Text

Enclosure 1, Watts Bar Nuclear Plant - 2005 Annual Radioactive Effluent Release Report
	ML061220258
Person / Time
Site:	Watts Bar
Issue date:	04/27/2006
From:	; Tennessee Valley Authority
To:	; Office of Nuclear Reactor Regulation
References
	Download: ML061220258 (57)
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Enclosure 1 Watts Bar Nuclear Plant 2005 Annual Radioactive Effluent Release Report El-1

2005 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. lodine-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-131, 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 pCi/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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2005 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 2.0E-04 Ci/ml 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's 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 Offsite Dose Calculation Manual (ODCOM) 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 activity concentrations are determined on each Radwaste and Condensate Demineralizer 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 concentration for each nuclide. The curies of each nuclide are then summed.

Composite samples are maintained and analyzed monthly for tritium and 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 Condensate Demineralizer Tank releases and the feedwater tritium concentration is used to determine the curies of tritium released from Condensate Demineralizer Tank.

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION continuous Releases (Turbine Building Sump, Steam Generator Blowdown, and Groundwater Sump)

During periods of no significant identified primary to secondary leakage, the volume released from the TBS and SGB is obtained. The TBS tritium concentration is determined via weekly grab samples. The feedwater tritium concentration is used to determine the curies of tritium released from SGB. During periods when a signigicant primary to secondary leak is detected, composite samples are maintained on the TBS and SGB and analyzed monthly for tritium and gross alpha, and quarterly for Iron-55, Strontium-89, and Strontium-90. The Groundwater Sump is sampled weekly and analyzed for gross gamma and tritium. 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 concentration for each nuclide.

B. Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded. Weekly grab samples trom 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 only required if dose equivalent 1-131 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of 3).

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 determined 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 only required 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 3).

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.

C. lodines and Particulates in Gaseous Releases Iodine and particulate activity is continuously sampled. Weekly charcoal and particulate samples are taken from the shield building exhaust and auxiliary building exhausts and from condenser vacuum exhaust during periods of primary to secondary leak. 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, particulate and charcoal samples are taken from the shield building exhausts, auxiliary building exhaust, and condenser vacuum exhaust when a primary to secondary leak exist 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 dose equivalent 1-1:31 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of 3).

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2005 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 70 44 Each

2. Total time period of releases 15697 6348 Minutes

3. Maximum time period of release 1083 300 Minutes

4. Average time period of releases 224 144 Minutes

5. Minimum time period for release 1 54 Minutes

6. Average dilution stream flow during 26,013 22,987 CFS release periods B. Gaseous (Batches only - containment purges, and waste gas decay tanks)

1. Number of releases 46 41 Each

2. Total time period of releases 124846 66346 Minutes

3. Maximum time period for release 16534 8341 Minutes

4. Average time period for releases 2714 1618 Minutes

5. Minimum time period for release 13 4 Minutes

6. Abnormal Releases Value Units 1st Half 2nd Half A. Liquid Number of Releases *

Total Activity Released 1.02 0.572 Ci

Releases from the Groundwater Sump only contain tritium and are quantified on a weekly basis.

B. Gaseous Number of Releases 2** 0 Total Activity Released 5.35E-02 N/A Ci

- There was an unplanned release from Steam Generator PORV's on 2/22/2005 when the PORV's intermittently opened from 00:42 until 01:27 during shutdown for U1C6 outage.

- There was an unplanned release of 10 psig over a one hour period from Waste Gas Decay Tank C via the Un t I Sheild Building Exhaust on 3/24/2005 at 02:30.

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-A Liquid Effluents - Summation of All Releases Unit: 1 Starting: 1-Jan-2005 Ending: 30-Jun-2005 Est.

Tot Type Of Eiffluent Units Quarter I Quarter 2 Error %

A. Fission &Activation Products

1. Total Release (Not Including Tritium, Ci 5.48E-02 4.75E-02 25%

Gases, Alpha)

2. Average Diluted Concentration During Ci/ml 4.14E-09 4.87E-09 Period

3. Percent Of Applicable Limit % *

B. Tritium

1. Total Release Ci 1.05E+03 1.13E+02 18%

2. Average Diluted Concentration During Ci/ml 7.93E-05 1.16E-05 Period

3. Percent Of Applicable Limit % *

C. Dissolved And Entrained Gases 1.Total Release Ci 1.56E+00 3.07E-02 39%

2. Average Diluted Concentration During Ci/ml 1.1 8E-07 3.14E-09 Period

3. Percent Of Applicable Limit % 5.89E-02 1.57E-03 D. Gross Alpha Radioactivity

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

E. Waste Volume Released Liters 3.37E+08 4.34E+08 2%

(Pre-Dilution)

F.Volume Of Dilution Water Used Liters 1.29E+10 9.33E+09 12%

Applicable limits are expressed in terms of dose. See Table 7A of this report.

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

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-B Liquid Effluents - Summation of All Releases Unit: I Starting: 1-Jul-2005 Ending: 31-Dec-2005 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission &Activation Products

1. Total Release (Not Including Ci 4.07E-03 6.63E-03 25%

Tritium, Gases, Alpha)

2. Average Diluted Concentration Cl/ml 2.60E-10 7.40E-10 During Period

3. Percent Of Applicable Limit % *

B. Tritium 1.Total Release Ci 3.56E+01 1.37E+02 18%

2. Average Diluted Concentration Cilml 2.28E-06 1.53E-05 During Period

3. Percent Of Applicable Limit % *

C. Dissolved And Entrained Gases 1.Total Release Ci 8.61 E-03 4.84E-03 39%

2. Average Diluted Concentration Ci/ml 5.51E10 5.40E-10 During Period

3. Percent Of Applicable Limit % 2.75E-04 2.70E-04 D. Gross Alpha Radioactivity 1.Total Release Ci O.OOE+00** O.OQE+00 NIA***

E. Waste Volume Released Liters 5.38E+08 4.72E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 1.51 E+10 8.49E+09 12%

Applicable limits are expressed in terms of dose. See Table 7B of this report.

- Zeroe; in this table indicate that no radioactivity was present at detectable levels.

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A Liquid Effluents Unit: 1 Starting: 1-Jan-2005 Ending: 30-Jun-2005 Continuous Mode Batch Mode Nuclide Unit Quarter 1 Quarter 2 Quarter 1 Quarter 2 H-3 Ci 1.41EE+00 6.56E-01 1.05E+03 1.12E+02 Fission & Activation Products Ag-1I0m Ci O.OOE+OO O.OOE+00 3.21E-05 O.OOE+OO Co-57 Ci O.OOE+00 O.OOE+00 3.38E-05 1.12E-04 Co-58 Ci O.OOE+OO O.OOE+0O 6.28E-03 3.33E-02 Co-60 Ci O.OOE+00 O.OOE+00 2.23E-03 1.81 E-03 Cr-51 Ci 5.22E-04 O.OOE+00 1.41 E-04 1.22E-03 Cs-134 Ci 1.64E-04 O.OOE+00 5.87E-04 1.13E-03 Cs-137 Ci 1.23E-04 O.OOE+0O 5.81 E-04 9.49E-04 Cs-1 38 Ci 4.53E-03 O.OOE+00 O.OOE+00 2.33E-05 Fe-55 Ci 3.28E-09 ;O.OOE+00 2.24E-07 1.56E-07 Fe-59 Ci O.OOE+OO 0.OOE+OO O.OOE+00 6.52E-05 1-131 Ci 1.46E-03 O.OOE+OO 2.04E-03 1.20E-04 1-132 Ci 2.42E-03 O.OOE+OO 1.08E-03 O.OOE+OO 1-133 Ci 4.52E-03 O.OOE+OO 5.77E-05 O.OOE+OO 1-134 Ci 9.98E-04 O.OOE+OO O.OOE+00 O.OOE+OO 1-135 Ci 3.07E-03 O.OOE+OO O.OOE+00 O.OOE+OO La-140 Ci O.OOE+00 O.OOE+00 4.47E-06 O.00E+OO Mn-54 Ci O.OOE+00 O.OOE+00 1.59E-04 3.18E-04 Nb-95 Ci O.OOE+00 O.OOE+00 2.52E-05 3.32E-04 Rb-88 Ci 1.01 E-02 O.OOE+00 O.OOE+00 5.40E-05 Rh-106 Ci O.ooE+Oo O.OOE+OO 1.78E-05 O.OOE+OO Ru-1 03 Ci O.OOE+OO O.OOE+OO 3.86E-06 O.OOE+OO Ru-106 Ci O.OOE+OO O.OOE+00 1.78E-05 O.OOE+OO Sb-122 Ci O.OOE+00 O.OOE+OO 1.72E-05 O.OOE+0O Sb-124 Ci O.OOE+00 O.OOE+OO 3.02E-04 6.46E-04 Sb-1 25 Ci O.OOE+OO O.OOE+OO 6.97E-03 4.66E-03 Sb-1 26 Ci O.OOE+0O O.OOE+OO 3.19E-03 8.50E-04 Sn-117m Ci O.OOE+OO O.OOE+OO 6.50E-05 1.25E-04 Sr-89 Ci O.OOE+0O O.OOE+OO 2.21E-03 O.OOE+OO Sr-90 Ci O.OOE+00 O.OOE+0O 7.75E-05 O.OOE+00 Te-129 Ci O.OOE+0O O.OOE+OO O.OOE+OO 6.73E-04 Te-129m Ci O.OOE+0O O.OOE+OO O.OOE+OO 9.56E-04 Te-132 Ci O.OOE+OO O.OOE+OO 7.65E-04 O.OOE+00 Zr-95 Ci O.OOE+0O O.OOE+OO 9.37E-06 1.68E-04 Totals Ci 2.79E-02 O.OOE+OO 2.69E-02 4.75E-02

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A (Continued)

Liquid Effluents Unit: 1 Starting: 1-Jan-2005 Ending: 30-Jun-2005 Continuous Mode Batch Mode Nuclide Unit Quarter I Quarter 2 Quarter 1 Quarter 2 Dissolved And Entrained Gases Ar-41 Ci 0.OOE+00 0.00E+00 0.OOE+00 1.62E-05 Kr-85 Ci 0.OOE+00 0.OOE+00 7.54E-02 1.84E-02 Kr-85M Ci 5.12E-05 0.OOE+00 1.08E-04 O.OOE+00 Xe-1 31M Ci 0.OOE+00 0.00E+00 4.65E-02 2.73E-03 Xe-133 Ci 0.OOE+00 0.OOE+00 1.42E+00 9.61 E-03 Xe-133M Ci 0.OOE+00 0.OOE+00 1.04E-02 0.00E+00 Xe-135 Ci 1.65E-04 0.00E+00 3.72E-03 6.25E-06 Xe-1 35M Ci 2.08E-04 0.OOE+00 0.OOE+00 0.00E+00 Totals Ci 4.24E-04 0.00E+00 1.56E+00 3.08E-02

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B Liquid Effluents Unit: I Starting: 1-Ju1-2005 Ending: 31-Dec-2005 Continuous Mode Batch Mode Nuclide Unit Quarter 3 Quarter 4 Quarter 3 Quarter 4 H-3 Ci 7.02E-01 6.77E-01 3.49E+01 1.36E+02 Fission & Activation Products Ag-110m Ci O.OOE+00 O.OE+00 O.OE+00 2.87E-05 Co-57 Ci O.OOE+00 O.OOE+00 8.05E-06 2.55E-05 Co-58 Ci O.OOE+00 O.OOE+00 3.08E-03 2.42E-03 Co-60 Ci O.OOE+00 O.OOE+00 1.81E-04 1.21E-03 Cs-1 34 Ci O.OOE+00 O.OOE+00 1.02E-04 7.68E-05 Cs-137 Ci O.OOE+00 O.OOE+00 1.16E-04 8.71 E-05 Fe-55 Ci O.OE+00 O.OOE+00 2.98E-07 6.32E-07 1-131 Ci O.OE+00 O.OOE+00 9.76E-06 O.OOE+00 Mn-54 Ci O.0OE+00 O.OE+00 6.81 E-06 1.54E-04 Nb-95 Ci O.OE+00 O.OOE+00 O.OOE+00 4.21 E-05 Sb-124 Ci O.00E+00 O.OOE+00 4.47E-06 O.OOE+00 Sb-125 Ci O.OOE+00 O.OOE+00 5.62E-04 2.29E-03 Sn-117m Ci O.OOE+00 O.OOE+00 1.72E-06 O.OOE+00 Sr-89 Ci O.OOE+00 O.OOE+00 O.OOE+00 2.88E-04 Sr-90 Ci O.OOE+00 O.OOE+00 O.OOE+00 9.95E-06 Totals Ci O.OOE+00 O.OOE+00 1.64E-02 6.63E-03 Dissolved And Entrained Gases Kr-85 Ci O.OE+00 O.OOE+00 3.40E-03 3.93E-03 Xe-131m Ci O.OOE+00 O.OOE+00 8.42E-05 O.OE+00 Xe-1 33 Ci O.OOE+00 O.OOE+00 5.12E-03 9.05E-04 Xe-135 Ci O.OOE+00 O.OOE+00 4.19E-06 3.62E-06 Totals Ci O.OOE+00 O.OOE+00 8.61 E-03 4.84E-03

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-A Gaseous Effluents - Summation of All Releases Unit: 1 Starting: I-Jan-2005 Ending: 30-Jun-2005 Est. Tot Type Of Effluent Units Quarter 1 Quarter 2 Error %

A. Fission & Activation Products

1. Total Release Ci 2.34E+02 9.30E+00 22

2. Average Release Rate For Period Ci/sec 3.01E+01 1.18E+00

3. Percent Of Applicable Limit %*

B. Radioicidines

1. Total locline-131 Ci 2.55E-02 3.84E-04 N/A***

2. Average Release Rate For Period Ci/sec 3.28E-03 4.89E-05

3. Percent Of Applicable Limit %*

C. Particulates

1. Particulates (Half-Lives>8 Days) Ci 2.33E-04 9.29E-05 N1A***

2. Average Release Rate For Period Ci/sec 3.OOE-05 1.81 E-05

3. Percent Of Applicable Limit %* *

4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOOE+00 D.Tritium 1.Total Release Ci 4.16E+00 8.96E+00 11

2. Average Release Rate For Period Ci/sec 5.35E-01 1.14E+00

3. Percent Of Applicable Limit

Applic3ble limits are expressed in terms of dose. See Table 6A of this report.

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

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-B Gaseous Effluents - Summation of All Releases Unit: 1 Starting: 1-Jul-2005 Ending: 31-Dec-2005 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release Ci 1.72E+01 4.33E+01 22

2. Average Release Rate For Period Ci/sec 2.17E+00 5.45E+00

3. Percent Of Applicable Limit %*

B. Radioir.dines

1. Total locline-131 Ci 2.48E-06 1.28E-05 ***N/A

2. Average Release Rate For Period Ci/sec 3.12E-07 1.61 E-06

3. Percent Of Applicable Limit %*

C. Particulates

1. Particulates (Half-Lives>8 Days) Ci O.OOOE+00 O.OQOE+00 ***N/A

2. Average Release Rate For Period Ci/sec O.OQOE+00 O.OQOE+00

3. Percent Of Applicable Limit %* *

4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOE+00 D.Tritium

1. Total Release Ci 7.87E+00 3.82E+00 11

2. Average Release Rate For Period Ci/sec 9.90E-01 4.81 E-01

3. Percent Of Applicable Limit

Applicable limits are expressed in terms of dose. See Table 6-B of this report.

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

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

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-A Gaseous Effluents-Ground Level Releases Unit: 1 Starting: 1-Jan-2005 Ending: 30-Jun-2005 Continuous Mode Batch Mode Nuclides lreleased Unit Quarter 1 Quarter 2 Quarter I Quarter 2 Fission Gases Kr-88 Ci 9.24E-03 0.00E+00 0.OOE+00 0.OOE+00 Kr-87 Ci 9.38E-03 0.OOE+00 0.OOE+00 0.OOE+00 Xe-1 38 Ci 1.39E-02 0.00E+00 0.OOE+00 0.OOE+00 Xe-135m Ci 1.66E-02 0.OOE+00 0.OOE+00 0.OOE+00 Kr-85m Ci 6.19E-03 0.OOE+00 2.02E-02 3.01 E-03 Xe-131m Ci 0.OOE+00 0.00E+00 3.00E+00 2.46E-02 Xe-1 33m Ci 0.OOE+00 0.00E+00 1.75E+00 7.32E-02 Xe-135 Ci 5.20E-01 7.26E-03 1.79E+00 1.82E-01 Kr-85 Ci 0.00E+00 0.OOE+00 6.05E+00 5.19E-01 Ar-41 Ci 2.93E-03 3.29E-02 6.15E-01 8.21 E-01 Xe-1 33 Ci 8.13E+00 1.17E+00 2.12E+02 6.46E+00 Total Ci 8.71 E+00 1.21 E+00 2.26E+02 8.09E+00 lodines 1-134 Ci 1.54E-07 0.00E+00 O.OOE+00 0.OOE+00 1-135 Ci 1.37E-05 0.00E+00 0.00E+00 0.00E+00 1-132 Ci 3.66E-03 O.OOE+00 0.OOE+00 O.OOE+00 1-133 Ci 1.34E-03 7.OOE-06 0.OOE+00 0.00E+00 1-131 Ci 2.55E-02 3.84E-04 0.OOE+00 0.OOE+00 Total Ci 3.05E-02 3.91 E-04 0.00E+00 0.OOE+00 Particulates Sr-89 Ci 2.26E-1 1 0.OOE+00 0.00E+00 0.00E+00 Nb-97 Ci 6.71E-07 0.OOE+00 0.00E+00 0.00E+00 Ru-1 03 Ci 7.51 E-07 0.OOE+00 0.00E+00 0.00E+00 Co-60 Ci 1.11E-06 0.OOE+00 0.00E+00 0.00E+00 Cs-1 37 Ci 5.88E2-06 0.00E+00 0.00E+00 0.00E+00 Cs-1 34 Ci 6.59E-06 0.00E+00 0.00E+00 0.00E+00 Ba-139 Ci 1.46E-05 0.00E+00 0.00E+00 0.00E+00 Cr-51 Ci 2.28E-05 0.00E+00 0.00E+00 0.00E+00 Rb-88 Ci 3.46E-05 0.OOE+00 0.00E+00 0.00E+00 Cs-1 38 Ci 6.56E-04 0.OOE+00 0.00E+00 0.00E+00 Br-82 Ci 4.88E-06 1.96E-06 0.00E+00 0.00E+00 Co-58 Ci 1.96E-04 9.29E-05 0.00E+00 0.00E+00 Total Ci 9.44E-04 9.48E-05 0.00E+00 0.00E+00 H-3 Ci 4.16E+00 8.96E+00 0.00E+00 0.00E+00

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

E1-13

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-B Gaseous Effluents-Ground Level Releases Unit: I Starting: 1-Jul-2005 Ending: 31-Dec-2005 Continuous Mode Batch Mode Nuclides Released Unit Quarter 3 Quarter 4 Quarter 3 Quarter 4 Fission Gases Xe-135m Ci O.OOE+00 6.91 E-04 O.OOE+00 O.OOE+00 Xe-131 Ci 0.00+00 O.OOE+00 9.34E-02 6.69E-03 Kr-85m Ci O.OOE+00 1.16E-04 6.49E-04 1.34E-02 Xe-133m Ci 0.00E+00 O.OOE+00 1.31E-01 1.32E-01 Xe-1 35 Ci 1.95E-03 1.80E-03 7.94E-02 1.56E-01 Kr-85 Ci O.OOE+00 0.00+00 9.95E-01 1.19E+00 Ar-41 Ci 5.13E-02 O.OOE+00 7.46E-01 3.20E+00 Xe-133 Ci 2.83E+00 1.42E+01 1.23E+01 2.44E+01 Total Ci 2.88E+00 1.422+01 1.43E+01 2.91E+01 lodines 1-131 Ci 2.48E-06 1.28E-05 O.OOE+00 O.OOE+00 1-132 Ci 0.00E+00 3.93E-08 O.OOE+00 O.OOE+00 1-133 Ci 1.81E-05 2.47E-5 O.OOE+00 O.OOE+00 1-135 Ci O.OOE+00 1.042-07 O.OOE+00 O.OOE+00 Total Ci 2.05E-05 3.77E-05 O.OOE+00 O.OOE+00 Particulate s Sr-89 Ci O.OOE+00 1.05E-11 O.OOE+00 O.OOE+00 Rb-88 Ci O.OOE+0o 6.82E-07 o.OOE+00 O.OOE+00 Ba-139 Ci O.OOE+00 8.49E-07 O.OOE+00 O.OOE+00 Br-82 Ci 2.61E-06 1.35E-06 O.OOE+00 O.OOE+00 Rb89 Ci O.OOE+00 5.41 E-06 O.OOE+00 O.OOE+00 Cs-1 38 Ci O.OOE+00 2.82E-05 O.OOE+00 O.OOE+00 Total Ci 2.61 E-05 3.65E-05 O.OOE+00 O.OOE+00 H-3 Ci 7.87E+00 3.82E+00 O.OOE+00 O.OOE+00

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

El-14

2005 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. Typeof Waste Unit Period Error %

a. Spent resins, filter sludges, evaporator m3 13.6 N/A bottoms, etc. Ci 167 +/-25%

b. Dry Active Waste, Compressible Waste m3 298.8 N/A Contaminated Equipment, etc. Ci 1.854 +/-25%

c. Irradiated Components, Control rn3 None N/A Rods, etc. Ci None N/A El-15

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT

2. Estimate of Maior Nuclide Composition (by type of waste)

Percent Ci

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

(nuclides determined by measurement)

H-3 0.158 2.63E-1 Be-7 0.045 7.55E-2 C-14 0.206 3.43E-1 Mn-54 3.031 5.1 E+0 Fe-55 26.045 4.34E+1 Co-57 0.305 5.09E-1 Co-58 6.515 1.09E+1 Co-60 12.521 2.09E+1 Ni-59 0.429 7.14E-1 Ni-63 48.695 8.11 E+1 Zn-65 0.039 6.43E-2 Sr-89 0.001 1.40E-3 Sr-90 0.004 6.60E-3 Zr-95 0.001 1.14E-3 Nb-95 0.014 2.41E-2 Ag-1 Om 0.001 1.43E-3 Sn-113 0.006 1.01E-2 Sb-124 0.007 1.12E-2 Sb-1 25 0.435 7.26E-1 Cs-134 0.733 1.22E+0 Cs-137 0.785 1.31 E+0 Ce-144 0.015 2.50E-2 Pu-238 0.000 9.03E-5 Pu-239 0.000 2.82E-5 Pu-240 0.000 2.82E-5 Pu-241 0.007 1.17E-2 El-16

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-A SOLID WASTE (RADIOACTIVE SHIPMENTS)

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

H-3 0.978 1.76E-2 C-14 0.030 5.47E-4 Cr-51 0.955 1.72E-2 Mn-54 0.029 5.24E-2 Fe-55 46.736 8.42E-1 Fe-59 0.302 5.43E-3 Co-57 0.140 2.53E-3 Co-58 17.818 3.21 E-1 Co-60 7.937 1.43E-1 Ni-59 0.005 9.67E-5 Ni-63 14.043 2.53E-1 Zn-65 0.059 1.07E-3 Sr-89 0.012 2.19E-4 Zr-95 0.744 1.34E-2 Nb-95 1.260 2.27E-2 Tc-99 0.001 1.64E-5 Ru-103 0.021 3.87E-4 Ag-1I1m 0.019 3.35E-4 Sn-1 13 0.053 9.56E-4 Sn-117m 0.003 5.15E-5 Sb-124 0.004 7.02E-5 Sb-125 0.538 9.69E-3 1-131 0.042 7.54E-4 Cs-134 4.341 7.82E-2 Cs-137 3.836 6.91E-2 Ba-140 0.009 1.70E-4 Ce-141 0.015 2.69E-4 Ce-144 0.069 1.25E-3 Cm-242 0.000 1.60E-6

c. Irradiated Components N/A N/A El-17

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-B SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid VWaste Disposition Number of Shipments Mode of Transportation Destination 4 Motor Freight (Hittman) Barnwell Waste Mgmt Facility 6 Motor Freight (Hittman) Duratek DAW Processing 3 Motor Freight (Hittman) Duratek Green is Clean

4. Irradialed Fuel Shipments (Disposition)

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

5. Solidification of Waste Was solidification performed? No If yes, solidification media: N/A El-18

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Introduction Potential closes to maximum individuals and the population around Watts Bar are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive effluents in the environment is estimated using meteorological data and riverflow data measured during the period. In this report, the doses resulting from releases are described and compared to limits established for Watts Bar.

Dose Limits The ODCM1 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 obtaired from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected close 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.

Airbome Discharge Points All releases from Watts Bar 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, and are presented for each quarter on pages El-25 through E1-52.

El-19

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Meteorolocrical Data Meteorological variables at Watts Bar are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46, and 91 meters above the ground. Quarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data. A joint frequency distribution gives 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.

Extemal Exmosure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for poinis at and beyond the unrestricted area boundary as described in the Watts Bar ODCM. The highest of these doses is then selected.

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

Organ Dose Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. F~or the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

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).

El-20

2005 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 Watts Bar. Parameters used to determine the doses are based on guidance liven 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 Watts Bar 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 Watts Bar, 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 cDde 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 Watts Bar, is an individual who obtains all of his drinking water at Dayton, TN, consumes fish caught from the Tennessee River between Watts Bar 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 Watts Bar. 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.

PoDulatioi1 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 -21

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Direct Radiation External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around WBN as part of the offsite Environmental Radiological Monitoring Program. The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged 16.5 mR/quarter at onsite (at or near the site boundary) stations and 15.25 mR/quarter at offsite stations or 1.25 mR/quarter higher onsite than at offisite 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 2-6 mR/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, ear:h 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 TLD 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 Watts Bar Offsite Dose Calculation Manual, 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 TLD measurements indicated that the highest onsite TLD reading outside the Radiological Control Area was 217 mrem. Using this value, subtracting an annual background value of approximately 61 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 35.62 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 well 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 Watts Bar 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 orcan 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 C;FR 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, thea 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.

El -22

2005 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 2.78E-02 mrad 5 mrad < 1% El1280 meters Beta Air 8.11E-02 mrad 10 mrad < 1% E/1280 meters Submersion Total Body 1.31E-02 mrem N/A N/A SE/1372 meters Skin 3.19E-02 mrem N/A N/A SE/1372 meters Organ Doses Infant/Thvroid 4.29E-01 mrem 7.5 mrem 5.7% SSW/3353 meters Child/Total Body 1.19-02 mrem 7.5 mrem < 1% WSW/1829 meters Populationi Doses Total Body Dose 4.45E-02 man-rem Maximum Organ Dose (organ) 7.1 1E-0I man-rem (thyroid)

Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 4.72E-03 mrad 5 mrad < 1% ESE/1250 meters Beta Air 6.08E-03mrad 10 mrad <1% ESE/1250 meters Submersion Total Body 2.69E-03 mrem N/A N/A SE/1372 meters Skin 4.95E-03 mrem N/A N/A SE/1372 meters Organ Doses I I I Child/ hyroid 9.64E-03 mrem 7.5 mrem < 1% WSW/1829 meters Child/Total Body 6.86E-03 mrem 7.5 mrem < 1% WSW/1829 meters Population Doses Total Body Dose 3.46E-02 man-rem Maximum Organ Dose (organ) 4.49E-02 man-rem (thyroid)

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

El-23

2005 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 7.57E-03 mrad 5 mrad < 1% ESE/1250 meters Beta Air 1.37E-02 mrad 10 mrad <1% ESE/1250 meters Submersion Total Body 4.08E-03 mrem N/A N/A SE/1372 meters Skin 8.31 E-03 mrem N/A N/A SE/1372 meters Organ Doses Child/Thyroid 5.66E-03 mrem 7.5 mrem < 1% ESE/6096 meters Child/Total Body 5.65E-03 mrem 7.5 mrem < 1% ESE/6096 meters PoDulation Doses Total Body Dose 2.71 E-02 man-rem Maximum Organ Dose (organ) 2.72E-02 man-rem (thyroid)

Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.32E-02 mrad 5 mrad < 1% ESE/1250 meters Beta Air 3.24E-02 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 1.34E-02 mrem N/A N/A SE/1372 meters Skin 2.45E-02 mrem N/A N/A SE/1372 meters Organ Doses II Child/Thvroid 4.22E-03 mrem 7.5 mrem < 1% S/2254 meters Child/Total Body 4.10E-03 mrem 7.5 mrem < 1% S/2254 meters Population Doses Total Body Dose 1.95E-02 man-rem Maximum Organ Dose (organ) 1.99E-02 man-rem (thyroid)

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

EI-24

2005 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 Adult Total Body 6.OE-03 1.5 mrem < 1%

Adult Bone 7.1 E-03 5 mrem <1 %

1 Child Thyroid 6.9E-03 5 mrem <1 %

Average Riverflow past WBN (cubic feet per second): 31,932 Population Doses Total Body Dose 2.7E-01 man-rem Maximum Organ Dose (organ) 2.7E-01 man-rem (Bone)

Second Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Adult Total Body 5.9E-03 1.5 mrem <1 %

Adult Liver 7.4E-03 5 mrem <1 %

Child Thyroid 1.5E-03 5 mrem <1 %

Average Riverflow past WBN (cubic feet per second): 20,093 Population Doses Total Body Dose 5.3E-02 man-rem Maximum Organ Dose (organ) 5.5E-02 man-rem (Liver)

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

El-25

2005 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 Adult Total Body 5.7E-04 1.5 mrem < 1%

Child Liver 6.7E-04 5 mrem <1 %

Child Thyroid 2.4E-04 5 mrem <1 %

Average Riverflow past WBN (cubic feet per second): 25,857 Population Doses Total Body Dose 1.2E-02 man-rem Maximum Organ Dose (organ) 1.2E-02 man-rem (Liver)

Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Adult Total Body 1.4E-03 1.5 mrem <1 %

Child Bone 1.6E-03 5 mrem <1 %

Child Thyroid 1.2E-03 5 mrem <1 %

Average Riverflow past WBN (cubic feet per second): 20,116 Population Doses Total Body Dose 5.7E-02 man-rem Maximum Organ Dose (organ) 5.8E-02 man-rem (Bone)

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

El-26

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 8 Total Dose from Fuel Cycle First Second Third Fourth l Dose l Quarter l Quarter l Quarter I Quarter Total Body or any Organ (except thyroid_

Total body air submersion 1.31 E-02 2.69E-03 4.08E-03 1.34E-02 Critical organ dose (air) 1.19E-02 6.86E-03 5.65E-03 4.10E-03 Total body dose (liquid) 6.OOE-03 5.90E-03 5.70E-04 1.40E-03 Maximum crgan dose (liquid) 7.10E-03 7.40E-03 6.70E-04 1.60E-03 Direct Radiation Dose O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Total 3.81E-02 2.29E-02 1.10E-02 2.05E-02 Cumulative Total Dose (mrem) 9.25E-02 Annual Dose Limit (mrem) 25 Percent of Limit 0.37%

Thyroid Total body air submersion i 1.31 E-02 2.69E-03 4.08E-03 1.34E-02 l Thyroid dose (airborne) 4.29E-01 9.64E-03 5.66E-03 4.22E-03 Total body dose (liquid) 6.OOE-03 5.90E-03 5.70E-04 1.40E-03 Thyroid dose (liquid) 6.90E-03 1.50E-03 2.40E-04 1.20E-03 Direct Radiation Dose O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+ 00 Total 4.55E-01 1.97E-02 1.06E-02 2.02E-02 Cumulative Total Dose (mrem) 5.06E-01 Annual Dose Limit (mrem) 75 Percent of Limit 0.67%

E1-27

2005 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, 2005 - MAR 31, 2005 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 0.000 0.000 0.140 0.000 0.000 0.000 0.140 NNE 0.000 0.000 0.000 0.000 0.140 0.234 0.094 0.000 0.000 0.468 NE 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.094 ENE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 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 0.047 0.000 0.000 0.000 0.000 0.000 0.047 S 0.000 0.000 0.000 0.000 0.000 0.140 0.000 0.000 0.000 0.140 SSW 0.000 0.000 0.OOC 0.000 0.187 0.609 0.000 0.000 0.000 0.796 SW 0.000 0.000 0.00C 0.000 0.047 0.047 0.000 0.000 0.000 0.094 WSW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 NW 0.000 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.094 NNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.000 0.187 0.375 1.545 0.094 0.000 0.000 2.200 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS A 47 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 47 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 0 METEORO;OGICAL FACILITY: Watts Bar Nuclear Plant STABILI"Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200!i/05/31 MEAN WIND SPEED - 8.53 NOTE: 'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-28

2005 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, 2005 - MAR 31, 2005 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 0.140 0.140 0.140 0.047 0.000 0.000 0.468 NNE 0.000 0.000 0.000 0.187 0.375 0.281 0.094 0.000 0.000 0.936 NE 0.000 0.000 0.047 0.234 0.047 0.000 0.000 0.000 0.000 0.328 ENE 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.094 E 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SSE 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 S 0.000 0.000 0.000 0.047 0.140 0.234 0.000 0.000 0.000 0.421 SSW 0.000 0.000 0.000 0.047 0.328 0.328 0.000 0.000 0.000 0.702 SW 0.000 0.000 0.047 0.047 0.140 0.000 0.000 0.000 0.000 0.234 WSW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.094 WNt. 0.000 0.000 0.000 0.000 0.094 0.187 0.094 0.000 0.000 0.375 NW 0.000 0.000 0.000 0.000 0.047 0.187 0.140 0.000 0.000 0.375 NtrN4 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.094 0.890 1.358 1.498 0.421 0.000 0.000 4.260 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS B 91 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 91 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200f./05/31 MEAN WIND SPEED - 7.82 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-29

2005 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, 2005 - MAR 31, 2005 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 0.094 0.047 0.140 0.000 0.000 0.000 0.281 N1IE 0.000 0.000 0.000 0.281 0.140 0.281 0.1B7 0.000 0.000 0.890 NE 0.000 0.000 0.094 0.281 0.140 0.000 0.000 0.000 0.000 0.515 ENE 0.000 0.000 0.094 0.094 0.000 0.000 0.000 0.000 0.000 0.187 E 0.000 0.000 0.140 0.094 0.000 0.000 0.000 0.000 0.000 0.234 ESE 0.000 0.000 0.000 0.140 0.000 0.047 0.000 0.000 0.000 0.187 SE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 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.OOC 0.047 0.187 0.094 0.000 0.000 0.000 0.328 SSW 0.000 0.000 0.047 0.047 0.421 0.187 0.000 0.000 0.000 0.702 SW 0.000 0.000 0.OOC 0.047 0.094 0.047 0.000 0.000 0.000 0.187 WSW 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.094 W 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.094 WNW 0.000 0.000 0.00C 0.047 0.047 0.328 0.000 0.000 0.000 0.421 NW 0.000 0.000 0.000 0.047 0.047 0.187 0.000 0.000 0.000 0.281 NNW 0.000 0.000 0.047 0.000 0.000 0.187 0.000 0.000 0.000 0.234 SUBTOTAL 0.000 0.000 0.421 1.264 1.217 1.545 0.234 0.000 0.000 4.682 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 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 2136 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILI. Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/05/31 MEAN WIND SPEED - 6.94 NOTE: OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-30

2005 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, 2005 - MAR 31, 2005 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 0.000 0.515 0.983 1.451 2.715 0.094 0.000 0.000 5.761 NNE 0.002 0.094 0.375 1.124 1.498 2.013 0.281 0.000 0.000 5.386 NE 0.004 0.094 0.983 0.890 0.609 0.515 0.000 0.000 0.000 3.094 ENE 0.005 0.047 1.264 0.328 0.234 0.000 0.000 0.000 0.000 1.878 E 0.002 0.000 0.515 0.000 0.000 0.000 0.000 0.000 0.000 0.517 ESE 0.001 0.047 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.235 SE 0.002 0.047 0.562 0.000 0.094 0.047 0.000 0.000 0.000 0.752 SSE 0.002 0.140 0.328 0.375 0.047 0.000 0.000 0.000 0.000 0.891 S 0.004 0.000 0.936 1.077 0.328 0.468 0.094 0.000 0.000 2.906 SSW 0.006 0.094 1.264 1.873 1.498 1.545 0.140 0.000 0.000 6.419 SW 0.004 0.140 0.796 0.796 0.140 0.094 0.000 0.000 0.000 1.970 WSW 0.004 0.187 0.796 0.328 0.375 0.2B1 0.000 0.000 0.000 1.970 W 0.003 0.187 0.468 0.234 0.421 0.234 0.000 0.000 0.000 1.548 WNW 0.002 0.140 0.375 0.515 0.375 1.124 0.000 0.000 0.000 2.530 NW 0.002 0.094 0.328 0.375 0.562 1.358 0.281 0.047 0.000 3.045 NNW 0.002 0.000 0.421 0.234 0.468 1.311 0.234 0.000 0.000 2.670 SUBTOTAL 0.047 1.311 10.112 9.129 8.099 11.704 1.124 0.047 0.000 41.573 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS D 888 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 888 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SP:IED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200.3/05/31 MEAN WI14D SPEED - 5.91 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El -31

2005 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, 2005 - MAR 31, 2005 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 0.094 0.655 0.375 0.187 0.000 0.000 0.000 0.000 1.311 NINE 0.000 0.234 0.515 0.094 0.047 0.047 0.000 0.000 0.000 0.936 NE 0.000 0.094 0.983 0.515 0.140 0.047 0.000 0.000 0.000 1.779 ENE 0.000 0.047 0.936 0.234 0.000 0.000 0.000 0.000 0.000 1.217 E 0.000 0.328 0.187 0.000 0.000 0.047 0.000 0.000 0.000 0.562 ESE 0.000 0.234 0.187 0.047 0.047 0.000 0.000 0.000 0.000 0.515 SE 0.000 0.187 0.187 0.047 0.187 0.094 0.000 0.000 0.000 0.702 SSE 0.000 0.281 0.281 0.094 0.000 0.047 0.000 0.000 0.000 0.702 S 0.000 0.094 0.702 0.375 0.375 0.187 0.000 0.000 0.000 1.732 SSW 0.000 0.234 1.451 1.545 1.030 0.515 0.000 0.000 0.000 4.775 SW 0.000 0.375 1.077 0.515 0.094 0.047 0.000 0.000 0.000 2.107 WSW 0.000 0.281 0.749 0.094 0.047 0.000 0.000 0.000 0.000 1.170 W 0.000 0.375 0.749 0.140 0.000 0.000 0.000 0.000 0.000 1.264 WNW 0.000 0.375 0.562 0.328 0.281 0.000 0.000 0.000 0.000 1.545 NW 0.000 0.421 0.890 0.375 0.328 0.000 0.000 0.000 0.000 2.013 NNW 0.000 0.094 0.234 0.234 0.234 0.094 0.000 0.000 0.000 0.890 SUBTOTAL 0.000 3.745 10.346 5.009 2.996 1.124 0.000 0.000 0.000 23.221 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS E 496 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 496 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 0 METEORO.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200!5/05/31 MEAN WIND SPEED - 3.43 NOTE: 'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-32

2005 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, 2005 - MAR 31, 2005 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 0.234 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.281 NNE 0.000 0.234 0.187 0.047 0.000 0.000 0.000 0.000 0.000 0.468 NE 0.000 0.094 0.328 0.047 0.047 0.000 0.000 0.000 0.000 0.515 ENE 0.000 0.140 0.328 0.047 0.000 0.000 0.000 0.000 0.000 0.515 E 0.000 0.187 0.234 0.000 0.000 0.000 0.000 0.000 0.000 0.421 ESE 0.000 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.140 SE 0.000 0.140 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.234 SSE 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 S 0.000 0.140 0.468 0.094 0.000 0.000 0.000 0.000 0.000 0.702 SSW 0.000 0.328 0.515 0.187 0.000 0.000 0.000 0.000 0.000 1.030 SW 0.000 0.515 0.46E 0.000 0.000 0.000 0.000 0.000 0.000 0.983 WSW 0.000 0.936 0.609 0.000 0.000 0.000 0.000 0.000 0.000 1.545 W 0.000 0.702 0.749 0.000 0.000 0.000 0.000 0.000 0.000 1.451 WNW 0.000 0.281 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.562 NW 0.000 0.562 0.234 0.000 0.000 0.000 0.000 0.000 0.000 0.796 NNW 0.000 0.140 0.328 0.000 0.000 0.000 0.000 0.000 0.000 0.468 SUBTOTAL 0.000 4.822 4.916 0.421 0.047 0.000 0.000 0.000 0.000 10.206 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS F 218 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 218 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SP:IED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/05/31 MEAN WIND SPEED - 1.69 NOTE: IOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-33

2005 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 JAN 1, 2005 - MAR 31, 2005 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 0.006 0.421 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.615 NNE 0.007 0.328 0.328 0.000 0.000 0.000 0.000 0.000 0.000 0.662 NE 0.010 0.468 0.468 0.000 0.000 0.000 0.000 0.000 0.000 0.946 ENE 0.015 0.515 0.936 0.000 0.000 0.000 0.000 0.000 0.000 1.466 E 0.008 0.468 0.281 0.000 0.000 0.000 0.000 0.000 0.000 0.757 ESE 0.004 0.234 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.378 SE 0.002 0.187 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.236 SSE 0.004 0.281 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.378 S 0.005 0.468 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.520 SSW 0.008 0.655 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.757 SW 0.011 0.655 0.421 0.000 0.000 0.000 0.000 0.000 0.000 1.088 WSW 0.017 0.936 0.749 0.047 0.000 0.000 0.000 0.000 0.000 1.750 W 0.020 1.451 0.468 0.000 0.000 0.000 0.000 0.000 0.000 1.939 WU W 0.007 0.609 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.709 NW 0.010 0.609 0.328 0.000 0.000 0.000 0.000 0.000 0.000 0.946 NNW 0.007 0.468 0.234 0.000 0.000 0.000 0.000 0.000 0.000 0.709 SUBTOTAL 0.140 8.755 4.916 0.047 0.000 0.000 0.000 0.000 0.000 13.858 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2136 TOTAL HOURS OF STABILITY CLASS G 296 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 296 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2136 TOTAL HOURS CALM 3 METEORO:.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ONt DELTA-T BETOEEN 9.51 AND 45.63 METERS WIND SP:IED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/05/31 MEAN WIND SPEED - 1.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El -34

2005 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<--l.9 C/100 M)

Watts Bar Nuclear Plant APR 1, 2005 - JUN 30, 2005 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 lN 0.000 0.000 0.000 0.186 0.233 0.047 0.000 0.000 0.000 0.466 NNE 0.000 0.000 0.000 0.047 0.280 0.186 0.000 0.000 0.000 0.513 NE 0.000 0.000 0.000 0.000 0.140 0.047 0.000 0.000 0.000 0.186 ENE 0.000 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.186 E 0.000 0.000 0.047 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 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.047 0.373 0.140 0.000 0.000 0.000 0.559 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 WNW 0.000 0.000 0.000 0.000 0.000 0.233 0.000 0.000 0.000 0.233 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.047 0.093 0.000 0.000 0.000 0.140 SUBTOTAL 0.000 0.000 0.047 0.373 1.165 0.839 0.000 0.000 0.000 2.423 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS A 52 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 52 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPE'ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200',/08/19 MEAN WIND SPEED - 7.25 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-35

2005 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<--l.7 C/100 M)

Watts Bar Nuclear Plant APR 1, 2005 - JUN 30, 2005 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 0.140 0.047 0.233 0.000 0.000 0.000 0.419 NNE 0.000 0.000 0.047 0.233 0.326 0.466 0.000 0.000 0.000 1.072 NE 0.000 0.000 0.047 0.093 0.093 0.047 0.000 0.000 0.000 0.280 ENE 0.000 0.000 0.093 0.047 0.047 0.140 0.000 0.000 0.000 0.326 E 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 S 0.000 0.000 0.000 0.047 0.140 0.140 0.000 0.000 0.000 0.326 SSW 0.000 0.000 0.000 0.233 0.419 0.186 0.047 0.000 0.000 0.885 SW 0.000 0.000 0.OOC 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.00C 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.00C 0.000 0.047 0.000 0.000 0.000 0.000 0.047 WNW 0.000 0.000 0.000 0.000 0.047 0.140 0.047 0.000 0.000 0.233 NW 0.000 0.000 0.000 0.047 0.000 0.140 0.000 0.000 0.000 0.186 NNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.280 0.932 1.165 1.584 0.093 0.000 0.000 4.054 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS B 87 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 87 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEORO.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEtt 9.51 AND 45.63 METERS WIND SP`ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/08/19 MEAN WIND SPEED - 6.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-36

2005 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, 2005 - JUN 30, 2005 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 0.093 0.140 0.186 0.047 0.000 0.000 0.000 0.466 NNE 0.000 0.000 0.373 0.326 0.140 0.186 0.000 0.000 0.000 1.025 NE 0.000 0.000 0.047 0.233 0.093 0.047 0.000 0.000 0.000 0.419 ENE 0.000 0.000 0.280 0.140 0.000 0.000 0.000 0.000 0.000 0.419 E 0.000 0.000 0.186 0.047 0.047 0.000 0.000 0.000 0.000 0.280 ESE 0.000 0.000 0.233 0.047 0.000 0.000 0.000 0.000 0.000 0.280 SE 0.000 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.140 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 0.513 0.233 0.093 0.047 0.000 0.000 0.885 SSW 0.000 0.000 0.093 0.746 0.559 0.140 0.000 0.000 0.000 1.538 SW 0.000 0.000 0.000 0.233 0.000 0.000 0.000 0.000 0.000 0.233 WSW 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.140 WNW 0.000 0.000 0.000 0.000 0.093 0.186 0.047 0.000 0.000 0.326 NW 0.000 0.000 0.000 0.000 0.140 0.233 0.000 0.000 0.000 0.373 NNW 0.000 0.000 0.000 0.093 0.093 0.047 0.000 0.000 0.000 0.233 SUBTOTAL 0.000 0.000 1.398 2.749 1.631 0.979 0.093 0.000 0.000 6.850 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HNURS OF STABILITY CLASS C 147 TOTAL H)URS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 147 TOTAL H)URS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILIrY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/08/19 MEAN WIAD SPEED - 5.39 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-37

2005 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, 2005 - JUN 30, 2005 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 14 0.000 0.047 0.652 0.699 0.513 0.326 0.000 0.000 0.000 2.237 NNE 0.000 0.047 0.699 0.373 0.513 0.373 0.047 0.000 0.000 2.050 NE 0.000 0.047 0.652 0.792 0.419 0.093 0.000 0.000 0.000 2.004 ENE 0.000 0.000 0.885 0.652 0.373 0.280 0.000 0.000 0.000 2.190 E 0.000 0.047 0.606 0.047 0.140 0.000 0.000 0.000 0.000 0.839 ESE 0.000 0.093 0.466 0.186 0.140 0.000 0.000 0.000 0.000 0.885 SE 0.000 0.093 0.513 0.093 0.047 0.047 0.000 0.000 0.000 0.792 SSE 0.000 0.047 0.839 0.140 0.093 0.047 0.000 0.000 0.000 1.165 S 0.000 0.186 2.004 1.351 0.233 0.513 0.000 0.000 0.000 4.287 SSW 0.000 0.093 1.911 2.610 0.932 0.466 0.000 0.000 0.000 6.011 SW 0.000 0.140 0.792 0.885 0.233 0.000 0.000 0.000 0.000 2.050 WSW 0.000 0.140 0.839 0.373 0.000 0.047 0.000 0.000 0.000 1.398 W 0.000 0.047 0.606 0.233 0.280 0.466 0.000 0.000 0.000 1.631 WNW 0.000 0.140 0.373 0.466 0.885 0.606 0.000 0.000 0.000 2.470 NW 0.000 0.000 0.466 0.233 0.746 0.233 0.000 0.000 0.000 1.678 NNW 0.000 0.000 0.606 0.513 0.186 0.419 0.000 0.000 0.000 1.724 SUBTOTAL 0.000 1.165 12.908 9.646 5.732 3.914 0.047 0.000 0.000 33.411 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS D 717 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 717 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROUOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI7ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/08/19 MEAN WIND SPEED - 4.37 NOTE: '"OTALSAND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-38

2005 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, 2005 - JUN 30, 2005 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 0.093 0.606 0.652 0.419 0.047 0.000 0.000 0.000 1.822 NNE 0.003 0.280 0.186 0.093 0.093 0.000 0.000 0.000 0.000 0.655 NE 0.003 0.093 0.419 0.186 0.000 0.000 0.000 0.000 0.000 0.702 ENE 0.006 0.280 0.652 0.280 0.000 0.000 0.000 0.000 0.000 1.217 E 0.003 0.140 0.373 0.140 0.093 0.000 0.000 0.000 0.000 0.749 ESE 0.002 0.233 0.140 0.093 0.000 0.000 0.000 0.000 0.000 0.468 SE 0.003 0.373 0.140 0.047 0.047 0.000 0.000 0.000 0.000 0.609 SSE 0.004 0.233 0.419 0.093 0.093 0.000 0.000 0.000 0.000 0.843 S 0.007 0.513 0.699 0.419 0.093 0.140 0.000 0.000 0.000 1.871 SSW 0.017 0.513 2.237 0.979 0.373 0.047 0.000 0.000 0.000 4.164 SW 0.012 0.932 1.118 0.140 0.047 0.047 0.000 0.000 0.000 2.296 WSW 0.007 0. 326 0.885 0.000 0.047 0.000 0.000 0.000 0.000 1.265 W 0.008 0.746 0.513 0.373 0.047 0.000 0.000 0.000 0.000 1.685 WNW 0.007 0. 513 0.606 0.186 0.140 0.000 0.000 0.000 0.000 1.451 NW 0.003 0.280 0.233 0.233 0.140 0.047 0.000 0.000 0.000 0.935 NNW 0.004 0.140 0.513 0.559 0.699 0.047 0.000 0.000 0.000 1.961 SUBTOTAL 0.093 5.685 9.739 4.473 2.330 0.373 0.000 0.000 0.000 22.693 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS E 487 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 487 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200!i/08/19 MEAN WIND SPEED - 2.95 NOTE: "OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-39

2005 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, 2005 - JUN 30. 2005 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 0.233 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.419 NNE 0.000 0.280 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.373 NE 0.000 0.093 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.233 ENE 0.000 0.233 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.466 E 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.186 ESE 0.000 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.093 0.047 0.047 0.000 0.047 0.000 0.000 0.000 0.233 SSE 0.000 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.186 S 0.000 0.280 0.326 0.000 0.000 0.000 0.000 0.000 0.000 0.606 SSW 0.000 0.699 1.025 0.000 0.000 0.000 0.000 0.000 0.000 1.724 SW 0.000 0.885 0.652 0.047 0.000 0.000 0.000 0.000 0.000 1.584 WSW 0.000 1.072 0.885 0.000 0.000 0.000 0.000 0.000 0.000 1.957 W 0.000 1.491 0.699 0.000 0.000 0.000 0.000 0.000 0.000 2.190 W14W 0.000 1.631 0.326 0.047 0.000 0.000 0.000 0.000 0.000 2.004 NW 0.000 1.118 0.419 0.047 0.000 0.000 0.000 0.000 0.000 1.584 NNW 0.000 0.466 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.652 SUBTOTAL 0.000 8.947 5.312 0.280 0.000 0.047 0.000 0.000 0.000 14.585 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS F 313 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 313 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEORO:OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPCED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/08/19 MEAN WIND SPEED - 1.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-40

2005 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, 2005 - JUN 30, 2005 WIND WIND SPEEDIMPH)

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 0.326 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.377 NNE 0.002 0.186 O.OOC 0.000 0.000 0.000 0.000 0.000 0.000 0.169 NE 0.002 0.047 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.141 ENE 0.007 0.419 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.566 E 0.004 0.326 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.330 ESE 0.001 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SE 0.002 0.140 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.189 SSE 0.004 0.373 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.377 S 0.003 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.236 SSW 0.009 0.652 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.802 SW 0.015 0.792 0.466 0.000 0.000 0.000 0.000 0.000 0.000 1.273 WSW 0.026 1.491 0.699 0.000 0.000 0.000 0.000 0.000 0.000 2.216 W 0.038 2.423 0.792 0.000 0.000 0.000 0.000 0.000 0.000 3.253 WNW 0.027 2.097 0.186 0.000 0.000 0.000 0.000 0.000 0.000 2.310 NW 0.031 2.004 0.606 0.000 0.000 0.000 0.000 0.000 0.000 2.640 NNW 0.012 0.699 0.280 0.000 0.000 0.000 0.000 0.000 0.000 0.990 SUBTOTAL 0.186 12.255 3.541 0.000 0.000 0.000 0.000 0.000 0.000 15.983 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2146 TOTAL HOURS OF STABILITY CLASS G 343 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 343 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM METEORO9.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200.5/08/19 MEAN WIND SPEED - 1.21 NOTE: '.OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-41

2005 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 JUL 1, 2005 - SEP 30, 2005 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.000 0.092 0.414 0.276 0.184 0.000 0.000 0.000 0.967 NNE 0.000 0.000 0.092 0.460 0.460 0.092 0.000 0.000 0.000 1.105 NE 0.000 0.000 0.322 0.322 0.092 0.092 0.000 0.000 0.000 0.829 ENE 0.000 0.000 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.276 E 0.000 0.000 0.368 0.046 0.046 0.000 0.000 0.000 0.000 0.460 ESE 0.000 0.000 0.276 0.092 0.000 0.000 0.000 0.000 0.000 0.368 SE 0.000 0.000 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.230 SSE 0.000 0.000 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.230 S 0.000 0.000 0.184 0.046 0.092 0.000 0.000 0.000 0.000 0.322 SSW 0.000 0.000 0.138 0.414 0.092 0.000 0.000 0.000 0.000 0.645 SW 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.000 0.184 WSW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.138 NW 0.000 0.000 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.184 NNW 0.000 0.000 0.092 0.092 0.184 0.046 0.000 0.000 0.000 0.414 SUBTOTAL 0.000 0.000 2.210 2.394 1.381 0.414 0.000 0.000 0.000 6.400 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS A 139 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 139 TOTAL HOURS OF VALID WINO DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEORO.OGICAL FACILITY: Watts Bar Nuclear Plant STABILI'Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200 5/01/19 MEAN WIND SPEED - 4.55 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-42

2005 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, 2005 - SEP 30, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.000 0.138 0.138 0.138 0.046 0.000 0.000 0.000 0.460 NNE 0.000 0.000 0.092 0.414 0.368 0.092 0.000 0.000 0.000 0.967 NE 0.000 0.000 0.230 0.276 0.046 0.000 0.000 0.000 0.000 0.552 ENE 0.000 0.000 0.184 0.138 0.000 0.000 0.000 0.000 0.000 0.322 E 0.000 0.000 0.230 0.230 0.000 0.000 0.000 0.000 0.000 0.460 ESE 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.000 0.184 SE 0.000 0.000 0.138 0.000 0.000 0.046 0.000 0.000 0.000 0.184 SSE 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.138 S 0.000 0.000 0.276 0.184 0.046 0.000 0.000 0.000 0.000 0.506 SSW 0.000 0.000 0.138 0.552 0.184 0.138 0.000 0.000 0.000 1.013 SW 0.000 0.000 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.230 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 NW 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 NNW 0.000 0.000 0.046 0.092 0.046 0.138 0.000 0.000 0.000 0.322 SUBTOTAL 0.000 0.000 1.796 2.394 0.875 0.460 0.000 0.000 0.000 5.525 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS B 120 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 120 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/19 MEAN WIND SPEED - 4.48 NOTE: OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-43

2005 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, 2005 - SEP 30, 2005 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 0.184 0.506 0.138 0.046 0.000 0.000 0.000 0.875 NNE 0.000 0.000 0.138 0.599 0.322 0.092 0.000 0.000 0.000 1.151 NE 0.000 0.000 0.460 0.184 0.138 0.000 0.000 0.000 0.000 0.783 ENE 0.000 0.000 0.184 0.230 0.092 0.000 0.000 0.000 0.000 0.506 E 0.000 0.000 0.276 0.046 0.000 0.000 0.000 0.000 0.000 0.322 ESE 0.000 0.000 0.276 0.046 0.000 0.000 0.000 0.000 0.000 0.322 SE 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SSE 0.000 0.000 0.230 0.046 0.000 0.000 0.046 0.000 0.000 0.322 S 0.000 0.000 0.184 0.368 0.184 0.000 0.000 0.046 0.000 0.783 SSW 0.000 0.000 0.322 0.506 0.138 0.092 0.000 0.000 0.000 1.059 SW 0.000 0.000 0.138 0.276 0.000 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 W 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.138 WNW 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.138 NW 0.000 0.000 0.184 0.000 0.046 0.000 0.000 0.000 0.000 0.230 NNW 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 SUBTOTAL 0.000 0.046 2.901 2.993 1.105 0.230 0.046 0.046 0.000 7.366 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 160 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILI'Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/19 MEAN WIND SPEED - 4.25 NOTE: ¶OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-44

2005 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, 2005 - SEP 30, 2005 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 0.506 0.875 0.368 0.276 0.000 0.000 0.000 2.026 NNE 0.000 0.000 0.460 0.967 0.368 0.414 0.000 0.000 0.000 2.210 NE 0.000 0.000 0.691 0.829 0.322 0.092 0.000 0.000 0.000 1.934 ENE 0.000 0.046 0.645 0.691 0.368 0.230 0.000 0.000 0.000 1.980 E 0.000 0.092 0.506 0.184 0.000 0.000 0.000 0.000 0.000 0.783 ESE 0.000 0.000 0.368 0.046 0.000 0.092 0.000 0.000 0.000 0.506 SE 0.000 0.046 0.645 0.046 0.184 0.092 0.000 0.000 0.000 1.013 SSE 0.000 0.000 0.737 0.138 0.092 0.230 0.046 0.000 0.000 1.243 S 0.000 0.184 1.105 0.967 0.506 0.184 0.230 0.046 0.000 3.223 SSW 0.000 0.138 1.796 1.934 0.645 0.322 0.138 0.000 0.000 4.972 SW 0.000 0.414 0.875 0.322 0.184 0.000 0.000 0.000 0.000 1.796 WSW 0.000 0.230 0.460 0.184 0.000 0.000 0.000 0.000 0.000 0.875 W 0.000 0.184 0.322 0.092 0.046 0.000 0.000 0.000 0.000 0.645 Wlr4 0.000 0.092 0.414 0.184 0.046 0.000 0.000 0.000 0.000 0.737 NW 0.000 0.046 0.322 0.184 0.000 0.046 0.046 0.000 0.000 0.645 NNW 0.000 0.000 0.414 0.184 0.184 0.138 0.000 0.000 0.000 0.921 SUBTOTAL 0.000 1.473 10.267 7.827 3.315 2.118 0.460 0.046 0.000 25.506 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS D 558 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 554 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILIry BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/01/19 MEAN WI4D SPEED - 4.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-45

2005 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, 2005 - SEP 30, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.184 0.276 0.4 60 0.092 0.000 0. 000 0.000 0.000 1.013 NNE 0.000 0.322 0.4 60 0.184 0.000 0.000 0.000 0.000 0.000 0.967 NE 0.000 0.322 0.506 0.368 0.092 0.0 92 0.000 0.000 0.000 1.381 ENE 0.000 0.092 0.829 0.000 0.092 0.000 0.000 0.000 0.000 1.013 E 0.000 0.276 0.4 60 0.000 0.046 0.000 0.000 0.000 0.000 0.783 ESE 0.000 0.230 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.4 14 SE 0.000 0.276 0.230 0.046 0.000 0.092 0.000 0.000 0.000 0.645 SSE 0.000 0.230 0.230 0.092 0.184 0.138 0.04 6 0.000 0.000 0. 921 S 0.000 0.691 1.289 0.4 60 0.460 0.230 0.000 0.000 0.000 3.131 SSW 0.000 1.013 2.532 1.335 0.368 0.046 0.000 0.000 0.000 5.295 SW 0.000 0.691 1.243 0.138 0.000 0.000 0.000 0.000 0.000 2. 072 WSW 0.000 1.013 0.783 0.046 0.000 0 .000 0.000 0.000 0.000 1.842 W 0.000 1.059 0.783 0.046 0.04 6 0.000 0.000 0.000 0.000 1.934 WNW 0.000 1.473 1. 197 0.138 0.046 0.000 0.000 0.000 0.000 2.855 NW 0.000 1.013 1.013 0.092 0.04 6 0.000 0.000 0.000 0.000 2. 164 NNW 0.000 0.414 0.506 0.230 0.04 6 0.000 0.000 0.000 0.000 1.197 SUBTOTAL 0.000 9.300 12.523 3.637 1.519 0.599 0.046 0.000 0.000 27.624 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS E 602 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 600 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEOROL.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/19 MEAN WIND SPEED - 2.46 NOTE: "OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El -46

2005 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, 2005 - SEP 30, 2005 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 0.322 0.276 0.046 0.000 0.000 0.000 0.000 0.000 0.646 NNE 0.001 0.092 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.231 NE 0.001 0.230 0.230 0.046 0.000 0.000 0.000 0.000 0.000 0.508 ENE 0.001 0.276 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.462 E 0.001 0.092 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.231 ESE 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.138 S 0.001 0.322 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.508 SSW 0.001 0.276 0.276 0.000 0.000 0.000 0.000 0.000 0.000 0.554 SW 0.003 0.737 0.506 0.000 0.000 0.000 0.000 0.000 0.000 1.246 WSW 0.006 1.243 1.013 0.000 0.000 0.000 0.000 0.000 0.000 2.262 W 0.008 2.578 0.506 0.000 0.000 0.000 0.000 0.000 0.000 3.092 WNW 0.010 3.361 0.875 0.000 0.000 0.000 0.000 0.000 0.000 4.246 NW 0.008 2.072 1.151 0.000 0.000 0.000 0.000 0.000 0.000 3.231 NNW 0.003 0.691 0.46C 0.000 0.000 0.000 0.000 0.000 0.000 1.154 SUBTOTAL 0.046 12.477 6.123 0.092 0.000 0.000 0.000 0.000 0.000 18.738 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS F 407 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 407 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 1 METEORO.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 DATE PRINTED: 2006/01/19 MEAN WIND SPEED - 1.37 NOTE: OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-47

2005 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, 2005 - SEP 30, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.184 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.230 NNE 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.138 NE 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.138 ENE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.13E 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SSE 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.138 S 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SW 0.000 0.276 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.414 WSW 0.000 0.599 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.783 W 0.000 1.473 0.414 0.000 0.000 0.000 0.000 0.000 0.000 1.888 WNW 0.000 1.427 0.368 0.000 0.000 0.000 0.000 0.000 0.000 1.796 NW 0.000 1.611 0.645 0.000 0.000 0.000 0.000 0.000 0.000 2.256 NNW 0.000 0.460 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.599 SUBTOTAL 0.000 6.538 2.302 0.000 0.000 0.000 0.000 0.000 0.000 8.840 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2178 TOTAL HOURS OF STABILITY CLASS G 192 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 192 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2172 TOTAL HOURS CALM 0 METEORO.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED OJ DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/01/19 MEAN WIND SPEED - 1.25 NOTE: IOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-48

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCEtTAGE FREQUENCIES OF WrND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<--1.9 C/100 M)

Watts Bar Nuclear Plant OCT 1, 2005 - DEC 31, 2005 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.000 0.046 0.046 0.228 0.365 0.000 0.000 0.000 0.684 NNE 0.000 0.000 0.000 0.274 0.502 0.365 0.000 0.000 0.000 1.140 NE 0.000 0.000 0.000 0.319 0.091 0.046 0.000 0.000 0.000 0.456 ENE 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.091 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.046 0.182 0.000 0.091 0.000 0.000 0.000 0.319 SSW 0.000 0.000 0.000 0.137 0.502 0.684 0.000 0.000 0.000 1.322 SW 0.000 0.000 0.000 0.046 0.182 0.182 0.000 0.000 0.000 0.410 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.046 0.137 0.000 0.000 0.000 0.182 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.137 0.046 0.000 0.000 0.000 0.182 SUBTOTAL 0.000 0.000 0.137 1.094 1.687 2.052 0.000 0.000 0.000 4.970 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HOURS OF STABILITY CLASS A 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEORO:IOGICAL FACILITY: Watts Bar Nuclear Plant STABILI'Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS wrNo SPl:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/30 MEAN WIND SPEED - 6.97 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-49

2005 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 OCT 1, 2005 - DEC 31, 2005 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 0.274 0.046 0.182 0.000 0.000 0.000 0.502 NUE 0.000 0.000 0.046 0.410 0.593 0.365 0.000 0.000 0.000 1.414 NE 0.000 0.000 0.182 0.274 0.046 0.000 0.000 0.000 0.000 0.502 ENE 0.000 0.000 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.182 E 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 SE 0.000 0.000 0.091 0.046 0.000 0.000 0.000 0.000 0.000 0.137 SSE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 5 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 SSW 0.000 0.000 0.046 0.410 0.228 0.182 0.046 0.000 0.000 0.912 SW 0.000 0.000 0.000 0.319 0.046 0.000 0.000 0.000 0.000 0.365 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.091 0.046 0.046 0.000 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.228 0.000 0.000 0.000 0.000 0.000 0.22B SUBTOTAL 0.000 0.000 0.502 2.417 1.049 0.821 0.046 0.000 0.000 4.834 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HOURS OF STABILITY CLASS B 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEORO:,OGICAL FACILITY: Watts Bar Nuclear Plant STABILI'Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/30 MEAN WIND SPEED - 5.48 NOTE: 'OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-50

2005 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, 2005 - DEC 31, 2005 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 0.091 0.182 0.137 0.319 0.000 0.000 0.000 0.730 NNE 0.000 0.000 0.091 0.182 0.365 0.319 0.000 0.000 0.000 0.958 NE 0.000 0.000 0.182 0.182 0.046 0.000 0.000 0.000 0.000 0.4 10 ENE 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 E 0.000 0.000 0.0 91 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0 .000 0.091 0.046 0.000 0.000 0.000 0.000 0.000 0.137 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 0.182 0.137 0.04 6 0.046 0.000 0.000 0.000 0.4 10 SSW 0.000 0.000 0.046 0.365 0.137 0.182 0.046 0.000 0.000 0.775 SW 0.000 0.000 0.046 0.228 0.04 6 0.046 0.000 0.000 0.000 0.3 65 WSW 0.000 0.000 0.000 0.000 0.04 6 0.046 0.000 0.000 0.000 0. 091 W 0.000 0.000 0.046 0.000 0.137 0.000 0.000 0.000 0.000 0.182 WNW 0.000 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.137 NW 0.000 0.000 0.000 0.046 0.091 0.046 0.000 0.000 0.000 0.182 NNW 0.000 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.137 SUBTOTAL 0.000 0.000 0.912 1.459 1.140 1.186 0.04 6 0.000 0.000 4.742 TOTAL HOURS OF VALID STABILITY OBSERVATIONIS 2193 TOTAL HOURS OF STABILITY CLASS C 104 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 104 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEORO:OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPZ:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200 5/01/30 MEAN WI14D SPEED - 5.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-51

2005 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, 2005 - DEC 31, 2005 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 0.456 0.866 2.006 1.505 0.000 0.000 0.000 4.834 tHUE 0.000 0.046 0.274 1.140 1.106 0.684 0.000 0.000 0.000 3.329 NE 0.000 0.000 0.593 0.775 0.182 0.000 0.000 0.000 0.000 1.550 ENE 0.000 0.091 0.365 0.137 0.046 0.091 0.000 0.000 0.000 0.730 E 0.000 0.000 0.319 0.000 0.000 0.000 0.000 0.000 0.000 0.319 ESE 0.000 0.091 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SE 0.000 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SSE 0.000 0.274 0.547 0.091 0.046 0.046 0.000 0.000 0.000 1.003 S 0.000 0.182 0.684 0.046 0.091 0.274 0.365 0.000 0.000 1.642 SSW 0.000 0.091 0.730 1.368 0.547 0.502 0.000 0.000 0.000 3.238 SW 0.000 0.091 0.365 0.775 0.182 0.228 0.000 0.000 0.000 1.642 WSW 0.000 0.046 0.502 0.274 0.046 0.046 0.000 0.000 0.000 0.912 W 0.000 0.228 0.547 0.319 0.547 0.274 0.000 0.000 0.000 1.915 WNW 0.000 0.091 0.365 0.730 0.958 0.228 0.000 0.000 0.000 2.371 NW 0.000 0.091 0.137 0.547 1.003 0.821 0.000 0.000 0.000 2.599 NNW 0.000 0.000 0.547 0.319 1.049 1.414 0.000 0.000 0.000 3.329 SUBTOTAL 0.000 1.414 6.566 7.387 7.889 6.110 0.365 0.000 0.000 29.731 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HN)URS OF STABILITY CLASS D 652 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 652 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEORO:.OGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/30 MEAN WIND SPEED - 5.37 NOTE: IOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-52

2005 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, 2005 - DEC 31, 2005 WIND WINED 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 0.228 0.638 0.730 0.547 0.137 0.000 0.000 0.000 2.280 NNE 0.000 0.046 0.410 0.274 0.091 0.000 0.000 0.000 0.000 0.821 NE 0.000 0.000 0.958 0.274 0.046 0.000 0.000 0.000 0.000 1.277 ENE 0.000 0.091 1.186 0.091 0.000 0.000 0.000 0.000 0.000 1.368 E 0.000 0.319 0.319 0.000 0.000 0.000 0.000 0.000 0.000 0.638 ESE 0.000 0.182 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.410 SE 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.228 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.365 S 0.000 0.228 0.456 0.365 0.228 0.410 0.000 0.000 0.000 1.687 SSW 0.000 0.228 0.775 0.593 0.547 0.365 0.000 0.000 0.000 2.508 SW 0.000 0.274 1.414 0.137 0.182 0.000 0.000 0.000 0.000 2.006 WSW 0.000 0.274 1.322 0.182 0.046 0.000 0.000 0.000 0.000 1.824 W 0.000 0.547 0.912 0.228 0.137 0.000 0.000 0.000 0.000 1.824 WNW 0.000 0.684 0.684 0.547 0.182 0.046 0.000 0.000 0.000 2.143 NW 0.000 0.319 0.775 0.456 0.410 0.046 0.000 0.000 0.000 2.006 NNW 0.000 0.091 0.684 1.368 0.775 0.182 0.000 0.000 0.000 3.101 SUBTOTAL 0.000 3.785 10.944 5.244 3.192 1.186 0.000 0.000 0.000 24.350 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HOURS OF STABILITY CLASS E 534 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 534 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STARILI"Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 200 5/01/30 MEAN WIND SPEED - 3.41 NOTE: ¶OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El -53

2005 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, 2005 - DEC 31, 2005 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 0.137 0.365 0.091 0.000 0.000 0.000 0.000 0.000 0.593 NNE 0.000 0.000 0.222 0.000 0.000 0.000 0.000 0.000 0.000 0.228 NE 0.000 0.182 0.319 0.000 0.000 0.000 0.000 0.000 0.000 0.502 ENE 0.000 0.046 0.228 0.091 0.000 0.000 0.000 0.000 0.000 0.365 E 0.000 0.137 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.1B2 ESE 0.000 0.137 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.091 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.228 S 0.000 0.137 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.319 SSW 0.000 0.319 0.365 0.046 0.000 0.000 0.000 0.000 0.000 0.730 SW 0.000 0.228 0.593 0.000 0.000 0.000 0.000 0.000 0.000 0.821 WSW 0.000 0.821 0.775 0.046 0.000 0.000 0.000 0.000 0.000 1.642 W 0.000 1.596 1.049 0.046 0.046 0.000 0.000 0.000 0.000 2.736 WNW 0.000 2.234 0.593 0.046 0.000 0.000 0.000 0.000 0.000 2.873 NW 0.000 1.596 0.730 0.046 0.000 0.000 0.000 0.000 0.000 2.371 NNW 0.000 0.821 0.638 0.091 0.046 0.000 0.000 0.000 0.000 1.596 SUBTOTAL 0.000 8.482 6.338 0.502 0.091 0.000 0.000 0.000 0.000 15.413 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HOURS OF STABILITY CLASS F 338 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 338 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 0 METEORO!.OGICAL FACILITY: Watts Bar Nuclear Plant STABILI'Y BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPIED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2005/01/30 MEAN WIND SPEED - 1.60 NOTE: 'TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-54

2005 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, 2005 - DEC 31, 2005 WIND WIND SPEED (MPH) 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 DIRECTION CALM 0.6-1.4 N 0.001 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.183 NNE 0.001 0.365 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.4 57 0.001 0.04 6 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.183 NE 0.001 0.182 0.000 0.000 0 .000 0.000 0.000 0.000 0.000 0.183 ENE 0.001 0.182 0 .000 0.000 0.000 0.000 0.000 0.000 0.000 0.183 E

0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.091 0 . 000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SE 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SSE 0.000 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.229 5 0.001 0.001 0.319 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.320 SSW 0.003 0.684 0.274 0.000 0 .000 0.000 0.000 0.000 0.000 0.960 SW 0.007 1.459 0.866 0.000 0.000 0.000 0.000 0.000 0.000 2.332 WSW 0.010 2.417 1.094 0.000 0.000 0.000 0.000 0.000 0.000 3.521 W

2.234 0.593 0.04 6 0.000 0.000 0.000 0.000 0.000 2.881 WNW 0.008 0.009 2.052 1.094 0.000 0.000 0.000 0.000 0.000 0.000 3.155 NW 0.003 0.730 0.274 0.04 6 0.000 0.000 0.000 0.000 0.000 1.052 NNW 11.309 4.514 0.091 0.000 0.000 0.000 0.000 0.000 15.960 SUBTOTAL 0.046 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2193 TOTAL HOURS OF STABILITY CLASS G 350 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 350 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2193 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPI:ED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/01/30 MEAN WIND SPEED - 1.29 NOTE: "OTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-55

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2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 1 TO ENCLOSURE 1 Deviations from ODCM Controls/Surveillance Requirements 6/28/2005 1/2.2.2 The weekly particulate filter obtained from the Auxiliary Building Exhaust radiation Table 2.2-2 monitor 0-RE-90-101 had signs that flow had been in both directions. This resulted Item K in a non-representative sample. No apparent cause could be determined to account for the reverse flow. The previous weeks filter and following weeks filter showed no activity.

04/17/2005 1/2.2.2 During the weekly changeout of the tritium canister on the Auxiliary Building Exhaust Table 2.2-2 it was discovered that the initial weight of the canister had not been documented.

Item K This resulted in being unable to quantify the tritium released via the Auxiliary Building Exhaust for the previous week. A grab sample was obtained, the tritium concentration was determined and used to estimate the tritium that was released.

El -56

2005 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 2 TO ENCLOSURE 1 Radiation Monitors Inoperable for Greater than 30 days None El -57

ML061220258

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