 0.000 0.000 0.000 0.076 0.000 0.000 0.076 WNW 0.000 0.000 0.000 0.000 0.000 0.039 0.190 0.000 0.000 0.229 NW 0.000 0.000 0.000 0.000 0.000 0.039 0.151 0.000 0.000 0.191 NNW 0.000 0.000 0.000 0.000 0.000 0.039 0.454 0.000 0.000 0.493 SUBTOTAL 0.000 0.000 0.046 0.186 0.177 0.924 1.782 0.025 0.000 3.140 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS C 76.080 TOTAL HOURS OF ELEVATED STABILITY CLASS C 67.660 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-87

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.093 0.232 0.178 1.162 1.247 0.097 0.000 3.056 NNE 0.000 0.000 0.139 0.186 0.357 1.701 0.267 0.000 0.000 2.650 NE 0.000 0.000 0.232 0.046 0.351 0.605 0.000 0.000 0.000 1.235 ENE 0.000 0.000 0.000 0.186 0.181 0.124 0.000 0.000 0.000 0.490 E 0.000 0.000 0.046 0.046 0.045 0.000 0.000 0.000 0.000 0.137 ESE 0.000 0.000 0.000 0.046 0.354 0.533 0.038 0.000 0.000 0.971 SE 0.000 0.000 0.186 0.510 0.534 0.611 0.340 0.068 0.000 2.249 SSE 0.000 0.000 0.186 0.093 0.090 0.644 0.640 0.094 0.000 1.746 S 0.000 0.000 0.139 0.325 0.220 0.328 0.343 0.249 0.032 1.636 SSW 0.000 0.000 0.139 0.186 0.136 1.018 0.604 0.042 0.000 2.124 SW 0.000 0.000 0.418 0.557 0.088 0.369 0.038 0.000 0.000 1.470 WSW 0.000 0.000 0.186 0.232 0.316 0.779 0.075 0.000 0.000 1.587 W 0.000 0.000 0.278 0.232 0.361 1.055 0.230 0.000 0.000 2.156 WNW 0.000 0.000 0.093 0.371 0.358 1.243 1.130 0.381 0.000 3.577 NW 0.000 0.000 0.000 0.510 0.355 1.054 1.468 0.527 0.019 3.934 NNW 0.000 0.000 0.093 0.186 0.266 0.858 1.161 0.226 0.000 2.788 SUBTOTAL 0.000 0.046 2.227 3.944 4.188 12.082 7.581 1.685 0.051 31.805 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS D 781.080 TOTAL HOURS OF ELEVATED STABILITY CLASS D 685.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-88

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.093 0.000 0.670 0.884 0.380 0.000 0.000 2.026 NNE 0.000 0.000 0.046 0.093 0.400 1.381 0.384 0.000 0.000 2.304 NE 0.000 0.000 0.139 0.046 0.179 0.901 0.039 0.000 0.000 1.304 ENE 0.000 0.000 0.046 0.278 0.090 0.284 0.039 0.000 0.000 0.738 E 0.000 0.000 0.139 0.139 0.313 0.458 0.000 0.000 0.000 1.049 ESE 0.000 0.000 0.046 0.139 0.927 1.645 0.268 0.000 0.000 3.025 SE 0.000 0.000 0.232 0.418 0.484 1.465 1.060 0.276 0.011 3.945 SSE 0.000 0.000 0.139 0.232 0.361 1.096 0.975 0.575 0.030 3.409 S 0.000 0.046 0.046 0.139 0.763 1.377 1.837 1.148 0.090 5.447 SSW 0.000 0.000 0.093 0.186 0.492 1.252 1.805 0.629 0.005 4.462 SW 0.000 0.000 0.139 0.325 0.497 1.028 0.455 0.000 0.000 2.444 WSW 0.000 0.000 0.000 0.186 0.406 0.367 0.000 0.033 0.000 0.992 W 0.000 0.000 0.139 0.232 0.408 0.528 0.039 0.000 0.000 1.345 WNW 0.000 0.000 0.093 0.139 0.222 0.289 0.076 0.000 0.000 0.819 NW 0.000 0.000 0.139 0.046 0.089 0.603 0.419 0.000 0.000 1.297 NNW 0.000 0.000 0.046 0.046 0.355 0.969 0.454 0.056 0.000 1.926 SUBTOTAL 0.000 0.046 1.578 2.645 6.657 14.525 8.229 2.716 0.136 36.532 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS E 911.560 TOTAL HOURS OF ELEVATED STABILITY CLASS E 787.260 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-89

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.044 0.326 0.039 0.000 0.000 0.408 NNE 0.000 0.000 0.000 0.046 0.227 0.125 0.000 0.000 0.000 0.399 NE 0.000 0.000 0.000 0.186 0.090 0.123 0.000 0.000 0.000 0.399 ENE 0.000 0.000 0.046 0.093 0.176 0.247 0.000 0.000 0.000 0.563 E 0.000 0.000 0.046 0.046 0.133 0.250 0.000 0.000 0.000 0.476 ESE 0.000 0.046 0.046 0.139 0.308 0.251 0.000 0.000 0.000 0.790 SE 0.000 0.000 0.093 0.139 0.222 1.140 0.038 0.078 0.000 1.710 SSE 0.000 0.000 0.046 0.093 0.043 0.764 0.942 0.183 0.000 2.072 S 0.000 0.000 0.139 0.000 0.178 0.875 1.136 0.191 0.000 2.520 SSW 0.000 0.046 0.093 0.000 0.131 0.241 0.077 0.000 0.000 0.588 SW 0.000 0.000 0.046 0.046 0.090 0.292 0.000 0.000 0.000 0.475 WSW 0.000 0.046 0.046 0.093 0.090 0.000 0.000 0.000 0.000 0.276 W 0.000 0.000 0.046 0.046 0.045 0.000 0.000 0.000 0.000 0.137 WNW 0.000 0.000 0.046 0.000 0.000 0.042 0.000 0.000 0.000 0.088 NW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NNW 0.000 0.000 0.000 0.000 0.000 0.080 0.000 0.000 0.000 0.080 SUBTOTAL 0.000 0.186 0.742 0.928 1.777 4.757 2.232 0.452 0.000 11.075 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS F 286.670 TOTAL HOURS OF ELEVATED STABILITY CLASS F 238.660 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-90

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.046 0.044 0.000 0.000 0.000 0.000 0.090 ESE 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.000 0.139 0.264 0.000 0.000 0.000 0.000 0.403 SSE 0.000 0.000 0.000 0.000 0.176 0.000 0.075 0.097 0.000 0.348 S 0.000 0.000 0.000 0.000 0.000 0.080 0.000 0.000 0.000 0.080 SSW 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.278 0.575 0.121 0.075 0.097 0.000 1.147 TOTAL HOURS OF VALID OBSERVATIONS 2155.000 TOTAL HOURS OF ELEVATED RELEASES 1829.910 TOTAL HOURS OF STABILITY CLASS G 48.900 TOTAL HOURS OF ELEVATED STABILITY CLASS G 24.710 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/05/05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-91

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

SECOND QUARTER E-92

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NNE 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.036 0.000 0.000 0.000 0.000 0.036 SE 0.000 0.000 0.038 0.018 0.000 0.000 0.000 0.000 0.000 0.056 SSE 0.000 0.000 0.048 0.033 0.000 0.000 0.000 0.000 0.000 0.081 S 0.000 0.000 0.112 0.045 0.000 0.000 0.000 0.000 0.000 0.157 SSW 0.000 0.000 0.036 0.089 0.000 0.000 0.000 0.000 0.000 0.125 SW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.000 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.011 W 0.000 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.044 WNW 0.000 0.000 0.000 0.000 0.000 0.027 0.026 0.000 0.000 0.053 NW 0.000 0.000 0.000 0.000 0.000 0.006 0.009 0.000 0.000 0.015 NNW 0.000 0.000 0.000 0.000 0.000 0.029 0.000 0.000 0.000 0.029 SUBTOTAL 0.000 0.000 0.234 0.197 0.036 0.123 0.035 0.000 0.000 0.626 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS A 16.790 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 13.620 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-93

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.004 0.024 0.000 0.000 0.000 0.028 NNE 0.000 0.000 0.000 0.000 0.000 0.024 0.000 0.000 0.000 0.024 NE 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SE 0.000 0.000 0.020 0.021 0.000 0.000 0.000 0.000 0.000 0.040 SSE 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 S 0.000 0.000 0.033 0.016 0.000 0.000 0.000 0.000 0.000 0.049 SSW 0.000 0.000 0.023 0.016 0.000 0.000 0.000 0.000 0.000 0.040 SW 0.000 0.000 0.009 0.001 0.018 0.000 0.000 0.000 0.000 0.028 WSW 0.000 0.000 0.001 0.007 0.000 0.023 0.000 0.000 0.000 0.032 W 0.000 0.000 0.000 0.004 0.003 0.020 0.000 0.000 0.000 0.027 WNW 0.000 0.000 0.000 0.000 0.006 0.026 0.027 0.000 0.000 0.058 NW 0.000 0.000 0.000 0.003 0.008 0.029 0.063 0.000 0.000 0.103 NNW 0.000 0.000 0.000 0.000 0.006 0.018 0.000 0.000 0.000 0.024 SUBTOTAL 0.000 0.000 0.090 0.084 0.044 0.175 0.090 0.000 0.000 0.483 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS B 28.890 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 10.500 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-94

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.001 0.010 0.029 0.000 0.000 0.000 0.040 NNE 0.000 0.000 0.000 0.002 0.018 0.006 0.000 0.000 0.000 0.027 NE 0.000 0.000 0.000 0.000 0.000 0.006 0.010 0.000 0.000 0.015 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SE 0.000 0.000 0.005 0.011 0.000 0.000 0.000 0.000 0.000 0.016 SSE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 S 0.000 0.000 0.028 0.000 0.000 0.000 0.000 0.000 0.000 0.028 SSW 0.000 0.000 0.008 0.047 0.000 0.000 0.000 0.000 0.000 0.055 SW 0.000 0.000 0.017 0.010 0.000 0.000 0.000 0.000 0.000 0.027 WSW 0.000 0.000 0.002 0.006 0.000 0.023 0.000 0.000 0.000 0.030 W 0.000 0.000 0.000 0.016 0.017 0.042 0.000 0.000 0.000 0.074 WNW 0.000 0.000 0.000 0.000 0.009 0.028 0.018 0.068 0.000 0.123 NW 0.000 0.000 0.000 0.002 0.009 0.031 0.008 0.038 0.000 0.088 NNW 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 SUBTOTAL 0.000 0.000 0.068 0.108 0.063 0.173 0.036 0.106 0.000 0.554 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS C 109.390 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 12.050 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-95

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.001 0.011 0.037 0.017 0.000 0.000 0.000 0.067 NNE 0.000 0.000 0.000 0.027 0.064 0.109 0.000 0.000 0.000 0.200 NE 0.000 0.000 0.000 0.006 0.029 0.058 0.009 0.000 0.000 0.103 ENE 0.000 0.000 0.000 0.004 0.010 0.008 0.000 0.000 0.000 0.021 E 0.000 0.000 0.008 0.008 0.008 0.000 0.000 0.000 0.000 0.023 ESE 0.000 0.000 0.062 0.135 0.083 0.018 0.000 0.000 0.000 0.298 SE 0.000 0.005 0.112 0.080 0.000 0.046 0.000 0.000 0.000 0.243 SSE 0.000 0.000 0.181 0.035 0.000 0.000 0.000 0.000 0.000 0.216 S 0.000 0.001 0.197 0.091 0.000 0.000 0.000 0.000 0.000 0.288 SSW 0.000 0.001 0.086 0.221 0.031 0.000 0.000 0.000 0.000 0.339 SW 0.000 0.000 0.040 0.017 0.009 0.000 0.000 0.000 0.000 0.066 WSW 0.000 0.000 0.019 0.034 0.007 0.008 0.000 0.000 0.000 0.069 W 0.000 0.000 0.014 0.125 0.156 0.165 0.335 0.000 0.000 0.794 WNW 0.000 0.000 0.000 0.014 0.024 0.096 0.111 0.125 0.000 0.370 NW 0.000 0.000 0.000 0.004 0.048 0.115 0.070 0.000 0.000 0.237 NNW 0.000 0.000 0.002 0.011 0.077 0.072 0.018 0.000 0.000 0.180 SUBTOTAL 0.000 0.007 0.721 0.823 0.585 0.712 0.544 0.125 0.000 3.515 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS D 1051.290 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 76.490 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-96

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.043 0.046 0.015 0.000 0.000 0.000 0.000 0.104 NNE 0.000 0.000 0.019 0.098 0.050 0.017 0.000 0.000 0.000 0.184 NE 0.000 0.000 0.011 0.008 0.032 0.015 0.000 0.000 0.000 0.066 ENE 0.000 0.002 0.011 0.003 0.000 0.000 0.000 0.000 0.000 0.016 E 0.000 0.007 0.109 0.043 0.000 0.000 0.000 0.000 0.000 0.159 ESE 0.000 0.011 0.130 0.068 0.025 0.000 0.000 0.000 0.000 0.233 SE 0.000 0.009 0.109 0.007 0.000 0.000 0.000 0.000 0.000 0.125 SSE 0.000 0.021 0.078 0.000 0.000 0.000 0.000 0.000 0.000 0.098 S 0.000 0.018 0.189 0.227 0.000 0.000 0.000 0.000 0.000 0.434 SSW 0.000 0.023 0.240 0.240 0.044 0.000 0.000 0.000 0.000 0.547 SW 0.000 0.020 0.102 0.006 0.009 0.000 0.000 0.000 0.000 0.138 WSW 0.000 0.000 0.025 0.007 0.014 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.025 0.069 0.036 0.007 0.000 0.000 0.000 0.137 WNW 0.000 0.009 0.009 0.009 0.010 0.023 0.000 0.000 0.000 0.059 NW 0.000 0.000 0.005 0.004 0.000 0.074 0.000 0.000 0.000 0.082 NNW 0.000 0.001 0.016 0.042 0.012 0.033 0.000 0.000 0.000 0.105 SUBTOTAL 0.000 0.121 1.120 0.875 0.248 0.168 0.000 0.000 0.000 2.533 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS E 649.510 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 55.120 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-97

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.019 0.119 0.017 0.000 0.000 0.000 0.000 0.000 0.156 NNE 0.000 0.010 0.015 0.030 0.007 0.000 0.000 0.000 0.000 0.063 NE 0.000 0.031 0.010 0.007 0.000 0.000 0.000 0.000 0.000 0.048 ENE 0.000 0.039 0.050 0.016 0.000 0.000 0.000 0.000 0.000 0.105 E 0.000 0.033 0.051 0.013 0.000 0.000 0.000 0.000 0.000 0.097 ESE 0.000 0.013 0.081 0.006 0.000 0.031 0.000 0.000 0.000 0.131 SE 0.000 0.020 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.034 SSE 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.011 S 0.000 0.025 0.066 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSW 0.000 0.015 0.075 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.006 0.054 0.000 0.000 0.000 0.000 0.000 0.000 0.060 WSW 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.009 W 0.000 0.017 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.022 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.008 0.009 0.006 0.007 0.000 0.000 0.000 0.000 0.031 NNW 0.000 0.000 0.012 0.006 0.016 0.000 0.000 0.000 0.000 0.034 SUBTOTAL 0.002 0.246 0.571 0.101 0.030 0.031 0.000 0.000 0.000 0.980 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS F 241.450 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 21.330 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-98

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.014 0.038 0.052 0.000 0.000 0.000 0.000 0.000 0.104 NNE 0.000 0.000 0.008 0.022 0.000 0.000 0.000 0.000 0.000 0.030 NE 0.000 0.037 0.004 0.006 0.000 0.000 0.000 0.000 0.000 0.047 ENE 0.000 0.018 0.010 0.006 0.000 0.000 0.000 0.000 0.000 0.034 E 0.000 0.013 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.021 ESE 0.000 0.032 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.041 SE 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.011 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.043 0.028 0.000 0.000 0.000 0.000 0.000 0.000 0.071 SSW 0.000 0.021 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.021 SW 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.006 0.005 0.007 0.000 0.000 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.199 0.112 0.094 0.000 0.000 0.000 0.000 0.000 0.405 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF GROUND LEVEL RELEASE 197.920 TOTAL HOURS OF STABILITY CLASS G 78.680 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 8.810 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-99

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.084 0.000 0.021 0.000 0.105 S 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.125 0.000 0.021 0.000 0.146 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS A 16.790 TOTAL HOURS OF ELEVATED STABILITY CLASS A 3.170 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-100

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.092 0.043 0.000 0.000 0.000 0.010 0.145 SSE 0.000 0.000 0.000 0.000 0.043 0.041 0.000 0.000 0.000 0.084 S 0.000 0.000 0.000 0.046 0.090 0.040 0.112 0.000 0.000 0.287 SSW 0.000 0.000 0.000 0.000 0.045 0.042 0.000 0.000 0.000 0.086 SW 0.000 0.000 0.000 0.000 0.090 0.000 0.038 0.000 0.000 0.128 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.039 0.076 0.000 0.000 0.115 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.138 0.310 0.162 0.226 0.000 0.010 0.845 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS B 28.890 TOTAL HOURS OF ELEVATED STABILITY CLASS B 18.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-101

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.151 0.000 0.000 0.191 NNE 0.000 0.000 0.000 0.000 0.045 0.081 0.188 0.000 0.000 0.313 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.089 0.000 0.000 0.000 0.000 0.089 SE 0.000 0.000 0.046 0.276 0.177 0.042 0.038 0.000 0.000 0.579 SSE 0.000 0.000 0.000 0.230 0.224 0.079 0.000 0.000 0.000 0.532 S 0.000 0.000 0.046 0.092 0.089 0.363 0.111 0.000 0.000 0.700 SSW 0.000 0.000 0.000 0.092 0.178 0.447 0.150 0.000 0.000 0.867 SW 0.000 0.000 0.000 0.046 0.090 0.041 0.074 0.000 0.000 0.250 WSW 0.000 0.000 0.000 0.000 0.043 0.043 0.000 0.000 0.000 0.086 W 0.000 0.000 0.000 0.000 0.043 0.239 0.074 0.000 0.000 0.356 WNW 0.000 0.000 0.000 0.000 0.000 0.041 0.299 0.000 0.000 0.340 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.037 0.056 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.000 0.078 0.000 0.000 0.000 0.078 SUBTOTAL 0.000 0.000 0.092 0.735 0.977 1.493 1.121 0.056 0.000 4.473 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS C 109.390 TOTAL HOURS OF ELEVATED STABILITY CLASS C 97.340 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-102

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.138 0.322 0.401 0.487 0.266 0.000 0.000 1.613 NNE 0.000 0.000 0.138 0.276 0.483 0.980 0.416 0.000 0.000 2.293 NE 0.000 0.046 0.138 0.092 0.265 0.280 0.224 0.000 0.000 1.045 ENE 0.000 0.000 0.000 0.092 0.134 0.082 0.038 0.000 0.000 0.346 E 0.000 0.000 0.046 0.138 0.133 0.000 0.000 0.000 0.000 0.317 ESE 0.000 0.000 0.092 0.230 0.358 0.248 0.151 0.000 0.000 1.078 SE 0.000 0.046 0.460 1.057 0.355 1.208 0.522 0.053 0.000 3.701 SSE 0.000 0.000 0.643 0.919 1.016 1.153 0.935 0.125 0.001 4.794 S 0.000 0.046 0.643 1.241 0.625 1.448 1.419 0.402 0.005 5.828 SSW 0.000 0.000 0.643 1.608 0.882 0.980 0.523 0.011 0.000 4.648 SW 0.000 0.000 0.643 1.057 0.929 0.533 0.074 0.064 0.000 3.300 WSW 0.000 0.000 0.551 1.241 0.765 0.905 0.113 0.074 0.000 3.648 W 0.000 0.000 0.230 1.011 1.200 1.463 0.483 0.354 0.006 4.747 WNW 0.000 0.000 0.000 0.506 0.527 0.840 0.450 0.187 0.032 2.542 NW 0.000 0.000 0.138 0.551 0.717 1.177 0.372 0.086 0.000 3.041 NNW 0.000 0.000 0.046 0.322 0.264 0.924 0.302 0.000 0.000 1.858 SUBTOTAL 0.000 0.138 4.550 10.662 9.053 12.708 6.287 1.357 0.045 44.798 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS D 1051.290 TOTAL HOURS OF ELEVATED STABILITY CLASS D 974.800 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-103

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.138 0.138 0.444 0.637 0.038 0.000 0.000 1.395 NNE 0.000 0.000 0.046 0.184 0.703 0.884 0.227 0.000 0.000 2.044 NE 0.000 0.000 0.138 0.506 0.308 0.438 0.000 0.000 0.000 1.390 ENE 0.000 0.000 0.184 0.184 0.089 0.000 0.000 0.000 0.000 0.456 E 0.000 0.000 0.138 0.460 0.223 0.125 0.000 0.000 0.000 0.946 ESE 0.000 0.000 0.046 0.184 0.307 0.449 0.075 0.015 0.000 1.077 SE 0.000 0.000 0.138 0.092 1.052 1.020 0.076 0.000 0.000 2.378 SSE 0.000 0.000 0.276 0.551 0.621 1.485 0.668 0.120 0.000 3.722 S 0.000 0.000 0.414 0.276 0.438 1.522 1.119 0.500 0.014 4.284 SSW 0.000 0.000 0.460 0.460 0.617 0.653 0.224 0.000 0.000 2.413 SW 0.000 0.000 0.460 1.195 0.713 0.120 0.075 0.000 0.000 2.563 WSW 0.000 0.046 0.230 0.368 0.219 0.362 0.000 0.000 0.000 1.224 W 0.000 0.000 0.138 0.322 0.439 0.330 0.038 0.000 0.000 1.267 WNW 0.000 0.000 0.000 0.276 0.089 0.163 0.038 0.000 0.000 0.565 NW 0.000 0.000 0.092 0.184 0.089 0.162 0.338 0.000 0.000 0.864 NNW 0.000 0.000 0.046 0.184 0.219 0.241 0.038 0.000 0.000 0.728 SUBTOTAL 0.000 0.046 2.941 5.561 6.571 8.593 2.954 0.636 0.014 27.316 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS E 649.510 TOTAL HOURS OF ELEVATED STABILITY CLASS E 594.390 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-104

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.092 0.173 0.367 0.000 0.000 0.000 0.724 NNE 0.000 0.000 0.138 0.138 0.179 0.644 0.000 0.000 0.000 1.099 NE 0.000 0.000 0.046 0.092 0.347 0.160 0.000 0.000 0.000 0.645 ENE 0.000 0.000 0.046 0.092 0.044 0.161 0.000 0.000 0.000 0.343 E 0.000 0.000 0.046 0.046 0.045 0.165 0.000 0.000 0.000 0.302 ESE 0.000 0.000 0.092 0.138 0.087 0.289 0.000 0.000 0.000 0.606 SE 0.000 0.000 0.046 0.046 0.130 0.444 0.000 0.000 0.000 0.666 SSE 0.000 0.000 0.046 0.230 0.134 0.441 0.038 0.000 0.000 0.888 S 0.000 0.000 0.046 0.138 0.264 1.048 0.488 0.000 0.000 1.984 SSW 0.000 0.000 0.230 0.092 0.269 0.200 0.000 0.000 0.000 0.791 SW 0.000 0.000 0.000 0.230 0.221 0.042 0.000 0.000 0.000 0.493 WSW 0.000 0.000 0.184 0.092 0.045 0.000 0.000 0.000 0.000 0.321 W 0.000 0.000 0.138 0.138 0.091 0.000 0.000 0.000 0.000 0.366 WNW 0.000 0.000 0.138 0.092 0.043 0.000 0.000 0.000 0.000 0.273 NW 0.000 0.046 0.138 0.092 0.043 0.000 0.000 0.000 0.000 0.319 NNW 0.000 0.046 0.046 0.000 0.089 0.078 0.038 0.000 0.000 0.296 SUBTOTAL 0.000 0.092 1.471 1.746 2.204 4.040 0.563 0.000 0.000 10.116 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS F 241.450 TOTAL HOURS OF ELEVATED STABILITY CLASS F 220.120 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-105

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.122 0.000 0.000 0.000 0.122 NNE 0.000 0.000 0.138 0.000 0.000 0.040 0.000 0.000 0.000 0.178 NE 0.000 0.000 0.000 0.184 0.090 0.120 0.000 0.000 0.000 0.394 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.092 0.046 0.000 0.042 0.000 0.000 0.000 0.180 ESE 0.000 0.000 0.184 0.138 0.000 0.043 0.000 0.000 0.000 0.364 SE 0.000 0.000 0.138 0.092 0.044 0.123 0.000 0.000 0.000 0.397 SSE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 S 0.000 0.000 0.046 0.000 0.000 0.119 0.000 0.000 0.000 0.165 SSW 0.000 0.092 0.138 0.092 0.089 0.000 0.000 0.000 0.000 0.411 SW 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 WSW 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.138 W 0.000 0.046 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.276 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.230 0.046 0.000 0.040 0.000 0.000 0.000 0.315 SUBTOTAL 0.000 0.138 1.379 0.781 0.223 0.690 0.000 0.000 0.000 3.211 TOTAL HOURS OF VALID OBSERVATIONS 2176.000 TOTAL HOURS OF ELEVATED RELEASES 1978.080 TOTAL HOURS OF STABILITY CLASS G 78.680 TOTAL HOURS OF ELEVATED STABILITY CLASS G 69.870 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/08/18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-106

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

THIRD QUARTER E-107

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 NNE 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 SE 0.000 0.000 0.003 0.025 0.000 0.000 0.000 0.000 0.000 0.028 SSE 0.000 0.000 0.017 0.010 0.000 0.000 0.000 0.000 0.000 0.027 S 0.000 0.000 0.029 0.000 0.000 0.000 0.000 0.000 0.000 0.029 SSW 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SW 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.005 WSW 0.000 0.000 0.003 0.000 0.010 0.000 0.000 0.000 0.000 0.013 W 0.000 0.000 0.000 0.008 0.019 0.000 0.000 0.000 0.000 0.027 WNW 0.000 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.007 NW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NNW 0.000 0.000 0.000 0.000 0.005 0.030 0.000 0.000 0.000 0.035 SUBTOTAL 0.000 0.000 0.064 0.046 0.041 0.129 0.000 0.000 0.000 0.280 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS A 8.930 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 6.160 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-108

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.021 0.048 0.000 0.000 0.000 0.069 NNE 0.000 0.000 0.000 0.000 0.005 0.052 0.000 0.000 0.000 0.057 NE 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.003 0.003 0.000 0.000 0.000 0.000 0.000 0.005 SSE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.022 0.000 0.000 0.000 0.000 0.000 0.000 0.022 SSW 0.000 0.000 0.000 0.033 0.000 0.000 0.000 0.000 0.000 0.033 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.003 0.005 0.010 0.000 0.000 0.000 0.017 W 0.000 0.000 0.000 0.014 0.030 0.017 0.000 0.000 0.000 0.061 WNW 0.000 0.000 0.000 0.000 0.017 0.051 0.000 0.000 0.000 0.069 NW 0.000 0.000 0.000 0.000 0.009 0.045 0.000 0.000 0.000 0.054 NNW 0.000 0.000 0.000 0.000 0.005 0.012 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.000 0.028 0.053 0.093 0.240 0.000 0.000 0.000 0.414 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS B 25.880 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 9.100 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-109

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.012 NNE 0.000 0.000 0.000 0.000 0.010 0.029 0.000 0.000 0.000 0.039 NE 0.000 0.000 0.000 0.000 0.010 0.029 0.000 0.000 0.000 0.039 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 ESE 0.000 0.000 0.000 0.000 0.016 0.000 0.000 0.000 0.000 0.016 SE 0.000 0.000 0.004 0.007 0.000 0.000 0.000 0.000 0.000 0.011 SSE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.015 0.009 0.000 0.000 0.000 0.000 0.000 0.024 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.001 0.005 0.011 0.010 0.000 0.000 0.000 0.026 W 0.000 0.000 0.005 0.014 0.042 0.007 0.000 0.000 0.000 0.068 WNW 0.000 0.000 0.000 0.001 0.003 0.071 0.000 0.000 0.000 0.075 NW 0.000 0.000 0.000 0.002 0.006 0.017 0.000 0.000 0.000 0.025 NNW 0.000 0.000 0.000 0.001 0.005 0.013 0.000 0.000 0.000 0.019 SUBTOTAL 0.000 0.000 0.028 0.040 0.114 0.176 0.000 0.000 0.000 0.358 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS C 89.800 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 7.880 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-110

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.019 0.097 0.056 0.020 0.000 0.000 0.192 NNE 0.000 0.000 0.000 0.025 0.112 0.065 0.000 0.000 0.000 0.203 NE 0.000 0.000 0.000 0.021 0.091 0.159 0.000 0.000 0.000 0.271 ENE 0.000 0.000 0.000 0.017 0.018 0.018 0.000 0.000 0.000 0.053 E 0.000 0.000 0.001 0.031 0.076 0.000 0.000 0.000 0.000 0.109 ESE 0.000 0.000 0.034 0.090 0.084 0.019 0.000 0.000 0.000 0.226 SE 0.000 0.000 0.032 0.025 0.000 0.000 0.000 0.000 0.000 0.057 SSE 0.000 0.000 0.038 0.003 0.000 0.000 0.000 0.000 0.000 0.041 S 0.000 0.000 0.150 0.008 0.000 0.000 0.000 0.000 0.000 0.158 SSW 0.000 0.000 0.179 0.166 0.037 0.000 0.000 0.000 0.000 0.382 SW 0.000 0.000 0.030 0.012 0.000 0.000 0.000 0.000 0.000 0.042 WSW 0.000 0.000 0.020 0.020 0.009 0.000 0.000 0.000 0.000 0.049 W 0.000 0.000 0.004 0.066 0.078 0.058 0.014 0.000 0.000 0.220 WNW 0.000 0.000 0.000 0.013 0.054 0.055 0.055 0.000 0.000 0.177 NW 0.000 0.000 0.000 0.004 0.020 0.019 0.045 0.000 0.000 0.088 NNW 0.000 0.000 0.000 0.005 0.014 0.015 0.000 0.000 0.000 0.034 SUBTOTAL 0.000 0.000 0.488 0.525 0.689 0.464 0.135 0.000 0.000 2.301 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS D 1050.510 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 50.630 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-111

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.065 0.051 0.015 0.046 0.055 0.000 0.000 0.233 NNE 0.000 0.000 0.036 0.191 0.142 0.079 0.000 0.000 0.000 0.448 NE 0.000 0.000 0.012 0.059 0.061 0.127 0.000 0.000 0.000 0.258 ENE 0.000 0.000 0.035 0.021 0.005 0.000 0.000 0.000 0.000 0.061 E 0.000 0.003 0.055 0.046 0.007 0.033 0.000 0.000 0.000 0.145 ESE 0.000 0.001 0.077 0.099 0.007 0.024 0.000 0.000 0.000 0.208 SE 0.000 0.001 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.003 SSE 0.000 0.000 0.035 0.000 0.000 0.000 0.000 0.000 0.000 0.035 S 0.000 0.016 0.048 0.043 0.000 0.000 0.000 0.000 0.000 0.107 SSW 0.000 0.008 0.068 0.000 0.000 0.000 0.000 0.000 0.000 0.075 SW 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 WSW 0.000 0.000 0.004 0.004 0.000 0.000 0.000 0.000 0.000 0.008 W 0.000 0.000 0.000 0.020 0.023 0.008 0.000 0.000 0.000 0.051 WNW 0.000 0.000 0.000 0.005 0.006 0.007 0.000 0.000 0.000 0.018 NW 0.000 0.000 0.000 0.005 0.000 0.023 0.000 0.000 0.000 0.027 NNW 0.000 0.000 0.019 0.030 0.019 0.008 0.000 0.000 0.000 0.075 SUBTOTAL 0.000 0.031 0.462 0.574 0.285 0.354 0.055 0.000 0.000 1.762 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS E 580.720 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 38.760 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-112

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.115 0.055 0.000 0.000 0.000 0.000 0.000 0.170 NNE 0.000 0.000 0.065 0.201 0.031 0.000 0.000 0.000 0.000 0.298 NE 0.000 0.000 0.018 0.039 0.007 0.000 0.000 0.000 0.000 0.064 ENE 0.000 0.003 0.033 0.031 0.015 0.000 0.000 0.000 0.000 0.082 E 0.000 0.000 0.067 0.033 0.000 0.000 0.000 0.000 0.000 0.100 ESE 0.000 0.003 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SE 0.000 0.012 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.014 SSE 0.000 0.004 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.008 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.030 0.007 0.000 0.000 0.000 0.000 0.000 0.037 SUBTOTAL 0.000 0.022 0.341 0.366 0.054 0.000 0.000 0.000 0.000 0.782 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS F 367.810 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 17.210 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-113

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.002 0.070 0.041 0.000 0.000 0.000 0.000 0.000 0.114 NNE 0.000 0.002 0.037 0.027 0.000 0.000 0.000 0.000 0.000 0.066 NE 0.000 0.001 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.012 ENE 0.000 0.001 0.019 0.000 0.000 0.000 0.000 0.000 0.000 0.020 E 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.010 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.006 0.148 0.068 0.000 0.000 0.000 0.000 0.000 0.222 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF GROUND LEVEL RELEASE 134.630 TOTAL HOURS OF STABILITY CLASS G 76.350 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 4.890 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-114

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.042 0.041 0.000 0.000 0.000 0.084 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.042 0.000 0.000 0.000 0.000 0.042 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.085 0.041 0.000 0.000 0.000 0.126 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS A 8.930 TOTAL HOURS OF ELEVATED STABILITY CLASS A 2.770 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-115

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.079 0.037 0.000 0.000 0.116 NNE 0.000 0.000 0.000 0.000 0.000 0.156 0.000 0.000 0.000 0.156 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.122 0.000 0.000 0.000 0.122 SSE 0.000 0.000 0.000 0.045 0.045 0.042 0.000 0.000 0.000 0.132 S 0.000 0.000 0.000 0.000 0.000 0.079 0.000 0.000 0.000 0.079 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.000 0.043 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 NNW 0.000 0.000 0.000 0.000 0.000 0.039 0.038 0.000 0.000 0.077 SUBTOTAL 0.000 0.000 0.000 0.045 0.088 0.517 0.113 0.000 0.000 0.763 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS B 25.880 TOTAL HOURS OF ELEVATED STABILITY CLASS B 16.780 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-116

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.437 0.038 0.000 0.000 0.475 NNE 0.000 0.000 0.000 0.000 0.000 0.280 0.075 0.000 0.000 0.355 NE 0.000 0.000 0.000 0.000 0.000 0.362 0.000 0.000 0.000 0.362 ENE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.087 0.038 0.037 0.000 0.000 0.162 SE 0.000 0.000 0.045 0.318 0.128 0.082 0.000 0.000 0.000 0.574 SSE 0.000 0.000 0.000 0.045 0.085 0.000 0.000 0.000 0.000 0.131 S 0.000 0.000 0.000 0.000 0.000 0.161 0.038 0.000 0.000 0.199 SSW 0.000 0.000 0.000 0.045 0.044 0.041 0.000 0.000 0.000 0.130 SW 0.000 0.000 0.000 0.000 0.090 0.080 0.000 0.000 0.000 0.170 WSW 0.000 0.000 0.000 0.227 0.134 0.081 0.000 0.000 0.000 0.443 W 0.000 0.000 0.000 0.000 0.130 0.199 0.000 0.000 0.000 0.329 WNW 0.000 0.000 0.000 0.000 0.000 0.040 0.038 0.000 0.000 0.077 NW 0.000 0.000 0.000 0.000 0.000 0.119 0.038 0.000 0.000 0.156 NNW 0.000 0.000 0.000 0.000 0.000 0.040 0.075 0.000 0.000 0.116 SUBTOTAL 0.000 0.000 0.045 0.636 0.744 1.960 0.338 0.000 0.000 3.724 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS C 89.800 TOTAL HOURS OF ELEVATED STABILITY CLASS C 81.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-117

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.091 0.273 0.173 1.040 0.186 0.059 0.000 1.821 NNE 0.000 0.000 0.091 0.227 0.520 1.280 0.370 0.000 0.000 2.487 NE 0.000 0.000 0.273 0.136 0.394 1.129 0.150 0.000 0.000 2.082 ENE 0.000 0.000 0.136 0.273 0.216 0.203 0.000 0.000 0.000 0.828 E 0.000 0.000 0.045 0.273 0.300 0.478 0.000 0.000 0.000 1.097 ESE 0.000 0.000 0.227 0.500 0.348 0.475 0.073 0.000 0.000 1.623 SE 0.000 0.045 1.364 1.909 0.881 0.355 0.443 0.105 0.000 5.102 SSE 0.000 0.000 1.227 1.000 0.440 0.163 0.037 0.032 0.000 2.900 S 0.000 0.045 0.545 1.227 0.965 0.952 1.049 0.025 0.036 4.846 SSW 0.000 0.000 1.500 2.000 0.712 0.922 0.110 0.000 0.000 5.244 SW 0.000 0.000 0.773 1.818 1.020 0.290 0.073 0.000 0.000 3.974 WSW 0.000 0.000 0.500 2.045 0.749 0.885 0.038 0.065 0.000 4.282 W 0.000 0.000 0.227 1.318 1.093 0.762 0.074 0.065 0.000 3.539 WNW 0.000 0.000 0.091 0.409 0.866 1.558 0.075 0.081 0.000 3.081 NW 0.000 0.000 0.136 0.364 0.217 0.759 0.149 0.100 0.000 1.725 NNW 0.000 0.000 0.227 0.136 0.175 0.279 0.000 0.000 0.000 0.818 SUBTOTAL 0.000 0.091 7.455 13.909 9.070 11.530 2.826 0.532 0.036 45.449 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS D 1050.510 TOTAL HOURS OF ELEVATED STABILITY CLASS D 999.880 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-118

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.273 0.346 1.041 0.223 0.061 0.000 2.080 NNE 0.000 0.000 0.136 0.227 0.351 1.662 0.520 0.000 0.000 2.897 NE 0.000 0.000 0.091 0.045 0.302 1.140 0.488 0.000 0.000 2.066 ENE 0.000 0.000 0.091 0.182 0.350 0.245 0.000 0.000 0.000 0.869 E 0.000 0.000 0.182 0.455 0.262 0.249 0.000 0.000 0.000 1.147 ESE 0.000 0.045 0.182 0.545 1.136 0.446 0.000 0.034 0.000 2.388 SE 0.000 0.045 0.182 0.818 0.619 0.365 0.037 0.000 0.000 2.066 SSE 0.000 0.045 0.364 0.955 0.134 0.194 0.074 0.028 0.010 1.804 S 0.000 0.045 0.364 1.045 0.176 0.565 0.038 0.000 0.000 2.233 SSW 0.000 0.000 0.455 0.500 0.480 0.285 0.038 0.000 0.000 1.757 SW 0.000 0.000 0.545 0.591 0.135 0.082 0.000 0.000 0.000 1.354 WSW 0.000 0.000 0.364 0.727 0.175 0.000 0.000 0.000 0.000 1.265 W 0.000 0.045 0.273 0.409 0.485 0.121 0.038 0.000 0.000 1.370 WNW 0.000 0.000 0.045 0.136 0.086 0.079 0.000 0.000 0.000 0.346 NW 0.000 0.000 0.091 0.045 0.044 0.082 0.038 0.000 0.000 0.300 NNW 0.000 0.000 0.136 0.091 0.179 0.285 0.000 0.000 0.000 0.691 SUBTOTAL 0.000 0.227 3.636 7.045 5.260 6.839 1.494 0.123 0.010 24.635 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS E 580.720 TOTAL HOURS OF ELEVATED STABILITY CLASS E 541.960 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-119

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.002 0.000 0.136 0.136 0.088 0.635 0.000 0.000 0.000 0.997 NNE 0.001 0.000 0.091 0.182 0.264 0.947 0.490 0.000 0.000 1.975 NE 0.002 0.000 0.182 0.273 0.522 1.289 0.075 0.000 0.000 2.343 ENE 0.002 0.000 0.182 0.455 0.436 0.363 0.075 0.000 0.000 1.513 E 0.004 0.000 0.318 0.318 0.780 0.492 0.000 0.000 0.000 1.913 ESE 0.005 0.000 0.364 0.636 0.829 0.574 0.000 0.000 0.000 2.407 SE 0.009 0.045 0.682 0.545 0.577 0.084 0.000 0.000 0.000 1.943 SSE 0.004 0.045 0.227 0.091 0.223 0.000 0.000 0.000 0.000 0.590 S 0.001 0.000 0.091 0.091 0.221 0.042 0.000 0.000 0.000 0.447 SSW 0.002 0.000 0.182 0.045 0.045 0.000 0.000 0.000 0.000 0.274 SW 0.004 0.045 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.276 WSW 0.002 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.138 W 0.002 0.045 0.136 0.091 0.000 0.000 0.000 0.000 0.000 0.275 WNW 0.001 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.138 NW 0.004 0.000 0.273 0.136 0.000 0.000 0.000 0.000 0.000 0.413 NNW 0.000 0.000 0.000 0.136 0.000 0.159 0.000 0.000 0.000 0.295 SUBTOTAL 0.045 0.227 3.273 3.182 3.985 4.584 0.640 0.000 0.000 15.936 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS F 367.810 TOTAL HOURS OF ELEVATED STABILITY CLASS F 350.600 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-120

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.045 0.000 0.274 0.000 0.000 0.000 0.319 NNE 0.000 0.000 0.000 0.136 0.175 0.116 0.038 0.000 0.000 0.466 NE 0.000 0.045 0.000 0.045 0.045 0.118 0.000 0.000 0.000 0.255 ENE 0.000 0.000 0.091 0.182 0.000 0.042 0.000 0.000 0.000 0.315 E 0.000 0.000 0.091 0.136 0.087 0.042 0.000 0.000 0.000 0.356 ESE 0.000 0.045 0.045 0.136 0.045 0.000 0.000 0.000 0.000 0.273 SE 0.000 0.045 0.091 0.273 0.000 0.000 0.000 0.000 0.000 0.409 SSE 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.182 S 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SSW 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.136 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WNW 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.045 NW 0.000 0.091 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.000 0.038 SUBTOTAL 0.000 0.273 0.955 1.000 0.353 0.630 0.038 0.000 0.000 3.248 TOTAL HOURS OF VALID OBSERVATIONS 2200.000 TOTAL HOURS OF ELEVATED RELEASES 2065.370 TOTAL HOURS OF STABILITY CLASS G 76.350 TOTAL HOURS OF ELEVATED STABILITY CLASS G 71.460 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2017/10/13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-121

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 8D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FOURTH QUARTER E-122

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.006 0.106 0.000 0.000 0.000 0.112 NNE 0.000 0.000 0.000 0.000 0.005 0.022 0.000 0.000 0.000 0.027 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.008 0.032 0.009 0.000 0.000 0.000 0.050 SE 0.000 0.000 0.024 0.051 0.000 0.000 0.000 0.000 0.000 0.075 SSE 0.000 0.000 0.088 0.032 0.000 0.000 0.000 0.000 0.000 0.121 S 0.000 0.000 0.036 0.046 0.000 0.000 0.000 0.000 0.000 0.081 SSW 0.000 0.000 0.009 0.027 0.008 0.000 0.000 0.000 0.000 0.045 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 NW 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 NNW 0.000 0.000 0.000 0.000 0.000 0.017 0.000 0.000 0.000 0.017 SUBTOTAL 0.000 0.000 0.158 0.164 0.052 0.172 0.000 0.000 0.000 0.546 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS A 23.500 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 11.610 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-123

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.005 0.031 0.000 0.000 0.000 0.035 NNE 0.000 0.000 0.000 0.000 0.019 0.042 0.000 0.000 0.000 0.061 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.008 0.042 0.000 0.000 0.000 0.000 0.049 SE 0.000 0.000 0.017 0.040 0.000 0.000 0.000 0.000 0.000 0.057 SSE 0.000 0.005 0.015 0.001 0.000 0.000 0.000 0.000 0.000 0.021 S 0.000 0.000 0.007 0.025 0.000 0.000 0.000 0.000 0.000 0.032 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.003 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.009 0.000 0.000 0.055 NW 0.000 0.000 0.000 0.000 0.000 0.033 0.009 0.000 0.000 0.042 NNW 0.000 0.000 0.000 0.000 0.009 0.008 0.000 0.000 0.000 0.016 SUBTOTAL 0.000 0.005 0.039 0.077 0.074 0.159 0.019 0.000 0.000 0.373 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS B 29.570 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 7.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-124

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.027 0.009 0.000 0.000 0.000 0.036 NNE 0.000 0.000 0.000 0.000 0.019 0.013 0.000 0.000 0.000 0.032 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.003 0.024 0.035 0.000 0.000 0.000 0.063 SE 0.000 0.006 0.003 0.021 0.047 0.000 0.000 0.000 0.000 0.077 SSE 0.000 0.000 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.023 S 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.012 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.004 0.003 0.000 0.000 0.000 0.000 0.000 0.007 WSW 0.000 0.000 0.005 0.004 0.006 0.000 0.000 0.000 0.000 0.015 W 0.000 0.000 0.000 0.000 0.000 0.015 0.000 0.000 0.000 0.015 WNW 0.000 0.000 0.000 0.000 0.008 0.015 0.009 0.000 0.000 0.032 NW 0.000 0.000 0.000 0.000 0.002 0.009 0.030 0.000 0.000 0.041 NNW 0.000 0.000 0.000 0.000 0.010 0.028 0.000 0.000 0.000 0.038 SUBTOTAL 0.000 0.006 0.047 0.031 0.143 0.123 0.040 0.000 0.000 0.389 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS C 65.490 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.280 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-125

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.054 0.226 0.068 0.000 0.000 0.000 0.349 NNE 0.000 0.000 0.000 0.026 0.199 0.056 0.000 0.000 0.000 0.281 NE 0.000 0.000 0.000 0.013 0.027 0.012 0.000 0.000 0.000 0.052 ENE 0.000 0.000 0.000 0.000 0.007 0.060 0.000 0.000 0.000 0.067 E 0.000 0.000 0.005 0.011 0.052 0.000 0.000 0.000 0.000 0.069 ESE 0.000 0.000 0.040 0.065 0.135 0.058 0.000 0.000 0.000 0.298 SE 0.000 0.021 0.116 0.101 0.000 0.000 0.000 0.000 0.000 0.238 SSE 0.000 0.002 0.106 0.012 0.000 0.000 0.000 0.000 0.000 0.120 S 0.000 0.000 0.047 0.070 0.063 0.000 0.000 0.000 0.000 0.181 SSW 0.000 0.000 0.012 0.017 0.009 0.000 0.000 0.000 0.000 0.038 SW 0.000 0.000 0.005 0.008 0.000 0.000 0.000 0.000 0.000 0.013 WSW 0.000 0.000 0.007 0.023 0.011 0.009 0.000 0.000 0.000 0.050 W 0.000 0.000 0.003 0.025 0.048 0.071 0.000 0.000 0.000 0.147 WNW 0.000 0.000 0.000 0.001 0.048 0.193 0.054 0.071 0.047 0.415 NW 0.000 0.000 0.000 0.009 0.041 0.162 0.185 0.090 0.000 0.487 NNW 0.000 0.000 0.000 0.012 0.146 0.284 0.029 0.000 0.000 0.472 SUBTOTAL 0.000 0.023 0.341 0.449 1.015 0.973 0.268 0.161 0.047 3.277 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS D 871.350 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 69.670 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-126

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.017 0.101 0.028 0.045 0.000 0.000 0.000 0.191 NNE 0.000 0.000 0.017 0.073 0.104 0.000 0.000 0.000 0.000 0.194 NE 0.000 0.000 0.000 0.037 0.039 0.000 0.000 0.000 0.000 0.076 ENE 0.000 0.000 0.002 0.004 0.000 0.000 0.000 0.000 0.000 0.006 E 0.000 0.016 0.095 0.123 0.022 0.000 0.000 0.000 0.000 0.256 ESE 0.000 0.032 0.283 0.325 0.065 0.000 0.000 0.000 0.000 0.705 SE 0.000 0.017 0.145 0.060 0.000 0.000 0.000 0.000 0.000 0.222 SSE 0.000 0.026 0.280 0.083 0.000 0.000 0.000 0.000 0.000 0.389 S 0.000 0.000 0.286 0.261 0.230 0.131 0.000 0.000 0.000 0.908 SSW 0.000 0.005 0.042 0.024 0.010 0.075 0.000 0.000 0.000 0.156 SW 0.000 0.001 0.002 0.005 0.000 0.000 0.000 0.000 0.000 0.009 WSW 0.000 0.000 0.001 0.004 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.010 0.070 0.044 0.016 0.000 0.000 0.000 0.140 WNW 0.000 0.008 0.004 0.010 0.018 0.000 0.047 0.000 0.000 0.086 NW 0.000 0.001 0.000 0.015 0.021 0.101 0.010 0.000 0.000 0.148 NNW 0.000 0.000 0.015 0.091 0.100 0.101 0.000 0.000 0.000 0.306 SUBTOTAL 0.000 0.107 1.200 1.286 0.681 0.468 0.057 0.000 0.000 3.799 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS E 748.740 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 80.760 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-127

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.085 0.069 0.000 0.000 0.000 0.000 0.000 0.154 NNE 0.000 0.000 0.020 0.060 0.008 0.000 0.000 0.000 0.000 0.088 NE 0.000 0.005 0.012 0.006 0.000 0.000 0.000 0.000 0.000 0.024 ENE 0.000 0.017 0.026 0.012 0.000 0.000 0.000 0.000 0.000 0.056 E 0.000 0.027 0.140 0.092 0.000 0.000 0.000 0.000 0.000 0.260 ESE 0.000 0.025 0.118 0.025 0.000 0.000 0.000 0.000 0.000 0.169 SE 0.000 0.027 0.033 0.000 0.000 0.000 0.000 0.000 0.000 0.060 SSE 0.000 0.050 0.113 0.000 0.000 0.000 0.000 0.000 0.000 0.163 S 0.000 0.008 0.028 0.035 0.175 0.067 0.000 0.000 0.000 0.313 SSW 0.000 0.031 0.018 0.000 0.000 0.000 0.000 0.000 0.000 0.049 SW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.009 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.011 W 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.004 WNW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NW 0.000 0.000 0.007 0.003 0.000 0.000 0.000 0.000 0.000 0.009 NNW 0.000 0.000 0.040 0.047 0.014 0.000 0.000 0.000 0.000 0.101 SUBTOTAL 0.000 0.203 0.648 0.350 0.197 0.067 0.000 0.000 0.000 1.465 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS F 278.180 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 31.140 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-128

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.102 0.048 0.000 0.000 0.000 0.000 0.000 0.150 NNE 0.000 0.002 0.019 0.007 0.000 0.000 0.000 0.000 0.000 0.028 NE 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.009 ENE 0.000 0.012 0.046 0.003 0.000 0.000 0.000 0.000 0.000 0.061 E 0.000 0.035 0.041 0.005 0.000 0.000 0.000 0.000 0.000 0.081 ESE 0.000 0.006 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.016 SE 0.000 0.002 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.015 SSE 0.000 0.010 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.019 S 0.000 0.004 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.012 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 NW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.000 0.048 0.024 0.000 0.000 0.000 0.000 0.000 0.071 SUBTOTAL 0.000 0.071 0.309 0.086 0.000 0.000 0.000 0.000 0.000 0.466 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF GROUND LEVEL RELEASE 219.290 TOTAL HOURS OF STABILITY CLASS G 109.170 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 9.910 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-129

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 SE 0.000 0.000 0.000 0.000 0.000 0.084 0.039 0.000 0.000 0.123 SSE 0.000 0.000 0.000 0.000 0.091 0.084 0.076 0.069 0.000 0.320 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.040 0.039 0.000 0.000 0.078 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.091 0.207 0.191 0.069 0.000 0.559 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS A 23.500 TOTAL HOURS OF ELEVATED STABILITY CLASS A 11.890 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-130

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.231 0.000 0.000 0.271 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 SE 0.000 0.000 0.000 0.000 0.135 0.124 0.115 0.000 0.000 0.374 SSE 0.000 0.000 0.000 0.000 0.091 0.042 0.000 0.000 0.000 0.133 S 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 SSW 0.000 0.000 0.000 0.000 0.000 0.082 0.039 0.000 0.000 0.121 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.226 0.370 0.423 0.000 0.000 1.018 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS B 29.570 TOTAL HOURS OF ELEVATED STABILITY CLASS B 21.650 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-131

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.366 0.154 0.000 0.000 0.520 NNE 0.000 0.000 0.000 0.000 0.000 0.327 0.038 0.000 0.000 0.365 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.088 0.120 0.077 0.000 0.000 0.285 SE 0.000 0.000 0.000 0.094 0.228 0.120 0.076 0.023 0.000 0.541 SSE 0.000 0.000 0.000 0.094 0.089 0.043 0.156 0.000 0.000 0.382 S 0.000 0.000 0.000 0.047 0.000 0.042 0.039 0.000 0.000 0.128 SSW 0.000 0.000 0.000 0.047 0.045 0.169 0.000 0.000 0.000 0.262 SW 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.000 0.044 WSW 0.000 0.000 0.000 0.000 0.044 0.041 0.000 0.000 0.000 0.086 W 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.282 0.539 1.269 0.578 0.023 0.000 2.691 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS C 65.490 TOTAL HOURS OF ELEVATED STABILITY CLASS C 57.210 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-132

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.094 0.188 0.329 0.497 2.843 0.999 0.000 0.000 4.951 NNE 0.000 0.000 0.235 0.517 0.405 2.046 0.346 0.000 0.000 3.550 NE 0.000 0.000 0.094 0.188 0.684 0.169 0.000 0.000 0.000 1.135 ENE 0.000 0.000 0.141 0.141 0.275 0.085 0.153 0.000 0.000 0.794 E 0.000 0.047 0.000 0.094 0.000 0.040 0.077 0.000 0.000 0.258 ESE 0.000 0.047 0.094 0.376 0.269 0.289 0.269 0.000 0.000 1.344 SE 0.000 0.000 0.188 1.129 0.592 0.666 0.958 0.311 0.000 3.844 SSE 0.000 0.000 0.706 0.376 0.322 1.025 0.884 0.238 0.000 3.551 S 0.000 0.000 0.329 0.517 0.178 0.649 0.381 0.214 0.000 2.270 SSW 0.000 0.000 0.376 0.235 0.044 0.166 0.308 0.040 0.000 1.169 SW 0.000 0.047 0.470 0.376 0.272 0.213 0.000 0.000 0.000 1.378 WSW 0.000 0.047 0.329 0.659 0.272 0.294 0.039 0.000 0.000 1.639 W 0.000 0.000 0.470 0.470 0.588 0.997 0.422 0.000 0.000 2.948 WNW 0.000 0.000 0.188 0.423 0.448 0.785 0.730 0.110 0.009 2.693 NW 0.000 0.000 0.141 0.235 0.503 0.782 0.723 0.312 0.004 2.701 NNW 0.000 0.000 0.094 0.094 0.498 1.963 0.805 0.028 0.000 3.483 SUBTOTAL 0.000 0.282 4.045 6.162 5.849 13.009 7.094 1.254 0.013 37.708 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS D 871.350 TOTAL HOURS OF ELEVATED STABILITY CLASS D 801.680 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-133

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.188 0.329 0.634 0.992 0.077 0.000 0.000 2.220 NNE 0.000 0.000 0.141 0.188 0.135 0.940 0.039 0.000 0.000 1.443 NE 0.000 0.094 0.141 0.282 0.311 0.625 0.000 0.000 0.000 1.453 ENE 0.000 0.000 0.000 0.188 0.091 0.000 0.000 0.000 0.000 0.279 E 0.000 0.000 0.047 0.282 0.179 0.080 0.000 0.000 0.000 0.588 ESE 0.000 0.000 0.188 0.282 0.638 1.952 0.078 0.000 0.000 3.138 SE 0.000 0.000 0.094 0.188 0.450 1.844 0.730 0.045 0.000 3.351 SSE 0.000 0.000 0.376 0.517 0.451 1.513 1.264 0.226 0.000 4.348 S 0.000 0.047 0.329 0.329 0.857 1.233 0.959 0.365 0.018 4.137 SSW 0.000 0.047 0.376 1.082 0.505 0.579 0.574 0.133 0.033 3.329 SW 0.000 0.000 0.470 0.659 0.364 0.212 0.000 0.000 0.000 1.705 WSW 0.000 0.000 0.141 0.282 0.181 0.128 0.077 0.000 0.000 0.810 W 0.000 0.000 0.047 0.141 0.272 0.501 0.038 0.000 0.000 0.999 WNW 0.000 0.000 0.047 0.047 0.179 0.082 0.078 0.000 0.000 0.433 NW 0.000 0.000 0.188 0.141 0.224 0.866 0.308 0.000 0.000 1.727 NNW 0.000 0.000 0.000 0.188 0.452 0.664 0.155 0.000 0.000 1.459 SUBTOTAL 0.000 0.188 2.775 5.127 5.921 12.213 4.375 0.769 0.051 31.420 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS E 748.740 TOTAL HOURS OF ELEVATED STABILITY CLASS E 667.980 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-134

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.047 0.228 1.207 0.078 0.000 0.000 1.560 NNE 0.000 0.000 0.047 0.094 0.091 0.488 0.000 0.000 0.000 0.720 NE 0.000 0.000 0.000 0.047 0.046 0.244 0.000 0.000 0.000 0.337 ENE 0.000 0.000 0.047 0.141 0.092 0.169 0.000 0.000 0.000 0.449 E 0.000 0.000 0.141 0.141 0.179 0.425 0.000 0.000 0.000 0.886 ESE 0.000 0.000 0.047 0.141 0.404 1.003 0.000 0.000 0.000 1.595 SE 0.000 0.000 0.094 0.047 0.585 1.179 0.000 0.000 0.000 1.905 SSE 0.000 0.000 0.141 0.094 0.407 0.294 0.116 0.000 0.000 1.052 S 0.000 0.047 0.094 0.094 0.270 0.331 0.115 0.000 0.000 0.952 SSW 0.000 0.000 0.000 0.376 0.182 0.041 0.000 0.000 0.000 0.599 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.047 0.046 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.047 0.188 0.183 0.000 0.000 0.000 0.000 0.419 NW 0.000 0.000 0.047 0.047 0.225 0.169 0.000 0.000 0.000 0.488 NNW 0.000 0.000 0.000 0.000 0.271 0.246 0.000 0.000 0.000 0.517 SUBTOTAL 0.000 0.047 0.706 1.552 3.210 5.796 0.310 0.000 0.000 11.620 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS F 278.180 TOTAL HOURS OF ELEVATED STABILITY CLASS F 247.040 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-135

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.141 0.047 0.250 0.000 0.000 0.000 0.438 NNE 0.000 0.000 0.000 0.000 0.045 0.041 0.000 0.000 0.000 0.086 NE 0.000 0.000 0.094 0.141 0.000 0.000 0.000 0.000 0.000 0.235 ENE 0.000 0.000 0.000 0.000 0.045 0.040 0.000 0.000 0.000 0.086 E 0.000 0.000 0.047 0.188 0.044 0.044 0.000 0.000 0.000 0.323 ESE 0.000 0.000 0.047 0.659 0.416 0.298 0.000 0.000 0.000 1.419 SE 0.000 0.000 0.141 0.141 0.543 0.130 0.000 0.000 0.000 0.955 SSE 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.141 S 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.235 0.047 0.046 0.000 0.000 0.000 0.000 0.328 NW 0.000 0.000 0.141 0.047 0.046 0.000 0.000 0.000 0.000 0.234 NNW 0.000 0.000 0.094 0.141 0.000 0.000 0.000 0.000 0.000 0.235 SUBTOTAL 0.000 0.094 0.941 1.599 1.231 0.804 0.000 0.000 0.000 4.669 TOTAL HOURS OF VALID OBSERVATIONS 2126.000 TOTAL HOURS OF ELEVATED RELEASES 1906.710 TOTAL HOURS OF STABILITY CLASS G 109.170 TOTAL HOURS OF ELEVATED STABILITY CLASS G 99.260 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2018/02/20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-136

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9A JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FIRST QUARTER E-137

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.046 0.000 0.186 0.000 0.000 0.232 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.046 0.000 0.093 0.186 0.232 0.000 0.000 0.557 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS A 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 10.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-138

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.278 0.139 0.000 0.418 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.046 0.046 0.232 0.371 0.139 0.000 0.835 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS B 18 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 18 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 13.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-139

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.000 0.696 0.093 0.000 0.835 NNE 0.000 0.000 0.000 0.000 0.000 0.139 0.232 0.000 0.000 0.371 NE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.186 0.046 0.000 0.000 0.278 SE 0.000 0.000 0.000 0.046 0.046 0.000 0.139 0.093 0.000 0.325 SSE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.093 S 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.093 SSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.046 0.000 0.046 0.046 0.046 0.000 0.186 WSW 0.000 0.000 0.000 0.000 0.000 0.046 0.093 0.093 0.000 0.232 W 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.232 0.046 0.000 0.278 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.186 0.000 0.000 0.232 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0.557 0.000 0.000 0.603 SUBTOTAL 0.000 0.000 0.046 0.139 0.093 0.650 2.367 0.418 0.000 3.712 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS C 80 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 80 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 14.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-140

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.046 0.000 0.093 0.139 0.650 1.763 0.650 0.000 3.341 NNE 0.000 0.000 0.093 0.232 0.325 1.067 1.206 0.093 0.000 3.016 NE 0.000 0.000 0.232 0.046 0.046 0.882 0.325 0.000 0.000 1.531 ENE 0.000 0.000 0.046 0.139 0.046 0.278 0.000 0.000 0.000 0.510 E 0.000 0.046 0.046 0.093 0.046 0.046 0.000 0.000 0.000 0.278 ESE 0.000 0.000 0.093 0.139 0.325 0.603 0.371 0.093 0.000 1.624 SE 0.000 0.000 0.186 0.232 0.046 0.696 0.742 0.186 0.000 2.088 SSE 0.000 0.000 0.000 0.046 0.046 0.603 0.510 0.325 0.139 1.671 S 0.000 0.000 0.186 0.186 0.139 0.510 0.325 0.418 0.464 2.227 SSW 0.000 0.000 0.000 0.139 0.139 0.974 0.928 0.232 0.046 2.459 SW 0.000 0.046 0.232 0.139 0.139 0.418 0.139 0.046 0.000 1.160 WSW 0.000 0.000 0.464 0.325 0.093 0.974 0.603 0.046 0.000 2.506 W 0.000 0.000 0.139 0.371 0.186 0.603 1.160 0.093 0.000 2.552 WNW 0.000 0.000 0.093 0.278 0.371 1.114 1.439 1.253 0.046 4.594 NW 0.000 0.000 0.046 0.371 0.325 0.835 1.299 1.021 0.650 4.548 NNW 0.000 0.000 0.046 0.139 0.186 0.882 1.067 0.696 0.186 3.202 SUBTOTAL 0.000 0.139 1.903 2.970 2.599 11.137 11.879 5.151 1.531 37.309 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS D 804 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 804 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 12.77 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-141

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.742 1.392 0.093 0.000 2.227 NNE 0.000 0.000 0.093 0.000 0.139 1.206 1.392 0.000 0.000 2.831 NE 0.000 0.000 0.046 0.093 0.046 0.557 0.742 0.046 0.000 1.531 ENE 0.000 0.000 0.046 0.093 0.046 0.232 0.418 0.093 0.000 0.928 E 0.000 0.000 0.232 0.093 0.139 0.325 0.139 0.046 0.000 0.974 ESE 0.000 0.000 0.186 0.093 0.139 1.021 1.160 0.186 0.000 2.784 SE 0.000 0.000 0.046 0.325 0.046 1.299 1.485 0.974 0.093 4.269 SSE 0.000 0.000 0.000 0.046 0.093 1.346 1.671 1.346 0.418 4.919 S 0.000 0.000 0.093 0.046 0.371 1.160 1.903 2.135 1.578 7.285 SSW 0.000 0.000 0.046 0.046 0.093 1.021 2.552 2.088 0.232 6.079 SW 0.000 0.000 0.000 0.139 0.139 1.624 0.650 0.232 0.046 2.831 WSW 0.000 0.000 0.000 0.046 0.232 1.160 0.232 0.000 0.046 1.717 W 0.000 0.000 0.000 0.139 0.278 0.418 0.510 0.000 0.000 1.346 WNW 0.000 0.000 0.046 0.093 0.278 0.325 0.046 0.046 0.000 0.835 NW 0.000 0.000 0.046 0.093 0.093 0.510 0.650 0.139 0.000 1.531 NNW 0.000 0.000 0.046 0.046 0.000 0.510 0.789 0.232 0.046 1.671 SUBTOTAL 0.000 0.000 0.928 1.392 2.135 13.457 15.731 7.657 2.459 43.759 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS E 943 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 943 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 14.42 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-142

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.000 0.000 0.046 0.139 0.046 0.000 0.278 NNE 0.000 0.000 0.046 0.000 0.000 0.232 0.139 0.000 0.000 0.418 NE 0.000 0.000 0.000 0.000 0.000 0.139 0.093 0.000 0.000 0.232 ENE 0.000 0.000 0.046 0.139 0.186 0.186 0.000 0.046 0.000 0.603 E 0.000 0.000 0.093 0.000 0.046 0.278 0.093 0.000 0.000 0.510 ESE 0.000 0.000 0.000 0.046 0.046 0.371 0.232 0.000 0.000 0.696 SE 0.000 0.046 0.000 0.000 0.186 0.371 0.325 0.093 0.046 1.067 SSE 0.000 0.000 0.046 0.046 0.139 0.510 1.810 0.603 0.046 3.202 S 0.000 0.000 0.046 0.093 0.000 0.278 2.227 0.696 0.000 3.341 SSW 0.000 0.000 0.046 0.000 0.139 0.186 0.278 0.000 0.000 0.650 SW 0.000 0.000 0.000 0.046 0.093 0.278 0.278 0.046 0.000 0.742 WSW 0.000 0.000 0.046 0.046 0.046 0.093 0.000 0.000 0.000 0.232 W 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.186 WNW 0.000 0.046 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.139 NW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.093 0.000 0.000 0.000 0.139 0.000 0.000 0.232 SUBTOTAL 0.000 0.093 0.510 0.510 0.928 3.155 5.754 1.531 0.093 12.575 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS F 271 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 271 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 12.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-143

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1, 2017 - MAR 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.046 0.232 0.000 0.000 0.000 0.278 SSE 0.000 0.000 0.000 0.000 0.000 0.139 0.046 0.186 0.000 0.371 S 0.000 0.000 0.000 0.000 0.000 0.325 0.046 0.000 0.000 0.371 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.093 0.000 0.093 0.696 0.186 0.186 0.000 1.253 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS G 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2155 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/05/05 MEAN WIND SPEED = 11.53 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-144

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9B JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES SECOND QUARTER E-145

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.047 0.140 S 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.140 0.000 0.000 0.047 0.187 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS A 4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 4 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 14.15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-146

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.047 0.140 SSE 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.047 0.000 0.187 S 0.000 0.000 0.000 0.047 0.047 0.000 0.094 0.047 0.000 0.234 SSW 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.047 0.000 0.140 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.140 0.000 0.000 0.140 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.140 0.187 0.187 0.234 0.140 0.047 0.936 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS B 21 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 20 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 12.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-147

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.187 0.047 0.000 0.234 NNE 0.000 0.000 0.000 0.000 0.047 0.047 0.140 0.140 0.000 0.374 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.187 SE 0.000 0.000 0.047 0.328 0.094 0.140 0.047 0.000 0.000 0.655 SSE 0.000 0.000 0.000 0.187 0.047 0.094 0.047 0.000 0.000 0.374 S 0.000 0.000 0.000 0.187 0.000 0.374 0.094 0.094 0.000 0.749 SSW 0.000 0.000 0.000 0.047 0.094 0.328 0.374 0.047 0.000 0.889 SW 0.000 0.000 0.047 0.094 0.000 0.094 0.047 0.000 0.140 0.421 WSW 0.000 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.000 0.140 W 0.000 0.000 0.000 0.000 0.000 0.094 0.187 0.094 0.000 0.374 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.234 0.140 0.000 0.421 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.140 NNW 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.094 SUBTOTAL 0.000 0.000 0.094 0.842 0.328 1.497 1.544 0.608 0.140 5.054 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS C 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 108 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 11.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-148

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.047 0.094 0.140 0.515 0.702 0.468 0.000 0.000 1.965 NNE 0.000 0.000 0.047 0.187 0.374 0.936 0.796 0.047 0.000 2.387 NE 0.000 0.000 0.047 0.000 0.140 0.374 0.328 0.140 0.000 1.029 ENE 0.000 0.094 0.000 0.047 0.140 0.140 0.047 0.000 0.000 0.468 E 0.000 0.000 0.047 0.000 0.187 0.094 0.000 0.000 0.000 0.328 ESE 0.000 0.000 0.094 0.374 0.374 0.608 0.094 0.140 0.000 1.685 SE 0.000 0.000 0.608 0.936 0.328 0.842 0.655 0.468 0.094 3.931 SSE 0.000 0.000 0.281 0.187 0.562 0.983 1.310 0.889 0.281 4.492 S 0.000 0.000 0.421 0.562 0.702 1.310 1.731 0.983 0.281 5.990 SSW 0.000 0.000 0.281 0.983 0.842 1.451 0.608 0.468 0.047 4.679 SW 0.000 0.000 0.281 0.562 0.562 1.778 0.468 0.094 0.094 3.837 WSW 0.000 0.000 0.562 0.936 0.889 1.263 0.328 0.140 0.140 4.258 W 0.000 0.000 0.187 0.796 0.796 1.965 1.076 0.328 0.796 5.943 WNW 0.000 0.000 0.000 0.374 0.702 1.076 0.749 0.421 0.328 3.650 NW 0.000 0.000 0.234 0.328 0.655 1.076 0.562 0.140 0.000 2.995 NNW 0.000 0.000 0.047 0.187 0.328 0.983 0.562 0.094 0.000 2.199 SUBTOTAL 0.000 0.140 3.229 6.598 8.095 15.583 9.780 4.352 2.059 49.836 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS D 1080 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1065 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 10.83 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-149

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.047 0.094 0.234 0.515 0.749 0.000 0.000 1.638 NNE 0.000 0.000 0.000 0.047 0.140 0.562 0.983 0.140 0.000 1.872 NE 0.000 0.047 0.047 0.234 0.187 0.562 0.421 0.000 0.000 1.497 ENE 0.000 0.000 0.047 0.234 0.187 0.140 0.000 0.000 0.000 0.608 E 0.000 0.000 0.140 0.140 0.187 0.234 0.000 0.000 0.000 0.702 ESE 0.000 0.000 0.094 0.094 0.000 0.702 0.187 0.140 0.000 1.217 SE 0.000 0.000 0.187 0.094 0.234 1.170 0.421 0.000 0.047 2.153 SSE 0.000 0.047 0.047 0.047 0.421 1.123 1.263 0.702 0.187 3.837 S 0.000 0.000 0.047 0.187 0.281 1.123 1.825 1.310 0.281 5.054 SSW 0.000 0.000 0.234 0.328 0.281 1.029 0.796 0.140 0.000 2.808 SW 0.000 0.047 0.187 0.421 0.421 1.544 0.468 0.094 0.000 3.182 WSW 0.000 0.000 0.140 0.187 0.421 0.749 0.234 0.000 0.000 1.731 W 0.000 0.047 0.140 0.234 0.140 0.562 0.187 0.000 0.000 1.310 WNW 0.000 0.000 0.094 0.047 0.234 0.281 0.187 0.000 0.000 0.842 NW 0.000 0.000 0.000 0.000 0.094 0.328 0.234 0.281 0.000 0.936 NNW 0.000 0.000 0.047 0.094 0.187 0.094 0.234 0.000 0.000 0.655 SUBTOTAL 0.000 0.187 1.497 2.480 3.650 10.716 8.189 2.808 0.515 30.042 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS E 653 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 642 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 11.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-150

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.094 0.047 0.000 0.140 0.187 0.000 0.000 0.468 NNE 0.000 0.000 0.047 0.140 0.094 0.234 0.468 0.047 0.000 1.029 NE 0.000 0.047 0.047 0.140 0.047 0.374 0.374 0.094 0.000 1.123 ENE 0.000 0.000 0.000 0.047 0.047 0.187 0.234 0.000 0.000 0.515 E 0.000 0.000 0.047 0.000 0.094 0.094 0.000 0.000 0.000 0.234 ESE 0.000 0.047 0.000 0.187 0.047 0.281 0.094 0.000 0.000 0.655 SE 0.000 0.000 0.047 0.047 0.047 0.094 0.234 0.000 0.000 0.468 SSE 0.000 0.000 0.047 0.047 0.000 0.562 0.421 0.000 0.000 1.076 S 0.000 0.000 0.047 0.140 0.000 0.234 1.029 0.374 0.000 1.825 SSW 0.000 0.000 0.000 0.000 0.047 0.234 0.515 0.000 0.000 0.796 SW 0.000 0.000 0.047 0.000 0.047 0.328 0.281 0.000 0.000 0.702 WSW 0.000 0.000 0.094 0.047 0.140 0.187 0.047 0.000 0.000 0.515 W 0.000 0.000 0.047 0.140 0.094 0.187 0.000 0.000 0.000 0.468 WNW 0.000 0.047 0.140 0.094 0.000 0.140 0.000 0.000 0.000 0.421 NW 0.000 0.000 0.047 0.140 0.000 0.000 0.047 0.000 0.000 0.234 NNW 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.094 0.000 0.187 SUBTOTAL 0.000 0.140 0.796 1.217 0.702 3.322 3.931 0.608 0.000 10.716 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS F 237 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 229 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 10.84 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-151

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 2017 - JUN 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.140 0.000 0.047 0.000 0.094 0.000 0.000 0.281 NNE 0.000 0.000 0.047 0.047 0.047 0.047 0.047 0.000 0.000 0.234 NE 0.000 0.000 0.047 0.000 0.000 0.000 0.047 0.000 0.000 0.094 ENE 0.000 0.094 0.047 0.094 0.047 0.094 0.140 0.000 0.000 0.515 E 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.094 0.094 0.187 0.094 0.000 0.000 0.000 0.468 SE 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.094 SSE 0.000 0.000 0.094 0.000 0.000 0.094 0.047 0.000 0.000 0.234 S 0.000 0.000 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.187 SSW 0.000 0.047 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.094 SW 0.000 0.000 0.047 0.140 0.094 0.047 0.000 0.000 0.000 0.328 WSW 0.000 0.047 0.094 0.000 0.047 0.000 0.000 0.000 0.000 0.187 W 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 WNW 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 NNW 0.000 0.000 0.140 0.094 0.000 0.000 0.047 0.000 0.000 0.281 SUBTOTAL 0.000 0.187 0.889 0.608 0.515 0.468 0.562 0.000 0.000 3.229 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2176 TOTAL HOURS OF STABILITY CLASS G 72 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 69 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2137 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/08/18 MEAN WIND SPEED = 6.79 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-152

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9C JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES THIRD QUARTER E-153

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 SSE 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.136 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 9.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-154

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.182 NNE 0.000 0.000 0.000 0.000 0.000 0.091 0.045 0.000 0.000 0.136 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.045 SE 0.000 0.000 0.000 0.000 0.045 0.136 0.000 0.000 0.000 0.182 SSE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.045 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SUBTOTAL 0.000 0.000 0.000 0.000 0.091 0.455 0.318 0.000 0.000 0.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS B 19 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 19 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 11.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-155

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.409 0.227 0.000 0.000 0.636 NNE 0.000 0.000 0.000 0.000 0.000 0.273 0.045 0.000 0.000 0.318 NE 0.000 0.000 0.000 0.000 0.000 0.364 0.000 0.000 0.000 0.364 ENE 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.091 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.091 0.045 0.045 0.000 0.182 SE 0.000 0.000 0.045 0.273 0.136 0.182 0.000 0.000 0.000 0.636 SSE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.045 0.000 0.182 0.045 0.000 0.000 0.273 SSW 0.000 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.091 SW 0.000 0.000 0.000 0.045 0.000 0.091 0.091 0.000 0.000 0.227 WSW 0.000 0.000 0.000 0.045 0.182 0.227 0.000 0.000 0.000 0.455 W 0.000 0.000 0.000 0.000 0.045 0.182 0.182 0.000 0.000 0.409 WNW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.000 0.000 0.000 0.136 0.045 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.091 0.000 0.000 0.136 SUBTOTAL 0.000 0.000 0.045 0.409 0.455 2.318 0.818 0.045 0.000 4.091 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS C 90 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 90 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 10.10 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-156

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.136 0.182 0.182 0.909 0.682 0.182 0.045 2.318 NNE 0.000 0.000 0.136 0.136 0.182 1.273 0.727 0.136 0.000 2.591 NE 0.000 0.045 0.000 0.182 0.409 1.182 0.273 0.000 0.000 2.091 ENE 0.000 0.000 0.182 0.136 0.227 0.318 0.000 0.000 0.000 0.864 E 0.000 0.000 0.136 0.273 0.091 0.409 0.409 0.000 0.000 1.318 ESE 0.000 0.000 0.500 0.773 0.591 0.636 0.318 0.091 0.045 2.955 SE 0.000 0.045 0.955 1.273 0.727 0.545 0.364 0.409 0.000 4.318 SSE 0.000 0.000 0.773 0.636 0.273 0.273 0.182 0.045 0.045 2.227 S 0.000 0.000 0.727 0.682 0.500 0.818 1.727 0.091 0.318 4.864 SSW 0.000 0.000 0.773 1.318 0.909 1.227 0.636 0.045 0.045 4.955 SW 0.000 0.000 0.909 1.045 0.727 1.545 0.409 0.091 0.000 4.727 WSW 0.000 0.000 0.500 1.409 1.091 1.455 0.682 0.045 0.045 5.227 W 0.000 0.000 0.318 0.727 0.864 1.682 0.500 0.000 0.136 4.227 WNW 0.000 0.000 0.227 0.409 0.364 1.591 0.545 0.045 0.091 3.273 NW 0.000 0.000 0.091 0.182 0.364 0.682 0.136 0.182 0.000 1.636 NNW 0.000 0.000 0.091 0.136 0.182 0.318 0.136 0.000 0.000 0.864 SUBTOTAL 0.000 0.091 6.455 9.500 7.682 14.864 7.727 1.364 0.773 48.455 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS D 1066 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1066 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 8.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-157

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.045 0.045 0.045 0.182 0.727 0.818 0.136 0.182 2.182 NNE 0.000 0.000 0.000 0.091 0.091 0.955 1.455 0.500 0.000 3.091 NE 0.000 0.045 0.000 0.000 0.000 0.227 1.136 0.818 0.000 2.227 ENE 0.000 0.000 0.136 0.000 0.227 0.682 0.227 0.000 0.000 1.273 E 0.000 0.091 0.045 0.045 0.136 0.227 0.000 0.000 0.000 0.545 ESE 0.000 0.045 0.182 0.318 0.273 0.909 0.182 0.000 0.091 2.000 SE 0.000 0.045 0.227 0.500 0.955 0.955 0.045 0.045 0.045 2.818 SSE 0.000 0.000 0.091 0.136 0.682 0.273 0.273 0.045 0.045 1.545 S 0.000 0.045 0.227 0.545 0.636 0.773 0.227 0.000 0.000 2.455 SSW 0.000 0.000 0.136 0.273 0.318 1.000 0.273 0.000 0.000 2.000 SW 0.000 0.000 0.227 0.409 0.364 0.682 0.000 0.045 0.000 1.727 WSW 0.000 0.000 0.136 0.273 0.409 0.318 0.000 0.000 0.000 1.136 W 0.000 0.000 0.182 0.364 0.318 0.500 0.045 0.045 0.000 1.455 WNW 0.000 0.045 0.091 0.182 0.091 0.182 0.091 0.000 0.000 0.682 NW 0.000 0.000 0.000 0.182 0.000 0.182 0.045 0.000 0.000 0.409 NNW 0.000 0.000 0.136 0.091 0.182 0.273 0.045 0.000 0.000 0.727 SUBTOTAL 0.000 0.364 1.864 3.455 4.864 8.864 4.864 1.636 0.364 26.273 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS E 578 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 578 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 9.70 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-158

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.045 0.000 0.091 0.045 0.227 0.455 0.091 0.000 0.955 NNE 0.000 0.045 0.045 0.000 0.091 0.364 0.545 0.545 0.000 1.636 NE 0.000 0.000 0.136 0.045 0.091 0.455 0.818 0.273 0.000 1.818 ENE 0.000 0.000 0.136 0.045 0.091 0.955 0.682 0.000 0.000 1.909 E 0.000 0.000 0.227 0.227 0.273 0.545 0.045 0.000 0.000 1.318 ESE 0.000 0.000 0.136 0.318 0.318 1.000 0.273 0.000 0.000 2.045 SE 0.000 0.091 0.545 0.636 0.455 0.955 0.091 0.000 0.000 2.773 SSE 0.000 0.045 0.364 0.318 0.409 0.409 0.000 0.000 0.000 1.545 S 0.000 0.000 0.182 0.045 0.136 0.227 0.000 0.000 0.000 0.591 SSW 0.000 0.000 0.136 0.136 0.045 0.000 0.227 0.000 0.000 0.545 SW 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 WSW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.045 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.136 WNW 0.000 0.045 0.136 0.091 0.045 0.000 0.000 0.000 0.000 0.318 NW 0.000 0.045 0.227 0.091 0.091 0.000 0.000 0.000 0.000 0.455 NNW 0.000 0.000 0.182 0.136 0.000 0.091 0.136 0.000 0.000 0.545 SUBTOTAL 0.000 0.500 2.545 2.227 2.136 5.227 3.273 0.909 0.000 16.818 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS F 370 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 370 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 8.80 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-159

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 2017 - SEP 30, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.045 0.000 0.000 0.091 0.045 0.000 0.182 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.227 0.091 0.000 0.318 NE 0.000 0.000 0.136 0.000 0.045 0.045 0.136 0.000 0.000 0.364 ENE 0.000 0.091 0.000 0.000 0.045 0.045 0.091 0.000 0.000 0.273 E 0.000 0.045 0.045 0.091 0.000 0.045 0.000 0.000 0.000 0.227 ESE 0.000 0.000 0.136 0.273 0.000 0.136 0.000 0.000 0.000 0.545 SE 0.000 0.000 0.091 0.136 0.091 0.045 0.000 0.000 0.000 0.364 SSE 0.000 0.045 0.136 0.091 0.045 0.000 0.000 0.000 0.000 0.318 S 0.000 0.045 0.045 0.091 0.045 0.000 0.000 0.000 0.000 0.227 SSW 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.091 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 WNW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 NNW 0.000 0.045 0.045 0.045 0.000 0.000 0.136 0.000 0.000 0.273 SUBTOTAL 0.000 0.273 0.727 0.909 0.318 0.318 0.682 0.136 0.000 3.364 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2200 TOTAL HOURS OF STABILITY CLASS G 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2200 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2017/10/13 MEAN WIND SPEED = 7.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-160

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT BROWNS FERRY NUCLEAR PLANT 2017 METEOROLOGICAL DATA TABLE 9D JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FOURTH QUARTER E-161

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.139 SSE 0.000 0.000 0.000 0.000 0.046 0.139 0.046 0.139 0.000 0.369 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.046 0.185 0.231 0.185 0.000 0.646 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 14.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-162

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.277 0.046 0.000 0.323 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.139 SE 0.000 0.000 0.000 0.000 0.046 0.231 0.092 0.000 0.000 0.369 SSE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 S 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.139 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.139 0.416 0.462 0.139 0.000 1.154 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS B 25 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 25 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 13.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-163

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.323 0.462 0.000 0.000 0.785 NNE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.046 0.000 0.185 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.185 0.092 0.231 0.092 0.000 0.646 SE 0.000 0.000 0.000 0.046 0.000 0.231 0.092 0.000 0.046 0.416 SSE 0.000 0.000 0.000 0.092 0.000 0.046 0.139 0.046 0.000 0.323 S 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.185 SW 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.139 WSW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 W 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 SUBTOTAL 0.000 0.000 0.000 0.185 0.231 1.200 1.200 0.185 0.046 3.047 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS C 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 66 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 12.33 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-164

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.139 0.369 2.447 2.447 0.139 0.000 5.633 NNE 0.000 0.000 0.185 0.323 0.508 0.877 0.508 0.046 0.000 2.447 NE 0.000 0.000 0.139 0.092 0.369 0.646 0.000 0.000 0.000 1.247 ENE 0.000 0.000 0.046 0.139 0.092 0.185 0.000 0.139 0.000 0.600 E 0.000 0.000 0.000 0.046 0.046 0.000 0.046 0.139 0.000 0.277 ESE 0.000 0.000 0.369 0.323 0.600 0.369 0.369 0.323 0.000 2.355 SE 0.000 0.000 0.092 0.600 0.369 0.785 0.923 0.646 0.369 3.786 SSE 0.000 0.046 0.323 0.508 0.369 0.508 1.200 0.508 0.231 3.693 S 0.000 0.000 0.277 0.092 0.139 0.462 0.600 0.323 0.231 2.124 SSW 0.000 0.000 0.369 0.323 0.185 0.139 0.231 0.231 0.046 1.524 SW 0.000 0.000 0.231 0.231 0.323 0.323 0.185 0.000 0.000 1.293 WSW 0.000 0.000 0.277 0.185 0.600 0.739 0.185 0.000 0.000 1.985 W 0.000 0.000 0.323 0.554 0.369 1.200 0.831 0.508 0.046 3.832 WNW 0.000 0.046 0.046 0.139 0.508 0.785 0.785 0.277 0.231 2.816 NW 0.000 0.046 0.185 0.092 0.369 0.739 1.339 0.831 0.139 3.740 NNW 0.000 0.000 0.092 0.046 0.092 1.477 1.939 0.277 0.000 3.924 SUBTOTAL 0.000 0.139 3.047 3.832 5.309 11.681 11.588 4.386 1.293 41.274 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS D 913 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 894 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 11.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-165

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.092 0.000 0.046 0.831 0.970 0.185 0.000 2.124 NNE 0.000 0.000 0.000 0.092 0.000 0.923 1.016 0.000 0.000 2.031 NE 0.000 0.000 0.092 0.046 0.046 0.877 0.369 0.000 0.000 1.431 ENE 0.000 0.000 0.139 0.092 0.185 0.139 0.046 0.000 0.000 0.600 E 0.000 0.092 0.046 0.046 0.185 0.092 0.092 0.000 0.000 0.554 ESE 0.000 0.046 0.000 0.231 0.092 0.462 1.616 0.139 0.000 2.585 SE 0.000 0.000 0.231 0.185 0.139 1.016 1.985 0.554 0.092 4.201 SSE 0.000 0.000 0.092 0.092 0.185 1.247 1.801 1.108 0.046 4.571 S 0.000 0.000 0.092 0.231 0.462 1.431 1.754 0.877 0.416 5.263 SSW 0.000 0.000 0.139 0.231 0.462 0.970 0.970 0.185 0.508 3.463 SW 0.000 0.000 0.046 0.554 0.462 1.247 0.139 0.000 0.046 2.493 WSW 0.000 0.000 0.092 0.139 0.277 0.646 0.185 0.046 0.000 1.385 W 0.000 0.000 0.092 0.046 0.046 0.462 0.277 0.000 0.000 0.923 WNW 0.000 0.046 0.046 0.092 0.046 0.323 0.231 0.000 0.000 0.785 NW 0.000 0.000 0.046 0.092 0.139 0.323 0.970 0.139 0.000 1.708 NNW 0.000 0.000 0.092 0.092 0.231 0.600 0.369 0.000 0.000 1.385 SUBTOTAL 0.000 0.185 1.339 2.262 3.001 11.588 12.789 3.232 1.108 35.503 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS E 781 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 769 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 12.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-166

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.277 1.247 0.092 0.000 1.616 NNE 0.000 0.000 0.092 0.000 0.000 0.092 0.646 0.092 0.000 0.923 NE 0.000 0.000 0.046 0.046 0.092 0.046 0.323 0.000 0.000 0.554 ENE 0.000 0.000 0.000 0.046 0.046 0.185 0.139 0.046 0.000 0.462 E 0.000 0.000 0.000 0.046 0.046 0.139 0.139 0.000 0.000 0.369 ESE 0.000 0.000 0.046 0.092 0.092 0.831 0.462 0.000 0.000 1.524 SE 0.000 0.000 0.046 0.092 0.139 1.293 0.739 0.046 0.000 2.355 SSE 0.000 0.000 0.046 0.139 0.092 0.877 0.462 0.000 0.000 1.616 S 0.000 0.000 0.092 0.046 0.185 0.231 0.277 0.092 0.000 0.923 SSW 0.000 0.000 0.000 0.139 0.046 0.139 0.231 0.000 0.000 0.554 SW 0.000 0.046 0.000 0.000 0.231 0.185 0.046 0.000 0.000 0.508 WSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.046 0.000 0.046 0.139 0.000 0.000 0.000 0.231 WNW 0.000 0.000 0.046 0.092 0.092 0.092 0.000 0.000 0.000 0.323 NW 0.000 0.000 0.000 0.000 0.092 0.277 0.046 0.000 0.000 0.416 NNW 0.000 0.000 0.046 0.000 0.000 0.369 0.323 0.046 0.000 0.785 SUBTOTAL 0.000 0.046 0.508 0.785 1.200 5.171 5.078 0.416 0.000 13.204 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS F 286 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 286 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 11.45 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-167

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 2017 - DEC 31, 2017 WIND WIND SPEED(MPH)

DIRECTION CALM 0.60-1.40 1.41-3.40 3.41-5.40 5.41-7.40 7.41-12.40 12.41-18.40 18.41-24.40 >=24.41 TOTAL N 0.000 0.000 0.046 0.139 0.000 0.092 0.092 0.046 0.000 0.416 NNE 0.000 0.000 0.092 0.139 0.000 0.185 0.046 0.000 0.000 0.462 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.046 0.139 0.046 0.185 0.000 0.000 0.416 E 0.000 0.000 0.000 0.092 0.000 0.092 0.000 0.000 0.000 0.185 ESE 0.000 0.000 0.000 0.092 0.277 0.323 0.000 0.000 0.000 0.693 SE 0.000 0.000 0.139 0.185 0.508 0.554 0.185 0.000 0.000 1.570 SSE 0.000 0.000 0.046 0.046 0.092 0.277 0.000 0.000 0.000 0.462 S 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.092 0.139 0.139 0.092 0.139 0.046 0.000 0.646 SUBTOTAL 0.000 0.000 0.416 0.923 1.200 1.801 0.739 0.092 0.000 5.171 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2197 TOTAL HOURS OF STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2018/02/20 MEAN WIND SPEED = 8.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E-168

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT ATTACHMENT 1 Deviations from ODCM Controls and Surveillance Requirements This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (ODCM). The ODCM requires that all deviations be reported in the Annual Radioactive Effluent Release Report.

During the reporting period, January 1, 2017 through December 31, 2017, there were no deviations to the ODCM.

E-169

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Attachment 2 2017 Inoperable Radiological Effluent Instrumentation Report This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (ODCM) Sections 1/2.1.1 and 1/2.1.2. The ODCM requires the exertion of best efforts to return inoperable instruments to operable status within 30 days. Failure to return such instruments to an operable status within the prescribed interval requires a description in the Annual Radioactive Effluent Release Report.

During the reporting period, January 1, 2017 through December 31, 2017, there were three radiological instruments inoperable for greater than 30 days.

The 0-FIC-77-60 Radwaste Discharge Valve Flow Loop was declared inoperable on 4/6/2017 during performance of 0-SI-4.8.A.1-1, Liquid Effluent Permit (CR 1281231, WO 118631674, LCOT# 0-077-ODCM-2017-0016). The 0-FIC-77-60 average flow rate was out of tolerance as per the Acceptance Criteria and calculations in 0-SI-4.8.A.1-1. The expected percent tolerance is +/- 8%, whereas the value determined as a result of the SI performance was 34% due to the average flow rate being outside the plus or minus 8% of flow rate calculated based on tank volume change over time (ODCM Table 2.1-1.d Channel Functional Test). Monitor declared operable per LCOT logs on 7/14/2017 (WO 118114405).

The 2-FCV-77-61 Radwaste Discharge Valve Flow Loop was declared inoperable on 7/14/2016 under LCOT# 2-077-ODCM-2016-0020. 2-SI-4.8.A.3, Automatic Isolation Logic Functional Test of Radwaste Discharge Valve, was not performed as scheduled because U-2 was on cooling towers. (CR 1190109)

On 11/14/2016, only partial performance with Attachment 3 of 2-SI-4.8.A.3 to be performed at a later date (WO 116798018, 118410520).

On 12/29/16,determination made that work could not be completed as scheduled due to on-going Radwaste upgrades. Performance of Attachment 3 and any other necessary sections of 2-SI-4.8.A.3 will be scheduled following completion of Radwaste upgrades (WO 118315571).

The 2-FCV-7761 Radwaste Discharge Valve Flow Loop still remains inoperable; this inoperability also places the 0-RM-90-130 (Liquid RW Effluent monitor) in a potential LCO if a liquid release is made through the U-2 CCW discharge canal . Per ODCM, A system, subsystem, train, component, or device shall be Operable or have Operability when it is capable of performing its specified function(s).

The 3-FCV-77-61 Radwaste Discharge Valve was declared inoperable on 6/18/2013 under LCOT# 3-77-ODCM-2013-0022 due to failed A/C steps during the performance of 3-SI-4.8.A.3,Automatic Isolation Logic Functional Test of Radwaste Discharge Canal Valve 3-FCV-77-61 (CR 946463 and WO 116248474).

The 3-FCV-7761 Radwaste Discharge Valve Flow Loop still remains inoperable; this inoperability also places the 0-RM-90-130 (Liquid RW Effluent monitor) in a potential LCO if a liquid release is made through the U-3 CCW discharge canal . Per ODCM, A system, subsystem, train, component, or device shall be Operable or have Operability when it is capable of performing its specified function(s).

E-170

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Groundwater Protection Program In 2007, the Nuclear Energy Institute (NEI) established the Groundwater Protection Initiative (GPI), NEI 07-07. The Groundwater Protection Initiative was established to 1) improve management of situations involving inadvertent radiological releases that get into groundwater and 2) to improve communication with external stakeholders to enhance trust and confidence on the part of local communities, States, the NRC, and the public in the nuclear industrys commitment to a high standard of public radiation safety and protection of the environment.

This section provides information and sample results from on-site groundwater locations that were sampled in support of the Groundwater Protection Initiative at Browns Ferry Nuclear Plant.

The groundwater wells described in this section are not part of the Radiological Environmental Monitoring Program (REMP).

In the early 2000s, BFN initiated a groundwater study to identify the source low levels of tritium detected on-site. Results from the groundwater study (Investigation of Tritium Releases to Groundwater Prepared by H. Julian June 2006), suggest the source of tritiated groundwater was from historical leaks and spills associated with Radwaste/Condensate transfer tunnel.

Groundwater and surface water level measurements during the study indicated the return channel and subsequently the Tennessee River will ultimately be recipient to tritiated groundwater discharge from the site. It has been determined that there are no groundwater wells onsite or within 2-miles of the site that are used as a source of drinking water.

Groundwater movement in the area has been determined to be from the plant site toward the Tennessee River.

Onsite groundwater monitoring was performed in 2017. The purpose of on-site groundwater monitoring is to ensure timely detection of inadvertent radiological releases to groundwater.

Non REMP groundwater wells monitor for potential leaks from plant equipment. As part of the GPI, BFN monitored a total of 16 groundwater wells located in the Protected Area and the Owner Controlled Area during 2017. Normal sampling frequencies are quarterly and semiannually with some wells sampled monthly if certain criteria are met or for investigation purposes. Samples are routinely analyzed for environmental level tritium (H-3) and principle gamma emitters (PGE) with selected wells analyzed for Hard-to-Detect (HTD) radionuclides (Gross Alpha, Fe-55, Ni-63, Sr-89, and Sr-90). In support of the groundwater program the site also monitors onsite storm drains, catch basins and surface water.

In 2017, low levels of tritium were detected in on-site groundwater wells as indicated in Table 10, Groundwater Data. This table demonstrates all on-site groundwater wells that indicated detectable tritium concentrations. Tritium concentrations ranged from non-detectable, at less than 270 pCi/L, up to a maximum concentration of 6,856 pCi/L. No other plant related radionuclides were detected in any groundwater well; No activity was detected in any surface water, catch basin, or storm drain in 2017. As determined in the 2006 Groundwater study, the estimated groundwater/channel water dilution ratio is 1:20,000 at a rate of approximately 0.5 gpm. Using the highest measured groundwater tritium concentration in 2017, 6,856 pCi/L, the aqueous tritium concentration in the channel, after dilution, would be 0.34 pCi/L. Assuming 0.34 pCi/L concentration at a release rate of 0.5 gpm for the entire year results in a total release of approximately 3.41E-07 Curies. This is a small fraction of the liquid radwaste releases and is a small fraction of the reported dose for 2017.

E-171

BROWNS FERRY NUCLEAR PLANT UNITS 1, 2, AND 3 2017 Annual Radioactive EFFLUENT Release REPORT Groundwater Protection Program There were no instances of any on-site spills or leaks that occurred during the reporting period that were communicated to offsite agencies. Groundwater well results were well below the voluntary communication reporting level of 20,000 pCi/L as established by the EPA Drinking Water Standard.

Table 10 - Groundwater Data Tritium Activity Sample Date Well ID (pCi/L) 1st Quarter 1/31/2017 Dewat-A 2,422 2/23/2017 Dewat-A 6,856 3/17/2017 Dewat-A 3,824 2/22/2017 MW-01 2,985 3/24/2017 MW-01 1,961 2/21/2017 MW-02 1,214 2/21/2017 MW-03 626 2/21/2017 MW-04 920 2/21/2017 MW-07 803 2/22/2017 MW-08 2,070 3/17/2017 MW-08 3,493 2/22/2017 MW-09 255 2nd Quarter 4/13/2017 Dewat-A 2,316 5/11/2017 Dewat-A 5,280 5/11/2017 MW-01 883 5/11/2017 MW-02 620 5/11/2017 MW-03 500 5/11/2017 MW-04 689 5/11/2017 MW-07 735 5/11/2017 MW-08 2,700 3rd Quarter 8/1/2017 Dewat-A 3,010 8/1/2017 MW-02 277 8/1/2017 MW-03 402 8/1/2017 MW-07 753 8/1/2017 MW-08 2,240 4th Quarter 11/15/2017 Dewat-A 1,460 11/15/2017 MW-01 1,050 11/15/2017 MW-02 427 11/15/2017 MW-03 400 11/15/2017 MW-04 236 11/14/2017 MW-07 1,350 11/16/2017 MW-08 1,350 E-172

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