ML13123A206

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Annual Radioactive Effluent Release Report - 2012
ML13123A206
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 04/30/2013
From: James Shea
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML13123A206 (64)
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Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 April 30, 2013 10 CFR 50.36a(a)(2) 10 CFR 50.4 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390

Subject:

ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT - 2012 Enclosed is the subject Annual Radioactive Effluent Release Report (ARERR) for the period of January 1, 2012 to December 31, 2012. This report (Enclosure 1)is being submitted as required by the respective Watts Bar Nuclear Plant (WBN), Unit 1, Technical Specification 5.9.3, which specifies that the report be submitted prior to May 1 st of each year. is divided into four principal sections. The first section provides the required effluent release data. Attachment 1 to Enclosure 1 documents any deviations which have occurred from Offsite Dose Calculation Manual (ODCM) requirements. Attachment 2 addresses any radioactive effluent monitoring instrumentation which was inoperable for greater than 30 days. Attachment 3 of Enclosure 1 provides a copy of Revision 23 of the ODCM. This revision was in effect as of February 12, 2010, and is provided in accordance with Technical Specification 5.7.2.3. addresses requirements of the Process Control Program (PCP) which are reported in conjunction with the ARERR in accordance with Section 2.4 of the PCP.

Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 April 30, 2013 There are no regulatory commitments in this letter. If you have any questions concerning this matter, please contact Donna Guinn, Site Licensing Manager, at (423) 365-1589.

Respectfully, J. W. Shea Vice President, Nuclear Licensing

Enclosures:

1. Annual Radioactive Effluent Release Report, 2012
2. Process Control Program Reporting Requirements cc (Enclosures):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Watts Bar Nuclear Plant Unit 1

Enclosure 1 Watts Bar Nuclear Plant Unit I Annual Radioactive Effluent Release Report - 2012 El-I

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT

1. Regulatory Limits A. Gaseous Effluents
1. Dose rates due to radioactivity released in gaseous effluents from the site to areas at and beyond the unrestricted area boundary shall be limited to the following:
a. Noble gases: - Less than or equal to 500 mrem/year to the total body.

- Less than or equal to,3000 mrem/year to the skin.

b. Iodine-131, iodine-133, tritium, and all radionuclides in particulate form with half-lives greater than 8 days:

- Less than or equal to 1500 mrem/year to any organ.

2. Air dose due to noble gases released in gaseous effluents to areas at and beyond the unrestricted area boundary shall be limited to the following:
a. Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation during any calendar quarter.
b. Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation during any calendar year.
3. Dose to a member of the public from iodine-1 31, iodine-1 33, tritium, and all radionuclides in particulate form with half-lives greater than eight days in gaseous effluents released to areas at and beyond the unrestricted area boundary shall be limited to the following:
a. Less than or equal to 7.5 mrem to any organ during any calendar quarter.
b. Less than or equal to 15 mrem to any organ during any calendar year.

B. Liquid Effluents

1. The concentration of radioactivity released in liquid effluents to unrestricted areas shall be limited to 10 times the concentrations specified in Title 10 of the Code of Federal Regulations, Part 20 (Standards for Protection against Radiation), Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0 E-04 ýiCi/ml total activity.
2. The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to:
a. Less than or equal to 1.5 mrem to the total body and less than or equal to 5 mrem to any organ during any calendar quarter.
b. Less than or equal to 3 mrem to the total body and less than or equal to 10 mrem to any organ during any calendar year.

E1-2

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION

2. Effluent Concentration Limits A. Liquids The Effluent Concentration Limits (ECL) for liquids are those listed in 10 CFR 20, Appendix B, Table 2, Column 2. For dissolved and entrained gases the ECL of 2.OE-04

[tCi/ml is applied. This ECL is based on the Xe-135 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.

B. Gaseous Concentration limits for gaseous releases are met through compliance with the maximum permissible dose rates for gaseous releases as defined in plant Offsite Dose Calculation Manual (ODCM) and presented in Section 1.A.1 of this report.

3. Average Energy Watts Bar Nuclear Plant's (WBN) 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. Therefore, the average beta and gamma energies (E) for gaseous effluents as described 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.
4. Measurements and Approximations of Total Radioactivity Radioactivity measurements performed in support of the WBN ODCM meet the Lower Limit of Detection requirements given in ODCM Tables 2.2-1 and 2.2-2.

A. Liquid Effluents Batch (Radwaste and Condensate Demineralizer tanks)

Total gamma isotopic and tritium concentrations are determined on each Radwaste batch tank prior to release. The total activity of a batch release is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide. The curies of each nuclide are then summed. Composite samples are maintained and analyzed monthly for gross alpha and quarterly for iron-55, strontium-89, and strontium-90. During periods of no significant identified primary to secondary leakage, composite samples are not maintained for batch releases from the Condensate Demineralizer Tank releases. During periods of no significant identified primary to secondary leakage or when the Condensate Demineralizer Tanks are discharged to the Turbine Building Station Sump, the feedwater tritium concentration is used to determine the curies of tritium released from Condensate Demineralizer Tank.

El -3

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Continuous Releases (Turbine Building Station Sump (TBSS), Steam Generator Blowdown (SGB), and Groundwater Sump (GWS))

During periods of no significant identified primary to secondary leakage, the volume released from the TBSS and SGB is obtained. The TBSS tritium concentration is determined via weekly grab samples. The feedwater tritium concentration is used to determine the curies of tritium released from SGB. The GWS is sampled monthly and analyzed for gross gamma and tritium on a monthly basis and for strontium-89 and strontium-90 on a quarterly basis.

The total activity released is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide.

Monitoring Wells WBN started conducting an investigation of tritium releases to the groundwater in 2003 due to identification of tritium in three of the four newly installed on-site monitoring wells associated with the December 2002 Department of Energy tritium production program site preparation activity. This study involved pressure testing of the radwaste discharge line, evaporation calculations of the Spent Fuel Pool (SFP) and Refueling Water Storage Tank (RWST), installation and sampling of groundwater wells, inspection of drain lines, boroscopic investigation of the SFP, and Fuel Transfer Canal leak collection system channels and drains.

In addition to the six (6) Radiologocial Environmental Monitoring Program (REMP) on-site groundwater monitoring wells, WBN also has 19 non-REMP monitoring wells to support monitoring the onsite groundwater plume for the presence or increase of radioactivity. WBN contracted with ARCADIS in 2004 to perform an investigation of the impact tritium had on groundwater and to perform a site characterization, area of impact, and preliminary human health and ecological risk screening. ARCADIS has been performing an updated site conceptual model since 2011. Comments are currently being resolved and the final report should be complete in 2013.

E1-4

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Monitoring Wells (Continued)

The on-site monitoring wells are sampled semi-annually for gamma and tritium. These wells continue to exhibit a downward trend. The tritium concentrations obtained in 2012 from these monitoring wells are listed below. The Well K sample was also analyzed for Sr-89, Sr-90, Fe-55, and Ni-63, with no detectable results.

06/26/2012 12/05/2012 Well ID Activity pCi/L Activity pCi/L A <270 <270 B 1,111 1,429 C 401 425 D 700 Dry E <270 <270 F <270 727 G <270 <270 H 1,555 Dry

<270 583 J 1,955 1,853 K 9,202 5,665 L 712 775 0 <270 <270 P <270 288 Q <270 <270 R 1461 1,822 S 508 <270 Doses from 1-131 Water Ingestion Pathway The radiological environmental monitoring program (REMP) specified in Table 3.12-1 from NUREG 1301, "Offsite Does Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors," April 1991, requires an 1-131 specific analysis for drinking water pathway samples if the annual dose from 1-131 is greater than 1 mrem. To evaluate the need for implementation of this additional analysis, the drinking water pathway dose from 1-131 to the maximum organ and age group was calculated. The results reported confirm that the drinking water pathway dose from 1-131 was only a small fraction of the 1 mrem limit and that the performance of the 1-131 specific analysis is not required for WBN REMP drinking water samples.

Quarter 1 2 3 4 Totals 1-131 Ci 0.OOE+00 0.OOE+00 0.OOE+00 O.OOE+00 0.OOE+00 Child/Thyroid (mrem) 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 0.OOE+00 Population/Thyroid (mrem) 0.OOE+00 0.OOE+00 0.OOE+00 0.00E+00 0.00E+00 E1-5

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT B. Gaseous Effluents Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded. Weekly grab samples from the Auxiliary Building and monthly grab samples from the Service Building are taken and analyzed to determine the quantity of noble gas activity released based on the total flows for the sample period. Also, noble gas samples are collected and evaluated following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour. Sampling is only required if dose equivalent 1-131 concentration in the primary coolant or if the noble gas activity monitor indicates that the containment activity has increased more than a factor of three.

The concentration of noble gases released through the Shield Building exhaust due to purging of containment is determined by using the purge monitor response in combination with containment air samples obtained prior to purge. The quantity of activity released during the purge is determined using the duration, flowrate, and concentration of noble gases for each purge. Also, noble gas samples are collected and evaluated for ongoing containment purges following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour. Sampling is only required if DEI concentration in the primary coolant or if the noble gas activity monitor shows that the containment activity has increased more than a factor of three.

The quantity of noble gases released through the Shield Building exhaust due to the batch release of waste gas decay tanks is determined by sampling each tank prior to release. The total activity released is determined from the total pressure change recorded for the tank during the release.

lodines and Particulates in Gaseous Releases Iodine and particulate activity are continuously sampled. Weekly charcoal and particulate samples are taken from the Shield Building exhaust and auxiliary building exhausts and from the Condenser Vacuum Exhaust during periods of primary to secondary leakage. These samples are analyzed at least weekly to determine the total activity released from the plant based on the total vent flows recorded for the sampling period. Also, when a primary to secondary leak exists, particulate and charcoal samples are taken from the Shield Building Exhausts, Auxiliary Building Exhaust, and Condenser Vacuum Exhaust once per 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for 7 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within one hour ifdose equivalent 1-131 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of three.

Carbon-14 in Gaseous Releases The carbon-14 production and effluent source term estimates were based on EPRI methodology provided in EPRI Report 1021106, "Estimation of Carbon-14 in Nuclear Power Plant Gaseous Effluents," dated December 2010. It was determined that 10.6 curies of carbon-14 is generated annually at WBN. However, only 98% is considered released as gas and only the carbon dioxide form (20%) of that is used in the gaseous dose calculations.

E1-6

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT

5. Batch Releases Value 1st Half 2nd Half Units A. Liquid (Radwaste only)
1. Number of releases 35 71 Each
2. Total time period of releases 4,853 14,330 Minutes
3. Maximum time period of release 405 760 Minutes
4. Average time period of releases 139 202 Minutes
5. Minimum time period for release 75 80 Minutes
6. Average dilution stream flow during 25,845 21,871 CFS release periods B. Gaseous (Batches only - containment purges, and waste gas decay tanks)
1. Number of releases 19 23 Each
2. Total time period of releases 23,400 78,597 Minutes
3. Maximum time period for release 10962 28,157 Minutes
4. Average time period for releases 1232 3,417 Minutes
5. Minimum time period for release 5 4 Minutes
6. Abnormal Releases Value Units 1st Half 2nd Half A. Liquid Number of Releases 0 0 Total Activity Released 0.OOE+00 0.OOE+00 Ci B. Gaseous Number of Releases 0 0 Total Activity Released 0.00E+00 0.OOE+00 Ci E1-7

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-A Liquid Effluents - Summation of All Releases During the period Starting: 1-Jan-2012 Ending: 30-Jun-2012 Est. Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release (Not Including Tritium, Ci 3.77E-03 6.52E-03 25%

Gases, Alpha)

2. Average Diluted Concentration During PCi/mi 3.34E-10 7.08E-10 Period
3. Percent Of Applicable Limit  %*
1. Total Release Ci 5.10E+01 3.35E+02 18%
2. Average Diluted Concentration During pCi/ml 5.90E-06 2.26E-05 Period
3. Percent Of Applicable Limit  %

C. Dissolved And Entrained Gases

1. Total Release Ci 0.00E+00 3.63E-06 39%
2. Average Diluted Concentration During PCi/mI 0.00E+00 2.45E-13 Period
3. Percent Of Applicable Limit  % 0.00E+00 1.23E-07 D. Gross Alpha Radioactivity
1. Total Release Curies O.OOOE+00** O.OOOE+00 N/A**

E. Total Waste Volume Released Liters 1.13E+10 2.31 E+09 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 3.13E+08 9.20E+09 12%

G. Radwaste Volume Released Liters 5.95E+05 7.07E+05 12%

Zeroes in this table indicate that no radioactivity was present at detectable levels.

  • Applicable limits are expressed in terms of dose. See Table 7A of this report.
    • N/A - Errors in measurements are not reported for these values, because none were identified during the reporting period.

E1-8

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-B Liquid Effluents - Summation of All Releases During the period Starting: 1-Jul-2012 Ending: 31-Dec-2012 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release (Not Including Ci 1.74E-02 1.09E-02 25%

Tritium, Gases, Alpha)

2. Average Diluted Concentration PCi/ml 1.82E-09 9.23E-10 During Period
3. Percent Of Applicable Limit  %*
1. Total Release Ci 2.24E+03 8.84E+01 18%
2. Average Diluted Concentration pCi/ml 1.27E-04 6.96E-06 During Period
3. Percent Of Applicable Limit  %

C. Dissolved And Entrained Gases

1. Total Release Ci 1.76E-02 1.95E-05 39%
2. Average Diluted Concentration pCi/mI 9.96E-10 1.54E-12 During Period
3. Percent Of Applicable Limit  % 4.98E-04 7.68E-07 D. Gross Alpha Radioactivity
1. Total Release Ci O.OOE+00** O.0OE+00 N/A**

E. Total Waste Volume Released Liters 2.08E+08 2.70E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 9.55E+09 1.18E+10 12%

G. Radwaste Volume Released Liters 1.93E+06 8.62E+05 12%

Zeroes in this table indicate that no radioactivity was present at detectable levels.

  • Applicable limits are expressed in terms of dose. See Table 7A of this report.
    • N/A - Errors in measurements are not reported for these values, because none were identified during the reporting period.

E11-9

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A Curies Released in Liquid Effluents During the period Starting: 1-Jan-2012 Ending: 31-Mar-2012 CONTINUOUS BATCH TOTAL H-3 2.99E-01 5.07E+01 5.10E+01 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 8.91E-06 8.91E-06 CO-58 O.OOE+00 5.02E-04 5.02E-04 CO-60 O.OOE+00 3.33E-04 3.33E-04 CS-134 O.OQE+00 3.19E-05 3.19E-05 CS-137 O.OQE+00 1.86E-04 1.86E-04 FE-55 O.OOE+00 2.36E-03 2.36E-03 MN-54 O.OE+00 1.1 5E-04 1.1 5E-04 SB- 125 O.O0E+00 2.14E-04 2.14E-04 AG-1 17M O.OOE+00 1.34E-06 1.34E-06 TOTALS O.OOE+00 3.77E-03 3.77E-03 DISSOLVED AND ENTRAINED GASES TOTALS O.OOE+00 O.OQE+00 O.OOE+00

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

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2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B Curies Released in Liquid Effluents During the period Starting: 1-Apr-2012 Ending: 30-Jun-2012 CONTINUOUS BATCH TOTAL H-3 1.17E-02 3.35E+02 3.35E+02 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 5.38E-06 5.38E-06 CO-58 O.OOE+00 2.21E-04 2.21E-04 CO-60 O.OOE+00 2.33E-04 2.33E-04 CS-137 O.OOE+00 7.82E-07 7.82E-07 FE-55 O.OOE+00 5.41 E-03 5.41 E-03 MN-54 O.OOE+00 1.79E-05 1.79E-05 SB-125 O.OOE+00 6.22E-04 6.22E-04 SR-89 O.OOE+00 4.69E-05 5.38E-06 TOTALS O.OOE+00 6.52E-03 6.52E-03 DISSOLVED AND ENTRAINED GASES XE-1 33 O.OOE+00 3.63E-06 3.63E-06 TOTALS O.OOE+00 3.63E-06 3.63E-06

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

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2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-C Curies Released in Liquid Effluents During the period Starting: 1-Jul-2012 Ending: 30-Sep-2012 CONTINUOUS BATCH TOTAL H-3 1.59E-02 2.24E+03 2.24E+03 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 9.69E-06 9.69E-06 CO-58 O.OOE+00 1.05E-03 1.05E-03 CO-60 O.OOE+00 6.19E-04 6.19E-04 CR-51 0.OOE+00 8.42E-05 8.42E-05 CS-1 37 O.OOE+00 2.26E-05 2.26E-05 FE-55 O.0OE+00 1.43E-02 1.43E-02 MN-54 O.OOE+00 2.08E-05 2.08E-05 NB-95 O.OOE+00 4.73E-06 4.73E-06 SB-125 0.OOE+00 6.13E-04 6.13E-04 SR-89 O.OOE+00 6.32E-04 6.32E-04 TOTALS O.0OE+00 1.74E-02 1.74E-02 DISSOLVED AND ENTRAINED GASES XE-131M O.OOE+00 7.57E-05 7.57E-05 XE-133 O.OOE+00 1.67E-02 1.67E-02 XE-1 33M O.OOE+00 2.95E-04 2.95E-04 XE-1 35 O.0OE+00 5.05E-04 5.05E-04 TOTALS O.OOE+00 1.76E-02 1.76E-02

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-12

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-D Curies Released in Liquid Effluents During the period Starting: 1-Oct-2012 Ending: 31-Dec-2012 CONTINUOUS BATCH TOTAL H-3 5.62E-02 8.83E+01 8.84E+01 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 8.64E-07 8.64E-07 CO-58 O.OE+00 2.39E-03 2.39E-03 CO-60 O.OOE+00 2.94E-04 2.94E-04 CR-51 O.OOE+00 2.20E-04 2.20E-04 FE-55 O.OE+00 7.80E-03 7.80E-03 MN-54 O.OE+00 1.15E-06 1.15E-06 NB-95 0.OE+00 5.40E-06 5.40E-06 SB-125 O.OOE+00 3.99E-05 3.99E-05 SR-89 0.OOE+00 1.70E-04 1.70E-04 TOTALS O.OOE+00 1.09E-02 1.09E-02 DISSOLVED AND ENTRAINED GASES XE-1 33 O.OOE+00 1.95E-05 1.95E-05 TOTALS O.OOE+00 1.95E-05 1.95E-05

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-13

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-A Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jan-2012 Ending: 30-Jun-2012 Est. Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release Ci 8.39E-01 4.33E+01 22
2. Average Release Rate For Period pCi/sec 1.06E-01 5.51E-01
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci O.OOOE+00 0.OOOE+00 N/A**
2. Average Release Rate For Period pCi/sec O.OOE+00 0.OOOE+00
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci 1.30E-03 1.78E-03 15
2. Average Release Rate For Period pCi/sec 1.65E-04 2.26E-04 0.000E+00
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOOE+00 N/A**

D. Tritium

1. Total Release Ci 7.75E+00 6.45E+00 11
2. Average Release Rate For Period pCi/sec 9.89E-01 8.21 E-01
3. Percent Of Applicable Limit  %*
1. Total Release Ci 2.72E+00 2.72E+00 N/A
2. Average Release Rate For Period pCi/sec 3.44E-01 3.46E-02
3. Percent Of Applicable Limit Zeroes in this table indicate that no radioactivity was present at detectable levels.
  • Applicable limits are expressed in terms of dose. See Table 6A of this report.
    • N/A - Errors in measurements are not reported for these values, because none were identified during the reporting period.

E1-14

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-B Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jul-2012 Ending: 31-Dec-2012 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release Ci 4.19E+00 2.29E+00 22
2. Average Release Rate For Period pCi/sec 5.27E-01 2.88E-01
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci 7.63E-07 O.OOOE+00 N/A
2. Average Release Rate For Period pCi/sec 9.60E-8 O.OOOE+00
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci 1.59E-05 O.OOOE+00 15
2. Average Release Rate For Period pCi/sec 2.OOE-06 O.OOOE+00
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOOE+00 **N/A D. Tritium
1. Total Release Ci 1.14E+01 3.23E+01 11
2. Average Release Rate For Period pCi/sec 1.44E+00 4.07E+00
3. Percent Of Applicable Limit  %*
1. Total Release Ci 2.04E+00 1.82E+00 N/A
2. Average Release Rate For Period pCi/sec 2.57E-01 2.29E-01
3. Percent Of Applicable Limit Zeroes in this table indicate that no radioactivity was present at detectable levels.
  • Applicable limits are expressed in terms of dose. See Table 6A of this report.
    • N/A - Errors in measurements are not reported for these values, because none were identified during the reporting period.

El-15

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-A Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jan-2012 Ending: 31-Mar-2012 CONTINUOUS BATCH TOTAL FISSION GASES KR-85 0.OOE+00 3.44E-07 3.44E-07 XE-131M 0.OOE+0O 2.91 E-04 2.91 E-04 XE-133M 0.OOE+O0 3.08E-04 3.08E-04 XE-135 4.20E-02 6.53E-03 4.85E-02 XE-133 0.OOE+00 1.57E-01 1.57E-01 AR-41 0.OOE+O0 6.32E-01 6.32E-01 TOTALS 4.20E-02 6.39E-01 8.38E-01 IODINES O.OOE+00 0.OOE+0O 0.OOE+00 PARTICULATES BR-82 1.54E-07 O.OOE+00 1.54E-07 MN-54 4.11 E-06 O.OOE+00 4.11 E-06 CO-58 8.84E-06 0.OOE+00 8.84E-06 CO-60 4.58E-05 O.OOE+00 4.58E-05 TOTALS 5.89E-05 O.OOE+O0 5.89E-05 H-3 7.75E+00 O.OOE+00 7.75E+00 C-14 (Total) 2.72E+00 0.OOE+00 2.72E+00 C-14 (C02 Form) 5.44E-01 O.OOE+00 5.44E-01

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-16

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-B Curies released in Gaseous Ground Level Releases During the period Starting: 1-Apr-2012 Ending: 30-Jun-2012 CONTINUOUS BATCH TOTAL FISSION GASES KR-85 O.OOE+0O 5.74E-07 5.74E-07 XE-1 35 3.15E-02 2.73E-02 5.88E-02 XE-1 33 O.OOE+00 2.63E-01 2.63E-01 AR-41 O.OOE+0O 4.01 E+00 4.01 E+O0 TOTALS 3.15E-02 4.30E+00 4.33E+00 IODINES O.OOE+00 O.OOE+00 O.OOE+O0 PARTICULATES BR-82 1.19E-06 O.OOE+00 1.19E-06 TOTALS 1.19E-06 O.OOE+0O 1.19E-06 H-3 6.45E+00 4.27e-1 1 1.04E+01 C-14 (Total) 2.72E+00 O.OOE+O0 2.72E+00 C-14 (C02 Form) 5.43E-01 O.OOE+O0 5.43E-01

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-17

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-C Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jul-2012 Ending: 30-Sep-2012 CONTINUOUS BATCH TOTALS FISSION GASES XE-1 35 0.OOE+00 3.81 E-02 3.81 E-02 XE-1 33 0.00E+00 3.52E-01 3.52E-01 AR-41 0.OOE+00 3.80E+00 3.80E+00 TOTALS 0.OOE+00 4.19E+00 4.19E+00 IODINES 1-131 7.63E-07 0.OOE+00 7.63E-07 1-132 2.37E-05 0.OOE+00 2.37E-05 TOTALS 2.45E-05 0.OOE+00 2.45E-05 PARTICULATES BR-82 2.78E-06 0.OOE+00 2.78E-06 CR-51 7.51 E-06 0.OOE+00 7.51 E-06 CO-58 8.41 E-06 0.OOE+00 8.41 E-06 TOTALS 1.87E-05 0.OOE+00 1.87E-05 H-3 1.12E+01 2.67E-01 1.15E+01 C-14 (Total) 2.04E+00 0.OOE+00 2.04E+00 C-14 (C02 Form) 4.07E-01 0.OOE+00 4.07E-01

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-18

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-D Curies released in Gaseous Ground Level Releases During the period Starting: 1-Oct-2012 Ending: 31-Dec-2012 CONTINUOUS BATCH TOTALS FISSION GASES KR-85 O.OOE+00 2.65E-07 2.65E-07 XE-1 31M O.OOE+00 1.36E-04 1.36E-04 XE-133 O.OE+00 2.37E-02 2.37E-02 AR-41 O.00E+00 3.85E-01 3.85E-01 TOTALS O.OOE+00 4.09E-01 4.09E-01 IODINES 1-131 7.62E-06 O.OOE+00 7.62E-06 1-132 9.48E-06 0.OOE+00 9.48E-06 TOTALS 1.71 E-05 0.OOE+00 1.71 E-05 PARTICULATES CO-58 1.88E-06 0.OOE+00 1.88E-06 CR-51 3.OOE-06 O.00E+00 3.O0E-06 TOTALS 4.89E-06 O.OOE+00 4.89E-06 H-3 1.75E+01 5.16E+00 2.27E+01 C-14 (Total) 1.82E+00 O.OOE+00 1.82E+00 C-14 (C02 Form) 3.63E-01 O.0OE+00 3.63E-01

  • Zeroes in this table indicate that no radioactivity was present at detectable levels.

El-19

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-A SOLID WASTE (RADIOACTIVE SHIPMENTS)

A. Solid Waste Shipped Offsite for Burial or Disposal (not Irradiated Fuel) 12 Month Est. (Ci)

1. Type of Waste Unit Period Error %
a. Spent resins, filters, sludges, evaporator m3 3.27 N/A bottoms, etc. Ci 16.1 +/-25%
b. Dry Active Waste, Compressible Waste m3 102.0 N/A Contaminated Equipment, etc. Ci 0.248 +/-25%

m3

c. Irradiated Components, Control 0.0 N/A Rods, etc. Ci 0.0 N/A
2. Estimate of Major Nuclide Composition (by type of waste)

(PercentCutoff = 1.0 percent)

Percent Ci

a. Spent resins, filter sludges, evaporator bottoms, etc.

(nuclides determined by measurement)

H-3 2.969 4.77E-01 Mn-54 6.463 1.04E-00 Fe-55 41.77 6.72E+00 Co-58 1.111 1.79E-01 Co-60 31.05 4.99E+00 Ni-63 12.36 1.99E+00 Sb-125 2.901 4.66E-01

b. Dry active waste, compressible waste, contaminated equipment, etc. (nuclides determined by estimate)

Percent Ci Mn-54 2.57 6.35E-03 Fe-55 46.48 1.15E-01 Co-58 1.38 3.42E-03 Co-60 28.54 7.07E-02 Ni-63 15.27 3.78E-02 Nb-95 1.44 3.57E-03 Sb-1 25 1.42 3.52E-03

c. Irradiated Components None N/A E1-20

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-B SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 14 Motor Freight Energy Solutions Facility - Clive, UT
4. Irradiated Fuel Shipments (Disposition)

Number of Shipments Type Quantity Mode of Transportation Destination None N/A N/A N/A

5. Solidification of Waste Was solidification performed? No If yes, solidification media: N/A El-21

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Introduction Potential doses to maximum individuals and the population around WBN are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated using meteorological data and riverflow data measured during the period. In this report, the doses resulting from releases are described and compared to limits established for WBN.

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.

Dose Calculations Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code (QWATA)). These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.113) 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. Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 6A, 6B, 7A, and 7B.

Doses From Airborne Effluents For airborne effluents, 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 eaten by milk and beef animals.

Airborne DischargePoints All releases from WBN are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from wind speeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters, as presented for each quarter on pages E1-33 through E1-60.

E1-22

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact MeteorologicalData Meteorological variables at WBN are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46, and 91 meters above the ground.

Quarterly JFDs are calculated for each release point using the appropriate levels of meteorological data. A JFD provides the percentage of the time in a quarter 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 non-calm wind directions less than 0.7 m/s (1.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

External Exposure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the WBN ODCM. The highest of these doses is then selected.

Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.

Organ Dose Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables.

Doses from applicable pathways are calculated for each real 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. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. Because specific data on beef animals was not available, the location of the highest beef dose for all receptors within an age group will be considered the beef dose for each receptor within that age group. 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.

Doses from airborne effluents are presented in Tables 6A and 6B.

El-23

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Land Use Survey 2012 Land Use Survey Receptor Receptor Distance GPS Coordinates Terrain Adj.

Number Type* Sector (m) N W Factor 1 NR N 4590 35.64356 84.79812 1.5 2 NR NNE 3750 35.63226 84.77014 1.8 3 NR NE 3399 35.62474 84.76412 2.3 4 NR ENE 3072 35.61506 84.75984 1.9 5 NR E 3263 35.60587 84.75439 1.7 6 NR ESE 4654 35.58139 84.74604 1.8 7 NR SE 1409 35.59439 84.77861 1.5 8 NR SSE 1646 35.58963 84.78191 1.5 9 NR S 1550 35.58879 84.79047 1.8 10 NR SSW 1832 35.58690 84.79567 1.9 11 NR SW 4141 35.58118 84.82758 2.0 12 NR WSW 2422 35.59270 84.81403 1.7 13 NR W 2901 35.60557 84.82218 1.1 14 NR WNW 1448 35.60967 84.80387 2.5 15 NR NW 2065 35.61308 84.80929 1.5 16 NR NNW 4376 35.63792 84.81208 1.0 17 NG N 6658 35.66260 84.79348 1.0 18 NG NNE 5030 35.64057 84.75969 1.6 19 NG NE 3793 35.62840 84.76258 2.2 20 NG ENE 4847 35.62769 84.74628 1.6 21 NG E 4656 35.60406 84.73881 1.6 22 NG ESE 4931 35.58282 84.74158 1.8 23 NG SE 1409 35.59439 84.77861 1.5 24 NG SSE 1711 35.58799 84.78504 1.5 25 NG S 3535 35.57100 84.79110 2.0 26 NG SSW 8100 N/A N/A 1.4 27 NG SW 8100 N/A N/A 1.7 28 NG WSW 3080 35.59324 84.82214 1.7 29 NG W 3138 35.60768 84.82446 1.1 30 NG WNW 2963 35.61725 84.81780 2.2 31 NG NW 2065 35.61308 84.80929 1.5 32 NG NNW 4607 35.64017 84.81224 1.0 33 MC ESE 6889 35.57698 84.72101 1.7 34 MC SSW 2286 35.58312 84.49693 2.0 35 MC SSW 3353 35.63895 84.58937 2.0

  • NR: Nearest Residence, NG: Nearest Garden, MC: Milk Cow New locations and Terrain Adjustment Factors are represented by being bolded.

El-24

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact 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 concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of WBN. Parameters used to determine the doses are based on guidance given by the NRC (in Regulatory Guide 1.109) for maximum ingestion rates, exposure times, etc. Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the WBN ODCM.

Liquid Release Points and River Data Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. All routine liquid releases from WBN, located at Tennessee River Mile 528.5, 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-tenth 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 Tennessee River Mile 510.0.

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 plant outfall.

The maximum 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 (Chickamauga Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (Dayton, TN). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from WBN, is an individual who obtains all of his drinking water at Dayton, TN, consumes fish caught from the Tennessee River between WBN and Chickamauga 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 below the outfall from WBN.

Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented in Tables 7A and 7B, along with the average river flows past the plant site for the periods.

Population Doses Population doses for highest exposed organ due to airborne effluents are calculated for an estimated 1,066,600 persons 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 consumes milk, vegetables, and meat produced within the sector annulus in which he resides. Doses from external pathways and inhalation are based on the 50-mile human population distribution.

Population doses for total body and the maximum exposed organ 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.

El-25

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact 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 actual recreational data on the number of shoreline visits at downstream locations.

Population dose estimates for airborne and liquid effluents are presented in Tables 6A, 6B, 7A and 7B.

Direct Radiation External gamma radiation levels were measured by Landauer InLight environmental dosimeters deployed around WBN as part of the offsite Environmental Radiological Monitoring Program. The quarterly gamma radiation levels determined from these dosimeters during this reporting period averaged 17.0 mR/quarter at onsite (at or near the site boundary) stations and 15.25 mR/quarter at offsite stations or 1.75 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoperation and construction phases of the WBN plant site where the average radiation levels onsite were generally 2-8 mR/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 dosimeters 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.

Dose To A Member Of The Public Inside The Unrestricted Area Boundary As stated in the WBN ODCM, an evaluation of the dose to a member of the public inside the unrestricted area boundary is performed for a hypothetical TVA employee who works just outside the restricted area boundary for an entire work year (2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />). Results from onsite quarterly dosimeter measurements indicated that the highest annual dosimeter reading outside Radiological Control Areas was 90 mrem. Using this value, subtracting an annual background value of approximately 68.0 mrem/year (see previous section), and multiplying by the ratio of the occupancy times (2000/8760), the highest external dose to a member of the public inside the unrestricted area boundary would be 5.02 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this report would not add a significant amount to this measured dose. This dose is below the 10 CFR 20 annual limit of 100 mrem.

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

The annual dose to any organ other than thyroid for the maximum individual is conservatively estimated 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 radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

E1-26

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact The annual thyroid dose to the maximum 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 environmental monitoring program. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance. Cumulative annual total doses are presented in Table 8.

E1-27

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 6-A Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 1.90E-03 mrad 5 mrad < 1% E/1280 meters Beta Air 7.62E-04 mrad 10 mrad < 1% E/1280 meters Submersion Total Body 1.08E-03 mrem N/A N/A SE/1409 meters Skin 1.48E-03 mrem N/A N/A SE/1409 meters Organ Doses 1 (Max) Child/Bone 5.15E-01 mrem 7.5 mrem 6.87% SE/1409 meters Child/Thyroid 1.10E-01 mrem 7.5 mrem 1.47% SE/1409 meters Child/Total Body 1.10E-01 mrem 7.5 mrem 1.47% SE/1409 meters Population Doses Total Body Dose 2.09E-01 man-rem Maximum Organ Dose (organ) 9.31E-01 man-rem (bone)

Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.09E-02 mrad 5 mrad < 1% ESE/1250 meters Beta Air 7.63E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 7.42E-03 mrem N/A N/A SE/1409 meters Skin 1.10E-02 mrem N/A N/A SE/1409 meters Organ Doses1 (Max) Child/Bone 1.01 E+00 mrem 7.5 mrem 13.46% SE/1409 meters Child/Thyroid 2.24E-01 mrem 7.5 mrem 2.99% SE/1409 meters Child/Total Body 2.24E-01 mrem 7.5 mrem 2.99% SE/1409 meters Population Doses Total Body Dose 2.42E-01 man-rem Maximum Organ Dose (organ) 1.01 E+00 man-rem (bone)

Populationdoses can be compared to the naturalbackground dose for the entire 50-mile population of about 150, 000 man-rem/year (basedon 140 mrem/yr for naturalbackground).

'Organ Doses include contributions from Carbon 14 as carbon dioxide E1-28

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 6-B Doses from Airborne Effluents Third Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.39E-02 mrad 5 mrad < 1% ESE/1250 meters Beta Air 8.78E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 9.13E-03 mrem N/A N/A SE/1409 meters Skin 1.35E-02 mrem N/A N/A SE/1409 meters Organ Doses 1 (Max) Child/Bone 9.48E-01 mrem 7.5 mrem 12.64% SE/1409 meters Child/Thyroid 2.19E-01 mrem 7.5 mrem 2.92% SE/1409 meters Child/Total Body 2.19E-01 mrem 7.5 mrem 2.92% SE/1409 meters Population Doses Total Body Dose 1.54E-01 man-rem Maximum Organ Dose (organ) 6.24E-01 man-rem (bone)

Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.20E-03 mrad 5 mrad < 1% ESE/1250 meters Beta Air 7.94E-04 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 9.26E-04 mrem N/A N/A SE/1409 meters Skin 1.37E-03 mrem N/A N/A SE/1409 meters Organ Doses 1 Child/Bone 8.52E-01 mrem 7.5 mrem 11.7% SE/1409 meters Child/Thyroid 2.15E-01 mrem 7.5 mrem 2.87% SE/1409 meters Child/Total Body 2.15E-01 mrem 7.5 mrem 2.87% SE/1409 meters Population Doses Total Body Dose 2.10E-01 man-rem Maximum Organ Dose (organ) 7.14E-01 man-rem (bone)

Populationdoses can be compared to the natural background dose for the entire 50-mile population of about 150,000 man-rem/year(based on 140 mrem/yr for naturalbackground).

'Organ Doses include contributions from Carbon 14 as carbon dioxide El-29

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 7-A Doses from Liquid Effluents First Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Adult Total Body 3.50E-04 1.5 mrem < 1%

Child Bone 4.40E-04 5 mrem < 1%

Child Thyroid 1.90E-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 41,649 Population Doses Total Body Dose 1.OOE-02 man-rem Maximum Organ Dose (organ) 1.OOE-02 man-rem (bone)

Second Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 4.50E-03 1.5 mrem < 1%

Child Bone 4.50E-3 5 mrem < 1%

Child Thyroid 4.50E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 10,041 Population Doses Total Body Dose 2.90E-01 man-rem Maximum Organ Dose (organ) 2.90E-01 man-rem (Bone)

Populationdoses can be compared to the naturalbackground dose for the entire 50-mile population of about 150,000 man-rem/year (basedon 140 mrem/yr for naturalbackground).

E1-30

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 7-B Doses from Liquid Effluents Third Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 1.50E-02 1.5 mrem <1%

Child Bone 1.50E-02 5 mrem < 1%

Child Thyroid 1.50E-02 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 19,611 Population Doses Total Body Dose 9.70E-01 man-rem Maximum Organ Dose (organ) 9.70E-01 man-rem (bone)

Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 5.20E-04 1.5 mrem <1%

Child Bone 5.90E-04 5 mrem < 1%

Child Thyroid 5.1OE-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 24,130 Population Doses Total Body Dose 3.10E-02 man-rem Maximum Organ Dose (organ) 3.10E-02 man-rem (bone)

Populationdoses can be compared to the naturalbackground dose for the entire 50-mile population of about 150, 000 man-rem/year (based on 140 mrem/yr for naturalbackground).

E1-31

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 8 Total Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter, Quarter Quarter Total Body or any Organ (except thyroid)

Total body air 1.95E-04 6.39E-04 4.68E-03 4.90E-03 (submersion)

Critical organ dose 5.05E-01 4.11E-01 1.18E+00 1.24E+00 (airborne)

Total body dose 1.50E-03 1.90E-03 3.04E-04 7.80E-04 (liquid)

Maximum organ 1.50E-03 3.30E-03 3.04E-04 8.1OE-04 dose (liquid)

Direct Radiation O.0OE+00 O.OOE+00 O.OOE+00 0.OOE+00 Dose Total 5.08E-01 4.17E-01 1.19E+00 1.25E+00 Cumulative Total Dose (mrem) 3.36E+00 Annual Dose Limit (mrem) 25 Percent of Limit 13.43%

Thyroid Total body air 1.95E-04 6.39E-04 4.68E-03 4.90E-03 (submersion)

Thyroid dose 1.05E-01 1.OOE-01 2.77E-01 3.18E-01 (airborne)

Total body dose 1.50E-03 1.90E-03 3.04E-04 7.80E-04 (liquid)

Thyroid dose 1.50E-03 1.10E-03 2.90E-04 7.80E-04 (liquid)

Total 1.08E-01 1.04E-01 2.82E-01 3.24E-01 Cumulative Total Dose (mrem) 8.19E-01 Annual Dose Limit (mrem) 75 Percent of Limit 1.09%

E1-32

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-I.9 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.184 0.092 0.046 0.000 0.000 0.000 0.367 NNE 0.000 0.000 0.046 0.138 0.3067 0.00 0.000 0.000 0.000 0.551 NE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.0000 0.000 0.046 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.000 0.0000 0. 000 0.000 0.000 0.000 0.0O0 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 0.092 0.092 0.000 0.000 0.000 0.184 SSW 0.000 0.000 0.000 0.046 0.276 0.230 0.000 0.000 0.000 0.551 SW 0.000 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.138 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 0.046 0.092 0.092 0.000 0.000 0.230 NW 0.000 0.000 0.000 0.046 0.000 0.092 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.000 0.092 0.138 0.230 0.000 0.000 0.000 0.459 SUBTOTAL 0.000 0.000 0.092 0.551 1.194 0.827 0.092 0.000 0.000 2.756 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS A 60 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 60 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 6.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-33

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 -=24.5 TOTAL N 0.000 0.000 0.000 0.322 0.092 0.184 0.000 0.000 0.000 0.597 NNE 0.000 0.000 0.092 0.138 0.092 0.367 0.000 0.000 0.000 0.689 NE 0.000 0.000 0.000 0. 184 0.000 0.046 0.000 0.000 0.000 0.230 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 0.000 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 0.046 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.230 0.138 0.000 0.000 0.000 0.367 SSW 0.000 0.000 0.000 0.092 0.322 0.276 0.000 0.000 0.000 0.689 SW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.138 W 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 WNW 0.000 0.000 0.000 0.000 0.046 0.138 0.092 0.000 0.000 0.276 NW 0.000 0.000 0.000 0.000 0.184 0.138 0.092 0.000 0.000 0.413 NNW 0.000 0.000 0.000 0.000 0.092 0.046 0.046 0.000 0.000 0.184 SUBTOTAL 0.000 0.000 0.092 0.735 1.332 1.424 0.230 0.000 0.000 3.813 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS B 83 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 83 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 7.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-34

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/1O0 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0 .000 0.000 0.000 0.092 0.138 0.046 0.000 0.000 0.000 0.276 NNE 0.000 0.000 0.230 0.046 0.092 0.184 0.000 0.000 0.000 0.551 NE 0.000 0.000 0.092 0.092 0.046 0.000 0.000 0.000 0.000 0.230 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 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 0.322 0.138 0.092 0.000 0.000 0.000 0.551 SSW 0.000 0.000 0.000 0.781 0.413 0.046 0.046 0.000 0.000 1.286 SW 0.000 0.000 0.000 0.230 0.138 0.046 0.000 0.000 0.000 0.413 WSW 0.000 0.000 0.000 0.184 0.138 0.046 0.000 0.000 0.000 0.367 0.000 0.000 0.000 0.046 0.000 0.184 0.000 0.000 0.000 0.230 WNW 0.000 0.000 0.000 0.046 0.230 0.046 0.000 0.000 0.000 0.322 NW 0.000 0.000 0.000 0.092 0.138 0.092 0.092 0.000 0.000 0.413 NNW 0.000 0.000 0.046 0.046 0.046 0.000 0.092 0.000 0.000 0.230 SUBTOTAL 0.000 0.000 0.367 2.113 1.516 0.827 0.230 0.000 0.000 5.053 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS C 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 A1D 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 6.35 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-35

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.092 0.551 0.781 0.873 0.781 0.046 0.000 0.000 3.124 NNE 0.000 0.000 0.919 0.781 0.597 0.505 0.000 0.000 0.000 2.802 NE 0.000 0.000 0.367 0.551 0.046 0.092 0.000 0.000 0.000 1.056 ENE 0.000 0.046 0.413 0.138 0.000 0.000 0.000 0.000 0.000 0.597 E 0.000 0.184 0.322 0.046 0.092 0.000 0.000 0.000 0.000 0.643 ESE 0.000 0.138 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.276 SE 0.000 0.000 0.459 0.092 0.000 0.000 0.000 0.000 0.000 0.551 SSE 0.000 0.000 0.459 0.551 0.184 0.092 0.000 0.000 0.000 1.286 S 0.000 0.046 0.689 0.827 0.322 0.735 0.000 0.000 0.000 2.618 SSW 0.000 0.138 1.332 2.205 1.378 1.654 0.138 0.000 0.000 6.844 SW 0.000 0.000 1.011 1.332 0.276 0.046 0.000 0.000 0.000 2.664 WSW 0.000 0.276 0.367 0.643 0.184 0.413 0.000 0.000 0.000 1.883 W 0.000 0.000 0.459 0.230 0.230 0.597 0.000 0.000 0.000 1.516 WNW 0.000 0.000 0.276 0.138 0.551 0.551 0.046 0.000 0.000 1.562 NW 0.000 0.092 0.184 0.276 0.551 0.735 0.138 0.000 0.000 1.975 NNW 0.000 0.000 0.322 0.322 0.643 1.332 0.184 0.000 0.000 2.802 SUBTOTAL 0.000 1.011 8.268 8.911 5.926 7.533 0.551 0.000 0.000 32.200 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS D 701 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 701 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 5.43 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-36

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<- 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.689 0.643 0.322 0.046 0.000 0.000 0.000 1.700 NNE 0.000 0.092 0.781 0.322 0.092 0.046 0.000 0.000 0.000 1.332 NE 0.000 0.092 0.459 0.505 0.046 0.000 0.000 0.000 0.000 1.102 ENE 0.000 0.092 0.459 0.000 0.000 0.000 0.000 0.000 0.000 0.551 E 0.000 0.138 0.459 0.000 0.000 0.000 0.000 0.000 0.000 0.597 ESE 0.000 0.322 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.597 SE 0.000 0.230 0.046 0.046 0.000 0.000 0.00 0.000 0.000 0.322 SSE 0.000 0.184 0.322 0.092 0.000 0.000 0.000 0.000 0.000 0.597 S 0.000 0.413 0.827 0.505 0.276 0.230 0.000 0.000 0.000 2.251 SSW 0.000 0.276 2.480 1.424 1.608 1.102 0.046 0.000 0.000 6.936 SW 0.000 0.322 2.159 0.367 0.230 0.046 0.000 0.000 0.000 3.124 WSW 0.000 0.551 0.735 0.184 0.184 0.000 0.000 0.000 0.000 1.654 W 0.000 0.689 0.781 0.138 0.230 0.046 0.000 0.000 0.000 1.893 WNW 0.000 0.184 0.781 0.184 0.138 0.138 0.000 0.000 0.000 1.424 NW 0.000 0.138 0.367 0.689 0.643 0.413 0.000 0.000 0.000 2.251 NNW 0.000 0.092 0.459 0.597 0.459 0.138 0.000 0.000 0.000 1.746 SUBTOTAL 0.000 3.813 12.081 5.696 4.226 2.205 0.046 0.000 0.000 28.066 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS E 611 TOTAL HOURS OF VALID WIND DIPECTION-WIND SPEED-STABILITY CLASS E 611 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLA4T STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED; 2012/05/21 MEAN WIND SPEED = 3.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-37

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T1 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.184 0.322 0.000 0.000 0.000 0.000 0.000 0.000 0.505 NNE 0.000 0.138 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.322 NE 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.000 .0.184 ENE 0.000 0.230 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.322 E 0.000 0.322 0.230 0.000 0.000 0.000 0.000 0.000 0.000 0.551 ESE 0.000 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.184 SE 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.184 S 0.000 0.092 0.322 0.046 0.000 0.000 0.000 0.000 0.000 0.459 SSW 0.000 0.367 0.597 0.230 0.000 0.000 0.000 0.000 0.000 1.194 SW 0.000 0.459 1.148 0.000 0.000 0.000 0.000 0.000 0.000 1.608 WSW 0.000 0.965 0.827 0.046 0.000 0.000 0.000 0.000 0.000 1.837 w 0.000 0.597 0.597 0.046 0.000 0.000 0.000 0.000 0.000 1.240 WNW 0.000 1.056 0.919 0.000 0.000 0.000 0.000 0.000 0.000 1.975 NW 0.000 0.505 0.781 0.046 0.000 0.000 0.000 0.000 0.000 1.332 NNW 0.000 0.138 0.230 0.092 0.000 0.000 0.000 0.000 0.000 0.459 SUBTOTAL 0.000 5.512 6.431 0.505 0.000 0.000 0.000 0.000 0.000 12.448 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 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 2177 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 1.72 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-38

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2012 - MAR 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.001 0.276 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.461 NNE 0.001 0.230 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.276 NE 0.003 0.551 0.322 0.000 0.000 0.000 0.000 0.000 0.000 0.875 ENE 0.001 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.230 E 0.001 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.415 ESE 0.002 0.413 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.553 SE 0.001 0.322 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.415 SSE 0.001 0.230 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.276 S 0.002 0.551 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.645 SSW 0.002 0.689 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.829 SW 0.005 1.194 0.597 0.046 0.000 0.000 0.000 0.000 0.000 1.843 WSW 0.009 1.929 1.011 0.000 0.000 0.000 0.000 0.000 0.000 2.948 W 0.009 2.251 0.689 0.000 0.000 0.000 0.000 0.000 0.000 2.948 WNW 0.005 1.286 0.413 0.000 0.000 0.000 0.000 0.000 0.000 1.705 NW 0.002 0.413 0.367 0.000 0.000 0.000 0.000 0.000 0.000 0.783 NNW 0.001 0.322 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.461 SUBTOTAL 0.046 11.070 4.502 0.046 0.000 0.000 0.000 0.000 0.000 15.664 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2177 TOTAL HOURS OF STABILITY CLASS G 341 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 341 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2177 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2012/05/21 MEAN WIND SPEED = 1.30 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-39

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.550 0.642 0.550 0.000 0.000 0.000 1.788 NNE 0.000 0.000 0.046 0.917 0.596 0.413 0.000 0.000 0.000 1.972 NE 0.000 0.000 0.000 0.092 0.092 0.092 0.000 0.000 0.000 0.275 ENE 0.000 0.000 0.046 0.138 0.138 0.138 0.000 0.000 0.000 0.459 E 0.000 0.000 0.046 0.000 0.092 0.000 0.000 0.000 0.000 0.138 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 0.229 0.000 0.000 0.000 0.000 0.229 SSW 0.000 0.000 0.092 0.229 0.504 0.183 0.000 0.000 0.000 1.009 SW 0.000 0.000 0.000 0.275 0.092 0.000 0.000 0.000 0.000 0.367 WSW 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 W 0.000 0.000 0.046 0.000 0.092 0.000 0.000 0.000 0.000 0.138 WNW 0.000 0.000 0.000 0.092 0.092 0.046 0.000 0.000 0.000 0.229 NW 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.046 0.229 0.459 0.642 0.183 0.000 0.000 1.559 SUBTOTAL 0.000 0.000 0.413 2.659 3.072 2.063 0.183 0.000 0.000 8.391 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS A 183 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 183 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 6.41 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-40

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.138 0.138 0.092 0.000 0.000 0.000 0.413 NNE 0.000 0.000 0.092 0.504 0.321 0.183 0.000 0.000 0.000 1.100 NE 0.000 0.000 0.046 0.138 0.000 0.183 0.000 0.000 0.000 0.367 ENE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.00 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.092 0.138 0.092 0.000 0.000 0.000 0.321 SSW 0.000 0.000 0.000 0.825 0.504 0.138 0.000 0.000 0.000 1.467 SW 0.000 0.000 0.046 0.642 0.000 0.000 0.000 0.000 0.000 0.688 WSW 0.000 0.000 0.046 0.183 0.000 0.000 0.000 0.000 0.000 0.229 W 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.138 WNW 0.000 0.000 0.046 0.138 0.092 0.275 0.000 0.000 0.000 0.550 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 0.046 0.183 0.046 0.138 0.000 0.000 0.000 0.413 SUBTOTAL 0.000 0.000 0.459 3.072 1.330 1.100 0.000 0.000 0.000 5.961 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS B 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.44 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-41

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.138 0.092 0.138 0.046 0.000 0.000 0.000 0.413 NNE 0.000 0.000 0.046 0.138 0.046 0.092 0.000 0.000 0.000 0.321 NE 0.000 0.000 0.092 0.321 0.000 0.000 0.000 0.000 0.000 0.413 ENE 0.000 0.000 0.183 0.275 0.046 0.000 0.000 0.000 0.000 0.504 E 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.000 0.183 ESE 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.000 0.183 SSE 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.138 S 0.000 0.000 0.183 0.459 0.092 0.138 0.000 0.000 0.000 0.871 SSW 0.000 0.000 0.138 1.146 0.229 0.092 0.000 0.000 0.000 1.605 SW 0.000 0.000 0.504 0.688 0.046 0.000 0.000 0.000 0.000 1.238 WSW 0.000 0.000 0.183 0.183 0.000 0.000 0.000 0.000 0.000 0.367 W 0.000 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.138 WNW 0.000 0.000 0.046 0.092 0.138 0.229 0.000 0.000 0.000 0.504 NW 0.000 0.000 0.000 0.046 0.046 0.183 0.046 0.000 0.000 0.321 NNW 0.000 0.000 0.092 0.046 0.092 0.138 0.000 0.000 0.000 0.367 SUBTOTAL 0.000 0.000 1.788 4.035 0.917 0.917 0.046 0.000 0.000 7.703 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS C 168 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 168 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED - 4.83 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-42

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/O00 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4' 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0.275 0.779 0.688 0.459 0.000 0.000 0.000 2.247 NNE 0.000 0.000 0.367 0.459 0.275 0.550 0.000 0.000 0.000 1.651 NE 0.000 0.092 0.459 0.688 0.138 0.046 0.000 0.000 0.000 1.421 ENE 0.000 0.046 0.642 0.413 0.046 0.138 0.000 0.000 0.000 1.284 E 0.000 0.046 0.504 0.046 0.000 0.000 0.000 0.000 0.000 0.596 ESE 0.000 0.092 0.504 0.275 0.000 0.000 0.000 0.000 0.000 0.871 SE 0.000 0.000 0.275 0.138 0.046 0.000 0.000 0.000 0.000 0.459 SSE 0.000 0.046 0.917 0.321 0.000 0.000 0.000 0.000 0.000 1.284 S 0.000 0.183 1.376 1.421 0.550 0.138 0.000 0.000 0.000 3.668 SSW 0.000 0.229 1.559 0.917 0.642 0.275 0.000 0.000 0.000 3.622 SW 0.000 0.046 1.100 0.963 0.000 0.000 0.000 0.000 0.000 2.109 WSW 0.000 0.046 0.504 0.138 0.000 0.000 0.000 0.000 0.000 0.688 W 0.000 0.183 0.229 0.138 0.046 0.092 0.000 0.000 0.000 0.688 WNW 0.000 0.046 0.229 0.138 0.367 0.321 0.000 0.000 0.000 1.100 NW 0.000 0.046 0.275 0.183 0.183 0.229 0.046 0.000 0.000 0.963 NNW 0.000 0.000 0.138 0.459 0.459 0.550 0.000 0.000 0.000 1.605 SUBTOTAL 0.000 1.146 9.354 7.474 3.439 2.797 0.046 0.000 0.000 24.255 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS D 529 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 529 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 4.26 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-43

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0.734 0.917 0.642 0.046 0.000 0.000 0.000 2.384 NNE 0.000 0.046 0.459 0.092 0.046 0.046 0.000 0.000 0.000 0.688 NE 0.000 0.046 0.321 0.138 0.046 0.000 0.000 0.000 0.000 0.550 ENE 0.000 0.138 0.459 0.183 0.000 0.000 0.000 0.000 0.000 0.779 E 0.000 0.046 0.596 0.138 0.000 0.000 0.000 0.000 0.000 0.779 ESE 0.000 0.046 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.229 SE 0.000 0.138 0.275 0.092 0.000 0.000 0.000 0.000 0.000 0.504 SSE 0.000 0.275 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.459 S 0.000 0.504 1.421 0.367 0.046 0.000 0.000 0.000 0.000 2.338 SSW 0.000 0.642 1.605 0.917 0.321 0.000 0.000 0.000 0.000 3.485 SW 0.000 0.688 1.146 0.046 0.000 0.000 0.000 0.000 0.000 1.880 WSW 0.000 0.550 0.550 0.138 0.046 0.000 0.000 0.000 0.000 1.284 W 0.000 0.504 0.596 0.275 0.000 0.000 0.000 0.000 0.000 1.376 WNW 0.000 0.367 0.229 0.183 0.092 0.000 0.000" 0.000 0.000 0.871 NW 0.000 0.229 0.504 0.138 0.092 0.000 0.000 0.000 0.000 0.963 NNW 0.000 0.138 0.183 1.009 0.275 0.046 0.000 0.000 0.000 1.651 SUBTOTAL 0.000 4.402 9.445 4.631 1.605 0.138 0.000 0.000 0.000 20.220 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS E 441 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 441 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 2.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-44

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/S00 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.001 0.092 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.185 NNE 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.092 NE 0.001 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 ENE 0.005 0.138 0.321 0.046 0.000 0.000 0.000 0.000 0.000 0.509 E 0.003 0.138 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.001 0.046 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.003 0.183 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.278 S 0.006 0.275 0.275 0.000 0.000 0.000 0.000 0.000 0.000 0.556 SSW 0.011 0.688 0.413 0.092 0.000 0.000 0.000 0.000 0.000 1.203 SW 0.015 0.688 0.779 0.000 0.000 0.000 0.000 0.000 0.000 1.482 WSW 0.027 1.696 1.009 0.046 0.000 0.000 0.000 0.000 0.000 2.778 W 0.028 1.696 1.055 0.046 0.000 0.000 0.000 0.000 0.000 2.825 WNW 0.023 1.926 0.321 0.046 0.000 0.000 0.000 0.000 0.000 2.315 NW 0.010 0.596 0.413 0.092 0.000 0.000 0.000 0.000 0.000 1.111 NNW 0.004 0.000 0.367 0.046 0.000 0.000 0.000 0.000 0.000 0.416 SUBTOTAL 0.138 8.299 5.365 0.504 0.046 0.000 0.000 0.000 0.000 14.351 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS F 313 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 313 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 3 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.56 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-45

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT APR 1, 2012 - JUN 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.001 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NNE 0.003 0.183 0.092 0.000 0.000 0.000 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 0.001 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 E 0.001 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.001 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.093 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 0.004 0.183 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.371 SSW 0.006 0.459 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.510 SW 0.014 0.871 0.275 0.000 0.000 0.000 0.000 0.000 0.000 1.160 WSW 0.042 2.155 1.330 0.000 0.000 0.000 0.000 0.000 0.000 3.527 W 0.062 3.576 1.559 0.000 0.000 0.000 0.000 0.000 0.000 5.198 WNW 0.056 3.439 1.192 0.046 0.000 0.000 0.000 0.000 0.000 4.733 NW 0.033 2.017 0.688 0.000 0.000 0.000 0.000 0.000 0.000 2.738 NNW 0.004 0.275 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.325 SUBTOTAL 0.229 13.343 5.502 0.046 0.000 0.000 0.000 0.000 0.000 19.120 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2181 TOTAL HOURS OF STABILITY CLASS G 417 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 417 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2181 TOTAL HOURS CALM 5 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.27 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-46

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.412 0.366 0.046 0.000 0.000 0.000 0.824 NNE 0.000 0.000 0.046 0.595 0.275 0.092 0.000 0.000 0.000 1.007 NE 0.000 0.000 0.046 0.229 0.183 0.000 0.000 0.000 0.000 0.458 ENE 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.092 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 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.092 0.092 0.092 0.000 0.000 0.000 0.000 0.275 SSW 0.000 0.000 0.046 0.549 0.549 0.000 0.000 0.000 0.000 1.144 SW 0.000 0.000 0.046 0.595 0.092 0.000 0.000 0.000 0.000 0.732 WSW 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 W 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.137 WNW 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.137 NW 0.000 0.000 0.000 0.092 0.000 0.046 0.000 0.000 0.000 0.137 NNW 0.000 0.000 0.000 0.275 0.183 0.046 0.000 0.000 0.000 0.503 SUBTOTAL 0.000 0.000 0.366 3.158 1.785 0.229 0.000 0.000 0.000 5.538 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS A 121 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 121 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-47

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.183 0.183 0.000 0.000 0.000 0.000 0.366 NNE 0.000 0.000 0.092 0.320 0.275 0.046 0.000 0.000 0.000 0.732 NE 0.000 0.000 0.046 0.275 0.046 0.000 0.000 0.000 0.000 0.366 ENE 0.000 0.000 0.046 0.137 0.046 0.000 0.000 0.000 0.000 0.229 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 S 0.000 0.000 0.046 0.137 0.183 0.000 0.000 0.000 0.000 0.366 SSW 0.000 0.000 0.046 0.732 0.229 0.000 0.000 0.000 0.000 1.007 SW 0.000 0.000 0.000 0.503 0.000 0.000 0.000 0.000 0.000 0.503 WSW 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.137 W 0.000 0.000 0.046 0.137 0.046 0.000 0.000 0.000 0.000 0.229 WNW 0.000 0.000 0.000 0.137 0.137 0.000 0.000 0.000 0.000 0.275 NW 0.000 0.000 0.046 0.000 0.183 0.046 0.000 0.000 0.000 0.275 NNW 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.137 SUBTOTAL 0.000 0.000 0.366 3.066 1.327 0.092 0.000 0.000 0.000 4.851 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS B 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 4.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-48

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.092 0.275 0.046 0.000 0.000 0.000 0.000 0.412 NNE 0.000 0.000 0.092 0.183 0.137 0.000 0.000 0.000 0.000 0.412 NE 0.000 0.000 0.366 0.275 0.000 0.000 0.000 0.000 0.000 0.641 ENE 0.000 0.000 0.366 0.183 0.000 0.000 0.000 0.000 0.000 0.549 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 0.092 0.000 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.000 0.046 0.183 0.000 0.000 0.000 0.000 0.000 0.229 S 0.000 0.000 0.000 0.320 0.000 0.000 0.000 0.000 0.000 0.320 SSW 0.000 0.000 0.137 0.870 0.229 0.000 0.000 0.000 0.000 1.236 SW .0.000 0.000 0.275 0.641 0.000 0.000 0.000 0.000 0.000 0.915 WSW 0.000 0.000 0.046 0.183 0.000 0.000 0.000 0.000 0.000 0.229 W 0.000 0.000 0.092 0.320 0.000 0.000 0.000 0.000 0.000 0.412 WNW 0.000 0.000 0.046 0.183 0.092 0.092 0.000 0.000 0.000 0.412 NW 0.000 0.000 0.183 0.137 0.092 0.046 0.000 0.000 0.000 0.458 NNW 0.000 0.000 0.092 0.092 0.046 0.000 0.000 0.000 0.000 0.229 SUBTOTAL 0.000 0.000 1.876 3.982 0.641 0.137 0.000 0.000 0.000 6.636 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS C 145 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 145 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 4.22 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-49

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.366 0.366 0.137 0.000 0.000 0.000 0.000 0.870 NNE 0.000 0.000 0.275 0.458 0.046 0.046 0.000 0.000 0.000 0.824 NE 0.000 0.000 0.641 0.549 0.092 0.046 0.046 0.000 0.000 1.373 ENE 0.000 0.000 1.007 0.595 0.275 0.046 0.000 0.000 0.000 1.922 E 0.000 0.046 1.190 0.412 0.092 0.000 0.000 0.000 0.000 1.739 ESE 0.000 0.000 0.732 0.092 0.046 0.000 0.000 0.000 0.000 0.870 SE 0.000 0.137 1.007 0.320 0.046 0.000 0.000 0.000 0.000 1.510 SSE 0.000 0.183 1.190 0.092 0.092 0.000 0.000 0.000 0.000 1.556 S 0.000 0.137 1.144 1.510 0.229 0.000 0.000 0.000 0.000 3.021 SSW 0.000 0.366 2.426 2.197 0.320 0.000 0.000 0.000 0.000 5.309 SW 0.000 0.229 1.281 0.961 0.000 0.000 0.000 0.000 0.000 2.471 WSW 0.000 0.183 1.053 0.320 0.000 0.000 0.000 0.000 0.000 1.556 W 0.000 0.183 0.549 0.183 0.000 0.000 0.000 0.000 0.000 0.915 WNW 0.000 0.092 0.595 0.183 0.137 0.046 0.000 0.000 0.000 1.053 NW 0.000 0.092 0.275 0.046 0.183 0.229 0.000 0.000 0.000 0.824 NNW 0.000 0.046 0.320 0.229 0.137 0.046 0.000 0.000 0.000 0.778 SUBTOTAL 0.000 1.693 14.050 8.513 1.831 0.458 0.046 0.000 0.000 26.590 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS D 581 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 581 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED w 3.40 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-50

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.002 0.137 0.229 0.595 0.046 0.092 0.000 0.000 0.000 1.101 NNE 0.002 0.137 0.183 0.183 0.046 0.092 0.000 0.000 0.000 0.643 NE 0.004 0.000 0.641 0.320 0.092 0.046 0.000 0.000 0.000 1.102 ENE 0.004 0.092 0.549 0.229 0.046 0.000 0.000 0.000 0.000 0.919 E 0.003 0.137 0.412 0.092 0.046 0.000 0.000 0.000 0.000 0.690 ESE 0.002 0.137 0.229 0.092 0.000 0.000 0.000 0.000 0.000 0.460 SE 0.004 0.412 0.275 0.000 0.000 0.000 0.000 0.000 0.000 0.691 SSE 0.004 0.320 0.320 0.046 0.000 0.000 0.000 0.000 0.000 0.690 S 0.011 0.320 1.419 0.092 0.046 0.000 0.000 0.000 0.000 1.887 SSW 0.022 0.641 2.929 0.503 0.092 0.000 0.000 0.000 0.000 4.187 SW 0.017 0.915 1.876 0.229 0.046 0.000 0.000 0.000 0.000 3.084 WSW 0.015 1.098 1.327 0.046 0.000 0.000 0.000 0.000 0.000 2.486 W 0.018 1.556 1.281 0.275 0.000 0.000 0.000 0.000 0.000 3.130 WNW 0.015 1.465 0.870 0.183 0.092 0.046 0.000 0.000 0.000 2.669 NW 0.010 0.595 0.961 0.229 0.046 0.000 0.000 0.000 0.000 1.840 NNW 0.004 0.137 0.458 0.503 0.229 0.092 0.000 0.000 0.000 1.422 SUBTOTAL 0.137 8.101 13.959 3.616 0.824 0.366 0.000 0.000 0.000 27.002 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS E 590 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 590 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 3 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 2.39 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-51

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.275 NNE 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.137 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.183 E 0.000 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.183 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.046 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.275 SSW 0.000 0.549 0.641 0.000 0.000 0.000 0.000 0.000 0.000 1.190 SW 0.000 0.503 0.824 0.000 0.000 0.000 0.000 0.000 0.000 1.327 WSW 0.000 1.465 1.327 0.000 0.000 0.000 0.000 0.000 0.000 2.792 W 0.000 2.197 1.373 0.000 0.046 0.000 0.000 0.000 0.000 3.616 WNW 0.000 3.021 1.831 0.000 0.000 0.000 0.000 0.000 0.000 4.851 NW 0.000 1.922 0.961 0.046 0.000 0.000 0.000 0.000 0.000 2.929 NNW 0.000 0.092 0.458 0.092 0.000 0.000 0.000 0.000 0.000 0.641 SUBTOTAL 0.000 10.023 8.238 0.183 0.046 0.000 0.000 0.000 0.000 18.490 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS F 404 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 404 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.53 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-52

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2012 - SEP 30, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNE 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 NE 0.000 0.046 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SW 0.000 0.137 0.503 0.000 0.000 0.000 0.000 0.000 0.000 0.641 WSW 0.000 0.595 0.366 0.000 0.000 0.000 0.000 0.000 0.000 0.961 W 0.000 1.602 0.686 0.000 0.000 0.000 0.000 0.000 0.000 2.288 WNW 0.000 2.517 1.510 0.000 0.000 0.000 0.000 0.000 0.000 4.027 NW 0.000 1.465 0.824 0.000 0.000 0.000 0.000 0.000 0.000 2.288 NNW 0.000 0.229 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.366 SUBTOTAL 0.000 6.773 4.119 0.000 0.000 0.000 0.000 0.000 0.000 10.892 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2185 TOTAL HOURS OF STABILITY CLASS G 238 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 238 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2185 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.37 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-53

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.136 0.136 0.182 0.045 0.000 0.000 0.000 0.499 NNE 0.000 0.000 0.272 0.454 0.363 0.182 0.000 0.000 0.000 1.271 NE 0.000 0.000 0.182 0.182 0.091 0.045 0.000 0.000 0.000 0.499 ENE 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.182 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 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 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 0.091 0.000 0.000 0.000 0.091 SSW 0.000 0.000 0.045 0.091 0.227 0.000 0.000 0.000 0.000 0.363 SW 0.000 0.000 0.136 0.045 0.182 0.000 0.000 0.000 0.000 0.363 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 0.091 0.091 0.000 0.000 0.000 0.182 WNW 0.000 0.000 0.000 0.000 0.227 0.227 0.000 0.000 0.000 0.454 NW 0.000 0.000 0.000 0.045 0.045 0.182 0.000 0.000 0.000 0.272 NNW 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 SUBTOTAL 0.000 0.000 0.999 0.953 1.453 0.862 0.000 0.000 0.000 4.267 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS A 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.72 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-54

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.045 0.136 0.045 0.000 0.000 0.000 0.227 NNE 0.000 0.000 0.045 0.227 0.272 0.091 0.000 0.000 0.000 0.635 NE 0.000 0.000 0.136 0.136 0.000 0.045 0.000 0.000 0.000 0.318 ENE 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 E 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 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 0.000 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 0.045 0.000 0.000 0.000 0.000 0.000 0.045 SSW 0.000 0.000 0.000 0.091 0.227 0.091 0.000 0.000 0.000 0.409 SW 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.136 WSW 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.045 0.000 0.136 0.000 0.000 0.000 0.182 WNW 0.000 0.000 0.000 0.000 0.136 0.045 0.000 0.000 0.000 0.182 NW 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.091 NNW 0.000 0.000 0.045 0.000 0.091 0.182 0.000 0.000 0.000 0.318 SUBTOTAL 0.000 0.000 0.363 0.999 0.908 0.681 0.000 0.000 0.000 2.951 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS B 65 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 65 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-55

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.045 0.091 0.045 0.000 0.000 0.000 0.182 NNE 0.000 0.000 0.091 0.045 0.091 0.182 0.000 0.000 0.000 0.409 NE 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 ENE 0.000 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.182 E 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 ESE 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 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 0.045 0.000 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.045 0.182 0.091 0.091 0.000 0.000 0.000 0.409 SSW 0.000 0.000 0.000 0.272 0.091 0.045 0.000 0.000 0.000 0.409 SW 0.000 0.000 0.091 0.499 0.000 0.000 0.000 0.000 0.000 0.590 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 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.182 WNW 0.000 0.000 0.000 0.045 0.182 0.091 0.045 0.000 0.000 0.363 NW 0.000 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.091 NNW 0.000 0.000 0.045 0.000 0.045 0.000 0.000 0.000 0.000 0.091 SUBTOTAL 0.000 0.000 0.681 1.453 0.681 0.499 0.045 0.000 0.000 3.359 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SFEED-STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 5.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-56

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.363 0.681 1.180 0.999 0.000 0.000 0.000 3.223 NNE 0.000 0.045 0.409 0.635 0.681 0.272 0.000 0.000 0.000 2.043 NE 0.000 0.045 0.953 0.817 0.409 0.136 0.000 0.000 0.000 2.360 ENE 0.000 0.045 1.271 0.681 0.227 0.045 0.000 0.000 0.000 2.270 E 0.000 0.136 0.499 0.045 0.045 0.000 0.000 0.000 0.000 0.726 ESE 0.000 0.136 0.318 0.000 0.000 0.000 0.000 0.000 0.000 0.454 SE 0.000 0.045 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.272 SSE 0.000 0.091 0.681 0.136 0.000 0.000 0.000 0.000 0.000 0.908 S 0.000 0.045 1.089 0.545 1.099 0.409 0.000 0.000 0.000 3.177 SSW 0.000 0.272 1.589 1.589 1.044 0.227 0.000 0.000 0.000 4.721 SW 0.000 0.045 1.089 0.908 0.136 0.091 0.000 0.000 0.000 2.270 WSW 0.000 0.091 0.817 0.227 0.000 0.318 0.000 0.000 0.000 1.453 W 0.000 0.091 0.499 0.272 0.136 0.681 0.000 0.000 0.000 1.680 WNW 0.000 0.136 0.454 0.318 0.454 0.635 0.045 0.000 0.000 2.043 NW 0.000 0.000 0.499 0.318 0.454 0.862 0.000 0.000 0.000 2.133 NNW 0.000 0.091 0.182 0.454 0.953 1.271 0.000 0.000 0.000 2.951 SUBTOTAL 0.000 1.316 10.940 7.626 6.80.9 5.946 0.045 0.000 0.000 32.683 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS D 720 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 720 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 4.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-57

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.182 0.318 0.454 0.272 0.000 0.000 0.000 0.000 1.226 NNE 0.000 0.091 0.318 0.318 0.318 0.000 0.000 0.000 0.000 1.044 NE 0.000 0.136 0.545 0.409 0.091 0.136 0.000 0.000 0.000 1.316 ENE 0.000 0.136 0.363 0.227 0.000 0.091 0.000 0.000 0.000 0.817 E 0.000 0.091 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.272 ESE 0.000 0.091 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.272 SE 0.000 0.045 0.045 0.091 0.045 0.000 0.000 0.000 0.000 0.227 SSE 0.000 0.227 0.182 0.045 0.045 0.000 0.000 0.000 0.000 0.499 S 0.000 0.318 0.908 0.545 0.272 0.000 0.000 0.000 0.000 2.043 SSW 0.000 0.454 1.816 1.407 0.635 0.091 0.000 0.000 0.000 4.403 SW 0.000 0.681 1.089 0.272 0.091 0.045 0.000 0.000 0.000 2.179 WSW 0.000 0.862 1.044 0.136 0.000 0.136 0.000 0.000 0.000 2.179 W 0.000 0.409 0.862 0.363 0.136 0.000 0.000 0.000 0.000 1.770 WNW 0.000 0.681 0.726 0.363 0.409 0.045 0.000 0.000 0.000 2.224 NW 0.000 0.545 0.908 0.590 0.227 0.227 0.000 0.000 0.000 2.497 NNW 0.000 0.045 0.363 0.545 0.590 0.091 0.000 0.000 0.000 1.634 SUBTOTAL 0.000 4.993 9.850 5.765 3.132 0.862 0.000 0.000 0.000 24.603 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 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 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 3.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-58

2012 WATTS BAR NUCLEAR PLANT UNIT I EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.091 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.272 NNE 0.000 0.136 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.272 NE 0.000 0.045 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.227 ENE 0.000 0.091 0.272 0.000 0.000 0.000 0.000 0.000 0.000 0.363 E 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.136 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 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 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.136 SSW 0.000 0.182 0.545 0.045 0.000 0.045 0.000 0.000 0.000 0.817 SW 0.000 0.409 0.635 0.000 0.000 0.000 0.000 0.000 0.000 1.044 WSW 0.000 0.953 0.272 0.045 0.000 0.000 0.000 0.000 0.000 1.271 W 0.000 1.543 1.180 0.045 0.000 0.000 0.000 0.000 0.000 2.769 WNW 0.000 2.406 0.953 0.000 0.000 0.000 0.000 0.000 0.000 3.359 NW 0.000 1.498 1.135 0.091 0.000 0.000 0.000 0.000 0.000 2.724 NNW 0.000 0.409 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.681 SUBTOTAL 0.000 7.898 5.946 0.272 0.000 0.045 0.000 0.000 0.000 14.163 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS F 312 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 312 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.53 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-59

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2012 - DEC 31, 2012 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.005 0.545 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.595 NNE 0.002 0.182 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.229 NE 0.002 0.136 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.274 ENE 0.003 0.227 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.366 E 0.002 0.272 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.320 ESE 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.001 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.183 SSE 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.001 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.183 SSW 0.006 0.545 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.732 SW 0.006 0.590 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.823 WSW 0.016 1.725 0.363 0.000 0.000 0.000 0.000 0.000 0.000 2.104 W 0.034 3.450 0.999 0.000 0.000 0.000 0.000 0.000 0.000 4.483 WNW 0.032 3.223 0.908 0.000 0.000 0.000 0.000 0.000 0.000 4.162 NW 0.018 1.634 0.726 0.045 0.000 0.000 0.000 0.000 0.000 2.424 NNW 0.008 0.681 0.318 0.000 0.000 0.000 0.000 0.000 0.000 1.006 SUBTOTAL 0.136 13.618 4.176 0.045 0.000 0.000 0.000 0.000 0.000 17.975 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2203 TOTAL HOURS OF STABILITY CLASS G 396 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 396 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2203 TOTAL HOURS CALM 3 METEOROLOGICAL FACILITY: WATTS BAR NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL MEAN WIND SPEED = 1.20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-60

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 1 Deviations from ODCM Controls/Surveillance Requirements None El-61

2012 WATTS BAR NUCLEAR PLANT UNIT 1 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 2 Radioactive Effluent Monitoring Instrumentation Inoperable for Greater than 30 days None E1-62

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