Text

Annual Radioactive Effluent Release Report - 2011
	ML12123A017
Person / Time
Site:	Browns Ferry
Issue date:	04/30/2012
From:	James Shea; Tennessee Valley Authority
To:	; Document Control Desk, Office of Nuclear Reactor Regulation
References
	Download: ML12123A017 (166)
	v • d • e

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 April 30, 2012 10 CFR 50.4 10 CFR 50.36a ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Browns Ferry Nuclear Plant, Unit 1, 2, and 3 Facility Operating License Nos. DPR-33, DPR-52, and DPR-68 NRC Docket Nos. 50-259, 50-260, and 50-296

Subject:

Annual Radioactive Effluent Release Report - 2011 In accordance with the Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3, Technical Specification Section 5.6.3, the Tennessee Valley Authority (TVA) is submitting documents that collectively comprise the BFN Annual Radioactive Effluent Release Report for the period January through December 2011. This documentation is in conformance with 10 CFR 50.36a and 10 CFR Part 50, Appendix I Section IV.B.1. 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 Inoperable Radiological Effluent Instrumentation Report.

Enclosure 1 provides the Radiological Impact Assessment Report. Enclosure 2 provides the Meteorological Data Tables. Enclosure 3 is the Effluent and Waste Disposal Annual Report, and Enclosure 4 is the Inoperable Radiological Effluent Instrumentation Report. Enclosure 5 provides the ODCM, Revision 21.

Printed on recycled paper

U.S. Nuclear Regulatory Commission Page 2 April 30, 2012 There are no regulatory commitments contained within this letter. If you have any questions concerning this submittal, please contact Tom Hess, at (423) 751-3487.

Respec ly, W. S ea w

a:nyr, Corporate Nuclear Licensing

Enclosures:

1. 2011 Radiological Impact Assessment

2. 2011 Meteorological Data Tables

3. 2011 Effluent and Waste Disposal Annual Report

4. 2011 Inoperable Radiological Effluent Instrumentation Report

5. Offsite Dose Calculation Manual, Revision 21 cc: (w/Enclosure):

NRC Regional Administrator - Region II NRC Senior Resident Inspector - Browns Ferry Nuclear Plant

Enclosure 1 Browns Ferry Nuclear Plant Units 1, 2, and 3 2011 Radiological Impact Assessment Report (See Attached)

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V 2011 Radiological Impact Assessment Report I. INTRODUCTION Potential doses to the "maximum exposed individual" and the population around Browns Ferry Nuclear Plant (BFN) are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). The methodology used to estimate dose for determining plant releases for the reporting period 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 BFN.

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 mrad 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.

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2011 Radiological Impact Assessment Report The Environmental Protection Agency 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.

III. DOSE CALCULATIONS Estimated doses to members of the public are determined using computer models (the Gaseous Effluent Licensing Code, and the Quarterly Water Dose Assessment Code (QWATA)). These models are based on guidance provided by the Nuclear Regulatory Commission (NRC) 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. 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, and 7.

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 animals.

Airborne Release Points There are four monitored release points from BFN: 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 wind speeds and directions measured 10.5 meters above the ground and from the vertical temperature difference between 10.03 and 45.30 meters, and are presented for each quarter in Enclosure 2, 2011 Meteorological Data Tables, Tables 1, 2, 3, and 4.

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 two 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 E1-3

2011 Radiological Impact Assessment Report speeds and directions measured 10.5 meters above ground-level and from the vertical temperature difference between 10.03 and 45.30 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 45.74 meter level and the vertical temperature difference between 10.03 and 89.59 meters. Both of these JFDs are given for each quarter in Enclosure 2, 2011 Meteorological Data Tables, Tables 5, 6, 7, and 8.

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 90.29 meters and the vertical temperature difference between 10.03 and 89.59 meters, and are given for each quarter in Enclosure 2,2011 Meteorological Data Tables, Tables 9, 10, 11, and 12.

Meteorological Data Meteorological variables at BFN are measured continuously. Measurements collected include wind speed and wind direction at heights of 10.5, 45.74, and 90.29 meters above the ground, and temperature at heights of 10.03, 45.30, and 89.59 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.

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2011 Radiological Impact Assessment Report 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 cow/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.

However, for the ingestion dose, only those pathways that exist for each receptor are considered in the sum, e.g., 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, and 4.

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 is 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 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.

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 E1-5

2011 Radiological Impact Assessment Report 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 (WMEL)]. This could be interpreted as indicating that the maximum exposed individual, as assumed for liquid releases from BFN, 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 0.139 hours 8.267196e-4 weeks 1.9025e-4 months 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 and 6 along with the average river flows past the plant site for the periods. For the third and fourth quarter of 2011, there were no river releases.

VI. POPULATION DOSES Population doses due to airborne effluents are calculated for an estimated 778,266 people 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, and 6.

VII. OFFSITE DIRECT RADIATION DOSE External gamma radiation levels were measured by environmental dosimeters deployed around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP). The quarterly gamma radiation levels determined from these dosimeters during this reporting period averaged approximately 19.3 mrem/quarter at onsite (at or near the site boundary) stations and approximately 16.8 mrem/quarter at offsite stations or approximately 2.5 mrem/quarter higher onsite than at offsite stations.

This difference is consistent with levels measured for pre-operation and construction phases of the Tennessee Valley Authority nuclear plants where the average radiation levels onsite were generally 2-6 mrem/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 dosimeter 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.

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2011 Radiological Impact Assessment Report VIII. DOSE TO A MEMBER OF THE PUBLIC INSIDE THE SITE BOUNDARY Pursuant to ODCM Section 7.7.5, a review was performed ýto determine the highest dose to a member of the public in the site boundary. 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 gaseous effluent dose commitment is negligible compared to the direct radiation dose.

The direct radiation dose was determined from area environmental dosimeters 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 critical location was determined to be a Thermoluminescent Dosimeter near the Livewell Center (Training Center). The direct radiation dose accounting for background and occupancy was 0.81 mrem during 2011.

The total annual dose commitment to a member of the public for 2011 is 0.81 mrem. It can be concluded that the dose limit for a member of the public at the site boundary as specified in 10 CFR 20.1301 was not exceeded.

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 the 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 CFR 190 limit for total body or any organ dose (other than the thyroid) to determine compliance.

I 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 7.

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2011 Radiological Impact Assessment Report Table 1 Doses from Airborne Effluents First Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 1.6E-08 mrad 5 mrad < 1% NNW/1650 meters Beta Air 7.1E-09 mrad 10 mrad < 1% NNW/1650 meters Submersion Total Body 3.5E-04 mrem NA NA E/1290 meters Skin 4.2E-04 mrem NA NA E/1290 meters Organ Doses Child/Bone 1.5E-02 mrem 7.5 mrem < 1% NNW/1802 meters Child/Thyroid 2.1E-02 mrem 7.5 mrem < 1% NNW/1802 meters Child/Total Body 9.3E-03 mrem 7.5 mrem < 1% NNW/1802 meters Population Doses Total Body Dose .1E-01 man-rem Maximum Organ Dose (organ) 4.8E-01 man-rem (bone)

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

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2011 Radiological Impact Assessment Report Table 2 Doses from Airborne Effluents Second Quarter*

Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 8.8E-06 mrad 5 mrad < 1% NNE/1300 meters Beta Air 3.6E-06 mrad 10 mrad <1% NNE/1300 meters Submersion Total Body 9.1E-04 mrem NA NA N/2447 meters Skin 1.1E-03 mrem NA NA N/2447 meters Organ Doses Child/Bone 1.5E-02 mrem 7.5 mrem < 1% N/4580 meters Child/Thyroid 1.OE-02 mrem 7.5 mrem <I % NNW/1802 meters Child/Total Body 4.1E-03 mrem 7.5 mrem <I % NNW/4580 meters Population Doses Total Body Dose 8.OE-02 man-rem Maximum Organ Dose (organ) 3.6E-01 man-rem (bone)

Populationdoses can be comparedto the natural backgrounddosefor the entire 50-mile population of about 70.044 man-rem/year (based on 90 mrem/yrfor naturalbackground).

Includes dose from abnormal releases.

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2011 Radiological Impact Assessment Report Table 3 Doses from Airborne Effluents Third Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 3.6E-10 mrad 5 mrad < 1% S/2250 meters Beta Air 1.IE-09 mrad 10 mrad < 1% S/2250 meters Submersion Total Body 1.3E-03 mrem NA NA E/1290 meters Skin 1.5E-03 mrem NA NA E/1290 meters Organ Doses Child/Bone 3.4E-02 mrem 7.5 mrem < 1% NNW/1802 meters Child/Thyroid 1.6E-02 mrem 7.5 mrem < 1% NNW/1802 meters Child/Total Body 9.3E-03 mrem 7.5 mrem < 1% NNW/1802 meters Population Doses Total Body Dose 1.7E-01 man-rem Maximum Organ Dose (organ) 7.6E-01 man-rem (bone)

Populationdoses can be compared to the natural background dosefor the entire 50-mile population of about 70,044 man-rein/year(based on 90 mnren/yrfor natural background).

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2011 Radiological Impact Assessment Report Table 4 Doses from Airborne Effluents Fourth Quarter Individual Doses Pathway Dose Quarterly Limit Percent of Limit Location External Gamma Air 3.6E-10 mrad 5 mrad < 1% NNW/1650 meters Beta Air 1.1E-09 mrad 10 mrad < 1% NNW/1650 meters Submersion Total Body 2.1E-04 mrem NA NA E/1290 meters Skin 2.5E-04 mrem NA NA E/1290 meters Organ Doses Child/ Bone 1.5E-02 mrem 7.5 mrem < 1% NNW/1802 meters Child/Thyroid 1.7E-02 mrem 7.5 mrem < I% NNW/1802 meters Child /Total Body 8.6E-03 mrem 7.5 mrem < 1% NNW/1802 meters Population Doses Total Body Dose 1.3E-01 man-rem Maximum Organ Dose (organ) 5.2E-01 man-rem (bone)

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

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2011 Radiological Impact Assessment Report Table 5 Doses from Liquid Effluents First Quarter*

Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Body Fish Ingestion 5.3E-04 Recreation 1.8E-04 Water Ingestion 2.OE-05 Total 7.3E-04 1.5 mrem < 1%

Child Bone Fish Ingestion 7.9E-04 Recreation 1.8E-04 Water Ingestion 8.8E-05 Total 1.1E-03 5 mrem < 1%

Child Thyroid Fish Ingestion 3.4E-06 Recreation 1.8E-04 Water Ingestion 1.7E-05 Total 2.OE-04 5 mrem < 1%

Average Riverflow past BFN (cubic feet per second): 66423 Population Doses Total Body Dose 5.4E-03 man-rem Maximum Organ Dose (organ) 8.2E-03 man-rem (liver)

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

Includes dose from abnormal releases.

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2011 Radiological Impact Assessment Report Table 6 Doses from Liquid Effluents Second Quarter Individual Doses (mrem)

Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Body Fish Ingestion 2.OE-04 Recreation 3.1E-05 Water Ingestion 2.4E-05 Total 2.6E-04 1.5 mrem <1 %

Teen Liver Fish Ingestion 3.1 E-04 Recreation 3.1E-05 Water Ingestion 2.OE-05 Total 3.6E-04 5 mrem < 1%

Child Thyroid Fish Ingestion 6.4E-07 Recreation 3.1E-05 Water Ingestion 2.8E-05 Total 6.OE-05 5 mrem < 1%

Average Riverflow past BFN (cubic-feet per second): 49084 Population Doses Total Body Dose 2.6E-03 man-rem Maximum Organ Dose (organ) 3.6E-03 man-rem (liver)

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

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2011 Radiological Impact Assessment Report Table 7 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 3.5E-04 9.1E-04 1.3E-03 2.IE-04 Critical organ dose (air) 1.5E-02 1.5E-02 3.4E-02 1.5E-02 Total body dose (liquid) 7.3E-04 2.6E-04 -

Maximum organ dose (liquid) 1.1E-03 3.6E-04 - -

Direct Radiation Dose 0 0 0 0 Total 1.7E-02 1.7E-02 3.5E-02 1.5E-02 Cumulative Total Dose (mrem)

(Total body or any other organ) 8.4E-02 Annual Dose Limit (mrem) 2.5E+01 Percent of Limit < 1%

Thyroid Dose (mrem)

Total body air submersion 3.5E-04 9.1E-04 1.3E-03 2.1E-04 Thyroid dose (airborne) 2.1E-02 1.OE-02 1.6E-02 1.7E-02 Total body dose (liquid) 7.3E-04 2.6E-04 -

Thyroid dose (liquid) 2.0E-04 6.OE-05 - -

Direct Radiation Dose 0 0 0 0 Total 2.2E-03 1.1E-02 1.7E-02 1.7E-02 Cumulative Total Dose (Thyroid) mrem 4.7E-02 Annual Dose Limit (mrem) 7.5E+01 Percent of Limit < 1%

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Enclosure 2 Browns Ferry Nuclear Plant Units 1, 2, and 3 2011 Meteorological Data Tables (See Attached)

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BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 1 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 (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 18.5-24.4 224 .5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 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 0.093 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.046 0.000 0.046 0.046 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.000 0.788 0.139 0.046 0.000 0.000 0.000 0. 974 SSE 0.000 0.000 0.232 0.742 0.000 0.000 0.000 0.000 0.000 0. 974 S 0.000 0.000 0.000 0.278 0.000 0.000 0.000 0.000 0.000 0.278 SSW 0.000 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.232 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 0.093 0.000 0.000 0.000 0.093 NNW 0.000 0.000 0.000 0.000 0.000 0.046 0.232 0.000 0.000 0.278 SUBTOTAL 0.000 0.000 0.371 2.041 0.186 0.417 0.232 0.000 0.000 3.247 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS A 70 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 70 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.53 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 < AT * -1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.046 0.139 0.046 0.000 0.000 0.000 0.232 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 0.046 0.000 0.046 0.000 0.000 0.000 0.093 ENE 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 ESE 0.000 0.000 0.000 0.186 0.000 0.046 0.000 0.000 0.000 0.232 SE 0.000 0.000 0.046 0.139 0.046 0.000 0.000 0.000 '0.000 0.232 SSE 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 S 0.000 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.139 SSW 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.186 SW 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.139 WSW 0.000 0.000 0.000 0.371 0.046 0.000 0.000 0.000 0.000 0.417 W 0.000 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.186 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.186 0.325 0.000 0.000 0.510 NNW 0.000 0.000 0.000 0.000 0.046 0.325 0.046 0.000 0.000 0.417 SUBTOTAL 0.000 0.000 0.278 1.252 0.464 0.788 0.371 0.000 0.000 3.154 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS B 68 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 68 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 7.09 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 < AT * -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.046 0.046 0.093 0.000 0.000 0.000 0.186 NNE 0.000 0.000 0.000 0.000 0.093 0.186 0.000 0.000 0.000 0.278 NE 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.000 0.139 ENE 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0.093 E 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 No.000 0.093 ESE 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.139 0.046 0.000 0.093 0.000 0.000 0.000 0.278 SSE 0.000 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.232 S 0.000 0.000 0.046 0.139 0.000 0.000 0.000 0.000 0.000 0.186 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 0.093 0.139 0.046 0.000 0.000 0.000 0.000 0.278 WSW 0.000 0.000 0.000 0.093 0.139 0.046 0.000 0.000 0.000 0.278 W 0.000 0.000 0.000 0.093 0.093 0.139 0.000 0.000 0.000 0.325 WNW 0.000 0.000 0.000 0.046 0.093 0.093 0.046 0.000 0.000 0.278 NW 0.000 0.000 0.000 0.046 0.139 0.417 0.139 0.000 0.000 0.742 NNW 0.000 0.000 0.000 0.093 0.093 0.278 0.000 0.000 0.000 0.464 SUBTOTAL 0.000 0.000 0.417 0.974 0.835 1.531 0.186 0.000 0.000 3.942 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 85 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 7.00 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 < AT * -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.232 0.649 0.974 1.206 0.000 0.000 0.000 3.061 NNE 0.000 0.000 0.417 0.974 0.974 0.974 0.000 0.000 0.000 3.340 NE 0.000 0.000 0.139 1.531 1.067 0.881 0.000 0.000 0.000 3.618 ENE 0.000 0.000 0.325 1.252 0.835 0.232 0.000 0.000 0.000 2.644 E 0.000 0.046 0.371 0.603 0.325 0.046 0.000 0.000 0.000 1.391 ESE 0.000 0.000 0.232 0.974 0.139 0.371 0.000 0.000 0.000 1.716 SE 0.000 0.000 0.510 0.835 0.093 0.139 0.000 0.000 0.000 1.577 SSE 0.000 0.000 0.696 0.371 0.093 0.000 0.000 0.000 0.000 1.160 S 0.000 0.000 0.603 0.371 0.000 0.000 0.000 0.000 0.000 0. 974 SSW 0.000 0.000 0.835 0.186 0.046 0.000 0.000 0.000 0.000 1.067 SW 0.000 0.000 0.417 0.371 0.232 0.000 0.000 0.000 0.000 1.020 WSW 0.000 0.000 0.093 0.510 0.232 0.417 0.000 0.000 0.000 1.252 W 0.000 0.000 0.139 0.974 0.742 0.974 0.186 0.000 0.000 3.015 WNW 0.000 0.000 0.093 0.371 0.510 1.020 1.345 0.000 0.000 3.340 NW 0.000 0.000 0.046 0.835 0.696 3.200 1.855 0.186 0.000 6.818 NNW 0.000 0.000 0.232 0.649 1.020 3.061 0.464 0.000 0.000 5.427 SUBTOTAL 0.000 0.046 5.380 11.456 7.978 12.523 3.850 0.186 0.000 41.419 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS D 893 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 893 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 7.09 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 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.278 0.371 0.186 0.139 0.000 0.000 0.000 0.974 NNE 0.000 0.093 0.417 0.974 0.371 0.093 0.000 0.000 0.000 1.948 NE 0.000 0.046 0.325 0.742 0.325 0.278 0.000 0.000 0.000 1.716 ENE 0.000 0.000 0.371 0.371 0.093 0.000 0.000 0.000 0.000 0.835 E 0.000 0.046 0.742 0.325 0.000 0.000 0.000 0.000 0.000 1.113 ESE 0.000 0.232 1.160 0.742 0.186 0.000 0.000 0.000 0.000 2.319 SE 0.000 0.232 1.252 0.788 0.325 0.093 0.000 0.000 0.000 2.690 SSE 0.000 0.464 1.113 0.649 0.046 0.000 0.000 0.000 0.000 2.273 S 0.000 0.278 0.974 1.113 0.510 0.232 0.000 0.000 0.000 3.108 SSW 0.000 0.093 0.186 0.417 0.928 0.464 0.000 0.000 0.000 2.087 SW 0.000 0.046 0.278 0.464 0.139 0.000 0.000 0.000 0.000 0.928 WSW 0.000 0.046 0. 603 0.232 0.232 0.000 0.000 0.000 0.000 1.113 W 0.000 0.046 0.325 0.649 0.186 0.093 0.000 0.000 0.000 1.299 WNW 0.000 0.093 0.093 0.186 0.046 0.093 0.046 0.000 0.000 0.557 NW 0.000 0.000 0.139 0.232 0.046 0.510 0.000 0.000 0.000 0.928 NNW 0.000 0.000 0.278 0.186 0.464 0.232 0.046 0.000 0.000 1.206 SUBTOTAL 0.000 1.716 8.534 8.442 4.082 2.226 0.093 0.000 0.000 25.093 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS E 541 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 541 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 4.26 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 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.232 0.881 0.139 0.000 0.000 0.000 0.000 0.000 1.252 NNE 0.000 0.093 0.278 0.464 0.093 0.000 0.000 0.000 0.000 0.928 NE 0.000 0.093 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.278 ENE 0.000 0.046 0.557 0.093 0.000 0.000 0.000 0.000 0.000 0.696 E 0.000 0.046 0.742 0 .232 0.000 0.000 0.000 0.000 0.000 1.020 ESE 0.000 0.186 0.974 0.139 0.000 0.000 0.000 0.000 0.000 1.299 SE 0.000 0.232 1 .670 0.278 0.000 0.000 0.000 0.000 0.000. 2.180 SSE 0.000 0.557 1 .623 0.000 0.000 0.000 0.000 0.000 0.000 2.180 S 0.000 0.232 1.067 0.881 0.371 0.186 0.000 0.000 0.000 2.737 SSW 0.000 0.186 0.417 0.186 0.000 0.000 0.000 0.000 0.000 0.788 SW 0.000 0.000 0.278 0.000 0.000 0.000 0.000 0.000 0.000 0.278 WSW 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 W 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.046 0.186 0.093 0.000 0.000 0.000 0.000 0.000 0.325 SUBTOTAL 0.000 2.134 8.905 2.597 0.557 0.186 0.000 0.000 0.000 14.378 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS F 310 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 310 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 2.75 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-8

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

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.005 0.139 0.649 0.186 0.000 0.000 0.000 0.000 0.000 0.979 NNE 0.002 0.093 0.278 0.139 0.000 0.000 0.000 0.000 0.000 0.512 NE 0.002 0.186 0.232 0.000 0.000 0.000 0.000 0.000 0.000 0.420 ENE 0.001 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.187 E 0.002 0.232 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.280 ESE 0.001 0.139 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.187 SE 0.005 0.603 0.325 0.000 0.000 0.000 0.000 0.000 0.000 0.933 SSE 0.017 1.345 1.531 0.000 0.000 0.000 0.000 0.000 0.000 2.893 S 0.008 0.232 1.113 0.278 0.093 0.000 0.000 0.000 0.000 1.724 SSW 0.001 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.001 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.093 NNW 0.001 0.139 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.326 SUBTOTAL 0.046 3.525 4.360 0.742 0.093 0.000 0.000 0.000 0.000 8.766 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS G 189 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 189 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 1.95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-9

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 2 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 (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.046 0.046 0.092 0.000 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 0.092 0.000 0.000 0.000 0.092 ENE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.046 0.231 0.046 0.092 0.000 0.000 0.000 0.416 SE 0.000 0.000 0.323 0.369 0.000 0.000 0.000 0.000 0.000 0.693 SSE 0.000 0.000 0.739 0.092 0.000 0.000 0.000 0.000 0.000 0.831 S 0.000 0.000 0.600 0.416 0.000 0.000 0.000 0.000 0.000 1.016 SSW 0.000 0.000 0.416 0.877 0.046 0.000 0.000 0.000 0.000 1.339 SW 0.000 0.000 0.231 0.369 0.000 0.000 0.000 0.000 0.000 0.600 WSW 0.000 0.000 0.000 0.462 0.139 0.185 0.000 0.000 0.000 0.785 W 0.000 0.000 0.000 0.185 0.323 0.092 0.000 0.000 0.000 0.600 WNW 0.000 0.000 0.000 0.092 0.092 0.185 0.000 0.000 0.000 0.369 NW 0.000 0.000 0.000 0.000 0.046 0.231 0.185 0.000 0.000 0.462 NNW 0.000 0.000 0.000 0.000 0.000 0.185 0.000 0.000 0.000 0.185 SUBTOTAL 0.000 0.000 2.401 3.232 0.831 1.154 0.185 0.000 0.000 7.802 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS A 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 169 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 4.97 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 < AT * -1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.092 0.185 0.000 0.000 0.000 0.277 NNE 0.000 0.000 0.000 0.092 0.139 0.185 0.000 0.000 0.000 0.416 NE 0.000 0.000 0.000 0.092 0.046 0.000 0.000 0.000 0.000 0.139 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 0.092 0.000 0.000 0.000 0.000 0.139 SE 0.000 0.000 0. 323 0.277 0.000 0.000 0.000 0.000 0.000 0.600 SSE 0.000 0.000 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.277 S 0.000 0.000 0.416 0.139 0.000 0.000 0.000 0.000 0.000 0.554 SSW 0.000 0.000 0.323 0.369 0.000 0.000 0.000 0.000 0.000 0. 693 SW 0.000 0.000 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.231 WSW 0.000 0.000 0.092 0.231 0.185 0.046 0.000 0.000 0.000 0.554 W 0.000 0.000 0.046 0.046 0.185 0.139 0.000 0.000 0.000 0.416 WNW 0.000 0.000 0.000 0.092 0.046 0.323 0.092 0.000 0.000 0.554 NW 0.000 0.000 0.000 0.000 0.092 0.277 0.139 0.000 0.000 0.508 NNW 0.000 0.000 0.000 0.000 0.185 0.139 0.000 0.000 0.000 0.323 SUBTOTAL 0.000 0.000 1.708 1.385 1.062 1.293 0.231 0.000 0.000 5.679 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS B 123 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 123 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.87 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 < AT * -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.185 0.231 0.000 0.000 0.000 0.416 NNE 0.000 0.000 0.000 0.046 0.139 0.046 0.000 0.000 0.000 0.231 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 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.323 0.231 0.000 0.000 0.000 0.000 0.000 0.554 SSE 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 S 0.000 0.000 0.139 0.092 0.000 0.000 0.000 0.000 -0.000 0.231 SSW 0.000 0.000 0.416 0.231 0.046 0.000 0.000 0.000 0.000 0.693 SW 0.000 0.000 0.462 0.046 0.000 0.000 0.000 0.000 0.000 0.508 WSW 0.000 0.000 0.139 0.369 0.000 0.046 0.000 0.000 0.000 0.554 W 0.000 0.000 0.046 0.231 0.092 0.139 0.000 0.000 0.000 0.508 WNW 0.000 0.000 0.000 0.000 0.092 0.462 0.092 0.000 0.000 0.646 NW 0.000 0.000 0.000 0.092 0.046 0. 600 0.092 0.000 0.000 0.831 NNW 0.000 0.000 0.046 0.046 0.092 0.185 0.092 0.000 0.000 0.462 SUBTOTAL 0.000 0.000 1.801 1.477 0.693 1.754 0.277 0.000 0.000 6.002 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS C 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 130 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 6.13 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 < AT * -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.139 0.231 0.462 0.092 0.000 0.000 0.000 0.923 NNE 0.000 0.000 0.231 0.231 0.277 0.185 0.000 0.000 0.000 0. 923 NE 0.000 0.000 0.046 0.185 0.092 0.092 0.000 0.000 0.000 0.416 ENE 0.000 0.000 0.046 0.092 0.139 0.000 0.000 0.000 0.000 0.277 E 0.000 0.000 0.231 0.092 0.139 0.000 0.000 0.000 0.000 0.462 ESE 0.000 0.000 0.877 0.462 0.092 0.046 0.000 0.000 0.000 1.477 SE 0.000 0.000 1.016 0.231 0.000 0.000 0.000 0.000 0.000 1.247 SSE 0.000 0.000 1.108 0.046 0.000 0.000 0.000 0.000 0.000 1.154 S 0.000 0.092 2.632 0. 600 0.139 0.000 0.000 0.000 0.000 3.463 SSW 0.000 0.000 2.078 1 .524 0.231 0.000 0.000 0.000 0.000 3.832 SW 0.000 0.000 1.108 0.277 0.046 0.046 0.000 0.000 0.000 1.477 WSW 0.000 0.000 0.923 0. 600 0.369 0.092 0.000 0.000 0.000 1. 985 W 0.000 0.000 0.554 0.416 0.785 0.877 0.000 0.000 0.000 2. 632 WNW 0.000 0.000 0.139 0.508 0.554 1.524 0.600 0.000 0.000 3.324 NW 0.000 0.046 0.046 0.277 1.108 1.801 0.877 0.185 0.000 4.340 NNW 0.000 0.000 0.185 0.369 0.554 1.062 0.046 0.000 0.000 2.216 SUBTOTAL 0.000 0.139 11.357 6.140 4.986 5.817 1.524 0.185 0.000 30.148 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS D 653 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 653 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.69 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 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.046 0.554 0.369 0.092 0.000 0.000 0.000 0.000 1.062 NNE 0.000 0.000 0.462 0.323 0.046 0.000 0.000 0.000 0.000 0.831 NE 0.000 0.092 0.092 0.231 0.323 0.000 0.000 0.000 0.000 0.739 ENE 0.000 0.231 0.416 0.046 0.185 0.000 0.000 0.000 0.000 0.877 E 0.000 0.092 1.016 0. 600 0.000 0.000 0.000 0.000 0.000 1.708 ESE 0.000 0.092 1.616 0.739 0.092 0.000 0.000 0.000 0.000 2.539 SE 0.000 0.277 0.739 0.139 0.000 0.000 0.000 0.000 0.000 1.154 SSE 0.000 0.323 1.154 0.000 0.000 0.000 0.000 0.000 0.000 1.477 S 0.000 0.277 1.893 0.462 0.462 0.092 0.000 0.000 0.000 3.186 SSW 0.000 0.139 2.355 2.031 0.231 0.139 0.046 0.000 0.000 4.940 SW 0.000 0.092 0.646 0.092 0.000 0.000 0.000 0.000 0.000 0.831 WSW 0.000 0.092 0.646 0.323 0.046 0.000 0.000 0.000 0.000 1.108 W 0.000 0.092 0.739 0.369 0.185 0.139 0.000 0.000 0.000 1.524 WNW 0.000 0.000 0.185 0.046 0.046 0.092 0.046 0.000 0.000 0.416 NW 0.000 0.092 0.092 0.046 0.000 0.000 0.092 0.000 0.000 0.323 NNW 0.000 0.000 0.416 0 .462 0.092 0.139 0.000 0.000 0.000 1.108 SUBTOTAL 0.000 1.939 13.019 6.279 1.801 0.600 0.185 0.000 0.000 23.823 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS E 516 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 516 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 3.32 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 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.004 0.277 1.108 0.231 0.000 0.000 0.000 0.000 0.000 1.620 NNE 0.001 0.092 0.231 0.323 0.000 0.000 0.000 0.000 0.000 0.647 NE 0.001 0.231 0.139 0.046 0.092 0.000 0.000 0.000 0.000 0.509 ENE 0.004 0.739 0.693 0.277 0.092 0.000 0.000 0.000 0.000 1.805 E 0.008 0.693 2.031 0.277 0.000 0.000 0.000 0.000 0.000 3.009 ESE 0.008 0.785 1.754 0.000 0.000 0.000 0.000 0.000 0.000 2.547 SE 0.004 0.277 0.923 0.000 0.000 0.000 0.000 0.000 0.000 1.204 SSE 0.002 0.277 0.231 0.000 0.000 0.000 0.000 0.000 0.000 0.509 S 0.004 0.185 1.154 0.185 0.323 0.000 0.000 0.000 0.000 1.851 SSW 0.003 0.231 0.877 0.046 0.046 0.046 0.000 0.000 0.000 1.250 SW 0.001 0.185 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.370 WSW 0.001 0.000 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.185 W 0.001 0.139 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.231 WNW 0.001 0.185 0.046 0.000 0.000 0.046 0.000 0.000 0.000 0.278 NW 0.001 0.139 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.417 NNW 0.003 0.185 0.646 0.046 0.000 0.000 0.000 0.000 0.000 0.880 SUBTOTAL 0.046 4.617 10.526 1.477 0.554 0.092 0.000 0.000 0.000 17.313 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS F 375 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 375 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 2.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-16

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

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.035 0.600 1.016 0.185 0.000 0.000 0.000 0.000 0.000 1.835 NNE 0.014 0.462 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.660 NE 0.012 0.277 0.277 0.000 0.000 0.000 0.000 0.000 0.000 0.566 ENE 0.028 0.600 0.693 0:046 0.000 0.000 0.000 0.000 0.000 1.367 E 0.021 0.462 0.508 0.046 0.000 0.000 0.000 0.000 0.000 1.036 ESE 0.011 0.323 0.185 0.000 0.000 0.000 0.000 0.000 0.000 0.519 SE 0.007 0.277 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.330 SSE 0.018 0.231 0.600 0.000 0.000 0.000 0.000 0.000 0.000 0.849 S 0.012 0.139 0.416 0.092 0.000 0.000 0.000 0.000 0.000 0.658 SSW 0.005 0.139 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.236 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.002 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.094 W 0.001 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 WNW 0.001 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 NW 0.005 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.236 NNW 0.015 0.277 0.416 0.046 0.000 0.000 0.000 0.000 0.000 0.754 SUBTOTAL 0.185 4.155 4.478 0.416 0.000 0.000 0.000 0.000 0.000 9.234 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS G 200 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 200 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2166 TOTAL HOURS CALM 4 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 1.72 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-17

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 3 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 (AT ! -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.046 0.093 0.790 0.000 0.000 0.000 0.930 NNE 0.000 0.000 0.000 0.046 0.093 0.325 0.000 0.000 0.000 0.465 NE 0.000 0.000 0.000 0.000 0.093 0.046 0.000 0.000 0.000 0.139 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 0.046 0.046 0.000 0.000 0.000 0.000 0.139 ESE 0.000 0.000 0.046 0.465 0.465 0.000 0.000 0.000 0.000 0.976 SE 0.000 0.000 0. 697 1.860 0.046 0.000 0.000 0.000 0.000 2.603 SSE 0.000 0.000 1.209 0.837 0.000 0.000 0.000 0.000 0.000 2.046 S 0.000 0.000 1 .023 0.372 0.000 0.000 0.000 0.000 0.000 1.395 SSW 0.000 0.000 0. 325 0.232 0.000 0.000 0.000 0.000 0.000 0.558 SW 0.000 0.000 0. 093 0.279 0.000 0.000 0.000 0.000 0.000 0.372 WSW 0.000 0.000 0.000 0.279 0.093 0.000 0.000 0.000 0.000 0.372 W 0.000 0.000 0.000 0.186 0.232 0.232 0.000 0.000 0.000 0.651 WNW 0.000 0.000 0.000 0.000 0.046 0.279 0.000 0.000 0.000 0.325 NW 0.000 0.000 0.000 0.046 0.000 0.046 0.325 0.000 0.000 0.418 NNW 0.000 0.000 0.000 0.000 0.093 0.186 0.186 0.000 0.000 0.465 SUBTOTAL 0.000 0.000 3.440 4.695 1.302 1.906 0.511 0.000 0.000 11.855 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS A 255 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 255 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.32 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 < AT * -1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.046 0.139 0.232 0.000 0.000 0.000 0.418 NNE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.139 0.186 0.000 0.000 0.000 0.000 0.325 SE 0.000 0.000 0.232 0.186 0.000 0.000 0.000 0.000 0.000 0.418 SSE 0.000 0.000 0.372 0.279 0.000 0.000 0.000 0.000 0.000 0.651 S 0.000 0.000 0.511 0.093 0.000 0.000 0.000 0.000 0.000 0.604 SSW 0.000 0.000 0.325 0.093 0.000 0.000 0.000 0.000 0.000 0.418 SW 0.000 0.000 0.279 0.093 0.000 0.000 0.000 0.000 0.000 0.372 WSW 0.000 0.000 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.186 W 0.000 0.000 0.000 0.186 0.372 0.046 0.000 0.000 0.000 0.604 WNW 0.000 0.000 0.000 0.046 0.093 0.093 0.046 0.000 0.000 0.279 NW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.093 0.046 0.046 0.000 0.000 0.186 SUBTOTAL 0.000 0. 000 1.720 1.348 0.976 0.511 0.093 0.000 0.000 4.649 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS B 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM' 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.02 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 < AT * -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.093 0.139' 0.279 0.000 0.000 0.000 0.511 NNE 0.000 0.000 0.000 0.046 0.186 0.046 0.000 0.000 0.000 0.279 NE 0.000 0.000 0.000 0.046 0.046 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 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.139 ESE 0.000 0.000 0.093 0.232 0.093 0.000 0.000 0.000 0.000 0.418 SE 0.000 0.000 0 .372 0.139 0.000 0.000 0.000 0.000 0.000 0.511 SSE 0.000 0.000 0.511 0.046 0.000 0.000 0.000 0.000 0.000 0.558 S 0.000 0.000 0.418 0.186 0.000 0.000 0.000 0.000 0.000 0.604 SSW 0.000 0.000 0.232 0.046 0.000 0.000 0.000 0.000 0.000 0.279 SW 0.000 0.000 0.139 0.139 0.000 0.000 0.000 0.000 0.000 0.279 WSW 0.000 0.000 0.000 0.372 0.000 0.000 0.000 0.000 0.000 0.372 W 0.000 0.000 0.093 0.465 0.325 0.000 0.000 0.000 0.000 0.883 WNW 0.000 0.000 0.000 0.139 0.186 0.372 0.093 0.000 0.000 0.790 NW 0.000 0.000 0.000 0.232 0.186 0.046 0.093 0.000 0.000 0.558 NNW 0.000 0.000 0.046 0.000 0.186 0.186 0. 046 0.000 0.000 0.465 SUBTOTAL 0.000 0.000 1.953 2.232 1.395 0.930 0.232 0.000 0.000 6.741 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS C 145 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 145 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.26 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 < AT ! -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.139 0.651 0.325 0.186 0.000 0.000 0.000 1.302 NNE 0.000 0.000 0.139 0.325 0.558 0.279 0.000 0.000 0.000 1.302 NE 0.000 0.046 0.186 0.279 0.186 0.093 0.000 0.000 0.000 0.790 ENE 0.000 0.000 0.279 0.279 0.093 0.000 0.000 0.000 0.000 0. 651 E 0.000 0.000 0.418 0.279 0.372 0.093 0.000 0.000 0.000 1.162 ESE 0.000 0.046 0.744 1.395 0.651 0.000 0.000 0.000 0.000 2.836 SE 0.000 0.000 0.976 0.093 0.000 0.046 0.000 0.000 0.000 1.116 SSE 0.000 0.139 1. 627 0.046 0.000 0.000 0.000 0.000 0.000 1.813 S 0.000 0.000 1.441 0.046 0.000 0.000 0.000 0.000 0.000 1.488 SSW 0.000 0.093 1.813 0.279 0.000 0.000 0.000 0.000 0.000 2.185 SW 0.000 0.000 0.930 0.093 0.000 0.000 0.000 0.000 0.000 1.023 WSW 0.000 0.000 1.255 0. 930 0.046 0.000 0.000 0.000 0.000 2.232 W 0.000 - 0.000 0.186 1.488 0.837 0.046 0.000 0.000 0.000 2.557 WNW 0.000 0.046 0.000 0.697 0.465 0.186 0.000 0.000 0.000 1.395 NW 0.000 0.000 0.046 0.418 0.790 0.744 0.418 0.000 0.000 2.417 NNW 0.000 0.000 0.186 0.465 0.232 1.023 0.046 0.000 0.000 1.953 SUBTOTAL 0.000 0.372 10.367 7.764 4.556 2.696 0.465 0.000 0.000 26.220 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS D 565 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 564 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151

.0 TOTAL HOURS CALM METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 4.61 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 < AT < 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.006 0.093 0.976 0.744 0.046 0.000 0.000 0.000 0.000 1.865 NNE 0.004 0.046 0.604 0.279 0.046 0.000 0.000 0.000 0.000 0.980 NE 0.005 0.372 0.465 0.186 0.139 0.093 0.000 0.000 0.000 1.260 ENE 0.007 0.046 1.302 0.418 0.186 0.000 0.046 0.000 0.000 2.006 E 0.009 0.232 1.441 1.348 0.186 0.000 0.000 0.000 0.000 3.217 ESE 0.007 0.232 1.116 0.790 0.372 0.000 0.000 0.000 0.000 2.518 SE 0.008 0.511 0.930 0.046 0.000 0.000 0.000 0.000 0.000 1.496 SSE 0.004 0.186 0.604 0.000 0.000 0.000 0.000 0.000 0.000 0.795 S 0.010 0.186 1.581 0.000 0.000 0.000 0.000 0.000 0.000 1.776 SSW 0.006 0.279 0.744 0.186 0.093 0.000 0.000 0.000 0.000 1.307 SW 0.006 0.139 0.976 0.093 0.000 0.000 0.000 0.000 0.000 1.215 WSW 0.007 0.186 1.116 0.511 0.000 0.000 0.000 0.000 0.000 1.820 W 0.007 0.139 1.209 1.023 0.279 0.000 0.000 0.000 0.000 2.657 WNW 0.001 0.046 0.186 0.232 0.046 0.000 0.000 0.000 0.000 0.513 NW 0.002 0.000 0.325 0.279 0.093 0.000 0.000 0.000 0.000 0.699 NNW 0.003 0.046 0.558 0.232 0.465 0.186 0.000 0.000 0.000 1.491 SUBTOTAL 0.093 2.743 14.133 6.369 1.953 0.279 0.046 0.000 0.000 25.616 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS E 551 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 551 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 3.05 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 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.279 2.371 0.930 0.046 0.000 0.000 0.000 0.000 3.626 NNE 0.000 0.325 0.744 0.325 0.000 0.000 0.000 0.000 0.000 1.395 NE 0.000 0.139 0.558 0.093 0.139 0.000 0.046 0.000 0.000 0.976 ENE 0.000 0 .232 0.930 0.232 0.000 0.000 0.000 0.000 0.000 1.395 E 0.000 0.093 1.813 0.604 0.000 0.046 0.000 0.000 0.000 2.557 ESE 0.000 0.279 0.511 0.046 0.000 0.000 0.000 0.000 0.000 0.837 SE 0.000 0.093 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.279 SSE 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.232 S 0.000 0.186 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.325 SSW 0.000 0.139 0.279 0.000 0.000 0.000 0.000 0.000 0.000 0.418 SW 0.000 0.139 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.232 WSW 0.000 0.093 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.232 W 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.000 0.186 WNW 0.000 0.046 0.372 0.000 0.000 0.000 0.000 0.000 0.000 0.418 NW 0.000 0.000 0.139 0.000 0.000 0.000 0.000 0.000 0.000 0.139 NNW 0.000 0.186 0.465 0.232 0.186 0.000 0.000 0.000 0.000 1.069 SUBTOTAL 0.000 2.417 8.973 2.464 0.372 0.046 0.046 0.000 0.000 14.319 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS F 308 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 308 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 2.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-24

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

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 1.209 1.674 0.325 0.000 0.000 0.000 0.000 0.000 3.208 NNE 0.000 0.976 0.511 0.093 0.000 0.000 0.000 0.000 0.000 1.581 NE 0.000 0.744 0.558 0.046 0.000 0.000 0.000 0.000 0.000 1.348 ENE 0.000 0.418 0.651 0.232 0.000 0.000 0.000 0.000 0.000 1.302 E 0.000 0.139 0.558 0.093 0.000 0.000 0.000 0.000 0.000 0.790 ESE 0.000 0.139 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.186 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.186 SSE 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 S 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.139 SSW 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NNW 0.000 0.744 0.651 0.093 0.000 0.000 0.000 0.000 0.000 1.488 SUBTOTAL 0.000 4.788 4.881 0.930 0.000 0.000 0.000 0.000 0.000 10.600 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2152 TOTAL HOURS OF STABILITY CLASS G 228 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 228 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2151 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 1.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-25

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 4 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 (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.137 NNE 0.000 0.000 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.137 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 0.091 0.228 0.000 0.000 0.000 0.000 0.319 SE 0.000 0.000 0.137 0.865 0.137 0.000 0.000 0.000 0.000 1.138 SSE 0.000 0.000 0.546 0.820 0.000 0.000 0.000 0.000 0.000 1.366 S 0.000 0.000 0.046 0.410 0.000 0.000 0.000 0.000 0.000 0.455 SSW 0.000 0.000 0.137 0.455 0.000 0.000 0.000 0.000 0.000 0.592 SW 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.000 0.000 0.091 WSW 0.000 0.000 0.000 0.182 0.046 0.000 0.000 0.000 0.000 0.228 W 0.000 0.000 0.000 0.000 0.000 0.182 0.000 0.000 0.000 0.182 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 0.000 0.046 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.000 0.319 0.000 0.000 0.000 0.319 SUBTOTAL 0.000 0.000 0.865 2.914 0.501 0.774 0.046 0.000 0.000 5.100 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS A 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.18 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 < AT * -1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.273 0.000 0.000 0.000 0.319 NNE 0.000 0.000 0.000 0.000 0.000 0.046 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 0.182 0.046 0.046 0.000 0.000 0.000 0.273 SE 0.000 0.000 0.091 0.091 0.091 0.000 0.000 0.000 0.000 0.273 SSE 0.000 0.000 0.228 0.137 0.000 0.000 0.000 0.000 0.000 0.364 S 0.000 0.000 0.182 0.182 0.000 0.000 0.000 0.000 0.000 0.364 SSW 0.000 0.000 0.046 0.000 0.091 0.000 0.000 0.000 0.000 0.137 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 0.137 0.000 0.000 0.000 0.000 0.000 0.137 W 0.000 0.000 0.046 0.091 0.000 0.182 0.000 0.000 0.000 0.319 WNW 0.000 0.000 0.000 0.000 0.091 0.046 0.091 0.000 0.000 0.228 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 0.046 0.000 0.000 0.000 0.046 SUBTOTAL 0.000 0.000 0.592 0.820 0.364 0.638 0.091 0.000 0.000 2.505 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS B 55 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 55 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 5.83 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 < AT < -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 18.5-24.4 224.5 TOTAL N 0.000 0.000 0.000 0.000 0.091 0.137 0.000 0.000 0.000 0.228 NNE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.091 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 0.046 0.000 0.000 0.000 0.046 E 0.000 0.000 0.000. 0.046 0.046 0.000 0.000 0.000 0.000 0.091 ESE 0.000 0.000 0.046 0.091 0.046 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.000 0.228 0.000 0.000 0.000 0.000 0.000 0.228 SSE 0.000 0.000 0.182 0.182 0.000 0.000 0.000 0.000 0.000 0.364 S 0.000 0.000 0.091 0.046 0.000 0.000 0.000 0.000 0.000 0.137 SSW 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.091 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 0.046 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.091 0.046 0.228 0.000 0.000 0.000 0.364 WNW 0.000 0.000 0.000 0.046 0.091 0.455 0.046 0.000 0.000 0. 638 NW 0.000 0.000 0.000 0.000 0.046 0.228 0.046 0.000 0.000 0.319 NNW 0.000 0.000 0.000 0.000 0.046 0.228 0.046 0.000 0.000 0.319 SUBTOTAL 0.000 0.000 0.364 0.865 0.501 1.366 0.137 0.000 0.000 3.233 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS C 71 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 71 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 6.81 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 < AT * -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 18.5-24.4 224.5 TOTAL N 0.000 0.000 0.091 0.273 0.956 1.047 0.000 0.000 0.000 2.368 NNE 0.000 0.000 0.046 0.410 0.956 0. 683 0.000 0.000 0.000 2.095 NE 0.000 0.000 0.091 0.091 0.137 0.364 0.000 0.000 0.000 0.683 ENE 0.000 0.000 0.137 0.182 0.046 0.000 0.000 0.000 0.000 0.364 E 0.000 0.046 0.364 0.182 0.091 0.000 0.000 0.000 0.000 0.683 ESE 0.000 0.000 0.638 0.455 0.137 0.046 0.000 0.000 0.000 1.275 SE 0.000 0.000 0.592 0. 638 0.046 0.000 0.000 0.000 0.000 1.275 SSE 0.000 0.000 1.184 0.729 0.000 0.046 0.000 0.000 0.000 1.958 S 0.000 0.000 0.956 0.455 0.273 0.046 0.000 0.000 0.000 1.730 SSW 0.000 0.000 0.501 0.501 0.091 0.228 0.000 0.000 0.000 1.321 SW 0.000 0.000 0.046 0.592 0.091 0.046 0.000 0.000 0.000 0.774 WSW 0.000 0.000 0.137 0.319 0.273 0.137 0.000 0.000 0.000 0.865 W 0.000 0.000 0.091 0.455 0.911 1.776 0.137 0.000 0.000 3.370 WNW 0.000 0.000 0.137 0.455 0.319 0.865 0.683 0.046 0.000 2.505 NW 0.000 0.000 0.137 0.364 0.911 1.958 1.412 0.000 0.000 4.781 NNW 0.000 0.000 0.000 0.546 1.321 2.004 0.046 0.000 0.000 3.916 SUBTOTAL 0.000 0.046 5.146 6.648 6.557 9.244 2.277 0.046 0.000 29.964 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS D 658 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 658 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 6.82 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 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.091 0.410 0.592 0.228 0.091 0.000 0.000 0.000 1.412 NNE 0.000 0.000 0.410 0.273 0.091 0.182 0.000 0.000 0.000 0.956 NE 0.000 0.000 0.182 0.182 0.046 0.000 0.000 0.000 0.000 0.410 ENE 0.000 0.000 0.455 0.319 0.000 0.000 0.000 0.000 0.000 0.774 E 0.000 0.046 0.865 0.683 0.000 0.000 0.000 0.000 0.000 1.594 ESE 0.000 0.091 0.956 0.683 0.273 0.091 0.000 0.000 0.000 2.095 SE 0.000 0.228 1.412 0.865 0.410 0.000 0.000 0.000 0.000 2.914 SSE 0.000 0.000 1.685 0.410 0.000 0.000 0.000 0.000 0.000 2.095 S 0.000 0.000 1.366 2.368 0.865 0.046 0.000 0.000 0.000 4.645 SSW 0.000 0.000 0.319 0.455 0.228 0.046 0.000 0.000 0.000 1.047 SW 0.000 0.091 0.228 0.137 0.000 0.000 0.000 0.000 0.000 0.455 WSW 0.000 0.046 0.501 0.364 0.000 0.000 0.000 0.000 0.000 0.911 W 0.000 0.091 0.319 1.047 0.273 0.137 0.000 0.000 0.000 1.867 WNW 0.000 0.046 0.364 0.182 0.137 0.182 0.000 0.000 0.000 0.911 NW 0.000 0.000 0.273 0.364 0.410 0.364 0.137 0.000 0.000 1.548 NNW 0.000 0.000 0.228 0.410 0.364 0.273 0.046 0.000 0.000 1.321 SUBTOTAL 0.000 0.729 9.973 9.335 3.324 1.412 0.182 0.000 0.000 24.954 TUTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS E 548 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 548 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 4.07 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 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.091 1.184 0.592 0.046 0.000 0.000 0.000 0.000 1.913 NNE 0.000 0.000 0.319 0.546 0.046 0.046 0.000 0,000 0.000 0.956 NE 0.000 0.046 0.319 0.364 0.000 0.000 0.000 0.000 0.000 0.729 ENE 0.000 0.228 0.820 0.455 0.046 0.000 0.000 0,000 0.000 1.548 E 0.000 0.137 1.594 0.774 0.000 0.000 0.000 0.000 0.000 2.505 ESE 0.000 0.137 1.685 0.182 0.000 0.000 0.000 0.000 0.000 2.004 SE 0.000 0.546 0.865 0.046 0.000 0.000 0.000 0.000 0.000 1.457 SSE 0.000 0.410 1.594 0.091 0.000 0.000 0.000 0.000 0.000 2.095 S 0.000 0.091 1.821 1.503 0.182 0.000 0.000 0.000 0.000 3.597 SSW 0.000 0.046 0.137 0.091 0.000 0.000 0.000 0.000 0.000 0.273 SW 0.000 0.046 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.137 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 0.091 WNW 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.137 NW 0.000 0.046 0.410 0.091 0.000 0.000 0.000 0.000 0.000 0.546 NNW 0.000 0.000 0.546 0.319 0.228 0.000 0.000 0.000 0.000 1.093 SUBTOTAL 0.000 1.913 11.475 5.100 0.546 0.046 0.000 0.000 0.000 19.080 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS F 419 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 419 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 2.89 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-32

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.020 0.865 2.095 0.729 0.000 0.000 0.000 0.000 0.000 3.708 NNE 0.010 0. 683 0.774 0.182 0.046 o.0oo 0.000 0.000 0.000 1.695 NE 0.007 0.410 0.683 0.137 0.000 0.000 0.000 0.000 0.000 1.237 ENE 0.011 0.455 1.184 0.091 0.000 0.000 0.000 0.000 0.000 1.741 E 0.005 0.182 0.592 0.000 0.000 0.000 0.000 0.000 0.000 0.779 ESE 0.002 0.091 0.273 0.000 0.000 0.000 0.000 0.000 0.000 0.367 SE 0.003 0.182 0.228 0.000 0.000 0.000 0.000 0.000 0.000 0.413 SSE 0.008 0.410 0.820 0.000 0.000 0.000 0.000 0.000 0.000 1.238 S 0.007 0.182 0.865 0.046 0.000 0.000 0.000 0.000 0.000 1.100 SSW 0.000 0.046 0.000 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 0.046 0.000 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 0.004 0.501 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.596 NNW 0.014 0.774 1.321 0.046 0.000 0.000 0.000 0.000 0.000 2.154 SUBTOTAL 0.091 4.827 8.971 1.230 0.046 0.000 0.000 0.000 0.000 15.164 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2196 TOTAL HOURS OF STABILITY CLASS G 333 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 333 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2196 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.50 METER LEVEL MEAN WIND SPEED = 2.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-33

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 5 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FIRST QUARTER E2-34

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .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 0.019 0.000 0.000 0.000 0.019 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 0.004 0.000 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.000 0.000 0.000 0.007 0.009 0.000 0.000 0.000 0.017 SE 0.000 0.000 0.000 0.113 0.058 0.009 0.000 0.000 0.000 0.180 SSE 0.000 0.000 0.012 0.143 0.000 0.000 0.000 0.000 0.000 0.154 S 0.000 0.000 0.000 0.018 0.000 0.000 0.000 0.000 0.000 0.018 SSW 0.000 0.000 0.005 0.014 0.000 0.000 0.000 0.000 0.000 0.019 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 0.015 0.000 0.000 0.000 0.015 NNW 0.000 0.000 0.000 0.000 0.000 0.009 0.065 0.000 0.000 0.074 SUBTOTAL 0.000 0.000 0.016 0.292 0.065 0.068 0.065 0.000 0.000 0.507 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS A 16.480 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 10.930 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 < AT * -1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24. 5 TOTAL N 0.000 0.000 0.000 0.000 0.018 0.006 0.000 0.000 0.000 0.023 NNE 0.000 0.000 0.000 0.000 0.000 0.018 0.000 0.000 0.000 0.018 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 0.002 0.000 0.000 0.000 0.000 0.002 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 0.000 0.002 0.000 0.023 0.000 0.000 0.000 0.025 SE 0.000 0.000 0.002 0.011 0.009 0.000 0.000 0.000 0.000 0.021 SSE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 S 0.000 0.000 0. 002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 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 0.017 0.000 0.000 0.000 0.000 0.000 0.017 WSW 0.000 0.000 0.000 0.031 0.006 0.000 0.000 0.000 0.000 0.037 W 0.000 0.000 0.000 0.005 0.012 0.000 0.000 0.000 0.000 0.017 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 0.032 0.064 0.000 0.000 0.095 NNW 0.000 0.000 0.000 0.000 0.005 0.056 0.010 0.000 0.000 0.071 SUBTOTAL 0.000 0.000 0.012 0.074 0.051 0.139 0.073 0.000 0.000 0.349 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS B 12.680 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 7.530 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 < AT * -1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.001 0.015 0.000 0.000 0.000 0.016 NNE 0.000 0.000 0.000 0.000 0.008 0.025 0.000 0.000 0.000 0.033 NE 0.000 0.000 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.020 ENE 0 .000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.007 E 0 .000 0.000 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.010 ESE 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.006 SE 0.000 0.000 0.005 0.000 0.000 0.051 0.000 0.000 0.000 0.056 SSE 0.000 0.000 0.005 0.032 0.000 0.000 0.000 0.000 0.000 0.037 S 0.000 0.000 0.000 0.011 0.000 0.000 0.000 0.000 0.000 0.011 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 0.003 0.008 0.000 0.000 0.000 0.000 0.011 WSW 0.000 0.000 0.000 0.009 0.019 0.008 0.000 0.000 0.000 0.036 W 0.000 0.000 0.000 0.000 0.006 0.024 0.000 0.000 0.000 0.029 WNW 0.000 0.000 0.000 0.000 0.003 0.012 0.013 0.000 0.000 0.028 NW 0.000 0.000 0.000 0.000 0.011 0.062 0.027 0.000 0.000 0.100 NNW 0.000 0.000 0.000 0.000 0.008 0.044 0.000 0.000 0.000 0.053 SUBTOTAL 0.000 0.000 0.010 0.062 0.074 0.267 0.041 0.000 0.000 0.454 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS C 36.600 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 9.780 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 < AT * -0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.002 0.041 0.122 0.220 0.000 0.000 0.000 0.385 NNE 0.000 0.000 0.000 0.049 0.115 0.160 0.000 0.000 0.000 0.324 NE 0.000 0.000 0.000 0.049 0.105 0.127 0.000 0.000 0.000 0.281 ENE 0.000 0.000 0.000 0.048 0.075 0.030 0.000 0.000 0.000 0.153 E 0.000 0.000 0.006 0.029 0.037 0.008 0.000 0.000 0.000 0.080 ESE 0.000 0.000 0.000 0.115 0.029 0.164 0.000 0.000 0.000 0.307 SE 0.000 0.000 0.021 0.237 0.081 0.097 0.000 0.000 0.000 0.436 SSE 0.000 0.000 0.007 0.266 0.093 0.000 0.000 0.000 0.000 0.366 S 0.000 0.000 0.018 0. 058 0.000 0.000 0.000 0.000 0.000 0.076 SSW 0.000 0.000 0.016 0.031 0.009 0.000 0.000 0.000 0.000 0.056 SW 0.000 0.000 0.009 0.027 0.044 0.000 0.000 0.000 0.000 0.079 WSW 0.000 0.000 0.000 0.040 0.030 0.078 0.000 0.000 0.000 0.148 W 0.000 0.000 0.005 0.040 0.080 0.179 0.060 0.000 0.000 0.364 WNW 0.000 0.000 0.000 0.005 0.031 0.158 0.422 0.000 0.000 0.615 NW 0.000 0.000 0.000 0.006 0.056 0.501 0.451 0.143 0.000 1.156 NNW 0.000 0.000 0.000 0.018 0.106 0.503 0.140 0.000 0.000 0.767 SUBTOTAL 0.000 0.000 0.084 1.057 1.012 2.225 1.072 0.143 0.000 5.593 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS D 1005.710 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 120.590 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 0.041 0.029 0.025 0.000 0.000 0.000 0.111 NNE 0.000 0.000 0.020 0.103 0.054 0.017 0.000 0.000 0.000 0.194 NE 0.000 0.000 0.010 0.070 0.042 0.046 0.000 0.000 0.000 0.168 ENE 0.000 0.000 0.015 0.037 0.013 0.000 0.000 0.000 0.000 0.065 E 0.000 0.000 0.037 0.038 0.000 0.000 0.000 0.000 0.000 0.076 ESE 0.000 0.002 0.079 0. 105 0.033 0.000 0.000 0.000 0.000 0.219 SE 0.000 0.009 0.108 0.182 0.241 0.085 0.000 0.000 0.000 0.625 SSE 0.000 0.004 0.145 0.461 0.046 0.000 0.000 0.000 0.000 0.657 S 0.000 0.003 0.083 0.214 0.141 0.179 0.000 0.000 0.000 0. 620 SSW 0.000 0.003 0.013 0.072 0.204 0.260 0.000 0.000 0.000 0.553 SW 0.000 0.000 0.013 0.076 0.028 0.000 0.000 0.000 0.000 0.116 WSW 0.000 0.000 0.035 0.026 0.041 0.000 0.000 0.000 0.000 0.102 W 0.000 0.000 0.012 0.062 0.029 0.018 0.000 0.000 0.000 0.121 WNW 0.000 0.000 0.000 0.010 0.006 0.015 0.018 0.000 0.000 0.048 NW 0.000 0.000 0.000 0.010 0.006 0.091 0.000 0.000 0.000 0.108 NNW 0.000 0.000 0.003 0.014 0.066 0.040 0.010 0.000 0.000 0.133 SUBTOTAL 0.000 0.021 0.590 1.522 0.978 0.776 0.027 0.000 0.000 3.916 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS E 704.110 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 84.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-i2.4 12.5-18.4 18.5-24.4 Ž24.5 TOTAL N 0.000 0.000 0.054 0.018 0.000 0.000 0.000 0.000 0.000 0.071 NNE 0.000 0.000 0.009 0.058 0.017 0.000 0.000 0.000 0.000 0.083 NE 0.000 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.000 0.010 ENE 0.000 0.002 0.015 0.011 0.000 0.000 0.000 0.000 0.000 0.028 E 0.000 0.005 0.054 0.019 0.000 0.000 0.000 0.000 0.000 0.078 ESE 0.000 0.006 0.088 0.023 0.000 0.000 0.000 0.000 0.000 0.116 SE 0.000 0.010 0.180 0.052 0.000 0.000 0.000 0.000 0.000 0.243 SSE 0.000 0.028 0.348 0.000 0.000 0.000 0.000 0.000 0.000 0.376 S 0.000 0.017 0.164 0.168 0.130 0.170 0.000 0.000 0.000 0.650 SSW 0.000 0.013 0.039 0.030 0.000 0.000 0.000 0.000 0.000 0.082 SW 0.000 0.000 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.014 WSW 0.000 0.001 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.002 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.004 WNW 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.008 NW 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 NNW 0.000 0.000 0.014 0.013 0.000 0.000 0.000 0.000 0.000 0.027 SUBTOTAL 0.000 0.082 0.985 0.402 0.162 0.170 0.000 0.000 0.000 1.801 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS F 295.720 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 38.840 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 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 (AT > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.012 0.025 0.000 0.000 0.000 0.000 0.000 0.038 NNE 0.000 0.000 0.007 0.013 0.000 0.000 0.000 0.000 0.000 0.020 NE 0.000 0.000 0.004 0.000 0.000 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 0.000 E 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 ESE 0.000 0.006 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.010 SE 0.001 0.059 0.037 0.000 0.000 0.000 0.000 0.000 0.000 0.097 SSE 0.002 0.137 0.212 0.000 0.000 0.000 0.000 0.000 0.000 0.352 S 0.001 0.034 0.194 0.054 0.058 0.000 0.000 0.000 0.000 0.342 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 0.007 0.000 0.000 0.000 0.000 0.000 0.007 NNW 0.000 0.000 0.000 0.013 0.000 0.000 0.000 0.000 0.000 0.013 SUBTOTAL 0.004 0.237 0.474 0.112 0.058 0.000 0.000 0.000 0.000 0.885 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF GROUND LEVEL RELEASE 291.180 TOTAL HOURS OF STABILITY CLASS G 84.700 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 19.090 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-41

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .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 0.045 0.084 0.000 0.000 0.000 0.129 SSE 0.000 0.000 0.000 0.000 0.000 0.082 0.000 0.000 0.000 0.082 S 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.000 0.000 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 0.091 0.167 0.000 0.000 0.000 0.257 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS A 16.480 TOTAL HOURS OF ELEVATED STABILITY CLASS A 5.550 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-42

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .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 0.046 0.000 0.000 0.015 0.000 0.061 SSE 0.000 0.000 0.000 0.000 0.046 0.085 0.000 0.000 0.000 0.131 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 0.000 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 0.046 0.092 0.085 0.000 0.015 0.000 0.239 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS B 12.680 TOTAL HOURS OF ELEVATED STABILITY CLASS B 5.150 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-43

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.080 0.000 0.000 0.000 0.080 NNE 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 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 0.089 0.039 0.037 0.000 0.000 0.165 SE 0.000 0.000 0.000 0.046 0.178 0.041 0.000 0.000 0.000 0.266 SSE 0.000 0.000 0.000 0.000 0.046 0.041 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 0.000 0.046 0.046 0.000 0.077 0.000 0.000 0.170 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 0.132 0.041 0.000 0.000 0.000 0.173 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 0.037 0.000 0.000 0.037 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.113 0.000 0.000 0.113 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.113 0.000 0.000 0.113 SUBTOTAL 0.000 0.000 0.000 0.093 0.492 0.282 0.377 0.000 0.000 1.244 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS C 36.600 TOTAL HOURS OF ELEVATED STABILITY CLASS C 26.820 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-44

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 18.5-24.4 224 .5 TOTAL N 0.000 0.000 0.093 0.278 0.537 1.567 0.983 0.035 0.000 3.493 NNE 0.000 0.000 0.046 0. 603 0.488 1.661 0.421 0.000 0.000 3.220 NE 0.000 0.000 0.093 0.278 0.847 1.514 0.000 0.000 0.000 2 .732 ENE 0.000 0.000 0.046 0.464 0.892 0.783 0.000 0.000 0.000 2.186 E 0.000 0.000 0.046 0.464 0.619 0.622 0.038 0.000 0.000 1.789 ESE 0.000 0.000 0.139 0.557 0.408 0.859 0.299 0.103 0.000 2.364 SE 0.000 0.000 0.139 0.417 0.178 0.399 0.152 0.274 0.029 1.588 SSE 0.000 0.000 0.186 0.232 0.091 0.243 0.113 0.043 0.012 0.920 S 0.000 0.000 0.186 0.232 0.313 0.161 0.115 0.000 0.000 1.006 SSW 0.000 0.000 0.093 0.186 0.271 0.332 0.114 0.000 0.000 0.994 SW 0.000 0.000 0.046 0.417 0.445 0.694 0.379 0.000 0.000 1.982 WSW 0.000 0.000 0.000 0.232 0.220 0.988 0.415 0.000 0.000 1.855 W 0.000 0.000 0.000 0.417 0.763 0.614 0.944 0.183 0.000 2.922 WNW 0.000 0.000 0.046 0.510 0.354 1.172 1.313 0.631 0.000 4.026 NW 0.000 0.000 0.046 0.510 0.577 2.128 1.848 0.442 0.031 5.582 NNW 0.000 0.000 0.046 0.278 0.529 1.682 1.553 0.306 0.000 4.395 SUBTOTAL 0.000 0.000 1.252 6.076 7.532 15.420 8.686 2.016 0.072 41.054 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS D 1005.710 TOTAL HOURS OF ELEVATED STABILITY CLASS D 885.120 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-45

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.046 0.312 0.731 0.113 0.000 0.000 1.203 NNE 0.000 0.000 0.000 0.046 0.482 1.250 0.152 0.000 0.000 1.931 NE 0.000 0.000 0.046 0.093 0.618 0.911 0.192 0.000 0.000 1.861 ENE 0.000 0.000 0.093 0.139 0.403 0.210 0.000 0.000 0.000 0.845 E 0.000 0.046 0.093 0.093 0.442 0.370 0.000 0.000 0.000 1.044 ESE 0.000 0.000 0.325 0.278 0.629 0.944 0.267 0.016 0.007 2.467 SE 0.000 0.000 0.232 0.186 0.354 1.008 1.435 0.256 0.044 3.514 SSE 0.000 0.000 0.139 0.325 0.629 0.524 0.522 0.163 0.019 2.322 S 0-000 0.000 0.093 0.325 0.487 0.571 1.167 0.419 0.014 3.077 SSW 0.000 0.000 0.000 0.325 0.315 0.686 0.978 0.419 0.006 2.729 SW 0.000 0.000 0.046 0.278 0.717 0.986 0.528 0.034 0.000 2.590 WSW 0.000 0.000 0.000 0.046 0.264 0.629 0.304 0.000 0.000 1.244 W 0.000 0.000 0.046 0.093 0.400 0.579 0.000 0.000 0.009 1.127 WNW 0.000 0.000 0.046 0.139 0.132 0.160 0.076 0.000 0.000 0.554 NW 0.000 0.000 0.139 0.186 0.046 0.359 0.342 0.000 0.000 1.071 NNW 0.000 0.000 0.046 0.139 0.180 0.608 0.191 0.000 0.000 1.165 SUBTOTAL 0.000 0.046 1.345 2.737 6.412 10.528 6.267 1.307 0.100 28.743 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS E 704.110 TOTAL HOURS OF ELEVATED STABILITY CLASS E 619.690 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-46

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.046 0.046 0.089 0.410 0.038 0.000 0.000 0.629 NNE 0.000 0.000 0.186 0.000 0.089 0.163 0.038 0.000 0.000 0.475 NE 0.000 0.000 0.000 0.000 0.045 0.083 0.000 0.000 0.000 0.128 ENE 0.000 0.046 0.046 0.093 0.179 0.327 0.000 0.000 0.000 0.691 E 0.000 0.000 0.000 0.093 0.090 0.332 0.000 0.000 0.000 0.514 ESE 0.000 0.000 0.046 0.186 0.225 0.454 0.000 0.000 0.000 0.910 SE 0.000 0.000 0.046 0.046 0.267 1.143 0.267 0.076 0.010 1.856 SSE 0.000 0.000 0.046 0.371 0.404 0.202 0.412 0.072 0.000 1.508 S 0.000 0.000 0.093 0.232 0.224 0.880 0.606 0.108 0.000 2.142 SSW 0.000 0.000 0.046 0.093 0.219 0.623 0.115 0.000 0.000 1.097 SW 0.000 0.000 0.139 0.186 0.538 0.212 0.000 0.000 0.000 1.075 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 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.139 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 0.000 0.232 0 .044 0.039 0.000 0.000 0.000 0.314 NNW 0.000 0.000 0.000 0.093 0 .044 0.122 0.038 0.000 0.000 0.298 SUBTOTAL 0.000 0.046 0.788 1.763 2.547 4.988 1.515 0.256 0.010 11.915 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS F 295.720 TOTAL HOURS OF ELEVATED STABILITY CLASS F 256.880 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-47

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.046 0.000 0.045 0.000 0.000 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 0.093 0.046 0.087 0.041 0.000 0.000 0.000 0.267 ENE 0.000 0.000 0.046 0.000 0.000 0.043 0.000 0.000 0.000 0.089 E 0.000 0.000 0.046 0.046 0.046 0.000 0.000 0.000 0.000 0.139 ESE 0.000 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.139 SE 0.000 0.000 0.139 0.046 0.046 0.000 0.038 0.032 0.000 0.301 SSE 0.000 0.000 0.093 0.046 0.046 0.000 0.226 0.000 0.000 0.411 S 0.000 0.000 0.000 0.000 0.135 0.164 0.228 0.000 0.000 0.527 SSW 0.000 0.000 0.046 0.093 0.088 0.168 0.000 0.000 0.000 0.396 SW 0.000 0.000 0.046 0.093 0.178 0.043 0.000 0.000 0.000 0.360 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 0.093 0.093 0.000 0.000 0.000 0.000 0.000 0.186 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.044 0.000 0.000 0.000 0.000 0.044 SUBTOTAL 0.000 0.046 0.742 0.557 0.716 0.459 0.492 0.032 0.000 3.043 TOTAL HOURS OF VALID OBSERVATIONS 2156.000 TOTAL HOURS OF ELEVATED RELEASES 1864.820 TOTAL HOURS OF STABILITY CLASS G 84.700 TOTAL HOURS OF ELEVATED STABILITY CLASS G 65.610 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-48

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 6 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

SECOND QUARTER E2-49

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.001 0.006 0.014 0.000 0.000 0.000 0.020 NNE 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 NE 0.000 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.012 ENE 0.000 0.000 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.023 E 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.009 ESE 0.000 0.000 0.000 0.022 0.008 0.036 0.000 0.000 0.000 0.065 SE 0.000 0.000 0.025 0.029 0.000 0.000 0.000 0.000 0.000 0.055 SSE 0.000 0.000 0.054 0.005 0.000 0.000 0.000 0.000 0.000 0.058 S 0.000 0.000 0.075 0.039 0.000 0.000 0.000 0.000 0.000 0.114 SSW 0.000 0.000 0.052 0.159 0.009 0.000 0.000 0.000 0.000 0.221 SW 0.000 0.000 0.006 0.035 0.000 0.000 0.000 0.000 0.000 0.041 WSW 0.000 0.000 0.000 0.057 0.019 0.026 0.000 0.000 0.000 0.101 W 0.000 0.000 0.000 0.006 0.033 0.014 0.000 0.000 0.000 0.053 WNW 0.000 0.000 0.000 0.004 0.006 0.030 0.000 0.000 0.000 0.040 NW 0.000 0.000 0.000 0.000 0.002 0.036 0.041 0.000 0.000 0.080 NNW 0.000 0.000 0.000 0.000 0.000 0.027 0.000 0.000 0.000 0.027 SUBTOTAL 0.000 0.000 0.234 0.365 0.093 0.195 0.041 0.000 0.000 0.928 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS A 32.540 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 19.850 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-50

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 18.5-24.4 224. 5 TOTAL N 0.000 0.000 0.000 0.000 0.009 0.028 0.000 0.000 0.000 0.036 NNE 0.000 0.000 0.000 0.000 0.011 0.027 0.000 0.000 0.000 0.038 NE 0.000 0.000 0.000 0.001 0.002 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 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 0.026 0.000 0.000 0.000 0.000 0.026 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 0.013 0.000 0.000 0.000 0.000 0.000 0.000 0.013 S 0.000 0.000 0.028 0.010 0.000 0.000 0.000 0.000 0.000 0. 038 SSW 0.000 0.000 0.017 0.058 0.000 0.000 0.000 0.000 0.000 0.075 SW 0.000 0.000 0.009 0.007 0.000 0.000 0.000 0.000 0.000 0.016 WSW 0.000 0.000 0.006 0.012 0.023 0.009 0.000 0.000 0.000 0.049 W 0.000 0.000 0.000 0.003 0.020 0.023 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.002 0.056 0.018 0.000 0.000 0.076 NW 0.000 0.000 0.000 0.000 0.008 0.038 0.031 0.000 0.000 0.077 NNW 0.000 0.000 0.000 0.000 0.017 0.022 0.000 0.000 0.000 0.039 SUBTOTAL 0.000 0.000 0.075 0.109 0.117 0.203 0.050 0.000 0.000 0.553 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS B 34.990 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 11.830 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-51

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.020 0.034 0.000 0.000 0.000 0.054 NNE 0.000 0.000 0.000 0.001 0.010 0.008 0.000 0.000 0.000 0.019 NE 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.008 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 0.006 0.012 0.000 0.000 0.000 0.000 0.000 0.018 SE 0.000 0.000 0.012 0.004 0.000 0.000 0.000 0.000 0.000 0.015 SSE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 S 0.000 0.000 0.014 0.014 0.000 0.000 0.000 0.000 0.000 0.028 SSW 0.000 0.000 0.026 0.034 0.000 0.000 0.000 0.000 0.000 0.060 SW 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 WSW 0.000 0.000 0.000 0.015 0.000 0.008 0.000 0.000 0.000 0.024 W 0.000 0.000 0.000 0.007 0.013 0.023 0.000 0.000 0.000 0.044 WNW 0.000 0.000 0.000 0.000 0.003 0.071 0.019 0.000 0.000 0.094 NW 0.000 0.000 0.000 0.000 0.005 0.093 0.018 0.000 0.000 0.116 NNW 0.000 0.000 0.000 0.000 0.012 0.031 0.047 0.000 0.000 0.090 SUBTOTAL 0.000 0.000 0.071 0.087 0.063 0.276 0.085 0.000 0.000 0.582 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS C 116.910 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 12.440 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-52

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.010 0.058 0.017 0.000 0.000 0.000 0.086 NNE 0.000 0.000 0.000 0.005 0.032 0.030 0.000 0.000 0.000 0.067 NE 0.000 0.000 0.000 0.003 0.007 0.016 0.000 0.000 0.000 0.027 ENE 0.000 0.000 0.000 0.002 0.011 0.000 0.000 0.000 0.000 0.013 E 0.000 0.000 0.017, 0.011 0.023 0.000 0.000 0.000 0.000 0.051 ESE 0.000 0.000 0.075 0.097 0.019 0.010 0.000 0.000 0.000 0.200 SE 0.000 0.000 0.055 0.035 0.000 0.000 0.000 0.000 0.000 0.090 SSE 0.000 0.000 0.055 0.006 0.000 0.000 0.000 0.000 0.000 0.060 S 0.000 0.000 0.192 0.117 0.051 0.000 0.000 0.000 0.000 0.361 SSW 0.000 0.000 0.209 0.343 0.092 0.000 0.000 0.000 0.000 0.644 SW 0.000 0.000 0.069 0.028 0.009 0.047 0.000 0.000 0.000 0.152 WSW 0.000 0.000 0.012 0.045 0.053 0.018 0.000 0.000 0.000 0.128 W 0.000 0.000 0.012 0.022 0.099 0.117 0.000 0.000 0.000 0.249 WNW 0.000 0.000 0.000 0.011 0.037 0.215 0.111 0.000 0.000 0.375 NW 0.000 0.000 0.000 0.005 0.089 0.292 0.255 0.109 0.000 0.750 NNW 0.000 0.000 0.000 0.013 0.057 0.164 0.023 0.000 0.000 0.256 SUBTOTAL 0.000 0.000 0.696 0.752 0.638 0.926 0.390 0.109 0.000 3.509 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS D 860.580 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 75.030 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-53

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.030 0.045 0.016 0.000 0.000 0.000 0.000 0.091 NNE 0.000 0.000 0.007 0.026 0.006 0.000 0.000 0.000 0.000 0.038 NE 0.000 0.000 0.002 0.014 0.050 0.000 0.000 0.000 0.000 0.066 ENE 0.000 0.006 0.010 0.005 0.025 0.000 0.000 0.000 0.000 0.046 E 0.000 0.000 0.076 0.085 0.000 0.000 0.000 0.000 0.000 0.161 ESE 0.000 0.003 0.173 0.122 0.035 0.000 0.000 0.000 0.000 0.333 SE 0.000 0.009 0.077 0.033 0.000 0.000 0.000 0.000 0.000 0.119 SSE 0.000 0.002 0.103 0.000 0.000 0.000 0.000 0.000 0.000 0.105 S 0.000 0.012 0.250 0.108 0.275 0.091 -0.000 0.000 0.000 0.737 SSW 0.000 0.000 0.345 0.656 0.074 0.094 0.047 0.000 0.000 1.215 SW 0.000 0.000 0.054 0.013 0.000 0.000 0.000 0.000 0.000 0.067 WSW 0.000 0.002 0.034 0.043 0.008 0.000 0.000 0.000 0.000 0.087 W 0.000 0.000 0.036 0.033 0.024 0.008 0.000 0.000 0.000 0.101 WNW 0.000 0.000 0.002 0.004 0.007 0.005 0.000 0.000 0.000 0.018 NW 0.000 0.002 0.000 0.000 0.000 0.000 0.037 0.000 0.000 0.039 NNW 0.000 0.000 0.011 0.046 0.012 0.025 0.000 0.000 0.000 0.094 SUBTOTAL 0.000 0.036 1.210 1.234 0.531 0.222 0.084 0.000 0.000 3.317 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS. OF STABILITY CLASS E 624.910 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 70.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-54

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.014 0.088 0.029 0.000 0.000 0.000 0.000 0.000 0.131 NNE 0.000 0.009 0.024 0.047 0.000 0.000 0.000 0.000 0.000 0.080 NE 0.000 0.024 0.014 0.007 0.014 0.000 0.000 0.000 0.000 0.060 ENE 0.000 0.045 0.053 0.031 0.014 0.000 0.000 0.000 0.000 0.144 E 0.001 0.058 0.160 0.023 0. 0o0 0.000 0.000 0.000 0.000 0.242 ESE 0.000 0.046 0.163 0.000 0.000 0.000 0.000 0.000 0.000 0.210 SE 0.000 0.014 0.088 0.000 0.000 0.000 0.000 0.000 0.000 0.102 SSE 0.000 0.007 0.022 0.000 0.000 0.000 0.000 0.000 0.000 0.029 S 0.001 0.013 0.271 0.078 0.266 0.000 0.000 0.000 0.000 0.628 SSW 0.000 0.019 0.164 0.019 0.016 0.039 0.000 0.000 0.000 0.257 SW 0.000 0.000 0.019 0.000 0.000 0.000 0.000 0.000 0.000 0.019 WSW 0.000 0.000 0.031 0.000 0.000 0.000 0.000 0.000 0.000 0.031 W 0.000 0.007 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.012 WNW 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.009 NW 0.000 0.007 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.015 NNW 0.000 0.000 0.034 0.007 0.000 0.000 0.000 0.000 0.000 0.042 SUBTOTAL 0.003 0.273 1.139 0.246 0.311 0.039 0.000 0.000 0.000 2.010 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS F 393.060 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 42.980 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-55

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24. 5 TOTAL N 0.001 0.006 0.074 0.019 0.000 0.000 0.000 0.000 0.000 0.100 NNE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.008 NE 0.000 0.022 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.029 ENE 0.001 0.070 0.022 0.006 0.000 0.000 0.000 0.000 0.000 0.099 E 0.001 0.036 0.052 0.002 0.000 0.000 0.000 0.000 0.000 0.092 ESE 0.001 0.039 0.010 0.000 0.000 0.000 0.000 0.000 0.000 0.050 SE 0.000 0.032 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.036 SSE 0.001 0.029 0.073 0.000 0.000 0.000 0.000 0.000 0.000 0.103 S 0.001 0.019 0.076 0.049 0.000 0.000 0.000 0.000 0.000 0.145 SSW 0.001 0.014 0.023 0.000 0.000 0.000 0.000 0.000 0.000 0.038 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 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.009 NW 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.001 NNW 0.000 0.001 0.010 0.007 0.000 0.000 0.000 0.000 0.000 0.018 SUBTOTAL 0.009 0.278 0.359 0.083 0.000 0.000 0.000 0.000 0.000 0.729 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF GROUND LEVEL RELEASE 248.640 TOTAL HOURS OF STABILITY CLASS G 75.010 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 15.590 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-56

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 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 0.042 0.000 0.000 0.000 0.042 SSE 0.000 0.000 0.000 0.000 0.088 0.085 0.000 0.000 0.000 0.174 S 0.000 0.000 0.000 0.000 0.000 0.000 0.037 0.000 0.000 0.037 SSW 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 SW 0.000 0.000 0.000 0.000 0.134 0.083 0.000 0.000 0.000 0.217 WSW 0.000 0.000 0.000 0.000 0.043 0.041 0.000 0.000 0.000 0.085 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 0.266 0.290 0.037 0.000 0.000 0.594 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS A 32.540 TOTAL HOURS OF ELEVATED STABILITY CLASS A 12.690 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-57

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24. 5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.040 0.000 0.000 0.000 0.040 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 0.093 0.000 0.000 0.000 0.000 0.093 SE 0.000 0.000 0.000 0.047 0.000 0.042 0.000 0.000 0.000 0.089 SSE 0.000 0.000 0.000 0.000 0.000 0.124 0.000 0.000 0.000 0.124 S 0.000 0.000 0.000 0.000 0.046 0.166 0.037 0.034 0.000 0.283 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 0.000 0.288 0.000 0.000 0.000 0.288 WSW 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 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 0.042 0.000 0.037 0.000 0.079 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 0.186 0.742 0.037 0.071 0.000 1.083 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS B 34.990 TOTAL HOURS OF ELEVATED STABILITY CLASS B 23.160 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-58

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24. 5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.161 0.078 0.000 0.000 0.239 NNE 0.000 0.000 0.000 0.000 0.092 0.334 0.000 0.000 0.000 0.427 NE 0.000 0.000 0.000 0.000 0.000 0.081 0.000 0.000 0.000 0.081 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 0.045 0.043 0.000 0.000 0.000 0.088 SE 0.000 0.000 0.000 0.140 0.136 0.041 0.038 0.000 0.000 0.355 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.077 0.000 0.000 0.077 S 0.000 0.000 0.000 0.140 0.046 0.166 0.193 0.104 0.000 0. 649 SSW 0.000 0.000 0.000 0.140 0.000 0.161 0.038 0.000 0.000 0.340 SW 0.000 0.000 0.000 0.187 0.044 0.165 0.000 0.000 0.000 0.396 WSW 0.000 0.000 0.000 0.047 0.045 0.245 0.268 0.000 0.000 0.605 W 0.000 0.000 0.000 0.047 0.270 0.124 0.075 0.000 0.000 0.516 WNW 0.000 0.000 0.000 0.000 0.090 0.083 0.267 0.000 0.000 0.441 NW 0.000 0.000 0.000 0.000 0.088 0.120 0.076 0.066 0.000 0.350 NNW 0.000 0.000 0.000 0.000 0.000 0.167 0.155 0.000 0.000 0.321 SUBTOTAL 0.000 0.000 0.000 0.702 0.857 1.891 1.266 0.171 0.000 4.886 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURq OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS C 116.910 TOTAL HOURS OF ELEVATED STABILITY CLASS C 104.470 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-59

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.094 0.181 1.061 0.077 0.000 0.009 1.421 NNE 0.000 0.000 0.140 0.140 0.402 0.413 0.116 0.000 0.000 1.212 NE 0.000 0.000 0.047 0.140 0.229 0.080 0.076 0.000 0.000 0.572 ENE 0.000 0.000 0.094 0.094 0.088 0.042 0.000 0.000 0.000 0.317 E 0.000 0.000 0.047 0.000 0.044 0.042 0.000 0.000 0.000 0.132 ESE 0.000 0.094 0.047 0.421 0.361 0.169 0.188 0.000 0.000 1.279 SE 0.000 0.047 0.281 0.842 0.406 0.450 0.191 0.094 0.000 2.309 SSE 0.000 0.000 0.374 0.094 0.540 1.176 0.574 0.150 0.000 2.908 S 0.000 0.047 0.327 0.561 0.583 1.223 1.600 0.651 0.000 4.992 SSW 0.000 0.047 0.421 0.655 0.449 1. 630 0.802 0.130 0.000 4.133 SW 0.000 0.000 0.374 0.702 0.958 0.905 0.189 0.000 0.000 3.128 WSW 0.000 0 .000 0.421 0.655 0.446 0.569 0.230 0.033 0.000 2.354 W 0.000 0.000 0.187 0.468 0.366 1.187 0.344 0.000 0.000 2.551 WNW 0.000 0.000 0.000 0.374 0.626 1.384 1.182 0.131 0.000 3.698 NW 0.000 0.000 0.094 0.374 0.316 1.143 1. 605 0.156 0.020 3.708 NNW 0.000 0.000 0.047 0.140 0.446 1.140 0.230 0.024 0.000 2.027 SUBTOTAL 0.000 0.234 2.900 5.753 6.441 12.614 7.404 1.368 0.029 36.742 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS D 860.580 TOTAL HOURS OF ELEVATED STABILITY CLASS D 785.550 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-60

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.047 0.094 0.358 0.371 0.038 0.000 0.000 0. 908 NNE 0.000 0.000 0.234 0.094 0.271 0.246 0.038 0.000 0.000 0.883 NE 0.000 0.000 0.000 0.140 0.271 0.201 0.039 0.000 0.000 0. 651 ENE 0.000 0.000 0.187 0.047 0.000 0.082 0.000 0.000 0.000 0.316 E 0.000 0.000 0.000 0.047 0.089 0.371 0.000 0.000 0.000 0.507 ESE 0.000 0.000 0.000 0.047 0.182 0.410 0.077 0.000 0.000 0.715 SE 0.000 0.000 0.094 0.327 0.487 2.062 0.384 0.085 0.000 3.438 SSE 0.000 0.000 0.000 0.421 0.451 1.278 0.951 0.318 0.009 3.428 S 0.000 0.000 0.187 0.374 0.493 1.307 2.086 0.772 0.048 5.268 SSW 0.000 0.000 0.374 0.935 0.492 1.305 0.762 0.264 0.008 4.141 SW 0.000 0.000 0.327 0.608 0.492 0.501 0.078 0.000 0.000 2.007 WSW 0.000 0.000 0.187 0.140 0.316 0.376 0.038 0.000 0.000 1.058 W 0.000 0.000 0.047 0.094 0.357 0.415 0.039 0.019 0.000 0.971 WNW 0.000 0.000 0.047 0.140 0.045 0.000 0.000 0.000 0.000 0.232 NW 0.000 0.000 0.000 0.047 0.093 0.291 0.037 0.012 0.000 0.480 NNW 0.000 0.000 0.094 0.234 0.137 0.409 0.037 0.000 0.000 0.910 SUBTOTAL 0.000 0.000 1.824 3.789 4.535 9.625 4.603 1.471 0.065 25.912 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS E 624.910 TOTAL HOURS OF ELEVATED STABILITY CLASS E 553.990 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-61

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.140 0.047 0.543 0.000 0.000 0.000 0.730 NNE 0.000 0.000 0.094 0.234 0.180 0.833 0.000 0.000 0.000 1.341 NE 0.000 0.000 0.140 0.187 0.045 0.245 0.039 0.000 0.000 0.656 ENE 0.000 0.000 0.140 0.140 0.000 0.448 0.000 0.000 0.000 0.729 E 0.000 0.047 0.047 0.047 0.044 0.328 0.000 0.000 0.000 0.513 ESE 0.000 0.000 0.094 0.281 0.271 0.541 0.000 0.000 0.000 1.187 SE 0.000 0.000 0.094 0.281 0.991 1.161 0.038 0.000 0.000 2.564 SSE 0.000 0.000 0.187 0.140 0.406 0.691 0.495 0.037 0.000 1.956 S 0.000 0.000 0.094 0.187 0.538 1.515 0.569 0.104 0.000 3.007 SSW 0.000 0.000 0.187 0.281 0.355 0.456 0.000 0.000 0.000 1.278 SW 0.000 0.000 0.094 0.374 0.046 0.042 0.000 0.000 0.000 0.555 WSW 0.000 0.047 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.187 W 0.000 0.047 0.094 0.047 0.000 0.042 0.039 0.000 0.000 0.268 WNW 0.000 0.000 0.094 0.000 0.045 0.000 0.000 0.000 0.000 0.139 NW 0.000 0.000 0.047 0.187 0.137 0.000 0.000 0.000 0.000 0.371 NNW 0.000 0.000 0.047 0.234 0.452 0.161 0.000 0.000 0.000 0.894 SUBTOTAL 0.000 0.140 1.543 2.806 3.558 7.006 1.179 0.141 0.000 16.374 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS F 393.060 TOTAL HOURS OF ELEVATED STABILITY CLASS F 350.080 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-62

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE APRIL 1, 2011 - JUNE 30, 2011 WIND IWIND 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 Ž24 .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 0.047 0.000 0.043 0.247 0.000 0.000 0.000 0.337 NE 0.000 0.000 0.000 0.094 0.134 0.247 0.000 0.000 0.000 0.475 ENE 0.000 0.000 0.000 0.094 0.270 0.041 0.000 0.000 0.000 0.405 E 0.000 0.000 0.000 0.047 0.090 0.000 0.000 0.000 0.000 0.137 ESE 0.000 0.000 0.000 0.047 0.091 0.000 0.000 0.000 0.000 0.138 SE 0.000 0.000 0.047 0.047 0.044 0.251 0.000 0.000 0.000 0.388 SSE 0.000 0.000 0.047 0.047 0.046 0.081 0.000 0.000 0.000 0.221 S 0.000 0.000 0.000 0.000 0.000 0.081 0.000 0.000 0.000 0.081 SSW 0.000 0.000 0.047 0.047 0.000 0.041 0.000 0.000 0.000 0.134 SW 0.000 0.000 0.094 0.047 0.000 0.000 0.000 0.000 0.000 0.140 WSW 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.000 0.000 0.094 W 0.000 0.000 0.047 0.000 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 0.047 0.047 0.044 0.000 0.000 0.000 0.000 0.138 SUBTOTAL 0.000 0.000 0.468 0.514 0.809 0.988 0.000 0.000 0.000 2.779 TOTAL HOURS OF VALID OBSERVATIONS 2138.000 TOTAL HOURS OF ELEVATED RELEASES 1889.360 TOTAL HOURS OF STABILITY CLASS G 75.010 TOTAL HOURS OF ELEVATED STABILITY CLASS G 59.420 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-63

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 7 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

THIRD QUARTER E2-64

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 0.010 0.166 0.000 0.000 0.000 0.177 NNE 0.000 0.000 0.000 0.003 0.007 0.075 0.000 0.000 0.000 0.084 NE 0.000 0.000 0.000 0.000 0.004 0.005 0.000 0.000 0.000 0.010 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 0.004 0.005 0.000 0.000 0.000 0.000 0.009 ESE 0.000 0.000 0.000 0.039 0.080 0.000 0.000 0.000 0.000 0.119 SE 0.000 0.000 0.026 0.136 0.008 0.000 0.000 0.000 0.000 0.170 SSE 0.000 0.000 0.051 0.021 0.000 0.000 0.000 0.000 0.000 0.072 S 0.000 0.000 0.058 0.023 0.000 0.000 0.000 0.000 0.000 0.081 SSW 0.000 0.000 0.024 0.007 0.000 0.000 0.000 0.000 0.000 0.031 SW 0.000 0.000 0.002 0.005 0.000 0.000 0.000 0.000 0.000 0.007 WSW 0.000 0.000 0.000 0.005 0.009 0.000 0.000 0.000 0.000 0.014 W 0.000 0.000 0.000 0.013 0.022 0.032 0.000 0.000 0.000 0.067 WNW 0.000 0.000 0.000 0.000 0.004 0.036 0.000 0.000 0.000 0.040 NW 0.000 0.000 0.000 0.002 0.000 0.009 0.072 0.000 0.000 0.083 NNW 0.000 0.000 0.000 0.000 0.008 0.030 0.065 0.000 0.000 0.104 SUBTOTAL 0.000 0.000 0.161 0.259 0.157 0.354 0.136 0.000 0.000 1.067 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS A 67.780 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 22.060 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-65

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.000 0.018 0.066 0.000 0.000 0.000 0.085 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 0.006 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 0.008 0.030 0.000 0.000 0.000 0.000 0.039 SE 0.000 0.000 0.005 0.001 0.000 0.000 0.000 0.000 0.000 0.007 SSE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 S 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 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 0.004 0.000 0.000 0.000 0.000 0.000 0.004 W 0.000 0.000 0.000 0.008 0.028 0.007 0.000 0.000 0.000 0.043 WNW 0.000 0.000 0.000 0.001 0.008 0.016 0.010 0.000 0.000 0.035 NW 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 NNW 0.000 0.000 0.000 0.000 0.008 0.009 0.015 0.000 0.000 0.032 SUBTOTAL 0.000 0.000 0.014 0.023 0.104 0.112 0.025 0.000 0.000 0.279 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS B 63.930 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 5.760 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-66

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.005 0.017 0.065 0.000 0.000 0.000 0.087 NNE 0.000 0.000 0.000 0.0-00 0.012 0.010 0.000 0.000 0.000 0.022 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 0.003 0.006 0.000 0.000 0.000 0.000 0.009 ESE 0.000 0.000 0.000 0.020 0.015 0.000 0.000 0.000 0.000 0.035 SE 0.000 0.000 0.008 0.013 0.000 0.000 0.000 0.000 0.000 0.020 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 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 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 0.001 0.029 0.000 0.000 0.000 0.000 0.030 WNW 0.000 0.000 0.000 0.001 0.011 0.049 0.019 0.000 0.000 0.080 NW 0.000 0.000 0.000 0.002 0.016 0.007 0.022 0.000 0.000 0.047 NNW 0.000 0.000 0.000 0.000 0.014 0.027 0.017 0.000 0.000 0.058 SUBTOTAL 0.000 0.000 0.014 0.049 0.125 0.158 0.058 0.000 0.000 0.403 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS C 112.740 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.340 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-67

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.036 0.031 0.037 0.000 0.000 0.000 0.104 NNE 0.000 0.000 0.000 0.003 0.069 0.068 0.000 0.000 0.000 0.139 NE 0.000 0.000 0.000 0.001 0.021 0.012 0.000 0.000 0.000 0.033 ENE 0.000 0.000 0.000 0.010 0.008 0.000 0.000 0.000 0.000 0.018 E 0.000 0.000 0.000 0.024 0.052 0.009 0.000 0.000 0.000 0.085 ESE 0.000 0.000 0.027 0.233 0.133 0.000 0.000 0.000 0.000 0.392 SE 0.000 0.000 0.028 0.010 0.000 0.009 0.000 0.000 0.000 0.046 SSE 0.000 0.005 0.024 0.000 0.000 0.000 0.000 0.000 0.000 0.029 S 0.000 0.000 0.058 0.034 0.000 0.000 0.000 0.000 0.000 0.092 SSW 0.000 0.000 0.038 0.028 0.000 0.000 0.000 0.000 0.000 0.066 SW 0.000 0.000 0.020 0.000 0.000 0.000 0.000 0.000 0.000 0.020 WSW 0.000 0.000 0.005 0.044 0.006 0.000 0.000 0.000 0.000 0.055 W 0.000 0.000 0.000 0.043 0.057 0.008 0.000 0.000 0.000 0.108 WNW 0.000 0.000 0.000 0.007 0.039 0.031 0.000 0.000 0.000 0.077 NW 0.000 0.000 0.000 0.002 0.059 0.119 0.100 0.000 0.000 0.279 NNW 0.000 0.000 0.000 0.016 0.024 0.189 0.010 0.000 0.000 0.240 SUBTOTAL 0.000 0.005 0.200 0.490 0.498 0.482 0.110 0.000 0.000 1.786 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS D 808.120 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 36.920 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-68

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 18.5-24.4 224.5 TOTAL N 0.000 0.000 0.034 0.081 0.007 0.000 0.000 0.000 0.000 0.123 NNE 0.000 0.000 0.012 0.029 0.005 0.000 0.000 0.000 0.000 0.046 NE 0.000 0.003 0.007 0.013 0.020 0.014 0.000 0.000 0.000 0.058 ENE 0.000 0.000 0.020 0.035 0.027 0.000 0.021 0.000 0.000 0.102 E 0.000 0.000 0.082 0.147 0.029 0.000 0.000 0.000 0.000 0.258 ESE 0.000 0.006 0.044 0.111 0.065 0.000 0.000 0.000 0.000 0.226 SE 0.000 0.005 0.034 0.002 0.000 0.000 0.000 0.000 0.000 0.041 SSE 0.000 0.000 0.014 0.000 0.000 0.000 0.000 0.000 0.000 0.014 S 0.000 0.000 0.079 0.000 0.000 0.000 0.000 0.000 0.000 0.079 SSW 0.000 0.006 0.036 0.040 0.021 0.000 0.000 0.000 0.000 0.104 SW 0.000 0.000 0.014 0.010 0.000 0.000 0.000 0.000 0.000 0.024 WSW 0.000 0.000 0.024 0.043 0.000 0.000 0.000 0.000 0.000 0.067 W 0.000 0.000 0.023 0.077 0.034 0.000 0.000 0.000 0.000 0.134 WNW 0.000 0.000 0.000 0.014 0.007 0.000 0.000 0.000 0.000 0.021 NW 0.000 0.000 0.000 0.015 0.012 0.000 0.000 0.000 0.000 0.028 NNW 0.000 0.000 0.011 0.021 0.072 0.034 0.000 0.000 0.000 0.138 SUBTOTAL 0.000 0.021 0.434 0.638 0.299 0.048 0.021 0.000 0.000 1.462 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS E 564.400 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 30.220 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-69

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 18.5-24.4 224.5 TOTAL N 0. 000 0.000 0.219 0.142 0.009 0.000 0.000 0.000 0.000 0.370 NNE 0.000 0.000 0.024 0.048 0.000 0.000 0.000 0.000 0.000 0.072 NE 0.000 0.010 0.020 0.009 0.024 0.000 0.046 0.000 0.000 0.109 ENE 0.000 0.000 0.034 0.017 0.000 0.000 0.000 0.000 0.000 0.052 E 0.000 0.006 0.102 0.057 0.000 0.008 0.000 0.000 0.000 0.172 ESE 0.000 0.000 0.022 0.007 0.000 0.000 0.000 0.000 0.000 0.030 SE 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.005 SSE 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.002 S 0.000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005 SSW 0.000 0.000 0.027 0.000 0.000 0.000 0.000 0.000 0.000 0.027 SW 0.000 0.000 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 WSW 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.009 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 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.029 0.033 0.033 0.000 0.000 0.000 0.000 0.096 SUBTOTAL 0.000 0.031 0.488 0.313 0.066 0.008 0.046 0.000 0.000 0.953 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS F 333.640 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 19.690 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-70

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.008 0.104 0.046 0.000 0.000 0.000 0.000 0.000 0.158 NNE 0.000 0.004 0.024 0.014 0.000 0.000 0.000 0.000 0.000 0.042 NE 0.000 0.003 0.009 0.007 0.000 0.000 0.000 0.000 0.000 0.019 ENE 0.000 0.013 0.030 0.000 0.000 0.000 0.000 0.000 0.000 0.042 E 0.000 0.000 0.036 0.013 0.000 0.000 0.000 0.000 0.000 0.049 ESE 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.007 SE 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 002 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 0.003 0.000 0.000 0.000 0.000 0.000 0.000 0.003 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.002 0.049 0.014 0.000 0.000 0.000 0.000 0.000 0.066 SUBTOTAL 0.000 0.033 0.254 0.101 0.000 0.000 0.000 0.000 0.000 0.389 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF GROUND LEVEL RELEASE 131.030 TOTAL HOURS OF STABILITY CLASS G 116.390 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 8.040 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-71

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 18.5-24.4 224 .5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.320 0.000 0.000 0. 320 NNE 0.000 0.000 0.000 0.000 0.000 0.041 0.000 0.000 0.000 0.041 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 0.043 0.000 0.000 0.000 0.043 SE 0.000 0.000 0.000 0.000 0.137 0.373 0.039 0.000 0.000 0.550 SSE 0.000 0.000 0.000 0.000 0.470 0.345 0.000 0.000 0.000 0.816 S 0.000 0.000 0.000 0.000 0.139 0.171 0.000 0.000 0.000 0.311 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 0.045 0.088 0.000 0.000 0.000 0.133 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 0.792 1.061 0.359 0.000 0.000 2.212 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS A 67.780 TOTAL HOURS OF ELEVATED STABILITY CLASS A 45.720 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-72

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.128 0.080 0.000 0.000 0.256 NNE 0.000 0.000 0.000 0.000 0.091 0.126 0.000 0.000 0.000 0.218 NE 0.000 0.000 0.000 0.000 0.048 0.045 0.000 0.000 0.000 0.092 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 0.097 0.469 0.296 0.161 0.000 0.000 1.023 SSE 0.000 0.000 0.000 0.242 0.046 0.043 0.000 0.000 0.000 0.331 S 0.000 0.000 0.000 0.000 0.186 0.088 0.000 0.000 0.000 0.274 SSW 0.000 0.000 0.000 0.000 0.045 0.043 0.000 0.000 0.000 0.089 SW 0.000 0.000 0.000 0.000 0.047 0.000 0.040 0.000 0.000 0.087 WSW 0.000 0.000 0.000 0.097 0.095 0.000 0.000 0.000 0.000 0.192 W 0.000 0.000 0.000 0.000 0.045 0.041 0.000 0.000 0.000 0.087 WNW 0.000 0.000 0.000 0.000 0.000 0.042 0.000 0.000 0.000 0.042 NW 0.000 0.000 0.000 0.000 0.000 0.041 0.039 0.000 0.000 0.080 NNW 0.000 0.000 0.000 0.000 0.000 0.045 0.000 0.000 0.000 0.045 SUBTOTAL 0.000 0.000 0.000 0.435 1.121 0.937 0.320 0.000 0.000 2.814 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS B 63.930 TOTAL HOURS OF ELEVATED STABILITY CLASS B 58.170 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-73

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24. 5 TOTAL N 0.000 0.000 0.000 0.048 0.000 0.253 0.040 0.000 0.000 0.342 NNE 0.000 0.000 0.000 0.000 0.045 0.125 0.000 0.000 0.000 0.170 NE 0.000 0.000 0.000 0.000 0.000 0.086 0.000 0.000 0.000 0.086 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 0.171 0.000 0.000 0.000 0.171 SE 0.000 0.000 0.000 0.290 0.327 0.298 0.160 0.000 0.000 1.075 SSE 0.000 0.000 0.048 0.435 0.046 0.130 0.000 0.000 0.000 0.659 S 0.000 0.000 0.048 0.242 0.140 0.043 0.000 0.000 0.000 0.473 SSW 0.000 0.000 0.000 0.242 0.094 0.000 0.000 0.000 0.000 0.336 SW 0.000 0.000 0.000 0.145 0.090 0.000 0.000 0.000 0.000 0.236 WSW 0.000 0.000 0.000 0.242 0.048 0.044 0.000 0.000 0.000 0.334 W 0.000 0.000 0.000 0.000 0.048 0.303 0.000 0.000 0.000 0.351 WNW 0.000 0.000 0.000 0.048 0.000 0.215 0.039 0.000 0.000 0.302 NW 0.000 0.000 0.000 0.000 0.046 0.000 0.077 0.000 0.000 0.123 NNW 0.000 0.000 0.000 0.000 0.000 0.129 0.234 0.030 0.000 0.393 SUBTOTAL 0.000 0.000 0.097 1.693 0.886 1.795 0.549 0.030 0.000 5.051 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS C 112.740 TOTAL HOURS OF ELEVATED STABILITY CLASS C 104.400 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-74

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.145 0.339 0.556 0.719 0.314 0.139 0.000 2.213 NNE 0.000 0.000 0.097 0.290 0.373 0.595 0.275 0.188 0.000 1.818 NE 0.000 0.000 0.145 0.242 0.093 0.380 0.000 0.000 0.000 0.860 ENE 0.000 0.000 0.242 0.097 0.045 0.086 0.000 0.000 0.000 0.470 E 0.000 0.000 0.048 0.290 0.092 0.170 0.039 0.000 0.000 0.640 ESE 0.000 0.000 0.145 0.290 0.141 0.811 0.000 0.000 0.000 1.388 SE 0.000 0.000 0.339 0.871 0.793 1.267 0.787 0.139 0.000 4.196 SSE 0.000 0.000 1.161 1.209 0.278 0.427 0.468 0.115 0.000 3.658 S 0.000 0.000 0.919 1.306 0.604 0.645 0.078 0.063 0.000 3.616 SSW 0.000 0.048 0.774 1.161 0.328 0.342 0.117 0.114 0.000 2.884 SW 0.000 0.000 0.822 0.919 0.428 0.175 0.000 0.000 0.000 2.344 WSW 0.000 0.000 0.532 1.064 0.472 0.216 0.000 0.000 0.000 2.284 W 0.000 0.000 0.242 1.306 1.296 0.911 0.040 0.000 0.000 3.796 WNW 0.000 0.000 0.048 0.435 0.659 0.892 0.118 0.000 0.000 2. 153 NW 0.000 0.000 0.000 0.532 0.651 0.783 0.276 0.000 0.000 2.241 NNW 0.000 0.000 0.000 0.387 0.277 0.842 0.904 0.338 0.000 2.748 SUBTOTAL 0.000 0.048 5.660 10.740 7.088 9.261 3.417 1.096 0.000 37.310 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS D 808.120 TOTAL HOURS OF ELEVATED STABILITY CLASS D 771.200 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-75

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.048 0.290 0.290 0.374 0.893 0.079 0.000 0.000 1.975 NNE 0.000 0.000 0.145 0.387 0.187 0.516 0.000 0.000 0.000 1.236 NE 0.000 0.000 0.484 0.194 0.184 0.259 0.000 0.000 0.000 1.120 ENE 0.000 0.000 0.000 0.290 0.189 0.306 0.000 0.028 0.000 0.813 E 0.000 0.000 0.242 0.242 0.274 0.473 0.000 0.000 0.000 1.231 ESE 0.000 0.000 0.145 0.581 0.604 0. 903 0.040 0.000 0.000 2.272 SE 0.000 0.000 0.387 0.290 0.420 0.718 0.358 0.000 0.000 2.173 SSE '0.000 0.000 0.242 0.726 0.325 0.567 0.078 0.000 0.000 1.938 S 0.000 0.000 0.387 0.919 0.744 0.473 0.196 0.057 0.000 2.776 SSW 0.000 0.000 0.484 0.435 0.280 0.214 0.119 0.000 0.000 1.532 SW 0.000 0.000 0.290 0.774 0.095 0.086 0.000 0.000 0.000 1.245 WSW 0.000 0.000 0.242 0.484 0.236 0.174 0.000 0.000 0.000 1.135 W 0.000 0.000 0.290 0.919 1.061 0.916 0.039 0.000 0.000 3.226 WNW 0.000 0.000 0.097 0.435 0.372 0.216 0.000 0.000 0.000 1.120 NW 0.000 0.000 0.097 0.097 0.282 0.132 0.000 0.000 0.000 0.607 NNW 00.000 0.000 0.097 0.435 0.048 0.506 0.358 0.000 0.000 1.445 SUBTOTAL 0.000 0.048 3.919 7.499 5.674 7.351 1.268 0.085 0.000 25.843 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS E 564.400 TOTAL HOURS OF ELEVATED STABILITY CLASS E 534.180 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-76

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 18.5-24.4 224. 5 TOTAL N 0.000 0.000 0.000 0.145 0.370 1.059 0.321 0.000 0.000 1.895 NNE 0.000 0.000 0.145 0.194 0.280 1.233 0.120 0.000 0.000 1.971 NE 0.000 0.000 0.145 0.290 0.507 0.170 0.040 0.000 0.002 1.155 ENE 0.000 0.000 0.194 0.339 0.280 0.087 0.040 0.000 0.000 0.939 E 0.000 0.000 0.000 0.242 0.324 0.306 0.000 0.000 0.000 0.872 ESE 0.000 0.000 0.145 0.484 0.421 0.563 0.000 0.000 0.000 1.612 SE 0.000 0.048 0.145 0.339 0.377 0.431 0.000 0.000 0.000 1.340 SSE 0.000 0.000 0.290 0.339 0.232 0.217 0.000 0.000 0.000 1.077 S 0.000 0.000 0.339 0.194 0.000 0.087 0.000 0.000 0.000 0.619 SSW 0.000 0.048 0.339 0.048 0.000 0.000 0.000 0.000 0.000 0.435 SW 0.000 0.048 0.194 0.339 0.048 0.000 0.000 0.000 0.000 0.628 WSW 0.000 0.000 0.097 0.387 0.045 0.000 0.000 0.000 0.000 0.529 W 0.000 0.000 0.242 0.097 0.094 0.043 0.000 0.000 0.000 0.476 WNW 0.000 0.000 0.242 0.242 0.048 0.000 0.000 0.000 0.000 0.532 NW 0.000 0.000 0.097 0.048 0.047 0.000 0.000 0.000 0.000 0.192 NNW 0.000 0.000 0.000 0.194 0.139 0.504 0.080 0.000 0.000 0.916 SUBTOTAL 0.000 0.145 2.612 3.919 3.211 4.698 0.601 0.000 0.002 15.189 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS F 333.640 TOTAL HOURS OF ELEVATED STABILITY CLASS F 313.950 METEOROLOGICAL FACILITY: -BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-77

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.047 NNE 0.000 0.048 0.000 0.000 0.188 0.262 0.040 0.000 0.000 0.538 NE 0.000 0.048 0.000 0.048 0.472 0.431 0.000 0.000 0.000 1.000 ENE 0.000 0.000 0.048 0.048 0.184 0.172 0.000 0.000 0.000 0.452 E 0.000 0.048 0.097 0.000 0.000 0.085 0.000 0.000 0.000 0.230 ESE 0.000 0.000 0.048 0.097 0.093 0.000 0.000 0.000 0.000 0.238 SE 0.000 0.000 0.145 0.194 0.325 0.044 0.000 0.000 0.000 0.708 SSE 0.000 0.000 0.194 0.290 0.047 0.000 0.000 0.000 0.000 0.531 S 0.000 0.048 0.290 0.097 0.048 0.000 0.000 0.000 0.000 0.484 SSW 0.000 0.000 0.097 0.145 0.000 0.000 0.000 0.000 0.000 0.242 SW 0.000 0.000 0.145 0.048 0.000 0A000 0.000 0.000 0.000 0.194 WSW 0.000 0.000 0.097 0.000 0.000 0.000 0.000 0.000 0.000 0.097 W 0.000 0.000 0.097 0.048 0.000 0.000 0.000 0.000 0.000 0.145 WNW 0.000 0.048 0.097 0.048 0.000 0.000 0.000 0.000 0.000 0.194 NW 0.000 0.000 0.000 0.000 0.094 0.000 0.000 0.000 0.000 0.094 NNW 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.000 0.048 SUBTOTAL 0.000 0.242 1.403 1.064 1.499 0.993 0.040 0.000 0.000 5.242 TOTAL HOURS OF VALID OBSERVATIONS 2067.000 TOTAL HOURS OF ELEVATED RELEASES 1935.970 TOTAL HOURS OF STABILITY CLASS G 116.390 TOTAL HOURS OF ELEVATED STABILITY CLASS G 108.350 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-78

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 8 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR SPLIT LEVEL RELEASES (GROUND LEVEL RELEASE MODE AND ELEVATED RELEASE MODE)

FOURTH QUARTER E2-79

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 18.5-24.4 224 .5 TOTAL N 0.000 0.000 0.000 0.000 0.005 0.028 0.000 0.000 0.000 0.032 NNE 0.000 0.000 0.000 0.000 0.000 0.023 0.000 0.000 0.000 0.023 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 0.005 0.000 0.000 0.000 0.000 0.005 ESE 0.000 0.000 0.000 0.016 0.040 0.000 0.000 0.000 0.000 0.056 SE 0.000 0.000 0. 022 0.090 0.024 0.000 0.000 0.000 0.000 0.136 SSE 0.000 0.000 0.087 0.071 0.000 0.000 0.000 0.000 0.000 0.158 S 0.000 0.000 0.000 0.075 0.000 0.000 0.000 0.000 0.000 0.075 SSW 0.000 0.000 0.012 0.076 0.000 0.000 0.000 0.000 0.000 0.088 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 0.011 0.006 0.000 0.000 0.000 0.000 0.018 W 0.000 0.000 0.000 0.000 0.000 0.031 0.000 0.000 0.000 0.031 WNW 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.006 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 0.056 0.000 0.000 0.000 0.056 SUBTOTAL 0.000 0.000 0.122 0.340 0.080 0.144 0.000 0.000 0.000 0.686 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS A 26.670 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 15.050 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-80

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.006 0.043 0.000 0.000 0.000 0.049 NNE 0.000 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.009 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 0.017 0.007 0.009 0.000 0.000 0.000 0.034 SE 0.000 0.000 0.000 0.006 0.015 0.000 0.000 0.000 0.000 0.022 SSE 0.000 0.000 0.007 0.010 0.000 0.000 0.000 0.000 0.000 0.016 S 0.000 0.000 0.014 0.024 0.000 0.000 0.000 0.000 0.000 0.037 SSW 0.000 0.000 0.000 0.000 0.017 0.000 0.000 0.000 0.000 0.017 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 0.005 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.000 0.005 0.000 0.030 0.000 0.000 0.000 0.035 WNW 0.000 0.000 0.000 0.000 0.004 0.008 0.019 0.000 0.000 0.031 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 0.005 0.000 0.000 0.000 0.005 SUBTOTAL 0.000 0.000 0.021 0.067 0.050 0.104 0.019 0.000 0.000 0.260 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS B 33.690 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 5.700 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-81

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.008 0.021 0.000 0.000 0.000 0.029 NNE 0.000 0.000 0.000 0.000 0.004 0.006 0.000 0.000 0.000 0.010 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 0.006 0.000 0.000 0.000 0.006 E 0.000 0.000 0.000 0.004 0.007 0.000 0.000 0.000 0.000 0.011 ESE 0.000 0.000 0.007 0.012 0.007 0.000 0.000 0.000 0.000 0.026 SE 0.000 0.000 0.000 0.021 0.000 0.000 0.000 0.000 0.000 0.021 SSE 0.000 0.000 0.002 0.003 0.000 0.000 0.000 0.000 0.000 0.005 S 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.004 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 0.003 0.000 0.000 0.000 0.000 0.000 0.003 W 0.000 0.000 0.000 0.000 0.006 0.031 0.000 0.000 0.000 0.038 WNW 0.000 0.000 0.000 0.000 0.006 0.060 0.009 0.000 0.000 0.075 NW 0.000 0.000 0.000 0.000 0.004 0.033 0.000 0.000 0.000 0.037 NNW 0.000 0.000 0.000 0.000 0.004 0.035 0.009 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.010 0.047 0.051 0.193 0.018 0.000 0.000 0.318 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS C 62.570 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 6.980 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-82

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.018 0.123 0.189 0.000 0.000 0.000 0.330 NNE 0.000 0.000 0.000 0.019 0.107 0.116 0.000 0.000 0.000 0.242 NE 0.000 0.000 0.000 0.000 0.010 0.048 0.000 0.000 0.000 0.057 ENE 0.000 0.000 0.000 0.003 0.001 0.000 0.000 0.000 0.000 0.004 E 0.000 0.000 0.001 0.008 0.015 0.000 0.000 0.000 0.000 0.024 ESE 0.000 0.000 0.031 0.044 0.027 0.008 0.000 0.000 0.000 0.110 SE 0.000 0.000 0.021 0.076 0.036 0.000 0.000 0.000 0.000 0.133 SSE 0.000 0.000 0.070 0.109 0.000 0.013 0.000 0.000 0.000 0.193 S 0.000 0.000 0.077 0.108 0.127 0.036 0.000 0.000 0.000 0.347 SSW 0.000 0.000 0.022 0.067 0.017 0.186 0.000 0.000 0.000 0.292 SW 0.000 0.000 0.000 0.048 0.015 0.009 0.000 0.000 0.000 0.072 WSW 0.000 0.000 0.003 0.027 0.037 0.026 0.000 0.000 0.000 0.093 W 0.000 0.000 0.000 0.026 0.106 0.317 0.056 0.000 0.000 0.504 WNW 0.000 0.000 0.000 0.000 0.020 0.126 0.219 0.032 0.000 0.397 NW 0.000 0.000 0.000 0.000 0.070 0.327 0.334 0.000 0.000 0.732 NNW 0.000 0.000 0.000 0.010 0.134 0.321 0.018 0.000 0.000 0.484 SUBTOTAL 0.000 0.000 0.225 0.563 0.845 1.721 0.627 0.032 0.000 4.013 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS D 811.150 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 88.050 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-83

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.010 0.061 0.038 0.018 0.000 0.000 0.000 0.126 NNE 0.000 0.000 0.007 0.019 0.015 0.031 0.000 0.000 0.000 0.071 NE 0.000 0.000 0.000 0.015 0.006 0.000 0.000 0.000 0.000 0.021 ENE 0.000 0.000 0.018 0.036 0.000 0.000 0.000 0.000 0.000 0.055 E 0.000 0.000 0.056 0.092 0.000 0.000 0.000 0.000 0.000 0.148 ESE 0.000 0.000 0.088 0.125 0.088 0.018 0.000 0.000 0.000 0.320 SE 0.000 0.003 0.164 0.278 0.181 0.000 0.000 0.000 0.000 0. 627 SSE 0.000 0.000 0.316 0.243 0.000 0.000 0.000 0.000 0.000 0.560 S 0.000 0.000 0.217 0.685 0.454 0.038 0.000 0.000 0.000 1.393 SSW 0.000 0.000 0.036 0.076 0.052 0.040 0.000 0.000 0.000 0.204 SW 0.000 0.000 0.008 0.022 0.000 0.000 0.000 0.000 0.000 0.030 WSW 0.000 0.005 0.022 0.032 0.000 0.000 0.000 0.000 0.000 0.059 W 0.000 0.000 0.009 0.087 0.041 0.024 0.000 0.000 0.000 0.161 WNW 0.000 0.000 0.005 0.017 0.015 0.028 0.000 0.000 0.000 0.066 NW 0.000 0.000 0.000 0.029 0.053 0.063 0.028 0.000 0.000 0.173 NNW 0.000 0.000 0.002 0.028 0.052 0.049 0.010 0.000 0.000 0.141 SUBTOTAL 0.000 0.008 0.958 1.846 0.995 0.309 0.038 0.000 0.000 4.154 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS E 674.840 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS E 91.130 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-84

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.011 0.069 0.064 0.008 0.000 0.000 0.000 0.000 0.152 NNE 0.000 0.000 0.015 0.078 0.008 0.009 0.000 0.000 0.000 0.109 NE 0.000 0.000 0.025 0.045 0.000 0.000 0.000 0.000 0.000 0.070 ENE 0.000 0.021 0.059 0.062 0.008 0.000 0.000 0.000 0.000 0.150 E 0.000 0.007 0.152 0.107 0.000 0.000 0.000 0.000 0.000 0.266 ESE 0.000 0.014 0.152 0.026 0.000 0.000 0.000 0.000 0.000 0.193 SE 0.000 0.034 0.070 0.012 0.000 0.000 0.000 0.000 0.000 0.116 SSE 0.000 0.030 0.337 0.077 0.000 0.000 0.000 0.000 0.000 0.444 S 0.000 0.008 0. 392 0.552 0.113 0.000 0.000 0.000 0.000 1.064 SSW 0.000 0.000 0.018 0.015 0.000 0.000 0.000 0.000 0.000 0.033 SW 0.000 0.006 0.005 0.000 0.000 0.000 0.000 0.000 0.000 0.012 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 0.003 0.000 0.000 0.000 0.000 0.000 0.004 NW 0.000 0.000 0.014 0. 010 0.000 0.000 0.000 0.000 0.000 0.024 NNW 0.000 0.000 0.021 0.039 0.031 0.000 0.000 0.000 0.000 0.091 SUBTOTAL 0.000 0.132 1.329 1.091 0.167 0.009 0.000 0.000 0.000 2.728 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS F 384.990 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 59.860 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-85

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

BROWNS FERRY NUCLEAR PLANT GROUND LEVEL RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 18.5-24.4 224.5 TOTAL N 0.001 0.010 0.142 0.086 0.000 0.000 0.000 0.000 0.000 0.239 NNE 0.000 0.001 0.022 0.026 0.008 0.000 0.000 0.000 0.000 0.057 NE 0.000 0.021 0.026 0.019 0.000 0.000 0.000 0.000 0.000 0.066 ENE 0.001 0.041 0.082 0.011 0.000 0.000 0.000 0.000 0.000 0.134 E 0.000 0.013 0.060 0.000 0.000 0.000 0.000 0.000 0.000 0.074 ESE 0.000 0.000 0.022 0.000 0.000 0.000 0.000 0.000 0.000 0.022 SE 0.000 0.024 0.025 0.000 0.000 0.000 0.000 0.000 0.000 0.049 SSE 0.001 0.057 0.179 0.000 0.000 0.000 0.000 0.000 0.000 0.238 S 0.001 0.017 0.176 0.009 0.000 0.000 0.000 0.000 0.000 0.203 SSW 0.000 0.009 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.009 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 0.005 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.006 NNW 0.000 0.016 0.034 0.006 0.000 0.000 0.000 0.000 0.000 0.057 SUBTOTAL 0.005 0.214 0.768 0.157 0.008 0.000 0.000 0.000 0.000 1.153 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF GROUND LEVEL RELEASE 292.070 TOTAL HOURS OF STABILITY CLASS G 200.090 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 25.300 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-86

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 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 0.044 0.000 0.037 0.000 0.000 0.082 SSE 0.000 0.000 0.000 0.000 0.000 0.116 0.188 0.026 0.000 0.330 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 0.081 0.000 0.000 0.000 0.081 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 0.037 0.000 0.000 0.037 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 0.044 0.196 0.263 0.026 0.000 0.530 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS A 26.670 TOTAL HOURS OF ELEVATED STABILITY CLASS A 11.620 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-87

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.041 0.186 0.000 0.000 0.227 NNE 0.000 0.000 0.000 0.000 0.000 0.078 0.000 0.000 0.000 0.078 NE 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.000 0.039 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 0.040 0.000 0.000 0.000 0.040 SE 0.000 0.000 0.000 0.000 0.088 0.119 0.149 0.000 0.000 0.356 SSE 0.000 0.000 0.000 0.000 0.043 0.077 0.037 0.000 0.000 0.158 S 0.000 0.000 0.000 0.000 0.000 0.000 0.074 0.000 0.000 0.074 SSW 0.000 0.000 0.000 0.000 0.000 0.038 0.037 0.000 0.000 0.076 SW 0.000 0.000 0.000 0.000 0.000 0.040 0.038 0.000 0.000 0.077 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 0.039 0.075 0.000 0.000 0.113 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 0.037 0.000 0.000 0.037 SUBTOTAL 0.000 0.000 0.000 0.000 0.131 0.510 0.634 0.000 0.000 1.276 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS B 33.690 TOTAL HOURS OF ELEVATED STABILITY CLASS B 27.990 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-88

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.158 0.186 0.000 0.000 0.345 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.074 0.000 0.000 0.074 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 0.041 0.038 0.000 0.000 0.079 SE 0.000 0.000 0.000 0.046 0.129 0.482 0.110 0.000 0.000 0.767 SSE 0.000 0.000 0.000 0.046 0.043 0.040 0.112 0.032 0.000 0.273 S 0.000 0.000 0.000 0.000 0.000 0.000 0.038 0.000 0.000 0.038 SSW 0.000 0.000 0.000 0.000 0.044 0.118 0.000 0.000 0.000 0.161 SW 0.000 0.000 0.000 0.091 0.045 0.040 0.000 0.000 0.000 0.175 WSW 0.000 0.000 0.000 0.091 0.088 0.164 0.000 0.000 0.000 0.343 W 0.000 0.000 0.000 0.000 0.046 0.077 0.000 0.000 0.000 0.122 WNW 0.000 0.000 0.000 0.000 0.000 0.040 0.037 0.000 0.000 0.077 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 0.080 0.000 0.000 0.000 0.080 SUBTOTAL 0.000 0.000 0.000 0.273 0.393 1.239 0.596 0.032 0.000 2.534 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS C 62.570 TOTAL HOURS OF ELEVATED STABILITY CLASS C 55.590 METEOROLOGICAL FACILITY- BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-89

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.046 0.046 0.218 1.340 0.931 0.088 0.000 2.669 NNE 0.000 0.000 0.046 0.091 0.303 1. 680 0.410 0.030 0.000 2.559 NE 0.000 0.000 0.091 0.182 0.172 0.677 0.000 0.000 0.000 1.123 ENE 0.000 01.000 0.046 0.046 0.087 0.000 0.000 0.000 0.000 0.178 E 0.000 0.000 0.091 0.182 0.000 0.039 0.000 0.000 0.000 0.313 ESE 0.000 0.000 0.182 0.319 0.264 0.199 0.187 0.000 0.000 1.152 SE 0.000 0.000 0.547 0.866 0.663 1.392 0.224 0.369 0.021 4.082 SSE 0.000 0.000 0.182 0.410 0.134 0.281 0.403 0.203 0.025 1.639 S 0.000 0.000 0.273 0.365 0.220 0.282 0.369 0.106 0.009 1.624 SSW 0.000 0.000 0.273 0.091 0.000 0.476 0.597 0.061 0.026 1.525 SW 0.000 0.000 0.091 0.137 0.132 0.762 0.222 0.000 0.000 1.344 WSW 0.000 0.000 0.046 0.182 0.176 0.476 0.148 0.000 0.000 1.028 W 0.000 0.000 0.137 0.228 0.394 1.264 1.154 0.060 0.000 3.237 WNW 0.000 0.046 0.091 0.365 0.434 1.082 0.658 0.245 0.000 2.920 NW 0.000 0.000 0.137 0.365 0.435 1.028 1.398 0.462 0.000 3.825 NNW 0.000 0.046 0.000 0.273 0.526 2.156 0.706 0.035 0.000 3.743 SUBTOTAL 0.000 0.091 2.279 4.148 4.160 13.136 7.406 1.658 0.081 32.958 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS D 811.150 TOTAL HOURS OF ELEVATED STABILITY CLASS D 723.100 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-90

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24. 5 TOTAL N 0.000 0.000 0.046 0.091 0.262 0.196 0.074 0.000 0.000 0.670 NNE 0.000 0.000 0.046 0.228 0.088 0.360 0.149 0.000 0.000 0.871 NE 0.000 0.000 0.091 0.091 0.307 0.362 0.076 0.000 0.000 0.927 ENE 0.000 0.000 0.000 0.137 0.262 0.247 0.000 0.000 0.000 0.646 E. 0.000 0.000 0.091 0.137 0.175 0.447 0.000 0.000 0.000 0.849 ESE 0.000 0.046 0.182 0.091 0.304 1.083 0.149 0.000 0.000 1.856 SE 0.000 0.000 0.228 0.273 0.352 1.398 0.483 0.146 0.000 2.880 SSE 0.000 0.000 0.046 0.091 0.355 0.758 1.033 0.758 0.072 3.113 S 0.000 0.000 0.137 0.273 0.438 1.395 1.814 0.579 0.066 4.702 SSW 0.000 0.000 0.091 0.091 0.133 1.107 1.301 0.165 0.025 2.912 SW 0.000 0.000 0.046 0.228 0.262 0.358 0.113 0.000 0.000 1.006 WSW 0.000 0.000 0.046 0.046 0.088 0.369 0.000 0.000 0.000 0.547 W 0.000 0.000 0.182 0.182 0.700 0.483 0.075 0.000 0.000 1.623 WNW 0.000 0.000 0.000 0.273 0.216 0.562 0.000 0.000 0.000 1.052 NW 0.000 0.000 0.091 0.182 0.131 0.834 0.073 0.036 0.000 1.348 NNW 0.000 0.000 0.046 0.182 0.308 0.806 0.260 0.000 0.000 1.602 SUBTOTAL 0.000 0.046 1.367 2.598 4.380 10.766 5.602 1.684 0.163 26.605 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS E 674.840 TOTAL HOURS OF ELEVATED STABILITY CLASS E 583.710 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-91

SPLIT JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.091 0.043 0.598 0.000 0.000 0.000 0.732 NNE 0.000 0.000 0.000 0.046 0.131 0.719 0.075 0.000 0.000 0.970 NE 0.000 0.000 0.091 0.046 0.219 0.318 0.000 0.000 0.000 0.673 ENE 0.000 0.000 0.091 0.091 0.223 0.315 0.000 0.000 0.000 0.721 E 0.000 0.000 0.046 0.000 0.044 0.599 0.037 0.000 0.000 0.726 ESE 0.000 0.000 0.046 0.228 0.170 1.150 0.000 0.000 0.000 1.594 SE 0.000 0.000 0.137 0.046 0.387 1.490 0.000 0.000 0.000 2.060 SSE 0.000 0.000 0.091 0.000 0.220 0.354 0.851 0.201 0.000 1.717 S 0.000 0.000 0.182 0.182 0.220 1.072 0.626 0.000 0.000 2.282 SSW 0.000 0.000 0.137 0.410 0.268 0.434 0.113 0.000 0.000 1.362 SW 0.000 0.000 0.137 0.046 0.000 0.039 0.000 0.000 0.000 0.222 WSW 0.000 0.000 0.091 0.000 0.087 0.000 0.000 0.000 0.000 0.178 W 0.000 0.000 0.000 0.182 0.132 0.000 0.000 0.000 0.000 0.314 WNW 0.000 0.000 0.137 0.228 0.046 0.000 0.000 0.000 0.000 0.410 NW 0.000 0.000 0.046 0.137 0.176 0.121 0.000 0.000 0.000 0.479 NNW 0.000 0.000 0.000 0.091 0.086 0.202 0.000 0.000 0.000 0.380 SUBTOTAL 0.000 0.000 1.231 1.823 2.451 7.412 1.702 0.201 0.000 14.819 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS F 384.990 TOTAL HOURS OF ELEVATED STABILITY CLASS F 325.130 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-92

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

BROWNS FERRY NUCLEAR PLANT ELEVATED RELEASE MODE OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.046 0.091 0.086 0.469 0.038 0.000 0.000 0.730 NNE 0.000 0.000 0.046 0.137 0.000 0.159 0.038 0.000 0.000 0.379 NE 0.000 0.000 0.091 0.182 0.218 0.200 0.037 0.000 0.000 0.728 ENE 0.000 0.000 0.000 0.000 0.259 0.082 0.000 0.000 0.000 0.341 E 0.000 0.000 0.182 0.228 0.175 0.082 0.000 0.000 0.000 0.667 ESE 0.000 0.046 0.046 0.182 0.128 0.245 0.000 0.000 0.000 0.646 SE 0.000 0.000 0.182 0.593 0.445 0.243 0.000 0.000 0.000 1.464 SSE 0.000 0.046 0.228 0.137 0.087 0.079 0.073 0.000 0.000 0.649 S 0.000 0.046 0.228 0.046 0.000 0.157 0.000 0.000 0.000 0.476 SSW 0.000 0.000 0.273 0.046 0.042 0.119 0.000 0.000 0.000 0.480 SW 0.000 0.046 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.137 WSW 0.000 0.046 0.137 0.000 0.000 0.000 0.000 0.000 0.000 0.182 W 0.000 0.046 0.046 0.000 0.045 0.000 0.000 0.000 0.000 0.136 WNW 0.000 0.000 0.182 0.091 0.000 0.000 0.000 0.000 0.000 0.273 NW 0.000 0.000 0.137 0.137 0.043 0.000 0.000 0.000 0.000 0.316 NNW 0.000 0.046 0.091 0.137 0.088 0.000 0.000 0.000 0.000 0.361 SUBTOTAL 0.000 0.319 2.005 2.005 1.616 1.835 0.186 0.000 0.000 7.967 TOTAL HOURS OF VALID OBSERVATIONS 2194.000 TOTAL HOURS OF ELEVATED RELEASES 1901.930 TOTAL HOURS OF STABILITY CLASS G 200.090 TOTAL HOURS OF ELEVATED STABILITY CLASS G 174.790 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 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 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-93

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 9 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FIRST QUARTER E2-94

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 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 0.046 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 0.000 0.000 0.139 0.000 0.000 0.000 0.139 S 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.000 0.000 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.o00o 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 0.093 0.186 0.000 0.000 0.000 0.278 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS A 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 8.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-95

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

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 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 0.046 0.000 0.046 0.000 0.000 0.046 0.139 SSE 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 S 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.093 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 0.046 0.093 0.093 0.000 0.000 0.046 0.278 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS B 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.78 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-96

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

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 18.5-24.4 224.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 NNE 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 0.093 0.139 0.046 0.046 0.000 0.325 SE 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.000 0.046 0.000 0.093 0.000 0.000 0.000 0.139 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 0.046 0.000 0.093 0.000 0.000 0.139 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 0.139 0.046 0.000 0.000 0.186 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 0.046 0.000 0.000 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.139 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.139 0.000 0.000 0.139 SUBTOTAL 0.000 0.000 0.000 0.093 0.186 0.557 0.510 0.046 0.000 1.391 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS C 30 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 30 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 11.31 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-97

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

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 WIND WIND SPEED (MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >-24.5 TOTAL N 0.000 0.000 0.093 0.139 0.325 1.252 1.531 0.371 0.000 3.711 NNE 0.000 0.000 0.046 0.139 0.603 2.087 0.881 0.000 0.000 3.757 NE 0.000 0.000 0.000 0.186 0.278 1.577 0.696 0.000 0.000 2.737 ENE 0.000 0.000 0.093 0.139 0.696 1.252 0.417 0.000 0.000 2.597 E 0.000 0.093 0.093 0.232 0.649 0.835 0.325 0.000 0.000 2.226 ESE 0.000 0.000 0.000 0.510 0.464 0.742 0.464 0.278 0.232 2.690 SE 0.000 0.046 0.139 0.139 0.046 0.278 0.371 0.186 0.835 2.041 SSE 0.000 0.000 0.186 0.093 0.093 0.278 0.232 0.093 0.139 1.113 S 0.000 0.046 0.093 0.186 0.278 0.093 0.186 0.000 0.000 0.881 SSW 0.000 0.000 0.093 0.093 0.139 0.371 0.278 0.000 0.000 0.974 SW 0.000 0.046 0.139 0.139 0.325 0.788 0.557 0.139 0.000 2.134 WSW 0.000 0.000 0.000 0.186 0.371 1.020 0.649 0.278 0.000 2.505 W 0.000 0.000 0.000 0.232 0.603 0.974 0.881 0.788 0.232 3.711 WNW 0.000 0.000 0.046 0.371 0.232 1.391 1.531 1.438 0.325 5.334 NW 0.000 0.000 0.000 0.278 0.417 1.438 2.551 0.928 0.139 5.751 NNW 0.000 0.000 0.046 0.186 0.371 1.577 2.365 0.649 0.046 5.241 SUBTOTAL 0.000 0.232 1.067 3.247 5.891 15.955 13.915 5.148 1.948 47.403 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS D 1022 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 1022 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 12.34 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-98

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 18.5-24.4 224.5 TOTAL N 0.000 0.000 0.000 0.046 0.093 0.788 0.464 0.000 0.000 1.391 NNE 0.000 0.000 0.000 0.000 0.093 0.742 1.113 0.046 0.000 1.994 NE 0.000 0.000 0.046 0.093 0.000 1.299 0.464 0.186 0.000 2.087 ENE 0.000 0.000 0.046 0.046 0.093 0.649 0.371 0.000 0.000 1.206 E 0.000 0.000 0.000 0.232 0.046 0.325 0.278 0.000 0.000 0.881 ESE 0.000 0.046 0.139 0.139 0.325 0.557 0.278 0.139 0.046 1.670 SE 0.000 0.000 0.232 0.046 0.000 0.696 2.134 0.510 1.067 4.685 SSE 0.000 0.000 0.139 0.093 0.325 0.928 0.881 0. 649 0.325 3.340 S 0.000 0.000 0.093 0.046 0.278 0. 928 1.252 0.788 0.464 3.850 SSW 0.000 0.000 0.139 0.186 0.278 1.160 1.113 1.206 0.278 4.360 SW 0.000 0.000 0.046 0.000 0.464 1.020 0.742 0.371 0.093 2.737 WSW 0.000 0.000 0.046 0.093 0.046 0.742 0.881 0.093 0.000 1.902 W 0.000 0.000 0.000 0.186 0.046 0.603 0.510 0.000 0.046 1.391 WNW 0.000 0.000 0.000 0.000 0.139 0.232 0.139 0.139 0.000 0.649 NW 0.000 0.000 0.000 0.232 0.046 0.139 0.649 0.093 0.000 1.160 NNW 0.000 0.000 0.000 0.046 0.093 0.139 0.557 0.046 0.000 0.881 SUBTOTAL 0.000 0.046 0.928 1.484 2.365 10.946 11.827 4.267 2.319 34.184 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS E 737 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 737 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 13.86 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-99

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.046 0.000 0.139 0.186 0.046 0.000 0.417 NNE 0.000 0.000 0.000 0.000 0.046 0.186 0.278 0.046 0.000 0 .557 NE 0.000 0.000 0.000 0.046 0.000 0.139 0.000 0.000 0.000 0.186 ENE 0.000 0.000 0.046 0.000 0.046 0.046 0.093 0.046 0.000 0.278 E 0.000 0.046 0.046 0.000 0.000 0.325 0.232 0.046 0.000 0.696 ESE 0.000 0.000 0.000 0.046 0.093 0.371 0.186 0.000 0.000 0.696 SE 0.000 0.000 0.046 0.046 0.000 0.557 0.510 0.093 0.093 1.345 SSE 0.000 0.000 0.046 0.046 0.139 0.557 0.557 0.325 0.000 1.670 S 0.000 0.000 0.046 0.000 0.000 0.649 1.716 0.417 0.093 2.922 SSW 0.000 0.000 0.000 0.046 0.186 0.510 0.510 0.093 0.000 1.345 SW 0.000 0.000 0.046 0.186 0.139 0.835 0.186 0.000 0.000 1.391 WSW 0.000 0.046 0.000 0.093 0.093 0.371 0.139 0.000 0.000 0.742 W 0.000 0.000 0.000 0.046 0.000 0.000 0.046 0.000 0.000 0.093 WNW 0.000 0.000 0.000 0.093 0.046 0.046 0.000 0.000 0.000 0.186 NW 0.000 0.000 0.046 0.046 0.186 0.093 0.000 0.000 0.000 0.371 NNW 0.000 0.000 0.093 0.000 0.046 0.000 0.139 0.046 0.000 0.325 SUBTOTAL 0.000 0.093 0.417 0.742 1.020 - 4.824 4.777 1.160 0.186 13.219 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS F 285 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 285 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 12.20 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-1 00

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

BROWNS FERRY NUCLEAR PLANT JANUARY 1, 2011 - MARCH 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNE 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.093 NE 0.000 0.000 0.046 0.093 0.000 0.093 0.000 0.000 0.000 0.232 ENE 0.000 0.000 0.000 0.000 0.046 0.093 0.046 0.000 0.000 0.186 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 0.046 0.093 0.046 0.000 0.000 0.000 0.000 0.186 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 SSE 0.000 0.000 0.046 0.000 0.000 0.000 0.278 0.046 0.000 0.371 S 0.000 0.000 0.046 0.000 0.046 0.000 0.139 0.139 0.000 0.371 SSW 0.000 0.000 0.093 0.093 0.046 0.093 0.278 0.046 0.000 0.649 SW 0.000 0.046 0.046 0.000 0.000 0.232 0.046 0.000 0.000 0.371 WSW 0.000 0.000 0.093 0.000 0.046 0.093 0.093 0.000 0.000 0.325 W 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.046 0.093 0.046 0.000 0.000 0.000 0.000 0.186 NW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 SUBTOTAL 0.000 0.093 0.510 0.371 0.464 0.649 0.881 0.278 0.000 3.247 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2156 TOTAL HOURS OF STABILITY CLASS G 70 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 70 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2156 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.62 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-101

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 10 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES SECOND QUARTER E2-102

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT ! -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 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 0.048 0.000 0.000 0.000 0.048 SSE 0.000 0.000 0.000 0.000 0.048 0.144 0.000 0.000 0.000 0.192 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 0.048 0.048 0.000 0.096 SW 0.000 0.000 0.000 0.000 0.000 0.144 0.048 0.048 0.000 0.239 WSW 0.000 0.000 0.000 0.000 0.000 0.048 0.048 0.000 0.000 0.096 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 0.048 0.383 0.144 0.096 0.000 0.670 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 11.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-103

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

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.048 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 0.048 0.000 0.048 0.000 0.000 0.000 0.096 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 0.096 0.000 0.000 0.000 0.096 S 0.000 0.000 0.000 0.000 0.000 0.192 0.048 0.096 0.000 0.335 SSW 0.000 0.000 0.000 0.048 0.048 0.000 0.000 0.000 0.000 0.096 SW 0.000 0.000 0.000 0.000 0.000 0.048 0.287 0.000 0.000 0.335 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.048 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 NW 0.000 0.000 0.000 0.000 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 0.096 0.048 0.431 0.431 0.096 0.000 1.102 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS B 26 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 23 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 12.21 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-104

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

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.192 0.144 0.000 0.000 0.335 NNE 0.000 0.000 0.000 0.000 0.096 0.383 0.000 0.000 0.000 0.479 NE 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 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 0.048 0.000 0.000 0.000 0.000 0.048 SE 0.000 0.000 0.000 0.000 0.192 0.096 0.048 0.048 0.000 0.383 SSE 0.000 0.000 0.000 0.048 0.048 0.000 0.048 0.000 0.000 0.144 S 0.000 0.000 0.000 0.000 0.000 0.096 0.144 0.096 0.048 0.383 SSW 0.000 0.000 0.000 0.096 0.096 0.096 0.239 0.000 0.000 0.527 SW 0.000 0.000 0.000 0.048 0.144 0.096 0.287 0.000 0.000 0.575 WSW 0.000 0.000 0.000 0.096 0.000 0.144 0.239 0.192 0.000 0.670 W 0.000 0.000 0.000 0.048 0.096 0.287 0.144 0.144 0.000 0.718 WNW 0.000 0.000 0.000 0.000 0.144 0.144 0.192 0.000 0.000 0.479 NW 0.000 0.000 0.000 0.000 0.048 0.144 0.048 0.000 0.000 0.239 NNW 0.000 0.000 0.000 0.000 0.000 0.192 0.192 0.000 0.000 0.383 SUBTOTAL 0.000 0.000 0.000 0.335 0.910 1.916 1.724 0.479 0.048 5.412 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS C 118 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 11.85 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-105

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

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.048 0.000 0.000 0.144 1.102 0.383 0.000 0.096 1.772 NNE 0.000 0.000 0.096 0.192 0.383 0.623 0.287 0.000 0.000 1.580 NE 0.000 0.000 0.048 0.144 0.192 0.048 0.096 0.048 0.000 0.575 ENE 0.000 0.000 0.096 0.096 0.000 0.192 0.048 0.000 0.000 0.431 E 0.000 0.000 0.144 0.000 0.096 0.048 0.000 0.000 0.000 0.287 ESE 0.000 0.000 0.096 0.144 0.096 0.383 0.048 0.144 0.000 0.910 SE 0.000 0.000 0.048 0.479 0.192 0.575 0.144 0.144 0.000 1.580 SSE 0.000 0.000 0.383 0.479 0.431 0.862 1.006 0.144 0.144 3.448 S 0.000 0.000 0.287 0.335 0.383 1.341 1.533 1.485 0.096 5.460 SSW 0.000 0.048 0.287 0.383 0.048 1.102 2.059 0.814 0.239 4 .981 SW 0.000 0.000 0.144 0.479 0.335 1.485 0.862 0.287 0.048 3.640 WSW 0.000 0.000 0.431 0.431 0.335 0.862 0.575 0.096 0.048 2.778 W 0.000 0.048 0.287 0.335 0.575 0.623 0.862 0.287 0.000 3.017 WNW 0.000 0.000 0.048 0.287 0.431 1.149 1. 628 0.527 0.096 4 .167 NW 0.000 0.000 0.144 0.287 0.479 0.910 1.964 0.431 0.287 4.502 NNW 0.000 0.000 0.048 0.048 0.239 1.197 0. 958 0.096 0.000 2.586 SUBTOTAL 0.000 0.144 2.586 4.119 4.358 12.500 12.452 4.502 1.054 41.715 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS D 909 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 871 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 11.78 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-106

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.048 0.000 0.096 0.766 0.192 0.000 0.000 1.102 NNE 0.000 0 000 0.000 0.000 0.144 0.287 0.144 0.048 0.000 0. 623 NE 0.000 0.000 0.096 0.096 0.192 0.383 0.192 0.000 0.000 0. 958 ENE 0.000 0.000 0.000 0.048 0.000 0.048 0.000 0.096 0.000 0.192 E 0.000 0.000 0.000 0.000 0.048 0.048 0.192 0.000 0.000 0.287 ESE 0.000 0.000 0.000 0.096 0.096 0.192 0.239 0.048 0.000 0. 670 SE 0.000 0.000 0.000 0.000 0.192 1.102 0.862 0.048 0.048 2.251 SSE 0.000 0.000 0.096 0.096 0.287 1.628 1.149 0.431 0.000 3. 688 S 0.000 0.000 0.144 0.096 0.144 1.389 1.868 1.916 1.533 7.088 SSW 0.000 0.000 0.144 0.192 0.431 1.149 2.011 1.676 0.287 5.891 SW 0.000 0.000 0.192 0.287 0.383 1.293 0.718 0.144 0.000 3.017 WSW 0.000 0.000 0.144 0.192 0.192 0.431 0.335 0.048 0.000 1.341 W 0.000 0.000 0.000 0.192 0.239 0.479 0.527 0.000 0.000 1.437 WNW 0.000 0.000 0.000 0.048 0.048 0.144 0.144 0.000 0.048 0.431 NW 0.000 0.000 0.000 0.048 0.000 0.192 0.096 0.048 0.048 0.431 NNW 0.000 0.000 0.096 0.144 0.192 0.192 0.287 0.048 0.000 0.958 SUBTOTAL 0.000 0.000 0.958 1.533 2.682 9.722 8.956 4.550 1.964 30.364 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS E 654 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 634 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 13.59 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-107

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.048 0.144 0.239 0.335 0.000 0.000 0.766 NNE 0.000 0.000 0.048 0.000 0.048 0.479 0.527 0.000 0.000 1.102 NE 0.000 0.000 0.000 0.000 0.096 0.479 0.335 0.000 0.000 0.910 ENE 0.000 0.000 0.000 0.048 0.144 0.192 0.144 0.096 0.000 0.623 E 0.000 0.048 0.048 0.096 0.000 0.144 0.239 0.000 0.000 0.575 ESE 0.000 0.048 0.048 0.144 0.000 0.144 0.335 0.000 0.000 0.718 SE 0.000 0.000 0.144 0.096 0.239 0.718 0.287 0.000 0.000 1.485 SSE 0.000 0.000 0.048 0.144 0.383 1.533 0.575 0.192 0.000 2.874 S 0.000 0.000 0.048 0.000 0.239 0.766 1.437 0. 958 0.096 3.544 SSW 0.000 0.000 0.192 0.000 0.192 0.575 1.293 0.144 0.000 2.395 SW 0.000 0.000 0.096 0.000 0.000 0.527 0.239 0.000 0.000 0.862 WSW 0.000 0.000 0.096 0.096 0.239 0.192 0.000 0.000 0.000 0. 623 W 0.000 0.048 0.096 0.048 0.096 0.000 0.048 0.000 0.000 0.335 WNW 0.000 0.000 0.048 0.000 0.048 0.000 0.048 0.000 0.000 0.144 NW 0.000 0.000 0.048 0.096 0.192 0.144 0.000 0.000 0.000 0.479 NNW 0.000 0.000 0.000 0.000 0.096 0.096 0.096 0.000 0.000 0.287 SUBTOTAL 0.000 0.144 0.958 0.814 2.155 6.226 5.939 1.389 0.096 17.720 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS F 382 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 370 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 11.38 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-108

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

BROWNS FERRY NUCLEAR PLANT APRIL 1, 2011 - JUNE 30, 2011 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 Ž24.5 TOTAL N 0.000 0'.000 0.000 0.000 0.048 0.096 0.000 0.000 0.000 0.144 NNE 0.000 0.000 0.000 0.000 0.000 0.048 0.096 0.000 0.000 0.144 NE 0.000 0.000 0.048 0.000 0.000 0.192 0.383 0.000 0.000 0.623 ENE 0.000 0.000 0.000 0.096 0.000 0.048 0.048 0.000 0.000 0.192 E 0.000 0.000 0.000 0.048 0.192 0.287 0.000 0.000 0.000 0.527 ESE 0.000 0.000 0.000 0.048 0.192 0.000 0.000 0.000 0.000 0.239 SE 0.000 0.000 0.000 0.000 0.000 0.048 0.096 0.000 0.000 0.144 SSE 0.000 0.000 0.000 0.000 0.048 0.000 0.144 0.000 0.000 0.192 S 0.000 0.000 0.000 0.096 0.000 0.000 0.144 0.000 0.000 0.239 SSW 0.000 0.000 0.000 0.096 0.000 0.000 0.096 0.000 0.000 0.192 SW 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.048 WSW 0.000 0.000 0.000 0.048 0.048 0.000 0.000 0.000 0.000 0.096 W 0.000 0.000 0.048 0.096 0.000 0.000 0.000 0.000 0.000 0.144 WNW 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.000 0.000 0.048 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 SUBTOTAL 0.000 0.000 0.096 0.575 0.575 0.766 1.006 0.000 0.000 3.017 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2166 TOTAL HOURS OF STABILITY CLASS G 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED=STABILITY CLASS G 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2088 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-109

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 11 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES THIRD QUARTER E2-110

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.397 0.000 0.000 0.397 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.050 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 0.099 0.099 0.000 0.000 0.198 SE 0.000 0.000 0.000 0.000 0.198 0.248 0.198 0.000 0.000 0.645 SSE 0.000 0.000 0.000 0.000 0.297 0.496 0.000 0.000 0.000 0.793 S 0.000 0.000 0.000 0.000 0.099 0.198 0.000 0.000 0.000 0.297 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 0.149 0.000 0.000 0.000 0.149 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 0.595 1.190 0.744 0.000 0.000 2.529 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS A 51 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 51 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 10.50 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM-UNROUNDED NUMBERS E2-111

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

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.050 0.099 0.149 0.000 0.000 0.297 NNE 0.000 0.000 0.000 0.000 0.050 0.198 0.050 0.000 0.000 0.297 NE 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 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 0.149 0.149 0.050 0.000 0.000 0.347 SE 0.000 0.000 0.000 0.099 0.198 0.297 0.248 0.000 0.000 0.843 SSE 0.000 0.000 0.000 0.149 0.149 0.050 0.000 0.000 0.000 0.347 S 0.000 0.000 0.000 0.000 0.099 0.099 0.000 0.000 0.000 0.198 SSW 0.000 0.000 0.000 0.000 0.000 0.099 0.000 0.000 0.000 0.099 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.050 WSW 0.000 0.000 0.000 0.050 0.149 0.000 0.000 0.000 0.000 0.198 W 0.000 0.000 0.000 0.000 0.000 0.099 0.050 0.000 0.000 0.149 WNW 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.099 0.000 0.000 0.099 NNW 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 SUBTOTAL 0.000 0.000 0.000 0.297 0.843 1.239 0.645 0.050 0.000 3.074 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS B 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 62 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.21 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-112

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

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.050 0.149 0.248 0.000 0.000 0.446 NNE 0.000 0.000 0.000 0.000 0.000 0.149 0.000 0.000 0.000 0.149 NE 0.000 0.000 0.000 0.000 0.000 0.050 0.000 0.000 0.000 0.050 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 0.099 0.000 0.000 0.000 0.099 ESE 0.000 0.000 0.000 0.050 0.198 0.248 0.347 0.000 0.000 0.843 SE 0.000 0.000 0.000 0.297 0.149 0.198 0.000 0.000 0.000 0.645 SSE 0.000 0.000 0.149 0.198 0.149 0.099 0.050 0.000 0.000 0.645 S 0.000 0.000 0.099 0.050 0.149 0.050 0.000 0.000 0.000 0.347 SSW 0.000 0.000 0.000 0.050 0.050 0.050 0.000 0.000 0.000 0.149 SW 0.000 0.000 0.000 0.198 0.050 0.099 0.000 0.000 0.000 0.347 WSW 0.000 0.000 0.050 0.149 0.198 0.050 0.000 0.000 0.000 0.446 W 0.000 0.000 0.000 0.000 0.050 0.248 0.000 0.000 0.000 0.297 WNW 0.000 0.000 0.000 0.050 0.050 0.248 0.099 0.000 0.000 0.446 NW 0.000 0.000 0.000 0.000 0.000 0.050 0.099 0.149 0.000 0.297 NNW 0.000 0.000 0.000 0.000 0.000 0.198 0.099 0.099 0.000 0.397 SUBTOTAL 0.000 0.000 0.297 1.041 1.091 1.983 0.942 0.248 0.000 5.602 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS C 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 113 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.16 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-113

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

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.099 0.149 0.595 1.239 0.545 0.347 0.099 3.074 NNE 0.000 0.000 0.050 0.198 0.297 0.496 0.347 0.099 0.198 1.686 NE 0.000 0.000 0.248 0.198 0.099 0.149 0.248 0.000 0.000 0.942 ENE 0.000 0.000 0.149 0.050 0.149 0.099 0.050 0.000 0.000 0.496 E 0.000 0.000 0.248 0.050 0.050 0.248 0.149 0.050 0.000 0.793 ESE 0.000 0.000 0.050 0.496 0.347 0.595 0.744 0.000 0.000 2.231 SE 0.000 0.050 0.347 0.843 0.446 1.091 1.041 0.843 0.000 4.660 SSE 0.000 0.000 0.645 0.496 0.149 0.496 0.000 0.347 0.000 2.132 S 0.000 0.000 0.793 0.297 0.496 1.140 0.198 0.198 0.099 3.223 SSW 0.000 0.050 0.694 0.892 0.446 0.446 0.248 0.149 0.000 2. 925 SW 0.000 0.050 0.694 0.645 0.446 0.645 0.099 0.000 0.000 2.578 WSW 0.000 0.050 0.694 1.140 0.744 0.595 0.000 0.000 0.000 3.223 W 0.000 0.000 0.149 0.992 0.843 2.082 0.099 0.000 0.000 4.165 WNW 0.000 0.000 0.149 0.198 0.744 1.190 0.347 0.000 0.000 2 .628 NW 0.000 0.000 0.050 0.397 0.545 0.843 0.198 0.198 0.000 2.231 NNW 0.000 0.000 0.050 0.347 0.198 0.793 1.091 0.744 0.099 3.322 SUBTOTAL 0.000 0.198 5.107 7.387 6.594 12.147 5.404 2.975 0.496 40.307 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS D 845 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 813 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.07 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-114

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5 < AT

1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.050 0.248 0.050 0.645 0.942 0.050 0.000 1.983 NNE 0.000 0.000 0.099 0.099 0.397 0.297 0.496 0.000 0.000 1.388 NE 0.000 0.000 0.099 0.099 0.347 0.297 0.198 0.000 0.000 1.041 ENE 0.000 0.000 0.000 0.099 0.347 0.397 0.099 0.050 0.000 0.992 E 0.000 0.000 0.099 0.149 0.14.9 0.099 0.347 0.000 0.000 0.843 ESE 0.000 0.000 0.099 0.297 0.248 0.843 0.496 0.000 0.000 1.983 SE 0.000 0.000 0.149 0.297 0.347 0.992 0.744 0.198 0.000 2.727 SSE 0.000 0.000 0.297 0.347 0.397 0.793 0.248 0.050 0.000 2.132 S 0.000 0.000 0.000 0.248 0.744 0. 942 0.248 0.248 0.050 2.479 SSW 0.000 0.000 0.297 0.446 0.446 0.545 0.149 0.050 0.000 1.934 SW 0.000 0.000 0.099 0.496 0.297 0.198 0.099 0.050 0.000 1.239 WSW 0.000 0.050 0.050 0.198 0.198 0.446 0.050 0.000 0.000 0.992 W 0.000 0.000 0.297 0.347 0.347 1.934 0.297 0.050 0.000 3.272 WNW 0.000 0.000 0.000 0.248 0.347 0.694 0.149 0.000 0.000 1.438 NW 0.000 0.000 0.198 0.198 0.397 0.050 0.000 0.000 0.000 0.843 NNW 0.000 0.000 0.149 0.099 0.000 0.297 0.595 0.198 0.000 1.339 SUBTOTAL 0.000 0.050 1.983 3.917 5.057 9.470 5.156 0.942 0.050 26.624 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS E 574 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 537 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.18 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-115

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.050 0.050 0.149 0.297 0.992 0.694 0.000 2.231 NNE 0.000 0.000 0.050 0.099 0.297 0.397 0.892 0.050 0.000 1.785 NE 0.000 0.000 0.000 0.000 0.149 0.545 0.248 0.000 0.000 0.942 ENE 0.000 0.000 0.099 0.347 0.149 0.595 0.248 0.050 0.000 1.487 E 0.000 0.050 0.099 0.000 0.050 0.496 0.050 0.000 0.000 0.744 ESE 0.000 0.000 0.000 0.297 0.149 0.496 0.099 0.000 0.000 1.041 SE 0.000 0.000 0.099 0.297 0.198 0.793 0.099 0.000 0.000 1.487 SSE 0.000 0.000 0.149 0.248 0.248 1.140 0.149 0.000 0.000 1.934 S 0.000 0.000 0.149 0.149 0.050 0.050 0.050 0.000 0.000 0.446 SSW 0.000 0.000 0.099 0.347 0.198 0.000 0.000 0.000 0.000 0. 645 SW 0.000 0.000 0.149 0.248 0.149 0.099 0.000 0.000 0.000 0.645 WSW 0.000 0.000 0.050 0.050 0.149 0.347 0.000 0.000 0.000 0.595 W 0.000 0.000 0.149 0.099 0.050 0.198 0.050 0.000 0.000 0.545 WNW 0.000 0.000 0.099 0.198 0.050 0.099 0.000 0.000 0.000 0.446 NW 0.000 0.000 0.000 0.198 0.099 0.050 0.000 0.000 0.000 0.347 NNW 0.000 0.000 0.099 0.149 0.149 0.149 0.397 0.050 0.000 0.992 SUBTOTAL 0.000 0.050 1.339 2.776 2.281 5.751 3.272 0.843 0.000 16.311 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS F 333 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 329 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 9.46 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-116

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

BROWNS FERRY NUCLEAR PLANT JULY 1, 2011 - SEPTEMBER 30, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.099 0.050 0.000 0.000 0.000 0.000 0.000 0.149 NNE 0.000 0.000 0.050 0.099 0.050 0.050 0.000 0.050 0.000 0.297 NE 0.000 0.000 0.099 0.050 0.000 0.198 0.248 0.000 0.000 0.595 ENE 0.000 0.000 0.050 0.050 0.000 0.397 0.248 0.000 0.000 0.744 E 0.000 0.000 0.000 0.050 0.198 0.050 0.050 0.000 0.000 0.347 ESE 0.000 0.000 0.000 0.248 0.099 0.099 0.000 0.000 0.000 0.446 SE 0.000 0.000 0.248 0.000 0.248 0.099 0.000 0.000 0.000 0.595 SSE 0.000 0.000 0.050 0.149 0.198 0.099 0.000 0.000 0.000 0.496 S 0.000 0.050 0.000 0.000 0.248 0.198 0.000 0.000 0.000 0.496 SSW 0.000 0.050 0.149 0.050 0.050 0.000 0.000 0.000 0.000 0.297 SW 0.000 0.000 0.050 0.297 0.099 0.000 0.000 0.000 0.000 0.446 WSW -0.000 0.000 0.000 0.050 0.050 0.000 0.000 0.000 0.000 0.099 W 0.000 0.000 0.000 0.050 0.099 0.099 0.000 0.000 0.000 0.248 WNW 0.000 0.050 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.050 NW 0.000 0.000 0.050 0.000 0.050 0.050 0.000 0.000 0.000 0.149 NNW 0.000 0.050 0.000 0.000 0.050 0.000 0.000 0.000 0.000 0.099 SUBTOTAL 0.000 0.198 0.843 1.140 1.438 1.339 0.545 0.050 0.000 5.553 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2091 TOTAL HOURS OF STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 112 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2017 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 6.87 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-117

BROWNS FERRY NUCLEAR PLANT 2011 METEOROLOGICAL DATA TABLE 12 JOINT FREQUENCY DISTRIBUTION IN PERCENT FOR ELEVATED RELEASES FOURTH QUARTER E2-118

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (AT * -1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 18.5-24.4 224.5 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 0.046 0.091 0.091 0.000 0.000 0.228 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.228 0.046 0.000 0.273 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 0.046 0.000 0.000 0.000 0.046 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.046 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 .0.00 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 0.046 0.137 0.365 0.091 0.000 0.638 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 14 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 14.64 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-119

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.091 0.137 0.000 0.000 0.228 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 0.046 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 0.000 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 0.046 0.046 0.046 0.000 0.137 SE 0.000 0.000 0.000 0.000 0.046 0.137 0.273 0.000 0.000 0.456 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.091 S 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.046 SSW 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.046 0.000 0.137 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.137 0.000 0./0.00 0.137 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 0.182 0.000 0.000 0.182 SUBTOTAL 0.000 0.000 0.000 0.000 0.046 0.365 0.957 0.137 0.000 1.504 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS B 33 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 33 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 14.36 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-120

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24 .5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.137 0.319 0.000 0.000 0.456 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 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 0.000 0.091 0.365 0.137 0.091 0.000 0.684 SE 0.000 0.000 0.000 0.000 0.137 0.137 0.091 0.000 0.000 0.365 SSE 0.000 0.000 0.000 0.000 0.000 0.046 0.137 0.091 0.000 0.273 S 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 SSW 0.000 0.000 0.000 0.000 0.000 0.091 0.091 0.000 0.000 0.182 SW 0.000 0.000 0.000 0.000 0.000 0.182 0.000 0.000 0.000 0.182 WSW 0.000 0.000 0.000 0.000 0.182 0.091 0.046 0.000 0.000 0.319 W 0.000 0.000 0.000 0.000 0.046 0.000 0.137 0.000 0.000 0.182 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 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.000 0.091 SUBTOTAL 0.000 0.000 0.000 0.000 0.456 1.231 0.957 0.228 0.000 2.871 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS C 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 63 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 12.15 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-121

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.273 1.048 1.823 0.410 0.000 3.555 NNE 0.000 0.046 0.046 0.000 0.182 1.139 0.866 0.091 0.000 2.370 NE 0.000 0.000 0.046 0.273 0.091 0.547 0.273 0.000 0.000 1.231 ENE 0.000 0.000 0.046 0.000 0.182 0.091 0.000 0.000 0.000 0.319 E 0.000 0.000 0.091 0.091 0.137 0.091 0.000 0.000 0.000 0.410 ESE 0.000 0.000 0.182 0.866 0.273 0.775 0.638 0.137 0.000 2.871 SE 0.000 0.000 0.137 0.456 0.319 0.684 0.775 0.684 0.365 3.418 SSE 0.000 0.046 0.046 0.319 0.228 0.273 0.319 0.365 0.365 1.960 S 0.000 0.000 0.137 0.137 0.091 0.410 0.410 0.273 0.137 1.595 SSW 0.000 0.000 0.046 0.000 0.091 0.410 0.820 0.182 0.228 1.778 SW 0.000 0.000 0.228 0.228 0.000 0. 638 0.319 0.137 0.000 1.550 WSW 0.000 0.000 0.000 0.137 0.091 0.410 0.501 0.091 0.000 1.231 W 0.000 0.000 0.182 0.273 0.182 0.775 1.413 1.003 0.182 4.011 WNW 0.000 0.000 0.137 0.547 0.410 1.367 0.547 0.957 0.182 4.148 NW 0.000 0.046 0.000 0.273 0.319 0.638 1.732 1.139 0.000 4.148 NNW 0.000 0.000 0.091 0.091 0.273 2.005 1.048 0.228 0.000 3.737 SUBTOTAL 0.000 0.137 1.413 3.692 3.145 11.304 11.486 5.697 1.459 38.332 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS D 841 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS D 841 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 12.67 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-122

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.046 0.091 0.137 0.365 0.319 0.046 0.000 1.003 NNE 0.000 0.000 0.046 0.000 0.046 0.410 0.228 0.182 0.000 0.912 NE 0.000 0.046 0.091 0.091 0.091 0.501 0.273 0.000 0.000 1.094 ENE 0.000 0.046 0.046 0.091 0.137 0.137 0.046 0.000 0.000 0.501 E 0.000 0.000 0.137 0.091 0.137 0.319 0.319 0.000 0.000 1.003 ESE 0.000 0.000 0.000 0.137 0.137 0.456 1.139 0.228 0.046 2.142 SE 0.000 0.000 0.046 0.046 0.273 0.593 1.185 0.866 0.456 3.464 SSE 0.000 0.000 0.000 0.046 0.182 0.820 1.367 0.912 1.459 4.786 S 0.000 0.000 0.273 0.046 0.182 1.413 2.644 1.459 0.365 6.381 SSW 0.000 0.000 0.046 0.000 0.000 0.729 1.459 0.638 0.091 2.963 SW 0.000 0.000 0.000 0.000 0.137 0.593 0.365 0.000 0.000 1.094 WSW 0.000 0.000 0.000 0.046 0.000 0.273 0.365 0.000 0.000 0.684 W 0.000 0.000 0.046 0.182 0.137 0.820 0.273 0.046 0.000 1.504 WNW 0.000 0.000 0.000 0.000 0.273 0.638 0.501 0.000 0.000 1.413 NW 0.000 0.046 0.000 0.091 0.182 0.410 0.501 0.137 0.000 1.367 NNW 0.000 0.000 0.046 0.000 0.000 0.501 0.912 0.046 0.000 1.504 SUBTOTAL 0.000 0.137 0.820 0.957 2.051 8.979 11.896 4.558 2.416 31.814 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS E 698 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 698 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 14.23 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-123

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5 < AT

4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.182 0.501 0.091 0.000 0.775 NNE 0.000 0.000 0.000 0.000 0.000 0.182 0.729 0.091 0.000 1.003 NE 0.000 0.000 0.046 0.000 0.091 0.273 0.273 0.046 0.000 0.729 ENE 0.000 0.046 0.000 0.046 0.046 0.273 0.182 0.000 0.000 0.593 E 0.000 0.046 0.137 0.137 0.046 0.319 0.365 0.091 0.000 1.139 ESE 0.000 0.000 0.046 0.046 0.000 0.365 0.866 0.228 0.000 1.550 SE 0.000 0.000 0.137 0.182 0.046 0.638 1.048 0.182 0.091 2.325 SSE 0.000 0.000 0.046 0.046 0.046 0.410 1.641 0.729 0.000 2.917 S 0.000 0.000 0.000 0.000 0.000 0.365 1.185 0.182 0.000 1.732 SSW 0.000 0.000 0.000 0.091 0.046 0.365 0.638 0.228 0.000 1.367 SW 0.000 0.000 0.091 0.000 0.182 0.319 0.046 0.000 0.000 0.638 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.091 0.000 0.000 0.091 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 0.182 0.273 0.046 0.000 0.000 0.000 0.501 NW 0.000 0.000 0.000 0.182 0.091 0.273 0.091 0.000 0.000 0.638 NNW 0.000 0.046 0.046 0.000 0.000 0.182 0.182 0.000 0.000 0.456 SUBTOTAL 0.000 0.137 0.547 0.957 0.866 4.193 7.840 1.869 0.091 16.500 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS F 362 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 362 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 13.03 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-124

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

BROWNS FERRY NUCLEAR PLANT OCTOBER 1, 2011 - DECEMBER 31, 2011 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 Ž24.5 TOTAL N 0.000 0.046 0.000 0.000 0.046 0.228 0.456 0.137 0.000 0.912 NNE 0.000 0.000 0.046 0.000 0.000 0.046 0.182 0.000 0.000 0.273 NE 0.000 0.000 0.000 0.046 0.000 0.273 0.137 0.046 0.000 0.501 ENE 0.000 0.046 0.365 0.046 0.046 0.182 0.000 0.000 0.000 0.684 E 0.000 0.000 0.137 0.091 0.273 0.182 0.046 0.000 0.000 0.729 ESE 0.000 0.091 0.228 0.228 0.228 0.091 0.091 0.000 0.000 0.957 SE 0.000 0.000 0.046 0.228 0.228 0.228 0.182 0.000 0.000 0.912 SSE 0.000 0.000 0.137 0.137 0.319 0.137 0.228 0.046 0.000 1.003 S 0.000 0.000 0:137 0.091 0.046 0.091 0.182 0.000 0.000 0.547 SSW 0.000 0.046 0.091 0.091 0.000 0.137 0.137 0.046 0.000 0.547 SW 0.000 0.000 0.046 0.091 0.182 0.000 0.000 0.000 0.000 0.319 WSW 0.000 0.091 0.091 0.000 0.000 0.000 0.000 0.000 0.000 0.182 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 0.046 0.046 0.046 0.000 0.000 0.000 0.137 NW 0.000 0.000 0.046 0.046 0.046 0.137 0.000 0.000 0.000 0.273 NNW 0.000 0.000 0.091 0.046 0.000 0.137 0.000 0.046 0.000 0.319 SUBTOTAL 0.000 0.319 1.459 1.231 1.459 1.914 1.641 0.319 0.000 8.341 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2194 TOTAL HOURS OF STABILITY CLASS G 183 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 183 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON AT BETWEEN 10.03 AND 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 90.29 METER LEVEL MEAN WIND SPEED = 8.28 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E2-125

Enclosure 3 Browns Ferry Nuclear Plant Units 1, 2, and 3 2011 Effluent and Waste Disposal Annual Report (See attached)

E3-1

2011 Effluent and Waste Disposal Annual Report 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 Browns Ferry Nuclear Plant (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 millirad (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. lodines 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.

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

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

2011 Effluent and Waste Disposal Annual Report 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 half-lives greater than eight days in gaseous effluent released 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 .iCi per milliliter (ml) total activity.

Ill. 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

2011 Effluent and Waste Disposal Annual Report Ill. Measurements and Approximations of Total Radioactivity (continued)

B. lodines and Particulates:

1. 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 strontium-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, strontium-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. No liquid or gaseous concentration or dose limits were exceeded.

E3-4

2011 Effluent and Waste Disposal Annual Report Supplemental Information IV. Batch Quarter Quarter Quarter Quarter A. Liquid Units 1 2 3 4

1. Number of batches released Each 7 11 - -

2. Total time for batches released Minutes 1451 2519

3. Maximum time period for a batch release Minutes 240 276 -

4. Average time period for a batch release Minutes 207 229 -

5. Minimum time period for a batch release Minutes 100 15 ,

6. Average BFN beach flow during period ft3/sec 66423 49084 -

of release into the river stream B. Gaseous None C. Abnormal/Unplanned Releases*

Number of Releases: 2 Type: One Liquid/One Gas Total Activity Released (Curies)

Destination Nuclide Quarter 1 Quarter 2 Quarter 3 Quarter 4 Leak to H-3 6.44E-02 River F-18 5.80E-04 Air Ba-139 9.01E-08 Cs- 138 5.03E-07 Kr-85m 2.66E-03 Ar-41 8.26E-03 H-3 5.54E-04 Sr-89 6.08E-08

- An explanation of any liquid or gaseous abnormal/unexplained releases shall be documented in the summary.

E3-5

2011 Effluent and Waste Disposal Annual Report Liquid Effluents - Summation of All Releases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

A. Fission and Activation Products (Does not include tritium, gases, Alpha)

1. Total Release Curies 1.32E-02** 1.50E-03 9

2. Average Diluted Concentration Released During Period gCi/ml 1.73E-09** 2.03E-10

3. Percent of Applicable Limit %

B. Tritium

1. Total Releases Curies 1.70E+00** 3.51E+00 6

2. Average Diluted Concentration Released During Period ýiCi/ml 2.23E-07** 4.73E-07

3. Percent of Applicable Limit %

C. Dissolved and Entrained Noble Gases

1. Total Releases Curies 2.15E-04 1.79E-05 8

2. Average Diluted Concentration Released During Period gCi/ml 2.82E-1 1 2.41E-12

3. Percent of Applicable Limit %

D. Gross Alpha Radioactivity

1. Total Releases Curies 48

2. Average Diluted Concentration Released During Period ICi/ml *

E. Volume of Liquid Waste to Discharge Canal (Prior to dilution) Liters 5.95E+05 1.38E+06 - 3 F. Volume of Dilution Water for Period Liters 7.62E+09 7.42E+09 - 10 G. Total CCW Gigagal 2.24E+02 1.99E+02

- Not Detected. Dilution flow was not determined for the abnormal release.

- - Includes activity from abnormal releases.

- The applicable limit is expressed in terms of dose. See Enclosure 1.

E3-6

2011 Effluent and Waste Disposal Annual Report Liquid Releases - Batch Mode CURIES Isotope (Required by Regulatory (REG) Guide 1.21) Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. Ba- 140 7.59E-05 4.94E-06 -

2. Ce-141 * *

3. Co-58 3.90E-04 1.71E-05

4. Co-60 5.77E-03 5.14E-04

5. Cr-51 * *

6. Cs-134 1.70E-04 2.65E-05

7. Cs-137 2.95E-03 8.44E-04

8. Fe-59 * *

9. 1-131 4.58E-05 3.37E-06

10. La- 140 8.18E-05 3.56E-06

11. Mn-54 5.65E-04 3.87E-05

12. Mo-99 8.40E-05 2.85E-06

13. Nb-95 * *

14. Sr-89 1.13E-03 *

15. Sr-90 1.43E-05 *

16. Tc-99m 8.20E-05 2.78E-06

17. Xe-133 1.31E-04 *

18. Xe-135 8.37E-05 6.97E-06

19. Zn-65 1.78E-04 1.29E-05

20. Zr-95 * *

- Not Detected.

E3-7

2011 Effluent and Waste Disposal Annual Report Liquid Releases - Batch Mode CURIES Isotope Others (Not Required by REG Guide 1.21) Quarter 1 Quarter 2 Quarter 3 Quarter 4

1. F-18 6.37E-04* 5.24E-06

2. Fe-55 1.08E-04 3 Mn-56 4 Zn-69m 8.95E-07 5 Kr-88 6 Nb-97 7 Ag-ll0m 4.93E-04 1.82E-05 8 Sb-124 5.57E-05 2.98E-06 9 1-133 10 As-76 2.60E-05 11 Na-24 3.02E-04 12 Y-91m 1.70E-05 13 Xe-133m 1.09E-05

- Activity from abnormal release.

- - Not Detected.

E3-8

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Summation of All Releases Units Quarter 1 Quarter 2 Quarter 3 Quarter 4 Error %

A. Fission and Activation Gases

1. Total Releases Curies .09E-02*

1* ** ** 45

2. Average Release Rate for Period jtCi/sec ** 6.65E-O3* ** **

3. Percent of Applicable Limit B. lodines

1. Total Iodine-131 Curies 3.32E-03 3.25E-04 2.68E-03 2.03E-03 36

2. Average Release Rate for Period pCi/sec 4.27E-04 4.13E-04 3.38E-04 2.55E-04

3. Percent of Applicable Limit C. Particulates

1. Particulates with half-lives Curies 1.82E-03 1.39E-03* 1.81E-03 9.58E-04 35

> eight days

2. Average Release Rate for Period *tCi/sec 2.34E-04 1.77E-04* 2.28E-04 1.21E-04

3. Percent of Applicable Limit

4. Gross Alpha Radioactivity Curies ** **

D. Tritium

1. Total Release Curies 2.58E+01 1.56E+01* 2.57E+01 3.03E+01 21

2. Average Release Rate for Period pCi/sec 3.32E+00 1.99E+00* 3.23E+00 3.81E+00

3. Percent of Applicable Limit %

E. Carbon-14***

1. Total Release Curies 8.45E+00 6.32E+00 9.81E+00 9.95E+00

2. Total as CO 2 Curies 8.03E+00 6.O1E+00 9.32E+00 9.45E+00

- Includes Activity from Abnormal Release

- - Not Detected.

- Estimated using EPRI methodology provided in EPRI Report 1021106.

- Applicable Limits are expressed in terms of dose. See Enclosure 1.

E3-9

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Elevated Release CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4 I Fission Gases Kr-85m *

Kr-85 *

Kr-87 *

Kr-88 *

Xe-133 *

Xe-135m

Xe-135 *

Xe-138 *

Others (specify) *

Total for Period * *

2. lodines 1-131 5.5 1E-04 7.86E-04 6.36E-04 7.28E-04 1-133 1. 11E-03 1.13E-03 1.39E-03 1.43E-03 Total for Period 1.66E-03 1.92E-03 2.03E-03 2.16E-03

- Not Detected.

E3-10

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Elevated Release CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Sr-89 1.40E-04 1.28E-04 1.99E-04 1.82E-04 Sr-90 ** ** ** **

Sr-91 8.25E-04 3.43E-04 2.61E-03 4.09E-03 Cs-134 ** ** ** **

Cs-137 ** ** ** **

Ba-140 8.15E-05 7.23E-05 1.87E-04 3.34E-04 La-140 4.91E-05 4.53E-05 1.24E-04 2.21E-04 Others (Au- 199) ** ** 3.15E-06 2.76E-06 Others (Zn-69m) ** ** ** 7.06E-06 RB-89 ** ** 5.85E-02 **

Y-91m 8.92E-04 6.23E-04 1.73E-03 2.55E-03 Cs-138 1.1OE-01 1.64E-02 2.85E-02 1.86E-02 Ba-139 6.54E-02 6.62E-02 1.86E-01 2.82E-01 Total for Period* 1.78E-01 8.38E-02 2.78E-01 3.08E-01

4. Tritium 1.43E+00 4.12E+00 5.38E+00 3.60E+00

5. Carbon-14*** 8.45E+00 6.32E+00 9.8 1E+00 9.95E+00

- Includes all nuclides, even those with less than an eight day half-life.

- - Not Detected.

- Estimated using EPRI methodology provided in EPRI Report 1021106.

E3-11

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Ground Release CURIES Quax-er 1 Quarter 2 Quarter 3 Quarter 4

1. Fission Gases Kr-85m

2.66E-03*

Kr-85 * *

Kr-87 * *

Kr-88 * *

Xe-133 * *

Xe-135m * *

Xe-135 * *

Xe-138 * *

Ar-41

8.26E-03"* *

Other (specify) * *

Total for Period * * *

2. lodines 1-131 4.29]E-04 2.46E-04 5.39E-04 5.93E-04 1-133 1.73] E-03 1.17E-03 1.88E-03 2.49E-03 Total for Period 2.16]E-03 1.41E-03 2.42E-03 3.08E-03

- Not Detected.

- - Activity from Abnormal Release.

E3-12

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Ground Release CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates*

Co-60 ** ** ** **

Sr-89 4.95E-05 3.32E-05*** 4.48E-05 5.05E-05 Sr-90 ** ** ** **

Cs-134 ** ** ** **

Cs-137 ** ** ** **

Ba-140 3.99E-05 1.59E-05 4.37E-05 8.45E-05 La-140 7.23E-06 ** 1.14E-05 2.67E-05 Other (Sr-91) ** 9.66E-05 1.68E-04 4.64E-04 Other (Rb-89) ** ** 3.94E-03 **

Other (Au- 199) ** ** ** 2.23E-06 Y-91m 1.44E-03 6.12E-04 8.84E-04 1.57E-03 Cs-138 1.80E-02 9.95E-03"** 1.96E-02 8.26E-02 Ba-139 4.06E-02 2.60E-02*** 4.05E-02 8.49E-02 Total for Period* 6.01E-02 3.67E-02 6.52E-02 1.70E-01

4. Tritium 5.13E+00 1.47E+00*** 3.43E+00 7.41E+00

- Include all nuclides even those with less than an eight day half-life.

- - Not Detected.

** - Includes Activity from Abnormal Release.

E3-13

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Mixed Mode Release*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4 I Fission Gases Kr-85m ** ** ** **

Kr-85 ** ** ** **

Kr-87 ** ** ** **

Kr-88 ** ** ** **

Xe-133 ** ** ** **

Xe-135m ** ** ** **

Xe-135 ** ** ** **

Xe-138 ** ** ** **

Other (specify) ** ** ** **

Total for Period ** ** ** **

2. lodines 1-131 2.34E-03 2.21E-03 1.51E-03 7.03E-04 1-132 3.52E-03 ** ** **

1-133 1.19E-02 1.12E-02 6.58E-03 2.95E-03 1-135 9.97E-04 1.75E-03 ** **

Total for Period 1.88E-02 1.52E-02 8.09E-03 3.65E-03

- The Reactor Building and Radwaste Building are treated as split-level releases.

- - Not Detected.

E3-14

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Mixed Mode Release*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates**

Sr-89 6.73E-05 7.19E-05 3.19E-04 3.84E-05 Ce-141 6.25E-06 5.70E-06 Y-92 2.99E-03 Cs-137 1.91E-06 2.92E-06 Ba-140 8.82E-04 5.53E-04 2.55E-04 1.05E-04 La- 140 6.57E-04 2.76E-04 1.14E-04 2.43E-05 Na-24 2.48E-05 Cr-51 2.22E-04 2.31E-05 Mn-54 2.60E-05 1.07E-05 3.91E-06 1.47E-05 Mn-56 4.90E-03 5.38E-03 5.82E-03 1.30E-02 Co-58 7.66E-05 2.65E-05 2.71E-05 5.45E-05 Co-60 1.98E-04 4.45E-04 7.09E-04 8.40E-05 Zn-65 2.61E-05 2.36E-05 6.09E-06 Zn-69m 5.35E-05 5.27E-05 2.71E-05 9.1OE-05 Y-91m 1.29E-02 7.96E-03 3.90E-03 1.51E-03 Sr-91 1.91E-02 8.52E-03 2.14E-03 1.65E-04 Sr-92 8.62E-03 1.52E-03

- 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.

- Not Detected.

E3-15

2011 Effluent and Waste Disposal Annual Report Gaseous Effluents - Mixed Mode Release*

CURIES Quarter 1 Quarter 2 Quarter 3 Quarter 4

3. Particulates** (Continued)

Mo-99 2.19E-06 6.86E-06 3.30E-06 Tc-99m 2.14E-06 6.69E-06 3.22E-06 Cs-138 3.46E-02 2.81E-02 1.34E-02 Ba-139 3.18E-01 2.OOE-01 1.55E-01 6.30E-02 Total for Period** 3.69E-01 2.59E-01 1.96E-01 9.15E-02

4. Tritium 1.92E+01 1.OOE+O1 1.69E+01 1.93E+OI

- 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.

- Not Detected.

E3-16

2011 Effluent and Waste Disposal Annual Report Solid Radioactive Waste Shipped for Processing or Disposal Resins, Filters, and RevaportorsBotomsVolume Evaporator Bottoms Curies Shipped Waste Class ft3 m3 Curies A 3.93E+3 1.11E+02 1.79E+02 B 0.OOE+00 0.OOE+00 0.OOE+00 C 0.OOE+00 0.OOE+00 0.OOE+00 ALL 3.93E+03 1.11E+02 1.79E+02 Major Nuclides for the Above Table:

Nuclide Percentage Curies

1) Co-60 4.9 1E+01 8.80E+01

2) H-3 9.99E-04 1.79E-03

3) Fe-55 1.59E+01 2.84E+01

4) Mn-54 5.25E+00 9.41E+00

5) Zn-65 2.62E+00 4.70E+00

6) Ni-63 1.85E+00 3.3 1E+00

7) Na-24 4.45E-07 7.98E-07

8) Ag-ll0m 1.60E+00 2.86E+00

9) Co-58 2.2 1E+00 3.96E+00

10) Cr-51 4.67E-0 1 8.37E-01

11) Ce- 144 1.62E-01 2.90E-01

12) Co-57 3.97E-04 7.1 1E-04

13) C-14 9.82E-02 1.76E-01

14) Sr-92 6.92E- 19 1.24E- 18

15) Fe-59 5.07E-02 9.09E-02

16) Sr-90 3.15E-02 5.65E-02

17) Zr-97 1.70E-07 3.05E-07

18) 1-133 4.03E-09 7.22E-09

19) 1-131 4.98E-01 8.92E-01

20) Cs-138 1.19E-61 2.14E-61

21) Cs-137 1.79E+01 3.20E+01

22) Cs-134 1.23E+00 2.2 1E+00

23) La- 141 2.14E- 13 3.84E- 13

24) La- 140 4.08E-04 7.31E-04

25) Ce- 141 2.74E-01 4.91E-01

26) Ba- 140 7.20E-0 1 1.29E+00

27) Sb- 125 4.02E-04 7.20E-04

28) Sb- 124 2.40E-02 4.30E-02

29) Mo-99 1.11E-04 1.98E-04

30) Zr-95 9.94E-03 1.78E-02

31) Tc-99 3.07E-02 5.50E-02

32) Pu-241 2.70E-02 4.83E-02

33) Sr-89 1.50E-03 2.68E-03 E3-17

2011 Effluent and Waste Disposal Annual Report Nuclide Percentage Curies

34) Tc-99m 9.43E- 11 1.69E-10

35) Am-241 3.24E-04 5.8 1E-04

36) Cm-242 1.09E-05 1.96E-05

37) Cm-243 2.25E-04 4.03E-04

38) Cm-244 2.68E-05 4.8 1E-05

39) Pu-239 9.60E-06 1.72E-05

40) Pu-240 9.60E-06 1.72E-05

41) Pu-238 2.95E-05 5.28E-05

42) Cu-64 7.42E-14 1.33E-13

43) Zn-69m 1.63E-12 2.92E-12 Solid Radioactive Waste Shipped for Processing or Disposal Dry Active Waste Volume Curies Shipped Waste Class ft3 m3 Curies A 5.29E+04 1.50E+03 4.51E-01 B O.OOE+00 O.OOE+00 O.OOE+00 C O.OOE+00 O.OOE+00 O.OOE+00 ALL 5.29E+04 1.50E+03 4.51E-01 Major Nuclides for the Above Table:

Nuclide Percentage Curies

1) Co-60 6.52E+01 2.94E-01

2) Ag-ll0m 4.13E+00 1.86E-02

3) Fe-55 1.20E+01 5.43E-02

4) Zn-65 1.97E+00 8.86E-03

5) Cs-137 1.17E+01 5.27E-02

6) Mn-54 4.13E+00 1.86E-02

7) Ni-63 7.57E-01 3.41E-03 2.1 0E-0

8) H-3 4.66E-02 4

9) Sr-89 0.OOE+00 0.OOE+00

10) Sr-90 1.08E-02 4.87E-05

11) Cs- 134 0.OOE+00 0.OOE+00

12) Co-58 0.OOE+00 O.OOE+O0 E3-18

2011 Effluent and Waste Disposal Annual Report Solid Radioactive Waste Shipped for Processing or Disposal Irradiated Components Volume Curies Shipped Waste Class ft3 m3 Curies A 0.OOE+00 O.OOE+00 0.OOE+00 B 0.OOE+00 0.OOE+00 0.00E+00 C 0.OOE+00 0.OOE+00 0.00E+00 ALL 0.OOE+00 O.OOE+00 0.OOE+00 Major Nuclides for the Above Table: N/A Solid Radioactive Waste Shipped for Processing or Disposal Other Omied Waste Pa ges Volume Curies Shipped (Combined Packages)

Waste Class ft3 m3 Curies A 4.64E+03 1.31E+02 1.81E+00 B O.OOE+00 0.OOE+00 O.OOE+00 C O.OOE+00 0.OOE+00 O.OOE+00 ALL 4.64E+03 1.31E+02 1.81E+00 Major Nuclides for the Above Table:

Nuclide Percentage Curies

1) Co-60 5.64E+O1 1.02E+00

2) Cs-137 1.62E+01 2.93E-01

3) Ag-110m 1.37E+00 2.48E-02

4) Fe-55 1.62E+01 2.92E-01

5) Zn-65 2.16E+00 3.90E-02

6) Mn-54 3.88E+00 7.02E-02

7) Ni-63 1.51E+00 2.72E-02

8) Cs-134 1.31E+00 2.37E-02

9) Co-58 5.75E-01 1.04E-02

10) H-3 1.24E-02 2.24E-04

11) Pu-241 2.45E-02 4.42E-04

12) Ce- 144 1.47E-01 2.66E-03

13) C-14 7.03E-02 1.27E-03

14) Co-57 1.81E-03 3.28E-05

15) Sr-89 9.85E-02 1.78E-03

16) Sr-90 2.69E-02 4.86E-04

17) Tc-99 1.60E-04 2.89E-06

18) Pu-238 2.81E-06 5.07E-08 E3-19

2011 Effluent and Waste Disposal Annual Report Nuclide Percentage Curies

19) Am-241 2.55E-04 4.6 1E-06

20) Cm-242 4.84E-06 8.75E-08

21) Cm-243 1.86E-04 3.37E-06 Solid Radioactive Waste Shipped for Processing or Disposal Sum of All Low-Level Waste Shipped from Volume Curies Shipped Site Waste Class ft3 m3 Curies A 6.15E+04 1.74E+03 1.81E+02 B 0.OOE+00 O.OOE+00 0.OOE+00 C 0.OOE+00 0.OOE+00 0.OOE+00 ALL 6.15E+04 1.74E+03 1.81E+02 Major Nuclides for the Above Table:

Nuclide Percentage Curies

1) Co-60 4.92E+01 8.93E+01

2) Cs-137 1.78E+01 3.23E+01

3) Fe-55 1.59E+01 2.88E+01

4) Mn-54 5.24E+00 9.50E+00

5) Zn-65 2.62E+00 4.75E+00

6) Ni-63 1.84E+00 3.34E+00

7) Cs- 134 1.23E+00 2.23E+00

8) Ag-il0m 1.60E+00 2.90E+00

9) Co-58 2.19E+00 3.98E+00

10) Cr-51 4.61E-01 8.37E-01

11) Ce-144 1.61E-01 2.92E-01

12) 1-131 4.92E-01 8.92E-0 1

13) C- 14 9.76E-02 1.77E-01

14) Ba-140 7.11E-01 1.29E+00

15) Fe-59 5.01E-02 9.09E-02

16) Sr-90 3.15E-02 5.7 1E-02

17) Na-24 4.40E-07 7.98E-07

18) Sb- 124 2.37E-02 4.30E-02

19) Ce- 141 2.71E-01 4.91E-01

20) La- 141 2.12E-13 3.84E-13

21) Sb-125 3.97E-04 7.20E-04

22) Cs-138 1.18E-61 2.14E-61

23) Tc-99m 9.32E- 11 1.69E- 10

24) Mo-99 1.09E-04 1.98E-04

25) Zr-97 1.68E-07 3.05E-07

26) Zr-95 9.81E-03 1.78E-02

27) Pu-241 2.68E-02 4.87E-02 E3-20

2011 Effluent and Waste Disposal Annual Report Nuclide Percentage Curies

28) Tc-99 3.03E-02 5.50E-02

29) Sr-89 2.46E-03 4.46E-03

30) H-3 1.22E-03 2.22E-03

31) Co-57 4.1OE-04 7.44E-04

32) Am-241 3.23E-04 5.86E-04

33) Sr-92 6.84E-19 1.24E- 18

34) Cm-242 1.09E-05 1.97E-05

35) Cm-243 2.24E-04 4.07E-04

36) Cm-244 2.65E-05 4.8 1E-05

37) La-140 4.03E-04 7.3 1E-04

38) Pu-239 9.48E-06 1.72E-05

39) Pu-240 9.48E-06 1.72E-05

40) Pu-238 2.92E-05 5.29E-05

41) 1-133 3.98E-09 7.22E-09

42) Cu-64 7.33E-14 1.33E-13

43) Zn-69m 1.61E-12 2.92E-12 E3-21

2011 Effluent and Waste Disposal Annual Report Summary of AbnormallUnplanned Releases The release of radioactive material to the environment from BFN 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 CFR 20 Appendix B and 10 CFR 50 Appendix I.

One abnormal liquid release occurred in 2011. A leak from a roughing cooler was detected to BFN Unit 3 station sump on January 13, 2011 (Problem Evaluation Report (PER) 324700). The BFN Unit 3 station sump sample analyzed on December 9, 2011, was clean but was used as the beginning period for the leak identified in 2011. The period of the release between December 9, 2010, and January 1, 2011, was reported in the Annual Radioactive Effluent Release Report for 2010. The BFN Unit 3 station sump was found to be clean on February 13, 2011.

One abnormal gaseous release occurred in 2011. On April 21, 2011, it was discovered that the ductwork access door below stack damper (2-DMP-66-92A) was missing bolts and leaking off-gas (PER 359503). This pathway, if secured, would have discharged through the elevated plant stack. Since the actual elevation of the leak was near ground level, the release was included in the ground level data.

Ground Water Monitoring Onsite groundwater monitoring locations were sampled during the year. These locations were not part of the BFN Radiological Environmental Monitoring Program (REMP). The purpose of these shallow wells was to monitor for potential leaks from plant equipment.

Trace levels of tritium were detected in several of these monitoring locations. BFN initiated a groundwater study to identify the source of the tritium. Results from a groundwater study completed in June 2006 suggest the source of the tritiated groundwater is associated with the Radwaste/Condensate Transfer tunnel. Water that may leak into the tunnel could egress via expansion joints and/or cracks through the tunnel wall. These joints and/or cracks were grouted during 2008 with several more leaks grouted in 2010. The highest concentration identified in the groundwater for the year was 1013 pCi/L. Groundwater and surface water level measurements during the study indicated the return channel and subsequently the Tennessee River will ultimately be recipient to tritiated groundwater discharge from the site. The estimated groundwater/channel water dilution ratio is 1:20,000 at a rate of approximately 0.5 gpm.

The tritium concentrations obtained in 2011 from these non-REMP wells are listed below.

Well ID Date Activity in pCi/L BH25 (1309) 5/5/11 590 DEWAT A(1311) 5/5/11 750 DEWAT A(1311) 10/20/11 559 DEWAT E(1312) 5/5/11 1013 E3-22

2011 Effluent and Waste Disposal Annual Report Summary of AbnormallUnplanned Releases Missed Compensatory Samples During the reporting period, January 1, 2011, through December 31, 2011, there was one missed compensatory sample. On April 27, 2011, six effluent continuous air monitors were found not operating due to the severe weather that occurred near the plant which resulted in the loss of off-site power and the shutdown of all three units. All six of the monitors were reset and a source check was performed to determine operability. The 1-RM-90-251, Turbine Building Effluent Radiation Monitor, failed the source check and remained inoperable. This allowed insufficient time to set up grab sample and flow readings. The monitor was declared inoperable on April 27, 2011, at 2330 hours0.027 days 0.647 hours 0.00385 weeks 8.86565e-4 months and the first flow and sample was obtained on April 28, 2011, at 0525 hours0.00608 days 0.146 hours 8.680556e-4 weeks 1.997625e-4 months .

The ODCM requires a compensatory sample once per 8 hours9.259259e-5 days 0.00222 hours 1.322751e-5 weeks 3.044e-6 months and flow once per 4 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months . This first flow reading exceeded the four hour time requirement. No activity was found in the sample. (PER 362404)

Liquid Radwaste or Temporary Storage Tanks BFN does not have outside liquid radwaste or temporary storage tanks that can be discharged directly to the environs (Technical Requirements Manual 3.7.1).

Changes to the Radwaste System and Changes to the Process Control Program In calendar year 2011, BFN had no changes to the radwaste system and no changes to the Process Control Program.

E3-23

Enclosure 4 Browns Ferry Nuclear Plant Units 1, 2, and 3 2011 Inoperable Radiological Effluent Instrumentation Report (See Attached)

E4-1

2011 Inoperable Radiological Effluent Instrumentation Report This report is to comply with Browns Ferry Nuclear Plant 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 1, 2011, through December 31, 2011, there were no radioactive gaseous effluent monitoring instruments and no liquid effluent monitoring instruments out of service for greater than 30 days.

E4-2

ML12123A017

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