ML14160B091

Watts Bar, Unit 2 - Final Safety Analysis Report, Amendment 112, Section 2.0, Site Characteristics

ML14160B091
Person / Time
Site:	Watts Bar
Issue date:	05/30/2014
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
Shared Package
ML14160A901	List: ML14160B088 ML14160B089 ML14160B090 ML14160B091 ML14160B092 ML14160B093 ML14160B094 ML14160B095 ML14160B096 ML14160B097 ML14160B098 ML14160B099 ML14160B100 ML14160B101 ML14160B102 ML14160B104 ML14160B105 ML14160B106 ML14160B107 ML14160B108 ML14160B109 ML14160B110 ML14160B111 ML14160B112 ML14160B113 ML14160B114 ML14160B115 ML14160B116 ML14160B117 ML14160B118 ML14160B119 ML14161A058 ML14161A060 ML14161A061 ML14161A062 ML14161A063 ML14161A064 ML14161A065 ML14161A066 ML14161A067 ML14161A068 ML14161A069 ML14161A070 ML14161A071 ML14161A072 ML14161A073 ML14161A074 ML14161A075 ML14161A076 ML14161A077 ... further results
References
Download: ML14160B091 (287)

Text

Table of Contents2-iWATTS BARTABLE OF CONTENTSSectionTitlePage2.0SITE CHARACTERISTICS2.1GEOGRAPHY AND DEMOGRAPHY2.1-12.1.1SITE LOCATION AND DESCRIPTION2.1-12.1.1.1SPECIFICATION OF LOCATION2.1-1 2.1.1.2SITE AREA MAP2.1-1 2.1.1.3BOUNDARIES FOR ESTABLISHING EFFLUENT LIMITS2.1-22.1.2EXCLUSION AREA AUTHORITY AND CONTROL2.1-2 2.1.2.1AUTHORITY2.1-2 2.1.2.2CONTROL OF ACTIVITIES UNRELATED TO PLANT OPERATION2.1-22.1.2.3ARRANGEMENTS FOR TRAFFIC CONTROL2.1-2 2.1.2.4ABANDONMENT OR RELOCATION OF ROADS2.1-2 2.1.3POPULATION DISTRIBUTION2.1-2 2.1.3.1POPULATION WITHIN 10 MILES2.1-3 2.1.3.2POPULATION BETWEEN 10 AND 50 MILES2.1-3 2.1.3.3TRANSIENT POPULATION2.1-4 2.1.3.4LOW POPULATION ZONE2.1-4 2.1.3.5POPULATION CENTER2.1-4 2.1.3.6POPULATION DENSITY2.1-42.2NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES2.2-12.2.1LOCATION AND ROUTE2.2-1 2.2.2DESCRIPTIONS2.2-1 2.2.2.1DESCRIPTION OF FACILITIES2.2-1 2.2.2.2DESCRIPTION OF PRODUCTS AND MATERIALS2.2-12.2.2.3PIPELINES2.2-1 2.2.2.4WATERWAYS2.2-1 2.2.2.5AIRPORTS2.2-2 2.2.2.6PROJECTIONS OF INDUSTRIAL GROWTH2.2-22.2.3EVALUATION OF POTENTIAL ACCIDENTS2.2-2 2.2.

3.1REFERENCES

2.2-32.3METEOROLOGY2.3-12.3.1REGIONAL CLIMATE2.3-1 2.3.1.1DATA SOURCES2.3-1 2-iiTable of ContentsWATTS BARTABLE OF CONTENTSSectionTitlePage2.3.1.2GENERAL CLIMATE2.3-12.3.1.3SEVERE WEATHER2.3-2 2.3.2LOCAL METEOROLOGY2.3-5 2.3.2.1DATA SOURCES2.3-5 2.3.2.2NORMAL AND EXTREME VALUES OF METEOROLOGICAL PARAMETERS2.3-52.3.2.3POTENTIAL INFLUENCE OF THE PLANT AND ITS FACILITIES ON LOCAL METEOROLOGY2.3-82.3.2.4LOCAL METEOROLOGICAL CONDITIONS FOR DESIGN AND OPERATING BASES2.3-92.3.3ONSITE METEOROLOGICAL MEASUREMENTS PROGRAM2.3-92.3.3.1PREOPERATIONAL PROGRAM2.3-9 2.3.3.2OPERATIONAL METEOROLOGICAL PROGRAM2.3-12 2.3.3.3ONSITE DATA SUMMARIES OF PARAMETERS FORDISPERSION METEOROLOGY2.3-122.3.4SHORT-TERM (ACCIDENT) DIFFUSION ESTIMATES2.3-142.3.4.1OBJECTIVE2.3-14 2.3.4.2CALCULATION RESULTS2.3-16 2.3.5LONG-TERM (ROUTINE) DIFFUSION ESTIMATES2.3-182.4HYDROLOGIC ENGINEERING2.4-12.4.1HYDROLOGICAL DESCRIPTION2.4-1 2.4.1.1SITES AND FACILITIES2.4-1 2.4.1.2HYDROSPHERE2.4-2 2.4.2FLOODS2.4-6 2.4.2.1FLOOD HISTORY2.4-6 2.4.2.2FLOOD DESIGN CONSIDERATIONS2.4-7 2.4.2.3EFFECTS OF LOCAL INTENSE PRECIPITATION2.4-8 2.4.3PROBABLE MAXIMUM FLOOD (PMF) ON STREAMS AND RIVERS2.4-112.4.3.1PROBABLE MAXIMUM PRECIPITATION (PMP)2.4-12 2.4.3.2PRECIPITATION LOSSES2.4-13 2.4.3.3RUNOFF AND STREAM COURSE MODEL2.4-13 2.4.3.4PROBABLE MAXIMUM FLOOD FLOW2.4-17 2.4.3.5WATER LEVEL DETERMINATIONS2.4-182.4.3.6COINCIDENT WIND WAVE ACTIVITY2.4-18 2.4.4POTENTIAL DAM FAILURES, SEISMICALLY INDUCED2.4-21 Table of Contents2-iiiWATTS BARTABLE OF CONTENTSSectionTitlePage2.4.4.1DAM FAILURE PERMUTATIONS2.4-222.4.4.2UNSTEADY FLOW ANALYSIS OF POTENTIAL DAM FAILURES2.4-332.4.4.3WATER LEVEL AT PLANT SITE2.4-33 2.4.5PROBABLE MAXIMUM SURGE AND SEICHE FLOODING2.4-33 2.4.6PROBABLE MAXIMUM TSUNAMI FLOODING2.4-33 2.4.7ICE EFFECTS2.4-34 2.4.8COOLING WATER CANALS AND RESERVOIRS2.4-35 2.4.9CHANNEL DIVERSIONS2.4-35 2.4.10FLOODING PROTECTION REQUIREMENTS2.4-352.4.11LOW WATER CONSIDERATIONS2.4-36 2.4.11.1 LOW FLOW IN RIVERS AND STREAMS2.4-36 2.4.11.2LOW WATER RESULTING FROM SURGES, SEICHES, OR TSUNAMI2.4-362.4.11.3HISTORICAL LOW WATER2.4-36 2.4.11.4FUTURE CONTROL2.4-37 2.4.11.5PLANT REQUIREMENTS2.4-37 2.4.12DISPERSION, DILUTION, AND TRAVEL TIMES OFACCIDENTAL RELEASES OF LIQUID EFFLUENTS2.4-382.4.12.1RADIOACTIVE LIQUID WASTES2.4-38 2.4.12.2ACCIDENTAL SLUG RELEASES TO SURFACE WATER2.4-382.4.12.3EFFECTS ON GROUND WATER2.4-40 2.4.13GROUNDWATER2.4-41 2.4.13.1DESCRIPTION AND ON-SITE USE2.4-41 2.4.13.2SOURCES2.4-42 2.4.13.3ACCIDENT EFFECTS2.4-43 2.4.13.4MONITORING AND SAFEGUARD REQUIREMENTS2.4-44 2.4.13.5DESIGN BASIS FOR SUBSURFACE HYDROSTATIC LOADING2.4-442.4.14FLOODING PROTECTION REQUIREMENTS2.4-442.4.

14.1INTRODUCTION

2.4-45 2.4.14.2PLANT OPERATION DURING FLOODS ABOVE GRADE2.4-46 2.4.14.3WARNING SCHEME2.4-48 2.4.14.4PREPARATION FOR FLOOD MODE2.4-48 2.4.14.5EQUIPMENT2.4-49 2.4.14.6SUPPLIES2.4-51 2.4.14.7PLANT RECOVERY2.4-51 2-ivTable of ContentsWATTS BARTABLE OF CONTENTSSectionTitlePage2.4.14.8WARNING PLAN2.4-512.4.14.9BASIS FOR FLOOD PROTECTION PLAN IN RAINFALL FLOODS2.4-522.4.14.10BASIS FOR FLOOD PROTECTION PLAN IN SEISMIC-CAUSED DAM FAILURES2.4-572.4.14.11SPECIAL CONDITION ALLOWANCE2.4-582.5GEOLOGY, SEISMOLOGY, AND GEOTECHNICAL ENGINEERING SUMMARY OF FOUNDATION CONDITIONS2.5-12.5.1BASIC GEOLOGY AND SEISMIC INFORMATION2.5-22.5.1.1REGIONAL GEOLOGY2.5-3 2.5.1.2SITE GEOLOGY2.5-26 2.5.2VIBRATORY GROUND MOTION2.5-34 2.5.2.1SEISMICITY2.5-34 2.5.2.2GEOLOGIC STRUCTURES AND TECTONIC ACTIVITY2.5-412.5.2.3CORRELATION OF EARTHQUAKE ACTIVITY WITH GEOLOGIC STRUCTURES TO TECTONIC PROVINCES2.5-422.5.2.4MAXIMUM EARTHQUAKE POTENTIAL2.5-42 2.5.2.5SEISMIC WAVE TRANSMISSION CHARACTERISTICS OF THE SITE2.5-442.5.2.6SAFE SHUTDOWN EARTHQUAKE2.5-45 2.5.2.7OPERATING BASIS EARTHQUAKE2.5-45 2.5.3SURFACE FAULTING2.5-45 2.5.3.1GEOLOGIC CONDITIONS OF THE SITE2.5-452.5.3.2EVIDENCE OF FAULT OFFSET2.5-45 2.5.3.3EARTHQUAKES ASSOCIATED WITH CAPABLE FAULTS2.5-542.5.3.4INVESTIGATIONS OF CAPABLE FAULTS2.5-54 2.5.3.5CORRELATION OF EPICENTERS WITH CAPABLE FAULTS2.5-562.5.3.6DESCRIPTION OF CAPABLE FAULTS2.5-56 2.5.3.7ZONE REQUIRING DETAILED FAULTING INVESTIGATION2.5-562.5.3.8RESULTS OF FAULTING INVESTIGATIONS2.5-56 2.5.4STABILITY OF SUBSURFACE MATERIALS2.5-562.5.4.1GEOLOGIC FEATURES2.5-56 2.5.4.2PROPERTIES OF SUBSURFACE MATERIALS2.5-57 2.5.4.3EXPLORATION2.5-89 2.5.4.4GEOPHYSICAL SURVEYS2.5-90 2.5.4.5EXCAVATIONS AND BACKFILL2.5-93 Table of Contents2-vWATTS BARTABLE OF CONTENTSSectionTitlePage2.5.4.6GROUNDWATER CONDITIONS2.5-1012.5.4.7RESPONSE OF SOIL AND ROCK TO DYNAMIC LOADING2.5-102 2.5.4.8LIQUEFACTION POTENTIAL2.5-103 2.5.4.9EARTHQUAKE DESIGN BASIS2.5-113 2.5.4.10STATIC ANALYSIS2.5-113 2.5.4.11SAFETY-RELATED CRITERIA FOR FOUNDATIONS2.5-1152.5.4.12TECHNIQUES TO IMPROVE SUBSURFACE CONDITIONS2.5-1152.5.4.13CONSTRUCTION NOTES2.5-118 2.5.5STABILITY OF SLOPES2.5-118 2.5.5.1SLOPE CHARACTERISTICS2.5-118 2.5.5.2DESIGN CRITERIA AND ANALYSIS2.5-1202.5.5.3LOGS OF BORINGS2.5-127 2.5.5.4COMPACTION SPECIFICATIONS2.5-1272.5.6EMBANKMENTS2.5-127 2-viTable of ContentsWATTS BARTABLE OF CONTENTSSectionTitlePageTHIS PAGE INTENTIONALLY BLANK List of Tables2-viiWATTS BARLIST OF TABLESSectionTitleTABLE 2.1-1WATTS BAR2000 POPULATION DISTRIBUTIONWITHIN 10 MILES OF THE SITE(SHEET 1 OF 1)TABLE 2.1-2WATTS BAR2010 POPULATION DISTRIBUTIONWITHIN 10 MILES OF THE SITETABLE 2.1-3WATTS BAR 2020 POPULATION DISTRIBUTIONWITHIN 10 MILES OF THE SITETABLE 2.1-4WATTS BAR 2030 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-5WATTS BAR 2040 POPULATION DISTRIBUTIONWITHIN 10 MILES OF THE SITETABLE 2.1-6WATTS BAR 2050 POPULATION DISTRIBUTIONWITHIN 10 MILES OF THE SITETABLE 2.1-7WATTS BAR 2060 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-8WATTS BAR 2000 POPULATION DISTRIBUTIONWITHIN 50 MILES OF THE SITETABLE 2.1-9WATTS BAR 2010 POPULATION DISTRIBUTIONWITHIN 50 MILES OF THE SITETABLE 2.1-10WATTS BAR 2020 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-11WATTS BAR 2030 POPULATION DISTRIBUTIONWITHIN 50 MILES OF THE SITETABLE 2.1-12WATTS BAR 2040 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-13WATTS BAR 2050 POPULATION DISTRIBUTIONWITHIN 50 MILES OF THE SITE 2-viiiList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.1-14WATTS BAR 2060 POPULATION DISTRIBUTIONWITHIN 50 MILES OF THE SITETABLE 2.1-15WATTS BAR 2009 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-16WATTS BAR 2010 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-17WATTS BAR 2020 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-18WATTS BAR 2030 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-19WATTS BAR 2040 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-20WATTS BAR 2050 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-21WATTS BAR 2060 ESTIMATED PEAK RECREATION VISITATIONWITHIN 10 MILES OF THE SITETABLE 2.1-22SCHOOL ENROLLMENTSWITHIN 10 MILES OFWATTS BAR NUCLEAR PLANTTABLE 2.2-1WATERBORNE HAZARDOUS MATERIAL TRAFFIC (TONS)TABLE 2.2-2DELETED BY AMENDMENT 94 TABLE 2.3-1THUNDERSTORM DAY FREQUENCIESTABLE 2.3-1AEXTREME WIND SPEEDSTABLE 2.3-1BSTORM EVENTS FOR RHEA AND SURROUNDING COUNTIESTABLE 2.3-2TEMPERATURE DATADAYTON AND DECATUR, TENNESSEE COOPERATIVE OBSERVER DATAA(DATA IN °F)

List of Tables2-ixWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-3TEMPERATURE DATACHATTANOOGA, TENNESSEE NATIONAL WEATHER SERVICEA(DATA IN °F)TABLE 2.3-4PRECIPITATION DATAWATTS BAR NUCLEAR PLANT AND WATTS BAR DAM PRECIPITATION DATA (INCHES)(DATA IN INCHES)TABLE 2.3-5SNOWFALL DATA (INCHES) DAYTON, TENNESSEE (DATA IN INCHES)TABLE 2.3-6SNOWFALL DATACHATTANOOGA AND KNOXVILLE, TENNESSEE NWS(DATA IN INCHES)TABLE 2.3-7AVERAGE RELATIVE HUMIDITY DATA (PERCENT) - SELECTED HOURS CHATTANOOGA, TENNESSEE*TABLE 2.3-8RELATIVE HUMIDITY (PERCENT) NATIONAL WEATHER SERVICE STATION CHATTANOOGA, TENNESSEE*JANUARY 1965-DECEMBER 1971TABLE 2.3-9ABSOLUTE HUMIDITYCHATTANOOGA, TENNESSEE NWS(DATA IN GM/M3)

JANUARY 1965-DECEMBER 1971*TABLE 2.3-10RELATIVE HUMIDITYWATTS BAR NUCLEAR PLANT METEOROLOGICAL FACILITY(SHEET 1 OF 2)(DATA IN PERCENT)

JULY 1, 1973 - JUNE 30, 1975 *TABLE 2.3-10RELATIVE HUMIDITYWATTS BAR NUCLEAR PLANT METEOROLOGICAL FACILITY(SHEET 2 OF 2)(DATA IN PERCENT)

JANUARY 1, 1976 - DECEMBER 31, 2008 *TABLE 2.3-11ABSOLUTE HUMIDITYWATTS BAR NUCLEAR PLANT METEOROLOGICAL FACILITY(SHEET 1 OF 2)

(DATA IN GM/M3)JULY 1, 1973 - JUNE 30, 1975

• 2-xList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-11ABSOLUTE HUMIDITYWATTS BAR NUCLEAR PLANT METEOROLOGICAL FACILITY(SHEET 2 OF 2)(DATA IN GM/M3)JANUARY 1, 1976 - DECEMBER 31, 2008 *TABLE 2.3-12FOG DATA*TABLE 2.3-13JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASSWATTS BAR NUCLEAR PLANTJAN 1, 1974 - DEC 31, 1993TABLE 2.3-14JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-15WIND DIRECTION PERSISTENCE DATA DISREGARDING STABILITY, WATTS BAR NUCLEAR PLANTTABLE 2.3-16WIND DIRECTION PERSISTENCE DATA DISREGARDING STABILITY, WATTS BAR NUCLEAR PLANTTABLE 2.3-17JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-18JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-19JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-20JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-21JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-22JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-23JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANT List of Tables2-xiWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-24JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-25JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-26JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-27JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-28JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-29JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-30JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-31JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-32JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-33JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-34JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-35JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-36JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANT 2-xiiList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-37JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-38JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-39JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-40JOINT PERCENTAGE FREQUENCIES OF WIND SPEEDBY WIND DIRECTION DISREGARDING STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-41PERCENT OCCURRENCE OF WIND SPEED* FOR ALL WIND DIRECTIONSTABLE 2.3-42PERCENT OCCURRENCES OF INVERSION CONDITIONS AND PASQUILL STABILITY CLASSES A-G*

WATTS BAR NUCLEAR PLANTTABLE 2.3-43DELETED BY AMENDMENT 63 TABLE 2.3-44INVERSION PERSISTENCE DATAWATTS BAR NUCLEAR PLANTTABLE 2.3-45JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (DELTA T<=-1.9 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-46JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-47JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-48JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-49JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M), WATTS BAR NUCLEAR PLANT List of Tables2-xiiiWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-50JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F ( 1.5< DELTA T<= 4.0 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-51JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FORSTABILITY CLASS G (DELTA T > 4.0 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-52JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-53 JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FORSTABILITY CLASS A (DELTA T<=-1.9 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-54JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS B (-1.9< DELTA T<=-1.7 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-55JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FORSTABILITY CLASS C (-1.7< DELTA T<=-1.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-56JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< DELTA T<=-0.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-57JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-58JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FORSTABILITY CLASS F (1.5< DELTA T<= 4.0 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-59JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M) WATTS, BAR NUCLEAR PLANT 2-xivList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-60JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-61CALCULATED 1-HOUR AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT MINIMUM DISTANCE (1100 METERS) BETWEEN RELEASE ZONE (100 M RADIUS) AND EXCLUSION AREA BOUNDARY (1200 M RADIUS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-61ACALCULATED 1-HOUR AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT MINIMUM DISTANCE (1100 METERS) BETWEEN RELEASE ZONE (100 M RADIUS) AND EXCLUSION AREA BOUNDARY (1200 M RADIUS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-61BCALCULATED 1-HOUR AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT MINIMUM DISTANCE (1100 METERS) BETWEEN RELEASE ZONE (100 M RADIUS) AND EXCLUSION AREA BOUNDARY (1200 M RADIUS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-62CALCULATED 1-HOUR AVERAGE AND ANNUAL AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-62ACALCULATED 1-HOUR AVERAGE AND ANNUAL AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-62BCALCULATED 1-HOUR AVERAGE AND ANNUAL AVERAGE ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-63VALUES OF 5TH PERCENTILE OVERALL SITE 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-63AVALUES OF 5TH PERCENTILE OVERALL SITE 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANT List of Tables2-xvWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-63BVALUES OF 5TH PERCENTILE OVERALL SITE 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-640.5TH PERCENTILE SECTOR VALUES OF 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE OUTER BOUNDARY DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-64A0.5TH PERCENTILE SECTOR VALUES OF 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE OUTER BOUNDARY DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-64B0.5TH PERCENTILE SECTOR VALUES OF 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE OUTER BOUNDARY DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-65DELETED BY AMENDMENT 107TABLE 2.3-66ATMOSPHERIC DISPERSION FACTORS (X/Q), SEC/M3, FOR DESIGN BASIS ACCIDENT ANALYSES BASED ON ONSITE METEOROLOGICAL DATA FOR WATTS BAR NUCLEAR PLANTATABLE 2.3-66AATMOSPHERIC DISPERSION FACTORS (X/Q), SEC/M3, FOR DESIGN BASIS ACCIDENT ANALYSES BASED ON ONSITE METEOROLOGICAL DATA FOR WATTS BAR NUCLEAR PLANT1TABLE 2.3-66BATMOSPHERIC DISPERSION FACTORS (X/Q), SEC/M3, FOR DESIGN BASIS ACCIDENT ANALYSES BASED ON ONSITE METEOROLOGICAL DATA FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-67DISPERSION METEOROLOGY - ONSITE 10-METER WIND DATA - 5TH PERCENTILE VALUES OF INVERSE WIND SPEED (1/U) DISTRIBUTIONS FOR POST-LOCA CONTROL BAY DOSE CALCULATIONS FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-67ADISPERSION METEOROLOGY - ONSITE 10-METER WIND DATA - 5TH PERCENTILE VALUES OF INVERSE WIND SPEED (1/U) DISTRIBUTIONS FOR POST-LOCA CONTROL BAY DOSE CALCULATIONS FOR WATTS BAR NUCLEAR PLANT 2-xviList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-67BDISPERSION METEOROLOGY - ONSITE 10-METER WIND DATA - 5TH PERCENTILE VALUES OF INVERSE WIND SPEED (1/U) DISTRIBUTIONS FOR POST-LOCA CONTROL BAY DOSE CALCULATIONS FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-68JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS A (DELTA T<= -1.9 C/100 M) WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-69JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS B (-1.9< DELTA T<= -1.7 C/100 M) WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-70JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS C (-1.7< DELTA T<= -1.5 C/100 M), WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-71JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS D (-1.5< DELTA T<= -0.5 C/100 M), WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-72JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS E (-0.5< DELTA T<= 1.5 C/100 M), WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-73JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS F (1.5< DELTA T<= 4.0 C/100 M), WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-74JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS G (DELTA T > 4.0 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1986 - DEC 31, 2005TABLE 2.3-75AAVERAGE ANNUAL X/Q'S OUT TO 50 MILESTABLE 2.3-75BAVERAGE ANNUAL D/Q'S OUT TO 50 MILES List of Tables2-xviiWATTS BARLIST OF TABLESSectionTitleTABLE 2.3-76JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS A (DELTA T < -1.9 C/100 M), WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-77JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS B (-1.9< DELTA T <=-1.7 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-78JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS C (-1.7< DELTA T<= -1.5 C/100 M), WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-79JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS D (-1.5< DELTA T <= -0.5 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-80JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS E (-0.5< DELTA T <= 1.5 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-81JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS F (1.5< DELTA T <= 4.0 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-82JOINT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS G (DELTA T > 4.0 C/100 M),

WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010TABLE 2.3-83JOINT PERCENTAGE FREQUENCIES OF WIND SPEED BY STABILITY CLASSES WATTS BAR NUCLEAR PLANTJAN 1, 1991 - DEC 31, 2010 2-xviiiList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.4-1LOCATION OF SURFACE WATER SUPPLIES IN THE 58.9 MILE REACH OF THE MAINSTREAM OF THE TENNESSEE RIVER BETWEEN WATTS BAR DAM (TRM 529.9) AND CHICHAMAGUA DAM (TRM 471.0)TABLE 2.4-2FACTS ABOUT TVA DAMS AND RESERVOIRSTABLE 2.4-3TVA DAMS - RIVER MILE DISTANCES TO WBNPTABLE 2.4-4FACTS ABOUT TVA DAMS ABOVE CHICKAMAUGATABLE 2.4-5FACTS ABOUT NON-TVA DAMS AND RESERVOIRSTABLE 2.4-6FLOOD DETENTION CAPACITY - TVA PROJECTS ABOVE WATTS BAR NUCLEAR PLANTTABLE 2.4-7PEAK STREAMFLOW OF THE TENNESSEE RIVER AT CHATTANOOGA, TN (USGS STATION 03568000) 1867 - 2007TABLE 2.4-8WEIR LENGTH DESCRIPTION AND COEFFICIENTSOF DISCHARGE FOR AREAS 3 AND 4TABLE 2.4-9DRAINAGE AREA PEAK DISCHARGETABLE 2.4-10SEASONAL VARIATIONS OF RAINFALL (PMP)TABLE 2.4-11PROBABLE MAXIMUM STORM PRECIPITATION AND PRECIPITATION EXCESSTABLE 2.4-12HISTORICAL FLOOD EVENTSTABLE 2.4-13UNIT HYDROGRAPH DATA TABLE 2.4-14FLOODS FROM POSTULATED SEISMIC FAILURE OF UPSTREAM DAMSTABLE 2.4-15WELL AND SPRING INVENTORY WITHIN 2-MILE RADIUS OF WATTS BAR NUCLEAR PLANT SI TETABLE 2.4-16DELETED BY AMENDMENT 98 TABLE 2.5-1SOIL STRENGTH TESTSTABLE 2.5-2WATTS BAR NUCLEAR PLANT SOIL INVESTIGATION 500-KV TRANSFORMER YARD SUMMARY OF LABORATORY TEST DATATABLE 2.5-3WATTS BAR NUCLEAR PLANT SOIL INVESTIGATION 500-KV TRANSFORMER YARD SUMMARY OF LABORATORY TEST DATATABLE 2.5-4WATTS BAR NUCLEAR PLANT SOIL INVESTIGATION NORTH COOLING TOWER SUMMARY OF LABORATORY TEST DATA List of Tables2-xixWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-5WATTS BAR NUCLEAR PLANT SOIL INVESTIGATION SOUTH COOLING TOWER SUMMARY OF LABORATORY TEST DATATABLE 2.5-6WATTS BAR NUCLEAR PLANT SOIL INVESTIGATION DIESEL GENERATOR BUILDING SUMMARY OF LABORATORY TEST DATATABLE 2.5-7WATTS BAR NUCLEAR PLANTSOIL INVESTIGATION ESSENTIAL RAW COOLING WATER SUPPLYSUMMARY OF LABORATORY TEST DATATABLE 2.5-8WATTS BAR NUCLEAR PLANTINTAKE CHANNELSOIL INVESTIGATION SUMMARY OF LABORATORY TEST DATATABLE 2.5-9WATTS BAR NUCLEAR PLANTINTAKE CHANNELSOIL INVESTIGATIONSUMMARY OF LABORATORY TEST DATA (SHEET 1 OF 2)TABLE 2.5-10WATTS BAR NUCLEAR PLANTCLASS IE CONDUITSSOIL INVESTIGATIONSUMMARY OF LABORATORY TEST DATATABLE 2.5-11WATTS BAR NUCLEAR PLANTCLASS IE CONDUITS SOIL INVESTIGATIONSUMMARY OF LABORATORY TEST DATATABLE 2.5-12SOIL DESIGN VALUESTABLE 2.5-13SURFACE SETTLEMENTS (S) AND AVERAGE DEFORMATION MODULI (E) FORCENTER OF FLEXIBLE CIRCULAR FOOTINGS LOADED WITH 5 KSFTABLE 2.5-14EFFECT OF REMOVING TOP 10 FEET OF ROCK ON SETTLEMENT OF 10-FOOT DIAMETER FLEXIBLE FOOTINGTABLE 2.5-15AVERAGE IN SITU DOWN-HOLE SOIL DYNAMICSDIESEL GENERATOR BUILDINGTABLE 2.5-16AVERAGE SEISMIC REFRACTION SOIL DYNAMICSDIESEL GENERATOR BUILDING 2-xxList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-17IN-SITU SOIL DYNAMIC PROPERTIES WATTS BAR NUCLEAR POWER PLANTCLASS IE CONDUITS AND ERCW PIPING(SHEET 1 OF 2)TABLE 2.5-17ADYNAMIC SOIL PROPERTIES - DIESEL GENERATOR BUILDINGTABLE 2.5-17BDYNAMIC SOIL PROPERTIES - ADDITIONAL DIESEL GENERATOR BUILDINGTABLE 2.5-17CDYNAMIC SOIL PROPERTIES - REFUELING WATER STORAGE TANKSTABLE 2.5-17DDYNAMIC SOIL PROPERTIES - NORTH STEAM VALVE ROOMTABLE 2.5-18WATTS BAR NUCLEAR PLANTBORROW INVESTIGATION SUMMARY OF LABORATORY TEST DATATABLE 2.5-19WATTS BAR NUCLEAR PLANTADDITIONAL BORROW AREASSUMMARY OF LABORATORY TEST DATATABLE 2.5-19ASOIL PROPERTIES, BORROW AREA 7TABLE 2.5-20GROUT USAGE TABLE 2.5-21WATTS BAR NUCLEAR PLANT INTAKE CHANNELSUMMARY OF LABORATORY TEST DATA REMOLDED CHANNEL AREA SOILSTABLE 2.5-22TVA SOIL TESTING LABORATORYSUMMARY OF TEST RESULTS WATTS BAR LIQUEFACTION STUDYTABLE 2.5-23WATERWAYS EXPERIMENT STATION, CORPS OF ENGINEERSTABLE 2.5-24WATTS BAR NUCLEAR PLANTERCW AND HPFP SYSTEMSSOIL INVESTIGATIONSUMMARY OF LABORATORY TEST DATATABLE 2.5-25WATTS BAR NUCLEAR PLANTSUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-26WATTS BAR NUCLEAR PLANTINTAKE CHANNELSAND MATERIAL SUMMARY OF CYCLIC LOADING TEST DATA List of Tables2-xxiWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-27WATTS BAR NUCLEAR PLANTINTAKE CHANNELCLAY MATERIALSUMMARY OF STATIC TEST DATATABLE 2.5-28DRILL ROD LENGTHS AND WEIGHTS VERSUS SPT SAMPLE DEPTHSAPPLYING TO 1976 AND 1979 REPORTSTABLE 2.5-29WATTS BAR NUCLEAR PLANTERCW CONDUIT 1976 REPORTTABLE 2.5-30WATTS BAR NUCLEAR PLANTERCW CONDUIT1976 REPORTTABLE 2.5-31RECOMMENDED PROCEDURES AND GUIDELINESFOR STANDARD PENETRATION TESTINGTABLE 2.5-32DRILL ROD LENGTHS AND WEIGHTS VERSUS SPT 1981 REPORTTABLE 2.5-33WATTS BAR NUCLEAR PLANTERCW CONDUIT1981 REPORTTABLE 2.5-34WATTS BAR NUCLEAR PLANTESSENTIAL RAW COOLING WATER PIPING SYSTEMLIQUEFACTION INVESTIGATIONSUMMARY OF LABORATORY TEST DATATABLE 2.5-35LABORATORY PROCEDURE FOR PERFORMING CYCLIC TRIAXIAL R TESTSTABLE 2.5-36RESULTS OF STRESS-CONTROLLED CYCLIC TRIAXIAL TESTS ON ERCW ROUTE SOILSTABLE 2.5-37SUMMARY OF CLASSIFICATION DATATABLE 2.5-38SUMMARY OF CLASSIFICATION DATA TABLE 2.5-39SUMMARY OF CLASSIFICATION DATATABLE 2.5-40SUMMARY OF CLASSIFICATION DATATABLE 2.5-41COMPARISON OF CLASSIFICATION AND DENSITYDATA OF TEST PIT AND UNDISTRIBUTED BORING SAMPLESTABLE 2.5-42WATTS BAR NUCLEAR PLANTSOIL-SUPPORTED STRUCTURESREPRESENTATIVE BASAL GRAVEL SAMPLES SUMMARY OF LABORATORY TEST DATA 2-xxiiList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-43WATTS BAR NUCLEAR PLANTSOIL-SUPPORT STRUCTURESUNDISTRIBUTED SAMPLINGSUMMARY OF LABORATORY TEST DATATABLE 2.5-44WBNP - BEARING CAPACITY - CATEGORY I SOIL-SUPPORTED STRUCTURESADOPTED SOIL PROPERTIES FOR BEARING CAPACITY DETE RMINATIONTABLE 2.5-45WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONTRENCH ASUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-45AWATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION, TRENCH A SUPPLEMENTAL BORROWSUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-46WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONTRENCH BSUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-47WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 9SUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-48WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 10SUMMARY OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-49WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 11 SUMMARY OF LABORATORY TEST DATABORROW SOIL CLASSES List of Tables2-xxiiiWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-50WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 12SUMMARY OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-51WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 13 SUMMARY OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-52WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 2C SUMMARY OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-53WATTS BAR NUCLEAR PLANTERCW LIQUEFACTIONBORROW AREA 2C EXTENSION SUMMARY OF LABORATORY TEST DATABORROW SOIL GROUPSTABLE 2.5-54SUMMARY OF LABORATORY TEST DATATABLE 2.5-55GRANULAR MATERIAL DESIGN VALUESSECTION 1032 MATERIALTABLE 2.5-56WATTS BAR NUCLEAR PLANTRELATIVE DENSITY TEST RESULTS ON ENGINEEREDGRANULAR FILL BENEATH THE DIESEL GENERATOR BUILDINGTABLE 2.5-57WATTS BAR NUCLEAR PLANTSIEVE ANALYSIS OF 1032 GRAVEL TENNESSEE VALLEY AUTHORITYTABLE 2.5-58WATTS BAR NUCLEAR PLANTERCW - PIEZOMETERSWATER LEVEL READINGSTABLE 2.5-59ERCW ROUTE LIQUEFACTION EVALUATIONMAXIMUM AND AVERAGE ELEMENT STRESSES AND PEAK ACCELERATIONAT THE TOP OF EACH LAYERTABLE 2.5-60FACTORS OF SAFETY WITH DEPTH WHEN THE WATER TABLE IS NOT CONSIDERED 2-xxivList of TablesWATTS BARLIST OF TABLESSectionTitleTABLE 2.5-61FACTORS OF SAFETY WITH DEPTH ASSUMING THE WATER TABLEIS 16.5 FEET BELOW GROUND SURFACETABLE 2.5-62SUMMARY OF SPT SAMPLES OF SILTY SANDS (SM) BELOW ERCW PIPELINES HAVING FACTOR OF SAFETY LESS THAN UNITY FOR 0.4 G PEAK GROUND SURFACE ACCELERATIONTABLE 2.5-63SUMMARY OF SPT SAMPLES OF SILTS (ML) BELOW ERCW PIPELINES HAVING FACTOR OF SAFETY LESS THAN UNITY FOR 0.4 G PEAK GROUND SURFACE ACCELERATIONTABLE 2.5-64SUMMARY OF SPT SAMPLES OF SILTY SANDS (SM) BELOW ELECTRICAL CONDUITS HAVING FACTOR OF SAFETY LESS THAN UNITY FOR 0.4 G PEAK GROUND SURFACE ACCELERATIONTABLE 2.5-65STRAIN CRITERIA FOR DETERMINING POTENTIAL SETTLEMENT OF SOILS SUBJECT TO EARTHQUAKE WITH PEAK TOP-OF-GROUND ACCELERATION OF 0.40G AT WATTS BAR NUCLEAR PLANTTABLE 2.5-66SOIL BEARING CAPACITIES AND FACTORS OF SAFETY FOR SOIL-SUPPORTED CATEGORY I STRUCTURES List of Figures2-xxvWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.1-1LOCATION OF WATTS BAR NUCLEAR PLANT SITEFIGURE 2.1-2WATTS BAR SITE LOCATION 0-50 MILESFIGURE 2.1-3WATTS BAR SITE LOCATION 0-10 MILESFIGURE 2.1-4AWATTS BAR TOPOGRAPHIC MAP & RESERVATION BOUNDARYFIGURE 2.1-4BSITE BOUNDARY / EXCLUSION AREA BOUNDARYFIGURE 2.1-5MAIN PLANT GENERAL PLAN FIGURE 2.1-6DELETED BY AMENDMENT 63FIGURE 2.1-7DELETED BY AMENDMENT 63FIGURE 2.1-8DELETED BY AMENDMENT 63FIGURE 2.1-9DELETED BY AMENDMENT 63FIGURE 2.1-10DELETED BY AMENDMENT 63FIGURE 2.1-11DELETED BY AMENDMENT 63 FIGURE 2.1-12DELETED BY AMENDMENT 63FIGURE 2.1-13DELETED BY AMENDMENT 63FIGURE 2.1-14DELETED BY AMENDMENT 63 FIGURE 2.1-15DELETED BY AMENDMENT 63FIGURE 2.1-16DELETED BY AMENDMENT 63FIGURE 2.1-17DELETED BY AMENDMENT 63 FIGURE 2.1-18DELETED BY AMENDMENT 63FIGURE 2.1-19DELETED BY AMENDMENT 63FIGURE 2.1-202010 CUMULATIVE POPULATION WITHIN 30 MILES/ 500 PERSONS PER SQUARE MILEFIGURE 2.1-212060 CUMULATIVE POPULATION WITHIN 30 MILES/ 1000 PERSONS PER SQUARE MILEFIGURE 2.2-1AIRWAYS IN THE AREA OF THE PLANT FIGURE 2.2-2MILITARY AIRWAYS IN THE AREA OF THE PLANTFIGURE 2.3-1NORMAL SEA LEVEL PRESSURE DISTRIBUTION OVER NORTH AMERICA AND THE NORTH ATLANTIC OCEANFIGURE 2.3-2TOTAL NUMBER OF FORECAST-DAYS OF HIGH METEOROLOGICAL POTENTIAL FOR AIR POLLUTION IN A 5 YEAR PERIODFIGURE 2.3-3CLIMATOLOGICAL DATA SOURCES IN AREA AROUND WATTS BAR SITE 2-xxviList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.3-4WIND SPEED AT 9.72 METERS ALL STABILITY CLASSES, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 -DECEMBER 31, 1993FIGURE 2.3-5WIND SPEED AT 46.36 METERS ALL STABILITY CLASSES, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1977 -DECEMBER 31, 1993FIGURE 2.3-6APERCENT OCCURRENCES OF PASQUILL STABILITY CLASSES A, B, C, AND D BY TIME OF DAY, WATTS BAR NUCLEAR PLANT, 1974-1993FIGURE 2.3-6BPERCENT OCCURRENCES OF PASQUILL STABILITY CLASSES E, F, AND G BY TIME OF DAY, WATTS BAR NUCLEAR PLANT, 1974-1993FIGURE 2.3-7WIND SPEED AT 9.72 METERS FOR STABILITY CLASS A, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-7AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS A, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-8WIND SPEED AT 9.72 METERS FOR STABILITY CLASS B, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-8AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS B, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-9WIND SPEED AT 9.72 METERS FOR STABILITY CLASS C, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-9AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS C, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-10WIND SPEED AT 9.72 METERS FOR STABILITY CLASS D, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-10AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS D, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-11WIND SPEED AT 9.72 METERS FOR STABILITY CLASS E, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 -DECEMBER 31, 1993 List of Figures2-xxviiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.3-11AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS E, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-12WIND SPEED AT 9.72 METERS FOR STABILITY CLASS F, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 -DECEMBER 31, 1993FIGURE 2.3-12AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS F, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-13WIND SPEED AT 9.72 METERS FOR STABILITY CLASS G, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-13AWIND SPEED AT 9.72 METERS FOR STABILITY CLASS G, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1991 - DECEMBER 31, 2010FIGURE 2.3-14TOPOGRAPHY WITHIN 10 MILE RADIUS - N FIGURE 2.3-15TOPOGRAPHY WITHIN 10 MILE RADIUS - NNEFIGURE 2.3-16TOPOGRAPHY WITHIN 10 MILE RADIUS - NEFIGURE 2.3-17TOPOGRAPHY WITHIN 10 MILE RADIUS - ENE FIGURE 2.3-18TOPOGRAPHY WITHIN 10 MILE RADIUS - EFIGURE 2.3-19TOPOGRAPHY WITHIN 10 MILE RADIUS - ESEFIGURE 2.3-20TOPOGRAPHY WITHIN 10 MILE RADIUS - SE FIGURE 2.3-21TOPOGRAPHY WITHIN 10 MILE RADIUS - SSEFIGURE 2.3-22TOPOGRAPHY WITHIN 10 MILE RADIUS - SFIGURE 2.3-23TOPOGRAPHY WITHIN 10 MILE RADIUS - SSW FIGURE 2.3-24TOPOGRAPHY WITHIN 10 MILE RADIUS - SWFIGURE 2.3-25TOPOGRAPHY WITHIN 10 MILE RADIUS - WSWFIGURE 2.3-26TOPOGRAPHY WITHIN 10 MILE RADIUS - W FIGURE 2.3-27TOPOGRAPHY WITHIN 10 MILE RADIUS - WNWFIGURE 2.3-28TOPOGRAPHY WITHIN 10 MILE RADIUS - NWFIGURE 2.3-29TOPOGRAPHY WITHIN 10 MILE RADIUS FIGURE 2.4-1USGS HYDROLOGIC UNITS WITHIN THE TENNESSEE RIVER WATERSHEDFIGURE 2.4-2TVA WATER CONTROL SYSTEM FIGURE 2.4-3SEASONAL OPERATING CURVE, CHICKAMAUGA (SHEET 1 OF 12) 2-xxviiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-3SEASONAL OPERATING CURVE, WATTS BAR (SHEET 2 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, FORT LOUDOUN - TELLICO (SHEET 3 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, BOONE (SHEET 4 OF 12)

FIGURE 2.4-3SEASONAL OPERATING CURVE, CHEROKEE (SHEET 5 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, DOUGLAS (SHEET 6 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, FONTANA (SHEET 7 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, FORT PATRICK HENRY (SHEET 8 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, MELTON HILL (SHEET 9 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, NORRIS (SHEET 10 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, SOUTH HOLSTON (SHEET 11 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, WATAUGA (SHEET 12 OF 12)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, CHICKAMAUGA (SHEET 1 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, WATTS BAR (SHEET 2 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, FORT LOUDOUN (SHEET 3 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, TELLICO (SHEET 4 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, BOONE (SHEET 5 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, CHEROKEE (SHEET 6 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, DOUGLAS (SHEET 7 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, FONTANA (SHEET 8 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, FORT PATRICK HENRY (SHEET 9 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, MELTON HILL (SHEET 10 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, NORRIS (SHEET 11 OF 13)

List of Figures2-xxixWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, SOUTH HOLSTON (SHEET 12 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, WATAUGA (SHEET 13 OF 13)FIGURE 2.4-5TENNESSEE RIVER MILE 464.2 - DISTRIBUTION OF FLOODS AT CHATTANOOGA, TENNESSEEFIGURE 2.4-6PROBABLE MAXIMUM PRECIPITATION ISOHYETS FOR 21,400 SQ. MI. EVENT, DOWNSTREAM PLACEMENTFIGURE 2.4-7PROBABLE MAXIMUM PRECIPITATION ISOHYETS FOR 7980 SQ. MI. EVENT, CENTERED AT BULLS GAP, TNFIGURE 2.4-8RAINFALL TIME DISTRIBUTION - TYPICAL MASS CURVEFIGURE 2.4-9DRAINAGE AREAS ABOVE CHICKAMAUGA DAM FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 1-5 (SHEET 1 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 6-9 (SHEET 2 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 10-13 (SHEET 3 OF 11)

FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 14-18 (SHEET 4 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 19-22 (SHEET 5 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 23-27 (SHEET 6 OF 11)

FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 33, 34, 36 (SHEET 7 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 35, 37 (SHEET 8 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 38, 39, 41, 42 (SHEET 9 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 40, 43, 44A, 44B (SHEET 10 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREA 45 (SHEET 11 OF 11)FIGURE 2.4-11DISCHARGE RATING CURVE, CHICKAMAUGA DAM (SHEET 1 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, WATTS BAR DAM (SHEET 2 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, FORT LOUDOUN DAM (SHEET 3 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, TELLICO DAM (SHEET 4 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, BOONE DAM (SHEET 5 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, CHEROKEE DAM (SHEET 6 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, DOUGLAS DAM (SHEET 7 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, FONTANA DAM (SHEET 8 OF 13) 2-xxxList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-11DISCHARGE RATING CURVE, FORT PATRICK HENRY DAM (SHEET 9 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, MELTON HILL DAM (SHEET 10 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, NORRIS DAM (SHEET 11 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, SOUTH HOLSTON DAM (SHEET 12 OF 13)FIGURE 2.4-11DISCHARGE RATING CURVE, WATAUGA DAM (SHEET 13 OF 13)FIGURE 2.4-12FORT LOUDOUN - TELLICO SOCH UNSTEADY FLOW MODEL SCHEMATICFIGURE 2.4-13UNSTEADY FLOW MODEL FORT LOUDOUN RESERVOIR MARCH 1973 FLOOD (SHEET 1 OF 2)FIGURE 2.4-13UNSTEADY FLOW MODEL FORT LOUDOUN RESERVOIR MARCH 1973 FLOOD (SHEET 2 OF 2)FIGURE 2.4-14UNSTEADY FLOW MODEL FORT LOUDOUN - TELLICO RESERVOIR MAY 2003 FLOOD (SHEET 1 OF 3)FIGURE 2.4-14UNSTEADY FLOW MODEL FORT LOUDOUN - TELLICO RESERVOIR MAY 2003 FLOOD (SHEET 2 OF 3)FIGURE 2.4-14UNSTEADY FLOW MODEL FORT LOUDOUN - TELLICO RESERVOIR MAY 2003 FLOOD (SHEET 3 OF 3)FIGURE 2.4-15WATTS BAR SOCH UNSTEADY FLOW MODEL SCHEMATIC FIGURE 2.4-16UNSTEADY FLOW MODEL WATTS BAR RESERVOIR MARCH 1973 FLOODFIGURE 2.4-17UNSTEADY FLOW MODEL WATTS BAR RESERVOIR MAY 2003 FLOODFIGURE 2.4-18CHICKAMAUGA SOCH UNSTEADY FLOW MODEL SCHEMATICFIGURE 2.4-19UNSTEADY FLOW MODEL CHICKAMAUGA RESERVOIR MARCH 1973 FLOODFIGURE 2.4-20UNSTEADY FLOW MODEL CHICKAMAUGA RESERVOIR MAY 2003 FLOODFIGURE 2.4-21CHICKAMAUGA STEADY STATE PROFILE COMPARISONSFIGURE 2.4-22TAILWATER RATING CURVE, WATTS BAR DAMFIGURE 2.4-23PMF DISCHARGE HYDROGRAPH AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-24WEST SADDLE DIKE LOCATION PLAN AND SECTION List of Figures2-xxxiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-25PMF ELEVATION HYDROGRAPH AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-26PROBABLE MAXIMUM FLOOD AND BOTTOM PROFILES FIGURE 2.4-27MAIN PLANT GENERAL GRADING PLAN FIGURE 2.4-28WATTS BAR NUCLEAR PLANT WIND WAVE FETCHFIGURE 2.4-29EXTREME VALUE ANALYSIS 30-MINUTE WIND SPEED FROM THE SOUTHWEST CHATTANOOGA, TN 1948-74FIGURE 2.4-30THRU FIGURE 2.4-40 ARE NOT USEDFIGURE 2.4-40AMAIN PLANT SITE GRADING AND DRAINAGE SYSTEM FOR FLOOD STUDIES SHEET 1FIGURE 2.4-40ADELETED BY AMENDMENT 101FIGURE 2.4-40ADELETED BY AMENDMENT 101FIGURE 2.4-40BMAIN PLANT GENERAL PLANFIGURE 2.4-40CYARD SITE GRADING AND DRAINAGE SYSTEM FOR FLOOD STUDIESFIGURE 2.4-40D-1MAIN PLANT PLANT PERIMETER ROADS PLAN AND PROFILE SHEET 1FIGURE 2.4-40DMAIN PLANT PLANT PERIMETER ROADS PLAN AND PROFILE - SHEET 2FIGURE 2.4-40DMAIN PLANT PLANT PERIMETER ROADS PLAN AND PROFILE - SHEET 3FIGURE 2.4-40EACCESS HIGHWAY TVA DWG 1001H202 R4 - SHEET 1 FIGURE 2.4-40EACCESS HIGHWAY TVA DWG. 1001H201 R4 - SHEET 2FIGURE 2.4-40FMAIN PLANT MAIN PLANT TRACKS PLAN - SHEET 1FIGURE 2.4-40FMAIN PLANT MAIN PLANT TRACKS SECTIONS & PROFILES - SHEET 2FIGURE 2.4-40FMAIN PLANT MAIN PLANT TRACKS SECTIONS & PROFILES - SHEET 3FIGURE 2.4-40GYARD, GRADING DRAINAGE AND SURFACING TRANSFORMER & SWITCHYARD - SHEET 1FIGURE 2.4-40GYARD, GRADING DRAINAGE AND SURFACING TRANSFORMER & SWITCHYARD - SHEET 2FIGURE 2.4-40GYARD, GRADING DRAINAGE AND SURFACING TRANSFORMER & SWITCHYARD - SHEET 3FIGURE 2.4-40HPROBABLE MAXIMUM PRECIPATION POINT RAINFALLFIGURE 2.4-40IDELETED BY AMENDMENT 83 2-xxxiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-40JDELETED BY AMENDMENT 83FIGURE 2.4-40KDELETED BY AMENDMENT 83FIGURE 2.4-40LDELETED BY AMENDMENT 83FIGURE 2.4-41THRU FIGURE 2.4-60 ARE NOT USEDFIGURE 2.4-61DELETED BY AMENDMENT 108 FIGURE 2.4-62DELETED BY AMENDMENT 108FIGURE 2.4-63DELETED BY AMENDMENT 108FIGURE 2.4-64IS NOT USED FIGURE 2.4-65THRU FIGURE 2.4-67 ARE NOT USEDFIGURE 2.4-68POWERHOUSE & SPILLWAY RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - WATTS BAR DAMFIGURE 2.4-69DELETED BY AMENDMENT 108FIGURE 2.4-70DELETED BY AMENDMENT 83 FIGURE 2.4-71POWERHOUSE & SPILLWAY RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - FORT LOUDOUN DAMFIGURE 2.4-72EMBANKMENT RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - FORT LOUDOUN DAMFIGURE 2.4-73DELETED BY AMENDMENT 103FIGURE 2.4-74DELETED BY AMENDMENT 108FIGURE 2.4-75DELETED BY AMENDMENT 103 FIGURE 2.4-76ANALYSIS FOR OBE & 1/2 PMF ASSUMED CONDITION OF DAM AFTER FAILURE NORRIS DAMFIGURE 2.4-77SPILLWAY & NONOVERFLOW RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE -CHEROKEE DAMFIGURE 2.4-78EMBANKMENT RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - CHEROKEE DAMFIGURE 2.4-79ASSUMED CONDITION OF DAM AFTER FAILURE PBE AND 1/2 PROBABLE MAX FLOOD - CHEROKEE DAMFIGURE 2.4-80SPILLWAY & NONOVERFLOW RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - DOUGLAS DAMFIGURE 2.4-81SADDLE DAM NO. 1 RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - DOUGLAS DAMFIGURE 2.4-82DOUGLAS DAM ASSUMED CONDITION OF DAM AFTER FAILURE ABE AND 1/2 PROBABLE MAXIMUM FLOOD - DOUGLAS PROJECT List of Figures2-xxxiiiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-83FONTANA DAM ASSUMED CONDITION OF DAM AFTER FAILURE OBE AND 1/2 PROBABLE MAXIMUM FLOODFIGURE 2.4-84DELETED BY AMENDMENT 63 FIGURE 2.4-85DELETED BY AMENDMENT 63 FIGURE 2.4-86SPILLWAY RESULTS OF ANALYSIS FOR SSE EARTHQUAKE FORT LOUDOUN DAMFIGURE 2.4-87EMBANKMENT RESULTS OF ANALYSIS FOR SSE EARTHQUAKE FORT LOUDOUN DAMFIGURE 2.4-88FORT LOUDOUN DAM ASSUMED CONDITION OF DAM AFTER FAILURE SSE COMBINED WITH A 25 YEAR FLOOD - FORT LOUDOUN DAMFIGURE 2.4-89TELLICO DAM ASSUMED CONDITION OF DAM AFTER FAILURE SSE COMBINED WITH A 25 YEAR FLOOD TELLICO PROJECTFIGURE 2.4-90NORRIS DAM SSE + 25 YEAR FLOOD JUDGED CONDITION OF DAM AFTER FAILURE - NORRIS DAMFIGURE 2.4-91SSE WITH EPICENTER IN NORTH KNOXVILLE VICINITYFIGURE 2.4-92DELETED BY AMENDMENT 103 FIGURE 2.4-93SSE WITH EPICENTER IN WEST KNOXVILLE VICINITYFIGURE 2.4-94LOCATION OF SSE FOR SIMULTANEOUS FAILURE OF THE DOUGLAS AND FONTANA DAMSFIGURE 2.4-95DELETED BY AMENDMENT 103FIGURE 2.4-96DELETED BY AMENDMENT 103 FIGURE 2.4-97DELETED BY AMENDMENT 103FIGURE 2.4-98NOT USEDFIGURE 2.4-99GRADING PLAN INTAKE CHANNEL FIGURE 2.4-100DELETED BY AMENDMENT 83FIGURE 2.4-101DELETED BY AMENDMENT 33FIGURE 2.4-102WELLS AND SPRING INVENTORY WITHIN 2-MILE RADIUS OF WATTS BAR NUCLEAR PLANT SITEFIGURE 2.4-103WATER-LEVEL FLUCTUATIONS IN OBSERVATION WELLS AT THE WATTS BAR SITEFIGURE 2.4-104LOCATIONS OF GROUND - WATER OBSERVATION WELLSFIGURE 2.4-105GENERALIZED WATER-TABLE CONTOUR MAP JANUARY 1972 2-xxxivList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.4-106MECHANICAL - FLOW DIAGRAM FUEL POOL COOLING AND CLEANING SYSTEMFIGURE 2.4-107POWERHOUSE UNITS 1 & 2 FLOW DIAGRAM - RESIDUAL HEAT REMOVAL SYSTEMFIGURE 2.4-108SCHEMATIC FLOW DIAGRAM FLOOD PROTECTION PROVISIONS OPEN REACTOR COOLING (UNIT 1 SHOWN, UNIT 2 SIMILAR)FIGURE 2.4-109SCHEMATIC FLOW DIAGRAM FLOOD PROTECTION PROVISIONS NATURAL CONVECTION COOLING (UNIT 1 SHOWN, UNIT 2 SIMILAR)FIGURE 2.4-110 (SHEET 1)WATTS BAR NUCLEAR PLANT RAINFALL FLOOD WARNING TIME BASIS FOR SAFE SHUTDOWN FOR PLANT FLOODING - WINTER EVENTSFIGURE 2.4-110 (SHEET 2)WATTS BAR NUCLEAR PLANT RAINFALL FLOOD WARNING TIME BASIS FOR SAFE SHUTDOWN FOR PLANT FLOODING - SUMMER EVENTSFIGURE 2.4-111DELETED BY AMENDMENT 103FIGURE 2.4-112OBE WITH EPICENTER WITHIN AREA SHOWNFIGURE 2.4-113DELETED BY AMENDMENT 107FIGURE 2.4-114SSE FAILURE OF NORRIS, CHEROKEE, DOUGLAS, AND TELLICO DAMS WITH 25-YEAR FLOOD FAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-115OBE FAILURE OF NORRIS AND TELLICO DAMS WITH 1/2 PMF EVENTFAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-116OBE FAILURE OF CHEROKEE, DOUGLAS AND TELLICO DAMS WITH 1/2 PMF EVENTFAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 2.5-1REGIONAL PHYSIOGRAPHIC MAPFIGURE 2.5-2REGIONAL GEOLOGIC MAPFIGURE 2.5-3SUBREGIONAL GEOLOGIC SETTING (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-4REGIONAL TECTONIC MAP FIGURE 2.5-5REGIONAL BOUGUER GRAVITY ANOMALY MAP FIGURE 2.5-6REGIONAL MAGNETIC MAPFIGURE 2.5-7REGIONAL FAULT MAPFIGURE 2.5-8SUBREGIONAL FAULT MAP List of Figures2-xxxvWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-9GEOLOGIC MAP OF PLANT AREA (NORTH SEGMENT)FIGURE 2.5-10GEOLOGIC MAP OF PLANT AREA (SOUTH SEGMENT)

FIGURE 2.5-11GEOLOGIC SECTION THROUGH PLANT AREA (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-12CORE DRILL HOLE AND SEISMIC REFRACTION LOCATIONSFIGURE 2.5-13CORE DRILL LAYOUT AND SUMMARYFIGURE 2.5-14GRAPHIC LOG HOLE 1 STA. C-60+00 FIGURE 2.5-15GRAPHIC LOG HOLE 2 STA. C-64+00FIGURE 2.5-16GRAPHIC LOG HOLE 3 STA. C-68+00FIGURE 2.5-17GRAPHIC LOG HOLE 4 STA. E-60+00 FIGURE 2.5-18GRAPHIC LOG HOLE 5 STA. E-62+00FIGURE 2.5-19GRAPHIC LOG HOLE 6 STA. E-64+00FIGURE 2.5-20GRAPHIC LOG HOLE 7 STA. E-66+00 FIGURE 2.5-21GRAPHIC LOG HOLE 8 STA. E-88+40FIGURE 2.5-22GRAPHIC LOG HOLE 9 STA. G-60+00FIGURE 2.5-23GRAPHIC LOG HOLE 10 STA. G-62+00 FIGURE 2.5-24GRAPHIC LOG HOLE 11 STA. G-64+00FIGURE 2.5-25GRAPHIC LOG HOLE 12 STA. G-66+00FIGURE 2.5-26GRAPHIC LOG HOLE 13 STA. G-68+00 FIGURE 2.5-27GRAPHIC LOG HOLE 14 STA. J-60+00FIGURE 2.5-28GRAPHIC LOG HOLE 15 STA. J-62+00FIGURE 2.5-29GRAPHIC LOG HOLE 16 STA. J-64+00 FIGURE 2.5-30GRAPHIC LOG HOLE 17 STA. J-66+00FIGURE 2.5-31GRAPHIC LOG HOLE 18 STA. J-82+25FIGURE 2.5-32GRAPHIC LOG HOLE 19 STA. L-60+00 FIGURE 2.5-33GRAPHIC LOG HOLE 20 STA. L-6L+00FIGURE 2.5-34GRAPHIC LOG HOLE 21 STA. L-62+00FIGURE 2.5-35GRAPHIC LOG HOLE 22 STA. L-64+00 FIGURE 2.5-36GRAPHIC LOG HOLE 23 STA. L-66+00 FIGURE 2.5-37GRAPHIC LOG HOLD 24 STA. L-68+00FIGURE 2.5-38GRAPHIC LOG HOLE M-59+00FIGURE 2.5-39GRAPHIC LOG HOLE 26M-60+00 FIGURE 2.5-40GRAPHIC LOG HOLE 27 STA. M-6L+00 2-xxxviList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-41GRAPHIC LOG HOLE 28 STA.M-62+00FIGURE 2.5-42GRAPHIC LOG HOLE 29 STA. M-63+00 FIGURE 2.5-43GRAPHIC LOG HOLE 30 STA. M-64+00FIGURE 2.5-44GRAPHIC LOG HOLE 31 STA. M-65+00FIGURE 2.5-45GRAPHIC LOG HOLE 32 STA. M-66+00 FIGURE 2.5-46GRAPHIC LOG HOLE 33 STA. N-59+00FIGURE 2.5-47GRAPHIC LOG HOLE 34 STA. N-60+00FIGURE 2.5-48GRAPHIC LOG HOLE 35 STA. N-6L+00 FIGURE 2.5-49GRAPHIC LOG HOLE 36 STA. N-62+00FIGURE 2.5-50GRAPHIC LOG HOLE 37 STA. N-63+00FIGURE 2.5-51GRAPHIC LOG HOLE 38 STA. N-64+00 FIGURE 2.5-52GRAPHIC LOG HOLE 39 STA. N-65+00FIGURE 2.5-53GRAPHIC LOG HOLE 40 STA. N-66+00FIGURE 2.5-54GRAPHIC LOG HOLE 41 STA. 0-60+00 FIGURE 2.5-55GRAPHIC LOG HOLE 42 STA. 0-61+00FIGURE 2.5-56GRAPHIC LOG HOLE 43 STA. 0-62+00FIGURE 2.5-57GRAPHIC LOG HOLE 44 STA. 0-63+00 FIGURE 2.5-58GRAPHIC LOG HOLE 45 STA. 0-64+00FIGURE 2.5-59GRAPHIC LOG HOLE 46 STA. 0-65+00FIGURE 2.5-60GRAPHIC LOG HOLE 47 STA. 0-66+00 FIGURE 2.5-61GRAPHIC LOG HOLE 48 STA. P-60+00FIGURE 2.5-62GRAPHIC LOG HOLE 49 STA. P-62+00 (SHEET 1 OF 4)FIGURE 2.5-63GRAPHIC LOG HOLE 50 STA. P-63+00 FIGURE 2.5-64GRAPHIC LOG HOLE 51 STA. P-64+00FIGURE 2.5-65GRAPHIC LOG HOLE 52 STA. P-65+00FIGURE 2.5-66GRAPHIC LOG HOLE 53 STA. P-66+00 FIGURE 2.5-67GRAPHIC LOG HOLE 54 STA. P-68+00FIGURE 2.5-68GRAPHIC LOG HOLE 55 STA. R-62+00FIGURE 2.5-69GRAPHIC LOG HOLE 56 STA. R-64+00 FIGURE 2.5-70SPECIAL STUDIES LAYOUT AND SUMMARY FIGURE 2.5-71(PLEASE SEE FIGURES DVD FOR ACTUAL FIGURE)FIGURE 2.5-723-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 32.0 - 46.5 List of Figures2-xxxviiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-733-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 47.0 - 61.5FIGURE 2.5-743-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 62.0 - 76.5FIGURE 2.5-753-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 77.0 - 91.5FIGURE 2.5-763-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 92.0 - 106.5FIGURE 2.5-773-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 107.0 - 121.5FIGURE 2.5-783-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 122.0 - 136.5FIGURE 2.5-793-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 137.0 - 151.5FIGURE 2.5-803-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 152.0 - 166.5FIGURE 2.5-813-D ELASTIC PROPERTIES TABULATION STA. L-61+00 DEPTH 167.0 - 176.0FIGURE 2.5-82GRAPHIC LOG AND ELASTIC MODULI STA. M-63+00FIGURE 2.5-833-D ELASTIC PROPERTIES TABULATION STA. M-63+00 DEPTH 44.0 - 58.5FIGURE 2.5-843-D ELASTIC PROPERTIES TABULATION STA. M-63+00 DEPTH 59.0 - 73.5FIGURE 2.5-853-D ELASTIC PROPERTIES TABULATION STA. M-63+00 DEPTH 74.0 - 88.5FIGURE 2.5-863-D ELASTIC PROPERTIES TABULATION STA. M-63+00 DEPTH 89.0 - 90.0FIGURE 2.5-87GRAPHIC LOG AND ELASTIC MODULI STA. N-6L+00FIGURE 2.5-883-D ELASTIC PROPERTIES TABULATION STA. N-61+00 DEPTH 35.0 - 49.5FIGURE 2.5-893-D ELASTIC PROPERTIES TABULATION STA. N-61+00 DEPTH 50.0 - 64.5FIGURE 2.5-903-D ELASTIC PROPERTIES TABULATION STA. N-61+00 DEPTH 65.0 - 79.5FIGURE 2.5-913-D ELASTIC PROPERTIES TABULATION STA. N-61+00 DEPTH 80.0 - 92.0FIGURE 2.5-92GRAPHIC LOG AND ELASTIC MODULA STA. N-62+00 2-xxxviiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-933-D ELASTIC PROPERTIES TABULATION STA. N-62+00 DEPTH 45.0 - 59.5FIGURE 2.5-943-D ELASTIC PROPERTIES TABULATION STA. N-62+00 DEPTH 60.0 - 70.0FIGURE 2.5-95GRAPHIC LOG AND ELASTIC MODULI STA. 0-60+00FIGURE 2.5-963-D ELASTIC PROPERTIES TABULATION STA. 0-60+00 DEPTH 38.0 - 52.5FIGURE 2.5-973-D ELASTIC PROPERTIES TABULATION STA. 0-60+00 DEPTH 53.0 -67.5FIGURE 2.5-983-D ELASTIC PROPERTIES TABULATION STA. 0-60+00 DEPTH 68.0 - 80.0FIGURE 2.5-99GRAPHIC LOG AND ELASTIC MODULI STA. 0-61+00FIGURE 2.5-1003-D ELASTIC PROPERTIES TABULATION STA. 0-61+00 DEPTH 37.0 - 51.5FIGURE 2.5-1013-D ELASTIC PROPERTIES TABULATION STA. 0-61+00 DEPTH 52.0 - 66.5FIGURE 2.5-1023-D ELASTIC PROPERTIES TABULATION STA. 0-61+00 DEPTH 67.0 - 81.5FIGURE 2.5-1033-D ELASTIC PROPERTIES TABULATION STA. 0-61+00 DEPTH 82.0 - 92.0FIGURE 2.5-104GRAPHIC LOG AND ELASTIC MODULI STA. 0-62+00FIGURE 2.5-1053-D ELASTIC PROPERTIES TABULATION STA. 0-62+00 DEPTH 43.0 - 57.5FIGURE 2.5-1063-D ELASTIC PROPERTIES TABULATION STA. 0-62+00 DEPTH 58.0 - 72.5FIGURE 2.5-1073-D ELASTIC PROPERTIES TABULATION STA. 0-62+00 DEPTH 73.0 - 87.5FIGURE 2.5-1083-D ELASTIC PROPERTIES TABULATION STA. 0-62+00 DEPTH 88.0 - 101.0FIGURE 2.5-109CROSS-HOLE DYNAMIC SECTIONS AND SUMMARYFIGURE 2.5-110PLAN VIEW GEOLOGIC MAP OF REACTOR, AUXILIARY AND CONTROL BUILDINGSFIGURE 2.5-111PLAN VIEW GEOLOGIC MAP OF TURBINE BUILDINGFIGURE 2.5-112GEOLOGIC SECTION ALONG A+8 AND A+14 LINES FROM T6 TO T11FIGURE 2.5-113GEOLOGIC SECTION ALONG N LINE FROM CL TO C13FIGURE 2.5-114SECTION ALONG A4+9.5 FROM T+3.5 TO W+12.5 List of Figures2-xxxixWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-115GEOLOGIC SECTION AND PANORAMIC PHOTOGRAPH Q-4 LINE FROM A4-3 TO A12+3FIGURE 2.5-116GEOLOGIC SECTIONS AUXILIARY AND TURBINE BUILDINGSFIGURE 2.5-117GEOLOGIC SECTIONS AND PANORAMIC PHOTOGRAPHS (UNIT 2)FIGURE 2.5-118GEOLOGIC SECTIONS AND PANORAMIC PHOTOGRAPHS (UNIT 1)FIGURE 2.5-119GEOLOGIC SECTIONS AND PANORAMIC PHOTOGRAPHS OF REACTOR 2 EAST PERIMETER WALLFIGURE 2.5-120GEOLOGIC SECTION AND PANORAMIC PHOTOGRAPH OF REACTOR 1 WEST PERIMETER WALLFIGURE 2.5-121GEOLOGIC PLAN AND SECTIONS INTAKE STRUCTURE FOUNDATIONFIGURE 2.5-122GENERALIZED GEOLOGIC SECTION AND SOIL PROFILEFIGURE 2.5-123FAULT SHOWN CUTTING ACROSS AUXILIARY BUILDING AT A4+28 FEET AND EAST-WEST REACTOR CENTERLINE, THROUGH SE PERIMETER OF REACTOR #1, AND INTO AUXILIARY BUILDING WEST WALL NEAR U LINE. VIEWED SOUTHWEST.FIGURE 2.5-124FAULT IN AUXILIARY BUILDING WALL, APPROXIMATELY 9 FEET WEST OF A5 AND 6 FEET SOUTH OF EAST-WEST REACTOR CENTERLINE. FAULT CONTINUES ACROSS SE PERIMETER OF REACTOR #1. VIEWED SOUTHWEST.FIGURE 2.5-125MINOR THRUST FAULT AND ASSOCIATED ONE-EIGHTH INCH CLAY SEAM LOCATED IN EAST FOUNDATION CUT AT Q LINE AND C13+L2 FEET. VIEWED EAST.FIGURE 2.5-126CLOSEUP OF REACTOR #1 NORMAL FAULT AT 72 DEGREES. VIEWED WEST.FIGURE 2.5-127CLOSEUP OF FAULT IN REACTOR #1 CAVITY WEST WALL BETWEEN ELEVATIONS OF 678.5 AND 690.0 FEET. VIEWED WEST. SCALE: 1 INCH = 0.56 FEET.FIGURE 2.5-128FAULT IN AUXILIARY BUILDING AT ALL AND EAST-WEST REACTOR CENTERLINE. FAULT CONTINUES NE THROUGH NW PERIMETER OF REACTOR #2 BUILDING. VIEWED NORTHEAST.FIGURE 2.5-129GRAVITY OR NORMAL FAULT ON NORTHEAST REACTOR #1 PERIMETER AT 233 DEGREES. FAULT PLANE DIPS NORTH AT 40 DEGREES. VIEWED WEST.

2-xlList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-130FAULT IN REACTOR #2 EAST WALL AT APPROXIMATELY 130 DEGREES. VIEWED EAST.FIGURE 2.5-131FAULT IN REACTOR #2 CAVITY WALL AT APPROXIMATELY 354 DEGREES. ELEVATION 680.0 AT BASE. VIEWED SOUTHWEST.FIGURE 2.5-132FAULT IN SOUTH WALL OF DISCHARGE CHANNEL SHOWING TRUNCATION BY OVERLYING TERRACE GRAVEL DEPOSIT.FIGURE 2.5-133FAULT IN NORTH WALL OF DISCHARGE CHANNEL SHOWING TRUNCATION BY TERRACE GRAVEL DEPOSIT.FIGURE 2.5-134FAULT TRUNCATION BY TERRACE GRAVEL DEPOSIT AT 20 FEET EAST OF A8 AND 18.50 FEET NORTH OF Y. ELEVATION AT BENCH CUT IS 706.35. VIEWED NORTH.FIGURE 2.5-135FAULT IN VERTICAL EXCAVATION CUT AT 20 FEET EAST OF A8 AND 18.50 FEET NORTH OF Y. VIEWED NORTH.FIGURE 2.5-136INSET AREA. BLUE-GREY CLAY SEAM ALONG FAULT TRACE WHERE TRUNCATED BY TERRACE GRAVEL DEPOSIT. LOCATION: 20 FEET EAST OF A8 AND 18.50 FEET NORTH OF Y. VIEWED NORTH.FIGURE 2.5-137SAPROLITE - TERRACE GRAVEL CONTACT. HEMATITIC CRUSTS ARE SEEN TO BE DISPERSED AT SEVERAL LEVELS IN THE TERRACE GRAVEL. VIEWED SOUTH IN THE EXHAUST CUT APPROXIMATELY 150 FEET EAST OF THE POWERHOUSE FOUNDATION.FIGURE 2.5-138SITE OF WOOD SPECIMEN COLLECTION FOR CARBON 14 AGE DATING. LOCATION IS 3 FEET ABOVE TERRACE GRAVEL DEPOSIT. SCALE: OPENED BRUNTON COMPASS = 8.5 INCHES. LOCATION: APPROXIMATELY 18.51 NORTH OF Y AT A5 LINE. APPROXIMATE ELEVATION 717.5.FIGURE 2.5-139LAYOUT DIAGRAM FOR HORIZONTAL AND ANGLE HOLESFIGURE 2.5-140PLANE INTERSECTING DISINTEGRATED SHALE POCKETFIGURE 2.5-141PLANE VIEW ONTO THE 673 ELEVATION FIGURE 2.5-142PLANE VIEW ONTO THE 671 ELEVATIONFIGURE 2.5-143DRILL LAYOUT DIAGRAM FOR VERTICAL HOLES VIEWED ONTO THE 671 ELEVATIONFIGURE 2.5-144REACTOR 2 GROUT LAYOUTFIGURE 2.5-145EARTHQUAKE EPICENTERSFIGURE 2.5-146MAJOR EARTHQUAKE IN UNITED STATES THROUGH 1972 List of Figures2-xliWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-147ISOSEISMAL MAP MAXIMUM EFFECTS 1811-1812 NEW MADRID EARTHQUAKEFIGURE 2.5-148ISOSEISMAL MAP 1811 NEW MADRID EARTHQUAKEFIGURE 2.5-149FELT AREA MAPS FIGURE 2.5-150ISOSEISMAL MAP 1886 CHARLESTON, S.C. EARTHQUAKEFIGURE 2.5-151FELT AREA MAP EAST TENNESSEE EARTHQUAKE OF APRIL 17, 1913FIGURE 2.5-152ISOSEISMAL MAP 1916 SOUTHERN APPALACHIAN EARTHQUAKEFIGURE 2.5-153ISOSEISMAL MAP 1916 ALABAMA EARTHQUAKEFIGURE 2.5-154ISOSEISMAL MAP 1924 SOUTHERN APPALACHIAN EARTHQUAKEFIGURE 2.5-155FELT AREA MAP 1940 CHATTANOOGA EARTHQUAKEFIGURE 2.5-156ISOSEISMAL MAP 1968 SOUTHERN ILLINOIS EARTHQUAKEFIGURE 2.5-157FELT AREA MAP EAST TENNESSEE EARTHQUAKE JULY 13, 1969FIGURE 2.5-158ISOSEISMAL MAP ELSGOOD, WEST VIRGINIA EARTHQUAKE (NOVEMBER 20, 1969)FIGURE 2.5-159ISOSEISMAL MAP MARYVILLE-ALCOA EARTHQUAKE NOVEMBER 30, 1973FIGURE 2.5-160SEISMIC REFLECTION PROFILEFIGURE 2.5-161INDEX MAP - ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-162EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-163EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-164EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-165EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-166EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-167EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-168EARTHQUAKE LISTING ALL EARTHQUAKES LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WEST 2-xliiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-169INDEX MAP -EARTHQUAKES 4.3 RICHTER OR GREATER LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-170EARTHQUAKE LISTING 4.3 RICHTER OR GREATER LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-171EARTHQUAKE LISTING 4.3 RICHTER OR GREATER LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-172EARTHQUAKE LISTING 4.3 RICHTER OR GREATER LATITUDE 32.5-38.5 NORTH LONGITUDE 80.5-89.0 WESTFIGURE 2.5-173INDEX MAP -EARTHQUAKES 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-174EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-175EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-176EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-177EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-178EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-179EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-180EARTHQUAKES LISTING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-181INDEX MAP -EARTHQUAKES 6.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-182EARTHQUAKES LISTING 6.3 RICHTER OR GREATER LATITUDE 30-37 LONGITUDE 78-92 WESTFIGURE 2.5-183EARTHQUAKE LISTING LIST OF REFERENCESFIGURE 2.5-184EARTHQUAKE LISTING NOTES FIGURE 2.5-185YARD SOIL BORINGS LOCATION PLAN FIGURE 2.5-185AYARD SOIL BORINGS LOCATION PLANFIGURE 2.5-186TRANSFORMER YARD & SWITCHYARD SOIL INVESTIGATIONFIGURE 2.5-187COOLING TOWERS SOIL INVESTIGATIONFIGURE 2.5-188PUMPING STATION FOUNDATION INVESTIGATIONFIGURE 2.5-189OFFICE & SERVICE BUILDING FOUNDATION INVESTIGATION List of Figures2-xliiiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-190DIESEL GENERATOR BUILDING SECTIONS AA & BB FOUNDATION INVESTIGATIONFIGURE 2.5-191ESSENTIAL COOLING WATER SUPPLY SOIL INVESTIGATIONFIGURE 2.5-192INTAKE CHANNEL, SECTION DD FOUNDATION INVESTIGATIONFIGURE 2.5-193INTAKE CHANNEL, SECTION EE FOUNDATION INVESTIGATIONFIGURE 2.5-194INTAKE CHANNEL, SECTION CC FOUNDATION INVESTIGATIONFIGURE 2.5-195INTAKE CHANNEL, SECTION FF FOUNDATION INVESTIGATIONFIGURE 2.5-196CLASS IE CONDUITS SOIL INVESTIGATIONFIGURE 2.5-197CLASS IE CONDUITS SOIL INVESTIGATIONFIGURE 2.5-198SOIL INVESTIGATION BORINGS FOR ERCW & HPFP SYSTEMSFIGURE 2.5-199SOIL INVESTIGATION BORINGS FOR ERCW & HPFP SYSTEMSFIGURE 2.5-200SOIL INVESTIGATION BORINGS FOR ERCW & HPFP SYSTEMSFIGURE 2.5-201SOIL INVESTIGATION BORINGS FOR ERCW & HPFP SYSTEMSFIGURE 2.5-202SOIL INVESTIGATION BORINGS FOR ERCW & HPFP SYSTEMSFIGURE 2.5-203INTAKE CHANNEL TRENCHFIGURE 2.5-204INTAKE CHANNEL TEST 1FIGURE 2.5-205INTAKE CHANNEL STRENGTH EVALUATION TEST 2 FIGURE 2.5-206CLASS IE CONDUIT ALIGNMENT Q (UNCONSOLIDATED, UNDRAINED, UNDISTURBED) SAMPLES.FIGURE 2.5-207ERCW PIPING AND IE CONDUIT ALIGNMENTS R (CONSOLIDATED - UNDRAINED) SILT AND CLAY SAMPLES NATURAL MOISTURE CONTENTFIGURE 2.5-208CLASS IE CONDUIT ALIGNMENT S-DIRECT SHEARFIGURE 2.5-209TYPE 1-SOFT SHALE TYPE 2-HARD SHALE -TYPE 3 LIMESTONEFIGURE 2.5-210LOCATION OF TEST HOLES FIGURE 2.5-211DEFORMATION MODULI FROM MENARD PRESSUREMETER TESTSFIGURE 2.5-212COMPARISON OF MODULI OBTAINED WITH MENARD PRESSUREMETER AND BIRDWELL 3D SONIC LOGGER 2-xlivList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-213INFLUENCE FACTORS FOR DETERMINING STRESSES BELOW THE CENTER OF FLEXIBLE CIRCULAR FOOTING 10, 50, 100, AND 200 FT. IN DIAMETERFIGURE 2.5-214EIA FOR HOLES TESTED WITH MENARD PRESSUREMETERFIGURE 2.5-215SETTLEMENT AT CENTER OF FLEXIBLE CIRCULAR FOOTING LOADED WITH SKSFFIGURE 2.5-216CORRELATION USED TO ESTIMATE AVERAGE MODULI FOR HOLES WHERE DETAILED CALCULATIONS WERE NOT MADE.FIGURE 2.5-217DISTRIBUTION OF DEFORMATION MODULI FOR 10 FOOT DIAMETER FOOTINGSFIGURE 2.5-218SIMPLIFIED PLAN OF LOCK FOUNDATION SHOWING LOCATION OF MODULUS CALCULATIONSFIGURE 2.5-219SETTLEMENT OF FACE OF BLOCK R-10 (POINT F, FIG. 16)FIGURE 2.5-220YARD SOIL INVESTIGATIONS BORROW SOILSFIGURE 2.5-221YARD SOIL INVESTIGATIONS BORROW SOILSFIGURE 2.5-221AYARD SOIL INVESTIGATIONS BORROW SOILSFIGURE 2.5-222BORROW INVESTIGATION (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-223ADDITIONAL BORROW EXPLORATIONFIGURE 2.5-224ADDITIONAL BORROW AREA 4 FIGURE 2.5-225MAIN PLANT EXCAVATION & BACKFILL CATEGORY I STRUCTURESFIGURE 2.5-226MAIN PLANT EXCAVATION & BACKFILL CATEGORY I STRUCTURESFIGURE 2.5-226AEXCAVATION AND BACKFILL CATEGORY I STRUCTURESFIGURE 2.5-227TYPICAL IN-SITU SOIL DYNAMICS MEASUREMENTS LAYOUT & SECTIONFIGURE 2.5-228SOIL DYNAMICS INTAKE CHANNEL STATION 13 + 26E, 21 + L2SFIGURE 2.5-229SOIL DYNAMICS INTAKE CHANNEL STATION 14 + 27E, 24 + L2SFIGURE 2.5-230SOIL DYNAMICS INTAKE CHANNEL STATION 12 + 67E, 25 + 32SFIGURE 2.5-231SOIL DYNAMICS INTAKE CHANNEL STATION 10 + 07E, 23 + 53S List of Figures2-xlvWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-232SEISMIC REFRACTION DYNAMIC PROPERTIES INTAKE CHANNELFIGURE 2.5-233SOIL DYNAMICS DIESEL GENERATOR BUILDING DOWN HOLE SEISMIC 8 REFRACTION MEASUREMENTFIGURE 2.5-233ACLASS A BACKFILL -SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233BCLASS A BACKFILL -DAMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233CCRUSHED STONE BACKFILL - SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233DCRUSHED STONE BACKFILL - DAMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233EIN SITU COHESIVE SOILS - SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233FIN SITU COHESIVE SOILS - DAMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233GNON-PLASTIC IN SITU SOIL - SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233HNON-PLASTIC IN SITU SOILS - DAMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233IBASAL GRAVEL - SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233JBASAL GRAVEL - DAMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233KWEATHERED SHALE - SHEAR MODULUS AND DAMPING VARIATION WITH SHEAR STRAINFIGURE 2.5-234MAIN PLANT BORROW AREAS, MOISTURE - PENETRATION TESTFIGURE 2.5-235COMPACTION TEST BORROW AREAS (FAMILY OF CURVES)FIGURE 2.5-236AOPERATING BASIS EARTHQUAKE RESPONSE SPECTRA FOR ROCK SUPPORT STRUCTURESFIGURE 2.5-236BSAFE SHUTDOWN EARTHQUAKE RESPONSE SPECTRA FOR ROCK SUPPORT STRUCTURESFIGURE 2.5-237INTAKE CHANNEL SEISMIC STABILITY ANALYSISFIGURE 2.5-238STATIC DESIGN CASE 2 FIGURE 2.5-239INTAKE CHANNEL-LATERAL EXCAVATION & REPLACEMENT 2-xlviList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-240WEDGE USED TO DETERMINE HORIZONTAL DISPLACEMENT OF THE INTAKE CHANNEL BY NEWMARK'S METHODFIGURE 2.5-241ERCW PIPING ALIGNMENT Q (UNCONSOLIDATED UNDRAINED - UNDISTURBED SAMPLES)FIGURE 2.5-242ERCW PIPING ALIGNMENT S (DIRECT SHEAR) UNDISTURBED SAMPLESFIGURE 2.5-243DELETED BY AMENDMENT 71FIGURE 2.5-244BORROW AREA 4 Q - (UNCONSOLIDATED - UNDRAINED) 95% STD PROCTOR DENSITY 3% ABOVE OPTIMUM MOISTURE REMOLDED SAMPLESFIGURE 2.5-245WATTS BAR NUCLEAR PLANT BORROW AREA 4R - (CONSOLIDATE UNDRAINED) 95% STD PROCTOR DENSITY 3% BELOW OPTIMUM MOISTURE REMOLDED SAMPLESFIGURE 2.5-246BORROW AREA 4 S -(DIRECT SHEAR) 95% STD PROCTOR DENSITY 3% BELOW OPTIMUM MOISTURE REMOLDED SAMPLESFIGURE 2.5-247INTAKE CHANNEL Q - (UNCONSOLIDATED - UNDRAINED - UNDISTURBED SAMPLES) SILTY SANDSFIGURE 2.5-248INTAKE CHANNEL Q - (UNCONSOLIDATED-UNDRAINED) UNDISTURDED SAMPLES LEAN CLAYSFIGURE 2.5-249INTAKE CHANNEL R - (CONSOLIDATED-UNDRAINED) UNDISTURBED SAMPLES SILTY SANDSFIGURE 2.5-250INTAKE CHANNEL R - (CONSOLIDATED-UNDRAINED) - UNDISTURBED SAMPLES LEAN CLAYSFIGURE 2.5-251INTAKE CHANNEL Q - (UNCONSOLIDATED UNDRAINED) REMOLDED SAMPLES 95% SDT PROCTOR DENSITY 4% ABOVE OPTIMUM MOISTUREFIGURE 2.5-252SITE STUDIES INTAKE CHANNEL ADDITIONAL SOILS INVESTIGATIONFIGURE 2.5-253INTAKE CHANNEL ADDITIONAL SOIL INVESTIGATION SECTION AAFIGURE 2.5-254INTAKE CHANNEL ADDITIONAL SOIL INVESTIGATION SECTION BBFIGURE 2.5-255INTAKE CHANNEL ADDITIONAL SOIL INVESTIGATION SECTION CCFIGURE 2.5-256INTAKE CHANNEL - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM SIDE OF INTAKE CHANNEL WITH BEDROCK AT 656 List of Figures2-xlviiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-257INTAKE CHANNEL - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM SIDE OF INTAKE CHANNEL WITH BEDROCK AT 650FIGURE 2.5-258INTAKE CHANNEL - LATERAL EXCAVATION AND REPLACEMENT UPSTREAM RESERVOIR END WITH ROCKFILL PLACED AT 665FIGURE 2.5-259INTAKE CHANNEL - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM RESERVOIR END WITH ROCKFILL PLACED AT EL. 650FIGURE 2.5-260SOIL PROFILE - BORROW AREA 7, BORING PAH-1FIGURE 2.5-261SOIL PROFILE - BORROW AREA 7, BORING PAH-2FIGURE 2.5-262SOIL PROFILE - BORROW AREA 7, BORING PAH-3FIGURE 2.5-263SOIL PROFILE - BORROW AREA 7, BORING PAH-4FIGURE 2.5-264SOIL PROFILE - BORROW AREA 7, BORING PAH-5FIGURE 2.5-265SOIL PROFILE - BORROW AREA 7, BORING PAH-6FIGURE 2.5-266SOIL PROFILE - BORROW AREA 7, BORING PAH-7FIGURE 2.5-267SOIL PROFILE - BORROW AREA 7, BORING PAH-8FIGURE 2.5-268SOIL PROFILE - BORROW AREA 7, BORING PAH-9 (SS, PA, HA, TP, BORING)FIGURE 2.5-269SOIL PROFILE - BORROW AREA 7, BORING PAH-10FIGURE 2.5-270SOIL PROFILE - BORROW AREA 7, BORING PAH-11FIGURE 2.5-271COMPACTION TEST (FAMILY OF CURVES) - BORROW AREA 7FIGURE 2.5-272MOISTURE - PENETRATION TEST - BORROW AREA 7FIGURE 2.5-273YARD CATEGORY I ERCW PIPING AND CONDUITS PLANFIGURE 2.5-274SOIL PROFILE (SS, PA, HA, TP, BORING) 1E CONDUIT BANKSFIGURE 2.5-275SOIL PROFILE (SS, PA, HA, TP, BORING) 1E CONDUIT BANKSFIGURE 2.5-276SOIL PROFILE (SS, PA, HA, TP, BORING) IE CONDUIT BANKS SHEET 1 OF 2FIGURE 2.5-276SOIL PROFILE (SS, PA, HA, TP, BORING) ID CONDUIT BANKS SHEET 2 OF 2FIGURE 2.5-277SOIL PROFILE (SS, PA, HA, TP, BORING) ID CONDUIT BANKSFIGURE 2.5-278SOIL PROFILE (SS, PA, HA, TP, BORING) ID CONDUIT BANKSFIGURE 2.5-279SOIL PROFILE (SS, PA, HA, TP, BORING) ID CONDUIT BANKSFIGURE 2.5-280SOIL PROFILE (SS, PA, HA, TP, BORING) ID CONDUIT BANKS 2-xlviiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-281(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 1 OF 2)FIGURE 2.5-281(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 2 OF 2)FIGURE 2.5-282SOIL PROFILEFIGURE 2.5-283SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-283SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-284SOIL PROFILEFIGURE 2.5-285SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-285SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-286SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-286SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-287SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-287SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-288SOIL PROFILE FIGURE 2.5-289SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-289SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-290SOIL PROFILE FIGURE 2.5-291SOIL PROFILEFIGURE 2.5-292SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-292SOIL PROFILE (SHEET 2 OF 2 FIGURE 2.5-293SOIL PROFILEFIGURE 2.5-294SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-294SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-295SOIL PROFILEFIGURE 2.5-296SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-296SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-297SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-297SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-298SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-298SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-299SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-299SOIL PROFILE (SHEET 2 OF 2)

List of Figures2-xlixWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-300SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-300SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-301SOIL PROFILEFIGURE 2.5-302SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-302SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-303SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-303SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-304SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-304SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-305SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-305SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-306SOIL PROFILEFIGURE 2.5-307SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-307SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-308SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-308SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-309SOIL PROFILE FIGURE 2.5-310SOIL PROFILEFIGURE 2.5-311SOIL PROFILEFIGURE 2.5-312SOIL PROFILE FIGURE 2.5-313SOIL PROFILEFIGURE 2.5-314SOIL PROFILEFIGURE 2.5-315SOIL PROFILE FIGURE 2.5-316SOIL PROFILE (SHEET 1 OF 1)FIGURE 2.5-317SOIL PROFILEFIGURE 2.5-318SOIL PROFILE FIGURE 2.5-319SOIL PROFILEFIGURE 2.5-320SOIL PROFILEFIGURE 2.5-321SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-321SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-322SOIL PROFILEFIGURE 2.5-323SOIL PROFILEFIGURE 2.5-324SOIL PROFILE 2-lList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-325SOIL PROFILEFIGURE 2.5-326SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-326SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-327SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-327SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-328SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-328SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-329SOIL PROFILE FIGURE 2.5-330SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-330SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-331BLANK PAGE FIGURE 2.5-332SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-332SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-333SOIL PROFILE (SHEET 1OF 2)

FIGURE 2.5-333SOIL PROFILE (SHEET 2OF 2)FIGURE 2.5-334SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-334SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-335SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-335SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-336SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-336SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-337SOIL PROFILEFIGURE 2.5-338SOIL PROFILE FIGURE 2.5-339ERCW ROUTE LIQUEFACTION EVALUATION GRAPHIC LOGS NO. 50 & 65FIGURE 2.5-340ERCW LIQUEFACTIONFIGURE 2.5-341ERCW LIQUEFACTIONFIGURE 2.5-342LIQUEFACTION FIGURE 2.5-343LIQUEFACTION FIGURE 2.5-344LIQUEFACTIONFIGURE 2.5-345LIQUEFACTIONFIGURE 2.5-346LIQUEFACTION FIGURE 2.5-347LIQUEFACTION List of Figures2-liWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-348LIQUEFACTIONFIGURE 2.5-349LIQUEFACTION FIGURE 2.5-350LIQUEFACTIONFIGURE 2.5-351LIQUEFACTIONFIGURE 2.5-352LIQUEFACTION FIGURE 2.5-353RESULTS OF STRESS CONTROLLED CYCLIC TRIAXIAL TESTS ON ERCW ROUTE SOILSFIGURE 2.5-354LIQUEFACTION STUDY ERCW PIPELINEFIGURE 2.5-355LIQUEFACTION STUDY ERCW PIPELINEFIGURE 2.5-356LIQUEFACTION STUDY ERCW PIPELINE FIGURE 2.5-357LIQUEFACTION STUDY ERCW PIPELINEFIGURE 2.5-358ADDITIONAL SOIL INVESTIGATIONS CATEGORY I SOIL SUPPORTED STRUCTURESFIGURE 2.5-359CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-360CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-361CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-362CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-363CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-364CATEGORY I SOIL SUPPORTED STRUCTURES SOIL INVESTIGATIONFIGURE 2.5-365CATEGORY I SUPPORTED STRUCTURES S-DIRECT SHEAR TEST REMOLDED BASAL GRAVELFIGURE 2.5-366SOIL SUPPORTED STRUCTURESFIGURE 2.5-367SOIL SUPPORTED STRUCTURES FIGURE 2.5-368SOIL SUPPORTED STRUCTURES FIGURE 2.5-369SOIL SUPPORTED STRUCTURESFIGURE 2.5-370SOIL SUPPORTED STRUCTURESFIGURE 2.5-371SOIL SUPPORTED STRUCTURES FIGURE 2.5-372GRAVEL BORING NO. 125FIGURE 2.5-373GRAVEL BORING NO. 129 2-liiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-374WATTS BAR NUCLEAR PLANT CATEGORY I SOIL SUPPORTED STRUCTURES Q - ( UNCONSOLIDATED - UNDRAINED)TEST FINE GRAINED SOILS (UNDISTURBED SAMPLES)FIGURE 2.5-375WATTS BAR NUCLEAR PLANT CATEGORY I SOIL SUPPORTED STRUCTURES R (TOTAL) - ( CONSOLIDATED - UNDRAINED)

TEST FINE GRAINED SOILS (UNDISTURBED SAMPLES)FIGURE 2.5-376WATTS BAR NUCLEAR PLANT CATEGORY I SOIL SUPPORTED STRUCTURE R (EFFECTIVE) - (CONSOLIDATED -UNDRAINED) TEST FINE GRAINED SOILS (UNDISTURBED SAMPLES)FIGURE 2.5-377SOIL PROFILEFIGURE 2.5-378SOIL PROFILEFIGURE 2.5-379SOIL PROFILE FIGURE 2.5-380SOIL PROFILEFIGURE 2.5-381SOIL PROFILEFIGURE 2.5-382SOIL PROFILE FIGURE 2.5-383SOIL PROFILE(SHEET 1 OF 2)FIGURE 2.5-383SOIL PROFILE(SHEET 2 OF 2)FIGURE 2.5-384SOIL PROFILE(SHEET 1 OF 2)FIGURE 2.5-384SOIL PROFILE(SHEET 2 OF 2)FIGURE 2.5-385SOIL PROFILEFIGURE 2.5-386SOIL PROFILEFIGURE 2.5-387SOIL PROFILE FIGURE 2.5-388SOIL PROFILEFIGURE 2.5-389SOIL PROFILEFIGURE 2.5-390SOIL PROFILE FIGURE 2.5-391ASOIL PROFILE FIGURE 2.5-392SOIL PROFILEFIGURE 2.5-393SOIL PROFILEFIGURE 2.5-394SOIL PROFILE FIGURE 2.5-395SOIL PROFILE List of Figures2-liiiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-396SOIL PROFILEFIGURE 2.5-397SOIL PROFILE FIGURE 2.5-398SOIL PROFILEFIGURE 2.5-399SOIL PROFILEFIGURE 2.5-400SOIL PROFILE FIGURE 2.5-401SOIL PROFILEFIGURE 2.5-402SOIL PROFILEFIGURE 2.5-403SOIL PROFILE FIGURE 2.5-404SOIL PROFILEFIGURE 2.5-405SOIL PROFILEFIGURE 2.5-406SOIL PROFILE FIGURE 2.5-407SOIL PROFILEFIGURE 2.5-408SOIL PROFILEFIGURE 2.5-409SOIL PROFILE FIGURE 2.5-410SOIL PROFILEFIGURE 2.5-411SOIL PROFILEFIGURE 2.5-412SOIL PROFILE FIGURE 2.5-413SOIL PROFILEFIGURE 2.5-414SOIL PROFILEFIGURE 2.5-415SOIL PROFILE FIGURE 2.5-416SOIL PROFILEFIGURE 2.5-417SOIL PROFILEFIGURE 2.5-418SOIL PROFILE FIGURE 2.5-419SOIL PROFILEFIGURE 2.5-420SOIL PROFILEFIGURE 2.5-421SOIL PROFILE FIGURE 2.5-422SOIL PROFILEFIGURE 2.5-423SOIL PROFILEFIGURE 2.5-424SOIL PROFILE FIGURE 2.5-425SOIL PROFILE FIGURE 2.5-426SOIL PROFILEFIGURE 2.5-427SOIL PROFILEFIGURE 2.5-428SOIL PROFILE 2-livList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-429SOIL PROFILEFIGURE 2.5-430SOIL PROFILE FIGURE 2.5-431SOIL PROFILEFIGURE 2.5-432SOIL PROFILEFIGURE 2.5-433SOIL PROFILE FIGURE 2.5-434SOIL PROFILEFIGURE 2.5-435SOIL PROFILEFIGURE 2.5-436SOIL PROFILE FIGURE 2.5-437SOIL PROFILEFIGURE 2.5-438SOIL PROFILEFIGURE 2.5-439SOIL PROFILE FIGURE 2.5-440SOIL PROFILEFIGURE 2.5-441SOIL PROFILEFIGURE 2.5-442SOIL PROFILE FIGURE 2.5-443SOIL PROFILEFIGURE 2.5-444SOIL PROFILEFIGURE 2.5-445SOIL PROFILE FIGURE 2.5-446SOIL PROFILEFIGURE 2.5-447SOIL PROFILEFIGURE 2.5-448SOIL PROFILE FIGURE 2.5-449SOIL PROFILEFIGURE 2.5-450SOIL PROFILEFIGURE 2.5-451SOIL PROFILE FIGURE 2.5-452SOIL PROFILEFIGURE 2.5-453SOIL PROFILEFIGURE 2.5-454SOIL PROFILE FIGURE 2.5-455SOIL PROFILEFIGURE 2.5-456SOIL PROFILEFIGURE 2.5-457SOIL PROFILE FIGURE 2.5-458SOIL PROFILE FIGURE 2.5-459SOIL PROFILEFIGURE 2.5-460SOIL PROFILEFIGURE 2.5-461SOIL PROFILE List of Figures2-lvWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-462SOIL PROFILEFIGURE 2.5-463SOIL PROFILE FIGURE 2.5-464SOIL PROFILEFIGURE 2.5-465SOIL PROFILEFIGURE 2.5-466SOIL PROFILE FIGURE 2.5-467SOIL PROFILEFIGURE 2.5-468SOIL PROFILEFIGURE 2.5-469SOIL PROFILE FIGURE 2.5-470SOIL PROFILEFIGURE 2.5-471SOIL PROFILEFIGURE 2.5-472SOIL PROFILE FIGURE 2.5-473SOIL PROFILEFIGURE 2.5-474SOIL PROFILEFIGURE 2.5-475SOIL PROFILE FIGURE 2.5-476SOIL PROFILEFIGURE 2.5-477SOIL PROFILEFIGURE 2.5-478SOIL PROFILE FIGURE 2.5-479SOIL PROFILEFIGURE 2.5-480SOIL PROFILEFIGURE 2.5-481SOIL PROFILE FIGURE 2.5-482SOIL PROFILEFIGURE 2.5-483SOIL PROFILEFIGURE 2.5-484SOIL PROFILE FIGURE 2.5-485SOIL PROFILEFIGURE 2.5-486SOIL PROFILEFIGURE 2.5-487SOIL PROFILE FIGURE 2.5-488SOIL PROFILEFIGURE 2.5-489SOIL PROFILEFIGURE 2.5-490SOIL PROFILE FIGURE 2.5-491SOIL PROFILE FIGURE 2.5-492SOIL PROFILEFIGURE 2.5-493SOIL PROFILEFIGURE 2.5-494SOIL PROFILE 2-lviList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-495SOIL PROFILEFIGURE 2.5-496SOIL PROFILE FIGURE 2.5-497SOIL PROFILEFIGURE 2.5-498SOIL PROFILEFIGURE 2.5-499SOIL PROFILE FIGURE 2.5-500SOIL PROFILEFIGURE 2.5-501SOIL PROFILEFIGURE 2.5-502SOIL PROFILE FIGURE 2.5-503SOIL PROFILEFIGURE 2.5-504SOIL PROFILEFIGURE 2.5-505SOIL PROFILE FIGURE 2.5-506SOIL PROFILEFIGURE 2.5-507SOIL PROFILEFIGURE 2.5-508SOIL PROFILE FIGURE 2.5-509SOIL PROFILEFIGURE 2.5-510SOIL PROFILEFIGURE 2.5-511SOIL PROFILE FIGURE 2.5-512SOIL PROFILEFIGURE 2.5-513SOIL PROFILEFIGURE 2.5-514SOIL PROFILE FIGURE 2.5-515SOIL PROFILEFIGURE 2.5-516SOIL PROFILEFIGURE 2.5-517SOIL PROFILE FIGURE 2.5-518SOIL PROFILEFIGURE 2.5-519SOIL PROFILEFIGURE 2.5-520WATTS BAR NUCLEAR PLANT UNDERGROUND BARRIER TRENCH A BACKFILL R - (CONSOLIDATED -UNDRAINED) 95% STD PROCTOR DENSITY (ASTM D698) 3% BELOW OPTIMUM MOISTUREFIGURE 2.5-521WATTS BAR NUCLEAR PLANT UNDERGROUND BARRIER TRENCH A BACKFILL R ( CONSOLIDATED -UNDRAINED) 100% STD PROCTOR DENSITY (ASTM D698) 3% BELOW OPTIMUM MOISTURE CONTENT List of Figures2-lviiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-522WATTS BAR NUCLEAR PLANT UNDERGROUND BARRIER TRENCH B BACKFILL R ( CONSOLIDATED - UNDRAINED) 95% STD PROCTOR DENSITY (ASTM D698) 3% BELOW OPTIMUM MOISTURE CONTENTFIGURE 2.5-523WATTS BAR NUCLEAR PLANT UNDERGROUND BARRIER TRENCH B BACKFILL R ( CONSOLIDATED -UNDRAINED) 100% STD PROCTOR DENSITY (ASTM D698) 3% BELOW OPTIMUM MOISTURE CONTENTFIGURE 2.5-524ERCW LIQUEFACTION TRENCH A BORROWFIGURE 2.5-525ERCW LIQUEFACTION TRENCH A SUPPLEMENTAL BORROWFIGURE 2.5-526ERCW LIQUEFACTION TRENCH BFIGURE 2.5-527ERCW LIQUEFACTION BORROW AREA 9FIGURE 2.5-528ERCW LIQUEFACTION BORROW AREA 10FIGURE 2.5-529ERCW LIQUEFACTION BORROW AREA 11FIGURE 2.5-530ERCW LIQUEFACTION BORROW AREA 12FIGURE 2.5-531ERCW LIQUEFACTION BORROW AREA 13FIGURE 2.5-532ERCW LIQUEFACTION BORROW AREA 2CFIGURE 2.5-533ERCW LIQUEFACTION BORROW AREA 2CFIGURE 2.5-534ERCW LIQUEFACTION TRENCH AFIGURE 2.5-535ERCW LIQUEFACTION TRENCH A SUPPLEMENTAL BORROWFIGURE 2.5-536ERCW LIQUEFACTION TRENCH BFIGURE 2.5-537ERCW LIQUEFACTION BORROW AREA 9FIGURE 2.5-538ERCW LIQUEFACTION BORROW AREA 10FIGURE 2.5-539ERCW LIQUEFACTION BORROW AREA 11FIGURE 2.5-540ERCW LIQUEFACTION BORROW AREA 12FIGURE 2.5-541ERCW LIQUEFACTION BORROW AREA 13FIGURE 2.5-542ERCW LIQUEFACTION BORROW AREA 2CFIGURE 2.5-543ERCW LIQUEFACTION BORROW AREA 2CFIGURE 2.5-544WATTS BAR NUCLEAR PLANT GRANULAR FILL (1032) Q-(UNCONSOLIDATED-UNDRAINED) 70% RELATIVE DENSITY (ASTM D2049)FIGURE 2.5-545WATTS BAR NUCLEAR PLANT GRANULAR FILL (1032) S-DIRECT SHEAR 70% RELATIVE DENSITY (ASTM 02049) 2-lviiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-546WATTS BAR NUCLEAR PLANT GRANULAR FILL (1032) Q- (UNCONSOLIDATED - UNDRAINED) 80% RELATIVE DENSITY (ASTM D2049)FIGURE 2.5-547WATTS BAR NUCLEAR PLANT GRANULAR FILL (1032) R- (CONSOLIDATED-UNDRAINED) S-DIRECT: SHEAR 80% RELATIVE DENSITY (ASTM D2049)FIGURE 2.5-548SUMMARY. OF GRANULAR FILL TEST DATA -RELACIVE"DENSITY DIESEL GENERATOR BUILDINGFIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 1 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 2 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 3 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE) (SHEET 4 OF 4)FIGURE 2.5-550ERCU PIPELINE SECTION B-B (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-551ERCU PIPELINE SECTION C-C (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-552ERCW PIPELINE SECTION D-DFIGURE 2.5-553ERCW PIPELINE SECTION E-EFIGURE 2.5-554CATEGORY I ELECTRICAL CONDUITS SECTION F-F (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 1 OF 2)FIGURE 2.5-554CATEGORY I ELECTRICAL CONDUITS SECTION F-F (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 2 OF 2)FIGURE 2.5-555CATEGORY I ELECTRICAL CONDUITS SECTION G-G (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-556CATEGORY I ELECTRICAL CONDUITS SECTION H-H (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-557CLASS IE CONDUIT FIGURE 2.5-558CLASS IE CONDUIT FIGURE 2.5-559CLASS IE CONDUITFIGURE 2.5-560CLASS IE CONDUITFIGURE 2.5-561CLASS IE CONDUIT List of Figures2-lixWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-562CLASS IE CONDUITFIGURE 2.5-563CLASS IE CONDUIT FIGURE 2.5-564ERCU & HPFP SYSTEMFIGURE 2.5-565ERCU & HPFP SYSTEMFIGURE 2.5-566INTAKE CHANNEL GRAIN SIZE ANALYSIS FIGURE 2.5-567ERCW PIPING SYSTEM - GENERALIZED PROFILE TVA DWG NO. 604K1009 ROFIGURE 2.5-568ERCW PIPING SYSTEM - GENERALIZED PROFILE TVA DWG NO. 604K1010 ROFIGURE 2.5-569ONE-DIMENSIONAL SOIL PROFILE USED FOR LIQUEFACTION EVALUATIONFIGURE 2.5-570COMPARISON OF INDUCED SHEAR STRESS AND SHEAR STRESS REQUIRED TO CAUSE 5% STRAIN AND RESULTING FACTORS OF SAFETY WITH DEPTH BELOW GROUND SURFACEFIGURE 2.5-571ERCW PIPELINE SECTION A-A(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 1 OF 4)FIGURE 2.5-571ERCW PIPELINE SECTION A-A(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 2 OF 4)FIGURE 2.5-571ERCW PIPELINE SECTION A-A(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 3 OF 4)FIGURE 2.5-571ERCW PIPELINE SECTION A-A(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 4 OF 4)FIGURE 2.5-572ERCW PIPELINE SECTION B-BFIGURE 2.5-573(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-574ERCW PIPELINE SECTION D-DFIGURE 2.5-575ERCW PIPELINE SECTION E-EFIGURE 2.5-576CATEGORY I ELECTRICAL CONDUITS SECTION F-F(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 1 OF 2)FIGURE 2.5-576CATEGORY I ELECTRICAL CONDUITS SECTION F-F(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 2 OF 2) 2-lxList of FiguresWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-577CATEGORY I ELECTRICAL CONDUITS SECTION G-G(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-578CATEGORY I ELECTRICAL CONDUITS SECTION H-H(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-579MISCELLANEOUS ERCW PIPING AND IE CONDUIT SOIL BORINGS(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-580YARD UNDERGROUND BARRIERS FOR POTENTIAL SOIL LIQUEFACTION TVA DWGNO. 10N213-1 R1FIGURE 2.5-581YARD UNDERGROUND BARRIERS FOR POTENTIAL SOIL LIQUEFACTIONTVA DWGNO. 10N213-2 R6FIGURE 2.5-582YARD CATEGORY I ERCW PIPING AND CONDUITS - PLANFIGURE 2.5-583REMEDIAL TREATMENT FOR POTENTIAL SOIL LIQUEFACTION -STABILITY ANALYSIS SUMMARY(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-584FINISHED GRADING - UNDERGROUND BARRIER AS-BUILT CROSS-SECTIONSFIGURE 2.5-585POWERHOUSE -SETTLEMENT STATIONS -BENCH MARK ASSEMBLYFIGURE 2.5-586SETTLEMENT VS. TIME FOR UNIT 1 REACTOR BUILDINGFIGURE 2.5-587SETTLEMENT VS. TIME FOR UNIT 2 REACTOR BUILDINGFIGURE 2.5-588MAXIMUM SETTLEMENT -AUXILIARY BUILDING SETTLEMENT STATION 10; MINIMUM SETTLEMENT -AUXILIARY BUILDING SETTLEMENT STATION 20 (1973-1982)(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-589MAXIMUM SETTLEMENT - DIESEL GENERATOR BUILDING SETTLENENT STATION 1 & INTAKE PUMPING STATION SETTLEMENT STATION 3A;MINIMUM SETTLEMENT DIESEL GENERATOR BUILDING SETTLEMENT STATION 4 & INTAKE PUMPING STATION SETTLEMENT STATION 4 (1975-1982)(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-590GENERAL LOCATION OF RELATIVE MOVEMENT DETECTORSTVA DWG NO. 10N203-3 R1FIGURE 2.5-591WATTS BAR DAM PROBABILITY DISTRIBUTION: NOVEMBER - MARCH RAINFALL PERIOD 1940 - 1983 List of Figures2-lxiWATTS BARLIST OF FIGURESSectionTitleFIGURE 2.5-592YARD ERCW PIPELINE EST. 25-YR HIGH WATER TABLEFIGURE 2.5-593WATER TABLE PROFILES FIGURE 2.5-594YARD UNDERGROUND BARRIER TRENCH A STA 1 + 78(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-595YARD UNDERGROUND BARRIER TRENCH A STA 3 + 78(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-596YARD UNDERGROUND BARRIER TRENCH A STA 5 + 78(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-597YARD UNDERGROUND BARRIER TRENCH A STA 7 + 78(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-598SUMMARY OF EARTHFILL TEST DATA - DENSITYFIGURE 2.5-599SUMMARY OF EARTHFILL TEST DATA -MOISTURE CONTENTFIGURE 2.5-600SUMMARY OF EARTHFILL TEST DATA -DENSITYFIGURE 2.5-601SUMMARY OF EARTHFILL TEST DATA -MOISTURE CONTENTFIGURE 2.5-602YARD UNDERGROUND BARRIER TRENCH B STA 1 + 100(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-603YARD UNDERGROUND BARRIER TRENCH B STA 2 + 50(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-604YARD UNDERGROUND BARRIER TRENCH B STA 3 + 00(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-605YARD UNDERGROUND BARRIER TRENCH B STA 4 + 50(ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-606SUMMARY OF FILL TEST DATA -DENSITYFIGURE 2.5-607SUMMARY OF EARTHFILL TEST DATA - MOISTURE CONTENTFIGURE 2.5-608SUMMARY OF EARTHFILL TEST DATA -DENSITYFIGURE 2.5-609SUMMARY OF EARTHFILL TEST DATA - MOISTURE CONTENTFIGURE 2.5-610SUMMARY OF GRANULAR FILL TEST DATA - RELATIVE DENSITY 2-lxiiList of FiguresWATTS BARLIST OF FIGURESSectionTitleTHIS PAGE INTENTIONALLY BLANK GEOGRAPHY AND DEMOGRAPHY 2.1-1WATTS BARWBNP-1122.0 SITE CHARACTERISTICS2.1 GEOGRAPHY AND DEMOGRAPHY2.1.1 Site Location and Description 2.1.1.1 Specification of LocationThe Watts Bar Nuclear Plant is located on a tract of approximately 1770 acres in Rhea County on the west bank of the Tennessee River at river mile 528. The site is approximately 1-1/4 miles south of the Watts Bar Dam and approximately 31 miles north-northeast of the Sequoyah Nuclear Plant.The 1770 acre reservation is owned by the United States and is in the custody of TVA. Also located within the reservation are the Watts Bar Dam and Hydro-Electric Plant, the TVA Central Maintenance Facility, and the Watts Bar Resort Area.The resort area buildings and improvements have been sold to private individuals and the associated land mass leased to the Watts Bar Village Corporation, Inc. Due to this sale and leasing arrangement no services are provided to the resort area from the Watts Bar Nuclear Plant.The location of each reactor is given below:2.1.1.2 Site Area MapFigure 2.1-1 is a map of the TVA area showing the location of all power plants. Figure 2.1-2 shows the Watts Bar site location with respect to prominent geophysical and political features of the area. This map is used to correlate with the population distribution out to 50 miles. The population density within 10 miles is keyed to Figure 2.1-3. This map shows greater detail of the site area. Figures 2.1-4a and 2.1-4b are maps of the Watts Bar Site Area. The Watts Bar reservation boundary and the exclusion area boundary are boldly outlined. Details of the site and the plant structures may be found on Figure 2.1-5.LONGITUDE AND LATITUDE (degrees/minutes/seconds)UNIT 1 35°36' 10.430" N84°47' 24.267" WUNIT 2 35°36' 10.813" N84°47' 21.398" WUNIVERSAL TRANSVERSE MERCATOR (Meters)NorthingEastingUNIT 1 N3, 941,954.27E 700,189.94 UNIT 2 N3, 941,967.71E 700,261.86 2.1-2GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-1122.1.1.3 Boundaries for Establishing Effluent LimitsThe boundary on which limits for the release of radioactive effluents are based is the site boundary shown in Figure 2.1-4b. 2.1.2 Exclusion Area Authority And ControlDue to the large size of the Watts Bar site, the exclusion area boundary is smaller than, and is completely within, the site boundary. The exclusion area is determined by a circle of radius 1200 meters centered on a point 20 feet from the north wall of the turbine building along the building centerline. The exclusion area boundary will be clearly marked on all access roads. The exclusion area is shown on Figure 2.1-4b.2.1.2.1 AuthorityAll of the land inside the exclusion area is owned by the United States and in the custody of TVA. TVA controls all activities within the reservation.2.1.2.2 Control of Activities Unrelated to Plant OperationThere will be no residences, unauthorized commercial operations, or recreational areas within the exclusion area. No public highways or railroads transverse the exclusion area. A portion of the Tennessee River does, however, cross the eastern portion of the exclusion area. This portion of the river is accessible for fishing, pleasure boating, and commercial transportation.2.1.2.3 Arrangements for Traffic ControlArrangements have been made and formalized through the Tennessee Multi-jurisdictional Radiological Emergency Plan to establish traffic control responsibilities on the portion of the Tennessee River within the exclusion zone as follows:(a)Non-commercial traffic - Tennessee Wildlife Resources Agency (TWRA).(b)Commercial traffic - U.S. Coast Guard (USCG).2.1.2.4 Abandonment or Relocation of RoadsNo public roads cross the exclusion area.2.1.3 Population DistributionHistorical and projected population information is contained in this section. Both resident and transient populations are included. For 2000, population was based on data from the U.S. Census Bureau, Census of Population, 2000, including block group, block, and census track data. Projections were based on county projections by Woods& Poole.Economic Analysis Division, Bureau of Economic Analysis, U.S. Department of Commerce, 1992. Subcounty population estimates were prepared using a constant share of the 1990 county total. County Census maps and 1:250,000 topographic maps were used to disegregate sub-county population data into the annular segments.

GEOGRAPHY AND DEMOGRAPHY 2.1-3WATTS BARWBNP-112Considerations included municipal limits, topography, road system, land ownership (e.g., National Forest), and land use (e.g., strip mines).Transient population consists of two components - recreation visitation and school enrollments. Peak hour visitation to recreation facilities is based on the maximum capacity of the facility plus some overflow. School enrollments for 2008 are from the Tennessee Department of Education Report Card 2008 (http://www.state.tn.us/education/). Projected enrollments are based on projected population growth in the respective counties.2.1.3.1 Population Within 10 MilesAbout 18,900 people lived within 10 miles of the Watts Bar site in 2000, with more than 75% of them between five and 10 miles from the site. Two small towns, Spring City and Decatur, which in 2007 had populations of 2,002 and 1,456 respectively, are located between five and 10 miles from the site. Decatur is south of the site, while Spring City is northwest and north-northwest. Most of the remainder of the area is sparsely populated, especially within five miles of the site. The pattern is expected to continue.Tables 2.1-1 through 2.1-7 show the estimated and projected population distribution within ten miles of the site for 2000, 2010, 2020, 2030, 2040, 2050, and 2060. Figure 2.1-3 shows the area within ten miles of the site overlaid by circles and sixteen compass sectors.2.1.3.2 Population Between 10 and 50 MilesThe area between 10 and 50 miles from the site lies mostly in the lower and middle portions of east Tennessee, with small areas in southwestern North Carolina and in northern Georgia. The population of this area is projected to increase by about 62%, or 660,000 persons, between 2000 and 2060. About 71% of this total increase is expected to be in the area between 30 and 50 miles from the site.The largest urban concentration between 10 and 50 miles is the city of Chattanooga, located to the southwest and south-southwest. This city had a population in 2007 of 169,884; about 80% of this population is located between 40 and 50 miles from the site, while the rest is located beyond 50 miles. The city of Knoxville is located to the east-northeast of the site and is slightly larger than Chattanooga. However, only a small share, less than 10 percent, of its population of 183,546, is located between 40 and 50 miles of the site with the remainder beyond 50 miles.There are three smaller urban concentrations in this area with population greater than 20,000. The city of Oak Ridge, which had a 2007 population of 27,514, is located about 40 miles to the northeast. The twin cities of Alcoa and Maryville, which had a combined population in 2007 of about 35,300, are located between 45 to 50 miles to the east-northeast. Cleveland, with a 2007 population of 39,200, is located about 30 miles to the south. Most of the population growth is expected to occur around these and the larger population centers.

2.1-4GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112There are, in addition, a number of smaller communities dispersed throughout the area, surrounded by low-density rural areas.Tables 2.1-8 through 2.1-14 contain the 2000, 2010, 2020, 2030, 2040,2050, and 2060 population distribution at various distances and directions from the site out to 50 miles. Figure 2.1-2 shows the area within 50 miles of the site overlaid by the circles and 16 compass sectors.2.1.3.3 Transient PopulationTransient population consists of visitors to recreation sites and students in schools. There are no major active industrial facilities or other major employers in the vicinity of the plant.Recreation--Estimated and projected peak hour visitation to recreation facilities within 10 miles of the plant are contained in Tables 2.1-15 through 2.1-21. The visitation is based on the maximum capacity of facilities plus some overflow. Capacities are based on the TVA data base of recreation facilities in the area. There are no recreation facilities beyond 10 miles which are large enough to cause significant variations in the total population within any annular segment.Schools--Eight schools are currently located within ten miles of Watts Bar Nuclear Plant. In 2008, these schools served 4,155 students, distributed as shown in Table 2.1-22. Enrollments for 2008 are from the Tennessee Department of Education Report Card 2008 (http://www.state.tn.us/education/). Enrollments at these schools are projected based on county population projections by Woods & Poole.2.1.3.4 Low Population ZoneThe low population zone (LPZ) distance as defined in 10 CFR 100 has been chosen to be three miles (4828 meters). The population of this area (2976 in 2010) and the population density (105 people per square mile in 2010) are both low. Population includes permanent residents (759) and transients (2217) estimates for 2010. Transients are "Peak Hour Recreation Visitors". In addition, this area is of such size that in the unlikely event of a serious accident there is a reasonable probability that appropriate measures could be taken to protect the health and safety of the residents. Specific provisions for the protection of this area are considered in the development of the Watts Bar Nuclear Plant site emergency plan. The present and projected population figures for this area are included in Tables 2.1-1 through 2.1-14. Features of the area within the low population zone distances are shown on Figure 2.1-3.2.1.3.5 Population CenterThe nearest population center (as defined by 10 CFR 100) is Cleveland, Tennessee, which had a 2007 population of 39,200. Cleveland is located approximately 30 miles south of the Watts Bar site.2.1.3.6 Population DensityCumulative population around the site out to 30 miles is plotted on Figures 2.1-20 and 2.1-21 for 2010 and 2060 . Also plotted on Figure 2.1-20 is the cumulative population GEOGRAPHY AND DEMOGRAPHY 2.1-5WATTS BARWBNP-112that would result from a uniform population density of 500 persons per square mile. Figure 2.1-21 contains a similar plot except that it is for a uniform density of 1,000 persons per square mile. For all distances for both years the population around the site is significantly smaller than that based on the uniform population density. REFERENCESNone.

2.1-6GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-1 Watts Bar2000 Population DistributionWithin 10 Miles of the Site(Sheet 1 of 1)DistanceFrom Site(Miles)Direction0-11-22-33-44-55-100-10NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTOTAL0 0

0 0

0 0

4108 0

0 0

0 0

0 0229 0

0 0

4 0

0 0

0 0

0 41007501020 9

9 92100 0

0 010025 15 1523005320200 150 150 15013 141200 0

041 70 87260 1201,37566 90140 140 30020 19201 9660 087 62 55364852,5951,674862 403 2421,553377 406 6141,863266 727 492 491 3391,837 2,15614,3021,749 1,161702 5412,217410 443 9452,837276 727 649 648 4962,766 2,36118,928 GEOGRAPHY AND DEMOGRAPHY 2.1-7WATTS BARWBNP-112Table 2.1-2 Watts Bar2010 Population DistributionWithin 10 Miles Of The Site(Sheet 1 of 1)Distance From SiteMilesDirection0-11-22-33-44-55-100-10N01000731,8631,946NE00102231009591,292NE0011184171494860ENE0011184171296662E052571843671,9022,715ESE0001624462502SE5001723497542SSE12001472467521,157S 100001,1832,2823,475SSW001200326338SW 00000809809WSW 04284697548723W 011177869546721WNW 00179761377552NW 0832562894052,0443,077NNW000134952,3992,628TOTAL271136191,5993,08516,55621,999 2.1-8GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-3 Watts Bar 2020 Population DistributionWithin 10 Miles Of The Site(Sheet 1 of 1) Distance From SiteMilesDirection0-11-22-33-44-55-100-10N 01100812,0642,157NNE 00112471111,0631,432NE 00142352196301,098ENE0014235219379846E 063292354692,4303,468ESE 0002031590641SE 6002230635693SSE 16001883149611,478S 130001,5112,9144,438SSW001600416432SW 00000896896WSW 053151107607800W 012188676605799WNW 001810768418612NW 0922843214492,2653,411NNW 0001481052,6582,911TOTAL351267351,8953,79019,53126,112 GEOGRAPHY AND DEMOGRAPHY 2.1-9WATTS BARWBNP-112Table 2.1-4 Watts Bar 2030 Population DistributionWithin 10 Miles Of The Site(Sheet 1 of 1) Distance From SiteMilesDirection0-11-22-33-44-55-100-10N01200902,2842,386NNE00122731231,1761,584NE00172872687701,342ENE 00172872684631,035E 084012875742,9694,239ESE 0002538721784SE 8002736776847SSE19002293841,1741,806S 150001,8473,5615,423SSW001900509528SW00000992992WSW053456119671885W 014209685670885WNW002011975463677NW 01023143554972,5073,775NNW0001641162,9423,222TOTAL421418542,2054,52022,64830,410 2.1-10GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-5 Watts Bar 2040 Population DistributionWithin 10 Miles Of The Site (Sheet 1 of 1)Distance From SiteMilesDirection0-11-22-33-44-55-100-10N 01300962,4322,541NNE 00132911311,2521,687NE 00203263048751,525ENE 00203263045251,175E 094563266513,3704,812ESE0002843818889SE 9003041881961SSE22002604361,3332,051S 170002,0964,0436,156SSW002200577599SW000001,0561,056WSW063660126715943W 0152210290713942WNW002212680492720NW 01093343785292,6694,019NNW0001741233,1323,429TOTAL481529452,4275,05024,88333,505 GEOGRAPHY AND DEMOGRAPHY 2.1-11WATTS BARWBNP-112Table 2.1-6 Watts Bar 2050 Population DistributionWithin 10 Miles Of The Site(Sheet 1 of 1)Distance From SiteMilesDirection0-11-22-33-44-55-100-10N 014001032,6162,733NNE00143131411,3471,815NE00223703469951,733ENE00223703465971,335E 0105183707403,8335,471ESE00032499311,012SE 100035471,0021,094SSE25002964961,5162,333S 200002,3844,5987,002SSW002500657682SW000001,1361,136WSW0639641367691,014W01623109977671,012WNW002313686530775NW 01173594065692,8714,322NNW0001881333,3693,690TOTAL551631,0452,6895,67327,53437,159 2.1-12GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-7 Watts Bar 2060 Population DistributionWithin 10 Miles Of The Site(Sheet 1 of 1)Distance From SiteMilesDirection0-11-22-33-44-55-100-10N015001102,8002,925NNE00153351511,4421,943NE00254153871,1151,942ENE 00254153876691,496E 0115814158304,2966,133ESE00036551,0431,134SE 110039531,1231,226SSE28003325561,6982,614S 220002,6725,1547,848SSW002800736764SW000001,2161,216WSW0742691468231,087W017251171048211,084WNW002514692567830NW 01253854356093,0734,627NNW0002011423,6073,950TOTAL611751,1512,9556,29430,18340,819 GEOGRAPHY AND DEMOGRAPHY 2.1-13WATTS BARWBNP-112Table 2.1-8 Watts Bar 2000 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 1,7491,2591,6023,1324,47512,217NNE1,1619,60415,20610,3071,79038,068NE7022,94113,74222,02255,63495,041ENE5412,49316,12836,931154,413210,506E 2,2177,59811,79816,63023,59961,842ESE4104,78213,2013,3062,24723,946SE 44315,23911,5272,9363,35333,498SSE9456,87110,2592,39726,21846,690S 2,8373,16429,10738,75811,40385,269SSW2762,78934,03137,21592,251166,562SW7279,36512,61052,88097,063172,645WSW6498,9462,0672,0312,74416,437W6482,4094,0832,2704,30013,710WNW4961,5153,0554,42415,26224,752NW 2,7661,87410,4876,06611,38332,576NNW2,36190019,0466,5334,45033,290TOTAL18,92881,749207,949247,838510,5851,067,049 2.1-14GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-9 Watts Bar 2010 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 1,9471,4991,7333,3884,84113,407NNE1,29210,08015,96010,8181,93640,087NE8603,08714,42323,11460,063101,547ENE6633,07519,89245,550175,297244,276E 2,7168,19113,65619,24928,71972,531ESE5025,15515,2803,8272,60127,365SE 54316,142813,3423,3983,42737,138SSE1,1587,40711,0592,58429,01751,225S 3,4753,41132,21442,89512,62094,615SSW3382,86731,98238,25594,830171,272SW80910,42312,96254,358110,380188,932WSW7229,9562,3512,3103,12018,459W7212,6014,2102,3404,43314,306WNW5521,6363,1504,56116,61426,513NW 3,0782,23111,4166,60312,39135,720NNW2,6281,07222,6787,7794,92939,084TOTAL22,00389,118229,308271,030565,2181,176,677 GEOGRAPHY AND DEMOGRAPHY 2.1-15WATTS BARWBNP-112Table 2.1-10 Watts Bar 2020 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Distance From SiteMilesDirection0-1010-2020-3030-4040-50TotalN 2,157173619313,7765,39514,995NNE1,43210,67116,89511,4522,15842,608NE1,0983,26815,26924,46967,259111,362ENE8463,69623,91354,758198,719281,932E 3,4688,68414,84020,91834,69282,602ESE6415,46516,6054,1582,82629,696SE 69317,41614,4993,6933,63039,931SSE1,4787,85311,7252,73932,18255,978S 4,4383,61635,72847,57513,997105,355SSW4322,97936,34639,74798,527178,030SW89611,54713,46856,477114,879197,268WSW80011,0312,4462,4043,24819,929W7992,7734,5342,5214,77515,401WNW6121,7443,3924,91217,84928,509NW 3,4112,58412,2657,09413,31338,666NNW2,9111,24126,2629,0085,29344,716TOTAL26,11396,304250,119295,702618,7411,286,979 2.1-16GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-11 Watts Bar 2030 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 2,3871,9902,1484,1995,99916,723NNE1,58411,34717,96612,1782,40045,475NE1,3423,47516,23626,01975,084122,156ENE1,0344,35828,19564,563244,050322,200E 4,2389,26916,17022,79341,04693,516ESE7845,83418,0934,5313,08032,322SE 84718,59015,7994,0243,87143,131SSE1,8078,38212,5152,92435,64461,272S 5,4233,86039,57152,69215,502117,048SSW5283,12438,12341,689103,342186,806SW99212,77914,12659,238120,676207,811WSW88612,2072,5702,5253,41221,600W8842,9754,9072,7285,16716,661WNW6771,8713,6715,31619,47931,014NW 3,7742,96213,3857,74214,52842,391NNW3,2221,42230,09910,3245,71550,782TOTAL30,409104,445273,574323,485678,9951,410,908 GEOGRAPHY AND DEMOGRAPHY 2.1-17WATTS BARWBNP-112Table 2.1-12 Watts Bar 2040 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 2,6191,8852,7784,7686,17218,222NNE2,15011,76218,76614,5022,54749,727NE1,4413,78316,73429,83878,334130,130ENE1,1103,55329,53963,798253,831351,832E 1,91511,35218,64730,06344,013105,990ESE1356,23020,1205,0683,28034,833SE 20319,85215,1853,9504,82244,012SSE7828,95112,9072,91848,59374,151S 5,8234,58642,88356,43017,985127,707SSW5675,72542,51746,281106,392201,482SW1,05112,97814,49962,307111,795202,630WSW93812,7912,8372,8403,37222,778W9373,4065,5552,9445,47418,316WNW7172,0914,3725,65420,51133,345NW 3,9982,88918,63410,46215,95651,940NNW3,4131,53633,84311,6095,89056,290TOTAL27,799113,368299,818353,432728,9681,523,385 2.1-18GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-13 Watts Bar 2050 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 2,7332,4572,4524,7956,85119,288NNE1,81412,27519,43513,1742,74049,438NE1,7333,75917,56428,14787,451138,654ENE1,3355,52235,72681,809267,271391,663E 5,47210,30818,87826,61052,132113,400ESE1,0126,48821,1235,2903,56937,509SE 1,09320,67418,4454,6984,15149,061SSE2,3339,32213,9183,25241,61270,437S 7,0024,29346,19761,51518,098137,105SSW6813,32540,57544,371109,989198,941SW1,13614,63515,03563,048134,126227,980WSW1,01413,9802,8652,8073,79224,449W1,0133,3355,2042,8935,48017,925WNW7752,0973,8945,63821,00233,406NW 4,3233,65814,4318,56016,06347,035NNW3,6901,75737,17612,7526,49061,865TOTAL37,159117,885312,909369,359780,8441,618,156 GEOGRAPHY AND DEMOGRAPHY 2.1-19WATTS BARWBNP-112Table 2.1-14 Watts Bar 2060 Population DistributionWithin 50 Miles Of The Site(Sheet 1 of 1)Direction0-1010-2020-3030-4040-50TotalN 2,9262,6962,6245,1297,32920,704NNE1,94212,80420,27213,7412,93151,690NE1,9423,92118,32029,35994,005147,547ENE1,4976,12739,63990,768289,886427,917E 6,13310,84320,23928,52857,880123,623ESE1,1346,82422,6465,6713,85540,130SE 1,22521,74819,7745,0374,31752,101SSE2,6149,80614,6413,42144,71175,193S 7,8484,51549,63866,09719,446147,544SSW7633,43541,91945,841113,633205,591SW1,21615,66615,53365,136140,806238,357WSW1,08614,9652,9992,9463,98125,977W1,0843,5195,4243,0165,71218,755WNW8302,2134,0585,87722,06035,038NW 4,6274,01415,5448,99116,87250,048NNW3,9491,92840,79213,9926,88867,549TOTAL40,816125,024334,062393,550834,3121,727,764 2.1-20GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-15 Watts Bar 2009 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 45000180000630NNE130017501256301,060NE125018001,2501,7023,257ENE1251252901201200780E 000000000000000SE 0000000SSE0000000S 1150014000255SSW04000110480630SW011511000115340WSW0000000W0000000WNW0000000NW 000002,1252,125NNW000001,0321,032TOTAL9452809352601,6056,08410,109 GEOGRAPHY AND DEMOGRAPHY 2.1-21WATTS BARWBNP-112Table 2.1-16 Watts Bar 2010 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 4620185000647NNE133018001286461,087NE128018501,2821,7463,341ENE1281282981231230800E 0000000ESE0000000SE 0000000SSE0000000S 1180014400262SSW04100113492646SW011811300118349WSW0000000W0000000WNW0000000NW 000002,1802,180NNW000001,0591,059TOTAL9692879612671,6466,24110,371 2.1-22GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-17 Watts Bar 2020 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 5080203000711NNE147019801417121,198NE141020301,4121,9233,679ENE1411413281361360882E 0000000ESE0000000SE 0000000SSE0000000S 1300015800288SSW04500124542711SW013012400130384WSW0000000W0000000WNW0000000NW 000002,4012,401NNW000001,1661,166TOTAL1,0673161,0562941,8136,87411,420 GEOGRAPHY AND DEMOGRAPHY 2.1-23WATTS BARWBNP-112Table 2.1-18 Watts Bar 2030 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 5600224000784NNE162021801567841,320NE156022401,5562,1194,055ENE1561563611491490971E 0000000ESE0000000SE 0000000SSE0000000S 1430017400317SSW05000137598785SW014313700143423WSW0000000W0000000WNW0000000NW 000002,6452,645NNW000001,2851,285TOTAL1,1773491,1643231,9987,57412,585 2.1-24GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-19 Watts Bar 2040 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 5810232000813NNE168022601618131,368NE161023201,6142,1974,204ENE16116137415515501,006E 0000000ESE0000000SE 0000000SSE0000000S 1480018100329SSW05200142620814SW014814200148438WSW0000000W0000000WNW0000000NW 000002,7432,743NNW000001,3321,332TOTAL1,2193611,2063362,0727,85313,047 GEOGRAPHY AND DEMOGRAPHY 2.1-25WATTS BARWBNP-112Table 2.1-20 Watts Bar 2050 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 6210248000869NNE179024101728691,461NE172024801,7242,3474,491ENE17217240016616601,076E 0000000ESE0000000SE 0000000SSE0000000S 1590019300352SSW05500152662869SW015915200159470WSW0000000W0000000WNW0000000NW 000002,9312,931NNW000001,4231,423TOTAL1,3033861,2893592,2148,39113,942 2.1-26GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-21 Watts Bar 2060 Estimated Peak Recreation VisitationWithin 10 Miles Of The Site(Sheet 1 of 1)DistanceMilesDirection0-11-22-33-44-55-100-10N 6610264000925NNE191025701849261,558NE184026401,8372,5014,786ENE18418442617617601,146E 0000000ESE0000000SE 0000000SSE0000000S 1690020600375SSW05900162705926SW016916200169500WSW0000000W0000000WNW0000000NW 000003,1223,122NNW000001,5161,516TOTAL1,3894121,3733822,3598,93914,854 2.1-27GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112Table 2.1-22 School EnrollmentsWithin 10 Miles ofWatts Bar Nuclear PlantEnrollmentSchool Name Location2008201020202030204020502060 Meigs South ElementaryS 5-10418442565691784892999Meigs North ElementaryS 5-104374635917728209321045Meigs MiddleS 5-10399422539659748851954 Meigs County HighS 5-10534565722882100111391276Rhea County HighWSW 5-101,4051,4341,5891758187220142156Spring City ElementaryNW 5-10633646716792843907971 Spring City MiddleNW 5-10309315349387412443474Evensville CenterWSW 5-1020202325272931Total4,1554,3075,0945,9166,5077,2077,906 2.1-28GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-112THIS PAGE INTENTIONALLY LEFT BLANK GEOGRAPHY AND DEMOGRAPHY2.1-29WATTS BARWBNP-112Figure 2.1-1 Location of Watts Bar Nuclear Plant Site 2.1-30GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-2 Watts Bar Site Location 0-50 Miles GEOGRAPHY AND DEMOGRAPHY2.1-31WATTS BARWBNP-112Figure 2.1-3 Watts Bar Site Location 0-10 Miles 2.1-32GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-4a Watts Bar Topographic Map & Reservation Boundary GEOGRAPHY AND DEMOGRAPHY2.1-33WATTS BARWBNP-112Figure 2.1-4b Site Boundary / Exclusion Area Boundary 2.1-34GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-5 Main Plant General Plan GEOGRAPHY AND DEMOGRAPHY2.1-35WATTS BARWBNP-112Figure 2.1-6 Deleted by Amendment 63 2.1-36GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-7 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-37WATTS BARWBNP-112Figure 2.1-8 Deleted by Amendment 63 2.1-38GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-9 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-39WATTS BARWBNP-112Figure 2.1-10 Deleted by Amendment 63 2.1-40GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-11 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-41WATTS BARWBNP-112Figure 2.1-12 Deleted by Amendment 63 2.1-42GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-13 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-43WATTS BARWBNP-112Figure 2.1-14 Deleted by Amendment 63 2.1-44GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-15 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-45WATTS BARWBNP-112Figure 2.1-16 Deleted by Amendment 63 2.1-46GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-17 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-47WATTS BARWBNP-112Figure 2.1-18 Deleted by Amendment 63 2.1-48GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-19 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-49WATTS BARWBNP-112Figure 2.1-20 2010 Cumulative Population Within 30 Miles/ 500 persons per Square Mile2010 Cumulative Population Within 30 Miles/500 persons Square Mile1010010001000010000010000001000000015102030MilesPopulation500/Sq2010WATTS BAR NUCLEAR PLANTFINAL SAFETYWITHIN 30 MILES OF THE SITEANALYSIS REPORTFIGURE 2.1-202010 CUMULATIVE POPULATION 2.1-50GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-112Figure 2.1-21 2060 Cumulative Population Within 30 Miles/ 1000 persons per Square Mile2060 Cumulative Population Within 30 Miles/1000 persons Square Mile1010010001000010000010000001000000015102030MilesPopulation1000/Sq2060WATTS BAR NUCLEAR PLANTFINAL SAFETYANALYSIS REPORT2060 CUMULATIVE POPULATIONWITHIN 30 MILES OF THE SITEFIGURE 2.1-21 NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-1WATTS BARWBNP-1122.2 NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES2.2.1 Location and RouteMaps showing the area are found on Figures 2.1-2 and 2.1-3. There are no significant industrial facilities near WBN.The nearest land transportation route is State Route 68, about one mile north of the Site. The Tennessee River is navigable past the site.A main line of the CNO&TP (Norfolk Southern Corporation) is located approximately 7 miles west of the site. A TVA railroad spur track connects with this main line and serves the Watts Bar Nuclear Plant. The spur has fallen into disuse and would need to be repaired prior to use.No other significant industrial land use, military facilities, or transportation routes are in the vicinity of the nuclear plant. 2.2.2 Descriptions2.2.2.1 Description of FacilitiesThe Tennessee River is a major barge route in which a 9-foot navigation channel is maintained.2.2.2.2 Description of Products and MaterialsTable 2.2-1 shows the total amount of certain hazardous materials shipped past the Watts Bar Nuclear Plant from 2002 to 2007 on a yearly basis. Total traffic past the site was 670,716 tons in 2008 compared to 1,294,959 tons in 1990 and to 760,000 tons in 1975. Traffic on the TVA railroad spur consisted of heavy components for the nuclear plant. 2.2.2.3 PipelinesNo pipelines carrying petroleum products are located in the vicinity of the nuclear plant. 2.2.2.4 WaterwaysThe Watts Bar Nuclear Plant site is located on a 9-foot navigable channel on Chickamauga Reservoir. Its intake structure is located approximately two miles downstream of Watts Bar Lock and Dam. Watts Bar lock is located on the left bank of the Tennessee River with dimensions of 60' wide x 360' long. Towboat sizes vary from 1500 to 1800 horsepower for this section of the Tennessee River (Chattanooga to Knoxville). The most common type barge using the water way is the 35'x 195' jumbo barge with 1,500 ton capacity. There were also numerous liquid cargo (tank) barges of varying size with capacity to 3,000 tons.

2.2-2NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES WATTS BARWBNP-1122.2.2.5 Airports No airports are located within 10 miles of the site. Mark Anton airport is the nearest, 11 to 12 miles southwest of the site. Its longest runway is 4,500 feet and is hard surfaced. It has no commercial facilities. Lovell Field about 45 miles south-southwest is the nearest airfield with commercial facilities. The annual number of movements per year is about 62,000 for Lovell Field and about 4,000 at Mark Anton of which 1,300 are student pilots executing "touch and go's".Figures 2.2-1 and 2.2-2 show the plant in relation to civilian and military airways, respectively. Traffic on airway V51 totals fewer than 2,000 flights per year based on 2008 data.2.2.2.6 Projections of Industrial GrowthWithin five miles of the Watts Bar Nuclear Plant are two major potential industrial sites. Three-to-five miles southwest of the plant is a 3,000 acre tract and about 3 miles north is a 200 acre tract. The 3,000 acre site is currently under the ownership of the Mead Corporation. A site impact analysis for the possible development of a paper plant has been performed on the site. However, the Mead Corporation has withdrawn its application to build the plant and there are no immediate or future plans for development. The 200 acre tract is still undeveloped and there are no immediate or future plans for development of the site.2.2.3 Evaluation of Potential AccidentsNone of the activities being performed in the vicinity of the site are considered to be a potential hazard to the plant.A study of the products and materials transported past the site by barge reveals that no potential explosion hazard exists. The worst potential condition for onsite essential safety features other than the intake pumping station arising from an accident involving the products transported near the site (coal, fuel oil, asphalt, tar and pitches) would be the generation of smoke by the burning of these products. The hazard to the Main Control Room from the generation of smoke from these products is covered in Section 6.4.4.2.Gasoline supply to Knoxville is via pipeline. As specified in Section 2.2.2.3, this pipeline is not in the vacinity of the Watts Bar Nuclear Plant. As of 1974, with the pipeline in full operation, no future gasoline barge shipments past the Watts Bar Nuclear Plant site are expected. The potential for damage to the Watts Bar Nuclear Plant from a gasoline barge explosion is therefore negligible.Fuel oil is shipped by barge past the Watts Bar Nuclear Plant Site. In case of a fuel oil barge accident, fire and dense smoke may result. Neither fire or dense smoke will effect plant safety, however.The intake pumping station is protected against fire by virtue of design and location. Pump suction is taken from the bottom of the channel. All pumps and essential cables and instruments are protected from fire by being enclosed within concrete walls. Also, NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-3WATTS BARWBNP-112the embayment is just downstream of the Watts Bar Dam, which is locked on the opposite side of the Tennessee River. Consequently, any oil released to the river would be swept by the current past the embayment that leads to the intake pumping station due to the fact that the embayment is located on the inside of a bend in the Tennessee River.Even if fuel oil from a spill should enter the embayment and reach the intake pumping station, the oil would have no significant effect on the water intake system or the systems it serves. Entry of oil in the intake is unlikely since the oil will float on water.

A concrete skimmer wall exists at the pumping station and the pumps take suction approximately 20 feet below the minimum normal water level. The pump suction would be approximately 10 feet below the water surface even in the event of failure of the downstream dam. Any oil that did enter the pumps would be highly diluted and in such a state would have a minor effect on system piping losses and heat exchanger capabilities.2.2.3.1 ReferencesNone.

2.2-4NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES WATTS BARWBNP-112Table 2.2-1 Waterborne Hazardous Material Traffic (Tons) (U.S. Army Corps of Engineers)2002-2007 Sheet 1 of 1)COMMODITIES200220032004200520062007Ammonium Nitrate Fertilizers3110 Carbon (Including Carbon Black), NEC15232760513481518 Ethyl Alcohol (Not Denatured) 80% or More Alcohol137147118594137464133412769938947Fuel Oils, NEC34007209Lubrication Petroleum Oils from Petrol & Bitum Mineral12732Other Light Oils from Petroleum & Bitum Minerals9120Petro.Bitumen, Petro.Coke, Asphalt, Butumen mixes, NEC1531127082518311437314871061Petroleum Oils/Oils from Bituminous Minerals, Crude6674Pitch & Pitch Coke from Coal Tar/Other Mineral Tars248986258584236716254001235381164752Vermiculite, Perlite, Chlorites16421643Grand Total402896397491408863419774317165261089 NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-5WATTS BARWBNP-112Table 2.2-2 Deleted by Amendment 94 2.2-6NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES WATTS BARWBNP-112THIS PAGE IS INTENTIONALLY LEFT BLANK NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES2.2-7WATTS BARWBNP-112Security-Related Information - Withheld Under 10CFR2.390Figure 2.2-1 Airways in the Area of the Plant NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES2.2-8WATTS BARWBNP-112Security-Related Information - Withheld Under 10CFR2.390Figure 2.2-2 Military Airways in the Area of the Plant METEOROLOGY 2.3-1WATTS BARWBNP-1122.3 METEOROLOGY2.3.1 Regional Climate2.3.1.1 Data SourcesMost of the climatic data summaries and other publications used in describing the site region meteorology are included in the list of references for Section 2.3. Those used in a general way not specifically referenced are the following: (1) U.S. Department of Commerce, Normal Weather Charts for the Northern Hemisphere, U. S. Weather Bureau, Technical Paper No. 21, October 1952, and (2) U.S. Department of Commerce, Climatic Atlas of the United States, Environmental Science Services Administration, Environmental Data Service, June 1968.2.3.1.2 General ClimateThe Watts Bar site is in the eastern Tennessee portion of the southern Appalachian region. This area is dominated much of the year by the Azores-Bermuda anticyclonic circulation shown in the annual normal sea level pressure distribution (Figure 2.3-1).[1] This dominance is most pronounced in late summer and early fall and is accompanied by extended periods of fair weather and widespread atmospheric stagnation. [2] In winter and early spring, the normal circulation becomes diffuse over the region as eastward moving migratory high- or low-pressure systems, identified with the mid-latitude westerly upper air circulation, bring alternately cold and warm air masses into the Watts Bar site area with resultant changes in wind, atmospheric stability, precipitation, and other meteorological elements. In the summer and early fall, the migratory systems are less frequent and less intense. Frequent incursions of warm, moist air from the Gulf of Mexico and occasionally from the Atlantic Ocean are experienced in the summer.The site is primarily influenced by cyclones from the Southwest and Gulf Coast that translate toward the Northeast U.S. Coast by passing along either the west side or the east side of the Appalachian chain and by cyclones from the Plains or Midwest that move up the Ohio Valley. Topography around the site strongly influences the local climate. Mountain ranges located both northwest and southeast of the site, which is in the upper Tennessee River Valley, are oriented generally northeast-southwest and rise 3,000 to 4,000 feet MSL and, in places, 5,000 to 6,000 feet MSL. The latter elevations are in the Great Smoky Mountains to the east and southeast. They provide an orographic barrier that reduces the low-level atmospheric moisture from the Atlantic Ocean brought into the area by winds from the East. However, considerable low-level atmospheric moisture from the Gulf of Mexico is often brought into the area by winds from the south, southwest, or west.The predominant air masses affecting the site area may be described as interchangeably continental and maritime in the winter and spring, maritime in the summer, and continental in the fall. Temperature patterns generally conform to the seasonal trends typical of continental, humid subtropical climates. Precipitation is normally well distributed throughout the year, but monthly amounts are generally 2.3-2METEOROLOGY WATTS BARWBNP-112largest in the winter and early spring and smallest in the late summer and fall. The primary maximum occurs in March and is associated with cyclones passing through or near the region. A secondary maximum of precipitation occurs in July and is characteristically the result of diurnal thunderstorms occurring most frequently in the afternoon and evening. The minimum monthly precipitation normally occurs in October. Snow and sleet usually occur only during the period November through March and generally result from cold air pushing southward through the area against relatively warm, moist air.2.3.1.3 Severe WeatherSevere storms are relatively infrequent in east Tennessee, being east of the area of major tornadic activity, south of nearly all storms producing blizzard conditions, and too far inland to be affected often by the remnants of intense tropical cyclones. Damage from such remnants of tropical cyclones is rare, occurring only about once every 18 years, and is generally restricted to flood effects from heavy rains.[3] The probability that a tornado will strike the Watts Bar site is low. During the period 1950-2009 (when climatological records are fairly complete) there were 38 tornadoes within 30 miles of the Watts Bar site, including 12 tornadoes F3/EF3 or greater [aa,bb]. The probability of a tornado striking the site can be calculated using the following equations according to NUREG/CR-4461, Rev. 2 [cc]. Using the principle of geometric probability described by H. C. S. Thom, [8] the probability of a tornado striking any point in the one degree latitude by one degree longitude square containing the plant site may be calculated. Thom's equations are the following:P = mean probability of a tornado striking a point in any year in a one-degree square. = mean path area of a tornado (mi2)t = mean number of tornadoes per year.A = area of one-degree latitude, one-degree longitude square = 3887 mi2 for the one-degree square containing the Watts Bar site (84°W to 85°W by 35°N to 36°N).R = mean recurrence interval for a tornado striking a point in the one- degree square (years).PztA-----=(1)R1P----=(2)Z METEOROLOGY 2.3-3WATTS BARWBNP-112For z = 2.8209 mi2 (from H. C. S. Thom [8]) and t = 1.02 tornadoes per year (55 tornadoes from NUREG/CR-4461 divided by 54 years of record), the probability is 7.40 x 10-4 with a recurrence interval of 1351 years. For consideration in station blackout criteria, the annual expectation of tornadoes with winds exceeding 113 mph (F2/EF2 or greater) is 3.77 x 10-4 per square mile (t = 0.52, based on 28 tornadoes F2 and above 54 years). Windstorms are relatively infrequent, but may occur several times a year. Strong winds are usually associated with thunderstorms that occur about 50 times per year based on records for Chattanooga and Knoxville (Table 2.3-1). Moderate and occasionally strong winds sometimes accompany migrating cyclones and air mass fronts. Wind records for Chattanooga exist for 1945-2009 (65 years)[dd], for Knoxville during 1943-2009 (67 years)[ee], and for Watts Bar meteorological tower during 1973-2009 (37 years). The extreme wind speed cases have been converted to 3-second gust equivalents for comparison (Table 2.3-1A). The highest observed wind speeds (3-second equivalent) are 102 mph on March 24, 1947 at Chattanooga, 88 mph on July 15, 1961 at Knoxville, and 59 mph on March 25, 1975 at Watts Bar meteorological tower. During 1950-2009, winds > 50 knots (> 57 mph) were reported an average of 16.33 times per year for Rhea County (which contains Watts Bar Nuclear Plant) and the 6 surrounding counties[ff] combined (Table 2.3-1B).During 1950-2009, hail 3/4 inch in diameter or larger has been reported an average of 6.98 times per year for Rhea County and the 6 surrounding counties[ff] combined (Table 2.3-1B).The likelihood of hail (any size) for a specific location in the area is less than once per year, based on a 52-year record (1879-1930) at Chattanooga and a 60-year record (1871-1930) at Knoxville. [gg]Annual lightning strike density is estimated to be 7.7 flashes to ground per km2 according to NUREG/CR-3759 [hh]. Based on thunderstorm day frequencies observed at Chattanooga (Table 2.3-1) the seasonal densities of flashes to ground per km2 are estimated to be 0.55 (winter), 2.17 (spring), 4.02 (summer), and 0.96 (fall). These seasonal densities were estimated by calculating the percent of the annual thunderstorm days during the season and multiplying by the annual lightning density value. For example, winter has 3.9 thunderstorm days out of the 55.1 annual total, or 7.1%. Applying 7.1% to the 7.7 annual flashes values results in the 0.55 seasonal flashes value for the winter season.Relative potential for air pollution is indicated by the seasonal distribution of atmospheric stagnation cases of four days or more analyzed by Korshover.[15]In a 35-year period (1936-1970), there were about one case in the winter, 11 cases in the spring, 24 cases in the summer, and 34 cases in the fall. According to Holzworth [16] there were about 35 forecast-days of high meteorological potential for air pollution in a 5-year period based on data collected in the 1960s and early 1970 (Figure 2.3-2). On the average, about seven air pollution forecast-days per year can be expected, with significantly greater probability in the summer and fall than in the winter and spring. Frost penetration depth is important for protection of water lines and other buried structural features that are subject to freeze damage. The average depth for the 1899 2.3-4METEOROLOGY WATTS BARWBNP-112through 1938 period was about six inches, and the extreme depth during the 1909 through 1939 period was about 14 inches.[17]Estimations of regional glaze probabilities have been made by Tattelman, et al. [18] For Region V, which contains Tennessee, point probabilities for glaze icing 5.0 cm or more thick and 2.5 cm or more thick in any one year are about 1.0 x 10-4 and 4.0 x 10-4, respectively. These probabilities correspond to recurrences of about once in 10,000 years and about once in 2,500 years. Ice thicknesses of 2.0, 1.8, 1.7, and 1.5 cm correspond to return periods of 100, 50, 25, and 10 years.All ice storms with glaze thicknesses 2.5 cm or greater that were analyzed were accompanied by maximum wind gusts 10 m/sec or greater. However, only one had maximum gusts 20 m/sec or greater, and that storm had ice thicknesses less than 5.0 cm.The point probabilities for lesser ice thicknesses are about 0.20 for > 1.25 cm and 0.37 for > 0.63 cm, and the respective recurrence intervals are once in five years and once in three years. However, glaze ice thicknesses 1.25 cm or less generally result in little structural damage, except for above-ground utility wires when strong winds are combined with the storms. The major impact of storms which produce these lesser ice thicknesses is a hazard to travel in the affected areas.Snowfall records for Chattanooga NWS (1937-2009) show maximum 24-hour and monthly snowfall amounts of 20.0 and 20.0 inches [dd]. Snowfall records for Knoxville NWS (1951-2009) show maximum 24-hour and monthly snowfall amounts of 18.2 and 23.3 inches [ee]. Older records for Knoxville before the NWS station was established show a maximum single storm of 22.5 inches [19]. The total snow load was calculated by assuming that the maximum single snowfall falls on the maximum snowpack. For the Watts Bar Site area, the weight of the 100-year return period snow pack is estimated to be about 14 pounds per square foot.[20]Assuming that the 22.5 inches of snow that fell at Knoxville on December 4-6, 1886, had the water equivalency ratio of 1:7, or 0.14 inch per inch of snow, the weight would be about 17 pounds per square foot. The combined weight of the existing snowpack, plus the new snow would be about 31 pounds per square foot on a flat surface. For conservatism, the weight of the maximum single storm snowfall recorded in Tennessee during the 1871 through 1970 period was estimated. This 28-inch snowfall occurred on February 19-21, 1960 at Westbourne, on the Cumberland Plateau in northeastern Tennessee.[21] A more conservative water equivalency ratio of 1:6 was used to give an estimated weight of about 24 pounds per square foot. The total snow load for this case would be about 38 pounds per square foot. Design loading considerations, including the snow load, for the reactor shield building and other Category I structures are presented in Sections 3.8.1 and 3.8.4, respectively.No meteorological parameters were used in evaluating the performance of the ultimate heat sink, which consists of a once-through cooling system utilizing the Chickamauga Reservoir on the Tennessee River. A demonstration of adequate water flow past the site is used in the design bases. This is discussed in Section 2.4.11.

METEOROLOGY 2.3-5WATTS BARWBNP-112The initial design conditions assumed for the Watts Bar Nuclear Plant reactor shield building (and other safety-related structures) are the following:For the additional Diesel Generator Building and structures initiated after July 1979, the design basis tornado parameters are as follows:These and tornado-driven missile criteria are discussed in Sections 3.3 and 3.5. The fastest mile of wind at 30 feet above ground is about 95 mph for a 100-year return period in the site area.[22] The vertical distribution of horizontal wind speeds at 50, 100, and 150 feet above ground is 102, 113, and 120 mph on the basis of the speed at 30 feet and a power law exponent of 1/7. A gust factor of 1.3 is often used at the 30-foot level, but this would be conservative for higher levels. The wind load for the Shield Building is based on 95 mph for that level, as discussed in Section 3.3. Estimates of the probable maximum precipitation (PMP) and the design considerations for the PMP are discussed in Section 2.4. 2.3.2 Local Meteorology2.3.2.1 Data SourcesShort-term site-specific meteorological data from the TVA meteorological facility at the Watts Bar Nuclear Plant site are the basis for dispersion meteorology analysis. Data representative of the site or indicative of site conditions for temperature, precipitation, snowfall, humidity, fog, or wind were also obtained from climatological records for Chattanooga, Dayton, Decatur, Knoxville, Oak Ridge, and Watts Bar Dam, all in Tennessee. Short-term records for the Sequoyah Nuclear Plant site were used. These data source locations are shown relative to the plant site in Figure 2.3-3. 2.3.2.2 Normal and Extreme Values of Meteorological ParametersTemperature data from Dayton [13] and Chattanooga[dd] are presented in Tables 2.3-2 and 2.3-3, respectively. The Chattanooga and Dayton mean daily data are provided as reasonably representative and recent (1971-2000) temperature information. Normal mean dry-bulb temperatures range from 36.2-39.4°F in the winter to 76.9-(1)300 mph=Rotational Speed(2)60 mph=Translational Speed(3)360 mph=Maximum Wind Speed(4)3 psi=Pressure Drop(5)1psi/sec=Rate of Pressure Drop (3 psi/3 sec is assumed)(1)290 mph=Rotational Speed (2)70 mph=Translational Speed(3)360 mph=Maximum Wind Speed(4)3 psi=Pressure Drop(5)2 psi/sec=Rate of Pressure Drop (3 psi/1.5 sec is assumed) 2.3-6METEOROLOGY WATTS BARWBNP-11279.6°F in the summer. Normal daily maximum temperatures range from 45.9-49.9°F in winter to 87.7-89.6°F in summer. Normal daily minimum temperatures range from 26.5-31.1°F in winter to 66.1-69.0°F in summer. The extreme maxima recorded for the respective data periods (46 years for Dayton and 70 years for Chattanooga) were 107°F at Dayton and 106°F at Chattanooga, while the extreme minima recorded were -15°F and -10°F, respectively. Temperature data from Decatur (Table 2.3.2), for 60 years prior to data collection at Dayton, reported an extreme maximum temperature of 108°F and an extreme minimum temperature of -20°F.Precipitation data are presented in Table 2.3-4. These data are from two different rain gauges near Watts Bar Nuclear Plant, one at Watts Bar Dam (1939-1975) and one at the Watts Bar Nuclear Plant meteorological tower (1974-2008). Precipitation has fallen an average of 110-111 days per year, with an annual average of 45.43 inches at the meteorological tower and 52.57 inches at Watts Bar Dam. The maximum monthly rainfall ranged from 6.52 inches to 14.78 inches. The minimum monthly amount was 0,00. The maximum rainfall in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> was 5.31 inches at Watts Bar Dam in January 1946. The maximum in 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at the meteorological tower was 4.77 inches on September 17, 1994. Mean monthly data reveal the wettest period as late fall through early spring, with March normally the wettest month of the year. Thunderstorm activity is most predominant in the spring and summer seasons, and the maximum frequency of thunderstorm days (Table 2.3-1) is normally in July.Appreciable snowfall is relatively infrequent in the area. Snowfall data are summarized in Table 2.3-5 for Dayton[13] and in Table 2.3-6 for Chattanooga[dd] and Knoxville.[ee] The Dayton, Chattanooga and Knoxville records provide current information and offer a complete picture of the pattern of snowfall in the Tennessee River Valley from Chattanooga to Knoxville. Mean annual snowfall has ranged from 4.4 inches at Dayton to about 10 inches at Knoxville. Dayton, about halfway between those locations, averaged about 4 inches annually for an earlier period of record. Generally, significant snowfalls are limited to November through March. For the data periods presented in the tables, respective 24-hour maximum snowfalls have been 20.0, 8.0, and 18.2 inches at Chattanooga, Dayton, and Knoxville. Severe ice storms of freezing rain (or glaze) are infrequent, as discussed in the regional climatology section.Atmospheric water vapor content is generally rather high in the site area, as was indicated in the discussion of the regional climatology. Long-term relative humidity and absolute humidity data for Chattanooga are presented in Tables 2.3-7 through 2.3-9.[dd,25] The relative humidity for selected hours in Table 2.3-7 has been updated to a more current period of record. Tables 2.3-8 and 2.3-9 cannot be easily updated, but are still valid since the information in Table 2.3-7 show no major changes in humidity characteristics. Humidity data based on measurements at the onsite meteorological facility are summarized in Tables 2.3-10 and 2.3-11 for comparison with the data in Tables 2.3-8 and 2.3-9. A typical diurnal variation is apparent in Table 2.3-7. Relative humidity and absolute humidity are normally greatest in the summer.Fog data for Chattanooga,[dd] Knoxville,[ee] and Oak Ridge,[26] Tennessee, and from Hardwick [27] are presented in Table 2.3-12. These data indicate that heavy fog at the Watts Bar site likely occurs on about 35 days per year with the fall normally the foggiest METEOROLOGY 2.3-7WATTS BARWBNP-112season. Sources of data on fogs with visibilities significantly less than 1/4 mile and on durations of fogs which can be considered representative of the site have not been identified.Wind direction patterns are strongly influenced by the northeast-southwest orientation of the major topographic features, as evidenced in the onsite data, Sequoyah Nuclear Plant data[28], and the records for Knoxville[ee] and Oak Ridge.[26] The Watts Bar wind direction and wind speed data are summarized in Tables 2.3-13 and 2.3-14 (annual at 10 and 46 meters); Tables 2.3-15 and 2.3-16 (directional persistence at 10 and 46 meters); and Tables 2.3-17 through 2.3-40 (monthly at 10 and 46 meters). The annual wind roses for each level are shown in Figures 2.3-4 and 2.3-5.The most frequent wind direction at 10 meters has been from south-southwest (about 16%). The next highest frequencies (about 8%) are from the north-northeast and northwest wind. The data in Table 2.3-41 and the data in Table 2.3-13 show a predominance of wind from the north-northwest and northwest, respectively, for wind speeds less than about 3.5 mph. More discussion of this very light wind speed pattern is contained in Section 2.3.3.3. It is very significant that the frequencies of calms differ so markedly between the two sets of onsite data. It appears that the higher frequency of calm conditions is primarily a consequence of the location of the temporary meteorological facility in a "sink." The maximum wind direction persistence period at 10 meters is shown in Table 2.3-15 as 44 hours5.092593e-4 days <br />0.0122 hours <br />7.275132e-5 weeks <br />1.6742e-5 months <br /> from the south-southwest direction. The monthly summaries show some minor variation in the wind direction patterns, but the upvalley-downvalley primary and secondary frequency maxima generally are fully evident.In the summary tables for 46 meters, the upvalley-downvalley wind direction pattern is very clear and dominant. The two highest frequencies are 19% from the south-southwest wind direction and 11% from the north-northeast wind direction. The maximum wind direction persistence (Table 2.3-16) during the 17-year period was 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> from the south-southwest.Wind speed is normally lower than for most parts of the United States. The other data sources referenced in the discussion of wind direction patterns also reflect this condition. Annually, the onsite data show about 53% of the hourly average wind speeds at 10 meters were less than 3.5 mph and about 85% were less than 7.5 mph. At 46 meters, the respective frequencies show the wind speeds are relatively lighter in summer and early fall and relatively stronger in late fall, winter, and spring.Mean mixing height data for the United States have been researched by Holzworth.[16] However, his analysis has utilized data to estimate morning mixing heights (after sunrise) and mid afternoon mixing heights. Night-time mixing heights are not addressed. Average daily mixing heights are likely to be reasonably similar to the mean morning mixing heights. The seasonal and annual estimates of these mixing heights are the following: winter, about 500 meters; spring, about 530 meters; summer, about 430 meters; fall, about 350 meters; and annual, about 450 meters.

2.3-8METEOROLOGY WATTS BARWBNP-112Low-level inversion frequencies in the eastern Tennessee area have been studied by Hosler.[29] His seasonal frequencies indicate inversions in the Watts Bar area about 40% of the time in winter, 30% in spring, 45% in summer, and 45% in fall. The annual frequency is about 40%. The monthly and annual percent frequencies of hours with inversions measured at the Watts Bar onsite meteorological facility for the 20-year period, 1974 through 1993, are presented in Table 2.3-42. In comparison to Hosler's seasonal and annual values, the winter, summer, and fall values are slightly lower and the spring value is higher and has the greatest departure. The highest monthly frequency in Table 2.3-42 is about 44% in October and the lowest is about 30% in January, with an annual average of about 39%. Monthly and annual frequencies of Pasquill stability classes A-G are also presented in the same table and indicate that the most stable time of year is the fall. Korshover's statistics on atmospheric stagnation cases[15] discussed under "General Climate," provide the same indication.Table 2.3-44 presents a summary of onsite inversion persistence data, with a breakdown by stability class, for the same 20-year period discussed above.

Persistence in this case is defined as two or more consecutive hours with vertical temperature gradient (T) values > 0 degrees Celsius. However, the individual classes are allowed one-hour departures among themselves. The data analyzed correspond to the T interval between 10 and 46 meters above the ground. The longest periods of inversion were 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> in January 1982 and 42 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br /> in December 1989. Other long periods, up to 21 hours2.430556e-4 days <br />0.00583 hours <br />3.472222e-5 weeks <br />7.9905e-6 months <br />, occurred in winter. A combination of cold, dry air masses with the shorter length of the solar day in that half of the year and fresh snow on the ground surface can increase the probability for inversion durations greater than 14 hours1.62037e-4 days <br />0.00389 hours <br />2.314815e-5 weeks <br />5.327e-6 months <br /> in that time of year. The unusual case of 45 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br /> of inversion persistence at this site occurred from January 19 to 21, 1982 at the end of a 10-day period of very cold weather. Persistent fog and low overcast with a synoptic pattern of warm air advection above an initially frozen, snow-covered ground surface and very light, variable winds at the 10-meter level created this condition.[30,31,32] The unusual case of 42 hours4.861111e-4 days <br />0.0117 hours <br />6.944444e-5 weeks <br />1.5981e-5 months <br /> of inversion persistence occurred from December 29-31, 1989 during a period in which a cold front stalled to the west of the site. All of Eastern Tennessee (including the Watts Bar site) was covered by heavy fog with occasional light rain and drizzle.[33, 34, 35]Distributions of stability classes A-G are presented in Figures 2.3-6A and 2.3-6B. The average diurnal variations of stability class frequencies are quite evident, with the neutral (class D) and unstable (A, B, and C) lapse conditions predominant in the daytime and the stable classes (E, F, and G) predominant through the nighttime.2.3.2.3 Potential Influence of the Plant and Its Facilities on Local MeteorologyThe Watts Bar site is about 45 miles north-northeast of Chattanooga. It is located on the west shore of Chickamauga Lake on the Tennessee River, which flows generally southwesterly through eastern Tennessee. The site (about 700 feet MSL) is near the center of a northeast-southwest aligned valley, 10 to 15 miles wide, flanked to the west by Walden Ridge (900 to 1,800 feet MSL,) and to the east by a series of ridges reaching elevations of 800 to 1,000 feet MSL. Figure 2.1-3 consists of a map of the topographic features (as modified by the plant) of the site area for 10 miles in all METEOROLOGY 2.3-9WATTS BARWBNP-112directions from the plant. Profiles of maximum elevation versus distance from the center of the plant are shown in Figures 2.3-14 through 2.3-29 for the sixteen compass point sectors (keyed to true north) to a radial distance of 10 miles.The only plant systems which may have any pragmatic effects on the local climatic patterns of meteorological parameters discussed in the preceding section are the two natural draft cooling towers and their blowdown discharge system. During their operation, some small increase in ambient atmospheric moisture and temperature can be expected from the vapor plumes discharged from the tower tops. Also, some increase in the surface water temperature of Chickamauga Lake will be associated with the discharge of heated water from the plant (primarily the cooling tower blowdown). The vapor plumes may produce some additional localized fog on rare occasions on top of Walden Ridge (about eight miles, at its closest point, to the west-northwest). The increased lake surface temperature will likely increase the frequency of river steam fog slightly over a relatively small area of the reservoir downstream from the plant. No significant environmental impacts are expected from these effects. Discontinuities in ambient thermal structure of the atmosphere related to differential surface temperatures between land and water should produce no detectable effect on the local wind patterns or stability conditions. The physical plant structures will alter wind and stability somewhat in the immediate lee of the structures by mechanical turbulence factors produced in the building wake(s). However, these effects are expected to be generally insignificant beyond the first one or two thousand feet downwind.2.3.2.4 Local Meteorological Conditions for Design and Operating BasesAll design basis meteorological parameters are discussed or referenced in Section 2.3.1.3.2.3.3 Onsite Meteorological Measurements Program2.3.3.1 Preoperational ProgramOnsite meteorological facilities have been in operation since 1971 when a temporary 40-meter (130-foot) instrumented tower was installed. It was located about 760 meters (0.5 mile) west-southwest of the unit 1 Reactor Building and had a base elevation of 2meters (8 feet) below plant grade. The temporary facility collected wind speed, wind direction, and temperature data at the 10-meter (33-foot) and 40-meter levels until it was decommissioned in September 1973. Since the FSAR dispersion meteorology data base was collected exclusively by the permanent facility, only that facility is described in detail in this section.Permanent Meteorological FacilityThe permanent meteorological facility consists of a 91-meter (300-foot) instrumented tower for wind and temperature measurements, a separate 10-meter (33-foot) tower for dewpoint measurements, a ground-based instrument for rainfall measurements, and an environmental data station (EDS), which houses the data processing and recording equipment. A system of lightning and surge protection circuitry and proper grounding is included in the facility design. This facility is located approximately 760 2.3-10METEOROLOGY WATTS BARWBNP-112meters south-southwest of the Unit 1 Reactor Building and has a base elevation of 4 meters (11 feet) below plant grade.Data collected included: (1) wind direction and wind speed at 10, 46, and 91 meters; (2) temperature at 10, 46, and 91 meters; (3) dewpoint at 10 meters and (4) rainfall at 1 meter (3 feet). More exact measurement heights for the wind and temperature parameters are given in the EDS manual.[37] Elsewhere in the text of this document, temperature and wind sensor heights are given as 10, 46, and 91 meters.Data collection at the permanent facility began May 23, 1973, with measurements of wind speed and wind direction at 10 and 93 meters (305 feet), temperature at 1, 10, 46, and 91 meters and dewpoint, and rainfall at 1 meter. Measurements of 46-meter wind speed and wind direction and 10-meter dewpoint began September 16, 1976. Measurements of 1-meter dew point were discontinued September 30, 1977. Wind Sensors at 93-meter (actual height was 93.3 meters) were moved to their present height on May 18, 1978. Measurements of 1-meter temperature were discontinued on April 2, 1981. The 10-meter dewpoint sensor was removed from the meteorological tower and a new dewpoint sensor was installed on a separate tower 24 meters to the northwest on April 11, 1994.Instrument Description A description of the meteorological sensors follows. More detailed sensor specifications are included in the EDS Manual. Replacement sensors, which may be of a different manufacturer or model, will satisfy the Regulatory Guide (RG)1.23 (Revision 1) specifications.[36]Data Acquisition SystemThe data acquisition system is located at the EDS and consists of meteorological sensors, a computer (with peripherals), and various interface devices. These devices send meteorological data to the plant, to the Central Emergency Control Center (CECC), and to an offsite computer that enables callup for data validation and archiving. An older data collection system, which included a NOVA microcomputer, Sensor Height(Meters)DescriptionWind Direction and Wind Speed10, 46, and 91Ultrasonic wind sensor.Temperature10, 46, and 91Platinum wire resistance temperature detector (RTD) with aspirated radiation shield.Dewpoint10 Capacitive humidity sensor.Rainfall1Tipping bucket rain gauge.

METEOROLOGY 2.3-11WATTS BARWBNP-112was replaced on March 2,1989. The previous data collection system, which included a micro-VAX minicomputer, was replaced by a new system on May 24, 2010.System AccuraciesThe meteorological data collection system is designed and replacement components are chosen to meet or exceed specifications for accuracy identified in RG 1.23. The meteorological data collection system satisfies the RG 1.23 accuracy requirements. A detailed listing of error sources for each parameter is included in the EDS manual.Data Recording and DisplayThe data acquisition is under control of the computer program. The output of each meteorological sensor is scanned periodically, scaled, and the data values are stored.Meteorological sensor outputs (except rainfall) are measured every five seconds (720 per hour). Rainfall is measured continuously as it occurs. Software data processing routines within the computer accumulate output and perform data calculations to generate 15-minute and hourly averages of wind speed and temperature, 15-minute and hourly vector wind speed and direction, 15-minute and hourly total precipitation, hourly average of dewpoint, and hourly horizontal wind direction sigmas. Prior to February 11, 1987, a prevailing wind direction calculation method was used.

Subsequently, vector wind speed and direction have been calculated along with arithmetic average wind speed. Prior to February 1,1975, only one reading of temperature and dewpoint was made each hour. Between February 1, 1975 and June13, 2010, temperature and dewpoint were measured every minute (60 per hour). Selected data each 15 minutes and all data each hour are stored for remote data access. Data sent to the plant control room every minute includes 10-, 46-, and 91-meter values for wind direction, wind speed, and temperature. Data sent to the CECC computer every 15 minutes includes 10-, 46-, and 91-meter wind direction, wind speed, and temperature values. These data are available from the CECC computer to other TVA and the State emergency centers in support of the Radiological Emergency Plan, including the Technical Support Center at Watts Bar. Remote access of meteorological data by the NRC is available through the CECC computer.Data are sent from the EDS to an offsite computer for validation, reporting, and archiving.Equipment Servicing, Maintenance, and CalibrationThe meteorological equipment at the EDS is kept in proper operating condition by staff that are trained and qualified for the necessary tasks.

2.3-12METEOROLOGY WATTS BARWBNP-112Most equipment is calibrated or replaced at least every six months of service. The methods for maintaining a calibrated status for the components of the meteorological data collection system (sensors, electronics, data logger, etc.) include field checks, field calibration, and/or replacement by a laboratory calibrated component. More frequent calibration and/or replacement intervals for individual components may be conducted, on the basis of the operational history of the component type. Procedures and processes such as appropriate maintenance processes (procedures, work order/work request documents, etc.) are used to calibrate and maintain meteorological and station equipment.2.3.3.2 Operational Meteorological ProgramThe operational phase of the meteorological program includes those procedures and responsibilities related to activities beginning with the initial fuel loading and continuing through the life of the plant. This phase of the meteorological data collection program will be continuous without major interruptions. The meteorological program has been developed to be consistent with the guidance given in RG 1.23 (Revision 1) and the reporting procedure in RG 1.21 (Revision 1).[40] The basic objective is to maintain data collection performance to assure at least 90% joint recoverability and availability of data needed for assessing the relative concentrations and doses resulting from accidental or routine releases.The restoration of the data collection capability of the meteorological facility in the event of equipment failure or malfunction will be accomplished by replacement or repair of affected equipment. A stock of spare parts and equipment is maintained to minimize and shorten the periods of outages. Equipment malfunctions or outages are detected by maintenance personnel during routine or special checks. Equipment outages that affect the data transmitted to the plant can be detected by review of data displays in the reactor control room. Also, checks of data availability to the emergency centers are performed each work day. When an outage of one or more of the critical data items occurs, the appropriate maintenance personnel will be notified.In the event that the onsite meteorological facility is rendered inoperable, or there is an outage of the communication or data access systems; there is no fully representative offsite source of meteorological data for identification of atmospheric dispersion conditions. Therefore, TVA has prepared objective backup procedures to provide estimates for missing or garbled data. These procedures incorporate available onsite data (for a partial loss of data), offsite data, and conditional climatology. The CECC meteorologist will apply the appropriate backup procedures.2.3.3.3 Onsite Data Summaries of Parameters for Dispersion MeteorologyAnnual joint frequency distributions of wind speed by wind direction for Pasquill atmospheric stability classes A-G, based on the onsite data for January 1974 through December 1993 are presented in Tables 2.3-45 through 2.3-52. Tables 2.3-68 through 2.3-74 provide similar data for the time period of 1986 to 2005. Tables 2.3-76 through 2.3-83 provide similar data for the time period of 1991 to 2010. These tables are summaries of hourly data for the wind at 10 meters and vertical temperature difference (T) between 10 and 46 meters (in the form of stability classes A-G). Tables 2.3-53 METEOROLOGY 2.3-13WATTS BARWBNP-112through 2.3-60 were prepared from the hourly data for the wind at 46 meters and T between 10 and 46 meters (as stability classes A-G) for January 1977 through December 1993. The frequency distributions in Tables 2.3-45 through 2.3-51 are also displayed in Figures 2.3-7 through 2.3-13. Figures 2.3-7a through 2.3-13a provide similar information for Tables 2.3-76 through 2.3-82.The upvalley-downvalley primary wind pattern at 46 meters exists for all seven stability classes. The 10-meter wind level also shows upvalley-downvalley wind direction patterns. However, for classes E-G, the flow patterns become progressively more diffuse, with peaks from the northwest which become primary maxima in classes F and G (Tables 2.3-50 and 2.3-51). These directional peaks for the stable classes are most pronounced in the lighter wind speed ranges. The combination of these very light winds with the more stable conditions near the earth's surface indicate that very poor atmospheric dispersion conditions for ground-level plant releases of air-borne effluent occur most frequently at night and with the northwest wind direction.The period of record for the joint frequency tables for the 46-meter wind measurement level is three years shorter than the record used for the 10-meter wind level. Collection of wind data at the 46-meter level began in September 1976. Tables 2.3-53 through 2.3-60 were originally prepared with 93-meter wind data and 10- to 91-meter T data for the July 1973-June 1975 period. The 46-meter wind level is near the height of the reactor building; and the 10- to 46-meter T interval is more representative than the 10- to 91-meter interval for stability classification, particularly for poorer dispersion conditions. The 10-meter wind level is applicable to design accident analysis and to semiannual reports on routine plant operations. The 46-meter wind level is used in radiological emergency dispersion and transport calculations.The 20-year period for the tables with 10-meter wind data and the 17-year period for the tables with 46-meter wind data reasonably represent long-term dispersion conditions at the site. The length of the record is an important factor, and patterns of unusually wet weather in the 1970s and unusually dry weather in the 1980s are included in this data base. The dispersion meteorology varied during the 20-year period, but the period is climatologically representative of long-term conditions. An increase in the frequency of 10-meter level calm winds (values less than 0.6 mi/hr) occurred in the early 1990s. The calm wind frequency increased from 1.6% for 1974-1988 to about 3.0% for 1974-1993. Consistent with the increase in calms, average wind speed decreased from 4.2 mi/hr for 1974-1988 to 4.1 mi/hr for 1974-1993.Because of the time that elapsed between completion of Unit 1 and licensing of Unit 2, additional analyses were performed based on the 20-year period 1991-2010 to reflect more recent meteorological conditions. Tables 2.3-76 through 2.3-83 (and Figures 2.3-7a through 2.3-13a) present summaries of hourly data for the wind at 10 meters and vertical temperature difference (T) between 10 and 46 meters (in the form of stability classes A-G). Overall, the 1991-2010 data are comparable with data from earlier periods. However, some significant differences are apparent:

2.3-14METEOROLOGY WATTS BARWBNP-112There is a significant increase in the frequency of the G stability class (from 7.758% to 11.426%), while all other stability classes change by a much smaller rate (less the 1.6% change).The average wind speed decreased from over 4.0 miles per hour to about 3.6 miles per hour.The number of calms decreased from 4930 to 3839. While this appears to be inconsistent with the decrease in wind speeds, it likely results from changes in wind sampling instrumentation that improved measurements of low-wind speed conditions.Although no individual wind direction frequency had a difference greater than

+/-1.8%, there is a noticeable increase in winds from the southwest through north-northwest (~6.1%), with a corresponding decrease in winds from the north-northeast through east (~4.6%) and southeast through south-southwest (~1.9%).The FSAR Chapter 11 normal release evaluation was done using the meteorology data from the time period of 1986 to 2005 and is consistent with the Supplemental Environmental Impact Statement. The updated meteorology data from the time period of 1991 to 2010 as described above is reflected in FSAR section 2.3.4 and is used in the Chapter 15 accident analysis.Potential climate change associated with a global warming of the earth's lower atmosphere may occur in the Watts Bar site area. Should that occur during the life of this nuclear plant, the dispersion meteorology will be evaluated for any significant changes and consequent impacts on plant design and operation. 2.3.4 Short-Term (Accident) Diffusion Estimates2.3.4.1 ObjectiveEstimates of atmospheric diffusion for accident releases are expressed as dispersion factors (X/Q) calculated for specified time intervals based on ground-level releases from the Watts Bar Nuclear Plant. Three different set of calculations have been performed for the Watts Bar FSAR. The original FSAR calculations were based on data collected at the Watts Bar onsite meteorological facility during July 1, 1973 through June 30, 1975 and R.G. 1.4 methodology.[42] The revised X/Q values were based on onsite meteorological data for 1974 through 1993 and RG 1.145 calculation methodology.[41] The latest X/Q values are also based on the RG 1.145 calculation methodology, but use onsite meteorological data for 1991 through 2010. All data used include wind direction and wind speed at 10 meters above ground and vertical temperature difference (T) between 10 and 46 meters above ground. The latest X/Q values at the exclusion area boundary and at the outer boundary of the low population zone (LPZ) were calculated as stated below.Nomenclature for RG 1.145 MethodX/Q = centerline ground-level relative concentration (sec/m3)

METEOROLOGY 2.3-15WATTS BARWBNP-112y = lateral plume spread with meander and building wake effects (m), as a function of atmospheric stability, wind speed <<10, and distance (for distances greater than 800 meters, y = (M-1)y800m + y).y = lateral plume spread as a function of atmospheric stability and distance (m).z = vertical plume spread as a function of atmospheric stability and distance (m).x = distance from effluent release point to point at which atmospheric dispersion factors (X/Q values) are computed (m). = mean hourly horizontal wind speed at 10 meters (m/sec)M = y correction factors for stability classes D, E, F, and G from Figure 3 in RG 1.145.A = minimum containment and Auxiliary Building cross-sectional area (m2).Atmospheric dispersion factors (X/Q values) were calculated for a 1-hour averaging period and assumed to apply to the 2-hour period immediately following an accident. The following equations were used to determine these values:For stability classes D, E, F, or G and windspeeds less than 6 meters per second (m/s), the higher value from equations (1) and (2) was compared to the value from equation (3). The lower of these compared values was selected for the X/Q distributions. For wind speeds greater than 6 m/s in these classes and for all wind speeds in stability classes A, B, and C, the higher of the values from equations (1) and (2) was selected.The minimum cross-sectional area, A, for Watts Bar Nuclear plant is 1630 m2. The exclusion boundary distance is 1200 m, as shown in Figure 2.1-4b. However, to avoid possible nonconservative accident X/Qs, the distance that was used to calculate the X/Qs is 1100 m, which is the minimum distance from the outer edge of the release zone to the exclusion area boundary. The assumed release zone is a 100-m radius circular envelope, which contains all of the structures that are potential sources of accidental U10XQ1U10yzA2+------------------------------------------------=(1)XQ1U103yz----------------------------------=(2)XQ1U10yz--------------------------=(3) 2.3-16METEOROLOGY WATTS BARWBNP-112releases of airborne radioactive materials. A distance of three miles (4828 m) was used as the low population zone (LPZ) outer boundary distance.The 1-hour X/Q values for the exclusion boundary distance were distributed in the downwind 22.5-degree compass-point sectors (plume sectors) based on wind direction. Calm wind speeds (less than 0.6 mi/hr) were distributed based on the wind direction frequencies for non-calm wind speeds less than 3.5 mi/hr. The 0.5th and 5th percentile values for each sector and for all sectors combined were identified. For the LPZ distance, the 0.5th percentile and 5th percentile 1-hour values for each sector, the annual average values for each sector, and the 0.5th and 5th percentile 1-hour values for all sectors combined were determined. The annual average X/Qs were calculated from hourly average data according to guidance in Regulatory Guide 1.111 for constant mean wind direction models.[43] All calculations used an assumed wind speed of 0.6 mile per hour (0.268 m/s), which is the starting threshold of the anemometer, for hours with values less than that and thus defined as calms. Site-specific adjustment factors for terrain confinement and recirculation effects on concentrations at the LPZ distance were calculated and applied to the initial annual average X/Qs. The method used to develop these adjustment factors is the same as that discussed in the offsite dose calculation manual for Watts Bar Nuclear Plant. The 16 sector adjustment factors are the following:LPZ distance X/Qs for 8-hour, 16-hour, 3-day, and 26-day averaging periods were obtained by logarithmic interpolation between 1-hour values used for the 2-hour averaging period and annual average values. Sector values were interpolated between the 0.5th percentile 1-hour values assumed for the 2-hour time period and the annual average values for the respective sectors (e.g., between southeast sector 0.5th percentile 2-hour X/Q and southeast sector annual average X/Q). The 5th percentile overall site X/Q values were interpolated between the 5th percentile 1-hour value (assumed for the 2-hour time period) for all sectors combined and the maximum sector annual average value selected from the 16 sector annual average values.2.3.4.2 Calculation ResultsThe original FSAR values are presented with the updated bases for comparison.The 1-hour sector-specific and overall (all directions combined) atmospheric dispersion factors (X/Q) for the exclusion boundary are presented in Table 2.3-61 based on the 15-year data set of 1974-1988, in Table 2.3.61a based on the 20-year data set of 1974-1993, and in Table 2.3.61b based on the 20-year data set of 1991-2010. The maximum 0.5th and 5th percentile X/Q values from 1974-1988 are 6.040 x 10-4 sec/m3 and 5.323 x 10-4sec/m3 . The maximum 0.5th and 5th percentile X/Q values from 1974-1993 are 6.069 x 10-4sec/m3 and 5.263 x 10-5sec/m3 . The N NNE NE ENE E ESE SE SSE1.36 1.65 2.01 1.61 1.58 1.81 1.28 1.49 S SSW SW WSW W WNW NW NNW 1.81 1.77 1.86 1.47 1.00 1.49 1.00 1.00 METEOROLOGY 2.3-17WATTS BARWBNP-112maximum 0.5th and 5th percentile X/Q values from 1991-2010 are 6.382 x 10-4sec/m3 and 5.486 x 10-4sec/m3. The 1991-2010 X/Q values are slightly higher (~5%) than the earlier values.The 1-hour 0.5th percentile, 1-hour 5th percentile, and annual average X/Q values for each of the 16 plume sectors and the 1-hour overall 0.5th and 5th percentile X/Q values for the low population zone distance are presented in Table 2.3-62 based on 1974-1988, Table 2.3-62a based on 1974-1993, and Table 2.3-62b based on 1991-2010. For the maximum values in each category, the 1991-2010 X/Q values are slightly higher than the earlier values.For 8-hour, 16-hour, 3-day, and 26-day averaging periods, the X/Q values were obtained by logarithmic interpolation between the 1-hour and annual average X/Q values. The 5th percentile overall site 1-hour X/Q and the maximum sector annual average X/Q were used to produce the values given in Table 2.3-63 (1974-1988), Table 2.3-63a (1974-1993), and Table 2.3-63b (1991-2010).The 0.5th percentile 1-hour X/Q and annual average X/Q for each sector were used to produce the values given in Table 2.3-64 (1974-1988), Table 2.3-64a (1974-1993), and Table 2.3-64b (1991-2010). The respective values (and affected sectors) are:In Section 2.3.3.3, the representativeness of the onsite data summarized in the joint frequency distributions of wind direction and wind speed by atmospheric stability class was discussed. Topographic effects have been mentioned previously, but some expansion relative to the 10-meter wind data is necessary. There is a predominance of northwest wind direction frequencies for a combination of very light wind speeds and quite stable atmospheric stability conditions. The terrain at the site has a general, gradual downward slope toward the south and southeast. Apparently, this is influencing the air flow over the site during periods with very light winds and stable conditions. Dispersion meteorology used in accident analyses in Chapter 15 include X/Q values in Table 2.3-66b and 1/U values in Table 2.3-67b. These values were based on the 20-year data set for 1991-2010. Tables 2.3-66 and 2.3-67 present the same information based on 1974-1988. Tables 2.3-66a and 2.3-67a present the same information based on 1974-1993.Period1974-19881974-19931991-2010 8-hour6.765 x 10-5SE6.677 x 10-5SE8.835 x 10-5E16-hour4.629 x 10-5SE4.592 x 10-5SE6.217 x 10-5E 3-day2.032 x 10-5SE2.041 x 10-5E2.900 x 10-5E26-day6.257 x 10-6ESE6.553 x 10-6ESE9.811 x 10-6ESE 2.3-18METEOROLOGY WATTS BARWBNP-1122.3.5 Long-Term (Routine) Diffusion EstimatesThe X/Qs and Relative Deposition (D/Qs) and the respective calculation methodologies are presented in the Offsite Dose Calculation Manual for Watts Bar Nuclear Plant.The joint frequency distributions of wind speed and wind direction by stability class in Tables 2.3-68 through 2.3-74 form the basis for Tables 2.3-75a and 2.3-75b and the Offsite Dose Calculation Manual estimation of long-term X/Qs. RG 1.111 methodology is used to calculate these X/Qs from the onsite meteorological data base. Additional information is provided in the Offsite Dose Calculation Manual.Table 2.3-75a contains the X/Q's and Table 2.3-75b contains D/Q's for 10 distances within each of the 16 sector locations out to 50 miles.The long-term representativeness of the onsite meteorological data base is discussed in Sections 2.3.3.3 and 2.3.4.2.

METEOROLOGY 2.3-19WATTS BARWBNP-112REFERENCES(1)U. S. Atomic Energy Commission, A Meteorological Survey of the Oak Ridge Area, Weather Bureau, Publication ORO-99, Oak Ridge, Tennessee, November 1953, page 377.(2)Ibid., page 192.(3)Dickson, Robert R. Climates of the States - Tennessee, Climatography of the United States No. 60-40, U. S. Department of Commerce., Weather Bureau, February 1960, page 3.(aa)Nashville NWS web site (http://www.srh.noaa.gov/ohx/?n=tornadodatabase) for Cumberland County [Accessed May 12, 2010].(bb)Morristown NWS web site (http://www.srh.noaa.gov/mrx/?n=mrx_tornado_db) for Bledsoe, Hamilton, McMinn, Meigs, Rhea, and Roane Counties [Accessed May 12, 2010].(cc)NUREG/CR-4461 (revision 2), Tornado Climatology of the Contiguous United States, February 2007.(8)Thom, H.C.S. "Tornado Probabilities," Monthly Weather Review, October-December 1963, pages 730-736.(dd)U.S. Department of Commerce. Local Climatological Data, Annual Summary with Comparative Data, 2009, Chattanooga, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(ee)U.S. Department of Commerce. Local Climatological Data, Annual Summary with Comparative Data, 2009, Knoxville, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(ff)National Climatic Data Center (NCDC) Storm Event database for 1950-2009 (http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwEvent~Storms). (gg)U.S. Department of Commerce. "Climatic Summary of the United States - Eastern Tennessee," Climatography of the United States No. 10-77, U.S. Weather Bureau, Revised 1957.(13)U.S. Department of Commerce. Climatography of the United States No. 20, 1971-2000, Tennessee.(hh)NUREG/CR-3759, Lightning Strike Density fo Contiguous United States from Thunderstorm Duration Records, May 1984.(15)Korshover, J. "Climatology of Stagnating Anticyclones East of the Rocky Mountains, 1936-1970," NOAA Technical Memorandum ERL ARL-34, U.S.

Department of Commerce, Air Resources Laboratories, Silver Spring, Maryland, October 1971.

2.3-20METEOROLOGY WATTS BARWBNP-112(16)Holzworth, G. C. Mixing Heights, Wind Speeds, and Potential for Urban Air Pollution Throughout the Contiguous United States, Environmental Protection Agency, Research Triangle Park, North Carolina, January 1972.(17)U.S. Department of Commerce/U.S. Department of Agriculture. Weekly Weather and Crop Bulletin, NOAA/USDA Joint Agricultural Weather Facility, Washington, D.C., December 18, 1984, page 14. (18)Tattelman, Paul, et al. "Estimated Glaze Ice and Wind Loads at the Earth's Surface for the Contiguous United States," Air Force Cambridge Research Laboratories, L. G. Hanscom Field, Massachusetts, October 16, 1973.(19)American Meteorological Society. "Extremes of Snowfall: United States and Canada," Weatherwise, Vol. 23, December 1970, page 291.(20)American National Standards Institute, Inc. "American National Standard Building Code Requirements for Minimum Design Loads in Buildings and Other Structures." A58.1-1972, New York, New York, Figure 4, page 27.(21)Ludlum, David M. Weather Record Book, United States and Canada, Weatherwise, Inc., 1971, page 73.(ii)NRC Regulatory Guide-1.76 (revision 1), "Design-Basis Tornado and Tornado Missiles for Nuclear Power Plants, March 2007.(22)Thom, H. C. S. "New Distributions of Extreme Winds in the United States," "Journal of the Structural Division Proceedings of the American Society of Civil Engineers, Paper 6038, July 1968, pages 1787-1801.(24)Deleted by Amendment 94.(25)Magnetic tape of Chattanooga, Tennessee, National Weather Service Station data, obtained from the National Climatic Data Center, Asheville, North Carolina. Period of data analyzed, 1965-1971.(26)U.S. Department of Commerce. Local Climatological Data, Annual Summary with Comparative Data, 2009, Oak Ridge, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(27)Hardwick, W. C. "Monthly Fog Frequency in the Continental United States," Monthly Weather Review, Volume 101, October 1973, pages 763-766.(28)Tennessee Valley Authority. Final Safety Analysis Report for Sequoyah Nuclear Plant, Section 2.3, Figure 2.3-5.(29)Hosler, C. R. "Low-Level Inversion Frequency in the Contiguous United States," Monthly Weather Review, Vol. 89, September 1961, pages 319-339.

METEOROLOGY 2.3-21WATTS BARWBNP-112(30)U.S. Department of Commerce. Local Climatological Data, January 1982, Knoxville, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(31)U.S. Department of Commerce. Local Climatological Data, January 1982, Chattanooga, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(32)U.S. Department of Commerce. Daily Weather Maps, January 18-24, 1982, NOAA, Washington, D.C. (33)U.S. Department of Commerce. Local Climatological Data, December 1989, Chattanooga, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(34)U.S. Department of Commerce. Local Climatological Data, December 1989, Knoxville, Tennessee, NOAA, National Climatic Data Center, Asheville, North Carolina.(35)U.S. Department of Commerce. Daily Weather Maps, December 25-31, 1989, NOAA, Washington, D.C.(36)U.S. Nuclear Regulatory Commission. Regulatory Guide 1.23, Revision 1, " Meteorological Monitoring Programs for Nuclear Power Plants," Washington, D.C., March 2007.(37)Tennessee Valley Authority. "Watts Bar Nuclear Plant Environmental Data Station Manual."(38)Deleted by Amendment 94.(39)Deleted by Amendment 94.(40)U.S. Atomic Energy Commission. Regulatory Guide 1.21, Revision 1, "Measuring, Evaluating, and Reporting Radioactivity in Solid Wastes and Releases of Radioactive Materials in Liquid and Gaseous Effluents from Light-Water-Cooled Nuclear Power Plants," Washington, D.C., June 1974.(41)U.S. Nuclear Regulatory Commission. Regulatory Guide 1.145, Revision 1, "Atmospheric Dispersion Models for Potential Accident Consequence Assessment at Nuclear Power Plants," Washington, D.C., November 1982.(42)U.S. Atomic Energy Commission. Regulatory Guide 1.4, Revision 2, "Assumptions Used for Evaluating the Potential Radiological Consequences of a Loss of Coolant Accident for Pressurized Water Reactors," Washington, D.C., June 1974.

2.3-22METEOROLOGY WATTS BARWBNP-112(43)U.S. Nuclear Regulatory Commission. Regulatory Guide 1.111, Revision 1, "Methods for Estimating Atmospheric Transport and Dispersion of Gaseous Effluents in Routine Releases from Light-Water-Cooled Reactors," Washington, D.C., July 1977.

METEOROLOGY 2.3-23WATTS BARWBNP-112Table 2.3-1 Thunderstorm Day Frequencies Chattanooga11 National Oceanic and Atmospheric Administration, 2009 Local Climatological Data Annual Summary with Comparative Data; Chattanooga, TN (KCHA) -- period of record 62 years.Knoxville22 National Oceanic and Atmospheric Administration, 2009 Local Climatological Data Annual Summary with Comparative Data; Knoxville, TN (KTYS) -- period of record 62 years.DecemberJanuary February 0.6 1.3 2.0 0.70.81.4Winter3.92.9MarchApril May 3.64.87.1 3.24.56.9Spring15.514.6JuneJuly August9.011.18.88.59.9 6.9Summer28.825.3SeptemberOctober November4.01.41.5 3.0 1.3 1.1Autumn6.95.4Annual55.148.2 2.3-24METEOROLOGY WATTS BARWBNP-112Table 2.3-1A Extreme Wind Speeds (Page 1 of 2)This table lists the highest wind speeds observed at Chattanooga NWS, Knoxville NWS, and Watts Bar Nuclear Plant site for different time periods. Because the wind averaging periods varied, all observations were converted to 3-second gusts for comparison (based on ANSI/TIA-222-G, Annex L.a)Chattanooga, Tennessee (National Weather Service Airport Station)Period of Record = 1945-2009 (65 years).PeriodData Source (s)Date of OccurenceObserved value (averaging period)Max 3-sec gust equivalent1945-1975Chattanooga (CHA) Local Climatological Data (LCD),

1975 Annual and CHA LCD, March 1947.bMarch 24, 194782 mph(fastest mile)102 mph1976-1995CHA LCD, 1995 Annual and CHA LCD, November 1995.bNovember 11, 1995.38 mph(2-min average)47 mph (5-sec average)48 mph1996-2009CHA LCD, 2009 Annual and CHA LCD, June 2009.bJune 11, 200963 mph(3 second gust)63 mphMaximum wind speed (3-second gust equivalent) = 102 mph on March 24, 1947.Knoxville, Tennessee (National Weather Service Airport Stations)Period of Record = 1943-2009 (67 years).PeriodData Source (s)Date of OccurenceObserved value (averaging period)Max 3-sec gust equivalent1943-1974Knoxville (TYS) LCD, 1974 Annual and TYS LCD, July 1961.bJuly 15, 196173 mph(fastest mile)88 mph1975-1995TYS LCD, 1995 Annual and TYS LCD, November 1995.bNovember 11, 1995.45 mph(2-min average)54 mph (5-sec average)56 mph1996-2009TYS LCD, 2009 Annual and TYS LCD, June 2009.bApril 20, 199676 mph(3 second gust)76 mphMaximum wind speed (3-second gust equivalent) = 88 mph on July 15, 1961.

METEOROLOGY 2.3-25WATTS BARWBNP-112Watts Bar Meteorological TowerPeriod of Record = 1973-2009 (37 years).PeriodData Source (s)Date of OccurenceObserved value (averaging period)Max 3-sec gust equivalent1973-2009TVA wind observations for 10- and 91-meter wind sensorsMar 25, 197539 mph(hourly average)59 mphMaximum wind speed (3-second gust equivalent) = 59 mph on March 25, 1975.a.ANSI/TIA-222-G, Structural Standard for Antenna Supporting Structures and Antennas", effective January 1, 2006.The relevant portion of Annex L, "Wind Speed Conversions" is provided below:Fastest Mile10-min average (mph)3-sec gust (mph)Wind Speed (mph)Averaging Period (sec)Hourly mean (mph)6070 80 85 90 95100 1055058 66 70 75 78 80 857262 55 51 48 46 45 424249 56 59 62 66 69 734046 53 56 60 63 66 70Intermediate values are determined by interpolation.b.Annual and Monthly Local Climatological Data reports (for applicable cities and time periods) from the NOAA National Climatic Data Center, Asheville, North Carolina.Table 2.3-1A Extreme Wind Speeds (Page 2 of 2) 2.3-26METEOROLOGY WATTS BARWBNP-112Table 2.3-1B Storm Events for Rhea and Surrounding Counties (Page 1 of 2)These tables list the storm events for Rhea and surrounding counties from the National Climatic Data Center (NCDC) Storm Event database for 1950-2009 (http://www4.ncdc.noaa.gov/cgi-win/wwcgi.dll?wwEvent~Storms). Accessed August 20, 2010.Listed counties are adjacent to Rhea county and/or have portions of the county within 10 miles of Watts Bar Nuclear Plant. Number of occurrences is for the entire county.High winds:Search Settings (except county):Begin Date = 01/01/1950End Date = 12/31/2009 Event type = All High Wind Speed of at Least 50 Knots All other search settings default.CountyTotal Number of OccurrencesAverage Occurrences per Year *Rhea (including Watts Bar)Bledsoe Cumberland Hamilton McMinn MeigsRoane12210391275 163821442.031.72 1.52 4.58 2.72 1.362.40TOTAL EVENTS98016.33 METEOROLOGY 2.3-27WATTS BARWBNP-112Large Hail:Search Settings (except county):Begin Date = 01/01/1950End Date = 12/31/2009 Event type = Hail Hail, Size of at Least 0.75 Inches All other search settings default.CountyTotal Number of OccurrencesAverage Occurrences per Year *Rhea (including Watts Bar)Bledsoe Cumberland Hamilton McMinn Meigs Roane5348 4813074 33 330.880.80 0.80 2.17 1.23 0.55 0.55TOTAL EVENTS4196.98

• Total Number of Occurrences/60 yearsTable 2.3-1B Storm Events for Rhea and Surrounding Counties (Page 2 of 2) 2.3-28METEOROLOGY WATTS BARWBNP-112a.Cooperative Observer Stations[Dayton, Tennessee] Climatography of the United States No. 20 1971-2000 (Station - Dayton 2 SE, TN; COOP ID = 402360), National Climate Data Center, Ashville, NC.[Decatur, Tennessee] Climatography of the United States No. 10-77, "Climatic Summary of the United States - Eastern Tennessee," U.S. Department of Commerce, Weather Bureau, revised 1957 and Annual NCDC Tennessee Climatological Data for individual years during 1896-1956.b.Period of Record:Dayton = 1971-2000 (30 years).

Decatur = 1896-1930 (35 years)c.Period of Record:Dayton = 1956-2001 (46 years).

Decatur = 1896-1945, 1952-1956 (60 years).d.July 16, 1980.

e.July 28, 1930 and July 29, 1952.

f.January 21, 1985 g.Date unknown. According to Climatography of the United States No. 10-77, Decatur reported a low temperature of -20°F during 1896-1930. However, the specific date cannot be identified in the Annual NCDC Tennessee Climatological Data reports for the period. Coldest temperature for a known date was -19°F on January 26, 1940.Table 2.3-2 Temperature DataDayton and Decatur, Tennessee Cooperative Observer Dataa(Data in °F)Daily AveragebAverageDaily MaximumbAverageDaily MinimumbExtremeMaximumcExtremeMinimumcMonthDaytonDecaturDaytonDecaturDaytonDecaturDaytonDecaturDaytonDecaturJan36.240.045.950.626.529.47576-15f-9Feb40.541.651.653.029.330.37978-4-20gMar48.850.560.863.036.738.1859132 Apr57.458.570.372.044.445.092942220 May65.467.177.380.853.553.594993030 Jun73.374.684.787.261.862.01001034040 Jul76.977.687.789.866.165.3107d108e4948Aug76.076.986.989.365.064.51041074949 Sep70.171.981.085.159.158.71001063034 Oct58.360.070.474.146.145.990962319 Nov48.148.458.861.337.335.5838297 Dec39.340.349.050.829.629.97676-5-4 Annual57.559.068.771.446.346.5107d108e-15f-20g METEOROLOGY 2.3-29WATTS BARWBNP-112a.National Oceanic and Atmospheric Administration, 2009 Local Climatological Data Annual Summary with Comparative Data; Chattanooga, TN (KCHA).b.Period of Record = 1971-2000 (30 years).

c.Period of Record = 1928-2009 (82 Years).

d.Period of Record = 1940-2009 (70 Years).

e.January 1985.

f.July 1952.Table 2.3-3 Temperature DataChattanooga, Tennessee National Weather Servicea(Data in °F)Month Normal Dry BulbbMean Daily Maximumc Mean Daily MinimumcExtremeMaximumdExtremeMinimumdJanuary39.449.931.178-10eFebruary43.452.832.5791March51.462.340.0888 April59.671.747.89325 May67.780.056.79934 June75.486.364.410441 July79.689.669.0106f51August78.589.068.210550 September72.182.661.210236 October60.473.049.29422 November50.360.638.8844 December42.451.832.878-2 Annual60.070.849.3106f-10e 2.3-30METEOROLOGY WATTS BARWBNP-112*WBN =Watts Bar Nuclear Plant Meteorological tower. The meteorological facility is located 0.8 km south-southwest of Watts Bar Nuclear Plant. The rain gauge is 1 meter above ground.Dam = TVA rain gauge station 421 at Watts Bar Dam. The Dam is located 1.9 km north of Watts Bar Nuclear Plant. The rain gauge is located on the roof of the Control Building at Watts Bar Dam.**Annual totals do not equal the sum of monthly values due to rounding.a.Period of record = 1974-2008 for Watts Bar Nuclear Plant and 1940-1975 for Watts Bar Dam.b.Period of record = 1974-2008 for Watts Bar Nuclear Plant and 1941-1970 for Watts Bar Dam.

c.Period of record = 1974-2008 for Watts Bar Nuclear Plant and September 1939-September 1989 for Watts Bar Dam.d.January 1946.

e.March 1975.

f.September 1957.

g.September 17, 1994.Table 2.3-4 Precipitation DataWatts Bar Nuclear Plant and Watts Bar Dam Precipitation Data (Inches)(Data in Inches)Average No.of Days 0.01Inch or MoreaAveragebExtremeMaximumcExtremeMinimumc24-hourMaximumcMonthWBN*Dam*WBNDamWBNDamWBNDamWBNDamJan 11114.395.309.8911.670.800.933.315.31dFeb 10104.125.3412.289.790.370.743.563.50 Mar 11114.505.6212.33e11.751.431.323.495.00Apr 9103.524.568.728.660.410.803.693.10 May 1094.003.5711.9410.940.730.564.263.20 Jun 993.423.8110.2912.300.130.034.443.73 Jul 10103.865.1411.4112.500.250.503.704.80 Aug 892.963.207.917.130.020.523.613.19 Sep 773.453.698.5514.78f0.460.454.77g4.50Oct 762.592.906.527.910.000.003.093.05 Nov 984.304.138.8514.060.730.942.644.63 Dec 11104.315.3111.9212.081.320.304.724.15 Annual11111045.4352.57 METEOROLOGY 2.3-31WATTS BARWBNP-112a.Climatography of the United States, No. 20, 1971-2000 (COOP ID = 402360).b.Derived from Snow Climatology and 1971-2000 daily data.

c.Derived from 1971-2000 daily data.

d.February 1979 e.March 13, 1993.Table 2.3-5 Snowfall Data (Inches) Dayton, Tennessee(Data in Inches)MonthAveragea,bMaximum Monthlya,cHighest Dailya,cJanuary1.89.77.2February1.613.3d7.5March0.88.08.0eApril0.12.72.7May000 June000 July000 August000 September000 October000 NovemberTraceTraceTrace December0.11.11.0 Annual4.4 2.3-32METEOROLOGY WATTS BARWBNP-112

• Value is between 0.00 and 0.05.a. Local Climatological Data, Annual Summary with Comparative Data, 1983 and 2009, Chattanooga, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, N.C.b. Local Climatological Data, Annual Summary with Comparative Data, 1983 and 2009, Knoxville, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, N.C.c. Period of record for monthly normal is 30 years (1971-2000).

d. Period of record for maximum monthly and maximum 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> events is 72 years for Chattanooga and 65 years for Knoxville.For Chattanooga, the maximum monthly and maximum 24-hour event was 20.0 inches during March 1993.For Knoxville, the maximum monthly event was 23.3 inches during February 1960 and the maximum 24-hour event was 18.2 inches during November 1952.e. Another site had the highest maximum monthly event for the Knoxville locality -- 25.7 inches in February 1895.Table 2.3-6 Snowfall DataChattanooga and Knoxville, Tennessee NWS(Data in Inches)NormalcMaximum MonthlydMaximum in 24 Hrs.dMonthChattanoogaKnoxvilleChattanoogaKnoxvilleChattanoogaKnoxvilleJanuary2.03.710.215.110.212.0February1.33.010.423.38.717.5 March1.21.620.020.220.014.1April0.20.82.810.72.810.7May00tracetracetracetrace June00 trace tracetracetraceJuly00 0 000August00 0trace0trace September00 trace tracetracetraceOctober**tracetracetracetraceNovember*0.12.818.22.818.2 December0.10.79.112.28.98.9Annual4.89.920.023.3e20.018.2 METEOROLOGY 2.3-33WATTS BARWBNP-1121.Local Climatological Data, Annual Summary with Comparative Data, 1983 and 2009, Chattanooga, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, N.C. (Period of Record = 1971-2000).2.Local Climatological Data, Annual Summary with Comparative Data, 1974, Chattanooga, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, N.C. (Period of Record = 1941-1974 for hour 0100 and 1931-1974 for hours 0700, 1300, and 1900).Table 2.3-7 Average Relative Humidity Data (Percent) - Selected Hours Chattanooga, Tennessee*(Eastern Standard Time)Updated Data (1971-2000)1Original Date (1931/41-1974)2MonthHour0100Hour0700Hour1300Hour1900Hour0100Hour0700Hour1300Hour1900January7981636680826368February7782585878805760 March7682555377815356 April7885494978814952 May8789555886855156 June8790576088855460 July8790576289895764 August8892586490915766 September8992596689905566 October8891556888895267 November8386596882845565 December8083626882836270 Annual8387576284855563 2.3-34METEOROLOGY WATTS BARWBNP-112*Analysis based on data tapes obtained from National Climatic Data Center, Asheville, North Carolina. Observations recorded on tape are for 3-hourly synoptic times.Table 2.3-8 Relative Humidity (Percent) National Weather Service StationChattanooga, Tennessee*January 1965-December 1971MonthAverageAvg. Max.Avg. Min.Extreme Max.Extreme Min.December75.383.667.7100.010.7January72.374.669.5100.018.6 February 67.076.858.0100.012.1 Winter71.578.365.1100.010.7March64.171.455.0100.013.8 April64.672.356.9100.012.8 May71.177.165.0100.019.0 Spring66.673.658.9100.012.8June72.377.468.3100.023.1 July75.580.171.2100.026.9 August78.482.975.3100.032.5 Summer75.480.171.6100.023.1September79.784.075.2100.026.0 October76.683.071.1100.018.2 November72.679.766.2100.016.1 Fall76.382.270.8100.016.1 Annual72.578.666.6100.010.7 METEOROLOGY 2.3-35WATTS BARWBNP-112*Analysis based on data tapes obtained from National Climatic Data Center, Asheville, North Carolina. Observations recorded on tape are for 3-hourly synoptic times.Table 2.3-9 Absolute HumidityChattanooga, Tennessee NWS(Data in gm/m3)January 1965-December 1971*MonthAverageAvg. Max.Avg. Min.Extreme Max.Extreme Min.December 5.8 7.2 4.516.10.9January 4.8 5.3 4.514.00.4 February 4.5 5.8 3.414.10.8Winter 5.0 6.1 4.116.10.4March 5.9 7.2 4.616.61.1 April 8.610.3 7.020.12.4 May11.412.8 9.919.63.4 Spring8.610.1 7.120.11.1June14.715.913.522.74.9 July16.717.715.624.28.6 August17.018.216.025.89.6 Summer16.117.315.025.84.9September14.816.213.623.64.2 October10.011.68.520.83.0 November6.57.95.117.81.2 Fall10.411.99.123.61.2 Annual10.011.48.825.80.4 2.3-36METEOROLOGY WATTS BARWBNP-112*Data were collected at the Watts Bar Meteorological tower located 0.8 km SSW of Watts Bar Nuclear Plant. Temperature and dewpoint instruments at 4 feet above ground.Table 2.3-10 Relative HumidityWatts Bar Nuclear Plant Meteorological Facility(Sheet 1 of 2)(Data in Percent)July 1, 1973 - June 30, 1975 *MonthAverageAverage MaximumAverage MinimumExtreme Maximum Extreme Minimum December71.285.153.8100.030.2January73.687.554.5100.010.4 February70.387.550.9100.021.4 Winter71.786.753.1100.010.4March69.988.449.8100.022.6 April64.587.838.6100.011.2 May78.394.156.9100.028.3 Spring70.990.148.5100.011.2June75.291.655.0100.034.6 July76.293.448.4100.010.1 August78.793.655.1100.036.7 Summer76.792.952.9100.010.1September77.991.856.8100.029.3 October71.589.943.2100.019.7 November69.087.047.496.526.9Fall72.889.649.1100.019.7 Annual73.0 METEOROLOGY 2.3-37WATTS BARWBNP-112*Data were collected at the Watts Bar Meteorological tower located 0.8 km SSW of Watts Bar Nuclear Plant. Temperature and dewpoint instruments are 10 meters (33 feet) above ground.Relative Humidity (RH) is calculated from simultaneous 10-m temperature (T) and 10-m dewpoint (Td) using equations from El Paso NWS website (http://www.srh.noaa.gov/epz/?n=wxcalc).units:RH = percent (%)T, Td = degrees celsius (°C)e, es = millibars (mb)Table 2.3-10 Relative HumidityWatts Bar Nuclear Plant Meteorological Facility(Sheet 2 of 2)(Data in Percent)January 1, 1976 - December 31, 2008 *MonthAverageAverage MaximumAverage MinimumExtreme Maximum Extreme Minimum December71.289.752.7100.018.1January68.787.651.1100.014.3 February66.087.846.5100.011.6 Winter68.688.450.1100.011.6March64.088.343.0100.010.4 April64.591.242.1100.011.2 May72.595.550.5100.018.3 Spring67.091.745.2100.010.4June75.095.953.1100.020.0 July76.895.955.1100.019.6 August76.495.654.0100.025.6 Summer76.195.854.1100.019.6September75.994.753.2100.018.8 October73.594.449.9100.015.5 November71.391.750.3100.012.0Autumn73.693.651.1100.012.0 Annual71.3RHees-----*100 where: e6.11* 10 7.5*Td237.6Td+--------------------------== es6.11* 10 7.5*Td237.6T+-----------------------=

2.3-38METEOROLOGY WATTS BARWBNP-112*Data were collected at the Watts Bar Meteorological tower located 0.8 km SSW of Watts Bar Nuclear Plant. Temperature and dewpoint instruments at 4 feet above ground.Table 2.3-11 Absolute HumidityWatts Bar Nuclear Plant Meteorological Facility(Sheet 1 of 2)(Data in gm/m3)July 1, 1973 - June 30, 1975 *MonthAverageAverage MaximumAverage MinimumExtreme Maximum Extreme Minimum December5.26.64.014.51.5January6.17.84.313.21.0 February5.77.34.315.11.5 Winter5.77.24.215.11.0March7.18.95.314.71.8 April8.310.36.417.72.0 May13.715.911.621.54.9 Spring9.711.77.821.51.8June14.717.212.422.17.8 July17.119.313.722.71.8 August16.718.914.924.410.1 Summer16.218.413.724.41.8September14.416.512.521.94.9 October9.211.07.717.73.1 November7.08.75.416.62.1Fall10.212.18.521.92.1 Annual10.4 METEOROLOGY 2.3-39WATTS BARWBNP-112 *Data were collected at the Watts Bar Meteorological tower located 0.8 km SSW of Watts Bar Nuclear Plant. Temperature and dewpoint instruments are 10 meters (33 feet) above ground.Absolute Humidity (AH) is calculated from simultaneous 10-m temperature (T) and 10-m vapor pressure (Pw = e from Table 2.3-10) using equation from User's Guide - Vaisala HUMICAP Humidity and Temperature Transmitter Series HMT330.units:AH = grams/cubic meter (g/m3)T = degrees kelvin (°K)Pw = millibars (mb)Table 2.3-11 Absolute HumidityWatts Bar Nuclear Plant Meteorological Facility(Sheet 2 of 2)(Data in gm/m3)January 1, 1976 - December 31, 2008 *MonthAverageAverage MaximumAverage MinimumExtreme Maximum Extreme Minimum December5.16.54.216.50.5January4.45.73.614.70.4 February4.76.13.914.20.6 Winter4.86.13.916.50.4March6.17.85.017.60.8 April8.310.36.818.81.6 May11.914.010.424.03.1 Spring8.810.77.424.00.8June15.417.513.624.85.3 July17.519.515.627.17.1 August16.919.015.127.67.2 Summer16.618.714.827.65.3September14.016.012.321.93.8 October9.711.58.321.91.7 November6.98.45.719.01.2 Autumn10.211.98.721.21.2 Annual10.1AH = 216.68

• PwT--------

2.3-40METEOROLOGY WATTS BARWBNP-112*Mean number of days with heavy fog, which is defined by horizontal visibility 1/4 mile or less.a.Local Climatological Data, Annual Summary with Comparative Data, 2009, Chattanooga, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, North Carolina. Period of record = 46 years. b.Local Climatological Data, Annual Summary with Comparative Data, 2009, Knoxville, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, North Carolina. Period of record = 46 years. c.Local Climatological Data, Annual Summary with Comparative Data, 2009, Oak Ridge, Tennessee, U.S. Department of Commerce, NOAA, NCDC, Asheville, North Carolina. Period of record = 10 years. d.Hardwick, W. C. "Monthly Fog Frequency in the Continental United States", Monthly Weather Review, Volume 101, October 1973, pages 763-766.Table 2.3-12 Fog Data* MonthChat.aKnox.bOak R.cEst. from Hardwickd January2.82.62.51 February1.51.81.32 March1.21.71.81 April1.31.31.71 May2.22.25.52 June1.61.84.82 July1.52.15.82 August1.93.55.23 September3.33.87.54 October4.84.37.86 November3.32.94.54 December2.42.44.33 Annual27.830.452.733 METEOROLOGY 2.3-41WATTS BARWBNP-112TOTAL HOURS OF VALID W IND OBSERVATIONS169102TOTAL HOURS OF OBSERVATIONS175320 RECOVERABILITY PERCENTAGE96.5TOTAL HOURS CALM4990METEOROLOGICAL FACILITY: W ATTS BAR NUCLEAR PLANTW IND SPEED AND DIRECTION M EASURED AT 9.72 M ETER LEVELM EAN W IND SPEED = 4.07Date Printed: 29-NOV-94 NOTE: TOTALS AND SUBTOTALS ARE OBTAINED FROM UNROUNDED NUM BERSTable 2.3-13 Joint Percentage Frequencies of Wind Speed By Wind Direction Disregarding Stability ClassWatts Bar Nuclear PlantJan 1, 1974 - Dec 31, 1993WINDDIRECTIONWIND SPEED(MPH)CALM0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TOTALN0.1250.7071.3991.6771.4451.5780.0740.0000.0007.004NNE0.1240.6151.4072.0431.9562.1270.1120.0000.0008.446NE0.1600.7281.9571.7831.0510.6950.0110.0010.0006.386ENE0.2421.1122.9441.2960.4250.1500.0020.0000.0006.170E0.1510.9921.5400.5830.1380.0450.0020.0000.0003.451ESE0.0590.4380.5460.1920.0280.0130.0010.0000.0001.277SE0.0860.6090.8340.3190.0760.0480.0140.0000.0001.985SSE0.1450.8921.5400.5980.1760.1410.0370.0030.0003.532S0.2221.1062.6211.8440.8690.7320.2040.0210.0017.620SSW0.2811.2093.5044.0173.0013.1150.6110.0480.00015.786SW0.2371.4792.5061.5160.7560.4700.0720.0040.0017.040WSW0.2391.8882.1350.6660.3720.3170.0820.0040.0005.702W0.2352.1041.8430.6460.5460.6530.0900.0080.0026.127WNW0.2122.0521.5050.6370.5970.8210.0860.0050.0005.915NW0.2662.4552.0610.7650.7221.0260.1020.0020.0007.354NNW0.1681.3541.4630.9750.9211.2420.0820.0010.0006.205SUBTOTAL2.95119.73829.82319.55413.08113.1721.5830.0950.003100.00 2.3-42METEOROLOGY WATTS BARWBNP-112THIS PAGE INTENTIONALLY BLANK METEOROLOGY2.3-43WATTS BARWBNP-112Table 2.3-14 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindDirection( Wind Speed(Mph)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENE ENEEESE SESSES SSWSWWSW WWNWNW NNWSubtotal0.1090.1890.272 0.2150.1090.056 0.0610.1120.191 0.2370.1400.085 0.0680.0560.062 0.0652.0260.5610.8091.144 1.0130.7740.418 0.3870.5740.765 0.7450.5840.448 0.4280.3900.388 0.3879.813 1.2842.3813.460 2.6221.0610.526 0.6421.3132.456 3.2611.7870.981 0.7210.5490.661 0.71024.413 1.1762.2602.490 1.2570.4880.279 0.3340.6711.791 4.3682.0800.747 0.4280.4160.486 0.62219.894 1.3272.1041.633 0.5790.1950.059 0.1030.2170.887 3.4841.7320.514 0.3960.4500.650 0.71415.1432.8222.9401.555 0.3930.0870.026 0.0930.2400.875 4.5552.3660.764 0.8591.2431.398 1.55421.7700.4190.4370.126 0.0240.0080.002 0.0240.0970.314 1.9010.7140.294 0.3270.4380.391 0.4576.0450.0190.0080.002 0.0000.0000.0010.0080.0180.093 0.3550.1030.073 0.0490.0310.027 0.0210.8080.0000.0000.000 0.0000.0000.000 0.0000.0000.013 0.0320.0150.017 0.0070.0010.001 0.0010.087 7.78811.12810.6826.2032.7221.367 1.6523.2427.38618.9399.5213.922 3.2823.5734.065 4.530100.000Total Hours Of Valid Wind Observations142902Total Hours Of Observations149016Recoverability PercentageTotal Hours Calm95.92895Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 5.6981Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-44WATTS BARWBNP-112Table 2.3-15 Wind Direction Persistence Data Disregarding Stability, Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 (Sheet 1 of 2)Wind DirectionACC. ACC.NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWCALMTOTAL TOTALFREQUENCY 23 456 78910111213 141516 171819 202122 232425 262728 293031 32>32 TOTAL 860360 241159112747536 29 251514554 433 411 101 000 000 002032887465 298169160937842 54 301916 13148 968 657 050 100 000 032396906388 25314689 703920 14934 403 120 000 000 100 000 001952938428 2201226437201112412 011 000 000 000 000 000 001861487201713018720 0

000 001 000 000 000 000 000 0081713444910 000 0

000 000 000 000 000 000 000 0018820877 27115 300 0

030 000 000 000 000 000 000 00334462196773021452 2

010 000010 000 000 000 000 008011085496 275174102502918 14 13113 220 100 000 101 000 000 0022771242697 531417289 269187139 123997962 494221 202219 1026 633 633 040 2743621030392 21913046 3826178 512 330 110 010 000 000 000 001923782328 1326742 20205 6

402 011 010 000 000 000000 001411879353 18211461 20349 9

632 111 001 000 000 000 000 001676783328 17912768 34181781222 201 001 000 000 000 000 001582988481 25516299 635622 121124 012 112 010 100 210 000 002167802373 21211481 522530 131176 362 201 030 111 001 000 0017473441861137261452923 20945 620 000 000 000 000 000 00919128175793 329420451318879643391 324 238151124887845 393735 201314 10961044 040 210284452844515628983565414496 317822991656 1265941703552 428340262 217178141 1068673 594940 342420 161612 1210100.0054.94 34.5823.0015.8111.178.085.82 4.45 3.312.471.94 1.501.200.92 0.760.630.50 0.370.300.26 0.210.170.14 0.120.080.07 0.060.060.04 0.040.04 METEOROLOGY2.3-45WATTS BARWBNP-112Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At The 9.72 Meter Level MaximumPersistence (Hours)25402616165121825442118191927281550.0%80.0%90.0%99.0%

99.9% 3 6 816 22 3 6 920 37 3 5 61118 2 4 510 15 2 3 4 7162334 5 2 3 4 712 2 3 4 818 3 4 61117 4 81121 34 2 4 510 18 2 4 510 16 2 4 510 16 3 461116 3 5 61126 35 615 25 36813 15Table 2.3-15 Wind Direction Persistence Data Disregarding Stability, Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 (Sheet 2 of 2)Wind DirectionACC. ACC.NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWCALMTOTAL TOTALFREQUENCY METEOROLOGY2.3-46WATTS BARWBNP-112Table 2.3-16 Wind Direction Persistence Data Disregarding Stability, Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93 (Sheet 1 of 2)PersistenceWind Direction ACC.ACC.(Hours)NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWCALMTOTALTOTALFREQUENCY 2 3 4 5 6 7 8 91011121314 151617 181920 21 222324 252627 2829772348227168 1227754 472720 201118 1054 230 1

210 001 101014503360182 16512873 594636 362315 23167 987 5

631 302 011137539403275 16912270 573518 311410 1042 311 2

100 022 0082235320098 593118784 110 000 000 0

000 000 0032310245 12432 000 000 000 000 0

000 000 0014532164 000 000 000 000 000 0

000 000 00174601911701 200 000 000 000 0

000 000 004141346528 1065 121 010 000 100 0

000 000 0010154382121247934219118 320 000 000 0

000 000 001244735577391 28524917514812499 816064 543129 31161751495 532 571088503344191 1307758 431613 10106 301 113 2

120 201 004891488745 26138 813 221 200 001 0

000 000 003701238247 331314 1051 332 120 000 0

000 000 0036717112464 553114 1467 302 120 010 0

000 000 0041220510677 503717 21146663 512 101 0

100 000 1049124712079 493131 178111024 121 110 1

000 000 002451287338 401811815 101 000 000 0

001 000 0010522476930601834 1283870572 451304232 2071351261106346 493130 16 251571058 78248081428695176457 462333402470 189814471143911704569 443333270 224175144114987358 514136 2821100.0057.5938.3626.03 18.6413.469.967.655.834.61 3.672.842.29 1.791.341.09 0.900.710.58 0.46 0.400.290.23 0.210.170.150.110.08 METEOROLOGY2.3-47WATTS BARWBNP-112Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At The 46.36 Meter Level3031 32>32 TOTAL 0 0 0 01941 1 0 0 12733 0 0 0 02908 0 0 0 01602 0 0 0 0491 0 0 0 0197 0 0 0 0274 0 0 0 0668 0 0 0 01956 0 2 0 84475 0 0 1 02507 0 0 0 08360 0 0 0709 0 0 0 0862 0 0 0 0972 0 0 0 011070 0 0 0570 1 2 1 924808 13 12 10 9 0.05 0.05 0.04 0.04 MAXIMUMPERSISTENCE (HOURS)28332713 85 91813483220161928212450.0%80.0%90.0%99.0%

99.9% 3 6 816 27 3 6 92029 3 5 714 26 2 4 5 912 2 3 4 7 82345 5 2 3 4 8 9 2 3 4 818 2 4 510 13 4 81223 34 3 5 713 25 2 4 51120 2 4 613 16 3 5 612 19 35715 2835713 193561124Table 2.3-16 Wind Direction Persistence Data Disregarding Stability, Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93 (Sheet 2 of 2)PersistenceWind Direction ACC.ACC.(Hours)NNNENEENEEESESESSESSSWSWWSWWWNWNWNNWCALMTOTALTOTALFREQUENCY METEOROLOGY2.3-48WATTS BARWBNP-112Table 2.3-17 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJanuary (74-93) Wind DirectionWind Speed(MPH) CALM 0.6-1.4 1.5-3.4 3.5-5. 5.5-7.47.5-12.4 12.5-18.4 18.5-24.4>=24.5 Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL0.1230.1360.1810.238 0.1300.0430.0600.1160.1300.2110.1500.1790.188 0.1680.2080.164 2.4250.7670.5270.8701.1170.8290.3290.336 0.6580.5550.836 0.8491.1441.445 1.4591.6921.14414.5561.4111.8912.3433.1101.4860.4320.7401.4111.7542.9111.8222.0411.904 1.5212.0071.76728.5501.5552.4181.8841.1100.3700.1230.144 0.3291.1303.569 1.5141.2400.980 0.9591.1441.28819.7551.7952.3771.0690.356 0.1510.0340.027 0.1030.7062.466 0.8700.8771.185 1.0891.2601.48015.8442.1582.1510.5480.1100.0960.0210.000 0.0140.4322.850 0.5550.7331.329 1.6231.9042.04816.5700.0750.1100.0000.000 0.0000.0000.000 0.0270.1780.569 0.1510.3150.288 0.1580.2120.144 2.226 0.0000.0000.0000.000 0.0000.0000.000 0.0210.0140.021 0.0000.0070.014 0.0000.0000.000 0.075 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0007.8839.6096.8946.040 3.0620.9811.307 2.6784.89713.4315.9116.5367.333 6.9768.4288.034100.000Total Hours Of Valid Wind Observations14599Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm98.1354Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.57 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-49WATTS BARWBNP-112Table 2.3-18 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJanuary (77-93) WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0860.1400.1700.136 0.0850.0300.036 0.0650.1040.142 0.0900.0660.050 0.0410.0420.050 1.3330.3720.5650.6870.678 0.5980.3150.380 0.3720.5250.412 0.4850.4280.291 0.3630.2580.307 7.0351.5102.5043.0452.310 1.2600.3390.420 1.0581.7692.714 1.4861.0180.808 0.5410.6700.79222.2441.1472.4962.7221.018 0.2180.0890.073 0.3311.1713.497 1.6880.7670.420 0.6140.7430.77517.7691.4462.6171.9710.533 0.0570.0160.073 0.1370.5092.859 1.6720.6700.775 0.9051.2201.07416.5333.4003.4731.7450.226 0.0240.0000.016 0.0240.4284.0382.8111.3731.615 2.3672.6092.42326.5730.6780.5570.0570.000 0.0000.0000.000 0.0080.1211.3810.7430.5170.759 0.8800.9530.695 7.3500.0000.0000.0000.000 0.0000.0000.008 0.0000.0650.291 0.1050.1780.218 0.0570.0650.000 0.9850.0000.0000.0000.000 0.0000.0000.000 0.0000.0160.032 0.0320.0650.032 0.0000.0000.000 0.1788.63912.35210.3954.901 2.2410.7891.006 1.9954.70815.3679.1125.0824.969 5.7686.5606.116100.000Total Hours Of Valid Wind Observations12381Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm97.9165Meteorological Facility: Watts Bar Nuclear PlantWind Speed and Direction Measured at 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 6.34 Note: Totals and Subtotals are Obtained From Unrounded Numbers METEOROLOGY2.3-50WATTS BARWBNP-112Table 2.3-19 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantFebruary (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.1200.1280.1700.2580.1180.0350.049 0.0690.1160.166 0.1380.1520.1470.1170.1800.123 2.0850.6930.7450.8961.536 0.8580.3310.474 0.5190.6250.806 0.8661.0841.302 1.1371.7241.03114.6281.7011.8072.4773.584 1.4910.3610.497 0.8511.6792.492 1.8821.9351.6111.1891.8441.41526.8161.8072.4922.0781.250 0.4670.0980.196 0.3390.9942.989 1.5580.9860.858 0.7151.0241.34019.1901.6342.4991.2500.354 0.1960.0450.038 0.1360.4742.612 1.0010.6470.768 0.9491.2871.23515.1252.3192.8680.8960.128 0.0830.0000.060 0.1280.5503.433 1.0840.7981.182 1.4381.7772.19818.9420.0830.1510.0300.0000.0080.0000.000 0.0380.2941.242 0.1730.2560.188 0.2560.1960.173 3.0870.0000.0000.0000.000 0.0000.0000.000 0.0080.0230.053 0.0080.0080.008 0.0230.0000.000 0.1280.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0008.35710.6917.7967.108 3.2200.8711.314 2.0874.75313.7926.7115.8666.064 5.8248.0327.516100.000Total Hours Of Valid Wind Observations13283Total Hours Of Observations13560Recoverability PercentageTotal Hours Calm98.0277Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.84 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-51WATTS BARWBNP-112Table 2.3-20 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantFebruary (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0730.1390.2030.137 0.0560.0260.026 0.0400.0760.086 0.0670.0440.040 0.0310.0330.045 1.1220.3800.6540.7600.830 0.5030.2560.203 0.3000.3800.336 0.3360.2740.318 0.3180.2380.318 6.4041.3962.7294.1602.491 0.8480.3710.433 0.6801.4571.749 1.2810.8040.662 0.4240.5560.76820.8111.2283.0743.1181.316 0.3970.1590.168 0.3440.8392.562 1.9520.7680.495 0.4590.4150.83918.1341.9262.5262.2610.742 0.1320.0180.035 0.0880.4862.208 1.6250.5300.477 0.6011.0420.95415.6523.8253.8421.9260.389 0.0530.0000.071 0.1060.6274.107 2.8351.1571.334 2.0052.5792.25227.1090.8210.7070.2740.035 0.0350.0000.009 0.0970.4242.1291.0860.5300.592 0.8040.6980.8749.1160.0350.0000.0000.000 0.0000.0000.000 0.0350.1150.627 0.1940.1590.150 0.0880.0440.071 1.5190.0000.0000.0000.000 0.0000.0000.000 0.0000.0090.053 0.0260.0350.009 0.0000.0000.000 0.1329.68413.67212.7025.940 2.0250.8300.945 1.6924.41313.8579.4034.3024.077 4.7305.6066.122100.000Total Hours Of Valid Wind Observations11321Total Hours Of Observations11520Recoverability PercentageTotal Hours Calm98.3127Meteorological Facility: Watts Bar Nuclear PlantWind Speed and Direction Measured at 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 6.68 Note: Totals and Subtotals are Obtained From Unrounded Numbers METEOROLOGY2.3-52WATTS BARWBNP-112Table 2.3-21 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantMarch (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0970.1030.1420.2230.1120.0420.059 0.0750.1010.137 0.121 0.1380.1270.109 0.1420.0921.8200.5460.7700.9241.365 0.9030.3920.581 0.6090.6580.721 0.868 1.1691.5191.246 1.5330.84714.6531.5961.4982.2123.563 1.5750.5460.714 1.0431.5682.303 1.806 1.8831.2881.155 1.6031.19025.5461.6591.8061.4211.0290.5110.1540.280 0.5531.3163.402 1.624 0.6790.6930.651 1.0361.00817.8241.4841.7291.0010.504 0.1610.0700.1190.2170.6583.171 1.155 0.4690.5390.616 0.8821.25314.0302.3312.5761.1130.175 0.0350.0210.168 0.4061.3445.419 1.043 0.5741.0991.330 1.8902.05121.5770.1890.1120.0280.014 0.0000.0070.105 0.1330.5881.9110.1890.1050.2100.161 0.2660.2104.2290.0000.0000.0000.000 0.0000.0000.000 0.0000.0910.063 0.000 0.0140.0630.028 0.0210.0070.2870.0000.0000.0000.000 0.0000.0000.000 0.0000.0070.000 0.007 0.0000.0210.000 0.0000.0000.0357.9038.5956.8426.874 3.2981.2332.026 3.0366.33217.1286.814 5.0325.5605.296 7.3746.659100.000Total Hours of Valid Wind Observations14284Total Hours of Observations14880Recoverability PercentageTotal Hours Calm96.0260Meteorological Facility: Watts Bar Nuclear PlantWind Speed and Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 5.17 Note: Totals and Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-53WATTS BARWBNP-112Table 2.3-22 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantMarch (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1060.1720.2640.157 0.0770.0490.033 0.0680.1110.128 0.089 0.0560.0510.040 0.0540.0501.5040.4490.5810.9300.606 0.5150.2820.183 0.2160.4490.432 0.349 0.2820.3160.249 0.3240.2416.4051.3792.3763.6142.093 0.8140.5570.390 0.9551.4621.778 1.180 0.6890.5650.432 0.6060.61519.5051.2462.4012.3680.972 0.5150.2410.332 0.5571.2132.725 1.570 0.7140.4070.474 0.5570.56516.8551.3461.6531.2880.573 0.2820.0750.1160.1910.7062.475 1.886 0.5650.3410.507 0.8220.87213.6983.8793.3151.8940.498 0.1500.0420.174 0.5571.2055.076 3.157 0.9051.0971.545 2.0192.09327.6040.7970.4980.1990.058 0.0170.0000.150 0.4320.8313.780 1.595 0.5150.6400.764 0.7560.98912.0200.0660.0000.0000.000 0.0000.0080.066 0.0330.3160.972 0.307 0.1250.0750.083 0.0660.0582.1760.0000.0000.0000.000 0.0000.0000.000 0.0000.0580.058 0.042 0.0170.0250.017 0.0080.0080.2339.26910.99610.5564.958 2.3701.2531.445 3.0096.34917.423 10.1733.8693.5154.1105.2135.491100.000Total Hours Of Valid Wind Observations12038Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm95.2181Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 7.13 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-54WATTS BARWBNP-112Table 2.3-23 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantApril (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0740.0750.1130.168 0.1220.0560.059 0.1010.1340.178 0.166 0.1770.1600.126 0.1520.1011.9610.6510.5280.8321.223 1.1220.6080.695 0.7821.1361.028 1.389 1.9181.7441.585 1.7151.07818.0340.9841.1291.6572.468 1.5630.6300.601 1.4331.8162.888 2.258 1.9761.7731.201 1.6431.15825.1771.2811.7881.1000.970 0.7670.3550.391 0.7961.5923.495 1.534 0.7890.7450.709 0.8320.87618.0201.2301.6211.0130.528 0.2240.0220.145 0.2750.9053.597 0.890 0.4200.6440.637 0.8250.86113.8371.4762.1280.7380.232 0.0580.0070.043 0.2971.1005.797 0.695 0.5361.0201.426 1.7441.46218.7580.1300.1810.0220.000 0.0000.0000.000 0.1450.5791.578 0.174 0.1590.2320.224 0.2320.1093.7630.000 0.0000.0000.000 0.0000.0000.000 0.0070.0940.282 0.036 0.0140.0070.000 0.0070.0000.4490.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0005.8287.4505.4765.588 3.8561.6771.933 3.8357.35618.8427.142 5.9886.3265.909 7.1515.645100.000Total Hours Of Valid Wind Observations13818Total Hours Of Observations14400Recoverability PercentageTotal Hours Calm96.0271Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.87 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-55WATTS BARWBNP-112Table 2.3-24 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantApril (77-93)WindDirectionWind Speed (MPH)WindCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0870.1570.2280.192 0.0750.0470.045 0.0920.1580.1980.1190.0750.0650.044 0.0580.0501.6910.4010.7060.8460.750 0.3920.2620.218 0.4530.5840.610 0.418 0.3400.3840.305 0.2790.2797.2280.9591.7352.7112.241 0.7760.4710.480 0.9851.8832.467 1.439 0.8280.6360.384 0.6190.50619.1190.8201.6561.5000.942 0.4880.3400.384 0.8201.6913.470 1.953 0.7500.5840.453 0.5490.56716.9660.9681.6741.1770.619 0.2880.1390.174 0.3231.0553.862 1.883 0.6710.4710.453 1.0030.68915.4492.4672.6421.4470.514 0.2270.0260.166 0.4801.1076.164 3.025 1.1421.1941.857 2.0141.90126.3730.4620.6450.2090.009 0.0090.0000.017 0.2530.5753.662 1.412 0.5670.6451.0200.6100.75010.8460.0090.0090.0000.000 0.0000.0000.000 0.0870.2880.828 0.314 0.1920.0700.052 0.0870.0351.9700.0000.0000.0000.000 0.0000.0000.000 0.0000.0700.157 0.052 0.0610.0170.000 0.0000.0000.3576.1739.2248.1185.266 2.2551.2851.483 3.4937.41221.418 10.6164.6264.0674.569 5.2194.776100.000Total Hours Of Valid Wind Observations11470Total Hours Of Observations12240Recoverability PercentageTotal Hours Calm93.7194Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 6.93 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-56WATTS BARWBNP-112Table 2.3-25 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantMay (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.1090.0990.1430.225 0.1830.0810.1170.1780.2560.327 0.281 0.2560.2540.1650.2110.1493.0350.6180.4260.6330.988 1.3290.6820.931 1.2371.3151.578 1.940 2.4092.4591.578 1.9401.22221.2851.2371.2651.7982.836 1.7910.6961.066 1.7913.0423.980 2.843 1.9401.8691.237 1.6561.30830.3531.6061.7481.8831.407 0.7680.3060.583 0.7252.1684.307 1.812 0.4410.5610.633 0.5400.76020.2471.2931.5711.0940.682 0.2130.0280.142 0.1561.0803.440 0.746 0.3200.4340.497 0.4410.50512.6431.2081.6060.7960.284 0.0280.0140.057 0.1560.8743.397 0.561 0.1490.3620.590 0.6960.73911.5200.0500.0570.0000.007 0.0070.0000.000 0.0140.1780.448 0.050 0.0140.0140.0210.0140.0360.9100.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.007 0.000 0.0000.0000.000 0.0000.0000.0070.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0006.1216.7736.3476.429 4.3201.8082.896 4.2578.91217.4828.234 5.5295.9544.721 5.4994.718100.000Total Hours Of Valid Wind Observations14071Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm94.6427Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.87 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-57WATTS BARWBNP-112Table 2.3-26 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantMay (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1140.2200.3240.2660.1190.0680.080 0.1410.2410.296 0.1890.1120.0930.066 0.0720.0812.4810.5040.9441.3181.163 0.6100.2680.325 0.6350.7480.822 0.610 0.5530.4960.382 0.3660.41510.1601.1232.2133.3192.644 1.0900.7080.822 1.3832.7093.425 2.099 1.0580.8380.569 0.6590.74025.3971.0981.9122.3101.155 0.7000.4880.439 0.7972.0174.417 2.253 0.6830.3990.415 0.4390.57820.1011.2451.7571.4320.838 0.2030.0650.203 0.2121.1313.474 2.001 0.5370.3170.358 0.4470.63514.8542.0992.2531.4640.7000.1140.0490.220 0.2601.1805.255 2.628 0.7160.6670.879 0.9680.98420.4340.3820.3660.0890.049 0.0000.0080.000 0.0810.3742.595 0.773 0.2120.2360.2200.2680.1875.8410.0160.0000.0000.000 0.0000.0000.000 0.0160.0650.456 0.106 0.0330.0000.008 0.0000.0160.7160.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.016 0.000 0.0000.0000.000 0.0000.0000.0166.5819.66510.2566.814 2.8361.6542.089 3.5258.46520.755 10.6583.9033.0462.897 3.2203.635100.000Total Hours Of Valid Wind Observations12293Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm97.2305Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter Level1-DEC-94Mean Wind Speed = 5.53 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-58WATTS BARWBNP-112Table 2.3-27 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJune (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0780.0770.0970.185 0.1580.0680.1130.1740.2940.376 0.319 0.2650.2180.185 0.1930.1112.9100.4030.4030.4540.850 1.1020.6050.951 1.3901.5991.643 2.305 2.3772.2401.844 2.0820.99421.2451.0231.0011.3042.521 1.7650.6271.102 1.7653.7535.187 3.487 2.4491.7221.520 1.4261.01631.6691.8011.6791.3041.527 0.6050.1800.461 0.7202.6375.619 2.183 0.4830.5550.569 0.5260.77821.6271.1741.4770.6270.490 0.1730.0500.043 0.2451.2974.005 1.001 0.2020.3820.612 0.4970.57612.8520.9941.8300.4830.137 0.0140.0290.000 0.0860.7133.1120.317 0.0720.1950.418 0.3600.4399.2000.0500.1660.0000.007 0.0000.0070.007 0.0000.0290.158 0.007 0.0000.0140.0070.0140.0290.4970.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0005.5256.6334.2685.718 3.8171.5662.678 4.38110.32320.1009.619 5.8495.3265.156 5.0993.943100.000Total Hours Of Valid Wind Observations13381Total Hours Of Observations14400Recoverability PercentageTotal Hours Calm96.4404Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.62 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-59WATTS BARWBNP-112Table 2.3-28 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJune (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1070.1740.2310.195 0.1090.0540.068 0.1330.2250.254 0.149 0.0910.0660.065 0.0500.0582.0300.7920.9441.3401.078 0.7840.3710.472 0.7160.9270.767 0.725 0.4630.4630.573 0.4210.44711.2811.1632.2242.8812.477 1.2130.6150.775 1.7023.1853.859 1.997 1.1880.7410.615 0.4970.61525.7481.1372.0561.9381.331 0.6150.3290.514 0.9772.6036.471 2.898 0.8930.3790.396 0.3540.46323.3551.1961.5921.0530.767 0.2610.0760.076 0.3291.2554.870 2.182 0.3710.3540.404 0.4040.51415.7051.9882.3340.9940.447 0.1260.0340.034 0.1940.8765.771 2.755 0.6150.6070.767 0.5810.69918.8220.2190.3880.0170.008 0.0000.0000.008 0.0080.1351.297 0.4800.1100.0510.051 0.0420.1102.9240.0080.0080.0080.000 0.0000.0080.000 0.0000.0080.042 0.008 0.0000.0170.000 0.0080.0000.1180.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.017 0.000 0.0000.0000.000 0.0000.0000.0176.6129.7208.4636.303 3.1091.4861.947 4.0599.21523.34711.1953.7302.6782.871 2.3592.906100.000Total Hours Of Valid Wind Observations11869Total Hours Of Observations12240Recoverability PercentageTotal Hours Calm97.0241Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.98 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-60WATTS BARWBNP-112Table 2.3-29 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJuly (74-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0620.0580.0680.1260.1180.0600.104 0.1690.2460.310 0.268 0.2230.1820.158 0.1610.0952.4090.4140.3870.3730.656 1.0490.5180.870 1.4151.6641.885 2.168 2.5752.1541.899 1.8921.09121.0081.0561.0011.2432.347 1.7600.9181.609 2.6034.2115.516 4.225 2.7482.1951.878 1.9471.17436.4311.3881.6431.7471.574 0.8840.3940.670 1.0842.9965.647 1.843 0.5870.5800.663 0.4560.67722.8310.8081.7191.0840.614 0.1660.0550.076 0.2141.0423.238 0.683 0.1930.3380.373 0.4070.54511.5570.3731.0700.3660.138 0.0550.0000.035 0.1240.5041.685 0.249 0.0690.2000.166 0.2690.3115.6130.0000.0210.0140.000 0.0000.0000.007 0.0000.0140.076 0.000 0.0000.0000.007 0.0070.0070.1520.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0004.1005.8994.8935.456 4.0321.9453.369 5.60910.67818.3579.436 6.3955.6505.143 5.1393.899100.000Total Hours Of Valid Wind Observations14485Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm97.3349Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.32 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-61WATTS BARWBNP-112Table 2.3-30 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJuly (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0880.1220.1610.120 0.0710.0340.050 0.1040.1650.219 0.120 0.0590.0510.042 0.0500.0461.5010.8330.8991.2790.883 0.6020.2560.256 0.6270.8740.866 0.544 0.6100.4700.478 0.4950.45410.4271.4682.3022.9292.252 1.2620.6351.064 2.0953.4484.867 2.607 0.9400.8740.610 0.8080.75928.9231.2371.8732.0621.526 0.8000.4620.817 1.1712.8547.095 3.003 0.9320.6520.346 0.5610.49525.8871.0641.9471.4770.982 0.3630.1320.173 0.2561.2794.917 2.079 0.6100.4370.412 0.3880.48717.0020.9401.9800.9730.429 0.0740.0660.049 0.1980.9984.290 1.881 0.5440.4540.553 0.4540.63514.5190.0410.1320.0160.025 0.0000.0000.025 0.0250.0660.643 0.355 0.0990.0820.025 0.1070.0161.6580.000 0.0080.0000.000 0.0000.0000.000 0.0000.0000.041 0.008 0.0080.0000.008 0.0000.0080.0820.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0005.6739.2638.8976.216 3.1731.5852.434 4.4769.68522.938 10.5973.8043.0212.475 2.8632.901100.000Total Hours Of Valid Wind Observations12122Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm95.8182Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.62 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-62WATTS BARWBNP-112Table 2.3-31 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantAugust (74-93)WindDirectionWind Speed(MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1320.1010.1530.278 0.1850.0800.120 0.2260.3490.409 0.342 0.3100.2580.242 0.3070.1893.6810.6720.3670.4710.915 1.1090.4990.749 1.1991.7541.865 2.156 2.5582.3852.302 2.8081.35923.1701.4281.2411.9553.494 1.8230.7761.165 2.3923.7924.638 3.279 2.3711.7121.539 2.0731.63635.3161.9341.9071.9132.045 0.9910.3540.506 1.0262.9404.368 1.220 0.3950.3330.444 0.4510.63821.4641.1302.0040.8870.499 0.1390.0140.125 0.2771.0752.662 0.263 0.0760.1870.153 0.2570.62410.3720.7701.4140.4920.250 0.0490.0140.0900.1110.6031.456 0.069 0.0070.0140.076 0.0970.3815.8930.0140.0350.0070.000 0.0000.0000.000 0.0000.0070.021 0.000 0.0000.0000.000 0.0070.0140.1040.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0006.0817.0695.8797.481 4.2961.7372.755 5.23210.52015.4197.330 5.7184.8894.755 5.9994.840100.000Total Hours Of Valid Wind Observations14424Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm96.9531Meteorological Facility: Watts Bar Nuclear PlantDate Printed: 1-DEC-94Wind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 3.20 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-63WATTS BARWBNP-112Table 2.3-32 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantAugust (77-93)WindDirection Wind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1340.2410.3460.275 0.1400.0770.086 0.1530.2770.356 0.191 0.0880.0690.066 0.0860.0822.6640.7371.1311.4741.332 0.9720.5280.461 0.7371.0721.014 0.771 0.4860.4610.394 0.5280.51912.6161.4832.8484.2473.209 1.3490.7460.955 1.7843.5024.867 2.379 0.9630.6790.704 0.8880.82931.4321.4242.1612.6222.237 0.8800.5780.570 1.0812.9575.831 2.212 0.6700.3020.352 0.3520.66224.8891.2062.1111.6590.888 0.2850.1010.159 0.4021.1984.071 1.374 0.2180.1590.209 0.2680.46914.7781.6252.1860.9630.5110.1510.0590.151 0.2260.8713.301 0.930 0.1930.2010.226 0.2850.58612.4650.1420.1090.0670.050 0.0080.0080.008 0.0170.0420.3520.1170.0250.0080.0250.0840.0751.1390.0000.0080.0000.000 0.0000.0000.000 0.0000.0000.008 0.000 0.0000.0000.000 0.0000.0000.0170.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0006.75210.79611.3798.501 3.7842.0962.389 4.4009.91919.7997.973 2.6431.8781.976 2.4903.223100.000Total Hours Of Valid Wind Observations11937Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm94.4318Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.24 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-64WATTS BARWBNP-112Table 2.3-33 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantSeptember (74-93) WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.1880.1550.1860.274 0.1660.0590.088 0.1710.3070.348 0.281 0.2710.2900.327 0.4300.2783.8210.8900.5500.6010.999 0.8180.2680.391 0.9121.3971.418 1.737 2.1782.4892.967 3.8132.05523.4801.7801.6572.0482.902 1.5480.5790.861 1.5202.9813.531 2.265 1.6861.6431.693 2.3151.90330.9122.0912.5542.6771.512 0.6950.1590.224 0.6512.1133.944 1.165 0.3260.3260.470 0.5351.03520.4781.6642.3521.3680.347 0.0800.0220.072 0.1741.1432.598 0.355 0.0650.1950.268 0.4340.67311.8091.1583.1690.9840.145 0.0360.0220.014 0.0580.7671.382 0.072 0.0140.0720.166 0.3550.7969.2110.0290.1300.0220.000 0.0000.0000.014 0.0000.0290.058 0.000 0.0000.0000.000 0.0000.0000.2820.000 0.0000.0070.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0070.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0007.80010.5677.8926.178 3.3431.1091.665 3.4858.73713.2785.874 4.5415.0155.892 7.8836.740100.000Total Hours Of Valid Wind Observations13820Total Hours Of Observations14400Recoverability PercentageTotal Hours Calm96.0528Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.51 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-65WATTS BARWBNP-112Table 2.3-34 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantSeptember (77-93)WindDirectionWind Speed(MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1290.2560.3880.299 0.1480.0890.094 0.1690.2770.336 0.169 0.1040.0720.074 0.0800.0852.7700.6040.9681.5451.438 1.1280.6130.586 0.8441.0831.243 0.790 0.4880.4620.417 0.4440.50613.1591.2612.7444.0672.895 1.0120.6750.781 1.6072.9303.623 1.652 1.0210.5770.657 0.7100.71926.9311.5012.7533.3121.598 0.4260.3640.249 0.9152.0604.466 1.900 0.5510.3290.284 0.3640.58621.6571.4032.6902.0600.666 0.1860.0530.080 0.2750.8613.570 1.438 0.2400.2220.204 0.2930.64814.8912.6463.8712.1310.444 0.0440.0360.062 0.2311.0483.818 1.279 0.1950.2400.479 0.6571.02118.2030.1690.6570.2400.027 0.0000.0090.027 0.0000.1240.719 0.044 0.0180.0440.044 0.0360.1152.2730.000 0.0180.0180.000 0.0000.0000.009 0.0000.0090.062 0.000 0.0000.0000.000 0.0000.0000.1150.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0007.71213.95713.7607.367 2.9451.8381.888 4.0418.39317.8387.272 2.6171.9452.161 2.5843.681100.000Total Hours Of Valid Wind Observations11262Total Hours Of Observations12240Recoverability PercentageTotal Hours Calm92.0312Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.74 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-66WATTS BARWBNP-112Table 2.3-35 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantOctober (74-93)Wind DirectionWind Speed (MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.2690.2250.2620.374 0.1950.0690.103 0.1970.3330.369 0.308 0.3830.4720.510 0.6960.3505.1171.0270.8470.7981.326 0.9090.3890.562 0.7571.1251.083 1.354 2.0833.0823.686 4.6381.99325.6601.8051.5271.9652.617 1.1460.3330.528 1.3192.3882.805 1.888 1.9581.8951.687 2.7011.70128.2631.8612.1941.9371.222 0.3960.0830.1180.2921.6733.076 1.062 0.4580.4100.673 0.6601.12517.2381.9371.9231.2220.3400.1110.0000.049 0.1600.8332.312 0.444 0.2080.2990.569 0.5760.86811.8512.0552.2980.7570.1180.0760.0210.028 0.0690.6392.083 0.194 0.1040.3680.660 0.6181.26411.3510.0490.1460.0000.000 0.0000.0000.000 0.0210.0620.153 0.007 0.0070.0000.0210.0350.0210.5210.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0009.0029.1606.9415.998 2.8330.8951.388 2.8147.05411.8805.258 5.2026.5267.806 9.9237.321100.000Total Hours Of Valid Wind Observations14404Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm96.8737Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.56 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-67WATTS BARWBNP-112Table 2.3-36 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantOctober (77-93)WindDirectionWind Speed (MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW Subtotal0.1630.3170.4870.456 0.2350.1180.1190.2070.3280.410 0.241 0.1380.1320.082 0.0980.0893.6220.5620.8551.5951.579 1.5140.8630.724 0.9441.1641.017 0.830 0.5700.6100.366 0.4800.39914.0721.2212.6133.7283.410 1.0580.4310.578 1.3182.4173.467 1.807 0.9440.8300.529 0.5860.57825.5151.0252.4502.5881.001 0.3500.1630.195 0.4801.5873.996 1.620 0.6190.2440.350 0.3830.52117.5711.6602.1971.6280.619 0.1630.0160.049 0.1550.7983.280 1.367 0.4150.2770.439 0.5780.67614.3163.7682.9621.7170.236 0.0900.0000.057 0.2440.8223.841 1.563 0.4640.5701.213 1.0991.70120.3470.6020.2850.0650.024 0.0160.0000.008 0.0570.2521.465 0.358 0.1380.1790.317 0.1790.4394.3870.0000.0000.0000.000 0.0000.0000.000 0.0000.0330.098 0.024 0.0000.0000.008 0.0000.0080.1710.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0009.00211.67911.8087.325 3.4261.5911.731 3.4067.40017.5757.810 3.2882.8423.305 3.4024.411100.000Total Hours Of Valid Wind Observations12287Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm97.1445Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 5.03 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-68WATTS BARWBNP-112Table 2.3-37 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantNovember (74-93)Wind DirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.1900.2410.2540.329 0.1900.0580.0710.1140.2280.289 0.242 0.3050.3680.359 0.4250.2783.9401.0411.0910.9691.292 1.0190.3660.402 0.4520.7460.804 1.077 1.6442.4762.792 3.1721.93121.2731.3781.9742.2682.892 1.4000.3660.495 0.9982.1532.871 2.002 2.2392.2031.773 2.2391.60128.8521.6362.2611.6940.976 0.3590.0650.136 0.4161.1993.560 1.170 0.7540.7390.545 1.0191.23417.7641.4932.1531.0620.179 0.0140.0000.050 0.1080.6602.727 0.782 0.4520.7250.560 0.8831.19113.0411.7372.0890.4880.043 0.0070.0070.065 0.1940.7613.223 0.323 0.4160.8970.775 1.0411.47113.5360.1510.0720.0070.000 0.0000.0000.029 0.0430.2300.646 0.043 0.0650.0360.072 0.0860.0791.5570.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.036 0.000 0.0000.0000.000 0.0000.0000.0360.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0007.6269.8806.7435.712 2.9890.8611.248 2.3255.97714.1555.639 5.8757.4456.876 8.8667.785100.000Total Hours Of Valid Wind Observations13933Total Hours Of Observations14400Recoverability PercentageTotal Hours Calm96.8549Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 3.99 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-69WATTS BARWBNP-112Table 2.3-38 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantNovember (77-93) WindDirectionWind Speed (MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4 >=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW Subtotal0.1160.2010.3260.273 0.1330.0540.062 0.1040.1870.227 0.142 0.1020.0720.052 0.0730.0852.2080.5730.9521.1801.180 0.9440.5480.514 0.5310.7250.716 0.641 0.4050.4890.346 0.4550.45510.6531.3062.3094.1213.253 1.2220.3370.489 1.1552.3182.967 1.660 1.2560.6740.506 0.7330.92725.2341.0962.0562.7561.129 0.2700.0670.143 0.3201.3063.767 1.896 0.7670.3790.430 0.5060.71617.6061.2902.3091.7870.497 0.0840.0080.067 0.1600.7502.958 1.433 0.6150.4300.379 0.5730.78414.1263.2532.8571.7950.160 0.0000.0000.093 0.2530.8094.560 2.158 0.8181.0371.155 1.5252.01422.4860.7250.3960.1260.000 0.0000.0000.025 0.1600.5392.200 0.725 0.4640.3460.396 0.3030.4806.8860.034 0.0080.0000.000 0.0000.0000.000 0.0420.1260.371 0.0510.1100.0170.000 0.0000.0080.7670.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.017 0.008 0.0080.0000.000 0.0000.0000.0348.39211.09012.0926.493 2.6531.0151.393 2.7256.76117.7828.713 4.5443.4433.264 4.1695.471100.000Total Hours Of Valid Wind Observations11865Total Hours Of Observations12240Recoverability PercentageTotal Hours Calm96.9262Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 5.73 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-70WATTS BARWBNP-112Table 2.3-39 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantDecember (74-93)WindDirection Wind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5 TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSubtotal0.0980.1100.1440.187 0.0900.0250.043 0.0920.1330.167 0.149 0.1740.1910.169 0.2340.1442.1490.7590.7520.9291.106 0.8510.2700.355 0.7450.6740.816 1.014 1.4751.9152.085 2.4261.49617.6671.3901.6672.2343.014 1.1350.2700.589 1.2772.2412.851 2.262 2.3622.2771.638 2.7091.67429.5891.5112.0501.7660.908 0.1770.0210.106 0.2271.3124.1631.5110.8580.9790.610 0.9650.95718.1211.7092.0640.9500.199 0.0280.0000.021 0.0500.5463.206 0.908 0.5390.8650.858 0.9431.24814.1352.3902.4110.7090.035 0.0000.0000.014 0.0570.5043.6670.5110.3551.1281.213 1.6031.78716.3830.0710.1700.0070.000 0.0070.0000.007 0.0280.2770.5390.078 0.0640.0990.121 0.1560.1701.7940.0000.0000.0000.000 0.0000.0000.000 0.0000.0350.121 0.000 0.0000.0000.007 0.0000.0000.1630.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.0007.9289.2236.7405.450 2.2890.5851.135 2.4755.72115.5286.433 5.8277.4536.701 9.0357.477100.000Total Hours Of Valid Wind Observations14100Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm94.8303Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 9.72 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 4.39 Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-71WATTS BARWBNP-112Table 2.3-40 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantDecember (77-93)WindDirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSubtotal0.0740.1120.1580.127 0.0680.0390.037 0.0680.1350.178 0.103 0.0680.0500.049 0.0430.0441.3520.5140.5060.7630.647 0.7130.4560.315 0.5060.6390.713 0.498 0.4560.3650.481 0.3650.3078.2441.1281.9822.7622.190 0.7960.4230.514 1.0042.3643.260 1.800 1.0530.7380.605 0.5890.67221.8791.1692.2812.6210.887 0.1990.0660.1160.2741.1784.023 2.015 0.8460.5470.406 0.5970.70517.9311.1862.2061.8410.431 0.0330.0080.025 0.0830.6053.243 1.825 0.7050.4810.506 0.7630.76314.7053.9733.6581.6500.166 0.0000.0000.0250.1160.5474.462 3.351 1.0371.2861.858 2.0072.33126.4660.8360.5470.1740.000 0.0080.0000.017 0.0330.2992.604 0.896 0.3400.3400.7220.6470.7638.2280.0580.0330.0000.000 0.0000.0000.008 0.0080.1000.489 0.124 0.0750.0410.066 0.0500.0501.1030.0000.0000.0000.000 0.0000.0000.000 0.0000.8000.041 0.017 0.0170.0000.000 0.0080.0000.0918.94011.3259.9704.448 1.8180.9931.057 2.0915.87419.014 10.6284.5963.8484.693 5.0695.634100.000Total Hours Of Valid Wind Observations12057Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm95.3163Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 1-DEC-94Mean Wind Speed = 6.36 Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-72METEOROLOGYWATTS BARWBNP-112THIS PAGE IS INTENTIONALLY LEFT BLANK METEOROLOGY2.3-73WATTS BARWBNP-112All columns and calm total 100 percent of net valid observations, which represent 91 percent of total record. *Watts Bar temporary meteorological facility. Wind instruments 10 meters aboveground.**Wind speed class 1-3 mph includes values 0.6-3.5 mph; class 4-7 mph includes values 3.6-7.5 mph; etc.Table 2.3-41 Percent Occurrence Of Wind Speed* For All Wind DirectionsJuly 1, 1971 - June 28, 1972 AnnualWindWind Speed (MPH)**Direction1-34-78-1213-18> 19TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWTotal4.334.16 5.263.91.641.111.722.27 2.942.542.54 2.072.182.38 4.975.7149.721.072.114.122.070.50.450.50.81 2.834.693.08 1.081.261.21 1.742.1329.650.140.29 0.490.230.04 0.250.330.16 0.681.80.620.21.020.90.730.298.170.030.01 -0.01 -

- - -0.150.330.04 0.030.090.01 0.060.050.81--

---

---

---

---

---5.576.57 9.876.212.18 1.812.553.246.69.366.28 3.384.554.5 7.58.1888.35Calm = 11.64 2.3-74METEOROLOGYWATTS BARWBNP-112*Inversion Conditions Distributed Within Total Hours With Valid Vertical Temperature Difference Data. Stability Classes Distributed Within Total Hours With Valid Wind Direction, Wind Speed, And Vertical Temperature Difference Data.Meteorological Facility Located 0.8 Km Ssw Of Watts Bar Nuclear Plant. Temperature Difference Between 9.51 And 45.63 Meters And Wind Direction And Wind Speed At 9.72 Meter Level.Table 2.3-42 Percent Occurrences Of Inversion Conditions And Pasquill Stability Classes A-G* Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 STABILITY CLASS INVERSIONSABCDEFGJANUARYFEBRUARY MARCHAPRILMAY JUNEJULYAUGUST SEPTEMBEROCTOBERNOVEMBER DECEMBER ANNUAL31.034.3 36.339.940.3 40.739.640.7 40.744.341.2 36.1 38.82.23.7 5.45.24.4 5.65.85.0 5.04.31.8 1.6 4.22.23.6 4.14.24.1 4.74.54.4 4.23.92.2 1.8 3.74.55.4 6.17.37.1 7.97.97.2 6.66.34.5 4.6 6.347.042.5 37.533.033.3 30.931.530.8 31.832.138.5 44.0 36.126.523.3 23.722.626.2 27.329.432.5 30.924.126.8 27.1 26.711.511.9 11.913.216.8 17.616.517.0 17.420.915.4 13.6 15.3 6.1 9.511.314.5 8.1 5.9 4.6 3.0 4.0 8.510.8 7.3 7.8 METEOROLOGY2.3-75WATTS BARWBNP-112Table 2.3-43 Deleted By Amendment 63 2.3-76METEOROLOGYWATTS BARWBNP-112Table 2.3-44 Inversion Persistence DataWatts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 (Delta-T Given In Degrees Celsius) (Page 1 of 2)DISREGARDING INVERSION NO. HOURSE0.0<DELTA-T<=1.5F1.5<DELTA-T<=4.0GDELT A-T>4.0F AND GDELT A-T>1.5STRENGTHDELTA-T>0.0234 567 8910111213 141516 171819 202122 232425 2627282027993709 483340224 1519472 644219 1074 100 000 000 0001091728597 530513399 291220164 1326031 1731 001 000 000 000527337302 286189159 10311889 875340 3462 000 000 000 000377309312 286305299 307350399 477414357 2131685081 2

110 000 000842549393 349314271 277270298 419773731 59546827298258 010 000 000293031 32>=32000 00000 00000 00000 00000 02*

2.3-77METEOROLOGYWATTS BARWBNP-112Meteorological Facility Located 0.8 Km SSW Of Watts Bar Nuclear Plant Temperature Instruments Located 45.63 And 9.51 Meters Above Ground *January 1982 and December 1989 TOTAL54204778233246366955 Maximum Hours of Persistence 17 19 162145Table 2.3-44 Inversion Persistence DataWatts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 (Delta-T Given In Degrees Celsius) (Continued) (Page 2 of 2)DISREGARDING INVERSION NO. HOURSE0.0<DELTA-T<=1.5F1.5<DELTA-T<=4.0GDELT A-T>4.0F AND GDELT A-T>1.5STRENGTHDELTA-T>0.0 2.3-78METEOROLOGYWATTS BARWBNP-112Table 2.3-45 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class A (Delta T<=-1.9 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93 WindWind Speed (MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0010.0010.001 0.0000.0010.002 0.0000.0010.001 0.0020.0010.000 0.0000.0000.000 0.0000.0010.0080.0080.012 0.0350.0370.037 0.0160.0210.042 0.0580.0460.018 0.0060.0040.001 0.0030.0070.3500.0210.054 0.0880.0790.041 0.0160.0270.055 0.1390.2570.093 0.0160.0100.004 0.0050.0210.9250.0360.074 0.0780.0710.015 0.0020.0050.020 0.1270.4760.1180.0170.0140.007 0.0100.0351.1020.0600.141 0.0890.0320.005 0.0010.0010.013 0.1290.7430.102 0.0630.0640.033 0.0290.0571.5630.0030.004 0.0000.0000.000 0.0000.0010.002 0.0180.1130.012 0.0210.0140.005 0.0060.0110.2100.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0050.000 0.0020.0010.000 0.0000.0000.0080.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.1290.285 0.2890.2200.100 0.0350.0550.133 0.4731.6390.343 0.1250.1060.050 0.0520.1314.166Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class A6970Total Hours Of Valid Wind Direction-Wind Speed-Stability Class A6849 Total Hours Of Valid Wind Direction-Wind Speed-Stability Observations 164406Total Hours CalmMeteorological Facility: Watts Bar Nuclear Plant1Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter LevelMean Wind Speed = 7.21Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-79WATTS BARWBNP-112Table 2.3-46 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class B (-1.9< Delta T<=-1.7 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSubtotal0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.001 0.0000.0010.001 0.0020.0000.001 0.0010.0000.000 0.0000.0000.000 0.0000.0000.0060.0210.040 0.0690.0520.061 0.0210.0300.046 0.0520.0680.027 0.0070.0050.005 0.0070.0080.5190.0550.108 0.1230.1010.055 0.0240.0280.046 0.1280.2110.1140.0240.0100.005 0.0130.0271.0720.0520.1120.1070.0710.015 0.0020.0030.013 0.0770.2890.080 0.0260.0230.019 0.0230.0330.9440.0800.186 0.0860.0240.002 0.0010.0020.005 0.0540.2380.029 0.0230.0490.060 0.0630.0810.9820.0070.012 0.0020.0000.000 0.0000.0010.000 0.0120.0460.003 0.0070.0120.0070.0050.0100.1230.0000.000 0.0000.0000.000 0.0000.0000.000 0.0020.0030.000 0.0000.0010.000 0.0010.0010.0070.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.2130.458 0.3870.2490.133 0.0490.0640.1110.3260.8550.252 0.0850.0990.0970.1120.1613.654Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class B6109Total Hours Of Valid Wind Direction-Wind Speed-Stability Class B6007Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1664060Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 And 45.63 Meters Wind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 6.38Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-80METEOROLOGYWATTS BARWBNP-112Table 2.3-47 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class C (-1.7< Delta T<=-1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW Subtotal0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0010.001 0.0020.0010.004 0.0020.0010.001 0.0010.0010.001 0.0010.0010.000 0.0000.0000.0150.0410.099 0.1300.1170.101 0.0410.0550.0850.1160.0990.049 0.0210.0180.0110.0200.0241.0270.0990.205 0.2340.1720.126 0.0400.0560.109 0.2450.4180.193 0.0570.0270.022 0.0400.0562.0970.1170.221 0.1630.0820.022 0.0040.0080.0290.1140.3750.103 0.0370.0500.038 0.0510.0811.4940.1540.292 0.1280.0270.005 0.0000.0010.012 0.0680.2680.036 0.0230.0600.1130.1440.1291.4600.0080.019 0.0010.0010.001 0.0000.0020.004 0.0170.0620.0070.0090.0110.018 0.0150.0110.1840.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0040.000 0.0000.0020.000 0.0010.0000.0090.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.4190.837 0.6580.4000.258 0.0880.1230.238 0.5611.2270.388 0.1480.1690.201 0.2700.3016.286Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class C10556Total Hours Of Valid Wind Direction-Wind Speed-Stability Class C10335Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1644060Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 6.06Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-81WATTS BARWBNP-112Table 2.3-48 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class D (-1.5< Delta T<=-0.5 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0050.006 0.0080.0100.007 0.0030.0050.0070.0110.0140.009 0.0060.0050.004 0.0040.0040.1080.0460.043 0.0670.1080.135 0.0700.0780.130 0.1330.1060.129 0.0830.0950.098 0.0800.0481.4500.5020.584 0.7270.8590.568 0.2450.3780.591 0.9911.2590.784 0.4980.4080.325 0.3410.3699.4280.8751.226 1.0430.5850.260 0.0820.1510.256 0.8161.8370.742 0.3350.3360.359 0.3980.5269.8280.9671.348 0.6150.1590.064 0.0130.0290.052 0.3391.0710.249 0.1700.3470.436 0.5300.6267.0141.1901.457 0.3550.0520.016 0.0070.0230.046 0.2941.1190.151 0.1210.4090.571 0.7480.9037.4630.0460.063 0.0090.0010.000 0.0000.0070.018 0.1000.2460.018 0.0290.0440.055 0.0690.0470.7510.0000.000 0.0010.0000.000 0.0000.0000.0020.0110.0210.001 0.0010.0020.003 0.0010.0000.0420.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.001 0.0000.0000.000 0.0000.0000.0023.6314.728 2.8241.7731.050 0.4200.6701.102 2.6975.6712.084 1.2421.6471.851 2.1712.52336.085Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class D60302Total Hours Of Valid Wind Direction-Wind Speed-Stability Class D59326Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm164406177Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 5.37Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-82METEOROLOGYWATTS BARWBNP-112Table 2.3-49 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class E (-0.5< Delta T<= 1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0300.025 0.0300.0570.034 0.0130.0190.039 0.0670.0900.071 0.0630.0590.055 0.0590.0390.7480.1640.138 0.1560.2800.304 0.1480.2080.341 0.4500.5050.566 0.6510.6710.626 0.6520.3496.2080.4990.415 0.5130.9880.461 0.1470.2090.519 1.0371.4991.008 0.7640.6450.595 0.6640.51210.4780.5990.422 0.2660.2900.083 0.0280.0490.1140.4781.1170.300 0.1780.2220.214 0.2560.3084.9250.2740.213 0.0880.0400.016 0.0070.0300.059 0.2060.7430.176 0.1060.1110.0910.1110.1462.4150.0830.070 0.0300.0090.010 0.0020.0210.066 0.1860.7510.131 0.0710.0670.037 0.0490.0751.6580.0020.003 0.0000.0010.001 0.0010.0040.014 0.0610.1480.021 0.0100.0080.0020.0020.0020.2800.0000.000 0.0000.0000.000 0.0000.0000.001 0.0070.0160.002 0.0010.0000.001 0.0000.0000.0280.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0001.6501.286 1.0851.6630.910 0.3470.5391.152 2.4924.8692.274 1.8441.7831.622 1.7931.43026.739Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class E44969Total Hours Of Valid Wind Direction-Wind Speed-Stability Class E43961Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1644061229Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 3.28Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-83WATTS BARWBNP-112Table 2.3-50 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class F ( 1.5< Delta T<= 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0510.043 0.0540.0870.046 0.0160.0230.042 0.0610.0780.096 0.1260.1310.126 0.1840.0991.2620.2880.229 0.2460.3450.286 0.1200.1590.254 0.3380.3870.517 0.7380.8840.937 1.2250.6447.5980.2450.219 0.3180.5670.200 0.0480.0820.189 0.3040.4350.498 0.5880.4990.393 0.7070.3985.6880.0270.027 0.0250.0580.010 0.0010.0050.018 0.0400.1750.064 0.0380.0280.024 0.0410.0300.6090.0060.001 0.0020.0020.001 0.0000.0010.002 0.0050.0630.018 0.0070.0010.002 0.0040.0040.1190.0010.001 0.0010.0020.001 0.0000.0000.002 0.0040.0130.005 0.0010.0010.001 0.0020.0000.0350.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.001 0.0000.0000.000 0.0010.0000.0020.000 0.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.6170.519 0.6451.0620.544 0.1850.2700.508 0.7511.1511.199 1.4971.5441.483 2.1631.17515.311Total Hours Of Valid Stability Observations166789Total Hours Of Stability Class F25805Total Hours Of Valid Wind Direction-Wind Speed-Stability Class F25173Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1644062075Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 and 45.63 Meters Wind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 1.53Date Printed: 20-SEP-94NOTE: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-84METEOROLOGYWATTS BARWBNP-112Table 2.3-51 Joint Percentage Frequencies Of Wind Speed By Wind Direction ForStability Class G (Delta T > 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0340.038 0.0540.0910.047 0.0150.0270.031 0.0350.0420.053 0.0890.0940.075 0.1010.0560.8810.1950.196 0.2570.3760.257 0.0950.1590.176 0.1920.2170.278 0.4360.4640.406 0.5170.3064.5250.0660.095 0.1610.3270.105 0.0240.0490.065 0.0750.1070.130 0.2510.2600.172 0.2640.1282.2800.0010.002 0.0010.0080.002 0.0000.0000.002 0.0050.0120.005 0.0070.0050.004 0.0100.0030.0680.0000.000 0.0000.0000.000 0.0000.0000.000 0.0020.0020.000 0.0000.0000.000 0.0010.0000.0040.0000.000 0.0000.0010.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.2960.331 0.4730.8030.410 0.1350.2350.274 0.3080.3790.466 0.7820.8230.656 0.8930.4947.758Total Hours Of Valid Stability Observations167789Total Hours Of Stability Class G13078Total Hours Of Valid Wind Direction-Wind Speed-Stability Class G12755Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1644061448Meteorological facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured at 9.72 Meter Level Mean Wind Speed = 1.23Date Printed: 20-SEP-94NOTE: Totals And Subtotals AreObtained From Unrounded Numbers METEOROLOGY2.3-85WATTS BARWBNP-112Table 2.3-52 Joint Percentage Frequencies Of Wind Speed By Stability Class, Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93WIND SPEEDSTABILITY CLASS (MPH) A B C D E F GCALM 0.6-1.41.5-3.43.5-5.4 5.5-7.47.5-12.412.5-18.4 18.5-24.4>=24.5TOTAL 0.0010.0080.3500.925 1.1021.5630.210 0.0080.0004.1660.0000.0060.5191.072 0.9440.9820.123 0.0070.0003.6540.0000.0151.0272.097 1.4941.4600.184 0.0090.0006.2860.1081.4509.4289.828 7.0147.4630.751 0.0420.00136.0850.7486.20810.4784.925 2.4151.6580.280 0.0280.00026.7391.2627.5985.6880.6090.1190.0350.001 0.0000.00015.3110.8814.5252.2800.068 0.0040.0010.000 0.0000.0007.758Total Hours Of Valid Stability Observations167789Total Hours Of Valid Wind Direction-Wind Speed-Stability Observations164406Total Hours Of Observations175320Joint Recoverability Percentage93.8Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Date Printed: 20-SEP-94 2.3-86METEOROLOGYWATTS BARWBNP-112Table 2.3-53 Joint Percentage Frequencies Of Wind Speed By Wind Direction ForStability Class A (Delta T<=-1.9 C/100 M), Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93WindWind Speed (Mph)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.001 0.0020.0010.001 0.0010.0010.001 0.0000.0010.000 0.0010.0000.000 0.0010.0010.0110.0060.0110.0320.0350.022 0.0140.0160.027 0.0370.0320.014 0.0040.0010.001 0.0010.0040.2580.0190.036 0.0660.0730.036 0.0210.0250.049 0.0870.1610.080 0.0090.0030.003 0.0020.0090.6800.0290.071 0.0910.0760.016 0.0030.0030.016 0.0580.2610.150 0.0160.0050.001 0.0020.0140.8130.0720.136 0.1280.0720.007 0.0030.0010.016 0.0910.6990.334 0.0460.0320.023 0.0190.0431.7210.0160.019 0.0090.0030.000 0.0000.0010.004 0.0280.3470.141 0.0560.0390.036 0.0140.0160.7280.0010.000 0.0000.0000.000 0.0000.0000.001 0.0050.0560.019 0.0240.0020.001 0.0020.0010.1140.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0060.000 0.0080.0030.000 0.0000.0000.0170.1440.275 0.3270.2610.082 0.0420.0470.1140.3071.5640.736 0.1650.0850.066 0.0410.0884.343Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class A 6198Total Hours Of Valid Wind Direction-Wind Speed-Stability Class A6089Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1402052Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 and 45.63 MetersWind Speed And Direction Measured At 46.36 Meter Level Mean Wind Speed = 9.02Date Printed: 29-NOV-94NOTE: Total And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-87WATTS BARWBNP-112Table 2.3-54 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class B (-1.9< Delta T<=-1.7 C/100 M), Watts Bar Nuclear Plant Jan 1, 77 - Dec 31, 93WindWind Speed(MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0010.0010.0000.002 0.0010.0010.000 0.0010.0000.001 0.0000.0000.000 0.0000.0000.000 0.0070.0240.0390.0550.075 0.0360.0160.020 0.0310.0340.050 0.0210.0050.004 0.0040.0020.005 0.4220.0370.0830.1250.093 0.0440.0280.029 0.0490.0780.160 0.1030.0140.005 0.0040.0090.016 0.8760.0510.0910.1060.088 0.0200.0030.006 0.0090.0490.178 0.1480.0160.005 0.0060.0060.024 0.8060.1030.1980.1380.064 0.0060.0010.003 0.0080.0440.293 0.1610.0450.040 0.0630.0560.068 1.2920.0190.0410.0120.001 0.0010.0000.001 0.0010.0100.1110.0440.0150.031 0.0390.0240.0390.3870.0010.0000.0000.000 0.0000.0000.001 0.0000.0040.029 0.0070.0080.009 0.0010.0010.004 0.0630.0000.0000.0000.000 0.0000.0000.000 0.0000.0010.004 0.0020.0010.001 0.0010.0010.0010.0110.2370.4530.4370.324 0.1080.0490.059 0.0980.2200.826 0.4860.1050.0930.1170.0980.155 3.866Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class B5522Total Hours Of Valid Wind Direction-Wind Speed-Stability Class B5420Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1402051Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 7.71Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-88METEOROLOGYWATTS BARWBNP-112Table 2.3-55 Joint Percentage Frequencies Of Wind Speed By Wind Direction ForStability Class C (-1.7< Delta T<=-1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93WindWind Speed (MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0010.0010.0020.004 0.0040.0010.001 0.0010.0010.001 0.0030.0010.001 0.0000.0000.001 0.0010.0220.0300.0680.122 0.1330.0480.031 0.0440.0490.070 0.0760.0390.0150.0110.0060.0110.0200.7720.0870.1380.215 0.1680.0870.051 0.0440.0780.127 0.2700.1650.036 0.0160.0110.020 0.0311.5440.0910.1780.172 0.1230.0180.007 0.0060.0270.068 0.2700.1930.033 0.0190.0260.024 0.0411.2960.1780.3140.201 0.0490.0090.002 0.0010.0140.057 0.3310.1920.048 0.0590.1060.132 0.1211.8140.0390.0700.016 0.0060.0000.000 0.0030.0060.0200.1150.0370.0200.0230.0670.051 0.0450.5160.0010.0000.000 0.0000.0000.000 0.0010.0010.009 0.0280.0110.009 0.0050.0110.001 0.0020.0780.0000.0000.000 0.0000.0000.000 0.0000.0000.001 0.0040.0010.001 0.0010.0000.000 0.0000.0090.4270.7700.730 0.4820.1630.092 0.1010.1760.352 1.0960.6380.163 0.1350.2260.239 0.2626.051Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class C8714Total Hours Of Valid Wind Direction-wind Speed-stability Class C8484 Total Hours Of Valid Wind Direction-wind Speed-stability ObservationsTotal Hours Calm1402051Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-t Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 7.24Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-89WATTS BARWBNP-112Table 2.3-56 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class D (-1.5< Delta T<=-0.5 C/100 M), Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93Wind Wind Speed(MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0060.0080.0120.012 0.0080.0040.004 0.0070.0100.014 0.0090.0060.005 0.0040.0040.0040.1160.0470.0680.1010.1160.1020.0580.059 0.0860.0850.083 0.0630.0610.068 0.0520.0540.039 1.1440.3240.4350.7180.660 0.4020.2130.240 0.3930.5880.824 0.5580.3610.233 0.1850.2300.226 6.5890.5160.8521.0400.569 0.2150.1070.150 0.2470.5531.378 0.8800.3310.194 0.1880.2150.306 7.7420.6331.1340.9010.310 0.1040.0210.038 0.0680.2711.026 0.6220.2100.188 0.2570.3560.383 6.5221.8311.9330.9620.164 0.0430.0130.037 0.0660.2851.387 0.7450.3020.484 0.8670.9641.08011.1620.3840.2940.0880.012 0.0040.0020.008 0.0390.1330.718 0.2380.1180.1980.2770.2790.335 3.1280.0090.0070.0010.000 0.0000.0000.004 0.0090.0440.145 0.0380.0200.030 0.0170.0200.012 0.3560.0000.0000.0000.000 0.0000.0000.000 0.0000.0060.016 0.0090.0060.002 0.0000.0010.000 0.0393.7494.7313.8221.843 0.8780.4190.539 0.9141.9765.590 3.1621.4161.402 1.8472.1232.38536.798Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class D52796Total Hours Of Valid Wind Direction-Wind Speed-Stability Class D51592 Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm140205162Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 6.93Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-90METEOROLOGYWATTS BARWBNP-112Table 2.3-57 Joint Percentage Frequencies Of Wind Speed By Wind Direction ForStability Class E (-0.5< Delta T<= 1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93WindWind Speed(Mph)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNWSUBTOTAL0.0300.0510.0700.054 0.0310.0170.017 0.0320.0580.080 0.0440.0250.020 0.0160.0180.018 0.5810.1680.2420.3360.336 0.2700.1570.133 0.2050.2750.303 0.2050.1680.124 0.1210.1210.1183.2810.3630.6550.8930.622 0.2810.1370.166 0.3590.7491.108 0.5750.2770.220 0.1700.2030.196 6.9760.2750.5610.5400.216 0.0820.0560.062 0.1550.5091.282 0.5380.2250.127 0.1350.1380.149 5.0490.4150.4360.2730.070 0.0340.0190.037 0.0730.3111.081 0.4390.1590.133 0.1230.2050.183 3.9920.5950.3370.1230.039 0.0210.0060.046 0.1200.3401.430 0.7290.2550.2110.1600.2050.223 4.8400.0190.0070.0040.003 0.0030.0000.012 0.0490.1260.575 0.2230.0830.0370.0160.0190.023 1.1980.0000.0000.0000.000 0.0000.0010.003 0.0080.0320.099 0.0260.0100.004 0.0010.0010.000 0.1840.0000.0000.0000.000 0.0000.0000.000 0.0000.0060.003 0.0030.0010.000 0.0000.0000.000 0.0121.8652.2882.2391.339 0.7220.3930.476 1.0022.4065.961 2.7821.2020.875 0.7410.9100.91026.112Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class E37823Total Hours Of Valid Wind Direction-Wind Speed-Stability Class E36611 Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm140205814Meteorological Facility: Watts Bar Nuclear Plant Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 5.17Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-91WATTS BARWBNP-112Table 2.3-58 Joint Percentage Frequencies Of Wind Speed By Wind Direction ForStability Class F (1.5< Delta T<= 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93WindWind Speed (MPH)DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0570.1100.1470.105 0.0490.0230.026 0.0500.0940.1110.0660.0370.033 0.0260.0280.033 0.9970.2230.3140.4690.377 0.2910.1510.150 0.2060.2970.270 0.2400.1530.168 0.1500.1320.155 3.7490.3330.7570.9640.645 0.1900.0720.106 0.2780.6170.814 0.4050.2050.155 0.1060.1360.165 5.9500.1420.3880.2930.071 0.0100.0080.018 0.0610.2540.689 0.2080.0790.049 0.0460.0600.066 2.4420.0860.1470.0590.006 0.0030.0020.009 0.0160.0860.450 0.1300.0560.032 0.0250.0380.053 1.1980.0320.0310.0100.001 0.0020.0000.004 0.0160.0460.334 0.1730.0560.019 0.0150.0180.020 0.7770.0010.0000.0000.000 0.0000.0000.000 0.0000.0010.029 0.0270.0040.001 0.0000.0010.0010.0660.0000.0000.0000.000 0.0000.0000.000 0.0000.0010.000 0.0010.0010.000 0.0000.0000.000 0.0030.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.8751.7471.9431.207 0.5460.2560.314 0.6261.3972.698 1.2510.5910.458 0.3690.4120.49315.182Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class F22122Total Hours Of Valid Wind Direction-Wind Speed-Stability Class F21286 Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1402051398Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 Meters Wind Speed And Direction Measured At 46.36 Meter LevelMean Wind Speed = 2.91Note: Totals and Subtotals are Obtained from Unrounded NumbersDate Printed: 29-NOV-94 2.3-92METEOROLOGYWATTS BARWBNP-112Table 2.3-59 Joint Percentage Frequencies Of Wind Speed By Wind Direction For Stability Class G (Delta T > 4.0 C/100 M) Watts, Bar Nuclear Plant Jan 1, 77 - Dec 31, 93WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0230.0410.0630.043 0.0140.0060.007 0.0180.0330.032 0.0180.0120.0110.0100.0110.012 0.3530.1230.1850.2380.179 0.1090.0510.046 0.0810.1130.092 0.0810.0650.068 0.0700.0820.073 1.6550.2050.4150.6740.439 0.0870.0380.049 0.1750.3670.376 0.1750.1130.091 0.0690.0800.096 3.4490.0870.1950.2080.053 0.0040.0060.005 0.0350.1780.424 0.1080.0440.027 0.0270.0410.041 1.4840.0170.0660.0340.001 0.0000.0000.003 0.0090.0430.218 0.0460.0230.016 0.0100.0150.018 0.5170.0090.0090.0040.001 0.0010.0000.001 0.0030.0110.091 0.0340.0090.008 0.0040.0040.001 0.1880.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.002 0.0010.0000.000 0.0000.0000.0000.0030.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.4650.9121.2200.715 0.2150.1010.1110.3190.7451.235 0.4630.2650.220 0.1890.2330.240 7.648Total Hours Of Valid Stability Observations144312Total Hours Of Stability Class G11137Total Hours Of Valid Wind Direction-Wind Speed-Stability Class G10723 Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm140205495Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 Meters Wind Speed And Direction Measured At 46.36 Meter Level Mean Wind Speed = 2.78Date Printed: 29-NOV-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-93WATTS BARWBNP-112Table 2.3-60 Joint Percentage Frequencies Of Wind Speed By Stability Class, Watts Bar Nuclear PlantJan 1, 77 - Dec 31, 93Wind Speed Stability Class (MPH) A B C D E FGCALM 0.6-1.41.5-3.4 3.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TOTAL 0.0010.0110.258 0.6800.8131.721 0.7280.1140.017 4.3430.0010.0070.422 0.8760.8061.292 0.3870.0630.0113.8660.0010.0220.772 1.5441.2961.814 0.5160.0780.009 6.0510.1161.1446.589 7.7426.52211.1623.1280.3560.03936.7980.5813.2816.976 5.0493.9924.840 1.1980.1840.01226.1120.9973.7495.950 2.4421.1980.777 0.0660.0030.00015.1820.3531.6553.449 1.4840.5170.188 0.0030.0000.000 7.648Total Hours Of Valid Stability Observations144312Total Hours Of Valid Wind Direction-Wind Speed-Stability Observations140205 Total Hours Of Observations149016Joint Recoverability Percentage94.1Meteorological Facility: Watts Bar Nuclear Plant Stability Based On t Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 46.36 Meter LevelDate Printed: 29-NOV-94 2.3-94METEOROLOGYWATTS BARWBNP-112*Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments 9.51 and 45.63 meters above ground. Wind speed and direction measured at 9.72-meter level. Joint percent valid data in data base = 93.4.**Less than 5% of the hours had nonzero X/Q values. Table 2.3-61 Calculated 1-hour Average Atmospheric Dispersion Factors (X/Q) At Minimum Distance (1100 Meters) Between Release Zone (100 M Radius) And Exclusion Area Boundary (1200 M Radius) For Watts Bar Nuclear Plant(Sheet 1 of 1)Based on RG 1.145 and Meteorological Data for 1974 Through 1988*Plume Sector Direction 0.5th PercentileX/Q Value (sec/m3) 5th PercentileX/Q Value (sec/m3)N 3.312E-43.396E-5NNE3.341E-44.596E-5NE 3.954E-43.314E-5ENE5.060E-42.883E-5E 5.293E-43.177E-5ESE5.321E-42.721E-5SE 6.040E-45.996E-5SSE4.705E-42.622E-5S 3.068E-42.662E-5SSW2.901E-42.806E-5SW 3.441E-41.791E-5WSW4.394E-43.217E-5W 3.704E-4-** WNW1.322E-4-** NW 2.242E-4-** NNW3.154E-4-** All DirectionsCombined1.217E-35.323E-4 METEOROLOGY2.3-95WATTS BARWBNP-112* Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments 9.51 and 45.63 meters above ground. Wind speed and direction measured at 9.72-meter level. Joint percent valid data in data base = 93.7.**Less than 5% of the hours had nonzero X/Q values. Table 2.3-61a Calculated 1-hour Average Atmospheric Dispersion Factors (X/Q) At Minimum Distance (1100 Meters) Between Release Zone (100 M Radius) And Exclusion Area Boundary (1200 M Radius) For Watts Bar Nuclear Plant(Sheet 1 of 1)Based On Rg 1.145 And Meteorological Data For 1974 Through 1993*Plume Sector Direction 0.5th PercentileX/Q Value (sec/m3) 5th PercentileX/Q Value (sec/m3)N 3.674E-43.550E-5NNE3.808E-45.036E-5NE 4.597E-43.990E-5ENE5.305E-43.181E-5E 5.297E-42.989E-5ESE5.089E-42.572E-5SE 6.069E-44.769E-5SSE4.645E-42.375E-5S 3.452E-42.598E-5SSW3.171E-42.721E-5SW 3.703E-42.376E-5WSW4.728E-43.286E-5W 3.701E-4-** WNW1.452E-4-** NW 2.357E-4-** NNW3.239E-4-** All DirectionsCombined9.297E-35.263E-4 2.3-96METEOROLOGYWATTS BARWBNP-112* Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 96.9.**Less than 5% of the hours had nonzero X/Q values. Table 2.3-61b Calculated 1-hour Average Atmospheric Dispersion Factors (X/Q) At Minimum Distance (1100 Meters) Between Release Zone (100 M Radius) And Exclusion Area Boundary (1200 M Radius) For Watts Bar Nuclear Plant(Sheet 1 of 1)Based On Rg 1.145 And Meteorological Data For 1991 Through 2010*Plume Sector Direction 0.5th PercentileX/Q Value (sec/m3) 5th PercentileX/Q Value (sec/m3)N 3.681E-043.460E-05NNE4.601E-046.261E-05NE 5.285E-046.777E-05ENE6.276E-041.005E-04E 6.382E-041.386E-04ESE6.309E-048.259E-05SE 6.103E-044.620E-05SSE4.509E-042.383E-05S 3.044E-042.664E-05SSW2.463E-042.498E-05SW 3.080E-049.021E-06WSW3.244E-04** W 2.437E-04** WNW1.471E-04** NW 1.640E-04** NNW2.278E-04** All DirectionsCombined9.297E-045.486E-04 METEOROLOGY2.3-97WATTS BARWBNP-112 *Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.4.**Less than 5% of the hours had nonzero x/Q values.Table 2.3-62 Calculated 1-hour Average And Annual Average Atmospheric Dispersion Factors (X/Q) At Low Population Zone Distance (4828 Meters) For Watts Bar Nuclear PlantBased on R.G. 1.145 and Meteorological Data for 1974 Through 1988*Plume Sector Direction 0.5th Percentilex/Q Value (sec/m3)5th Percentilex/Q Value (sec/m3)Annual Averagex/Q Value (sec/m3)N 7.665E-54.828E-67.054E-7NNE7.799E-58.040E-61.150E-6 NE 9.809E-54.720E-61.225E-6 ENE1.298E-43.714E-61.282E-6 E 1.348E-44.333E-61.391E-6 ESE1.331E-43.357E-61.533E-6 SE 1.445E-41.060E-51.467E-6 SSE1.183E-4 3.148E-69.964E-7S 7.146E-53.246E-67.454E-7SSW6.759E-53.542E-67.091E-7SW 8.790E-51.467E-68.111E-7WSW1.206E-44.466E-69.701E-7W 9.350E-5-**4.400E-7WNW2.284E-5-**2.335E-7NW 4.944E-5-**2.507E-7NNW7.223E-5-**3.935E-7All DirectionsCombined2.717E-41.352E 2.3-98METEOROLOGYWATTS BARWBNP-112* Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.7.**Less than 5% of the hours had nonzero X/Q values.Table 2.3-62a Calculated 1-hour Average And Annual Average Atmospheric Dispersion Factors (X/Q) At Low Population Zone Distance (4828 Meters) For Watts Bar Nuclear PlantBased on R.G. 1.145 and Meteorological Data for 1974 Through 1993*Plume Sector Direction 0.5th PercentileX/Q Value (sec/m3)5th PercentileX/Q Value (sec/m3)Annual AverageX/Q Value (sec/m3)N 0.798E-45.094E-60.842E-6NNE0.845E-48.854E-61.386E-6 NE 1.135E-45.827E-61.639E-6 ENE1.338E-44.514E-61.561E-6 E 1.365E-44.128E-61.600E-6 ESE1.305E-43.181E-61.655E-6 SE 1.411E-47.997E-61.526E-6 SSE1.161E-4 2.853E-61.035E-6S 0.772E-43.211E-60.881E-6SSW0.731E-43.444E-60.814E-6SW 0.930E-42.451E-61.001E-6WSW1.239E-44.608E-61.212E-6W 0.897E-4-**0.469E-6WNW0.265E-4-**0.263E-6NW 0.502E-4-**0.272E-6NNW0.691E-4-**0.416E-6All DirectionsCombined2.797E-41.349E METEOROLOGY2.3-99WATTS BARWBNP-112* Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 96.9.**Less than 5% of the hours had nonzero X/Q values.Table 2.3-62b Calculated 1-hour Average And Annual Average Atmospheric Dispersion Factors (X/Q) At Low Population Zone Distance (4828 Meters) For Watts Bar Nuclear PlantBased on R.G. 1.145 and Meteorological Data for 1991 Through 2010*Plume Sector Direction 0.5th PercentileX/Q Value (sec/m3)5th PercentileX/Q Value (sec/m3)Annual AverageX/Q Value (sec/m3)N 8.003E-054.982E-068.135E-07NNE1.175E-041.139E-051.640E-06 NE 1.428E-041.178E-052.220E-06 ENE1.698E-041.824E-052.255E-06 E 1.784E-042.669E-052.541E-06 ESE1.703E-041.464E-052.640E-06 SE 1.554E-047.360E-061.568E-06 SSE1.159E-04 2.844E-069.011E-07S 6.924E-053.330E-067.804E-07SSW5.744E-052.958E-066.690E-07SW 6.975E-055.074E-077.880E-07WSW7.696E-05**6.594E-07W 5.371E-05**2.940E-07WNW2.669E-05**2.754E-07NW 3.036E-05**2.080E-07NNW4.656E-05**2.983E-07All DirectionsCombined2.798E-041.484E-04--

2.3-100METEOROLOGYWATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1974 through 1988. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.4.Table 2.3-63 Values Of 5th Percentile Overall Site 8-hour, 16-hour, 3-day, And 26-day Atmospheric Dispersion Factors (X/Q) At Low Population Zone Distance (4828 Meters) For Watts Bar Nuclear PlantBased on R.G. 1.145 Method of Logarithmic Interpolation Between Overall5th Percentile 1-hour X/Q Assumed to Apply for 2-hour Period and MaximumSector Annual Average X/Q (underscored in Table 2.3-62)*Averaging Period 5th PercentileX/Q Value (sec/m3) 8-hour6.447E-516-hour4.452E-5 3-day 1.993E-526-day 6.288E-6 METEOROLOGY2.3-101WATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1974 through 1993. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.7.Table 2.3-63a VALUES OF 5TH PERCENTILE OVERALL SITE 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTBased on RG 1.145 Method of Logarithmic Interpolation Between Overall5th Percentile 1-hour X/Q Assumed to Apply for 2-hour Period and MaximumSector Annual Average X/Q (from Table 2.3-62a)*Averaging Period 5th PercentileX/Q Value (sec/m3) 8-hour6.516E-516-hour4.529E-5 3-day 2.057E-526-day 6.621E-6 2.3-102METEOROLOGYWATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1991 through 2010. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 96.9.Table 2.3-63b VALUES OF 5TH PERCENTILE OVERALL SITE 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPHERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANTBased on RG 1.145 Method of Logarithmic Interpolation Between Overall5th Percentile 1-hour X/Q Assumed to Apply for 2-hour Period and MaximumSector Annual Average X/Q (from Table 2.3-62b)*Averaging Period 5th PercentileX/Q Value (sec/m3) 8-hour7.623E-0516-hour5.464E-05 3-day 2.652E-0526-day 9.395E-06 METEOROLOGY2.3-103WATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1974 through 1988. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.4.Table 2.3-64 0.5th Percentile Sector Values Of 8-hour, 16-hour, 3-day, And 26-day Atmospheric Dispersion Factors (X/Q) At Low Population Zone Outer Boundary Distance (4828 Meters) For Watts Bar Nuclear PlantBased on R.G. 1.145 Method of Logarithmic Interpolation Between 0.5th Percentile 1-hour X/Q for Each Sector and Annual Average X/Q for Same Sector.* Sector-Specific X/Q Values (sec/m3) Plume Sector 8-hour 16-hour 3-day 26-dayN 3.531E-52.396E-51.034E-53.090E-6NNE3.884E-52.741E-51.286E-54.342E-6NE 4.752E-53.308E-51.507E-54.874E-6ENE6.049E-54.130E-51.804E-55.492E-6E 6.328E-54.336E-51.909E-55.877E-6ESE6.363E-54.399E-51.975E-56.257E-6SE 6.765E-54.629E-52.032E-56.230E-6SSE5.370E-53.618E-51.536E-54.488E-6S 3.361E-52.305E-51.017E-53.139E-6SSW3.182E-52.183E-59.639E-62.980E-6SW 4.051E-52.750E-51.187E-53.550E-6WSW5.433E-53.647E-51.535E-54.433E-6W 3.855E-52.475E-59.465E-62.381E-6WNW1.071E-57.329E-63.221E-69.895E-7NW 2.064E-51.333E-55.167E-61.325E-6NNW3.051E-51.983E-S7.784E-62.033E-6 2.3-104METEOROLOGYWATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1974 through 1993. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 93.7.Table 2.3-64a 0.5th Percentile Sector Values Of 8-hour, 16-hour, 3-day, And 26-day Atmospheric Dispersion Factors (X/Q) At Low Population Zone Outer Boundary Distance (4828 Meters) For Watts Bar Nuclear PlantBased on RG 1.145 Method of Logarithmic Interpolation Between 0.5th Percentile 1-hour X/Q for Each Sector and Annual Average X/Q for Same Sector.*Sector-Specific X/Q Values (sec/m3)Plume Sector 8-hour 16-hour 3-day 26-dayN 3.760E-52.581E-51.141E-53.534E-6NNE4.281E-53.048E-51.458E-55.060E-6NE 5.631E-53.967E-51.855E-56.228E-6ENE6.412E-54.438E-51.997E-56.347E-6E 6.545E-54.532E-52.041E-56.494E-6ESE6.340E-54.418E-52.018E-56.553E-6SE 6.677E-54.592E-52.039E-56.353E-6SSE5.319E-53.601E-51.544E-54.579E-6S 3.683E-52.545E-51.141E-53.606E-6SSW3.475E-52.396E-51.070E-53.359E-6SW 4.397E-53.023E-51.341E-54.174E-6WSW5.765E-53.933E-51.715E-55.208E-6W 3.763E-52.438E-50.950E-52.458E-6WNW1.234E-50.843E-50.369E-51.124E-6NW 2.116E-51.375E-50.539E-51.406E-6NNW2.969E-51.946E-50.777E-52.084E-6 METEOROLOGY2.3-105WATTS BARWBNP-112*1-hour and annual average X/Qs calculated from meteorological data for 1991 through 2010. Meteorological facility located 0.8 km SSW of reactor site. Temperature instruments are 9.51 and 45.63 meters above ground. Wind speed and direction is measured at 9.72-meter level. Joint percent valid data in data base = 96.9.Table 2.3-64b 0.5th Percentile Sector Values Of 8-hour, 16-hour, 3-day, And 26-day Atmospheric Dispersion Factors (X/Q) At Low Population Zone Outer Boundary Distance (4828 Meters) For Watts Bar Nuclear PlantBased on RG 1.145 Method of Logarithmic Interpolation Between 0.5th Percentile 1-hour X/Q for Each Sector and Annual Average X/Q for Same Sector.*Plume Sector DirectionSector-Specific X/Q Values (sec/m3) 8-hour 16-hour 3-day 26-dayN 3.748E-052.565E-051.126E-053.453E-06NNE5.799E-054.074E-051.893E-056.302E-06NE 7.173E-055.084E-052.409E-058.242E-06ENE8.312E-055.815E-052.679E-058.801E-06E 8.835E-056.217E-052.900E-059.701E-06ESE8.549E-056.058E-052.869E-059.811E-06SE 7.269E-054.971E-052.180E-056.672E-06SSE5.194E-053.476E-051.454E-054.163E-06S 3.298E-052.276E-051.018E-053.207E-06SSW2.751E-051.904E-058.565E-062.721E-06SW 3.324E-052.295E-051.027E-053.236E-06WSW3.503E-052.364E-051.006E-052.954E-06W 2.270E-051.476E-065.800E-061.517E-06WNW1.253E-058.584E-063.779E-061.164E-06NW 1.332E-058.821E-063.608E-069.999E-07NNW2.020E-051.331E-055.378E-061.464E-06 2.3-106METEOROLOGYWATTS BARWBNP-112Table 2.3-65 Deleted by Amendment 107 METEOROLOGY2.3-107WATTS BARWBNP-112 a Hourly 10-m wind and 10- and 46-m temperature data. Meteorological facility located 0.8 km SSW of reactor site. b Calms assigned a wind speed of 0.3 mph. c Travel distance from 100-m radius release zone to 1200-m exclusion area boundary distance. d Actual 2-hour and 6-hour X/Q averaging periods were used. e Calms assigned a wind speed of 0.6 mph.Table 2.3-66 Atmospheric Dispersion Factors (X/Q), Sec/m3, For Design Basis Accident Analyses Based On Onsite Meteorological Data For Watts Bar Nuclear Planta(Sheet 1 of 1)A.Regulatory Guide 1.4 Results in original FSAR (5th percentile values) for July 1973 Through June 1975 Data.bPeriod(hours)Minimum Distance toExclusion Boundary (1100 m)c Low Population Zone (4828 m) 0-20.692E-3d0.160E-3d 2-8-0.844E-4d 8-24-0.854E-524-96-0.455E-596-720-0.198E-5B.Regulatory Guide 1.145 Results (maximum sector 0.5th percentile 1-hour value for 0-2 hours at exclusion area boundary and at low population zone; and 8-hour, 16-hour, 3-day and 26-day values for 2-8, 8-24, 24-96, and 96-720 hours from logarithmic interpolation between 0.5th percentile maximum sector 1-hour value at 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and corresponding sector annual average value at 8760 hours0.101 days <br />2.433 hours <br />0.0145 weeks <br />0.00333 months <br /> at low population zone) for 1974 through 1988 Datae.Period(1100 m)c(4828 m) 0-20.604E-30.145E-3 2-8-0.677E-4 8-24-0.463E-424-96-0.203E-496-720-0.623E-5 2.3-108METEOROLOGYWATTS BARWBNP-112 1. Hourly 10-m wind and 10 and 46-meter temperature data. Meteorological facility located 0.8 km SSW of reactor site.2. Calms assigned a wind speed of 0.3 mph.

3. Travel distance from 100-m radius release zone to 1200-m exclusion area boundary distance.4. Actual 2-hour and 6-hour X/Q averaging periods were used.

5. Calms assigned a wind speed of 0.6 mph.Table 2.3-66a Atmospheric Dispersion Factors (X/Q), Sec/m3, For Design Basis Accident Analyses Based On Onsite Meteorological Data For Watts Bar Nuclear Plant1A.Regulatory Guide 1.4 Results in original FSAR (5th percentile values) for July 1973 Through June 1975 Data.2Period(hours)Minimum Distance to Exclusion Boundary (1100 m)3 Low Population Zone (4828 m) 0-20.692E-340.160E-34 2-8-0.844E-44 8-24-0.854E-524-96-0.455E-596-720-0.198E-5B.Regulatory Guide 1.145 Results (maximum sector 0.5th percentile 1-hour value for 0-2 hours at exclusion area boundary and at low population zone; and 8-hour, 16-hour, 3-day and 26-day values for 2-8, 8-24, 24-96, and 96-720 hours from logarithmic interpolation between 0.5th percentile maximum sector 1-hour value at 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and corresponding sector annual average value at 8760 hours0.101 days <br />2.433 hours <br />0.0145 weeks <br />0.00333 months <br /> at low population zone) for 1974 through 1993 Data5.Period(hours)Minimum Distance toExclusion Boundary(1100 m)3Low Population Zone(4828 m) 0-20.607E-30.141E-3 2-8-0.668E-4 8-24-0.459E-424-96-0.204E-496-720-0.635E-5 METEOROLOGY2.3-109WATTS BARWBNP-112 *Hourly 10-m wind and 10- and 46-m temperature data. Meteorological facility located 0.8 km SSW of reactor site.Calms assigned a wind speed of 0.6 mph.**Travel distance from 100-m radius release zone to 1200-m exclusion area boundary distance.Table 2.3-66b Atmospheric Dispersion Factors (X/Q), Sec/m3, For Design Basis Accident Analyses Based On Onsite Meteorological Data For Watts Bar Nuclear PlantRegulatory Guide 1.145 Results (maximum sector 0.5th percentile 1-hour value for 0-2 hours at exclusion area boundary and at low population zone; and 8-hour, 16-hour, 3-day and 26-day values for 2-8, 8-24, 24-96 and 96-720 hours from logarithmic interpolation between 0.5th percentile maximum sector 1-hour value at 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and corresponding sector annual average value at 8760 hours0.101 days <br />2.433 hours <br />0.0145 weeks <br />0.00333 months <br /> at low population zone) for 1991 through 2010 Data*.Period(hours)Minimum Distance to Exclusion Boundary (1100 m**)Low Population Zone(4828 m) 0-26.382E-041.784E-04 2-88.835E-05 8-246.217E-0524-962.900E-0596-7209.811E-06 2.3-110METEOROLOGYWATTS BARWBNP-112 NOTE: The calculations for the 2-year data base were slightly conservative in comparison to those for the 15-year data base. The 2-year values were computed in 1976 with the speed assigned to calm hours assumed to be 0.3 mph. The 15-year values were computed in 1989 with the speed assigned to calms assumed to be 0.6 mph, which is the starting threshold for the anemometer. *Meteorological facility located 0.8 km SSW of reactor site.Table 2.3-67 Dispersion Meteorology - Onsite 10-meter Wind Data - 5th Percentile Values Of Inverse Wind Speed (1/u) Distributions For POST-LOCA Control Bay Dose Calculations For Watts Bar Nuclear PlantA.July 1973 through June 1975 Wind Speed and Direction DataPlume Sectors Averaging Periods (degrees) 1-hour8-hour16-hour3-day26-day 89.75-157.251.590.8340.6700.4470.348132.25-199.751.610.8640.6880.4960.361 154.75-222.251.440.7430.5980.4410.300 192.25-259.751.330.7190.6010.4370.302B.January 1974 through December 1988 Wind Speed and Direction DataPlume Sectors Averaging Periods (degrees) 1-hour8-hour16-hour3-day26-day 89.75-157.25 1.82 1.040.8520.5930.463132.25-199.75 1.270.7600.6260.4400.316 154.75-222.250.8660.5740.4970.3600.264192.25-259.75 1.040.6530.5760.4160.266 METEOROLOGY2.3-111WATTS BARWBNP-112 NOTE: The 2-year values were computed in 1976 with the speed assigned to calm hours assumed to be 0.3 mph. The 20-year values were computed in 1994 with the speed assigned to calms assumed to be 0.6 mph, which is the starting threshold for the anemometer. *Meteorological facility located 0.8 km SSW of reactor site.Table 2.3-67a Dispersion Meteorology - Onsite 10-meter Wind Data - 5th Percentile Values Of Inverse Wind Speed (1/u) Distributions For POST-LOCA Control Bay Dose Calculations For Watts Bar Nuclear PlantA.July 1973 through June 1975 Wind Speed and Direction DataPlume Sectors Averaging Periods (degrees) 1-hour8-hour16-hour3-day26-day 89.75-157.251.590.8340.6700.4470.348132.25-199.751.610.8640.6880.4960.361 154.75-222.251.440.7430.5980.4410.300 192.25-259.751.330.7190.6010.4370.302B.January 1974 through December 1993 Wind Speed and Direction DataPlume Sectors Averaging Periods (degrees) 1-hour8-hour16-hour3-day26-day89.75-157.25 1.97 1.04 0.862 0.6070.456132.25-199.75 1.29 0.784 0.626 0.4340.312154.75-222.25 0.891 0.606 0.516 0.3680.255192.25-259.75 1.10 0.713 0.610 0.4350.300 2.3-112METEOROLOGYWATTS BARWBNP-112 *Meteorological facility is located 0.8 km SSW of reactor site.Calms are assumed to be 0.6 mph.Table 2.3-67b Dispersion Meteorology - Onsite 10-meter Wind Data - 5th Percentile Values Of Inverse Wind Speed (1/u) Distributions For POST-LOCA Control Bay Dose Calculations For Watts Bar Nuclear PlantJanuary 1991 through December 2010 Wind Speed and Direction Data*Plume Sectors (degrees) Averaging Periods 1-hour8-hour16-hour3-day26-day 89.75-157.252.0341.2230.9570.6920.547132.25-199.751.1770.6800.5650.4130.304154.75-222.250.8280.5650.4940.3610.250192.25-259.750.8950.6090.5320.3820.265 METEOROLOGY2.3-113WATTS BARWBNP-112Table 2.3-68 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class A (Delta T<= -1.9 C/100 M) Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0010.0010.001 0.0000.0000.000 0.0000.0010.000 0.0020.0000.000 0.0000.0000.000 0.0000.0000.0050.0110.021 0.0340.0390.037 0.0170.0260.049 0.0700.0630.029 0.0070.0060.004 0.0040.0090.4260.0520.084 0.1000.0760.040 0.0230.0270.063 0.1800.3710.146 0.0200.0070.010 0.0070.0211.2260.0790.124 0.0800.0450.010 0.0020.0050.015 0.1420.5940.148 0.0180.0290.0110.0190.0381.3590.0950.181 0.0940.0170.004 0.0010.0040.0110.1210.7000.065 0.0400.0590.064 0.0520.0811.5890.0050.007 0.0000.0000.000 0.0000.0000.001 0.0200.0490.002 0.0060.0070.0050.0050.0120.1190.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0010.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.2440.418 0.3080.1750.092 0.0420.0640.140 0.5351.7780.390 0.0910.1080.093 0.0870.1614.725Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class A8030Total Hours Of Valid Wind Direction-Wind Speed-Stability Class A7945Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681441Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 6.72Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-114METEOROLOGYWATTS BARWBNP-112Table 2.3-69 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class B (-1.9< Delta T<= -1.7 C/100 M) Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.001 0.0000.0010.001 0.0020.0000.000 0.0010.0010.000 0.0000.0000.001 0.0000.0000.0070.0270.039 0.0810.0580.046 0.0260.0390.057 0.0770.0820.036 0.0070.0060.005 0.0070.0110.6060.0920.155 0.1470.0960.052 0.0220.0320.035 0.1480.3220.169 0.0370.0110.014 0.0150.0341.3830.0840.147 0.0900.0430.004 0.0000.0050.008 0.0750.2660.054 0.0150.0250.031 0.0330.0400.9230.1090.212 0.0770.0100.002 0.0000.0020.004 0.0390.1990.014 0.0210.0400.079 0.0710.0790.9580.0050.009 0.0010.0000.000 0.0000.0010.000 0.0140.0200.001 0.0010.0090.007 0.0080.0080.0830.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.3180.563 0.3960.2080.106 0.0510.0780.104 0.3540.8900.275 0.0810.0910.137 0.1350.1733.960Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class B6722Total Hours Of Valid Wind Direction-Wind Speed-Stability Class B6659Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681440Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 5.98Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-115WATTS BARWBNP-112Table 2.3-70 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class C (-1.7< Delta T<= -1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0010.001 0.0030.0010.005 0.0030.0020.002 0.0010.0010.001 0.0010.0010.000 0.0000.0000.0230.0600.1110.1390.1130.080 0.0540.0710.080 0.1280.1520.080 0.0230.0160.013 0.0200.0321.1710.1410.224 0.2210.1270.049 0.0280.0330.064 0.2300.4230.225 0.0490.0270.030 0.0360.0591.9680.1250.2090.1170.0300.005 0.0020.0020.009 0.0850.2560.070 0.0260.0390.049 0.0430.0641.1300.1510.260 0.0700.0050.002 0.0010.0010.004 0.0480.1770.0110.0150.0420.1110.0960.0981.0930.0070.013 0.0010.0010.000 0.0000.0000.002 0.0080.0190.0010.0010.0040.0100.0110.0110.0890.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.4850.817 0.5520.2770.140 0.0880.1090.161 0.5031.0280.3870.1170.1300.214 0.2060.2645.476Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class C9309Total Hours Of Valid Wind Direction-Wind Speed-Stability Class C9207Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681440Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 5.57Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-116METEOROLOGYWATTS BARWBNP-112Table 2.3-71 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class D (-1.5< Delta T<= -0.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0060.006 0.0070.0080.005 0.0030.0040.0060.0110.0150.010 0.0060.0050.004 0.0040.0040.1040.0500.052 0.0640.0950.126 0.0810.0900.133 0.1740.1450.167 0.1090.1210.095 0.0710.0421.6150.6560.697 0.7960.8400.478 0.2750.3690.566 1.1041.6101.060 0.5580.4060.353 0.3530.44510.5660.9961.241 1.0600.4790.137 0.0570.0760.160 0.6991.7960.790 0.2890.2930.394 0.4030.5669.4361.0631.206 0.4770.1150.022 0.0060.0220.035 0.2960.9270.202 0.1230.2580.491 0.5320.6316.4051.2031.182 0.2030.0380.005 0.0040.0140.034 0.2510.8150.097 0.0880.2560.520 0.6080.7956.1130.0340.072 0.0050.0020.000 0.0000.0010.014 0.0760.0760.004 0.0040.0080.021 0.0460.0340.3950.0000.002 0.0000.0000.000 0.0000.0010.000 0.0040.0020.000 0.0000.0000.000 0.0010.0000.0100.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0004.0074.458 2.6121.5770.774 0.4260.5750.949 2.6155.3862.329 1.1771.3471.879 2.0172.51734.645Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class D58946Total Hours Of Valid Wind Direction-Wind Speed-Stability Class D58253Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm168144175Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 4.96Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-117WATTS BARWBNP-112Table 2.3-72 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class E (-0.5< Delta T<= 1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0320.029 0.0390.0530.029 0.0140.0180.032 0.0770.1230.101 0.0720.0640.059 0.0480.0360.8270.1560.142 0.1690.2400.277 0.1670.2030.324 0.5190.6040.731 0.7360.6980.645 0.4610.2556.3260.4840.431 0.6060.8130.3100.1180.1490.321 1.0121.8641.2910.7110.5910.537 0.5070.45710.2010.6230.322 0.3660.1960.040 0.0240.0480.083 0.4151.1780.307 0.1470.1940.263 0.2790.3754.8620.3000.171 0.0680.0150.0110.0060.0250.051 0.1970.6450.121 0.0870.0830.099 0.1080.2472.2340.0620.047 0.0120.0040.003 0.0040.0170.039 0.1930.5160.062 0.0370.0340.037 0.0470.0921.2060.0020.003 0.0030.0010.000 0.0010.0020.007 0.0410.0510.002 0.0010.0000.0010.0020.0050.1210.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0010.0000.0020.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0001.6591.144 1.2641.3210.671 0.3330.4620.856 2.4544.9812.616 1.7921.6641.642 1.4531.46525.777Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class E44130Total Hours Of Valid Wind Direction-Wind Speed-Stability Class E43343Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681441390Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 3.03Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-118METEOROLOGYWATTS BARWBNP-112Table 2.3-73 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class F (1.5< Delta T<= 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0460.038 0.0500.0640.033 0.0150.0160.025 0.0560.1030.136 0.1670.1830.177 0.1710.0801.3600.2680.199 0.2180.2750.197 0.1210.1190.177 0.3130.4590.698 0.9941.2681.279 1.1980.5258.3070.1810.172 0.2660.3480.123 0.0270.0360.066 0.2360.5470.627 0.6390.5220.447 0.4720.2544.9630.0180.016 0.0290.0320.005 0.0000.0040.010 0.0320.1560.040 0.0230.0210.029 0.0340.0360.4860.0010.002 0.0020.0020.001 0.0000.0010.001 0.0040.0200.006 0.0020.0030.001 0.0020.0020.0490.0010.001 0.0000.0010.000 0.0000.0010.002 0.0020.0040.001 0.0010.0010.001 0.0010.0010.0160.0000.000 0.0000.0000.000 0.0000.0000.001 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.5150.429 0.5650.7210.358 0.1630.1760.282 0.6431.2901.507 1.8271.9991.933 1.8780.89715.181Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class F26048Total Hours Of Valid Wind Direction-Wind Speed-Stability Class F25526Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681442286Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 1.42Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-119WATTS BARWBNP-112Table 2.3-74 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class G (Delta T > 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 1986 - Dec 31, 2005WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0350.034 0.0480.0590.032 0.0160.0210.025 0.0360.0600.096 0.1620.1690.130 0.1270.0581.1090.2210.199 0.2710.3000.2020.1160.1450.173 0.2460.3670.569 0.9161.0360.825 0.7510.3566.6950.0660.077 0.1230.1880.058 0.0180.0230.032 0.0510.1230.222 0.4100.3510.240 0.2920.1202.3940.0010.001 0.0020.0040.002 0.0000.0000.001 0.0020.0050.002 0.0070.0020.004 0.0020.0020.0370.0000.000 0.0000.0010.000 0.0000.0000.000 0.0000.0010.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.3230.310 0.4440.5510.294 0.1510.1890.231 0.3350.5560.889 1.4951.5591.200 1.1730.53610.236Total Hours Of Valid Stability Observations170639Total Hours Of Stability Class G17454Total Hours Of Valid Wind Direction-Wind Speed-Stability Class G17211Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1681441864Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 1.14Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-120METEOROLOGYWATTS BARWBNP-112Table 2.3-75a Average Annual X/Q's out to 50 MilesSector1305 (m)2414 (m)4023 (m)5633 (m)7242 (m)12070 (m)24140 (m)40234 (m)56327 (m)72420 (m)N3.92E-061.59E-067.65E-074.78E-073.39E-071.68E-076.69E-083.42E-082.22E-081.61E-08NNE6.54E-062.65E-061.28E-067.99E-075.65E-072.81E-071.12E-075.72E-083.71E-082.69E-08NE6.66E-062.76E-061.36E-068.61E-076.14E-073.10E-071.25E-076.47E-084.22E-083.07E-08ENE7.79E-063.29E-061.65E-061.05E-067.58E-073.87E-071.58E-078.23E-085.39E-083.94E-08E8.32E-063.53E-061.77E-061.13E-068.14E-074.16E-071.70E-078.87E-085.81E-084.28E-08ESE7.45E-063.15E-061.57E-061.00E-067.19E-073.67E-071.49E-077.79E-085.10E-083.73E-08SE6.94E-062.94E-061.47E-069.38E-076.73E-073.43E-071.40E-077.30E-084.78E-083.50E-08SSE3.77E-061.57E-067.78E-074.93E-073.52E-071.78E-077.20E-083.73E-082.44E-081.77E-08S2.92E-061.19E-065.77E-073.61E-072.56E-071.28E-075.08E-082.60E-081.69E-081.22E-08SSW2.70E-061.09E-065.26E-073.29E-072.33E-071.16E-074.57E-082.34E-081.51E-081.09E-08SW3.09E-061.26E-066.17E-073.89E-072.77E-071.39E-075.55E-082.86E-081.86E-081.35E-08WSW3.50E-061.45E-067.12E-074.50E-073.21E-071.62E-076.52E-083.37E-082.20E-081.60E-08W2.09E-068.59E-074.22E-072.67E-071.90E-079.56E-083.85E-081.99E-081.29E-089.40E-09WNW1.11E-064.56E-072.24E-071.41E-071.01E-075.05E-082.03E-081.05E-086.81E-094.95E-09NW1.34E-065.51E-072.70E-071.70E-071.21E-076.10E-082.45E-081.26E-088.20E-095.96E-09NNW1.99E-068.12E-073.95E-072.48E-071.76E-078.82E-083.52E-081.81E-081.18E-088.52E-09 METEOROLOGY2.3-121WATTS BARWBNP-112Table 2.3-75b Average Annual D/Q's out to 50 MilesSector1305 (m)2414 (m)4023 (m)5633 (m)7242 (m)12070 (m)24140 (m)40234 (m)56327 (m)72420 (m)N6.32E-092.28E-099.45E-105.22E-103.32E-101.37E-104.18E-111.71E-119.24E-125.61E-12NNE1.35E-084.87E-092.02E-091.12E-097.10E-102.92E-108.94E-113.65E-111.98E-111.20E-11NE7.13E-092.57E-091.07E-095.89E-103.74E-101.54E-104.72E-111.92E-111.04E-116.33E-12ENE5.58E-092.01E-098.35E-104.61E-102.93E-101.21E-103.70E-111.51E-118.17E-124.96E-12E5.85E-092.11E-098.76E-104.84E-103.08E-101.27E-103.88E-111.58E-118.57E-125.20E-12ESE6.02E-092.17E-099.01E-104.98E-103.17E-101.30E-103.99E-111.63E-118.82E-125.35E-12SE5.90E-092.13E-098.82E-104.87E-103.10E-101.28E-103.91E-111.59E-118.63E-125.24E-12SSE5.11E-091.84E-097.64E-104.22E-102.68E-101.10E-103.38E-111.38E-117.47E-124.54E-12S6.41E-092.31E-099.59E-105.29E-103.37E-101.39E-104.24E-111.73E-119.38E-125.69E-12SSW6.91E-092.49E-091.03E-095.71E-103.63E-101.50E-104.58E-111.87E-111.01E-116.14E-12SW5.21E-091.88E-097.80E-104.31E-102.74E-101.13E-103.45E-111.41E-117.63E-124.63E-12WSW4.10E-091.48E-096.14E-103.39E-102.16E-108.88E-112.72E-111.11E-116.01E-123.65E-12W2.07E-097.45E-103.09E-101.71E-101.09E-114.47E-111.37E-115.58E-123.02E-121.83E-12WNW1.06E-093.84E-101.59E-108.79E-115.59E-112.30E-117.05E-122.87E-121.56E-129.46E-13NW1.41E-095.07E-102.10E-101.16E-107.39E-113.04E-119.31E-123.87E-122.06E-121.25E-12NNW2.31E-098.34E-103.46E-101.91E-101.21E-105.00E-111.53E-116.24E-123.38E-122.05E-12 2.3-122METEOROLOGYWATTS BARWBNP-112Table 2.3-76 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class A (Delta T < -1.9 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0010.000 0.0000.0000.000 0.0000.0010.000 0.0010.0010.001 0.0000.0000.000 0.0000.0000.0040.0140.016 0.0260.0260.025 0.0080.0160.029 0.0410.0370.024 0.0060.0060.006 0.0040.0090.2930.0650.097 0.0840.0590.033 0.0210.0160.0410.1170.3000.126 0.0200.0060.009 0.0090.0271.0300.1180.152 0.0770.0420.008 0.0020.0060.012 0.1290.5370.145 0.0190.0290.024 0.0280.0591.3860.1360.219 0.0720.0160.004 0.0010.0040.010 0.0990.5620.055 0.0390.0700.095 0.0870.1241.5920.0060.007 0.0000.0000.000 0.0000.0000.001 0.0150.0220.001 0.0070.0060.0050.0110.0110.0910.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.3400.490 0.2580.1440.069 0.0320.0420.093 0.4021.4590.351 0.0920.1170.139 0.1380.2304.398Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class A7524Total Hours Of Valid Wind Direction-Wind Speed-Stability Class A7473Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1699340Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 6.89Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-123WATTS BARWBNP-112Table 2.3-77 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class B (-1.9< Delta T <=-1.7 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.001 0.0010.0000.000 0.0000.0010.000 0.0000.0000.001 0.0000.0000.0040.0230.030 0.0580.0410.026 0.0190.0260.038 0.0550.0580.026 0.0080.0050.004 0.0050.0080.4300.1050.172 0.1390.0830.048 0.0260.0280.038 0.1420.3420.179 0.0400.0150.013 0.0210.0411.4320.0980.172 0.0780.0350.005 0.0010.0040.009 0.0810.2700.069 0.0150.0310.037 0.0340.0550.9960.1080.219 0.0590.0080.001 0.0000.0020.004 0.0450.1980.019 0.0190.0470.082 0.0780.0800.9700.0030.006 0.0000.0000.000 0.0000.0000.000 0.0100.0140.000 0.0010.0090.006 0.0090.0040.0630.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.3370.600 0.3340.1670.081 0.0470.0610.089 0.3340.8830.294 0.0840.1070.143 0.1470.1883.895Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class B6670Total Hours Of Valid Wind Direction-Wind Speed-Stability Class B6619Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1699340Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 6.08Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-124METEOROLOGYWATTS BARWBNP-112Table 2.3-78 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class C (-1.7< Delta T<= -1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.001 0.0020.0010.002 0.0010.0020.002 0.0010.0010.002 0.0010.0010.000 0.0000.0000.0160.0580.1080.1170.0970.069 0.0490.0620.0740.1160.1520.083 0.0240.0160.016 0.0210.0341.0970.1630.255 0.2060.1180.055 0.0360.0450.071 0.2520.4640.269 0.0580.0340.038 0.0420.0702.1760.1340.214 0.0890.0230.005 0.0030.0040.009 0.0850.2550.076 0.0270.0390.058 0.0520.0721.1430.1490.233 0.0520.0050.001 0.0010.0010.003 0.0470.1710.009 0.0210.0460.105 0.0950.1011.0410.0040.013 0.0010.0010.000 0.0000.0000.001 0.0060.0120.001 0.0020.0040.0060.0090.0060.0660.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0010.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.5080.824 0.4670.2450.132 0.0910.1140.159 0.5081.0560.440 0.1320.1390.224 0.2190.2825.541Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class C9494Total Hours Of Valid Wind Direction-Wind Speed-Stability Class C9416Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1699340Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 5.49Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-125WATTS BARWBNP-112Table 2.3-79 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class D (-1.5< Delta T <= -0.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0040.004 0.0050.0050.003 0.0020.0030.004 0.0080.0110.007 0.0040.0030.003 0.0020.0030.0710.0480.047 0.0500.0890.102 0.0810.0870.120 0.1590.1360.1630.1140.1190.084 0.0590.0351.4950.6640.702 0.7980.8340.517 0.3170.3920.620 1.1791.7361.138 0.5930.4210.373 0.3720.48111.1380.9701.162 0.9760.4470.144 0.0620.0820.178 0.7601.9340.853 0.3100.3130.438 0.4270.5589.6141.0491.020 0.4150.1010.023 0.0080.0240.039 0.2880.9220.204 0.1240.2310.521 0.5670.6556.1911.0870.979 0.1700.0360.005 0.0040.0130.032 0.2800.7700.094 0.0990.2520.478 0.5980.8395.7350.0240.057 0.0040.0020.000 0.0000.0000.009 0.0830.0590.004 0.0010.0080.018 0.0400.0350.3450.0000.002 0.0000.0000.000 0.0000.0010.000 0.0040.0010.000 0.0000.0000.000 0.0010.0000.0080.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0003.8473.973 2.4181.5150.794 0.4740.6021.003 2.7625.5672.462 1.2441.3471.915 2.0672.60734.598Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class D59374Total Hours Of Valid Wind Direction-Wind Speed-Stability Class D58793Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm169934121Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 4.86Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-126METEOROLOGYWATTS BARWBNP-112Table 2.3-80 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class E (-0.5< Delta T <= 1.5 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0200.018 0.0250.0330.018 0.0090.0110.020 0.0480.0820.068 0.0500.0460.040 0.0320.0220.5430.1310.122 0.1490.2080.237 0.1570.1830.300 0.4690.5610.701 0.7130.7030.617 0.4100.2115.8730.4740.423 0.5980.7900.322 0.1300.1510.294 0.9831.9281.348 0.8000.6870.600 0.5650.46710.5590.6090.304 0.3500.1880.043 0.0220.0450.085 0.4021.1810.308 0.1410.2010.295 0.2950.4254.8950.3240.161 0.0610.0120.012 0.0070.0230.046 0.1970.5750.109 0.0770.0780.100 0.1250.2902.1970.0580.0470.0110.0020.002 0.0040.0120.038 0.1830.3950.052 0.0310.0290.041 0.0590.0941.0570.0020.003 0.0040.0010.000 0.0000.0010.006 0.0310.0260.002 0.0000.0000.001 0.0020.0050.0840.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0000.000 0.0000.0000.000 0.0010.0000.0020.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0001.6181.078 1.1971.2350.636 0.3300.4250.789 2.3144.7492.588 1.8101.7451.693 1.4891.51325.209Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class E43451Total Hours Of Valid Wind Direction-Wind Speed-Stability Class E42839Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm169934923Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 3.03Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-127WATTS BARWBNP-112Table 2.3-81 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class F (1.5< Delta T <= 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0260.022 0.0270.0340.019 0.0090.0090.014 0.0330.0660.0880.1130.1320.1290.1100.0460.8760.2270.181 0.1760.2200.1670.1150.1070.152 0.2720.4240.687 1.0201.3891.4111.1590.4368.1430.1730.165 0.2370.3040.125 0.0280.0350.058 0.2380.5940.677 0.7280.6590.577 0.5460.2725.4150.0170.010 0.0280.0220.004 0.0000.0040.009 0.0330.1500.029 0.0190.0220.028 0.0340.0380.4470.0000.002 0.0020.0000.000 0.0000.0010.002 0.0030.0090.005 0.0020.0040.002 0.0040.0040.0370.0010.001 0.0010.0010.000 0.0000.0020.001 0.0010.0040.000 0.0020.0000.001 0.0000.0010.0140.0000.000 0.0000.0000.000 0.0000.0000.001 0.0000.0000.0000.0000.0000.000 0.0000.0000.0010.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.4440.381 0.4700.5800.315 0.1520.1570.236 0.5801.2471.486 1.8842.2072.148 1.8520.79614.933Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class F25798Total Hours Of Valid Wind Direction-Wind Speed-Stability Class F25377Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1699341489Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 1.47Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-128METEOROLOGYWATTS BARWBNP-112Table 2.3-82 Joint Percentage Frequencies Of Wind Direction and Wind Speed For Different Stability Classes Stability Class G (Delta T > 4.0 C/100 M), Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010WindWind Speed (MPH) DirectionCalm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5TotalNNNENEENEEESESESSESSSWSWWSWWWNWNWNNW SUBTOTAL0.0210.018 0.0240.0280.017 0.0100.0120.013 0.0230.0390.0690.1180.1340.108 0.0970.0390.7690.2150.177 0.2310.2350.1720.1170.1410.151 0.2670.4050.6641.1121.3591.123 0.9300.3837.6820.0710.068 0.0990.1510.057 0.0220.0220.028 0.0560.1370.282 0.5250.4890.364 0.4050.1592.9360.0020.000 0.0020.0010.001 0.0000.0000.001 0.0020.0060.003 0.0050.0020.005 0.0030.0040.0380.0000.000 0.0000.0010.000 0.0000.0000.000 0.0010.0010.000 0.0000.0000.000 0.0000.0000.0020.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.0000.3090.263 0.3570.4150.246 0.1480.1750.193 0.3490.5891.018 1.7601.9841.600 1.4350.58511.426Total Hours Of Valid Stability Observations171942Total Hours Of Stability Class G19631Total Hours Of Valid Wind Direction-Wind Speed-Stability Class G19417Total Hours Of Valid Wind Direction-Wind Speed-Stability ObservationsTotal Hours Calm1699341306Meteorological Facility: Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level Mean Wind Speed = 1.2Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-129WATTS BARWBNP-112Table 2.3-83 Joint Percentage Frequencies Of Wind Speed By Stability Classes Watts Bar Nuclear PlantJan 1, 1991 - Dec 31, 2010Wind SpeedStability Class(MPH)ABCDEFGCALM0.0000.0000.0000.0710.5430.8760.7690.6-1.40.0040.0040.0161.4955.8738.1437.6821.5-3.40.2930.4301.09711.13810.5595.4152.9363.5-5.41.0301.4322.1769.6144.8950.4470.0385.5-7.41.3860.9961.1436.1912.1970.0370.0027.5-12.41.5920.9701.0415.7351.0570.0140.00012.5-18.40.0910.0630.0660.3450.0840.0010.00018.5-24.40.0000.0010.0010.0080.0020.0000.000>=24.50.0000.0000.0000.0000.0000.0000.000Total4.3983.8955.54134.59825.20914.93311.426Total Hours Of Valid Stability Observations171942Total Hours Of Valid Wind Direction-Wind Speed-Stability Observations169934Total Hours of Observations175320Joint Recoverability Percentage96.9Meterological Facility Watts Bar Nuclear PlantStability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter Level 2.3-130METEOROLOGYWATTS BARWBNP-112THIS PAGE INTENTIONALLY BLANK METEOROLOGY 2.3-131WATTS BARWBNP-112Figure 2.3-1 Normal Sea Level Pressure Distribution Over North America and The North Atlantic Ocean METEOROLOGY 2.3-132WATTS BARWBNP-112Figure 2.3-2 Total Number of Forecast-Days of High Meteorological Potential For Air Pollution in a 5 Year Period METEOROLOGY 2.3-133WATTS BARWBNP-112Figure 2.3-3 Climatological Data Sources in Area Around Watts Bar Site METEOROLOGY 2.3-134WATTS BARWBNP-112Figure 2.3-4 Wind Speed at 9.72 Meters All Stability classes, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-135WATTS BARWBNP-112Figure 2.3-5 Wind Speed at 46.36 Meters All Stability Classes, Watts Bar Nuclear Plant, January 1, 1977 -December 31, 1993 METEOROLOGY 2.3-136WATTS BARWBNP-112Figure 2.3-6a Percent Occurrences Of Pasquill Stability Classes A, B, C, And D By Time Of Day, Watts Bar Nuclear Plant, 1974-1993 METEOROLOGY 2.3-137WATTS BARWBNP-112Figure 2.3-6b Percent Occurrences Of Pasquill Stability Classes E, F, and G By Time of Day, Watts Bar Nuclear Plant, 1974-1993 METEOROLOGY 2.3-138WATTS BARWBNP-112Figure 2.3-7 Wind Speed at 9.72 Meters for Stability Class A, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-139WATTS BARWBNP-112Figure 2.3-7a Wind Speed at 9.72 Meters for Stability Class A, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-140WATTS BARWBNP-112Figure 2.3-8 Wind Speed at 9.72 Meters for Stability Class B, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-141WATTS BARWBNP-112Figure 2.3-8a Wind Speed at 9.72 Meters for Stability Class B, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-142WATTS BARWBNP-112Figure 2.3-9 Wind Speed at 9.72 Meters for Stability Class C, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-143WATTS BARWBNP-112Figure 2.3-9a Wind Speed at 9.72 Meters for Stability Class C, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-144WATTS BARWBNP-112Figure 2.3-10 Wind Speed at 9.72 Meters for Stability Class D, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-145WATTS BARWBNP-112Figure 2.3-10a Wind Speed at 9.72 Meters for Stability Class D, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-146WATTS BARWBNP-112Figure 2.3-11 Wind Speed at 9.72 Meters for Stability Class E, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-147WATTS BARWBNP-112Figure 2.3-11a Wind Speed at 9.72 Meters for Stability Class E, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-148WATTS BARWBNP-112Figure 2.3-12 Wind Speed at 9.72 Meters for Stability Class F, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-149WATTS BARWBNP-112Figure 2.3-12a Wind Speed at 9.72 Meters for Stability Class F, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-150WATTS BARWBNP-112Figure 2.3-13 Wind Speed at 9.72 Meters for Stability Class G, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-151WATTS BARWBNP-112Figure 2.3-13a Wind Speed at 9.72 Meters for Stability Class G, Watts Bar Nuclear Plant, January 1, 1991 - December 31, 2010 METEOROLOGY 2.3-152WATTS BARWBNP-112Figure 2.3-14 Topography Within 10 Mile Radius - N METEOROLOGY 2.3-153WATTS BARWBNP-112Figure 2.3-15 Topography Within 10 Mile Radius - NNE METEOROLOGY 2.3-154WATTS BARWBNP-112Figure 2.3-16 Topography Within 10 Mile Radius - NE METEOROLOGY 2.3-155WATTS BARWBNP-112Figure 2.3-17 Topography Within 10 Mile Radius - ENE METEOROLOGY 2.3-156WATTS BARWBNP-112Figure 2.3-18 Topography Within 10 Mile Radius - E METEOROLOGY 2.3-157WATTS BARWBNP-112Figure 2.3-19 Topography Within 10 Mile Radius - ESE METEOROLOGY 2.3-158WATTS BARWBNP-112Figure 2.3-20 Topography Within 10 Mile Radius - SE METEOROLOGY 2.3-159WATTS BARWBNP-112Figure 2.3-21 Topography Within 10 Mile Radius - SSE METEOROLOGY 2.3-160WATTS BARWBNP-112Figure 2.3-22 Topography Within 10 Mile Radius - S METEOROLOGY 2.3-161WATTS BARWBNP-112Figure 2.3-23 Topography Within 10 Mile Radius - SSW METEOROLOGY 2.3-162WATTS BARWBNP-112Figure 2.3-24 Topography Within 10 Mile Radius - SW METEOROLOGY 2.3-163WATTS BARWBNP-112Figure 2.3-25 Topography Within 10 Mile Radius - WSW METEOROLOGY 2.3-164WATTS BARWBNP-112Figure 2.3-26 Topography Within 10 Mile Radius - W METEOROLOGY 2.3-165WATTS BARWBNP-112Figure 2.3-27 Topography Within 10 Mile Radius - WNW METEOROLOGY 2.3-166WATTS BARWBNP-112Figure 2.3-28 Topography Within 10 Mile Radius - NW METEOROLOGY 2.3-167WATTS BARWBNP-112Figure 2.3-29 Topography Within 10 Mile Radius Watts Bar FSAR Section 2.0 Site Characteristics