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Radiological Impact Assessment Rept 1995.
	ML18038B650
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Site:	Browns Ferry
Issue date:	12/31/1995
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ENCLOSURE1 TENNESSEE VALLEYAUTHORITY BROWNS FERRY NUCLEAR PLANT (BFN)

UNITS I, 2, AND 3 RADIOLOGICALIMPACT ASSESSMENT REPORT 1995 TABLE OF CON'ANTS Introduction Dose Limits Dose Calculations

~ IV.

V.

Doses from Airborne EQluents Doses from Liquid EQluents Population Doses VII. OQsite Direct Radiation Dose Dose to a Member of the Public Inside the Site Boundary Total Dose

'P6040i0030 96032i PDR ADQCK 0500025'7 PDR R

TABLE OF CONTENTS (Continued)

Listing of Tables Table 1 - Doses from Airborne Eflluents - First Quarter El-8 Table 2 - Doses from Airborne Effluents - Second Quarter El-9 Table 3 - Doses from Airborne EQluents - Third Quarter El-10 Table 4 - Doses from Airborne Effluents - Fourth Quarter El-11 Table 5 - Doses from Liquid Effluents - First Quarter El-12 Table 6 - Doses from Liquid Effluents - Second Quarter El-13 Table 7 - Doses from Liquid Effluents - Third Quarter El-14 Table 8 - Doses from Liquid Effluents - Fourth Quarter El-15 Table 9 - Total Dose from Fuel Cycle El-16 Table 10 - Joint Frequency Distribution in Percent for Ground El Level Releases - First Quarter El-24 Table 11 - Joint Frequency Distribution in Percent for Ground E1 Level Releases - Second Quarter El-32 Table 12 - Joint Frequency Distribution in Percent for Ground El Level Releases - Third Quarter E140 Table 13 - Joint Frequency Distribution in Percent for Ground Eldl-Level Releases - Fourth Quarter El<8 Table 14 - Joint Frequency Distribution in Percent for Split Level E149-Releases Ground Level Portion - First Quarter El-56 Table 15 - Joint Frequency Distribution in Percent for Split Level El Releases Ground Level Portion - Second Quarter El<4 Table 16 - Joint Frequency Distribution in Percent for Split Level E145-Releases Ground Level Portion - Third Quarter El-72 Table 17 - Joint Frequency Disbribution in Percent for Split Level El Releases Ground Level Portion - Fourth Quarter El-80 Table 18 - Joint Frequency Distribution in Percent for Split Level El Releases Elevated Level Portion - First Quarter El-88

TABLE OF CONTENTS (Continued)

Listing of Tables Table 19 - Joint Frequency Distribution in Percent for Split Level E1 Releases Elevated Level Portion - Second Quarter E1-96 Table 20 - Joint Frequency Distribution in Percent for Split Level E1 Releases Elevated Level Portion - Third Quarter E1-104 Table 21 - Joint Frequency Distribution in Percent for Split Level E1-105-Releases Elevated Level Portion - Fourth Quarter E1-112 Table 22 - Joint Frequency Distribution in Percent for Stack El-113-Releases - First Quarter E1-120 Table 23 - Joint Frequency Distribution in Percent for Stack El-121-Releases - Second Quarter E1-128 Table 24 - Joint Frequency Distribution in Percent for Stack El-129-Releases - Third Quarter E1-136 Table 25 - Joint Frequency Distribution in Percent for Stack E1-137-Releases - Fourth Quarter E1-144 El-lb

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 L INTRODUCTION Potential doses to maximum individuals and the population around Browns Ferry are calculated for each quarter as required in Section 5.2 of the Offsite Dose Calculation Manual (ODCM). Measured plant releases for the reporting period are used to estimate these doses. Dispersion of radioactive eQluents in the environment is estimated using meteorological data and riverflow data measured during the period. In this report, the doses resulting from releases are described and compared to limits established for Browns Ferry.

II. DOSE LIMITS The ODCM specifies limits for the release of radioactive eQluents, as well as limits for doses to the general public from the release of radioactive eQluents. 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 eQluent releases are As Low As Reasonably Achievable.

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

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

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

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

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

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

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

" and-Less than or equal to 5 mrem per quarter and 10 mrem per year (per reactor unit) to any organ.

The limitfor the total effective dose equivalent to an individual member of the public inside the site boundary is:

Less than or equal to 100 mrem per year.

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

Less than or equal to 25 mrem per year to the total body, Less than or equal to 75 mrem per year to the thyroid, aild-Less than or equal to 25 mrem per year to any other organ.

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Estimated doses to the public are determined using computer models (the Gaseous Emuent Licensing Code, GELC, and the Quarterly Water Dose Assessment Code, QWATA). These models are based on guidance provided by the NRC (in Regulatory Guides l. 109, 1.111 and 1.113) for determining the potential dose to individuals and populations living in the vicinity of the plant. The area around the plant is analyzed to determine the pathways through which the public may receive a dose. The doses calculated are a representation of the dose to a "maximum exposed individual." Some of the factors used in these calculations (such as ingestion rates) are maximum values. Many of these factors are obtained horn NUREG/CR-1004. The values chosen will tend to overestimate the dose to this "maximum" person. The expected dose to actual individuals is lower. The calculated doses are presented in Tables 1, 2, 3, 4, 5, 6, 7, 8, and 9.

IV. DOSES FROM AIRBORNE EFFLUENTS For airborne efHuents, 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 inge'stion of milk and beef which contains radioactivity deposited from the atmosphere onto vegetation and subsequently eaten by milk and beef animals.

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

Releases from the turbine building are considered ground-level releases. The ground-level Joint Frequency Distribution (JFD) is derived from windspeeds and directions measured 10 meters above ground and from the vertical temperature difference between 10 and 45 meters, and are presented for each quarter in Tables 10, ll, 12, and 13.

Releases from the radwaste and reactor buildings are considered split-level releases. Portions of the release are treated as elevated while other portions are considered ground-level 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 efHuent vent, one for the elevated releases and one for the ground-level releases. The ground-level portion of the split-level JFD is based on wind speeds and directions measured 10 meters above ground-level and from the vertical temperature difference between 10 and 45 meters. The elevated portion of the split-level JFD is based on wind speeds and direction measurements at the 46-meter level and the vertical temperature difference between 45 and 90 meters. Both of these JFDs are given for each quarter in Tables 14, 15,16, 17, 18, 19, 20, and 21.

Releases from the stack are considered to be elevated-level releases. The JFDs for elevated releases are based on wind directions and wind speeds measured at 93 meters and the vertical temperature difference between 45 and 90 meters, and are given for each quarter in Tables 22, 23, 24, and 25.

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Meteorolo cal Data Meteorological variables at Browns Ferry are measured continuously. Measurements collected include wind speed, wind direction, and temperature at heights of 10, 46 and 91 meters above the ground. Quarterly joint frequency distributions (JFDs) are calculated for each release point using the appropriate levels of meteorological data. A joint frequency distribution gives the percentage of the time in a quarter that the wind is blowing out of a particular upwind compass sector in a particular range of wind speeds for a given stability class A through G. The wind speeds are divided into nine wind speed ranges. Calms are distributed by direction in proportion to the distribution of 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 is not believed to cause any significant effects on the transport and dispersion of gaseous efHuents from the plant. Within 30 kilometers of BFN, the terrain is mostly gently rolling hills (3040 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. Then, the lower layer (1046 meters) stability class tends to be more stable than would be expected. However, during this infrequent condition, dose estimates willbe conservative.

External Ex osure Dose Dose estimates for maximum external air dose (gamma-air and beta-air doses) are made for points at and beyond the unrestricted area boundary as described in the 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 estimated for the nearest residence in each sector. The residence with the highest dose is then selected from all sectors.

~Or an Doao Doses to organs due to releases of airborne efiluents are estimated for the inhalation, ground contamination, and ingestion pathways. The ingestion pathway is further divided into four possible contributing pathways:

ingestion of cow/goat milk, ingestion of beef, and ingestion of vegetables. Doses from applicable pathways are calculated for each real receptor location identified in the most recent land use survey. To determine the maximum organ dose, the doses from the pathways are summed for each receptor. For the ingestion dose, however, only those pathways that exist for each receptor are considered in the sum, i.e., milk ingestion doses are included only for locations where milk is consumed without commercial preparation and vegetable ingestion is included only for those locations where a garden is identified. To conservatively account for beef ingestion, a beef ingestion dose equal to that for the highest unrestricted area boundary location is added to each identified receptor. For ground contamination, the dose added to the organ dose being calculated is the total body dose calculated for that location, i.e., it is assumed that the dose to an individual organ is equal to the total body dose.

The maximum organ doses, thyroid doses, and total body doses from airborne efiluents are presented in Tables 1, 2, 3, and 4.

El<

0 Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 V. DOSES FROM LI UID EFFLUENTS For liquid eQluents, the public can be exposed to radiation from three sources: the ingestion of water from the Tennessee River, the ingestion of fish caught in the Tennessee River, and direct exposure from radioactive material deposited on the river shoreline sediment (recreation).

The concentrations of radioactivity in the Tennessee River are estimated by a computer model which uses measured hydraulic data downstream of Browns Ferry. Parameters used to determine the doses are based on guidance given by the NRC (in Regulatory Guides 1.109) for maximum ingestion rates, exposure times, etc.

Wherever possible, parameters used in the dose calculation are site specific use factors determined by TVA.

The models that are used to estimate doses, as well as the parameters input to the models, are described in detail in the Browns Ferry Nuclear Plant ODCM.

Li uid Release Points and River Data Radioactivity concentrations in the Tennessee River are calculated assuming that releases in liquid efiluents are continuous. All routine liquid releases from Browns Ferry, located at Tennessee River Mile 294, are made through difiusers which extend into the Tennessee River. It is assumed that releases to the river through these diffusers will initially be entrained in one-fifth of the water which flows past the plant. The QWATA code makes the assumption that this mixing condition holds true until the water is completely mixed at the first downstream dam, at Tennessee River Mile 283.0.

Doses are calculated for locations within a 50 mile radius downstreain of the plant site. The maximum potential recreation dose is calculated for a location immediately dowitstrearn from the plant outfall. The maximum individual dose from ingestion of fish is assumed to be that calculated for the consumption of fish caught anywhere between the plant and the first downstream dam (Wheeler Dam). The maximum individual dose from drinking water is assumed to be that calculated at the nearest downstream public water supply (Florence). This could be interpreted as indicating that the maximum individual, as assumed for liquid releases from Browns Ferry, is an individual who obtains all of his drinking water at Florence, consumes fish caught from the Tennessee River between BFN and Wheeler Dam, and spends 500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br /> per year on the shoreline just below the outfall from Browns Ferry. Dose estimates for the maximum individual due to liquid eQluents for each quarter in the period are presented in Tables 5, 6, 7, and 8, along with The average river flows past the plant site for the periods.

VI. POPULATION DOSES Population doses due to airborne eQluents are calculated for an estimated 627,000 persons living within a 50-mile radius of the plant site. Doses from external pathways and inhalation are based on the 50-mile human population distribution. Ingestion population doses are calculated assuming that each individual consumes milk, vegetables, and meat produced with the sector annulus in which he resides.

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

Population dose estimates for airborne and liquid efiluents are presented in Tables 1, 2, 3, 4, 5, 6, 7, and 8.

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 VII. OFFSITE DIRECT RADIATIONDOSE External gamma radiation levels were measured by thermoluminescent dosimeters (TLDs) deployed around BFN as part of the offsite Radiological Environmental Monitoring Program (REMP). The quarterly gamma radiation levels determined from these TLDs during this reporting period averaged approximately 15.8 mrem/quarter at onsite (at or near the site boundary) stations and approximately 13.6 mrem/quarter at offsite stations, or approximately 2.2 mrem/quarter higher onsite than at offsite stations. This is consistent with levels reported at TVA's non operating nuclear power plant construction sites where the average radiation levels onsite are generally 2-6 mrem/quarter higher than the levels oQsite. This may be attributable to natural variations in environmental radiation levels, earth moving activities onsite, the mass of concrete employed in the construction of the plants, or other undetermined influences. Fluctuations in natural background dose rates and in TLD readings tend to mask any small increments which may be due to plant operations. Thus, there was no identifiable increase in dose rate levels attributable to direct radiation from plant equipment and/or gaseous eflluents.

VIII.DOSE TO A MEMBER OF THE PUBLIC INSIDE THE SITE BOUNDARY Pursuant to ODCM section 7.7.5, a review w'as performed to determine the highest dose to a member of the public in the site boundary. This review assumed that TVA employees located outside of restricted areas were considered as members of the public. The dose to a member of the public consists of the sum of dose commitments from eQluent releases as well as any direct radiation dose.

The internal dose from eQluent releases consists of inhalation and ingestion doses. The inhalation dose commitment assumes that site occupancy factors are suQiciently low to compensate for the increase in the atmospheric dispersion above that for the site boundary. The ingestion dose commitments use the pathways and calculated values described previously for beef, milk, and garden vegetable ingestion as well as the dose commitments from liquid eQIuents.

The direct radiation dose was determined from area TLD results. It consisted of gamma dose, from the plume, ground contamination and from equipment sources (i.e., tanks, turbine shine, radioactive material storage areas, etc.). The highest direct radiation dose accounting for background and occupancy was 8.8 mrem during 1995.

The total annual dose is the sum of the direct radiation dose (8.8 mrem) and the eQluent dose commitment (6.0E%2 mrem) which is equal to 8.9 mrem. It can be concluded that the dose limit for a member of the public inside the site boundary as specified in 10 CFR 20.1301 was not exceeded.

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 IX. TOTAL DOSE To determine compliance with 40 CFR 190, annual total dose contributions to the maximum individual from BFN radioactive eQluents and all other nearby uranium fuel cycle sources are considered.

The annual dose to any organ other than thyroid for the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the critical organ dose (for any organ other than the thyroid) from airborne eQluents for each quarter from ground contamination, inhalation and ingestion, the total body dose from liquid eQluents for each quarter, the maximum organ dose (for any organ other than the thyroid) from liquid eQluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the REMP. Tlus dose is compared to the 40 CFR 190 limit for total body or any organ dose (other than thyroid) to determine compliance.

The annual thyroid dose to the maximum individual is conservatively estimated by summing the following doses: the total body air submersion dose for each quarter, the thyroid dose from airborne eQluents for each quarter, the total body dose from liquid eQluents for each quarter, the thyroid dose from liquid efiluents for each quarter, and any identifiable increase in direct radiation dose levels as measured by the REMP. This dose is compa'red to the 40 CFR 190 limit for thyroid dose to determine compliance.

Cumulative annual total doses are presented in Table 9.

El-7

0 Radiological Impact Assessment

.Brogans Ferry Nuclear Plant Santtary - December 1995 Table 1 Doses from Airborne Effiuents First Quarter Individual Doses Pathway Dose uarterl Limit Percent of Limit Location External Gamma Air 3.43E-06 mrad 5 mrad <1% S/6900 meters Beta Air 1.92E-06 mrad 10 mrad <1% S/6900 meters Submersion Total Bodv 1.67E-04 mrad 10 mrad <1% NNW/1676 meters Skin 1.96E-04 mrad 10 mrad <1% NNW/1676 meters Or an Doses Child/Bone 1.16E-03 mrem 7.5 mrem NNW/1676 meters Child/Thvroid 7.41EZ4 mrem 7.5 mrem 1% NNW/1676 meters Child/Total Bod 6.97EA4 mrem 7.5 mrem <1% NNW/1676 meters Po ulation Doses Total Body Dose L40E43 man-rem Maximum Organ Dose (organ) L72EA3 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mrem!yr for natural background).

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 2 Doses from Airborne Effluents Secoml Quarter Individual Doses Pathway Dose uarterl Limit Percent of Limit Location External Gamma Air 7.85E-07 mrad 5 mrad <1% N/6100 meters Beta Air 7.13E-07 mrad 10 mrad <1% N/6100 meters Submersion Total Bodv 1.12E-04 mrad 10 mrad <1% N/1981 meters Skin 1.31E44 mrad 10 mrad <1% N/1981 meters Or an Doses Child/Bone 1.42E-03 mrad 7.5 mrad N/1981 meters ChildfEhvroid 8.51E44 mrad 7.5 mrad N/1981 meters Cluldffotal Body 6.79E-04 mrad 7.5 mrad <1% N/1981 meters Po ulation Doses Total Body Dose 1.84E43 man-rem Maximum Organ Dose (organ) 2.13E43 man-rem (bone)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mremlyr for natural background).

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Radiological Impact Assessment Brogans Ferry Nuclear Plant January - December 1995 Table 3 Doses from Airborne Effiucnts Third Quarter Individual Doses Pathwav Dose uarterl Limit Percent of Limit Location External Gamma Air 7.51E-06 mrad 5 mrad <1% NNW/6000 meters Beta Air 3.46E-06mrad 10 mrad <1% NNW/6000 meters Submersion Total Bodv 3.79E-05m rad 10 mmd <1% NNW/1676 meters Skin 4.48E-05mrad 10 mrad <1% ~ NNW/1676 meters Or an Doses Child/Bone 6.62E-04 mrad 7.5 mrad <1% NNW/1676 meters Childffhvroid 8.77E44 mrad 7.5 mrad <1% NNW/1676 meters Child/Total Bodv 4.81E-04 mrad 7.5 mrad <1% NNW/1676 meters Po ulation Doses Total Body Dose 2.44E-03 man-rem Maximum Organ Dose (organ) 4.16E%3 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mrem/yr for natural background).

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Radiological Impact Assessment Browns Ferry Nuclear Plant Sanuary - December 1995 Table 4 Doses from Airborne Effiucnts Fourth Quarter Individual Doses Pathwav Dose uarterl Lmut Percent of Limit Location External Gamma Air 2.82E-05 mrad 5 mrad <1% NW/6600 meters Air 'eta 1.55E-05 mrad 10 mrad <1% NW/6600 meters Submersion Total Bodv 4.04E-04 mrad 10 mrad 1% NNW/1676 meters Skin 4.76E4 mrad 10 mrad <1% NNW/1676 meters Or an Doses Child/Liver 1.65E-03 mrad 7.5 mrad <1% NNW/1676 meters Child/Th oid 2.43E43 mrad 7.5 mrad <1% NNW/1676 meters Child/I'otal Bodv L28E%3 mrad 7.5 mrad <1% NNW/1676 meters Po ulation Doses Total Body Dose 3.20E43 man-rem Maximum Organ Dose (organ) 6.63E-03 man-rem (thyroid)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mremlyr for natural background).

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 5 Doses from Liquid Effiuents First Quarter Individual Doses mrcm Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Bod Fish In estion 3.8E-03 Recreation 7.6E44 Water In estion 2.2E-05 Total 4.6E-03 1.5 mrem <1%

Teen Liver Fish In estion 5.9E43 Recreation 7.6E44 Water In estion 2.9E-05 Total 6.7E-03 5 mrem <1%

Child Th old Fish In estion 3.7E46 Recreation 7.6E44 Water In estion 4.2E46 Total 7.7E-04 5 mrem Average Riverfiow past BFN (cubic feet per second): 72194 Total Body Dose 3. 1E42 man-rem Maximum Organ Dose (organ) 5.0E42 man-rem giver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem!year (based on 90 mremlyr for natural background).

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0 Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 6 Doses from Liquid Effluents Second Quarter Individual Doses mrem Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Bodv Fish In estion 2.2E%2 Recreation 4.2E43 Water In estion 1.3E44 Total 2.6E-02 1.5 mrem 1.8 %

Teen Liver Fish In estion 3.4E-02 Recreation 4.2EW3 Water In estion 1.6EA4 Total 3.8E-02 5 mrem Adult Thvrold Fish In estion 9.0EW5 Recreation 4.2E43 Water In estion 1.4E45 Total 4.3E-03 5 mrem (1%

Average Riverflow past BFN (cubic feet per second): 17405 Po ulation Doses Total Body Dose 2.7E41 man-rem Maximum Organ Dose (organ) 3.8E-01 man-rem giver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem!year (based on 90 mremlyrfor natural background).

El-13

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 7 Doses from Liquid Effluents Third Quarter Individual Doses mrem Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Bodv Fish In estion 1.6E42 Recreation 2.4E43 Water In estion 1.0E44 Total 1.9E-02 1.5ntrem 13%

Teen Liver Fish In estion 2.6E42 Recreation 2.4E43 Water In estion 1.4E-04 Total 2.9E-02 5 mrem Adult Th Old Fish In estion 1.3E-04 Recreation 2.4E43 Water In estion 2.6E-05 Total 2.6E43 5 mrem 1%

Average Riverflow past BFN (cubic feet per second): 31320 Po ulation Doses Total Body Dose 2.0E41 man-rem Maximum Organ Dose (organ) 2.9E41 man-rem giver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mremlyr for natural background).

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 8 Doses from Liquid Effiuents Fourth Quarter Individual Doses mrem Age Group Organ Dose Pathway Dose Quarterly Percent of Limit Limit Adult Total Bod Fish In estion 7.2E-03 Recreation 1.2E43 Water In estion 6.5E-05 Total 8.5E-03 1.5 mrem Adult Liver Fish In estion 1.1E42 Recreation 1.2E-03 Water In estion 6.0E-05 Total 1.2E-02 5 mrem <1%

Adult Th Old Fish In estion 6.6E45 Recreation 1.2E43 Water In estion 1.5E45 Total 1.3E-03 5 mrem <1%

Average Riverflow past BFN (cubic feet per second): 58367 Po ulation Doses Total Body Dose 6.8E42 man-rem Maximum Organ Dose (organ) 1.0E41 man-rem giver)

Population doses can be compared to the natural background dose for the entire 50-mile population of about 56,430 man-rem/year (based on 90 mrem/yr for natural background).

El-15

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 9 Total Dose from Fuel Cycle First Second Third Fourth Dose uarter uarter uarter uarter Total Body or any Organ exce t th oid Total bod air submersion 1.7E-04 1.1E44 3.8E45 4.0E-04 Critical or an dose air 1.2E43 1.4E43 6.6E44 1.7E43 Total bod dose i uid 4.6E43 2.6E-02 1.9E-02 8.5E-03 Maximumor andose i uid 6.7E43 3.8E-02 2.9E42 1.2E42 Direct Radiation Dose Total 1.3E-02 6.6E-02 4.9E42 2.3E-02 Cumulative Total Dose (Total body or any other organ) mrem 1.5E41 Annual Dose Limit(mrem) 2.50E+01 Percent of Limit 1%

Thvroid Dose mrem Total bod air submersion 1.7E44 1.1E44 3.8E45 4.0E44 Thvroid dose airborne 7.4E44 8.5E44 8.8E44 2.4E43 Totalbod dose(li uid 4.6E43 2.6E42 1.9E-02 8.5E43 Thyroid dose li uid 7.7E44 4.3E-03 2.6E43 1.3E43 Direct Radiation Dose Total 6.3E43 3.1E42 2.3E42 1.3E42 Cumulative Total Dose h roid mrem 7.3E42 Annual Dose Limit (mrem) 7.50E+01 Percent of Limit <1%

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Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 10 Joint Frequency Distribution in Percent for Ground Level Releases First Quarter El-17

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

BROWHS FERRY NUCLEAR PLANT JAN 1, 95 - MAR 31, 95 WZHD WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL 0.000 0.000 0.000 0.000 0.093 0.373 0.280 F 000 0.000 0.746 HHE 0.000 0.000 0.000 0.000 0.000 0.979 0.047 0.000 0.000 1.025 HE 0.000 0.000 0.000 0.000 0.000 0.233 0.047 0.000 0.000 0.280 EHE 0.000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.140 0.699 0.326 0.000 0.000 0.000 0.000 1.165 SSE 0.000 0.000 0.186 0.885 0.000 0.000 0.000 0.000 0.000 1.072 S 0.000 0.000 0.140 0.699 0.093 0.000 0.000 0.000 0.000 0.932 SSW 0.000 0.000 0.000 0.186 0.047 0.000 0.000 0.000 0.000 0.233 SW 0.000 0.000 0.000 i 0.047 0.047 0.000 0.000 0.000 0.000 0.093 WSW 0.000 0.000 0.047 0.000 0.140 0.140 0 000 0.000 0.000 0.326 W 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 WHW 0.000 0:000 0.000 0.093 0.000 0.233 0.140 0.000 0.000 0.466 NW 0.000 0.000 0.000 0.093 0.093 0.373 0.280 0.000 0.000 0.839 NHW 0.000 0.000 0.000 0.000 0.047 0.513 0.326 0.000 0.000 0.885 SUBTOTAL 0.000 0.000 0.513 2.749 0.885 2.936 1.118 0.000 0.000 8.201 TOTAL HOURS OF VALID STABZLZTY OBSERVATZOHS 2150 TOTAL HOURS OF STABILITY CLASS A 176 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 176 TOTAL HOURS OF VALID WIND DIRECTION-WIHD SPEED-STABILITY OBSERVATIOHS 2146 TOTAL HOURS CALM 0 ~ ~

METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIHD SPEED AHD DZRECTZOH MEASURED AT 10.42 METER LEVEI DATE PRZHTED: 26-APR-95 MEAH WIND SPEED ~ 7.79 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM .'UNROUNDED NUMBERS

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

BROWHS FERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND WIND SPEED{MPH)

DZRECTZOH CALM 0.6-1.4 3.5-3.4 3.5-5.4 5.5-7. ~ 7.5-12.4 12.5-18.4 18.5-24.4 34.5 TOTAL H 0. 000 0.000 0.000 0.047 0 093 0.186 0.280 0.000 0.000 0.606 HHE 0.000 0.000 0.000 0.000 0.000 0.047 0 '86 0.280 0.047 0.000 0.000 0.559 HE 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.093 EHE 0.000 0.000 F 000 0.093 0.000 0.000 0 F 000 0.000 0.000 0.093 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0 000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 0.000 0.000 0.186 0 '26 0.140 0.000 0.000 0.000 0.000 0.652 SSE 0.000 0.140 0.093 0.000 0.000 0.000 0.000 0.000 0.233 S 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.093 SSW 0.000 0.000 0.000 0.047 0.000 0.047 0.000 0.000 0.000 0.093 SW 0.000 0.000 0.000 0.047 0.000 0.000 0.000 F 000 0.000 0.047 WSW 0 000 0.000 0.000 0.093 0.140 0.093 0.000 0.000 0.000 0.326 W 0.000 F 000 0.047 0.047 0.047 0.093 0.000 0.000 0.000 0.233 WHW 0.000 0".000 0.000 0.000 0.047 0.326 0.140 0.047 0 000 0.559 HW 0.000 0.000 0.000 0.093 0.140 0.326 0.093 0.047 0.000 0 '99 HNW 0.000 0.000 0.000 0.000 0.140 0.140 0.093 0.000 0.000 0.373 SUBTOTAL 0.000 0.000 0 419 1.025 0.932 1.584 0.652 0.093 0.000 4.706 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2150 TOTAL HOURS OF STABZLZTY CLASS B 101 TOTAL HOURS OF VALID WZHD DZRECTIOH-WIHD SPEED-STABILITY CLASS B 101 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROLOQZCAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 10 '3 AHD 45 30 METERS WIND SPEED AHD DZRECTZOH MEASURED AT 10.42 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WZND SPEED ~ 8.03 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-19

0 JOINT PERCENTAOE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<35-1.5 C/100 M)

BROWHS FERRY HUCZEAR PLAHT JAH 1, 95 MAR 31 ~ 95 WIND WIND SPEED(MPH)

DIRECTION 5.6 1.4 1.5-3.4 3.5-5.4 5.5-3. ~ 7.5-12.4 12.5-18.4 18.5-24.4 >5524. 5 TOTAL H 0.000 0.000 0.000 0.000 0.140 0.047 0.093 0.000 0.000 0.280 HHE 0.000 0.000 0.000 0.233 0.140 0.186 0.047 0.000 0.000 0.606 HE 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.093 EHE 0.000 0 ~ 000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.093 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 0.047 0.047 0.000 0 ~ 000 0 ~ 000 0.000 0 ~ 093 SE 0.000 0.000 0.093 0.280 0.000 0.000 0.000 0.000 0.000 0.373 SSE 0.000 0.000 0.186 0.047 0.000 0.000 0.000 0.000 0.000 0.233 S o.aoo 0.000 0.047 0.140 0.000 0.000 0.000 0.000 0.000 0.186 SSW 0.000 0.000 0.093 0.000 0.047 0.000 0.000 0.000 0.000 0.140 SW 0.000 0.000 0.000 0 ~ 140 0.000 0.047 0.000 Q.aaa 0.000 0.186 WSW 0.000 0.000 0.000 0.047 0.047 0.140 0.000 0.000 0.000 0.233 W 0.000 0.000 0.000 0 ~ 000 0.093 0.093 0.000 0.000 0.000 0.186 WNW 0;000 0:000 0.000 0.000 0.000 0.233 0.140 0.000 0.000 0.373 HW 0.000 0.000 0.047 0.047 0.186 0.186 0.047 0.000 0.000 0.513 HNW 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.000 0.466 1.165 0 '792 0.979 0.326 0.000 0.000 3.728 TOTAL HOURS OF Vhl ID STABILITY OBSERVATZOHS 2150 TOTAL HOURS OF STABILITY CLASS C 81 TOTAl HOURS OF VALID WIND DIRECTION-WIHD SPEED-STABILITY CIASS C 80 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROLOOZCAL FACILITY'ROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BE'TWEEN 10 03 AHD 45 WZHD SPEED AND DZRECTZOH MEASURED AT 10 '2 '0 METER LEVEL METERS DATE PRINTED: 26-APR-95 MEAN WIND SPEED 55 6 ~ 90 NOTE TOTALS AHD SUBTOTALS ARE OBTAINED FROM .UNROUNDED NUMBERS E1-20

0 SOIHT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<~-0 5 C/100 M)

BROWHS FERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION 0.6-1 4 3.5-3.4 3.5-5. ~ 5.5-2. ~ 7.5-12.4 12.5-18.4 18.5-24.4 24. 5 TOTAL H 0.000 0.000 0.466 0.466 0 885 2.330 0.839 0.000 0.000 HHE 0.000 0.047 0.140 0.652

~

4.986 1.724 2.190 0.093 0.000 0.000 4.846 HE 0.000 0 '47 0.326 0.606 0.885 0.373 0.000 0.000 0.000 2.237 EHE 0.000 0 000 0.326 0.093 0.047 0.047 0.000 0.000 0.000 0.513 E 0.000 0.000 0.419 0.186 0.140 0.093 0.000 0.000 0.000 0.839 ESE 0.000 0.000 '0.326 0.233 0.233 0.000 0.000 0.000 0.000 0.792 SE 0.000 0.000 0.746 0.699 0.093 0 000 0.000 000 0.000 SSE 0.000 0.000 0.699 0.373 0.000 0 1.538 0.000 0.000 0 000 0.000 1.072 S 0.000 0.093 0.466 0.373 0.000 0.000 0.000 0.000 0.000 0.932 SSW 0.000 0.000 0.280 0.140 0.000 0 093 0.000 0.000 F 000 SW 0.000 0.000 '93 0.466 0.513 0 0.140 0.000 0.000 0.000 0.000 0.699 WSW 0.000 0.047 0 '66 0.280 0.093 0.466 0.093 0.000 0.000 1.445 W 0.000 0.000 0.000 0.000 0.233 0.093 0.746 0.233 0.419 0 '13 0.186 F 000 0.000 2.097 WHW 0.233 0.746 1.212 0.186 0.000 2.703 HW 0 F 000 0.047 0.093 0.186 0.186 1.445 1.072 0.326 0.000 3.355 HNW 0.000 0.000 0.326 0.652 0.979 1.491 0.652 0.047 0.000 4.147 SUBTOTAL 0.000 0.280 5.499 6.384 6.058 9 '86 4.147 0.559 0.000 32.712 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2150 TOTAL HOURS OF STABILITY CLASS D 704 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY CLASS D 702 TOTAI HOURS OF VALZD WIHD DIRECTION-WZHD SPEED-STABZLZTY OBSERVATIONS 2146 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEH 10.03 AHD 45 WZHD SPEED AHD DIRECTION MEASURED AT 10 F 42 METER LEVEI

'0 METERS DATE PRINTED: 26-APR-95 MEAN WIND SPEED ~ 7.52 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-21

X JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTIOH FOR STABILITY CLASS E (-0 ~ 5< DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT JAN 1 ~ 95 MAR 31 ~ 95 WZHD WIND SPEED(MPH)

DIRECTION CALM 5.6-1. ~ 1.5-3.4 3.5-5.4 5.5-7. ~ 7. 5-12 4 12 5-18. 4 18. 5-24. 4 14.5 TOTAL H . 0.000 0.000 0.699 0.792 0.513 0.839 0.047 0.000 0.000 0.000 0.140 0.606 2 889 HHE 0.652 0.280 0.419 0.047 0.000 0.000

~

2.144 HE 0.000 0.047 0.186 0.419 0.606 0.233 ENE 0.000 0.047 0.047 0.140 0 '40 0.000 0.000 0.000 0.000 0.000 0.000 1 '91 0.000 0.186 0.326 0.000 0.373 E 0.280 0.186 0.000 0.000 0.000 0.000 979 0 '86 0

ESE 0.000 0.047 1 351 1.398 0.000 0.000 0.000 0.000 SE 0.000 0.373 0.606 2.982 1 072 0.652 0.233 0.000 0.000 0.000 2.936 SSE 0.000 0.000 0.093 0.233 0.792 0 '52 0 233 0.186 0.000 0.000 0.000 1.957 S 0.513 0.513 0.326 0.093 0.000 0.000 0.000 1.678 SSW 0.000 0.000 0.233 0.093 0.047 0.093 0.000 0.000 0.000 0.466 SW 0.000 0.000 0.000 0.093 0.093 0.047 0 '93 0.047 0.000 0.000 0 F 000 0.280 WSW 0.652 0.186 0.186 0.093 0.000 0.000 0.000 1.212 W 0.000 0.047 0.140 0.280 0.280 0.233 0.000 0.000 0.000 0.000 0.047 0.093 0.233 0.979 WHW 0.140 0.326 0.000 0.000 0.000 0.839 HW 0.000 0.047 0.093 0.233 0.280 0.513 0.280 0.000 0.000 1.445 HHW 0.000 0.047 0.513 0.466 1.118 0.746 0.000 0.000 0.000 2.889 SUBTOTAL 0.000 1.445 6.943 7.456 5.266 4.054 0.373 0.000 0.000 25.536 TOTAL HOURS Ot VALID STABILITY OBSERVATIONS 2150 TOTAL HOURS Ot STABILITY CLASS E 549 TOTAL HOURS OF VALID WIND DZRECTZOH-WZHD SPEED-STABILITY CLASS E 548 TOTAL HOURS OF VALID WIND DIRECTION-WIHD SPEED-STABZI ZTY OBSERVATZOHS 2146 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND SPEED AND DIRECTIOH MEASURED AT 10.42 METER LEVEL DATE PRINTED: 26-APR-95 MEAH WIND SPEED ~ 5.03 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-22

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DZRECTIOH FOR STABZLZTY CLASS F l 1 5< DELTA T<~ 4.0 C/100 M)

~

BROWHS FERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.2 5.5-7.\ 7.5-12 ' 12.5-18.4 18.5-24.4 24.5 TOTAL N 0.010 0.140 0.373 0.606 0 000 0.093 0.000 0.000 0.000 1.222 HHE 0.009 0.093 0.373 0.466 0.186 0.047 F 000 0.000 0.000 1.174 HE 0.005 0.000 0.233 0.093 0.047 0.000 0.000 0.000 0.000 0.377 EHE 0.011 0.000 0;559 0.093 0.093 0.000 0.000 0.000 0.000 0.756 E 0.015 0.093 0.652 0.280 0.000 0.000 0.000 0.000 0.000 1.040 ESE 0.020 0.047 0.979 0.233 0.047 0.000 0.000 0.000 0.000 1.325 SE 0.035 0 '40 1.678 0.466 0.326 0.140 0.000 0.000 0.000 2.785 SSE 0.042 0.186 1 957 0.885 0.280 0 ~ 140 0.000 0.000 0.000 3.490 S 0.015 0.186 0.559 0.466 0.513 0.186 0.000 0.000 0.000 1.925 SSW 0.002 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.142 SW 0 '07 0.140 0.233 0.000 0.000 0+000 0.000 0.000 0 F 000 0.380 WSW 0.001 0.000 0.047 0.093 0.000 0.000 0.000 0.000 0.000 0 '41 W 0.000 0 F 000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 WHW 0.001 0 '47 0 000 0.000 0.093 0.000 0.000 0.000 0.000 0.141 HW 0.003 0.093 0.047 0.000 0.047 0.000 0.000 0.000 0.000 0.189 HHW 0.012 0.093 0.513 0.233 0.233 0.047 0.000 0.000 F 000 1.130 SUBTOTAI 0.186 1.258 8.295 4.007 1.864 0.652 0.000 0 000 0.000 16.263 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2150 TOTAL HOURS OF STABILITY CLASS F 349 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY CLASS F 349 TOTAI5 HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATZONS 2146 TOTAL HOURS CALM METEOROLOGICAL FACILITY: BROWHS FERRY HUCLEAR PLANT STABILZTY BASED ON DELTA-T BETWEEN 10 03 AHD 45 30 METERS WIHD SPEED AHD DIRECTZOH MEASURED AT 10 ~ 42 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WIND SPEED ~ 3 '6 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-23

JOINT PERCENTAGE FREQUENCIES Ot WIND SPEED BY WIND DZRECTZOH tOR STABILITY CLASS G (DELTA T > 4 0 C/100 M)

BROWNS PERRY NUCLEAR PLANT JAH 1 ~ 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3 ' 3.5-5 ' 5.5-7.4 7.5-12.4 12.5-18 4 18 '-24.4 24.5 TOTAL H 0.008 0.047 0.326 0.140 0.000 0.000 0 F 000 0.000 0.000 0.521 HHE 0.010 0.093 0.373 0.186 0.140 0.000 0.000 0.000 0.000 0.803 HE 0.002 0.000 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.142 EHE 0.001 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.048 E 0.002 0.000 0.093 0.000 0 000 0.000 0.000 0.000 0.000 0.095 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.009 0.186 0.233 0.000 0.047 0.000 0.000 0.000 0.000 0.475 SSE 0.070 0.019 0.652 0.140 2.470 0.699

l. 212 0.373 0.047 0.093 0.000 0.000 0.000 0.000 0.000 4.450 S 0 F 000 0 000 0 000 1.324 SSW 0 000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.002 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.095 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.003 0.047 0.093 0.000 0.000 0.000 0.000 0.000 0 F 000 . 0.143 WNW 0.003 0".000 0.140 0.000 0.000 0.000 0.000 0.000 0.000 0.143 HW 0.005 0.093 0.140 0 '93 0.000 0.000 0.000 0.000 0.000 0.331 HHW 0.004 0.000 0.186 0.093 0.000 0 F 000 0.000 0.000 0.000 0.284 SUBTOTAL 0-140 1.305 4.939 2.144 0.326 0.000 0 F 000 0.000 0.000 8.854 TOTAI HOURS OP VALID STABILITY OBSERVATIOHS 2150 TOTAL HOURS Ot STABILITY CLASS G 190 TOTAL HOURS OF VALID WZHD DZRECTIOH-WIND SPEED-STABILITY CLASS G 190 TOTAL HOURS OF VALID WZHD DZRECTIOH-WZND SPEED-STABILITY OBSERVATZONS 2146 TOTAL HOURS CALM 3 METEOROLOGICAL PACZLITY: BROWHS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AHD DZRECTZOH MEASURED AT 10 42 METER LEVEL DATE PRINTED: 26-APR-95 MEAN WIND SPEED ~ 2 70 NOTE'OTALS AHD SUBTOTALS ARE OBTAINED PROM .'UNROUNDED HUMBERS El-24

Radiological Impact Assessment Brogans Ferry Nuclear Plant January - December 1995 Table ll Joint Frequency Distribution in Percent for Ground Level Releases Second Quarter E1-25

JOZHT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABZLITY CLASS A {DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1 ~ 95 JUH 30e 95 WIND WZHD SPEEDtMPH)

DIRECTION CALM 0.6-1.4 1.5-3 ' 3.5-5.4 5.5-7.4 7 5-12 ' 12 5-18 4 18 '-24 4 >m24.5 TOTAL H 0.000 0.000 0.000 0.000 0.280 1.027 0.047 0.000 0.000 1.354 HNE 0.000 0.000 0.000 0.140 0.093 0 ~ 187 0.000 0.000 0.000 0.420 HE 0.000 0.000 0.000 0.000 0.047 0.140 0.000 o.aaa 0.000 0. 18'7 EHE 0.000 0.000 0.000 0.000 0.047 0.093 0.000 0.000 0.000 0.140 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 0.373 0.000 0.000 o.ooa 0.000 0.000 0.373 SE 0.000 0.000 0.747 1.120 0.000 0 ~ 000 0.000 0.000 0.000 1.867 SSE 0.000 0.000 1.494 0.654 0.047 0.000 0.000 0.000 0.000 2.194 S 0.000 0.000 1.401 1.307 0.093 0.000 o.oao 0.000 0.000 2.801 SSW 0.000 0.000 0.700 1.027 0.233 0.047 0.000 0.000 0.000 2.007 SW 0.000 0.000 0.233 0.420 0 093 0.000 0.000 0.000 0.000 0.747 WSW 0.000 0.000 0.047 0.560 0.373 0.047 a.ooo 0.000 0.000 1.027 W 0.000 0.000 0.000 0.093 0.233 0.047 0.000 0.000 0.000 0.373 WNW 0.000 0*000 0.000 0.187 0 ~ 187 0.187 0.000 0.000 0.000 0.560 HW 0.000 0.000 0.000 0.047 0 373 1.074 0.000 0.000 0.000 1.494 HHW 0.000 0.000 0.000 0.047 0.047 0.560 0.140 0.000 0.000 0.794 SUBTOTAL 0.000 0.000 4.622 5.976 2 ~ 148 3.408 0.187 0.000 0.000 16.340 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABZLITY CLASS A 360 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS A 350 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLITY: BROWNE FERRY NUCLEAR PLANT STABZLITY BASED OH DELTA-, T BETWEEH 10 '3 AHD 45.30 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED ~ 5.31 HOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUHDED NUMBERS El-26

(~

JOINT PERCEHTAQE FREQUENCIES OF WZHD SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1. 9 < DELTA T<~-I ~ 7 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WZHD WIND SPEED(MPN)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.047 0.000 0.280 0.140 0.000 0.000 0.000 0.467 HHE 0.000 0.000 0.000 0.140 0.047 F 000 0.000 0.000 0.000 0.187 HE 0.000 0.000 0.047 0.093 0.140 0.093 0.000 0.000 0.000 0.373 EHE 0.000 0.000 0.047 0.047 0.093 0.093 0.000 0.000 0.000 0.280 E 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 ESE 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.000 0.000 0.187 SE 0.000 0.000 0.000 0.093 0.000 0.000 0.000 0.000 0.000 0.093 SSE 0.000 0.000 0.514 0.093 0.000 0.000 0.000 0.000 0.000 0.607 S 0.000 0.000 0.420 0.187 0.140 0.000 0.000 0.000 0.000 0.747 SSW 0.000 0.000 0.327 0.233 0.187 0.000 0.000 0.000 0.000 0.747 SW 0.000 0.000 0.047 0.373 0.047 0.000 0.000 0.000 0.000 0.467 WSW 0.000 0.000 0.000 0.280 0.093 0.000 0.000 0.000 0.000 0.373 W 0.000 0.000 0.140 0.327 0.280 0.000 0.000 0.000 0.000 0.747 WNW 0.000 0.000 0.047 0.187 0.467 0.140 0.000 0.000 0.000 0.840 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.093 0.000 0.047 0.233 0.420 0 '47 0.000 0.000 0.607 HNW 0.187 0.047 0.000 0.000 0.467 SUBTOTAL 0.000 0.000 1.727 2.288 2.054 1.074 0.093 0.000 0.000 7.236 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS B 156 TOTAL HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABILITY CLASS B 155 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTION MEASURED AT 10 '2 METER LEVEL DATE PRZNTED: 24-JUL-95 MEAN WIND SPEED ~ 5 F 28 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM IJNROUNDED NUMBERS El-27

0 JOINT PERCENTAGE FREQUENCIES

<e OF WIND SPEED BY 'WIND DZRECTIOH FOR STABILITY CLASS C (-1.7< DELTA T<I-1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTIOH CALM 5. 6-1. 4 1.5-3.4 3.5-5. ~ 5 '-7.4 7 5 12.4 12.5-18.4 18.5<<24.4 34.5 TOTAL H 0.000 0.000 0.000 0.140 0.233 0.047 0 000 0.000 0.000 0 ~ 420 HNE 0 ~ 000 0.000 0.047 0.280 0.047 0.093 0.000 0.000 0.000 0.467 HE 0.000 0.000 0.000 0.047 0.140 0.000 0.000 0.000 0.000 0.187 EHE 0.000 0.000 0.093 0.093 0.093 0.000 0.000 0.000 0.000 0.280 E 0.000 0.000 0.000 0.047 0.000 0 ~ 000 0.000 0.000 0.000 0.047 ESE a.ooo 0.000 -0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SE 04000 0.000 0.327 0.000 0.000 0.000 0.000 0.000 0.000 0.327 SSE 0.000 0.000 0.373 0.047 0.000 0.000 0.000 0.000 0.000 0.420 S 0.000 0.000 0.420 0.093 0.047 0.000 0.000 0.000 0.000 0.560 SSW 0.000 0.000 0.233 0.140 a.a93 0 ~ 047 0 F 000 0.000 0.000 0.514 SW 0.000 0.000 0.420 0.093 0.000 0.000 0.000 0.000 0.000 0.514 WSW 0.000 0.000 0.093 0.187 0.140 o.aaa 0.000 0.000 0.000 0.420 W 0.000 0.000 0.047 0.140 0.187 0.000 0.000 0.000 0.000 0.373 WNW 0.000 0.000 0.000 0.093 0.233 0.140 a.ooo a.ooo 0.000 0.467 HW 0.000 0.000 0.000 0.187 0.140 0.233 0.000 0.000 0.000 0.560 HHW 0.000 0.000 0.093 0.047 0.140 0.280 0.000 a.oao 0.000 0.56a SUBTOTAL 0.000 0.000 2.194 1.634 1.494 0.840 0 ~ 000 0.000 o.aoo 6.162 TOTAL HOURS OF VAI ZD STABZLZTY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS C 132 TOTAL HOURS OF VALID WIHD DZRECTZOH-WIND SPEED-STABILITY CLASS C 132 TOTAL HOURS OF VALID WIND DIRECTION-WIHD SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGICAL FACZI ZTY: BROWHS FERR'Y NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND SPEED AND DZRECTIOH MEASURED AT 10 ~ 42 METER LEVEL DATE PRZHTED: 24-JUL-95 MEAN WZHD SPEED ~ 4.97 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-28

'0 0

JOINT PERCENTAGE FREQUENCIES OF WZHD SPEED BY WIND DIRECTION FOR STABILITY CLASS D {-1.5< DELTA T<55-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1 ' 1.5-3.4 5.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 7 24.5 TOTAL H 0.000 0.000 0 '73 0.420 0.373 0.327 0.047 0.000 0.000 1.541 HNE 0.000 0.000 0.280 0.373 0.280 0.047 0.000 0.000 0.000 0.980 HE 0.000 0.000 0.187 0.420 0.140 0.233 0.000 0.000 0.000 0.980 EHE 0.000 0.000 0.187 0.420 0.000 0.000 0.000 0.000 0.000 0.607 E 0.000 0.000 0.000 0.000 0.373 0.514 0 '47 0.093 0.000 0.000 0.000 1.027 ESE 0.467 0 280 0.047 0.047 0.000 0.000 0.000 0.840 SE 0.000 0.047 0.840 0.187 0.187 0.047 F 000 0.000 0.000 1.307 SSE 0.000 0.047 1 '54 0.280 0.000 0.000 0.000 0.000 0.000 1.681 S 0.000 0.000 1.727 1.214 0.420 0.093 F 000 0.000 0.000 3.455 SSW 0.000 0.093 1.541 1.307 0.794 0.140 0.000 0.000 0.000 3.875 SW 0.000 0.000 0.467 0.233 0.047 0.000 0.000 0.000 0.000 0.747 WSW 0.000 0.000 0.000 0.000 0.747 0.654 0.794 0 '40 0.280 0.000 0.000 0.000 1.961 W 0.980 0.373 0.467 0.093 0.000 0.000 2.568 WNW 0.000 0.000 -0.047 0.093 0.327 0.420 0.140 0.047 0.000 1.074 HW 0.000 0.000 0.047 0.233 0.420 0.514 0.233 0.093 0.000 1.541 HHW 0.000 0.000 0.140 0.327 0.607 0.607 0.373 0.000 0.000 2.054 SUBTOTAL 0.000 0.187 9.430 8.077 4.202 3.315 0.887 0.140 0.000 26.237 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS D 565 TOTAI HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY CLASS D 562 TOTAL HOURS OF VALID WIND DIRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 METEOROLOGZCAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND SPEED AHD DZRECTIOH MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JUL-95 MEAH WIND SPEED ~ 5.03 HOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-29

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E t-0.5< DELTA T<55 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 95 JUN 30, 95 WIHD WIHD SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4 3.5-5.4 5.5-3.4 7.5-12 ' 12.5-18.4 18.5-24.4 34.5 TOTAL H 0.000 0.000 0.560 0.607 0.093 0.000 0.000 0.000 0.000 1.261 HNE 0.000 0.233 0.327 0.467 0.280 0.327 0.000 0.000 0.000 1.634 HE 0.000 0.000 0.420 0.373 0.373 0.093 0.000 0.000 0.000 1.261 ENE 0.000 0.093 0.420 0.327 0.000 0.093 0.000 0.000 0.000 0.934 E 0.000 0.093 .0.934 0.233 0.047 0.000 0.000 0.000 0.000 1.307 ESE 0.000 0.327 1.307 0.327 0.093 0.047 0.000 0.000 0.000 2.101 SE 0.000 0.140 0.794 0.373 0.047 0.000 0.000 0.000 0.000 1.354 SSE 0.000 0.373 1.541 0.420 0.000 0.000 0.000 0.000 0.000 2.334 S 0.000 0.373 1.961 1.354 0.093 0.000 0.000 0.000 0.000 3.782 SSW 0.000 0.140 1.027 0.420 0.233 0.093 0.000 0.000 0.000 1.914 SW 0.000 0.140 0.420 0.047 0.093 0.000 0.000 0.000 0.000 0.700 WSW 0:000 0.093 0.607 0 '33 0.187 F 000 0.000 0.000 0.000 1.120 W 0.000 0.047 0.467 0.280 0 F 000 0.047 0.000 0.000 0.000 0.840 WNW 0.000 0.187 0.093 0.047 0.093 0.000 0.000 0.000 0.000 0.420 HW 0.000 0.187 0.233 0.140 0.000 0.047 0.000 0.000 0.000 0.607 HHW 0.000 0.093 0.887 0.654 0.140 0.187 0.047 0.000 0.000 2.007 SUBTOTAL 0.000 2.521 11.998 6.303 1.774 0.934 0.047 0.000 0.000 23.576 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS E 507 TOTAL HOURS OF VALID WZHD DZRECTIOH-WIND SPEED-STABILITY CLASS E 505 TOTAL HOURS OF VALID WIHD DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 0 ~ ~

METEOROLOGICAL FACZIZTY: BROWHS FERRY HUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEH 10 03 AHD 45.30 METERS WIHD SPEED AND DIRECTZOH MEASURED AT 10 42 METER LEVEL DATE PRINTED: 24-JUL-95 MEAH WIND SPEED I 3.38 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-30

0'OIHT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTIOH FOR STABILITY CLASS F { 1. 5< DELTA T<~ 4. 0 C/100 M)

BROWHS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5 5-'7.4 7.5-12.4 12.5-18.4 18 '-24.4 25.5 TOTAL N 0.018 0.373 0.887 0.607 0.000 0.000 0.000 0.000 a.ooo 1.885 NNE 0.016 0.280 0.840 0.467 0.093 0.000 0.000 0.000 0.000 1.697 HE 0.013 0.420 0.514 0.327 0 ~ 047 0.047 0.000 0.000 0.000 1.367 EHE 0.015 0.187 0.887 0.327 0.093 0.047 0.000 0.000 0.000 1.556 E 0.013 0.233 0.654 0.560 0.000 0.000 0.000 0.000 0.000 1.460 ESE 0. 011 0 '80 "0. 514 0.000 0.000 0.000 0.000 0.000 a.ooo 0.805 SE 0.009 0.187 0.467 0.047 0.000 0.000 0.000 0.000 0.000 0.710 SSE 0.015 0.233 0.794 a.a93 0.000 0.000 0.000 0.000 0.000 1.135 S 0.009 0.187 0.420 0.280 0.000 0.000 0.000 0.000 0.000 0 ~ 896 SSW 0.003 0.047 0.187 0.000 0.000 0.000 0.000 0.000 0.000 0.237 SW 0.003 0.093 0.140 0.047 0.000 0.000 0.000 0.000 Q.QQQ 0.283 WSW 0.001 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.095 W 0.001 0.047 '0. 000 Q.QQQ a.aoo 0.000 0.000 0.000 0.000 0.047 WNW 0 ~ 001 0.000 0.047 0.000 0.000 0.047 0.000 0.000 0.000 0.094 HW 0.002 0.093 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.142 NHW 0.009 0.187 0.467 0.280 0.093 0.000 0.000 0.000 0.000 1.036 SUBTOTAL 0.140 2.894 6.909 3.035 0.327 0.140 0.000 0.000 0.000 13.445 TOTAL HOURS OF VAIZD STABILZTY OBSERVATZOHS 2159 TOTAL HOURS OF STABILITY CLASS F 289 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY CLASS F 288 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY OBSERVATZOHS 2142 TOTAI HOURS CALM 3 METEOROLOGZCAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24 JUL-95 MEAN WIND SPEED a 2.60 HOTE: TOTALS AND SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-31

4) JOINT PERCENTAGE FREQUENCIES og>>

OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G {DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 95 - JUH 30, 95 WIND WZHD SPEED(MPN)

DZRECTIOH CALM 0.6-1.4 1.5-3 ' 5.5-5.4 5.5-7.4 7.5>>12 ' 12 '-18 ' 18.5-24.4 >5524. 5 TOTAL H 0.013 0.467 1.261 0.233 0.000 0 ~ 000 0.000 0.000 0.000 1.974 HNE 0.009 0.140 1.074 0.420 0.000 0.000 0.000 0.000 0.000 1.643 HE 0.004 0.093 0.373 0.047 0.000 0 ~ 000 0.000 o.aaa 0.000 0. 517 EHE 0.005 0.140 0.467 0.093 0.000 0.000 0.000 0.000 0.000 0.705 E 0.002 0.047 0.233 0.140 0.000 0.000 0 000 0.000 0.000 0.422 ESE 0.001 0.047 -0.093 0.000 0.000 a.aao a.ooa 0.000 0.000 0 ~ 141 SE 0.000 0.047 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.047 SSE 0.004 0.280 0.233 0.000 0.000 0.000 0.000 0.000 0.000 0.518 S 0.003 0 ~ 187 0.140 0.000 0 000 0.000 a.oaa 0.000 0.000 0.329 SSW 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 SW 0 ~ 000 0.000 0.000 0.000 0 000 0 000 0.000 0.000 0.000 0.000 WSW 0.000 0.047 0.000 0.000 a.oaa 0.000 0.000 0.000 0.000 0.047 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.047 HW 0.000 0.000 0.000 0.000 a.ooo 0.000 0.000 0.000 0.000 0.000 NNW 0.004 0.047 0.467 0.047 0.000 0.000 0.000 0.000 0.000 0.564 SUBTOTAL 0.047 1.634 4.342 0.98a o.aoa o.aoo 0.000 0.000 0.000 7.003 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS G 150 TOTAl HOURS OF VALID WIND DZRECTZON-WIND SPEED-STABZLITY CLASS G 150 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2142 TOTAL HOURS CALM 1 METEOROLOGICAL FACZLZTY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 03'HD 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED 55 2. 29 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-32

4' Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 12 Joint Frequency Distribution in Percent for Ground Level Releases Third Quarter El-33

JOINT PERCEHTAQE FREQUENCIES OF W1ND SPEED BY WIND DIRECTION FOR STABILITY CLASS A {DELTA T<~-1.9 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1, 95 SEP 30, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7 ' 7.5-12.4 12.5-18.4 18.5-24.4 >%24.5 TOTAL H 0.000 0.000 0.000 0.229 0.321 0.872 0.046 0.000 0.000 1. 469 HHE 0.000 0.000 0.000 0.046 0.367 0.872 0.046 0.000 0.000 1.331 HE 0 F 000 0.000 0.000 0.000 0.092 0.551 0.000 0.000 0.000 0.642 EHE 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.092 ESE 0.000 0.000 0.000 0.505 0.505 0.092 0.000 0 F 000 0.000 1.101 SE 0.000 0.000 0.688 2.203 0.092 0.000 0.. 000 0.000 0.000 2.983 SSE 0.000 0.000 1.239 1.469 0.000 0.000 0.000 0.000 0.000 2.708 S 0.000 0.000 0.642 0.872 0.000 0.000 0.000 0.000 0.000 1.514 SSW 0.000 0.000 0.229 0.275 0.000 0.000 0.000 0.000 0.000 0.505 SW 0.000 0.000 0.046 0 '67 0.000 0.000 0.000 0.000 0.000 0. 413 WSW 0.000 0.000 0.046 0.275 0.000 0.000 0.000 0.000 0.000 0.321 W 0.000 0.000 0.000 0 '84 0.367 0.000 0.000 0.000 0.000 0.551 WHW 0.000 0.000 0.000 0.229 0.367 0.321 0.000 0.000 0.000 0.918 HW 0.000 0.000 0.000 0.092 0.505 0 '18 0.046 0.000 0.000 1.560 HHW 0.000 0.000 0 000 0.046 0.092 0 '13 0.000 0.000 0.000 0.551 SUBTOTAL 0.000 0.000 2.891 6.792 2.891 4 '39 0.138 0.000 F 000 16.751 TOTAL HOURS Ot VALID STABILITY OBSERVATZOHS 2205 TOTAL HOURS Ot STABILITY CLASS h 372 TOTAL HOURS Ot VALID WZHD DIRECTION-WIND SPEED-STABILITY CLASS A 365 TOTAL HOURS Ot VALID WIND DZRECTZOH-WZHD SPEED-STABILITY OBSERVATZOHS 2179 TOTAL HOURS CALM 0 ' ~ ~

METEOROLOQZCAL FACILITY: BROWHS tERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WZHD SPEED AND DIRECTION MEASURED AT 10 42 METER LEVEL DATE PRINTED: 27-OCT-95 MEAH WIND SPEED m 5 80 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM,UNROUNDED NUMBERS El-34

JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WZHD DIRECTION FOR STABILITY CLASS B (-1 9< DELTA T<~-1.7 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1, 95 SEP 30, 95 WIND WIHD SPEED(MPH l DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12 '-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.367 0.413 0.138 0.000 0.000 0.000 0.918 HHE 0.000 0.000 0.000 0.275 0.092 0.229 0.000 0.000 0.000 0. 597 HE 0.000 0.000 0.000 0.000 0.184 0.092 F 000 F 000 F 000 0.275 EHE 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 ESE 0.000 F 000 F 000 0.138 0.000 0.138 0.000 0.000 0.000 0.275 SE 0.000 0.000 0.229 0.138 0.046 0.000 0.000 0.000 0.000 0.413 SSE 0.000 0.000 0.413 0.138 0.000 0.000 0.000 0.000 0.000 0.551 S 0.000 0.000 0.413 0.000 0.000 0.000 0.000 0.000 F 000 0.413 SSW 0.000 0.000 0.046 0.321 0.000 0.000 0.000 0.000 0.000 0.367 SW 0.000 0.000 0.138 0.046 0.000 0.000 0.000 0.000 0.000 0.184 WSW 0.000 F 000 0.046 0.184 0.000 0.000 0.000 0.000 0.000 0.229 W 0.000 0.000 F 000 0.367 0.459 0.046 0.000 F 000 0.000 0.872 WHW 0.000 0.000 0.046 0.092 0.229 0.092 0.000 0.000 0.000 0.459 HW 0.000 0.000 0.000 0.275 0.826 0.275 0.000 0.000 0.000 1.377 HHW 0.000 0.000 0.000 0.000 0.184 0.000 0.000 0.000 0.000 0.184 SUBTOTAL 0.000 F 000 1.331 2.386 2.524 1.010 0.000 0.000 0.000 7.251 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2205 TOTAL HOURS OF STABZLZTY CLASS B 159 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABILITY CLASS B 158 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY OBSERVATZOHS 2179 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 10 '2 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WZHD SPEED ~ 5 '6 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM .UNROUNDED NUMBERS E1-35

'e I

JOINT PERCEHTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-I ~ 7< DELTA T<~-1.5 C/100 M)

BROWHS FERRY HUCIEAR PLAHT JUL 1 ~ 95 SEP 30, 95 WIND WIND SPEED(MPH)

DIRECTION 0. 6-1. 4 1.5-3. ~ 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAl H 0.000 0.000 0.046 0.275 0.229 0.321 0.000 0.000 0.000 0. 872 HHE 0.000 0.000 0.046 0.367 0.229 0.184 0.000 0.000 0.000 0.826 HE 0.000 0.000 0.046 0.138 '0.046 0.046 0.000 0.000 0.000 0.275 EHE 0 000 0.000 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.092 E 0.000 0.000 .0.092 0.046 0.138 0.000 0.000 0.000 0.000 0.275 ESE 0.000 0.000 0.046 0.092 0.092 0.092 0.000 0.000 F 000 0.321 SE 0.000 0.000 0.367 0.000 0.000 0.000 0.000 0.000 0.000 0.367 SSE 0.000 0.000 0.321 0.092 0.000 0.000 0.000 0.000 0.000 0.413 S 0.000 0.000 0.275 0 '46 0.000 0.000 0.000 0.000 0.000 0.321 SSW 0.000 0.000 0.138 0.092 0.000 0.000 0.000 0. 000. 0.000 0.229 SW 0.000 0.000 0.184 0.092 0.000 0.000 F 000 0.000 0.000 0.275 WSW 0.000 0.000 0.046 0.046 0.092 0.000 0.000 0.000 0.000 0.184 W 0.000 0.000 0.000 0.367 0.275 0.046 0.000 0.000 0.000 0.688 WNW 0.000 0.000 0.000 0.184 0 '38 0.092 0.046 0.000 0.000 0.459 HW 0.000 0.000 0.000 0.229 0.138 0.275 0.000 0.000 0.000 0.642 HHW 0.000 0.000 0.046 0.184 0 '92 0.046 0.000 0.000 0.000 0.367 SUBTOTAL 0.000 0.000 1.652 2.341 1.469 1.101 0.046 0.000 0.000 6.609 TOTAL HOURS OF VALZD STABZLZTY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS C 145 TOTAL HOURS OF VALID WIHD DIRECTION-WZHD SPEED-STABILITY CLASS C 144 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATZOHS 2179 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY BROWHS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 10.42 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WZHD SPEED ~ 5.27 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM. UNROUNDED NUMBERS El-36

JOIHT PERCENTAGE FREQUENCIES IHD SPEED BY WIND DZRECTZOH FOR STABILITY CLASS D {-1.5< DELTA TC~-0.5 C/100 M)

BROWHS FERRY HUCIEAR PLANT JUL 1, 95 SEP 30 '5 WIHD WIND SPEED t MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5 ' 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL H 0.000 0 F 000 0.459 1 '93 0.551 0 F 505 0.046 0.000 0.000 2.754 HHE 0.000 0.046 0 ~ 321 0.505 0.367 0.229 0.000 0.000 0.000 1.469 HE 0.000 0.000 0.138 0.459 0.092 0.046 0.000 0.000 0.000 0.734 EHE 0.000 0 F 000 0.321 0.597 0.505 0.000 0.000 0.000 0.000 1.423 E 0.000 0.046 0.505 0.597 0.229 0.229 0.000'.000 0.000 0.000 1.606 ESE 0.000 0.000 0.459 0.551 0.413 0.367 0.000 0.000 1.790 SE 0.000 0.046 0.872 0.734 0.413 0 F 000 0.000 0.000 0.000 2.065 SSE 0.000 0.000 0.688 0.597 0.000 0.000 0.000 0.000 0.000 1.285 S 0.000 0.046 1.147 0.597 0.275 0.000 0.000 0.000 0.000 2.065 SSW 0.000 0.092 1 '01 0.551 0.138 0.000 0.000 0.000 0.000 1.882 SW 0.000 0.000 0 ~ 321 0.275 0.000 0 F 000 0.000 0.000 0.000 0.597 WSW 0.000 0.000 0.918 0.597 0.229 o.aoo 0.000 0.000 0.000 1.744 W 0.000 0.000 0.367 1.423 0.367 0.092 0.000 0.000 0.000 2.249 WNW 0.000 0.000 0.092 0.780 0.229 0.229 0.000 0.000 0.000 1.331 HW 0.000 0.000 0.138 0 '51 0.367 0.046 0.000 0.000 0.000 1.101 HNW 0.000 0.000 0.367 1.101 0.321 0.275 0.046 0.000 0.000 2.111 SUBTOTAL 0.000 0.275 8.215 11.106 4 '97 2.019 0.092 0.000 0.000 26.205 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS D 575 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY CLASS D 571 TOTAL HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABILITY OBSERVATIOHS 2179 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY BROWHS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEH 10 '3 AHD 45.30 METERS WIND SPEED AHD DZRECTZON MEASURED AT 10.42 METER LEVEL DATE PRINTED: 27-OCT-95 MEAH WIND SPEED m 4.54 HOTEt TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-37

JOINT PERCENTAGE FREQUENCIES D SPEED BY WIND DZRECTION FOR STABILITY CLASS E (-0 '< DELTA T<~ 1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1, 95 - SEP 30, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 0.138 1.377 0.964 0.459 0.000 0.000 F 000 F 000 2 '37 HHE 0.000 0.092 0.826 1.101 0.138 0.092 0.000 0.000 0.000 2.249 HE 0.000 0.184 0.642 0.505 0.229 0.138 0.000 0.000 0.000 1.698 EHE 0.000 0.184 0.964 0.734 0.046 0.000 0.000 0.000 0.000 1.927 E 0.000 0.505 1 423 1.147 0.367 0.046 0. 0.000 F 000 3.488 ESE 0.000 0.092 1.056 0.872 0.413 0.046 000'.000 0 F 000 0.000 2.478 SE 0.000 0.138 0.597 0.367 0.046 0.000 0.000 0.000 0.000 1.147 SSE 0.000 0.184 0.229 0.459 0.000 0 F 000 0.000 0.000 0.000 0.872 S 0.000 0.000 0.275 0.184 0.000 0.000 0 F 000 0.000 0.000 0.459 SSW 0.000 0.046 0.184 0.000 F 000 0.000 F 000 0.000 0.000 0.229 SW 0.000 0.046 0.092 0.000 0.046 0.000 0.000 F 000 0.000 0.184 WSW 0.000 0.046 0.184 0.092 0.000 0.000 0 000 0.000 0.000 0.321 W 0.000 0 '46 0.046 0.321 0 '46 0.000 F

0.000 0.000 0.000 0.459 WNW 0.000 0.000 0.092 0.184 0.000 0.000 0.000 0.000 0.000 0.275 HW 0.000 0.184 0.413 0.138 0.046 0.092 0.046 0.000 0.000 0.918 HHW 0.000 0.092 0.964 1.056 0.275 0.000 0.000 0.000 0.000 2 '86 SUBTOTAL 0.000 1.973 9.362 8.123 2.111 0.413 0.046 0.000 0.000 22.028 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2205 TOTAL HOURS OF STABZLZTY CLASS E 488 TOTAL HOURS OF VALID WZHD DIRECTION-WZHD SPEED-STABILITY CLASS E 480 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY OBSERVATIOHS 2179 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND SPEED AHD DZRECTZOH MEASURED AT 10 '2 METER LEVEL DATE PRZHTED: 27-OCT-95 MEAH WIND SPEED ~ 3 53 NOTES TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-38

JOINT PERCEHTAQE ( fHD SPEED BY WIND DIRECTIOH FOR STABILITY CLASS F ( 1 5< DELTA T<a '4 ~ 0 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1, 95 SEP 30, 95 WIND WIND SPEED(MPH)

DZRECTIOH CALM 0.6-1.4 3.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL H 0.011 F 229 2.065 1.147 0.092 0.000 0.000 0.000 0.000 3.545 HHE 0.007 0 '84 1.285 1.193 0.046 0.000 0.000 0.000 0.000 2.715 HE 0.005 0.184 0.780 0.229 0.046 0.000 0.000 0.000 0.000 1.244 ENE 0.005 0.184 0.826 0.597 0. 138 0.000 0.000 0.000 0.000 1.749 E 0.006 0.092 1.193 1.239 0.000 0.000 0.000 0.000 0.000 2.530 ESE 0.001 0.046 0.184 0.092 0.000 0.000 0.000 0.000 0.000 0.322 SE 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0 '92 SSE 0. 001 0.092 0.046 F 000 0.000 0.000 0 000 0.000 0.000 0.138 S 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SSW 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 SW 0.000 0 '46 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.092 WSW 0.000 0.092 0.000 0.000 F 000 F 000 0.000 0.000 0.000 0-092 W 0 F 000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WNW 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.092 HW 0.002 0.092 0.229 0.000 0.000 0.000 0.000 0.000 0.000 0.323 HNW 0.006 0.367 0.826 0.046 0.046 0.000 0.000 0.000 0.000 1. 291 P

SUBTOTAL 0.046 1.882 7.572 4.543 0.367 0.000 0.000 0.000 0.000 14.410 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2205 TOTAL HOURS OF STABILITY CLASS F 317 TOTAL HOURS OF VALID WZHD DZRECTIOH-WIND SPEED-STABILITY CLASS F 314 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY OBSERVATZOHS 2179 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 '3 AHD 45.30 METERS WIND SPEED AHD DIRECTION MEASURED AT 10 42 METER LEVEL DATE PRINTED: 27-OCT-95 MEAH WIND SPEED ~ 2.91 NOTE! TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-39

STABILITY CLASS' (DELTA T > 4.0 C/100 M)

BROWHS FERRY HUCLEAR PLANT JUL 1, 95 SEP 30, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1 ' 1.5-3.4 3 ~ 5-5. ~ 5.5-2.4 7. 5-12. 4 12. 5-18. 4 18. 5-24. 4 24.5 TOTAL H 0.000 0.872 1.469 0.184 0.000 0.000 0.000 0.000 0.000 2.524 HNE 0.000 0.000 0.184 1.056 0 '34 0.000 0.000 0.000 0.000 0.000 1.973 HE 0.092 0.505 0.000 0.046 0.000 0.000 0.000 0.000 0.642 ENE 0.000 0.000 0.505 0.229 0 F 000 F 000 0.000 0.000 0.000 0.734 E 0.000 0.000 0.184 0.184 0.000 0.000 0.000 0.000 0.367 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000'.000 0.000 0.000 0.000 SE 0.000 0.000 0.046 0 F 000 0.000 0 F 000 0.000 0.000 0.000 0.046 SSE 0 000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 4 ~ 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0 F 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 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 HW 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 HNW 0.000 0.184 0.184 0.000 0.000 F 000 0.000 0.000 0.000 0.367 SUBTOTAL 0.000 1.377 3.993 1.331 0.046 0.000 0.000 0.000 0.000 6.746 TOTAI HOURS OF VALZD STABILITY OBSERVATZONS 2205 TOTAL HOURS OF STABILITY CLASS G 149 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS G 147 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2179 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 10 '2 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WIND SPEED ~ 2.42 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS

Radiological Impact Assessment Brogans Ferry Nuclear Plant January - December 1995 Table 13 Joint Frequency Distribution in Percent for Ground Level Releases Fourth Quarter El-41

JOZHT PERCENTAGE FREQUENCIES O. D SPEED BY WIND DIRECTION FOR STABZLITY CLASS A (DELTA T(~-1.9 C/100 M)

BROWHS FERRY NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WIND WIND SPEED(MPH)

DZRECTIOH CALM 5.6-1.4 1.5-3. ~ 3.5-5. ~ 5.5-2. ~ 3.5-i'd 12.5-18.4 18.5-24.4 >=24.5 ,TOTAL H 0.000 0.000 0.000 0 000 0.046 0.273 0.046 0.000 0.000 0.365 HHE 0.000 0.000 0.000 0.000 0.046 0.319 0.000 0.000 0.000 0.365 HE 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 F 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 0.456 0.000 0.000 0.000 0.000 0 F 000 0.456 SE 0.000 0.000 0.046 1.322 0.000 0.000 0.000 0.000 0.000 1.367 SSE 0.000 0.000 0.046 0.684 0.091 0.046 0.000 0.000 0.000 0.866 S 0.000 0 000 0.137 0.182 0.046 0.000 0.000 0.000 0.000 0.365 SSW 0.000 0.000 0.137 0.091 0.000 0.000 0.000 0.000 0.000 0.228 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W F 000 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.046 WNW 0 F 000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.091 NW 0.000 0.000 0.000 0.000 0.000 0.137 0.000 0.000 0.000 0.137 HNW 0.000 0.000 0.000 0.000 0.046 0.046 0 '46 0.000 0.. 000 0.137 SUBTOTAL 0.000 0.000 0.365 2.826 0.273 0.957 0.137 0.000 0.000 4.558 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2199 TOTAL HOURS OF STABZLZTY CLASS A 100 TOTAL HOURS OF VALID WIND DIRECTIOH-WZHD SPEED-STABILITY CLASS A 100 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABIIITY OBSERVATIOHS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 10 '2 METER LEVEL DATE PRINTED: 24-JAN-96 MEAN WIND SPEED 35 5.78 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED HUMBERS

JOINT PERCENTAGE FREQUENCIES %D SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA TC -1.7 C/100 M)

BROWHS FERRY NUCLEAR PLANT OCT 1, 95 DEC 31, 95 WIND WIND SPEED(MPH)

DIRECTION 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.365 0.046 0.000 0.000 0.410 HNE 0.000 0.000 0.000 0.000 0.137 0.091 0.046 0.000 0.000 0.273 HE 0.000 0.000 0.000 0.000 0.000 0.137 0.091 0.000 0.000 0.228 EHE 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 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.182 0.000 0.000 0.000 0.000 0.000 0.182 SE 0.000 0.000 0.091 0.137 0.000 0.000 0.000 0.000 0 000 0.228 SSE 0.000 0.000 0.273 0.182 0.000 0.000 0.000 0.000 0.000 0.456 S 0.000 0.000 0.091 0.273 0 046 0.000 0.000 0.000 0.000 0.410 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 '46 WSW 0.000 0.000 0.000 0.046 0.091 0.000 0.000 0.000 0.000 0.137 W 0.000 0.000 0 F 000 0.046 0.182 0.091 0.000 0.000 0.000 0.319 WNW 0.000 0.000 0.000 0.000 0.000 0.137 0.091 0.000 0.000 0.228 NW 0.000 0.000 0.000 0.000 0.137 0.456 0.091 0.000 0.000 0.684 HNW 0.000 0.000 0.000 0.000 F 000 F 000 0.182 0.000 0.000 0.182 SUBTOTAL 0.000 0.000 0.501 0.957 0.593 1.276 0.547 0.000 0.000 3.874 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2199 TOTAL HOURS OF STABZLITY CLASS B 86 TOTAI HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABILITY CLASS B 85 TOTAL HOURS OF VALID WIND DIRECTION-WZND SPEED-STABILITY OBSERVATZOHS 2194 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 10 03 AHD 45.30 METERS WIND SPEED AHD DIRECTION MEASURED AT 10 '2 METER Z EVEL DATE PRZHTED- 24-JAN-96 MEAN WIND SPEED ~ 7.65 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS

H JOINT PERCENTAGE FREQUENCIES OP ND SPEED BY WIND DIRECTZOH POR STABILITY CLASS C (-1.7< DELTA T<m-1 ' C/100 M)

BROWHS P'ERRY NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WZHD WIND SPEED(MPH)

DIRECTION CAIM 0.6-1.4 1.3-3. 4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >>24.5 TOTAL H F 000 0.000 0.046 0.000 0.319 0.456 0.046 0.000 0.000 0.866 NHE 0.000 F 000 0.000 0.091 0.137 0.091 0.091 0.000 0.000 0.410 HE 0.000 0.000 0.000 0.000 0.000 0.228 0.000 0.000 0.000 0.228 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.228 0 F 000 0.000 0.000 0.000 0.000 0.228 SE 0.000 0.000 0.137 0.137 0 F 000 0.000 0.000 0.000 0.000 0.273 SSE 0.000 0.000 0.319, . 0.228 0.091 0.000 0.000 0.000 0.000 0.638 S 0.000 0.000 0.137'.182 0 '46 0.000 0.000 0.000 0.000 0.000 0.182 SSW 0.000 0 F 000 0.046 0.000 0.000 0.000 0.000 0.000 0.228 SW 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 F 000 0.000 WSW F 000 0.000 0.000 0.046 0.046 0.000 0 F 000 0.000 0.000 0.091 W 0.000 0.000 0.000 0.000 0.137 0.046 0.000 0.000 0.000 0.182 WNW 0.000 0.000 0.000 0.046 0.000 0.000 0.137 0.000 0.000 0.182 HW 0.000 0.000 0.046 0.091 0.182 0.593 0.137 0.000 0.000 1.048 NNW 0.000 0.000 0.046 0.000 0.091 0.547 0.000 0.000 0.000 0.684 SUBTOTAL 0.000 0.000 0.957 0.957 1.003 1.960 0 ~ 410 0.000 0.000 5.287 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OP STABILITY CIASS C 116 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZI ITY CLASS C 116 TOTAL HOURS OP VALID WZND DIRECTZOH-WIND SPEED-STABILITY OBSERVATZOHS 2194 TOTAI HOURS CALM 0 METEOROLOGICAL PACILZTY: BROWHS FERRY NUCLEAR PLANT STABZIITY BASED ON DELTA-T BETWEEN 10 03 AND 45.30 METERS WZHD SPEED AHD DZRECTZON MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JAN-96 MEAN WIND SPEED ~ 7.37 NOTE: TOTALS AHD SUBTOTAIS ARE OBTAINED PROM UNROUNDED NUMBERS El-44

JOINT PERCENTAGE PRE<)UEHCZES

~))

~HD SPEED BY WIND DIRECTION POR STABILITY CLASS D (-I 5< DELTA T<~-0.5 C/100 M)

BROWHS PERRY NUCLEAR PLANT OCT 15 95 DEC 315 95 WZHD WZHD SPEED(MPH)

DIRECTIOH CALM 0.6-1.4 1.5-3.4 2.5-5.4 5.5-2.4 7.5-1'2.4 12.5-18.4 18.5-24.4 24.5 TOTAL H 0.000 0.000 0. 13'7 0.228 1.231 1.869 0.137 0.000 0.091 3.692 HHE 0.000 0.000 0.228 0.365 0.593 1.367 0.046 0.000 0.000 2.598 HE 0.000 0.046 0.365 0.091 0.273 1.048 0.091 0.000 0.000 1.914 EHE 0.000 0.000 0>>137 0.046 0.273 0.182 0.000 0.000 0.000 0.638 E 0.000 0.000 0.501 0.593 0.046 0.046 0.000 0.000 0.000 1.185 ESE 0.000 0.000 0.593 1.185 0.456 0.000 0.000 0.000 0.000 2.233 SE 0.000 0.091 1.094 0.456 0.228 0.046 0.000 0.000 0 F 000 1.914 SSE 0.000 0.046 1.413 0.912 0.137 0.000 0.000 0 F 000 0.000 2.507 S 0.000 0.000 0.684 0.182 0.000 0.000 0.000 0.000 0.000 0.866 SSW 0.000 0 '46 0.501 0.091 0.000 0.000 0.000 0.000 0.000 0.638 SW 0.000 0.000 0.365 0.091 0 F 000 0.000 0.000 0.000 0.000 0.456 WSW 0.000 0.000 0.410 0.182 0 F 273 0 '28 0.000 0.000 0.000 1.094 W 0.000 0.000 0.273 0.456 0.456 0.456 0.046 0.000 0.000 1.686 WNW 0.000 0.046 0.091 0.228 0.365 0.775 0.273 0.091 0.000 1.869 NW 0.000 0.046 0.046 0.182 0.410 1.459 0 F 501 0.228 0.137 3.008 NNW 0.000 0.046 0.228 0.273 1.048 2.644 0.775 0.046 0.046 5.105 SUBTOTAL 0.000 0.365 7.065 5.561 5.789 10.119 1.869 0.365 0.273 31.404 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OP STABILITY CLASS D 692 TOTAL HOURS OP VALZD WIND DZRECTIOH-WIND SPEED-STABILITY CLASS D 689 TOTAL HOURS OF VALID WZHD DZRECTZOH-WZHD SPEED-STABILITY OBSERVATIOHS 2194 TOTAI HOURS CALM 0 METEOROLOGICAL PACZLITY: BROWHS PERRY NUCLEAR PLANT STABZIITY BASED OH DELTA-T BETWEEH 10 03 AHD 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED: 24-JAH-96 MEAN WIND SPEED ~ 6.97 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-45

JOINT PERCENTAGE FREQUENCIES O~HD SPEED BY WIND DZRECTZOH FOR STABILITY CLASS E t-0.5< DELTA T<~ 1 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WIHD WIND SPEED{MPH)

DZRECTZOH CALM 0.6-1 ' 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 H 0.002 0.000 0.456 0.365 0.593 0.365 0.000 0.000 0.000 1.779 NHE 0.002 0.046 0.410 0.410 0.228 0.684 0.091 0.091 0.000 1.962 HE 0.002 0.091 0.365 0.410 0.501 0.319 0.046 0.000 0.000 1.734 EHE 0.003 0.000 0.638 0.319 0.091 0.046 0.000 0.000 0.000 1.096 E 0.003 0.091 0.729 0 '84 0.000 0.000 0.000 0.000 0.000 1.507 ESE 0.007 0.228 1.459 1.367 0.273 0.000 0.000 0.000 0.000 3.334 SE 0.006 0.137 1.413 1.231 0.365 0.091 0.000 0.000 0.000 3 242 SSE 0.010 0.228 2 ~ 188 1.048 0.273 0.137 0.000 0.000 0.000 3.884 S 0.005 0.182 0.957 0.684 0.684 0.684 0.046 0.000 0 F 000 3.241 SSW 0.001 0 ~ 091 0.137 0.228 0.091 0.046 0.000 0.000 0.000 0.593 SW 0.001 0.000 0.273 0.137 0.046 0.000 0.000 0.000 0.000 0.457 WSW 0.001 0.000 0.228 0 '28 0.182 0.091 0.000 0.000 0.000 0 730 W 0.001 0.000 0.273 0 '91 0.182 0.000 0.000 0.000 0.000

~

0.548 WNW 0.000 0.000 0.091 0.091 0.137 0.091 F 000 0.000 0.000 0.411 HW 0.001 0.000 0.273 0.319 0.410 0.456 0.046 0.000 0.000 1.505 HHW 0.002 0.046 0.365 0.593 0.957 1.094 0.046 0.000 F 000 3.101 SUBTOTAL 0.046 1.139 10.255 8.204. 5.014 4.102 0.273 0.091 0.000 29.125 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS E 639 TOTAI HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS E 639 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILZTY OBSERVATZOHS 2194 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BhSED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WZHD SPEED AHD DIRECTION MEASURED AT 10.42 METER LEVEL DATE PRINTED- 24-JAH-96 MEAN WIND SPEED ~ 4.75 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS El-46

JOZHT PERCEHTAOE FREQUENCIES Or HD SPEED BY WIND DZRECTZOH FOR STABILITY CLASS F ( 1.5< DELTA T<~ 4.0 C/100 M)

BROWHS FERRY HUCLEAR PLAHT OCT 1 5 95 DEC 31 ~ 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1 ' 1.5-3.4 3.5-5.4 5.5-3. ~ 7. 5-12 . 4 12 . 5-18 . 4 18 . 5-24 . 4 >>24.5 TOTAL H 0.004 0.137 0.820 0.638 0.137 0.046 0.000 0.000 0.000 1.782 HHE 0.002 0.000 0. 501 0.684 0 '91 0.000 0.000 0.000 0.000 1.279 HE 0 '02 0.000 0.456 0.137 0.182 0.000 0.000 0.000 0.000 0.777 EHE 0.003 0.046 0.501 0.273 0.046 0.000 0.000 0.000 0.000 0.869 E 0.005 0.091 0.912 0.684 F 000 0.000 0.000 0.000 0.000 1.691 ESE 0.006 0.091 1.276 0 228 0.000 0.000 0.000 0.000 0.000 1.602 SE 0.009 0.228 1.732 0.182 0.000 0.000 0.000 0.000 0.000 2.151 SSE 0-007 0.137 1.276 0.319 0.000 0.000 0.000 0.000 0.000 1.739 S 0.001 0.000 0.273 0.684 0.228 0.000 0.000 0.000 F 000 1.186 SSW 0.001 0.046 0.182 0.000 0.000 0.000 0.000 0.000 0.000 0.229 SW 0 F 000 0.091 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.137 WSW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 W 0.001 0.091 0.046 0.000 0.000 0.000 0.000 0.000 F 000 0.137 WNW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 HW 0.002 0.137 0.273 0.046 0.000 0.000 0.000 0.000 0.000 0.458 NNW 0.002 0.000 0.365 0.456 0.365 0.046 0.000 0.000 0.000 1.232 SUBTOTAL 0.046 1 094 8.660 4.330 1.139 0.091 0.000 0.000 0.000 15 '60 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2199 TOTAL HOURS OF STABILITY CLASS F 337 TOTAL HOURS OF VAIZD WIND DIRECTZOH-WIND SPEED-STABILITY CLASS F 337 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZI ITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WZHD SPEED AHD DIRECTZOH MEASURED AT 10.42 METER LEVEL DATE PRZHTED: 24-JAN-96 MEAN WZHD SPEED ~ 3.08 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS E1>>47

I JOINT PERCENTAGE FREQUENCIES STABILITY CLASS G

~ND SPEED t DELTA T BROWHS FERRY NUCLEAR PLAHT BY WIND DIRECTION FOR 4.0 C/100 M)

OCT 1, 95 DEC 31, 95 WZND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3 ' 5 ' 5.5-7 4 7.5-12.4 12.5-18.4 18.5 24.4 >=24.5 TOTAL H 0.030 0.137 1.595 0.456 0.000 0.000 0.000 0.000 0.000 2.218 NNE 0.020 0.228 0.957 0.365 0.000 0.000 0.000 0 ~ OQO O.oao 1. 570 HE 0.009 0.182 0.365 0.137 0.000 0.000 0.000 0.000 0.000 0.693 ENE 0.009 0.046 0.456 0.182 0.000 0.000 O.QOO o.aao 0.000 0.692 E 0.007 0.137 0.273 0 ~ 182 0.000 0.000 0.000 0.000 0.000 0.600 ESE 0.004 0.091 0.137 0.046 0.000 0.000 o.oao 0.000 0.000 0.277 SE 0.013 0.365 0.410 0 ~ 000 0.000 0.000 0.000 0.000 0.000 0.788 SSE 0.019 0.046 1.048 0.501 0.046 0.000 0 ~ 000 0.000 0.000 1.660 S 0.007 0.091 0.319, , 0.273 0.046 0.000 0.. 000 0.000 0.000 0.000 0.000 0 '36 SSW 0.002 0.091 O.DOO 0.000 0.000 0.000 0.000 0.093 SW 0.001 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 WSW a ~ ooo 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 WHW 0.001 0.046 0.000 0.000 0.000 O.OOD 0.000 0.000 0.000 0.046 HW 0.006 0.182 0.137 0.000 0.000 0 ~ 000 0.000 0.000 0.000 0.325 HHW 0.009 0.319 0.228 0.091 0.000 0.000 0.000 0.000 0.000 0.648 SUBTOTAL 0.137 2.005 5.925 2.233 0.091 0.000 0.000 0.000 0.000 10 392 TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2199 TOTAL HOURS OF STABILITY CLASS G 229 TOTAL HOURS OF VALID WIND DIRECTIOH-WIND SPEED-STABILITY CLASS G 22&

TOTAL HOURS OF VALID WZHD DIRECTZOH-WZHD SPEED-STABILITY OBSERVATIONS 2194 TOTAL HOURS CALM METEOROLOGZCAL FACZLZTY BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND SPEED AND DIRECTION MEASURED AT 10 42 METER LEVEI DATE PRINTED: 24-JAH-96 MEAN WIND SPEED ~ 2 ~ 49 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-48

Radiological Impact Assessment Brogans Ferry Nuclear Plant January - December 1995 Table 14 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion First Quarter El-49

SPLIT JOINT PERCENTAGE FREQUEN E WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 Ot 2 GROUND LEVEL RELEASE MODE JAH 1, 95 MAR 31, 95 WIND WIND SPEED{MPH)

DIRECTZOH CALM 0 ~ 6-1. 4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.008 0.059 0.105 0.000 0.000 0.172 HHE 0.000 0.000 0.000 0.000 0.000 0.139 0.009 0.000 0.000 0.148 HE 0.000 0.000 0.000 0.000 0.000 0 '37 0.009 0.000 0.000 0.046 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0 F 000 0.000 E F 000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 F 000 0.000 0 000 0.000 0.000 0.000 0 F 000 0.000 SE 0.000 0.000 0.000 0.011 0.045 0.000 0.000 0.000 0.000 0.056 SSE 0.000 0.000 F 000 0.053 0.000 0.000 0.000 0.000 0.000 0.053 S 0.000 0.000 0.003 0.056 0.018 0.000 0.000 0.000 0.000 0.077 SSW 0.000 0.000 0.000 0.007 0.009 0.000 0.000 0.000 0.000 0.016 SW 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 WSW 0.000 0.000 0.000 0.000 0 '18 0.023 0.000 0.000 0.000 0.041 W 0.000 0.000 F 000 0.000 0.000 0.015 0.000 0.000 0.000 0.015 WHW 0.000 0.000 0.000 0.000 0.000 0 '37 0.034 0.000 0.000 0. 071 HW 0.000 0.000 0.000 0.000 0.009 0.058 0.088 0.000 0.000 0.154 HHW 0.000 0.000 0.000 0.000 0.001 0.089 0.064 0.000 0.000 0.155 SUBTOTAL 0.000 0.000 0.004 0.127 0.118 0 '57 0.308 0.000 0.000 1.014 TOTAL HOURS Ot VALID OBSERVATIONS 2137.000 TOTAL HOURS OF GROUND LEVEL RELEASE 279.630 TOTAL HOURS OF STABZLZTY CLASS A 21 '70 TOTAL HOURS OF GROUND LEVEL STABZLITY CLASS A 21.670 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45,30 METERS WIND DZRECTIOH MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER IEVEL EFtLUEHT VELOCITY ~ 12 ~ 60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAIHED tRON UNROUNDED HUMBERS E1-50

ED BY WIND DIRECTION FOR STABILITY CLASS B (-1. 9 < DELTA T<~-1 7 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAH 1, 95 MAR 31, 95 WIND WZHD SPEED(MPH)

DIRECTZOH CALM 0.6-1.4 1.5-3 4 3 '-5.4 5.5-7.4 7.5-12.4 12.5-18 ' 18.5-24.4 24.5 TOTAL H 0.000 0.000 0.000 0.001 0.005 0.030 0.075 0.000 0.000 0.111 HHE 0.000 0.000 0.000 0.000 0.013 0.038 0.013 0.000 0.000 0.064 HE 0.000 0.000 0.000 0.000 0 F 000 0.013 0.000 0.000 0.000 0.013 EHE 0.000 0.000 0 F 000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 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 0.001 0 000 0.000 0.000 0.000 0.000 0.001 SE 0.000 0.000 0 F 000 0.009 0.020 0.000 0.000 0.000 0.000 0.029 SSE 0.000 0.000 0.000 0 ~ 011 0.000 0.000 0.000 0.000 0.000 0.011 S 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.007 SSW 0.000 0.000 0.000 0.000 0.000 0.031 0.000 0.000 0.000 0.031 SW F 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 0.015 0 ~ 018 0.000 0.000 0.000 0.033 W 0.000 0;000 F 000 0.000 0 '03 0. 011 F 000 0.000 0.000 0.014 WHW 0.000 0.000 0.000 F 000 0.002 0.047 0.074 0.033 0 000 0.156 HW 0.000 0.000 0.000 0.000 0.007 0.045 0.034 0.039 0.000 0.124 HNW 0.000 0.000 0.000 0.000 0.011 0.022 0.019 0.000 0.000 0.051 SUBTOTAL 0.000 0.000 0.000 0.030 0.074 0.256 0. 214 0.072 0.000 0.647 TOTAL HOURS OF VALZD OBSERVATIONS 2137.000 TOTAL HOURS OF GROUND LEVEL RELEASE 279.630 TOTAL HOURS OF STABILITY CLASS B 13.830 TOTAL HOURS OF GROUND LEVEL STABZLZTY CLASS B 13.830 METEOROLOGICAL FACILITY'ROWHS FERRY NUCLEAR PLANT STABZLZTY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DZRECTZOH MEASURED AT 10.42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOIST PERCENTAGE FREGUEHCZE WIND SPEED BY WIND DIRECTION FOR STABILITY CIASS C {-1 7C DELTA T< -1 ' C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 1 Ot 2 GROUND LEVEL RELEASE MODE JAH 1, 95 - MAR 31, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5. ~ 5.5-7.4 7.5-13.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.000 0.012 0.007 0.041 0.000 0.000 0.060 HNE 0.000 0.000 0.000 0.003 0.008 0.029 0.010 0.000 0 F 000 0.050 HE 0 000 0.000 0.000 0.000 0.005 0.000 0.000 0.000 0.000 0.005 EHE 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 0.003 0.000 0.000 0.000 0.000 0 000 0.003 ESE 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 SE 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.000 0.000 0.020 SSE 0 F 000 0.000 F 000 < ~

0.006 0.000 0.000 0.000 0.000 0.000 0.006 S 0.000 0.000 0. 0.023 0.000 0.000 0.000 0.000 0.000 0.023 SSW 0.000 0.000 000'.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 SW 0 000 0.000 0.000 0.012 0.000 0.020 0.000 0.000 0.000 0.032 WSW 0.000 0.000 0.000 0:000 0.000 0.000 0.003 0 '05 0.036 0.000 0.000 0.000 0.045 W 0.000 0.006 0 ~ 015 0.000 0.000 0.000 0.022 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 '37 0.029 0.000 0.000 0 '66 HW 0 F 000 0.010 0.026 0.017 0.000 0.000 0 '53 HHW 0.000 0 F 000 0 000 0.000 0.000 0.007 0.000 0.000 0.000 F

0.007 SUBTOTAL 0.000 0.000 0.000 0.069 0.066 0.179 0.096 0 000 0.000 0.410 TOTAL HOURS Ot VALID OBSERVATIONS 2137.000 TOTAL HOURS Ot GROUND LEVEL RELEASE 279.630 TOTAL TOTAL HOURS Ot STABILITY CLASS C HOURS OF GROUND LEVEL STABILITY CLASS C 13 '60 8.770 METEOROLOGICAL FACILITY: BROWHS tERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROM UHROUHDED NUMBERS E1<<52

SPLIT JOINT PERCENTAGE FREQUEHCZE WIND SPEED BY WIHD DIRECTZOH FOR STABZLITY CLASS D (-1 5< DELTA T<~-,0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUHD LEVEL RELEASE MODE JAH 1, 95 MAR 31, 95 WZHD WIND SPEED(MPH)

DIRECTION CALM 0. 6-1. 4 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 0.018 0.094 0.399 0.299 0.000 0.000 0.810 NHE 0 F 000 0.000 0.000 0.024 0.185 0.370 0.022 0.000 0.000 0.601 HE 0.000 0.000 0.000 0.014 0.086 0.051 0.000 0.000 0.000 0.152 EHE 0.000 0.000 0.000 0.003 0.003 0.006 0.000 0.000 0 ~ 000 0.012 E 0.000 0.000 0.002 0.000 O.O18 0.015 0.000 0.000 0.000 0.036 ESE 0.000 0.000 0.002 0.014 0.032 0.000 0 000 0.000 0.000 0.049 SE 0.000 0.000 0.005 0.056 0.014 0.000 0.000 0.000 0.000 0.075 SSE 0.000 0.000 0.015 0.074 0 000 0.000 0.000 0 000 0.000 0.089 S 0.000 0.000 0.013 0.049 0.000 0.000 0.000 0.000 0.000 0.061 SSW 0.000 0.000 0.000 0.020 0.000 0.092 0.000 0.000 0.000 0.111 SW 0.000 0.000 0 002 0.028 0.027 0.000 0.000 0.000 0.000 0.057 WSW 0.000 0.000 0.000 0.012 0.017 0.120 0.053 0.000 0.000 0.202 W 0.000 0:000 0.000 0.016 0 048 0 ~ 089 0.047 0.000 0.000 0.200 WHW 0.000 0.000 0 000 0.000 0.021 0.129 0.341 0.137 0.000 0.628 HW o.aaa 0.000 0.000 0.000 0.014 0.241 0.261 0.290 0.000 0.806 HHW 0.000 0.000 0.000 0.016 0.102 0.240 0.180 0.036 0.000 0.575 SUBTOTAL 0.000 Q,QQQ Q 039 0.345 0.660 1.752 1.203 0.463 0.000 4 '63 TOTAL HOURS OF VALID OBSERVATZOHS 2137.000 TOTAL HOURS OF GROUND LEVEZ RELEASE 279.630 TOTAL HOURS OF STABILITY CLASS D 1161.660 TOTAL HOURS OF GROUND LEVEL STABZLZTY CLASS D 95.370 METEOROLOGZCAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTZOH MEASURED AT 10.42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26 APR-95 NOTE! TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS C

E1-53

SPLIT JOINT PERCENTAGE FREQUENCIE WIND SPEED BY WIND DIRECTZOH FOR STABILITY CLASS E (- .5< DELTA TCw,1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 OROUND LEVEL RELEASE MODE JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3 ~ 5-5.4 5.5-3 ~ 4 7 5-12 4 12.5-18.4 18 5-24 4 >>24.5 TOTAL N 0.000 0.000 0.004 0.068 0.073 0.153 0.029 0.000 0.000 0.327 HHE 0.000 0.000 0.008 0.058 0.038 0.080 0 F 020 0.000 0.000 0.203 HE 0.000 0.000 0.004 0.038 0.080 0.042 0.000 0.000 0.000 0.164 EHE 0.000 0.000 0.000 0.014 0.023 0.000 0.000 0.000 0.000 0.036 E a.aoo 0.000 0.018 0 027 0.028 0.000 0.000 0.000 0.000 0.073 ESE 0.000 0.000 0.032 0.156 0 030 0.000 0.000 0.000 0.000 0.219 SE 0.000 0.000 0.039 0.138 0.124 0.057 0.000 0.000 0.000 0.358 SSE 0.000 0.002 0.046 0.103 0.153 0.167 o.oaa 0.000 0.000 0.471 S 0.000 0.002 0.031 0.082 0.073 0.063 0.000 0.000 0.000 0.250 SSW o.aoo 0.000 0.011 0.016 0 009 0.047 0.000 0.000 0.000 0.083 SW 0.000 0.000 0.002 0.008 0 ~ 019 0.036 0.000 0.000 0.000 0.065 WSW 0.000 0.000 0.033 0 022 0.033 0.027 0.000 0.000 0.000 0 ~ 115 W 0 ~ 000 0:000 0.006 0.029 0.047 0.045 0.000 0.000 0.000 0.127 WHW 0.000 0.000 0.003 0.023 0. 017 0.055 0.000 0.000 0.000 0.099 HW 0.000 a.aaa 0 ~ 000 0.011 0.039 0.095 0.105 0.000 0.000 0.251 HNW 0.000 0.000 0.010 0.043 0.158 0.130 0.000 0.000 0.000 0.341 SUBTOTAL 0.000 0.004 0.249 0.838 0-943 0.994 0 ~ 154 0.000 0.000 3.182 TOTAL HOURS OF VALZD OBSERVATIONS 2137. 000 TOTAL HOURS Ot GROUHD LEVEL RELEASE 279.630 TOTAL HOURS OF STABILITY CLASS E 72'2 . 810 TOTAL HOURS OF OROUHD LEVEL STABILITY CLASS E 68.000 METEOROLOGICAL tACZLZTY BROWHS tERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DZRECTIOH MEASURED AT 10 ~ 42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12 '0 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS E1-54

4 SPLIT JOINT PERCENTAGE FREQUEHCIE WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1 ~ 5< DELTA T<~ 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLAHT PART 1 OF 2 GROUND LEVEL RELEASE MODE JAH 1 5 95 MAR 315 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0 '-1.4 1 5-3 4 5.5-5.4 5.5-7.4 7-5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL H 0.000 0.000 0.018 0.065 0.000 0.018 0.000 0.000 0.000 0.101 HHE 0 000 0.000 0.012 0.054 0.027 0.009 0.000 0.000 0.000 0.102 HE 0.000 0.000 0.016 0.013 0.007 0.000 0.000 0.000 0.000 0.036 ENE 0.000 0 F 000 0.017 0.013 0.015 0.000 0.000 0.000 0.000 0 045 E 0.000 0.000 0.020 0.033 0.000 0 000 0.000 0.000 0 ~ 000 0.052 ESE 0.000 0.000 0.029 0.024 0.007 0.000 0.000 0.000 0.000 0 060 SE 0.000 0.005 0.126 0.077 0.058 0.034 0.000 0.000 0.000 0.301 SSE 0.000 0.008 0.262 0.248 0.187 0.128 0.000 0.000 0.000 a.833 S 0.000 0.007 0.066 0.086 0.121 0.161 0.000 0.000 0.000 0 ~ 439 SSW 0 ~ 000 0.000 0.012 0.007 0.000 0.000 0.000 0.000 0.000 0.019 SW 0.000 0.003 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.010 WSW 0.000 0.000 0.005 0.015 0.000 0.000 0.000 0.000 0.000 0 F 020 W 0.000 0.'000 0.000 0.006 0.000 0 000 0.000 Q.ooo 0.000 o.ao6 WNW 0 000 0.000 0 ~ 000 0.000 0.015 0.000 0.000 0 ~ 000 0.000 0.015 HW 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.007 HHW 0.000 0.000 0.016 0.026 0.034 0.008 0.000 0.000 0.000 0.084 SUBTOTAL 0.000 0.022 0.605 0.666 Q.479 0.358 Q.aoa 0.000 0.000 2.130 TOTAL HOURS OF VALID OBSERVATIONS 2137.aoo TOTAL HOURS OF GROUND LEVEL RELEASE 279.630 TOTAL HOURS OF STABZLZTY CLASS F 161.160 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 45.510 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 10 WIND DIRECTION MEASURED AT 10 '2 '3 AND 45.30 METERS METER LEVEL WZHD SPEED MEASURED AT 10 42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED- 26-APR-9 5 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUHDED NUMBERS El-55

SPLIT JOIHT PERCEHTAGE PREQUEHCZE WIHD SPEED BY WIHD DIRECTIOH POR STABZLZTY CLASS G (DELTA T > 4.0 C/100 M)

BROWHS PERRY HUCLEAR PLAHT PART 1 OP 2,GROUHD LEVEL RELEASE MODE JAH 1, 95 MAR 31, 95 WZHD WIHD SPEEDtMPH)

DZRECTZOH CALM 0.6-2. ~ 1 '-3.4 3 5-5.4 5.5-7 ' 7.5-12.4 12.5-18.4 18.5-24.4 26.6 TOTAL H 0.000 0 000 0.006 0.017 0.000 0.000 0.000 0.000 0.000 0.023 HHE 0.000 0.000 0.013 0.011 0.025 0 000 0.000 0.000 0.000 0.049 HE 0.000 0.000 0.006 0.007 0.000 0.000 0.000 0.000 0 F 000 0.013 EHE 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 0.015 0.034 0.000 0.009 0.000 0.000 0.000 0.000 0.058 SSE 0.000 0.066 0 .408 '.319 0.038 0.000 0.000 0.000 0.000 0.830 S 0.000 0.015 '.

0.080 0.043 0.000 0.000 0.000 0.000 0 234 SSW 0.000 0.000 o96'.000 0.000 0.000 0 000 0.000 0.000 0.000 F

0.000 SW 0.000 0.000 0.001 0.000 , 0.000 0.000 0.000 0.000 0.000 0.001 WSW 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 W 0.000 0:000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 HW 0.000 '0. 000 0.002 0.008 0.000 0.000 0.000 0.000 0.000 0.011 HNW 0.000 0.000 0.007 0.013 0.000 0.000 0.000 0.000 0.000 0.020 SUBTOTAI 0.000 0.096 0.573 0.455 0.115 0.000 0.000 0.000 0.000 1.239 TOTAL HOURS OP VAIZD OBSERVATIOHS 2137.000 TOTAL HOURS OP GROUHD LEVEL RELEASE 279.630 TOTAL HOURS OP STABILITY CLASS G 36.910 TOTAL HOURS OP GROUHD LEVEI STABILITY CLASS G 26.480 METEOROLOGZCAI PACZLITY: BROWHS PERRY HUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WZHD DZRECTZOH MEASURED AT 10.42 METER IEVEL WZHD SPEED MEASURED AT 10 42 METER LEVEI EPPLUEHT VELOCITY ~ 12.60 M/S DATE PRZHTED: 26-APR-95 MOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED PROM UHROUHDED HUMBERS E1-56

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 15 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Second Quarter EI-57

SPLIT JOIHT PERCENTAGE FREQUENCIES 1IHD SPEED BY STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLAHT PART 1 OF 2 GROUHD LEVEL RELEASE MODE APR 1, 95 - JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0. 6-1. 4 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 H 0.000 0.000 0.000 0.000 0.024 0.161 0.009 0.000 0.000 0.195 HNE 0.000 0.000 0.000 0.001 0.007 0.023 0.000 0.000 0.000 0.030 HE 0.000 0.000 0.000 0.000 0.004 0.017 0.000 0.000 0.000 0.021 ENE 0.000 0.000 0.000 0.000 0.003 0.014 0.000 0.000 0.000 0.018 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 0.009 0.000 0.000 0.000 0.000 F 000 0.009 SE 0.000 0.000 0.005 0.020 0.000 0.000 0.000 0.000 0.000 0.025 SSE 0.000 0.000 0.050 0.068 0 '32 0.000 0.000 0.000 0.000 0.150 S 0.000 0.000 0.052 0.113 0.019 0.000 0.000 0.000 0.000 0.184 SSW 0.000 0.000 0.014 0.106 0.045 0.021 0.000 0.000 0.000 0.186 SW 0.000 0.000 0.007 0.032 0.015 0.000 0.000 0.000 0.000 0.054 WSW 0.000 0.000 0.000 0.018 0.041 0.009 0.000 0.000 0.000 0.068 W 0.000 0.000 0.000 0.002 0.019 0.006 0.000 0.000 0.000 0.027 WNW 0.000 0.000 0.000 0.000 0.007 0.028 0.000 0.000 0.000 0.034 HW 0.000 0.000 0.000 0.000 0.022 0.161 0.000 0.000 0.000 0.183 HNW 0.000 0.000 0.000 0.000 0.003 0.089 0.028 0.000 0.000 0.121 SUBTOTAL 0.000 0.000 0.128 0.369 0.240 0.529 0.037 0.000 0.000 1.304 TOTAL HOURS OF VALID OBSERVATIOHS 2142.000 TOTAL HOURS OF GROUND LEVEL RELEASE 188.460 TOTAL HOURS OF STABZLZTY CLASS A 27 '40 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS A 27.940 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DZRECTZON MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10 '2 EFFLUEHT VELOCITY ~ 12.60 M/S METER LEVEL DATE PRZHTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUHDED HUMBERS E1-58

0 ZH STABILITY CLASS B (-1.9< DELTA T<~-1.7 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.000 0.022 0.021 0.000 0.000 0.000 0.042 HNE 0.000 0.000 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.004 HE 0.000 0.000 0.000 0.002 0.010 0.011 0.000 0.000 0.000 0.023 ENE 0.000 0.000 0.000 0.000 0.007 0.013 0.000 0.000 0.000 0.020 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 ESE 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 SE 0.000 0.000 0.000 0 F 002 0.000 0.000 0.000 0.000 0.000 0.002 SSE 0.000 0.000 0.012 0.010 0.000 0.000 0.000 0.000 0.000 0.022 S 0.000 0.000 0.000 0.028 0.080 0.000 0.000 0.000 0.000 0.108 SSW 0.000 0.000 0.004 0.023 0.039 0.000 0.000 0.000 0.000 0.066 SW 0.000 0.000 0.000 0.019 0.009 F 000 0 F 000 0.000 0.000 0.028 WSW 0.000 0.000 0.000 0.008 0.011 0.000 0.000 0.000 0.000 0.020 W 0.000 0.000 0.000 0.003 0.017 0.000 0.000 0.000 0.000 0.020 WNW 0.000 0.000 0.000 0.001 0.026 0.014 0.000 0.000 0.000 0.042 HW 0.000 0.000 0.000 0.000 0.002 0.056 0.009 0.000 0 000 0.068 NNW 0.000 0.000 0.000 0.000 0.019 0.029 0.011 F 000 0.000 0.058 SUBTOTAL 0.000 0.000 0.016 0.098 0.247 0.144 0.020 0.000 0.000 0.525 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF GROUND LEVEL RELEASE 188 '60 TOTAL HOURS OF STABILITY CLASS B 11 ~ 240 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 11.240 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DZRECTZOH MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12 '0 '2 WIND SPEED MEASURED AT 10 M/S METER LEVEL DATE PRINTED: 24-JUL-95 NOTE< TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCEHTAGE FREQUENCIES WIND SPEED BY WIND DZRECTZOH POR STABILITY CLASS C (-1.7< DELTA T(~-1.5 C/100 M)

BROWNS PERRY HUCZEAR PLANT PART 1 OF 2 GROUHD LEVEL RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.004 0.020 0.008 0.000 0.000 0.000 0.032 NHE 0.000 0.000 0.000 0.003 0.005 0.014 0.000 0.000 0.000 0.022 HE 0.000 0.000 0.000 0.000 0.012 0.000 0.000 0.000 0.000 0.012 ENE 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.008 E 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0 ~ 007 '.000 ,

0.000 0.000 0.000 0.000 0 F 000 0.007 S 0.000 0.000 '.014 0.015 0.010 0.000 0.000 0.000 0.000 0.039 SSW 0.000 0.000 0.013 0.025 0.027 0.036 0.000 0.000 0.000 0.101 SW 0.000 0.000 0.006 0.012 0.000 0.000 0.000 0.000 0.000 0.018 WSW 0.000 0.000 0.000 0.016 0.024 0.000 0.000 0.000 0 F 000 0.040 W 0.000 0.000 0.000 0.000 0.023 0.000 0 F 000 0.000 0.000 0.023 WNW 0.000 0 F 000 0.000 0.000 0. 017 0.017 0.000 0.000 0 F 000 0.034 NW 0.000 0.000 0.000 0.000 0.008 0.030 0.000 0.000 0 F 000 0.038 NHW 0.000 0.000 0.000 0.000 0.013 0.046 0.000 0.000 0.000 0.059 SUBTOTAL 0.000 0.000 0.040 0.076 0.167 0.151 0.000 0.000 0. 000. 0.433 TOTAL HOURS OP VALID OBSERVATZONS 2142.000 TOTAL HOURS OP GROUND LEVEL RELEASE 188.460 TOTAL HOURS OP STABZLZTY CLASS C 9.280 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 9.280 HETEOROLOGZCAL FACILITY: BROWNS PERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WZND DIRECTION MEASURED AT 10.42 HETER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EPPZUEHT VELOCITY ~ 12.60 H/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROH UNROUNDED NUMBERS

SPLIT JOZHT PERCENTAGE PREQVEHCZES IHD SPEED BY WIND DIRECTION POR STABILITY CLASS D (-1.5< DELTA T<~-0 ' C/100 M)

BROWHS PERRY NUCLEAR PLAHT PART 1 OF 2 QROVHD LEVEI RELEASE MODE APR 1 ~ 95 JUH 30 ~ 95 WIND WIND SPEED(MPH)

DIRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >ss24. 5 TOTAL H 0.000 0.000 0.000 0.025 0.043 0.053 0.009 0.000 0.000 0.131 HNE 0.000 0.000 0.000 0.006 0.030 0.008 0.000 0.000 0.000 0 '44 HE 0.000 0.000 0.000 0.014 0.012 0.034 0.000 0.000 0.000 0.060 ENE 0.000 0.000 0.000 0 '18 0.000 0.000 0.000 0.000 0.000 0.018 E 0.000 0.000 0.005 0.022 0.004 0.018 0.000 0.000 0.000 0.049 ESE 0.000 0.000 0.006 0.034 0.013 0.009 0.000 0.000 0.000 0.062 SE 0.000 0.000 0.053 0.031 0 '47 0.039 0.000 0.000 0.000 0.169 SSE 0.000 0.000 0.111 0.049 0.000 0.000 0.000 0.000 0.000 0.160 S 0.000 0.000 0.112 0.263 0.229 0.070 0.000 0.000 0.000 0.674 SSW 0.000 0.000 0.065 0.215 0.214 0.080 0.000 0.000 0.000 0.574 SW 0.000 0.000 0.007 0.021 0.008 0.000 0.000 0.000 0.000 0.035 WSW 0.000 0.000 0.018 0.074 0.020 0.056 0.000 0.000 0.000 0.168 W 0.000 0.000 0.010 0.045 0.046 0.086 0.038 0.000 0.000 0.225 WNW 0.000 0.000 0 F 000 0.001 0.028 0 '66 0.059 0.032 0.000 0.186 HW 0.000 0.000 0.000 0.004 0.039 0.078 0.058 0.077 0.000 0.257 NNW 0.000 0.000 0 F 000 0.015 0.070 0.104 0.078 0.000 0.000 0.267 SUBTOTAL 0.000 0.000 0.386 0 '37 0 '04 0.700 0.243 0.109 0.000 3.079 TOTAL HOURS OP VALID OBSERVATIONS 2142.000 TOTAL HOURS OF GROUND LEVEL RELEASE 188.460 TOTAL HOURS OF STABILITY CLASS D 1004.920 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS D 65.950 METEOROLOGICAL FACZLZTY: BROWHS PERRY NUCIEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIHD DIRECTION MEASURED AT 10 '2 METER IEVEL WIHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS

0 SPLZT JOINT PERCEHTAGE FREQUEHCZE WZHD SPEED BY WZHD DIRECTION FOR STABZLZTY CLASS E (-0.5< DELTA T<~ 1 ~ 5 C/100 M)

BROWHS FERRY NUCLEAR PIANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1 ~ 95 JUH 30 ~ 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3 ' 3.5-5.4 5.5-7.4 7.5-12.4 12 '-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.017 0.061 0.013 0.000 0.000 0.000 0.000 0.092 HHE 0.000 0.000 0.006 0.054 0.040 0.058 0.000 0.000 0.000 0 '58 HE 0.000 0.000 0.003 0.040 0.053 0.017 0.000 0.000 0.000 0.113 ENE 0.000 0.000 0.003 0.023 0.000 0.016 0.000 0.000 0.000 0.042 E 0.000 0.000 0.019 0.023 0.007 0.000 0.000 0.000 0.000 0.048 ESE 0.000 0.000 0.061 0.028 0.016 0.020 0.000 0.000 0.000 0.126 SE 0.000 0.000 0.061 0.057 0.009 0.000 0.000 0.000 0.000 0.128 SSE 0.000 0.004 0.169 0.118 0.000 0.000 0.000 0.000 0.000 0.291 S 0.000 0.003 0.226 0.269 0.027 0.000 0.000 0.000 0.000 0.526 SSW 0.000 0.007 0.063 0.085 0.054 0.049 0.000 0.000 0.000 0.258

'SW 0.000 0.001 0.008 0.004 0.017 0.000 0.000 0.000 0.000 0 '30 WSW 0.000 0.002 0.022 0.029 0.032 0.000 0.000 0.000 0.000 0.085 W 0.000 0.000 0.008 0.015 0.000 0.008 0.000 0.000 0.000 0.031 WNW 0.000 0.000 0.003 0.000 0.012 0.000 0.000 0.000 0.000 0.015 HW 0.000 0.000 0.000 0.009 0.000 0.008 0.000 0.000 0.000 0.017 HHW 0.000 0.000 0.014 0.070 0.021 0.032 0.021 0.000 0.000 0.158 SUBTOTAL 0 F 000 0.016 0.684 0.886 0.301 0. 209 0.021 F 000 0.000 2.118 TOTAI HOURS OF VALID OBSERVATZOHS 2142. 000 TOTAL HOURS OF GROUND LEVEL RELEASE 188.460 TOTAL HOURS OF STABZLZTY CLASS E 811.230 TOTAL HOURS OF GROUND LEVEL STABZLZTY CLASS E 45.360 METEOROIOGZCAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10 '2 EFFLUEHT VELOCITY ~ 12.60 M/S METER LEVEL DATE PRINTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-62

SPLIT JOINT PERCEHTAG WIND SPEED BY WIND DIRECTION POR STABZLITY CLASS P ( 1.5< DELTA T<~ 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OP 2 GROUHD LEVEL RELEASE MODE APR 1, 95 - JUH 30, 95 WZHD WIND SPEED(MPH)

DZRECTIOH CALM 0.6-1.4 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 TOTAZ H 0.001 0.000 0.043 0.079 0.000 0.000 0 F 000 0.000 0.000 0.123 HHE 0.001 0.000 0.038 0.064 0.015 0.000 0.000 0.000 0.000 0.118 HE 0.000 0.009 0.021 0.027 0.008 0.008 0. 000. 0.000 0.000 0.073 ENE 0.000 0.003 0.025 0.031 0 '09 0.009 0.000 0.000 0.000 0.078 E 0.001 0.015 0.023 0.036 0.000 0.000 0 F 000 0.000 0.000 0.075 ESE 0.000 0.000 0.019 0.000 0.000 0.000 0.000 0.000 0.000 0.019 SE 0.000 0.009 0.015 0.008 0.000 0.000 0.000 0.000 0.000 0 '34 SSE 0.002 0.019 0.105 0.062 0.000 0.000 0.000 0.000 0.000 0.187 S 0.001 0.023 0.044 0.066 0.000 0.000 0.000 0.000 0.000 0.135 SSW 0.000 0.000 0.024 0.000 0.000 0.000 0.000 0.000 0.000 0.025 SW 0.000 0.005 0.005 0.005 0.000 0.000 0.000 0.000 0.000 0.015 WSW 0.000 0.000 0.000 0.000 0.000 0 F 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 WHW 0.000 0.000 0.002 0.000 0.000 0.009 0.000 0.000 0.000 0.011 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 NNW 0.000 0.000 0.022 0.039 0.014 0.000 0.000 0.000 0.000 0.076 SUBTOTAL 0.008 0.083 0.386 0.417 0.046 0.027 0.000 0.000 0~00 0.967 TOTAL HOURS OP VALID OBSERVATIONS 2142.000 TOTAL HOURS OF GROUHD LEVEL RELEASE 188.460 TOTAL HOURS OP STABILITY CLASS F 226.320 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS F 20.710 METEOROLOGICAL FACILITY: BROWNS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AND 45 WIHD DIRECTION MEASURED AT 10.42 METER LEVEL

'0 METERS WZHD SPEED MEASURED AT 10 42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRZHTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-63

SPLIT JOZHT PERCEHTAGE FREQUENCIES BY WIND DIRECTION FOR STABILITY CLASS G {DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE APR 1, 95 JUH 30, 95 WZHD WIND SPEED{MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.080 0.029 0 000 0.000 0.000 0.000 0.000 0.110 NNE 0.000 0.000 0.065 0 '51 0.000 0.000 0.000 0.000 0.000 0.116 HE 0.000 0.000 0.011 0.003 0.000 0.000 0.000 0.000 0.000 0.014 ENE 0.000 0.000 0.013 0.007 0.000 0.000 0.000 0.000 0.000 0.020 E 0.000 0.000 0.009 0.007 0.000 0.000 0.000 0.000 0.000 0.016 ESE 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.007 SE F 000 0.005 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.005 SSE 0.000 0.007 0.033 '.000 0.000 0.000 0.000 0.000 0.000 0.040 S 0.000 0 ~ 013 '.020 0.000 0.000 0.000 0.000 0.000 0.000 0.033 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 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.006 0.007 0.000 0.000 0.000 0.000 0.000 0.013 SUBTOTAL 0.000 0.025 0.243 0.104 0.000 0.000 0.000 0.000 0.000 0.373 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF GROUND LEVEL RELEASE 188.460 TOTAL HOURS OF STABILITY CLASS G 51.070 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 7.980 METEOROIOGZCAL FACZZ ZTY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 03 AHD 45 WIND DIRECTION MEASURED AT 10 '2 METER LEVEL

'0 METERS WZHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCZTY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-64

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 16 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Third Quarter El-65

SPLIT JOINT PERCENTAGE FREQUENCIES WIND SPEED BY WIND DIRECTION FOR CLASS A (DELTA TC~-1.9 C/100 M) 4'TABZLZTY BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 GROUHD LEVEL RELEASE MODE JUI 1, 95 SEP 30, 95 WIHD SPEED(MPH)

WIND DIRECTION CALM 5.6-1.4 1.5-3.4 3 '-5.4 5 '-3. ~ 7. 5-12.4 12. 5-18. 4 18. 5-24. 4 >~24.5 TOTAL H 0.000 0 F 000 0.000 0.002 0.020 0.140 0.009 0.000 0.000 0.172 NHE 0.000 0.000 0.000 0.000 0.029 0.135 0.017 0.000 0.000 0.182 HE 0.000 0.000 0.000 0.000 0.006 0.060 0.000 0.000 0.000 0.067 EHE 0.000 0.000 0.000 0.000 0.008 0.000 0.000 F 000 0.000 0.008 E 0.000 0.000 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.006 ESE 0.000 0.000 0 000 0.040 0.066 0.017 0.000 0.000 0.000 0.122 SE 0.000 0.000 0.009 0.128 0.014 0.000 0.000 0.000 0.000 0.151 SSE 0.000 0.000 0 F 021 0.158 0.000 0.000 0.000 0.000 0.000 0.179 S 0.000 0.000 0.007 0.041 0.000 0.000 0.000 0.000 0.000 0.048 SSW 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.008 SW 0.000 0.000 0.000 0.011 0 000 0.000 0.000 0.000 0.000 0.011 0.000 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.000 0.010 WSW W 0.000 0.000 0.000 0.004 0.023 0.000 0.000 0.000 0.000 0 '27 WHW 0.000 0.000 0.000 0.000 0.025 0.041 0.000 0.000 0.000 0.066 NW 0.000 0.000 0.000 0.001 0.038 0.123 0.008 0.000 0.000 0.171 NNW 0.000 0.000 0.000 0.001 0.006 0.062 0.000 0.000 0.000 0.068 SUBTOTAL 0.000 0.000 0.037 0.404 0.242 0.579 0.035 0.000 0.000 1.296 TOTAL HOURS OF VALID OBSERVATZOHS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151.820 TOTAL HOURS OF STABILITY CLASS A 28 ~ 140 TOTAL HOURS OF QROUHD LEVEL STABILITY CLASS A 28 '40 METEOROLOGICAL FACILITY: BROWHS FERRY HUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45 '0 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREGUENCZES WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1 9 44 4'. DELTA T<~-1. 7 C/100 M)

BROWHS FERRY HUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WIND SPEED(MPH)

DZRECTZON CAIM 0.6-1.4 1 '-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 H 0.000 0.000 0 000 0.004 0.041 0 018 0.000 0.000 0.000 0.063 HHE 0.000 0.000 0.000 0.000 0.000 0.003 0 '10 0.035 0.000 0.000 0.000 0.048 HE 0.000 0.000 0. 013 0.015 0.000 0.000 0.000 0.028 EHE 0.000 0.000 0.000 0.000 0.003 0.000 0. 000. 0.000 0.000 0.003 E 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.012 0.000 0.037 0.000 0.000 0.000 0.049 SE 0.000 0.000 0.006 0.015 0.006 0.000 0.000 0.000 0.000 0.028 SSE 0.000 0.000 0.004 0.016 0.000 0.000 0.000 0.000 0.000 0. 019 S 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SSW 0.000 0.000 0.000 0.026 0.000 0.000 0 F 000 0.000 0.000 0.026 SW 0.000 0.000 0.001 0.004 0.000 0.000 0.000 0.000 0.000 0.005 WSW 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0 001 W 0.000 0.000 0.000 0.001 0.026 0.005 0.000 0.000 F 000

~

0.032 WNW 0.000 0.000 0.000 0.000 0.017 0.012 0.000 0.000 0.000 0.029 HW 0.000 0.000 0.000 0.001 0.050 0.034 0.000 0 F 000 0.000 0.085 HNW 0 F 000 0.000 0.000 0.000 0.015 0.000 0.000 0.000 F 000 0.015 SUBTOTAL 0.000 0.000 0.018 0.083 0.182 0.155 0.000 0.000 0.000 0.438 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151.820 TOTAL HOURS OF STABILITY CLASS B 9.520 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS B 9.520 METEOROLOGICAL FACILITY: BROWHS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA<<T BETWEEH 10.03 AHD 45 WIND DIRECTION MEASURED AT 10.42 METER LEVEL

'0 METERS WIND SPEED MEASURED AT 10 42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-67

0 SPLIT JOINT PERCENTAGE FREQUENCIES STABILITY CLASS C (-' 4 BROWHS FERRY NUCLEAR PLANT WIND SPEED BY WIND DIRECTZOH FOR DELTA T <~-1. 5 C/100 M)

PART 1 OF 2 OROUHD LEVEL RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WIND SPEED(MPH}

DIRECTZON CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18 '-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.002 0.012 0.055 0.000 0.000 0.000 0.069 HHE 0.000 0.000 0.000 0.000 0.019 0.030 0.000 0.000 0.000 0.050 HE 0.000 0.000 0.000 0.000 0.003 0.007 0.000 0.000 o.oaa 0.011 EHE 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 0.014 0 ~ 000 0.000 0.000 0.000 0.017

-ESE 0.000 0 F 000 0.000 0.009 0.035 0.042 0.000 0.000 0.000 a.a87 SE 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 SSE 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.000 0.000 0.020 S 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.000 0.008 SSW 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.000 0.008 SW 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0 F 000 0.008 WSW 0.000 0.000 0.000 0.000 0.009 0.000 0.000 0.000 0.000 0.009 W 0.000 0.000 0.000 0.006 0.015 0.005 0.000 0.000 0.000 0.026 WNW 0.000 0.000 0.000 0.000 0.007 0.011 0.009 0.000 0.000 0.027 HW 0.000 0 ~ 000 0.000 0.002 0 ~ 006 0.035 0.000 0 ~ 000 o.ooo 0.043 HNW 0.000 0.000 0.000 0.000 0.005 0.007 0.000 0.000 0.000 0.012 SUBTOTAL 0.000 0.000 0.014 0.059 0.124 0.193 0.009 0.000 0.000 0.399 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151.820 TOTAL HOURS OF STABILITY CLASS C 8.670 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS C 8.670 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45 30 METERS WIND DZRECTZON MEASURED AT 10 42 METER LEVEL WIHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12 '0 M/S DATE PRINTED: 27-OCT-95 NOTE'OTALS AHD SUBTOTALS ARE OBTAZHED FROM UHROUHDED NUMBERS El-68

SPLIT JOINT PERCENTAGE FREQUEHCZE 'tfIHD SPEED BY WIND DIRECTION FOR F

STABILITY CLASS D DELTA T<m-0 ~ 5 C/100 M)

BROWHS FERRY NUCZEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1 ~ 95 SEP 30 ~ 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0*000 0.000 0.000 0.042 0.060 0.087 0.032 0 ~ 000 0.000 0.221 HHE 0 000 0.000 0.000 0.027 0.036 0.039 0.000 0.000 0.000 0.102 HE 0.000 0 ~ 000 0.000 0 F 008 0.010 0 ~ 006 0.000 0.000 0.000 0.024 EHE 0.000 0.000 0.000 0.019 0.049 0.000 0. 000- 0.000 0.000 0.068 E 0.000 0.000 0.002 0.023 0.032 0.039 0.000 0.000 0.000 0.096 ESE- 0.000 0.000 0.001 0.053 0 F 072 0.081 0.000 0.000 0.000 0.207 SE 0.000 0.000 0.039 0.140 0.110 0.000 0.000 0.000 0.000 0.289 SSE 0.000 0.000 0.057 0.141 0.000 0 000 0.000 0.000 0.000 0.198 S 0.000 0.000 0.036 0.080 0.137 0 000 0.000 0.000 0.000 0.253 SSW 0.000 0.000 0.027 0.072 0.043 0.000 0.000 0.000 0.000 0.142 SW 0.000 0.000 0.003 0.017 0.000 0.000 0.000 0.000 0.000 0.020 WSW 0.000 0.000 0.005 0.032 0.033 0.000 0.000 0.000 0.000 0.070 W 0.000 o.ooa o.oao 0.055 0 036 0.013 0.000 0.000 0.000 0.104 WNW 0.000 0.000 0.000 0.015 0.020 0.037 0.000 0.000 0.000 0.072 NW 0.000 0.000 0.000 0.023 0.023 0.006 0.000 0.000 0.000 0.051 NNW 0.000 0.000 0.000 0.050 0.031 0.052 0.009 0.000 0.000 0.142 SUBTOTAL 0.000 0.000 0.169 0.797 0.692 0.360 0.041 0.000 0 ~ 000 2.a6a TOTAL HOURS OF VALID OBSERVATZOHS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151 '20 TOTAL HOURS OF STABILITY CLASS D 1126 '40 TOTAL HOURS OF GROUND LEVEL STABIZ ITY CLASS D 44.750 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLAHT STABZLZTY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIHD DZRECTIOH MEASURED AT 10 42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS El-69

SPLIT JOINT PERCEHTAGE FREQUEHCZE ED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<~ 1 5 C/100 M)

BROWHS FERRY HUCLEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1t 95 SEP 30 '5 WIND WZHD SPEED{MPH)

DIRECTION CALM 0. 6-1. 4 1.5-3.4 3.5-5.4 5.5-7 ' 7.5-12.4 12.5-18.4 18.5-24.4 >m24.5 TOTAL H 0.000 0.000 0.062 0.090 0.069 0.000 0.000 0.000 0.000 0.221 HHE 0.000 0.000 0 022 0.102 0.018 0.017 0.000 0 000 0.000 0.160 HE 0.000 0.000 0.010 0.049 0.034 0.022 0.000 0.000 0.000 0.115 EHE 0.000 0.000 0.029 0.073 0 '07 0.000 0. 0.000 0.000 0.109 E 0 000 0.000 0.025 0.108 0 F 059 0.008 000'.000 0.000 0.000 0.200 ESE 0.000 0.000 0.057 0.097 0.072 0.009 0.000 0.000 0.000 0.234 SE 0.000 0 F 001 0.041 0.066 0.013 0.000 0.000 0.000 0.000 0.122 SSE 0.000 0.000 0.006 0.100 0.000 0.000 0 000 0.000 0.000 0.106 S 0.000 0.000 0.023 0.034 0.000 0.000 0.000 0.000 0.000 0.056 SSW 0.000 0.000 0.004 0.000 0.000 0.000 0.000 0.000 0.000 0.004 SW 0.000 0.000 0.000 0.000 0.008 0.000 0.000 0.000 0.000 0.008 WSW 0.000 0.000 0.004 0.001 0.000 0.000 0.000 0.000 0.000 0.005 W 0.000 0.000 0.000 0.008 0.005 0.000 0.000 0.000 0.000 0.013 WHW 0.000 0.000 0.000 0.010 0.000 0.000 0.000 0.000 0.000 0.010 HW 0.000 0.000 0.000 0.005 0.005 0.015 0.009 0.000 0.000 0.035 HNW 0.000 0.000 0.019 0.087 0.040 0.000 0.000 0.000 0.000 0.145 SUBTOTAL 0.000 0.001 0.300 0.831 0.331 0.071 0.009 0.000 0.000 1.543 TOTAL HOURS OF VAIZD OBSERVATIONS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151.820 TOTAL HOURS OF STABILITY CLASS E 713.070 TOTAL HOURS OF GROUHD LEVEL STABILITY CLASS E 33.520 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WIHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12. 60 M/S DATE PRZHTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCEHTAOE FREQUENCIES Y WIND DIRECTZOH FOR STABILITY CLASS F ( 1.5< DELTA T<~ 4. 0 C/100 M)

BROWHS FERRY NUCLEAR PLAHT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 95 - SEP 30, 95 WIND WIHD SPEED(MPH)

DIRECTION CALM 0 '-1.4 1.5-3.4 3.j-5.4 5.5-7. ~ 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAZ H 0.000 0.003 0.106 0.145 0.015 0.000 0.000 0.000 0.000 0.269 HNE 0.000 0.000 0.064 0.183 0.009 0.000 0.000 0.000 0.000 0.256 HE 0.000 0.000 0.033 0.034 0.008 0.000 0.000 0.000 0.000 0.075 EHE 0.000 0 000 0.036 0.077 0.024 0.000 0.000 0.000 0.000 0.137 E 0.000 0.000 0.039 0 '92 0.000 0.000 0.000 0.000 0.000 0.000 0.130 ESE 0.000 0.000 0.006 0.008 0.000 0.000 0.000 0.000 0.014 SE 0.000 0.000 0.003 0.000 0.000 0.000 0.000 F 000 0.000 0.003 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 0.000 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 WHW 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 HNW 0.000 0.000 0.026 0.000 0.006 0.000 0.000 0.000 0.000 0.033 SUBTOTAL 0.000 0.003 0.320 0.539 0.062 0.000 0.000 0.000 0.000 0.924 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF GROUND LEVEL RELEASE 151.820 TOTAL HOURS OF STABILITY CLASS F 241.410 TOTAL HOURS OF GROUND LEVEL STABZLZTY CLASS F 20.060 METEOROLOGICAL FACILITY BROWHS FERRY HUCLEAR PLANT STABZLZTY BASED ON DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10 42 METER LEVEL WIND SPEED MEASURED AT 10.42 METER LEVEL EFFLUENT VELOCITY ~ 12 '0 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCZE~ WIND SPEED BY WIND DIRECTION FOR r

STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWNS FERRY NUCLEAR PZAHT PART 1 OF 2 GROUND LEVEL RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WIND SPEEDtMPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.005 0.049 0.023 0.000 0.000 0.000 0.000 0.000 0.077 HHE 0.000 0.000 0.072 0.108 0.000 0.000 0.000 0.000 0.000 0.180 HE 0.000 0 000 0.010 0.000 0.008 0.000 0.000 0.000 0.000 0.018 ENE 0.000 0.000 0.018 0.010 0.000 0.000 0.000 0.000 0.000 0.028 E 0.000 0 F 000 0.008 0.012 0.000 0.000 0.000 0.000 0.000 0.020 ESE 0.000 0.000 0.000 o.ooo 0.000 0.000 0.000 0.000 0.000 0.000 SE 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE F

0.000 0.000 0.900 '.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 '.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 F 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 F 000 0.000 0.000 0.000 0 F 000 0.000 0 F 000 0.000 0.000 W 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0 F 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 F 000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.006 0.000 0.000 0.000 0.000 0.000 0.000 0.006 SUBTOTAL 0.000 0.005 0.164 0.153 0.008 0.000 0.000 0.000 0.000 0.330 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF GROUHD LEVEL RELEASE 151.820 TOTAL HOURS OF STABZLZTY CLASS G 44.550 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 7.160 METEOROLOGICAL FACILITY BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 '3 AHD 45 '0 METERS WIND DIRECTION MEASURED AT 10.42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS El-72

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 17 Joint Frequency Distribution in Percent for Split Level Releases Ground Level Portion Fourth Quarter El-73

SPLIT JOINT PERCEHTAGE PREQUEHCIES WIND SPEED BY WIND DZRECTZOH POR STABZLZTY CLASS A (DELTA T<~-1.9 C/100 M)

BROWHS PERRY NUCLEAR PLAHT PART 1 OP 2 GROUND LEVEL RELEASE MODE OCT 1, 95 DEC 31, 95 WIHD WIND SPEED(MPH)

DIRECTION CAI M 0.6-1.4 1 '-3.4 3.5-5.4 5 '-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.000 0.005 0.043 0.010 0.000 0.000 0.057 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.005 0.000

0. 051 0.000 0.000 0.000 0 '56 NE F 000 0.006 0.000 0.000 0.000 0.006 ENE 0.000 0.000 F 000 0.000 0.000 0.000 0.000'.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.027 0.000 0.000 0.000 0.000 0.000 0.027 SE 0.000 0.000 0.000 0.057 0.000 0.000 0.000 0.000 0.000 0.057 SSE 0.000 0.000 0.000 0.040 0.051 0.038 0.000 0,000 0.000 0.129 S 0.000 0.000 0.001 0.005 0.038 0.000 0.000 0.000 0.000 0.045 SSW 0.000 0.000 0.005 0.007 0.000 0.000 0.000 0.000 0.000 0.012 SW 0.000 0.000 0.000 0.002 0.000 0.000 0.000 0.000 0.000 0.002 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 F 000 0.007 0.000 0.000 0.000 0.007 WNW 0.000 0.000 0.000 0.000 0.000 0.008 0.009 0.000 0.000 0.018 NW 0.000 0.000 0.000 0.000 0.000 0.020 0.000 0.000 0.000 0.020 NNW 0.000 0.000 F 000 0.000 0.005 0.007 0.010 0.000 0.000 0.022 SUBTOTAL 0.000 0.000 0.006 0.138 0 ~ 104 0.029 0.000 0.000 0.459 TOTAL HOURS OP VALID OBSERVATZOHS 2161.000 TOTAL HOURS OP GROUND LEVEL RELEASE 255.450 TOTAL HOURS OP STABILITY CLASS A 9.910 TOTAL HOURS OP GROUND LEVEL STABILITY CLASS A 9.910 METEOROLOGICAL PACZLZTY: BROWHS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10 03 AHD 45 30 METERS WIND DIRECTZOH MEASURED AT 10 42 METER LEVEL WIHD SPEED MEASURED AT 10.42 METER LEVEL EPPLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 HOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIE WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-i.9< DELTA T<&-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 1 OF 2 OROUHD LEVEL RELEASE MODE OCT 1, 95 - DEC 31, 95 WIND WIND SPEED(MPH)

DZRECTIOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12 5-18.4 18.5-24.4 >a24.5 TOTAI N 0.000 0.000 0.000 0.000 0.000 0.052 0.009 0 ~ 000 0.000 0.061 NHE 0.000 0.000 0.000 0.000 0.010 0.009 0.010 0.000 0.000 0.029 HE 0.000 0.000 0.000 0.000 0.000 0.024 0.018 0.000 0 000 0.042 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0. 000'.oao 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 ESE 0.000 0.000 0 F 000 0.009 0.000 0.000 0.000 0.000 0.000 0.009 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 F 002 0.009 0.000 0.000 0.000 0.000 0.000 0.011 S 0.000 0.000 0.000 0.024 0.011 0.000 0.000 0.000 0.000 0.035 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 0.012 0.000 0.000 0.000 0 000 0.012 W o.aoo o.oao 0.000 0.000 0.021 0.017 0.000 0.000 0.000 0.037 WNW 0.000 0.000 0.000 0.000 0.000 0.025 0.019 0.000 0.000 0.045 HW 0.000 0.000 0.000 0.000 0.009 0.072 0.019 0.000 0.000 0.099 HNW 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 0.002 0.042 0.064 0 199 0.112 0.000 0.000 0. 41'l TOTAL HOURS OF VALID OBSERVATIONS 2161.000 TOTAL HOURS OF OROUND LEVEL RELEASE 255.450 TOTAL HOURS OF STABILITY CLASS B 9.830 TOTAL HOURS OF OROUHD LEVEL STABILITY CI,ASS B 9.020 METEOROI OGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN ,10 03 AHD 45 WIND DIRECTION MEASURED AT 10.42 METER LEVEL

'a METERS WZHD SPEED MEASURED AT 10.42 METER LEVEL EFFIUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-75

J5 SPLIT JOINT PERCENTAGE FREQUEHCIE WIND SPEED BY WIND DZRECTZOH FOR STABZLZTY CLASS C (-1. 1< DELTA T<~-1. 5 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 1 OP 2 GROUND LEVEL RELEASE MODE OCT -1 ~ 95 DEC 31 5 95 WIND WIND SPEED(MPH)

DIRECTZOH CALM 0.6-1.4 3.5-3.4 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 F 000 0.000 0.000 0.000 0.026 0.071 0.010 0.000 0.000 0.107 HNE 0.000 0.000 0.000 0.002 0.013 0.015 0-019 0.000 0.000 0.049 HE 0.000 0 000 0.000 0.000 0.000 0.038 0.000 0.000 0.000 0.038 EHE 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0 F 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 0.013 0.000 0.000 0.000 0.000 0.000 0.013 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 0.005 4 ~ 0.014 0.063 0.000 0.000 0.000 0.000 0.082 S 0.000 0.000 0.600. 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 0.005 0.006 0.000 0.000 0 000 0.000 0.010 W 0.000 0.000 0.000 0.000 0.013 0.007 0.000 0.000 0.000 0.020 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.047 0.000 0.000 0.047 HW 0.000 0.000 0.000 0.000 0.014 0 ~ 092 0.038 0 000 0.000 0.144 NHW 0.000 0.000 0.000 0.000 0.006 0.079 0.000 0 000 0.000 0.085 SUBTOTAL 0.000 0.000 0.010 0.034 0.142 0.302 0.114 0.000 0.000 0.602 TOTAL HOURS OF VALZD OBSERVATZOHS 2161.000 TOTAL HOllRS OF GROUHD LEVEL RELEASE 255.450 TOTAL HOURS OF STABILITY CLASS C 24.890 TOTAL HOURS OF GROUND LEVEl STABILITY CLASS C 13.000 METEOROLOGICAL FACILITY: BROWHS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 10.03 AHD 45.30 METERS WIND DZRECTZOH MEASURED AT 10.42 METER LEVEL WIHD SPEED MEASURED AT 10.42 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 HOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS El-76

~ . SPIZT JOINT PERCENTAGE PREQUENCZE STABILITY CLASS D (-1 IHD SPEED BY WIHD DZRECTIOH FOR 5< DELTA T<22-0.5 C/100 M)

BROWNS PERRY HUCIEAR PLANT PART 1 OF 2 GROUND LEVEL RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5 3.4 3.5-5.4 5.5-7 ' 7.5-12 4 12.5-18.4 18.5-24.4 24.2 TOTAL N 0.000 0.000 0.000 0.012 0.121 0.298 0.035 0 ~ 000 0.093 0. 559 ~

HHE 0.000 0.000 0.000 0.014 0.044 0.198 0.009 0.000 0.000 0.265 NE 0.000 O.ODO 0.000 0.001 0.027 0.162 0.018 0.000 0.000 0.208 EHE 0.000 0.000 0.000 0.000 0.031 0.027 0.000 0.000 0.000 0.058 E 0.000 0 ~ 000 0.001 0.026 0.006 0.008 0.000 0 ~ 000 0.000 0.041 ESE 0.000 0.000 0 '03 0.092 0.071 0.000 0.000 0.000 0.000 0.166 SE 0.000 0.000 0.009 0 '39 0.040 0.008 0.000 0.000 0.000 0.096 SSE 0.000 0.000 0.086 0.129 0 ~ 058 0.000 0.000 0.000 0.000 0.272 S 0.000 0.000 0.056 0 '15 D.DDD 0.000 0.000 0.000 0.000 0.072 SSW 0.000 0.000 0.012 0.015 0.000 0.000 0.000 0.000 0.000 0.027 SW 0.000 0.000 0.013 0.007 0.000 0.000 0.000 0.000 0.000 0.020 WS'W 0.000 0.000 0.000 0.012 0.034 0.055 0.000 0.000 0.000 0.101 W 0.000 0.000 0.002 0.019 0.062 0.085 0.010 0.000 0.000 0.177 WNW 0.000 0.000 0.000 0.000 0.027 0.142 0.112 0.080 0.000 0.360 HW 0.000 0.000 0.000 0.002 0.027 0.230 0.137 0.203 0.139 0.737 NNW 0.000 0.000 0.000 0.008 0.070 0.445 0.172 0.046 0.046 0.788 SUBTOTAL 0.000 0.000 0.182 0.391 0.619 1.657 0.492 0.329 0.278 3.948 TOTAL HOURS OF VALID OBSERVATIOHS 2161. 000 TOTAL HOURS OP GROUND LEVEL RELEASE 255.450 TOTAL HOURS OP STABZLZTY CLASS D 1113.390 TOTAL HOURS OP GROUND LEVEL STABILITY CLASS D 85.310 METEOROLOGICAL PACZLZTY: BROWHS PERRY HUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 10.03 AND 45.30 METERS WIND DIRECTZOH MEASURED AT 10.42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EPFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-77

SPLIT JOINT PERCENTAGE PREQUEHCZE CWIND SPEED BT WIND DIRECTION POR STABILITY CLASS E [-0.5< DELTA TC~ 1.5 C/100 M)

BROWHS FERRT NUCLEAR PLANT PART 1 OP 2 GROUND LEVEL RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WIND SPEED (MPH )

DIRECTION CAL'M 0.6-1.4 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 H 0.000 0.000 0.009 0.044 0.083 0 '62 0.000 0.000 0.000 0.198 HHE 0.000 0.000 0.002 0.029 0.037 0.123 0.050 0.090 0.000 0.331 HE 0.000 0.000 0.011 0.032 0.075 0.054 0.010 0.000 0.000 0.181 EHE 0.000 0 000 0.015 0.031 0.013 0.007 0.000 0.000 0.000 0.067 E 0.000 0.000 0.017 0.045 0.000 0.000 0.000 0.000 0.000 0.062 ESE 0.000 0.004 0.073 0.140 0.044 0.000 0.000 0.000 0.000 0.261 SE 0.000 0.000 0.113 0.196 0.076 0.029 0.000 0.000 0.000 0.414 SSE 0.000 0.004 0.251 0.285 0.179 0.139 0.000 0.000 0.000 0.857 S 0.000 0.000 0.093 0.125 0.202 0.478 0.046 0.000 0.000 0.944 SSW 0.000 0.000 0.002 0 '38 0.018 0 '28 0.000 0.000 0.000 0.087 SW 0.000 0.000 0.000 0.014 0.008 0.000 0.000 0.000 0.000 0.022 WSW 0.000 0.000 0.003 0.020 0.030 0.050 0.000 0.000 0.000 0.103 W 0.000 0.000 0.009 0.005 - 0.025 0.000 0.000 0.000 0 F 000 0.039 WNW 0.000 0.000 0.004 0.004 0.017 0.013 0.000 0.000 0.000 0.038 HW 0.000 0.000 0.000 0.022 0.053 0.079 0.009 0.000 0.000 0.164 NNW 0.000 0.000 0.009 0.050 0.131 0.190 0.010 0.000 0.000 0.390 SUBTOTAL 0.000 0.008 0.611 1.081 0.991 1.253 0.124 0.090 0.000 4. 157 TOTAL HOURS OP VALID OBSERVATIONS 2161.000 TOTAL HOURS OP GROUND LEVEL RELEASE 255.450 TOTAL HOURS OP STABILZTT CLASS E 742.360 TOTAL HOURS OF GROUHD LEVEL STABILITY CLASS E e9.e40 METEOROLOGICAL FACZLZTYC BROWHS PERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 10 '3 WIND DIRECTION MEASURED AT 10.42 METER LEVEL AHD 45.30 METERS WIND SPEED MEASURED AT 10.42 METER LEVEL EPPLUENT VELOCITY ~ 12 60 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-78

SPLIT JOINT PERCENTAGE FREQUEHCIE ~WIND SPEED BY WIND DIRECTZOH POR STABILITY CLASS P ( 1'5< DELTA T<~ 4.0 C/100 M)

BROWHS PERRY NUCLEAR PLANT PART 1 OP 2 GROUND LEVEL REIEASE MODE OCT 1 ~ 95 DEC 31 5 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 5.5-5.4 5.5-5.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.000 0.000 0.035 0.073 0.023 0.009 0.000 o.ooo 0.000 0.139 NNE 0.000 0.000 0.019 0.082 0.015 0.000 0 ~ 000 0.000 0.000 0.116 NE 0.000 0.000 0.014 0.019 0 '32 0.000 0.000 0.000 0.000 0.066 ENE 0.000 0.000 0.007 0.025 0.008 0.000 0. 0 000 0.000 0.040 E 0.000 0.007 0.017 0.064 0.000 0.000 000'.000 0.000 0.000 0.088 ESE 0.000 0.006 0.057 0.027 0.000 0.000 0.000 0.000 0.000 0.091 SE 0.000 0.006 0.144 0.027 0.000 0.000 0.000 0.000 0.000 0.177 SSE 0.000 0.016 0.164 0.088 0.000 0.000 0.000 0.000 0.000 0.268 S 0.000 0.000 0.037 0.128 0.059 0.000 0.000 0.000 0.000 0.224 SSW 0.000 0.003 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.010 SW 0.000 0.007 0.000 0.000 0 F 008 0.000 0.000 0.000 0.000 0.015 WSW 0 F 000 0.000 0 ~ 000 0.000 0.008 0 ~ 000 0.000 0 000 0.000 0.008 W 0.000 0.002 0.003 0.000 0 000 0.000 0.000 0.000 0.000 0.005 WHW 0.000 0.000 0.003 0.000 0.000 ,0. 000 0.000 0.000 0.000 0.003 NW 0 ~ 000 0.001 0.006 0.006 0.000 0.000 0.000 0.000 0.000 0.013 HHW 0 000 o.ooo 0.019 0.051 0.062 0.008 0.000 0.000 0.000 0.140 SUBTOTAL 0.000 0.049 0.531 0.590 0 '16 0.018 0.000 0.000 0.000 1.404 TOTAL HOURS OP VALID OBSERVATZOHS 2161.000 TOTAI HOURS OP GROUHD LEVEL RELEASE 255.450 TOTAL HOURS OP STABZI4ZTY CLASS P 173.060 TOTAL HOURS OP GROUND LEVEL STABILITY CLASS P 30.330 METEOROLOGICAL FACILITY: BROWHS PERRY NUCLEAR PLANT STABILITY BASED ON DELTA T BETWEEN 10.03 AHD 45.30 METERS WIND DIRECTION MEASURED AT 10 42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER IEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAN-96 NOTE: TOTALS AHD SUBTOTAI,S ARE OBTAINED PROM UHROUHDED NUMBERS El-79

SPLIT JOIST PERCENTAGE PREQUEHCIE STABILITY CLASS G (DELTA T WIND SPEED BY WZHD DIRECTION FOR

> 4.0 C/10D M) j BROWNS PERRY NUCLEAR PLANT PART 1 OP 2 GROUND LEVEL RELEASE MODE OCT 1, 95 - Dec 31, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1. 4 1.5-3.4 5.5-5.4 5.5-7.4 7 5-12.4 12.5-18.4 18.5-24 ' >~24.5 TOTAL H o.ooa 0.000 0.042 0.066 0.000 0.000 0.000 0.000 0.000 0.108 HNE 0.000 0.003 0.055 0.053 0.000 0.000 0.000 0.000 0.000 0.110 HE 0.000 0.011 0.012 0.021 o.aoa 0.000 0.000 0.000 0.000 0.043 EHE 0.000 0 ~ 000 0.017 0.013 0.000 0.000 0. 0.000 0.000 0.030 E 0.000 0.006 0 ~ 010 0.005 0 000 0.000 000'.OQO a.ooo O.aaa 0.021 ESE 0.000 0.001 0.007 0.002 0.000 0 ~ 000 0.000 0.000 0.000 0.010 SE 0.000 0.014 0.030 0.000 0.000 0.000 0.000 0.000 Q.DQO 0 044 SSE 0.000 0.005 0.130 , 0.175 0.025 0.000 0.000 0.000 0.000 0.335 S 0.000 0.000 0.050 0.050 0.010 0.000 0.000 0.000 0.000 0.109 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 D.OOO 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 WHW 0.000 D.aaa 0.000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0 000 HW 0.000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 NNW o.oao o.aao 0.016 0.009 0.000 0 ~ 000 O.ODO 0.000 0.000 0.025 SUBTOTAL 0.000 0.040 0.366 0.394 Q.034 0.000 0.000 0.000 0.000 0 '35 TOTAL HOURS OF VALID OBSERVATZOHS 2161. 000 TOTAL HOURS OP GROUHD LEVEL RELEASE 255.450 TOTAL HOURS OP STABILITY CLASS G 87.560 TOTAL HOURS OF GROUND LEVEL STABILITY CLASS G 18.040 METEOROLOGICAL PACZLITY: BROWHS PERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 10.03 AHD 45.30 METERS WIHD DIRECTION MEASURED AT 10.42 METER LEVEL WZHD SPEED MEASURED AT 10.42 METER LEVEL EPPLUEHT VELOCITY ~ 12 60 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-80

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 18 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion First Quarter E1-81

SPLZT JOINT PERCENTAGE FREQUEHCZE WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWHS FERRY NUCLEAR PLAHT PART 2 Ot 2 ELEVATED RELEASE MODE JAH 1, 95 - MAR 31, 95 WIND WIND SPEED{MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24 ' >~24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 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 F 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 F 000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 S 0 F 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 F 000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 F 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 WHW 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 TOTAL HOURS Ot VALID OBSERVATIONS 2137.000 TOTAL HOURS Ot ELEVATED RELEASES 1857.370 TOTAL HOURS OF STABILITY CLASS A 21 670 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOOZCAL FACILITY: BROWHS tERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WZHD DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRIHTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED tRON UNROUNDED NUMBERS E1-82

ZHT EHTAGE RE UEHCZE WZHD S STABZLZTY CLASS B (-1.9< DELTA TC~-1 7 C/100 M)

BROWHS FERRY HUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0 F 000 F 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 F 000 0.000 0.000 0.000 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 F 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 F 000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2137.000 TOTAL HOURS OF ELEVATED RELEASES 1857.370 TOTAL HOURS OF STABILITY CLASS B 13.830 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 45.30 AHD 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-83

SPLIT SOZNT PERCENTAGE FREQUENCIE CWIND SPEED BT WIND DIRECTION FOR STABZLITT CLASS C (-I 7< DELTA T<~-1.5 C/100 M)

BROWHS tERRY HUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAN 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1 ' 1 5-3 ' 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL N 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.000 NNE 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.027 0.000 0.027 NE 0.000 0 ~ 000 0 ~ 000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000'.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 E 0.000 0.000 0.000 0.000 t). 000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.094 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 0iooo 0.000 0.000 0.000 0.000 0.000 0.000 WSW a.oao 0.000 0.000 0'000 0.000 0.044 0.000 0.000 0.000 0 ~ 044 W 0.000 0.000 0.000 0.000 0.000 0.040 0.038 0.000 0.000 0.079 WHW 0.000 0.000 0 000 0.000 o.ooa 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0 ~ 000 0.000 0.000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0 ~ 000 0.047 0.047 0 000 0.084 0.038 o.a27 0.000 0.243 TOTAL HOURS OF VAIID OBSERVATIONS 2137.000 TOTAL HOURS OP ELEVATED RELEASES 1857.370 TOTAL HOURS OF STABILITY CLASS C 13.960 TOTAL HOURS OF ELEVATED STABILITY CLASS C 5 190 METEOROI,OQICAL PACILITT. BROWHS PERRT NUCLEAR PLAHT STABZLZTT BASED ON DELTA-T BETWEEN 45 WIND DIRECTION MEASURED AT 45 '7 '0 AND 89 METER LEVEL

'9 METERS WIND SPEED MEASURED AT 45 67 METER LEVEL EFPLUEHT VELOCITY ~ 12 '0 M/S DATE PRINTED: 26-APR-95 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-84

SPLIT JOINT PERCENTAGE FREQUENCZE WZHD SPEED BY WZ DZR ZO STABILITY CLASS D {-1-5< DELTA T<~-0.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1 4 1.5-3.4 3.5-5 ' 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 )~24.5 TOTAL H 0.005 0.001 0.000 0.000 0.328 0.094 0.328 0.853 2 '24 2.541 0.399 0.000 7.077 HNE 0.421 0.998 4.142 1.717 0.069 0.000 7.442 HE 0 '03 0.000 0.187 0.234 0.583 1.407 0.192 0.000 0.000 2.605 EHE 0.003 0.000 0.234 0.234 0.362 0.082 0.000 0.000 0.000 0.915 E 0.001 0.000 0.094 0.094 0. 231 0.080 0.039 0 F 000 0.000 0.538 ESE 0.005 0.000 0.328 0.515 0.409 0.572 0.039 F 000 0.000 1.867 SE 0.005 0.000 0.328 1.310 0.231 0.820 0.608 0.126 0.000 3 428 SSE S

0 F 002 0.005 0.000 0.047 0.140 0.281 0.421 0.421 0.276 0.137 0.617 0.686 0 '33 0.008 2.283 1 058 0.608 0.125 0.004 2.685 SSW 0 '03 0.000 0.187 0.328 0.088 F

0.527 0.606 0.015 0.002 1.756 SW 0.004 0.000 0.281 0.328 0.093 0.243 0.306 0.121 0.000 1.375 WSW 0.003 0.000 0.187 0.374 0.314 0.448 0.493 0.152 0.010 1.981 W 0.003 0.000 0.187 0.421 0.584 0. 811 0.454 0.187 0.000 2.647 WNW 0.002 0.047 0.094 0.374 0.274 0.730 1.593 0.409 0.014 3.538 HW 0.003 0.001 0.000 0 '34 0.374 0.456 1.302 1.601 0.644 0.017 4.633 NNW 0.000 0.047 0 ~ 187 0.852 2.474 1.335 0.222 0.010 5.127 SUBTOTAL 0.047 0.094 3.229 6.364 6.739 17.937 12.818 2.603 0.066 49 897 TOTAL HOURS OF VALID OBSERVATIONS 2137.000 TOTAL HOURS OF ELEVATED RELEASES 1857.370 TOTAL TOTAL HOURS HOURS OF STABILITY CLASS D OF ELEVATED STABZLITY CZASS D 1161 '60 1066.290 METEOROLOGICAL FACILZTY: BROWNS FERRY HUCIEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 45.30 AHD 89.59 METERS WZHD DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER IEVEI EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26-APR-95 NOTE. TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-85

't A QUEHCIES WI Y IHD DIRECTIOH FOR STABILITY CLASS E (-0. 5< DELTA T<~ 1. 5 C/100 M)

BROWHS FERRY HUCLEAR PLAHT PART 2 OF 2 ELEVATED RELEASE MODE JAH 1, 95 MAR 31, 95 WZHD WIHD SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 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 H 0.000 0.000 0.094 0 '21 0.543 0.815 0.113 0.000 0.000 1.986 HHE 0.000 0.000 0.094 0.374 0.579 0.815 0.269 0.000 0.000 2.131 HE 0.000 0.000 0 '94 0 '40 0.274 0.667 0.114 0.000 0.000 1.289 EHE 0.000 0.000 0.047 0.374 0.139 0.334 0.000 0.000 0.000 0.894 E 0.000 0.000 0.094 0.047 0.138 0.532 0.077 0.000 0.000 0.888 ESE 0.000 0.000 0.094 0.328 0.270 1.324 0.039 0 F 000 0.000 2.054 SE 0.000 0 F 000 0.328 0.936 0.897 1.696 1.026 0.241 0.008 5.131 SSE 0.000 0.000 0'234 0.234 0.501 1.303 2.272 0.351 0.039 4.934 S 0.000 0.000 '.140 0.515 0.448 0.610 0.868 0.093 0.005 2.679 SSW 0.000 0.047 0.187 0.187 0.459 0.824 0.000 0.000 0.000 1.703 SW 0.000 0.094 0.094 0.094 0.264 0.294 0.037 0.016 0. 011 0.905 WSW 0.000 0.000 0.047 0.187 0.224 0.462 0.345 0.029 0.000 1.294 W 0.000 0:047 0.094 0.187 0.229 0.493 0.268 0.000 0.000 1.318 WHW 0.000 0.047 0.094 0.047 0.047 0.163 0.269 0.000 0.000 0.665 HW 0.000 0.047 0.094 0.094 0.226 0.655 0.190 0.064 0.000 1.368 HHW 0.000 0.000 0.000 0.234 0.227 0.945 0.229 0.000 0.000 1.635 SUBTOTAL 0.000 0.281 1 F 825 4.399 5.465 11.932 6.117 0.794 0.064 30.876 TOTAL HOURS OF VALID OBSERVATIOHS 2137.000 TOTAL HOURS OF ELEVATED RELEASES 1857.370 TOTAL HOURS OF STABILITY CLASS E 727.810 TOTAL HOURS OF ELEVATED STABILITY CLASS E 659.810 METEOROLOGICAL FACZLZTY. BROWHS FERRY HUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEH 45.30 AHD 89.59 METERS WZHD DIRECTIOH MEASURED AT 45.67 METER LEVEL WZHD SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRZHTED: 26-APR-95 HOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UHROUHDED HUMBERS El-86

SPLIT JOINT PERCEHTAGE FREQUENCIES I SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1 5< DELTA T<~ 4 0 C/100 M)

BROWHS tERRY NUCLEAR PLANT PART 2 Ot 2 ELEVATED RELEASE MODE JAH 1 ~ 95 MAR 31, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 1.5-3 ' 3.5>>5.4 5.5-7.4 7 '-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.094 0.047 0.000 0 000 0.000 F 000 0.000 0.140 HHE 0.000 0.047 0.000 0.047 0.044 0.125 0.000 0.000 0.000 0.262 HE 0.000 0.094 0.000 0.000 0.046 0.042 0.000 0.000 0.000 0.182 EHE 0.000 0.000 0.000 0.047 0.000 0.203 0.039 0.000 0.000 0.288 E 0.000 0.000 0.000 0.047 0.044 0.326 0.000 0.000 0.000 0.417 ESE 0.000 0.047 0.094 0.187 0.270 0.209 0.000 0.000 0.000 0.806 SE 0.000 0.000 0.140 0.281 0.454 0.292 0.000 0.000 0.000 1.167 SSE 0.000 0.047 0.000 0.094 0.355 0.288 0.000 0.000 0.000 0.783 S 0.000 0.000 0.000 0.000 0.177 0.083 0.000 0.000 0.000 0.261 SSW 0.000 0.000 0.000 0.094 0.045 0.417 0.000 0.000 0.000 0.556 SW 0.000 0.000 0.047 0.094 0.046 0.043 0.000 0.000 0.000 0.230 WSW 0.000 0.000 0.000 0.047 0.092 0.000 0.000 0.000 0.000 0.139 W 0.000 0:000 0.047 0.000 0.000 0.041 0.000 0.000 0.000 0.088 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 F 000 0.000 0.047 0.000 0.000 0.000 0 F 000 0.000 0.047 NNW 0.000 0.000 0.000 0.047 0 000 0.000 0.000 0.000 0.000 0.047 SUBTOTAL 0.000 0.234 0 '21 1.076 1.572 2.069 0.039 0.000 0.000 5.412 TOTAL HOURS Ot VALID OBSERVATIONS 2137.000 TOTAL HOURS Ot ELEVATED RELEASES 1857.370 TOTAL HOURS Ot STABZLZTY CLASS F 161.160 TOTAI HOURS OF ELEVATED STABILITY CLASS t 115.650 METEOROLOGZCAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 30 AND 89 WIND DZRECTIOH MEASURED AT 45.67 METER LEVEL

'9 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOZHT PERCEHTAOE PREQUSNCISS 'RIND SPEED BY WIND DIRECTION POR STABZLZTY CLASS 6 (DSITA T > 4 0 C/100 Ml BROWHS PERRY HUCIEAR PLANT PART 2 Ot 2 SLEVATED RSLEASE MODE JAH 1 e 95 MAR 31 i 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7-5-12 ' 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0 ~ 000 0.093 a.aao 0.000 0.000 0.000 0.093 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.000 EHE 0.000 0.000 0.000 0.000 0.000 0.081 0.000 0.000 0.000 0.081 E 0.000 0.000 O.DOO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0 ~ 000 0.000 0.047 0.091 0.041 0.000 0.000 0.000 0.179 SSE 0.000 0.000 0.000 0.047 0.047 0 042 0.000 0.000 0.000 0.135 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 o.oao 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 WHW 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 HHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.094 a.23a 0.164 0.000 0.000 O.ODO 0.488 TOTAL HOURS OP VALID OBSERVATZOHS 2137.000 TOTAL HOURS OP ELEVATED RELEASES 1857.370 TOTAL HOURS Ot STABZLZTY CLASS O 36.910 TOTAI HOURS OF ELEVATED STABILITY CLASS 0 10.430 METEOROLOGICAL PACILZTY- BROWHS FERRY NUCLEAR PIAHT STABILITY BASED OH DELTA-T BETWESH 45.30 AHD 89 WIND DIRECTZOH MEASURED AT 45. 67 METER LEVEI

'9 METERS WIND SPEED MEASURED AT 45.67 METER IEVEL EFFLUENT VELOCITY 12 ~ 60 M/S DATE PRINTED: 26-APR-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED tROM UNROUNDED NUMBERS El-88

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 19 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Second Quarter E1-89

'I SPLZT JOINT PERCENTAGE FREQUENCIES ZHD SPEED BY WIND DZRECTZON FOR STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 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 F 000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000, . 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0. 000. 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0 F 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 WHW 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 NW F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0 000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF ELEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS A 27.940 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROIOGICAL FACILITY: BROWNS FERRY NUCLEAR PLAHT STABZLITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND DIRECTZOH MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45 67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT J INT PERCENTAGE FREQUENCIES WZH E BY N IRECTZOH FOR STABILITY CLASS B l-149< DELTA T<m-1.7 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0 '-1.4 3.5-3.4 3 ~ 5-5.4 5.5-7.4 7. 5-12. 4 12. 5-18 .4 18. 5-24 .4 >5324. 5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 F 000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 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 F 000 0.000 0.000 0.000 0.000 F 000 0.000 SUBTOTAL 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF ELEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS B 11.240 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 30 AND 89 59 METERS WZHD DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~- 12 '0 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-91

STABILITY CLASS C {-1 ~ 7< DELTA T<~-1. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 - JUH 30, 95 WIND WIHD SPEED(MPH)

DIRECTION CALM 4.6-1.4 1.5-3.4 3.5-5.4 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 >a24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNE 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 F 000 HE 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 F 000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 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 F 000 0.000 F 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 F 000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF ELEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS C 9.280 TOTAL HOURS OF ELEVATED STABZLITY CLASS C 0.000 METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIHD DIRECTZOH MEASURED AT 45.67 METER LEVEL WZHD SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRZHTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-92

SPLIT JOINT PERCENTAGE FREQUENCZE~ ',WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1. 5< DELTA T<~-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 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 H 0.001 0.047 0.047 0.140 0.487 1.706 0.418 0.036 0.000 2.881 NNE 0.001 0.000 0.047 0.514 0.452 0.951 0.154 0.000 0.000 2.117 HE 0.000 0.000 0.000 0.233 0.450 0.531 0.039 0.000 0.000 1.253 EHE 0.002 0.000 0 '87 0.233 0.178 0.247 0.039 0.000 0.000 0.886 E 0.002 0.047 0.140 0.233 0.047 0.127 0.039 0.000 0.000 0.635 ESE 0.002 0.000 0.140 0.467 0 '19 0.042 0.000 0.000 0.000 0.970 SE 0.006 0.047 0.514 0.980 0.767 0.330 0.153 0.061 0.008 2.865 SSE 0.007 0.000 0.654 0.934 0.723 0.874 0.533 0.052 0.000 3.776 S 0.007 0.047 0.560 0.840 1.076 1.559 1.255 0.268 0. 017 5.629 SSW 0.006 0.000 0.514 0.980 0.718 1.310 1.178 0.405 0.000 5.112 SW 0.006 F 000 0.514 1.120 0.676 1 '73 0.116 0.000 0.000 3.505 WSW 0.002 0.000 0.140 0.747 0.491 0.745 0.377 0.000 0.000 2.501 W 0.002 0.000 0.140 0.934 0.758 0 '43 0.077 0.085 0.000 2.538 WNW F 001 0.000 0 '93 0.420 0.904 1 ~ 033 0.345 0.067 0.000 2.864 HW 0.001 0.000 0.093 0.233 0.629 1.804 0.614 0.211 0.016 3.602 NNW 0.002 0.000 0.140 0.280 0.265 1.222 0.794 0.000 0.000 2.702 SUBTOTAL 0.047 0.187 3.922 9.290 8.939 14. 098 6.129 1.184 0.041 43.836 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF ELEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS D 1004.920 TOTAL HOURS OF ELEVATED STABILITY CLASS D 938.970 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89 WZND DIRECTION MEASURED AT 45.67 METER LEVEL

'9 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS El-93

SPLIT JOINT PERCENTAGE FREQUENCIES WIND SPEED BY WIND DIRECTION POR STABILITY CLASS E (-0. 5 < DELTA TC~ 1. 5 C/100 M)

BROWHS PERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE APR 1, 95 JUN 30, 95 WZHD WIND SPEED(MPH)

DIRECTION CAIM 0.6-1.4 1 '-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 H 0.010 0.093 0.187 0.140 0.536 0 656 0.039 0.000 0.000 1.662 HHE 0. 012 0.093 0.233 0.373 0.451 0.902 0.190 0.000 0.000 2.255 HE 0.007 0.000 0.187 0.093 0.317 1 F 027 0.000 0.000 0.000 1.632 EHE 0.007 0.000 0.187 0.327 0.541 0.331 0.037 0.000 0.000 1 429 E 0.012 0.093 0.233 0.467 0 '05 0.168 0.039 0.000 0.000 1

~

~ 418 ESE 0.012 0.047 0.280 0.700 0.624 0.425 0.037 0.027 0.000 2.152 SE 0.024 0.093 0.560 0.794

'.607 0.814 0 '58 0.339 0. 071 0.000 3.153 SSE 0 022 0.140 0.467 0.272 1.132 0.838 0.272 0.000 3.750 S 0.026 0.000 '.700 0.700 0.547 1.511 1.861 0.284 0.000 5.630 SSW 0.010 0.000 0.280 0.980 0.449 0.864 1.099 0.234 0.000 3.916 SW 0.012 0.000 0.327 0.560 0.674 0.458 0.342 0.036 0.000 2.410 WSW 0.005 0.000 0.140 0.514 0.228 0.367 0.191 0.000 0.000 1.445 W 0.012 0.000 0.327 0 420 0.593 0.248 0.076 0.000 0.000 1.676 WNW 0.005 0.047 0.093 0.093 0.044 0.125 0.038 0.000 0.000 0.445 HW 0.002 0.000 0.047 0.373 0.273 0.203 0.116 0.025 0.000 1.039 NNW 0.009 0.000 0.233 0.327 0.319 0.856 0.000 0.000 0.000 1-743 SUBTOTAI 0.187 0.607 4.482 7.470 7.087 9. 732 5.242 0.950 0.000 35.755 TOTAL HOURS OP VALID OBSERVATIONS 2142.000 TOTAL HOURS OP EKEVATED RELEASES 1953.540 TOTAI HOURS OP STABILITY CIASS E 811.230 TOTAL HOURS OF ELEVATED STABILITY CLASS E 765.870 METEOROIOGZCAL FACILITY: BROWHS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 '0 WIND DIRECTION MEASURED AT 45.67 METER LEVEL AND 89.59 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOZNT PERCEHTAG IHD SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DEITA T<~ 4 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 - JUN 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 4. 6-1. 4 1.5-3.4 3.5-5.4 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 >5524. 5 TOTAL H 0.002 0.000 0.047 0.140 0.087 0.831 0.000 0.000 0.000 1.107 HNE 0.002 0.000 0.047 0.233 0.177 0.449 0.000 0.000 0.000 0.908 HE 0.002 0.000 0.047 0.140 0.265 0.570 0.038 0.000 0.000 1.062 EHE 0.007 0.047 0.140 0.140 0.270 0.208 0.038 0.000 0.000 0.850 E 0.002 0.000 0.047 0.187 0.263 0.418 0.000 0.000 0.000 0.916 ESE 0.003 0.000 0.093 0.187 0.269 0.422 0.000 0.000 0.000 0.974 SE 0.007 0.000 0.187 0.140 0.226 0.085 0.000 0.000 0.000 0.645 SSE 0.003 0.000 0.093 0.140 0.044 0 '41 0.000 0.000 0.000 0.322 S 0.007 0.047 0.140 0.140 0.136 0.204 0.116 0.000 0.000 0.789 SSW 0.008 0.047 0.187 0.280 0.312 0.243 0.000 0.000 0.000 1.076 SW 0.003 0.000 0.093 0.093 0.046 0.085 0.000 0.000 0.000 0.320 WSW 0.000 0.000 0.000 0.140 0.000 0.043 0.000 0.000 0.000 0.183 W 0.002 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.000 0.048 WNW 0.000 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 HW 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 0.093 0.136 0.122 0.000 0.000 0.000 0.352 SUBTOTAL 0.047 0.140 1.167 2.054 2.278 3.720 0.192 0.000 0.000 9.599 TOTAL HOURS OF VALID OBSERVATIONS 2142.000 TOTAL HOURS OF ELEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS F 226 '20 TOTAL HOURS OF ELEVATED STABILITY CLASS F 205.610 METEOROLOGZCAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

R E A E E UEH IES )I STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 3.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12 5-18.4 18.5-24.4 >5524. 5 TOTAL H 0.000 0.000 0.000 0.000 0.047 0.204 0.000 0.000 0.000 0.251 HNE 0 F 000 0.000 0.000 0.047 0.273 0.204 0.000 0.000 0.000 0.523 HE 0.000 0 F 000 0.000 0.047 0.000 0.249 0.000. 0.000 0.000 0.296 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.039 0.000 0.000 0.039 E 0.000 0.000 0.000 0.000 0.043 0.043 0.000 0.000 0.000 0.087 ESE 0.000 0.000 0.000 0.047 0.000 0.000 0.000 0.000 0.000 0.047 SE 0.000 F 000 0.000 0.233 0.045 0.000 0.000 0.000 0.000 0.278 SSE 0.000 0 F 000 0.000 0.047 0.091 0.000 0.000 0.000 0.000 0.137 S 0.000 0.000 0.000 0.000 0.091 0.041 0.000 0.000 0.000 0.132 SSW 0.000 0.000 0.000 0.093 0.045 0.085 0.000 0.000 0.000 0.223 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 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 WHW 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 0.514 0.634 0.825 0.039 0.000 0.000 2.012 TOTAL HOURS OF VALZD OBSERVATIONS 2142.000 TOTAL HOURS OF EIEVATED RELEASES 1953.540 TOTAL HOURS OF STABILITY CLASS G 51.070 TOTAL HOURS OF ELEVATED STABILITY CLASS G 43.090 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89 '9 METERS WIND DIRECTIOH MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCZTY ~ 12.60 M/S DATE PRINTED: 24-JUL-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 20 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Third Quarter E1-97

SPLIT JOINT PERCENTAGE FREQUENCIES ZHD SPEED BY WIND DZRECTIOH FOR STABILITY CLASS A (DELTA T<~-1.9 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WIHD SPEED(MPH)

DZRECTZOH CAZM 0.6-2.4 1.5-3 4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18 4 18.5-24.4 24.6 TOTAL H 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 HHE 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 O.DOO 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0 000 ~ 0 000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0 F 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 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHW 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 O.ODO 0 ~ 000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF ELEVATED RElEASES 2020.180 TOTAL HOURS OF STABILITY CLASS A 28.140 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY'ROWNS PERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 45 30 AND 89.59 METERS WZHD DIRECTION MEASURED AT 45.67 METER ZEVEL WIHD SPEED MEASURED AT 45.67 METER LEVEL EPPLUENT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT 95 NOTE4 TOTALS AHD SUBTOTALS ARE OBTAINED PROM UNROUNDED NUMBERS El-98

SPLIT JOZHT PERCENTAGE FREQUENCIES IHD SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-I 9< DELTA T<~-1 7 C/100 M)

BROWHS FERRY HUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 95 SEP 30, 95 WZHD WIND SPEED(MPH)

DIRECTION CALM 0. 6-1. 4 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 H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000- 0.000 F 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 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIOHS 2172 000 F

TOTAL HOURS OF. ELEVATED RELEASES 2020 '80 TOTAL HOURS OF STABILITY CLASS B 9.520 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.000 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND DZRECTIOH MEASURED AT 45. 67 METER LEVEL WIHD SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12. 60 M/S DATE PRINTED: 27>>OCT-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAZHED FROM UHROUHDED NUMBERS Es-99

SPLIT JOIHT PERCENTAGE FREQUENCIES %WIND SPEED BY WIND DZRECTZOH FOR I

STABIIITY CLASS C {-1. < DELTA T<~-1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 95 - SEP 30, 95 WIND WZHD SPEED{MPH)

DIRECTION CALM 0.6-1.4 1 ~ 5<<3.4 3.5-5.4 5 '-7.4 7 '-12 4 12.5-18.4 18 '-24.4 24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0 F 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 EHE 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0,000 0.000 0.000 E 0.000 0 F 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 F 000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0 F 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 F 000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 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 F 000 0.000 0.000 F 000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 TOTAL HOURS OF VALZD OBSERVATIONS 2172. 000 TOTAL HOURS OF ELEVATED RELEASES 2020. 180 TOTAL HOURS OF STABILITY CLASS C 8.670 TOTAL HOURS OF .ELEVATED STABZLZTY CLASS C 0.000 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WZHD DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12. 60 M/S DATE PRZNTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES )fZHD SPEED BY WIND DZRECTZOH FOR STABILZTY CLASS D (-1 5< DELTA T<~-0.5 C/100 M)

BROWNS PERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.001 0.046 0.092 0.368 1.612 1.552 1.058 0.000 0.000 4.730 HHE 0.000 0.000 0.000 0.691 0.891 1.654 0.721 0.029 0.000 3.985 HE 0.001 0.000 0.092 0.460 0.307 0.562 0.076 0.000 0.000 1.498 EHE 0.002 0.000 0.184 0.276 0.493 0.539 0.000 0.000 0.000 1.494 E 0.001 0.000 0.138 0.276 0 398 0.288 0.038 0.000 0.000 1.140 ESE 0.002 0.000 0.230 0.230 0.267 1.014 0.452 0.000 0.000 2.196 SE 0.006 0.000 0.599 1.565 1.504 1.455 0.786 0 '06 0.000 6.121 SSE 0.006 0.046 0.506 0.829 0.844 1.446 1.575 0.337 0.000 5.590 S 0.006 0.000 0.552 0.967 0.540 0.731 0.412 0.120 0.000 3.327 SSW 0.006 0.000 0.599 0.875 0.349 0.363 0.302 0.093 0.000 2.585 SW 0.007 0.000 0.645 0.737 0.445 0.207 0.076 0.000 0.000 2.116 WSW 0.002 0.046 0.184 0.737 0.671 0.326 0.000 0.000 0.000 1.967 0.001 0.000 0.138 1.105 1.791 1.120 0.000 0.000 0.000 4.155 WHW 0.001 0.000 0.092 0.599 1.108 0.819 0.037 0.000 0.000 2.656 HW 0.000 0.000 0.046 0.414 1.808 1.880 0.190 0.000 0.000 4.339 NNW 0.001 0.000 0 ~ 138 0.414 0.755 0.453 0.151 0.000 0.000 1.912 SUBTOTAL 0.046 0.138 4.236 10.543 13.782 14.408 5.873 0.785 0.000 49.811 TOTAL HOURS OP VALID OBSERVATIONS 2172.000 TOTAL HOURS OF ELEVATED RELEASES 2020.180 TOTAL HOURS OP STABILITY CLASS D 1126.640 TOTAL HOURS OP ELEVATED STABILITY CLASS D 1081.890 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND DIRECTIOH MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EPPLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS

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

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1 ~ 95 SEP 30 '5 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12 4 12 '-18 ' 18 5-24 4 >a24,5 TOTAL H 0.025 0.000 0.322 0.460 0.837 1.645 0.038 0.000 0.000 3.329 HHE 0.014 0.000 0.184 0.414 0.926 0.974 0.302 0.014 0.000 2.829 HE 0.039 0.184 0.322 0.506 0.486 0.774 0.076 0.000 0.000 2.388 EHE 0.025 0 '46 0.276 0.645 0.395 0.407 0.000 F 000 0.000 1.793 E 0.021 0.092 0.184 0.645 0.445 1.096 0.038 0.000 0.000 2.521 ESE 0.032 0.046 0.368 0.921 0.879 1.445 0.000 0.000 0.000 3.691 SE 0.050 0.230 0 '14 0.599 0.803 0.788 0.151 0.000 0 F 000 3.035 SSE 0.042 0.000 0.552 ~ ~ 0.829 0.583 0.240 0.113 0.000 0.000 2.361 S 0.025 0.046 0.276 0.737 0.267 0.163 0.000 0.036 0.000 1.551 SSW 0.02$ 0.046 0.322 0.276 0.087 0.080 0.113 0.000 0.000 0.953 SW 0.004 0.000 0.046 0.322 0.181 0.122 0.000 0.000 0.000 0.675 WSW 0.018 0.092 0 '38 0.092 0.087 0.166 0.000 0.000 0.000 0.594, W 0.025 0.092 F 230 0.276 0.090 0.120 0.037 F 000 0.000 0.871 WNW 0.039 0.046 0.460 0.230 0.136 0.085 0.074 0.000 0.000 1.070 HW 0.007 0.000 0.092 0 '14 0.401 0.163 0 '38 0.000 0.000 1 ~ 116 NNW 0.021 0.138 0.138 0.460 0.879 0.689 0.186 0.000 0.000 2.512 SUBTOTAL 0.414 1. 059 4 '28 7.827 7.484 8.958 1.167 0.050 0.000 31.2$ 7 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF ELEVATED RELEASES 2020.180 TOTAL HOURS OF STABILITY CLASS E 713.070 TOTAL HOURS OF EIEVATED STABZLZTY CZASS E 679.550 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 '0 WIND DIRECTION MEASURED AT 45.67 METER LEVEL AHD 89.59 METERS WIND SPEED MEASURED AT 45 67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-102

SPLIT JOINT PERCENTAGE FREQUENCIES ZHD SPEED Y WIND DZ STABILITY CLASS F ( 1 ~ 54 DELTA T<~ 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 95 - SEP 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5 '-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.276 0.311 0.452 0.000 0.000 0.000 1.039 HHE 0 '10 0.000 0.046 0.138 0.262 1.764 0.762 0.114 0.114 0.000 0.000 0.000 0.000 2.335 1.932 HE 0.020 0.000 0.092 0.414 0.529 EHE 0.010 0.000 0.046 0.276 0.354 0.574 0.076 0.000 0.000 1.337 E 0.010 0.000 0.046 0.184 0.264 0.732 0.191 0.000 0.000 1.427 ESE 0.010 0.000 0.046 0.046 0.265 0.372 0.000 0.000 0". 000 0.740 SE 0.010 0.000 0.046 0.046 0.182 0.041 0 F 000 0.000 0.000 0.325 SSE 0.031 0.046 0.092 0.000 0.043 0.000 0.000 0.000 0.000 0.212 S 0.010 0.046 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.056 SSW 0.010 0.000 0.046 0.046 0.000 0.000 0.000 0.000 0.000 0.102 SW 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0 F 000 WSW 0.010 0.046 0.000 0.000 0.000 0.042 0.000 0.000 F 000 0.099 W 0.010 0.000 0.046 0.000 0.000 0.000 0.000 F 000 0.000 0.056 WNW 0.020 0.000 0.092 0.000 0.000 0.000 0.000 0.000 0.000 0.113 HW 0.010 0.000 0 '46 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.056 NNW 0.010 0.000 0.046 0.092 0.091 0.123 0.362 SUBTOTAL 0.184 0.138 0.691 1.519 2.301 4.863 0.495 0.000 0.000 10 '91 TOTAL HOURS OF VALID OBSERVATIONS 2172.000 TOTAL HOURS OF ELEVATED RELEASES 2020.180 TOTAL HOURS OF STABILITY CLASS F 241.410 TOTAL HOURS OF ELEVATED STABILITY CLASS F 221.350 METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AND 89.59 METERS WIND DZRECTZOH MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEZ EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 27-OCT-95 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-103

0 SPLIT JOINT PERCENTAGE FREQUENCIES BLIND SPEED BY WIND DZRECTZON FOR STABZLITY CLASS G {DELTA T > 4 ~ 0 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE JUL 1, 95 SEP 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 HHE 0.000 0.000 0.000 0.000 0.087 0.324 0.000 F 000 0.000 0.412 HE 0.000 0.046 0.046 0.138 0.088 0.439 0.191 0.000 0.000 0.949 EHE 0.000 0.000 0.000 0.000 0.177 0.000 0.000 0.000 0.000 0.177 E 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 F 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 F 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 F 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 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.046 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 SUBTOTAL 0.000 0.092 0.138 0.184 0.353 0 '63 0.191 0.000 0.000 1 ~ 721 TOTAL HOURS OF VALID OBSERVATIONS 2172. 000 TOTAL HOURS OF ELEVATED RELEASES 2020.180 TOTAL HOURS OF STABILITY CLASS G 44.550 TOTAL HOURS OF ELEVATED STABILITY CLASS G 37.390 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEH 45.30 AHD 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45 '7 EFFLUEHT VELOCITY ~ 12.60 M/S METER LEVEL DATE PRINTED: 27-OCT-95 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 21 Joint Frequency Distribution in Percent for Split Level Releases Elevated Level Portion Fourth Quarter El-105

SPLIT JOINT PERCENTAGE FREQUENCIES WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A {DE rA TC -1.9 C/100 M)

BROWNS FERRY HUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WIND SPEED(MPH)

DIRECTZOH CALM 0 6-1.4 1.5-3.4 3.5-5 ~ 4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 34.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0 ~ 000 0 000 0.000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000, . 0.000 o.oao 0.000 0.000 0.000 0.000 0.000 S 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0:000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0. 000.

~

0.000 0.000 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID OBSERVATIONS 2161.000 TOTAI HOURS OF ELEVATED RELEASES 1905.550 TOTAL HOURS OF STABILZTY CLASS A 9.910 TOTAL HOURS OF ELEVATED STABILITY CLASS A 0.000 METEOROLOGICAL FACILITY! BROWNS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEH 45 30 AHD 89.59 METERS WIND DIRECTION MEASURED AT 45.67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-106

SPLIT JOINT PERCEHTAGE FREOUEHCIES WIND SPEED BY WIND DIRECTION POR STABILITY CLASS B (-I ~ 9< DELTA T<a-1.7 C/100 M)

BROWHS PERRY NUCLEAR PLANT PART 2 OP 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WIND SPEED{MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4, >a24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 F 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 F 000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 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 F 000 0.037 0.000 0.000 0.037 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.037 0.000 F 000 0.037 TOTAL HOURS OP VALZD OBSERVATIONS 2161.000 TOTAL HOURS OP ELEVATED RELEASES 1905.550 TOTAL HOURS OP STABILITY CLASS B 9.830 TOTAL HOURS OF ELEVATED STABILITY CLASS B 0.810 METEOROIOGICAL PACZLZTY: BROWNS PERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 30 AHD 89.59 METERS WIND DIRECTZOH MEASURED AT 45.67 METER LEVEL WZHD SPEED MEASURED AT 45.67 METER LEVEL EPPIUEHT VELOCITY a 12.60 M/S DATE PRZHTED: 24-JAH-96 HOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED PROM UNROUNDED NUMBERS E1-107

I H PER EHTAG FRE UEHCIES I STABILITY CLASS C (-1.7< DELTA T<~-1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WZHD SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7 ' 7.5-12.4 12 5-18.4 18.5-24.4 >~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 llHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 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 0.046 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.139 0.092 0.000 0.000 0.000 0.000 0.231 SSE 0.000 0.000 0.000 0.. 000 F 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 0.046 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 0.079 0.000 0.000 0.000 0.079 W 0.000 0.000 0.000 0.000 0.000 0.083 0.037 0.000 0.000 0.120 WNW 0.000 0.000 0.000 0.000 0.000 0 F 000 0;000 0.028 0.000 0.028 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NHW 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.139 0.184 0.162 0.037 0.028 0.000 0. 550 TOTAL HOURS OF VALID OBSERVATIONS 2161.000 TOTAL HOURS OF ELEVATED RELEASES 1905.550 TOTAL HOURS OF STABILITY CLASS C 24.890 TOTAL HOURS OF ELEVATED STABZZ ZTY CLASS C 11.890 METEOROLOOICAL FACILITY BROWHS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIHD DIRECTZOH MEASURED AT 45.67 METER LEVEL WZHD SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12 '0 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-108

SPLIT JOINT PERCENTAGE FR ZHD SPEED BY WIND DIRECTION FOR STABILITY CLASS D {-1. 5< DELTA T<~-0. 5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WZHD WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.001 0.000 0.093 0.185 0.347 2.703 1.482 0.140 0.000 4.951 NNE 0.003 0.139 0.139 0.278 0.349 1.454 1.618 0.043 0.003 4.026 NE 0.002 0.046 0.093 0.139 0.177 1.039 0.458 0.037 0.000 1.989 EHE 0.001 0.000 0.093 0.139 0.000 0.445 0.000 0.000 0.000 0.678.

E 0.005 0.000 0.463 0.093 0.044 0.166 0.038 0.000 0.000 0.809 ESE 0.005 0.000 0.416 1 018 1.075 0.856 0.038 0.000 0.000 3.408 SE F 011 0.093 0.879 1.388 0.713 1.381 0.756 0.096 0.000 5.316 SSE 0.005 0.000 0.463 0.602 0.446 1.427 1.048 . 0.240 0.022 4.252 S 0.003 0.046 0.185 0.416 0.218 0.802 1.015 0.329 0.036 3.050 SSW 0.003 0.000 0.278 0.648 0.355 0.566 0.380 0.086 0.012 2.328 SW 0.002 0.003 0.000 0.000 0.139 0.509 0.358 0.161 0.038 0 '32 0.000. 1.238 WSW 0.231 0.324 0.269 0.730 0.150 0.089 0.000 1.796 W 0.002 0.000 0.139 0 '85 0.356 0.802 0.526 0.027 0.000 2.037 WHW 0.001 0.000 0.046 0 F 231 0.354 0.657 0.414 0.300 0.012 2.017 NW 0.002 0.046 0.093 0.370 0.488 1.772 1. 667 0.203 0.011 4.652 NNW 0.002 0.046 0.093 0.046 0.353 2.063 2.327 0.099 0.000 5.029 SUBTOTAL 0.046 0.416 3.841 6.571 5.903 17.025 11.957 1.720 0.096 47.574 TOTAL HOURS OF VALZD OBSERVATIOHS 2161.000 TOTAL HOURS OF ELEVATED RELEASES 1905.550 TOTAL HOURS OF STABILITY CLASS D 1113.390 TOTAL HOURS OF ELEVATED STABZLZTY CLASS D 1028.080 METEOROLOGICAL FACZLZTY: BROWHS FERRY HUCZEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND DIRECTION MEASURED AT 45+67 METER LEVEL WIHD SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCITY ~ 12.60 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS E1-109

SPLZT JOINT PERCENTAGE FREQUENCIES ZHD SPEED BY WIND DZRECTZOH F R STABILITY CLASS E {-0.5< DELTA T<~ 1.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WZHD SPEED(MPH)

DZRECTIOH CALM 0.6-1.4 3.5-3.4 3.5-5.4 5~5 2.4- 7.5-12.4 12.5-18.4 18.5-24.4 24.5 TOTAL H 0.000 0.000 0 231 0.463 0 ~ 352 0.980 0.113 0.000 0.000 2.139 HHE 0.000 0.000 0.139 0.370 0.491 0.896 0.038 0.000 0.000 1 '34 NE 0.000 0.000 0.185 0.555 0.177 0.683 0.268 0.000 0.000 1.868 ENE 0.000 0.046 0.231 0 '78 0.266 0.491 0.000 0.000 F 000 1.312 E 0.000 0.000 0.046 0.555 0.577 0.419 0.000 0.000 0.000 1.597 ESE F 000 0.046 0.093 0.416 1.419 1.674 0.038 0.000 0.000 3.686 SE 0.000 0.000 0.278 0.509 0 '35 1.338 0.416 0 '17 0.000 3.593 SSE 0.000 0.000 0.231 '0.185 . 1.056 2.076 1.360 0.303 0.004 5 215 S 0.000 0 '39 '.093 0.093 0.221 1.093 0.674 0.151 0.000 2.462 SSW 0 F 000 0.000 0.093 0.093 0.181 0.039 0.152 0.000 0.000 0.558 SW 0.000 0.046 0.185 0.185 0.087 0.043 0.153 0.000 0.000 0.700 WSW 0.000 0.000 0.139 0.370 0.091 0.086 0.037 0.000 0.000 0.723 W 0 F 000 0.000 0.000 0.000 0.093 0 '85 0.046 0.164 0.000 0.000 0.000 0.488 WNW 0.046 0.185 0.087 0.083 0.000 0.000 0.000 0.401 HW 0.000 0.046 0.093 0.093 0.218 0.771 0.534 0.000 0.004 1.759 NNW 0.000 0.000 0.185 0.139 0.090 0.889 0.458 0.000 0.000 1.761 SUBTOTAL 0.000 0.324 2.360 4.674 6.292 11.724 4.242 0.571 0.008 30.195 TOTAI HOURS OF VALID OBSERVATIONS 2161.000 TOTAL HOURS OF ELEVATED REIEASES 1905.550 TOTAL HOURS OF STABILITY CLASS E 742.360 TOTAL HOURS OF ELEVATED STABILZTY CLASS E 652.520 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLITY BASED OH DELTA-T BETWEEH 45 30 AHD 89 59 METERS WIND DIRECTZOH MEASURED AT 45-67 METER LEVEL WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCZTY ~ 12.60 M/S DATE PRZNTED: 24-JAN-96 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-110

SPLIT JOZHT PERCENTAGE FREQUENCIES ZHD SPEED BY WIND DZRECTZOH FOR STABILITY CLASS F 1.5< DELTA T <55 4.0 C/100 M)

BROWNS FERRY NUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1, 95 DEC 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18 5-24.4 >5524. 5 TOTAL H 0.000 0.000 0.000 0.139 0.091 0.203 0.077 0.000 0.000 0.510 HNE 0.000 0.000 0.000 0.093 0.177 0.243 0.000 0.000 0.000 0.513 HE 0 F 000 0.000 0.093 0 F 278 0.271 0.199 0 038 0.000 0.000 0.879 ENE 0.000 0.000 0.000 0.000 0.356 0.166 0 0.000 0.000 0.560 E 0.000 0.000 0.046 0.046 0.134 0.415 '38'.000 0.000 0.000 641 ESE 0.000 0.000 0 000 0.093 0 '46 0. 131 0.457 0.000 0.000 0.000 0

0.727 SE 0.000 0.093 0.231 0.488 0.042 0.000 0.000 0 000 0.854 SSE 0.000 0.000 0.000 0.139 0 ..135 0.325 0.000 0.000 0.000 0.599 S 0.000 0.000 0.000 0.046 0 '46 0.135 0.161 0.000 0.000 0.000 0.389 SSW 0.000 0.000 0.093 0.093 0.000 0.000 0.000 0.000 0.185 SW 0 F 000 0.000 0.093 0.046 0.000 0.000 0.000 0.000 0.000 0.139 WSW 0.000 0.000 0.000 0.093 0 '46 0.000 0.000 0.000 0.000 0.000 0.139 W 0.000 0.000 0.046 0.000 0.000 0.000 0.000 F 000 0.046 WHW 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.000 0.046 HW 0.000 0 F 000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.046 NNW 0.000 0.000 0.046 0.000 0.046 0 F 201 0.038 0 000 0.000 0.331 SUBTOTAL 0.000 0.000 0.648 1.249 2.104 2.412 0.192 0.000 0.000 6.605 TOTAL HOURS OF VALID OBSERVATIONS 2161. 000 TOTAL HOURS OF ELEVATED RELEASES 1905.550 TOTAL HOURS OF STABILITY CLASS F 173.060 TOTAI HOURS OF ELEVATED STABILITY CLASS F 142.730 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEH 45.30 AHD 89 WIND DIRECTZOH MEASURED AT 45 '7 METER LEVEL

'9 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUENT VELOCITY ~ 12.60 M/S DATE PRZNTED: 24-JAN-96 NOTE; TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

SPLIT JOINT PERCENTAGE FREQUENCIES 'WZHD SPEED BY WIND DIRECTION FOR STABILITY CLASS G { DELTA T > 4. 0 C/100 M)

BROWHS FERRY HUCLEAR PLANT PART 2 OF 2 ELEVATED RELEASE MODE OCT 1 ~ 95 DEC 31 ~ 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0 '-1 ' 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 H 0 000 0.000 0.000 0.093 0.045 0.042 0.000 0.000 0.000 0 '79 NHE 0.000 0.000 0.000 0.000 0.087 0.525 0.115 0.000 0.000 0.727 NE 0.000 0.000 0.000 0.093 0.000 0.042 0.000 0.000 0.000 0.134 EHE 0.000 0.000 0 '93 0.093 0 F 000 0.122 0 '15 0.000 0.000 0.422 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 0.185 0.093 F 000 0.000 0.000 0.000 0.000 0.278 SE 0.000 0.000 0.139 0.463 0.046 0.000 0.000 0.000 0.000 0 '48 SSE 0.000 0.000 0.000

'39 0.000 0.139 0 '92 0.000 0.000 0.000 0.000 0.231 S 0 0.046 0.093 0.000 0.000 0.000 0.000 0.000 0.278 SSW 0.000 0.000 0.185 0.046 0.000 0.000 0.000 0.000 0.000 0.231 SW 0.000 0.000 0.000 0.000 0.043 0.000 0.000 0.000 0.000 0 '43 WSW 0.000 0.046 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 W 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 HHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.185 0.648 0.313 0 ~ 731 0.230 0.000 0.000 3.217 TOTAL HOURS OF VALID OBSERVATZOHS 2161.000 TOTAL HOURS OF ELEVATED RELEASES 1905.550 TOTAL HOURS OF STABILITY CLASS G 87.560 TOTAL HOURS OF ELEVATED STABILITY CLASS G 69.520 METEOROLOGICAL FACZLZTY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 45 30 AHD 89 WIND DZRECTIOH MEASURED AT 45.67 METER LEVEL

'9 METERS WIND SPEED MEASURED AT 45.67 METER LEVEL EFFLUEHT VELOCZT'I ~ 12.60 M/S DATE PRINTED: 24-JAH-96 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-112

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 22 Joint Frequency Distribution in Percent for Stack Releases First Quarter E1>>113

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

BROWHS FERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0. 6-1. ~ 1.5-3.4 3 '-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 F 000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0 F 000, . 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 O. l) 00- 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 F 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 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALZD STABILITY OBSERVATIONS 2147 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VAI ZD WZHD DIRECTION-WZHD SPEED-STABII ITY CLASS A 0 TOTAL HOURS OF VALID WZHD DZRECTZOH-WZHD SPEED-STABILITY OBSERVATZONS 2042 TOTAI HOURS CALM 0 METEOROLOGZCAL FACIIZTY: BROWHS FERRY NUCLEAR PLANT STABZLITY BASED OH DELTA-T BETWEEN 45 30 AHD 89.59 METERS WIND SPEED AHD DZRECTION MEASURED AT 92.63 METER LEVEL DATE PRZHTED: 26-APR-95 MEAN WIND SPEED ~ 0 00 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCEHTAOE FREQUENCIES O~HD SPEED BY WIND DZRECTION FOR STABILITY CLASS B (-I ~ 9< DELTA T<~-1 7 C/100 M)

BROWHS FERRY HUCZ EAR PLANT JAN 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3 ~ ~ 3.5-5.4 5.5-7.4 7.5-12 ' 12.5-18.4 18.5-24.4 >>24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0 000 0 F 000 0.000 0 000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0 F 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 F 000 0.000 0.000 SE 0 000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0 F 000 0.000 0.000 0 000 0.000 0 F 000 0.000 0.000 S 0.000 0.000 0.000 0 000 0.000 0.000 0 F 000 0.000 0.000 0.000 SSW 0.000 0 F 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 WHW 0.000 0:000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHW 0 000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 o.ooo SUBTOTAL 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABZLZTY OBSERVATIONS 2147 TOTAL HOURS OF STABZLZTY CLASS B 0 TOTAL HOURS OF VALID WIND DZRECTZOH-WIHD SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABZZ ITY OBSERVATIONS 2042 TOTAL HOURS CAl M 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 45 30 AHD 89.59 METERS WIND SPEED AHD DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED- 26-APR-95 MEAN WZHD SPEED ~ 0.00 HOTE: TOTALS AHD SUBTOTALS ARE OBThZNED FROM UHROUHDED NUMBERS

JOZHT PERCEHTAQE FREQUENCIES 0 SiD DIRECTION POR STABIZ ITY CLASS C (-1 74. DELTA TC~-1.5 C/100 M)

BROWNS PERRY HUCLSAR PLANT JAH 1, 95 MAR 31, 95 WZHD WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3 4 3.5-5.4 5.5-3. ~ 7 5-12.4 12.5-18.4 18-5-24.4 >~24.5 TOTAL N 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NHE o.ooo D.ooo D.ooo 0.000 0.000 0.000 0.000 0,049 0.000 0.049 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000 O.ODO 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 F 000 0 F 000 0 000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0 000 0.000 O.DOO 0.000 0.000 SSE 0.000 0.000 0.049 0. 04,9 0.000 0.000 0.000 0.000 0.000 0.098 S 0.000 0.000 0.000 0.000 0.000 D.ooo 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 O.DOD 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 D.ooo W 0.000 0.000 0.000 0 F 000 0 000 0 098 0.049 0.000 0 000 0.147 WHW 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 NHW 0 000 0.000 0.000 0.000 0 000 0.000 O.DOO 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.049 0.049 0.000 0.098 0.049 0.049 0.000 0.294 TOTAL HOURS OF VALID STABZZZTY OBSERVATIONS 2147 TOTAL HOURS OP STABZLZTY CLASS C 6 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS C 6 TOTAL HOURS OP VAZZD WIHD DIRECTION-WIND SPEED-STABILZTY OBSERVATIONS 2042 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY BROWHS PERRY HUCLSAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45. 30 AHD 89. 59 METERS WIND SPESD AND DZRECTIOH MEASURED AT 92 63 METER LEVEZ DATE PRINTED: 26-APR-95 MEAH WZHD SPEED ~ ll 63 NOTE TOTALS AHD SUBTOTALS ARS OBTAINED FROM UNROUNDED NUMBERS

JOZHT PERCENTAGE FREQUENCIES 0 SD SPEED BY WIHD DIRECTION FOR STABILITY CLASS D (-I 5< DELTA T<~-0.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND W1HD SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18 4 18.5-24.4 54.5 TOTAL H 0.000 0.000 0.294 0.343 0.343 2.449 3.134 1.567 0.441 8.570 HHE 0.000 05000 0.049 0.343 0.588 3.428 2 498 0 '90 0 000 7.395 HE 0.000 0.000 0.147 0.294 0.245 1.469 0.735 0 '49 0.000 2.938 EllE F 000 0.049 0.049 0.098 0.196 0.294 0.000 0.000 F 000 0.686 E 0.000 0.000 0.000 0.147 0.343 0 000 0.000 0.000 0.637 ESE 0.000 0.000 0 '49 0.294 0.294 0.539 0-147'.490 0.049 0.000 1.714 SE 0.000 0.000 0.343 0.147 0.735 0.392 0.784 0.637 0.147 3.183 SSE 0.000 0.000 0.049 0.392 0.147 0.539 1 126 0.392 0.343 2.987 S 0.000 0.049 0.000 0.343 0.245 1.028 0.637 0.098 0 049 2.449 SSW 0.000 0.049 0.196 0.196 0.049 0.735 0.735 0.686 0.147 2.791 SW 0.000 0.000 0.147 0.196 0.245 0.147 0.539 0.245 0.049 1 567 WSW 0.000 0.000 0.147 0.245 0.245 0.392 0.637 0.490 0.294 2.449 W 0.000 0.000 0.147 0.490 0.294 0.686 0.735 0.539 0 490 3.379 WHW 0.000 0:000 0.049 0.294 0.539 0.833 1.322 1.322 0.735 5.093 HW 0.000 0.000 0 000 0.098 0.343 1.077 2.644 1.273 0.588 6 '24 HHW 0;000 0.000 0.049 0.098 0.343 2.106 2.498 0.588 0.147 5.828 SUBTOTAL 0.000 0.147 1.714 4.016 5.191 16.112 18.658 8.423 3.428 57.689 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2147 TOTAL HOURS OF STABILITY CLASS D 1250 TOTAL HOURS OF VALID WZHD DZRECTZOH-WIND SPEED-STABILZTY CLASS D 11'78 TOTAL HOURS OF VALID WIND DZRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2042 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILZTY BASED OH DELTA-T BETWEEH 45 30 AHD 89 WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL

'9 METERS DATE PRINTED! 26-APR 95 MEAN WIND SPEED 55 13 15 NOTE< TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES 0 D SPEED BY WZHD DIRECTION FOR STABILITY CLASS E (-0.5< DELTA TC 1.5 C/100 M)

BROWHS FERRY HUCLEAR PLANT JAN 1, 95 MAR 31, 95 WIHD WIND SPEED(MPH)

DIRECTZOH 5.6-3.4 1.5-3.4 3.5 5.4 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 >=24.5 TOTAL H 0.000 0.000 0 ~ 000 0.000 0.098 0.588 0.735 0.147 0.000 1.567 HHE 0.000 0.000 0.049 0.147 0.000 1.175 0.686 0.294 0.000 2.351 NE 0.000 0.000 0.000 0.245 0.196 0 637 0.490 0.147 0.000 1.714 ENE 0 ~ 000 0.000 0.049 0.098 0.147 0.245 0.294 0.049 0.000 0.881 E 0.000 0.000 0.000 0.049 0.196 0,392 0.392'.833 0.049 0.000 1.077 ESE o.oao o.aoa 0 049 0.000 0 ~ 000 0 ~ 196 0.147 0.000 1.224 SE 0 ~ 000 0.000 0.098 0.049 0.196 0.930 1.273 1 ~ 175 1.224 4.946 SSE 0.000 0.049 0.098 0.098 0.196 0.881 2.302 1 '12 0.539 5.975 S 0.000 0.000 0 098 0 ~ 098 0.147 1.175 1.469 1.126 0.147 4.261 SSW 0.000 0.000 0.000 0.049 0.196 0.686 0.784 0.098 0.000 1.812 SW 0.000 0.000 0.000 0.049 0.098 0.784 0.833 0.049 0.098 1.910 WSW 0.000 0.000 0.000 0.049 0 049 0.294 0.686 0.147 0.049 1.273 W 0.000 0.000 0.049 0.147 0.147 0 ~ 196 0.833 0 343 0.000 1.714 WHW a.oaa a:ooo 0.098 0. 343 0.147 0.147 0.294 0.147 0.000 1.175 HW 0.000 0.000 0.000 0.098 0.147 04392 0.637 0.245 0.098 1.616 HHW 0.000 0 ~ 000 0.049 0.196 0.147 0.539 0.784 0 '45 0.000 1.959 SUBTOTAL 0.000 0.049 0.637 1.714 2. 106 9 256 13.320 6.219 2.155 35.455 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2147 TOTAL HOURS OF STABILITY CLASS E 757 TOTAL BOURS OF VALID WIND DIRECTZOH-WZHD SPEED-STABILITY CLASS E 724 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABZLZTY OBSERVATIONS 2042 TOTAL HOURS CALM 0 METEOROLOOICAL FACZIZTY: BROWNS FERRY NUCLEAR PLAllT STABILITY BASED ON DELTA-T BETWEEN 45 30 AHD 89 59 llETERS

'MIND SPEED AHD DIRECTIOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 26-APR-95 MEAH WIND SPEED ~ 14.07 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS El-118

JOINT PERCENTAGE FREQUENCIES OF ZHD SPESD BT WIND DZRECTZOH P'OR STABZLZTT CLASS t ( 1.5< DSLTA T<m 4.0 C/100 M}

BROWHS tERRY NUCLEAR PLANT JAH 1, 95 MAR 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1 '-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 H 0.000 0.000 0.000 0.098 0.000 0.000 0.000 F 000 0.000 0.098 HHE 0.000 0.000 0.000 0.049 0.000 0.098 0.147 0.000 0.000 0.294 HE 0.000 0.000 0 000 0.000 0 098 0.147 0.000 F 000 0.000 0.245 EHE 0.000 0 000 0.000 0.000 0.000 0.098 0. 147. 0.000 0.000 0.245 S 0.000 0.000 0.000 0.000 0.098 0.098 0.098 0.000 0.000 0.294 ESE 0.000 0.000 0.000 0.049 0.000 0.294 0.147 0.147 0.000 0.637 SE 0.000 0.000 0.000 0.000 0.000 0.441 0.490 0.000 0.000 0.930 SSE 0 000 0.000 0.000 0.000 0.098 0.392 0.392 0.049 0.000 0.930 S 0.000 0.000 0.000 0.000 0.147 0.245 0.343 0.000 0.000 0.735 SSW 0.000 0.000 0.000 0.000 0.000 0 ~ 196 0.245 0.049 0.000 0.490 SW 0.000 0.000 0.000 0.049 0.000 0.098 0.441 0.000 0.000 0.588 WSW 0.000 0.000 0.000 0.000 0.049 0.147 0.049 0.000 0.000 0.245 W 0.000 0 000 0 000 0.000 0.000 0.049 0.049 0.000 0.000 0.098 WHW 0.000 0'000 0 000 0.049 0.000 0.000 0.000 0.000 0.000 0.049 HW 0.000 0.000 0.098 0.049 0.000 0.000 0.000 0.000 0.000 0.147 HHW 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 0.098 0.343 0.490 2 '02 2.547 0.245 0.000 6.024 TOTAL HOURS OP VALID STABILITY OBSERVATZOHS 2147 TOTAL HOURS OP STABILITY CLASS P 123 TOTAL HOURS Ot VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS F 123 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY OBSERVATIONS 2042 TOTAL HOURS CALM 0 METEOROLOGICAL PACZLITY: BROWHS PERRY NUCLEAR PLANT STABZLITT BASED OH DELTA-T BSTWEEH 45 30 AHD 89.59 METERS WIND SPESD AHD DIRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRZHTED: 26-APR-95 MEAN WIND SPEED ~ 11.92 HOTE: TOTALS AHD SUBTOTALS ARE OBTAZHSD PROM UNROUNDED NUMBERS El-119

JOINT PERCENTAGE FREQUENCIES OF~i.HD SPEED BY WZHD DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLANT JAH 1 ~ 95 MAR 31 c 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6 1.4 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 H 0.000 0.000 0.000 0.000 0.000 0.000 0 ~ 000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 HE 0 000 0.000 0.000 0.000 0.000 0.049 0.049 0.000 0 ~ 000 0.098 EHE 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 0.098 0.000 0.000 0 ~ 000 0.098 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 O.ooo 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.147 0.196 0.000 0.000 0.343 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 '.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 WHW 0.000 0;000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.294 0.245 0.000 0.000 0.539 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2147 TOTAL HOURS OF STABILITY CLASS G 11 TOTAL HOURS OF VALID WIND DIRECTIOH-WIND SPEED-STABILITY CLASS G 11 TOTAL HOURS OF VALID WIND DZRECTZOH-WZHD SPEED-STABZLZTY OBSERVATIONS 2042 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AND DIRECTIOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 26-APR-95 MEAH WIHD SPEED ~ 12.84 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS E1-120

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 23 Joint Frequency Distribution in Percent for Stack Releases Second Quarter El-121

JOINT PERCENTAGE FREQUENCIES OF HD SPEED BY WIND DIRECTION FOR STABILZTY CLASS A (DELTA T<~-1. 9 C/100 M)

BROWNS FERRY NUCLEAR PLAHT APR 1 ~ 95 JUH 30 ~ 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5 '-7.4 7.5-12.4 12.5-18.4 18.5-24.4 )~24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0 F 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 F 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 F 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 HNW 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIHD DIRECTION-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIHD SPEED AHD DIRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRZHTED: 24-JUL-95 MEAN WIND SPEED ~ 0.00 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-122

JOZHT PERCENTAGE FREQUENCIES OF D SPEED BY WIND DIRECTIOH FOR STABILITY CLASS B (-1.9( DELTA TCm-I 7 C/100 M)

BROWHS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-3. ~ 7.5-12.4 12.5-18.4 18.5-24.4 34. 5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 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. 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 000'.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 F 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 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALID STABZLZTY OBSERVATZOHS 2159 TOTAL HOURS OF STABILITY CLASS B 0 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY CLASS B 0 TOTAL HOURS OF VALID WZHD DZRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2144 TOTAL HOURS CALM 0 METEOROLOQZCAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AHD DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRIHTED: 24-JUL-95 MEAN WIND SPEED ~ 0.00 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-123

JOINT PERCENTAGE FREQUENCIES OF i

AD SPEED BY WZHD DIRECTION FOR STABILITY CIASS C (-1.7< DELTA T<~-1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT APR 1, 95 << JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >a24.5 TOTAL H 0.000 0.000 0 F 000 0.000 .000 0.000 0.000 0.000 0.000 0. 000 NNE 0.000 0.000 0.000 0.000 .000 0 F 000 0.000 0.000 0.000 0. 000 HE 0 F 000 0.000 0 F 000 0.000 .000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0 F 000 .000 0.000 0.000, 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 .000 0.000 0.000 0 F 000 0.000 0.000 SSE 0.000 0.000 0.000, , 0.000 .000 0 F 000 0.000 0.000 0.000 0.000 S 0.000 0.000 0 ~ 0 00r 0.000 .000 0.000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 .000 0.000 0.000 F 000 0.000 0.000 SW 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 WNW 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 NW 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 NHW 0.000 0.000 0.000 0.000 .000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS C 0 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY CLASS C 0 TOTAL HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89 59 METERS WIND SPEED AHD DIRECTION MEASURED AT 92.63 METER ZEVEL DATE PRIHTED: 24-JUL-95 MEAN WIND SPEED m 0 ~ 00 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-124

e JOINT PERCENTAGE FREQUENCIES OF D SPEED BY WZND DIRECTION FOR STABILITY CLASS D {-1 '< DEITA T<~-0.5 C/100 M)

BROWHS FERRY HUCIEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED(MPH)

DIRECTZOH CALM 0.6-1.4 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 H 0.003 0.000 0.093 0.047 0.233 1.632 1.119 0.000 0.000 3.128 HHE 0.001 0.000 0.047 0.373 0.420 0.746 0.466 0.000 0.000 2.054 HE 0.000 0.000 0.000 0.280 0.187 0.840 0.187 F 000 0.000 1.493 EHE 0.004 0.000 0.140 0.233 0.093 0.373 0.047 0.000 0.000 0.890 E 0.006 0.047 0.187 0.140 0.000 0.140 0.047 0.000 0.000 0.566 ESE 0.003 0.000 0.093 0.513 0.513 0.606 0.000 0.000 0.000 1.728 SE 0.013 0.000 0.466 0.606 0.326 1.026 0.233 0.140 0.140 2.951 SSE 0.012 0.047 0.373 0.373 0.373 0.793 0.466 0.233 0.047 2.717 S 0.012 0.000 0.420 0.326 0.746 2.099 1.353 0.606 0.326 5.889 SSW 0.004 0.000 0.140 0.840 0.326 1.353 1.772 1.166 0.373 5.974 SW 0.014 0.047 0.466 0.373 0.653 1.306 1.259 0.000 0.000 4.119 WSW 0.005 0.000 0.187 0.700 0.560 0.840 0.466 0.420 0.000 3.177 W 0.006 0.000 0.233 0.653 0.700 0.746 0.233 0.047 0.140 2.758 WNW 0.003 0.000 0.093 0.466 0.886 1.493 0.606 0.187 0.093 3.827 HW 0.003 0.000 0.093 0.140 0.513 1.632 1.026 0.653 0.093 4.154 NNW 0.005 0.000 0 '87 0.233 0.140 1.259 1.119 0.326 0.000 3.270 SUBTOTAI 0.093 0.140 3.218 6.297 6.670 16.884 10.401 3 '78 1.213 48.694 TOTAL HOURS OF VALZD STABZLZTY OBSERVATIONS 2159 TOTAL HOURS OF STABILITY CLASS D 1050 TOTAL HOURS OF VALZD WIND DIRECTION-WIND SPEED-STABZLZTY CLASS D 1044 TOTAL HOURS OF VALID WIND DZRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2144 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWNS FERRY HUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AHD DZRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRZHTED: 24-JUL-95 MEAN WZND SPEED ~ 10.54 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS E1-125

0 i, JOINT PERCENTAGE FREQUENCIES OF I'D SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0 5< DELTA T<~ 1.5 C/100 M)

BROWNS FERRY HUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WIND SPEED{MPH)

DIRECTZOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5 '-7.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL N 0.002 0.047 0.093 0.047 0.280 0.700 0.700 0.047 0.000 1.915 HHE 0.005 0.093 0.187 0.093 0.326 0.700 0.420 0.280 0.000 2.104 HE 0. 001'.001 0.000 0.047 0.093 0.140 0.560 0.746 0.047 0.000 1.633 ENE 0.000 0.047 0.047 0.326 0.373 0.280 0.047 0.000 1.120 E 0.002 0.000 O.14O 0.326 0.140 0.653 0.140 0.000 0.000 1.402 ESE 0.004 0.000 0.233 0.140 0.187 0.700 0.140 0.000 0.093 1.496 SE 0.008 0.047 0 ~ 420 0 ~ 466 0.187 1.306 0.560 0.233 0 140 3.366 SSE 0.003 0.000 0.187 0.420 0.886 1.259 0.840 0.700 0.093 4.387 S 0.006 0.000 0.326 0.233 0.280 1.073 2.285 1.166 0.140 5.509 SSW 0.004 0.004 0.047 0.000 0.187 0.233 0.233 0.187 0.606 0.280

l. 259 2.192 1.119 0.187 5.834 SW 1.353 0.420 0. 280 0.326 3.082 WSW 0.002 0.000 0.093 0.140 0.140 0.606 0.560 0.187 0.000 1.727 W 0.002 0.000 0.093 0.140 0.326 0.700 0.280 0.047 0.000 1.587 WNW 0.000 0.000 0.000 0 ~ 466 0.280 0.233 0.047 0.047 0.000 1.073 HW 0.002 0.000 0.140 0.140 0.233 0.280 0.280 0.000 0.047 1.122 NNW 0.002 0.000 0.093 0.047 0.233 0.560 0.606 0.000 0.000 l. 541 SUBTOTAL 0.047 0.233 2.519 3.218 4.851 12.313 10.494 4.198 1.026 38.899 TOTAL HOURS OF VAIID STABILITY OBSERVATZOHS 2159 TOTAL HOURS OF STABILITY CLASS E 843 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABILITY CLASS E 834 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIOHS 2144 TOTAL HOURS CALM 1 METEOROLOGICAL FACZLZTY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEH 45.30 AHD 89.59 METERS WIND SPEED AHD DIRECTION MEASURED AT 92.63 METER IEVEL DATE PRZHTED: 24-JUL-95 MEAH WZHD SPEED ~ 11.57 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-126

4' JOINT PERCENTAGE FREQUENCIES OF -oD SPEED BY WIND DZRECTIOH FOR STABILITY CLASS F t 1 5< DELTA T<~ 4 0 C/100 M)

BROWHS FERRY NUCLEAR PLANT APR 1, 95 - JUH 30, 95 WIND WIND SPEED(MPH)

DZRECTZOH CALM 0.6-1.4 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 H 0.000 0.000 0.047 0.000 0.000 0.233 0.886 0.000 0.000 1.166 HHE 0.000 0.000 0.047 0.047 0.047 0.420 0.233 0.000 0.000 0.793 HE 0.000 0.000 0.047 0.093 0.000 0.233 0.653 0.187 0.000 1.213 EHE 0.000 0 F 000 0.047 0.093 0.093 0.326 0.280 0.047 0.047 0.933 E 0.000 0.000 0.047 0.000 0.140 0 '73 0.000 0.000 0.000 0.560 ESE 0.000 0.000 0.000 0.093 0.233 0 '80 0.420 0.000 0.000 1.026 SE 0.000 0.000 0.000 0.093 0.140 0.420 0.373 0.000 0.000 1.026 SSE 0.000 0.000 0.000 0.000 0.140 0.233 0.000 0.000 0.000 0.373 S 0.000 0.000 0.047 0.047 0.187 0.187 0.233 0.047 0.000 0.746 SSW 0.000 0.000 0.000 0.093 0.000 0.187 0.280 0.233 0.000 0.793 SW 0.000 0.000 0.047 0.093 0.093 0.187 0.560 0.000 0.000 0.979 WSW 0.000 0.000 0.000 0.047 0.047 0.047 0.047 0.000 0.000 0.187 W 0.000 0.000 0.000 0.047 0.047 0.093 0.000 0.000 0.000 0.187 WNW 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.000 0.000 0.093 NW 0.000 0.000 0.000 0.000 F 000 0.047 0.000 0.000 0.000 0.047 NNW 0.000 0.000 0.047 0.000 0.047 0 '47 0.000 0.000 0.000 0.140 SUBTOTAL 0.000 0.000 0.420 0.793 1.213 3.312 3.965 0.513 0.047 10.261 TOTAL HOURS OF VALID STABILZTY OBSERVATZONS 2159, TOTAL HOURS OF STABZLZTY CLASS F 220 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABZLZTY CLASS F 220 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILZTY OBSERVATIONS 2144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABZLZTY BASED OH DELTA-T BETWEEN 45 30 AHD 89.59 METERS WIND SPEED AND DIRECTIOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED ~ 11.38 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCENTAGE FREQUENCIES 0:

OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G { DELTA T > 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT APR 1, 95 JUH 30, 95 WIND WZND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.000 0.047 0.047 0.093 0.000 0.000 0.187 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.280 0.047 0.000 0.326 HE 0.000 0.000 0.000 0.047 0.000 0.233 0.047 0.000 0.000 0.326 ENE 0.000 0.000 0.000 0 '47 0.000 0.047 0.233 0.000 0.000 0.326 E 0.000 0.000 0.000 0.047 0.047 0.000 0.047 0.000 0.000 0.140 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 0.047 0 '47 F 000 0.000 0.093 SSE 0.000 0.000 0.000 0.000 0.000 0.187 0 '47 0.000 0.000 0.233 S 0.000 0.000 0.000 0.000 0.047 0.047 0.000 0.000 0.000 0.093 SSW 0.000 0.000 0.000 0.000 F 000 0.047 0.047 0 '47 0.000 0.140 SW 0.000 F 000 0.000 0.000 0.047 0.000 0.187 0.047 0.000 0.280 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 WHW 0.000 0.000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 F 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 '40 0 '87 0.653 1.026 0.140 0.000 2.146 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2159 TOTAL HOURS OF STABZLITY CLASS G 46 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILZTY CLASS G 46 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATZOHS 2144 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JUL-95 MEAN WIND SPEED ~ 12.60 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-128

Radiological Impact Assessment Browns Ferry Nuclear Plant January - December 1995 Table 24 Joint Frequency Distribution in Percent for Stack Releases Third Quarter El-129

.JOINT PERCENTAGE FRE(}UEHCIES OF D SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA TC~-1. 9 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUI 1i 95 SEP 30 '5 WZHD WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5. ~ 5.5-7.I 7 5-12 4 12.5-18.4 18.5-24.4 >+24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 HE 0.000 0.000 0.000 F 000 0 000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0 F 000 0 000 F 000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000'.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 SE 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 SSE 0.000 0.000 0 F 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 F 000 0.000 SSW 0.000 0.000 0 000 0 000 F 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 F 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 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0 F 000 0 000 0.000 HHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2201 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTZOH-WZHD SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATIONS 2101 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLITYf BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 30 AND 89 59 METERS WIND SPEED AHD DZRECTZON MEASURED AT 92.63 METER LEVEL DATE PRIHTED: 27-OCT-95 MEAN WIND SPEED ~ 0 00 NOTE TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-130

JOIHT PERCENTAGE FREQUENCIES OF'-. D SPEED BY WIND DZRECTZOH FOR STABILITY CLASS B (-1 9< DELTA T<~-I 7 C/100 M)

BROWHS tERRY NUCLEAR PLANT JUL 1g 95 - SEP 30'5 WIND WZHD SPEED(MPH)

DZRECTIOH CALM 0.6-1. ~ 1 5-3.4 3.5-5.4 5 '-7.4 7.5-12 4 12.5-18.4 lb.5-24.4 >~24.5 TOTAl H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 HHE 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0 000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 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 F 000 W 0.000 .0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 Q.000 WHW 0.000 0 F 000 0.000 0.000 0.000 0+000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHW 0.000 0 F 000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000.

TOTAL HOURS OF VALID STABILITY OBSERVATZOHS 2201 TOTAL HOURS Ot STABILITY CLASS B 0 TOTAL HOURS Ot VALID WZHD DIRECTIOH-WZHD SPEED-STABILZTY CLASS B 0 TOTAL HOURS Ot VALID WIND DIRECTION-WIND SPEED-STABILITY OBSERVATZOHS 2101 TOTAL HOURS CAZM 0 METEOROLOGICAL tACZLZTY: BROWHS tERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45 30 AHD 89.59 METERS WIND,SPEED AHD DZRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WZHD SPEED ~ 0.00 HOTS: TOTALS AHD SUBTOTALS ARE OBTAZHED tRON UNROUNDED HUMBERS E1-131

JOZHT PSRCEHTAQE tREQUSHCIES Ot D SPEED BT WIND DIRECTION tOR STABILZTT CLASS. C (-1.74 DSLTA T<~-1 5 C/100 M)

BROWHS tERRT NUCLEAR PLANT JUL 1 ~ 95 SSP 30 '5 WIHD WIND SPEED(MPH)

DIRECTION CALM 0 6-1.4 1.5-3.4 3.5-5. ~ 5.5-7. ~ 7.5-12.4 12.5-18.4 18.5-24.4 >~24 ' TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 HS 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 SHE 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'.000 0.000 0 F 000 0.000 ESE 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 t) . 000 0.000 0.000 0 F 000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0 F 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 F 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 WHW 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHW 0.000 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 0.000 0.000 TOTAL HOURS OP VALID STABILITY OBSERVATIONS 2201 TOTAL HOURS Ot STABILITY CLASS C 0 TOTAL HOURS OP VALZD WZHD DZRSCTIOH-WIND SPEED-STABILZTT CLASS C 0 TOTAl HOURS Ot VALID WZHD DIRECTZOH-WIND SPEED-STABIIITT OBSERVATZOHS 2101 TOTAL HOURS CALM 0 METEOROLOQZCAL FACZLZTT'ROWHS FERRT NUCLEAR PLANT STABILITT BASSD OH DELTA-T BSTWSEH 45 30 AHD 89.59 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRZHTED: 27-OCT-95 MEAN WIND SPEED ~ 0.00 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED tROM UNROUNDED NUMBERS El-132

JOINT PERCENTAGE FREQUENCIES OF D SPEED BY WIND DZRECTZOH FOR STABILITY CLASS D (-I'< DELTA T<~-0 5 C/100 M)

BROWHS tERRY HUCLEAR PLANT JUL li 95 SEP 30, 95 WIHD WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-7 ' 7 5-12.4 12.5-18.4 18.5-24.4 >M24 5 TOTAL H 0.001 0.000 0.048 0.095 1.428 2.142 1 ~ 380 0.190 0.000 5.284 HHE F 001 0.048 0.000 0.286 0.714 1.666 1 ~ 475 0.000 0.000 4.189 NE 0.003 0.000 0.190 0.381 0.095 .0.714 0.333 0.000 0.000 1 ~ 717 ENE 0.002 0.000 0.095 0.333 0.238 1.047 0.000 0.000 0.000 1.715 E 0.000 0.000 0.000 0.381 0.286 0.476 0.048 ~

0.000 0.000 1.190 ESE 0.002 0.000 0.095 0.143 0.143 0.857 0.476 0 '24 0.095 2.334 SE 0 '02 0.000 0.095 0.857 0.904 2.237 1.571 0.619 0.524 6.808 SSE 0.007 0.000 0.428 0.762 0.571 1.380 1.999 0.904 0.095 6.147 S 0.009 0.000 0.524 0.428 0.524 0.666 0.762 0.143 0.143 3.198 SSW 0.004 0.000 0.238 0.571 0.238 0.571 0.476 0.428 0.000 2.527 SW 0.004 0.000 0.238 0.$ 57 0 '90 0.809 0.238 0.095 0.000 2.432 WSW 0.007 0.048 0.381 0.714 0.476 0.524 0.143 0.000 0.000 2.292 W 0.002 0.000 0.143 0.666 1.761 1.904 0.048 0.000 F 000 4.524 WNW 0.002 0.000 0.095 0.571 0.952 1.904 0 238 0.048 0.000 3.$ 09 HW 0.000 0.000 0.000 0.190 1.571 1.904 0.428 0.000 0.000 4.093 HHW 0.002 0.000 0.095 0.333 0.571 1.000 0.333 0.048 0.000 2.381 SUBTOTAL 0.048 0.095 2.665 7.568 10 '62 19.800 9.948 2.999 0.857 54.641 TOTAL HOURS Ot VALID STABILITY OBSERVATIONS 2201 TOTAL HOURS OF STABILITY CLASS D 1189 TOTAL HOURS Ot VALID WZHD DIRECTION-WIND SPEED-STABZLZTY CLASS D 1148 TOTAL HOURS Ot VALID WIND DIRECTION-WIND SPEED STABILITY OBSERVATZOHS 2101 TOTAL HOURS CALM 1 METEOROLOGICAL FACZLZTY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AND DZRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WIND SPEED ~ 9. 81 NOTE: TOTALS AND SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-133

JOINT PERCENTAGE FREQUENCIES OF D SPEED BY WIND DIRECTION FOR -

STABZLITY CLASS E (-0 ~ 5< DELTA T<m 1,5 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL '1, 95 SEP 30, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5.4 5.5-3.4 7 '-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.010 0.000 0.143 0.143 0.381 1.809 1.047 0.000 0.000 3 '32 HHE 0.007 0.048 0.048 0.048 0.476 1.285 1.142 0.381 0.048 3.481 HE 0.010 0.000 0.143 0.095 0.333 0.952 0.333 0.286 0.000 2.152 EHE 0.010 0.000 0.143 0.333 0.190 0.571 0.428 0.000 0.000 1 676 E 0.010 0.000 0.143 0.143 0.381 0.714 0.476 0.000 0.000 1.867 ESE 0.024 0.048 0.286 0.428 F 286 0.857 0.666 0.048 0.000 2.642 SE 0.014 0.095 0 '95 0.524 0.666 1.285 1.190 1.904 0.381 0.143 0.048 0.048 0.000 4.773 3.040 SSE 0.041 0.048 0.524 0.333 0.476 S F 024 0.000 0.333 0.381 0.286 0.190 0.143 0.048 0.000 1. 404 SSW 0.021 0.095 0.190 0.286 0.286 0.190 0.095 0.048 0.000 1.211 SW 0.010 0.000 0.143 0.048 0.143 0.476 0.048 0.048 0.000 0.915 WSW 0.010 0 '48 0.095 0.095 0.048 0.095 0.143 0.190 0.095 0.095 0.000 0.048 0.000 0.000 0.534 0.673 W 0.007 0.000 0.095 0.143 WHW 0 021 0.000 0.286 0.381 0.333 0.095 0.000 0.095 0.000 1 ~ 211 HW 0.007 0.000 0.095 F 238 0.476 0.619 0.143 0.048 0.000 1.625 NHW 0.010 0.000 0.143 0.381 0.333 0.857 0.428 0.238 0.000 2.390 SUBTOTAL 0.238 0.381 2.903 3.998 5.188 11.423 7.425 1.475 0.095 33.127 TOTAL HOURS OF VALZD STABZLITY OBSERVATIONS 2201 TOTAL HOURS OF STABILITY CLASS E 730 TOTAL HOURS OF VALID WIHD DIRECTION-WZHD SPEED-STABILITY CLASS E 696 TOTAL HOURS Ot VALID WIND DIRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2101 TOTAL HOURS CALM 5 METEOROLOGICAL FACZLZTY: BROWHS FERRY HUCLEAR PLAHT STABZLZTY BASED OH DELTA-T BETWEEN 45.30 AHD 89 ~ 59 METERS WIND SPEED AND DIRECTZOH MEASURED AT 92 63 METER LEVEL DATE PRIHTED: 27-OCT-95 MEAN WIND SPEED 55 9.53 NOTE: TOTALS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-134

JOINT PERCENTAGE FREQUENCIES OF D SPEED BY WIND DIRECTION FOR STABILITY CLASS F { 1~5 < DEI TA TC~ 4. 0 C/100 M)

BROWNS FERRY NUCLEAR PLANT JUL 1, 95 SEP 30 '5 WIHD WZHD SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5 4 5.5-7.4 7.5-12. 4 12 ~ 5-18. 4 18. 5-24. 4 >sa24.5 TOTAL H 0.000 0.000 0.095 0.000 0.000 0.190 0.286 0.000 0.000 0.571 HNE 0.000 0.000 os o48 0.095 0.048 0.143 1.333 0.476 0.000 2 '42 HE 0.000 0.000 0.000 0.095 0.000 0 ~ 428 1.142 0.381 0.000 2.047 EHE 0.000 0.000 0.000 0.048 0.095 0.476 0.428 0.000 0.000 1.047 E 0.000 0.000 0.000 0.095 0.190 0.619 0.095 0.095 0.000 1.095 ESE 0.000 0.000 0.048 0.095 0.190 0.714 0.381 0.095 0.000 1.523 SE 0.000 0.000 0.000 0.048 0.000 0.476 0.190 0.048 0.000 0.762 SSE 0.000 0.000 0.000 0.048 0 F 000 0.143 0.048 0.000 0 F 000 0.238 S 0.000 0.000 0.095 0.000 0.000 0.048 0.000 0 F 000 0 F 000 0.143 SSW 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 SW 0.000 0.000 0.095 0.000 0.000 0.000 0.000 0.000 0.000 0.095 WSW 0.000 0.000 0. 000- 0.000 0.000 0.000 0.048 0.000 0.000 0.048 W 0.000 0.000 0.048 0.048 0 F 000 0.000 0.000 0.000 0.000 0.095 WNW 0.000 0.048 0.048 0.095 0.000 0.000 0.000 0.000 0.000 0.190 HW 0.000 0.000 0.000 0.000 0.048 0.143 0.000 0.000 0.000 0.190 NNW 0.000 0.000 0.000 0.048 0 ~ 048 0.143 0.048 0.000 0.000 0.286 SUBTOTAL 0.000 0.048 0.476 0. 714 0.619 3.570 3.998 1.095 0.000 10.519 TOTAL HOURS OF VALID STABILITY OBSERVATZONS 2201 TOTAL HOURS OF STABILITY CLASS F 241 TOTAL HOURS OF VALID WIND DZRECTIOH-WIND SPEED-STABILITY CLASS F 221 TOTAL HOURS OF VAI ID WIND DZRECTIOH-WIND SPEED-STABILZTY OBSERVATIONS 2101 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PZANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WIND SPEED ~ 12 12 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UHROUHDED NUMBERS E1-135

JOZHT PERCENTAGE FREQUEHCZES OF 4 D SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLANT JUL 1, 95 SEP 30, 95 WZHD WIND SPEED{MPH)

DIRECTION CALM 0.6-1.4 1.5-3.4 3.5-5 ' 5.5-7 ' 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAL H 0.000 0.000 0.000 0.000 0.000 0.000 F 000 0.000 0.000 0.000 HNE 0.000 0.000 0.000 0. 000. 0.000 0.048 0.143 0.000 0.000 0.190 HE 0.000 0.000 0.000 0.000 0.000 0.095 0.476 0.190 0.000 0.762 ENE 0 F 000 0.000 0.000 0.000 0.048 0.095 0.190 0.095 0.000 0.428 E 0.000 0.000 0.048 0.000 0.095 0.048 0.048 0.000 0.000 0.238 ESE 0.000 0.000 0.000 0.000 0.000 0.048 0.000 0.000 0.000 0.048 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 0.048 0.000 0.000 0.000 0.000 0.000 0.048 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 F 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 WHW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HW 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 0.048 0.048 0.143 0.333 0.857 0.286 0.000 1 '13 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2201 TOTAL HOURS OF STABILITY CLASS G 41 TOTAL HOURS OF VALID WIND DIRECTIOH-WIHD SPEED-STABILITY CLASS G 36 TOTAL HOURS OF VALID WIND DIRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2101 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWNS FERRY NUCLEAR PLANT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89 59 METERS WIND SPEED AHD DIRECTZOH MEASURED AT 92 '3 METER LEVEL DATE PRINTED: 27-OCT-95 MEAN WIND SPEED ~ 13 '4 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-136

Radiological Impact Assessment Brogans Ferry Nuclear Plant January - December 1995 Table 25 Joint Frequency Distribution in Percent for Stack Releases Fourth Quarter El-137

JOINT PERCEHTAQE FREQUENCIES OF . D SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<~-1 9 C6t'100 M)

BROWHS FERRY HUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WIHD WIND SPEED(MPH)

DIRECTION CALM 5.6-1.4 1.5-3 ' 3.5-5.4 5.5-7.4 7.5-13.4 12.5-18.4 18.5-24.4 >>24.5 TOTAL H 0.000 0 000 0 ~ 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 E 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 ESE 0.000 0.000 0 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0 F 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 F 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 HW 0.000 0.000 0.000 0.000 0.000 o ooo 0.000 0.000 0.000 0.000 HNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 TOTAL HOURS OF VALZD STABILITY OBSERVATIOHS 2199 TOTAL HOURS OF STABILITY CLASS A 0 TOTAL HOURS OF VAZZD WIND DZRECTIOH-WIND SPEED-STABILITY CLASS A 0 TOTAL HOURS OF VALZD WZHD DZRECTIOH-WIND SPEED-STABILITY OBSERVATIONS 2178 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLZTY: BROWHS FERRY NUCLEAR PLANT STABILZTY BASED OH DELTA-T BETWEEH 45.30 AND 89.59 METERS WIND SPEED AHD DIRECTION MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JAH-96 MEAN WZHD SPEED ~ 0.00 HOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS E1-138

JOINT PERCEHTAGE FREQUENCIES OF HD SPEED BY WIND DIRECTION FOR STABII ITY CLASS B (-1.9< DELTA T<~-1.7 C/100 M)

BROWHS FERRY NUCLEAR PLANT OCT 1, 95 DEC 31, 95 WIND WIND SPEED(MPH)

DZRECTIOH CALM 0.6-1.4 1.5-3.4 3.5-5.4 5 '-7 4 7.5-12.4 12.5-18.4 18.5-24.4 )~24.5 TOTAL H 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.000 ENE 0.000 0.000 0.000 0 F 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 F 000 0.000 0.000 0.000 ESE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SSE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 S 0.000 0.000 0.000 0.000 0.000 -0 ~ 000 0.000 0.000 0.000 0.000 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 W 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.046 0.000 0.046 WHW 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 HW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NHW 0.000 0.000 0.000 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 SUBTOTAL 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.000 0.046 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABIIZTY CLASS B 1 TOTAL HOURS OF VALID WIND DIRECTION-WIND SPEED-STABILITY CLASS B 1 TOTAL HOURS OF VALID WIND DZRECTZOH-WZHD SPEED-STABILITY OBSERVATIONS 2178 TOTAL HOURS CALM 0 METEOROLOGICAI FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 45 '0 AHD 89 WIHD SPEED AHD DIRECTION MEASURED AT 92.63 METER LEVEL

'9 METERS DATE PRIHTED: 24-JAH-96 MEAN WIND SPEED ~ 19.70 NOTE: TOTALS AHD SUBTOTAIS ARE OBTAINED FROM UNROUNDED NUMBERS El-139

JOINT PERCENTAGE FREQUENCIES OF AD SPEED BY WZHD DIRECTION FOR STABZLZTY CZ,ASS C (-1.7< DELTA T<ss-1.5 C/100 M)

BROWHS FERRY NUCLEAR PLANT OCT 1, 95 - DEC 31, 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HHE 0.000 0.000 F 000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HE 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 EHE 0.000 0.000 0 F 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 F 000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.092 0.000 0.138 0 F 000 0.000 0.000 0.230 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. 06'0.'.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 SW 0.000 0.000 0.000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 WSW 0.000 0.000 0.000 0.000 0.000 0.000 0.092 0.000 0.000 0.092 W 0.000 0.000 0.000 0.000 0.000 0.092- 0.000 0.046 0.000 0.138 WHW 0.000 0.000 0.000 0 F 000 0.000 0.000 0.000 0.000 0.046 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 HNW 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 0.138 0.000 0.275 0.092 0.046 0.046 0.597 TOTAL HOURS Ot VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABZLZTY CLASS C 13 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABILITY CLASS C 13 TOTAL HOURS OF VALID WIND DZRECTZOH-WIND SPEED-STABZI ITY OBSERVATIONS 2178 TOTAL HOURS CALM 0 METEOROLOGICAL FACZLZTYt BROWHS tERRY NUCLEAR PLAHT STABILITY BASED ON DELTA-T BETWEEN 45.30 AHD 89.59 METERS WZHD SPEED AHD DZRECTIOH MEASURED AT 92 '3 METER LEVEL DATE PRINTED: 24-JAH-96 MEAN WIND SPEED ~ 11.25 NOTE: TOTAIS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS

JOINT PERCEHTAGE FREQUENCIES OF SD SPEED BY WIND DZRECTZOH FOR STABZI ZTY CLASS D (-1.5< DELTA T<~-0.5 C/100 M)

BROWNS FERRY NUCLEAR PLANT OCT 1, 95 DEC 31, 95 WIND WIND SPEED{MPH)

DIRECTION CALM 0.6-1.4 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 H 0 002 0.000 0.092 0.092 0.092 2.755 2.801 0.138 0.046 6.016 HHE 0.002 0.000 0.000 0.000 0.138 0.000 0.138 0.000 0.184 0.046 1.607 1.928 0.551 0 '84 4.732 HE 0.367 1.423 0.138 0.000 1.974 EHE 0.001 0.000 0.046 0.184 0.092 0.367 0.230 0.000 0.000 0.919 E 0.006 0.000 0 ~ 321 0.184 0.000 0.184 0.092" 0.046 0.000 0.832 ESE 0.002 0.000 0.092 0.964 0.505 1.194 0.138 0.138 0.000 3.032 SE 0.006 0.046 0.275 0.781 0.781 1.148 1.882 0.826 0.184 5.929 SSE 0.004 0.000 0.230 0.321 0.275 1.240 1. 102 0.643 0.643 4.458 S 0.004 0.046 0.184 0 '75 0.413 0.964 0 '72 0.597 F 275 3.631 SSW 0.005 0.046 0.230 0 '30 0.275 0 '89 1.194 0 '13 0.321 3.402 SW 0 '04 0.000 0.230 0.367 0.184 0.597 0.275 0 F 000 0.092 1.749 WSW 0.002 0.046 0.092 0.321 0.138 0.735 0.551 0.092 0.092 2.069 W 0.001 0.000 0.000 0.000 0.046 0.000 0 F 230

'84 0.184 0.275 0.459 1.056 0 '67 0.092 2.434 WHW 0 0.872 0.459 0.505 0.367 2.663 NW 0.005 0.000 0.275 0.184 0.321 1.423 2.571 0.735 0.275 5.790 HHW 0.003 0.046 0.138 0.000 0 '38 2.066 2.938 1.240 0.000 6.569 SUBTOTAL 0.046 0.230 2.388 4.454 3.903 16.667 19.513 6.428 2.571 56.198 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS D 1231 TOTAL HOURS OF VALID WIND DIRECTION-WZHD SPEED-STABZIITY CLASS D 1224 TOTAL HOURS OF VALID WIND DZRECTZOH-WZHD SPEED-STABILITY OBSERVATZOHS 2178 TOTAL HOURS CALM 1 METEOROLOGICAL FACILITY BROWHS FERRY HUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AND DIRECTION MEASURED AT 92.63 METER ZEVEL DATE PRINTED: 24-JAH-96 MEAN WIND SPEED ~ 12. 88 HOTE< TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED HUMBERS

4 JOZNT PERCENTAGE FREQUENCIES OF xHD SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<55 1.5 C/100 M)

BROWHS FERRY HUCLEAR PLAHT OCT 1, 95 DEC 31 5 95 WIND WZHD SPEED{MPH)

DIRECTION CALM 5. 6-1. 4 1.5-3.4 3.5-5.4 5.5-7.4 7.5-12.4 12.5-18.4 18.5-24.4 14.5 TOTAL H 0.020 0.000 0.092 0.138 0.092 0. 689 0.735 0.092 0.092 1.949 HHE 0.041 0.046 0 '38 0.184 0.230 0.551 0.689 0.092 0.000 1.969 HE 0 ~ 010 0 000 0.046 0.046 0.230 0.551 0.597 0.230 0.000 1.709 EHE 0.010 0.046 0.000 0.367 0.413 0.230 0.459 0.138 0.000 1.663 E 0.010 0.000 0.046 0.092 0.000 0.689 0.046 0.000 0 000 0.883 ESE 0.031 0.020 0.000 0.000 0.138 0 '30 0.275 0.689 0.459 0.046 F

0.000 1.867 SE 0.092 0.000 0.459 1 423 2.433 0.413 0.184 5.025 SSE 0.000 0.000 0.000 0.138 0.092 1.102 1 ~ 837 0.918 0.367 4.454 S 0.020 0.000 0.092 0 092 0.230 2.204 1 974 0.872 0.046 5.530 SSW 0.041 0.046 0.138 0.000 0.046 0.735 0.413 0.092 0.046 1.556 SW 0.010 0.000 0.046 0.092 0.092 0.092 0.000 0. 138 0.000 0.469 WSW 0.010 0.046 0.000 0.000 0.184 0.367 0.046 0.092 0.000 0.745 W 0.000 0.020 0.000 0.000 0.000 0.092 0.046 0.275 0 '75 0.046 0.000 0.000 0.643 WHW 0.184 0.046 0.092 0.184 0.000 0.000 0.617 HW 0.020 0.000 0.092 0.138 0.000 0.459 0.735 0.184 0.046 1.673 HNW 0.010 0.000 0.046 0.138 0.046 0.551 0.918 0.459 0.092 2.260 SUBTOTAL F 275 0.184 1.056 1.882 2 '09 10.698 11.570 3.765 0.872 33.012 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS E 729 TOTAL HOURS OF VALID WZHD DIRECTION-WIND SPEED-STABILITY CLASS E 719 TOTAL HOURS OF VALID WZND DZRECTZON-WZHD SPEED-STABILITY OBSERVATZOHS 2178 TOTAL HOURS CALM 6 METEOROLOGICAL FACILITY: BROWHS FERRY HUCLEAR PLANT STABII4ITY BASED OH DELTA T BETWEEH 45.30 AHD 89 59 METERS WZND SPEED AHD DZRECTIOH MEASURED AT 92 63 METER LEVEL DATE PRZHTED: 24-JAH-96 MEAH WIND SPEED ~ 12 '2 NOTE: TOTAIS AHD SUBTOTALS ARE OBTAZHED FROM UNROUNDED NUMBERS El-142

I JOINT PERCENTAGE FREQUENCIES OF HD SPEED BY WIND DIRECTZOH FOR STABILITY CLASS F ( 1 5< DELTA T<~ 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLAHT OCT 1g 95 DEC 31 '5 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 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 H 0.000 0.000 0.000 0.046 0.000 0.046 0.000 0.046 0.000 0.138 HNE 0.000 0.000 0.000 0.000 0.046 0.138 0.275 0.046 0.000 0.505 HE 0.000 0.000 0.000 0.000 0.046 0.275 0.367 0.184 0.000 0.872 ENE 0.000 0.000 0.000 0.000 0.000 0.000 0.321 0.046 0.000 0.367 E 0.018 0.046 0.000 0.046 0.092 0.275 0.000'.138 0.000 0.000 0.478 ESE 0 000 0.000 0.000 F 000 0.092 0.597 0.000 0 F 000 0.826 SE 0.018 0.046 0.000 0.046 0.000 0.367 0.505 0.000 0.000 0.983 SSE 0.000 0.000 0.000 0.000 0.000 0.184 0.321 0.000 0.000 0.505 S 0.000 0.000 0.000 0.000 0.000 0.230 0.367 0.000 F 000 0.597 SSW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.046 0.367 0 '92 F 000 0.000 0.505 SW 0.000 0.000 0 184 0.000 0.000 0.000 0.184 WSW 0 '37 0.046 0.046 0.000 0.000

~

0.092 0.000 0.000 0.000 0.220 W 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.000 0.092 WNW 0.018 0.046 0.000 0.046 0.000 0.046 0.000 0.000 0.000 0 156 HW 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 0.092 0.138 0.184 0.000 0.413 SUBTOTAL 0.092 0.184 0.046 0.184 0.367 2.938 2.525 0.505 0.000 6.841 TOTAL HOURS OF VALID STABILITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS F 152 TOTAL HOURS OF VALID WIND DIRECTZOH-WIND SPEED-STABILITY CLASS F 149 TOTAL HOURS OF VALZD WIND DIRECTZOH-WIND SPEED-STABILITY OBSERVATIONS 2178 TOTAL HOURS CALM 2 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLANT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AHD DIRECTIOH MEASURED AT 92 ~ 63 METER LEVEL DATE PRIHTED: 24-JAH-96 MEAN WIND SPEED ~ 11.78 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUNDED NUMBERS El-143

f JOINT PERCENTAGE FREQUENCIES OF'D SPEED BY WIND DIRECTION FOR STABZLZTY CLASS G (DELTA T > 4.0 C/100 M)

BROWHS FERRY NUCLEAR PLANT OCT 1 ~ 95 DEC 31 ~ 95 WIND WIND SPEED(MPH)

DIRECTION CALM 0.6-1.4 1.5-3 ~ 4 3.5-5.4 5.5-3.4 7.5-12.4 12.5-18.4 18.5-24.4 >~24.5 TOTAZ H 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.000 0.000 0.092 HHE 0.000 0.000 0.000 0.000 0.000 0.046 0.046 0.092 0.000 0.184 HE 0.000 0.000 0.000 0.000 0.000 0.230 0.367 0.230 0.000 0.826 EHE 0.000 0.000 0 000 F 000 0.000 0.184 0.000 0.184 0.000 0.367 E 0.000 0.000 0.046 0.000 0.000 0.092 0.046 0.000 0.000 0.184 ESE 0.000 0.000 F 000 0.046 0.000 0.000 0.000 0.000 0.000 0.046 SE 0.000 0.000 0.000 0.. 000 0.184 0.046 0.000 0.000 0.000 0.230 SSE 0.000 0.000 0.046 0.000 0.138 0 ~ 138 0.046 0.000 0.000 0.367 S F 000 0 F 000 0.000 ~ '0.000 0.046 F 000 0.000 0.000 0.000 0 '46 SSW 0.000 0.000 0.000 0.092 0.046 0.092 0 000 0.000 0.000 0.230 SW 0.000 0.000 0.092 0.138 0.046 0.000 0.092 0.000 0.000 0.367 WSW 0.000 0.000 0.092 0.092 0-138 0.000 0.000 0.000 0.000 0.321 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 0.046 NW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 NNW 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 SUBTOTAL 0.000 0.046 0.275 0.367 0.597 0.872 0.643 0.505 0.000 3.306 TOTAL HOURS OF VALZD STABZLITY OBSERVATIONS 2199 TOTAL HOURS OF STABILITY CLASS G 73 TOTAL HOURS OF VALID WIND DIRECTION-WIHD SPEED-STABZLZTY CLASS G 72 TOTAL HOURS OF VALID WZHD DIRECTZOH-WZHD SPEED-STABILITY OBSERVATIONS 2178 TOTAL HOURS CALM 0 METEOROLOGICAL FACILITY: BROWHS FERRY NUCLEAR PLAHT STABILITY BASED OH DELTA-T BETWEEN 45.30 AHD 89.59 METERS WIND SPEED AHD DZRECTZOH MEASURED AT 92.63 METER LEVEL DATE PRINTED: 24-JAH-96 MEAN WZHD SPEED ~ 10.67 NOTE: TOTALS AHD SUBTOTALS ARE OBTAINED FROM UNROUHDED NUMBERS El-144

ML18038B650

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