ML071230082

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Enclosure 1, Watts Bar - 2006 Annual Radioactive Effluent Release Report for the Period January Through December 2006
ML071230082
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 04/27/2007
From:
Tennessee Valley Authority
To:
Office of Nuclear Reactor Regulation
References
Download: ML071230082 (66)
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Text

Enclosure 1 Watts Bar Nuclear Plant 2006 Annual Radioactive Effluent Release Report

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION

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

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

b. Iodine-1 31, iodine-1 33, tritium, and all radionuclides in particulate form with half-lives greater than 8 days:

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

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

B. Liquid Effluents

1. The concentration of radioactivity released in liquid effluents to unrestricted areas shall be limited to 10 times the concentrations specified in Title 10 of the Code of Federal Regulations, Part 20 (Standards for Protection Against Radiation), Appendix B, Table 2, Column 2, for radionuclides other than dissolved or entrained noble gases. For dissolved or entrained noble gases, the concentration shall be limited to 2.0 E-04 piCi/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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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION

2. Effluent Concentration Limits A. Liquids The Effluent Concentration Limits (ECL) for liquids are those listed in 10 CFR 20, Appendix B, Table 2, Column 2. For dissolved and entrained gases the ECL of 2.OE-04 PCi/ml is applied. This ECL is based on the Xe-135 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.

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

3. Average Energy Watts Bar'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 (ODCM) meet the Lower Limit of Detection requirements given in ODCM Tables 2.2-1 and 2.2-2.

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

Total gamma isotopic 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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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 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 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.

Monitoring Wells WBN started conducting an investigation of tritium releases to the groundwater in 2003 due to identification of tritium in three of the four newly installed on-site monitoring wells associated with the DOE tritium production program site preparation activity in December 2002. This study involved pressure testing of the radwaste discharge line, evaporation calculations of the SFP and RWST, installation and sampling of groundwater wells, inspection of drain lines, boroscopic investigation of the SFP, and FTC leak collection system channels and drains. In addition to the Six (6) REMP on-site groundwater monitoring wells Watts Bar Nuclear Plant also has 37 non-REMP monitoring wells to support monitoring the onsite groundwater plume and for the presence or increase of radioactivity. These wells are sampled periodically for tritium and continue to exhibit a downward trend.

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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION B. Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded. Weekly grab samples from the auxiliary building and monthly grab samples from the service building are taken and analyzed to determine the quantity of noble gas activity released based on the total flows for the sample period. Also, noble gas samples are collected and evaluated following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour (sampling 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 <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for 7 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within one hour (ifdose equivalent 1-131 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of 3).

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2006 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 74 119 Each 9486 16974 Minutes
2. Total time period of releases 345 935
3. Maximum time period of release 128 13 Minutes 1 3 Minutes
4. Average time period of releases Minutes
5. Minimum time period for release 17,368 23,503 CFS
6. Average dilution stream flow during release periods B. Gaseous (Batches only - containment purges, and waste gas decay tanks)
1. Number of releases 45 39 Each 91667 143754 25786 Minutes
2. Total time period of releases 28840 2037 3686 Minutes
3. Maximum time period for release 5 Minutes 5
4. Average time period for releases Minutes
5. Minimum time period for release
6. Abnormal Releases Value Units 1st Half 2nd Half A. Liquid Number of Releases 3 1 Total Activity Released 1.01 E-02 4.20E-05 Ci B. Gaseous Number of Releases 0 3 Total Activity Released N/A 3.62E-02 Ci E1-5

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Gaseous Abnormal Releases Release Point: Auxiliary Building Exhaust Start Date/Time of Release: 07/12/2006 23:00 On 07/12/2006 at approximately 2300 increased countrates were observed on both the WGDT radiation monitor 0-RM-90-118 and the Auxiliary Building radiation monitor 0-RM-90-101. Samples of the Auxiliary Building Exhaust were not obtained during the event. In order to quantify the release, sample results obtained from WGDT H following the event were used to quantify the release. The radwaste pressure logs were reviewed and WGDT H had decreased by one psig following pumping down the waste gas header to WGDT H. The nuclides and associated curies released from WGDT H were determined by generating a release permit for WGDT H of one psig. The Auxiliary Building trend was obtained from Dataware for the period of the release. From the observed spike on the noble gas channel the duration of the release was determined to be 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />. The diluted concentration for each nuclide in WGDT H was determined using 2.87E7 CF as the volume released from the Auxiliary Building during the 3 hour3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> period. An Auxiliary Building Release permit was then generated using the event time of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, volume released 2.87E7 CF, and the diluted nuclide concentrations to determine the curies and impact to dose rates. The resulting curies released were 3.54E-02 and the dose rates were as follows: total body dose rate 3.47E-02 mrem/yr, skin dose rate 8.33E-02 mrem/yr, and total body dose 5.34E-06 mrem. Engineering determined that there had been leakage past valve 0-ISV-077-0748H due to either valve 0-ISV-077-0748H not being fully closed or failure of the valve diaphragm.

Release Point: Containment Dome Start Date/Time of Release: 10/26/2006 1400 During the Unit 1 Steam Generator Replacement Outage air movers were used to ventilate and remove smoke form annulus during welding activities. On 10/26/2006 the air movers orientation was questioned and it was discovered that they had been positioned such that the air was being exhausted from the annulus versus supplying the annulus. The following is the evaluation of the use of air movers drawing air from Unit 1 annulus versus supplying air to the Unit 1 annulus during the Unit 1 Steam Generator Replacement Outage.

" The model of air movers used was Jectair 6-HP, capable of moving 4870 cfm.

" Two air movers were placed into service on 10/26/2006 at 1400.

" The air movers were removed from service on 10/26/2006 at 2000.

" Rad Protection annulus air samples taken on 10/27/2006 contained:

1-131 6.9E-12 pCi/cc Co-60 4.5E-12 pCi/cc

  • Based on the above nuclide concentrations and volume the curies released were:

1-131 4.55E-07 Co-60 7.03E-07 Total 1.16E-06

  • The impact to 10CFR20 dose rates were as follows:

Total body dose rate 0.0 Limit is 500 mrem/year Organ dose rate (Thyroid) 1.52E-02 mrem/year Limit is 1500 mrem/year Skin dose rate 0.0 mrem/year Limit is 3000 mrem/year

  • The impact to 10CFR50 doses were as follows:

Gamma air dose 0.0 mrad Limit is 5 mrad/quarter Beta air dose 0.0 mrad Limit is 10 mrad/quarter Organ dose 1.49E-05 mrem Limit is 7.5 mrem/quarter E1-6

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Release Point: Containment Start Date/Time of Release: 11/22/2006 0425 During the Unit 1 Steam Generator Replacement Outage, Containment had to be leak tested by pressurizing containment to 15 psig. The contents of containment were then exhausted to the environment without being monitored by a radiation monitor. The following is the evaluation for releasing the contents of containment during the Containment Leak Rate Test during the Unit 1 Steam Generator Replacement Outage.

" Rad Protection obtained containment air samples prior to CNMT reaching 15 psig on 11/22/2006 contained the following nuclides in pCi/cc:

Charcoal - No nuclides identified Filter - Co 1.33E-1 1 Co 2.37E-12 Mn 1.27E-12 Nb 1.61 E-2 Zr - 95 9.52E13 Tritium - 2.38E-08

" Based on the above nuclide concentrations and volume the curies released were:

Co 4.51 E-07 Co 8.05E-08 Mn 4.31 E-08 Nb 5.46E-08 Zr 3.23E-08 Tritium - 2.38E-08 Total 8.09E-04

  • The impact to 1 OCFR20 dose rates were as follows:

Total body dose rate 0.0 Limit is 500 mrem/year Organ dose rate (Lung) 1.38E-02 mrem/year Limit is 1500 mrem/year Skin dose rate 0.0 mrem/year Limit is 3000 mrem/year

  • The impact to 1 0CFR50 doses were as follows:

Gamma air dose 0.0 mrad Limit is 5 mrad/quarter Beta air dose 0.0 mrad Limit is 10 mrad/quarter Organ dose 4.02E-06 mrem Limit is 7.5 mrem/quarter E1-7

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Liquid Abnormal Releases Release Point: Auxiliary Boiler - A Start Date/Time of Release: 02/2312006 Tritium was found in the Auxiliary Boiler on 02/23/06. The source of the tritium was CST A. Plant procedures only allowed the feed source to the Auxilairy Boilers to be from CST A. CST A contained tritium as a result of automatic dump back from the Hotwell. The plant procedures were revised to feed the Auxiliary Boilers from CST B which did not contain tritium nor received water form Unit 1 hotwell. The following assumptions were used in the evaluation; the maxmimum steam capacity for one auxiliary boiler is equal to 40,000 lb/hr, release duration of 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and the CST A tritium concentration o 4.31 e-06 pCi/ml. The resulting curies released were 1.57E-04. The organ dose was 4.51 E-07 mrem and the organ dose rate was 8.20E-04 mrem/yr.

Release Point: CST-A Overflow Start Date/Time of Release: following the reactor trip on 07/31/2006 12:55 The following assumptions were used to determine the curies and dose as a result of the spill that occurred on 7/31/06 at 12:55 from CST A following the reactor trip. The assumptions are as follows:

the volume that overflowed CST A was estimated to be 5,000 gallons, the release rate was calculated to be 200 gpm based on the volume released and start and end times for the overflow, and the release was to the YHP via the storm drain system. The only isotope identified in the CST A sample taken prior to the overflow was tritium with a concentration of 2.22E-06 pCi/ml. The resulting tritium curies released were 4.20E-05 and the resulting total body dose was 1.39E-09 mrem.The overflowed water entered the storm drain that carries the Ground Water StationSump (GWSS) discharge water to the river.

Release Point: Draining of CST-A to YHP during Turbine Outage Start Date/Time of Release: 06/01/2006 03:29 The CST A was drained following the reactor trip on 05/30/2006 to the YHP via the same storm drain that is used for releasing the ground water station sump (GWSS). The following was considered in determining the curies and dose as a result of draining the entire contents of CST A, the start date and time of the drain, the duration of the drain, the nuclides present in CST A, and the GWSS release path. The volume at the start of the drain on 06/01/2006 at 03:29 was 3.3883 E5 gallons, the release rate was determined to be 200 gpm based on an end date of 06/01/2006 at 21:54. The only isotope identified in the CST A sample was tritium with a concentration of 7.71 E-06 pCi/ml. The total curies released were 9.89E-03 and the resulting total body dose was 4.53E-07 mrem.

Release Point: CST-A overflow following the reactor trip on 05/30/2006.

Start Date/Time of Release: 05/30/2006 18:03 Several assumptions were made in determining the curies and dose as a result of the spill that occurred on 5/30/06 at 18:03 from CST A following the reactor trip. The assumptions are as follows:

the volume that overflowed CST A was estimated to be 5,000 gallons, the release rate was assumed to be 100 gpm, and it is highly likely that all the spilled water was released to the YHP via the storm drain system. The isotopes identified in the CST A sample were; H3 4.54E-06, Xe-1 33 1.60E-07, and Xe-1 35 9.98E-08 all pCi/ml. The resulting curies released were; H3 8.59E-05, Xe-1 33 3.03E-06, and Xe-1 35 1.89E-06. The total curies released were 9.08E-05 and the resulting total body dose was 3.94E-09 mrem.

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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-A Liquid Effluents - Summation of All Releases During the period Starting: 1-Jan-2006 Ending: 30-Jun-2006 Est.

Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release (Not Including Tritium, Ci 6.05E-03 5.04E-02 25%

Gases, Alpha)

2. Average Diluted Concentration During PCi/ml 2.56E-10 3.97E-09 Period
3. Percent Of Applicable Limit  % *
1. Total Release Ci 1.79E+02 1.03E+03 18%
2. Average Diluted Concentration During pCi/ml 7.57E-06 8.12E-05 Period
3. Percent Of Applicable Limit  %

C. Dissolved And Entrained Gases

1. Total Release Ci 1.14E-03 3.75E-01 39%
2. Average Diluted Concentration During pCi/ml 4.82E-1 1 2.96E-08 Period
3. Percent Of Applicable Limit  % 2.41 E-05 1.48E-02 D. Gross Alpha Radioactivity
1. Total Release Curies O.OOOE+00** O.OOOE+00 N/A***

E. Total Waste Volume Released Liters 5.291E+08 4.857E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 2.313E+10 1.22E+10 12%

G. Radwaste Volume Released Liters 1.12E+06 2.03E+06 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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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 1-B Liquid Effluents - Summation of All Releases During the period Starting: 1-Jul-2006 Ending: 31-Dec-2006 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release (Not Including Ci 1.54E-01 4.76E-02 25%

Tritium, Gases, Alpha)

2. Average Diluted Concentration pCi/ml 1.19E-08 5.34E-08 During Period
3. Percent Of Applicable Limit  %*
1. Total Release Ci 5.34E+02 7.48E+01 18%
2. Average Diluted Concentration pCi/ml 4.12E-05 8.39E-05 During Period
3. Percent Of Applicable Limit  %

C. Dissolved And Entrained Gases

1. Total Release Ci 3.97E+00 6.90E-02 39%
2. Average Diluted Concentration pCi/ml 3.06E-07 7.74E-08 During Period
3. Percent Of Applicable Limit  % 1.53E-01 3.87E-02 D. Gross Alpha Radioactivity
1. Total Release Ci O.OOE+00** O.OOE+00 N/A***

E. Total Waste Volume Released Liters 1.53E+08 8.13E+07 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 1.28E+10 8.1OE+08 12%

G. Radwaste Volume Released Liters 3.40E+06 1.66E+06 12%

Applicable limits are expressed in terms of dose. See Table 7B 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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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A Curies Released in Liquid Effluents During the period Starting: 1-Jan-2006 Ending: 31-Mar-2006 CONTINUOUS BATCH TOTAL H-3 9.80E-01 1.78E+02 1.79E+02 FISSION & ACTIVATION PRODUCTS CO-57 0.OOE+00 9.46E-07 9.46E-07 CO-58 0.OOE+00 4.37E-04 4.37E-04 CO-60 0.OOE+00 2.88E-04 2.88E-04 CR-51 9.82E-05 0.OOE+00 9.82E-05 CS-1 34 0.OOE+00 1.70E-04 1.70E-04 CS-1 37 0.OOE+00 1.89E-04 1.89E-04 FE-55 0.00E+00 3.32E-08 3.32E-08 1-131 1.83E-04 2.52E-05 2.08E-04 1-132 6.93E-05 0.OOE+00 6.93E-05 1-133 2.74E-03 2.76E-05 2.77E-03 1-135 1.11 E-04 0.OOE+00 1.11 E-04 MN-54 0.OOE+00 8.29E-06 8.29E-06 SB-1 25 0.OOE+00 1.70E-03 1.70E-03 SR-89 0.OOE+00 0.OOE+00 0.OOE+00 SR-90 0.OOE+00 0.OOE+00 0.OOE+00 TOTALS 3.20E-03 2.85E-03 6.05E-03 DISSOLVED AND ENTRAINED GASES XE-1 33 0.OOE+00 9.35E-04 9.35E-04 XE-135 9.25E-06 6.69E-05 7.62E-05 XE-1 35M 1.33E-04 0.OOE+00 1.33E-04 TOTALS 1.42E-04 1.OOE-03 1.14E-03

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

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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B Curies Released in Liquid Effluents During the period Starting: 1-Apr-2006 Ending: 30-Jun-2006 CONTINUOUS BATCH TOTAL H-3 1.58E+00 1.03E+03 1.03E+03 FISSION & ACTIVATION PRODUCTS AG-11iM O.OOE+00 1.60E-05 1.60E-05 CO-57 0.OOE+00 3.49E-05 3.49E-05 C0-58 6.50E-05 3.56E-03 3.63E-03 CO-60 0.OOE+00 1.21 E-03 1.21 E-03 CR-51 0.OOE+00 5.70E-04 5.70E-04 CS-1 34 2.52E-04 8.29E-05 3.35E-04 CS-1 36 5.OQE-04 0.00E+00 5.OOE-04 CS-1 37 2.34 E-04 1.11 E-04 3.45 E-04 CS-1 38 3.58E-04 6.15E-05 4.20E-04 FE-55 3.66E-08 1.66E-07 2.03E-07 FE-59 0.OOE+00 4.40E-06 4.40E-06 1-131 1.54E-03 1.94E-04 1.73E-03 1-132 3.80E-03 2.13E-05 3.82E-03 1-133 1.05E-02 1.08E-04 1.06E-02 1-134 1.26E-03 O.OOE+00 1.26E-03 1-135 1.81 E-02 1.24E-05 1.81 E-02 MN-54 0.OOE+00 7.78E-05 7.78E-05 MO-99 0.OOE+00 5.01 E-06 5.01 E-06 NB-95 0.OOE+00 5.50E-05 5.50E-05 RB-88 0.OOE+00 3.36E-04 3.36E-04 RU-1 03 0.OOE+00 2.47E-06 2.47E-06 SB-124 0.OOE+00 5.16E-05 5.16E-05 SB-1 25 0.00E+00 6.16E-03 6.16E-03 SB-126 0.OOE+00 1.06E-03 1.06E-03 SN-1 17M 0.OOE+00 1.59E-05 1.59E-05 SR-89 0.OOE+00 0.OOE+00 O.OOE+00 SR-90 0.OOE+00 0.OOE+00 0.OOE+00 TC-99M 0.OOE+00 5.01 E-06 5.01 E-06 TE-132 0.OOE+00 2.92E-05 2.92E-05 ZR-95 0.OOE+00 1.59E-05 1.59E-05 TOTALS 3.66E-02 1.38E-02 5.04E-02

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

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2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B (Continued)

Curies Released in Liquid Effluents During the period Starting: 1-Apr-2006 Ending: 30-Jun-2006 DISSOLVED AND ENTRAINED GASES CONTINUOUS BATCH TOTAL KR-85 9.40E-03 2.04E-02 2.98E-02 KR-85M 0.OOE+00 4.02E-04 4.02E-04 KR-88 0.OOE+00 1.33E-04 1.33E-04 XE-1 31M 0.00E+00 1.23E-02 1.23E-02 XE-1 33 4.13E-04 3.07E-01 3.07E-01 XE-1 33M 0.00E+00 1.88E-03 1.88E-03 XE-1 35 1.24E-04 2.19E-02 2.20E-02 XE-1 35M 1.06E-03 O.OOE+00 1.06E-03 TOTALS 1.1OE-02 3.64E-01 3.75E-01

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

El-13

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-C Curies Released in Liquid Effluents During the period Starting: 1-Jul-2006 Ending: 30-Sep-2006 CONTINUOUS BATCH TOTAL H-3 4.82E-01 5.34E+02 5.34E+02 FISSION & ACTIVATION PRODUCTS BA-1 39 0.00E+00 1.44E-05 1.44E-05 CE-144 7.18E-04 0.OOE+00 7.18E-04 CO-57 0.OOE+00 9.12E-05 9.12E-05 CO-58 8.67E-05 4.42E-02 4.43E-02 CO-60 0.OOE+00 1.86E-03 1.86E-03 CR-51 0.OOE+00 3.61 E-04 3.61 E-04 CS-1 34 6.66E-04 1.65E-04 8.31 E-04 CS-1 36 5.22E-05 O.OOE+00 5.22E-05 CS-1 37 4.34E-04 1.53E-04 5.87E-04 CS-1 38 3.30E-03 1.24E-04 3.42E-03 FE-55 0.OOE+00 2.08E-06 2.08E-06 FE-59 0.OOE+00 5.49E-06 5.49E-06 1-131 2.82E-03 2.05E-04 3.03E-03 1-132 5.25E-03 1.52E-02 2.05E-02 1-133 1.55E-02 0.OOE+00 1.55E-02 1-134 5.26E-03 0.OOE+00 5.26E-03 1-135 1.65E-02 0.OOE+00 1.65E-02 LA-1 40 0.OOE+00 4.66E-05 4.66E-05 MN-54 0.OOE+00 4.04E-04 4.04E-04 NB-95 0.OOE+00 1.37E-04 1.37E-04 NP-239 O.OOE+00 2.51 E-05 2.51 E-05 RB-88 3.83E-03 5.94E-03 9.77E-03 RU-1 03 0.OOE+00 8.43E-06 8.43E-06 SB-124 0.OOE+00 3.88E-04 3.88E-04 SB-125 0.OOE+00 7.48E-03 7.48E-03 SN-117M 0.OOE+00 8.57E-05 8.57E-05 TE-129M 0.OOE+00 1.64E-03 1.64E-03 TE-131 M 0.OOE+00 1.43E-04 1.43E-04 TE-132 0.OOE+00 1.23E-02 1.23E-02 ZR-95 0.OOE+00 6.69E-05 6.69E-05 SR-89 0.OOE+00 8.39E-03 8.39E-03 SR-90 0.OOE+00 3.11E-04 3.11 E-04 TOTALS 5.44E-02 9.97E-02 1.54E-01

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

E1-14

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-C (Continued)

Curies Released in Liquid Effluents During the period Starting: 1-Jul-2006 Ending: 30-Sep-2006 DISSOLVED AND ENTRAINED GASES CONTINUOUS BATCH TOTAL AR-41 0.OOE+00 6.70E-04 6.70E-04 KR-85 2.21 E-02 1.76E-02 3.97E-02 KR-85M 3.1 OE-05 4.30E-03 4.33E-03 KR-87 0.00E+00 1.55E-04 1.55E-04 KR-88 0.OOE+00 3.26E-03 3.26E-03 XE-1 31M 0.OOE+00 4.28E-02 4.28E-02 XE-1 33 4.71 E-04 3.72E+00 3.72E+00 XE-1 33M 0.OOE+00 4.63E-02 4.63E-02 XE-1 35 5.26E-04 1.20E-01 1.21 E-01 XE-1 35M 1.63E-03 0.00E+00 1.63E-03 TOTALS 2.47E-02 3.95E+00 3.97E+00

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

E1-15

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-D Curies Released in Liquid Effluents During the period Starting: 1-Oct-2006 Ending: 31-Dec-2006 CONTINUOUS BATCH TOTAL H-3 9.13E-02 7.47E+01 7.48E+01 FISSION & ACTIVATION PRODUCTS BA-1 39 0.00E+00 3.17E-05 3.17E-05 CO-57 0.OOE+00 3.98E-05 3.98E-05 CO-58 0.OOE+00 7.92E-03 7.92E-03 CO-60 0.OOE+00 9.06E-04 9.06E-04 CR-51 0.00E+00 3.99E-04 3.99E-04 CS-1 34 0.00E+00 2.27E-03 2.27E-03 CS-1 37 0.00E+00 1.68E-03 1.68E-03 FE-55 0.00E+00 1.39E-07 1.39E-07 FE-59 0.00E+00 5.66E-06 5.66E-06 1-131 0.00E+00 5.16E-05 5.16E-05 1-132 O.00E+00 5.26E-04 5.26E-04 MN-54 0.00E+00 1.89E-04 1.89E-04 NB-95 0.OOE+00 1.89E-04 1.89E-04 RU-103 0.OOE+00 5.71 E-06 5.71 E-06 SB-122 0.OOE+00 4.21 E-06 4.21 E-06 SB-124 0.OOE+00 8.09E-05 8.09E-05 SB-125 0.OOE+00 9.84E-03 9.84E-03 SN-1 17M 0.OOE+00 9.43E-06 9.43E-06 SR-89 0.OOE+00 6.81 E-06 6.81 E-06 SR-90 0.OOE+00 3.09E-07 3.09E-07 TE-129 0.00E+00 2.01 E-03 2.01 E-03 TE-129M 0.00E+00 3.25E-03 3.25E-03 TE-132 0.00E+00 5.40E-04 5.40E-04 ZN-65 0.OOE+00 4.05E-06 4.05E-06 ZR-95 0.00E+00 3.03E-05 3.03E-05 TOTALS 0.OOE+00 4.76E-02 4.76E-02 DISSOLVED AND ENTRAINED GASES KR-85 0.OOE+00 3.08E-03 3.08E-03 KR-85M 0.OOE+00 4.03E-06 4.03E-06 XE-1 31M 0.OOE+00 4.47E-03 4.47E-03 XE-133 0.OOE+00 6.15E-02 6.15E-02 XE-1 35 0.OOE+00 1.06E-05 1.06E-05 TOTALS 0.00E+00 6.90E-02 6.90E-02

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

El-16

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-A Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jan-2006 Ending: 30-Jun-2006 Est. Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release Ci 7.69E+01 4.78E+01 22
2. Average Release Rate For Period pCi/sec 9.89E+00 6.08E+00
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci 6.23E-06 5.52E-05 N/A***
2. Average Release Rate For Period pCi/sec 8.01 E-07 7.02E-06
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci 3.26E-08 8.75E-06 N/A***
2. Average Release Rate For Period pCi/sec 4.19E-09 1.11E-06
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci O.OOOE+00 0.OOOE+00 D. Tritium
1. Total Release Ci 2.08E+00 3.78E+00 11
2. Average Release Rate For Period pCi/sec 2.67E-01 4.81 E-01
3. Percent Of Applicable Limit
  • Applicable 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 reporting period.

E1-17

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 3-B Gaseous Effluents - Summation of All Releases During the period Starting: 1-Jul-2006 Ending: 31-Dec-2006 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release Ci 1.92E+02 5.55E+00 22
2. Average Release Rate For Period pCi/sec 2.42E+01 6.98E-01
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci 1.23E-03 1.22E-03 ***N/A
2. Average Release Rate For Period pCi/sec 1.55E-04 1.54E-04
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci 1.1OE-04 1.14E-04 ***N/A
2. Average Release Rate For Period pCi/sec 1.39E-05 1.44E-05
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOOE+00 D. Tritium
1. Total Release Ci 9.64E+00 6.62E+00 11
2. Average Release Rate For Period pCi/sec 1.21 E+00 8.32E-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.

El-18

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-A Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jan-2006 Ending: 31-Mar-2006 CONTINUOUS BATCH TOTAL FISSION GASES KR-87 1.97E-03 0.00E+00 1.97E-03 XE-1 38 3.87E-03 0.00E+00 3.87E-03 XE-1 35M 1.26E-02 0.OOE+00 1.26E-02 KR-88 6.49E-04 6.23E-05 7.11 E-04 KR-85M 1.43E-03 7.19E-03 8.62E-03 XE-131M 0.00E+00 1.17E-02 1.17E-02 XE-1 33M O.OOE+00 1.90E-01 1.90E-01 KR-85 0.OOE+00 1.14E+00 1.14E+00 XE-1 35 7.50E-01 1.65E+00 2.40E+00 AR-41 0.00E+00 1.07E+01 1.07E+01 XE-133 9.13E+00 5.33E+01 6.24E+01 TOTALS 9.90E+00 6.70E+01 7.69E+01 IODINES 1-132 1.35E-07 0.00E+00 1.35E-07 1-135 2.81 E-07 0.00E+00 2.81 E-07 1-131 6.22E-06 0.00E+00 6.22E-06 1-133 1.27E-05 0.OOE+00 1.27E-05 TOTALS 1.93E-05 0.00E+00 1.93E-05 PARTICULATES TC-99M 2.77E-1 0 0.OOE+00 2.77E-1 0 SR-89 3.26E-08 0.00E+00 3.26E-08 F-1 8 1.04E-07 0.OOE+00 1.04E-07 NB-97 1.76E-07 0.00E+00 1.76E-07 BR-82 1.41 E-06 0.OOE+00 1.41 E-06 RB-88 7.35E-06 0.00E+00 7.35E-06 BA-1 39 1.11E-05 0.00E+00 1.11E-05 RB-89 1.05E-04 0.00E+00 1.05E-04 CS-1 38 3.22E-04 0.00E+00 3.22E-04 TOTALS 4.47E-04 0.OOE+00 4.47E-04 H-3 2.08E+00 0.00E+00 2.08E+00

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

El-19

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-B Curies released in Gaseous Ground Level Releases During the period Starting: 1-Apr-2006 Ending: 30-Jun-2006 CONTINUOUS BATCH TOTAL FISSION GASES KR-88 3.64E-03 0.OOE+00 3.64E-03 KR-87 6.15E-03 0.OOE+00 6.15E-03 XE-1 38 2.64E-02 0.OOE+00 2.64E-02 XE-1 35M 3.82E-02 0.00E+00 3.82E-02 KR-85M 3.33E-03 1.76E-02 2.09E-02 XE-1 33M 0.OOE+00 2.34E-02 2.34E-02 XE-1 31M 0.00E+00 1.13E-01 1.13E-01 XE-1 35 5.85E-01 6.25E-01 1.21 E+00 KR-85 0.00E+00 1.73E+00 1.73E+00 AR-41 9.88E-04 3.17E+00 3.17E+00 XE-1 33 8.51 E+00 3.30E+01 4.15E+01 TOTALS 9.17E+00 3.87E+01 4.79E+01 IODINES 1-135 5.03E-07 0.OOE+00 5.03E-07 1-133 9.42E-06 0.OOE+00 9.42E-06 1-132 1.55E-05 0.OOE+00 1.55E-05 1-131 5.52E-05 0.OOE+00 5.52E-05 TOTALS 8.06E-05 0.OOE+00 8.06E-05 PARTICULATES SR-89 8.97E-09 0.OOE+00 8.97E-09 F-18 1.93E-07 0.OOE+00 1.93E-07 NB-97 1.07E-06 0.OOE+00 1.07E-06 BR-82 2.21 E-06 0.OOE+00 2.21 E-06 CO-58 8.74E-06 0.OOE+00 8.74E-06 RB-88 1.47E-05 0.OOE+00 1.47E-05 BA-1 39 2.54E-05 0.OOE+00 2.54E-05 RB-89 2.40E-04 0.00E+00 2.40E-04 CS-138 6.64E-04 0.OOE+00 6.64E-04 TOTALS 9.56E-04 0.OOE+00 9.56E-04 H-3 3.78E+00 0.OOE+00 3.78E+00

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

E1-20

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-C Curies released in Gaseous Ground Level Releases During the period Starting: 1-Jul-2006 Ending: 30-Sep-2006 CONTINUOUS BATCH TOTAL FISSION GASES XE-1 37 1.42E-02 0.00E+00 1.42E-02 XE-1 38 5.21 E-02 0.00E+00 5.21 E-02 XE-1 35M 8.58E-02 0.00E+00 8.58E-02 KR-87 2.11 E-02 8.20E-05 2.12E-02 KR-88 2.40E-02 1.50E-02 3.90E-02 XE-1 31M 1.14E-04 9.79E-01 9.79E-01 KR-85M 1.06E-02 2.80E-01 2.91 E-01 KR-85 1.17E-03 9.78E-01 9.79E-01 XE-1 33M 7.52E-04 2.52E+00 2.52E+00 AR-41 2.26E-02 6.82E+00 6.84E+00 XE-135 3.24E+00 8.53E+00 1.18E+01 XE-1 33 2.10E+01 1.78E+02 1.99E+02 TOTALS 2.45E+01 1.98E+02 2.23E+02 IODINES 1-134 6.31 E-07 0.00E+00 6.31 E-07 1-135 1.23E-05 0.OOE+00 1.23E-05 1-133 2.27E-04 0.OOE+00 2.27E-04 1-131 1.23E-03 0.00E+00 1.23E-03 1-132 1.53E-03 0.00E+00 1.53E-03 TOTALS 3.OOE-03 0.00E+00 3.OOE-03 PARTICULATES CS-1 37 3.03E-1 0 0.OOE+00 3.03E-1 0 LA-140 5.09E-1 0 0.OOE+00 5.09E-1 0 SR-89 3.83E-08 0.OOE+00 3.83E-08 F-18 1.09E-07 0.00E+00 1.09E-07 RU-1 03 1.40E-06 0.00E+00 1.40E-06 NB-95 3.05E-06 0.00E+00 3.05E-06 NB-97 4.63E-06 0.00E+00 4.63E-06 BR-82 1.36E-05 0.00E+00 1.36E-05 CR-51 3.69E-05 0.00E+00 3.69E-05 RB-88 5.78E-05 0.00E+00 5.78E-05 CO-58 6.90E-05 0.00E+00 6.90E-05 BA-1 39 1.OOE-04 0.OOE+00 1.00E-04 RB-89 8.08E-04 0.OOE+00 8.08E-04 CS-1 38 2.42E-03 0.00E+00 2.42E-03 TOTALS 3.51 E-03 0.00E+00 3.51 E-03 H-3 9.64E+00 0.OOE+00 9.64E+00 El-21

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 4-D Curies released in Gaseous Ground Level Releases During the period Starting: 1-Oct-2006 Ending: 31-Dec-2006 CONTINUOUS BATCH TOTAL FISSION GASES XE-1 31M 0.00E+00 4.67E-03 4.67E-03 XE-1 35 0.00E+00 1.29E-01 1.29E-01 KR-85 0.00E+00 2.03E-01 2.03E-01 XE-1 33 0.OOE+00 3.45E+00 3.45E+00 AR-41 0.OOE+00 1.76E+00 1.76E+00 TOTALS 0.00E+00 5.55E+00 5.55E+00 IODINES 1-133 1.76E-05 O.OOE+00 1.76E-05 1-132 6.02E-05 O.OOE+00 6.02E-05 1-131 1.22E-03 O.OOE+00 1.22E-03 TOTALS 1.30E-03 O.OOE+00 1.30E-03 PARTICULATES RU-1 03 4.17E-06 0.OOE+00 4.17E-06 CR-51 5.28E-06 0.OOE+00 5.28E-06 ZR-95 0.OOE+00 3.23E-08 3.23E-08 MN-54 0.OOE+00 4.31 E-08 4.31 E-08 NB-95 5.20E-07 5.46E-08 5.75E-07 CO-60 0.OOE+00 8.05E-08 8.05E-08 CO-58 8.39E-05 2.01 E-05 1.04E-04 TOTALS 9.38E-05 2.03E-05 1.14E-04 H-3 6.62E+00 8.08E-04 6.62E+00

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

El-22

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-A SOLID WASTE (RADIOACTIVE SHIPMENTS)

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

1. Type of Waste Unit Period Error %
a. Spent resins, filter sludges, evaporator m3 3.41 N/A bottoms, etc. Ci 211 +/-25%
b. Dry Active Waste, Compressible Waste m3 1270 N/A Contaminated Equipment, etc. Ci 7.10 +/-25%
c. Irradiated Components, Control m3 None N/A Rods, etc. Ci None N/A E1-23

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT

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

Percent Ci

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

(nuclides determined by measurement)

H-3 0.010 2.19E-2 C-14 0.079 1.66E-1 Mn-54 1.992 4.20E+0 Fe-55 7.474 1.57E+1 Co-57 0.315 6.64E-1 Co-58 2.929 6.17E+0 Co-60 10.112 2.13E+1 Ni-59 0.304 6.40E-1 Ni-63 42.590 8.98E+1 Sr-89 0.015 3.21 E-2 Sr-90 0.041 8.67E-2 Tc-99 0.002 4.53E-3 Sb-125 0.384 8.09E-1 Cs-134 16.557 3.49E+1 Cs-137 17.074 3.60E+1 Ce-144 0.116 2.44E-1 Pu-238 0.000 7.85E-4 Pu-239 0.000 5.05E-4 Pu-240 0.000 5.05E-4 Pu-241 0.005 1.14E-2 Am-241 0.000 1.18E-4 Cm-242 0.001 1.89E-3 Cm-243 0.000 2.30E-4 Cm-244 0.000 2.29E-4 El-24

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-A SOLID WASTE (RADIOACTIVE SHIPMENTS)

b. Dry active waste, compressible waste, contaminated equipment, etc. (nuclides determined by estimate) Percent Ci H-3 0.004 3.08E-4 C-14 0.000 2.22E-5 Cr-51 3.789 2.69E-1 Mn-54 4.428 3.14E-1 Fe-55 6.595 4.68E-1 Fe-59 0.927 6.58E-2 Co-57 0.429 3.04E-2 Co-58 56.961 4.04E+0 Co-60 19.660 1.40E+0 Ni-59 0.008 5.52E-4 Ni-63 1.011 7.18E-2 Zn-65 0.004 2.78E-4 Sr-89 0.002 1.10E-4 Sr-90 0.000 2.32E-5 Zr-95 1.681 1.19E-1 Nb-95 1.749 1.24E-1 Ru-103 0.805 5.71E-2 Ru-106 0.024 1.67E-3 Ag-110m 0.006 3.91E-4 Sn-113 0.008 5.89E-4 Sn-117m 0.003 2.14E-4 Sb-124 0.005 3.51 E-4 Sb-125 0.068 4.83E-3 1-131 0.043 3.08E-3 Cs-1 34 0.021 1.49E-3 Cs-137 0.118 8.41E-3 Ba-140 0.010 7.01E-4 La-140 0.001 5.02E-5 Ce-1 41 0.337 2.40E-2 Ce-144 1.297 9.21E-2 Pu-238 0.000 7.57E-6 Pu-239 0.000 4.61 E-6 Pu-240 0.000 4.61 E-6 Pu-241 0.004 2.93E-4 Am-241 0.000 5.03E-6 Cu-242 0.002 1.27E-4 Cm-242 0.000 1.54E-5 Cm-244 0.000 1.54E-5
c. Irradiated Components None N/A N/A E1-25

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-B SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 1 Motor Freight Barnwell Waste Mgmt Facility 28 Motor Freight Duratek DAW Processing 4 Motor Freight Duratek Green is Clean
4. Irradiated Fuel Shipments (Disposition)

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

5. Solidification of Waste Was solidification performed? No If yes, solidification media: N/A 12 Month Est. (Ci)
1. Type of 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 m3 None N/A Rods, etc. Ci None N/A E1-26

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Introduction Potential doses 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 ODCM specifies limits for the release of radioactive effluents, as well as limits for doses to the general public from the release of radioactive effluents. These limits are set well below the Technical Specification limits which govern the concentrations of radioactivity and doses permissible in unrestricted areas. This ensures that radioactive effluent releases are As Low As Reasonably Achievable.

Dose Calculations Estimated doses to the public are determined using computer models (the Gaseous Effluent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code, QWATA). These models are based on guidance provided by the NRC (in Regulatory Guides 1.109, 1.111 and 1.113) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values. Many of these factors are obtained from NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 6A, 6B, 7A and 7B.

Doses From Airborne Effluents For airborne effluents, the public can be exposed to radiation from several sources: direct radiation from the radioactivity in the air, direct radiation from radioactivity deposited on the ground, inhalation of airborne radioactivity, ingestion of vegetation which contains radioactivity deposited from the atmosphere, and ingestion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently eaten by milk and beef animals.

Airborne 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 E1-25 through E1-52.

E1-27

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact Meteorological 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.

External Exposure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the 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.

OrQan Dose Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. 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).

E1-28

2006 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 given by the NRC (in Regulatory Guide 1.109) for maximum ingestion rates, exposure times, etc.

Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the 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 code makes the assumption that this mixing condition holds true until the water is completely mixed at Tennessee River Mile 510.0.

Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam (Chickamauga Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (Dayton, TN). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from 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 <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just below the outfall from 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.

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

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

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

E1-29

2006 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 15.5 mR/quarter at onsite (at or near the site boundary) stations and 14.75 mR/quarter at offsite stations or 0.75 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoperation and construction phases of the WBN plant site where the average radiation levels onsite were generally 2-6 mR/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in 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 <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br />). Results from onsite TLD measurements indicated that the highest onsite TLD reading outside the Radiological Control Area was 90 mrem. Using this value, subtracting an annual background value of approximately 62 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 6.39 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 organ dose (for any organ other than the thyroid) from airborne effluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid effluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne effluents for each quarter, the total body dose from liquid effluents for each quarter, the thyroid dose from liquid effluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the environmental monitoring program. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance. Cumulative annual total doses are presented in Table 8.

E1-30

2006 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 3.81 E-02 mrad 5 mrad < 1% E/1280 meters Beta Air 3.70E-02 mrad 10 mrad < 1% E/1280 meters Submersion Total Body 1.48E-02 mrem N/A N/A ENE/2414 meters Skin 2.55E-02 mrem N/A N/A ENE/2414 meters Organ Doses Child/Thyroid 5.72E-03 mrem 7.5 mrem 5.7% NE/3829 meters Child/Total Body 5.69E-03 mrem 7.5 mrem < 1% NE/3829 meters Population Doses Total Body Dose 1.61 E-02 man-rem Maximum Organ Dose (organ) 1.63E-02 man-rem (thyroid)

Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.12E-02 mrad 5 mrad < 1% E/1280 meters Beta Air 3.08E-02mrad 10 mrad < 1% E/1280 meters Submersion Total Body 6.79E-03 mrem N/A N/A ENE/2414 meters Skin 1.31 E-02 mrem N/A N/A ENE/2414 meters Organ Doses I II Child/Thyroid 5.55E-03 mrem 7.5 mrem < 1% NE/3829 meters Child/Total Body 5.26E-03 mrem 7.5 mrem < 1% NE/3829 meters Population Doses Total Body Dose 2.04E-02 man-rem Maximum Organ Dose (organ) 2.19E-02 man-rem (thyroid)

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

E1-31

2006 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 8.18E-02 mrad 5 mrad < 1% ESE/1250 meters Beta Air 1.50E-01 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 4.04E-02 mrem N/A N/A SE/1372 meters Skin 8.24E-02 mrem N/A N/A SE/1 372 meters Organ Doses Child/Thyroid 1.99E-02 mrem 7.5 mrem < 1% NE/3829 meters Child/Total Body 1.44E-02 mrem 7.5 mrem < 1% NE/3829 meters Population Doses Total Body Dose 6.06E-02 man-rem Maximum Organ Dose (organ) 9.13E-02 man-rem (thyroid)

Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 8.81E-03 mrad 5 mrad < 1% ESE/1250 meters Beta Air 5.58E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 5.07E-03 mrem N/A N/A SE/1372 meters Skin 7.99E-03 mrem N/A N/A SE/1372 meters Organ Doses Infant/Thyroid 1.80E-02 mrem 7.5 mrem < 1% SSW/3353 meters Child/Total Body 6.06E-03 mrem 7.5 mrem < 1% E/4991 meters Population Doses Total Body Dose 2.95E-02 man-rem Maximum Organ Dose (organ) 6.47E-02 man-rem (thyroid)

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

El-32

2006 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 1.7E-03 1.5 mrem < 1%

Child Liver 2.OE-03 5 mrem < 1%

Child Thyroid 1.6E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 21,431 Population Doses Total Body Dose 6.6E-02 man-rem Maximum Organ Dose (organ) 6.7E-02 man-rem (Thyroid)

Second Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Adult/Child Total Body 1.1E-02 1.5 mrem < 1%

Child Liver 1 .4E-02 5 mrem < 1%

Child Thyroid 1.3E-02 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 13,305 Population Doses Total Body Dose 6.6E-01 man-rem Maximum Organ Dose (organ) 6.6E-01 man-rem (Liver, Bone, Thyroid)

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

E1-33

2006 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 7.6E-03 1.5 mrem < 1%

Child Bone 1.2E-02 5 mrem < 1%

Child Thyroid 8.OE-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 19,647 Population Doses Total Body Dose 2.5E-01 man-rem Maximum Organ Dose (organ) 2.6E-01 man-rem (GIT, Thyroid)

Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Adult Total Body 7.3E-03 1.5 mrem < 1%

Teen Liver 9.5E-03 5 mrem < 1%

Child Thyroid 9.7E-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 27,358 Population Doses Total Body Dose 3.OE-02 man-rem Maximum Organ Dose (organ) 3.OE-02 man-rem (Liver, Bone)

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

E1-34

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 8 Total Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)

Total body air 1.48E-02 6.79E-03 4.04E-02 5.07E-03 (submersion)

Critical organ dose 5.69E-03 5.26E-03 1.44E-02 6.06E-02 (airborne)

Total body dose 1.70E-03 1.10E-02 7.60E-03 7.30E-03 (liquid)

Maximum organ dose 2.OOE-03 1.40E-02 1.20E-02 9.50E-03 (liquid)

Direct Radiation Dose O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Total 2.42E-02 3.71 E-02 7.44E-02 8.25E-02 Cumulative Total Dose (mrem) 2.18E-01 Annual Dose Limit (mrem) 25 Percent of Limit 0.87%

Thyroid Total body air 1.48E-02 6.79E-03 4.04E-02 5.07E-03 (submersion)

Thyroid dose 5.72E-03 5.55E-03 1.99E-02 1.80E-02 (airborne)

Total body dose 1.70E-03 1.10E-02 7.60E-03 7.30E-03 (liquid)

Thyroid dose 1.60E-03 1.30E-02 8.OOE-03 9.70E-04 (liquid)

Direct Radiation Dose O.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Total 2.38E-02 3.63E-02 7.59E-02 3.13E-03 Cumulative Total Dose (mrem) 1.67E-01 Annual Dose Limit (mrem) 75 Percent of Limit 0.22%

E1-35

2006 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, 2006 - MAR 31, 2006 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 0.046 0.465 0.093 0.000 0.000 0.604 NNE 0.000 0.000 0.000 0.000 0.186 0.743 0.093 0.000 0.000 1.022 NE 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 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 0.325 0.186 0.000 0.000 0.511 SSW 0.000 0.000 0.000 0.093 0.836 2.230 0.000 0.000 0.000 3.160 SW 0.000 0.000 0.000 0.046 0.279 0.232 0.000 0.000 0.000 0.558 WSW 0.000 0.000 0.046 0.000 0.186 0.139 0.000 0.000 0.000 0.372 W 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0 .186 WNW 0.000 0.000 0.000 0.000 0.000 0.232 0.046 0.000 0.000 0.279 NW 0.000 0.000 0.000 0.000 0.000 0.418 0.046 0.000 0.000 0.465 NNW 0.000 0.000 0.000 0.093 0.093 0.372 0.000 0.000 0.000 0.558 SUBTTOTAL 0.000 0.000 0.046 0.279 1.719 5.390 0.465 0.000 0.000 7.900 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS A 170 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 170 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/05/15 MEAN WIND SPEED = 8.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-36

2006 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, 2006 - MAR 31, 2006 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 0.139 0.139 0.093 0.000 0.000 0.000 0.372 NNE 0.000 0.000 0.000 0.046 0.186 0.046 0.000 0.000 0.000 0.279 NE 0.000 0.000 0.093 0.093 0.093 0.186 0.000 0.000 0.000 0.465 ENE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 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 0.232 0.046 0.000 0.000 0.279 SSW 0.000 0.000 0.000 0.186 0.558 0.279 0.046 0.000 0.000 1.069 SW 0.000 0.000 0.000 0.232 0.558 0.000 0.000 0.000 0.000 0.790 WSW 0.000 0.000 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.279 W 0.000 0.000 0.000 0.046 0.000 0.093 0.000 0.000 0.000 0.139 WNW 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.093 NW 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.186 NNW 0.000 0.000 0.000 0.046 0.139 0.093 0.000 0.000 0.000 0.279 SUBTOTAL 0.000 0.000 0.139 0.883 1.905 1.348 0.093 0.000 0.000 4.368 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS B 95 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/05/15 MEAN WIND SPEED = 6.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-37

2006 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, 2006 - MAR 31, 2006 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 0.139 0.000 0.232 0.000 0.000 0.000 0.372 NNE 0.000 0.000 0.000 0.139 0.093 0.232 0.000 0.000 0.000 0 .465 NE 0.000 0.000 0.046 0 .093 0.000 0.000 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0 .093 E 0.000 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.139 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 0.093 0.046 0.000 0.000 0.000 0.000 0.186 S 0.000 0.000 0.000 0.186 0.046 0.000 0.046 0.000 0.000 0.279 SSW 0.000 0.000 0.000 0.279 0.232 0.418 0.000 0.000 0.000 0.929 SW 0.000 0.000 0.046 0.279 0.186 0.000 0.000 0.000 0.000 0.511 WSW 0.000 0.000 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.139 W 0.000 0.000 0.000 0.046 0.046 0.139 0.000 0.000 0.000 0.232 WNW 0.000 0.000 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.186 NW 0.000 0.000 0.046 0 .093 0.046 0.139 0.000 0.000 0.000 0.325 NNW 0.000 0.000 0.000 0.139 0.093 0.232 0.000 0.000 0.000 0.465 SUBTOTAL 0.000 0.000 0.325 1.719 0.929 1.487 0.046 0.000 0.000 4.507 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS C 98 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 97 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/05/15 MEAN WIND SPEED = 6.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-38

2006 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, 2006 - MAR 31, 2006 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 0.372 0.836 1.952 2.835 0.093 0.000 0.000 6.087 NNE 0.000 0.000 0.372 0.743 0.743 0.929 0.000 0.000 0.000 2.788 NE 0.000 0.046 0.325 0.279 0.511 0.139 0.000 0.000 0.000 1.301 ENE 0.000 0.000 0.232 0.139 0.139 0.093 0.000 0.000 0.000 0.604 E 0.000 0.000 0.325 0.000 0.046 0.000 0.000 0.000 0.000 0.372 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.279 0.186 0.000 0.046 0.000 0.000 0.000 0.511 S 0.000 0.046 0.511 0.325 0.186 0.651 0.325 0.046 0.000 2.091 SSW 0.000 0.000 0.790 1.394 0.743 1.255 0.139 0.000 0.000 4.322 SW 0.000 0.093 1.162 0.743 0.372 0.139 0.000 0.000 0.000 2.509 WSW 0.000 0.000 0.651 0.325 0.139 0.139 0.000 0.000 0.000 1.255 W 0.000 0.093 0.511 0.743 0.325 0 .790 0.000 0.000 0.000 2.463 WNW 0.000 0.000 0.418 0.790 0.697 1.022 0.000 0.000 0.000 2.928 NW 0.000 0.000 0.465 0.651 0.697 0.836 0.093 0.000 0.000 2.742 NNW 0.000 0.000 0.558 0.465 0.790 1.812 0.046 0.000 0.000 3.671 SUBTOTAL 0.000 0.325 7.017 7.667 7.342 10.688 0.697 0.046 0.000 33.783 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS D 728 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 727 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/05/15 MEAN WIND SPEED = 6.18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-39

2006 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, 2006 - MAR 31, 2006 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0.325 0.604 0.651 0.139 0.000 0.000 0.000 1.766 NNE 0.000 0.046 0.558 0.325 0.046 0.000 0.000 0.000 0.000 0.976 NE 0.000 0.093 0.418 0.279 0.000 0.000 0.000 0.000 0.000 0.790 ENE 0.000 0.000 0.743 0.000 0.046 0.000 0.000 0.000 0.000 0.790 E 0.000 0.046 0.372 0.000 0.000 0.000 0.000 0.000 0.000 0.418 ESE 0.000 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.279 SE 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0 .186 SSE 0.000 0.046 0.279 0.139 0.000 0.000 0.000 0.000 0.000 0.465 S 0.000 0.186 0.883 0.558 0.372 0.604 0.093 0.000 0.000 2.695 SSW 0.000 0.232 1.441 2.184 1.952 1.580 0.093 0.000 0.000 7.481 SW 0.000 0.232 1.487 0.651 0.186 0.093 0.000 0.000 0.000 2.649 WSW 0.000 0.372 0.883 0.372 0.000 0.093 0.000 0.000 0.000 1.719 W 0.000 0.139 1.069 0.279 0.232 0.046 0.000 0.000 0.000 1.766 WNW 0.000 0.418 0.465 0.743 0.186 0.046 0.000 0 .000 0.000 1.859 NW 0.000 0.046 0.511 0.558 0.465 0.232 0.000 0.000 0.000 1.812 NNW 0.000 0.000 0.511 0.604 0.465 0.093 0.000 0.000 0.000 1.673 SUBTOTAL 0.000 2.091 10.223 7.296 4.600 2.928 0.186 0.000 0.000 27.323 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS E 589 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 588 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/05/15 MEAN WIND SPEED = 4.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-40

2006 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, 2006 - MAR 31, 2006 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 0.139 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.280 NNE 0.001 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.187 NE 0.002 0.186 0.279 0.046 0.000 0.000 0.000 0.000 0.000 0.513 ENE 0.002 0.186 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.467 E 0.001 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.280 ESE 0.001 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.140 SE 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 SSE 0.001 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.140 S 0.002 0 .186 0.325 0.046 0.000 0.000 0.000 0.000 0.000 0.560 SSW 0.003 0.139 0.511 0.418 0.000 0.000 0.000 0.000 0.000 1.072 SW 0.005 0.232 0.790 0.093 0.000 0.000 0.000 0.000 0.000 1.120 WSW 0.010 0.697 1.487 0.000 0.000 0.000 0.000 0.000 0.000 2.194 W 0.006 0.558 0.743 0.046 0.000 0.000 0.000 0.000 0.000 1.354 WNW 0.005 0.418 0.558 0.000 0.000 0.000 0.000 0.000 0.000 0 .980 NW 0.004 0 .604 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.840 NNW 0.003 0.232 0.325 0.046 0.000 0.000 0.000 0.000 0.000 0.607 SUBTOTAL 0.046 4.089 5.901 0.790 0.000 0.000 0.000 0.000 0.000 10.827 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS F 233 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 233 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATI ONS 2152 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/05/15 MEAN WIND SPEED = 1.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-41

2006 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, 2006 - MAR 31, 2006 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 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.141 NNE 0.002 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.187 NE 0.001 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.141 ENE 0.003 0.186 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.422 E 0.004 0.325 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.469 ESE 0.002 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SE 0.002 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SSE 0.001 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.141 S 0.003 0.232 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.421 SSW 0.005 0.465 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.609 SW 0.009 0.604 0.418 0.046 0.000 0.000 0.000 0.000 0.000 1.077 WSW 0.021 1.394 1.069 0.000 0.000 0.000 0.000 0.000 0.000 2.483 W 0.022 1.859 0.790 0.000 0.000 0.000 0.000 0.000 0.000 2.671 WNW 0.009 0.883 0.186 0.000 0.000 0.000 0.000 0.000 0.000 1.078 NW 0.005 0.325 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.609 NNW 0.004 0.186 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.469 SUBTOTAL 0.093 7.296 3.810 0.093 0.000 0.000 0.000 0.000 0.000 11.292 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS G 243 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 243 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/05/15 MEAN WIND SPEED = 1.33 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-42

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Watts Bar Nuclear Plant APR 1, 2006 - JUN 30, 2006 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 0.093 0.093 0.093 0.000 0.000 0.279 NNE 0.000 0.000 0.000 0.046 0.093 0.186 0.000 0.000 0.000 0.325 NE 0.000 0.000 0.046 0.000 0.000 0.093 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0 .046 0.279 0.000 0.000 0.000 0.000 0.325 E 0.000 0 .000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 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 0.046 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.325 0.372 0.000 0.000 0.000 0.697 SSW 0.000 0.000 0.046 0.000 0.558 0.883 0.000 0.000 0.000 1.487 SW 0.000 0.000 0.000 0.046 0.139 0.093 0.000 0.000 0.000 0.279 WSW 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.046 0.232 0.046 0.000 0.000 0.325 NW 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 NNW 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 SUBTOTAL 0.000 0.000 0.139 0.186 1.626 2.277 0.139 0.000 0.000 4.368 TOTAL HOURS Or VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS A 94 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 94 TOTAL HOURS Or VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/08/16 MEAN WIND SPEED = 7.93 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-43

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Watts Bar Nuclear Plant APR 1, 2006 - JUN 30, 2006 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 0.139 0.139 0.232 0.046 0.000 0.000 0.558 NNE 0.000 0.000 0.000 0.046 0.279 0.372 0.000 0.000 0.000 0.697 NE 0.000 0.000 0.093 0.093 0.046 0.186 0.000 0.000 0.000 0.418 ENE 0.000 0.000 0.000 0.139 0.279 0.000 0.000 0.000 0.000 0.418 E 0.000 0.000 0.000 0.232 0.046 0.000 0.000 0.000 0.000 0.279 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.046 0.186 0 .093 0.000 0.000 0.000 0.325 SSW 0.000 0.000 0.000 0.372 0.372 0 .604 0.000 0.000 0.000 1.348 SW 0.000 0.000 0.000 0.093 0.186 0.232 0.000 0.000 0.000 0.511 WSW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.186 WNW 0.000 0.000 0.000 0.000 0.093 0.093 0.046 0.000 0.000 0.232 NW 0.000 0.000 0.000 0.000 0.046 0.232 0.000 0.000 0.000 0.279 NNW 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.139 SUBTOTAL 0.000 0.000 0.093 1.255 1.859 2.184 0.093 0.000 0.000 5.483 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS B 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/08/16 MEAN WIND SPEED - 7.10 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-44

2006 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, 2006 - JUN 30, 2006 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 0.186 0.046 0.186 0.000 0.000 0.000 0.418 NNE 0.000 0.000 0.000 0.651 0.372 0.186 0.046 0.000 0.000 1.255 NE 0.000 0.000 0.186 0.186 0.139 0.093 0.000 0.000 0.000 0.604 ENE 0.000 0.000 0.139 0.279 0.000 0.000 0.000 0.000 0.000 0.418 E 0.000 0.000 0.139 0.186 0.046 0.000 0.000 0.000 0.000 0.372 ESE 0.000 0.000 0.093 0.279 0.000 0.000 0.000 0.000 0.000 0.372 SE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.232 S 0.000 0.000 0.000 0.372 0.093 0.046 0.000 0.000 0.000 0.511 SSW 0.000 0.000 0.046 0.836 0.418 0.093 0.000 0.000 0.000 1.394 SW 0.000 0.000 0.000 0.511 0.232 0.046 0.000 0.000 0.000 0.790 WSW 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.000 0.186 0.186 0.046 0.000 0.000 0.418 WNW 0.000 0.000 0.000 0.046 0.046 0.186 0.000 0.000 0.000 0.279 NW 0.000 0.000 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.139 NNW 0.000 0.000 0.046 0.093 0.046 0.093 0.000 0.000 0.000 0.279 SUBTOTAL 0.000 0.000 0.790 3.857 1.673 1.255 0.093 0.000 0.000 7.667 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS C 165 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 165 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/08/16 MEAN WIND SPEED = 5.73 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-45

2006 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, 2006 - JUN 30, 2006 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 0.558 0.511 0.465 0.418 0.000 0.000 0.000 1.952 NNE 0.000 0.000 0. 604 0.651 0.372 0.976 0.046 0.000 0.000 2.649 NE 0.000 0.000 0.697 0.697 0.093 0.046 0.000 0.000 0.000 1.533 ENE 0.000 0.000 0.743 0.558 0.000 0 .093 0.000 0.000 0.000 1.394 E 0.000 0.000 0.279 0.279 0.046 0.000 0.000 0.000 0.000 0.604 ESE 0.000 0.000 0.232 0.093 0.000 0.000 0.000 0.000 0.000 0.325 SE 0.000 0.093 0.325 0.093 0.093 0.000 0.000 0.000 0.000 0.604 SSE 0.000 0.139 1.208 0.232 0.325 0.139 0.000 0.000 0.000 2.045 S 0.000 0.000 1.441 0.743 0.325 0.093 0.000 0.000 0.000 2.602 SSW 0.000 0.139 1.441 2.184 0. 651 0.465 0.046 0.000 0.000 4.926 SW 0.000 0.139 0. 697 0.883 0.232 0.046 0.000 0.000 0.000 1.998 WSW 0.000 0.093 0.372 0 .465 0.325 0.186 0.000 0.000 0.000 1.441 W 0.000 0.046 0.279 0.372 0.232 0.232 0.000 0.000 0.000 1.162 WNW 0.000 0.046 0.139 0.325 0.232 0.418 0.046 0.000 0.000 1.208 NW 0.000 0.000 0.372 0.372 0.186 0.139 0.046 0.000 0.000 1.115 NNW 0.000 0.046 0.604 0.558 0.465 0.418 0.000 0.000 0.000 2.091 SUBTOTAL 0.000 0.743 9.991 9.015 4.043 3.671 0.186 0.000 0.000 27.649 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS D 596 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 595 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/08/16 MEAN WIND SPEED = 4.59 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-46

2006 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, 2006 - JUN 30, 2006 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.046 0. 929 0.743 0.325 0.046 0.000 0.000 0.000 2.091 NNE 0.000 0.000 0.558 0.139 0.046 0.000 0.000 0.000 0.000 0.743 NE 0.000 0.046 0.604 0 .139 0.046 0.000 0.000 0.000 0.000 0.836 ENE 0.000 0.093 0.418 0.232 0.000 0.000 0.000 0.000 0.000 0.743 E 0.000 0.093 0.232 0.093 0.000 0.000 0.000 0.000 0.000 0.418 ESE 0.000 0.046 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.325 SE 0.000 0.186 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.372 SSE 0.000 0.279 0.511 0.372 0.139 0.139 0.000 0.000 0.000 1.441 S 0.000 0.372 1.162 0.558 0.232 0.000 0.000 0.000 0.000 2.323 SSW 0.000 0.139 2.835 1.301 0. 697 0.232 0.000 0.000 0.000 5.204 SW 0.000 0.604 1.441 0.465 0.139 0.000 0.000 0.000 0.000 2.649 WSW 0.000 0.511 1.255 0.232 0.046 0.000 0.000 0.000 0.000 2 .045 W 0.000 0.558 0.883 0.139 0.186 0.000 0.000 0.000 0.000 1.766 WNW 0.000 0.465 0.790 0.558 0.093 0.000 0.000 0.000 0.000 1.905 NW 0.000 0.186 0.465 0.232 0.046 0.046 0.000 0.000 0.000 0.976 NNW 0.000 0.046 0.465 0.418 0.325 0.000 0.000 0.000 0.000 1.255 SUBTOTAL 0.000 3.671 12.965 5.669 2.323 0.465 0.000 0.000 0.000 25.093 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS E 542 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 540 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/08/16 MEAN WIND SPEED = 3.14 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-47

2006 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, 2006 - JUN 30, 2006 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.003 0.186 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.374 NNE 0.002 0.046 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.234 NE 0.003 0.232 0.232 0.000 0.000 0.046 0.000 0.000 0.000 0.514 ENE 0.001 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.094 E 0.003 0.232 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.468 ESE 0.001 0 .093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SE 0.001 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.140 SSE 0.002 0.232 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.328 S 0.002 0.139 0.186 0.046 0.000 0.000 0.000 0.000 0.000 0.374 SSW 0.013 0.418 1.487 0.372 0.000 0.000 0.000 0.000 0.000 2.290 SW 0.011 0.651 0. 976 0.000 0.000 0.000 0.000 0 .000 0.000 1.638 WSW 0.012 0.604 1.162 0.046 0.000 0.000 0.000 0.000 0.000 1.824 W 0.016 1.348 1.022 0.000 0.046 0.000 0.000 0.000 0.000 2.433 WNW 0.010 1.255 0.232 0.000 0.000 0.000 0.000 0.000 0.000 1 .497 NW 0.009 0.604 0.697 0.046 0.000 0.000 0.000 0.000 0.000 1.357 NNW 0.004 0.139 0.372 0.000 0.000 0.000 0.000 0.000 0.000 0.515 SUBTOTAL 0.093 6.273 7.203 0.511 0.046 0.046 0.000 0.000 0.000 14.173 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS F 305 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 305 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/08/16 MEAN WIND SPEED = 1.80 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-48

2006 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, 2006 - JUN 30, 2006 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 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 NNE 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NE 0.000 0 .093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.186 ENE 0.000 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.186 E 0.000 0.186 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.232 ESE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SSE 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.186 S 0.000 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.232 SSW 0.000 0.604 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.883 SW 0.000 0.976 0.697 0.000 0.000 0.000 0.000 0.000 0.000 1 .673 WSW 0.000 2.091 1.162 0.000 0.000 0.000 0.000 0.000 0.000 3.253 W 0.000 2.649 1.115 0.000 0.000 0.000 0.000 0.000 0.000 3.764 WNW 0.000 1.952 0.511 0.046 0.000 0.000 0.000 0.000 0.000 2.509 NW 0.000 0.743 0.651 0.000 0.000 0.000 0.000 0.000 0.000 1.394 NNW 0.000 0.279 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.418 SUBTOTAL 0.000 10.177 5.344 0.046 0.000 0.000 0.000 0.000 0.000 15.567 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2155 TOTAL HOURS OF STABILITY CLASS G 335 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 335 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2152 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: 2006/08/16 MEAN WIND SPEED = 1.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR El-49

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Watts Bar Nuclear Plant JUL 1, 2006 - SEP 30, 2006 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 0.143 0.238 0.143 0.000 0.000 0.000 0.524 NNE 0.000 0.000 0.000 0.000 0.286 0.190 0.000 0.000 0.000 0.476 NE 0.000 0.000 0.000 0.000 0.190 0.000 0.000 0.000 0.000 0.190 ENE 0.000 0.000 0.048 0.048 0.095 0.000 0.000 0.000 0.000 0.190 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.048 0. 333 0.048 0.000 0.000 0.000 0.429 SSW 0.000 0 .048 0.000 0.714 1.238 0.524 0.000 0.000 0.000 2.524 SW 0.000 0.000 0.000 0.000 0.190 0.000 0.000 0.000 0.000 0.190 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 NW 0.000 0.000 0.000 0.048 0.095 0.000 0.000 0.000 0.000 0.143 NNW 0.000 0.000 0.000 0.048 0.048 0.048 0.000 0.000 0.000 0.143 SUBTOTAL 0.000 0.048 0.048 1.048 2.714 1.000 0.000 0.000 0.000 4.857 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS A 102 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 102 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 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: 2006/11/07 MEAN WIND SPEED = 6.40 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-50

2006 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, 2006 - SEP 30, 2006 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 0.143 0.333 0.000 0.000 0.000 0.000 0.476 NNE 0.000 0.000 0.000 0.286 0.143 0.143 0.000 0.000 0.000 0.571 NE 0.000 0.000 0.095 0 .190 0.095 0 .095 0.000 0.000 0.000 0.476 ENE 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 E 0.000 0.000 0.048 0.143 0.000 0.000 0.000 0.000 0.000 0.190 ESE 0.000 0.000 0.048 0.143 0.000 0.000 0.000 0.000 0.000 0.190 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 0.190 0.000 0.000 0.000 0.000 0.000 0.190 S 0.000 0.000 0.000 0.333 0.143 0.048 0.000 0.000 0.000 0.524 SSW 0.000 0.000 0.000 0.714 0.190 0.048 0.000 0.000 0.000 0.952 SW 0.000 0.000 0.095 0.238 0.048 0.000 0.000 0 .000 0.000 0.381 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 0.048 0.048 0.000 0.000 0 .000 0.000 0.095 WNW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0 .000 0.000 0.048 NW 0.000 0.000 0.000 0.143 0.048 0.000 0.000 0 .000 0.000 0.190 NNW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0 .000 0.000 0.048 SUBTOTAL 0.000 0.000 0.286 2.667 1.048 0.381 0.000 0.000 0.000 4.381 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS B 92 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 92 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 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: 2006/11/07 MEAN WIND SPEED = 5.22 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-51

2006 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, 2006 - SEP 30, 2006 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 0.143 0 .143 0.238 0.048 0.000 0.000 0.000 0 .571 NNE 0.000 0.000 0.048 0.476 0.429 0.143 0.000 0.000 0.000 1.095 NE 0.000 0.000 0.000 0.190 0.000 0.048 0.000 0.000 0.000 0.238 ENE 0.000 0.000 0.190 0 .095 0.000 0.000 0.000 0.000 0.000 0.286 E 0.000 0.000 0.048 0.238 0.000 0.000 0.000 0.000 0.000 0.286 ESE 0.000 0.000 0.286 0.000 0.048 0.000 0.000 0 .000 0.000 0.333 SE 0.000 0.000 0.095 0.143 0.000 0.000 0.000 0.000 0.000 0.238 SSE 0.000 0.000 0.143 0.429 0.095 0.000 0.000 0 .000 0.000 0.667 S 0.000 0.000 0.238 0.524 0.095 0.000 0.000 0.000 0.000 0.857 SSW 0.000 0.000 0.095 0.619 0.095 0.048 0.000 0.000 0.000 0.857 SW 0.000 0.000 0.048 0.238 0.048 0.000 0.000 0.000 0.000 0.333 WSW 0.000 0.000 0.048 0.048 0.000 0.000 0.000 0.000 0.000 0.095 W 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 WNW 0.000 0.000 0.095 0.000 0.048 0.000 0.000 0.000 0.000 0.143 NW 0.000 0.000 0.000 0.000 0.095 0.048 0.000 0.000 0.000 0.143 NNW 0.000 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 SUBTOTAL 0.000 0.000 1.571 3.238 1.190 0.333 0.000 0.000 0.000 6.333 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS C 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 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: 2006/11/07 MEAN WIND SPEED = 4.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-52

2006 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, 2006 - SEP 30, 2006 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 0.476 0.429 0.762 0.286 0.000 0.000 0.000 1.952 NNE 0.000 0.000 0.524 1.048 1.000 0.905 0.000 0.000 0.000 3.476 NE 0.000 0.048 0.571 0.810 0.381 0.095 0.000 0.000 0.000 1 .905 ENE 0.000 0.048 1.286 0.476 0.143 0.000 0.000 0.000 0.000 1.952 E 0.000 0.048 1.381 0.476 0.000 0.000 0.000 0.000 0.000 1 .905 ESE 0.000 0.048 0.810 0.238 0.048 0.000 0.000 0.000 0.000 1.143 SE 0.000 0.095 0.667 0.333 0.048 0.000 0.000 0.000 0.000 1.143 SSE 0.000 0.048 1.000 0.667 0.048 0.000 0.000 0.000 0.000 1.762 S 0.000 0.048 1.810 1.333 0.095 0 .095 0.000 0.000 0.000 3.381 SSW 0.000 0.095 2.286 2.714 0.429 0.048 0.000 0.000 0.000 5.571 SW 0.000 0.000 1.048 0.619 0.143 0.000 0.000 0.000 0.000 1.810 WSW 0.000 0.048 0.429 0.143 0.095 0.000 0.000 0.000 0.000 0.714 W 0.000 0.000 0.190 0.048 0.000 0.095 0.000 0.000 0.000 0.333 WNW 0.000 0.000 0.333 0.286 0.143 0.095 0.000 0.000 0.000 0.857 NW 0.000 0.000 0.286 0.048 0.381 0.048 0.000 0.000 0.000 0 .762 NNW 0.000 0.000 0.286 0 .381 0.143 0.143 0.095 0.000 0.000 1.048 SUBTOTAL 0.000 0.524 13.381 10.048 3.857 1.810 0.095 0.000 0.000 29.714 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS D 626 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 624 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 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: 2006/11/07 MEAN WIND SPEED = 3.99 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-53

2006 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, 2006 - SEP 30, 2006 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 0.095 0. 667 0.714 0.333 0.000 0.000 0.000 0.000 1 .811 NNE 0.002 0 .190 0.524 0.143 0.286 0.095 0.000 0.000 0.000 1 .240 NE 0.001 0.048 0.571 0.476 0.095 0.000 0.000 0.000 0.000 1 .192 ENE 0.002 0 .048 0.762 0.381 0.000 0.000 0.000 0.000 0.000 1 .192 E 0.001 0.095 0.381 0 .095 0.000 0.000 0.000 0.000 0.000 0.573 ESE 0.001 0.190 0.143 0.048 0.000 0.000 0.000 0.000 0.000 0.382 SE 0.001 0.048 0.429 0.048 0.000 0.000 0.000 0.000 0.000 0.525 SSE 0.002 0.190 0.476 0 .095 0.000 0.000 0.000 0.000 0.000 0.763 S 0.005 0.429 1.619 0.667 0.048 0.000 0.000 0.000 0.000 2.767 SSW 0.008 0.571 2.667 1.000 0.095 0 .095 0.000 0.000 0.000 4.436 SW 0.006 0 .952 1.524 0.286 0.000 0.000 0.000 0.000 0.000 2.768 WSW 0.004 0 .619 1.000 0.095 0.048 0.000 0.000 0.000 0.000 1.766 W 0.004 0.714 1.000 0.095 0.048 0.000 0.000 0.000 0.000 1.861 WNW 0.004 0 .714 0. 905 0.143 0.000 0.000 0.000 0.000 0.000 1.766 NW 0.004 0 .429 1.048 0.238 0.143 0.000 0.000 0.000 0.000 1.861 NNW 0.002 0.333 0. 619 0.714 0.095 0.095 0.000 0.000 0.000 1.859 SUBTOTAL 0.048 5.667 14.333 5.238 1.190 0.286 0.000 0.000 0.000 26.762 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS E 563 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 562 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/11/07 MEAN WIND SPEED = 2.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-54

2006 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, 2006 - SEP 30, 2006 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 0.238 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.382 NNE 0.000 0.143 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.191 NE 0.000 0.000 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.143 ENE 0.001 0.048 0.333 0.000 0.000 0.000 0.000 0.000 0.000 0.382 E 0.000 0.095 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.191 ESE 0.000 0 .095 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.095 SE 0.000 0.143 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.191 SSE 0.000 0.143 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.238 S 0.002 0.381 0.333 0.048 0.000 0.000 0.000 0.000 0.000 0.764 SSW 0.003 0.381 0.810 0.190 0.000 0.000 0.000 0.000 0.000 1.384 SW 0.004 0.952 0. 619 0.000 0.000 0.000 0.000 0.000 0.000 1.575 WSW 0.005 1.524 0.524 0.048 0.048 0.048 0.000 0.000 0.000 2.196 W 0.011 2.762 1.476 0.000 0.000 0.000 0.000 0.000 0.000 4.249 WNW 0.009 2.619 1.048 0.000 0.000 0.000 0.000 0.000 0.000 3.676 NW 0.007 1.667 1.286 0.048 0.000 0.000 0.000 0.000 0.000 3.007 NNW 0.002 0.571 0.095 0.048 0.000 0.000 0.000 0.000 0.000 0.716 SUBTOTAL 0.048 11.762 7.000 0.381 0.143 0.048 0.000 0.000 0.000 19.381 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 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 2100 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/11/07 MEAN WIND SPEED = 1.52 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-55

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA I > 4.0 C/100 M)

Watts Bar Nuclear Plant JUL 1, 2006 - SEP 30, 2006 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 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.143 NE 0.000 0 .048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .048 ENE 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .048 E 0.000 0.095 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.143 ESE 0.000 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.143 SE 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.095 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .048 SSW 0.000 0.429 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.476 SW 0.000 0 .571 0.143 0.000 0.000 0.000 0.000 0.000 0.000 0.714 WSW 0.000 0.810 0.333 0.000 0.000 0.000 0.000 0.000 0.000 1.143 W 0.000 0.810 0.667 0.000 0.000 0.000 0.000 0.000 0.000 1.476 WNW 0.000 1.524 0.524 0.000 0.000 0.000 0.000 0.000 0.000 2.048 NW 0.000 1.000 0.905 0.000 0.000 0.000 0.000 0.000 0.000 1.905 NNW 0.000 0.048 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.143 SUBTOTAL 0.000 5.810 2.762 0.000 0.000 0.000 0.000 0.000 0.000 8.571 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2103 TOTAL HOURS OF STABILITY CLASS G 180 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 180 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2100 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2006/11/07 MEAN WIND SPEED = 1.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-56

2006 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 OCT 1, 2006 - DEC 31, 2006 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 0.000 0.185 0.277 0.000 0.000 0.000 0.508 NNE 0.000 0.000 0.000 0 .092 0.185 0.646 0.000 0.000 0.000 0.923 NE 0.000 0.000 0.000 0.000 0.231 0.000 0.000 0.000 0.000 0.231 ENE 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.046 0.000 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 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.185 SSW 0.000 0.000 0.046 0.461 0.323 0.185 0.000 0.000 0.000 1.015 SW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0 .092 W 0.000 0.000 0.000 0.000 0.092 0.092 0.000 0.000 0.000 0.185 WNW 0.000 0.000 0.046 0.000 0.277 0.369 0.000 0.000 0.000 0.692 NW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 SUBTOTAL 0.000 0.000 0.323 0.600 1.707 1.661 0.000 0.000 0.000 4.292 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS A 93 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 93 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2007/01/12 MEAN WIND SPEED = 7.04 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-57

2006 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, 2006 - DEC 31, 2006 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 0.046 0.092 0.231 0.000 0.000 0.000 0.369 NNE 0.000 0.000 0.092 0.138 0.231 0.323 0.000 0.000 0.000 0.784 NE 0.000 0.000 0.000 0.185 0.185 0.092 0.000 0.000 0.000 0.461 ENE 0.000 0.000 0.046 0.046 0.185 0.000 0.000 0.000 0.000 0.277 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.046 0 .046 0.000 0.000 0.000 0.000 0.000 0 .092 S 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.000 0.092 0.508 0.185 0.092 0.000 0.000 0.000 0.877 SW 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.000 0.000 0.185 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 0.046 0.000 0.000 0.092 WNW 0.000 0.000 0.000 0.000 0.185 0.046 0.000 0.000 0.000 0.231 NW 0.000 0.000 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.138 NNW 0.000 0.000 0.000 0.092 0.000 0.138 0.000 0.000 0.000 0.231 SUBTOTAL 0.000 0.000 0.277 1.292 1.108 1.061 0.092 0.000 0.000 3.830 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS B 83 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 83 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2007/01/12 MEAN WIND SPEED - 6.41 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-58

2006 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, 2006 - DEC 31, 2006 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 0.185 0.046 0.046 0.138 0.046 0.000 0.000 0.461 NNE 0.000 0.000 0.277 0.277 0.046 0.138 0.000 0.000 0.000 0.738 NE 0.000 0.000 0.138 0.277 0.231 0.046 0.000 0.000 0.000 0.692 ENE 0.000 0.000 0.092 0.138 0.000 0.000 0.000 0.000 0.000 0.231 E 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.138 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.185 S 0.000 0.000 0.323 0 .092 0.046 0.000 0.000 0.000 0.000 0 .461 SSW 0.000 0.000 0.277 0.277 0.000 0.046 0.000 0.000 0.000 0 .600 SW 0.000 0.000 0.185 0.415 0.000 0.000 0.000 0.000 0.000 0.600 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 0.092 0.000 0.000 0.000 0.000 0.000 0.092 WNW 0.000 0.000 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.185 NW 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.138 NNW 0.000 0.000 0.138 0.000 0.046 0.092 0.000 0.000 0.000 0.277 SUBTOTAL 0.000 0.000 1.846 1.846 0.508 0.646 0.046 0.000 0.000 4.892 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS C 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 106 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 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: 2007/01/12 MEAN WIND SPEED = 4.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-59

2006 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, 2006 - DEC 31, 2006 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.046 0.554 0 .508 0.646 1.523 0.000 0.000 0.000 3.276 NNE 0.000 0.000 0.784 0.831 0.784 0.692 0.000 0.000 0.000 3.092 NE 0.000 0.185 0.831 0.692 0. 600 0.231 0.000 0.000 0.000 2.538 ENE 0.000 0.046 0.784 0.277 0.000 0.000 0.000 0.000 0.000 1.108 E 0.000 0.185 0.692 0.000 0.046 0.000 0.000 0.000 0.000 0.923 ESE 0.000 0.185 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.461 SE 0.000 0.000 0.369 0.000 0.000 0.000 0.000 0.000 0.000 0 .369 SSE 0.000 0.092 0.600 0.000 0.000 0.000 0.000 0.000 0.000 0.692 S 0.000 0.138 0.831 0.138 0.046 0.185 0.277 0.000 0.000 1.615 SSW 0.000 0.185 1.154 0.369 0.138 0.784 0.046 0.000 0.000 2.677 SW 0.000 0.092 1.061 0.369 0.185 0.092 0.000 0.000 0.000 1.800 WSW 0.000 0.046 0.969 0.231 0.138 0.000 0.046 0.000 0.000 1.431 W 0.000 0.046 0.692 0.369 0.231 0.138 0.000 0.000 0.000 1.477 WNW 0.000 0.138 0.508 0.692 0.831 0.415 0.000 0.000 0.000 2.584 NW 0.000 0.046 0.508 0.277 0. 646 0.461 0.092 0.000 0.000 2.030 NNW 0.000 0.046 0.461 0.323 0.323 1.477 0.046 0.000 0.000 2 .677 SUBTOTAL 0.000 1.477 11.075 5.076 4.615 5.999 0.508 0.000 0.000 28.749 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS D 624 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 623 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 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: 2007/01/12 MEAN WIND SPEED , 4.91 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-60

2006 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, 2006 - DEC 31, 2006 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 0.046 0.508 0.277 0.415 0.185 0.000 0.000 0.000 1.432 NNE 0.002 0.138 0.738 0.738 0.231 0.046 0.000 0.000 0.000 1.894 NE 0.003 0.185 0.784 0.277 0.138 0.000 0.000 0.000 0.000 1.387 ENE 0.004 0.277 1.154 0.138 0.000 0.000 0.000 0.000 0.000 1.573 E 0.002 0.323 0.508 0.000 0.000 0.000 0.000 0.000 0.000 0.833 ESE 0.002 0.277 0.277 0.092 0.000 0.000 0.000 0.000 0.000 0 .648 SE 0.001 0.046 0.185 0.046 0.046 0.000 0.000 0.000 0.000 0.324 SSE 0.002 0.277 0.323 0.000 0.000 0.046 0.000 0.000 0.000 0.648 S 0.003 0.323 0.831 0.369 0.138 0.231 0.092 0.000 0.000 1.987 SSW 0.005 0.461 1.246 0.692 0.231 0.046 0.046 0.000 0.000 2.727 SW 0.004 0.554 1.061 0.277 0.092 0.000 0.046 0.000 0.000 2.035 WSW 0.004 0.554 0.784 0.046 0.092 0.000 0.000 0.000 0.000 1.480 W 0.004 1.015 0.508 0.185 0.000 0.000 0.000 0.000 0.000 1.712 WNW 0.004 0.554 1.061 0.369 0.231 0.046 0.000 0.000 0.000 2.266 NW 0.004 0.415 1.108 0 .461 0.046 0.000 0.000 0.000 0.000 2.035 NNW 0.001 0.231 0.277 0.277 0.185 0.138 0.000 0.000 0.000 1.109 SUBTOTAL 0.046 5.676 11.352 4.246 1.846 0.738 0.185 0.000 0.000 24.089 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS E 522 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 522 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2007/01/12 MEAN WIND SPEED = 2.98 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-61

2006 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, 2006 - DEC 31, 2006 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 0.185 0.231 0.000 0.000 0.000 0.000 0.000 0.000 0.421 NNE 0.004 0 .138 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.281 NE 0.005 0.138 0.231 0.000 0.000 0.000 0.000 0.000 0.000 0.374 ENE 0.010 0.231 0.461 0.000 0.000 0.000 0.000 0.000 0.000 0.702 E 0.002 0.046 0.092 0.000 0.000 0 .000 0.000 0.000 0.000 0.140 ESE 0.003 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SE 0.004 0.185 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.281 SSE 0.003 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.187 S 0.007 0.231 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.515 SSW 0.009 0.231 0.415 0.046 0.000 0.000 0.000 0.000 0.000 0.701 SW 0.013 0.646 0.323 0.000 0.000 0.000 0.000 0.000 0.000 0.982 WSW 0.023 0 .692 0.969 0.000 0.000 0.000 0.000 0.000 0.000 1 .684 W 0.042 1.938 1.154 0.046 0.000 0.000 0.000 0.000 0.000 3.180 WNW 0.051 2.723 1.015 0.046 0.000 0.000 0.000 0.000 0.000 3.835 NW 0.041 1.431 1.523 0.046 0.000 0.000 0.000 0.000 0.000 3.040 NNW 0.010 0 .323 0.369 0.092 0.000 0.000 0.000 0.000 0.000 0.794 SUBTOTAL 0.231 9.460 7.337 0.277 0.000 0.000 0.000 0.000 0.000 17.305 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS F 375 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 375 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 TOTAL HOURS CALM METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2007/01/12 MEAN WIND SPEED = 1.52 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-62

2006 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, 2006 - DEC 31, 2006 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 0.023 0.323 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.392 NNE 0.020 0.323 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .343 NE 0.034 0.369 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0 .588 ENE 0.028 0.277 0.185 0.000 0.000 0.000 0.000 0 .000 0.000 0 .490 E 0.014 0.092 0.138 0.000 0.000 0.000 0.000 0 .000 0.000 0.245 ESE 0.008 0 .138 0.000 0.000 0.000 0.000 0.000 0 .000 0.000 0.147 SE 0.003 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.049 SSE 0.017 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.294 S 0.023 0.323 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.392 SSW 0.034 0 .461 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.588 SW 0.082 0.969 0.369 0.046 0.000 0.000 0.000 0.000 0.000 1.466 WSW 0.144 1.707 0.646 0.000 0.000 0.000 0.000 0.000 0.000 2 .498 W 0.209 2.353 1.061 0.000 0.000 0.000 0.000 0.000 0.000 3.624 WNW 0.121 1.338 0.646 0.000 0.000 0.000 0.000 0.000 0.000 2.106 NW 0.147 1.292 1.108 0.000 0.000 0.000 0.000 0.000 0.000 2.547 NNW 0.062 0.923 0.092 0.000 0.000 0.000 0.000 0.000 0.000 1.077 SUBTOTAL 0.969 11.214 4.615 0.046 0.000 0.000 0.000 0.000 0.000 16.844 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2168 TOTAL HOURS OF STABILITY CLASS G 365 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 365 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2167 TOTAL HOURS CALM 21 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: 2007/01/12 MEAN WIND SPEED = 1.20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-63

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 1.0 Deviations from ODCM Controls/Surveillance Requirements 9/17/2006 1/2.1.1 ERCW radiation monitors 0-RE-90-133, 134,140, 141 were declared inoperable at Table 1.1-1 0528 to support an ERCW flush in accordance with SOI-67.01. Chemistry was not Item 2.a notified by Operations until 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and 13 minutes following the monitors being Action C declared inoperable. The surveillance requirement to obtain a grab sample within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> of the monitors being declared inoperable was not met.

12/26/2006 1/2.2.2 During periods when containtment venting is in process the Auxiliary Building Table 2.2-2 Exhaust will be resampled when the lower containment radiation monitor reading Item k increases by 50%. The lower radiation monitor had increased by more than 50% as Footnote 10 a result of containment purge being terminated. The required sample was not obtained. A sample obtained the next shift showed no change in activity levels.

Review of the radiation monitor reading on 0-RE-90-1 01 also showed no change.

E1-64

2006 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 2.0 Radiation Monitors Inoperable for Greater than 30 days None 1/2.1.1 Condensate Demineralizer Radiation Monitor 0-RE-90-225 was inoperable for more 10/06/2006 Control 1.1.1 than 30 days due to malfunction of the radiation monitor sample pump. During this Action B period 2 tanks were released requiring duplicate sampling, independent verification Table 1.111 of the release permit, and discharge valve lineup.

Item 1.c E1-65

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