Text

Annual Radioactive Effluent Release Report (ARERR)
	ML051230358
Person / Time
Site:	Sequoyah
Issue date:	04/29/2005
From:	Pace P; Tennessee Valley Authority
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML051230358 (70)
	v • d • e

April 29, 2005 U.S. Nuclear Regulatory Commission 10 CFR 72.44 ATTN: Document Control Desk Washington, D.C. 20555 Gentlemen:

In the Matter of ) Docket Nos. 50-327 Tennessee Valley Authority ) 50-328 SEQUOYAH NUCLEAR PLANT - 2004 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT (ARERR)

Enclosed is the ARERR for the period of January 1 to December 31, 2004. This report (Enclosure 1) is being submitted in accordance with Sequoyah Technical Specification (TS) 6.9.1.8 and 10 CFR 72.44(d)(3).

The Offsite Dose Calculation Manual requires that a Radiological Impact Assessment be submitted for the same reporting period. The assessment is included as Enclosure 2.

There were no revisions to the Offsite Dose Calculation Manual during the year 2004.

Please direct questions concerning this issue to me at (423) 843-7170 or J. D. Smith at (423) 843-6672.

Sincerely, Original signed by James D. Smith for:

P. L. Pace Manager, Site Licensing and Industry Affairs Enclosures

U.S. Nuclear Regulatory Commission Page 2 April 29, 2005 PLP:JDS:JWP:KTS Enclosures cc (Enclosures):

ATTN: Document Control Desk Director, Spent Fuel Project Office Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

ENCLOSURE 1 ANNUAL RADIOACTIVE EFFLUENT RELEASE REPORT SEQUOYAH NUCLEAR PLANT 2004

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SUPPLEMENTAL INFORMATION I. REGULATORY LIMITS A. Gaseous Effluents

1. Dose rates due to radioactivity released in gaseous effluents from the site to areas at and beyond the unrestricted area boundary shall be limited to the following:

a. Noble gases: - Less than or equal to 500 mrem/year to the total body.

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

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

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

2. Air dose due to noble gases released in gaseous effluents to areas at and beyond the unrestricted area boundary shall be limited to the following:

a. Less than or equal to 5 mrad for gamma radiation and less than or equal to 10 mrad for beta radiation during any calendar quarter.

b. Less than or equal to 10 mrad for gamma radiation and less than or equal to 20 mrad for beta radiation during any calendar year.

3. Dose to a member of the public from Iodine-131, Iodine-133, tritium, and 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 annual average concentration of radioactivity released in liquid effluents to unrestricted areas shall be limited to the concentrations specified in Title 10 of the Code of Federal Regulations, Part 20 E1-1 1

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SUPPLEMENTAL INFORMATION (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 microcuries/milliliter (µCi/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.

II. EFFLUENT CONCENTRATION LIMITS A. Liquids

1. The Effluent Concentration Limits (ECL) for liquids are those listed in 10 CFR 20, Appendix B, Table 2, Column 2. For dissolved and entrained gases, the ECL of 2.0E-04 µCi/ml is applied. This ECL is based on the Xe-135 concentration in air (submersion dose) converted to an equivalent concentration in water as discussed in the International Commission on Radiological Protection (ICRP), Publication 2.

These values are used as applicable limits for liquid and gaseous effluents.

B. Gaseous

1. The maximum permissible dose rates for gaseous releases are defined in plant Offsite Dose Calculation Manual (ODCM).

a. Noble gas dose rate at the unrestricted area boundary:

- Less than or equal to 500 mrem/year to the total body.

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

b. Iodine-131, Iodine-133, tritium, and particulates with half-lives greater than eight days dose rate at the unrestricted area boundary:

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

These values are used as applicable limits for liquid and gaseous effluents.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SUPPLEMENTAL INFORMATION III. AVERAGE ENERGY Sequoyah'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. The use of dose rate is in accordance with NUREG-0133, Preparation of Radiological Effluent Technical Specifications for Nuclear Power Plants. Since the release rate is not used for effluent control, the average energy discussed in Regulatory Guide 1.21 (used for release rate control) is not included in this report.

IV. MEASUREMENTS AND APPROXIMATIONS OF TOTAL RADIOACTIVITY NOTE: Every effort is made to ensure that effluent releases from Sequoyah are conducted such that all ODCM Lower Limit of Detection (LLD) values are met. Whenever an analysis does not identify a radioisotope, an "0.00E-01 Ci" is recorded for the release. This does not necessarily mean that no activity was released for that particular radionuclide, but that the concentration was below the ODCM and analysis LLD. Refer to Tables A and B for estimates of these typical LLD values.

A. Fission and Activation Gases Airborne effluent gaseous activity is continuously monitored and recorded.

Additional grab samples from the shield building, auxiliary building, service building, and condenser vacuum exhausts are taken and analyzed at least monthly to determine the quantity of noble gas activity released for the month based on the average vent flow rates recorded for the sample period. Also, noble gas samples are collected and evaluated for the shield and auxiliary buildings following startup, shutdown, or rated thermal power change exceeding 15 percent within one hour (sampling is only required if the dose equivalent I-131 concentration in the primary coolant or the noble gas activity monitor shows that the containment activity has increased more than a factor of 3).

The quantity of noble gases released through the shield and auxiliary building exhausts due to purging or venting of containment and releases of waste gas decay tanks are also determined.

The total noble gas activity released for the month is then determined by summing of the activity released from each vent for the sampling periods.

B. Iodines and Particulates Iodine and particulate activity is continuously sampled. Charcoal and particulate samples are taken from the shield and auxiliary building exhausts and analyzed at least weekly to determine the total activity released from the plant based on the average vent flow rates recorded for sampling period.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SUPPLEMENTAL INFORMATION Also, particulate and charcoal samples are taken from the auxiliary and shield building exhausts once per 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months for 2 days following startup, shutdown, or a rated thermal power change exceeding 15 percent within 1 hour1.157407e-5 days 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months . The quantity of iodine and particulate released from each vent during each sampling period is then determined using the average vent flow rates recorded for the sampling period and activity concentration.

The total particulate and iodine activity released for the month is then determined by summing all activity released from the shield and auxiliary building exhausts for the sampling periods.

C. Liquid Effluents Batch (Radwaste and during periods of primary to secondary leakage, condensate regenerants to cooling tower blowdown)

Total gamma isotopic activity concentrations are determined on each batch of liquid effluent prior to release. The total activity of a released batch is determined by summing each nuclide's concentration and multiplying by the total volume discharged. The total activity released during a month is then determined by summing the activity content of each batch discharged during the month.

Continuous Releases and Periodic Continuous Releases (Condensate regenerants, turbine building sump, and steam generator blowdown)

Total gamma isotopic activity concentration is determined daily on a composite sample from the condensate system and turbine building sump and weekly for steam generator blowdown. The total activity of the continuous release is determined by summing each nuclide's concentration and multiplying by the total volume discharged. The total activity released during the month is then determined by summing the activity content of each daily and weekly composite for the month.

V. BATCH Value 1st 2nd Half Half Units A. Liquid (Radwaste only)

1. Number of releases 54 68 Each

2. Total time period of releases 8214 11635 Minutes

3. Maximum time period of release 265 257 Minutes

4. Average time period of releases 152.11 171.10 Minutes

5. Minimum time period for release 60.0 108.0 Minutes

6. Average dilution stream flow during 29303.5 50924.5 CFS release periods E1-4

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SUPPLEMENTAL INFORMATION B. Gaseous (Batches only, containment purges, containment vents, and waste decay tanks)

1. Number of releases 90 101 Each

2. Total time period of releases 42008 45503 Minutes

3. Maximum time period for release 1410 6056 Minutes

4. Average time period for releases 466.76 450.52 Minutes

5. Minimum time period for release 30 25 Minutes VI. ABNORMAL RELEASES Value 1st 2nd Half Half Units A. Liquid Number of Releases 0 0 Total Activity Released 0.00E-01 0.00E-01 Ci B. Gaseous Number of Releases 0 0 Total Activity Released 0.00E-01 0.00E-01 Ci E1-5

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES A. Fission and 1st 2nd 3rd 4th Activation Products Unit Qtr Qtr Qtr Qtr %Error

1. Total Released Curies 7.03E-02 2.44E-02 3.40E-02 1.10E-01 18%

2. Average diluted concentration µCi/ml 4.16E-08 1.54E-08 2.02E-08 6.01E-08 during period

3. Percent of % * * *

Applicable Limit B. Tritium

1. Total Released Curies 1.36E+02 2.94E+02 4.24E+02 5.95E+02 18%

2. Average diluted concentration µCi/ml 8.05E-05 1.86E-04 2.53E-04 3.25E-04 during period

3. Percent of % * * *

Applicable Limit C. Dissolved and Entrained Gases

1. Total Released Curies 1.64E-03 3.01E-04 1.54E-03 1.99E-02 39%

2. Average diluted concentration µCi/ml 9.70E-10 1.91E-10 9.17E-10 1.09E-08 during period

3. Percent of % 4.85E-04 9.55E-05 4.59E-04 5.45E-03 Applicable Limit D. Gross Alpha

1. Total Released Curies 0.00E-01 0.00E-01 0.00E-01 0.00E-01 E. Volume of Waste Released Liters 3.87E+07 2.87E+07 4.58E+07 6.17E+07 4%

F. Volume of Dilution Water for Period Liters 1.65E+09 1.55E+09 1.63E+09 1.77E+09 4%

Applicable limits are expressed in terms of dose. See Tables 1 thru 4.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.00E-01)

Required by ODCM/Others Fission and Activation Products Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 1st 2nd 1st 2nd

1. Silver-110M Ci 0.00E-01 0.00E-01 7.10E-03 1.61E-03

2. Cerium-144 Ci 0.00E-01 0.00E-01 3.74E-05 0.00E-01

3. Cobalt-57 Ci 0.00E-01 0.00E-01 3.67E-04 1.96E-04

4. Cobalt-58 Ci 0.00E-01 0.00E-01 3.96E-02 1.19E-02

5. Cobalt-60 Ci 0.00E-01 0.00E-01 4.78E-03 3.47E-03

6. Chromium-51 Ci 0.00E-01 0.00E-01 2.77E-04 0.00E-01

7. Cesium-134 Ci 0.00E-01 0.00E-01 6.66E-04 5.28E-04

8. Cesium-136 Ci 0.00E-01 0.00E-01 0.00E-01 1.96E-04

9. Cesium-137 Ci 0.00E-01 0.00E-01 1.41E-03 1.22E-03

10. Cesium-138 Ci 0.00E-01 0.00E-01 1.11E-05 0.00E-01

11. Iron-55 Ci 0.00E-01 0.00E-01 7.058E-03 4.003E-03

12. Iron-59 Ci 0.00E-01 0.00E-01 2.00E-05 0.00E-01

13. Lanthanum-140 Ci 0.00E-01 0.00E-01 1.17E-05 0.00E-01

14. Manganese-54 Ci 0.00E-01 0.00E-01 2.43E-04 1.19E-04

15. Sodium-24 Ci 0.00E-01 0.00E-01 7.26E-05 0.00E-01

16. Niobium-95 Ci 0.00E-01 0.00E-01 1.59E-05 2.72E-06

17. Antimony-124 Ci 0.00E-01 0.00E-01 7.97E-04 2.70E-05

18. Antimony-125 Ci 0.00E-01 0.00E-01 7.38E-03 9.78E-04

19. Zinc-65 Ci 0.00E-01 0.00E-01 3.81E-05 0.00E-01

20. Zirconium-95 Ci 0.00E-01 0.00E-01 2.86E-04 2.09E-05 Total for Period Ci 0.00E-01 0.00E-01 7.03E-02 2.44E-02 E1-7

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.00E-01)

Required by ODCM/Others Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 1st 2nd 1st 2nd Tritium H-3 Ci 1.57E-01 1.28E-01 1.36E+02 2.94E+02 Dissolved and Entrained Noble Gases

1. Xenon-131M Ci 0.00E-01 0.00E-01 3.35E-04 0.00E-01

2. Xenon-133 Ci 0.00E-01 0.00E-01 1.31E-03 3.01E-04 Total for Period Ci 0.00E-01 0.00E-01 1.64E-03 3.01E-04 E1-8

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE G. Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.00E-01)

Required by ODCM/Others Fission and Activation Products Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 3rd 4th 3rd 4th

1. Silver-110M Ci 0.00E-01 0.00E-01 1.21E-03 3.67E-03

2. Cerium-141 Ci 0.00E-01 0.00E-01 7.17E-06 0.00E-01

3. Cerium-144 Ci 0.00E-01 0.00E-01 0.00E-01 3.89E-05

4. Cobalt-57 Ci 0.00E-01 0.00E-01 3.39E-04 7.13E-04

5. Cobalt-58 Ci 0.00E-01 0.00E-01 1.15E-02 6.02E-02

6. Cobalt-60 Ci 0.00E-01 0.00E-01 4.66E-03 1.47E-02

7. Chromium-51 Ci 0.00E-01 0.00E-01 9.54E-05 3.78E-03

8. Cesium-134 Ci 0.00E-01 0.00E-01 1.22E-03 7.81E-05

9. Cesium-137 Ci 0.00E-01 0.00E-01 2.66E-03 1.73E-04

10. Iron-55 Ci 0.00E-01 0.00E-01 1.12E-02 1.61E-02

11. Iron-59 Ci 0.00E-01 0.00E-01 0.00E-01 9.43E-04

12. Iodine-131 Ci 0.00E-01 0.00E-01 3.25E-06 3.60E-04

13. Iodine-132 Ci 0.00E-01 0.00E-01 0.00E-01 2.97E-04

14. Iodine-133 Ci 0.00E-01 0.00E-01 0.00E-01 1.17E-05

15. Lanthanum-140 Ci 0.00E-01 0.00E-01 9.08E-06 1.37E-04

16. Manganese--54 Ci 0.00E-01 0.00E-01 1.64E-04 6.27E-04

17. Niobium-95 Ci 0.00E-01 0.00E-01 5.30E-05 5.28E-04

18. Antimony-124 Ci 0.00E-01 0.00E-01 0.00E-01 2.23E-04

19. Antimony-125 Ci 0.00E-01 0.00E-01 6.82E-04 7.18E-03

20. Technetium-99M Ci 0.00E-01 0.00E-01 0.00E-01 3.30E-06

21. Tellurium-129M Ci 0.00E-01 0.00E-01 1.13E-04 0.00E-01 E1-9

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 LIQUID EFFLUENTS - TOTAL PLANT DISCHARGE Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Unit 3rd 4th 3rd 4th Nuclide

22. Tellurium-132 Ci 0.00E-01 0.00E-01 0.00E-01 2.92E-04 23 Zinc-65 Ci 0.00E-01 0.00E-01 0.00E-01 1.41E-05

24. Zirconium-95 Ci 0.00E-01 0.00E-01 2.91E-05 1.59E-04 Total for Period Ci 0.00E-01 0.00E-01 3.40E-02 1.10E-01 G. Nuclide Summary (Note: Refer to Table A for ODCM nuclides reported as 0.00E-01)

Required by ODCM/Others Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 3rd 4th 3rd 4th Tritium H-3 Ci 1.88E-01 1.13E+00 4.24E+02 5.95E+02 Dissolved and Entrained Noble Gases

1. Xenon-133 Ci 0.00E-01 0.00E-01 1.54E-03 1.89E-02

2. Xenon-133M Ci 0.00E-01 0.00E-01 0.00E-01 1.29E-04

3. Xenon-135 Ci 0.00E-01 0.00E-01 0.00E-01 8.93E-04 Total for Period Ci 0.00E-01 0.00E-01 1.54E-03 1.99E-02 E1-10

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 TABLE A LIQUID TYPICAL LLD EVALUATION(1) t(2)

Nuclide ODCM LLD 1 hr 8 hr 32 hr Manganese-54 5.0E-07 3.36E-08 3.36E-08 3.37E-08 Cobalt-58 5.0E-07 2.53E-08 2.54E-08 2.56E-08 Iron-59 5.0E-07 5.26E-08 5.29E-08 5.37E-08 Cobalt-60 5.0E-07 4.63E-08 4.63E-08 4.64E-08 Zinc-65 5.0E-07 2.95E-08 2.95E-08 2.96E-08 Molybdenum-99 5.0E-07 1.55E-07 1.67E-07 2.15E-07 Cesium-134 5.0E-07 1.91E-08 1.91E-08 1.92E-08 Cesium-137 5.0E-07 3.87E-08 3.87E-08 3.87E-08 Cerium-141 5.0E-07 2.80E-08 2.81E-08 2.87E-08 Cerium-144 5.0E-06 1.11E-07 1.12E-07 1.12E-07 Iodine-131 1.0E-06 2.28E-08 2.34E-08 2.55E-08 Krypton-87 1.0E-05 1.16E-07 5.25E-07 (3)

Krypton-88 1.0E-05 9.95E-08 5.49E-07 (3)

Xenon-133 1.0E-05 4.19E-08 4.36E-08 4.98E-08 Xenon-133m 1.0E-05 1.42E-07 1.55E-07 2.13E-07 Xenon-135 1.0E-05 2.06E-08 3.50E-08 2.17E-07 Xenon-138 1.0E-05 8.37E-06 (3) (3)

Nuclide ODCM LLD Typical LLD Tritium 1.0E-05 1.2E-06 Gross Alpha 1.0E-07 2.0E-08 Strontium-89/90 5.0E-08 3.8E-08/1.4E-08 Iron-55 1.0E-06 1.3E-08 NOTES: (1) LLD values are in µCi/ml.

(2. t is the time between sample collection and counting time.

(3. T 1/2 too short.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

Summation of All 1st 2nd 3rd 4th Releases Unit Qtr Qtr Qtr Qtr %Error A. Noble Gases

1. Total Released Ci 3.89E+00 3.56E+00 3.21E+00 5.74E+00 11%

2. Average Release Rate of Period µCi/sec 4.95E-01 4.53E-01 4.04E-01 7.22E-01

3. Percent of Limit % * * *

B. Iodines

1. Total Iodine-131 Ci 0.00E-01 0.00E-01 0.00E-01 9.51E-06 13%

2. Average Release Rate for Period µCi/sec 0.00E-01 0.00E-01 0.00E-01 1.20E-06

3. Percent of Limit % * * *

C. Particulates

1. Particulates with half-lives >8 days Ci 0.00E-01 0.00E-01 0.00E-01 4.14E-06 16%

2. Average Release Rate for Period µCi/sec 0.00E-01 0.00E-01 0.00E-01 5.21E-07

3. Percent of Limit % * * * *

4. Gross Alpha Ci 0.00E-01 0.00E-01 0.00E-01 0.00E-01 Radio-activity D. Tritium

1. Total Release Ci 5.74E+00 1.95E+01 1.20+01 7.04E+01 15%

2. Average Release Rate for Period µCi/sec 7.30E-01 2.48E+00 1.51E+00 8.85E+00

3. Percent of Limit % * * * *

Applicable limits are expressed in terms of dose. See Tables 5 thru 8.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

1. Noble Gases Required by ODCM/Others Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 1st 2nd 1st 2nd Krypton-85M Ci 0.00E-01 0.00E-01 1.09E-03 0.00E-01 Xenon-131M Ci 0.00E-01 0.00E-01 6.18E-03 0.00E-01 Krypton-85 Ci 0.00E-01 0.00E-01 9.35E-02 3.25E-02 Xenon-135 Ci 0.00E-01 0.00E-01 1.23E-01 4.89E-02 Xenon-133 Ci 0.00E-01 0.00E-01 1.54E+00 1.30E+00 Argon-41 Ci 0.00E-01 0.00E-01 2.12E+00 2.18E+00 Total for Period Ci 0.00E-01 0.00E-01 3.89E+00 3.56E+00

2. Iodines Iodine-133 Ci 0.00E-01 0.00E-01 0.00E-01 0.00E-01 Iodine-131 Ci 0.00E-01 0.00E-01 0.00E-01 0.00E-01 Total for Period Ci 0.00E-01 0.00E-01 0.00E-01 0.00E-01

3. Particulates Bromine-82 Ci 7.71E-06 0.00E-01 0.00E-01 0.00E-01 Total for Period Ci 7.71E-06 0.00E-01 0.00E-01 0.00E-01

4. Tritium Ci 4.79E+00 1.75E+01 9.53E-01 1.96E+00 Total for Period Ci 4.79E+00 1.75E+01 9.53E-01 1.96E+00 NOTE: Refer to Table B for ODCM nuclides reported as 0.00E-01.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES (GROUND LEVEL RELEASES)

1. Noble Gases Required by ODCM/Others Continuous Mode Batch Mode Quarter Quarter Quarter Quarter Nuclide Unit 3rd 4th 3rd 4th

1. Krypton-85M Ci 0.00E-01 0.00E-01 1.72E-03 9.62E-04

2. Xenon-133M Ci 0.00E-01 0.00E-01 3.87E-04 6.01E-03

3. Krypton-85 Ci 0.00E-01 0.00E-01 6.92E-02 1.05E-01

4. Xenon-135 Ci 0.00E-01 0.00E-01 5.58E-02 1.47E-01

5. Xenon-133 Ci 0.00E-01 0.00E-01 1.21E+00 2.47E+00

6. Argon-41 Ci 0.00E-01 0.00E-01 1.87E+00 3.01E+00 Total for Period Ci 0.00E-01 0.00E-01 3.21E+00 5.74E+00

2. Iodines Iodine-132 Ci 0.00E-01 3.76E-06 0.00E-01 0.00E-01 Iodine-131 0.00E-01 9.51E-06 Total for Period Ci 0.00E-01 1.33E-05 0.00E-01 0.00E-01

3. Particulates 0.00E-01 4.14E-06 0.00E-01 0.00E-01 Cobalt-58 Ci Total for Period Ci 0.00E-01 4.14E-06 0.00E-01 0.00E-01

4. Tritium Ci 0.00E-01 6.52E+01 3.24E+00 5.17E+00 Total for Period Ci 8.73E+00 6.52E+01 3.24E+00 5.17E+00 NOTE: Refer to Table B for ODCM nuclides reported as 0.00E-01.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 TABLE B GASEOUS "TYPICAL" LLD EVALUATION(1)

Noble Gas t(2)

Nuclide ODCM LLD 1 hr 1.5 hr Krypton-87 1.0E-04 2.08E-06 2.73E-06 Krypton-88 1.0E-04 1.61E-06 1.81E-06 Xenon-133 1.0E-04 6.61E-07 6.63E-07 Xenon-133m 1.0E-04 2.34E-06 2.35E-06 Xenon-135 1.0E-04 3.43E-07 3.56E-07 Xenon-138 1.0E-04 1.40E-04 6.10E-04 Particulate Sample(3) 1 hr 24 hr 7.0 da Manganese-54 1.0E-10 7.47E-12 3.12E-13 4.48E-14 Cobalt-58 1.0E-10 5.62E-12 2.35E-13 3.46E-14 Iron-59 1.0E-10 1.20E-11 5.02E-13 7.49E-14 Cobalt-60 1.0E-10 1.07E-11 4.46E-13 6.38E-14 Zinc-65 1.0E-10 6.71E-12 2.80E-13 4.03E-14 Molybdenum-99 1.0E-10 3.43E-11 1.61E-12 4.70E-13 Cesium-134 1.0E-10 4.25E-12 1.77E-13 2.54E-14 Cesium-137 1.0E-10 8.48E-12 3.54E-13 5.05E-14 Cerium-141 1.0E-10 5.10E-12 2.15E-13 3.26E-14 Cerium-144 1.0E-10 2.01E-11 8.33E-13 1.20E-13 Iodine-131 1.0E-10 4.76E-12 2.07E-13 3.77E-14 Charcoal Sample Iodine-131 1.0E-11 7.25E-12 3.15E-13 5.74E-14 (1) LLD values are in µCi/ml.

(2) t is the time between sample collection and counting time.

(3) LLD based on sample time + 30 min. sample to analysis.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 TABLE B GASEOUS "TYPICAL" LLD EVALUATION(1)

Nuclide ODCM LLD Typical LLD Tritium 1.0E-06 1.0E-11 Gross Alpha 1.0E-11 1.5E-14 Strontium-89 1.0E-11 1.0E-14 Strontium-90 1.0E-11 1.0E-15 NOTES: (1) LLD values are in µCi/cc.

(2) t for noble gases is the time from sampling to analysis.

t for charcoal and particulate samples is the midpoint of sampling to analysis.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SOLID WASTE (RADIOACTIVE SHIPMENTS)

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

1. Type of Waste Unit Period Error %

a. Spent Resins, Filter Sludges, Evaporator m3 6.19E+01 +1.00E-01 Bottoms, etc. Ci 1.15E+03 +1.00E+01

b. Dry Active Waste, Compressible Waste m3 5.56E+01 +1.00E-01 Contaminated Equipment, etc. Ci 2.11E+00 +1.00E-02

c. Irradiated Components, Control m3 None N/A Rods, etc. Ci None N/A

d. Other: Mechanical Filters and Tank Residue m3 1.70E+01 +1.00E-01 Ci 8.33E+01 +1.00E+00

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

a. Spent resins, filter sludges, evaporator bottoms, etc. (nuclides determined by measurement)

Curies Percent

1. Hydrogen-3 1.32E+00 0.12

2. Carbon-14 7.02E+00 0.61

3. Manganese-54 9.10E+00 0.79

4. Iron-55 9.77E+01 8.53

5. Cobalt-57 1.46E+00 0.13

6. Cobalt-58 5.53E+00 0.48

7. Nickel-59 5.41E+00 0.47

8. Cobalt-60 1.87E+02 16.34

9. Nickel-63 6.18E+02 53.99

10. Zinc-65 2.26E-01 0.02

11. Strontium-90 1.33E+00 0.12

12. Silver-110m 2.66E-01 0.02 13 Tin-113 3.31E-03 0.00

14. Antimony-125 8.35E+00 0.73

15. Cesium-134 4.03E+01 3.51

16. Cesium-137 1.61E+02 14.10

17. Cerium-144 1.96E-02 0.00

18. Plutonium-238 9.16E-03 0.00

19. Plutonium-239/240 6.20E-03 0.00

20. Plutonium-241 3.53E-01 0.03

21. Americium-241 2.10E-03 0.00

22. Curium-243/244 1.16E-02 0.00 E1-17

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SOLID WASTE (RADIOACTIVE SHIPMENTS)

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

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

Curies Percent

1. Chromium-51 2.84E-02 1.34

2. Manganese-54 6.69E-03 0.32

3. Iron-55 1.03E+00 48.52

4. Cobalt-58 2.52E-01 11.94

5. Iron-59 9.62E-03 0.46

6. Cobalt-60 6.54E-02 3.10

7. Nickel-63 6.86E-01 32.45

8. Zirconium-95 3.93E-03 0.19

9. Niobium-95 6.25E-03 0.30

10. Silver-110m 1.27E-03 0.06

11. Antimony-125 4.20E-03 0.20

12. Cesium-134 2.29E-03 0.11

13. Cesium-137 2.05E-02 0.97

c. Irradiated Components Curies Percent None N/A N/A E1-18

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004

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

d. Other: Mechanical Filters and Tank Residue Curies Percent

1. Hydrogen-3 5.42E-01 0.65

2. Carbon-14 3.53E+00 4.23

3. Manganese-54 3.39E-02 0.04

4. Iron-55 1.41E+01 16.90

5. Cobalt-57 4.69E-03 0.01

6. Cobalt-58 4.44E-02 0.05

7. Nickel-59 5.03E-01 0.60

8. Cobalt-60 1.16E+01 13.93

9. Nickel-63 4.88E+01 58.54

10. Zinc-65 2.02E-03 0.00

11. Strontium-90 1.47E-02 0.02

12. Niobium-94 2.37E-02 0.03

13. Technetium-99 1.20E-03 0.00

14. Ruthenium-106 9.94E-03 0.01

15. Silver-110m 3.93E-02 0.05

16. Tin-113 2.22E-03 0.00

17. Antimony-125 1.90E-02 0.02

18. Cesium-134 7.71E-01 0.93

19. Cesium-137 3.14E+00 3.77

20. Cerium-144 4.07E-03 0.00

20. Plutonium-238 3.88E-03 0.00

21. Plutonium-239/240 6.04E-03 0.01

22. Plutonium-241 1.54E-01 0.19

22. Americium-241 4.25E-03 0.01

23. Curium-243/244 5.41E-03 0.01 E1-19

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 SOLID WASTE (RADIOACTIVE SHIPMENTS)

3. Solid Waste Disposition

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

Number of Shipments Type Quantity Mode of Transportation Destination 7 A-LSA II Motor Freight Chem-Nuclear Barnwell, SC 2 B-LSA II Motor Freight Chem-Nuclear Barnwell, SC 7 Type B Motor Freight Chem-Nuclear Barnwell, SC Note: Eight additional waste shipments were sent from Sequoyah for disposal that were generated and packaged at Watts Bar Nuclear Plant. This waste had been temporarily stored at Sequoyahs onsite storage facility.

b. Dry active waste, compressible waste, contaminated equipment, etc.

Number of Shipments Type Quantity Mode of Transportation Destination 62* A-LSA Motor Freight Envirocare near Clive, Utah

62 of the shipments were shipped by a waste processor.

c. Irradiated components, control rods, etc.

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

d. Other: Mechanical Filters and Tank Residue Number of Shipments Type Quantity Mode of Transportation Destination 3 A-LSA II Motor Freight Chem-Nuclear Barnwell, SC 2 B-LSA II Motor Freight Chem-Nuclear Barnwell, SC Note: Two additional waste shipments were sent from Sequoyah for disposal that were generated and packaged at Watts Bar Nuclear Plant. This waste had been temporarily stored at Sequoyahs onsite storage facility.

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? Two shipments of tank residue were solidified at the Duratek Consolidation and Services Facility. The tank residue was solidified to meet the free standing liquid (water) criteria for disposal. The tank residue was contained and disposed in a high integrity container.

If yes, solidification media: Webbs Portland I cement E1-20

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Independent Spent Storage Installation SQN implemented use of an independent spent storage installation (ISFSI) on July13, 2004.

The ISFSI is located on site, within the protected area and is designed to hold 90 spent fuel canisters. The ISFSI is considered part of plant operations for the purposes of the radiological environmental monitoring program.

SQN ISFSI TS 5.4a states The HI-Storm 100 Cask system does not create any radioactive material or have any radioactive waste treatment systems. Therefore, specific operating procedures for the control of radioactive effluents are not required. Specification 3.1.1, Multi-Purpose Canister (MPC) provides assurances that there are no radioactive effluents from spent fuel storage canister.

The EPA limits for the total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190, are as follows:

Total Body =25 mrem/year Thyroid =75 mrem/year Any other organ =25 mrem/year The SQN ISFSI is considered part of the SQN site and part of plant operations and any radioactive release is included in this report as total site releases. These releases are within 40 CFR 190 limits and 10 CFR 72.104 limits.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 ENCLOSURE 2 RADIOLOGICAL IMPACT ASSESSMENT REPORT SEQUOYAH NUCLEAR PLANT JANUARY - DECEMBER 2004

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 INTRODUCTION Potential doses to maximum individuals and the population around Sequoyah Nuclear Plant (SQN) 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 SQN.

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."

The limits for doses in unrestricted areas from airborne noble gases releases are:

Less than or equal to 5 mrad per quarter and 10 mrad per year (per reactor unit) for gamma radiation,

- and -

Less than or equal to 10 mrad per quarter and 20 mrad per year (per reactor unit) for beta radiation.

The limit for the dose to a member of the general public in an unrestricted area from iodines and particulates released in airborne effluents is:

Less than or equal to 7.5 mrem per quarter and 15 mrem per year (per reactor unit) to any organ.

The limit for doses to a member of the general public from radioactive material in liquid effluents released to unrestricted areas is:

Less than or equal to 1.5 mrem per quarter and 3 mrem per year (per reactor unit) to the total body,

- and -

Less than or equal to 5 mrem per quarter and 10 mrem per year (per reactor unit) to any organ The EPA limits for total dose to the public in the vicinity of a nuclear power plant, established in the Environmental Dose Standard of 40 CFR 190 are:

Less than or equal to 25 mrem per year to the total body, Less than or equal to 75 mrem per year to the thyroid,

- and -

Less than or equal to 25 mrem per year to any other organ.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 DOSE CALCULATIONS Estimated doses to the public are determined using computer models: 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 1 through 9.

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

Airborne Discharge Points Releases from SQN are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 46 meters, and are presented for each quarter in Attachment 1.0.

Meteorological Data Meteorological variables at SQN 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 JFD 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 noncalm 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 SQN ODCM. The highest of these doses is then selected.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Submersion Dose External doses to the skin and total body, due to submersion in a cloud of noble gases, are estimated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.

Organ Dose Doses to organs due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways: ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. 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 1 through 4.

DOSES FROM LIQUID EFFLUENTS For liquid effluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of SQN. Parameters used to determine the doses are based on guidance given by the NRC (in Regulatory Guides 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 SQN ODCM.

Liquid Release Points and River Data Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. Routine liquid releases from SQN, located at Tennessee River Mile 484, 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-fifth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 471.0.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 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 (East Side Utilities). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Sequoyah, is an individual who obtains all of his drinking water at East Side Utilities, consumes fish caught from the Tennessee River between SQN and Chickamauga Dam, and spends 500 hours0.00579 days 0.139 hours 8.267196e-4 weeks 1.9025e-4 months per year on the shoreline just below the outfall from Sequoyah.

Dose estimates for the maximum individual due to liquid effluents for each quarter in the period are presented in Tables 5 through 8, along with the average river flows past the plant site for the periods.

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 Population doses for highest exposed organ due to airborne effluents are calculated for an estimated 1,060,000 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 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 1 through 8.

DIRECT RADIATION External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around SQN as part of the offsite Environmental Radiological Monitoring Program.

The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 15.25 mR/quarter at onsite (at or near the site boundary) stations and approximately 14.00 mR/quarter at offsite stations, or approximately 1.25 mR/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for preoperation and construction phases of the TVA nuclear 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 E2-4

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 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 SQN 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 fence for an entire work year (2000/8760 hours). Results from onsite TLD measurements for the calendar year in question indicate that the highest onsite TLD reading was 94 mrem. Using this value, and subtracting an annual background value of 61 mrem/year, and multiplying by the ratio of the occupancy times, the external dose was 7.53 mrem. The doses due to radioactive effluents released to the atmosphere calculated in this report would not add a significant amount to this measured dose.

This dose is well below the 10 CFR 20 annual limit of 100 mrem.

TOTAL DOSE To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from SQN radioactive effluents and 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 9.

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 1 Doses from Airborne Effluents First Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 2.69E-03 mrad 5 mrad <1 NNW/730 Beta Air 1.22E-03 mrad 10 mrad <1 NNW/730 Submersion Total Body 2.00E-03 mrad 10 mrad <1 NNW/841 Skin 3.03E-03 mrad 10 mrad <1 NNW/841 Organ Doses Child/Thyroid 6.52E-03 mrem 7.5 mrem <1 NNW/841 Child/Total Body 6.52E-03 mrem 7.5 mrem <1 NNW/841 Population Doses Total Body Dose 7.41E-03 man-rem Maximum Organ Dose (organ) 7.41E-03 man-rem (thyroid, liver, bone, GIT, lung, kidney)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 2 Doses from Airborne Effluents Second Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 4.72E-03 mrad 5 mrad <1 N/950 Beta Air 2.01E-03 mrad 10 mrad <1 N/950 Submersion Total Body 2.67E-03 mrad 10 mrad <1 N/1295 Skin 4.01E-03 mrad 10 mrad <1 N/1295 Organ Doses Child/Thyroid 1.90E-02 mrem 7.5 mrem <1 NNW/841 Child/Total Body 1.90E-02 mrem 7.5 mrem <1 NNW/841 Population Doses Total Body Dose 2.65E-02 man-rem Maximum Organ Dose (organ) 2.65E-02 man-rem (thyroid, liver, bone, GIT, lung, kidney)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 3 Doses from Airborne Effluents Third Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 3.11E-03 mrad 5 mrad <1 S/1570 Beta Air 1.37E-03 mrad 10 mrad <1 S/1570 Submersion Total Body 2.38E-03 mrad 10 mrad <1 S/1786 Skin 3.58E-03 mrad 10 mrad <1 S/1786 Organ Doses Child/Thyroid 1.25E-02 mrem 7.5 mrem <1 S/2093 Child/Total Body 1.25E-02 mrem 7.5 mrem <1 S/2093 Population Doses Total Body Dose 1.58E-02 man-rem Maximum Organ Dose (organ) 1.58E-02 man-rem (thyroid, liver, bone, GIT, lung, kidney)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Quarterly Percent of Location Pathway Dose Limit Limit Sector/Distance External Gamma Air 6.08E-03 mrad 5 mrad <1 N/950 Beta Air 2.79E-03 mrad 10 mrad <1 N/950 Submersion Total Body 3.50E-03 mrad 10 mrad <1 N/1295 Skin 5.30E-03 mrad 10 mrad <1 N/1295 Organ Doses Child/Thyroid 4.78E-02 mrem 7.5 mrem <1 NNW/841 Child/Total Body 4.77E-02 mrem 7.5 mrem <1 NNW/841 Population Doses Total Body Dose 9.64E-02 man-rem Maximum Organ Dose (organ) 9.66E-02 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 5 Doses from Liquid Effluents First Quarter Individual Doses (mrem)

Quarterly Percent of Age Group Organ Dose Limit Limit Adult Total 9.60E-04 1.5 mrem <1%

Body Child Liver 1.20E-03 5 mrem <1%

Child Thyroid 7.80E-04 5 mrem <1%

Average Riverflow past SQN (cubic feet per second): 42,384 Population Doses Total Body Dose 3.80E-02 man-rem Maximum Organ Dose (organ) 4.00E-02 man-rem (GIT)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 6 Doses from Liquid Effluents Second Quarter Individual Doses (mrem)

Quarterly Percent Age Group Organ Dose Limit of Limit Child Total Body 3.90E-03 1.5 mrem <1%

Child Liver 4.70E-03 5 mrem <1%

Child Thyroid 3.80E-03 5 mrem <1%

Average Riverflow past SQN (cubic feet per second): 16,223 Population Doses Total Body Dose 2.50E-01 man-rem Maximum Organ Dose (organ) 2.60E-01 man-rem (GIT, Liver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 7 Doses from Liquid Effluents Third Quarter Individual Doses (mrem)

Age Quarterly Percent of Group Organ Dose Limit Limit Child Total Body 2.40E-03 1.5 mrem <1%

Child Liver 3.20E-03 5 mrem <1%

Child Thyroid 2.30E-03 5 mrem <1%

Average Riverflow past SQN (cubic feet per second): 38,403 Population Doses Total Body Dose 1.60E-01 man-rem Maximum Organ Dose (organ) 1.60E-01 man-rem (bone, GIT, liver, kidney, lung)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 8 Doses from Liquid Effluents Fourth Quarter Individual Doses (mrem)

Age Quarterly Percent Group Organ Dose Limit of Limit Child Total Body 2.10E-03 1.5 mrem <1%

Child Liver 2.10E-03 5 mrem <1%

Child Thyroid 2.10E-03 5 mrem <1%

Average River flow past SQN (cubic feet per second): 63,446 Population Doses Total Body Dose 1.30E-01 man-rem Maximum Organ Dose (organ) 1.40E-01 man-rem (GIT)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 95,400 man-rem/year (based on 90 mrem/yr for natural background).

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EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT 2004 Table 9 Total Dose from Fuel Cycle First Second Third Fourth Dose Quarter Quarter Quarter Quarter Total Body or any Organ (except thyroid)

Total body air submersion 2.00E-03 2.67E-03 2.38E-03 3.50E-03 Critical organ dose (air) 6.52E-03 1.90E-02 1.25E-02 4.77E-02 Total body dose (liquid) 9.60E-04 3.90E-03 2.40E-03 2.10E-03 Maximum organ dose 1.20E-03 4.70E-03 3.20E-03 2.10E-03 (liquid)

Direct Radiation Dose 0.00E-00 0.00E-00 0.00E-00 0.00E-00 Total 1.07E-02 3.03E-02 2.05E-02 5.54E-02 Cumulative Total Dose (Total body or any other organ) mrem 1.16E-01 Annual Dose Limit (mrem) 25 Percent of Limit 0.46 Thyroid Dose (mrem)

Total body air submersion 2.00E-03 2.67E-03 2.38E-03 3.50E-03 Thyroid dose (airborne) 6.52E-03 1.90E-02 1.25E-02 4.78E-02 Total body dose (liquid) 9.60E-04 3.90E-03 2.40E-03 2.10E-03 Thyroid dose (liquid) 7.80E-04 3.80E-03 2.30E-03 2.10E-03 Direct Radiation Dose 0.00E-00 0.00E-00 0.00E-00 0.00E-00 Total 1.03E-02 2.94E-02 1.96E-02 5.55E-02 Cumulative Total Dose (Thyroid) mrem 1.15E-01 Annual Dose Limit (mrem) 75 Percent of Limit 0.15 E2-14

Attachment 1.0 Joint Frequency Distribution Tables A1-1

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 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 0.519 0.236 0.330 0.000 0.000 0.000 1.085 NNE 0.000 0.000 0.094 0.566 1.321 1.038 0.000 0.000 0.000 3.019 NE 0.000 0.000 0.236 0.472 0.236 0.047 0.000 0.000 0.000 0.991 ENE 0.000 0.000 0.047 0.189 0.000 0.000 0.000 0.000 0.000 0.236 E 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.094 SE 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.000 0.000 0.142 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 0.047 0.000 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0.236 0.755 0.236 0.000 0.000 0.000 1.226 SW 0.000 0.000 0.000 0.047 0.613 0.142 0.000 0.000 0.000 0.802 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 0.047 0.047 0.047 0.000 0.000 0.000 0.142 WNW 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.094 NW 0.000 0.000 0.000 0.000 0.142 0.142 0.047 0.000 0.000 0.330 NNW 0.000 0.000 0.000 0.047 0.236 0.472 0.000 0.000 0.000 0.755 SUBTOTAL 0.000 0.000 0.472 2.311 3.679 2.500 0.047 0.000 0.000 9.009 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS A 191 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 191 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 6.56 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-2

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.094 0.047 0.047 0.000 0.000 0.000 0.189 NNE 0.000 0.000 0.047 0.142 0.142 0.189 0.047 0.000 0.000 0.566 NE 0.000 0.000 0.094 0.094 0.000 0.000 0.000 0.000 0.000 0.189 ENE 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.189 0.000 0.000 0.000 0.000 0.189 SSW 0.000 0.000 0.094 0.283 0.708 0.142 0.000 0.000 0.000 1.226 SW 0.000 0.000 0.000 0.236 0.330 0.047 0.000 0.000 0.000 0.613 WSW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.047 0.094 0.000 0.000 0.000 0.142 WNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.094 NNW 0.000 0.000 0.047 0.000 0.189 0.142 0.000 0.000 0.000 0.377 SUBTOTAL 0.000 0.000 0.330 0.849 1.698 0.802 0.047 0.000 0.000 3.726 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS B 79 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 79 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 6.23 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-3

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 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 0.047 0.047 0.047 0.000 0.000 0.000 0.142 NNE 0.000 0.000 0.189 0.142 0.142 0.283 0.047 0.000 0.000 0.802 NE 0.000 0.000 0.236 0.047 0.000 0.047 0.000 0.000 0.000 0.330 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.094 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 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SSE 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.094 S 0.000 0.000 0.094 0.189 0.047 0.047 0.000 0.000 0.000 0.377 SSW 0.000 0.000 0.094 0.142 0.519 0.000 0.000 0.000 0.000 0.755 SW 0.000 0.000 0.189 0.283 0.142 0.000 0.000 0.000 0.000 0.613 WSW 0.000 0.000 0.000 0.047 0.047 0.094 0.000 0.000 0.000 0.189 W 0.000 0.000 0.000 0.094 0.094 0.142 0.000 0.000 0.000 0.330 WNW 0.000 0.000 0.000 0.142 0.047 0.142 0.000 0.000 0.000 0.330 NW 0.000 0.000 0.000 0.000 0.094 0.047 0.000 0.000 0.000 0.142 NNW 0.000 0.000 0.000 0.047 0.236 0.189 0.000 0.000 0.000 0.472 SUBTOTAL 0.000 0.000 0.943 1.226 1.462 1.038 0.047 0.000 0.000 4.717 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS C 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 5.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-4

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 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 1.226 1.321 1.887 1.226 0.000 0.000 0.000 5.660 NNE 0.000 0.000 1.132 1.934 2.358 2.123 0.236 0.000 0.000 7.783 NE 0.000 0.000 0.189 0.047 0.000 0.142 0.000 0.000 0.000 0.377 ENE 0.000 0.000 0.189 0.047 0.000 0.000 0.000 0.000 0.000 0.236 E 0.000 0.094 0.236 0.047 0.000 0.000 0.000 0.000 0.000 0.377 ESE 0.000 0.047 0.236 0.000 0.000 0.000 0.000 0.000 0.000 0.283 SE 0.000 0.000 0.189 0.047 0.000 0.000 0.000 0.000 0.000 0.236 SSE 0.000 0.094 0.330 0.094 0.000 0.047 0.000 0.000 0.000 0.566 S 0.000 0.189 0.991 0.755 0.330 0.377 0.000 0.000 0.000 2.642 SSW 0.000 0.047 1.132 1.321 1.132 0.236 0.000 0.000 0.000 3.868 SW 0.000 0.000 1.226 1.651 1.415 0.236 0.000 0.000 0.000 4.528 WSW 0.000 0.047 0.425 0.142 0.236 0.047 0.000 0.000 0.000 0.896 W 0.000 0.047 0.189 0.142 0.519 0.283 0.000 0.000 0.000 1.179 WNW 0.000 0.047 0.189 0.519 0.519 0.377 0.047 0.000 0.000 1.698 NW 0.000 0.047 0.189 0.613 0.943 0.377 0.047 0.000 0.000 2.217 NNW 0.000 0.094 0.613 0.896 1.509 0.377 0.047 0.000 0.000 3.538 SUBTOTAL 0.000 0.755 8.679 9.575 10.849 5.849 0.377 0.000 0.000 36.085 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS D 765 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 765 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 5.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-5

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 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 0.142 1.745 0.991 0.094 0.000 0.000 0.000 0.000 2.972 NNE 0.000 0.236 2.547 2.075 0.660 0.189 0.000 0.000 0.000 5.708 NE 0.000 0.189 0.708 0.094 0.000 0.000 0.000 0.000 0.000 0.991 ENE 0.000 0.189 0.236 0.047 0.000 0.000 0.000 0.000 0.000 0.472 E 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 ESE 0.000 0.000 0.236 0.000 0.000 0.000 0.000 0.000 0.000 0.236 SE 0.000 0.236 0.189 0.000 0.000 0.000 0.000 0.000 0.000 0.425 SSE 0.000 0.094 0.283 0.142 0.283 0.000 0.000 0.000 0.000 0.802 S 0.000 0.189 1.226 0.377 0.849 0.283 0.000 0.000 0.000 2.925 SSW 0.000 0.236 2.689 2.075 1.368 0.236 0.000 0.000 0.000 6.604 SW 0.000 0.330 1.792 0.755 0.236 0.047 0.000 0.000 0.000 3.160 WSW 0.000 0.094 0.425 0.330 0.047 0.000 0.000 0.000 0.000 0.896 W 0.000 0.047 0.236 0.425 0.000 0.000 0.000 0.000 0.000 0.708 WNW 0.000 0.047 0.236 0.142 0.047 0.000 0.000 0.000 0.000 0.472 NW 0.000 0.047 0.425 0.519 0.142 0.047 0.000 0.000 0.000 1.179 NNW 0.000 0.189 0.660 0.660 0.142 0.000 0.000 0.000 0.000 1.651 SUBTOTAL 0.000 2.311 13.679 8.632 3.868 0.802 0.000 0.000 0.000 29.292 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS E 621 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 621 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 3.60 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-6

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.094 0.896 0.047 0.000 0.000 0.000 0.000 0.000 1.038 NNE 0.000 0.425 3.538 0.377 0.000 0.000 0.000 0.000 0.000 4.340 NE 0.000 0.283 0.943 0.000 0.000 0.000 0.000 0.000 0.000 1.226 ENE 0.000 0.189 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.283 E 0.000 0.236 0.142 0.000 0.000 0.000 0.000 0.000 0.000 0.377 ESE 0.000 0.330 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.377 SE 0.000 0.236 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.283 SSE 0.000 0.330 0.283 0.047 0.000 0.000 0.000 0.000 0.000 0.660 S 0.000 0.189 0.377 0.094 0.000 0.000 0.000 0.000 0.000 0.660 SSW 0.000 0.189 0.943 0.047 0.000 0.000 0.000 0.000 0.000 1.179 SW 0.000 0.047 0.849 0.142 0.000 0.000 0.000 0.000 0.000 1.038 WSW 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 W 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 WNW 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.094 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 SUBTOTAL 0.000 2.689 8.396 0.755 0.000 0.000 0.000 0.000 0.000 11.840 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 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 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 2.12 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-7

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant JAN 1, 2004 - MAR 31, 2004 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 0.189 0.047 0.000 0.000 0.000 0.000 0.000 0.236 NNE 0.000 0.142 1.321 0.000 0.000 0.000 0.000 0.000 0.000 1.462 NE 0.000 0.189 0.708 0.000 0.000 0.000 0.000 0.000 0.000 0.896 ENE 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.094 E 0.000 0.094 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.189 ESE 0.000 0.283 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.330 SE 0.000 0.142 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.142 SSE 0.000 0.377 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.425 S 0.000 0.236 0.142 0.000 0.000 0.000 0.000 0.000 0.000 0.377 SSW 0.000 0.000 0.802 0.000 0.000 0.000 0.000 0.000 0.000 0.802 SW 0.000 0.047 0.283 0.047 0.000 0.000 0.000 0.000 0.000 0.377 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 1.557 3.679 0.094 0.000 0.000 0.000 0.000 0.000 5.330 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2120 TOTAL HOURS OF STABILITY CLASS G 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/04/30 MEAN WIND SPEED = 1.91 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-8

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 0.093 0.093 0.556 0.000 0.000 0.000 0.741 NNE 0.000 0.000 0.185 0.509 0.463 0.232 0.000 0.000 0.000 1.390 NE 0.000 0.000 0.324 0.324 0.232 0.093 0.000 0.000 0.000 0.973 ENE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.046 0.093 0.046 0.000 0.000 0.000 0.185 S 0.000 0.000 0.000 0.232 0.324 0.093 0.000 0.000 0.000 0.648 SSW 0.000 0.000 0.139 1.714 1.019 0.139 0.000 0.000 0.000 3.011 SW 0.000 0.000 0.232 0.973 0.232 0.000 0.000 0.000 0.000 1.436 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.232 0.139 0.000 0.000 0.000 0.371 NNW 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 SUBTOTAL 0.000 0.000 0.973 3.983 2.733 1.482 0.000 0.000 0.000 9.171 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS A 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 198 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 5.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-9

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 0.000 0.046 0.000 0.000 0.000 0.093 NNE 0.000 0.000 0.139 0.139 0.046 0.000 0.000 0.000 0.000 0.324 NE 0.000 0.000 0.278 0.093 0.000 0.000 0.000 0.000 0.000 0.371 ENE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 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 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.093 0.093 0.093 0.093 0.000 0.000 0.000 0.371 S 0.000 0.000 0.046 0.417 0.278 0.046 0.000 0.000 0.000 0.787 SSW 0.000 0.000 0.371 1.112 0.648 0.000 0.000 0.000 0.000 2.131 SW 0.000 0.000 0.232 0.371 0.093 0.000 0.000 0.000 0.000 0.695 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 NW 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 NNW 0.000 0.000 0.046 0.000 0.093 0.093 0.000 0.000 0.000 0.232 SUBTOTAL 0.000 0.000 1.390 2.316 1.297 0.463 0.000 0.000 0.000 5.465 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS B 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 4.82 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-10

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 0.093 0.046 0.093 0.000 0.000 0.000 0.278 NNE 0.000 0.000 0.324 0.139 0.093 0.046 0.000 0.000 0.000 0.602 NE 0.000 0.000 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.232 ENE 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 E 0.000 0.000 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.232 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 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.093 0.093 0.000 0.093 0.000 0.000 0.000 0.278 S 0.000 0.000 0.232 0.509 0.046 0.046 0.000 0.000 0.000 0.834 SSW 0.000 0.000 0.648 1.065 0.371 0.046 0.000 0.000 0.000 2.131 SW 0.000 0.000 0.324 0.278 0.046 0.000 0.000 0.000 0.000 0.648 WSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.046 0.093 0.000 0.046 0.000 0.000 0.000 0.185 NW 0.000 0.000 0.000 0.046 0.046 0.093 0.000 0.000 0.000 0.185 NNW 0.000 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.185 SUBTOTAL 0.000 0.000 2.455 2.409 0.695 0.602 0.000 0.000 0.000 6.160 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS C 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 4.33 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-11

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 1.806 1.065 0.232 0.139 0.000 0.000 0.000 3.242 NNE 0.000 0.093 0.834 1.297 0.834 0.463 0.000 0.000 0.000 3.520 NE 0.000 0.046 0.324 0.093 0.046 0.000 0.000 0.000 0.000 0.509 ENE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.232 0.046 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.000 0.000 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SE 0.000 0.000 0.417 0.000 0.000 0.000 0.000 0.000 0.000 0.417 SSE 0.000 0.000 0.741 0.556 0.185 0.093 0.000 0.000 0.000 1.575 S 0.000 0.046 3.381 4.261 1.343 0.232 0.000 0.000 0.000 9.264 SSW 0.000 0.093 3.520 3.335 0.880 0.139 0.000 0.000 0.000 7.967 SW 0.000 0.000 1.158 0.973 0.556 0.093 0.000 0.000 0.000 2.779 WSW 0.000 0.000 0.185 0.371 0.139 0.000 0.000 0.000 0.000 0.695 W 0.000 0.093 0.324 0.000 0.046 0.000 0.000 0.000 0.000 0.463 WNW 0.000 0.046 0.185 0.232 0.093 0.000 0.000 0.000 0.000 0.556 NW 0.000 0.139 0.185 0.185 0.232 0.278 0.000 0.000 0.000 1.019 NNW 0.000 0.000 0.278 0.463 0.787 0.324 0.000 0.000 0.000 1.853 SUBTOTAL 0.000 0.602 13.756 12.876 5.373 1.760 0.000 0.000 0.000 34.368 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS D 743 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 742 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 4.07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-12

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 0.008 0.509 3.983 1.158 0.324 0.093 0.000 0.000 0.000 6.076 NNE 0.005 0.648 1.992 0.371 0.046 0.000 0.000 0.000 0.000 3.062 NE 0.001 0.324 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.557 ENE 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 E 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.001 0.371 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.510 SE 0.001 0.324 0.324 0.000 0.000 0.000 0.000 0.000 0.000 0.650 SSE 0.002 0.463 0.463 0.139 0.046 0.000 0.000 0.000 0.000 1.113 S 0.004 0.417 2.038 0.509 0.000 0.000 0.000 0.000 0.000 2.969 SSW 0.008 0.463 3.705 1.158 0.139 0.000 0.000 0.000 0.000 5.473 SW 0.007 0.602 3.057 0.463 0.139 0.000 0.000 0.000 0.000 4.268 WSW 0.003 0.232 1.251 0.046 0.000 0.000 0.000 0.000 0.000 1.531 W 0.002 0.556 0.463 0.093 0.000 0.000 0.000 0.000 0.000 1.113 WNW 0.001 0.324 0.278 0.232 0.000 0.000 0.000 0.000 0.000 0.835 NW 0.001 0.232 0.509 0.278 0.000 0.000 0.000 0.000 0.000 1.020 NNW 0.003 0.324 1.065 0.556 0.139 0.000 0.000 0.000 0.000 2.087 SUBTOTAL 0.046 6.021 19.592 5.002 0.834 0.093 0.000 0.000 0.000 31.589 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS E 682 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 682 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 2.51 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-13

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 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 0.139 1.297 0.324 0.000 0.000 0.000 0.000 0.000 1.767 NNE 0.010 0.417 1.760 0.185 0.000 0.000 0.000 0.000 0.000 2.372 NE 0.004 0.417 0.463 0.000 0.000 0.000 0.000 0.000 0.000 0.884 ENE 0.001 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.140 E 0.002 0.278 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.326 ESE 0.002 0.324 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.326 SE 0.002 0.278 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.326 SSE 0.003 0.417 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.558 S 0.003 0.139 0.556 0.000 0.000 0.000 0.000 0.000 0.000 0.698 SSW 0.005 0.139 0.973 0.000 0.000 0.000 0.000 0.000 0.000 1.117 SW 0.004 0.093 0.695 0.000 0.000 0.000 0.000 0.000 0.000 0.791 WSW 0.001 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.140 W 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 WNW 0.001 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.140 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NNW 0.004 0.093 0.741 0.093 0.000 0.000 0.000 0.000 0.000 0.930 SUBTOTAL 0.046 3.057 6.901 0.602 0.000 0.000 0.000 0.000 0.000 10.607 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS F 229 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 229 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 1.91 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-14

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant APR 1, 2004 - JUN 30, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNE 0.000 0.000 0.463 0.000 0.000 0.000 0.000 0.000 0.000 0.463 NE 0.000 0.185 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.371 ENE 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.185 SE 0.000 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.232 SSE 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.139 S 0.000 0.185 0.371 0.000 0.000 0.000 0.000 0.000 0.000 0.556 SSW 0.000 0.000 0.463 0.000 0.000 0.000 0.000 0.000 0.000 0.463 SW 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.973 1.667 0.000 0.000 0.000 0.000 0.000 0.000 2.640 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2160 TOTAL HOURS OF STABILITY CLASS G 57 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 57 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2159 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/08/31 MEAN WIND SPEED = 1.69 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-15

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 0.000 0.046 0.000 0.000 0.000 0.093 NNE 0.000 0.000 0.046 0.928 0.649 0.417 0.000 0.000 0.000 2.041 NE 0.000 0.000 0.139 0.371 0.093 0.000 0.000 0.000 0.000 0.603 ENE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.046 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 0.278 0.093 0.000 0.000 0.000 0.000 0.371 SSW 0.000 0.000 0.046 1.020 0.186 0.000 0.000 0.000 0.000 1.252 SW 0.000 0.000 0.232 0.417 0.093 0.000 0.000 0.000 0.000 0.742 WSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.464 3.247 1.113 0.464 0.000 0.000 0.000 5.288 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS A 115 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 114 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 4.93 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-16

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 0.278 0.186 0.000 0.000 0.000 0.000 0.510 NNE 0.000 0.000 0.186 1.484 0.139 0.186 0.000 0.000 0.000 1.994 NE 0.000 0.000 0.232 0.278 0.046 0.000 0.000 0.000 0.000 0.557 ENE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 E 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.186 0.046 0.046 0.000 0.000 0.000 0.000 0.278 S 0.000 0.000 0.278 0.417 0.046 0.000 0.000 0.000 0.000 0.742 SSW 0.000 0.000 0.417 1.067 0.000 0.000 0.000 0.000 0.000 1.484 SW 0.000 0.000 0.417 0.371 0.000 0.000 0.000 0.000 0.000 0.788 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 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 1.948 4.128 0.510 0.186 0.000 0.000 0.000 6.772 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS B 147 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 4.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-17

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 0.278 0.000 0.000 0.000 0.000 0.557 NNE 0.000 0.000 0.464 0.788 0.278 0.093 0.000 0.000 0.000 1.623 NE 0.000 0.000 0.325 0.371 0.000 0.000 0.000 0.000 0.000 0.696 ENE 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.186 E 0.000 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.186 ESE 0.000 0.000 0.186 0.046 0.000 0.000 0.000 0.000 0.000 0.232 SE 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SSE 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 S 0.000 0.000 0.232 0.464 0.093 0.000 0.000 0.000 0.000 0.788 SSW 0.000 0.000 0.649 0.464 0.000 0.000 0.000 0.000 0.000 1.113 SW 0.000 0.000 0.325 0.325 0.000 0.000 0.000 0.000 0.000 0.649 WSW 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 W 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.186 SUBTOTAL 0.000 0.046 3.015 2.783 0.788 0.093 0.000 0.000 0.000 6.725 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS C 146 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 145 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 3.88 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-18

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 1.623 1.299 0.742 0.232 0.000 0.000 0.000 3.989 NNE 0.000 0.000 1.577 3.061 1.763 0.928 0.093 0.000 0.000 7.421 NE 0.000 0.046 1.020 0.186 0.093 0.000 0.139 0.000 0.000 1.484 ENE 0.000 0.000 0.371 0.000 0.000 0.000 0.000 0.000 0.000 0.371 E 0.000 0.000 0.139 0.000 0.046 0.000 0.000 0.000 0.000 0.186 ESE 0.000 0.139 0.325 0.046 0.046 0.046 0.000 0.000 0.000 0.603 SE 0.000 0.000 0.510 0.046 0.000 0.000 0.000 0.000 0.000 0.557 SSE 0.000 0.000 0.649 0.278 0.046 0.000 0.000 0.000 0.000 0.974 S 0.000 0.139 2.226 2.273 0.093 0.000 0.000 0.000 0.000 4.731 SSW 0.000 0.093 2.690 2.041 0.000 0.000 0.000 0.000 0.000 4.824 SW 0.000 0.139 0.788 0.557 0.046 0.000 0.000 0.000 0.000 1.531 WSW 0.000 0.046 0.325 0.232 0.046 0.000 0.000 0.000 0.000 0.649 W 0.000 0.139 0.139 0.139 0.046 0.000 0.000 0.000 0.000 0.464 WNW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NW 0.000 0.093 0.232 0.139 0.278 0.186 0.000 0.000 0.000 0.928 NNW 0.000 0.046 0.278 0.603 0.603 0.093 0.000 0.000 0.000 1.623 SUBTOTAL 0.000 1.020 12.941 10.900 3.850 1.484 0.232 0.000 0.000 30.427 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS D 672 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 656 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 4.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-19

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 0.881 7.328 1.577 0.371 0.000 0.000 0.000 0.000 10.158 NNE 0.000 0.649 4.592 1.206 0.603 0.603 0.000 0.000 0.000 7.653 NE 0.000 0.510 0.417 0.139 0.000 0.046 0.000 0.000 0.000 1.113 ENE 0.000 0.186 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.371 E 0.000 0.186 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.325 ESE 0.000 0.046 0.278 0.046 0.046 0.000 0.000 0.000 0.000 0.417 SE 0.000 0.278 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.371 SSE 0.000 0.417 0.603 0.046 0.000 0.000 0.000 0.000 0.000 1.067 S 0.000 0.371 1.763 0.232 0.000 0.000 0.000 0.000 0.000 2.365 SSW 0.000 0.278 2.273 0.186 0.000 0.000 0.000 0.000 0.000 2.737 SW 0.000 0.464 2.041 0.093 0.000 0.000 0.000 0.000 0.000 2.597 WSW 0.000 0.371 0.788 0.139 0.046 0.000 0.000 0.000 0.000 1.345 W 0.000 0.325 0.464 0.046 0.000 0.000 0.000 0.000 0.000 0.835 WNW 0.000 0.371 0.603 0.000 0.000 0.000 0.000 0.000 0.000 0.974 NW 0.000 0.649 0.835 0.093 0.093 0.000 0.000 0.000 0.000 1.670 NNW 0.000 0.464 1.855 0.788 0.000 0.000 0.000 0.000 0.000 3.108 SUBTOTAL 0.000 6.447 24.119 4.638 1.252 0.649 0.000 0.000 0.000 37.106 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS E 817 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 800 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 2.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-20

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 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 0.232 4.035 0.325 0.046 0.000 0.000 0.000 0.000 4.638 NNE 0.000 0.696 3.850 0.093 0.000 0.000 0.000 0.000 0.000 4.638 NE 0.000 0.557 0.464 0.000 0.000 0.000 0.000 0.000 0.000 1.020 ENE 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 E 0.000 0.278 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.278 ESE 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SSE 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 S 0.000 0.093 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.278 SSW 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.139 W 0.000 0.000 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.186 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.232 NNW 0.000 0.139 0.417 0.139 0.000 0.000 0.000 0.000 0.000 0.696 SUBTOTAL 0.000 2.737 9.647 0.696 0.046 0.000 0.000 0.000 0.000 13.126 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS F 283 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 283 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 2.05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-21

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant JUL 1, 2004 - SEP 30, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NNE 0.000 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.186 NE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ENE 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.139 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.232 0.325 0.000 0.000 0.000 0.000 0.000 0.000 0.557 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2192 TOTAL HOURS OF STABILITY CLASS G 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 12 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2004/12/20 MEAN WIND SPEED = 1.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-22

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.091 0.137 0.000 0.000 0.000 0.228 NNE 0.000 0.000 0.000 0.137 0.182 0.137 0.000 0.000 0.000 0.455 NE 0.000 0.000 0.000 0.137 0.000 0.046 0.000 0.000 0.000 0.182 ENE 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.046 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 0.000 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.000 0.046 0.137 0.046 0.000 0.000 0.000 0.000 0.228 SW 0.000 0.000 0.091 0.319 0.091 0.000 0.000 0.000 0.000 0.501 WSW 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.091 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.046 0.000 0.000 0.046 0.000 0.000 0.000 0.091 NNW 0.000 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.137 SUBTOTAL 0.000 0.000 0.319 0.774 0.638 0.455 0.000 0.000 0.000 2.186 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 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 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 5.76 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-23

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.046 0.000 0.046 0.091 0.000 0.000 0.000 0.182 NNE 0.000 0.000 0.000 0.410 0.182 0.137 0.000 0.000 0.000 0.729 NE 0.000 0.000 0.046 0.091 0.091 0.046 0.000 0.000 0.000 0.273 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 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 0.046 0.091 0.046 0.000 0.000 0.000 0.000 0.182 SSW 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.137 SW 0.000 0.000 0.000 0.228 0.228 0.046 0.000 0.000 0.000 0.501 WSW 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.137 W 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.137 NNW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.091 SUBTOTAL 0.000 0.000 0.273 1.002 0.683 0.546 0.000 0.000 0.000 2.505 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS B 55 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 55 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 5.99 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-24

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 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 0.137 0.046 0.228 0.000 0.000 0.000 0.410 NNE 0.000 0.000 0.137 0.182 0.228 0.228 0.000 0.000 0.000 0.774 NE 0.000 0.000 0.182 0.182 0.182 0.091 0.000 0.000 0.000 0.638 ENE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.000 0.046 0.228 0.046 0.000 0.000 0.000 0.000 0.319 SSW 0.000 0.000 0.182 0.182 0.137 0.000 0.000 0.000 0.000 0.501 SW 0.000 0.000 0.182 0.182 0.228 0.046 0.000 0.000 0.000 0.638 WSW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.091 WNW 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.000 0.000 0.137 NW 0.000 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.137 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.911 1.184 1.047 0.729 0.000 0.000 0.000 3.871 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 5.52 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-25

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.091 1.230 0.592 0.592 1.093 0.000 0.000 0.000 3.597 NNE 0.000 0.137 1.275 1.412 1.093 1.002 0.046 0.000 0.000 4.964 NE 0.000 0.091 1.275 0.410 0.137 0.228 0.000 0.000 0.000 2.140 ENE 0.000 0.091 0.364 0.137 0.000 0.000 0.000 0.000 0.000 0.592 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.046 0.273 0.091 0.000 0.000 0.000 0.000 0.000 0.410 SSE 0.000 0.046 0.865 0.501 0.046 0.000 0.000 0.000 0.000 1.457 S 0.000 0.137 1.412 1.412 1.275 0.046 0.046 0.000 0.000 4.326 SSW 0.000 0.046 1.958 2.596 1.275 0.273 0.000 0.000 0.000 6.148 SW 0.000 0.000 1.184 1.685 0.638 0.228 0.000 0.000 0.000 3.734 WSW 0.000 0.137 0.729 1.002 0.273 0.046 0.000 0.000 0.000 2.186 W 0.000 0.000 0.319 0.273 0.273 0.319 0.046 0.000 0.000 1.230 WNW 0.000 0.046 0.137 0.182 0.273 0.455 0.000 0.000 0.000 1.093 NW 0.000 0.000 0.137 0.501 0.410 0.455 0.091 0.000 0.000 1.594 NNW 0.000 0.046 0.137 0.319 0.683 0.638 0.000 0.000 0.000 1.821 SUBTOTAL 0.000 0.956 11.475 11.111 6.967 4.781 0.228 0.000 0.000 35.519 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS D 782 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 780 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 4.75 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-26

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.006 0.546 3.142 1.093 0.228 0.091 0.000 0.000 0.000 5.106 NNE 0.008 1.002 4.098 1.412 0.455 0.046 0.000 0.000 0.000 7.021 NE 0.002 0.273 0.820 0.091 0.000 0.000 0.000 0.000 0.000 1.186 ENE 0.001 0.364 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.411 E 0.001 0.273 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.411 ESE 0.001 0.228 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.365 SE 0.001 0.182 0.228 0.046 0.000 0.000 0.000 0.000 0.000 0.456 SSE 0.002 0.182 0.774 0.228 0.000 0.091 0.000 0.000 0.000 1.277 S 0.005 0.592 2.641 0.956 0.546 0.228 0.000 0.000 0.000 4.969 SSW 0.007 0.501 4.053 2.596 0.865 0.137 0.000 0.000 0.000 8.159 SW 0.006 0.410 3.051 1.093 0.228 0.137 0.000 0.000 0.000 4.924 WSW 0.002 0.319 1.184 0.455 0.228 0.091 0.000 0.000 0.000 2.279 W 0.001 0.273 0.364 0.273 0.137 0.091 0.000 0.000 0.000 1.139 WNW 0.001 0.364 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.456 NW 0.001 0.273 0.592 0.182 0.046 0.091 0.000 0.000 0.000 1.185 NNW 0.002 0.455 0.501 0.273 0.137 0.046 0.000 0.000 0.000 1.413 SUBTOTAL 0.046 6.239 21.858 8.698 2.869 1.047 0.000 0.000 0.000 40.756 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS E 896 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 895 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 3.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-27

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.005 0.228 1.138 0.137 0.000 0.000 0.000 0.000 0.000 1.508 NNE 0.015 0.546 3.552 0.091 0.000 0.000 0.000 0.000 0.000 4.204 NE 0.005 0.546 0.865 0.000 0.000 0.000 0.000 0.000 0.000 1.417 ENE 0.001 0.182 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.411 E 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.091 ESE 0.001 0.137 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.183 SE 0.001 0.273 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.411 SSE 0.002 0.273 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.548 S 0.005 0.410 0.911 0.046 0.046 0.000 0.000 0.000 0.000 1.416 SSW 0.003 0.137 0.820 0.000 0.046 0.000 0.000 0.000 0.000 1.005 SW 0.003 0.364 0.592 0.000 0.000 0.000 0.000 0.000 0.000 0.960 WSW 0.001 0.046 0.319 0.000 0.000 0.000 0.000 0.000 0.000 0.366 W 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.137 WNW 0.000 0.000 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.137 NW 0.001 0.182 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.274 NNW 0.001 0.000 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.228 SUBTOTAL 0.046 3.415 9.381 0.364 0.091 0.000 0.000 0.000 0.000 13.297 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS F 292 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 292 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 1.96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-28

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

Sequoyah Nuclear Plant OCT 1, 2004 - DEC 31, 2004 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 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.091 NNE 0.000 0.000 0.410 0.000 0.000 0.000 0.000 0.000 0.000 0.410 NE 0.000 0.046 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.228 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.091 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.091 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.273 SSW 0.000 0.091 0.319 0.046 0.000 0.000 0.000 0.000 0.000 0.455 SW 0.000 0.000 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.273 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.364 1.457 0.046 0.000 0.000 0.000 0.000 0.000 1.867 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS G 41 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 41 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Sequoyah Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 9.25 AND 45.99 METERS WIND SPEED AND DIRECTION MEASURED AT 9.73 METER LEVEL DATE PRINTED: 2005/02/03 MEAN WIND SPEED = 1.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS A1-29

Attachment 2.0 Deviations from ODCM Controls/Surveillance Requirements Date ODCM Description of Deviation Requirement June 10, 1/2 1.1.1 Steam generator blowdown radiation monitors 2-RM-90-120/121 2004 Table 1.1-1 were removed from service for DCN 21311 (flow switch Item 1.b replacement). The monitor was declared operable on June 10, Action 31. 2004 at 1755 Eastern Daylight Time after completion of activity.

On June 24, 2004 Operations discovered a jumper installed in relay rack for the radiation monitor. This jumper would have prevented a high radiation signal from radiation monitors 2-RM-90-120/121 from closing the release path isolation valve. This jumper was installed on May 20, 2005 by operations as part of removing the radiation monitor from service. The jumper was not removed when the radiation monitor was returned to service.

The monitor was declared inoperable and the jumper was removed. Maintenance personnel performed a functional test and the monitor was declared operable on June 25, 2004.

Compensatory sampling was not performed for the inoperable monitor during the June 10-24, 2004 time period.

A2-1

Attachment 3.0 Radiation Monitors Inoperable for Greater than 30 days The Steam generator blowdown radiation monitors 2-RM-90-120/121 were out of service from May 20, 2004 to June 25, 2004 for DCN 21311 (flow switch replacement).

The monitor was declared operable on 6/10/04 and compensatory sampling was stopped. On June 24, 2004 jumpers were discovered which defeated auto termination of the release in the event of a high radiation signal. The monitor was declared inoperable and the jumper was removed. Maintenance personnel performed a functional test and the monitor was declared operable on June 25, 2004.

A3-1

ML051230358

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