ML031220172

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Annual Radioactive Effluent Release Report - January Through December 2002
ML031220172
Person / Time
Site: Browns Ferry  Tennessee Valley Authority icon.png
Issue date: 04/30/2003
From: Abney T
Tennessee Valley Authority
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML031220172 (169)
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Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 April 30, 2003 10 CFR 50.36a(a) (2) 10 CFR 50, Appendix I,Section IV.B.1 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop: OWFN, P1-35 Washington, D.C. 20555-0001 Gentlemen:

In the Matter of ) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - UNITS 1, 2, AND 3 -

ANNUAL RADIOACTIVE EFFLUENT RELEASE (ARER) REPORT -

JANUARY THROUGH DECEMBER 2002 In accordance with 10 CFR 50.36a(a)(2); 10 CFR 50, Appendix I, Section IV.B; and the BFN Technical Specification (TS) 5.6.3, TVA is submitting the BFN ARER report for January through December 2002. Also, in accordance with the BFN Offsite Dose Calculation Manual (ODCM) Section 1.1.1, Action (b), and Section 1.1.2, Action (c), TVA is providing the BFN's Inoperable Radioactive Effluent Instrumentation Report. However, TVA is not submitting any revision of the ODCM since no ODCM changes were made during this reporting period.

This report includes the following:

Radiological Impact Assessment Report (Enclosure 1)

Meteorological Data Tables (Enclosure 2)

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U.S. Nuclear Regulatory Commission Page 2 April 30, 2003 Effluent and Waste Disposal Annual Report (Enclosure 3)

Inoperable Radiological Effluent Instrumentation Report (Enclosure 4)

If you have any questions concerning this submittal, please contact me at (256) 729-2636.

2ncerelY T. E. Abn Manager e sing and dustry Affai s Enclosur cc (w/o Enc es (via NRC Electronic Distribution)

Mr. Stephen J. Cahill, Branch Chief U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street S.W., Suite 23T85 Atlanta, Georgia 30303-8931 NRC Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, Alabama 35611-6970 Mr. Kahtan N. Jabbour, Senior Project Manager U.S. Nuclear Regulatory Commission (MS 08G9)

One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 Mr. Ronald Sanacore (w/Enclosures)

American Nuclear Insurers Town Center, Suite 300S 29 South Main Street West Hartford, Connecticut 06107-2445

ENCLOSURE 1 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1, 2, AND 3 RADIOLOGICAL IMPACT ASSESSMENT REPORT JANUARY THROUGH DECEMBER 2002 TABLE OF CONTENTS I. Introduction E1-2 II. Dose Limits El-2 III. Dose Calculations E1-3 IV. Doses from Airborne Effluents E1-3 V. Doses from Liquid Effluents EI-5 VI. Population Doses E1-5 VII. Offsite Direct Radiation Dose E1-6 VIII. Dose to a Member of the Public Inside the Site Boundary E1-6 IX Total Dose El-7 El-l

TABLE OF CONTENTS (Continued)

Listing of Tables Table I - Doses from Airborne Effluents - First Quarter El-8 Table 2 - Doses from Airborne Effluents - Second Quarter El-9 Table 3 - Doses from Airborne Effluents - Third Quarter El-10 Table 4 - Doses from Airborne Effluents - Fourth Quarter El-l1 Table 5 - Doses from Liquid Effluents - First Quarter EI-12 Table 6 - Doses from Liquid Effluents - Second Quarter El-13 Table 7 - Doses from Liquid Effluents - Third Quarter E1-14 Table 8 - Doses from Liquid Effluents - Fourth Quarter EI-15 Table 9 - Total Dose from Fuel Cycle EI-16 Table 10 - Joint Frequency Distribution in Percent for Ground E2 Level Releases - First Quarter E2-9 Table 11 - Joint Frequency Distribution in Percent for Ground E2 Level Releases - Second Quarter E2-17 Table 12 - Joint Frequency Distribution in Percent for Ground E2 Level Releases - Third Quarter E2-25 Table 13 - Joint Frequency Distribution in Percent for Ground E2 Level Releases - Fourth Quarter E2-33 Table 14 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Ground Level Portion) - First Quarter E2-41 Table 15 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Ground Level Portion) - Second Quarter E2-49 Table 16 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Ground Level Portion) - Third Quarter E2-57 Table 17 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Ground Level Portion) - Fourth Quarter E2-65 Table 18 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Elevated Level Portion) - First Quarter E2-73 El-la

TABLE OF CONTENTS (Continued)

Listing of Tables Table 19 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Elevated Level Portion) - Second Quarter E2-81 Table 20 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Elevated Level Portion) - Third Quarter E2-89 Table 21 - Joint Frequency Distribution in Percent for Split Level E2 Releases (Elevated Level Portion) - Fourth Quarter E2-97 Table 22 - Joint Frequency Distribution in Percent for Elevated E2 Releases - First Quarter E2-105 Table 23 - Joint Frequency Distribution in Percent for Elevated E2-106-Releases - Second Quarter E2-113 Table 24 - Joint Frequency Distribution in Percent for Elevated E2-114-Releases - Third Quarter E2-121 Table 25 - Joint Frequency Distribution in Percent for Elevated E2-122-Releases - Fourth Quarter E2-129 El-lb

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 I. INTRODUCTION Potential doses to the "maximum exposed individual" and the population around Browns Ferry are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). The methodology for determining plant releases for the reporting period used to estimate dose is specified in Sections 6 and 7 of the ODCM. Dispersion of radioactive effluents in the environment is estimated using meteorological data and river flow measured during the period. In this report, the doses resulting from releases are described and compared to limits established for Browns Ferry.

II. 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 air dose limits in areas at and beyond the Site Boundary due to noble gases released in gaseous effluents per unit are:

< 5 mrad per quarter and

< 10 mrad per year for gamma radiation

- and -

< 10 mmd per quarter and

< 20 mrad per year for beta radiation.

The dose limits to a Member of the Public in an unrestricted area from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives > 8 days released in gaseous effluents for each unit are:

< 7.5 mrem per quarter and

< 15 mrem per year to any organ.

The dose or dose commitment to a Member of the Public from radioactive material in liquid effluents released to unrestricted areas are:

< 1.5 mrem per quarter and

< 3 mrem per year to the total body,

- and -

< 5 mrem per quarter and

< 10 mrem per year to any organ.

The limit for the total effective dose equivalent to an individual Member of the Public inside the site boundary is:

100 mrem per year.

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

< 25 mrem per year to the whole body,

< 75 mrem per year to the thyroid,

- and -

< 25 mrem per year to any other organ.

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002

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

The expected dose to actual individuals is lower. The calculated doses are presented in Tables 1, 2, 3, 4, 5, 6, 7, 8, and 9.

IV. DOSES FROM AIRBORNE EFFLUENTS For airborne effluents, Members of 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 consumed by milk and beef animals.

Airborne Release Points There are four monitored release points from Browns Ferry Nuclear Plant: the turbine building, the radwaste building, the reactor building, and the stack.

Releases from the turbine building 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 45 meters, and are presented for each quarter in Tables 10, 11, 12, and 13.

Releases from the radwaste and reactor buildings are considered split-level releases. Portions of the release are treated as ground-level while other portions are considered elevated depending on the ratio of the vertical exit velocity to the horizontal wind speed. The split-level dispersion approach is implemented using a model that requires twvo complete quarterly JFDs for each effluent vent, one for the ground-level releases and one for the elevated releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10 meters above ground-level and from the vertical temperature difference between 10 and 45 meters. The elevated portion of the split-level JFD is based on Nwind speeds and direction measurements at the 45 meter level and the vertical temperature difference between 45 and 91 meters. Both of these JFDs are given for each quarter in Tables 14, 15, 16, 17, 18, 19, 20, and 21.

Releases from the stack are considered to be elevated releases. The JFDs for elevated releases are based on wind directions and wind speeds measured at 91 meters and the vertical temperature difference between 45 and 91 meters, and are given for each quarter in Tables 22, 23, 24, and 25.

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Meteorolozical Data Meteorological variables at BFN are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 45, and 91 meters above the ground. Quarterly JFDs are calculated for each release point using the appropriate levels of meteorological data. A quarterly JFD gives the percentage of the time 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 1.6 m/s (3.5 mph). Stability classes are determined from the vertical temperature difference between two measurement levels.

The generally open terrain around BFN does not cause any significant effects on the transport and dispersion of gaseous effluents from the plant. Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (30-60 meters). Between 30 and 80 kilometers the hills become larger to the north and south, and mountainous to the east and northeast. The Tennessee River/Wheeler Lake may have a minor effect on transport and dispersion in the immediate vicinity of BFN during periods of winds with a southerly component, overcast skies, and relatively high wind speeds. Also, the lower layer (10-45 meters) stability class tends to be more stable. However, during this infrequent condition, dose estimates will be conservative.

External Exposure Dose Dose calculated for maximum external air dose (gamma-air and beta-air ) are made for points at and beyond the unrestricted area boundary as described in the BFN ODCM. The highest of these doses is then selected.

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

Organ Dose Dose to an organ due to releases of airborne effluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into three possible contributing pathways: ingestion of cowv/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each 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 was consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden was 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.

The maximum organ dose, thyroid dose, and total body dose from airborne effluents are presented in Tables 1, 2, 3, and4.

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 V. 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 concentration of radionuclides in the Tennessee River are calculated by a computer model which uses measured hydraulic data downstream of BFN. 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. The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the BFN ODCM.

Liquid Release Points and River Data Radionuclide concentrations in the Tennessee River are calculated assuming that releases in liquid effluents are continuous. When necessary, liquid releases from BFN, located at Tennessee River Mile 294, 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 (Wheeler Dam), at Tennessee River Mile 283.0.

Doses are calculated for locations within a 50 mile radius downstream of the plant site. The maximum potential recreation dose is calculated for a location immediately downstream from the plant's release point.

The maximum exposed 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. The maximum exposed individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply [West Morgan - East Lawrence (WMVIEL)]. This could be interpreted as indicating that the maximum exposed individual, as assumed for liquid releases from Browns Ferry, is an individual who obtains all of his drinking water at WMEL, consumes fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just downstream of the plant's release point. Doses calculated for the maximum exposed individual due to liquid effluents for each quarter in the period are presented in Tables 5, 6, 7, and 8, along with the average river flows past the plant site for the periods.

VI. POPULATION DOSES Population doses due to airborne effluents are calculated for an estimated 627,000 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 are calculated assuming that each individual consumed milk, vegetables, and meat produced within the sector in which the individual resides.

Population doses 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 historical recreational data on the number of shoreline visits at downstream locations.

Population doses calculated for airborne and liquid effluents are presented in Tables 1, 2, 3, 4, 5, 6, 7, and 8.

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 VII. OFFSITE DIRECT RADIATION DOSE External ganmma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP). The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 16.0 inrem/quarter at onsite (at or near the site boundary) stations and approximately 14.3 mrem/quarter at offsite stations or approximately 1.7 mrem/quarter higher onsite than at offsite stations. This difference is consistent with levels measured for pre-operation and construction phases of TVA nuclear plants where the average radiation levels onsite were generally 2-6 nirem/quarter higher than the levels offsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in TLD readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous effluents.

VIII. DOSE TO A MEMBER OF THE PUBLIC INSIDE THE SITE BOUNDARY Pursuant to ODCM section 7.7.5, a review was performed to determine the highest dose to a member of the public in the site boundary. This review assumed that onsite TVA employees engaged in work activities not associated with nuclear power electric generation were considered as members of the public. The dose to a member of the public consists of the sum of dose commitments from effluent releases as well as any direct radiation dose. The effluent dose commitment is negligible compared to the direct radiation dose.

The direct radiation dose was determined from area TLDs located onsite. It consisted of gamma dose from the plume, ground contamination and from equipment sources (i.e., tanks, turbine shine, radioactive material storage areas, etc.). The highest direct radiation dose accounting for background and occupancy was 5.0 mrem during 2002.

The total annual dose commitment to the member of the public for 2002 is 5.0 mrem; the direct radiation dose while in the site boundary. It can be concluded that the dose limit for a member of the public inside the site boundary as specified in 10 CFR 20.1301 was not exceeded.

El-6

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 IX. TOTAL DOSE To determine compliance with 40 CFR 190, annual total dose contributions to the maximum exposed individual from BFN radioactive effluents and all other nearby uranium fuel cycle sources are considered The annual dose to any organ other than thyroid for the maximum exposed individual is conservatively calculated 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 REMP. This dose is compared to the 40 CFER 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum exposed 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 REMP. This dose is compared to the 40 CFR 190 limit for thyroid dose to determine compliance.

Total dose from the fuel cycle is presented in Table 9.

El-7

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 1 Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 5.8E-06 mrad 5 mrad <1 % S/6800 meters Beta Air 9.3E-06 mrad 10 mrad <1 % S/6800 meters Submersion Total Body 2.7E-04 mrem NA NA N/2000 meters Skin 3.2E-04 mrem NA NA N!2000 meters Organ Doses Child/Bone 1.4E-02 mrem 7.5 mrem <1 % NNW/1770 meters Child/Thyroid 4.1E-02 mrem 7.5 mrem <1 % NNW/1770 meters Child/Total Body 1.2E-02 mrem 7.5 mrem <1 % NNW/1770 meters Population Doses Total Body Dose 1.9E-02 man-rem Maximum Organ Dose (organ) 8.JE-02 man-rem (thyroid)

Populationdoses can be comparedto the naturalbackground dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yrfor naturalbackground).

E1-8

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 2 Doses from Airborne Effluents Second Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 1.1E-05 mrad 5 mrad <1 % WNW/5500 meters Beta Air 3.0E-05 mrad 10 mrad <1 % WNW/5500 meters Submersion Total Body 9.4E-04 mrem NA NA NNW/1639 meters Skin L.l03 mrem NA NA NNW/1639 meters Organ Doses Child/Liver 8.3E-03 mrem 7.5 mrem <1 % NNW/1770 meters Child/Thyroid 2.4E-01 mrem 7.5 mrem 3% NNW/1770 meters Child /Total Body 4.6E-03 mrem 7.5 mrem <1 % NNW/1770 meters Population Doses Total Body Dose 1.3E-02 man-rem Maximum Organ Dose (organ) 7.7E-01 man-rem (thyroid)

Populationdoses can be compared to the naturalbackground dose for the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yrfor natural background).

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 3 Doses from Airborne Effluents Third Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 9.1E-04 mrad 5 mrad <1% NNW/5600 meters Beta Air 1.2E-03 mrad 10 mrad <1 % NNW/5600 meters Submersion Total Body 1.6E-03 mrem NA NA NNW/1639 meters Skin 1.9E-03 mrem NA NA NNW/1639 meters Organ Doses Child/Bone 1.6E-02 mrem 7.5 mrem <1% NNW/1770 meters Child/Thyroid 1.9E-02 mrem 7.5 mrem <1 % NNW/1770 meters Adult/Total Body 6.1E-03 mrem 7.5 mrem <1% NNW/1770 meters Population Doses Total Body Dose 3.2E-02 man-rem Maximum Organ Dose (organ) 7.9E-02 man-rem (thyroid)

Populationdoses can be compared to the naturalbackground dose for the entire 50-milepopulation of about 70,044 man-remlyear (based on 90 mrem/yrfor naturalbackground).

EI-10

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Tablc 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 5.3E-04 mrad 5 mrad <1 % SSE/7800 meters Beta Air 5.7E-04 mrad 10 mrad <1 % SSE/7800 meters Submersion Total Body 2.8E-03 mrem NA NA NNW/1639 meters Skin 3.3E-03 mrem NA NA NNW/1639 meters Organ Doses Child/ Bone 4.4E-02 mrem 7.5 nirem <1 % NNW/1770 meters Child/Thyroid 6.5E-01 mrem 7.5 mrem <1 % NNW/1770 meters Child /Total Body 2.1E-02 mrem 7.5 nrem <1 % NNW/1770 meters Population Doses Total Body Dose 8.2E-02 man-rem Maximum Organ Dose (organ) 2. lE+00 man-rem (thyroid)

Populationdoses can be comparedto the naturalbackgrounddosefor the entire 50-mile population of about 70,044 man-rem/year (based on 90 mrem/yrfor naturalbackground).

El-ll

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 5 Doses from Liquid Effluents First Quarter*

Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mnrem 0%

Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

  • No liquid releases were made this quarter.

Average Riverflow past BFN (cubic feet per second): No Release Population Doses Total Body Dose 0 man-rem Maximum Organ Dose (organ) 0 man-rem (organ)

Populationdoses can be comparedto the naturalbackground dose for the entire SO-mile population of about 70,044 man-rem/year (based on 90 mrem/yrfor naturalbackground).

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 6 Doses from Liquid Effluents Second Quarter*

Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mrem 0%

Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 . -

Total 0 5 mrem 0%

  • No liquid releases were made this quarter.

Average Riverflow past BFN (cubic feet per second): No Release Population Doses Total Body Dose 0 man-rem Maximum Organ Dose (organ) 0 man-rem (organ)

Populationdoses can be comparedto the natural background dosefor the entire 50-mile population of about 70,044 man-ren/year (based on 90 mrem/yr for naturalbackground).

EI-13

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 7 Doses from Liquid Effluents Third Quarter Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 1.5 mrem 0%

Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

  • No liquid releases were made this quarter.

Average Riverflow past BFN (cubic feet per second): No Release Population Doses Total Body Dose 0 man-rem Maxmum Organ Dose (organ) 0 man-rem (organ)

Populationdoses can be comparedto the naturalbackground dosefor the entire 50-mile population of about 70,044 man-rem/year (basedon 90 mrem/yrfor naturalbackground).

EI-14

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 Table 8 Doses from Liquid Effluents Fourth Quarter Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Total Body Fish Ingestion 0 Recreation 0 Water Ingestion 0 l Total 0 1.5 mrem 0%

Liver Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mremr 0%

Thyroid Fish Ingestion 0 Recreation 0 Water Ingestion 0 Total 0 5 mrem 0%

  • No liquid releases were made this quarter.

Average Riverflow past BFN (cubic feet per second): No Release Population Doses Total Body Dose 0 man-rem Maximum Organ Dose (organ) 0 man-rem (organ)

Populationdoses can be comparedto the naturalbackground dose for the entire SO-mile population of about 70,044 man-rem/year (based on 90 mrem/yrfor naturalbackground).

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 2002 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 2.7E-04 9.4E-04 1.6E-03 2.8E-03 Critical organ dose (air) 1.4E-02 8.3E-03 1.6E-02 4.4E-02 Total body dose (liquid) 0 0 0 0 Maximum organ dose (liquid) 0 0 0 0 Direct Radiation Dose 0 0 0 0 Total 1.4E-02 9.2E-03 1.8E-02 4.7E-02 Cumulative Total Dose (mrem)

(Total body or any other organ) 8.8E-02 Annual Dose Limit (mrem) 2.5E+01 Percent of Limit <1%

Thyroid Dose (mrem)

Total body air submersion 2.7E-04 9.4E-04 1.6E-03 2.8E-03 Thyroid dose (airborne) 4.1E-02 3.4E-01 l.9E-02 6.5E-01 Total bodv dose (liquid) 0 0 0 0 Thyroid dose (liquid) 0 0 0 0 Direct Radiation Dose 0 0 0 0 Total 4.1E-02 3.7E-01 2.1E-02 6.5E-01 Cumulative Total Dose (Thyroid) mrem 9.6E-01 Annual Dose Limit (mrem) 7.5E+01 Percent of Limit = 1.3 %

E1-16

ENCLOSURE 2 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1, 2, AND 3 METEOROLIGICAL DATA TABLES JANUARY THROUGH DECEMBER 2002 E2-1

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 10 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FIRST QUARTER E2-2

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.236 0.567 0.142 0.000 0.000 0.946 NNE 0.000 0.000 0.000 0.095 0.095 0.331 0.095 0. 000 0. 000 0.615 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0. 000 ENE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 ESE 0.000 0. 000 0.000 0.000 0.000 0.095 0.000 0. 000 0.000 0.095 SE 0.000 0.000 0.047 1.040 0.473 0.000 0.000 0.000 0.000 1.560 SSE 0.000 0.000 0.095 0.615 0.047 0.000 0.000 0.000 0.000 0.757 S 0.000 0.000 0.047 0.709 0.378 0.000 0.000 0. 000 0.000 1 .135 SSW 0.000 0.000 0.189 0.5 67 0.095 0.000 0. 000 0.000 0.000 0.851 SW 0.000 0. 000 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.095 WSW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.095 W 0.000 0.000 0. 000 0.095 0.142 0.095 0.047 0.000 0.000 0.378 WNW 0.000 0.000 0.000 0.047 0.095 0.615 0.284 0. 000 0.000 1.040 NW 0.000 0.000 0.000 0.000 0.047 0.804 0.189 0. 000 0.000 1.040 NNW 0.000 0. 000 0.000 0.000 0.189 0.757 0.615 0.000 0. 000 1.560 SUBTOTAL 0.000 0. 000 0.473 3.215 1.844 3.262 1.371 0. 000 0.000 10. 165 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS A 215 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 215 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 7.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-3

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH) 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24 .5 TOTAL DIRECTION CALM 0.6-1.4 0.000 0.000 0. 000 0.047 0.142 0.000 0.000 0.000 0.189 N 0.000 0.000 0.000 0.000 0.426 0.095 0. 000 0.000 0.000 0.520 NNE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 NE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 ENE 0.000 0.000 0.000 0.047 0.000 0.000 0. 000 0.000 0.000 0.047 E 0. 000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 ESE 0. 000 0.000 0.047 0.236 0.047 0.000 0.000 0.000 0. 000 0.331 SE 0. 000 0.000 0.189 0.142 0.000 0.000 0.000 0.000 0.000 0.331 SSE 0.000 0.000 0.142 0.047 0.047 0.047 0.000 0.000 0. 000 0.284 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 0.047 0.000 0.000 0.000 0.000 0.000 0. 000 0.047 SW 0.000

0. 000 0.000 0.047 0.047 0.047 0.000 0.000 0.000 0.000 0.142 WSW 0.000 0.000 0.142 0.000 0.047 0.047 0.000 0.000 0.236 W 0. 000 0.000 0.000 0.047 0.142 0.189 0.331 0.000 0. 000 0.709 WNW 0.000
0. 000 0.000 0.000 0.047 0.000 0.236 0.189 0.000 0.000 0.473 NW
0. 000 0.000 0.000 0.000 0.000 0.189 0.000 0.000 0.000 0.189 NNW 0.000 0.000 0.473 0.757 0.804 0.993 0.567 0.000 0.000 3.593 SUBTOTAL TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS B 76 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 76 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 7.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-4

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.142 0.000 0.000 0.000 0.000 0.142 NNE 0.000 0.000 0.000 0.000 0.331 0.095 0.000 0.000 0.000 0.426 NE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 ENE 0. 000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0. 000 0.000 0.000 0.047 0.000 0. 000 0. 000 0.000 0.000 0.047 SE 0. 000 0.000 0.047 0.284 0.047 0. 000 0.000 0.000 0.000 0.378 SSE 0.000 0.000 0.095 0.095 0.047 0. 000 0.000 0.000 0.000 0.236 S 0.000 0.000 0.095 0.189 0.000 0.000 0.000 0.000 0.000 0.284 SSW 0.000 0.000 0.000 0.095 0.000 0.047 0.000 0.000 0.000 0.142 SW 0.000 0.000 0.095 0.000 0.000 0. 000 0.000 0. 000 0.000 0.095 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 0.047 0.095 0. 000 0.000 0. 000 0.000 0.142 WNW 0.000 0.000 0.000 0.000 0.095 0.142 0.236 0.095 0.000 0.567 NW 0.000 0.000 0.000 0.047 0.000 0.236 0.189 0.000 0.000 0.473 NNW 0.000 0.000 0.000 0.047 0.000 0.331 0.095 0.000 0.000 0. 473 SUBTOTAL 0.000 0.000 0.331 0.851 0.757 0.946 0.520 0.095 0.000 3.499 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2 115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 8.02 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-5

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.142 0.426 0.662 2.364 0.047 0.047 0.000 3.688 NNE 0.000 0.000 0.331 0.709 1.040 0.757 0.000 0.000 0.000 2.837 NE 0.000 0.000 0.236 0.520 0.757 0.378 0.000 0.000 0.000 1.891 ENE 0.000 0.047 0.331 0.520 0.189 0. 000 0.000 0.000 0.000 1.087 E 0.000 0.000 0.284 0.236 0.142 0.047 0.000 0.000 0.000 0.709 ESE 0.000 0.095 0.189 0.236 0.142 0.142 0.000 0.000 0.000 0.804 SE 0.000 0.000 0.520 0.709 0.189 0.284 0.000 0.000 0. 000 1.702 SSE 0.000 0.000 0.615 0.5 67 0.047 0. 000 0.000 0.000 0.000 1.229 S 0.000 0.000 0.378 0.189 0.473 0.142 0.000 0. 000 0.000 1. 182 SSW 0.000 0.000 0.331 0.331 0.000 0.047 0.000 0.000 0.000 0.709 SW 0.000 0.000 0.142 0.142 0.000 0.047 0.000 0.000 0. 000 0.331 WSW 0.000 0.000 0.236 0.095 0.142 0.142 0.000 0.000 0.000 0.615 W 0.000 0.000 0.142 0.284 0.520 0. 662 0.047 0. 000 0.000 1. 655 WNW 0.000 0.000 0.095 0.142 0.236 0.804 1.229 0.142 0.000 2.648 NW 0.000 0.000 0.095 0.236 0.473 2.270 1.986 0.142 0.000 5.201 NNW 0.000 0.000 0.095 0.378 0.709 2. 128 0.473 0.047 0.000 3.830 SUBToTAL 0.000 0.142 4.161 5.721 5.721 10.213 3.783 0.378 0.000 30.118 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS D 641 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 637 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 7.73 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-6

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.426 0.567 0.426 0.331 0.000 0.000 0.000 1.749 NNE 0.000 0.000 0.284 0.331 0.426 0.142 0. 000 0. 000 0.000 1. 182 NE 0.000 0.000 0.142 0.615 0.236 0.047 0. 000 0.000 0.000 1.040 ENE 0.000 0.000 0.142 0.095 0.142 0.000 0.000 0.000 0.000 0.378 E 0.000 0.000 0.473 0.095 0.047 0.000 0.000 0.000 0.000 0.615 ESE 0.000 0.000 0.993 0.284 0.142 0.000 0.000 0.000 0.000 1.418 SE 0.000 0.000 1.087 0.615 0.236 0.047 0.000 0. 000 0.000 1.986 SSE 0.000 0.095 0.898 1.466 0. 095 0.189 0.000 0. 000 0. 000 2.742 S 0.000 0.095 0.851 2.175 1>182 0.709 0.000 0.000 0.000 5.012 SSW 0.000 0.047 0.662 0.709 0.189 0.142 0. 000 0.000 0. 000 1.749 SW 0.000 0.047 0.426 0.047 0.047 0.047 0.000 0. 000 0.000 0.615 WSW 0.000 0. 000 0.520 0.095 0. 000 0.047 0.000 0.000 0. 000 0.662 W 0.000 0.047 0.520 0.426 0.473 0.000 0.000 0. 000 0.000 1.466 WNW 0.000 0.000 0. 000 0.000 0.236 0.236 0.000 0. 000 0.000 0.473 NW 0.000 0.047 0.284 0.426 0.378 0.520 0.047 0.000 0.000 1.702 NNW 0.000 0.047 0.189 0.757 0.520 0.331 0.047 0.000 0.000 1.891 SUBTOTAL 0.000 0.426 7.896 8.700 4.775 2.790 0.095 0.000 0. 000 24. 681 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS E 525 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 522 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 4.65 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-7

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18 .5-24.4 >=24 .5 TOTAL N 0.004 0.047 0.615 0.567 0.000 0. 000 0.000 0.000 0.000 1.233 NNE 0.001 0. 000 0.236 0.378 0.095 0. 000 0.000 0.000 0.000 0.711 NE 0.001 0. 000 0.236 0.142 0.047 0. 000 0.000 0. 000 0. 000 0.427 ENE 0.003 0.000 0.520 0.095 0.047 0.000 0.000 0.000 0.000 0.665 E 0.003 0.047 0.473 0.567 0. 000 0. 000 0.000 0.000 0.000 1.090 ESE 0.002 0.047 0.378 0.047 0.000 0.000 0.000 0.000 0.000 0.475 SE 0.010 0.095 1.702 0.567 0.047 0.000 0.000 0.000 0.000 2.422 SSE 0.010 0.142 1.513 0.378 0.236 0.047 0.000 0.000 0.000 2.326 S 0.004 0.189 0.473 1.135 0.898 0.993 0. 000 0.000 0.000 3. 692 SSW 0.002 0.142 0.236 0.331 0.236 0.047 0.000 0.000 0.000 0.995 SW 0.001 0.095 0.095 0.095 0.000 0.000 0.000 0. 000 0.000 0.285 WSW 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.048 W 0.001 0. 095 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.095 WNW 0.001 0.000 0.095 0.047 0.000 0. 000 0.000 0.000 0.000 0.142 NW 0.001 0.000 0.142 0.095 0.095 0.000 0.000 0. 000 0.000 0.332 NNW 0.003 0.142 0.331 0.898 0.095 0.000 0.000 0.000 0.000 1.468 SUBTOTAL 0.047 1.087 7.045 5.343 1.797 1.087 0.000 0. 000 0.000 16.407 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS F 350 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 347 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 3.78 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-8

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.236 0.426 0.378 0.000 0. 000 0.000 0. 000 0. 000 1.040 NNE 0.000 0.095 0.189 0.142 0.000 0.000 0.000 0. 000 0. 000 0.426 NE 0.000 0. 000 0.047 0.000 0.000 0. 000 0.000 0.000 0. 000 0.047 ENE 0. 000 0.000 0.284 0.000 0.000 0. 000 0.000 0.000 0. 000 0.284 E 0. 000 0.000 0.047 0.000 0.000 0. 000 0.000 0.000 0. 000 0.047 ESE 0.000 0.095 0.047 0.047 0.000 0.000 0.000 0.000 0. 000 0.189 SE 0.000 0.047 0.898 0.047 0.047 0.000 0.000 0.000 0. 000 1.040 SSE 0. 000 0.662 3.546 0.804 0.047 0.000 0.000 0. 000 0. 000 5.059 S 0.000 0.095 1.087 0.615 0.331 0.000 0.000 0.000 0. 000 2. 128 SSW 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.047 0.000 0.000 0. 000 0.000 0.000 0. 000 0.047 WSW 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 W 0. 000 0.095 0.000 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.095 WNW 0. 000 0.047 0.142 0.000 0.000 0.000 0.000 0.000 0.000 0.189 NW 0.000 0.095 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.142 NNW 0.000 0.047 0.615 0.095 0.047 0. 000 0.000 0.000 0. 000 0.804 SUBTOTAL 0. 000 1.513 7.423 2. 128 0.473 0. 000 0.000 0.000 0.000 11. 537 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2125 TOTAL HOURS OF STABILITY CLASS G 244 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 244 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2115 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 2.73 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-9

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 11 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES SECOND QUARTER E2-10

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.142 1.609 0.047 0.000 0.000 1.846 NNE 0.000 0.000 0.000 0.000 0.142 0.663 0. 000 0.000 0. 000 0.805 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0. 000 0.047 ENE 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.473 0.947 0.237 0.000 0.000 0.000 1. 656 SE 0. 000 0.000 0.473 2.366 0.426 0.095 0.000 0.000 0. 000 3.360 SSE 0. 000 0.000 0.757 0.615 0.095 0.000 0. 000 0.000 0.000 1.467 S 0. 000 0.000 1.041 0.899 0. 000 0.000 0 .000 0.000 0.000 1.940 SSW 0.000 0.000 0.237 0.805 0.000 0.000 0. 000 0.000 0.000 1.041 SW 0.000 0.000 0.047 0.331 0.000 0.000 0.000 0.000 0.000 0.379 WSW 0.000 0.000 0.000 0.331 0.000 0.047 0. 000 0.000 0.000 0.379 W 0.000 0.000 0.000 0. 095 0.095 0.000 0. 000 0.000 0.000 0.189 WNW 0.000 0.000 0.000 0.047 0.095 0.331 0.047 0.000 0.000 0.521 NW 0. 000 0.000 0.000 0.047 0.142 0.473 0. 095 0.047 0.000 0.805 NNW 0. 000 0. 000 0.000 0.047 0.047 0.284 0.142 0.000 0.000 0.521 SUBTOTAL 0.000 0.000 2.556 6.105 2.177 3.739 0.379 0.047 0.000 15.002 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS A 317 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 317 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 6.09 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-11

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.189 0. 000 0. 000 0.000 0.237 NNE 0.000 0.000 0. 000 0.047 0.095 0.189 0.047 0.000 0.000 0.379 NE 0. 000 0.000 0. 000 0. 000 0.000 0.189 0.000 0.000 0.000 0.189 ENE 0.000 0.000 0. 000 0. 000 0.047 0.000 0.000 0. 000 0.000 0.047 E 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 ESE 0.000 0.000 0. 000 0.284 0.095 0. 000 0.000 0. 000 0.000 0.379 SE 0.000 0. 000 0.237 0.189 0.095 0. 000 0.000 0.000 0.000 0.521 SSE 0.000 0.000 0.284 0.047 0.000 0. 000 0.000 0.000 0.000 0.331 S 0.000 0.000 0.237 0.237 0.047 0.000 0. 000 0.000 0.000 0.521 SSW 0.000 0.000 0.379 0.331 0. 000 0. 000 0. 000 0.000 0.000 0.710 SW 0.000 0.000 0.189 0.331 0.000 0. 000 0.000 0.000 0.000 0.521 WSW 0.000 0.000 0.095 0.473 0. 000 0.047 0.000 0. 000 0. 000 0.615 W 0.000 0.000 0. 000 0.142 0.000 0.047 0. 000 0. 000 0.000 0.189 WNW 0.000 0.000 0.047 0.000 0.047 0.047 0.000 0. 000 0.000 0.142 NW 0.000 0.000 0. 000 0.000 0.095 0.189 0.047 0. 000 0.000 0.331 NNW 0.000 0.000 0. 000 0.000 0.047 0. 000 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 1.467 2. 130 0.568 0.899 0.095 0. 000 0.000 5.159 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS B 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 109 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 5.22 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-12

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.189 0. 000 0.000 0. 000 0.189 NNE 0.000 0.000 0. 000 0. 000 0.095 0.047 0.000 0.000 0.000 0.142 NE 0.000 0. 000 0.000 0.000 0.000 0.142 0. 000 0.000 0.000 0.142 ENE 0.000 0. 000 0.000 0.095 0.142 0.000 0.000 0.000 0.000 0.237 E 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.047 0.284 0.095 0.047 0. 000 0.000 0.000 0.473 SE 0.000 0.000 0.142 0.142 0.047 0.000 0. 000 0.000 0.000 0.331 SSE 0.000 0.000 0.331 0.142 0.000 0.000 0. 000 0.000 0.000 0.473 S 0.000 0.000 0.284 0.095 0. 095 0.000 0.000 0.000 0.000 0.473 SSW 0.000 0.000 0.284 0.189 0.000 0.000 0.000 0.000 0.000 0.473 SW 0.000 0.000 0.237 0.237 0.000 0.000 0.000 0.000 0.000 0.473 WSW 0.000 0. 000 0.000 0.047 0.047 0.000 0. 000 0.000 0.000 0.095 W 0.000 0.000 0.047 0.095 0.047 0.000 0.000 0.000 0.000 0.189 WNW 0.000 0.000 0.000 0.000 0.095 0.047 0.000 0.000 0.000 0.142 NW 0.000 0. 000 0.000 0.047 0.189 0.284 0.095 0.000 0.000 0.615 NNW 0.000 0.000 0.000 0.047 0.000 0.095 0.000 0.000 0.000 0.142 SUBTOTAL 0.000 0.000 1.372 1.467 0.852 0.852 0.095 0.000 0.000 4 . 638 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS C 101 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 98 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 5.48 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-13

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24 .5 TOTAL N 0.000 0.000 0.047 0.237 0.379 0.757 0.000 0.000 0.000 1.420 NNE 0.000 0.000 0.142 0.284 0.426 0.568 0.000 0.000 0. 000 1.420 NE 0.000 0.000 0.047 0.237 0.426 0.142 0.000 0. 000 0.000 0.852 ENE 0.000 0.000 0.142 0.237 0.095 0.000 0.000 0. 000 0. 000 0.473 E 0.000 0.000 0.142 0.473 0.142 0.000 0.000 0. 000 0.000 0.757 ESE 0.000 0.000 0.473 1.609 1.183 0. 189 0.000 0.000 0.000 3.455 SE 0.000 0.000 1.230 1.325 0.331 0.047 0.000 0.000 0.000 2.934 SSE 0.000 0.000 0.947 0.284 0.047 0.000 0.000 0.000 0.000 1.278 S 0.000 0.047 1.514 0.426 0.237 0.000 0.000 0.000 0.000 2.224 SSW 0.000 0.095 1.514 1.088 0.379 0.000 0.000 0.000 0.000 3.076 SW 0.000 0.047 0.568 0.237 0.000 0.000 0.000 0.000 0. 000 0.852 WSW 0.000 0.000 0.615 0.331 0.095 0.284 0.000 0.000 0.000 1.325 W 0.000 0.000 0.331 0.331 0.095 0.047 0.000 0. 000 0.000 0.805 WNW 0.000 0.000 0.237 0.568 0.237 0.284 0.000 0.047 0.000 1.372 NW 0.000 0.047 0.142 0.331 0.710 0.899 0.095 0. 000 0. 000 2.224 NNW 0.000 0.000 0.047 0.331 0.237 0.663 0.426 0.000 0. 000 1.704 SUBTOTAL 0.000 0.237 8.140 8.329 5.017 3.881 0.521 0.047 0.000 26.171 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS D 562 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 553 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 5.12 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-14

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.047 0.710 0.994 0.710 0.331 0.000 0.000 0.000 2.792 NNE 0. 000 0.095 0.331 0.473 0.284 0.237 0.000 0.000 0.000 1.420 NE 0.000 0.142 0.805 0.473 0.615 0.237 0. 000 0.000 0.000 2.272 ENE 0.000 0.095 0.757 0.757 0.189 0.000 0.000 0.000 0. 000 1.798 E 0.000 0.095 1.325 2.035 0.142 0.047 0. 000 0.000 0.000 3.644 ESE 0.000 0.331 2.035 1. 562 0.379 0.000 0.000 0.000 0.000 4 .307 SE 0.000 0.095 1.562 0.379 0.047 0.000 0.000 0.000 0.000 2.082 SSE 0. 000 0.189 0.899 0.284 0.237 0.095 0.000 0. 000 0. 000 1.704 S 0.000 0.189 1.183 0.426 0.142 0.189 0.047 0.000 0. 000 2. 177 SSW 0. 000 0.095 0.615 0.805 0.379 0.047 0. 000 0. 000 0. 000 1.940 SW 0.000 0.000 0.284 0.000 0. 000 0.000 0. 000 0. 000 0. 000 0.284 WSW 0.000 0.142 0.284 0.189 0.000 0.047 0. 000 0.000 0. 000 0. 663 W 0.000 0.095 0.521 0.331 0.000 0.000 0. 000 0.000 0. 000 0.947 WNW 0.000 0.047 0.000 0.047 0.047 0.047 0. 000 0.000 0. 000 0.189 NW 0. 000 0.047 0.142 0.189 0.095 0.142 0.000 0.000 0. 000 0.615 NNW 0.000 0.000 0.237 0.142 0.284 0.095 0.000 0.000 0. 000 0.757 SUBTOTAL 0.000 1.704 11.690 9.087 3.549 1.514 0.047 0.000 0.000 27.591 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS E 585 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 583 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 3.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-15

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.095 0.521 0.379 0.095 0. 000 0. 000 0.000 0. 000 1.088 NNE 0.000 0.095 0.473 0.663 0.095 0.000 0.000 0. 000 0. 000 1.325 NE 0.000 0.237 0.805 0.142 0.142 0.000 0. 000 0. 000 0. 000 1. 325 ENE 0.000 0.095 0.663 0.189 0.095 0.000 0. 000 0.000 0. 000 1.041 E 0.000 0.237 1.088 0.568 0.047 0.000 0.000 0.000 0. 000 1.940 ESE 0.000 0.142 0.852 0.095 0.000 0.000 0.000 0.000 0. 000 1.088 SE 0.000 0.521 0.899 0.095 0.000 0.000 0.000 0.000 0.000 1.514 SSE 0.000 0.568 0.379 0.142 0.095 0.095 0.000 0.000 0.000 1.278 S 0.000 0.189 0.379 0.237 0.000 0.000 0.000 0.000 0.000 0. 805 SSW 0.000 0.095 0.331 0.000 0.000 0.000 0.000 0.000 0.000 0.426 SW 0.000 0.142 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.237 WSW 0.000 0.047 0.095 0.000 0.000 0.000 0. 000 0.000 0.000 0.142 W 0.000 0.142 0.331 0.047 0.000 0.000 0.000 0. 000 0.000 0.521 WNW 0.000 0.095 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.095 NW 0.000 0.047 0.047 0.142 0.000 0.000 0. 000 0.000 0. 000 0.237 NNW 0.000 0.047 0.284 0.189 0.095 0.000 0.000 0.000 0. 000 0.615 SUBTOTAL 0.000 2.792 7.241 2.887 0.663 0.095 0.000 0. 000 0.000 13. 677 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS F 290 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 289 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 2.69 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-16

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.331 1.183 0.331 0.000 0.000 0.000 0. 000 0. 000 1.846 NNE 0.000 0.189 0.710 0.189 0.000 0.000 0.000 0. 000 0.000 1.088 NE 0.000 0.095 0.473 0.000 0.000 0.000 0.000 0. 000 0.000 0.568 ENE 0.000 0.237 0.568 0.095 0. 000 0.000 0.000 0.000 0. 000 0.899 E 0.000 0.237 0.142 0.095 0. 000 0.000 0.000 0.000 0.000 0.473 ESE 0.000 0.142 0.047 0.000 0.000 0.000 0.000 0. 000 0.000 0.189 SE 0.000 0.284 0.047 0.000 0.000 0.000 0.000 0. 000 0.000 0.331 SSE 0.000 0.284 0.189 0.047 0. 000 0.000 0.000 0. 000 0.000 0.521 S 0.000 0.047 0. 189 0.095 0.000 0.000 0.000 0.000 0.000 0.331 SSW 0.000 0. 000 0.047 0.000 0. 000 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.047 0.047 0.000 0. 000 0.000 0.000 0.000 0.000 0.095 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 W 0.000 0.047 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.047 WNW 0.000 0.189 0.000 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.189 NW 0.000 0.095 0.142 0.000 0. 000 0.000 0.000 0. 000 0.000 0.237 NNW 0.000 0.142 0.757 0.000 0.000 0.000 0. 000 0.000 0.000 0.899 SUBTOTAL 0.000 2.366 4.543 0.852 0.000 0.000 0. 000 0.000 0.000 7.761 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2130 TOTAL HOURS OF STABILITY CLASS G 165 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 164 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2113 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 2.07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 7

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 12 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES THIRD QUARTER E2-18

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-l.9 C/100 M)

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.185 0. 000 0.000 0. 000 0.185 NNE 0.000 0.000 0.000 0. 000 0.000 0.139 0. 000 0.000 0. 000 0.139 NE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 ENE 0.000 0.000 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 0.046 0.000 0. 000 0.000 0. 000 0.046 ESE 0.000 0.000 0.000 0.278 0.371 0. 000 0. 000 0.000 0.000 0.649 SE 0.000 0.000 0.185 1.437 0.046 0.000 0. 000 0.000 0. 000 1.669 SSE 0.000 0.000 1.066 1.762 0.000 0.000 0. 000 0.000 0. 000 2.828 S 0. 000 0.000 0.974 1. 113 0.000 0. 000 0.000 0.000 0. 000 2.086 SSW 0. 000 0.000 0.278 0.788 0.000 0. 000 0.000 0.000 0. 000 1.066 SW 0.000 0. 000 0.139 0.742 0.046 0.000 0. 000 0.000 0.000 0. 927 WSW 0. 000 0.000 0.046 0.417 0.046 0. 000 0. 000 0. 000 0. 000 0.510 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0. 000 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 2.689 6.583 0.556 0.371 0. 000 0. 000 0.000 10. 199 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS A 221 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 220 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 4.16 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-19

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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. 000 0.000 0.000 0.371 0.000 0.000 0.000 0.371 NE 0.000 0.000 0. 000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 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 0.093 0.000 0.000 0.000 0.000 0.000 0.139 ESE 0.000 0.000 0.046 0.139 0.093 0.000 0.000 0.000 0.000 0.278 SE 0.000 0.000 0.185 0.185 0.000 0.000 0.000 0. 000 0.000 0.371 SSE 0.000 0.000 0.834 0.278 0.000 0. 000 0.000 0.000 0.000 1.113 S 0.000 0.000 0.510 0.232 0.000 0. 000 0.000 0.000 0.000 0.742 SSW 0.000 0.000 0.556 0.232 0.000 0. 000 0.000 0.000 0.000 0.788 SW 0.000 0. 000 0.232 0.464 0.000 0. 000 0.000 0.000 0.000 0. 695 WSW 0.000 0.000 0.046 0.371 0.000 0.000 0.000 0.000 0.000 0.417 W 0.000 0.000 0. 000 0.185 0.093 0. 000 0.000 0. 000 0. 000 0.278 WNW 0.000 0.000 0. 000 0.046 0.093 0.093 0.000 0. 000 0. 000 0.232 NW 0.000 0.000 0. 000 0.093 0.000 0.000 0.000 0. 000 0.000 0.093 NNW 0.000 0.000 0. 000 0.046 0.046 0.046 0.000 0. 000 0. 000 0.139 SUBTOTAL 0.000 0.000 2. 457 2.411 0.325 0.603 0.000 0. 000 0.000 5.795 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS B 126 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 125 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 4.20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-20

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 WI ND 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. 000 0.139 0.000 0.000 0.000 0.278 NNE 0. 000 0.000 0.000 0.093 0.139 0.232 0.000 0.000 0. 000 0.464 NE 0. 000 0.000 0.000 0.093 0. 000 0.000 0. 000 0.000 0. 000 0.093 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 0.093 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.093 0.232 0.046 0.000 0. 000 0.000 0. 000 0.371 SE 0.000 0.000 0.603 0.000 0.000 0.000 0. 000 0.000 0.000 0.603 SSE 0. 000 0.000 0.325 0. 000 0. 000 0.000 0. 000 0.000 0.000 0. 325 S 0. 000 0.000 0.695 0.093 0.000 0.000 0.000 0.000 0.000 0.788 SSW 0. 000 0.000 0.695 0.139 0.000 0.000 0.000 0. 000 0.000 0.834 SW 0. 000 0.000 0.417 0.232 0.000 0.000 0.000 0.000 0.000 0.649 WSW 0. 000 0.000 0.093 0.556 0.046 0.000 0.000 0.000 0. 000 0.695 W 0.000 0.000 0.046 0.185 0.139 0.046 0.000 0.000 0.000 0.417 WNW 0.000 0.000 0.046 0.093 0.185 0.000 0.000 0.000 0. 000 0.325 NW 0. 000 0.000 0.046 0.000 0.093 0.185 0.000 0.000 0. 000 0.325 NNW 0. 000 0.000 0.000 0.000 0.093 0.046 0.000 0.000 0. 000 0.139 SUBTOTAL 0. 000 0.000 3.106 1.901 0.742 0.649 0.000 0.000 0. 000 6.398 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS C 139 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 138 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 4.32 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-21

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.417 0.417 0.695 0.278 0.000 0.000 0.000 1.808 NNE 0.000 0.000 0.371 0.417 0.556 0.649 0.046 0.000 0.000 2.040 NE 0.000 0. 000 0.417 0.510 0.185 0.325 0.000 0.000 0.000 1.437 ENE 0.000 0. 000 0.417 0.371 0.325 0.232 0.000 0.000 0.000 1.344 E 0.000 0.000 0.510 0.603 0.185 0.139 0.000 0.000 0.000 1.437 ESE 0.000 0. 000 0.881 1.808 0.881 0.139 0.000 0.000 0.000 3.709 SE 0.000 0.046 1.391 0.464 0.185 0.000 0.000 0.000 0.000 2.086 SSE 0.000 0.046 1.205 0.139 0.000 0.000 0.000 0.000 0.000 1.391 S 0.000 0.046 1.854 0.185 0.000 0.046 0.000 0.000 0.000 2.133 SSW 0. 000 0.139 2.550 0.185 0.046 0.185 0.000 0.000 0.000 3.106 SW 0.000 0. 000 1.484 0.232 0. 000 0.000 0.000 0.000 0.000 1.715 WSW 0.000 0.093 1.854 0.695 0.046 0.000 0.000 0.000 0.000 2.689 W 0.000 0.000 0.881 1.205 0.325 0.093 0.000 0. 000 0.000 2.503 WNW 0.000 0.000 0.278 0.742 0.788 0.464 0.000 0.000 0.000 2.272 NW 0.000 0. 000 0.185 0.510 0.556 0.695 0.046 0. 000 0.000 1.994 NNW 0.000 0. 000 0.278 0.278 0.417 0.464 0.000 0.000 0.000 1. 437 SUBTOTAL 0.000 0.371 14.975 8.762 5. 192 3.709 0.093 0. 000 0.000 33.102 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS D 728 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 714 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 4.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-22

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.927 0.927 0.510 0.093 0.000 0.000 0.000 2.503 NNE 0.000 0.185 0.788 0.788 0.695 0.371 0.000 0.000 0. 000 2.828 NE 0.000 0.278 1.020 0.510 0.649 0.232 0.000 0.000 0.000 2.689 ENE 0.000 0.232 1.391 0.742 0.232 0.000 0.000 0.000 0.000 2.596 E 0.000 0.185 1.576 1.576 0.185 0.139 0.000 0.000 0. 000 3.662 ESE 0.000 0. 000 1.947 1.252 0.139 0.046 0.000 0.000 0.000 3.384 SE 0. 000 0.139 1.020 0.139 0.093 0.000 0.000 0.000 0.000 1.391 SSE 0. 000 0.232 0.510 0.000 0. 000 0.046 0.000 0.000 0.000 0.788 S 0.000 0.325 0.927 0.000 0.04 6 0.046 0.000 0.000 0. 000 1.344 SSW 0.000 0.185 0.927 0.000 0.093 0.139 0.000 0.000 0.000 1.344 SW 0.000 0.139 0.603 0. 000 0.000 0.000 0.000 0.000 0.000 0.742 WSW 0. 000 0.046 0.649 0.046 0.000 0.000 0.000 0.000 0.000 0.742 W 0. 000 0.046 0.510 0.371 0.232 0.093 0.000 0.000 0. 000 1.252 WNW 0.000 0.046 0.232 0.000 0.093 0.000 0.000 0.000 0.000 0.371 NW 0.000 0.046 0.325 0.139 0.000 0.000 0.000 0.000 0.000 0.510 NNW 0.000 0.139 0.464 0.417 0.046 0.000 0.000 0.000 0.000 1.066 SUBTOTAL 0.000 2.272 13.815 6.908 3.013 1.205 0.000 0.000 0.000 27.214 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS E 598 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 587 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 3.49 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-23

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 1.159 1.066 0.046 0. 000 0. 000 0.000 0. 000 2.503 NNE 0.000 0.325 0.881 1.252 0.185 0. 000 0. 000 0.000 0. 000 2.643 NE 0.000 0.000 0.417 0.185 0.046 0. 000 0.000 0.000 0. 000 0.649 ENE 0.000 0.139 0.881 0.417 0.000 0. 000 0. 000 0.000 0. 000 1.437 E 0.000 0.046 0.556 0.603 0.000 0.000 0.000 0.000 0. 000 1.205 ESE 0.000 0.093 0.185 0. 000 0.000 0. 000 0.000 0.000 0. 000 0.278 SE 0.000 0.278 0.093 0.000 0. 000 0.000 0.000 0.000 0. 000 0.371 SSE 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0. 000 0.232 S 0.000 0.000 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 0.093 0.046 0.046 0. 000 0.000 0. 000 0.000 0. 000 0.185 WSW 0. 000 0.000 0.046 0.000 0.000 0.000 0. 000 0.000 0. 000 0.046 W 0.000 0.093 0.093 0.046 0. 000 0.000 0. 000 0.000 0.000 0.232 WNW 0.000 0.139 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.371 NW 0. 000 0.000 0.325 0.046 0.000 0.000 0.000 0.000 0.000 0.371 NNW 0.000 0.139 0.417 0.046 0.000 0.000 0.000 0.000 0.000 0.603 SUBTOTAL 0.000 1.715 5.378 3.755 0.278 0.000 0.000 0. 000 0.000 11. 127 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS F 241 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 240 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 2.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-24

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.371 0.881 0.278 0.000 0. 000 0.000 0.000 0.000 1.530 NNE 0.000 0.371 0.695 0.000 0.046 0.000 0.000 0. 000 0.000 1.113 NE 0.000 0.510 0.556 0.046 0.000 0.000 0.000 0. 000 0.000 1.113 ENE 0.000 0.046 0.649 0.139 0. 000 0.000 0. 000 0. 000 0.000 0.834 E 0.000 0.046 0.325 0.046 0. 000 0.000 0.000 0. 000 0.000 0.417 ESE 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0. 000 0.000 0.093 SE 0.000 0.046 0. 000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.046 SSE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 SSW 0.000 0.000 0.046 0.000 0.000 0.000 0. 000 0.000 0.000 0.046 SW 0.000 0.093 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 W 0.000 0.046 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.325 0.371 0.139 0.000 0.000 0.000 0. 000 0. 000 0.834 SUBTOTAL 0.000 1.854 3.616 0.649 0.046 0.000 0.000 0.000 0.000 6.166 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2188 TOTAL HOURS OF STABILITY CLASS G 135 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 133 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 2.14 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-25

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 13 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR GROUND LEVEL RELEASES FOURTH QUARTER E2-26

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-l.9 C/100 M)

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.046 0.046 0.000 0.000 0.092 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0. 000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 ENE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0. 000 0.046 0.092 0.000 0.000 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.000 0.416 0.000 0.000 0.000 0.000 0.000 0.416 SSE 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.277 S 0.000 0.000 0.277 0.4 62 0.000 0.000 0.000 0.000 0.000 0.740 SSW 0.000 0.000 0.000 0.185 0. 000 0.000 0.000 0.000 0.000 0.185 SW 0. 000 0.000 0.000 0.046 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 0.046 0.046 0.000 0.000 0.092 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 0.462 1.341 0.000 0.092 0.139 0.000 0.000 2.034 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS A 44 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 44 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 4.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-27

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.139 0.046 0.000 0.000 0.185 NNE 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 NE 0.000 0.000 0.000 0.000 0. 000 0.046 0.000 0.000 0. 000 0.046 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 0.046 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 0.092 0.324 0. 000 0.000 0.000 0.000 0.000 0.416 SSE 0.000 0.000 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.231 S 0.000 0.000 0.185 0.139 0.000 0. 000 0.000 0.000 0.000 0.324 SSW 0.000 0.000 0.046 0.092 0.000 0.000 0.000 0. 000 0.000 0.139 SW 0.000 0. 000 0.046 0.092 0.000 0.000 0.000 0.000 0. 000 0.139 WSW 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 W 0.000 0.000 0. 000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 WNW 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.046 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.046 0.092 0. 000 0.000 0.139 NNW 0.000 0.000 0.000 0.000 0.092 0.139 0.046 0. 000 0.000 0.277 SUBTOTAL 0.000 0.000 0.555 0.786 0.324 0.462 0.231 0.000 0.000 2.358 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS B 51 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 51 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 6.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-28

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.185 0.046 0.000 0.000 0.277 NNE 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.046 0.000 0. 000 0.000 0. 000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 ESE 0.000 0. 000 0.000 0.185 0.000 0.000 0.000 0.000 0.000 0.185 SE 0.000 0. 000 0.139 0.046 0.000 0.000 0. 000 0.000 0.000 0.185 SSE 0.000 0. 000 0.185 0.046 0.000 0.000 0.000 0.000 0. 000 0.231 S 0.000 0. 000 0.139 0.092 0.000 0.000 0. 000 0.000 0. 000 0.231 SSW 0.000 0. 000 0.185 0.185 0.000 0.000 0. 000 0.000 0.000 0.370 SW 0.000 0. 000 0.000 0.046 0.000 0.000 0. 000 0.000 0. 000 0.046 WSW 0.000 0.000 0.046 0.092 0.046 0.046 0. 000 0.000 0. 000 0.231 W 0.000 0. 000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.092 WNW 0.000 0. 000 0.000 0.092 0.046 0.185 0.139 0.000 0. 000 0.4 62 NW 0.000 0. 000 0.000 0.000 0.231 0.185 0.139 0.000 0. 000 0.555 NNW 0.000 0.000 0.000 0.092 0.000 0.370 0.046 0.000 0.000 0.509 SUBTOTAL 0.000 0. 000 0.693 0.925 0.416 0.971 0.416 0.000 0. 000 3.421 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 74 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 7.06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-29

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.647 1.341 1.017 0.555 0.000 0.000 0.000 3.560 NNE 0.000 0.000 0.277 1.248 1.017 0.693 0.092 0. 000 0.000 3.329 NE 0.000 0.046 0.4 62 1.156 0.462 0.324 0.139 0.000 0.000 2.589 ENE 0.000 0.000 0.740 0.370 0.324 0.046 0.046 0.000 0. 000 1.526 E 0.000 0.000 0.925 1.248 0.046 0.092 0.000 0.000 0. 000 2.312 ESE 0.000 0.000 0.647 1.942 1.526 0.277 0.046 0.000 0. 000 4.438 SE 0.000 0.046 1.526 0.555 0.185 0.185 0.000 0.000 0. 000 2 .497 SSE 0.000 0.046 1.757 0.693 0.046 0.046 0. 000 0.000 0.000 2.589 S 0.000 0.046 1.479 0.370 0.046 0.000 0.000 0.000 0. 000 1.942 SSW 0. 000 0.046 0.647 0.092 0.092 0.000 0.000 0. 000 0. 000 0.878 SW 0.000 0.092 0.555 0.324 0.000 0.000 0.000 0. 000 0. 000 0.971 WSW 0. 000 0.000 0.416 0.277 0.231 0.277 0.000 0.000 0. 000 1.202 W 0. 000 0. 000 0.4 62 0.555 0.832 0.971 0.231 0.000 0.000 3.051 WNW 0.000 0.000 0.185 0.832 0.878 1.248 1.110 0.046 0.000 4 .300 NW 0.000 0.000 0.277 1.248 0.509 1.849 1.063 0.046 0. 000 4 .993 NNW 0. 000 0.092 0.370 1.110 1.202 3.282 0.370 0.000 0.000 6.426 SUBTOTAL 0.000 0.416 11.373 13.361 8.414 9.847 3.098 0.092 0.000 46.602 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS D 1013 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1008 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 6.05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-30

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.509 0.878 0.4 62 0.185 0.000 0.000 0. 000 2.080 NNE 0.000 0.092 0.601 0.370 0.277 0.000 0.000 0.000 0.000 1.341 NE 0.000 0.046 0.370 0.092 0.185 0.000 0.000 0.000 0.000 0.693 ENE 0. 000 0.185 0.509 0.277 0.046 0.092 0.000 0.000 0.000 1.110 E 0.000 0.046 0.740 0.370 0.000 0.000 0. 000 0.000 0.000 1.156 ESE 0.000 0.185 1.063 0.509 0.416 0.185 0.000 0.000 0.000 2.358 SE 0. 000 0.324 0.878 0.324 0.324 0.231 0.000 0.000 0.000 2.080 SSE 0. 000 0.139 1.618 0.647 0.509 0.000 0.000 0.000 0.000 2.913 S 0. 000 0.139 1.711 0.878 0.647 0.462 0. 000 0.000 0. 000 3.837 SSW 0.000 0.139 0.370 0.509 0.092 0.231 0.000 0.000 0. 000 1.341 SW 0.000 0.000 0.555 0.092 0. 000 0.000 0.000 0.000 0. 000 0.647 WSW 0. 000 0.185 0.509 0.370 0.370 0.046 0.000 0.000 0.000 1.479 W 0.000 0.046 0.277 0.231 0.139 0.046 0.000 0.000 0.000 0.740 WNW 0.000 0.092 0.139 0.092 0.139 0.000 0.000 0.000 0.000 0.4 62 NW 0. 000 0.092 0.324 0.231 0.185 0.092 0.092 0.000 0.000 1.017 NNW 0. 000 0.139 0.647 0.878 0.509 0.324 0.046 0.000 0.000 2.543 SUBTOTAL 0.000 1.896 10.818 6.750 4.300 1.896 0.139 0.000 0.000 25.798 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS E 561 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 558 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 4.01 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-31

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 1.063 0.971 0.000 0.000 0.000 0. 000 0. 000 2.080 NNE 0.000 0.185 0.416 0.277 0.000 0.000 0.000 0. 000 0.000 0.878 NE 0.000 0.092 0.277 0.000 0.000 0.000 0.000 0. 000 0.000 0.370 ENE 0.000 0.000 0.231 0.046 0.000 0.000 0.000 0. 000 0.000 0.277 E 0.000 0.092 0.740 0.231 0.000 0.000 0.000 0. 000 0.000 1.063 ESE 0.000 0.092 0.555 0.000 0.000 0.000 0.000 0. 000 0.000 0.647 SE 0.000 0.277 0.740 0.324 0.092 0.000 0.000 0.000 0.000 1.433 SSE 0.000 0.231 1.341 0.370 0.046 0.046 0.000 0. 000 0.000 2.034 S 0.000 0.046 0.786 0.416 0.231 0.139 0.000 0. 000 0.000 1.618 SSW 0.000 0.092 0.324 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.416 SW 0.000 0.046 0.185 0.000 0.000 0.000 0.000 0. 000 0.000 0.231 WSW 0.000 0.139 0.092 0.000 0.000 0.000 0.000 0. 000 0.000 0.231 W 0.000 0.000 0.092 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.092 WNW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0. 000 0.000 0.092 NW 0.000 0.000 0.092 0.000 0.046 0.000 0.000 0.000 0.000 0.139 NNW 0.000 0.046 0.601 0.416 0.046 0.092 0.000 0.000 0.000 1.202 SUBTOTAL 0.000 1.433 7.582 3.051 0.462 0.277 0.000 0. 000 0.000 12.806 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS F 278 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 277 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 2.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-32

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.509 1.063 0.277 0.000 0.000 0.000 0.000 0. 000 1.849 NNE 0.000 0.416 0.416 0.000 0.000 0.000 0. 000 0.000 0.000 0.832 NE 0.000 0.139 0.462 0.000 0.000 0.000 0. 000 0.000 0. 000 0.601 ENE 0.000 0.046 0.509 0. 000 0.000 0.000 0.000 0.000 0.000 0.555 E 0.000 0.092 0.092 0.000 0.000 0.000 0. 000 0.000 0.000 0.185 ESE 0.000 0.231 0.139 0.000 0. 000 0.000 0.000 0.000 0.000 0.370 SE 0. 000 0. 092 0.139 0. 000 0.000 0.000 0. 000 0.000 0.000 0.231 SSE 0. 000 0. 185 1.063 0.092 0.000 0.000 0.000 0.000 0.000 1.341 S 0.000 0.185 0.139 0. 000 0.046 0.000 0.000 0.000 0.000 0.370 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. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 W 0. 000 0.046 0.046 0. 000 0.000 0.000 0.000 0.000 0.000 0.092 WNW 0. 000 0.046 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.046 NW 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NNW 0.000 0.092 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.370 SUBTOTAL 0.000 2. 173 4. 392 0.370 0.046 0.000 0.000 0.000 0.000 6.981 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2172 TOTAL HOURS OF STABILITY CLASS G 151 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 151 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2163 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 2.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-33

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 14 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL PORTION)

FIRST QUARTER E2-34

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.019 0.078 0.034 0. 000 0.000 0.130 NNE 0.000 0.000 0.000 0.000 0.010 0.051 0.019 0. 000 0.000 0.080 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.017 0.000 0. 000 0.000 0.017 SE 0.000 0.000 0.000 0.059 0.070 0.000 0.000 0. 000 0.000 0.129 SSE 0.000 0.000 0.000 0.033 0.008 0.000 0.000 0. 000 0.000 0.041 S 0.000 0. 000 0.000 0.070 0.072 0.000 0.000 0. 000 0.000 0.142 SSW 0.000 0.000 0.009 0.047 0.018 0.000 0.000 0. 000 0.000 0.075 SW 0.000 0. 000 0.000 0.000 0.007 0.000 0.000 0. 000 0.000 0.007 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 0.015 0.018 0.011 0. 000 0.000 0.043 WNW 0.000 0.000 0.000 0.000 0.004 0.087 0.054 0. 000 0.000 0.145 NW 0.000 0.000 0.000 0.000 0.002 0.122 0.037 0. 000 0.000 0.162 NNW 0.000 0.000 0.000 0.000 0.014 0.117 0.124 0. 000 0.000 0.255 SUBTOTAL 0.000 0. 000 0.009 0.209 0.240 0.490 0.279 0. 000 0.000 1.227 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310. 980 TOTAL HOURS OF STABILITY CLASS A 25.860 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 25.860 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-35

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.006 0.022 0.000 0.000 0.000 0.028 NNE 0.000 0.000 0.000 0.000 0.040 0.011 0.000 0.000 0.000 0.051 NE 0. 000 0.000 0.000 0. 000 0. 000 0.007 0.000 0.000 0. 000 0.007 ENE 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 E 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0. 000 0. 009 0.000 0.000 0.000 0.000 0.009 SE 0.000 0.000 0.001 0. 011 0.009 0.000 0. 000 0.000 0.000 0.022 SSE 0.000 0.000 0.001 0.006 0. 000 0.000 0.000 0.000 0.000 0.007 S 0.000 0.000 0.000 0.000 0.009 0.016 0.000 0.000 0.000 0.025 SSW 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0. 000 SW 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0. 000 WSW 0. 000 0.000 0.000 0.002 0.007 0.000 0.000 0. 000 0.000 0.009 W 0.000 0.000 0.000 0.000 0.000 0.009 0. 009 0.000 0.000 0.018 WNW 0.000 0.000 0.000 0.000 0.009 0.027 0.096 0.000 0.000 0.131 NW 0. 000 0.000 0. 000 0.000 0.000 0.037 0.043 0.000 0.000 0.080 NNW 0. 000 0. 000 0.000 0.000 0.000 0.031 0. 000 0.000 0.000 0.031 SUBTOTAL 0.000 0. 000 0.003 0.019 0.087 0.160 0.148 0.000 0. 000 0.418 TOTAL HOURS OF VALID OBSERVATIONS 2 108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310. 980 TOTAL HOURS OF STABILITY CLASS B 8.810 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 8.810 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-36

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

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 DIRECTION 0.000 0.000 0. 000 0.000 0.017 0.000 0.000 0. 000 0.000 0.017 N

NNE 0.000 0.000 0. 000 0.000 0.027 0.014 0.000 0. 000 0.000 0.041 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 NE 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 ENE E 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0.000 0. 000 0.004 0.000 0.000 0.000 0.000 0. 000 0.004 ESE 0.000 0.000 0.000 0.009 0.007 0.000 0.000 0. 000 0.000 0.017 SE SSE 0.000 0. 000 0.000 0.000 0.026 0.000 0.000 0.000 0.000 0.026 0.000 0.000 0. 000 0.010 0.000 0.000 0.000 0.000 0.000 0.010 S

SSW 0.000 0.000 0.000 0.010 0.000 0.010 0.000 0.000 0.000 0.020 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 SW WSW 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0. 000 0.000 0.009 W 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.003 WNW 0.000 0.000 0.000 0.000 0.004 0.022 0.062 0.075 0.000 0.163 NW 0.000 0. 000 0.000 0.000 0.000 0.037 0.059 0. 000 0.000 0.096 NNW 0.000 0.000 0.000 0.001 0.000 0.057 0.019 0.000 0.000 0.077 SUBTOTAL 0.000 0.000 0.000 0.035 0.083 0.155 0.139 0.075 0.000 0.488 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310.980 TOTAL HOURS OF STABILITY CLASS C 13.020 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 10.280 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-37

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.023 0.082 0.424 0.029 0.047 0.000 0.605 NNE 0.000 0.000 0. 000 0.040 0.127 0.126 0.000 0. 000 0.000 0.294 NE 0.000 0. 000 0.000 0.015 0.064 0.056 0.000 0. 000 0.000 0.135 ENE 0. 000 0. 000 0.001 0.019 0.020 0.000 0. 000 0.000 0.000 0.040 E 0.000 0. 000 0.000 0.009 0.020 0.009 0. 000 0. 000 0.000 0.038 ESE 0.000 0. 000 0.002 0.014 0.026 0.022 0.000 0. 000 0.000 0.065 SE 0.000 0.000 0.010 0.055 0.035 0. 126 0.000 0. 000 0.000 0.225 SSE 0.000 0.000 0.011 0.080 0.014 0.000 0. 000 0. 000 0.000 0.104 S 0.000 0.000 0.000 0.027 0.101 0.054 0.000 0. 000 0.000 0.181 SSW 0.000 0.000 0. 010 0.048 0.000 0.018 0.000 0. 000 0.000 0.076 SW 0.000 0.000 0.000 0.019 0.000 0.010 0.000 0.000 0.000 0.029 WSW 0.000 0.000 0.001 0.004 0.023 0.028 0.000 0.000 0.000 0.056 W 0.000 0.000 0.000 0.013 0.058 0.103 0.016 0. 000 0.000 0. 190 WNW 0.000 0. 000 0.000 0.001 0.018 0.126 0.384 0.094 0.000 0.622 NW 0.000 0. 000 0.000 0.002 0.042 0.381 0.646 0.097 0.000 1.169 NNW 0.000 0. 000 0.000 0.019 0.085 0.363 0.198 0.045 0.000 0.710 SUBTOTAL 0.000 0.000 0.036 0.386 0.713 1.846 1.273 0.284 0.000 4.538 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310. 980 TOTAL HOURS OF STABILITY CLASS D 1007.200 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 95.660 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-38

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.004 0.077 0.064 0.052 0.000 0.000 0.000 0.196 NNE 0. 000 0.000 0.003 0.037 0.060 0.027 0.000 0.000 0.000 0.127 NE 0.000 0.000 0.003 0.059 0.036 0.008 0.000 0.000 0.000 0.106 ENE 0.000 0.000 0.000 0. 009 0.014 0.000 0. 000 0.000 0.000 0.023 E 0.000 0.000 0.021 0.011 0.008 0.000 0.000 0.000 0.000 0.040 ESE 0.000 0.000 0.033 0.038 0.025 0.000 0.000 0.000 0.000 0.096 SE 0.000 0.000 0.068 0.142 0.123 0.047 0.000 0.000 0.000 0.381 SSE 0.000 0.000 0.061 0.319 0.042 0.190 0.000 0.000 0.000 0.611 S 0.000 0.000 0.057 0.348 0.301 0.503 0.000 0.000 0.000 1.210 SSW 0.000 0.000 0.035 0. 114 0.044 0.062 0.000 0.000 0.000 0.255 SW 0.000 0.000 0.013 0.005 0.008 0.009 0.000 0.000 0.000 0.035 WSW 0. 000 0.000 0.025 0. 009 0.000 0.009 0.000 0.000 0.000 0.044 W 0. 000 0.000 0.017 0.038 0.063 0.000 0.000 0.000 0.000 0.118 WNW 0.000 0.000 0.000 0.000 0.026 0.040 0.000 0.000 0.000 0.066 NW 0.000 0.000 0.004 0.036 0.050 0.093 0. 009 0.000 0.000 0. 192 NNW 0. 000 0.000 0.002 0.075 0.072 0.049 0O.011 0.000 0.000 0.209 SUBTOTAL 0.000 0.000 0.348 1.317 0.935 1.090 0.020 0.000 0.000 3.711 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310. 980 TOTAL HOURS OF STABILITY CLASS E 822.100 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 78.230 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-39

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.035 0.065 0.000 0.000 0. 000 0.000 0.000 0. 101 NNE 0.000 0.000 0.006 0.049 0.015 0.000 0.000 0.000 0. 000 0.070 NE 0.000 0.000 0.006 0.019 0.008 0.000 0. 000 0.000 0.000 0.032 ENE 0.000 0.000 0.026 0.013 0. 000 0.000 0. 000 0.000 0.000 0.039 E 0.000 0.004 0.030 0.063 0.000 0.000 0.000 0.000 0.000 0.097 ESE 0.000 0.000 0.034 0.008 0.000 0.000 0.000 0.000 0.000 0.041 SE 0.000 0.000 0.148 0.093 0.010 0.000 0.000 0.000 0. 000 0.251 SSE 0.000 0.010 0.170 0.116 0.158 0.047 0.000 0.000 0. 000 0.501 S 0.000 0.004 0.065 0.220 0.229 0.723 0. 000 0.000 0.000 1.242 SSW 0.000 0.000 0.025 0.057 0.044 0.010 0. 000 0.000 0. 000 0.136 SW 0.000 0.000 0.000 0.013 0.000 0. 000 0.000 0.000 0.000 0.013 WSW 0.000 0.001 0. 000 0.000 0.000 0. 000 0. 000 0.000 0. 000 0.001 W 0. 000 0.001 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.001 WNW 0. 000 0.000 0.002 0.005 0.000 0.000 0. 000 0.000 0.000 0.008 NW 0. 000 0.000 0.001 0.009 0.016 0.000 0.000 0.000 0.000 0.027 NNW 0. 000 0.000 0.020 0.106 0.015 0.000 0. 000 0. 000 0. 000 0.141 SUBTOTAL 0.000 0.022 0.569 0.835 0.495 0.781 0.000 0.000 0.000 2.702 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310.980 TOTAL HOURS OF STABILITY CLASS F 159. 840 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 56. 950 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-40

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.009 0.033 0.000 0.000 0.000 0. 000 0.000 0.042 NNE 0.000 0.000 0.001 0.011 0.000 0.000 0.000 0. 000 0.000 0.012 NE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0. 000 ENE 0.000 0.000 0.015 0.000 0.000 0.000 0.000 0.000 0.000 0. 015 E 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0. 000 0.003 ESE 0.000 0.010 0.002 0.007 0.000 0.000 0.000 0.000 0.000 0.019 SE 0.000 0.001 0.122 0.010 0.027 0.000 0.000 0.000 0.000 0.160 SSE 0.000 0.080 0.596 0.240 0.043 0.000 0.000 0.000 0.000 0.959 S 0.000 0.005 0. 175 0.132 0.103 0.000 0. 000 0.000 0.000 0.416 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 0.022 0.012 0.009 0.000 0.000 0.000 0.000 0.043 SUBTOTAL 0.000 0.096 0.947 0.444 0.182 0. 000 0.000 0.000 0. 000 1. 669 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF GROUND LEVEL RELEASE 310. 980 TOTAL HOURS OF STABILITY CLASS G 71.170 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 35.190 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-41

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 15 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL PORTION)

SECOND QUARTER E2-42

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<--l.9 C/100 M)

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.013 0.286 0.016 0.000 0.000 0.315 NNE 0.000 0.000 0.000 0.000 0.012 0.113 0. 000 0.000 0. 000 0.124 NE 0.000 0.000 0.000 0.000 0.000 0. 000 0.009 0.000 0.000 0.009 ENE 0.000 0.000 0. 000 0.000 0.004 0. 000 0.000 0.000 0.000 0.004 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 0.055 0.166 0.071 0.000 0.000 0.000 0.292 SE 0.000 0.000 0.028 0.213 0.078 0.022 0.000 0.000 0.000 0.341 SSE 0.000 0.000 0.053 0.043 0.047 0.000 0.000 0.000 0.000 0.143 S 0.000 0.000 0.094 0.147 0.000 0. 000 0.000 0.000 0.000 0.241 SSW 0.000 0.000 0.007 0.144 0.000 0.000 0.000 0.000 0.000 0.151 SW 0. 000 0.000 0.000 0.024 0.000 0.000 0.000 0.000 0.000 0.024 WSW 0.000 0.000 0. 000 0.017 0.000 0.009 0.000 0.000 0.000 0.025 W 0.000 0.000 0.000 0.003 0.002 0.000 0.000 0.000 0.000 0.005 WNW 0. 000 0.000 0.000 0.000 0.004 0.043 0.02 6 0.000 0.000 0.073 NW 0.000 0.000 0.000 0.000 0.007 0.070 0.031 0.032 0.000 0.139 NNW 0.000 0.000 0.000 0.000 0.005 0.046 0.028 0.000 0.000 0.079 SUBTOTAL 0.000 0.000 0.183 0.646 0.338 0.658 0. 111 0.032 0.000 1.967 TOTAL HOURS OF VALID OBSERVATIONS 2114 .000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS A 41. 580 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 41. 580 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 -METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-43

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH) 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 DIRECTION CALM 0.000 0.000 0.000 0.036 0. 000 0.000 0.000 0.036 N 0.000 0.000 0.000 0.000 0.008 0.029 0.010 0.000 0. 000 0.047 NNE 0.000 0.000 0.000 0.000 0. 000 0.026 0.000 0.000 0.000 0.026 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 ENE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 E 0.000 0.000 0.034 0.014 0.000 0.000 0.000 0.000 0.048 ESE 0.000 0.000 0.013 0.016 0.018 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000

0. 000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0. 009 SSE 0.000 0.000 0. 000 0.006 0.032 0.010 0.000 0.000 0.000 0.000 0.048 S

0.005 0.029 0.000 0. 000 0. 000 0.000 0.000 0.034 SSW 0. 000 0.000 0.000 0. 000 0.007 0.023 0.000 0.000 0.000 0.000 0.000 0.030 SW 0.000 0. 000 0.000 0.028 0.000 0.009 0.000 0.000 0.000 0.038 WSW 0.000 0.000 0.002 0.000 0. 009 0.000 0.000 0.000 0.011 W 0.000 0.000 0. 000 0.000 0.000 0.001 0.006 0.000 0.000 0.000 0.007 WNW 0.000 0. 000 0.000 0.000 0.009 0.030 0.024 0.000 0.000 0.064 NW 0.000 0.000 0. 000 0.000 0.003 0.000 0.000 0.000 0.000 0.003 NNW

0. 000 0. 000 0.040 0.164 0.067 0.147 0.034 0.000 0.000 0.451 SUBTOTAL TOTAL HOURS OF VALID OBSERVATIONS 2114 .000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS B 9.540 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 9.540 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-44

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.038 0.000 0.000 0.000 0.038 NNE 0.000 0.000 0. 000 0.000 0.009 0.007 0.000 0.000 0.000 0.015 NE 0. 000 0. 000 0.000 0.000 0.000 0.023 0.000 0.000 0.000 0.023 ENE 0.000 0. 000 0.000 0.001 0. 011 0.000 0.000 0. 000 0.000 0.012 E 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.001 ESE 0.000 0.000 0.004 0.034 0.013 0.023 0.000 0.000 0.000 0.074 SE 0.000 0. 000 0.000 0.017 0.008 0.000 0.000 0.000 0.000 0.024 SSE 0.000 0.000 0.015 0.000 0. 000 0.000 0.000 0.000 0.000 0.015 S 0.000 0.000 0.022 0.009 0.018 0. 000 0.000 0.000 0.000 0.049 SSW 0.000 0. 000 0.005 0.041 0.000 0.000 0. 000 0.000 0.000 0.046 SW 0.000 0.000 0.005 0.018 0. 000 0.000 0. 000 0.000 0.000 0.023 WSW 0.000 0.000 0.000 0.004 0.005 0.000 0.000 0.000 0.000 0.009 W 0.000 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.003 WNW 0.000 0. 000 0. 000 0. 000 0.007 0.008 0.000 0.000 0.000 0.015 NW 0.000 0. 000 0.000 0.000 0.014 0.045 0.022 0.000 0.000 0.080 NNW 0.000 0.000 0.000 0.000 0. 000 0.016 0. 000 0.000 0.000 0.016 SUBTOTAL 0. 000 0. 000 0.052 0.124 0.087 0.158 0.022 0.000 0.000 0.443 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS C 14. 150 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 9.360 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-45

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.009 0.046 0.163 0. 000 0.000 0.000 0.218 NNE 0. 000 0.000 0.000 0.020 0.053 0.102 0. 000 0.000 0. 000 0.175 NE 0.000 0.000 0.000 0. 000 0.038 0.019 0. 000 0.000 0. 000 0.058 ENE 0.000 0.000 0.000 0.009 0.008 0.000 0.000 0.000 0. 000 0.018 E 0. 000 0.000 0. 001 0.038 0.018 0.000 0.000 0.000 0.000 0.056 ESE 0. 000 0.000 0.032 0.198 0.232 0.048 0.000 0.000 0.000 0.510 SE 0. 000 0.000 0.078 0.180 0.064 0.020 0.000 0.000 0.000 0.342 SSE 0.000 0.000 0.047 0.023 0.022 0.000 0.000 0.000 0. 000 0.091 S 0.000 0.000 0. 110 0.080 0.053 0.000 0.000 0.000 0. 000 0.242 SSW 0.000 0.000 0.098 0.175 0.099 0.000 0.000 0.000 0. 000 0.373 SW 0. 000 0.000 0.019 0.031 0.000 0. 000 0.000 0.000 0.000 0.050 WSW 0. 000 0.000 0.010 0.027 0.016 0.053 0. 000 0.000 0.000 0. 106 W 0.000 0.000 0.000 0.010 0.011 0.009 0.000 0.000 0. 000 0.031 WNW 0.000 0.000 0.000 0. 000 0.012 0.038 0.000 0.043 0. 000 0.093 NW 0. 000 0.000 0.000 0.004 0.051 0.115 0.019 0.000 0.000 0.189 NNW 0.000 0.000 0.000 0.012 0.022 0.117 0.153 0.000 0.000 0.305 SUBTOTAL 0. 000 0. 000 0.396 0.818 0.744 0.684 0.172 0.043 0.000 2.858 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF GROUND LEVEL RELEASE 231. 920 TOTAL HOURS OF STABILITY CLASS D 1073.710 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 60. 410 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-46

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.004 0.015 0.106 0.124 0.062 0. 000 0.000 0. 000 0.311 NNE 0. 000 0.000 0.005 0.049 0.041 0.044 0.000 0. 000 0. 000 0.139 NE 0. 000 0.002 0.015 0.042 0.090 0.043 0.000 0.000 0. 000 0.191 ENE 0.000 0.001 0.029 0.057 0.027 0.000 0.000 0.000 0. 000 0.114 E 0. 000 0.000 0.063 0.242 0.021 0.008 0.000 0.000 0. 000 0.334 ESE 0.000 0.007 0.157 0.245 0.076 0.000 0.000 0.000 0. 000 0.485 SE 0.000 0.000 0.159 0.072 0. 020 0.000 0. 000 0.000 0. 000 0.252 SSE 0. 000 0.002 0.128 0.114 0.221 0.095 0.000 0.000 0. 000 0.559 S 0. 000 0.008 0.178 0.081 0.060 0.178 0.047 0.000 0. 000 0.552 SSW 0.000 0.000 0.064 0.160 0.124 0.035 0.000 0.000 0.000 0.385 SW 0.000 0.000 0.010 0.000 0.000 0.000 0. 000 0.000 0. 000 0.010 WSW 0.000 0.000 0.008 0.018 0.000 0.029 0.000 0.000 0.000 0.056 W 0.000 0.000 0.007 0.030 0.000 0. 000 0.000 0.000 0.000 0.037 WNW 0.000 0. 000 0.000 0.004 0.004 0.008 0.000 0. 000 0.000 0.017 NW 0.000 0.000 0.000 0.021 0.012 0.025 0.000 0.000 0.000 0.059 NNW 0.000 0.000 0.001 0.018 0.037 0.017 0.000 0.000 0.000 0.073 SUBTOTAL 0. 000 0.024 0.839 1.260 0.858 0.544 0.047 0.000 0.000 3.571 TOTAL HOURS OF VALID OBSERVATIONS 2114. 000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS E 741.240 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 75.500 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-47

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH)

DIRECTION I 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 0.004 0.018 0.049 0.016 0.000 0.000 0.000 0.000 0.088 NNE 0.000 0. 000 0.008 0.092 0.016 0.000 0.000 0.000 0. 000 0.115 NE 0.000 0.013 0.034 0.020 0.024 0.000 0.000 0. 000 0.000 0.091 ENE 0.000 0.005 0.032 0.017 0.016 0.000 0. 000 0. 000 0.000 0.070 E 0. 000 0.010 0.049 0.070 0.009 0.000 0.000 0. 000 0.000 0.137 ESE 0.000 0.000 0.042 0.016 0.000 0.000 0.000 0.000 0.000 0.058 SE 0.000 0.035 0.070 0.014 0.000 0.000 0.000 0.000 0.000 0.118 SSE 0.000 0.027 0.033 0.063 0.069 0.095 0. 000 0. 000 0.000 0.288 S 0.000 0.000 0.073 0.054 0.000 0.000 0. 000 0.000 0.000 0.128 SSW 0.000 0.001 0.020 0. 000 0.000 0.000 0.000 0.000 0.000 0.021 SW 0.000 0. 009 0.001 0. 000 0.000 0.000 0.000 0.000 0.000 0. 010 WSW 0.000 0. 000 0.000 0. 000 0. 000 0.000 0.000 0. 000 0.000 0. 000 W 0.000 0.003 0.003 0.002 0.000 0.000 0. 000 0. 000 0.000 0.008 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 0.011 0.000 0.000 0.000 0. 000 0.000 0. 011 NNW 0.000 0.000 0O.011 0.024 0.015 0.000 0.000 0.000 0.000 0.050 SUBTOTAL 0.000 0.108 0.393 0.432 0.165 0.095 0.000 0. 000 0.000 1.192 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS F 207.340 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 25. 200 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-48

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.056 0.039 0.000 0.000 0. 000 0.000 0.000 0.095 NNE 0.000 0.003 0.019 0.018 0.000 0. 000 0.000 0.000 0.000 0.041 NE 0.000 0.004 0.017 0.000 0.000 0. 000 0.000 0.000 0.000 0.021 ENE 0.000 0.020 0.028 0.011 0.000 0.000 0.000 0.000 0.000 0.059 E 0.000 0.024 0.010 0.005 0.000 0.000 0.000 0.000 0.000 0.039 ESE 0.000 0.014 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.020 SE 0.000 0.035 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.041 SSE 0.000 0.037 0.027 0.032 0.000 0.000 0.000 0. 000 0.000 0.096 S 0.000 0.000 0.027 0.017 0.000 0.000 0.000 0. 000 0.000 0.044 SSW 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0. 000 SW 0.000 0.006 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.006 WSW 0. 000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0. 000 0.000 0. 000 W 0.000 0.006 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.006 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 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NNW 0.000 0.000 0.019 0.000 0.000 0. 000 0.000 0.000 0.000 0.019 SUBTOTAL 0.000 0.149 0.219 0. 122 0.000 0.000 0.000 0.000 0.000 0.489 TOTAL HOURS OF VALID OBSERVATIONS 2114 .000 TOTAL HOURS OF GROUND LEVEL RELEASE 231.920 TOTAL HOURS OF STABILITY CLASS G 26. 440 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 10. 330 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-49

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 16 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL PORTION)

THIRD QUARTER E2-50

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.031 0. 000 0.000 0.000 0.031 NNE 0.000 0.000 0.000 0.000 0.000 0.025 0.000 0.000 0.000 0.025 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 ENE 0.000 0.000 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 0.003 0.000 0.000 0.000 0.000 0.003 ESE 0.000 0.000 0.000 0.035 0.064 0.000 0.000 0.000 0.000 0.098 SE 0.000 0.000 0.024 0.118 0.007 0.000 0.000 0.000 0.000 0.149 SSE 0.000 0.000 0.045 0.098 0. 000 0.000 0.000 0.000 0.000 0.143 S 0.000 0. 000 0.057 0.078 0. 000 0.000 0.000 0.000 0.000 0.135 SSW 0.000 0.000 0.031 0.062 0.000 0.000 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.003 0.027 0.009 0.000 0.000 0.000 0.000 0.039 WSW 0.000 0.000 0.000 0.016 0.005 0.000 0.000 0.000 0.000 0.021 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 0.008 0.000 0.000 0.000 0.008 SUBTOTAL 0.000 0.000 0.159 0.435 0.087 0.064 0. 000 0.000 0. 000 0.745 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139. 510 TOTAL HOURS OF STABILITY CLASS A 18.920 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 16. 060 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-51

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.007 0.000 0. 000 0.000 0.007 NNE 0.000 0.000 0. 000 0.000 0. 000 0.052 0.000 0.000 0.000 0.052 NE 0 .000 0.000 0. 000 0.000 0. 000 0.005 0.000 0.000 0.000 0.005 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. 001 0.000 0.000 0. 000 0.000 0.000 0.000 0.001 ESE 0.000 0. 000 0.006 0.017 0.013 0.000 0.000 0.000 0.000 0.036 SE 0.000 0.000 0.008 0.010 0.000 0.000 0.000 0.000 0.000 0.018 SSE 0.000 0.000 0.030 0.003 0.000 0.000 0.000 0.000 0.000 0.033 S 0.000 0.000 0. 000 0.009 0.000 0.000 0.000 0. 000 0.000 0.010 SSW 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SW 0.000 0. 000 0.004 0.007 0.000 0.000 0.000 0.000 0.000 0.011 WSW 0.000 0. 000 0. 000 0.005 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.000 0.002 0.004 0.000 0.000 0.000 0.000 0.006 WNW 0.000 0.000 0. 000 0.000 0.006 0.010 0.000 0.000 0.000 0.017 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 0.005 0.007 0.000 0.000 0.000 0.012 SUBTOTAL 0.000 0.000 0.058 0.053 0.028 0.082 0.000 0.000 0.000 0.221 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS B 9.590 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 4.760 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-52

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.020 0.000 0.000 0. 000 0.020 NNE 0. 000 0.000 0.000 0.003 0.008 0.035 0.000 0.000 0. 000 0.046 NE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 E 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 ESE 0.000 0.000 0.000 0.015 0.006 0.000 0.000 0.000 0. 000 0.022 SE 0.000 0.000 0.032 0.000 0.000 0. 000 0.000 0.000 0.000 0.032 SSE 0. 000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.012 S 0.000 0.000 0.007 0.018 0.000 0.000 0.000 0.000 0. 000 0.026 SSW 0.000 0.000 0 .011 0.017 0.000 0.000 0.000 0.000 0. 000 0.028 SW 0. 000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0. 000 0.007 WSW 0. 000 0.000 0.000 0.002 0.006 0. 000 0.000 0. 000 0.000 0.008 W 0. 000 0.000 0.000 0.002 0.009 0.007 0.000 0.000 0.000 0.019 WNW 0.000 0.000 0. 000 0.000 0.011 0.000 0.000 0.000 0.000 0.011 NW 0. 000 0.000 0.000 0.000 0.009 0.025 0.000 0.000 0.000 0.034 NNW 0.000 0.000 0.000 0.000 0.008 0.007 0.000 0.000 0. 000 0.016 SUBTOTAL 0.000 0.000 0.069 0.058 0.058 0.095 0.000 0.000 0.000 0.279 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS C 31.740 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 6.020 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-53

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.006 0.079 0.046 0.000 0.000 0.000 0.131 NNE 0. 000 0.000 0.000 0.015 0.053 0.107 0.018 0.000 0.000 0.193 NE 0. 000 0.000 0.000 0.004 0.014 0.052 0.000 0.000 0. 000 0. 070 ENE 0.000 0.000 0. 000 0.008 0.040 0.038 0.000 0.000 0. 000 0.087 E 0. 000 0.000 0.000 0.034 0.025 0.046 0.000 0.000 0.000 0.105 ESE 0. 000 0.000 0.052 0.296 0.184 0.068 0.000 0.000 0.000 0. 600 SE 0.000 0.000 0.078 0.087 0.042 0.000 0.000 0.000 0. 000 0.208 SSE 0.000 0.000 0.075 0.028 0.000 0.000 0.000 0.000 0. 000 0.103 S 0.000 0.000 0.081 0.053 0.000 0.008 0.000 0.000 0.000 0. 142 SSW 0.000 0.000 0.096 0.020 0.006 0.034 0.000 0.000 0.000 0.156 SW 0.000 0.000 0.012 0.008 0.000 0.000 0.000 0.000 0. 000 0.020 WSW 0.000 0.000 0.003 0. 019 0.006 0.000 0.000 0.000 0.000 0.029 W 0.000 0.000 0.001 0.037 0.023 0.014 0. 000 0.000 0.000 0.075 WNW 0.000 0.000 0.000 0.008 0.046 0.058 0. 000 0.000 0.000 0.113 NW 0.000 0.000 0.000 0.016 0.032 0.081 0.012 0.000 0. 000 0.142 NNW 0.000 0.000 0.000 0.009 0.050 0.068 0.000 0.000 0. 000 0. 127 SUBTOTAL 0. 000 0.000 0.398 0.649 0.602 0.621 0.030 0.000 0.000 2.300 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS D 1182. 010 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 49. 580 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-54

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.005 0.022 0.108 0.086 0.015 0.000 0.000 0. 000 0.236 NNE 0.000 0.000 0.014 0.078 0.106 0.061 0.000 0.000 0.000 0.258 NE 0.000 0.005 0.014 0.044 0.083 0.035 0.000 0.000 0. 000 0.181 ENE 0.000 0.002 0.033 0.060 0.027 0.000 0. 000 0.000 0.000 0.122 E 0.000 0. 000 0.061 0.201 0.027 0.053 0.000 0.000 0.000 0.342 ESE 0.000 0. 000 0.099 0.193 0.023 0.028 0.000 0.000 0.000 0.344 SE 0.000 0.000 0.074 0.023 0.050 0. 000 0.000 0. 000 0.000 0.146 SSE 0.000 0. 001 0.028 0.000 0.000 0.007 0.000 0. 000 0.000 0.037 S 0.000 0.001 0.073 0.000 0.045 0.009 0.000 0.000 0.000 0.129 SSW 0.000 0. 001 0.055 0.000 0.040 0.035 0.000 0. 000 0.000 0.132 SW 0.000 0.01 1 0.019 0.000 0. 000 0.000 0.000 0. 000 0.000 0.030 WSW 0.000 0.000 0.000 0.005 0. 000 0.000 0.000 0. 000 0.000 0.005 W 0.000 0.000 0.002 0.018 0.028 0.015 0.000 0.000 0.000 0.063 WNW 0.000 0. 000 0.000 0.000 0.008 0.000 0.000 0. 000 0.000 0.008 NW 0.000 0.003 0.003 0.007 0. 000 0.000 0.000 0.000 0.000 0.013 NNW 0.000 0. 000 0.006 0.036 0.006 0.000 0.000 0.000 0. 000 0.048 SUBTOTAL 0.000 0.029 0.503 0.772 0.529 0.260 0.000 0.000 0.000 2.093 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS E 717.040 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 45.130 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-55

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.069 0.121 0.007 0.000 0.000 0. 000 0. 000 0.197 NNE 0.000 0.002 0.026 0.167 0.031 0.000 0.000 0.000 0. 000 0.226 NE 0. 000 0.000 0.010 0.026 0.006 0. 000 0.000 0.000 0. 000 0.042 ENE 0. 000 0.000 0.026 0.034 0.000 0.000 0.000 0.000 0.000 0.060 E 0.000 0.000 0.018 0.077 0.000 0.000 0.000 0.000 0.000 0.095 ESE 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.005 SE 0.000 0.000 0. 001 0.000 0.000 0.000 0.000 0.000 0. 000 0.001 SSE 0.000 0.000 0. 001 0.000 0.000 0.000 0.000 0.000 0. 000 0.001 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 0.000 0.000 0.001 0.000 0.000 0.000 0. 000 0. 000 0. 001 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 0.001 0.000 0.000 0.000 0. 000 0. 000 0.001 WNW 0.000 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.003 NW 0. 000 0.000 0. 000 0.005 0.000 0. 000 0.000 0.000 0. 000 0.005 NNW 0.000 0.000 0.012 0.004 0.000 0. 000 0.000 0.000 0.000 0.016 SUBTOTAL 0. 000 0.002 0.167 0.439 0.045 0.000 0.000 0.000 0.000 0. 653 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS F 180. 080 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 14 .070 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-56

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.039 0.037 0.000 0.000 0.000 0.000 0. 000 0.076 NNE 0.000 0.000 0.013 0.000 0.008 0. 000 0.000 0.000 0. 000 0.021 NE 0. 000 0.001 0.006 0.000 0.000 0.000 0.000 0.000 0. 000 0.007 ENE 0.000 0.000 0.009 0.019 0.000 0.000 0.000 0.000 0. 000 0.029 E 0.000 0.000 0.003 0.005 0. 000 0.000 0.000 0.000 0.000 0.008 ESE 0. 000 0.000 0.003 0.000 0.000 0. 000 0.000 0.000 0. 000 0.003 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 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 sw 0.000 0.000 0.000 WSW 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 SW 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 0.018 0.018 0.000 0. 000 0.000 0.000 0. 000 0.036 SUBTOTAL 0.000 0.001 0.091 0.080 0.008 0. 000 0.000 0.000 0.000 0.180 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 139.510 TOTAL HOURS OF STABILITY CLASS G 16. 620 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 3.890 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-57

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 17 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL PORTION)

FOURTH QUARTER E2-58

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-l.9 C/100 M)

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.01 1 0.010 0.000 0.000 0.020 NNE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 NE 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.012 SE 0.000 0.000 0.000 0.032 0.000 0.000 0.000 0.000 0.000 0.032 SSE 0.000 0.000 0.006 0.012 0.000 0.000 0.000 0.000 0.000 0.018 S 0.000 0.000 0.023 0.065 0.000 0.000 0.000 0.000 0.000 0.088 SSW 0.000 0.000 0.000 0.024 0.000 0. 000 0.000 0.000 0.000 0.024 SW 0.000 0.000 0.000 0.006 0.000 0. 000 0.000 0. 000 0.000 0.006 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 0.006 0.009 0.000 0.000 0.015 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.009 SUBTOTAL 0.000 0.000 0.029 0.151 0.000 0.017 0.027 0. 000 0.000 0.224 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS A 4.850 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 4 .850 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-59

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.024 0. 010 0.000 0. 000 0.033 NNE 0. 000 0.000 0.000 0.000 0. 011 0.000 0.000 0.000 0.000 0.011 NE 0.000 0.000 0.000 0. 000 0.000 0.006 0.000 0. 000 0.000 0.006 ENE 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.000 0.000 E 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 SE 0.000 0.000 0.002 0.018 0.000 0.000 0.000 0.000 0.000 0.020 SSE 0.000 0. 000 0.012 0.000 0. 000 0.000 0.000 0.000 0.000 0.012 S 0. 000 0.000 0.015 0.015 0. 000 0.000 0.000 0.000 0.000 0.030 SSW 0.000 0.000 0.000 0.006 0.000 0.000 0. 000 0.000 0.000 0.006 SW 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0. 000 WSW 0.000 0. 000 0.000 0. 000 0.005 0.008 0.000 0.000 0.000 0.013 W 0.000 0.000 0.000 0. 000 0.006 0.008 0. 000 0.000 0.000 0.014 WNW 0. 000 0.000 0.000 0.000 0.000 0.000 0. 009 0.000 0.000 0.009 NW 0. 000 0.000 0.000 0.000 0.000 0.007 0.019 0.000 0.000 0.026 NNW 0.000 0.000 0.000 0.000 0.008 0.025 0.010 0.000 0.000 0.043 SUBTOTAL 0. 000 0. 000 0.030 0.040 0.037 0.079 0.048 0.000 0.000 0.233 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS B 5.040 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 5.040 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-60

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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. 001 0.000 0.032 0.018 0.000 0. 000 0.052 NNE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 NE 0.000 0.000 0. 000 0.000 0.005 0.000 0.000 0.000 0. 000 0.005 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 E 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.018 0.000 0.000 0.000 0.000 0.000 0.018 SE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 SSE 0.000 0.000 0.006 0.043 0.000 0.000 0.000 0.000 0.000 0.050 S 0.000 0. 000 0.008 0.007 0.000 0.000 0.000 0.000 0.000 0.016 SSW 0.000 0. 000 0.000 0.008 0.000 0.000 0.000 0.000 0. 000 0.008 SW 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 0.000 WSW 0.000 0.000 0.000 0.000 0.006 0.008 0.000 0.000 0.000 0.014 W 0. 000 0.000 0.000 0.000 0.004 0.000 0.01 1 0.000 0.000 0. 015 WNW 0.000 0.000 0.000 0.000 0.002 0.027 0.051 0.000 0.000 0.080 NW 0.000 0.000 0.000 0.000 0.018 0.028 0.028 0.000 0. 000 0.075 NNW 0.000 0.000 0.000 0.000 0.000 0.058 0.018 0.000 0. 000 0.076 SUBTOTAL 0.000 0.000 0.022 0.079 0.036 0.153 0.127 0.000 0. 000 0.417 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS C 11.780 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 9.020 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-61

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.003 0.075 0.121 0.095 0.000 0.000 0.000 0.294 NNE 0.000 0.000 0.000 0.046 0.117 0.114 0.036 0.000 0.000 0.313 NE 0.000 0.000 0.000 0.018 0.035 0.051 0.069 0.000 0.000 0.174 ENE 0.000 0.000 0.000 0.017 0.030 0.008 0.010 0.000 0. 000 0.064 E 0. 000 0.000 0.007 0.073 0.007 0.017 0.000 0.000 0. 000 0.104 ESE 0. 000 0.000 0.026 0.271 0.304 0.151 0.035 0.000 0.000 0.787 SE 0. 000 0.000 0.066 0.076 0.123 0.145 0.000 0.000 0.000 0.410 SSE 0. 000 0.006 0.157 0.165 0.046 0.008 0.000 0.000 0.000 0.382

0. 000 0.003 0.111 0.052 0.008 0.000 0.000 0.000 0.000 0.174 S

SSW 0.000 0.000 0.013 0.016 0.018 0.000 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.029 0.000 0.000 0.000 0.000 0.000 0.029 WSW 0.000 0.000 0.000 0.019 0.036 0.051 0.000 0.000 0.000 0. 105 W 0.000 0.000 0.000 0.023 0.092 0.163 0.049 0.000 0.000 0.327 WNW 0. 000 0.000 0.000 0.009 0.074 0.189 0.313 0.031 0.000 0.616 NW 0.000 0.000 0.000 0.035 0.050 0.305 0.271 0.038 0.000 0.699 NNW 0.000 0.000 0.000 0.036 0.136 0.564 0.084 0.000 0. 000 0.820 SUBTOTAL 0. 000 0.009 0.382 0.961 1.196 1.862 0.866 0.069 0.000 5.347 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS D 1226.710 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 115.650 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-62

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.015 0.101 0.075 0.035 0.000 0. 000 0.000 0.227 NNE 0.000 0.000 0.009 0.037 0.043 0.000 0.000 0.000 0.000 0.088 NE 0.000 0.000 0.008 0.008 0.024 0. 000 0.000 0.000 0.000 0.040 ENE 0.000 0.000 0. 010 0.030 0.006 0.017 0.000 0.000 0.000 0.063 E 0.000 0.000 0.040 0.035 0.000 0.000 0.000 0.000 0.000 0.075 ESE 0.000 0.000 0.055 0.061 0. 101 0.071 0.000 0.000 0.000 0.289 SE 0.000 0.005 0.096 0.120 0.280 0.093 0.000 0. 000 0.000 0.594 SSE 0.000 0.003 0.185 0.330 0.444 0. 000 0.000 0.000 0.000 0.963 S 0.000 0.000 0.176 0.184 0.255 0.269 0.000 0.000 0.000 0.885 SSW 0.000 0.000 0.019 0.074 0.018 0.174 0.000 0.000 0.000 0.285 SW 0.000 0.000 0.016 0.012 0.000 0. 000 0.000 0. 000 0.000 0.028 WSW 0.000 0.000 0.003 0.049 0.055 0.008 0.000 0.000 0.000 0.115 W 0.000 0.000 0.005 0.023 0. 019 0.008 0.000 0.000 0.000 0.055 WNW 0.000 0.000 0.000 0.008 0.014 0.000 0.000 0.000 0.000 0.022 NW 0.000 0.000 0.003 0.016 0.026 0.016 0.034 0. 000 0.000 0.095 NNW 0.000 0.000 0.029 0.086 0.073 0.059 0.012 0. 000 0.000 0.259 SUBTOTAL 0.000 0.009 0. 670 1. 174 1.432 0.750 0.046 0. 000 0.000 4.081 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS E 738.670 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 88. 280 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-63

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.058 0.123 0.000 0.000 0.000 0.000 0. 000 0. 182 NNE 0. 000 0.000 0.025 0.038 0.000 0.000 0.000 0.000 0. 000 0.063 NE 0. 000 0.000 0.007 0. 000 0.000 0.000 0. 000 0.000 0.000 0.007 ENE 0.000 0. 000 0.003 0. 000 0.000 0.000 0.000 0.000 0. 000 0.003 E 0.000 0.000 0.045 0.026 0.000 0.000 0.000 0.000 0. 000 0.071 ESE 0.000 0.000 0.029 0.000 0.000 0.000 0. 000 0.000 0.000 0.029 SE 0. 000 0.015 0.051 0.123 0.069 0.000 0.000 0. 000 0.000 0.258 SSE 0. 000 0.002 0.105 0.220 0.046 0.041 0.000 0.000 0.000 0.415 S 0. 000 0.002 0.098 0.097 0.108 0.127 0.000 0.000 0.000 0.432 SSW 0. 000 0.003 0.015 0. 000 0.000 0. 000 0.000 0.000 0.000 0.018 SW 0. 000 0.000 0.004 0. 000 0.000 0.000 0.000 0.000 0.000 0.004 WSW 0. 000 0.000 0.004 0.000 0.000 0.000 0. 000 0.000 0. 000 0.004 W 0.000 0.000 0.001 0.000 0.000 0.000 0. 000 0.000 0. 000 0.001 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 0.006 0.000 0.000 0.000 0. 000 0.006 NNW 0.000 0.000 0.033 0.055 0.008 0.018 0. 000 0.000 0. 000 0.114 SUBTOTAL 0. 000 0.023 0.478 0.683 0.238 0.185 0. 000 0.000 0.000 1. 607 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS F 153.490 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 34.770 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-64

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

Browns Ferry Nuclear Plant PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.057 0.033 0.000 0.000 0.000 0.000 0.000 0.090 NNE 0.000 0.000 0.007 0.000 0.000 0.000 0. 000 0.000 0. 000 0.007 NE 0.000 0.000 0.002 0. 000 0. 000 0.000 0. 000 0.000 0.000 0.002 ENE 0.000 0.000 0.005 0.000 0. 000 0.000 0.000 0.000 0.000 0.005 E 0.000 0.006 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0O.011 ESE 0.000 0.010 0.011 0.000 0.000 0.000 0.000 0.000 0.000 0.020 SE 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.000 0.000 0.012 SSE 0.000 0.015 0.227 0.040 0. 000 0.000 0.000 0.000 0.000 0.282 S 0.000 0.003 0.015 0.000 0.012 0.000 0.000 0.000 0. 000 0.030 SSW 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 WSW 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 W 0.000 0.000 0.000 0.000 0. 000 0.000 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 0.008 0.000 0. 000 0.000 0.000 0.000 0.000 0.008 SUBTOTAL 0.000 0.034 0.349 0.073 0.012 0.000 0. 000 0.000 0.000 0.468 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF GROUND LEVEL RELEASE 267.730 TOTAL HOURS OF STABILITY CLASS G 22. 460 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 10.120 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTION MEASURED AT 10.50 METER LEVEL WIND SPEED MEASURED AT 10.50 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-65

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 18 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (ELEVATED PORTION)

FIRST QUARTER E2-66

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 NE 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 ENE 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 SSE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0. 000 0.000 0.000 0.000 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 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 WSW 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0. 000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS A 25. 860 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-67

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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

0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 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. 000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0.000 0.000 0.000 0 .000 0.000 0. 000 0.000 0.000 0.000 0.000 ENE 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 E

ESE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 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 SSE 0.000 0.000
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 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW W 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW NW 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 NNW SUBTOTAL 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS B 8.810 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-68

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0. 000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 ENE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0. 000 0.047 SSE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0. 000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SSW 0. 000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 SW 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 WSW 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0. 000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.035 0.000 0.035 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 0.000 0.047 0.047 0.000 0.000 0.035 0.000 0.130 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS C 13.020 TOTAL HOURS OF ELEVATED STABILITY CLASS C . 2.740 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-69

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24 .5 TOTAL N 0.000 0.000 0.047 0.047 0.275 2.684 2.277 0.214 0.008 5.553 NNE 0.000 0.000 0.095 0.142 0.591 2.751 0.698 0.000 0.000 4 .277 NE 0.000 0.000 0.047 0.285 0.363 0.761 0.039 0.000 0. 000 1.496 ENE 0.000 0.000 0.047 0.095 0.134 0.211 0. 000 0.000 0.000 0.487 E 0.000 0.000 0. 190 0.285 0.094 0.169 0.038 0.000 0.000 0.777 ESE 0.000 0.000 0.237 0.095 0.278 0.423 0.426 0.062 0. 000 1.522 SE 0.000 0.047 0.190 0.664 0.785 0.719 0.192 0.140 0.021 2.759 SSE 0. 000 0.000 0.285 0.522 0.047 0.367 0.383 0.268 0.000 1.871 S 0. 000 0.000 0.380 0.190 0.045 0.812 1.578 0.302 0.027 3.332 SSW 0.000 0.000 0.190 0.427 0.138 1.106 0.850 0.238 0.012 2.960 SW 0. 000 0.000 0.047 0.142 0.227 0.579 0.269 0.000 0. 000 1.265 WSW 0.000 0.000 0.095 0.237 0.185 0.246 0. 191 0.000 0.000 0.954 W 0.000 0.000 0.047 0.427 0.231 1.208 0.346 0.068 0.000 2.326 WNW 0.000 0.000 0.047 0. 095 0.452 1.371 1.579 0.603 0.004 4.153 NW 0.000 0.000 0.095 0.190 0.185 1.728 2. 196 0.901 0. 011 5.306 NNW 0. 000 0.000 0.047 0.047 0.181 2.007 1.853 0.067 0.003 4 .205 SUBTOTAL 0.000 0.047 2.087 3.890 4.210 17.142 12.917 2.863 0.086 43.242 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS D 1007.200 TOTAL HOURS OF ELEVATED STABILITY CLASS D 911. 540 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-70

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.095 0.095 0.180 1.594 0.154 0.000 0.000 2.119 NNE 0. 000 0.000 0.142 0.332 0.185 1.154 0. 000 0.037 0. 000 1.851 NE 0. 000 0. 000 0.142 0.237 0.223 0.750 0.000 0.000 0.000 1.353 ENE 0.000 0. 000 0.285 0. 190 0.141 0.597 0.079 0.000 0.000 1.291 E 0.000 0. 000 0.047 0.285 0.512 0.298 0.000 0.000 0.000 1.142 ESE 0.000 0.000 0.237 0.142 0.225 0.793 0.194 0.000 0.000 1.592 SE 0.000 0.000 0.237 0. 190 0.811 1.545 0.653 0.268 0.007 3.711 SSE 0. 000 0. 000 0.095 0.427 0.680 2.361 1. 895 0.472 0.021 5 . 952 S 0.000 0.047 0.095 0.380 0.727 2.068 2.507 0.789 0.042 6.655 SSW 0.000 0.047 0.142 0.237 0.179 0.782 0.966 0.068 0.011 2.435 SW 0.000 0. 000 0.095 0.237 0.182 0.502 0.273 0.000 0.000 1.289 WSW 0.000 0.000 0.095 0.332 0.184 0.259 0.000 0.000 0.000 0.869 W 0.000 0. 000 0.095 0.285 0.409 0.334 0.000 0.000 0.000 1.123 WNW 0.000 0. 000 0.047 0.142 0.182 0.126 0.078 0.000 0.000 0.576 NW 0. 000 0.000 0.095 0.142 0.414 0.375 0.233 0.000 0.000 1.259 NNW 0. 000 0.000 0.047 0.332 0.181 1.121 0.390 0.000 0.000 2. 072 SUBTOTAL 0. 000 0. 095 1.992 3.985 5.416 14.662 7.422 1.635 0.081 35 .288 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS E 822.100 TOTAL HOURS OF ELEVATED STABILITY CLASS E 743. 870 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-71

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0. 000 0.047 0.047 0.000 0.165 0.000 0.000 0.000 0.259 NNE 0. 000 0.000 0.047 0.047 0.045 0.083 0.000 0.000 0. 000 0.222 NE 0.000 0.000 0.095 0.095 0.142 0.250 0.000 0.000 0.000 0.581 ENE 0.000 0.000 0.095 0.047 0.092 0.042 0.000 0.000 0.000 0.276 E 0. 000 0. 000 0.047 0.047 0.045 0.125 0.000 0.000 0. 000 0.264 ESE 0. 000 0. 000 0.000 0.047 0.138 0.254 0.000 0.000 0.000 0.439 SE 0.000 0.000 0.190 0.095 0.182 0.371 0.079 0.000 0.000 0.916 SSE 0.000 0.000 0. 000 0.095 0.094 0.333 0.039 0.000 0.000 0.561 S 0.000 0.000 0.047 0.237 0.374 0.124 0.000 0.000 0.000 0.782 SSW 0.000 0. 000 0.000 0.142 0.000 0.043 0.000 0.000 0.000 0.185 SW 0. 000 0.000 0.000 0.000 0.047 0.040 0.000 0.000 0.000 0.088 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 0.000 0.000 0.000 0.000 0.000 0.047 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 0.047 0.046 0.126 0.039 0.000 0.000 0.259 SUBTOTAL 0.000 0.000 0.5 69 0.996 1.204 1. 954 0.157 0.000 0.000 4.881 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS F 159. 840 TOTAL HOURS OF ELEVATED STABILITY CLASS F 102. 890 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-72

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 2002 - MAR 31, 2002 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 0.045 0.000 0. 000 0.000 0. 000 0.045 NNE 0.000 0. 000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.000 0.047 0.000 0.000 0.000 0.039 0.000 0.000 0.087 ENE 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 E 0.000 0. 000 0.095 0.047 0.000 0.085 0.000 0.000 0.000 0.228 ESE 0.000 0.000 0.000 0.047 0.185 0.127 0. 000 0.000 0.000 0.359 SE 0.000 0.000 0.190 0.095 0.047 0.210 0.000 0.000 0.000 0.541 SSE 0.000 0.000 0.000 0.000 0.045 0.042 0. 000 0.000 0. 000 0.087 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 0.047 0.000 0.000 0.042 0. 000 0.000 0. 000 0.089 SW 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 W 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0. 000 WNW 0.000 0.000 0.000 0.047 0.000 0.000 0. 000 0.000 0. 000 0.047 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 0.095 0.000 0.043 0.000 0.000 0.000 0.138 sUBToTAL 0.000 0.000 0.380 0.332 0.368 0.588 0.039 0.000 0.000 1.707 TOTAL HOURS OF VALID OBSERVATIONS 2108.000 TOTAL HOURS OF ELEVATED RELEASES 1797.020 TOTAL HOURS OF STABILITY CLASS G 71.170 TOTAL HOURS OF ELEVATED STABILITY CLASS G 35.980 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/05/15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-73

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 19 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (ELEVATED PORTION)

SECOND QUARTER E2-74

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-l.9 C/100 M)

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0. 000 NE 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.000 0. 000 ENE 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0. 000 0. 000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 SE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 S 0.000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 WSW 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 W 0.000 0. 000 0.000 0.000 0. 000 0.000 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 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0. 000 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF ELEVATED RELEASES 1882.080 TOTAL HOURS OF STABILITY CLASS A 41.580 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-75

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH)

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 DIRECTION 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 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000

0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE
0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 E 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 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 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0. 000 SSE 0.000 S 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 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 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000
0. 000 WSW 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 W 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 0. 000 NW 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0. 000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF ELEVATED RELEASES 1882.080 TOTAL HOURS OF STABILITY CLASS B 9.540 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-76

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0. 000 E 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0. 000 0.000 0.042 0. 000 0.000 0.000 0.042 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 0.047 0.000 0.000 0.000 0.000 0. 000 0.047 SSW 0. 000 0.000 0.000 0.047 0.000 0.043 0.000 0.000 0.000 0.090 SW 0.000 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.043 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 0.004 0.004 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 0.000 0.095 0. 000 0.128 0.000 0.000 0.004 0.227 TOTAL HOURS OF VALID OBSERVATIONS 2114. 000 TOTAL HOURS OF ELEVATED RELEASES 1882.080 TOTAL HOURS OF STABILITY CLASS C 14.150 TOTAL HOURS OF ELEVATED STABILITY CLASS C 4.790 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-77

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.331 0.228 1.277 1.920 0.414 0.000 4.170 NNE 0.000 0.000 0.047 0.237 0.272 1.414 0.965 0.110 0.000 3.045 NE 0.000 0.000 0.095 0.142 0.225 0.703 0.077 0.000 0. 000 1.241 ENE 0.000 0. 000 0.000 0.189 0.185 0.258 0. 000 0.000 0.000 0.632 E 0.000 0.000 0.047 0.047 0.136 0.170 0.000 0.000 0.000 0.401 ESE 0.000 0.000 0.047 0.237 0.862 2.324 0.655 0.000 0. 000 4. 124 SE 0.000 0.000 0.284 0.757 1.139 2.642 1.922 0.393 0.001 7.139 SSE 0.000 0.000 0.473 0.662 0.682 1.820 0.735 0.111 0.004 4 . 487 S 0.000 0.000 0.378 0.757 0.548 1.257 1.461 0.246 0.011 4 . 659 SSW 0.000 0.000 0.662 0.5 68 0.496 1.878 1.432 0.212 0. 000 5.248 SW 0.000 0.000 0.520 0.615 0.543 1.208 0.193 0.000 0. 000 3.079 WSW 0.000 0.047 0.473 0.851 0.139 0.125 0.229 0.018 0. 000 1.883 W 0.000 0.000 0.142 0.520 0.318 0.042 0. 000 0.000 0.000 1.022 WNW 0.000 0. 000 0.095 0.378 0.320 0.701 0. 000 0.021 0.000 1.515 NW 0.000 0.000 0.142 0.473 0.731 1.551 0.427 0.064 0.000 3.388 NNW 0.000 0. 000 0.047 0.095 0.364 0.695 0.576 0.121 0.000 1.898 SUBTOTAL 0.000 0.047 3.453 6.859 7.186 18.066 10.593 1.711 0.017 47.933 TOTAL HOURS OF VALID OBSERVATIONS 2114. 000 TOTAL HOURS OF ELEVATED RELEASES 18 82.080 TOTAL HOURS OF STABILITY CLASS D 1073.710 TOTAL HOURS OF ELEVATED STABILITY CLASS D 1013.300 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-78

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24 .5 TOTAL N 0.000 0. 000 0.047 0.189 0.363 0.494 0.348 0.000 0.000 1.441 NNE 0.000 0. 000 0.047 0.095 0.687 1.206 0.154 0.000 0.000 2.189 NE 0.000 0. 000 0.095 0.331 0.412 0.832 0.196 0. 000 0.000 1.866 ENE 0.000 0. 000 0.189 0.378 0.273 0.502 0.194 0. 000 0.000 1.536 E 0.000 0.047 0.142 0.331 0.591 0.853 0.000 0.000 0.000 1.965 ESE 0.000 0.000 0.047 0.378 0.912 2.277 0.118 0.000 0.000 3.733 SE 0.000 0.000 0.189 0.520 0.681 1.711 0.888 0.155 0.010 4. 155 SSE 0.000 0.000 0.189 0.662 0.637 1.037 0.853 0.359 0.008 3.745 S 0.000 0.000 0.237 0.378 0.277 1.118 0.653 0. 000 0.006 2.669 SSW 0.000 0.000 0.142 0.331 0.271 0.821 0.733 0.056 0.000 2.353 SW 0.000 0.047 0.378 0.378 0.316 0.169 0.000 0. 000 0.000 1.289 WSW 0.000 0.000 0.284 0.142 0.276 0.254 0.078 0. 000 0.000 1.034 W 0.000 0.000 0.189 0.426 0.367 0.125 0.000 0. 000 0.000 1. 107 WNW 0.000 0.000 0.426 0.142 0.045 0.128 0.039 0.000 0.000 0.780 NW 0.000 0.000 0.284 0.047 0.047 0.371 0.077 0.000 0.000 0.827 NNW 0.000 0.000 0.142 0.237 0.136 0.250 0.039 0.000 0.000 0.803 SUBTOTAL 0.000 0.095 3.027 4.967 6.294 12. 147 4.369 0.570 0.024 31.492 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF ELEVATED RELEASES 1882. 080 TOTAL HOURS OF STABILITY CLASS E 741. 240 TOTAL HOURS OF ELEVATED STABILITY CLASS E 665.740 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-79

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.000 0.047 0.045 0.000 0.000 0.000 0.000 0.092 N

NNE 0.000 0. 000 0.000 0.047 0.088 0.739 0.000 0.000 0.000 0.875 0.000 0.000 0.047 0.047 0.226 0.377 0.157 0.000 0.000 0.854 NE ENE 0.000 0.000 0.000 0.237 0.408 0.254 0.157 0.000 0. 000 1.055 E 0 .000 0.000 0.047 0.095 0.311 0.378 0.000 0.000 0.000 0.831 0.000 0.000 0.000 0.047 0.088 0.288 0.039 0.000 0.000 0.463 ESE SE 0.000 0.000 0.047 0.237 0.184 0.376 0.000 0.000 0.000 0.844 SSE 0.000 0.000 0.095 0.189 0.272 0.291 0.000 0.000 0.000 0.847 S 0.000 0.000 0.000 0.142 0.455 0.168 0.000 0. 000 0.000 0.765 SSW 0.000 0.000 0.095 0.237 0.091 0.126 0.000 0.000 0.000 0.548 SW 0.000 0. 000 0.095 0.237 0.140 0.043 0.000 0.000 0.000 0.514 WSW 0.000 0.000 0.047 0.095 0.000 0.000 0.000 0.000 0.000 0.142 W 0.000 0.000 0. 000 0.142 0.047 0. 000 0.000 0.000 0. 000 0.189 WNW 0.000 0.000 0.000 0.284 0.000 0.000 0.000 0.000 0.000 0.284 NW 0.000 0.000 0.000 0.000 0.000 0.087 0.000 0.000 0.000 0.087 NNW 0.000 0.000 0.095 0.047 0.000 0.084 0.000 0.000 0.000 0.226 SUBTOTAL 0.000 0.000 0.568 2.129 2.355 3.211 0.353 0.000 0.000 8.616 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF ELEVATED RELEASES 1882. 080 TOTAL HOURS OF STABILITY CLASS F 207.340 TOTAL HOURS OF ELEVATED STABILITY CLASS F 182. 140 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-80

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.044 0.041 0.000 0.000 0.000 0.086 NE 0.000 0. 000 0.000 0.047 0.047 0.043 0.000 0.000 0.000 0.137 ENE 0.000 0.000 0.000 0.000 0.000 0.123 0.000 0.000 0.000 0.123 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 0.047 0.092 0.044 0.000 0.000 0.000 0.183 SSE 0.000 0.000 0. 000 0.095 0.000 0.000 0.000 0.000 0.000 0.095 S 0.000 0.000 0.047 0.000 0.045 0.000 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SW 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 WSW 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 W 0. 000 0.000 0.000 0.000 0.000 0.000 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 0.095 0.189 0.228 0.250 0.000 0.000 0.000 0.762 TOTAL HOURS OF VALID OBSERVATIONS 2114.000 TOTAL HOURS OF ELEVATED RELEASES 1882.080 TOTAL HOURS OF STABILITY CLASS G 26. 440 TOTAL HOURS OF ELEVATED STABILITY CLASS G 16.110 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S -

DATE PRINTED: 2002/08/06 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-81

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 20 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (ELEVATED PORTION)

THIRD QUARTER E2-82

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 0.000 NE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.090 0.043 0. 000 0.000 0.000 0.133 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 0.000 0.000 0. 000 0.090 0.043 0. 000 0.000 0.000 0.133 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 2016.490 TOTAL HOURS OF STABILITY CLASS A 18.920 TOTAL HOURS OF ELEVATED STABILITY CLASS A 2. 860 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-83

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0. 000 NE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0. 000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ESE 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 SE 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 SSE 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 S 0.000 0.000 0. 000 0.000 0.000 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 0.000 0.000 0.046 0.093 0.043 0.000 0.000 0.000 0.182 WSW 0.000 0.000 0.000 0.000 0. 000 0.042 0.000 0. 000 0.000 0.042 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. 000 0.046 0.093 0.085 0.000 0. 000 0.000 0.224 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 2016.490 TOTAL HOURS OF STABILITY CLASS B 9.590 TOTAL HOURS OF ELEVATED STABILITY CLASS B 4.830 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-84

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.039 0.000 0.000 0. 000 0.039 NNE 0.000 0. 000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0. 000 ESE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.000 0.045 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 S 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 SSW 0.000 0. 000 0.000 0.093 0.089 0.126 0.000 0. 000 0.000 0.308 SW 0.000 0.000 0.000 0.046 0.449 0.000 0. 000 0. 000 0.000 0.495 WSW 0.000 0. 000 0.000 0.046 0.045 0.000 0. 000 0.000 0.000 0.092 W 0.000 0. 000 0.000 0.046 0.089 0.042 0.000 0.000 0.000 0.177 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 0.000 0.232 0.716 0.207 0.038 0.000 0.000 1.193 TOTAL HOURS OF VALID OBSERVATIONS 215 6.000 TOTAL HOURS OF ELEVATED RELEASES 2016. 4 90 TOTAL HOURS OF STABILITY CLASS C 31. 740 TOTAL HOURS OF ELEVATED STABILITY CLASS C 25.720 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-85

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.371 0.417 0.183 1.129 0. 190 0.000 0.000 2.291 NNE 0.000 0.000 0.186 0.325 0.492 1.212 0.457 0.000 0.000 2.671 NE 0.000 0.046 0.139 0.464 0.179 0.487 0.077 0.000 0.000 1.392 ENE 0.000 0.000 0.093 0.093 0.000 0.366 0.000 0.000 0.000 0.551 E 0.000 0.000 0.186 0.186 0.314 0.203 0.037 0.000 0.000 0.926 ESE 0.000 0.000 0.139 0.325 0.403 0.851 0.154 0.000 0.000 1.872 SE 0.000 0.000 0.603 1.020 0.945 1.922 1.624 0.404 0.000 6.519 SSE 0.000 0.000 0.835 2.365 1.609 2.401 1.093 0.173 0.006 8. 482 S 0.000 0.000 0.881 1.623 1.512 1.718 0.340 0.013 0.001 6.087 SSW 0.000 0.000 1.160 1.855 0.937 1.229 0.376 0.030 0.000 5.587 SW 0.000 0.046 0.881 1.902 0.905 0.207 0.000 0.000 0.000 3.942 WSW 0.000 0.000 0.557 2.041 0.634 0.000 0.000 0.000 0. 000 3.231 W 0.000 0.000 0.417 0.974 1.035 0.417 0.000 0. 000 0.000 2.844 WNW 0.000 0.000 0.278 0.510 1.115 0.581 0.038 0.000 0.000 2. 523 NW 0.000 0.000 0.371 0.232 0.705 0.942 0.000 0.000 0.000 2.250 NNW 0.000 0.000 0.186 0.093 0.229 0.775 0.075 0.000 0. 000 1.357 SUBTOTAL 0.000 0.093 7.282 14.425 11.197 14.440 4.461 0.620 0.007 52.525 TOTAL HOURS OF VALID OBSERVATIONS 2 156.000 TOTAL HOURS OF ELEVATED RELEASES 2016.490 TOTAL HOURS OF STABILITY CLASS D 1182. 010 TOTAL HOURS OF ELEVATED STABILITY CLASS D 1132.430 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY - 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-86

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.139 0.371 0.313 0.604 0.231 0.000 0.000 1. 657 NNE 0.000 0. 000 0.417 0.4 17 0.398 1.661 0.460 0.029 0.000 3.383 NE 0.000 0.000 0.278 0.881 0.442 1.132 0.115 0.000 0.000 2.849 ENE 0.000 0.046 0.232 0.417 0.578 0.488 0.000 0.000 0.000 1.762 E 0.000 0.000 0.464 0.928 0.401 0.283 0.037 0.029 0.000 2.141 ESE 0.000 0.186 0.232 0.788 0.497 1.822 0.113 0.077 0.000 3.715 SE 0.000 0.000 0.278 0.557 0.675 0.528 0.037 0.018 0.000 2.093 SSE 0.000 0. 000 0.510 0.742 0.537 0.592 0.151 0.000 0.000 2.532 S 0.000 0.139 0.325 0.788 0.269 0.576 0.038 0. 000 0.000 2. 135 SSW 0.000 0.000 0.325 0.881 0.130 0.573 0.000 0.000 0.000 1.910 SW 0.000 0.046 0.557 0.742 0.134 0.082 0.000 0.000 0. 000 1.561 WSW 0.000 0.000 0.510 0.742 0.089 0.125 0.000 0.000 0.000 1.466 W 0.000 0.139 0.325 0.510 0.134 0.409 0.000 0. 000 0.000 1.516 WNW 0.000 0. 000 0.139 0.186 0.179 0.081 0.038 0.000 0.000 0.623 NW 0.000 0.000 0.232 0.232 0.224 0.250 0.000 0.034 0.000 0.973 NNW 0.000 0. 000 0.093 0.278 0.312 0.166 0.000 0.000 0.000 0.849 SUBTOTAL 0.000 0.557 5.056 9.462 5.312 9.372 1.219 0.187 0.000 31.165 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 2016. 4 90 TOTAL HOURS OF STABILITY CLASS E 717.040 TOTAL HOURS OF ELEVATED STABILITY CLASS E 671.910 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-87

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.186 0.139 0.220 0.412 0. 000 0. 000 0. 000 0.957 NNE 0.000 0.000 0.139 0.046 0.134 1.173 0.115 0.000 0. 000 1. 608 NE 0.000 0.000 0.046 0.139 0.135 0.769 0.038 0.000 0.000 1.128 ENE 0.000 0.046 0.093 0.139 0.179 0.332 0.000 0.000 0. 000 0.789 E 0. 000 0.000 0.046 0.046 0.177 0.500 0.000 0.000 0. 000 0.769 ESE 0.000 0.000 0.046 0.093 0.046 0.359 0.000 0.000 0.000 0.545 SE 0.000 0.000 0.000 0.186 0.044 0.000 0.000 0.000 0. 000 0.229 SSE 0. 000 0.000 0.093 0.232 0.043 0.000 0.000 0.000 0. 000 0.368 S 0. 000 0.046 0. 000 0.093 0.000 0.000 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.04 6 0. 000 0.136 0.084 0.000 0.000 0.000 0.267 SW 0.000 0.000 0.046 0.186 0.000 0.000 0.000 0.000 0.000 0.232 WSW 0.000 0.000 0.046 0. 000 0.045 0.000 0.000 0.000 0. 000 0.092 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 0.046 0.046 0.000 0.000 0.000 0. 000 0.093 NNW 0.000 0.000 0.046 0.139 0.132 0.167 0.000 0.000 0. 000 0.484 SUBTOTAL 0.000 0.093 0.835 1.484 1.339 3.795 0.154 0.000 0.000 7.700 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 2016.490 TOTAL HOURS OF STABILITY CLASS F 180. 080 TOTAL HOURS OF ELEVATED STABILITY CLASS F 166. 010 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-88

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 2002 - SEP 30, 2002 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 0.161 0.000 0. 000 0.000 0.161 NNE 0.000 0. 000 0.000 0.046 0. 000 0.122 0.000 0. 000 0. 000 0.168 NE 0.000 0.000 0.000 0.000 0.088 0.082 0.000 0. 000 0.000 0.169 ENE 0.000 0. 000 0.000 0.000 0.045 0.000 0. 000 0. 000 0.000 0.045 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 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 0. 000 0. 000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 0.046 0.046 0.133 0.365 0. 000 0.000 0.000 0.590 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 2016. 4 90 TOTAL HOURS OF STABILITY CLASS G 16. 620 TOTAL HOURS OF ELEVATED STABILITY CLASS G 12.730 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2002/12/03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-89

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 21 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (ELEVATED PORTION)

FOURTH QUARTER E2-90

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-l.9 C/100 M)

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 NE 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 ENE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0. 000 0.000 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 SE 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 S 0.000 0.000 0. 000 0.000 0.000 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. 000 0.000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 W 0.000 0. 000 0.000 0.000 0.000 0.000 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 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF ELEVATED RELEASES 1895.270 TOTAL HOURS OF STABILITY CLASS A 4.850 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-91

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0. 000 0.000 0. 000 0. 000 0. 000 0.000 0. 000 0.000 0. 000 E 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 ESE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 SE 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 S 0.000 0. 000 0.000 0.000 0.000 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. 000 0.000 0. 000 0. 000 0.000 0.000 0. 000 0.000 0. 000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0. 000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 TOTAL HOURS OF VALID OBSERVATIONS 2163. 000 TOTAL HOURS OF ELEVATED RELEASES 1895.270 TOTAL HOURS OF STABILITY CLASS B 5.040 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-92

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 E 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 SSE 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 WSW 0.000 0.000 0. 000 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.000 W 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.000 0.035 0.000 0.035 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 0.046 0.000 0. 000 0. 000 0. 000 0.000 0.046 SUBTOTAL 0.000 0. 000 0.046 0.046 0.000 0.000 0.000 0.035 0.000 0.128 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF ELEVATED RELEASES 1895.270 TOTAL HOURS OF STABILITY CLASS C 11.780 TOTAL HOURS OF ELEVATED STABILITY CLASS C 2.760 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT, 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-93

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

Browns Ferry Nuclear Plant

?ART 2 OF 2 ELEVATED RELEASE MOD E OCT 1, 2002 - DEC 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24 .5 TOTAL N 0.000 0.000 0.185 0.416 0.669 1.953 1.137 0.167 0.000 4.527 NNE 0.000 0.000 0.139 0.693 0.798 1.460 0.306 0.033 0. 000 3.429 NE 0.000 0.000 0.092 0.693 0.671 0.607 0.000 0.043 0.000 2.108 ENE 0.000 0.000 0.139 0.231 0.223 0.208 0.075 0.000 0.000 0.877 E 0.000 0.000 0.231 0.462 0.489 0.164 0.038 0.000 0.000 1.385 ESE 0.000 0.000 0.139 0.416 1.024 0.977 0.112 0.012 0.000 2.680 SE 0.000 0.000 0.231 0.509 0.669 1.344 1.274 0.381 0.042 4.449 SSE 0.000 0.000 0.416 0.601 0.539 1.212 1.317 0.210 0.006 4.302 S 0.000 0.046 0.370 0.370 0.133 1.526 0.712 0.249 0. 009 3.413 SSW 0.000 0.000 0.185 0.509 0.223 0.605 0.263 0.120 0.028 1.933 SW 0.000 0.000 0.601 0.462 0.043 0.686 0.152 0.000 0.000 1.944 WSW 0.000 0.000 0.231 0.462 0.136 0.720 0.379 0.000 0.000 1.929 W 0.000 0.046 0.139 0.509 0.404 1.220 0.600 0.078 0.000 2.995 WNW 0.000 0.046 0.185 0.555 0.488 1.510 0.977 0.440 0.008 4.209 NW 0.000 0.046 0.277 0.555 0.713 1.418 1.608 0.267 0.000 4.886 NNW 0.000 0.000 0.277 0.832 0.706 2.250 2.067 0.170 0.000 6.301 SUBTOTAL 0.000 0.185 3.837 8.276 7.928 17.861 11.017 2. 170 0.093 51.367 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF ELEVATED RELEASES 18 95.270 TOTAL HOURS OF STABILITY CLASS D 1226.710 TOTAL HOURS OF ELEVATED STABILITY CLASS D 1111. 060 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-94

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24. 4 >=24 .5 TOTAL N 0. 000 0.092 0.139 0.370 0.406 1.061 0.228 0.000 0. 000 2.296 NNE 0.000 0.046 0.092 0.416 0.618 1.216 0.075 0.024 0.000 2.487 NE 0. 000 0.000 0.092 0.185 0.404 0.243 0.075 0.027 0. 000 1.026 ENE 0. 000 0.092 0.277 0.324 0.221 0.247 0.037 0.000 0.000 1. 198 E 0. 000 0.000 0.139 0.231 0.536 0.245 0.037 0.000 0.000 1. 188 ESE 0.000 0. 000 0.046 0.324 0.571 0.661 0.150 0.012 0.000 1.763 SE 0.000 0.046 0.277 0.416 0.794 1.070 0.564 0.385 0.043 3.595 SSE 0.000 0.000 0.277 0.647 0.675 0.676 0.790 0.410 0.014 3.490 S 0. 000 0.046 0.324 0.509 0.496 0.878 0.905 0.254 0.008 3.420 SSW 0.000 0.000 0.370 0.462 0.488 0.406 0.112 0.050 0.012 1.902 SW 0.000 0.046 0.509 0.370 0.353 0.247 0.000 0.000 0.000 1.525 WSW 0. 000 0.046 0.231 0.370 0.315 0.408 0. 000 0.000 0.000 1.371 W 0. 000 0.092 0.092 0.324 0.183 0. 119 0.153 0. 000 0.000 0.963 WNW 0.000 0.139 0.185 0.092 0.043 0.043 0.037 0.000 0. 000 0.540 NW 0.000 0.000 0.139 0.185 0.266 0.200 0.077 0.000 0.000 0.866 NNW 0.000 0.000 0.185 0.231 0.659 1.137 0.227 0.000 0.000 2.439 SUBTOTAL 0.000 0.647 3.375 5.455 7.028 8.857 3.468 1. 160 0.078 30. 069 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF ELEVATED RELEASES 18 95.270 TOTAL HOURS OF STABILITY CLASS E 738. 670 TOTAL HOURS OF ELEVATED STABILITY CLASS E 650. 390 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-95

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.046 0.413 0.000 0.000 0.000 0.506 NNE 0.000 0.000 0.092 0.092 0.087 0.279 0.000 0.000 0.000 0.551 NE 0.000 0.000 0.000 0.000 0.224 0.126 0.000 0.000 0.000 0.350 ENE 0.000 0.000 0.046 0.000 0.000 0.082 0.000 0.000 0.000 0.128 E 0.000 0.000 0.000 0.000 0.087 0.000 0.000 0.000 0.000 0.087 ESE 0.000 0.000 0.092 0.092 0.046 0.207 0.000 0.000 0.000 0.438 SE 0.000 0.000 0.139 0.139 0.491 0.248 0.000 0.032 0.000 1.048 SSE 0.000 0.000 0.046 0.324 0.088 0.000 0.000 0.000 0.000 0.458 S 0.000 0.000 0.092 0.277 0.228 0.041 0.000 0.000 0.000 0.639 SSW 0.000 0.000 0.046 0.324 0.178 0.042 0.000 0.000 0.000 0.589 SW 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.000 0.000 0.185 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.092 0.045 0.000 0.000 0.000 0.000 0.137 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.280 0.000 0.000 0.000 0.280 SUBTOTAL 0.000 0.000 0.601 1.618 1.519 1.718 0.000 0.032 0.000 5.489 TOTAL HOURS OF VALID OBSERVATIONS 2 163.000 TOTAL HOURS OF ELEVATED RELEASES 1895.270 TOTAL HOURS OF STABILITY CLASS F 153. 490 TOTAL HOURS OF ELEVATED STABILITY CLASS F 118.720 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-96

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

Browns Ferry Nuclear Plant PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 2002 - DEC 31, 2002 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 0.123 0.000 0.000 0.000 0.123 NNE 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.000 0.039 NE 0.000 0.000 0.000 0.000- 0.131 0.000 0.000 0.000 0. 000 0.131 ENE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.046 0.000 0.000 0. 000 0.000 0.000 0.000 0.046 SE 0.000 0. 000 0. 000 0.000 0.046 0. 000 0.000 0.000 0.000 0.046 SSE 0.000 0.000 0.000 0.092 0.000 0. 000 0.000 0.000 0. 000 0.092 S 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.092 SSW 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 SW - 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 0.046 0.046 0.139 0.177 0.162 0.000 0.000 0. 000 0.571 TOTAL HOURS OF VALID OBSERVATIONS 2163.000 TOTAL HOURS OF ELEVATED RELEASES 1895.270 TOTAL HOURS OF STABILITY CLASS G 22.460 TOTAL HOURS OF ELEVATED STABILITY CLASS G 12.340 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DIRECTION MEASURED AT 45.74 METER LEVEL WIND SPEED MEASURED AT 45.74 METER LEVEL EFFLUENT VELOCITY = 12.60 M/S DATE PRINTED: 2003/02/07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-97

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 22 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FIRST QUARTER E2-98

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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. 000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 E 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 ESE 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 SE 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 S 0.000 0. 000 0.000 0. 000 0.000 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 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0.000 W 0.000 0. 000 0.000 0.000 0.000 0.000 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 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 0. 000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-99

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 NE 0.000 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0. 000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 E 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 ESE 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0. 000 SSE 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0. 000 0.000 S 0.000 0.000 0.000 0. 000 0.000 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 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0. 000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0. 000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 00

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

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 DIRECTION 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 ENE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 E
0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE
0. 000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 SSE S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0. 000 0.047 SSW SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 WNW 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW NNW 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.047 0.000 0.142 SUBTOTAL TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS C 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 3 HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL 0

TOTAL HOURS CALM METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 10.90 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 01

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.047 0.000 0.189 0.236 2.500 3.208 0.708 0.189 7.075 NNE 0.000 0. 000 0.094 0.047 0.377 2.783 1. 557 0.142 0.000 5.000 NE 0.000 0. 000 0.047 0.142 0.236 0.896 0.236 0.000 0. 000 1.557 ENE 0.000 0.000 0.094 0.047 0.047 0.236 0.094 0.000 0. 000 0.519 E 0.000 0. 000 0.094 0.142 0.142 0.330 0.094 0.047 0.000 0.849 ESE 0.000 0.000 0.142 0.189 0.236 0.660 0.330 0.330 0.047 1. 934 SE 0.000 0. 000 0.094 0.377 0.519 0.425 0.189 0.236 0.236 2.075 SSE 0.000 0. 000 0.236 0.377 0.283 0.377 0.519 0.613 0.000 2.406 S 0.000 0.047 0.283 0.142 0.047 0.660 1.840 0.896 0.283 4. 198 SSW 0. 000 0.000 0.142 0.330 0.094 0.708 1. 462 0.566 0.142 3.443 SW 0.000 0. 000 0.236 0.236 0.047 0.472 0.566 0.142 0. 000 1.698 WSW 0.000 0. 000 0.094 0.142 0.236 0.377 0.236 0.236 0.000 1.321 W 0.000 0.000 0.094 0.142 0.425 0.991 0.708 0.377 0.094 2.830 WNW 0.000 0. 000 0.047 0.189 0.283 1.509 2. 170 1.415 0.566 6.179 NW 0.000 0. 000 0.047 0.094 0.189 0.849 2.170 1.934 0.236 5.519 NNW 0.000 0. 000 0.000 0.047 0.142 1.509 2.689 0.566 0.142 5.094 SUBTOTAL 0.000 0.094 1.745 2.830 3.538 15.283 18.066 8.208 1.934 51. 698 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS D 1100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1096 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 13.42 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-102

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.094 0.047 0.094 0.896 1.321 0.047 0.000 2.500 NNE 0.000 0.000 0.047 0.142 0.189 0.613 1.038 0.094 0.000 2. 123 NE 0.000 0.000 0.236 0.142 0.142 0.472 0.377 0.047 0.000 1.415 ENE 0.000 0. 000 0.142 0.236 0.094 0.660 0.425 0.047 0.000 1. 604 E 0.000 0. 000 0.094 0.094 0.142 0.472 0.142 0.000 0.000 0.943 ESE 0. 000 0. 000 0.142 0.094 0.189 0.472 0.236 0.142 0.000 1.274 SE 0. 000 0.000 0.189 0.047 0.283 1.038 0.755 0.472 0.330 3.113 SSE 0.000 0.000 0.000 0.142 0.142 1.462 2.453 1.509 0.566 6.274 S 0.000 0. 000 0.047 0.189 0.283 2.594 4.340 2.075 0.896 10. 425 SSW 0. 000 0. 000 0.142 0.142 0.377 0. 991 1.462 0.519 0.283 3.915 SW 0.000 0.000 0.094 0.189 0.189 0.566 0.708 0.047 0. 000 1.792 WSW 0.000 0.000 0.047 0.094 0.189 0.283 0.283 0.000 0.000 0.896 W 0.000 0.000 0.047 0.094 0.000 0.613 0.330 0.000 0. 000 1.085 WNW 0.000 0.000 0.000 0.094 0.094 0.472 0.189 0.000 0.000 0.849 NW 0. 000 0.000 0.047 0.142 0.330 0.189 0.377 0.142 0.000 1.226 NNW 0.000 0.000 0.047 0.047 0.236 0.472 0.849 0.094 0.000 1.745 SUBTOTAL 0. 000 0.000 1.415 1. 934 2.972 12.264 15. 283 5.236 2.075 41. 179 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS E 881 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 873 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 13.54 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-103

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.047 0.094 0.094 0.000 0.000 0.236 NNE 0.000 0.000 0.000 0.000 0.000 0.094 0.142 0.000 0.000 0.236 NE 0.000 0.000 0.047 0.047 0.047 0.189 0.236 0.047 0.000 0.613 ENE 0.000 0. 000 0.000 0.047 0.000 0.189 0.047 0. 000 0. 000 0.283 E 0.000 0. 000 0.047 0.094 0.142 0.000 0.047 0. 000 0.000 0.330 ESE 0.000 0. 000 0.000 0.000 0.000 0.094 0.047 0.000 0. 000 0.142 SE 0.000 0.000 0.094 0.047 0.094 0.425 0.142 0.000 0.000 0.802 SSE 0.000 0.000 0.000 0.047 0.047 0.236 0.472 0.000 0.000 0.802 S 0.000 0.000 0.000 0.000 0.094 0.425 0.094 0.094 0.000 0.708 SSW 0.000 0. 000 0.000 0.047 0.094 0.425 0.142 0.000 0.000 0.708 SW 0.000 0.000 0.000 0.000 0.047 0.000 0.094 0.000 0.000 0.142 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 0.047 0.000 0.000 0.000 0.000 0.047 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 0.047 0.047 0.047 0.000 0.142 SUBTOTAL 0.000 0.000 0.189 0.330 0.660 2.217 1.604 0.189 0.000 5.189 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS F 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 110 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 10.97 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 04

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

Browns Ferry Nuclear Plant JAN 1, 2002 - MAR 31, 2002 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 0.000 0.000 0.000 0.094 0.094 0.000 0.000 0.189 NE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0. 000 0.000 0.000 0.000 0.094 0.000 0.047 0.000 0.000 0.142 E 0.000 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.094 ESE 0. 000 0.000 0.000 0.000 0.047 0.142 0.047 0.000 0.000 0.236 SE 0.000 0.000 0.000 0.000 0.047 0.377 0.094 0.047 0.000 0.566 SSE 0.000 0.000 0.000 0.047 0.000 0.094 0.000 0.000 0.000 0.142 S 0.000 0.000 0.000 0.094 0.047 0.000 0.047 0.000 0. 000 0.189 SSW 0.000 0.000 0.000 0.000 0.094 0.000 0.047 0.047 0.000 0.189 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 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 O.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 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0. 000 0.000 0.000 0.142 0.377 0.755 0.425 0.094 0.000 1.792 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2132 TOTAL HOURS OF STABILITY CLASS G 38 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 38 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2120 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/05/15 MEAN WIND SPEED = 10.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 05

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 23 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES SECOND QUARTER E2-106

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 E 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 ESE 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 SE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 SSE 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 S 0.000 0. 000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 W 0.000 0. 000 0.000 0.000 0.000 0.000 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 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 07

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 E 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0.000 ESE 0.000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 SE 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 S 0. 000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 W 0.000 0.000 0. 000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-108

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0. 000 0.000 0.000 0.000 0. 000 0.000 NE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 0. 000 E 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0. 000 0.047 0. 000 0. 000 0.000 0.047 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 0.047 0. 000 0.000 0.000 0.000 0.000 0.047 SSW 0.000 0.000 0.000 0. 000 0. 000 0.047 0.000 0.000 0.000 0.047 SW 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.094 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 0.047 0.047 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 0.000 0.094 0.000 0.141 0.000 0. 000 0.047 0.281 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS C 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 12.33 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-109

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.141 0.281 0.984 2.015 1. 172 0.047 4. 639 NNE 0.000 0.000 0.047 0.187 0.234 1.687 1.265 0.281 0.000 3.702 NE 0. 000 0.000 0.000 0.187 0.141 0.750 0.328 0.000 0. 000 1.406 ENE 0. 000 0.000 0.047 0.141 0.187 0.375 0.000 0. 000 0. 000 0.750 E 0. 000 0.000 0.047 0.000 0.000 0.281 0.047 0.000 0.000 0.375 ESE 0. 000 0.000 0.094 0.141 0.515 3.140 1.781 0.234 0.000 5.904 SE 0.000 0.000 0.094 0.422 0.890 2.156 1.968 1.500 0.187 7.216 SSE 0.000 0.000 0.234 0.515 0.703 1.687 1.218 0.422 0.281 S.061 S 0.000 0.000 0.375 0.328 0.422 1.359 1.453 0.750 0.141 4.827 SSW 0.000 0.000 0.187 0.656 0.281 1.640 1.781 1. 125 0.187 5.858 SW 0. 000 0.000 0.515 0.515 0.234 0.984 1.312 0.375 0.000 3.936 WSW 0. 000 0.000 0.375 0.703 0.281 0.141 0.141 0.281 0.094 2.015 W 0.000 0.000 0.375 0.422 0.422 0.281 0.047 0.000 0.000 1.546 WNW 0.000 0.000 0.047 0.515 0.515 0.937 0.187 0.000 0.047 2.249 NW 0.000 0.000 0.047 0.4 69 0.609 1.500 0.562 0.094 0.094 3.374 NNW 0. 000 0.047 0.000 0.047 0.187 0.609 0.656 0.469 0.047 2.062 SUBTOTAL 0.000 0.047 2.484 5.389 5.904 18.510 14.761 6.701 1. 125 54 .920 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS D 1180 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1172 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 11.82 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 10

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.234 0.187 0.609 0.281 0.000 1.359 NNE 0.000 0.047 0.047 0.000 0.328 0.890 0.843 0.141 0.000 2.296 NE 0.000 0.000 0.000 0.094 0.234 0.843 0.656 0.234 0.000 2.062 ENE 0.000 0.000 0.000 0.000 0.094 0.609 0.328 0.187 0.000 1.218 E 0.000 0.000 0.141 0.094 0.281 0.656 0.234 0.000 0.000 1.406 ESE 0.000 0.047 0.000 0.234 0.281 1.359 1.734 0.000 0.000 3.655 SE 0.000 0.000 0.141 0.281 0.422 1.453 1.828 0.328 0.141 4.592 SSE 0.000 0.000 0.187 0.234 0.422 1.687 0.984 0.562 0.422 4.499 S 0.000 0.000 0.234 0.094 0.234 1.500 1.500 0.422 0.094 4.077 SSW 0.000 0.047 0. 000 0.141 0.375 0.515 1.172 0.656 0.000 2.905 SW 0.000 0.047 0.234 0.094 0.234 0.469 0.281 0.047 0.000 1.406 WSW O .000 0.000 0.328 0.234 0.094 0.515 0.187 0.000 0.000 1.359 W 0.000 0.047 0.141 0.234 0.187 0.281 0.141 0. 000 0.000 1.031 WNW 0.000 0.000 0.187 0.375 0.281 0.328 0.047 0.000 0.000 1.218 NW 0.000 0.047 0.234 0.094 0.141 0.141 0.234 0.047 0.000 0.937 NNW 0.000 0. 000 0.094 0.047 0.141 0.281 0.234 0.047 0.000 0.843 SUBTOTAL 0.000 0.281 1.968 2.296 3.983 11.715 11.012 2. 952 0.656 34.864 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS E 747 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 744 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 11.68 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-111

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.047 0.000 0.000 0.000 0.094 NNE 0.000 0.000 0.000 0.000 0.000 0.187 0.422 0.094 0.000 0.703 NE 0.000 0.000 0. 000 0.047 0.000 0.328 0.234 0.141 0.000 0.750 ENE 0.000 0.000 0.094 0.000 0.047 0.281 0.375 0.141 0.000 0.937 E 0.000 0.000 0.047 0.047 0.000 0.469 0.141 0. 000 0.000 0.703 ESE 0.000 0.000 0.000 0.000 0.047 0.469 0.234 0. 000 0.000 0.750 SE 0.000 0.000 0.000 0.094 0.094 0.375 0.187 0. 000 0.000 0.750 SSE 0.000 0.000 0.047 0.000 0.234 0.187 0.515 0.000 0.000 0.984 S 0.000 0.000 0.047 0.047 0.000 0.422 0.562 0. 000 0.000 1.078 SSW 0.000 0.000 0.047 0.047 0.141 0.234 0.187 0. 000 0. 000 0.656 SW 0.000 0.000 0.000 0.000 0.047 0.422 0.234 0. 000 0.000 0.703 WSW 0.000 0.000 0.000 0.094 0.000 0.094 0.000 0.000 0. 000 0.187 W 0.000 0.000 0.047 0.094 0.000 0.047 0.000 0.000 0.000 0.187 WNW 0.000 0.000 0.000 0.047 0.141 0.187 0.000 0. 000 0.000 0.375 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0. 000 0.000 0.047 NNW 0.000 0.000 0. 000 0.094 0.047 0.047 0.047 0. 000 0.000 0.234 SUBTOTAL 0.000 0.000 0.328 0.656 0.797 3.796 3.187 0.375 0.000 9.138 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS F 195 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 195 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 11.21 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-112

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

Browns Ferry Nuclear Plant APR 1, 2002 - JUN 30, 2002 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 0.000 0.000 0.047 0.047 0.000 0.000 0. 000 0.094 NE 0.000 0.000 0.000 0.000 0.000 0.094 0. 000 0.000 0. 000 0.094 ENE 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 E 0.000 0.000 0.000 0.000 0.000 0.000 0.141 0.000 0. 000 0.141 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 0.047 0.000 0.000 0.000 0. 000 0.047 S 0.000 0.000 0.000 0.000 0.094 0.000 0.047 0.000 0.000 0.141 SSW 0. 000 0.000 0.000 0.094 0.000 0. 000 0.000 0.000 0.000 0.094 SW 0.000 0.000 0.047 0. 000 0.047 0.000 0. 000 0.000 0. 000 0.094 WSW 0.000 0.000 0.000 0.047 0.000 0.000 0. 000 0.000 0.000 0.047 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 0.047 0.141 0.234 0.187 0.187 0. 000 0.000 0.797 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2145 TOTAL HOURS OF STABILITY CLASS G 17 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 17 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2 134 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/08/06 MEAN WIND SPEED = 8.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-113

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 24 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES THIRD QUARTER E2-114

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0. 000 0.000 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 0.000 0.000 0.000 0.000 0.139 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 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0. 139 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 9.70 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-115

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.046 0.000 0.185 0.000 0.000 0.000 0.232 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 0.000 0.000 0.046 0.000 0.185 0.000 0.000 0.000 0.232 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS B 5 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 5 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 8.12 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-116

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.093 0.000 0.000 0.093 NNE 0. 000 0.000 0.000 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 E 0. 000 0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.046 0. 000 0.000 0. 000 0.000 0.046 SSE 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 SSW 0.000 0.000 0.000 0.046 0.046 0.278 0.000 0.000 0.000 0.371 SW 0.000 0.000 0.000 0.000 0.139 0.325 0.000 0.000 0.000 0.464 WSW 0.000 0.000 0. 000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 W 0.000 0. 000 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.185 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 0.000 0.046 0.371 0.742 0.093 0.000 0.000 1.252 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS C 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 27 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 8.55 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-117 J

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.325 0.556 0.139 0.742 0.974 0.000 0. 000 2.735 NNE 0.000 0.000 0.185 0.232 0.464 0.974 0.881 0.046 0.000 2.782 NE 0.000 0.000 0.093 0.185 0.232 0.278 0.371 0.000 0.000 1.159 ENE 0. 000 0.000 0.232 0.232 0.000 0.185 0.325 0.000 0. 000 0.974 E 0. 000 0.000 0.139 0.093 0.139 0.278 0.139 0.046 0. 000 0.834 ESE 0.000 0.000 0.093 0.325 0.278 1.066 0.881 0.046 0.000 2. 689 SE 0.000 0.000 0.371 1.020 1.066 1.854 2.086 1.066 0.139 7.603 SSE 0.000 0.000 0.742 1.298 1.669 2.411 1.391 0.649 0.046 8.206 S 0.000 0.046 0.788 1.344 0.834 2.364 0.649 0.139 0.093 6.259 SSW 0.000 0.000 1.020 0.834 0.881 1.808 0.834 0.232 0.046 5.656 SW 0.000 0.000 0.834 1.113 0.742 1.484 0.046 0.000 0.000 4.219 WSW 0. 000 0.000 0.371 1.623 1.113 0.417 0.000 0. 000 0.000 3.523 W 0. 000 0.000 0.232 0.742 1.205 0.881 0.093 0.000 0.000 3.153 WNW 0.000 0.000 0.417 0.464 0.927 1.113 0.000 0.000 0.000 2.92 1 NW 0.000 0. 000 0.185 0.232 0.464 1.205 0.093 0.000 0.000 2. 179 NNW 0.000 0.04 6 0.185 0.093 0.232 0.603 0.325 0.046 0.000 1.530 SUBTOTAL 0.000 0.093 6.212 10.385 10. 385 17. 663 9.087 2.272 0.325 56. 421 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS D 1233 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1217 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 8.71 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-118

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0. 000 0.185 0.371 0.139 0.417 0.695 0.046 0.000 1.854 NNE 0. 000 0. 000 0.139 0.093 0.325 0.742 1.484 0.371 0. 000 3.153 NE 0.000 0.000 0.139 0.232 0.371 0.742 1.020 0.278 0. 000 2.782 ENE 0.000 0.000 0.046 0.185 0.325 0.834 0.556 0.000 0. 000 1. 947 E 0.000 0.000 0.232 0.325 0.046 0.371 0.185 0.000 0.185 1.344 ESE 0.000 0.000 0.232 0.371 0.325 1.113 0.974 0.093 0.093 3.199 SE 0. 000 0.093 0.371 0.927 0.649 0.974 0.788 0.000 0.046 3.848 SSE 0.000 0.000 0.139 0.510 0.603 0.927 0.139 0.046 0.000 2.364 S 0.000 0.139 0.093 0.464 0.556 0.603 0.417 0.000 0.000 2.272 SSW 0.000 0.000 0.371 0.556 0.325 0.464 0.603 0.000 0.000 2.318 SW 0.000 0.000 0.232 0.649 0.278 0.556 0.046 0.000 0.000 1 .762 WSW 0.000 0.000 0.232 0.649 0.278 0.232 0.046 0.000 0. 000 1.437 W 0.000 0.000 0.232 0.742 0.464 0.4 17 0.139 0.000 0. 000 1.994 WNW 0.000 0.000 0.046 0.139 0.232 0.139 0.232 0.000 0.000 0.788 NW 0. 000 0.046 0.139 0.139 0.232 0.510 0.046 0.046 0.000 1. 159 NB W 0.000 0.000 0.139 0.278 0.139 0.232 0.046 0.000 0. 000 0.834 SUBTOTAL 0.000 0.278 2.967 6.630 5.285 9.272 7.418 0.881 0.325 33.055 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS E 726 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 713 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 9.05 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-119

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.000 0.371 0.371 0.000 0.000 0.834 NNE 0.000 0. 000 0.000 0.139 0.139 0.232 0.927 0.185 0.000 1.623 NE 0.000 0. 000 0.000 0.046 0. 000 0.278 0.556 0.325 0.000 1.205 ENE 0.000 0. 000 0.093 0.046 0. 000 0.185 0.4 17 0.046 0.000 0.788 E 0.000 0. 000 0.046 0.046 0.185 0.417 0.093 0.000 0.000 0.788 ESE 0.000 0.046 0.046 0.000 0.185 0.278 0.371 0.000 0.000 0.927 SE 0.000 0.000 0.000 0.093 0.093 0.093 0.139 0. 000 0.000 0.4 17 SSE 0.000 0.046 0.046 0.046 0.185 0.093 0.000 0. 000 0.000 0.417 S 0.000 0. 000 0.046 0.000 0.139 0.139 0.000 0.000 0. 000 0.325 SSW 0.000 0.000 0.000 0.000 0.093 0.139 0.093 0.000 0.000 0.325 SW 0.000 0. 000 0.046 0.046 0. 000 0.093 0.000 0.000 0.000 0.185 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 0.093 0.000 0.000 0.000 0.093 NNW 0.000 0. 000 0.000 0.046 0.046 0.000 0.093 0.000 0.000 0.185 SUBTOTAL 0.000 0.093 0.325 0.695 1.066 2.457 3.060 0.556 0.000 8.252 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS F 180 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 178 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 11.12 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-120

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

Browns Ferry Nuclear Plant JUL 1, 2002 - SEP 30, 2002 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 0.046 0.046 0.000 0.093 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.093 NE 0.000 0.000 0.000 0.000 0.000 0. 000 0.139 0. 000 0.000 0.139 ENE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 E 0. 000 0.000 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.185 ESE 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0. 000 0.000 0.046 SSE 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0. 000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.000 0.000 WSW 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 W 0.000 0.000 0. 000 0.000 0.000 0.000 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 0.046 0.000 0.046 SUBTOTAL 0.000 0. 000 0.046 0.000 0.000 0.232 0.232 0.139 0.000 0.649 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2189 TOTAL HOURS OF STABILITY CLASS G 15 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2157 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2002/12/03 MEAN WIND SPEED = 13.66 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 21

RADIOLOGICAL IMPACT ASSESSMENT BROWNS FERRY NUCLEAR PLANT JANUARY - DECEMBER 2002 TABLE 25 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FOURTH QUARTER E2-1 22

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 WIND WIND SPEED(MPH)

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 DIRECTION

0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 N

0.000 0.000 0. 000 0. 000 0.000 0.000 0.000 0.000 0.000 NNE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 NE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE

0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E

0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE

0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 S
0. 000 0.000 0.000 0.000 0.000 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. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW
0. 000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 W

WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000

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 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 0

TOTAL HOURS CALM METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-123

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0. 000 0.000 0.000 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2 176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 24

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 NE 0.000 0. 000 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 ENE 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0. 000 0. 000 0.000 0.000 0. 000 ESE 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 0.000 0. 000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 S 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 SSW 0 .000 0.000 0.000 0.046 0. 000 0.000 0. 000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000 WSW 0.000 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0. 000 0.000 0.000 0.000 0. 000 0.000 0. 000 0.046 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 0.000 0.000 0.000 0.000 0. 000 NNW 0.000 0.000 0.000 0. 000 0.046 0.000 0. 000 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.046 0.000 0.138 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS C 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 3 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 11.13 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-125

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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

0. 000 0.000 0.046 0.276 0.597 2.022 1.471 0.414 0.000 4 .825 N

NNE 0.000 0.000 0.138 0.506 0.551 1. 654 0.827 0.046 0.000 3.722 NE 0. 000 0.046 0.046 0.276 0.643 0.827 0.368 0.000 0.092 2.298 ENE 0.000 0.000 0.138 0.046 0.138 0.368 0.092 0.092 0.000 0.873 E 0. 000 0.000 0.000 0.368 0.276 0.643 0.138 0.046 0. 000 1.471 ESE 0. 000 0.000 0.046 0.276 0.689 1.425 0.551 0.046 0.092 3.125 SE 0.000 0.000 0.230 0.230 0.506 1.103 1.563 1.149 0.689 5.469 SSE 0. 000 0.000 0.414 0.551 0.597 1.241 1.379 0.827 0.460 5.469

0. 000 0.000 0.230 0.368 0.092 1. O11 1.379 0.551 0.276 3.906 S

SSW 0.000 0.000 0.230 0.092 0.092 0.597 0.460 0.276 0.368 2.114 SW 0.000 0.000 0.184 0.873 0.184 0.551 0.643 0.046 0. 000 2.482 WSW 0. 000 0.000 0.276 0.368 0.230 0.276 0. 919 0.230 0. 000 2.298 W 0. 000 0.000 0.138 0.551 0.368 1.057 0.873 0.735 0.138 3.860 WNW 0. 000 0.000 0.276 0.414 0.322 1.700 1.057 1.011 0. 138 4.917 NW 0.000 0.046 0.322 0.551 0.643 1.149 1.700 0.827 0.092 5.331 NNW 0.000 0.046 0.184 0.506 0.368 2.390 2.619 1.057 0. 000 7.169 SUBTOTAL 0.000 0.138 2.895 6.250 6.296 18.015 16. 039 7.353 2.344 59. 329 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS D 1296 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1291 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 12.12 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-126

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.276 0.138 1.057 0.965 0.046 0.000 2.528 NNE 0.000 0.092 0.092 0.184 0.184 1.149 0.965 0.046 0.046 2.757 NE 0.000 0.046 0.046 0.138 0.046 0.873 0.322 0.138 0.046 1.654 ENE 0.000 0.046 0.184 0.046 0.230 0.322 0.138 0.000 0.046 1. O11 E 0.000 0.046 0.046 0.046 0.184 0.506 0.230 0.046 0.000 1. 103 ESE 0.000 0.000 0.138 0.138 0.138 0.827 0.368 0.138 0.046 1.792 SE 0.000 0.000 0.322 0.138 0.230 1. 195 0.368 0.781 0.781 3.814 SSE 0.000 0.092 0.322 0.092 0.368 1.195 1.057 0. 919 0.735 4.779 S 0.000 0.092 0.230 0.322 0.460 0.597 1.746 0.919 0.184 4.550 SSW 0.000 0.046 0.138 0.092 0.4 60 0.827 0.414 0.046 0.138 2.160 SW 0.000 0.092 0.276 0.276 0.276 0.643 0.414 0.046 0.000 2.022 WSW 0.000 0.000 0.046 0.046 0.276 0.551 0.551 0.046 0.000 1.517 W 0.000 0.046 0.046 0.184 0.138 0.230 0.230 0.092 0.000 0.965 WNW 0.000 0.046 0.138 0.276 0.138 0.138 0.000 0.046 0. 000 0.781 NW 0.000 0.046 0.092 0.230 0.092 0.368 0.276 0. 000 0. 000 1. 103 NNW 0.000 0.000 0.092 0.092 0.138 0.506 0.735 0.092 0.000 1.654 SUBTOTAL 0.000 0.689 2.252 2.574 3.493 10.983 8.778 3.401 2.022 34.191 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS E 749 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 744 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 12.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-127

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.184 0.092 0. 000 0.000 0.276 NNE 0.000 0.000 0.000 0.092 0.000 0.276 0.276 0.092 0.000 0.735 NE 0.000 0.000 0.046 0.046 0.046 0. 000 0.138 0.046 0.000 0.322 ENE 0.000 0.000 0.092 0.000 0.046 0.092 0.092 0. 000 0. 000 0.322 E 0.000 0.000 0.092 0.000 0. 000 0. 000 0.000 0. 000 0.000 0.092 ESE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0. 000 0.000 0.046 SE 0.000 0.000 0.000 0.046 0.092 0.368 0.000 0.046 0.000 0.551 SSE 0.000 0.000 0.000 0.046 0.138 0.322 0.046 0. 000 0.000 0.551 S 0.000 0.000 0.000 0.000 0.230 0.092 0.138 0. 000 0.000 0.460 SSW 0.000 0.000 0.138 0.092 0.184 0.138 0.092 0. 000 0.000 0.643 SW 0.000 0.000 0.138 0.092 0.138 0.322 0.000 0. 000 0.000 0.689 WSW 0.000 0.000 0.046 0.046 0.184 0.184 0.000 0.000 0.000 0.460 W 0.000 0.000 0.000 0.000 0.046 0.138 0.000 0.000 0.000 0.184 WNW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0. 000 0.000 0.046 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 0.322 0.000 0.000 0.322 SUBTOTAL 0.000 0.000 0.597 0.506 1.149 2.114 1.195 0.184 0.000 5.744 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS F 125 TOTAL HOURS OF VALID WINtD DIRECTION-WIND SPEED-STABILITY CLASS F 125 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 9.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-128

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

Browns Ferry Nuclear Plant OCT 1, 2002 - DEC 31, 2002 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 0.138 0.000 0.000 0.138 NNE 0. 000 0.000 0.000 0.000 0.000 0.000 0. 000 0.000 0.000 0.000 NE 0. 000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 ENE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 E 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SSW 0. 000 0.000 0. 000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.000 0.092 0.000 0. 000 0.000 0.000 0.092 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 0.046 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 0.000 0.000 0. 000 0.000 0.000 0. 000 0.000 SUBTOTAL 0.000 0.000 0.092 0.046 0.138 0.092 0.184 0.046 0. 000 0.597 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2186 TOTAL HOURS OF STABILITY CLASS G 13 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 13 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2176 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: Browns Ferry Nuclear Plant STABILITY BASED ON DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL DATE PRINTED: 2003/02/07 MEAN WIND SPEED = 9.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-129

ENCLOSURE 3 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1, 2, AND 3 EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT JANUARY THROUGH DECEMBER 2002 E3-1

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 Regulatory and BFN ODCM Limits A. Fission and Activation Gases in Gaseous Effluent:

The release of fission and activation gases is regulated by the dose limits of 10 CFR 50 Appendix I and BFN Offsite Dose Calculation Manual (ODCM). The air dose to areas at and beyond the site boundary due to noble gases released in gaseous effluents per unit, shall be limited during any calendar quarter to < 5 nillirad (mrad) for gamma radiation and < 10 mrad for beta radiation; and during any calendar year to < 10 mrad for gamma radiation and < 20 mrad for beta radiation.

B. Iodines and Particulates with Half-Lives Greater than Eight Days in Gaseous Effluents.

The release of iodines and particulates in gaseous effluent is regulated by the dose limits of 10 CFR 50 Appendix I and the BFN ODCM. The dose to a member of the public from radioiodines, radioactive materials in particulate form, and radionuclides other than noble gases with half-lives greater than eight days in gaseous effluent released per unit to areas at and beyond the site boundary shall be limited to any organ during any calendar quarter to < 7.5 millirem (mrem), and during any calendar year to < 15 mrem.

C. Liquid Effluents The release of radioactive liquid effluents is regulated by the dose limits of 10 CFR 50, Appendix I, and the BFN ODCM. The doses or dose commitment to a member of the public from radioactive materials in liquid effluents released from each unit to unrestricted areas shall be limited during any calendar quarter to < 1.5 mrem to the total body and <5 mrem to any organ and during any calendar year to < 3 mrem to the total body and < 10 mrem to any organ.

II. Limitation on Dose Rate A. Fission and Activation Gases in Gaseous Effluent:

1. The instantaneous release rate of fission and activation gases is based on the dose rate limits of 10 CFR 20.1301 and the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary due to noble gases released in gaseous effluents from the site shall be limited to

< 500 mrem per year to the total body and < 3000 mrem per year to the skin.

2. The BFN ODCM Section 7.2 determines the maximum noble gas release rate.

E3-2

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 II. Limitations on Dose Rate (Continued)

B. lodines and Particulates with Half-Lives Greater than Eight Days in gaseous effluents.

1. The instantaneous release rate of particulates and iodines is regulated by the dose rate limits of the BFN ODCM. The dose rate at any time to areas at and beyond the site boundary, due to 1-131, 1-133, H-3 and particulates with greater than eight days half-lives released in gaseous effluents from the site, shall be limited to < 1500 mrem per year to any organ.
2. The BFN ODCM Section 7.3 determines the maximum particulate and iodine dose rates.

C. Liquid Effluents

1. The concentration of radionuclides in liquid effluents released at any time from the site to unrestricted areas shall be limited to the concentrations specified in 10 CFR 20.1001 -

20.2402, Appendix B, Table 2, Column 2 for radionuclides other than dissolved or entrained noble gases.

2. For dissolved or entrained noble gases, the concentration shall be limited to 2E-4 pCi per milliliter (ml) total activity.
m. Measurements and Approximations of Total Radioactivity A. Fission and Activation Gases:
1. Noble gases in the building vent and stack (elevated) gaseous effluents are continuously monitored. The flow rate of the stack is continuously monitored and the building vent effluent flow rates are calculated once a shift based on the configuration of operating exhaust fans. The vent flow is calculated for each release. Gas grab samples of the stack are taken and analyzed weekly. Gas grab samples of in-service vents are taken and analyzed monthly. The specific noble gas activity concentrations and total volume of the gases are used to calculate the total curies of noble gases released.
2. The tritium concentration is determined by the analysis of a monthly grab sample for each release point.

E3-3

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 mII. Measurements and Approximations of Total Radioactivity (continued)

B. Iodines and Particulates I. lodines and particulates are continuously sampled on impregnated charcoal filters and particulate filters, respectively. The charcoal and particulate samples are replaced at least weekly and analyzed to determine specific activity concentrations. The specific activity concentrations and vent flow rate data are used weekly to verify that release rate limits were not exceeded. The specific activity concentrations and total volume of gaseous effluent are used on a monthly basis to determine the total curies of each particulate and iodine released during the month.

2. The gross alpha concentration is determined by analysis of a monthly particulate filter composite sample and strontium -89 and -90 are determined by analysis of a quarterly particulate filter composite sample for each release point.

C. Liquid Effluents

1. The gamma ray emitting radionuclide concentrations are determined for each batch by gamma ray spectroscopy analysis of a grab sample. The allowable release rate is calculated for each batch based upon the known dilution flow. The flow rate of the liquid effluent is continuously monitored and the total volume released in each batch is determined. The total gamma activity released in each batch is determined by multiplying the radionuclide concentrations by the total volume discharged. The total gamma activity released during the month is then determined by summing the gamma activity content of each batch discharged during the month.
2. The gross alpha and tritium concentrations are measured on a monthly composite sample.

The strontium -89 and -90 and iron -55 are measured on a quarterly composite sample.

D. The Radioactive Gaseous and Liquid Waste Monitoring Sampling and Analysis Program is specified in ODCM Sections 1/2.2.1 and 1/2.2.2.

E3-4

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT SUPPLEMENTAL INFORMATION 2002 IV. Batch Quarter Quarter Quarter Quarter A. Liquid Units 1 2 3 4

1. Number of batches released Each 0 0 0 0
2. Total time for batches released Minutes 0 0 0 0
3. Maximum time period for a batch release Minutes 0 0 0 0
4. Average time period for a batch release Minutes 0 0 0 0
5. Minimum time period for a batch release Minutes 0 0 0 0
6. Average stream flow during period of release into a flowing stream Cubic feet per second 0 0 0 0 B. Gaseous None C. Abnormal/Unplanned Releases*

Type Number of Total Activity Releases Releases (Curies)

Liquid None None Gaseous None None

  • An explanation of any liquid or gaseous abnorrnal/unexplained release shall be documented in the summary.

E3-5

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID EFFLUENTS - SUMMATION OF ALL RELEASES YEAR 2002 Units Quarter Quarter Quarter Quarter Error A. Fission and Activation Products I 2 3 4  %

(Does not include tritium, gases, Alpha)

1. Total Release Curies NR* NR NR NR 9
2. Average Diluted Concentration Released During Period liCi/ml NR NR NR NR
3. Percent of Applicable Limit B. Tritium
1. Total Releases Curies NR NR NR NR 6
2. Average Diluted Concentration Released During Period ,uCi/ml NR NR NR NR
3. Percent of Applicable Limit C. Dissolved and Entrained Noble Gases
1. Total Releases Curies NR NR NR NR 8
2. Average Diluted Concentration Released During Period ~tCi/ml NR NR NR NR
3. Percent of Applicable Limit D. Gross Alpha Radioactivity
1. Total Releases Curies NR NR NR NR 48
2. Average Diluted Concentration Released During Period [+/-Ci/ml NR NR NR NR E. Volume of Liquid Waste to Discharge Canal (Prior to dilution) Liters NR NR NR NR 3 F. Volume of Dilution Water for Period Liters NR NR NR NR 10 G. Total CCW giligagallons NR NR NR NR
  • NR - No liquid releases were made in the Ist 2nd 3rd and 4h quarters.
    • The applicable limit is expressed in terms of dose. See Enclosure 1, Tables 5 through 8.

E3-6

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT LIQUID RELEASES FOR YEAR 2002 - BATCH MODE CURIES Isotope Ouarter Ouarter Quarter Quarter (Required by Regulatory 1 2 3 4 (REG) Guide 1.21)

1. Ba-140 NR* NR NR NR
2. Ce-141 NR NR NR NR
3. Co-58 NR NR NR NR
4. Co-60 NR NR NR NR
5. Cr-51 NR NR NR NR
6. Cs-134 NR NR NR NR
7. Cs-137 NR NR NR NR
8. Fe-59 NR NR NR NR
9. I-131 NR NR NR NR
10. La-140 NR NR NR NR
11. Mn-54 NR NR NR NR
12. Mo-99 NR NR NR NR
13. Nb-95 NR NR NR NR
14. Sr-89 NR NR NR NR
15. Sr-90 NR NR NR NR
16. Tc-99m NR NR NR NR
17. Xe-133 NR NR NR NR
18. Xe-135 NR NR NR NR
19. Zn-65 NR NR NR NR
20. Zr-95 NR NR NR NR Others (Not Required by REG Guide 1.21)

NONE

  • NR -- No liquid releases were made during the 1st 2nd 3rd and 4th quarters E3-7

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT GASEOUS EFFLUENTS - SUMMATION OF ALL RELEASES YEAR 2002 Units Quarter Quarter Quarter Quarter Error 1 2 3 4 A. Fission and Activation Gases

1. Total Releases Curies 1.59E+01 6.13E+01 1.20E+03 1.63E+03 45
2. Average Release Rate for Period [iCi/sec 2.05E+00 7.79E+00 1.51 E+02 2.05E+02
3. Percent of Applicable Limit B. Iodines
1. Total Iodine-131 Curies 4.03E-03 8.73E-02 4.588E-03 1.80E-01 36
2. Average Release Rate for Period tCi/sec 5.18E-04 1.1 E-02 5.77E-04 2.26E-02
3. Percent of Applicable Limit C. Particulates
1. Particulates with half-lives

> eight days Curies 1.15E-03 1.13E-03 1.41E-03 2.42E-03 35

2. Average Release Rate for Period utCi/sec 1.48E-04 1.44E-04 1.78E-04 3.05E-04
3. Percent of Applicable Limit
4. Gross Alpha Radioactivity Curies ND** ND ND ND D. Tritium
1. Total Release Curies 3.1 OE+0 I 1.32E+01 1.06E+01 6.38E+01 21
2. Average Release Rate for Period Ci/sec 3.99E+00 1.67E+00 1.34E+00 8.02E+00
3. Percent of Applicable Limit
  • Applicable Limits are expressed in terms of dose. See Enclosure 1, Tables 1 through 4.
    • ND - Not Detected.

E3-8

EFFLUENT AN D WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - ELEVATED RELEASE CURIES Quarter Quarter Quarter Quarter 1 2 3 4

1. Fission Gases Kr-85m 1.59E+01 2.59E+00 1.09E+02 2.03E+02 Kr-85 ND* ND ND ND Kr-87 ND ND ND ND Kr-88 ND ND 4.51E+01 8.82E+01 Xe-133 ND 5.87E+01 1.04E+03 1.33E+03 Xe-135m ND ND ND ND Xe-135 ND ND 3.65E+00 3.63E+00 Xe-138 ND ND ND ND Others (specify)

N-13 ND ND 7.72 E+00 ND Total for Period 1.59E+01 6 12E+01 1.20E+03 I 63E+03

2. Iodines 1-131 2.44E-04 4.03E-03 5.3 1E-04 5.42E-03 1-133 2.111E-04 4.26E-04 2.61E-04 8.88E-04 Total for Period 4.55E-04 4 46E-03 7.92E-04 6.3 1E-03
  • ND - Not Detected.

E3-9

EFFLUENT AND WASTE DISPOSAL ANNUAL REPOR1 YEAR 2002 GASEOUS EFFLUENTS - ELEVATED RELEASE CURIES Quarter Quarter Quarter Quarter 1 2 3 4

3. Particulates*

Sr-89 9.95E-05 4.96E-05 8.66E-05 1.I 9E-04 Sr-90 ND** ND ND ND Cs-134 ND 2.51E-06 ND ND Cs-137 ND 2.05E-06 ND ND Ba-140 9.211E-05 4.58E-05 5.13E-05 7.60E-05 La-140 4.29E-05 1.62E-05 1.84E-05 2.32E-05 Others (specify)

Rb-88 ND ND ND 1.32E-01 Rb-89 1.061E-01 2.21E-02 1.62E-01 3.25E-02 Sr-91 2.3 SE-04 3.18E-04 6.21E-05 3.65E-04 Y-91m 6.81E-04 5.02E-04 4.16E-04 5.98E-04 Cs-138 2.35E-01 7.66E-02 2.74E-01 9.60E-01 Ba-139 9.52E-02 5.60E-02 8.56E-02 1.21E-01 Au-199 2.16E-05 ND ND ND Total for Period* 4 37E-01 1.56E-01 5.23E-01 I 25E+00

4. Tritium 7.27E-01 9.62E-01 1.60E+00 I 84E+00
  • Includes all nuclides, even those with less than an eight day half-life.
    • ND - Not Detected.

E3-10

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - GROUND RELEASE CURIES Quarter Quarter Quarter Quarter 1 2 3 4

1. Fission Gases Kr-85m ND* ND ND ND Kr-85 ND ND ND ND Kr-87 ND ND ND ND Kr-88 ND ND ND ND Xe-133 ND ND ND ND Xe-135m ND ND ND ND Xe-135 ND ND ND ND Xe-138 ND ND ND ND Others(specify)

NONE Total for Period ND ND ND ND

2. lodines 1-131 1.88E-03 2.12E-03 1.O1E-03 9.45E-03 1-132 ND ND ND 2.74E-04 1-133 4.20E-03 9.1 OE-04 1.03E-03 7.111E-03 1-135 ND ND ND 3.48E-04 Total for Period 6.08E-03 3.03E-03 2.04E-03 1.72E-02
  • ND - Not Detected.

E3-11

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - GROUND RELEASE CURIES Quarter Quarter Quarter Quarter

3. Particulates* 1 2 3 4 Sr-89 4.13E-05 1.45E-07 1.63E-05 1.15E-04 Sr-90 ND** ND ND ND Cs-134 ND ND ND ND Cs-137 ND ND ND ND Ba-140 6.54E-05 ND ND 2.47E-05 La-140 1.24E-05 ND ND ND Others (specify)

Cr-51 ND 4.02E-05 ND ND Mn-54 1.22E-06 1.55E-05 ND ND Co-60 ND 1.69E-05 ND ND Sr-91 1.311E-04 ND ND ND Y-91m 1.42E-03 6.71E-06 6.1lE-05 7.11E-04 Cs-138 3.16E-02 1.39E-02 5.60E-02 3.68E-01 Ba-139 2.71E-02 7.18E-04 8.67E-03 3.98E-02 Total for Period* 6.04E-02 1.47E-02 6.47E-02 4.08E-01

4. Tritium 6.04E+00 2.03E+00 2 31E+00 4.14E+00
  • Include all nuclides even those with less than an eight day half-life.
    • ND - Not Detected.

E3-12

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - MIXED MODE RELEASE*

CURIES Quarter Quarter Quarter Quarter 1 2 3 4

1. Fission Gases Kr-85m ND** ND ND ND Kr-85 ND ND ND ND Kr-87 ND ND ND ND Kr-88 ND ND ND ND Xe-133 ND ND ND 3.86E-02 Xe-135m ND ND ND ND Xe-135 ND ND ND 8.13E-03 Xe-138 ND ND ND ND Others(specify)

NONE Total for Period ND ND ND 4.68E-02

2. lodines I-131 1.91E-03 8.12E-02 3.04E-03 1.65E-01 I-133 4.29E-03 4.33E-03 4.53E-03 4.65E-02 I-135 1.02E-04 ND ND ND Total for Period 6 30E-03 8 55E-02 7.57E-03 2.111E-01
  • The Reactor Building and Radwaste Building are treated as split-level releases.
    • ND - Not Detected E3-13

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - MIXED MODE RELEASE*

CURIES Quarter Quarter Quarter Quarter 1 2 3 4

3. Particulates**

Sr-89 7.82E-05 3.35E-05 3.29E-05 8.82E-05 Sr-90 ND*** ND ND ND Cs-134 ND 1.12E-04 2.21E-04 4.60E-04 Cs-137 4.13E-06 1.70E-04 4.90E-04 7.90E-04 Ba-140 3.1 lE-04 7.85E-05 8.97E-05 2.54E-04 La-140 2.16E-04 1.14E-05 4.97E-05 7.87E-05 Others (specify)

Na-24 2.06E-04 2.36E-03 2.89E-03 1.34E-03 Cr-51 2.08E-04 1.52E-04 ND ND Mn-54 6.68E-05 1.21E-04 1.18E-04 1.05E-04 Co-58 1.18E-05 4.15E-05 6.76E-05 2.53E-05 Fe-59 1.48E-05 2.65E-06 ND ND Co-60 9.OOE-05 1.89E-04 1.12E-04 1.23E-04 Zn-65 ND 3.36E-05 5.40E-05 1.06E-04 Y-9lm 2.93E-03 1.17E-03 2.50E-03 3.06E-03 Sr-91 2.96E-03 ND 2.53E-04 2.01E-03 Sr -92 2.47E-04 ND ND ND

  • The Reactor Building and Radwaste Building are treated as split-level releases.
    • Includes all nuclides, even those with less than an eight day half-life.
      • ND - Not Detected.

E3-14

EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT YEAR 2002 GASEOUS EFFLUENTS - MIXED MODE RELEASE*

CURIES Quarter Quarter Ouarter Quarter Particulates** (Continued) I 2 3 4 Others (specify)

Mo-99 5.53E-06 ND*** 2.96E-05 3.01E-05 Tc-99m 5.40E-06 ND 2.89E-05 2.94E-05 Ag-1Orm 3.86E-05 2.OOE-05 6.73E-05 1.33E-04 Cs-138 5.20E-03 ND ND 2.26E-02 Ba-139 6.63E-02 2.50E-02 5.19E-03 8.51E-02 Au-I99 ND 1.54E-06 ND ND Total for Period** 7.90E-02 2.95E-02 1.22E-02 1.1 6E-01

4. Tritium 2.42E+01 1.02E+01 6.70E+00 5.78E+01
  • The Reactor Building and Radwaste Building are treated as split-level releases.
    • Includes all nuclides, even those with less than an eight day half-life.
      • ND - Not Detected.

E3-15

BROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT 2002 SOLID WASTE AND IRRADIATED FUEL A. Solid Waste Shipped Off-site for Burial or Disposal (Not Irradiated Fuel)

1. Type of Waste Units Amount Error %
a. Spent resins, filter sludge m3 0.00E+00 evaporator bottoms, etc. ci 0.00E+00
b. Dry compressible waste, contaminated m3 1.71 E+02 equipment, etc. Ci 6.47E+01 +/-25.0
c. Irradiated components, control rod m3 0.OOE+00 drives ci 0.OOE+00
d. Cartridge filters m3 0.OOE+00 Ci 0.OOE+00
2. Estimate of Major Nuclide Composition by Waste Type
a. Dry compressible waste, contaminated equipment, etc.

Nuclide Percentage Activity (Curies)

1. Iron 55 (1) 7.62E+01 4.98E+01
2. Cobalt 60 (1) 9.54E+00 6.17E+01
3. Manganese5 4 (1) 7.1 OE+00 4.60E+00
4. Silver 11 0 m (1) 2.06E+00 1.34E+00
5. Cesium 1 37 (1) 1.24E+00 8.05E-01
6. Chromium 51 (1) 9.76E-01 6.32E-01
7. Iron59 (1) 8.85E-01 7.73E-01 Zinc 6 5 (1) 7.45E-01 4.82E-01 8.
9. Cesium 1 34 (1) 3.91 E-01 2.53E-01
10. Cobalt58 (1) 3.27E-01 2.12E-01
11. Nickel 6 3 (1) 1.96E-01 1.27E-01
12. Antimony 12 4 (1) 1.19E-01 7.72E-02
13. Antimony125 (1) 8.95E-02 5.79E-02
14. Zirconium 95 (1) 6.96E-02 4.51 E-02
15. Cerium 14 4 (1) 3.98E-02 2.57E-02
16. Strontium 89 (1) 1.99E-02 1.29E-02
17. Tin 113 (1) 9.95E-03 6.44E-03
18. Strontium 90 (1) 3.71 E-05 2.40E-05
19. Curium 2 4 3 / 2 4 4 (1) 3.09E-06 2.OOE-06 (1) Calculated E3-16

BROWNS FERRY NUCLEAR PLANT ANNUAL EFFLUENT AND WASTE DISPOSAL REPORT 2002 SOLID WASTE AND IRRADIATED FUEL

3. Solid Waste Disposition Number of Shipments Mode of Transportation Destination 1 (1) Non Sole Use Truck US Ecology Oak Ridge, TN 42 (24) Sole Use Truck Duratek (18) Non Sole Use Truck Oak Ridge, TN 1 (1) Non Sole Use Truck Tennessee Valley Authority Mixed Waste Storage Facility Muscle Shoals, AL B. Irradiated Fuel Disposition Number of Shipments Mode of Transportation Destination None N/A N/A C. Description of Shipments Number of Type Type Number of Container Waste Shipments Container Quantity Containers Volume Type 44 Strong Tight A-LSA II 52 See Note DAW Package LTD QTY Solidification Agents Used: None Absorbents Used: None NOTE: The 44 shipments of waste packaged in strong tight packages consisted of the following:

Type of STC Number of Packages Volume of Packages (i 3 )

40' "Sealand" 30 2.31 E+03 20'"Sealand" 21 7.64E+02 55 Gal drum 1 2.12E-01 E3-17

BROWNS FERRY NUCLEAR PLANT EFFLUENT AND WASTE DISPOSAL ANNUAL REPORT

SUMMARY

OF ABNORMAL/UNPLANNED RELEASES 2002 The release of radioactive material to the environment from Browns Ferry has been a small fraction of the 10 CFR 20 Appendix B and 10 CFR 50 Appendix I limits. There were no limits exceeded as specified in 10 CFR2OAppendixB and 10 CFR5OAppendixI.

No abnormal gaseous or liquid releases occurred in 2002.

During the reporting period, January I through December 31, 2002, there was no missed compensatory measures.

In calendar year 2002 Browns Ferry had no changes to the radwaste system or the Process Control Program (PCP).

E3-18

ENCLOSURE 4 TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS 1, 2, AND 3 INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT JANUARY THROUGH DECEMBER 2002 E4-1

INOPERABLE RADIOLOGICAL EFFLUENT INSTRUMENTATION REPORT 2002 This report is to comply with Browns Ferry Nuclear Plant Offsite Dose Calculation Manual (Offsite Dose Calculation Manual (ODCM)) Sections 1/2.1.1 and 1/2.1.2. The ODCM requires the exertion of best efforts to return inoperable instruments to operable status within 30 days. Failure to return such instruments to an operable status within the prescribed interval requires a description in the Annual Radioactive Effluent Release Report.

During the reporting period, January I through December 31, 2002, there were no radioactive gaseous effluent monitoring instrumentation out of service for greater than 30 days; however, one liquid effluent monitor was out of service for greater than 30 days. The Unit I RHR service water monitor (1-RM-90-134) was considered inoperable between the times of December 08, 2001, at 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> through January 7, 2002 at 1207 hours0.014 days <br />0.335 hours <br />0.002 weeks <br />4.592635e-4 months <br />. The monitor had tripped due to low flow conditions. Work Orders were initiated in a timely manner and work packages were planned for implementation based on a priority status of not exceeding 21 days. Initial troubleshooting of the flow problem was completed on 12-29-2001 and had resolved the flow problem. However, during post maintenance testing activities, it was determined that a wiring error existed with a hand-switch in the pump start logic. A second work order was prepared to troubleshoot the wiring problem and was successfully completed on 01-07-2003. The monitor was then returned to service having exceeded 30 days by a few hours.

Some effluent monitors and flow instrumentation were placed in "out-of-service" status because these monitors' effluent streams were isolated. Therefore, these monitors are not included in this report.

E4-2

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