Text

Annual Radioactive Effluent Release Report
	ML12124A216
Person / Time
Site:	Watts Bar
Issue date:	04/30/2012
From:	James Shea; Tennessee Valley Authority
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML12124A216 (63)
	v • d • e

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 April 30, 2012 10 CFR 50.4 10 CFR 50.36a(a)(2)

ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 1 Facility Operating License No. NPF-90 NRC Docket No. 50-390

Subject:

2011 Annual Radioactive Effluent Release Report Provided in Enclosure 1 is the Watts Bar Nuclear Plant (WBN) 2011 Annual Radioactive Effluent Release Report (ARERR). This report includes a summary of the required effluent release data and fulfills the requirements of Technical Specification 5.9.3 for the January 1, 2011, through December 31, 2011 period for WBN. Sections 2 through 6 of Enclosure 1, titled "Supplemental Information," are provided in accordance with Regulatory Guide 1.21, Revision 1, Appendix B, Section A.

Attachment 1 to Enclosure 1 documents deviations which have occurred from Offsite Dose Calculation Manual (ODCM) requirements. Attachment 2 to Enclosure 1 provides information on radiation monitors inoperable for greater than 30 days. Attachment 3 to Enclosure 1 is Revision 23 of the ODCM, in effect as of February 12, 2010 and provided in accordance with Technical Specification 5.7.2.3..

Enclosure 2 addresses requirements of the Process Control Program (PCP) which are reported in conjunction with the ARERR in accordance with Section 2.4.D.2 of the PCP.

There are no regulatory commitments in this letter. Please direct any questions concerning this matter to Kara M. Stacy, Program Manager at (423) 751-3489.

Reis tfully Shea Ma ager, Corporate Nuclear Licensing AO LA cc: See Page 2 Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 April 30, 2012

Enclosures:

1. 2011 Annual Radioactive Effluent Release Report

2. Process Control Program Reporting Requirements cc: (Enclosures):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 1 NRC Senior Resident Inspector - Watts Bar Nuclear Plant, Unit 2

Enclosure I Watts Bar Nuclear Plant 2011 Annual Radioactive Effluent Release Report E1-1

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION

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 gCi/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.

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2011 WATTS BAR NUCLEAR PLANT 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 RCi/mI is applied. This ECL is based on the Xe-1 35 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.

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION 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 Sr-89 and Sr-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 Montioring 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, preliminary human health and ecological risk screening and to prepare an updated site conceptual model. Although this update was previously identified for completion in 2011, it is now anticipated that the evaluations will be completed in 2012.

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 2011 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.

05/0412011 11/0912011 Well ID Activity pCiIL Activity pCiIL B dry 1976 C <280 343 F 1900 1358 H 1770 1026 1 <280 <280 J <280 959 K 9885 13363 L 7587 3305 R 2,388 2208 E1-4

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION Doses from 1-131 Water Ingestion Pathway The radiological environmental monitoring program (REMP) specified in Table 3.12-1 from NUREG 1301, "Offsite Dose 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 2.76E-6 0.OOE+00 0.OOE+00 0.0.0E+00 2.76E-06 Child/Thyroid (mrem) 1.40E-06 O.OOE+00 0.OOE+00 0.OOE+00 1.40E-06 Population/Thyroid (mrem) 9.2E-06 O.OOE+00 O.OOE+00 O.OOE+00 9.2E-06 E1-5

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION 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 dose equivalent 1-131 (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 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for 7 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within one hour if DEI 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.

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION

5. Batch Releases Value 1st Half 2nd Half Units A. Liquid (Radwaste only)

1. Number of releases 59 63 Each

2. Total time period of releases 7,007 8,011 Minutes.

3. Maximum time period of release 236 195 Minutes

4. Average time period of releases 60 72 Minutes

5. Minimum time period for release 60 72,103utes 32,103 32,103 CFS

6. Average dilution stream flow during release periods B. Gaseous (Batches only - containment purges, and waste gas decay tanks)

1. Number of releases 33 9 Each eid849of releases

2. Total time period 2.Ttltm 4,731 30,823 7,803 Minutes Minutes

3. Maximum time period for release 143 3,425 Minutes 31 4 Minutes

4. Average time period for releases release

5. Minimum time period for

6. Abnormal Releases Value Units 1st Half 2nd Half A. Liquid Number of Releases 0 0 Ci Total Activity Released 0.OOE+00 0.OOE+00 B. Gaseous Number of Releases 0 1 Total Activity Released 0.00E+00 2.20E-03" Ci

PORV's Release E1-7

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION ABNORMAL RELEASES Release Type: Gaseous (Steam)

Release Point: Unit 1 PORV's Date(s) of Release: 10/08/2011 0804 through 10/16/2011 0412 This evaluation is for the release to the environment that occurred from the Unit 1 PORV's following a reactor trip on October 08, 2011 to support #11 bearing maintenance. Following the reactor trip, the Steam Generator PORVs were open for periods of time during the following 8 days. The following is data used to determine the curies and dose impacts as a result of the release:

While all the PORVs were not open continuously during this period, the evaluation assumed the release was continuous from all four PORVs.

During Cycle 11, there have been no gamma emitting radionuclides identified in any Secondary Coolant samples.

The feedwater tritium results obtained on 10/03/2011 indicated a tritium concentration of 4.08E-06 pCi/ml. This tritium concentration is assumed to have been the initial concentration in all four steam generators with no additional tritium introduced into the generators during the release period. All of the tritium initially present in the generators was released through the PORVs during the event.

The volume of each steam generator was taken from Chemistry Manual Chapter 5.01. The listed normal water level value of 4750 ft3 was used as a conservative value. This calculation assumes that the total volume of all four generators was released and that all the tritium present in that initial volume was released. The calculation for the total tritium activity released is as follows:

4750 ft3/generator

2.832E+04 mi/ft3

4 generators = 5.38E+08 ml 4.08E-06 pCi/ml

5.380E+08 ml = 2.20E+03 pCi of H-3 or 2.20E-03 Ci of H-3 The activity of 2.20E-03 curies was added to the 4th Quarter Table 4-A, "Curies Released in Gaseous Ground Level Releases," and the 4th Quarter doses in Table 6-B, "Doses from Airborne Effluents."

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-A Liquid Effluents - Summation of All Releases During the period Starting: 1-Jan-2011 Ending: 30-Jun-2011 Est.

Tot Type Of Effluent Units Quarter I Quarter 2 Error A. Fission & Activation Products

1. Total Release (Not Including Tritium, Ci 1.32E-02 2.38E-01 25%

Gases, Alpha)

2. Average Diluted Concentration During pCi/ml 9.03E-08 4.36E-08 Period

3. Percent Of Applicable Limit %*

B. Tritium

1. Total Release Ci 4.04E+02 1.40E+02 18%

2. Average Diluted Concentration During PCi/ml 2.76E-03 2.56E-05 Period

3. Percent Of Applicable Limit %

C. Dissolved And Entrained Gases

1. Total Release Ci 1.50E-02 1.45E-04 39%

2. Average Diluted Concentration During PCi/ml 1.03E-07 2.65E-11 Period

3. Percent Of Applicable Limit % 5.13E-02 1.33E-05 D. Gross Alpha Radioactivity

1. Total Release Curies O.OOOE+00** O.OOOE+00 N/A**

E. Total Waste Volume Released Liters 1.52E+08 1.87E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 5.48E+08 5.46E+09 12%

G. Radwaste Volume Released Liters 1.16E+06 1.62E+06 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.

- k N/A - Errors in measurements are not reported for these values since none were identified during the reporting period.

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-B Liquid Effluents - Summation of All Releases During the period Starting: 1-Jul-2011 Ending: 31-Dec-2011 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release (Not Including Ci 8.24E-03 8.04E-03 25%

Tritium, Gases, Alpha)

2. Average Diluted Concentration pCi/ml 4.34E-10 8.66E-10 During Period

3. Percent Of Applicable Limit %*

B. Tritium

1. Total Release Ci 3.94E+01 2.40E+02 18%

2. Average Diluted Concentration pCi/ml 2.07E-06 2.59E-05 During Period

3. Percent Of Applicable Limit %

C. Dissolved And Entrained Gases

1. Total Release Ci 1.36E-04 3.40E-04 39%

2. Average Diluted Concentration pCi/ml 7.16E-12 3.66E-11 During Period

3. Percent Of Applicable Limit % 3.58E-06 1.83E-05 D. Gross Alpha Radioactivity

1. Total Release Ci 0.OOE+00** O.OOE+00 N/A**

E. Total Waste Volume Released Liters 2.88E+08 2.70E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 1.90E+10 9.28E+09 12%

G. Radwaste Volume Released. Liters 1.32E+06 1.44E+06 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 since none were identified during the reporting period.

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A Curies Released in Liquid Effluents During the period Starting: 1-Jan-2011 Ending: 31-Mar-2011 CONTINUOUS BATCH TOTAL H-3 8.97E-02 4.03E+02 4.04E+02 FISSION & ACTIVATION PRODUCTS C0-57 0.OOE+00 2.61 E-06 2.61 E-06 CO-58 0.OOE+00 1.03E-02 1.03E-02 CO-60 0.OOE+00 9.01 E-04 9.01 E-04 FE-55 0.OOE+00 1.07E-03 1.07E-03 MN-54 0.OOE+00 1.63E-04 1.63E-04 CS-137 0.OOE+00 1.37E-05 1.37E-05 SB-125 0.OOE+00 3.78E-04 3.78E-04 1-131 0.OOE+00 2.76E-06 2.76E-06 CR-51 0.OOE+00 2.94E-04 2.94E-04 NB-95 0.OOE+00 3.23E-05 3.23E-05 TOTALS 0.OOE+00 1.32E-02 1.32 E-02 DISSOLVED AND ENTRAINED GASES XE-133 0.OOE+00 1.49E-02 1.49E-02 XE-133M 0.OOE+00 2.13E-04 2.13E-04 XE-135 0.OOE+00 3.27E-04 3.27E-04 TOTALS 0.OOE+00 1.50E-02 1.50E-02

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

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B Curies Released in Liquid Effluents During the period Starting: 1-Apr-2011 Ending: 30-Jun-2011 CONTINUOUS BATCH TOTAL H-3 1.27E-01 1.40E+02 1.40E+02 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 5.50E-04 5.50E-04 CO-58 O.OOE+00 2.28E-01 2.28E-01 CO-60 O.00E+00 4.03E-03 4.03E-03 FE-55 O.OOE+00 1.72E-03 1.72E-03 MN-54 O.OOE+00 6.95E-05 6.95E-05 FE-59 O.OOE+00 5.46E-05 5.46E-05 SB-124 O.OOE+00 5.13E-04 5.13E-04 SB-1 25 O.OOE+00 9.65E-04 9.65E-04 CR-51 O.OOE+00 1.61 E-03 1.61 E-03 NB-95 O.OOE+00 1.44E-05 1.44E-05 ZN-65 O.OOE+00 3.36E-04 3.36E-04 MO-99 O.OOE+00 7.93E-06 7.93E-06 TC-99 O.OOE+00 7.93E-06 7.93E-06 TOTALS O.OOE+00 2.38E-01 2.38E-01 DISSOLVED AND ENTRAINED GASES XE-133 O.OOE+00 1.16E-04 1.16E-04 XE-i 35 O.OOE+00 2.88E-05 2.88E-05 KR-85 O.OOE+00 2.88E-05 2.88E-05 TOTALS O.OOE+00 1.45E-04 1.45E-04

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

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-C Curies Released in Liquid Effluents During the period Starting: 1-Jul-2011 Ending: 30-Sep-2011 CONTINUOUS BATCH TOTAL H-3 2.52E-01 3.91E+01 3.94E+01 FISSION & ACTIVATION PRODUCTS AG-11OM 0.OOE+00 8.25E-06 8.25E-06 CO-57 0.OOE+00 2.OOE-06 2.OOE-06 CO-58 0.OOE+00 1.36E-03 1.36E-03 CO-60 O.OOE+00 2.19E-04 2.19E-04 CR-51 0.OOE+00 4.42E-05 4.42E-05 CS-1 37 0.OOE+00 1.18E-05 1.1 8E-05 FE-55 O.OOE+00 2.17E-03 2.17E-03 MN-54 O.OOE+00 1.63E-05 1.63E-05 SB-124 0.OOE+00 2.07E-05 2.07E-05 SB-125 0.OOE+00 2.27E-04 2.27E-04 SR-89 0.OOE+00 4.17E-05 4.17E-05 TOTALS 0.OOE+00 8.24E-03 8.24E-03 DISSOLVED AND ENTRAINED GASES

-XE-133 0.OOE+00 1.36E-04 1.36E-04 XE-1 35 0.OOE+00 5.40E-07 5.40E-07 TOTALS 0.OOE+00 1.36E-04 1.36E-04

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

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-D Curies Released in Liquid Effluents During the period Starting: 1-Oct-2011 Ending: 31-Dec-2011 CONTINUOUS BATCH TOTAL H-3 2.47E-01 2.40E+02 2.40E+02 FISSION & ACTIVATION PRODUCTS CO-57 O.OOE+00 4.63E-06 4.63E-06 CO-58 O.OOE+00 8.27E-04 8.27E-04 CO-60 O.OOE+00 2.09E-04 2.09E-04 FE-55 O.OOE+00 6.89E-03 6.89E-03 MN-54 O.OOE+00 1.32E-05 1.32E-05 MO-99 O.OOE+00 3.74E-07 3.74E-07 NB-95 O.OOE+00 1.29E-06 1.29E-06 SB-125 O.OOE+00 3.99E-05 3.99E-05 TC-99M O.OOE+00 3.74E-07 3.74E-07 SR-89 O.OOE+00 5.84E-05 5.84E-05 TOTALS O.OOE+00 8.04E-03 8.04E-03 DISSOLVED AND ENTRAINED GASES XE-1 33 O.OOE+00 3.40E-04 3.40E-04

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

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-A Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jan-2011 Ending: 30-Jun-2011 Est. Tot Type Of Effluent Units Quarter 1 Quarter 2 Error %

A. Fission & Activation Products

1. Total Release Ci 8.62E-01 2.96E-01 22

2. Average Release Rate For Period pCi/sec 1.50E-02 2.70E-02

3. Percent Of Applicable Limit %*

B. Radioiodines

1. Total Iodine-131 Ci 1.68E-05 4.53E-05 N/A**

2. Average Release Rate For Period pCi/sec 1.02E-06 5.1OE-06

3. Percent Of Applicable Limit %*

C. Particulates

1. Particulates (Half-Lives>8 Days) Ci 0.OOOE+00 1.19E-03 15

2. Average Release Rate For Period pCi/sec 0.OOOE+00 1.09E-04 0.OOOE+00

3. Percent Of Applicable Limit %* *

4. Gross Alpha Radioactivity Ci 0.OOOE+00 0.OOOE+00 N/A**

D. Tritium

1. Total Release Ci 4.70E+00 1.04E+01 11

2. Average Release Rate For Period pCi/sec 2.84E-01 1.30E+00

3. Percent Of Applicable Limit %*

E. Carbon-14

1. Total Release Ci 2.63E+00 1.10E+00 N/A

2. Average Release Rate For Period pCi/sec 9.14E-03 2.OOE-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 since none were identified during the reporting period.

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2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-B Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jul-2011 Ending: 31-Dec-2011 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release Ci 2.13E+00 2.29E+00 22

2. Average Release Rate For Period pCi/sec 2.68E-01 2.88E-01

3. Percent Of Applicable Limit %*

B. Radioiodines

1. Total Iodine-131 Ci O.OOOE+00 O.OOOE+00 N/A

2. Average Release Rate For Period pCi/sec O.OOOE+00 O.OOOE+00

3. Percent Of Applicable Limit %*

C. Particulates

1. Particulates (Half-Lives>8 Days) Ci O.OOOE+00 O.OOOE+00 15

2. Average Release Rate For Period pCi/sec O.OOOE+00 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 1.96E+01 3.23E+01 11

2. Average Release Rate For Period pCi/sec 2.46E+00 4.07E+00

3. Percent Of Applicable Limit %*

E. Carbon-14

1. Total Release Ci 2.75E+00 2.52E+00 N/A

2. Average Release Rate For Period pCi/sec 6.93E-02 2.50E-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 since none were identified during the reporting period.

El-16

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-A Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jan-2011 Ending: 31-Mar-2011 CONTINUOUS BATCH TOTAL FISSION GASES AR-41 0.00E+00 1.63E-01 1.63E-01 XE-1 31M 0.00E+00 6.13E-01 6.13E-01 XE-1 33 0.OOE+00 8.26E-02 8.26E-02 XE-1 35 0.OOE+00 2.93E-03 2.93E-03 TOTALS 0.OOE+00 8.62E-01 8.62E-01 IODINES 1-131 1.48E-05 0.OOE+00 1.48E-05 1-133 2.02E-06 0.OOE+00 2.02E-06 TOTALS 1.68E-05 0.OOE+00 1.68E-05 PARTICULATES 0.OOE+00 0.OOE+00 0.OOE+00 H-3 4.70E+00 0.OOE+00 4.70E+00 C-14 (Total) 2.63E+00 0.OOE+00 2.63E+00 C-14 (C02 Form) 5.251 E-01 0.OOE+00 5.25E-01

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

El-17

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-B Curies released in Gaseous Ground Level Releases During the period Starting: 1-Apr-2011 Ending: 30-Jun-2011 CONTINUOUS BATCH TOTAL FISSION GASES AR-41 0.00E+00 1.66E-01 1.66E-01 KR-85 0.00E+00 4.59E-07 4.59E-07 XE-1 31M O.OOE+00 4.80E-04 4.80E-04 XE-133 0.00E+00 1.25E-01 1.25E-01 XE-1 33M 0.00E+00 4.88E-05 4.88E-05 XE-1 35 0.00E+00 4.43E-03 4.43E-03 TOTALS 0.OOE+00 8.62E-01 2.96E-01 IODINES 1-131 3.90E-05 0.OOE+00 3.90E-05 1-133 6.26E-06 0.OOE+00 6.26E-06 TOTALS 1.68E-05 0.OOE+00 4.53E-05 PARTICULATES CO-58 1.18E-03 0.OOE+00 1.18E-03 CO-60 1.16E-05 0.OOE+00 1.16E-05 MN-54 3.39E-06 0.OOE+00 3.39E-06 TOTALS 1.68E-05 0.OOE+00 1.19E-03 H-3 1.04E+01 0.OOE+00 1.04E+01 C-14 (Total) 1.10E+00 0.OOE+00 1.10E+00 C-14 (C02 Form) 2.19E-01 0.OOE+00 2.19E-01

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

El-18

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-C Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jul-2011 Ending: 30-Sep-2011 CONTINUOUS BATCH TOTALS FISSION GASES KR-85 0.00E+00 2.30E-07 2.30E-07 XE-1 33 0.00E+00 2.26E-01 2.26E-01 AR-41 0.OOE+00 1.91 E+00 1.91 E+00 TOTALS 0.OOE+00 2.13E+00 2.13E+00 IODINES 0.OOE+00 0.OOE+00 0.OOE+00 PARTICULATES BR-82 5.08E-07 0.OOE+00 5.08E-07 H-3 1.96E+01 0.OOE+00 1.96E+01 C-14 (Total) 2.75E+00 0.OOE+00 2.75E+00 C-14 (C02 Form) 5.51 E-01 0.OOE+00 5.51 E-01

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

E1-19

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-D Curies released in Gaseous Ground Level Releases During the period Starting: 1-Oct-2011 Ending: 31-Dec-2011 CONTINUOUS BATCH TOTALS FISSION GASES KR-85 O.OOE+00 4.59E-07 4.59E-07 XE-135. O.OOE+00 2.02E-02 2.02E-02 XE-1 33 O.OOE+00 3.43E-01 3.43E-01 AR-41 O.OOE+00 1.93E+00 1.93E+00 TOTALS O.OOE+00 2.29E+00 2.29E+00 IODINES O.OOE+00 O.OOE+00 O.OOE+00 PARTICULATES O.OOE+00 O.OOE+00 O.OE+00 H-3 3.23E+01 O.OOE+00 3.23E+01 C-14 (Total) 2.52E+00 O.OOE+00 2.52E+00 C-14 (C02 Form) 5.03E-01 O.OOE+00 5.03E-01

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

E1-20

2011 WATTS BAR NUCLEAR PLANT 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 11.7 N/A bottoms, etc. Ci 23.8 +/-25%

3

b. Dry Active Waste, Compressible Waste m 84.11 N/A Contaminated Equipment, etc. Ci 0.171 +/-25%

m3

c. Irradiated Components, Control 27.9 N/A Rods, etc. Ci 20.1 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 5.69 1.35E+00 Cr-51 1.47 3.50E-01 Mn-54 1.76 4.19E-01 Fe-55 13.09 3.11E+00 Co-58 22.96 5.46E+00 Co-60 11.03 2.62E+00 Ni-63 35.61 8.47E+00 Sb-125 5.13 1.22E+00 Cs-137 1.92 4.57E-01

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

Percent Ci Mn-54 2.75 4.69E-03 Fe-55 5.38 9.18E-02 Co-58 6.19 1.06E-02 Co-60 27.03 4.61 E-01 Ni-63 6.78 1.1 6E-02 Sb-125 1.34 2.29E-03

c. Irradiated Components None N/A N/A E1-21

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-B SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 20 Hittman Transport 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 E1-22

2011 WATTS BAR NUCLEAR PLANT 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 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 E1-32 through E1-59.

E1-23

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Meteorological Data 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 three possible contributing pathways: ingestion of cow 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, only those pathways that exist for each receptor are considered in the sum.

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.

Since specific data on beef animals were 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. 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.

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).

E1-24

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact 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 0.139 hours 8.267196e-4 weeks 1.9025e-4 months 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. 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.

El-25

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact 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 18.0 mR/quarter at onsite (at or near the site boundary) stations and 16.50 mR/quarter at offsite stations or 1.50 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 0.556 hours 0.00331 weeks 7.61e-4 months ). Results from onsite quarterly dosimeter measurements indicated that the highest annual dosimeter reading outside Radiological Control Areas was 85 mrem. Using this value, subtracting an annual background value of approximately 72.0 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 2.96 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.

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.

E1-26

2011 WATTS BAR NUCLEAR PLANT 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 4.01 E-04 mrad 5 mrad < 1% E/1280 meters Beta Air 3.68E-04 mrad 10 mrad < 1% ENE/1370 meters Submersion Total Body 1.95E-04 mrem N/A N/A SE/1372 meters Skin 3.41 E-04 mrem N/A N/A SE/1372 meters Organ Doses1 (Max) Child/Bone 5.05E-01 mrem 7.5 mrem 6.73% SE/1372 meters Child/Thyroid 1.05E-01 mrem 7.5 mrem 1.4% SE/I 372 meters Child/Total Body 1.05E-01 mrem 7.5 mrem 1.4% SE/1372 meters Population Doses Total Body Dose 1.49E-01 man-rem Maximum Organ Dose (organ) 6.93E-01 man-rem (bone)

Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 6.59E-04 mrad 5 mrad < 1% E/1 280 meters Beta Air 2.99E-04 mrad 10 mrad < 1% E/1 280 meters Submersion Total Body 6.39E-04 mrem N/A N/A SE/1 372 meters Skin 8.66E-04 mrem N/A N/A SE/1 372 meters Organ Doses 1 (Max) Child/Bone 4.11E-01 mrem 7.5 mrem 5.48% SE/i 372 meters Child/Thyroid 1.00E-01 mrem 7.5 mrem 1.33% SE/1372 meters Child/Total Body 1.O0E-01 mrem 7.5 mrem 1.33% SE/i 372 meters Population Doses Total Body Dose 1.19E-01 man-rem Maximum Organ Dose (organ) 4.35E-01 man-rem (bone)

Population doses 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).

1Organ Doses include contributions from Carbon-14 as carbon dioxide E1-27

2011 WATTS BAR NUCLEAR PLANT 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 7.97E-03 mrad 5 mrad <1% ESE/1250 meters Beta Air 2.93E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 4.68E-03 mrem N/A N/A SE/1372 meters Skin 6.91 E-03 mrem N/A N/A SE/1372 meters Organ Doses 1 (Max) Child/Bone 1.18E+00 mrem 7.5 mrem 15.73% SE/1372 meters Child/Thyroid 2.77E-01 mrem 7.5 mrem 3.96% SE/1372 meters Child/Total Body 2.77E-01 mrem 7.5 mrem 3.96% SE/1372 meters Population Doses Total Body Dose 2.36E-01 man-rem Maximum Organ Dose (organ) 9.21E-01 man-rem (bone)

Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 1.13E-02 mrad 5 mrad < 1% ESE/1250 meters Beta Air 4.28E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 4.90E-03 mrem N/A N/A SE/1 372 meters Skin 7.26E-03 mrem N/A N/A SE/1 372 meters Organ Doses 1 Child/Bone 1.24E+00 mrem 7.5 mrem 16.5% SE/i 372 meters Child/Thyroid 3.18E-01 mrem 7.5 mrem 4.24% SE/1372 meters Child/Total Body 3.18E-01 mrem 7.5 mrem 4.24% SE/1372 meters Population Doses Total Body Dose 2.82E-01 man-rem Maximum Organ Dose (organ) 9.51E-01 man-rem (bone)

Population doses 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).

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

2011 WATTS BAR NUCLEAR PLANT 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 Child Total Body 1.50E-03 1.5 mrem < 1%

Child Bone 1.50E-03 5 mrem < 1%

Child Thyroid 1.50E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 37,740 Population Doses Total Body Dose 9.02E-02 man-rem Maximum Organ Dose (organ) 9.02E-02 man-rem (bone)

Second Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 1.90E-03 1.5 mrem < 1%

Adult GIT 3.30E-3 5 mrem < 1%

Child Thyroid 1.1OE-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 26,465 Population Doses Total Body Dose 5.2E-02 man-rem Maximum Organ Dose (organ) 5.9E-02 man-rem (GIT)

Population doses 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).

E1-29

2011 WATTS BAR NUCLEAR PLANT 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 3.04E-04 1.5 mrem < 1%

Child Bone 3.04E-04 5 mrem < 1%

Child Thyroid 2.90E-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 20,479 Population Doses Total Body Dose 1.7E-02 man-rem Maximum Organ Dose (organ) 1.7E-02 man-rem (bone)

Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 7.80E-04 1.5 mrem < 1%

Child Bone 8.1OE-04 5 mrem < 1%

Child Thyroid 7.80E-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 39,777 Population Doses Total Body Dose 5.1 E-02 man-rem Maximum Organ Dose (organ) 5.1E-02 man-rem (bone)

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

E1-30

2011 WATTS BAR NUCLEAR PLANT 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.OOE+00 O.OOE+00 O.OOE+00 O.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 1.1OE-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%

E1-31

2011 WATTS BAR NUCLEAR PLANT 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 JAN 1, 2011 - MAR 31, 2011 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 2.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.093 0.326 0.186 0.000 0.000 0.000 0.605 NNE 0.000 0.000 0.000 0.000 0.047 0.093 0.000 0.000 0.000 0.140 NE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 ENE 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 E 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 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 0.800 0.000 0.000 0.419 0.000 0.000 0.000 0.419 SSW 0.000 0.000 0.000 0.000 0.698 0.838 0.000 0.000 0.000 1.536 SW 0.000 0.000 0.O00 0.093 0.372 0.186 0.000 0.000 0.000 0.651 WSW 0.000 0.00 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 0.233 0.047 0.000 0.000 0.000 0.279 WNW 0.000 0.000 0.000 0.093 0.186 0.419 0.000 0.000 0.000 0.698 NW 0.000 0.000 0.000 0.000 0.047 0.186 0.000 0.000 0.000 0.233 NNW 0.000 0.000 0.000 0.000 0.186 0.279 0.000 0.000 0.000 0.465 SUBTOTAL 0.000 0.047 0.000 0.279 2.141 2.699 0.000 0.000 0.000 5.165 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS A 111 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 = 7.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-32

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - MAR 31, 201 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 0.047 0.186 0.000 0.140 0.000 0.000 0.000 0.372 NNE 0.000 0.000 0.000 0.047 0.186 0.279 0.000 0.000 0.000 0.512 NE 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.140 ENE 0.000 0.000 0.000 0.000, 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.140 0.047 0.000 0.000 0.000 0.186 SSW 0.000 0.000 0.000 0.140 0.233 0.233 0.000 0.000 0.000 0.605 SW 0.000 0.000 0.000 0.233 0.186 0.093 0.000 0.000 0.000 0.512 WSN 0.000 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.093 W 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.047 0.000 0.140 0.140 0.000 0.000 0.000 0.326 NW 0.000 0.000 0.000 0.000 0.047 0.233 0.000 0.000 0.000 0.279 NNW 0.000 0.000 0.047 0.047 0.047 0.047 0.000 0.000 0.000 0.186 SUBTOTAL 0.000 0.000 0.186 0.791 1.070 1.210 0.047 0.000 0.000 3.304 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS B 71 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 71 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 = 6.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-33

2011 WATTS BAR NUCLEAR PLANT 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 JAN 1, 2011 - MAR 31, 2011 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 2.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.000 0.047 0.186 0.140 0.047 0.000 0.000 0.000 0.419 NNE 0.000 0.000 0.093 0.140 0.140 0.186 0.000 0.000 0.000 0.558 NE 0.00o 0.000 0.047 0.047 0.047 0.093 0.000 0.000 0.000 0.233 FNE 0.o00 0.000 0.047 0.093 0.047 0.000 0.000 0.000 0.000 0.186 F 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.000 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 0.093 0.000 0.000 0.000 0.000 0.000 0.093 5S SSW 0.000 0.000 0.000 0.186 0.186 0.047 0.000 0.000 0.000 0.419 0.000 0.000 0.047 0.326 0.465 0,093 0.093 0.000 0.000 1.024 SW 0.000 0.000 0.000 0.465 0.000 0.047 0.000 0.000 0.000 0.512 WSW NW 0.000 0.000 0.000 0.093 0.047 0.093 0.000 0.000 0.000 0.233 N 0.000 0 .000 0.000 0.000 0.186 0.000 0.000 0.000 0.000 0.186 WNW 0.000 0.000 0.000 0.000 0.047 0.186 0.000 0.000 0.000 0.233 NW 0.000 0.000 0.000 0.000 0.186 0.186 0.000 0.000 0.000 0.372 NNW 0.000 0.000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.140 SUBTOTAL 0.000 0.000 0.279 1.722 1.536 1.024 0.093 .000 0.000 4.653 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS C 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 = 6.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-34

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - MAR 31, 2011 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 1.117 1.489 1.536 1.536 0.000 0.000 0.000 5.677 NNE 0.000 0.000 0.791 2.280 1.210 1.024 0.000 0.000 0.000 5.305 NE 0.000 0.047 0.698 1.070 0.419 0.093 0.000 0.000 0.000 2.327 ENE 0.000 0.047 0.745 0.651 0.326 0.093 0.000 0.000 0.000 1.861 E 0.000 0.000 0.326 0.140 0.000 0.000 0.000 0.000 0.000 0.465 ESE 0.000 0.000 0.326 0.093 0.000 0.000 0.000 0.000 0.000 0.419 SE 0.000 0.047 0.326 0.140 0.000 0.000 0.000 0.000 0.000 0.512 SSE 0.000 0.047 0.558 0.233 0.000 0.000 0.000 0.000 0.000 0.838 S 0.000 0.000 0.791 0.558 0.512 0.186 0.047 0.000 0.000 2.094 SSW 0.000 0.047 1.117 1.536 1.163 1.489 0.000 0.000 0.000 5.351 SW 0.000 0.140 1.117 0.605 0.279 0.186 0.000 0.000 0.000 2.327 WSW 0.000 0.233 0.605 0.326 0.140 0.186 0.000 0.000 0.000 1.489 W 0.000 0.047 0.512 0.512 0.512 0.605 0.000 0.000 0.000 2.187 WNW 0.000 0.047 0.512 0.977 1.163 0.605 0.047 0.000 0.000 3.350 NW 0.000 0.047 0.558 0.512 1.210 1.256 .0.047 0.000 0.000 3.630 NNW 0.000 0.000 0.838 0. 698 1.582 1.443 0.000 0.000 0.000 4.560 SUBTOTAL 0.000 0.745 10.935 11.819 10.051 8.702 0.140 0.000 0.000 42.392 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS D 911 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 911 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 E1-35

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - MAR 31, 2011 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 0.047 1.070 0.419 0.093 0.279 0.000 0.000 0.000 1.908 NNE 0.000 0.047 0.698 0.372 0.279 0.047 0.000 0.000 0.000 1.443 NE 0.000 0.000 0.558 0.465 0.000 0.000 0.000 0.000 0.000 1.024 ENE 0.000 0.093 0.465 0.047 0.047 0.000 0.000 0.000 0.000 0.651 E 0.000 0.093 0.372 0.047 0.047 0.000 0.000 0.000 0.000 0.558 ESE 0.000 0.047 0.186 0.093 0.000 0.000 0.000 0.000 0.000 0.326 SE 0.000 0.047 0.093 0.140 0.047 0.000 0.000 0.000 0.000 0.326

.SSE 0.000 0.093 0.465 0.233 0.140 0.047 0.000 0.000 0.000 0.977 S 0.000 0.186 0.605 0.372 0.279 0.140 0.093 0.000 0.000 1.675 SSW 0.000 0.279 1.024 1.024 0. 698 0.326 0.000 0.000 0.000 3.350 SW 0.000 0.558 1.070 0.372 0.279 0.047 0.000 0.000 0.000 2.327 WSW 0.000 0.233 1.024 0.326 0.047 0.047 0.000 0.000 0.000 1.675 W 0.000 0.233 1.303 0.279 0.140 0.093 0.000 0.000 0.000 .2.047 WNW 0.000 0.233 0.884 0.465 0.093 0.000 0.000 0.000 0.000 1.675 NW 0.000 0.233 0.372 0.233 0.140 0.047 0.047 0.000 0.000 1.070 NNW 0.000 0.000 0.465 0.419 0.233 0.140 0.000 0.000 0.000 1.256 SUBTOTAL 0.000 2.420 10.656 5.305 2.559 1.210 0.140 0.000 0.000 22.289 TOTAl, HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS E 479 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 479 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 = 3.55 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-36

2011 WATTS BAR NUCLEAR PLANT 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 JAN 1, 2011 - MAR 31, 2011 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 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.140 NNE 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.140 NE 0.000 0.047 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.279 ENE 0.000 0.233 0.884 0.000 0.000 0.000 0.000 0.000 0.000 1.117 E 0.000 0.186 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.465 ESE 0.000 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.186 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.233 SSE 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.186 S 0.000 0.093 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.279 SSW 0.000 0.140 1.117 0.465 0.000 0.000 0.000 0.000 0.000 1.722 SW 0.000 0.186 0.651 0.000 0.000 0.000 0.000 0.000 0.000 0.838 WSW 0.000 1.117 0.372 0.000 0.000 0.000 0.000 0.000 0.000 1.489 W 0.000 0.838 0.605 0.000 0.000 0.000 0.000 0.000 0.000 1.443 WNW 0.000 0.838 0.326 0.000 0.000 0.000 0.000 0.000 0.000 1.163 NW 0.000 0.512 0.465 0.000 0.000 0.000 0.000 0.000 0.000 0.977 NNW 0.000 0.419 0.233 0.047 0.000 0.000 0.000 .0.000 0.000 0.698 SUBTOTAL 0.000 5.165 5.584 0.605 0.000 0.000 0.000 0.000 0.000 11.354 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS F 244 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 244 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 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 = 1.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-37

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/1i0 M)

WATTS BAR NUCLEAR PLANT JAN 1, 2011 - MAR 31, 2011 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 0.003 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.189 NNE 0.007 0.233 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.426 NE 0.005 0.140 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.284 ENE 0.011 0.233 0.419 0.000 0.000 0.000 0.000 0.000 0.000 0.663 E 0.007 0.279 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.426 ESE 0. 005 0.233 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.284 SE 0.005 0.233 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.284 SSE 0. 004 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.237 S 0.003 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.189 SSW 0.008 0.279 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.473 SW 0. 023 0.977 0.326 0.000 0.000 0.000 0.000 0.000 0.000 1.326 WSW 0.033 1.163 0.698 0.000 0.000 0.000 0.000 0.000 0.000 1.894 W 0.030 1.117 0. 605 0.000 0.000 0.000 0.000 0.000 0.000 1.752 WNW 0.020 0.838 0.326 0.000 0.000 0.000 0.000 0.000 0.000 1.184 0.017 NW 0.004 0.512 0.465 0.000 0.000 0.000 0.000 0.000 0.000 0.994 NNW 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.237 SUBTOTAL 0.186 7.027 3.630 0.000 0.000 0.000 0.000 0.000 0.000 10.842 TOTAL (OURS OF VALID STABILITY OBSERVATIONS 2149 TOTAL HOURS OF STABILITY CLASS G 233 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 233 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2149 TOTAL HOURS CALM 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 - 1.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-38

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - JUN 30, 2011 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 0.154 0.256 0.000 0.000 0.000 0.000 0.410 NNE 0.000 0.000 0.051 0.102 0.154 0.000 0.000 0.000 0.000 0.307 NE 0.000 0.000 0.051 0.102 0.000 0.000 0.000 0.000 0.000 0.154 ENE 0.000 0.000 0.000 0.000 0.051 0.000 0.000 0.000 0.000 0.051 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 0a 000 0.102 0.154 0. 102 0.359 0.000 0.000 0.A00 0.717 SSW 0.000 0.000 0.000 0.205 0.461 0.615 0.000 0.000 0.000 1.281 SW 0.000 0.000 0.000 0.000 0. 154 0.051 0.000 0.000 0.000 0.205 WSW 0.000 0.000 0.102 0.000 0.000 0.000 0.000 0.000 0.000 0.102 W 0.000 0.000 0.000 0.000 0.051 0.000 0.000 0.000 0.000 0.051 WNW 0.000 0.000 0.000 0.000 0.051 0.256 0.000 0.000 0.000 0.307 NW 0.000 0.000 0.000 0.000 0.051 0.102 0.000 0.000 0.000 0.154 NNW 0.000 0.000 0.000 0.051 0.000 0.359 0.000 0.000 0.000 0.410 SUBTOTAL 0.000 0.000 0.307 0.768 1.332 1.742 0.000 0.000 0.000 4.150 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS A 81 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 81 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1952 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 = 6.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-39

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - JUN 30, 2011 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 0.051 0.051 0.205 0.102 0.000 0.000 0.000 0.410 NNE 0.000 0.000 0.102 0.154 0.102 0.102 0.000 0.000 0.000 0.461 NE 0.000 0.000 0.000 0.051 0.000 0.051 0.000 0.000 0.000 0.102 ENE 0.000 0.000 0.000 0.000 0.205 0.000 0.000 0.000 0.000 0.205 E 0.000 0.000 0.000 0.000 0.102 0.000 0.000 0.000 0.000 0.102 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 0.051 0.000 0.307 0.410 0.000 0.000 0.000 0.768 SSW 0.000 0.000 0.051 0.102 0.461 0.512 0.000 0.000 0.000 1.127 SW 0.000 0.000 0.000 0.102 0.000 0.000 0.000 0.000 0.000 0.102 WSW 0.000 0.000 0.000 0.000 0.102 0.000 0.000 0.000 0.000 0.102 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 0.102 0.205 0.102 0.000 0.000 0.410 NW 0.000 0.000 0.000 0.051 0.102 0.102 0.000 0.000 0.000 0.256 NNW 0.000 0.000 0.000 0.051 0.000 0.000 0.000 0.000 0.000 0.051 SUBTOTAL 0.000 0.000 0.256 .564 1.691 1.486 0.102 0.000 0.000 4.098 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS B 81 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED- STABILITY CLASS B 80 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED- STABILITY OBSERVATIONS 1952 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 - 7.09 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-40

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - JUN 30, 2011 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 0.051 0.051 0.154 0.051 0.000 0.000 0.000 0.307 NNE 0.000 0.000 0.102 0.154 0.000 0.154 0.000 0.000 0.000 0.410 NE 0.000 0.000 0.205 0.102 0.000 0.000 0.000 0.000 0.000 0.307 ENE 0.000 0.000 0.051 0.154 0.051 0.000 0.000 0.000 0.000 0.256 E 0.000 0.000 0.000 0.051 0.000 0.000 0.000 0.000 0.000 0.051 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 0.154 0.102 0.000 0.000 0.000 0.000 0.256 S 0.000 0.000 0.051 0.410 0.410 0.205 0.051 0.000 0.000 1.127 SSW 0.000 0.000 0.102 0.768 0.564 0.154 0.000 0.000 0.000 1.588 SW 0.000 0.000 0.051 0.205 0.051 0.000 0.000 0.000 0.000 0.307 WSW 0.000 0.000 0.102 0.102 0.000 0.000 0.000 0.000 0.000 0.205 W 0.000 0.000 0.051 0.051 0.102 0.000 0.000 0.000 0.000 0.205 WNW 0.000 0.000 0.000 0.000 0.205 0.102 0.000 0.000 0.000 0.307 NW 0.000 0.000 0.051 0.000 0.051 0.256 0.000 0.000 0.000 0.359 NNW 0.000 0.000 0.000 0.000 0.051 0.051 0.000 0.000 0.000 0.102 SUBTOTAL 0.000 0.000 0.820 2.203 1.742 0.973 0.051 .000 0.000 5.789 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS C 114 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 113 TOTAL HOURSOF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1952 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 = 5.70 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-41

2011 WATTS BAR NUCLEAR PLANT 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 APR 1, 2011 - JUN 30, 2011 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 0.205 0.512 0.615 0.410 0.000 0.000 0.000 1.742 NNE 0.000 0.000 0.307 0.461 0.256 0.102 0.000 0.000 0.000 1.127 NE 0.000 0.000 0.359 0.102 0.051 0.051 0.000 0.000 0.000 0.564 ENE 0.000 0.051 0.256 0.154 0.051 0.000 0.000 0.000 0.000 0.512 E 0.000 0.051 0.205 0.154 0.000 0.000 0.000 0.000 0.000 0.410 ESE 0.000 0.102 0.256 0.102 0.000 0.000 0.000 0.000 0.000 0.461 SE 0.000 0.051 0.359 0.102 0.051 0.000 0.000 0.000 0.000 0.564 SSE 0.000 0.102 0.820 0.461 0. 154 0.000 0.000 0.000 0.000 1.537 S 0.000 0.051 1.127 1.947 1.281 1.537 0.102 0.000 0.000 6.045 SSW 0.000 0.000 1.998 2.357 1.639 1.178 0.051 0.000 0.000 7.223 SW 0.000 0.051 0.973 0.922 0.051 0.205 0.000 0.000 0.000 2.203 WSW 0.000 0.205 0.666 0.154 0.154 0.256 0.000 0.000 0.000 1.434 W 0.000 0.102 0.512 0.410 0.307 0.256 0.000 0.000 0.000 1.588 WNW 0.000 0.000 0.256 0.461 0.359 0.307 0.000 0.000 0.000 1.383 NW 0.000 0.051 0.154 0.205 0.461 0.461 0.000 0.000 0.000 1.332 NNW 0.000 0.000 0.256 0.205 0.512 0.205 0.000 0.000 0.000 1.178 SUBTOTAL 0.000 0.820 8.709 8.709 5.943 4.969 0.154 0.000 0.000 29.303 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS D 581 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 572 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1952 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 5.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-42

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - JUN 30, 2011 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 0.205 0.205 0.102 0.000 0.000 0.000 0.000 0.512 NNE 0.000 0.102 0.256 0.102 0.051 0.000 0.000 0.000 0.000 0.512 NE 0.000 0.051 0.307 0.000 0.000 0.000 0.000 0.000 0.000 0.359 ENE 0.000 0.000 0.359 0.051 0.000 0.000 0.000 0.000 0.000 0.410 E 0.000. 0.051 0.102 0.102 0.000 0.000 0.000 0.000 0.000 0.256 ESE 0.000 0.205 0.205 0.000 0.000 0.000 0.000 0.000 0.000 0.410 SE 0.000 0.307 0.307 0.000 0.051 0.000 0.000 0.000 0.000 0.666 SSE 0.000 0.000 0.461 0.256 0.102 0.102 0.000 0.000 0.000 0.922 S 0.000 0.205 1.332 1.230 0.871 0.615 0.000 0.000 0.000 4.252 SSW 0.000 0.307 2.100 2. 613 1.281 0.820 0.000 0.000 0.000 7.121 SW 0.000 0.256 1.588 0.256 0.205 0.051 0.000 0.000 0.000 2.357 WSW 0.000 0.717 1.178 0.205 0.000 0.205, 0.000 0.000 0.000 2.305 W 0.000 0.820 0.973 0.102 0.154 0.051 0.000 0.000 0.000 2.100 WNW 0.000 0.205 0.512 0.307 0.000 0.051 0.000 0.000 0.000 1.076 NW 0.000 0.410 0.564 0.102 0.000 0.154 0.000 O.000 0.000 1.230 NNW 0.000 0.102 0.102 0.307 0.000 0.000 0.000 0.000 0.000 0.512 SUBTOTAL 0.000 3.740 10.553 5.840 2.818 2.049 0.000 0.000 0.000 25.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS L967 TOTAL HOURS OF STABILITY CLASS E 492 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 488 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS L952 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 = 3.64 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-43

2011 WATTS BAR NUCLEAR PLANT 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 APR 1, 2011 - JUN 30, 2011 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 0.102 0.256 0.000 0.000 0.000 0.000 0.000 0.000 0.359 NNE 0.000 0.154 0.051 0.000 0.000 0.000 0.000 0.000 0.000 0.205 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.205 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.205 E 0.000 0.359 0.205 0.000 0.000 0.000 0.000 0.000 0.000 0.564 ESE 0.000 0.000 0.051 0.000 0.000 0.000 0.000 0.000 0.000 0.051 SE 0.000 0.102 0.051 0.000 0.000 0.000 0.000 0.000 0.000 0.154 SSE 0.000 0.051 0.205 0.000 0.000 0.000 0.000 0.000 0.000 0.256 S 0.000 0.512 0.410 0.000 0.000 0.000 0.000 0.000 0.000 0.922 SSW 0.000 0.256 1.742 0.154 0.000 0.000 0.000 0.000 0.000 2.152 SW 0.000 1.332 0.615 0.102 0.051 0.000 0.000 0.000 0.000 2.100 WSW 0.000 1.230 0.512 0.000 0.000 0.000 0.000 0.000 0.000 1.742 W 0.000 1.537 0.615 0.000 0.000 0.000 0.000 0.000 0.000 2.152 WNW 0.000 1.178 0.717 0.000 0.051 0.000 0.000 0.000 0.000 1.947 NW 0.000 1.230 0.512 0.000 0.051 0.000 0.000 0.000 0.000 1.793 NNW 0.000 0.461 0.154 0.000 0.000 0.000 0.000 0.000 0.000 0.615 SUBTOTAL 0.000 8.709 6.096 0.256 0.154 0.000 0.000 0.000 0.000 15.215 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS F 297 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 297 TOTAL SOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1952 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 = 1.55 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-44

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - JUN 30, 2011 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 0.004 0.154 0.102 0.000 0.000 0.000 0.000 0.000 0.000 0.260 NNE 0.003 0.102 0.102 0.000 0.000 0.000 0.000 0.000 0.000 0.208 NE 0.002 0.102 0.051 0.000 0.000 0.000 0.000 0.000 0.000 0.156 ENE 0.003 0.154 0.051 0.000 0.000 0.000 0.000 0.000 0.000 0.208 E 0.004 0.256 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.260 ESE 0.002 0.102 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.104 SE 0.004 0.256 0,000 0.000 0.000 0.000 0.000 0.000 0.000 0.260 SSE 0.006 0.359 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.364 S 0.007 0.461 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.468 SSW 0.021 1.076 0.256 0.000 0.000 0.000 0.000 0.000 0.000 1.353 SW 0.024 1.230 0.256 0.000 0.000 0.000 0.000 0.000 .0.000 1.509 WSW 0.045 2.254 0.615 0.000 0.000 0.000 0.000 0.000 0.000 2.914 W 0.049 2.715 0.359 0.000 0.000 0.000 0.000 0.000 0.000 3.122 WNW 0.036 1.895 0.359 0.000 0.000 0.000 0.000 0.000 0.000 2.290 NW 0.036 1.486 0.768 0.000 0.000 0.000 0.000 0.000 0.000 2.290 NNW 0.011 0.512 0,154 0.000 0.000 0.000 0.000 0.000 0.000 0.677 SUBTOTAL 0.256 13.115 3,074 0.000 0.000 0.000 0.000 0.000 0.000 16.445 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 1967 TOTAL HOURS OF STABILITY CLASS G 321 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 321 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 1952 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 = 1.17 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-45

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR SIABILITY CLASS A (DELTA T<=-I.9 C/1O0 M)

WATTS BAR NUCLEAR PLANT JUL 1, 2011 - SEP 30, 2011 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 0.499 0.408 0.408 0.000 0.000 0.000 1.316 NNE 0.000 0.000 0.091 0.590 0.227 0.817 0.000 0.000 0.000 1.724 NE 0.000 0.000 0.091 0.590 0.091 0.181 0.000 0.000 0.000 0.953 ENE 0.000 0.000 0.000 0.454 0.045 0.045 0.000 0.000 0.000 0.544 E 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.136 ESE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 SE 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.227 0.045 0.000 0.000 0.000 0.000 0.272 SSW 0.000 0.000 0.181 0.499 0.272 0.000 0.000 0.000 0.000 0.953 SW 0.000 0.000 0.136 0.499 0.045 0.000 0.000 0.000 0.000 0.681 WSW 0. 000 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.136 W 0.000 0.000 0.045 0.000 0.045 0.000 0.000 0.000 0.000 0.091 WNW 0.00G 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0. 000 0.000 0.000 0.136 0.000 0.091 0.000 0.000 0.000 0.227 NNW 0.000 0.000 0.091 0.318 0.363 0.045 0.000 0.000 0.000 0.817 SUBTOTAL 0.000 0.000 0.771 4.083 1.588 1.588 0.000 0.000 0.000 8.031 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS A 177 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 177 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 TOTAL HOURS CALM 0 METEOROI,OGICAL 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 = 5.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-46

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 2011 WIND WIND SPEED(MPB)

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 0.045 0.181 0.318 0.045 0.000 0.000 0.000 0.590 NNE 0.000 0.000 0.227 0.272 0.136 0.181 0.000 0.000 0.000 0.817 NE 0.000 0.000 0.045 0.363 0.000 0.045 0.000 0.000 0.000 0.454 ENE 0.000 0.000 0.181 0.272 0.045 0.000 0.000 0.000 0.000 0.499 E 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0. 00 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 SE 0.000 0.000 0.000 0.045 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 0.045 0.136 0.091 0.000 0.000 0.000 0.000 0.272 SSW 0.000 0.000 0.272 0.499 0.045 0.000 0.000 0.000 0.000 0.817 SW 0.000 0.000 0.181 0.227 0.000 0.000 0.000 0.000 0.000 0.408 WSW 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 W 0.000 0.000 0.000 0.181 0.000 0.000 0.000 0.000 0.000 0.181 WNW 0.000 0.000 0.091 0.136 0.091 0.000 0.000 0.000 0.000 0.318 NW 0.000 0.000 0.045 0.136 0.091 0.272 0.000 0.000 0.000 0.544 NNW 0.000 0.000 0.181 0.181 0.091 0.227 0.000 0.000 0.000 0.681 SUBTOTAL 0.000 0.000 1.407 2.858 0.907 0.771 0.000 0.000 0.000 5.944 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS B 131 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 131 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 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 = 4.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-47

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 2011 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 0.227 0.181 0.045 0.000 0.000 0.000 0.590 NNE 0. 000 0.000 0.227 0.272 0.272 0.091 0.000 0.000 0.000 0.862 NE 0.1000 0.000 0.318 0.318 0.091 0.000 0.000 0.000 0.000 0.726 ENE 0.000 0.000 0.045 0.136 0.045 0.000 0.000 0.000 0.000 0.227 E 0.000 0.000 0.091 0.136 0.000 0.000 0.000 0.000 0.000 0.227 ESE 0.000 0.1co0 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 SE 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 SSE 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 S 0.000 0.000 0.045. 0.136 0.045 0.000 0.000 0.000 0.000 0.227 SSW 0.000 0.000 0.272 0.771 0.181 0.000 0.000 0.000 0.000 1.225 SW 0.000 0.000 0.318 0.544 0.000 0.000 0.000 0.000 0.000 0.862 WSW 0.000 0.000 0.181 0.136 0.000 0.000 0.000 0.000 0.000 0.318 W 0.000 0 .000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.136 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.136 0.091 0.136 0.000 0.000 0.000 0.363 NNW 0.000 0.000 0.091 0.136 0.091 0.045 0.000 0.000 0.000 0.363 SUBTOTAL 0.000 0.000 2.042 3.176 0.998 0.318 0.000 0.000 0.000 6.534 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 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 - 4,35 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-48

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 2011 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 -2.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.091 0.635 0.363 0.681 0.408 0.000 0.000 0.000 2.178 NNE 0.000 0.000 0.272 0.635 0.408 0.953 0.000 0.000 0.000 2.269 NE 0.000 0.045 0.363 0.363 0.091 0.000 0.000 0.000 0.000 0.862 ENE 0.000 0.000 0.953 0.363 0.045 0.045 0.000 0.000 0.000 1.407 E 0.000 0.000 0.454 0.227 0.000 0.091 0.000 0.000 0.000 0.771 ESE 0.000 0.045 0.454 0.045 0.000 0.000 0.000 0.000 0.000 0.544 SE 0.000 0.181 0.318 0.272 0.091 0.000 0.000 0.000 0.000 0.862 SSE 0.000 0.136 0.726 0.091 0.000 0.000 0.000 0.000 0.000 0.953 S 0.000 0.136 1.815 0.318 0.000 0.091 0.000 0.000 0.000 2.359 SSW 0.000 0.045 1.543 1.044 0.136 0.045 0.000 0.000 0.000 2.813 SW 0.000 0.136 1.270 0.499 0.000 0.000 0.000 0.000 0.000 1.906 WSW 0.000 0.136 1.089 0.227 0.000 0.000 0.000 0.000 0.000 1.452 W 0.000 0.227 0.408 0.363 0.091 0.000 0.000 0.000 0.000 1.089 WNW 0.000 0.136 0.408 0.499 0.227 0.000 0.000 0.000 0.000 1.270 NW 0.000 0.000 0.408 0.363 0.363 0.227 0.000 0.000 0.000 1.361 NNW 0.000 0.000 0.227 0.227 0.363 0.091 0.000 0.000 0.000 0.907 SUBTOTAL 0.000 .316 11.343 5.898 .495 1.951 0.000 0.000 0.000 23.004 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS D 507 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 507 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY 0 BSERVATIONS 2204 TOTAL HOURS CALM 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 = 3.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-49

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 2011 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 0.181 0.681 1.134 0.045 0.590 0.000 0.000 0.000 2.634 NNE 0.001 0.000 0.318 0.227 0.227 0.363 0.045 0.000 0.000 1.180 NE 0.002 0.045 0.771 0.363 0.000 0.000 0.000 0.000 0.000 1.182 ENE 0.002 0.091 0.953 0.181 0.000 0.045 0.000 0.000 0.000 1.273 E 0.002 0.227 0.635 0.045 0.000 0.000 0.000 0.000 0.000 0.909 ESE 0.001 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.273 SE 0.001 0.091 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.364 SSE 0.001 0.181 0.318 0.045 0.000 0.000 0.000 0.000 0.000 0.546 S 0.004 0.454 1.134 0.227 0.045 0.045 0.000 0.000 0.000 1. 909 SSW 0.005 0.408 1.906 0.363 0.181 0.000 0.000 0.000 0.000 2.864 SW 0.005 0.817 1.361 0.181 0.000 0.000 0.000 0.000 0.000 2.364 WSW 0.004 0.817 0.862 0.000 0.000 0.000 0.000 0.000 0.000 1.683 W 0.004 0 .907 0.817 0.136 0.000 0.000 0.000 0.000 0.000 1.864 WNW 0.004 0.998 0.862 0.544 0.000 0.000 0.000 0.000 0.000 2.409 NW 0.005 0.635 1.316 0.272 0.091 0.045 0.000 0.000 0.000 2.364 NNW 0.002 0.227 0.817 0.635 0.227 0.045 0.000 0.000 0.000 1.953 SUBTOTAL 0.045 6.307 13.022 4.401 0.817 1.134 0.045 0.000 0.000 25.771 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS E 588 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 568 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 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 MEAN WIND SPEED = 2.74 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-50

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 201 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 0.408 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.544 NNE 0.000 0.136 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.272 NE 0.000 0.272 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.363 ENE 0.000 0.227 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.454 E 0.000 0.136 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.272 ESE 0.000 0.181 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.227 SE 0.000 0.181 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.272 SSE 0.000 0.136 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.272 S 0.000 0.408 0.227 0.045 0.000 0.000 0.000 0.000 0.000 0.681 SSW 0.000 0.363 0.681 0.000 0.000 0.000 0.000 0.000 0.000 1.044 SW 0.000 0.953 0.499 0.045 0.000 0.000 0.000 0.000 0.000 1.497 WSW 0.000 1.543 0.907 0.045 0.000 0.000 0.000 0.000 0.000 2.495 W 0.000 2.904 0.862 0.000 0.000 0.000 0.000 0.000 0.000 3.766 WNW 0.000 2.359 1.134 0.000 0.045 0.000 0.000 0.000 0.000 3.539 NW 0.000 1.996 1.134 0.000 0.000 0.000 0.000 0.000 0.000 3.131 NNW 0.000 0.590 0.363 0.045 0.000 0.000 0.000 0.000 0.000 0.998 SUBTOTAL 0.000 12.795 6.715 0.272 0.045 0.000 0.000 0.000 0.000 19.828 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS F 437 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 437 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 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 .45 NOTE: TOTALS PEND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-51

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - SEP 30, 2011 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 0.181 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.319 NNE 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 NE 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ENE 0.001 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.182 E 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.001 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.001 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SSE 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 S 0.001 0.181 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.228 SSW 0.002 0.272 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.365 SW 0.004 0.363 0.499 0.000 0.000 0.000 0.000 0.000 0.000 0.866 WSW 0.005 0.862 0.408 0.000 0.000 0.000 0.000 0.000 0.000 1.276 W 0.009 1.543 0.590 0.000 0.000 0.000 0.000 0.000 0.000 2.141 WNW 0.008 1.497 0.363 0.045 0.000 0.000 0.000 0.000 0.000 1.913 NW 0.008 1.089 0.771 0.000 0.000 0.000 0.000 0.000 0.000 1.868 NNW 0.004 0.590 0.408 0.000 0.000 0.000 0.000 0.000 0.000 1.002 SUBTOTAL 0.045 7.214 3.584 0.045 0.000 0.000 0.000 0.000 0.000 10.889 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2204 TOTAL HOURS OF STABILITY CLASS G 240 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 240 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2204 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 MEAN WIND SPEED = 1.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-52

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/I10 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2011 - DEC 31, 2011 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 0.045 0.136 0.181 0.181 0.000 0.000 0.000 0.544 NNE 0.000 0.000 0.045 0.136 0.181 0.181 0.000 0.000 0.000 0.544 NE 0.000 0.000 0.136 0. 000 0.136 0.000 0.000 0.000 0.000 0.272 ENE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 E 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 ESE 0.000 0.000 0.045 0.000 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 0.000 0.091 0.000 0.000 0.000 0.000 0.091 SSW 0.000 0.000 0.000 0.000 0.181 0.045 0.000 0.000 0.000 0.227 SW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.136 NNW 0.000 0.000 0.000 0.091 0.091 0.136 0.000 0.000 0.000 0.317 SUBTOTAL 0.000 0.000 0.363 0.454 1.043 0.544 0.000 0.000 0.000 2.404 TOTAL SOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL SOURS OF STABILITY CLASS A 53 TOTAL SOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 53 TOTAL SOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2205 TOTAL SOURS 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 - 5.92 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-53

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-I.7 C/100 M)

WATTS BAR NUCLEAR PLANT OCT 1, 2011 - DEC 31, 2011 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 0.181 0.136 0.091 0.000 0.000 0.000 0.544 NNE 0.000 0.000 0.000 0.272 0.091 0.000 0.000 0.000 0.000 0.363 NE 0.000 0.000 0.045 0.045 0.045 0.045 0.000 0.000 0.000 0.181 ENE 0.000 0.000 0.045 0.136 0.045 0.000 0.000 0.000 0.000 0.227 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 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.136 SSW 0.000 0.000 0.000 0.181 0.454 0.000 0.000 0.000 0.000 0. 635 SW 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.091 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 0.045 0.045 0.000 0.000 0.000 0.091 WNW 0.000 0.000 0.000 0.045 0.000 0.045 0.000 0.000 0.000 0.091 NW 0.000 0.000 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.136 NNW 0.000 0.000 0.045 0.181 0.045 0.091 0.000 0.000 0.000 0.363 SUBTOTAL 0.000 0.000 0.272 1.088 .134 0.363 0.000 0.000 0.000 2.857 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS B 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY C BSERVATIONS 2205 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 = 5.58 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-54

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - DEC 31, 2011 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 0.091 0.091 0.181 0.000 0.000 0.000 0.499 NNE 0.000 0.000 0.227 0.091 0.136 0.045 0.000 0.000 0.000 0.499 NE 0.000 0.000 0.181 0.363 0.000 0.000 0.000 0.000 0.000 0.544 ENE 0.000 0.045 0.045 0.136 0.000 0.000 0.000 0.000 0.000 0.227 E 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 S 0.000 0.000 0.000 0.136 0.045 0.136 0.000 0.000 0.000 0.317 SSW 0.000 0.000 0.091 0.091 0.091 0.091 0.000 0.000 0.000 0.363 SW 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 WSW 0.000 0.000 0.000 0.136 0.045 0.000 0.000 0.000 0.000 0.181 W 0.000 0.000 0.000 0.091 0.000 0.045 0.000 0.000 0.000 0.136 WNW 0.000 0.000 0.000 0.045 0.045 0.091 0.000 0.000 0.000 0.181 NW 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 NNW 0.000 0.000 0.091 0.091 0.000 0.227 0.000 0.000 0.000 0.408 SUBTOTAL 0.000 0.045 0.952 1.542 0.499 0.816 0.000 0.000 0.000 3.855 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2205 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 = 5.14 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-55

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - DEC 31, 2011 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 0.045 0.408 0.726 1.270 0.816 0.000 0.000 0.000 3.265 NNE 0.000 0.091 0,680 0.998 0.862 0.272 0.000 0.000 0.000 2.902 NE 0.000 0.136 0,499 0.771 0.181 0.000 0.000 0.000 0.000 1.587 ENE 0.000 0.045 0,680 0.181 0.000 0.000 0.000 0.000 0.000 0.907 E 0.000 0.045 0,680 0.317 0.000 0.000 0.000 0.000 0.000 1.043 ESE 0.000 0.045 0 .181 0.045 0.000 0.000 0.000 0.000 0.000 0.272 SE 0.000 0.000 0.454 0.181 0.000 0.000 0.000 0.000 0.000 0.635 SSE 0.000 0.091 0.726 0.454 0.000 0.000 0.000 0.000 0.000 1.270 S 0.000 0.000 0.998 1.134 0.952 0.635 0.000 0.000 0.000 3.719 SSW 0.000 0.091 1.134 1.950 1.043 0.590 0.000 0.000 0.000 4.807 SW 0.1000 0.091 0. 862 1.179 0.499 0.136 0.000 0.000 0.000 2.766 WSW 0.000 0.045 0.635 0. 635 0.544 0.091 0.000 0.000 0.000 1.950 W 0.000 0.045 0.590 0.454 0.408 0.136 0.000 0.000 0.000 1.633 WNW 0.000 0.000 0.408 0.499 0.181 0.091 0.000 0.000 0.000 1.179 NW 0.000 0.045 0.408 0.272 0.363 0.317 0.000 0.000 0.000 1.406 NNW 0.000 0.000 0.363 1.043 1.587 0.635 0.000 0.000 0.000 3. 628 SUBTOTAL 0.000 0.816 9.705 10.839 7.891 3.719. 0.000 0.000 0.000 32.971 TOTAL HOURS OF VAL] STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS D 727 TOTAL HOUNS OF VALID WIND DIRECTION-WIND SPEED-STABILI TY CLASS D 727 TOTAL HOUDS OF VALID WIND DIRECTION-WIND SPEED-STABILI TY OBSERVATIONS 2205 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 = 4.70 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-56

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - DEC 31, 2011 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.c0o 0.045 0.272 0.272 0.272 0.091 0.000 0.000 0.000 0.952 NNE 0.000 0.136 0.499 0.272 0.045 0.045 0.000 0.000 0.000 0.998 NE 0.000 0.000 0.454 0.091 0.000 0.000 0.000 0.000 0.000 0.544 ENE 0.000 0.227 0.499 0.091 0.000 0.000 0.000 0.000 0.000 0.816 E 0.000 0.317 .0.544 0.000 0.000 0.000 0.000 0.000 0.000 0.862 ESE 0.000 0.272 0.272 0.136 0.00M 0.000 0.000 0.000 0.000 0.680 SE 0.000 0.045 0.272 0.000 0.000 0.000 0.000 0.000 0.000 0.317 SSE 0.000 0.181 0.454 0.000 0.000 0.000 0.000 0.000 0.000 0.635 S 0.000 0.363 0.862 0.544 0.272 0.317 0.000 0.000 0.000 2.358 SSW 0.000 0.363 1.451 1.950 0.680 0.136 0.000 0.000 0.000 4.580 SW 0.000 0.544 0.952 0.499 0.091 0.000 0.000 0.000 0.000 2.086 WSW 0.000 0.680 0.998 0.227 0.091 0.000 0.000 0.000 0.000 1.995 W 0.000 0.590 0.998 0.408 0.091 0.000 0.000 0.000 0.000 2.086 WNW 0.000 0.363 0.862 0.363 0.136 0.000 0.000 0.000 0.000 1.723 NW 0.000 0.227 0.680 0.317 0.317 0.045 0.000 0.000 0.000 1.587 NNW 0.000 0.227 0.363 1.043 0.454 0.136 0.000 0.000 0.000 2.222 SUBTOTAL 0.000 4.580 10.431 6.213 2.449 0.771 0.000 0.000 0.000 24.444 TOTAL HOURS OF VALTD STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS E 539 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STAB] LITY CLASS E 539 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STAB] LITY OBSERVATIONS 2205 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 = 3.19 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-57

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - DEC 31, 2011 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 0.181 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.273 NNE 0.001 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.182 NE 0.000 0.045 0.045 . 0.000 0.045 0.000 0.000 0.000 0.000 0.136 ENE 0.002 0.272 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.501 E 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.137 ESE 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.091 S 0.001 0.136 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.318 SSW 0.003 0.181 0.590 0.091 0.000 0.000 0.000 0.000 0.000 0.864 SW 0.004 0.363 0.771 0.045 0.000 0.000 0.000 0.000 0.000 1.183 WSW 0.004 0.590 0.544 0.000 0.000 0.000 0.000 0.000 0.000 1.138 W 0.008 1.179 1.134 0.045 0.000 0.000 0.000 0.000 0.000 2.366 WNW 0.013 2.222 1.497 0.227 0.000 0.000 0.000 0.000 0.000 3.958 NW 0.007 1.043 0.907 0.091 0.045 0.000 0.000 0.000 0.000 2.093 NNW 0.002 0.317 0.317 0.045 0.000 0.000 0.000 0.000 0.000 0.682 SUBTOTAL 0.045 6.893 6.440 0.590 0.091 0.000 0.000 0.000 0.000 14.059 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS F 310 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 310 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2205 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 MEAN WIND SPEED = 1.73 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-58

2011 WATTS BAR NUCLEAR PLANT 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, 2011 - DEC 31, 2011 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 0.003 0.227 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.366 NNE 0.001 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.137 Nr 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.001 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.137 E 0.002 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.183 ESE 0.001 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SF 0.001 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SSE 0.002 0.091 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.229 S 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSW 0.004 0.272 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.458 SW 0.012 0.998 0.317 0.000 0.000 0.000 0.000 0.000 0.000 1.328 WIW 0.022 1.633 0. 680 0.000 0.000 0.000 0.000 0.000 0.000 2.335 W 0.043 2.993 1.587 0.045 0.000 0.000 0.000 0.000 0.000 4.669 WNW 0.047 2.902 2.086 0.000 0.000 0.000 0.000 0.000 0.000 5.036 NW 0.030 2.313 0.816 0.000 0.000 0.000 0.000 0.000 0.000 3.159 NNW 0.010 0.862 0.227 0.000 0.000 0.000 0.000 0.000 0.000 1.099 SUBTOTAL 0.181 12.789 6.395 0.045 0.000 0.000 0.000 0.000 0.000 19.410 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS G 428 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILI TY CLASS G 428 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILI TY OBSERVATIONS 2205 TOTAL HOURS CALM 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 MNAN WIND SPEED = 1.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-59

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 1 Deviations from ODCM Controls/Surveillance Requirements None E1-60

2011 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 2 Radioactive Effluent Monitoring Instrumentation Inoperable for Greater than 30 days 1/2.1.2 Auxiliary Building Flowrate Measuring Device 0-LPF-90-300 was inoperable 01/31/2011 Control 1.1.2 for more than 30 days. Flowrate device 0-LPF-90-300 became inoperable on Action B 11/11/2010 at 0610 and returned to operable status on 02/15/2011 at 0917.

Table 1.1-2 The Auxiliary Building ventilation was shutdown to support testing of the Item 4. c Unit 2 blast doors. During this time, the stack flow indication erroneously remained above 100,000 scfm even though auxiliary building ventilation was shutdown (PER 282385 and WO 111637182). During the inoperable period, compensatory requirements specified in the ODCM were met for the inoperable flowrate device.

El-61

ML12124A216

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