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| number = ML091260371
| number = ML091260371
| issue date = 12/31/2008
| issue date = 12/31/2008
| title = Watts Bar, Unit 1, 2008 Annual Radioactive Effluent Release Report
| title = Annual Radioactive Effluent Release Report
| author name =  
| author name =  
| author affiliation = Tennessee Valley Authority
| author affiliation = Tennessee Valley Authority
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=Text=
=Text=
{{#Wiki_filter:Enclosure I Watts Bar Nuclear Plant 2008 Annual Radioactive Effluent Release Report E1-1 2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION
{{#Wiki_filter:Enclosure I Watts Bar Nuclear Plant 2008 Annual Radioactive Effluent Release Report E1-1
: 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 pCi/ml total activity.2. The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to: a. Less than or equal to 1.5 mrem to the total body and less than or equal to 5 mrem to any organ during any calendar quarter.b. Less than or equal to 3 mrem to the total body and less than or equal to 10 mrem to any organ during any calendar year.E1-2 2008 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/mI is applied. This ECL is based on the Xe-1 35 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.B. Gaseous Concentration limits for gaseous releases are met through compliance with the maximum permissible dose rates for gaseous releases as defined in plant Offsite Dose Calculation Manual (ODCM) and presented in Section 1.A.1 of this report.3. Average Energy Watts Bar'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 activity 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.E1-3 2008 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. The Groundwater Sump is sampledmonthly and analyzed for gross gamma and tritium on a monthly basis and Sr-89, and Sr-90 quarterly.
The total activity released is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide.Monitoring Wells WBN started conducting an investigation of tritium releases to the groundwater in 2003 due to identification of tritium in three of the four newly installed on-site monitoring wells associated with the 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. The tritium concentrations obtained in 2008 from these non-REMP monitoring wells are listed below. Well samples analyzed for Sr-89, Sr-90, Fe-55, and Ni-63 were all non-detectable.
Well ID 05/13/2008 11/06/2008 Activity Activity pCi/L pCi/L F 1,422 1,794 H 2,008 Dry I <270 662 J <270 532 K 41,873 23,663 L 14.559 9,619 R 3,604 2,330 S 607 595 Onsite Radioactive Spills or Leaks There were no onsite radioactive spills or leaks.El -4 2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Doses from 1-131 Water Ingestion Pathway The radiological environmental monitoring program (REMP) requirements as specified in Table 3.12-1 from NUREG 1301, "Offsite Does Calculation Manual Guidance:
Standard Radiological Effluent Controls for Pressurized Water Reactors" April 1991, requires an 1-131 specific analysis for drinking water pathway samples if the annual dose from 1-131 is greater than 1 mrem. In order to evaluate the need for implementation of this additional analysis, the drinking water pathway dose from 1-131 to the maximum organ and age group was calculated.
The results reported here confirm that the drinking water pathway dose from 1-131 was only a small fraction of the 1 mrem limit and that the performance of the 1-131 specific analysis is not required for WBN REMP drinking water samples.Quarter 1 2 3 4 Totals 1-131 Ci 4.76E-05 0 8.21 E-05 0 1.29E-04 Child/Thyroid (torem) 4.6E-05 0 1.OE-4 0 1.46E-04 Population/Thyroid (mrerm) 2.3E-04 0 3.8E-04 0 6.1E-04 E1-5 2008 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 inthe 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 hours for 7 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within one hour (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).E1-6 2008 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 89 74 Each 2. Total time period of releases 12474 8733 Minutes 3. Maximum time period of release 297 175 Minutes 4. Average time period of releases 3 70 Minutes 5. Minimum time period for release 3 70,455utes
: 6. Average dilution stream flow during 13,384 14,455 CFS release periods B. Gaseous (Batches only -containment purges, and waste gas decay tanks)1. Number of releases 27 9 Each 2. Total time period of releases 53260 5930 Minutes 2.Ttltmepro f eess46302 3611 Minutes 3. Maximum time period for release 1973 659 Minutes 4. Average time period for releases 10 6 Minutes 5. Minimum time period for release 6. Abnormal Releases Value Units.1st Half 2nd Half A. Liquid Number of Releases 1 0 Total Activity Released N/A N/A Ci.B. Gaseous Number of Releases 2 0 Total Activity Released 0.OOE+00 N/A Ci E1-7 2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Liquid Abnormal Releases Release Type: Liquid Release Point: Auxiliary Boiler B Start Date/Time of Release: 2/10/2008 08:50 and 3/21/2008 10:30 An evaluation of the possible sources of tritium in the Auxiliary Boiler B was performed.
The most likely sources are the make-up water from the CST's, error in laboratory analysis, or some type of interference.
The make-up water supply for the Auxiliary Boiler B was from the Condensate Storage Tanks at the time tritium was detected in Auxiliary Boiler B. The tritium concentration in the CST's was < 3.946E-07 pCi/ml.The tritium concentration in the condensate at the time of the analysis was 1.397E-06 pCi/ml. Neither of these concentrations would account for the tritium concentration of 1.55E-05 pCi/ml identified in Auxiliary Boiler B. Since the source is not from the make-up water to the Auxiliary Boiler it is therefore believed that the concentration of hydrazine and ammonia in the Auxiliary Boiler may be causing interference.
To verify this, a sample was taken from the Auxiliary Boiler and analyzed for tritium. A second aliquot was taken from the same sample and processed through a cation column and then analyzed for tritium. The tritium concentration from the sample without treatment was 2.78E-05 pCi/ml and the sample that was analyzed using a cation column contained
<3.65E-07 pCi/ml tritium. Therefore, the tritium values obtained from 2/10/2008 to 3/21/2008 are from chemical interference and not tritium. No gamma emitting nuclides were identified in any of the Auxiliary Boiler samples. This evaluation documents in accordance with IE 80-10 that with the tritium identified in Auxiliary Boiler B was not real and that there was no increase dose to the public.E1-8 2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Gaseous Abnormal Releases Release Point: U2 Shield Building Vent Start Date/Time of Release: 02/23/2008 02:52


== Description:==
2008 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 pCi/ml total activity.
: 2. The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to:
: a. Less than or equal to 1.5 mrem to the total body and less than or equal to 5 mrem to any organ during any calendar quarter.
: b. Less than or equal to 3 mrem to the total body and less than or equal to 10 mrem to any organ during any calendar year.
E1-2


ABI/CVI Actuation An operator conducted a pre job brief with a nuclear assistant unit operator for the performance of SOI-90.02, "Gaseous Process Radiation Monitors," Section 5.10.3, "Align Monitors for use with "B" Purge Fans," which is directed from SOI-30.02, "Containment Purge System," Section 7.4 step 4, "Shutdown Cntmt Purge Including Annulus (Train A Purge Fan)". The control room operator made an incorrect assumption on step 1 of SOI-90.02, Section 5.10.3, to ensure Section 5.10.1 is complete.
2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION
The operator assumed this section, 5.10.1, was previously performed since the rad monitors were presently in service and that Section 5.10.1,"Block and Align Power to Monitors" did not need to be performed.
: 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/mI is applied. This ECL is based on the Xe-1 35 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.
The control room operator signed this step off without verifying all steps within Section 5.10.1 had been performed.
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.
The nuclear assistant unit operator continued on with the remaining steps of Section 5.10.3 as directed by the control room operator.When the nuclear assistant unit operator started the alignment for the rad monitors, a spike occurred on 1-RM-90-131 causing an actuation of "B" Train CVI/ABI.The isolation signal was generated due to an improper block of the rad monitors during the realignment of Cntmt Vent Rad Monitors in accordance with SOI-90.02.
: 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.
Chemistry was notified and a noble grab sample of ABGTS B from Unit 2. Shield Building Vent was obtained and analyzed.
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.
No activity was detected.
: 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.
This evaluation documents that as a result of the CVI there was no increase dose to the public.E1-9 2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT, Gaseous Abnormal Releases Release Point: U1 PORV Start Date/Time of Release: 02/22/2008 02:52
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 activity 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.
E1-3


== Description:==
2008 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. The Groundwater Sump is sampledmonthly and analyzed for gross gamma and tritium on a monthly basis and Sr-89, and Sr-90 quarterly. The total activity released is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide.
Monitoring Wells WBN started conducting an investigation of tritium releases to the groundwater in 2003 due to identification of tritium in three of the four newly installed on-site monitoring wells associated with the 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. The tritium concentrations obtained in 2008 from these non-REMP monitoring wells are listed below. Well samples analyzed for Sr-89, Sr-90, Fe-55, and Ni-63 were all non-detectable.
Well ID    05/13/2008  11/06/2008 Activity    Activity pCi/L        pCi/L F          1,422        1,794 H          2,008        Dry I        <270          662 J          <270          532 K        41,873      23,663 L        14.559        9,619 R          3,604        2,330 S          607          595 Onsite Radioactive Spills or Leaks There were no onsite radioactive spills or leaks.
El -4


PORV There was an unplanned release from the Steam Generator PORV's between 2/22/2008 and 3/25/2008 when the PORV's where intermittently opened during startup for U1C9. The water source for the Steam Generators during periods when the PORV's were open was the CST A. The
2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Doses from 1-131 Water Ingestion Pathway The radiological environmental monitoring program (REMP) requirements as specified in Table 3.12-1 from NUREG 1301, "Offsite Does Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors" April 1991, requires an 1-131 specific analysis for drinking water pathway samples if the annual dose from 1-131 is greater than 1 mrem. In order to evaluate the need for implementation of this additional analysis, the drinking water pathway dose from 1-131 to the maximum organ and age group was calculated. The results reported here confirm that the drinking water pathway dose from 1-131 was only a small fraction of the 1 mrem limit and that the performance of the 1-131 specific analysis is not required for WBN REMP drinking water samples.
Quarter                            1        2            3        4          Totals 1-131 Ci                        4.76E-05    0      8.21 E-05      0        1.29E-04 Child/Thyroid (torem)            4.6E-05    0        1.OE-4      0
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 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
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
 
2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 6-A Doses from Airborne Effluents First Quarter Individual Doses Pathway              Dose          Quarterly    Percent of        Location Limit        Limit External Gamma Air          2.03E-04 mrad        5 mrad        < 1%        E/1280 meters Beta Air        3.31E

Latest revision as of 13:04, 12 March 2020

Annual Radioactive Effluent Release Report
ML091260371
Person / Time
Site: Watts Bar Tennessee Valley Authority icon.png
Issue date: 12/31/2008
From:
Tennessee Valley Authority
To:
Office of Nuclear Reactor Regulation
References
Download: ML091260371 (65)
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Text

Enclosure I Watts Bar Nuclear Plant 2008 Annual Radioactive Effluent Release Report E1-1

2008 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 pCi/ml total activity.
2. The dose or dose commitment to a member of the public from radioactivity in liquid effluents released to unrestricted areas shall be limited to:
a. Less than or equal to 1.5 mrem to the total body and less than or equal to 5 mrem to any organ during any calendar quarter.
b. Less than or equal to 3 mrem to the total body and less than or equal to 10 mrem to any organ during any calendar year.

E1-2

2008 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/mI is applied. This ECL is based on the Xe-1 35 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.

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

3. Average Energy Watts Bar'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 activity 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.

E1-3

2008 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. The Groundwater Sump is sampledmonthly and analyzed for gross gamma and tritium on a monthly basis and Sr-89, and Sr-90 quarterly. The total activity released is obtained by determining the concentration of each nuclide and then multiplying by the volume discharged to arrive at the curie activity for each nuclide.

Monitoring Wells WBN started conducting an investigation of tritium releases to the groundwater in 2003 due to identification of tritium in three of the four newly installed on-site monitoring wells associated with the 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. The tritium concentrations obtained in 2008 from these non-REMP monitoring wells are listed below. Well samples analyzed for Sr-89, Sr-90, Fe-55, and Ni-63 were all non-detectable.

Well ID 05/13/2008 11/06/2008 Activity Activity pCi/L pCi/L F 1,422 1,794 H 2,008 Dry I <270 662 J <270 532 K 41,873 23,663 L 14.559 9,619 R 3,604 2,330 S 607 595 Onsite Radioactive Spills or Leaks There were no onsite radioactive spills or leaks.

El -4

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Doses from 1-131 Water Ingestion Pathway The radiological environmental monitoring program (REMP) requirements as specified in Table 3.12-1 from NUREG 1301, "Offsite Does Calculation Manual Guidance: Standard Radiological Effluent Controls for Pressurized Water Reactors" April 1991, requires an 1-131 specific analysis for drinking water pathway samples if the annual dose from 1-131 is greater than 1 mrem. In order to evaluate the need for implementation of this additional analysis, the drinking water pathway dose from 1-131 to the maximum organ and age group was calculated. The results reported here confirm that the drinking water pathway dose from 1-131 was only a small fraction of the 1 mrem limit and that the performance of the 1-131 specific analysis is not required for WBN REMP drinking water samples.

Quarter 1 2 3 4 Totals 1-131 Ci 4.76E-05 0 8.21 E-05 0 1.29E-04 Child/Thyroid (torem) 4.6E-05 0 1.OE-4 0 1.46E-04 Population/Thyroid (mrerm) 2.3E-04 0 3.8E-04 0 6.1E-04 E1-5

2008 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 inthe 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 (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).

E1-6

2008 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 89 74 Each
2. Total time period of releases 12474 8733 Minutes
3. Maximum time period of release 297 175 Minutes
4. Average time period of releases 3 70 Minutes
5. Minimum time period for release 3 70,455utes 13,384 14,455 CFS
6. Average dilution stream flow during release periods B. Gaseous (Batches only - containment purges, and waste gas decay tanks)
1. Number of releases 27 9 Each
2. Total time period off releases 2.Ttltmepro eess46302 53260 5930 3611 Minutes Minutes
3. Maximum time period for release 1973 659 Minutes 10 6 Minutes
4. Average time period for releases
5. Minimum time period for release
6. Abnormal Releases Value Units

.1st Half 2nd Half A. Liquid Number of Releases 1 0 Total Activity Released N/A N/A Ci.

B. Gaseous Number of Releases 2 0 Total Activity Released 0.OOE+00 N/A Ci E1-7

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Liquid Abnormal Releases Release Type: Liquid Release Point: Auxiliary Boiler B Start Date/Time of Release: 2/10/2008 08:50 and 3/21/2008 10:30 An evaluation of the possible sources of tritium in the Auxiliary Boiler B was performed. The most likely sources are the make-up water from the CST's, error in laboratory analysis, or some type of interference.

The make-up water supply for the Auxiliary Boiler B was from the Condensate Storage Tanks at the time tritium was detected in Auxiliary Boiler B. The tritium concentration in the CST's was < 3.946E-07 pCi/ml.

The tritium concentration in the condensate at the time of the analysis was 1.397E-06 pCi/ml. Neither of these concentrations would account for the tritium concentration of 1.55E-05 pCi/ml identified in Auxiliary Boiler B. Since the source is not from the make-up water to the Auxiliary Boiler it is therefore believed that the concentration of hydrazine and ammonia in the Auxiliary Boiler may be causing interference. To verify this, a sample was taken from the Auxiliary Boiler and analyzed for tritium. A second aliquot was taken from the same sample and processed through a cation column and then analyzed for tritium. The tritium concentration from the sample without treatment was 2.78E-05 pCi/ml and the sample that was analyzed using a cation column contained <3.65E-07 pCi/ml tritium. Therefore, the tritium values obtained from 2/10/2008 to 3/21/2008 are from chemical interference and not tritium. No gamma emitting nuclides were identified in any of the Auxiliary Boiler samples. This evaluation documents in accordance with IE 80-10 that with the tritium identified in Auxiliary Boiler B was not real and that there was no increase dose to the public.

E1-8

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Gaseous Abnormal Releases Release Point: U2 Shield Building Vent Start Date/Time of Release: 02/23/2008 02:52

==

Description:==

ABI/CVI Actuation An operator conducted a pre job brief with a nuclear assistant unit operator for the performance of SOI-90.02, "Gaseous Process Radiation Monitors," Section 5.10.3, "Align Monitors for use with "B"Purge Fans,"

which is directed from SOI-30.02, "Containment Purge System," Section 7.4 step 4, "Shutdown Cntmt Purge Including Annulus (Train A Purge Fan)". The control room operator made an incorrect assumption on step 1 of SOI-90.02, Section 5.10.3, to ensure Section 5.10.1 is complete. The operator assumed this section, 5.10.1, was previously performed since the rad monitors were presently in service and that Section 5.10.1, "Block and Align Power to Monitors" did not need to be performed. The control room operator signed this step off without verifying all steps within Section 5.10.1 had been performed. The nuclear assistant unit operator continued on with the remaining steps of Section 5.10.3 as directed by the control room operator.

When the nuclear assistant unit operator started the alignment for the rad monitors, a spike occurred on 1-RM-90-131 causing an actuation of "B"Train CVI/ABI.The isolation signal was generated due to an improper block of the rad monitors during the realignment of Cntmt Vent Rad Monitors in accordance with SOI-90.02.

Chemistry was notified and a noble grab sample of ABGTS B from Unit 2. Shield Building Vent was obtained and analyzed. No activity was detected. This evaluation documents that as a result of the CVI there was no increase dose to the public.

E1-9

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT, Gaseous Abnormal Releases Release Point: U1 PORV Start Date/Time of Release: 02/22/2008 02:52

==

Description:==

PORV There was an unplanned release from the Steam Generator PORV's between 2/22/2008 and 3/25/2008 when the PORV's where intermittently opened during startup for U1C9. The water source for the Steam Generators during periods when the PORV's were open was the CST A. The CST A sample results showed no gamma activity or tritium. Therefore, there was no increase dose to the public.

El-10

2008 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-2008 Ending: 30-Jun-2008 Est.

Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release (Not Including Tritium, Ci 2.88E-02 9.14E-03 25%

Gases, Alpha)

2. Average Diluted Concentration During PCi/mi 2.54E-09 8.17E-10 Period
3. Percent Of Applicable Limit  %*
1. Total Release Ci 1.11E+03 4.82E+01 18%
2. Average Diluted Concentration During pCi/ml 9.79E-05 4.31 E-06 Period
3. Percent Of Applicable Limit  %
  • C. Dissolved And Entrained Gases
1. Total Release Ci 6.75E-01 7.19E-04 39%
2. Average Diluted Concentration During pCi/ml 5.95E-08 6.43E-1 1 Period
3. Percent Of Applicable Limit  % 2.98E-02 3.21 E-05 D. Gross Alpha Radioactivity
1. Total Release Curies O.OOOE+00** O.OOOE+00 N/A***

E. Total Waste Volume Released Liters 1.14E+08 1.50E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 1.12E+10 1.10E+10 12%

G. Radwaste Volume Released Liters 2.36E+06 1.44E+06 12%

  • h 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.

El-11

2008 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-2008 Ending: 31-Dec-2008 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release (Not Including Ci 7.25E-03 5.56E-03 25%

Tritium, Gases, Alpha)

2. Average Diluted Concentration pCi/ml 2.96E-10 5.43E-10 During Period
3. Percent Of Applicable Limit  % *
1. Total Release Ci 1.19E+02 3.61 E+02 18%
2. Average Diluted Concentration PCi/ml 4.86E-06 3.52E-05 During Period
3. Percent Of Applicable Limit  %

C. Dissolved And Entrained Gases

1. Total Release Ci 2.38E-03 2.46E-03 39%
2. Average Diluted Concentration pCi/ml 9.72E-11 2.40E-10 During Period
3. Percent Of Applicable Limit  % 4.86E-05 1.20E-04 D. Gross Alpha Radioactivity
1. Total Release Ci 0.OOE+00** O.OOE+00 N/A***

E. Total Waste Volume Released Liters 1.56E+08 1.64E+08 2%

(Pre-Dilution)

F. Volume Of Dilution Water Used Liters 2.43E+10 1.01 E+10 12%

G. Radwaste Volume Released Liters 1.84E+06 1.10E+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.

E1-12

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-A Curies Released in Liquid Effluents During the period Starting: 1-Jan-2008 Ending: 31-Mar-2008 CONTINUOUS BATCH TOTAL H-3 1.19E-01 1.11E+03 1.11E+03 FISSION & ACTIVATION PRODUCTS BA-1 39 O.OOE+00 6.74E-06 6.74E-06 CO-57 0.OOE+00 2.35E-05 2.35E-05 CO-58 O.OOE+00 2.83E-03 2.83E-03 CO-60 O.OOE+00 1.36E-03 1.36E-03 CR-51 0.00E+00 9.54E-04 9.54E-04 CS-1 34 0.00E+00 3.92E-04 3.92E-04 CS-137 0.00E+00 4.19E-04 4.19E-04 FE-55 0.OOE+00 1.91 E-02 1.91 E-02 FE-59 0.OOE+00 2.16E-05 2.16E-05 1-131 0.OOE+00 4.76E-05 4.76E-05 1-132 0.00E+00 5.37E-04 5.37E-04 1-133 0.OOE+00 4.82E-06 4.82E-06 MN-54 0.OOE+00 1.87E-04 1.87E-04 MO-99 O.00E+00 1.03E-05 1.03E-05 NB-95 0.OOE+00 3.70E-05 3.70E-05 RH- 06 0.OOE+00 2.34E-05 2.34E-05 RU-1 03 0.OOE+00 1.79E-05 1.79E-05 RU-1 06 O.OOE+00 2.34E-05 2.34E-05 SB-124 0.00E+00 9.51E-06 9.51 E-06 SB-125 0.OOE+00 8.12E-04 8.12E-04 SN- 17M 0.OOE+00 9.54E-06 9.54E-06 SR-89 O.00E+00 1.54E-04 1.54E-04 SR-90 0.00E+00 7.01 E-05 7.01 E-05 TC-99M 0.00 E+00 1.03E-05 1.03E-05 TE-132 0.OOE+00 3.47E-04 3.47E-04 TOTALS 0.OOE+00 2.74E-02 2.74E-02 DISSOLVED AND ENTRAINED GASES KR-85M 0.OOE+00 4.18E-05 4.18E-05 XE-1 31 M 0.OOE+00 1.87E-03 1.87E-03 XE-1 33 0.OOE+00 6.46E-01 6.46E-01 XE-1 33M 0.00E+00 1.05E-02 1.05E-02 XE-1 35 0.OOE+00 1.59E-02 1.59E-02 TOTALS 0.OOE+00 6.75E-01 6.75E-01

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

El-13

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-B Curies Released in Liquid Effluents During the period Starting: 1-Apr-2008 Ending: 30-Jun-2008 CONTINUOUS BATCH TOTAL H-3 8.69E-02 4.82E+01 4.82E+01 FISSION &ACTIVATION PRODUCTS CO-57 0.OOE+00 2.05E-06 2.05E-06 CO-58 0.OOE+00 3.88E-03 3.88E-03 CO-60 0.00E+00 2.47E-04 2.47E-04 CR-51 O.OOE+00 9.45E-05 9.45E-05 CS-137 0.00E+00 1.17E-05 1.17E-05 FE-55 0.OOE+00 4.19E-03 4.19E-03 MN-54 0.o0E+00 7.80E-06 7.80E-06 NB-95 0.OOE+00 1.01 E-05 1.01 E-05 RU-1 03 0.OOE+00 5.65E-06 5.65E-06 SB-1 25 0.OOE+00 5.82E-04 5.82E-04 SR-89 0.00E+00 1.10E-04 1.10E-04 TOTALS 0.OOE+00 9.14E-03 9.14E-03 DISSOLVED AND ENTRAINED GASES XE-1 33 0.OOE+00 6.63E-04 6.63E-04 XE-1 35 0.00E+00 5.59E-05 5.59E-05 TOTALS 0.OOE+00 7.19E-04 7.19E-04

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

E1-14

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-C Curies Released in Liquid Effluents During the period Starting: 1-Jul-2008 Ending: 30-Sep-2008 CONTINUOUS BATCH TOTAL H-3 1.96E-01 1.19E+02 1.19E+02 FISSION & ACTIVATION PRODUCTS CE-141 0.OOE+00 1.59E-06 1.59E-06 CO-58 0.OOE+00 9.73E-04 9.73E-04 CO-60 0.OOE+00 1.55E-04 1.55E-04 CS-1 37 0.OOE+00 9.02E-06 9.02E-06 FE-55 0.QOE+00 2.73E-03 2.73E-03 1-131 O.OOE+00 8.21E-05 8.21 E-05 1-133 0.OOE+00 2.27E-06 2.27E-06 MN-54 0.OOE+00 8.17E-06 8.17E-06 MO-99 0.OOE+00 1.83E-05 1.83E-05 NB-95 O.OOE+00 3.90E-06 3.90E-06 SB- 25 O.OOE+00 3.25E-03 3.25E-03 SN-113 0.OOE+00 1.37E-06 1.37E-06 TC-99M 0.OOE+00 1.83E-05 1.83E-05 TOTALS 0.OOE+00 7.25E-03 7.25E-03 DISSOLVED AND ENTRAINED GASES XE-1 33 0.OOE+00 2.30E-03 2.30E-03 XE-1 35 0.OOE+00 7.61E-05 7.61 E-05 TOTALS 0.OOE+00 2.38E-03 2.38E-03

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

El-15

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 2-D Curies Released in Liquid Effluents During the period Starting: 1-Oct-2008 Ending: 31-Dec-2008 CONTINUOUS BATCH TOTAL H-3 2.66E-01 3.60E+02 3.61 E+02 FISSION & ACTIVATION PRODUCTS CO-57 0.OOE+00 6.74E-06 6.74E-06 CO-58 0.OOE+00 6.77E-04 6.77E-04 CO-60 0.OOE+00 4.31 E-04 4.31 E-04 CS-1 37 0.OOE+00 1.10E-05 1.10E-05 FE-55 0.00E+00 2.50E-03 2.50E-03 MN-54 0.OOE+00 8.43E-06 8.43E-06 SB-122 0.OOE+00 1.41 E-06 1.41 E-06 SB-1 25 O.OOE+0O 1.86E-03 1.86E-03 SR-89 O.OOE+00 6.86E-05 6.86E-05 TOTALS O.OOE+00 5.56E-03 5.56E-03 DISSOLVED AND ENTRAINED GASES KR-85 0.OOE+00 4.65E-04 4.65E-04 XE-133 0.OOE+00 1.90E-03 1.90E-03 XE-135 O.OOE+00 8.82E-05 8.82E-05 TOTALS 0.OOE+00 2.46E-03 2.46E-03

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

El-16

2008 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-2008 Ending: 30-Jun-2008 Est. Tot Type Of Effluent Units Quarter I Quarter 2 Error %

A. Fission & Activation Products

1. Total Release Ci 1.22E+00 6.145E-01 22
2. Average Release Rate For Period pCi/sec 1.56E-01 7.82E-02
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci 1.29E-04 2.33E-05 N/A***
2. Average Release Rate For Period pCi/sec 1.64E-05 2.97E-06
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci O.OOOE+00 4.74E-04 N/A***
2. Average Release Rate For Period pCi/sec O.OOOE+00 6.03E-05
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci Q.OOOE+00 O.OOOE+00 D. Iritium
1. Total Release Ci 2.22E+00 1.23E+01 11
2. Average Release Rate For Period pCi/sec 2.82E-01 1.56E+00
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

2008 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-2008 Ending: 31-Dec-2008 Est. Tot Type Of Effluent Units Quarter 3 Quarter 4 Error %

A. Fission & Activation Products

1. Total Release Ci 1.91E+00 3.85E-02 22
2. Average Release Rate For Period pCi/sec 2.41E-01 4.84E-03
3. Percent Of Applicable Limit  %*
  • B. Radioiodines
1. Total Iodine-131 Ci O.OOOE+00 4.37E-07 ***N/A
2. Average Release Rate For Period pCi/sec O.OOOE+00 5.5E-08
3. Percent Of Applicable Limit  %*
  • C. Particulates
1. Particulates (Half-Lives>8 Days) Ci 1.45E-07 O.OOOE+00 ***N/A
2. Average Release Rate For Period pCi/sec 1.82E-08 O.OOOE+00
3. Percent Of Applicable Limit  %* *
4. Gross Alpha Radioactivity Ci O.OOOE+00 O.OOOE+00 D. Tritium
1. Total Release Ci 2.18E+01 5.71 11
2. Average Release Rate For Period pCi/sec 3.54E+00 7.19E-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.

E1-18

2008 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-2008 Ending: 31-Mar-2008 CONTINUOUS BATCH TOTAL FISSION GASES Xe-133m O.OOE+00 7.51E-04 7.51E-04 Xe-131 m O.OOE+00 8.59E-03 8.59E-03 Kr-85 O.OOE+00 3.59E-02 3.59E-02 Xe-1 35 O.OOE+00 1.03E-02 1.03E-02 Ar-41 O.OOE+00 4.46E-02 4.46E-02 Xe-1 33 4.36E-01 7.25E-01 7.25E-01 TOTALS 4.36E-01 8.25E-01 1.26E+00 IODINES 1-131 1.29E-04 O.OOE+00 1.29E-04 1-132 4.55E-04 O.OOE+00 4.55E-04 1-133 1.95E-05 O.OOE+00 1.95E-05 TOTALS 6.03E-04 O.OOE+00 6.03E-04 PARTICULATES TOTALS O.OOE+00 O.OOE+00 O.OOE+00 H-3 2.22E+00 O.OOE+00 2.22E+00

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

E1-19

2008 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-2008 Ending: 30-Jun-2008 CONTINUOUS BATCH TOTAL FISSION GASES Xe-131 m O.OOE+00 3.84E-04 3.84E-04 Xe-1 35 O.OOE+00 2.74E-03 2.74E-03 Ar-41 O.OOE+00 2.73E-02 2.73E-02 Kr-85 O.OOE+00 1.15E-02 1.15E-02 Xe-133 5.33E-0i 4.01E-02 4.01E-02 TOTALS 5.33E-01 8.20E-02 6.15E-01 IODINES 1-131 2.33E-05 O.OOE+00 2.33E-05 1-133 2.12E-06 O.OOE+00 2.12E-06 TOTALS 2.54E-05 O.OOE+00 2.54E-05 PARTICULATES TOTALS O.OOE+00 O.OOE+00 O.OOE+00 H-3 1.23E+01 O.OOE+00 1.23E+01

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

E1-20

2008 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-2008 Ending: 30-Sep-2008 CONTINUOUS BATCH TOTAL FISSION GASES Kr-85 0.OOE+00 3.25E-03 3.25E-03 Xe-1 35 0.OOE+00 3.74E-02 3.74E-02 Ar-41 O.OOE+00 6.15E-01 6.15E-01 Xe-1 33 0.OOE+00 1.26E+00 1.26E+00 TOTALS 0.OOE+00 1.91 E+00 1.91 E+00 IODINES TOTALS 0.OOE+00 0.OOE+00 O.OOE+00 PARTICULATES Cs-1 34 5.52E-08 O.OOE+00 5.52E-08 Cs-1 37 8.95E-08 O.OOE+00 8.95E-08 TOTALS 1.45E-07 0.OOE+00 1.45E-07 H-3 2.81 E+01 O.OOE+00 2.81E+01

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

El-21

2008 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-2008 Ending: 31-Dec-2008 CONTINUOUS BATCH TOTALS FISSION GASES Xe-1 35 O.OOE+00 7.37E-04 7.37E-04 Kr-85 0.00E+00 2.04E-03 2.04E-03 Ar-41 0.00E+00 1.79E-02 1.79E-02 Xe-133 0.OOE+00 1.79E-02 1.79E-02 TOTALS 0.OOE+00 3.85E-02 3.85E-02 IODINES 1-131 4.37E-07 0.OOE+00 4.37E-07 1-133 5.23E-06 0.OOE+00 5.23E-06 TOTALS 5.67E-06 0.OOE+00 5.67E-06 PARTICU LATES TOTALS 0.OOE+00 0.OOE+00 0.OOE+00 H-3 5.71 E+00 0.OOE+00 5.71 E+00

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

El-22

2008 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 6.82 N/A bottoms, etc. Ci 284.0 +/-25%
b. Dry Active Waste, Compressible Waste m3 466.0 N/A Contaminated Equipment, etc. Ci 0.558 +/-25%
c. Irradiated Components, Control m3 None N/A Rods, etc. Ci None N/A El-23

2008 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 0.024 6.94E-2 C-14 0.026 7.34E-2 Cr-51 0.000 1.12E-4 Mn-54 3.345 9.50E+0 Fe-55 10.112 2.87E+1 Fe-59 0.000 1.48E-4 Co-57 0.234 6.65E-1 Co-58 2.808 7.98E+0 Co-60 10.825 3.07E+1 Ni-63 34.795 9.88E+1 Zn-65 0.001 3.19E-3 Sr-89 0.035 1.OOE-1 Sr-90 0.165 4.69E-1 Zr-95 0.002 4.48E-3 Nb-95 0.001 2.25E-3 Tc-99 0.001 2.76E-3 Ru-103 0.000 3.17E-5 Ru-106 0.007 2.12E-2 Cd-109 0.265 7.53E-1 Sb-1 25 0.857 2.43E+0 Cs-1 34 15.756 4.48E+1 Cs-1 37 20.443 5.80E+1 Ce-144 0.109 3.10E-1 Pu-238 0.000 7.32E-4 Pu-239 0.000 3.26E-4 Pu-240 0.000 3.26E-4 Pu-241 0.198 5.63E-1 Am-241 0.000 2.70E-4 Cm-242 0.000 6.21 E-4 Cm-243 0.000 3.90E-4 Cm-244 0.000 3.89E-4 El-24

2008 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 0.161 8.98E-4 Cr-51 15.785 8.81 E-2 Mn-54 2.677 1.49E-2 Fe-55 6.325 3.53E-2 Fe-59 1.113 6.21E-3 Co-57 0.224 1.25E-3 Co-58 50.660 2.83E-1 Co-60 6.948 3.88E-2 Ni-63 3.794 2.12E-2 Zn-65 0.015 8.54E-5 Sr-89 0.003 1.82E-5 Sr-90 0.002 1.16E-5 Zr-95 3.484 1.94E-2 Nb-95 5.206 2.90E-2 Ru-103 0.499 2.78E-3, Ru-106 0.793 4.43E-3 Sb-125 0.319 1.78E-3 Cs-1 34 0.514 2.87E-3 Cs-1 37 0.526 2.93E-3 La-140 0.021 1.17E-4 Ce-141 0.261 1.45E-3 Ce-144 0.596 3.32E-3 Pu-238 0.000 9.81 E-7 Pu-239 0.001 5.75E-6 Pu-240 0.001 5.75E-6 Pu-241 0.069 3.84E-4 Am-241 0.000 4.02E-7 Cu-242 0.005 2.64E-5 Cm-243 0.000 6.72E-7 Cm-244 0.000 6.71 E-7
c. Irradiated Components None NIA N/A El-25

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 5-B SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste DisDosition Number of Shipments Mode of Transportation. Destination 2 Motor Freight Barnwell Disposal Facility 7 Motor Freight Duratek DAW Processing 2 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 Ifyes, solidification media: N/A E1-26

2008 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 DischargePoints 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 E1-33 through E1-59.

E1-27

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT Radiological Impact MeteorologicalData 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

2008 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 pastthe 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, 7Aand 7B.

E1-29

2008 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 11.0 mR/quarter at onsite (at or near the site boundary) stations and 9.25 mR/quarter at offsite stations or 1.75 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoperation and construction phases of the WBN plant site where the average radiation levels onsite were generally 2-6 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 quarterly TLD measurements indicated that the highest annual TLD reading outside Radiological Control Areas was 88 mrem. Using this value, subtracting an annual background value of approximately 44 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 10 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this report would not add a significant amount to this measured dose. This dose is below the 10 CFR 20 annual limit of 100 mrem.

Total Dose To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from 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

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 6-A Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 2.03E-04 mrad 5 mrad < 1% E/1280 meters Beta Air 3.31E-04 mrad 10 mrad < 1% E/1280 meters Submersion Total Body 9.69E-05 mrem N/A N/A SE/1372 meters Skin 1.89E-04 mrem N/A N/A SE/1372 meters Organ Doses Child/Thyroid 2.70E-03 mrem 7.5 mrem < 1% SSE/1 625 meters Child/Total Body 1.56E-03 mrem 7.5 mrem < 1% SSE/1 625 meters Population Doses Total Body Dose 6.51 E-03 man-rem Maximum Organ Dose (organ) 9.74E-03 man-rem (thyroid)

Second Quarter Individual Doses Pathway Dose Quarterly Percent of Location V.."

__ _Limit Limit External Gamma Air 2.11E-04 mrad 5 mrad < 1% ESE/1250 meters Beta Air 3.76E-04mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 8.37E-05 mrem N/A N/A SE/1 372 meters Skin 1.64E-04 mrem N/A N/A SE/1 372 meters Organ Doses I I Child/Thyroid 1.04E-02 mrem 7.5 mrem < 1% NE/3353 meters Child/Total Body 1.02E-02 mrem 7.5 mrem < 1% NE/3353 meters Population Doses Total Body Dose 3.89E-02 man-rem Maximum Organ Dose (organ) 3.95E-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 (basedon 140 mrem/yr for natural background).

El-31

2008 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 3.88E-03 mrad 5 mrad < 1% ESE/1250 meters Beta Air 2.35E-03 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 2.45E-03 mrem N/A N/A SE/1372 meters Skin 3.82E-03 mrem N/A N/A SE/1 372 meters Organ Doses Child/Thyroid 2.92E-02 mrem 7.5 mrem < 1% ESE/1625 meters Child/Total Body 2.92E-02 mrem 7.5 mrem < 1% ESE/1625 meters Population Doses Total Body Dose 1.02E-01 man-rem Maximum Organ Dose (organ) 1.02E-01 man-rem (thyroid)

Fourth Quarter Individual Doses Pathway Dose Quarterly Percent of Location Limit Limit External Gamma Air 9.81E-05 mrad 5 mrad < 1% ESE/1250 meters Beta Air 5.00E-05 mrad 10 mrad < 1% ESE/1250 meters Submersion Total Body 5.26E-05 mrem N/A N/A SE/1372 meters Skin 8.08E-05 mrem N/A N/A SE/1372 meters Organ Doses I Child/Thyroid 5.15E-03 mrem 7.5 mrem < 1% ESE/4780 meters Child/Total Body 5.15E-03 mrem 7.5 mrem < 1% ESE/4780 meters Population Doses Total Body Dose 1.74E-02 man-rem Maximum Organ Dose (organ) 1.74E-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 (basedon 140 mrem/yr for naturalbackground).

E1-32

2008 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 8.8E-03 1.5 mrem < 1%

Child Bone 1.1E-02 5 mrem < 1%

Child Thyroid 8.1E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 17,778 Population Doses Total Body Dose 4.9E-01 man-rem Maximum Organ Dose (organ) 5.OE-01 man-rem (Bone)

Second Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 8.7E-04 1.5 mrem < 1%

Child Bone 1.OE-03 5 mrem <1%

Child Thyroid 8.4E-04 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 8,989 Population Doses Total Body Dose 4.5E-02 man-rem Maximum Organ Dose (organ) 4.6E-02 man-rem (Bone)

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

E1-33

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT TABLE 7-B Doses from Liquid Effluents Third Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 1.3E-03 1.5 mrem <1%

Child GIT 1.3E-03 5 mrem < 1%

Child Thyroid 1.4E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 14,476 Population Doses Total Body Dose 7.3E-02 man-rem Maximum Organ Dose (organ) 7.4E-02 man-rem (GIT)

Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Quarterly Limit Percent of Limit Child Total Body 3.3E-03 1.5 mrem < 1%

Child Bone 3.4E-03 5 mrem <1%

Child Thyroid 3.3E-03 5 mrem < 1%

Average Riverflow past WBN (cubic feet per second): 14,624 Population Doses Total Body Dose 1.9E-01 man-rem Maximum Organ Dose (organ) 1.9E-01 man-rem (Bone)

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

E1-34

2008 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 9.69E-05 8.37E-05 2.45E-03 5.26E-05 (submersion)

Critical organ dose 1.57E-03 1.02E-02 2.92E-02 5.15E-03 (airborne)

Total body dose 8.80E-03 8.70E-04 1.30E-03 3.30E-03 (liquid)

Maximum organ 1.10E-02 1.OOE-03 1.30E-03 3.40E-03 dose (liquid)

Direct Radiation 0.OOE+00 O.OOE+00 O.OOE+00 O.OOE+00 Dose Total 2.15E-02 1.22E-02 3.43E-02 1.19E-02 Cumulative Total Dose (mrem) 7.98E-02 Annual Dose Limit (mrem) 25 Percent of Limit 0.32%

Thyroid Total body air 9.69E-05 8.37E-05 2.45E-03 5.26E-05 (submersion)

Thyroid dose 2.70E-03 1.04E-02 2.92E-02 5.15E-03 (airborne)

Total body dose 8.80E-03 8.70E-04 1.30E-03 3.30E-03 (liquid)

Thyroid dose 8.10E-03 8.40E-04 1.40E-03 3.30E-03 (liquid) I I II Total 1.97E-02 1.22E-02 3.44E-02 1.18E-02 Cumulative Total Dose (mrem) 7.80E.02 Annual Dose Limit (mrem) 75 Percent of Limit 0.10%

E1-35

2008 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, 2008 - MAR 31, 2008 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 0.138 0.184 0.138 0.000 0.000 0.000 0.459 NNE 0.000 0.000 0.000 0.321 0.184 0.229 0.000 0.000 0.000 0.734 NE 0.000 0.000 0.046 0.229 0.000 0.000 0.000 0.000 0.000 0.275 ENE 0.000 0.000 0.000 0.229 0.138 0.000 0.000 0.000 0.000 0.367 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 0.092 0.000 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.046 0.321 0.138 0.184 0.000 0.000 0.688 SSW 0.000 0.000 0.046 0.000 0.551 0.688 0.000 0.000 0.000 1.285 SW 0.000 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.000 0.184 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 0.000 0.642 0.000 0.000 0.000 0.642 WNW 0.000 0.000 0.000 0.000 0.092 0.826 0.000 0.000 0.000 0.918 NW 0.000 0.000 0.000 0.000 0.000 0.505 0.000 0.000 0.000 0.505 NNW 0.000 0.000 0.000 0.092 0.046 0.413 0.000 0.000 0.000 0.551 SUBTOTAL 0.000 0.000 0.138 1.239 1.698 3.626 0.184 0.000 0.000 6.884 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS A 150 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 150 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 7.80 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-36

2008 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, 2008 - MAR 31, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.092 0.138 0.046 0.000 0.000 0.000 0.275 NNE 0.000 0.000 0.275 0.229 0.092 0.092 0.000 0.000 0.000 0.688 NE 0.000 0.000 0.046 0.184 0.092 0.046 0.000 0.000 0.000 0.367 ENE 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.000 0.000 0.184 E 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 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 0.000 0.046 0.000 0.000 0.000 0.000 0.092 S 0.000 0.000 0.000 0.000 0.092 0.000 0.092 0.046 0.000 0.229 SSW 0.000 0.000 0.046 0.184 0.367 0.092 0.092 0.000 0.000 0.780 SW 0.000 0.000 0.046 0.229 0.184 0.000 0.000 0.000 0.000 0.459 WSW 0.000 0.000 0.000 0.092 0.000 0.046 0.000 0.000 0.000 0.138 W 0.000 0.000 0.000 0.046 0.046 0.229 0.046 0.000 0.000 0.367 WNW 0.000 0.000 0.000 0.000 0.138 0.184 0.000 0.000 0.000 0.321 NW 0.000 0.000 0.000 0.046 0.000 0.275 0.000 0.000 0.000 0.321 NNW 0.000 0.000 0.000 0.046 0.092 0.092 0.000 0.000 0.000 0.229 SUBTOTAL 0.000 0.000 0.597 1.331 1.285 1.101 0.229 0.046 0.000 4.589 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS B 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 6.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-37

2008 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, 2008 - MAR 31, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24,.5 TOTAL N 0.000 0.000 0.046 0.138 0.046 0.000 0.000 0.000 0.000 0.229 NNE 0.000 0.000 0.321 0.321 0.092 0.092 ,0.000 0.000 0.000 0.826 NE 0.000 0.000 0.184 0.046 0.092 0.000 0.000 0.000 0.000 0.321 ENE 0.000 0.046 0.138 0.138 0.000 0.000 0.000 0.000 0.0.00 0.321 E 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.138 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 0.046 0.229 0.184 0.000 0.000 0.000 0.000 0.459 SSW 0.000 0.000 0.184 0.597 0.184 0.275 0.092 0.000 0.000 1.331 SW 0.000 0.000 0.046 0.872 0.092 0.000 0.046 0.000 0.000 1.056 WSW 0.000 0.000 0.000 0.184 0.138 0.092 0.000 0.000 0.000 0.413 W 0.000 0.000 0.000 0.092 0.046 0.138 0.000 0.000 0.000 0.275 WNW 0.000 0.000 0.000 0.184 0.046 0.092 0.000 0.000 0.000 0.321 NW 0.000 0.000 0.046 0.092 0.046 0.184 0.000 0.000 0.000 0.367 NNW 0.000 0.000 0.000 0.092 0.138 0.184 0.000 0.000 0.000 0.413 SUBTOTAL 0.000 0.046 1.285 2.983 1.101 1.056 0.138 0.000 0.000 6.609 TOTAL HOURS OF VALID STABILITY OBSERVAT IONS 2179 TOTAL HOURS OF STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 5.35 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-38

2008 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, 2008 - MAR 31, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 1.010 1.193 1.331 1.056 0.000 0.000 0.000 4.589 NNE 0.000 0.000 0.872 1.147 1.377 0.551 0.000 0.000 0.000 3.947 NE 0.000 0.000 0.321 0.688 0.321 0.000 0.000 0.000 0.000 1.331 ENE 0.000 0.092 0.642 0.184 0.000 0.000 0.000 0.000 0.000 0.918 E 0.000 0.092 0.367 0.000 0.000 0.000 0.000 0.000 0.000 0.459 ESE 0.000 0.138 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.321 SE 0.000 0.092 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.229 SSE 0.000 0.092 0.275 0.138 0.000 0.000 0.000 0.000 0.000 0.505 S 0.000 0.046 0.597 0.275 0.459 0.505 0.826 0.046 0.000 2.754 SSW 0.000 0.000 2.019 2.432 0.964 1.698 0.138 0.000 0.000 7.251 SW 0.000 0.229 1.560 1.010 0.367 0.184 0.046 0.000 0.000 3.396 WSW 0.000 0.138 0.321 0.413 0.046 0.505 0.000 0.000 0.000 1.423 W 0.000 0.092 0.367 0.505 0.872 0.780 0.046 0.000 0.000 2.662 WNW 0.000 0.046 0.321 0.597 1.147 1.193 0.138 0.000 0.000 3.442 NW 0.000 0.046 0.459 0.642 0.826 1.147 0.092 0.000 0.000 3.212 NNW 0.000 0.000 0.688 0.688 0.780 1.147 0.000 0.000 0.000 3.304 SUBTOTAL 0.000 1.101 10.096 9.959 8.490 8.765 1.285 0.046 0.000 39.743 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS D 866 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 866 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 5.65 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-39

2008 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, 2008 - MAR 31, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.092 0.229 0.138 0.046 0.000 0.000 0.000 0.000 0.505 NNE 0.000 0.092 0.459 0.184 0.138 0.000 0.000 0.000 0.000 0.872 NE 0.000 0.000 0.642 0.321 0.000 0.000 0.000 0.000 0.000 0.964 ENE 0.000 0.092 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.321 E 0.000 0.184 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.413 ESE 0.000 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.184 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.184 0.184 0.046 0.000 0.046 0.000 0.000 0.000 0.459 S 0.000 0.184 0.688 0.275 0.413 0.413 0.092 0.000 0.000 2.065 SSW 0.000 0.229 1.331 1.652 0.597 0.826 0.000 0.000 0.000 4.635 SW 0.000 0.413 1.239 0.551 0.046 0.000 0.000 0.000 0.000 2.249 WSW 0.000 0.184 0.734 0.321 0.092 0.000 0.000 0.000 0.000 1.331 W 0.000 0.459 0.964 0.459 0.184 0.092 0.000 0.000 0.000 2.157 WNW 0.000 0.367 0.459 0.229 0.046 0.092 0.000 0.000 0.000 1.193 NW 0.000 0.092 0.459 0.046 0.092 0.000 0.000 0.000 0.000 0.688 NNW 0.000 0.092 0.413 0.138 0.000 0.000 0.000 0.000 0.000 0.642 SUBTOTAL 0.000 2.799 8.352 4.360 1.652 1.469 0.092 0.000 0.000 18.724 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS E 408 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 408 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 3.57 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-40

2008 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, 2008 - MAR 31, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.092 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.321 NNE 0.000 0.092 0.367 0.000 0.000 0.000 0.000 0.000 0.000 0.459 NE 0.000 0.184 0.275 0.046 0.000 0.000 0.000 0.000 0.000 0.505 ENE 0.000 0.229 0.275 0.000 0.000 0.000 0.000 0.000 0.000 0.505 E 0.000 0.138 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.321 ESE 0.000 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.138 SSE 0.000 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.229 S 0.000 0.046 0.367 0.000 0.000 0.000 0.000 0.000 0.000 0.413 SSW 0.000 0.321 0.459 0.229 0.000 0.000 0.000 0.000 0.000 1.010 SW 0.000 0.459 0.321 0.000 0.000 0.000 0.000 0.000 0.000 0.780 WSW 0.000 0.734 0.688 0.000 0.000 0.000 0.000 0.000 0.000 1.423 W 0.000 1.056 0.688 0.092 0.000 0.000 0.000 0.000 0.000 1.836 WNW 0.000 1.193 0.275 0.046 0.000 0.000 0.000 0.000 0.000 1.514 NW 0.000 0.872 0.367 0.000 0.000 0.000 0.000 0.000 0.000 1.239 NNW 0.000 0.459 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.688 SUBTOTAL 0.000 6.241 4.865 0.413 0.000 0.000 0.000 0.000 0.000 11.519 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS F 251 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 251 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 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: 2008/05/05 MEAN WIND SPEED = 1.58 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-41

2008 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, 2008 - MAR 31, 2008 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 0.007 0.505 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.604 NNE 0.004 0.275 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.325 NE 0.005 0.321 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.464 ENE 0.004 0.184 0.138 0.000 0.000 0.000 0.000 0.000 0.000 0.325 E 0.003 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.279 ESE 0.003 0.138 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.232 SE 0.002 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0-.186 SSE 0.001 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 S 0.004 0.184 0.138 0.000 0.046 0.000 0.000 0.000 0.000 0.371 SSW 0.008 0.459 0.184 0.000 0.000 0.000 .0.000 0.000 0.000 0.650 SW 0.013 0.642 0.505 0.000 0.000 0.000 0.000 0.000 0.000 1.161 WSW 0.026 1.239 1.010 0.000 0.000 0.000 0.000 0.000 0.000 2.275 W 0.022 1.056 0.826 0.000 0.000 0.000 0.000 0.000 0.000 1.904 WNW 0.014 0.734 0.459 0.046 0.000 0.000 0.000 0.000 0.000 1.253 NW 0.012 0.688 0.321 0.000 0.000 0.000 0.000 0.000 0.000 1.022 NNW 0.009 0.505 0.275 0.000 0.000 0.000 0.000 0.000 0.000 0.789 SUBTOTAL 0.138 7.343 4.360 0.046 0.046 0.000 0.000 0.000 0.000 11.932 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2179 TOTAL HOURS OF STABILITY CLASS G 260 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 260 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 TOTAL HOURS CALM 3 METEOROLOGICAL FACILITY: Watts Bar Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.51 AND 45.63 METERS WIND SPEED AND DIRECTION MEASURED AT 9.72 METER LEVEL DATE PRINTED: 2008/05/05 MEAN WIND SPEED = 1.40 E1-42

2008 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, 2008 - JUN 30, 2008 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 0.371 0.371 0.000 0.000 0.000 0.787 NNE 0.000 0.000 0.000 0.232 0.278 0.139 0.000 0.000 0.000 0.648 NE 0.000 0.000 0.046 0.093 0.046 0.046 0.000 0.000 0.000 0.232 ENE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.093 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 0.046 0.185 0.139 0.000 0.000 0.000 0.371 SSW 0.000 0.000 0.093 0.093 0.880 0.417 0.000 0.000 0.000 1.482 SW 0.000 0.046 0.093 0.000 0.185 0.046 0.000 0.000 0.000 0.371 WSW 0.000 0.000 0.046 0.000 0.093 0.232 0.000 0.000 0.000 0.371 W 0.000 0.000 0.046 0.000 0.093 0.093 0.000 0.000 0.000 0.232 WNW 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.185 NW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 NNW 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.139 SUBTOTAL 0.000 0.046 0.371 0.648 2.316 1.714 0.000 0.000 0.000 5.095 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS A 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 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: 2008/08/05 MEAN WIND SPEED = 6.79 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS.

El-43

2008 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, 2008 - JUN 30, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.046 0.093 0.046 0.000 '0.000 0.000 0.232 NNE 0.000 0.000 0.000 0.463 0.185 0.046 0.000 0.000 0.000 0.695 NE 0.000 0.000 0.000 0.185 0.185 0.046 0.000 0.000 0.000 0.417 ENE 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 E 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.185 ESE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 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 0.185 0.324 0.093 0.000 0.000 0.000 0.602 SSW 0.000 0.046 0.046 0.695 0.463 0.324 0.139 0.000 0.000 1.714 SW 0.000 0.000 0.046 0.324 0.046 0.046 0.000 0.000 0.000 0.463 WSW 0.000 0.000 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.185 W 0.000 0.000 0.000 0.093 0.232 0.185 0.046 0.000 0.000 0.556 WNW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 NW 0.000 0.000 0.000 0 .093 0.046 0.185 0.000 0.000 0.000 0.324 NNW 0.000 0.000 0.046 0.000 0.139 0.185 0.000 0.000 0.000 0.371 SUBTOTAL 0.000 0.046 0.324 2.455 1.899 1.251 0.185 0.000 0.000 6.160 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS B 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITYi 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: 2008/08/05 MEAN WIND SPEED = 6.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-44

2008 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, 2008 - JUN 30, 2008 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 0.232 0.093 0.139 0.000 0.000 0.000 0.509 NNE 0.000 0.000 0.185 0.324 0.185 0.000 0.000 0.000 0.000 0.695 NE 0.000 0.000 0.232 0.324 0.000 0.000 0.000 0.000 0.000 0.556 ENE 0.,000 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.185 E 0.000 0.000 0.278 0.046 0.046 0.000 0.000 0.000 0.000 0.371 ESE 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 S 0.000 0.000 0.232 0.509 0.139 0.046 0.046 0.000 0.000 0.973 SSW 0.000 0.000 0.232 1.158 0.371 0.278 0.046 0.000 0.000 2.084 SW 0.000 0.000 0.093 0.880 0.371 0.000 0.000 0.000 0.000 1.343 WSW 0.000 0.000 0.046 0.139 0.093 0.093 0.046 0.000 0.000 0.417 W 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.139 WNW 0.000 0.000 0.000 0.139 0.093 0.046 0.000 0.000 0.000 0.278 NW 0.000 0.000 0.046 0.046 0.046 0.139 0.000 0.000 0.000 0.278 NNW 0.000 0.000 0.046 0.139 0.139 0.046 0.000 0.000 0.000 0.371 SUBTOTAL 0.000 0.000 1.714 4.354 1.575 0.787 0.139 0.000 0.000 8.569 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS C 185 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 185 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 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: 2008/08/05 MEAN WIND SPEED = 5.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-45

2008 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, 2008 - JUN 30, 2008 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 0.509 0.695 0.787 0.463 0.000 0.000 0.000 2.455 NNE 0.000 0.000 0.463 0.509 0.324 0.046 0.000 0.000 0.000 1.343 NE 0.000 0.000 0.509 0.000 0.046 0.046 0.000 0.000 0.000 0.602 ENE 0.000 0.232 0.695 0.185 0.000 0.000 0.000 0.000 0.000 1.112 E 0.000 0.046 0.417 0.046 0.046 0.000 0.000 0.000 0.000 0.556 ESE 0.000 0.000 0.278 0.093 0.000 0.046 0.000 0.000 0.000 0.417 SE 0.000 0.139 0.509 0.046 0.000 0.000 0.000 0.000 0.000 0.695 SSE 0.000 0.278 0.509 0.278 0.000 0.000 0.000 0.000 0.000 1.065 S 0.000 0.185 1.112 0.556 0.463 0.741 0.185 0.000 0.000 3.242 SSW 0.000 0.185 2.547 2.177 1.204 1.204 0.139 0.000 0.000 7.457 SW 0.000 0.139 1.528 1.343 0.463 0.046 0.000 0.000 0.000 3.520 WSW 0.000 0.046 0.648 0.602 0.139 0.093 0.000 0.000 0.000 1.528 W 0.000 0.046 0.556 0.509 0.139 0.278 0.046 0.000 0.000 1.575 WNW 0.000 0.046 0.741 0.417 0.232 0.556 0.000 0.000 0.000 1.992 NW 0.000 0.046 0.509 0.417 0.417 0.232 0.000 0.000 0.000 1.621 NNW 0.000 0.000 0.278 0.324 0.695 0.648 0.000 0.000 0.000 1.945 SUBTOTAL 0.000 1.390 11.811 8.198 4.956 4.400 0.371 0.000 0.000 31.126 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS D 672 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 672 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 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: 2008/08/05 MEAN WIND SPEED = 4.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-46

2008 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, 2008 - JUN 30, 2008 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 0.093 0.278 0.509 0.232 0.000 0.000 0.000 0.000 1.112 NNE 0.000 0.046 0.417 0.046 0.046 0.000 0.000 0.000 0.000 0.556 NE 0.000 0.000 0.417 0.000 0.000 0.000 0.000 0.000 0.000 0.417 ENE 0.000 0.139 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.371 E 0.000 0.093 0.139 0.046 0.046 0.000 0.000 0.000 0.000 0.324 ESE 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SE 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SSE 0.000 0.417 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.648 S 0.000 0.139 1.065 0.787 0.463 0.417 0.000 0.000 0.000 2.872 SSW 0.000 0.324 2.038 2.038 0.463 0.417 0.046 0.000 0.000 5.327 SW 0.000 0.278 2.316 0.417 0.185 0.000 0.000 0.000 0.000 3.196 WSW 0.000 0.602 1.065 0.185 0.046 0.000 0.000 0.000 0.000 1.899 W 0.000 0.185 1.019 0.139 0.046 0.000 '0.000 0.000 0.000 1.390 WNW 0.000 0.185 0.648 0.417 0.185 0.046 0.000 0.000 0.000 1.482 NW 0.000 0.185 0.463 0.139 0.046 0.093 0.000 0.000 0.000 0.926 NNW 0.000 0.000 0.278 0.509 0.278 0.046 0.000 0.000 0.000 1.112 SUBTOTAL 0.000 2.825 10.792 5.280 2.038 1.019 0.046 0.000 0.000 22.001 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS E 482 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 475 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 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: 2008/08/05 MEAN WIND SPEED = 3.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-47

2008 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, 2008 - JUN 30, 2008 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 0.093 0.185 0.000 0.000 0.046 0.000 0.000 0.000 0.324 NNE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.046 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.139 ENE 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.185 E 0.000 0.093 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.232 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.324 S 0.000 0.278 0.232 0.046 0.ooo 0.000 0.000 0.000 0.000 0.556 SSW 0.000 0.787 0.787 0.139 0.000 0.000 0.000 0.000 0.000 1.714 SW 0.000 0.973 0.648 0.000 0.000 0.000 0.000 0.000 0.000 1.621 WSW 0.000 0.973 0.741 0.000 0.000 0.000 0.000 0.000 0.000 1.714 W 0.000 1.065 0.880 0.046 0.000 0.000 0.000 0.000 0.000 1.992 WNW 0.000 1.251 0.417 0.000 0.000 0.000 0.000 0.000 0.000 1.667 NW 0.000 0.556 0.834 0.000 0.000 0.000 0.000 0.000 0.000 1.390 NNW 0.000 0.232 0.602 0.093 0.000 0.000 0.000 0.000 0.000 0.926 SUBTOTAL 0.000 6.762 5.836 0.417 0.000 0.046 0.000 0.000 0.000 13.062 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS F 289 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 282 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 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: 2008/08/05 MEAN WIND SPEED = 1.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-48

2008 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, 20 JUN 30, 2008 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 0.185 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.326 NNE 0.001 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NE 0.001 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.187 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.001 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.187 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.001 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 SSE 0.001 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.140 S 0.003 0.278 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.513 SSW 0.006 0.695 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.933 SW 0.008 0.880 0.371 0.000 0.000 0.000 0.000 0.000 0.000 1.259 WSW 0.017 1.482 1.065 0.000 0.000 0.000 0.000 0.000 0.000 2.564 W 0.018 2.038 0.602 0.000 0.000 0.000 0.000 0.000 0.000 2.658 WNW 0.019 2.316 0.509 0.000 0.000 0.000 0.000 0.000 0.000 2.844 NW 0.012 1.251 0.509 0.000 0.000 0.000 0.000 0.000 0.000 1.772 NNW 0.002 0.185 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.373 SUBTOTAL 0.093 9.773 4.122 0.000 0.000 0.000 0.000 0.000 0.000 13.988 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2173 TOTAL HOURS OF STABILITY CLASS G 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 302 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 2 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: 2008/08/05 MEAN WIND SPEED = 1.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-49

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY.WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Watts Bar Nuclear Plant JUL 1, 2008 - SEP 30, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.045 0.091 0.272 0.000 0.000 0.000 0.408 NNE 0.000 0.000 0.000 0.136 0.498 0.589 0.000 0.000 0.000 1.223 NE 0.000 0.000 0.000 0.091 0.362 0.181 0.000 0.000 0.000 0 .634 ENE 0.000 0.000 0.000 0.453 0.362 0.091 0.000 0.000 0.000 0.906 E 0.000 0.000 0.000 0.091 0.045 0.000 0.000 0.000 0.000 0.136 ESE 0.000 0.000 0.045 0.091 0.000 0.000 0.000 0.000 0.000 0.136 SE 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.000 0.045 0.045 0.136 0.000 0.000 0.000 0.000 0.227 S 0.000 0.000 0.000 0.136 0.091 0.091 0.000 0.000 0.000 0.317 SSW 0.000 0.000 0.000 0.317 0.136 0.000 0.000 0.000 0.000 0.453 SW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 WSW 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.136 NW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 NNW 0.000 0.000 0.000 0.000 0.045 0.091 0.000. 0.000 0.000 0.136 SUBTOTAL 0.000 0.000 0.091 1.495 1.994 1.359 0.000 0.000 0.000 4.939 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS A 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 6.37 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-50

2008 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, 2008 - SEP 30, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.045 0.000 0.181 0.136 0.000 0.000 0.000 0.362 NNE 0.000 0.000 0.000 0.317 0.498 0.408 0.000 0.000 0.000 1.223 NE 0.000 0.000 0.000 0.408 0.091 0.000 0.000 0.000 0.000 0.498 ENE 0.000 0.000 0.000 0.272 0.091 0.000 0.000 0.000 0.000 0.362 E 0.000 0.000 0.000 0.181 0.045 0.000 0.000 0.000 0.000 0.227 ESE 0.000 0.000 0.000 0.136 0.091 0.000 0.000 0.000 0.000 0.227 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 0.091 0.045 0.000 0.000 0.000 0M000 0.136 S 0.000 0.000 0.000 0.408 0.045 0.045 0.000 0.000 0.000 0.498 SSW 0.000 0.000 0.045 0.725 0.227 0.000 0.000 0.000 0.000 0.997.

SW 0.000 0.000 0.000 0.136 '0.000 0.000 0.000 0.000 0.000 0.136 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 WNW 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.045 NW 0.000 0.000 0.000 0.045 0.000 0.045 0.000 0.000 0.000 0.091 NNW 0.000 0.000 0.000 0.227 0.181 0.181 0.000 0.000 0.000 0.589 SUBTOTAL 0.000 0.000 0.136 2.945 1.495 0.861 0.000 0.000 0.000 5.437 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS B 120 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 120 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 5.61 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-51

2008 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, 2008 - SEP 30, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.045 0.362 0.317 0.045 0.000 0.000 0.000 0.770 NNE 0.000 0.000 0.091 0.498 0.136 0.181 0.000 0 .000 0.000 0.906 0.000 NE 0.000 0.000 0.045 0.453 0.045 0.091 0.000 0.000 0.634 ENE 0.000 0.000 0.045 0.045 0.000 0.045 0.000 0.000 0.000 0.136 E 0.000 0.000 0.000 0.453 0.000 0.000 0.000 0.000 0.000 0.453 ESE 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.000 0.136 SE 0.000 0.000 0.091 0.362 0.045 0.000 0.000 0.000 0.000 0.498 SSE 0.000 0.000 0.000 0.181 0.136 0.000 0.000 0.000 0.000 0.317 S 0.000 0.000 0.091 0.634 0.000 0.000 0.000 0.000 0.000 0.725 SSW 0.000 0.000 0.045 0.544 0.045 0.000 .0.000 0.000 0.000 0.634 SW 0.000 0.000 0.091 0.272 0.091 0.000 0.000 0.000 0.000 0.453 WSW 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.045 W 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.091 WNW 0.000 0.000 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.091 NW 0.000 0.000 0.000 0.000 0.136 0.000 0.000 0.000 0.000 0.136 NNW 0.000 0.000 0.000 0.227 0.136 0.091 0.000 0.000 0.000 0.453 SUBTOTAL 0.000 0.000 0.589 4.304 1.133 0.453 0.000 0.000 0.000 6.479 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS C 143 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 143 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 4.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED'NUMBERS E1-52

2008 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, 2008 - SEP 30, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.045 0.498 1.042 1.042 0.317 0.000 0.000 0.000 2.945 NNE 0.000 0.045 0.362 1.405 0.952 0.498 0.000 0.000 0.000 3.262 NE 0.000 0.045 0.906 1.223 0.453 0.408 0.000 0.000 0.000 3.036 ENE 0.000 0.091 1.087 0.272 0.091 0.227 0.000 0.000 0.000 1.767 E 0.000 0.045 0.544 0.362 0.045 0.091 0.000 0.000 0.000 1.087 ESE 0.000 0.091 0.997 0.317 0.000 0.000 0.000 0.000 0.000 1.405 SE 0.000 0.136 0.634 0.227 0.000 0.000 0.000 0.000 0.000 0.997 SSE 0.000 0.136 0.952 0.408 0.000 0.000 0.000 0.000 0.000 1.495 S 0.000 0.136 1.767 0.680 0.045 0.317 0.000 0.000 0.000 2.945 SSW 0.000 0.136 2.175 0.816 0.091 0.136 0.000 0.000 0.000 3.353 SW 0.000 0.045 0.770 0.453 0.136 0.000 0.000 0.000 0.000 1.405 WSW 0.000 0.091 0.589 0.136 0.000 0.000 0.000 0.000 0.000 0.816 W 0.000 0.136 0.181 0.091 0.045 0.000 0.000 0.000 0.000 0.453 WNW 0.000 0.045 0.408 0.181 0.136 0.045 0.000 0.000 0.000 0.816 NW 0.000 0.045 0.181 0.136 0.136 0.045 0.000 0.000 0.000 0.544 NNW 0.000 0.045 0.589 0.498 0.453 0.045 0.000 0.000 0.000 1.631 SUBTOTAL 0.000 1.314 12.642 8.246 3.625 2.130 0.000 0.000 0.000 27.957 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS D 617 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 617 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 3.98 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-53

2008 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, 2008 - SEP 30, 2008 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 0.181 0.272 1.133 0.227 0.000 0.000 0.000 0.000 1.812 NNE 0.000 0.091 0.408 0.272 0.091 0.000 0.000 0.000 0.000 0.861 NE 0.000 0.227 0.317 0.136 0.045 0.000 0.045 0.000 0.000 0.770 ENE 0.000 0.272 0.544 0.000 0.000 0.000 0.000 0.000 0.000 0.816 E 0.000 0.227 0.408 0.045 0.000 0.000 0.000 0.000 0.000 0.680 ESE 0.000 0.091 0.272 0.000 0.000 0.000 0.000 0.000 0.000 0.362 SE 0.000 0.181 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.317 SSE 0.000 0.362 0.272 0.227 0.000 0.000 0.000 0.000 0.000 0.861 S 0.000 0.453 0.997 0.136 0.045 0.000 0.000 0.000 0.000 1.631 SSW 0.000 0.544 1.541 0.408 0.045 0.045 0.000 0.000 0.000 2.583 SW 0.000 0.362 0.816 0.045 0.000 0.000 0.000 0.000 0.000 1.223 WSW 0.000 0.680 0.725 0.045 0.000 0.000 0.000 0.000 0.000 1.450 W 0.000 1.087 0.634 0.045 0.000 0.000 0.000 0.000 0.000 1.767 WNW 0.000 1.087 0.453 0.136 0.000 0.000 0.000 0.000 0.000 1.676 NW 0.000 0.680 0.634 0.091 0.000 0.000 0.000 0.000 0.000 1.405 NNW 0.000 0.136 0.498 0.997 0.181 0.045 0.000 0.000 0.000 1.858 SUBTOTAL 0.000 6.661 8.926 3.715 0.634 0.091 0.045 0.000 0.000 20.072 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS E 443 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 443 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 2.42 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-54

2008 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, 2008 - SEP 30, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.004 0.408 0.498 0.000 0.000 0.000 0.000 0.000 0.000 0.911 NNE 0.003 0.317 0.408 0.045 0.000 0.000 0.000 0.000 0.000 0.774 NE 0.003 0.317 0.272 0.045 0.000 0.000 0.000 0.000 0.000 0.637 ENE 0.002 0.181 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.364 E 0.002 0.227 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.410 ESE 0.001 0.091 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SE 0.000 0.045 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.002 0.045 0.272 0.000 0.000 0.000 0.000 0.000 0.000 0.319 S 0.002 0.136 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.319 SSW 0.003 0.408 0.227 0.000 0.000 0.000 0.000 0.000 0.000 0.637 SW 0.005 0.680 0.453 0.000 0.000 0.000 0.000 0.000 0.000 1.138 WSW 0.008 0.952 0.680 0.000 0.000 0.000 0.000 0.000 0.000 1.639 W 0.014 1.858 1.042 0.000 0.000 0.000 0.000 0.000 0.000 2.914 WNW 0.021 2.855 1.586 0.000 0.000 0.000 0.000 0.000 0.000 4.462 NW 0.015 2.084 1.042 0.091 0.000 0.000 0.000 0.000 0.000 3.232 NNW 0.006 0.634 0.634 0.000 0.045 0.000 0.000 0.000 0.000 1.320 SUBTOTAL 0.091 11.237 7.748 0.181 0.045 0.000 0.000 - 0.000 0.000 19.302 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS F 426 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 426 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 TOTAL HOURS CALM 2 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: 2008/11/20 MEAN WIND SPEED = 1.47 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-55

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Watts Bar Nuclear Plant JUL 1, 2008 - SEP 30, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.002 0.181 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.365 NNE 0.002 0.181 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.273 NE 0.002 0.317 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.365 ENE 0.002 0.227 0.181 0.000 0.000 0.000 0.000 0.000 0.000 0.410 E 0.002 0.317 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.365 ESE 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.001 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.001 0.136 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.137 SSW 0.001 0.136 0.045 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SW 0.003 0.408 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.501 WSW 0.007 0.680 0.453 0.000 0.000 0.000 0.000 0.000 0.000 1.139 W 0.014 1.903 0.544 0.000 0.000 0.000 0.000 0.000 0.000 2.461 WNW 0.022 2.447 1.359 0.000 0.000 0.000 0.000 0.000 0.000 3.828 NW 0.026 2.990 1.586 0.000 0.000 0.000 0.000 0.000 0.000 4.603 NNW 0.006 0.680 0.317 0.000 0.000 0.000 0.000 0.000 0.000 1.003 SUBTOTAL 0.091 10.739 4.984 0.000 0.000 0.000 0.000 0.000 0.000 15.813 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2207 TOTAL HOURS OF STABILITY CLASS G 349 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 349 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2207 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: 2008/11/20 MEAN WIND SPEED = 1.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-56

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT INT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR 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, 2008 - DEC 31, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.046 0.046 0.366 0.000 0.000 0.000 0.504 NNE 0.000 0.000 0.000 0.000 0.137 0.137 0.000 0.000 0.000 0.275 NE 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.092 ENE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.046 0.504 0.046 0.000 0.000 0.000 0.595 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 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.183 0.000 0.000 0.000 0.183 NNW 0.000 0.000 0.000 0.000 0.046 0.137 0.000 0.000 0.000 0.183 SUBTOTAL 0.000 0.000 0.092 0.183 1.007 0.916 0.000 0.000 0.000 2.198 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS A 48 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 48 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 7.15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-57

2008 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, 2008 - DEC 31, 2008 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.092 0.183 0.275 0.046 0.000 0.000 0.595 NNE 0.000 0.000 0.000 0.183 0.092 0.183 0.000 0.000 0.000 0.458 NE 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.137 ENE 0.000 0.000 0.092 0.092 0.000 0.000 0.000 0.000 0.000 0.183 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 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 0.046 0.046 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.000 0.275 0.275 0.046 0.000 0.000 0.000 0.595 SW 0.000 0.000 0.046 0.092 0.046 0.000 0.000 0.000 0.000 0.183 WSW 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 W 0.000 0.000 0.000 0.000 0.092 0.000 0,000 0.000 0.000 0.092 WNW 0.000 0.000 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.137 NW 0.000 0.000 0.046 0.000 0.000 0.183 0.000 0.000 0.000 0.229 NNW 0.000 0.000 0.000 0.092 0.046 0.137 0.000 0.000 0.000 0.275 SUBTOTAL 0.000 0.000 0.229 1.007 0.916 0.962 0.046 0.000 0.000 3.159 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS B 69 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 69 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED 6.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-58

2008 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, 2008 - DEC 31, 2008 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 0.321 0.137 0.321 0.000 0.000 0.000 0.824 NNE 0.000 0.000 0.137 0.366 0.366 0.092 0.000 0.000 0.000 0.962 NE 0.000 0.000 0.137 0.137 0.092 0.000 0.000 0.000 0.000 0.366 ENE 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.137 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 0.092 0.000 0.000 0.000 0.000 0.000 0.092 SE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.000 0.046 0.092 0.046 0.000 0.000 0.000 0.000 0.183 S 0.000 0.000 0.092 0.137 0.046 0.046 0.000 0.000 0.000 0.321 SSW 0.000 0.000 0.046 0.321 0.046 0.046 0.000 0.000 0.000 0.458 SW 0.000 0.000 0.000 0.366 0.000 0.046 0.000 0.000 0.000 0.412 WSW 0.000 0.000 0.046 0.046 0.046 0.092 0.000 0.000 0.000 0.229 W 0.000 0.000 0.000 0.137 0.046 0.046 0.000 0.000 0.000 0.229 WNW 0.000 0.000 0.000 0.000 0.046 0.183 0.000 0.000 0.000 0.229 NW 0.000 0.000 0.000 0.046 0.183 0.321 0.000 0.000 0.000 0.549 NNW 0.000 0.000 0.092 0.275 0.137 0.275 0.000 0.000 0.000 0.778 SUBTOTAL 0.000 0.000 0.778 2.473 1.190 1.465 0.000 0.000 0.000 5.907 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS C 129 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 129 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 5.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-59

2008 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, 2008 - DEC 31, 2008 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.092 0.962 1.145 1.053 1.007 0.137 0.000 0.000 4.396 NNE 0.000 0.046 1.236 1.832 1.053 0.687 0.046 0.000 0.000 4.899 NE 0.000 0.000 0.870 0.641 0.275 0.183 0.000 0.000 0.000 1.969 ENE 0.000 0.183 0.733 0.229 0.046 0.000 0.000 0.000 0.000 1.190 E 0.000 0.000 0.366 0.000 0.000 0.000 0.000 0.000 0.000 0.366 ESE 0.000 0.046 0.366 0.046 0.000 0.000 0.000 0.000 0.000 0.458 SE 0.000 0.092 0.229 0.092 0.092 0.046 0.000 0.000 0.000 0.549 SSE 0.000 0.137 0.458 0.137 0.046 0.000 0.000 0.000 0.000 0.778 S 0.000 0.183 0.962 0.412 0.092 0.229 0.046 0.000 0.000 1.923 SSW 0.000 0.229 1.786 1.557 0.962 0.733 0.046 0.000 0.000 5.311 SW 0.000 0.229 1.282 0.687 0.366 0.000 0.000 0.000 0.000 2.564 WSW 0.000 0.366 0.458 0.412 0.046 0.000 0.000 0.000 0.000 1.282 W 0.000 0.137 1.053 0.229 0.137 0.229 0.000 0.000 0.000 1.786 WNW 0.000 0.046 0.183 0.458 0.549 0.458 0.000 0.000 0.000 1.694 NW 0.000 0.046 0.229 0.595 1.145 0.870 0.046 0.000 0.000 2.930 NNW 0.000 0.000 0.687 0.321 0.595 1.603 0.275 0.000 0.000 3.480 SUBTOTAL 0.000 1.832 11.859 8.791 6.456 6.044 0.595 0.000 0.000 35.577 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS D 777 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 777 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 4.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-60

2008 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, 2008 - DEC 31, 2008 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 0.458 0.504 0.321 0.000 0.000 0.000 0.000 1.328 NNE 0.000 0.046 0.549 0.275 0.092 0.000 0.000 0.000 0.000 0.962 NE 0.000 0.137 0.733 0.229 0.000 0.000 0.000 0.000 0.000 1.099 ENE 0.000 0.046 0.824 0.137 0.000 0.000 0.000 0.000 0.000 1.007 E 0.000 0.137 0.366 0.000 0.000 0.000 0.000 0.000 0.000 0.504 ESE 0.000 0.000 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.229 SE 0.000 0.092 0.092 0.183 0.000 0.000 0.000 0.000 0.000 0.366 SSE 0.000 0.092 0.137 0.092 0.000 0.000 0.000 0.000 0.000 0.321 S 0.000 0.275 0.733 0.183 0.183 0.275 0.000 0.000 0.000 1.648 SSW 0.000 0.137 1.465 1.374 0.595 0.321 0.046 0.000 0.000 3.938 SW 0.000 0.595 1.190 0.366 0.046 0.000 0.000 0.000 0.000 2.198 WSW 0.000 0.504 0.778 0.046 0.092 0.000 0.000 0.000 0.000 1.419 W 0.000 0.549 1.007 0.229 0.137 0.000 0.000 0.000 0.000 1.923 WNW 0.000 0.412 1.236 0.366 0.046 0.000 0.000 0.000 0.000 2.060 NW 0.000 0.321 1.053 0.275 0.229 0.137 0.000 0.000 0.000 2.015 NNW 0.000 0.137 0.412 0.504 0.595 0.275 0.000 0.000 0.000 1.923 SUBTOTAL 0.000 3.526 11.264 4.762 2.335 1.007 0.046 0.000 0.000 22.940 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS E 501 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 501 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 3.29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-61

2008 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, 2008 - DEC 31, 2008 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 0.275 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.366 NNE 0.000 0.092 0.229 0.046 0.000 0.000 0.000O 0.000 0.000 0.366 NE 0.000 0.092 0.275 0.046 0.000 0.000 0.000 0.000 0.000 0.412 ENE 0.000 0.137 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.229 E 0.000 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.183 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.183 S 0.000 0.137 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.229 SSW 0.000 0.092 0.366 0.092 0.000 0.137 0.000 0.000 0.000 0.687 SW 0.000 0.275 0.412 0.000 0.000 0.000 0.000 0.000 0.000 0.687 WSW 0.000 0.504 1.099 0.000 0.000 0.000 0.000 0.000 0.000 1.603 W 0.000 1.694 1.282 0.000 0.000 0.000 0.000 0.000 0.000 2.976 WNW 0.000 2.427 1.328 0.000 0.000 0.000 0.000 0.000 0.000 3.755 NW 0.000 1.328 1.419 0.046 0.000 0.000 0.000 0.000 0.000 2.793 NNW 0.000 0.229 0.412 0.092 0.046 0.000 0.000 0.000 0.000 0.778 SUBTOTAL 0.000 7.647 7.234 0.321 0.046 0.137 0.000 0.000 0.000 15.385 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS F 336 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 336 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 1.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-62

2008 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, 2008 - DEC 31, 2008 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 0.137 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.276 NNE 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.092 NE 0.001 0.183 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.230 ENE 0.001 0.183 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.230 E 0.000 0.046 0.000 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 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SSE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.001 0.000 0.183 0.000 0.000 0.000 0.000 0.000 0.000 0.184 SSW 0.001 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.184 SW 0.002 0.275 0.321 0.000 0.000 0.000 0.000 0.000 0.000 0.597 WSW 0.006 0.916 0.870 0.000 0.000 0.000 0.000 0.000 0.000 1.791 W 0.009 1.786 1.099 0.046 0.000 0.000 0.000 0.000 0.000 2.939 WNW 0.013 2.152 1.877 0.000 0.000 0.000 0.000 0.000 0.000 4.042 NW 0.010 2.152 0.916 0.000 0.000 0.000 0.000 0.000 0.000 3.077 NNW 0.003 0.733 0.275 0.000 0.000 0.000 0.000 0.000 0.000 1.010 SUBTOTAL 0.046 8.700 6.044 0.046 0.000 0.000 0.000 0.000 0.000 14.835 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2184 TOTAL HOURS OF STABILITY CLASS G 324 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 324 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2184 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: 2009/02/26 MEAN WIND SPEED = 1.41 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-63

2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 1 Deviations from ODCM Controls/Surveillance Requirements 07/07/2008 1/2.1.1 Required ERCW grab sample for 0-RE-90-133/140 inoperability was not obtained Table 1.1-1 within the required time. ERCW radiation monitors 0-RE-90-133/140 were not Item 2.a declared inoperable when breaker 30 on vital instrument power board 1-1 was Action C tagged for maintenance. Chemistry was not notified by Operations when it was discovered that the breaker supplied power to the common sample pump on 0-RE-90-133/140.

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2008 WATTS BAR NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT ATTACHMENT 2 Radioactive Effluent Monitoring Instrumentation Inoperable for Greater than 30 days 1/2.1.2 Unit 2 Shield Building Exhaust Radiation Monitor 2-RE-90-400 was inoperable from 12/16/2007 Control 1.1.2 December 16, 2007 04:40 until January 18, 2008 16:52. The inoperable period was Action B greater than 30 days due to the replacement the radiation monitor sample pump.

Table 1.1-2 During this period compensatory sampling carts were installed and noble gas grab Item 3 a.& c. samples were obtained during any releases.

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