ML12171A069

Unit 2 - Final Safety Analysis Report (Fsar), Amendment 105, 2.0 Site Characteristics

ML12171A069
Person / Time
Site:	Watts Bar
Issue date:	08/12/2011
From:	Tennessee Valley Authority
To:	Office of Nuclear Reactor Regulation
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Download: ML12171A069 (260)

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Table of Contents 2-iWATTS BARTABLE OF CONTENTS SectionTitle Page2.0SITE 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.

2.2DESCRIPTION

S2.2-1 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 CONTENTS SectionTitle Page2.3.1.2GENERAL CLIMATE2.3-12.3.1.3SEVERE WEATHER2.3-2 2.3.2LOCAL METEOROLOGY2.3-6 2.3.2.1DATA SOURCES2.3-6 2.3.2.2NORMAL AND EXTREME VALUES OF METEOROLOGICAL PARAMETERS2.3-62.3.2.3POTENTIAL INFLUENCE OF TH E PLANT AND ITS FACILITIES ON LOCAL METEOROLOGY2.3-92.3.2.4LOCAL 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 METEOROLOGY2.3-132.3.4SHORT-TERM (ACCIDENT) DIFFUSION ESTIMATES2.3-142.3.4.1OBJECTIVE2.3-14 2.3.4.2CALCULATION RESULTS2.3-16 2.3.5LONG-TERM (ROUTINE) DIFFUSION ESTIMATES2.3-172.4HYDROLOGIC 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 CONSIDERATIONS2.4-6 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 DETERMINATIONS2.4-172.4.3.6COINCIDENT WIND WAVE ACTIVITY2.4-17 2.4.4POTENTIAL DAM FAILURES, SEISMICALLY INDUCED2.4-20 Table of Contents2-iiiWATTS BARTABLE OF CONTENTS SectionTitle Page2.4.4.1DAM FAILURE PERMUTATIONS2.4-212.4.4.2UNSTEADY FLOW ANALYSIS OF POTENTIAL DAM FAILURES2.4-322.4.4.3WATER LEVEL AT PLANTSITE2.4-32 2.4.5PROBABLE MAXIMUM SURGE AND SEICHE FLOODING2.4-33 2.4.6PROBABLE MAXIMUM TSUNAMI FLOODING2.4-33 2.4.7ICE EFFECTS2.4-33 2.4.8COOLING WATER CANALS AND RESERVOIRS2.4-34 2.4.9CHANNEL DIVERSIONS2.4-34 2.4.10FLOODING PROTECTION REQUIREMENTS2.4-352.4.11LOW WATER CONSIDERATIONS2.4-35 2.4.11.1 LOW FLOW IN RIVERS AND STREAMS2.4-35 2.4.11.2LOW WATER RESULTING FROM SURGES, SEICHES, OR TSUNAMI2.4-362.4.11.3HISTORICAL LOW WATER2.4-36 2.4.11.4FUTURE CONTROL2.4-36 2.4.11.5PLANT REQUIREMENTS2.4-36 2.4.12DISPERSION, DILUTION, AND TR AVEL TIMES OF ACCIDENTAL RELEASES OF LIQUID EFFLUENTS2.4-372.4.12.1RADIOACTIVE LIQUID WASTES2.4-37 2.4.12.2ACCIDENTAL SLUG RELEASES TO SURFACE WATER2.4-372.4.12.3EFFECTS ON GROUND WATER2.4-40 2.4.13GROUNDWATER2.4-41 2.4.

13.1DESCRIPTION

AND ON-SITE USE2.4-41 2.4.13.2SOURCES2.4-41 2.4.13.3ACCIDENT EFFECTS2.4-42 2.4.13.4MONITORING AND SAFEGUARD REQUIREMENTS2.4-43 2.4.13.5DESIGN BASIS FOR SUBSURFACE HYDROSTATIC LOADING2.4-442.4.14FLOODING PROTECTION REQUIREMENTS2.4-442.4.

14.1INTRODUCTION

2.4-44 2.4.14.2PLANT OPERATION DURING FLOODS ABOVE GRADE2.4-45 2.4.14.3WARNING SCHEME2.4-48 2.4.14.4PREPARATION FOR FLOOD MODE2.4-48 2.4.14.5EQUIPMENT2.4-49 2.4.14.6SUPPLIES2.4-50 2.4.14.7PLANT RECOVERY2.4-50 2-ivTable of ContentsWATTS BARTABLE OF CONTENTS SectionTitle Page2.4.14.8WARNING PLAN2.4-512.4.14.9BASIS FOR FLOOD PROT ECTION PLAN IN RAINFALL FLOODS2.4-522.4.14.10BASIS FOR FLOOD PROTECTI ON PLAN IN SEISMIC-CAUSED DAM FAILURES2.4-562.4.14.11SPECIAL CONDITION ALLOWANCE2.4-572.5GEOLOGY, 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 INVESTIGATIONS2.5-562.5.4STABILITY 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 Table of Contents 2-vWATTS BARTABLE OF CONTENTS SectionTitle Page2.5.4.5EXCAVATIONS AND BACKFILL2.5-932.5.4.6GROUNDWATER CONDITIONS2.5-101 2.5.4.7RESPONSE 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 CONTENTS SectionTitle PageTHIS PAGE INTENTIONALLY BLANK List of Tables2-viiWATTS BARLIST OF TABLES SectionTitleTABLE 2.1-1WATTS BAR 2000 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITE (SHEET 1 OF 1)TABLE 2.1-2WATTS BAR 2010 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-3WATTS BAR 2020 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-4WATTS BAR 2030 POPULATION DISTRIBUTION

WITHIN 10 MILES OF THE SITETABLE 2.1-5WATTS BAR 2040 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-6WATTS BAR 2050 POPULATION DISTRIBUTION WITHIN 10 MILES OF THE SITETABLE 2.1-7WATTS BAR 2060 POPULATION DISTRIBUTION

WITHIN 10 MILES OF THE SITETABLE 2.1-8WATTS BAR 2000 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-9WATTS BAR 2010 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-10WATTS BAR 2020 POPULATION DISTRIBUTION

WITHIN 50 MILES OF THE SITETABLE 2.1-11WATTS BAR 2030 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-12WATTS BAR 2040 POPULATION DISTRIBUTION

WITHIN 50 MILES OF THE SITETABLE 2.1-13WATTS BAR 2050 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITE 2-viiiList of TablesWATTS BARLIST OF TABLES SectionTitleTABLE 2.1-14WATTS BAR 2060 POPULATION DISTRIBUTION WITHIN 50 MILES OF THE SITETABLE 2.1-15WATTS BAR 2009 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-16WATTS BAR 2010 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-17WATTS BAR 2020 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-18WATTS BAR 2030 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-19WATTS BAR 2040 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-20WATTS BAR 2050 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-21WATTS BAR 2060 ESTIMATED PEAK RE CREATION VISITATION WITHIN 10 MILES OF THE SITETABLE 2.1-22SCHOOL ENROLLMENTS WITHIN 10 MILES OFWATTS BAR NUCLEAR PLANTTABLE 2.2-1WATERBORNE HAZARD OUS 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 COOPERTIVE OBSERVER DATAA(DATA IN °F)

List of Tables2-ixWATTS BARLIST OF TABLES SectionTitleTABLE 2.3-3TEMPERATURE DATACHATTANOOGA, TENNESSEE NATIONAL WEATHER SERVICEA(DATA IN °F)TABLE 2.3-4PRECIPITATION DATA WATTS 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 DATA CHATTANOOGA AND KNOXV ILLE, 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 HUMIDITY WATTS BAR NUCLEAR PLANT METEOROLOGICAL FACILITY (SHEET 1 OF 2)(DATA IN PERCENT)

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

JANUARY 1, 1976 - DECEMBER 31, 2008 *TABLE 2.3-11ABSOLUTE HUMIDITY WATTS 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 TABLES SectionTitleTABLE 2.3-11ABSOLUTE HUMIDITY WATTS 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 FR EQUENCIES OF WIND SPEED BY WIND DIRECTION DISREGARDING STABILITY CLASSWATTS BAR NUCLEAR PLANT JAN 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 DIRECT ION PERSISTENCE DATA DISREGARDING STABILITY, WATTS BAR NUCLEAR PLANTTABLE 2.3-16WIND DIRECT ION 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 TABLES SectionTitleTABLE 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 TABLES SectionTitleTABLE 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 OCCU RRENCE 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 FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR

STABILITY CLASS A (D ELTA T<=-1.9 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-46JOINT PERCENTAGE FR EQUENCIES 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 FR EQUENCIES 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 FR EQUENCIES 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 FR EQUENCIES 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 TABLES SectionTitleTABLE 2.3-50JOINT PERCENTAGE FR EQUENCIES 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 FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS G (DELTA T > 4.0 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-52JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-53 JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS A (D ELTA T<=-1.9 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-54JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR

STABILITY CLASS B (-1.9< D ELTA T<=-1.7 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-55JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS C (-1.7< D ELTA T<=-1.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-56JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS D (-1.5< D ELTA T<=-0.5 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-57JOINT PERCENTAGE FR EQUENCIES 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 FR EQUENCIES OF WIND SPEED BY WIND DIRECTION FOR STABILITY CLASS F (1.5< D ELTA T<= 4.0 C/100 M), WATTS BAR NUCLEAR PLANTTABLE 2.3-59JOINT PERCENTAGE FR EQUENCIES 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 TABLES SectionTitleTABLE 2.3-60JOINT PERCENTAGE FR EQUENCIES OF WIND SPEED BY STABILITY CLASS, WATTS BAR NUCLEAR PLANTTABLE 2.3-61CALCULATED 1-HO UR 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-HO UR 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 DISTANC E (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 DISTANC E (4828 METERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-63VALUES OF 5TH PE RCENTILE 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 PE RCENTILE 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 M ETERS) FOR WATTS BAR NUCLEAR PLANTTABLE 2.3-650.5TH PERCENTILE SECTOR VALUES OF 8-HOUR, 16-HOUR, 3-DAY, AND 26-DAY ATMOSPH ERIC DISPERSION FACTORS (X/Q) AT LOW POPULATION ZONE OUTER BOUNDARY DISTANCE (4828 METERS) FOR WATTS BAR NUCLEAR PLANT List of Tables2-xvWATTS BARLIST OF TABLES SectionTitleTABLE 2.3-66ATMOSPHERIC DISPERSI ON FACTORS (X/Q), SEC/M3, FOR DESIGN BASIS ACCIDENT ANALYSES BASED ON ONSITE METEOROLOGICAL DATA FOR WATTS BAR NUCLEAR PLANTATABLE 2.3-66AATMOSPHERIC DISPERSI ON FACTORS (X/Q), SEC/M3, FOR DESIGN BASIS ACCIDENT ANALYSES BASED ON ONSITE METEOROLOGICAL DATA FOR WATTS BAR NUCLEAR PLANT1TABLE 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 PLANTTABLE 2.3-68JOINT PERCENTAGE FR EQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS A (D ELTA T<= -1.9 C/100 M) WATTS BAR NUCLEAR PLANT

JAN 1, 1986 - DEC 31, 2005TABLE 2.3-69JOINT PERCENTAGE FR EQUENCIES 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 FR EQUENCIES 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 FR EQUENCIES 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 FR EQUENCIES 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, 2005 2-xviList of TablesWATTS BARLIST OF TABLES SectionTitleTABLE 2.3-73JOINT PERCENTAGE FR EQUENCIES 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 FR EQUENCIES OF WIND DIRECTION AND WIND SPEED FOR DIFFERENT STABILITY CLASSES STABILITY CLASS G (D ELTA T > = 4.0 C/100 M), WATTS BAR NUCLEAR PLANT JAN 1, 1986 - DEC 31, 2005TABLE 2.3-75AAVERAGE ANNUAL X/Q' S AND D/Q'S OUT TO 50 MILESTABLE 2.3-75BAVERAGE ANNUAL X/Q' S AND D/Q'S OUT TO 50 MILESTABLE 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 T VA DAMS AND RESERVOIRSTABLE 2.4-3TVA DAMS - RIVE R MILE DISTANCES TO WBNPTABLE 2.4-4FACTS ABOUT T VA DAMS ABOVE CHICKAMAUGATABLE 2.4-5FACTS ABOUT N ON-TVA DAMS AND RESERVOIRSTABLE 2.4-6FLOOD DETENTION CAPA CITY - 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 DES CRIPTION AND COEFFICIENTSOF DISCHARGE FOR AREAS 3 AND 4TABLE 2.4-9DRAINAGE AR EA PEAK DISCHARGETABLE 2.4-10SEASONAL VARIATI ONS OF RAINFALL (PMP)TABLE 2.4-11PROBABLE MAXIMUM STORM PRECIPITATION AND PRECIPITATION EXCESSTABLE 2.4-12HISTORICAL FLOOD EVENTS TABLE 2.4-13UNIT HYDROGRAPH DATATABLE 2.4-14FLOODS FROM POST ULATED SEISMIC FAILURE OF UPSTREAM DAMSTABLE 2.4-15WELL AND SPRING INVENTORY WITHIN 2-MILE RADIUS OF WATTS BAR NUCLEAR PLANT SI TE List of Tables2-xviiWATTS BARLIST OF TABLES SectionTitleTABLE 2.4-16DELETED BY AMENDMENT 98TABLE 2.5-1SOIL STRENGTH TESTS TABLE 2.5-2WATTS BAR NUCLEAR PLAN T SOIL INVESTIGATION 500-KV TRANSFORMER YARD

SUMMARY

OF LABORATORY TEST

DATATABLE 2.5-3WATTS BAR NUCLEAR PLAN T SOIL INVESTIGATION 500-KV TRANSFORMER YARD

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-4WATTS BAR NUCLEAR PLANT SOIL INVEST IGATION NORTH COOLING TOWER

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-5WATTS BAR NUCLEAR PL ANT 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 SUPPLY

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-8WATTS BAR NUCLEAR PLANTINTAKE CHANNELSOIL INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-9WATTS BAR NUCLEAR PLANTINTAKE CHANNELSOIL INVESTIGATION

SUMMARY

OF LABORATORY TEST DATA (SHEET 1 OF 2)TABLE 2.5-10WATTS BAR NUCLEAR PLANT CLASS IE CONDUITSSOIL INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-11WATTS BAR NUCLEAR PLANT CLASS IE CONDUITSSOIL INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-12SOIL DESIGN VALUES 2-xviiiList of TablesWATTS BARLIST OF TABLES SectionTitleTABLE 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 BUILDINGTABLE 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 PROPER TIES - ADDITIONAL DIESEL GENERATOR BUILDINGTABLE 2.5-17CDYNAMIC SOIL PROPERTIES - REFUELING WATER STORAGE TANKSTABLE 2.5-17DDYNAMIC SOIL PROPER TIES - NORTH STEAM VALVE ROOMTABLE 2.5-18WATTS BAR NUCLEAR PLANTBORROW INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-19WATTS BAR NUCLEAR PLANTADDITIONAL BORROW AREAS

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-19ASOIL PROPERTIES, BORROW AREA 7TABLE 2.5-20GROUT USAGE TABLE 2.5-21WATTS BAR NUCLEAR PLANT INTAKE CHANNEL

SUMMARY

OF LABORATORY TEST DATA REMOLDED CHANNEL AREA SOILSTABLE 2.5-22TVA SOIL TESTING LABORATORY

SUMMARY

OF TEST RESULTS WATTS BAR LIQUEFACTION STUDYTABLE 2.5-23WATERWAYS EXPERIMENT STATION, CORPS OF ENGINEERS List of Tables2-xixWATTS BARLIST OF TABLES SectionTitleTABLE 2.5-24WATTS BAR NUCLEAR PLANT ERCW AND HPFP SYSTEMSSOIL INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-25WATTS BAR NUCLEAR PLANT

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-26WATTS BAR NUCLEAR PLANTINTAKE CHANNEL SAND MATERIAL

SUMMARY

OF CYCLIC LOADING TEST DATATABLE 2.5-27WATTS BAR NUCLEAR PLANTINTAKE CHANNEL CLAY MATERIAL

SUMMARY

OF STATIC TEST DATA TABLE 2.5-28DRILL ROD LENGTHS AND WEIGHTS VERSUS SPT SAMPLE D

EPTHS APPLYING TO 1976 AND 1979 REPORTSTABLE 2.5-29WATTS BAR NUCLEAR PLANTERCW CONDUIT 1976 REPORTTABLE 2.5-30WATTS BAR NUCLEAR PLANTERCW CONDUIT

1976 REPORTTABLE 2.5-31RECOMMENDED PR OCEDURES AND GUIDELINESFOR STANDARD PENETRATION TESTINGTABLE 2.5-32DRILL ROD LENGTHS AND WEIGHTS VERSUS SPT 1981 REPORTTABLE 2.5-33WATTS BAR NUCLEAR PLANTERCW CONDUIT 1981 REPORTTABLE 2.5-34WATTS BAR NUCLEAR PLANT ESSENTIAL RAW COOLIN G WATER PIPING SYSTEMLIQUEFACTION INVESTIGATION

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-35LABORATORY PROCED URE FOR PERFORMING CYCLIC TRIAXIAL R TESTSTABLE 2.5-36RESULTS OF STRESS-CONTROLLED CYCLIC TRIAXIAL TESTS ON ERCW ROUTE SOILS 2-xxList of TablesWATTS BARLIST OF TABLES SectionTitleTABLE 2.5-37

SUMMARY

OF CLASSIFICATION DATATABLE 2.5-38

SUMMARY

OF CLASSIFICATION DATA TABLE 2.5-39

SUMMARY

OF CLASSIFICATION DATATABLE 2.5-40

SUMMARY

OF CLASSIFICATION DATATABLE 2.5-41COMPARISON OF CL ASSIFICATION AND DENSITYDATA OF TEST PIT AND UNDISTRIBUTED BORING SAMPLESTABLE 2.5-42WATTS BAR NUCLEAR PLANT SOIL-SUPPORTED STRUCTURES REPRESENTATIVE BASAL GRAVEL SAMPLES

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-43WATTS BAR NUCLEAR PLANTSOIL-SUPPORT STRUCTURES UNDISTRIBUTED SAMPLING

SUMMARY

OF LABORATORY TEST DATA TABLE 2.5-44WBNP - BEARING CAPACITY - CATEGORY I SOIL-SUPPORTED STRUCTURES

ADOPTED SOIL PROPERTIES FOR BEARING CAPACITY DETE RMINATIONTABLE 2.5-45WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION TRENCH A

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-45AWATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION, TRENCH A SUPPLEMENTAL BORROW

SUMMARY

OF LABORATORY TEST DATA BORROW SOIL CLASSESTABLE 2.5-46WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION TRENCH B

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-47WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION

BORROW AREA 9

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSES List of Tables2-xxiWATTS BARLIST OF TABLES SectionTitleTABLE 2.5-48WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 10

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-49WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 11

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-50WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 12

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-51WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 13

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-52WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 2C

SUMMARY

OF LABORATORY TEST DATABORROW SOIL CLASSESTABLE 2.5-53WATTS BAR NUCLEAR PLANT ERCW LIQUEFACTION BORROW AREA 2C EXTENSION

SUMMARY

OF LABORATORY TEST DATA BORROW SOIL GROUPSTABLE 2.5-54

SUMMARY

OF LABORATORY TEST DATATABLE 2.5-55GRANULAR MATE RIAL DESIGN VALUES SECTION 1032 MATERIALTABLE 2.5-56WATTS BAR NUCLEAR PLANT RELATIVE DENSITY TEST RESULTS ON ENGINEEREDGRANULAR FILL BENEATH THE DIESEL GENERATOR BUILDINGTABLE 2.5-57WATTS BAR NUCLEAR PLANT SIEVE ANALYSIS OF 1032 GRAVEL TENNESSEE VALLEY AUTHORITY 2-xxiiList of TablesWATTS BARLIST OF TABLES SectionTitleTABLE 2.5-58WATTS BAR NUCLEAR PLANT ERCW - PIEZOMETERS WATER LEVEL READINGSTABLE 2.5-59ERCW ROUTE LIQUEFACTION EVALUATIONMAXIMUM AND AVERAGE ELEMENT STRESSES AND PEAK

ACCELERATION AT THE TOP OF EACH LAYERTABLE 2.5-60FACTORS OF SAFETY WITH DEPTH WHEN THE WATER TABLE IS NOT CONSIDEREDTABLE 2.5-61FACTORS OF SAFETY WI TH DEPTH ASSUMING THE WATER TABLE IS 16.5 FEET BELOW GROUND SURFACETABLE 2.5-62

SUMMARY

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 2.5-63

SUMMARY

OF SPT SAMPLES OF SILTS (ML) BELOW ERCW PIPELINES HAVING FACTOR OF SAFETY LESS THAN UNITY FOR 0.4 G PEAK GROUND SURFACE ACCELERATIONTABLE 2.5-64

SUMMARY

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 CAPACI TIES AND FACTORS OF SAFETY FOR SOIL-SUPPORTED CATEGORY I STRUCTURES List of Figures2-xxiiiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.1-1LOCATION OF WATTS BAR NUCLEAR PLANT SITEFIGURE 2.1-2WATTS BAR SI TE LOCATION 0-50 MILESFIGURE 2.1-3WATTS BAR SI TE 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 POPU LATION WITHIN 30 MILES/ 500 PERSONS PER SQUARE MILEFIGURE 2.1-212060 CUMULATIVE POPU LATION 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 FO R AIR POLLUTION IN A 5 YEAR PERIODFIGURE 2.3-3CLIMATOLOGICAL DATA SOURCES IN AREA AROUND WATTS BAR SITE 2-xxivList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 M ETERS 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 2.3-8WIND SPEED AT 9.72 METERS FOR STABILITY CLASS B, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-9WIND SPEED AT 9.72 METERS FOR STABILITY CLASS C, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER 31, 1993FIGURE 2.3-10WIND SPEED AT 9.72 METERS FOR STABILITY CLASS D, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER

31, 1993FIGURE 2.3-11WIND SPEED AT 9.72 METERS FOR STABILITY CLASS E, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 -DECEMBER 31, 1993FIGURE 2.3-12WIND SPEED AT 9.72 METERS FOR STABILITY CLASS F, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 -DECEMBER 31, 1993FIGURE 2.3-13WIND SPEED AT 9.72 METERS FOR STABILITY CLASS G, WATTS BAR NUCLEAR PLANT, JANUARY 1, 1974 - DECEMBER

31, 1993FIGURE 2.3-14TOPOGRAPHY WITHIN 10 MILE RADIUS - N FIGURE 2.3-15TOPOGRAPHY WITHIN 10 MILE RADIUS - NNE FIGURE 2.3-16TOPOGRAPHY WITHIN 10 MILE RADIUS - NEFIGURE 2.3-17TOPOGRAPHY WITHIN 10 MILE RADIUS - ENEFIGURE 2.3-18TOPOGRAPHY WITHIN 10 MILE RADIUS - E List of Figures2-xxvWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 SYSTEMFIGURE 2.4-3SEASONAL OPERATING CURVE, CHICKAMAUGA (SHEET 1 OF 12)FIGURE 2.4-3SEASONAL OPERATING CU RVE, WATTS BAR (SHEET 2 OF 12)FIGURE 2.4-3SEASONAL OPERATING CU RVE, FORT LOUDOUN - TELLICO (SHEET 3 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, BOONE (SHEET 4 OF 12)

FIGURE 2.4-3SEASONAL OPERATING CU RVE, CHEROKEE (SHEET 5 OF 12)FIGURE 2.4-3SEASONAL OPERATING CU RVE, DOUGLAS (SHEET 6 OF 12)FIGURE 2.4-3SEASONAL OPERATING CU RVE, FONTANA (SHEET 7 OF 12)FIGURE 2.4-3SEASONAL OPERATING CURVE, FORT PATRICK HENRY (SHEET 8 OF 12)FIGURE 2.4-3SEASONAL OPERATING CU RVE, 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 CU RVE, WATAUGA (SHEET 12 OF 12)FIGURE 2.4-4RESERVOIR ELEVATIO N - STORAGE RELATIONSHIP, CHICKAMAUGA (SHEET 1 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION -

STORAGE RELATIONSHIP, WATTS BAR (SHEET 2 OF 13) 2-xxviList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-4RESERVOIR ELEVATION -

STORAGE RELATIONSHIP, FORT LOUDOUN (SHEET 3 OF 13)FIGURE 2.4-4RESERVOIR ELEVATIO N - STORAGE RELATIONSHIP, TELLICO (SHEET 4 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION - STORAGE RELATIONSHIP, BOONE (SHEET 5 OF 13)FIGURE 2.4-4RESERVOIR ELEVATIO N - STORAGE RELATIONSHIP, CHEROKEE (SHEET 6 OF 13)FIGURE 2.4-4RESERVOIR ELEVATIO N - STORAGE RELATIONSHIP, DOUGLAS (SHEET 7 OF 13)FIGURE 2.4-4RESERVOIR ELEVATIO N - 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 ELEVATIO N - STORAGE RELATIONSHIP, MELTON HILL (SHEET 10 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION -

STORAGE RELATIONSHIP, NORRIS (SHEET 11 OF 13)FIGURE 2.4-4RESERVOIR ELEVATION -

STORAGE RELATIONSHIP, SOUTH HOLSTON (SHEET 12 OF 13)FIGURE 2.4-4RESERVOIR ELEVATIO N - 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 PR ECIPITATION ISOHYETS FOR 7980 SQ. MI. EVENT, CENTERED AT BULLS GAP, TNFIGURE 2.4-8RAINFALL TIME DISTRI BUTION - 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)

List of Figures2-xxviiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-10UNIT HYDROGRAPHS, AR EAS 33, 34, 36 (SHEET 7 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AREAS 35, 37 (SHEET 8 OF 11)FIGURE 2.4-10UNIT HYDROGRAPHS, AR EAS 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 CU RVE, 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 CU RVE, TELLICO DAM (SHEET 4 OF 13)FIGURE 2.4-11DISCHARGE RATING CU RVE, BOONE DAM (SHEET 5 OF 13)FIGURE 2.4-11DISCHARGE RATING CU RVE, 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)FIGURE 2.4-11DISCHARGE RATING CURVE, FORT PATRICK HENRY DAM (SHEET 9 OF 13)FIGURE 2.4-11DISCHARGE RATING CU RVE, 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 CU RVE, WATAUGA DAM (SHEET 13 OF 13)FIGURE 2.4-12FORT LOUDOUN - TELLI CO 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 MO DEL FORT LOUDOUN - TELLICO RESERVOIR MAY 2003 FLOOD (SHEET 1 OF 3)FIGURE 2.4-14UNSTEADY FLOW MO DEL FORT LOUDOUN - TELLICO RESERVOIR MAY 2003 FLOOD (SHEET 2 OF 3) 2-xxviiiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-14UNSTEADY FLOW MO DEL 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 MOD EL WATTS BAR RESERVOIR MARCH 1973 FLOODFIGURE 2.4-17UNSTEADY FLOW MODEL WATTS BAR RESE RVOIR 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 RATI NG CURVE, WATTS BAR DAMFIGURE 2.4-23PMF DISCHARGE HYDROGRAPH AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-24WEST SADDLE DIKE LOCATION PLAN AND SECTIONFIGURE 2.4-25PMF ELEVATION HYDR OGRAPH AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-26PROBABLE MAXIMUM FLOOD AND BOTTOM PROFILES FIGURE 2.4-27MAIN PLANT GENERAL GRADING PLANFIGURE 2.4-28WATTS BAR NUCLEA R 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 USED FIGURE 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 PLAN FIGURE 2.4-40CYARD SITE GRADING AND DRAINAGE SYSTEM FOR FLOOD STUDIESFIGURE 2.4-40D-1MAIN PLANT PLANT PERIMETER ROADS PLAN AND PROFILE SHEET 1 List of Figures2-xxixWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 1FIGURE 2.4-40EACCESS HIGHWAY TVA DWG. 1001H201 R4 - SHEET 2 FIGURE 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 83FIGURE 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 2.4-61WATTS BAR PROBABLE MAXIMUM FLOOD WATER LEVELS BEFORE AND AFTER EMBANKMENT FAILUREFIGURE 2.4-62RELATIVE BORE HEIGHT (AFTER J. J. STROKER, REF. 31)FIGURE 2.4-63ASSUMED LIMITS OF EMBANKMENT FAILURE WAVE EXPANSIONFIGURE 2.4-64WATTS BAR NUCLEAR PLANT PROBABLE MAXIMUM FLOOD ELEVATIONFIGURE 2.4-65THRU FIGURE 2.4-67 ARE NOT USED FIGURE 2.4-68POWERHOUSE & SPILLWAY RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - WATTS BAR DAMFIGURE 2.4-69EMBANKMENT RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKEFIGURE 2.4-70DELETED BY AMENDMENT 83 2-xxxList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-71POWERHOUSE & SPILLWAY RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQ UAKE - FORT LOUDOUN DAMFIGURE 2.4-72EMBANKMENT RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - FORT LOUDOUN DAMFIGURE 2.4-73DELETED BY AMENDMENT 103FIGURE 2.4-74EMBANKMENT RESULTS OF ANALYSIS FOR OPERATING BASIS EARTHQUAKE - TELLICO DAMFIGURE 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 PROJECTFIGURE 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 63FIGURE 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 ASSU MED CONDITION OF DAM AFTER FAILURE SSE COMBINED WITH A 25 YEAR FL OOD TELLICO PROJECT List of Figures2-xxxiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-90NORRIS DAM SSE + 25 YEAR FLOOD JUDGED CONDITION OF DAM AFTER FAILURE - NORRIS DAMFIGURE 2.4-91SSE WITH EPICEN TER 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 GR OUND - WATER OBSERVATION WELLSFIGURE 2.4-105GENERALIZED WATER-TABLE CONTOUR MAP JANUARY 1972FIGURE 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 SA FE SHUTDOWN FOR PLANT FLOODING - WINTER EVENTS FIGURE 2.4-110 (SHEET 2)WATTS BAR NUCLEAR PLANT RAINFALL FLOOD WARNING TIME BASIS FOR SA FE SHUTDOWN FOR PLANT FLOODING - SUMMER EVENTS 2-xxxiiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.4-111DELETED BY AMENDMENT 103FIGURE 2.4-112OBE WITH EPIC ENTER WITHIN AREA SHOWNFIGURE 2.4-113SSE FAILURE OF NORRIS, CHEROKEE, DOUGLAS, AND TELLICO DAMS WITH 25-YEAR FLOOD

FAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 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 EVENT FAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 2.4-116OBE FAILURE OF CHEROKEE, DOUGLAS AND TELLICO DAMS WITH 1/2 PMF EVENT

FAILURE WAVE AT WATTS BAR NUCLEAR PLANTFIGURE 2.5-1REGIONAL PHYSIOGRAPHIC MAP FIGURE 2.5-2REGIONAL GEOLOGIC MAPFIGURE 2.5-3SUBREGIONAL GEOLOG IC SETTING (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-4REGIONAL TECTONIC MAPFIGURE 2.5-5REGIONAL BOUGUER GRAVITY ANOMALY MAP FIGURE 2.5-6REGIONAL MAGNETIC MAPFIGURE 2.5-7REGIONAL FAULT MAPFIGURE 2.5-8SUBREGIONAL FAULT MAP FIGURE 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 OVER SIZED FIGURES FILE)FIGURE 2.5-12CORE DRILL HOLE AND SEISMIC REFRACTION LOCATIONS FIGURE 2.5-13CORE DRILL LAYOUT AND

SUMMARY

FIGURE 2.5-14GRAPHIC LOG HOLE 1 STA. C-60+00FIGURE 2.5-15GRAPHIC LOG HOLE 2 STA. C-64+00 FIGURE 2.5-16GRAPHIC LOG HOLE 3 STA. C-68+00 FIGURE 2.5-17GRAPHIC LOG HOLE 4 STA. E-60+00FIGURE 2.5-18GRAPHIC LOG HOLE 5 STA. E-62+00FIGURE 2.5-19GRAPHIC LOG HOLE 6 STA. E-64+00 List of Figures2-xxxiiiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-20GRAPHIC LOG HOLE 7 STA. E-66+00FIGURE 2.5-21GRAPHIC LOG HOLE 8 STA. E-88+40 FIGURE 2.5-22GRAPHIC LOG HOLE 9 STA. G-60+00FIGURE 2.5-23GRAPHIC LOG HOLE 10 STA. G-62+00FIGURE 2.5-24GRAPHIC LOG HOLE 11 STA. G-64+00 FIGURE 2.5-25GRAPHIC LOG HOLE 12 STA. G-66+00FIGURE 2.5-26GRAPHIC LOG HOLE 13 STA. G-68+00FIGURE 2.5-27GRAPHIC LOG HOLE 14 STA. J-60+00 FIGURE 2.5-28GRAPHIC LOG HOLE 15 STA. J-62+00FIGURE 2.5-29GRAPHIC LOG HOLE 16 STA. J-64+00FIGURE 2.5-30GRAPHIC LOG HOLE 17 STA. J-66+00 FIGURE 2.5-31GRAPHIC LOG HOLE 18 STA. J-82+25FIGURE 2.5-32GRAPHIC LOG HOLE 19 STA. L-60+00FIGURE 2.5-33GRAPHIC LOG HOLE 20 STA. L-6L+00 FIGURE 2.5-34GRAPHIC LOG HOLE 21 STA. L-62+00FIGURE 2.5-35GRAPHIC LOG HOLE 22 STA. L-64+00FIGURE 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+00FIGURE 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+00 FIGURE 2.5-50GRAPHIC LOG HOLE 37 STA. N-63+00FIGURE 2.5-51GRAPHIC LOG HOLE 38 STA. N-64+00FIGURE 2.5-52GRAPHIC LOG HOLE 39 STA. N-65+00 2-xxxivList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 - 46.5FIGURE 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 - 151.5 List of Figures2-xxxvWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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+00FIGURE 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 - 51.5 2-xxxviList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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

SUMMARY

FIGURE 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 FIGURE 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 PROFILE List of Figures2-xxxviiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-123FAULT SHOWN CUTTING ACROSS AUXILIARY BUILDING AT A4+28 FEET AND EAST-WES T 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 FE ET 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 REACTO R #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.FIGURE 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.

2-xxxviiiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 INTERSECTI NG DISINTEGRATED SHALE POCKETFIGURE 2.5-141PLANE VIEW ONTO THE 673 ELEVATIONFIGURE 2.5-142PLANE VIEW ONTO THE 671 ELEVATION FIGURE 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 1972FIGURE 2.5-147ISOSEISMAL MAP MAXIMUM EFFECTS 1811-1812 NEW MADRID EARTHQUAKEFIGURE 2.5-148ISOSEISMAL MA P 1811 NEW MADRID EARTHQUAKEFIGURE 2.5-149FELT AREA MAPSFIGURE 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 CHATTANO OGA EARTHQUAKEFIGURE 2.5-156ISOSEISMAL MAP 1968 SOUTHERN ILLINOIS EARTHQUAKE List of Figures2-xxxixWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 MA P MARYVILLE-ALC OA 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 WESTFIGURE 2.5-169INDEX MAP -EARTH QUAKES 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 -EARTH QUAKES 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-174EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-175EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WEST 2-xlList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-176EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-177EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-178EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-179EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-180EARTHQUAKES LIST ING 4.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-181INDEX MAP -EARTH QUAKES 6.3 RICHTER OR GREATER LATITUDE 30-37 NORTH LONGITUDE 78-92 WESTFIGURE 2.5-182EARTHQUAKES LIST ING 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 PLANFIGURE 2.5-185AYARD SOIL BORINGS LOCATION PLANFIGURE 2.5-186TRANSFORMER YARD & SWITCHYARD SOIL INVESTIGATIONFIGURE 2.5-187COOLING TOWERS SOIL INVESTIGATIONFIGURE 2.5-188PUMPING STATI ON FOUNDATION INVESTIGATIONFIGURE 2.5-189OFFICE & SERVICE BUILDING FOUNDATION INVESTIGATIONFIGURE 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 INVESTIGATION List of Figures2-xliWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 CONDUI T ALIGNMENT S-DIRECT SHEARFIGURE 2.5-209TYPE 1-SOFT SHA LE TYPE 2-HARD SHALE -TYPE 3 LIMESTONEFIGURE 2.5-210LOCATION OF TEST HOLESFIGURE 2.5-211DEFORMATION MODULI FROM MENARD PRESSUREMETER TESTSFIGURE 2.5-212COMPARISON OF MODU LI OBTAINED WITH MENARD PRESSUREMETER AND BIRDWELL 3D SONIC LOGGERFIGURE 2.5-213INFLUENCE FACTORS FOR DETERMINING STRESSES BELOW THE CENTER OF FLEXIBLE CIRCULAR FOOTING 10, 50, 100, AND 200 FT. IN DIAMETERFIGURE 2.5-214E IA 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 SOILS 2-xliiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-221YARD SOIL INVESTIGATIONS BORROW SOILSFIGURE 2.5-221AYARD SOIL INVE STIGATIONS BORROW SOILSFIGURE 2.5-222BORROW INVESTIGATION (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-223ADDITIONAL BORROW EXPLORATIONFIGURE 2.5-224ADDITIONAL BORROW AREA 4FIGURE 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 +

53SFIGURE 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 -S HEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233BCLASS A BACKFILL -D AMPING RATIO VARIATION WITH SHEAR STRAINFIGURE 2.5-233CCRUSHED STONE BACK FILL - SHEAR MODULUS REDUCTION WITH SHEAR STRAINFIGURE 2.5-233DCRUSHED STONE BACK FILL - 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 STRAIN List of Figures 2-xliiiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 - SH EAR 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 AR EAS, MOISTURE - PENETRATION TESTFIGURE 2.5-235COMPACTION TEST BORROW AREAS (FAMILY OF CURVES)FIGURE 2.5-236AOPERATING BASIS EA RTHQUAKE RESPONSE SPECTRA FOR ROCK SUPPORT STRUCTURESFIGURE 2.5-236BSAFE SHUTDOWN EA RTHQUAKE RESPONSE SPECTRA FOR ROCK SUPPORT STRUCTURESFIGURE 2.5-237INTAKE CHANNEL SEISMIC STABILITY ANALYSISFIGURE 2.5-238STATIC DESIGN CASE 2FIGURE 2.5-239INTAKE CHA NNEL-LATERAL EXCAVATION &

REPLACEMENTFIGURE 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 NUCLEA R PLANT BORROW AREA 4R - (CONSOLIDATE UNDRAINED) 95% STD PROCTOR DENSITY

3% BELOW OPTIMUM MOIS TURE REMOLDED SAMPLESFIGURE 2.5-246BORROW AREA 4 S -(DI RECT SHEAR) 95% STD PROCTOR DENSITY 3% BELOW OPTIMUM MOISTURE REMOLDED SAMPLES 2-xlivList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 CHANNE L - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM SIDE OF INTAKE CHANNEL WITH BEDROCK AT 656FIGURE 2.5-257INTAKE CHANNE L - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM SIDE OF INTAKE CHANNEL WITH BEDROCK AT 650FIGURE 2.5-258INTAKE CHANNE L - LATERAL EXCAVATION AND REPLACEMENT UPSTREAM RESERVOIR END WITH ROCKFILL PLACED AT 665FIGURE 2.5-259INTAKE CHANNE L - LATERAL EXCAVATION AND REPLACEMENT DOWNSTREAM RESERVOIR END WITH ROCKFILL PLACED AT EL. 650FIGURE 2.5-260SOIL PROFILE - BO RROW AREA 7, BORING PAH-1FIGURE 2.5-261SOIL PROFILE - BO RROW AREA 7, BORING PAH-2FIGURE 2.5-262SOIL PROFILE - BO RROW AREA 7, BORING PAH-3FIGURE 2.5-263SOIL PROFILE - BO RROW AREA 7, BORING PAH-4FIGURE 2.5-264SOIL PROFILE - BO RROW AREA 7, BORING PAH-5FIGURE 2.5-265SOIL PROFILE - BO RROW AREA 7, BORING PAH-6 List of Figures2-xlvWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-266SOIL PROFILE - BO RROW AREA 7, BORING PAH-7FIGURE 2.5-267SOIL PROFILE - BO RROW 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 - BO RROW AREA 7, BORING PAH-10FIGURE 2.5-270SOIL PROFILE - BO RROW AREA 7, BORING PAH-11FIGURE 2.5-271COMPACTION TEST (FAMILY OF CURVES) - BORROW AREA 7FIGURE 2.5-272MOISTURE - PEN ETRATION 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 BANKSFIGURE 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 PROFILE FIGURE 2.5-283SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-283SOIL PROFILE (SHEET 2 OF 2)FIGURE 2.5-284SOIL PROFILE FIGURE 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 2-xlviList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-289SOIL PROFILE (SHEET 1 OF 2)FIGURE 2.5-289SOIL PROFILE (SHEET 2 OF 2)

FIGURE 2.5-290SOIL PROFILEFIGURE 2.5-291SOIL PROFILEFIGURE 2.5-292SOIL PROFILE (SHEET 1 OF 2)

FIGURE 2.5-292SOIL PROFILE (SHEET 2 OF 2FIGURE 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)FIGURE 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 PROFILE FIGURE 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)

List of Figures2-xlviiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 PROFILE FIGURE 2.5-324SOIL PROFILEFIGURE 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) 2-xlviiiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 2.5-343LIQUEFACTIONFIGURE 2.5-344LIQUEFACTIONFIGURE 2.5-345LIQUEFACTION FIGURE 2.5-346LIQUEFACTIONFIGURE 2.5-347LIQUEFACTIONFIGURE 2.5-348LIQUEFACTION FIGURE 2.5-349LIQUEFACTIONFIGURE 2.5-350LIQUEFACTIONFIGURE 2.5-351LIQUEFACTION FIGURE 2.5-352LIQUEFACTIONFIGURE 2.5-353RESULTS OF STRESS CONTROLLED CYCLIC TRIAXIAL TESTS ON ERCW ROUTE SOILSFIGURE 2.5-354LIQUEFACTION STUDY ERCW PIPELINEFIGURE 2.5-355LIQUEFACTION STUDY ERCW PIPELINE FIGURE 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 INVESTIGATION List of Figures2-xlixWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 STRUCTURESFIGURE 2.5-369SOIL SUPPORTED STRUCTURESFIGURE 2.5-370SOIL SUPPORTED STRUCTURES FIGURE 2.5-371SOIL SUPPORTED STRUCTURESFIGURE 2.5-372GRAVEL BORING NO. 125FIGURE 2.5-373GRAVEL BORING NO. 129 FIGURE 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 PROFILE FIGURE 2.5-378SOIL PROFILE FIGURE 2.5-379SOIL PROFILEFIGURE 2.5-380SOIL PROFILEFIGURE 2.5-381SOIL PROFILE FIGURE 2.5-382SOIL PROFILE 2-lList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 PROFILE FIGURE 2.5-387SOIL PROFILEFIGURE 2.5-388SOIL PROFILEFIGURE 2.5-389SOIL PROFILE FIGURE 2.5-390SOIL PROFILEFIGURE 2.5-391ASOIL PROFILEFIGURE 2.5-392SOIL PROFILE FIGURE 2.5-393SOIL PROFILEFIGURE 2.5-394SOIL PROFILEFIGURE 2.5-395SOIL PROFILE FIGURE 2.5-396SOIL PROFILEFIGURE 2.5-397SOIL PROFILEFIGURE 2.5-398SOIL PROFILE FIGURE 2.5-399SOIL PROFILEFIGURE 2.5-400SOIL PROFILEFIGURE 2.5-401SOIL PROFILE FIGURE 2.5-402SOIL PROFILEFIGURE 2.5-403SOIL PROFILEFIGURE 2.5-404SOIL PROFILE FIGURE 2.5-405SOIL PROFILE FIGURE 2.5-406SOIL PROFILEFIGURE 2.5-407SOIL PROFILEFIGURE 2.5-408SOIL PROFILE FIGURE 2.5-409SOIL PROFILEFIGURE 2.5-410SOIL PROFILE List of Figures 2-liWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 PROFILEFIGURE 2.5-426SOIL PROFILEFIGURE 2.5-427SOIL PROFILE FIGURE 2.5-428SOIL PROFILEFIGURE 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 PROFILE FIGURE 2.5-441SOIL PROFILEFIGURE 2.5-442SOIL PROFILEFIGURE 2.5-443SOIL PROFILE 2-liiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 PROFILEFIGURE 2.5-459SOIL PROFILEFIGURE 2.5-460SOIL PROFILE FIGURE 2.5-461SOIL PROFILEFIGURE 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 PROFILE FIGURE 2.5-474SOIL PROFILEFIGURE 2.5-475SOIL PROFILEFIGURE 2.5-476SOIL PROFILE List of Figures2-liiiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 PROFILEFIGURE 2.5-492SOIL PROFILEFIGURE 2.5-493SOIL PROFILE FIGURE 2.5-494SOIL PROFILEFIGURE 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 PROFILE FIGURE 2.5-507SOIL PROFILEFIGURE 2.5-508SOIL PROFILEFIGURE 2.5-509SOIL PROFILE 2-livList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 CONTENTFIGURE 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 LIQU EFACTION TRENCH BFIGURE 2.5-527ERCW LIQUEF ACTION BORROW AREA 9FIGURE 2.5-528ERCW LIQUEF ACTION BORROW AREA 10FIGURE 2.5-529ERCW LIQUEF ACTION BORROW AREA 11FIGURE 2.5-530ERCW LIQUEF ACTION BORROW AREA 12FIGURE 2.5-531ERCW LIQUEF ACTION BORROW AREA 13FIGURE 2.5-532ERCW LIQUEF ACTION BORROW AREA 2CFIGURE 2.5-533ERCW LIQUEF ACTION BORROW AREA 2C List of Figures2-lvWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-534ERCW LIQU EFACTION TRENCH AFIGURE 2.5-535ERCW LIQUEFACTION TRENCH A SUPPLEMENTAL BORROWFIGURE 2.5-536ERCW LIQU EFACTION TRENCH BFIGURE 2.5-537ERCW LIQUEF ACTION BORROW AREA 9FIGURE 2.5-538ERCW LIQUEF ACTION BORROW AREA 10FIGURE 2.5-539ERCW LIQUEF ACTION BORROW AREA 11FIGURE 2.5-540ERCW LIQUEF ACTION BORROW AREA 12FIGURE 2.5-541ERCW LIQUEF ACTION BORROW AREA 13FIGURE 2.5-542ERCW LIQUEF ACTION BORROW AREA 2CFIGURE 2.5-543ERCW LIQUEF ACTION 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)FIGURE 2.5-546WATTS BAR NUCLEAR PL ANT GRANULAR FILL (1032) Q- (UNCONSOLIDATED - UNDRAINED) 80% RELATIVE DENSITY (ASTM D2049)FIGURE 2.5-547WATTS BAR NUCLEAR PL ANT GRANULAR FILL (1032) R- (CONSOLIDATED-UNDRAINED) S-DIRECT: SHEAR 80%

RELATIVE DENSITY (ASTM D2049)FIGURE 2.5-548

SUMMARY

. OF GRANULAR FILL TEST DATA -

RELACIVE"DENSITY DIESEL GENERATOR BUILDINGFIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FI LE) (SHEET 1 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FI LE) (SHEET 2 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FI LE) (SHEET 3 OF 4)FIGURE 2.5-549ERCW PIPELINE SECTION A-A (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FI LE) (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-D 2-lviList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 OVER SIZED FIGURES FILE)FIGURE 2.5-556CATEGORY I ELECTRICAL CONDUITS SECTION H-H (ACTUAL FIGURE LOCATED IN OVER SIZED FIGURES FILE)FIGURE 2.5-557CLASS IE CONDUITFIGURE 2.5-558CLASS IE CONDUITFIGURE 2.5-559CLASS IE CONDUIT FIGURE 2.5-560CLASS IE CONDUITFIGURE 2.5-561CLASS IE CONDUITFIGURE 2.5-562CLASS IE CONDUIT FIGURE 2.5-563CLASS IE CONDUITFIGURE 2.5-564ERCU & HPFP SYSTEMFIGURE 2.5-565ERCU & HPFP SYSTEM FIGURE 2.5-566INTAKE CHANNEL GRAIN SIZE ANALYSISFIGURE 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)

List of Figures 2-lviiWATTS BAR LIST OF FIGURES SectionTitleFIGURE 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 ELECTRIC AL CONDUITS SECTION F-F (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 1 OF 2)FIGURE 2.5-576CATEGORY I ELECTRIC AL CONDUITS SECTION F-F (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)(SHEET 2 OF 2)FIGURE 2.5-577CATEGORY I ELECTRIC AL CONDUITS SECTION G-G (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-578CATEGORY I ELECTRIC AL 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 LIQUEFACTION TVA DWGNO. 10N213-2 R6FIGURE 2.5-582YARD CATEGORY I ERCW PIPING AND CONDUITS - PLANFIGURE 2.5-583REMEDIAL TREA TMENT 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 -SETTLEM ENT STATIONS -BENCH MARK ASSEMBLYFIGURE 2.5-586SETTLEMENT VS. TIME FOR UNIT 1 REACTOR BUILDING 2-lviiiList of FiguresWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-587SETTLEMENT VS. TIME FOR UNIT 2 REACTOR BUILDINGFIGURE 2.5-588MAXIMUM SETTLEM ENT -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 & IN TAKE 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 DETECTORS TVA DWG NO. 10N203-3 R1FIGURE 2.5-591WATTS BAR DAM PROBABILITY DISTRIBUTION: NOVEMBER - MARCH RAINFALL PERIOD 1940 - 1983FIGURE 2.5-592YARD ERCW PIPELINE EST. 25-YR HIGH WATER TABLEFIGURE 2.5-593WATER TABLE PROFILESFIGURE 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 2.5-598

SUMMARY

OF EARTHFILL TEST DATA - DENSITY FIGURE 2.5-599

SUMMARY

OF EARTHFILL TEST DATA -MOISTURE CONTENTFIGURE 2.5-600

SUMMARY

OF EART HFILL TEST DATA -DENSITYFIGURE 2.5-601

SUMMARY

OF EARTHFILL TEST DATA -MOISTURE CONTENT FIGURE 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)

List of Figures2-lixWATTS BAR LIST OF FIGURES SectionTitleFIGURE 2.5-605YARD UNDERGROUND BARRIER TRENCH B STA 4 + 50 (ACTUAL FIGURE LOCATED IN OVERSIZED FIGURES FILE)FIGURE 2.5-606

SUMMARY

OF FILL TEST DATA -DENSITY FIGURE 2.5-607

SUMMARY

OF EARTHFILL TEST DATA - MOISTURE CONTENTFIGURE 2.5-608

SUMMARY

OF EART HFILL TEST DATA -DENSITYFIGURE 2.5-609

SUMMARY

OF EARTHFILL TEST DATA - MOISTURE CONTENTFIGURE 2.5-610

SUMMARY

OF GRANULAR FILL TEST DATA - RELATIVE DENSITY 2-lxList of FiguresWATTS BAR LIST OF FIGURES SectionTitleTHIS PAGE INTENTIONALLY BLANK GEOGRAPHY AND DEMOGRAPHY 2.1-1WATTS BARWBNP-1052.0 SITE CHARACTERISTICS2.1 GEOGRAPHY AND DEMOGRAPHY2.1.1 Site Location and Description

2.1.1.1 Specificat ion 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 Watts Bar Steam 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-105 2.1.1.3 Boundaries for Esta blishing 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 Traffi c 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-105Considerations 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 Populati on 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 th e site overlaid by circles and sixteen compass sectors.

2.1.3.2 Population Be tween 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-105There are, in addition, a number of sm aller 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 Popul ation 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-105that 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-105Table 2.1-1 Watts Bar2000 Population DistributionWithin 10 Miles of the Site(Sheet 1 of 1)DistanceFrom Site(Miles)Direction0-11-22-33-44-55-100-10 NNNE NE ENE E ESE SE SSE SSSW SWWSW W WNW NWNNWTOTAL 0 0

0 0

0 0

4 10 8 0

0 0

0 0

0 0 22 9 0

0 0

4 0

0 0

0 0

0 4 10 0 75 0102 0 9

9 9210 0 0

0 0 10 0 25 15 15230 0532 0200 150 150 150 13 14120 0 0

0 41 70 87260 1201,375 66 90140 140 300 20 19201 966 0 0 87 62 55364 852,595 1,674862 403 242 1,553377 406 614 1,863266 727 492 491 339 1,837 2,15614,302 1,749 1,161702 541 2,217410 443 945 2,837276 727 649 648 496 2,766 2,36118,928 GEOGRAPHY AND DEMOGRAPHY 2.1-7WATTS BARWBNP-105Table 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 0832562894052,0443,077NNW000134952,3992,628TOTAL 27113 6191,599 3,08516,55621,999 2.1-8GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 0001481052,6582,911TOTAL 351267351,8953,79019,53126,112 GEOGRAPHY AND DEMOGRAPHY 2.1-9WATTS BARWBNP-105Table 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 01023143554972,5073,775NNW0001641162,9423,222TOTAL 42 1418542,2054,52022,64830,410 2.1-10GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 01093343785292,6694,019NNW0001741233,1323,429TOTAL 481529452,4275,05024,88333,505 GEOGRAPHY AND DEMOGRAPHY 2.1-11WATTS BARWBNP-105Table 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 01173594065692,8714,322NNW0001881333,3693,690TOTAL 55 1631,045 2,6895,67327,53437,159 2.1-12GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 01253854356093,0734,627NNW0002011423,6073,950TOTAL 61 1751,151 2,9556,29430,18340,819 GEOGRAPHY AND DEMOGRAPHY 2.1-13WATTS BARWBNP-105Table 2.1-8 Watts B a r 2000 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-9 Watts B a r 2010 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-10 Watts B a r 2020 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-11 Watts B a r 2030 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-12 Watts B a r 2040 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-13 Watts B a r 2050 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 2.1-14 Watts B a r 2060 Population DistributionWithin 5 0 Miles Of The S ite(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-105Table 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 000002,1252,125NNW000001,0321,032TOTAL945 2809352601,6056,08410,109 GEOGRAPHY AND DEMOGRAPHY 2.1-21WATTS BARWBNP-105Table 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 000002,1802,180NNW000001,0591,059TOTAL969 2879612671,6466,24110,371 2.1-22GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 000002,4012,401NNW000001,1661,166TOTAL1,067 3161,0562941,8136,87411,420 GEOGRAPHY AND DEMOGRAPHY 2.1-23WATTS BARWBNP-105Table 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 000002,6452,645NNW000001,2851,285TOTAL1,177 3491,1643231,9987,57412,585 2.1-24GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 000002,7432,743NNW000001,3321,332TOTAL1,219 3611,2063362,0727,85313,047 GEOGRAPHY AND DEMOGRAPHY 2.1-25WATTS BARWBNP-105Table 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 000002,9312,931NNW000001,4231,423TOTAL1,303 3861,2893592,2148,39113,942 2.1-26GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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 000003,1223,122NNW000001,5161,516TOTAL1,389 4121,3733822,3598,93914,854 2.1-27GEOGRAPHY AND DEMOGRAPHY WATTS BARWBNP-105Table 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-105THIS PAGE INTENTIONALLY LEFT BLANK GEOGRAPHY AND DEMOGRAPHY2.1-29WATTS BARWBNP-105Figure 2.1-1 Location of Watts Bar Nuclear Plant Site

2.1-30GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-105Figure 2.1-2 Watts Bar Site Location 0-50 Miles GEOGRAPHY AND DEMOGRAPHY2.1-31WATTS BARWBNP-105Figure 2.1-3 Watts Bar Site Location 0-10 Miles 2.1-32GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-105Figure 2.1-4a Watts Bar Topographic Map & Reservation Boundary GEOGRAPHY AND DEMOGRAPHY2.1-33WATTS BARWBNP-105Figure 2.1-4b Site Boundary / Exclusion Area Boundary 2.1-34GEOGRAPHY AND DEMOGRAPHYWATTS BARWBNP-105Figure 2.1-5 Main Plant General Plan GEOGRAPHY AND DEMOGRAPHY2.1-35WATTS BAR WBNP-105Figure 2.1-6 Deleted by Amendment 63 2.1-36GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-7 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-37WATTS BAR WBNP-105Figure 2.1-8 Deleted by Amendment 63 2.1-38GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-9 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-39WATTS BAR WBNP-105Figure 2.1-10 Deleted by Amendment 63 2.1-40GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-11 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-41WATTS BAR WBNP-105Figure 2.1-12 Deleted by Amendment 63 2.1-42GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-13 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-43WATTS BAR WBNP-105Figure 2.1-14 Deleted by Amendment 63 2.1-44GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-15 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-45WATTS BAR WBNP-105Figure 2.1-16 Deleted by Amendment 63 2.1-46GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-17 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-47WATTS BAR WBNP-105Figure 2.1-18 Deleted by Amendment 63 2.1-48GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-19 Deleted by Amendment 63 GEOGRAPHY AND DEMOGRAPHY2.1-49WATTS BAR WBNP-105Figure 2.1-20 2010 Cumulative Population Within 30 Miles/ 500 persons per Square Mile 2010 Cumulative Population Within 30 Miles/500 persons Square Mile 10 100 1000 10000 100000 1000000 1000000015102030 Miles Population 500/Sq 2010WATTS BAR NUCLEAR PLANT FINAL SAFETY WITHIN 30 MILES OF THE SITEANALYSIS REPORTFIGURE 2.1-202010 CUMULATIVE POPULATION 2.1-50GEOGRAPHY AND DEMOGRAPHYWATTS BAR WBNP-105Figure 2.1-21 2060 Cumulative Population Within 30 Miles/ 1000 persons per Square Mile 2060 Cumulative Population Within 30 Miles/1000 persons Square Mile 10 100 1000 10000 100000 1000000 1000000015102030 Miles Population 1000/Sq 2060WATTS BAR NUCLEAR PLANT FINAL SAFETY ANALYSIS REPORT2060 CUMULATIVE POPULATION WITHIN 30 MILES OF THE SITEFIGURE 2.1-21 NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-1WATTS BARWBNP-1052.2 NEARBY INDUSTRIAL, TRANSPOR TATION, AND MILITARY FACILITIES2.2.1 Location and RouteMaps showing the area are found on Figures 2.1-2 and 2.1-3. The only significant nearby industrial facility is the Watts Bar Steam Plant.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 Steam Plant and 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 Descriptions 2.2.2.1 Description of FacilitiesThe Watts Bar Steam Plant is a coal-fired electric generating facility with a total capacity of 240,000 kW which during normal operation has about 100 employees. The plant is not currently operating, but could be reactivated in the future.The 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. If Watts Bar Steam Plant were reactivated, the spur would also be used for the delivery of heavy components and coal to it.

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

2.2-2NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES WATTS BARWBNP-105Knoxville). 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.

2.2.2.5 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.

NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-3WATTS BARWBNP-105The 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, the 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-105Table 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-105Table 2.2-2 Deleted by Amendment 94 2.2-6NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES WATTS BARWBNP-105 THIS PAGE IS INTENTIONALLY LEFT BLANK NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-7WATTS BAR WBNP-105Security-Related Information - Withheld Under 10CFR2.390Figure 2.2-1 Airways in the Area of the Plant

NEARBY INDUSTRIAL, TRANSPORTATION, AND MILITARY FACILITIES 2.2-8WATTS BAR WBNP-105Security-Related Information - Withheld Under 10CFR2.390Figure 2.2-2 Military Airways in the Area of the Plant METEOROLOGY 2.3-1WATTS BARWBNP-1052.3 METEOROLOGY 2.3.1 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-105largest 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 (mi 2)t = mean number of tornadoes per year.A = area of one-degree latitude, one-degree longitude square = 3887 mi 2 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).P zt A-----=(1)R 1 P----=(2)Z METEOROLOGY 2.3-3WATTS BARWBNP-105For z = 2.8209 mi 2 (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 km 2 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 km 2 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-105through 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-105The 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 requirements have been recently updated by NRC. As defined in Regulatory Guide-1.76 (revision 1), the site is located on Region I for Design Basis Tornado

considerations [ii]. The design conditions assumed for the Watts Bar Nuclear Plant reactor shield building (and other safety-related structures) are the following: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. (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)(1)184 mph=Rotational Speed (2)46 mph=Translational Speed(3)230 mph=Maximum Wind Speed(4)1.2 psi=

Pressure Drop(5)0.5 psi/sec=Rate of Pressure Drop (1.2 psi/2.4 sec is assumed) 2.3-6METEOROLOGY WATTS BARWBNP-1052.3.2 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 Mete orological 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 76.9-79.6°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 METEOROLOGY 2.3-7WATTS BARWBNP-105inches 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 season. 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.

2.3-8METEOROLOGY WATTS BARWBNP-105Wind 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.Low-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]

METEOROLOGY 2.3-9WATTS BARWBNP-105Distributions 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 Fac ilities 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 directions 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 Meteorol ogical Conditions for D esign 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 2.3-10METEOROLOGY WATTS BARWBNP-1052meters (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 meters 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]

METEOROLOGY 2.3-11WATTS BARWBNP-105Data Acquisition SystemThe previous data collection system, which included a NOVA minicomputer, was replaced by a new system on March 2, 1989. This data acquisition system is located at the EDS and consists of meteorological sensors and a computer. 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.System Accuracies The 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 are measured at the following rates: horizontal wind direction and wind speed, every five seconds (720 per hour); temperature and dewpoint, every minute (60 per hour); and rainfall, every hour (one per hour). Prior to February 1, 1975, only one reading of temperature and dewpoint was made each hour.

Software data processing routines within the computer accumulate output and perform data calculations to generate 15-minute and hourly average of wind speed and temperature, 15-minute and hourly vector wind speed and direction, hourly average of dewpoint, hourly horizontal wind direction sigmas, and hourly total precipitation. 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.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.

2.3-12METEOROLOGY WATTS BARWBNP-105Selected 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 availa ble 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. Most 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 METEOROLOGY 2.3-13WATTS BARWBNP-105centers 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 fo r 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. 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 through 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.The upvalley-downvalley primary wind pattern at 46 meters exists for all seven stability classes. The 10-meter wind level also shows upvalley-downval ley 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 2.3-14METEOROLOGY WATTS BARWBNP-105period, 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.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 Estimates 2.3.4.1 ObjectiveRevised estimates of atmospheric diffusion expressed as dispersion factors (X/Q) have been calculated for accident releases considered as ground-level releases from the Watts Bar Nuclear Plant for specified time intervals and distances. The revised X/Q values are based on an updated onsite meteorological data base for 1974 through 1993 and RG 1.145 calculation methodology.

[41] The original FSAR calculations were based on data collected at the Watts Bar onsite meteorological facility for the period July 1, 1973 through June 30, 1975 and R.G. 1.4 methodology.

[42] 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 revised 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/m 3)y = 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) y 800 m + 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 (m 2).U 10 METEOROLOGY 2.3-15WATTS BARWBNP-105Atmospheric 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 m

2. 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 releases 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 XQ 1 U 10 y z A 2+------------------------------------------------

=(1)XQ 1 U 10 3 y z----------------------------------

=(2)XQ 1 U 10 y z-------------------------

-=(3) 2.3-16METEOROLOGY WATTS BARWBNP-105average 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 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 and Table 2.3.61a based on the 20-year data set of 1974-1993. The maximum 0.5th and 5th percentile X/Q values are from the 15-year data set and are 6.040 x 10

-4 sec/m 3 and 5.323 x 10

-4 sec/m 3, respectively. The maximum 0.5th and 5th percentile X/Q values from the 20-year data sets (6.070

x 10-4 sec/m 3 and 5.263 x 10

-4 sec m 3, respectively) are essentially unchanged from the 15-year 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 the 15-year data set of 1974-1988 and Table 2.3-62a based on the 20-year set of 1974-1993. Only minor differences exist between the two sets of values. For 8-hour, 16-hour, 3-day, and 26-day averaging periods, the X/Qs 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) and Table 2.3-63a (1974-1993).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) and Table 2.3-65 (1974-1993). The maximum sector set corresponds to the southeast plume sector. The respective values are:

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-105In 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 2.3-66 and 1/U values in Table 2.3-67. These values were based on the 15-year data set for 1974-1988. Table 2.3-66a and 2.3-67a present the same information based on the 20-year data set for 1974-1993. The original FSAR values are presented with the updated bases for comparison.

2.3.5 Long-Term (Routine)

Diffusion EstimatesThe X/Qs and 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 Table 2.3-75 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 2.3-75 contain the X/Q's and D/Q's for 10 distances within each of the 16 sector locations out to 50 miles.The long-term representativeness of the 20-year onsite meteorological data base is discussed in Sections 2.3.3.3 and 2.3.4.2.

Period1974-19881974-19938-hour6.765 x 10

-56.677 x 10

-516-hour4.629 x 10

-54.592 x 10 day2.032 x 10

-52.039 x 10

-526-day6.230 x 10

-66.353 x 10

-6 2.3-18METEOROLOGY WATTS BARWBNP-105REFERENCES (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 Cl imatology 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.

METEOROLOGY 2.3-19WATTS BARWBNP-105 (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.

2.3-20METEOROLOGY WATTS BARWBNP-105 (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. NuclearRegulatory 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.

METEOROLOGY 2.3-21WATTS BARWBNP-105 (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.

2.3-22METEOROLOGY WATTS BARWBNP-105Table 2.3-1 Thunderstorm Day Frequencies Chattanooga 11 National Oceanic and Atmosp heric Administration, 2009 Local Climatological Data Annual Summary with Comparative Data; Chattanooga, TN (KCHA) -- period of record 62 years.Knoxville 22 National Oceanic and Atmosp heric 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 0.7 0.8 1.4Winter3.92.9March April May 3.6 4.8 7.1 3.2 4.5 6.9Spring15.514.6 June July August 9.011.1 8.8 8.5 9.9 6.9Summer28.825.3SeptemberOctober November 4.0 1.4 1.5 3.0 1.3 1.1Autumn6.95.4Annual55.148.2 METEOROLOGY 2.3-23WATTS BARWBNP-105Table 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.b July 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.

b April 20, 199676 mph(3 second gust)76 mphMaximum wind speed (3-second gust equivalent) = 88 mph on July 15, 1961.

2.3-24METEOROLOGY WATTS BARWBNP-105Watts 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)60 70 80 85 90 95100 105 50 58 66 70 75 78 80 85 72 62 55 51 48 46 45 42 42 49 56 59 62 66 69 73 40 46 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)

METEOROLOGY 2.3-25WATTS BARWBNP-105Table 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 potions 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 Meigs Roane 122 103 91 275 163 82 144 2.03 1.72 1.52 4.58 2.72 1.36 2.40TOTAL EVENTS98016.33 2.3-26METEOROLOGY WATTS BARWBNP-105 Large 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 Roane 53 48 48 130 74 33 33 0.88 0.80 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)

METEOROLOGY 2.3-27WATTS BARWBNP-105a.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 Coopertive Observer Data a(Data in °F)Daily Average bAverageDaily Maximum bAverageDaily Minimum bExtremeMaximum c Extreme Minimum cMonthDaytonDecaturDaytonDecaturDaytonDecaturDaytonDecaturDaytonDecaturJan36.240.045.950.626.529.47576-15 f-9Feb40.541.651.653.029.330.37978-4-20 gMar48.850.560.863.036.738.1859132 Apr57.458.570.372.044.445.092942220 May65.467.177.380.853.553.594993030 Jun73.374.684.787.261.862.01001034040 Jul76.977.687.789.866.165.3107 d 108 e4948Aug76.076.986.989.365.064.51041074949 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 Annual57.559.068.771.446.346.5107 d 108 e-15 f-20 g 2.3-28METEOROLOGY WATTS BARWBNP-105a.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 Service a(Data in °F)Month Normal Dry Bulb b Mean Daily Maximum c Mean Daily Minimum cExtremeMaximum dExtreme Minimum dJanuary39.449.931.1 78 -10 eFebruary43.452.832.5 79 1March51.462.340.0 88 8 April59.671.747.8 93 25 May67.780.056.7 99 34 June75.486.364.4 104 41 July79.689.669.0 106 f 51August78.589.068.2 105 50 September72.182.661.2 102 36 October60.473.049.2 94 22 November50.360.638.8 84 4 December42.451.832.8 78 -2 Annual60.070.849.3 106 f -10 e METEOROLOGY 2.3-29WATTS BARWBNP-105*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 0.01 Inch or More aAverage b ExtremeMaximum cExtremeMinimum c24-hourMaximum cMonthWBN*Dam*WBNDamWBNDamWBNDamWBNDamJan 11114.395.309.8911.670.800.933.315.31 dFeb 10104.125.3412.289.790.370.743.563.50 Mar 11114.505.6212.33 e11.751.431.323.495.00Apr 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 773.453.698.5514.78 f0.460.454.77 g4.50Oct 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 2.3-30METEOROLOGY WATTS BARWBNP-105a.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)MonthAverage a,bMaximum Monthly a,c Highest Daily a,cJanuary1.89.77.2February1.613.3 d 7.5March0.88.0 8.0 eApril0.12.72.7May000 June000 July000 August000 September000 October000 NovemberTraceTraceTrace December0.11.11.0 Annual4.4 METEOROLOGY 2.3-31WATTS BARWBNP-105

• 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 ye ars 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)

Normal cMaximum Monthly dMaximum 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 December0.10.79.112.28.98.9Annual4.89.920.023.3 e20.018.2 2.3-32METEOROLOGY WATTS BARWBNP-1051.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) 1 Original Date (1931/41-1974) 2Month Hour0100 Hour0700 Hour1300 Hour1900 Hour0100 Hour0700 Hour1300 Hour1900January7981636680826368February7782585878805760 March7682555377815356 April7885494978814952 May8789555886855156 June8790576088855460 July8790576289895764 August8892586490915766 September8992596689905566 October8891556888895267 November8386596882845565 December8083626882836270 Annual8387576284855563 METEOROLOGY 2.3-33WATTS BARWBNP-105*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 2.3-34METEOROLOGY WATTS BARWBNP-105*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/m 3)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 METEOROLOGY 2.3-35WATTS BARWBNP-105*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 *MonthAverage Average M ax imum Average M in imum Extreme Max imum Extreme Min imum 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 2.3-36METEOROLOGY WATTS BARWBNP-105*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 (T d) using equations from El Paso NWS website (http://www.srh.noaa.gov/epz/?n=wxcalc).units:RH = percent (%)

T, T d = degrees celsius (°C) e, e s = 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 Minimum Extreme 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 Annual71.3 RH e e s-----*100 where: e6.11* 10 7.5*T d237.6 T d+-------------------------

-== e s6.11* 10 7.5*T d237.6 T+-----------------------=

METEOROLOGY 2.3-37WATTS BARWBNP-105*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/m 3)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 2.3-38METEOROLOGY WATTS BARWBNP-105 *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/m 3)T = degrees kelvin (°K)

P w = millibars (mb)Table 2.3-11 Absolute HumidityWatts Bar Nuclear Plant Meteorological Facility(Sheet 2 of 2)(Data in gm/m 3)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 Annual10.1 AH = 216.68

• Pw T--------

METEOROLOGY 2.3-39WATTS BARWBNP-105*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.b Oak R.cEst. from Hardwick d 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 2.3-40METEOROLOGY WATTS BARWBNP-105TOTAL 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, 1993 WIND DIRECTIONWIND SPEED(MPH)CALM0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.4 18.5-24.4>=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 METEOROLOGY2.3-41WATTS BAR WBNP-105Table 2.3-14 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantJan 1, 74 - Dec 31, 93Wind Direction( 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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW 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 1.284 2.381 3.460 2.622 1.061 0.526 0.642 1.313 2.456 3.261 1.787 0.981 0.721 0.549 0.661 0.71024.413 1.176 2.260 2.490 1.257 0.488 0.279 0.334 0.671 1.791 4.368 2.080 0.747 0.428 0.416 0.486 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 Calm 95.92895 Meteorological 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

METEOROLOGY2.3-42WATTS BAR WBNP-105Table 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 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32>32 TOTAL 860 360 241 159112 74 75 36 29 25 15 14 5 5 4 4 3 3 4 1 1 1 0 1 0 0 0 0 0 0 0 0 2032 887 465 298 169 160 93 78 42 54 30 19 16 13 14 8 9 6 8 6 5 7 0 5 0 1 0 0 0 0 0 0 3 2396 906 388 253 146 89 70 39 20 14 9 3 4 4 0 3 1 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1952 938 428 220 122 64 37 20 11 12 4 1 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1861487201 71 30 18 7 2 0 0

0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0817 134 44 9 1 0 0 0 0 0

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 188 208 77 27 11 5 3 0 0 0

0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 334 462 196 77 30 21 4 5 2 2

0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 801 1085 496 275 174 102 50 29 18 14 13 11 3 2 2 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 2277 1242 697 531 417 289 269 187 139 123 99 79 62 49 42 21 20 22 19 10 2 6 6 3 3 6 3 3 0 4 0 2 7 4362 1030 392 219 130 46 38 26 17 8 5 1 2 3 3 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1923 782 328 132 67 42 20 20 5 6

4 0 2 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 01411 879 353 182114 61 20 34 9 9

6 3 2 1 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1676 783 328 179 127 68 34 18 17 8 12 2 2 2 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1582 988 481 255 162 99 63 56 22 12 11 2 4 0 1 2 1 1 2 0 1 0 1 0 0 2 1 0 0 0 0 0 0 2167 802 373 212114 81 52 25 30 13 11 7 6 3 6 2 2 0 1 0 3 0 1 1 1 0 0 1 0 0 0 0 01747 344 186113 72 61 45 29 23 20 9 4 5 6 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 919 12817 5793 3294 2045 1318 879 643 391 324 238 151 124 88 78 45 39 37 35 20 13 14 10 9 6 10 4 4 0 4 0 2 10 28445 28445 15628 9835 6541 4496 3178 2299 1656 1265 941 703 552 428 340 262 217 178 141 106 86 73 59 49 40 34 24 20 16 16 12 12 10 100.00 54.94 34.58 23.00 15.8111.17 8.08 5.82 4.45 3.31 2.47 1.94 1.50 1.20 0.92 0.76 0.63 0.50 0.37 0.30 0.26 0.21 0.17 0.14 0.12 0.08 0.07 0.06 0.06 0.04 0.04 0.04 METEOROLOGY2.3-43WATTS BAR WBNP-105Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At The 9.72 Meter Level MaximumPersistence (Hours)254026161651218254421181919272815 50.0%80.0%90.0%99.0%

99.9% 3 6 8 16 22 3 6 9 20 37 3 5 6 11 18 2 4 5 10 15 2 3 4 7 16 2 3 3 4 5 2 3 4 7 12 2 3 4 8 18 3 4 6 11 17 4 8 11 21 34 2 4 5 10 18 2 4 5 10 16 2 4 5 10 16 3 4 6 11 16 3 5 6 11 26 3 5 6 15 25 3 6 8 13 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 METEOROLOGY2.3-44WATTS BAR WBNP-105Table 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 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29772348227168 122 77 54 47 27 20 20 11 18 10 5 4 2 3 0 1

2 1 0 0 0 1 1 01014 503 360 182 165 128 73 59 46 36 36 23 15 23 16 7 9 8 7 5

6 3 1 3 0 2 0 11137539403275 169122 70 57 35 18 31 14 10 10 4 2 3 1 1 2

1 0 0 0 2 2 0 0822353200 98 59 31 18 7 8 4 1 1 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0323102 45 12 4 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0145 32 16 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 174 60 19 11 7 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0414134 65 28 10 6 5 1 2 1 0 1 0 0 0 0 1 0 0 0

0 0 0 0 0 0 0 01015438212124 79 34 21 9 11 8 3 2 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 01244735577391 285249175148124 99 81 60 64 54 31 29 31 16 17 5 14 9 5 5 3 2 5 71088503344191 130 77 58 43 16 13 10 10 6 3 0 1 1 1 3 2

1 2 0 2 0 1 0 0 489 148 87 45 26 13 8 8 1 3 2 2 1 2 0 0 0 0 1 0

0 0 0 0 0 0 0 0370123 82 47 33 13 14 10 5 1 3 3 2 1 2 0 0 0 0 0

0 0 0 0 0 0 0 0367171124 64 55 31 14 14 6 7 3 0 2 1 2 0 0 1 0 0

0 0 0 0 0 0 0 0412205106 77 50 37 17 21 14 6 6 6 3 5 1 2 1 0 1 0

1 0 0 0 0 0 1 0491247120 79 49 31 31 17 8 11 10 2 4 1 2 1 1 1 0 1

0 0 0 0 0 0 0 0 245 128 73 38 40 18 11 8 1 5 1 0 1 0 0 0 0 0 0 0

0 0 1 0 0 0 0 010522476930601834 1283870572 451304232 207135126110 63 46 49 31 30 16 25 15 7 10 5 8 7 8248081428695176457 462333402470 189814471143911704569 443333270 224175144114 98 73 58 51 41 36 28 21100.0057.5938.3626.03 18.6413.46 9.96 7.65 5.83 4.61 3.67 2.84 2.29 1.79 1.34 1.09 0.90 0.71 0.58 0.46 0.40 0.29 0.23 0.21 0.17 0.150.11 0.08 METEOROLOGY2.3-45WATTS BAR WBNP-105 Meteorological Facility: Watts Bar Nuclear PlantWind Speed And Direction Measured At The 46.36 Meter Level 30 31 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 0 274 0 0 0 0668 0 0 0 01956 0 2 0 84475 0 0 1 02507 0 0 0 0 836 0 0 0 0709 0 0 0 0862 0 0 0 0972 0 0 0 01107 0 0 0 0 570 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 8 16 27 3 6 9 20 29 3 5 7 14 26 2 4 5 9 12 2 3 4 7 8 2 3 4 5 5 2 3 4 8 9 2 3 4 8 18 2 4 5 10 13 4 8 12 23 34 3 5 7 13 25 2 4 5 11 20 2 4 6 13 16 3 5 6 12 19 3 5 7 15 28 3 5 7 13 19 3 5 6 11 24Table 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 METEOROLOGY2.3-46WATTS BAR WBNP-105Table 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 Calm98.1354 Meteorological 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 METEOROLOGY2.3-47WATTS BAR WBNP-105Table 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>=24.5Total NNNE NE ENE EESE SESSE S SSW SWWSW W WNW NWNNW 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 0.9051.2201.07416.533 3.400 3.473 1.745 0.226 0.024 0.000 0.016 0.024 0.428 4.0382.811 1.373 1.615 2.367 2.609 2.42326.5730.6780.5570.0570.000 0.0000.0000.000 0.0080.1211.3810.7430.5170.759 0.8800.9530.695 7.350 0.000 0.000 0.000 0.000 0.000 0.000 0.008 0.000 0.065 0.291 0.105 0.178 0.218 0.057 0.065 0.000 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 Calm97.9165 Meteorological 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 METEOROLOGY2.3-48WATTS BAR WBNP-105Table 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>=24.5Total NNNE NE ENE EESE SESSE SSSW SWWSW W WNW NWNNW SUBTOTAL0.1200.1280.1700.2580.1180.0350.049 0.0690.1160.166 0.1380.1520.1470.1170.1800.123 2.085 0.693 0.745 0.896 1.536 0.858 0.331 0.474 0.519 0.625 0.806 0.866 1.084 1.302 1.137 1.724 1.03114.6281.7011.8072.4773.584 1.4910.3610.497 0.8511.6792.492 1.8821.9351.6111.1891.8441.41526.816 1.807 2.492 2.078 1.250 0.467 0.098 0.196 0.339 0.994 2.989 1.558 0.986 0.858 0.715 1.024 1.34019.190 1.634 2.499 1.250 0.354 0.196 0.045 0.038 0.136 0.474 2.612 1.001 0.647 0.768 0.949 1.287 1.23515.1252.3192.8680.8960.128 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 Calm98.0277 Meteorological 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 METEOROLOGY2.3-49WATTS BAR WBNP-105Table 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>=24.5Total NNNE NE ENE EESE SESSE S SSW SWWSW W WNW NWNNWSUBTOTAL0.0730.1390.2030.137 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 Calm 98.3127 Meteorological 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 METEOROLOGY2.3-50WATTS BAR WBNP-105Table 2.3-21 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantMarch (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>=24.5Total NNNE NE ENE E ESE SE SSE SSSW SWWSW W WNW NWNNWSUBTOTAL0.0970.1030.1420.2230.1120.0420.059 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 1.6031.19025.546 1.659 1.806 1.421 1.0290.511 0.154 0.280 0.553 1.316 3.402 1.624 0.679 0.693 0.651 1.036 1.00817.8241.4841.7291.0010.504 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 Calm96.0260 Meteorological 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 METEOROLOGY2.3-51WATTS BAR WBNP-105Table 2.3-22 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantMarch (77-93)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>=24.5Total NNNE NE ENE EESE SESSE SSSW SWWSW W WNW NWNNWSUBTOTAL0.1060.1720.2640.157 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 0.0080.0080.233 9.26910.99610.556 4.958 2.370 1.253 1.445 3.009 6.34917.423 10.173 3.869 3.5154.110 5.213 5.491100.000Total Hours Of Valid Wind Observations12038Total Hours Of Observations12648Recoverability PercentageTotal Hours Calm95.2 181 Meteorological 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 METEOROLOGY2.3-52WATTS BAR WBNP-105Table 2.3-23 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantApril (74-93)Wind DirectionWind Speed (MPH)

Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total NNNE NE ENE E ESE SE SSE S SSW SW WSW WWNW NW NNW 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 1.7151.07818.034 0.984 1.129 1.657 2.468 1.563 0.630 0.601 1.433 1.816 2.888 2.258 1.976 1.773 1.201 1.643 1.15825.1771.2811.7881.1000.970 0.7670.3550.391 0.7961.5923.495 1.534 0.7890.7450.709 0.8320.87618.020 1.230 1.621 1.013 0.528 0.224 0.022 0.145 0.275 0.905 3.597 0.890 0.420 0.644 0.637 0.825 0.86113.8371.4762.1280.7380.232 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 Calm96.0271 Meteorological 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 METEOROLOGY2.3-53WATTS BAR WBNP-105Table 2.3-24 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantApril (77-93)WindDirectionWind Speed (MPH)Wind Calm0.6-1.41.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total NNNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NWNNW 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 Calm93.7194 Meteorological 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 METEOROLOGY2.3-54WATTS BAR WBNP-105Table 2.3-25 Joint Percentage Frequencies Of Wind Speed By Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantMay (74-93)Wind DirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL0.1090.0990.1430.225 0.1830.0810.1170.1780.2560.327 0.281 0.2560.2540.1650.2110.1493.035 0.618 0.426 0.633 0.988 1.329 0.682 0.931 1.237 1.315 1.578 1.940 2.409 2.459 1.578 1.940 1.22221.2851.2371.2651.7982.836 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 0.0140.0140.0210.0140.0360.910 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.007 0.000 0.000 0.000 0.000 0.000 0.000 0.0070.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.000 0.0000.0000.000 0.0000.0000.000 6.121 6.773 6.347 6.429 4.320 1.808 2.896 4.257 8.91217.482 8.234 5.529 5.954 4.721 5.499 4.718100.000Total Hours Of Valid Wind Observations14071Total Hours Of Observations14880Recoverability PercentageTotal Hours Calm94.6427 Meteorological 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 METEOROLOGY2.3-55WATTS BAR WBNP-105Table 2.3-26 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantMay (77-93)Wind DirectionWind Speed (MPH)Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW WWNW NW NNWSUBTOTAL0.1140.2200.3240.2660.1190.0680.080 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 0.2120.2360.2200.2680.1875.841 0.016 0.000 0.000 0.000 0.000 0.000 0.000 0.016 0.065 0.456 0.106 0.033 0.000 0.008 0.000 0.016 0.7160.0000.0000.0000.000 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 Calm97.2305 Meteorological 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 METEOROLOGY2.3-56WATTS BAR WBNP-105Table 2.3-27 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantJune (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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.0780.0770.0970.185 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 0.5260.77821.627 1.174 1.477 0.627 0.490 0.173 0.050 0.043 0.245 1.297 4.005 1.001 0.202 0.382 0.612 0.497 0.57612.852 0.994 1.830 0.483 0.137 0.014 0.029 0.000 0.086 0.7133.112 0.317 0.072 0.195 0.418 0.360 0.439 9.2000.0500.1660.0000.007 0.0000.0070.007 0.0000.0290.158 0.007 0.0000.0140.0070.0140.0290.497 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 0.0000.0000.0000.0000.000 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 Calm96.4 404 Meteorological 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 METEOROLOGY2.3-57WATTS BAR WBNP-105Table 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>=24.5Total NNNE NE ENE E ESE SE SSE S SSW SWWSW W WNW NWNNWSUBTOTAL0.1070.1740.2310.195 0.1090.0540.068 0.1330.2250.254 0.149 0.0910.0660.065 0.0500.0582.030 0.792 0.944 1.340 1.078 0.784 0.371 0.472 0.716 0.927 0.767 0.725 0.463 0.463 0.573 0.421 0.44711.2811.1632.2242.8812.477 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 Calm97.0241 Meteorological 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 METEOROLOGY2.3-58WATTS BAR WBNP-105Table 2.3-29 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantJuly (74-93)Wind DirectionWind Speed (MPH)

Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL0.0620.0580.0680.1260.1180.0600.104 0.1690.2460.310 0.268 0.2230.1820.158 0.1610.0952.409 0.414 0.387 0.373 0.656 1.049 0.518 0.870 1.415 1.664 1.885 2.168 2.575 2.154 1.899 1.892 1.09121.0081.0561.0011.2432.347 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 0.4070.54511.557 0.373 1.070 0.366 0.138 0.055 0.000 0.035 0.124 0.504 1.685 0.249 0.069 0.200 0.166 0.2690.311 5.6130.0000.0210.0140.000 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 Calm 97.3349 Meteorological 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 METEOROLOGY2.3-59WATTS BAR WBNP-105Table 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>=24.5Total NNNE NE ENE E ESE SE SSE SSSW SWWSW W WNW NWNNW 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 Calm95.8182 Meteorological 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 METEOROLOGY2.3-60WATTS BAR WBNP-105Table 2.3-31 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantAugust (74-93)Wind DirectionWind Speed(MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.1320.1010.1530.278 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 2.8081.35923.170 1.428 1.241 1.955 3.494 1.823 0.776 1.165 2.392 3.792 4.638 3.279 2.371 1.712 1.539 2.073 1.63635.316 1.934 1.907 1.913 2.045 0.991 0.354 0.506 1.026 2.940 4.368 1.220 0.395 0.333 0.444 0.451 0.63821.4641.1302.0040.8870.499 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 0.0970.3815.893 0.014 0.035 0.007 0.000 0.000 0.000 0.000 0.000 0.007 0.021 0.000 0.000 0.000 0.000 0.007 0.014 0.104 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 0.0000.0000.0000.0000.000 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 Calm96.9 531 Meteorological 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 METEOROLOGY2.3-61WATTS BAR WBNP-105Table 2.3-32 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class , Watts Bar Nuclear PlantAugust (77-93)Wind Direction 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>=24.5Total NNNE NE ENE E ESE SE SSE SSSW SWWSW W WNW NWNNWSUBTOTAL 0.134 0.241 0.346 0.275 0.140 0.077 0.086 0.153 0.277 0.356 0.191 0.088 0.069 0.066 0.086 0.082 2.6640.7371.1311.4741.332 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 0.8880.82931.432 1.424 2.161 2.622 2.237 0.880 0.578 0.570 1.081 2.957 5.831 2.212 0.670 0.302 0.352 0.352 0.66224.8891.2062.1111.6590.888 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 0.2850.58612.465 0.142 0.109 0.067 0.050 0.008 0.008 0.008 0.017 0.042 0.3520.117 0.025 0.008 0.025 0.084 0.075 1.1390.0000.0080.0000.000 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 Calm94.4318 Meteorological 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 METEOROLOGY2.3-62WATTS BAR WBNP-105Table 2.3-33 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantSeptember (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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 0.0000.0000.282 0.000 0.000 0.007 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 0.0070.0000.0000.0000.000 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 Calm96.0528 Meteorological 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 METEOROLOGY2.3-63WATTS BAR WBNP-105Table 2.3-34 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantSeptember (77-93)Wind DirectionWind Speed(MPH) Calm0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.1290.2560.3880.299 0.1480.0890.094 0.1690.2770.336 0.169 0.1040.0720.074 0.0800.0852.770 0.604 0.968 1.545 1.438 1.128 0.613 0.586 0.844 1.083 1.243 0.790 0.488 0.462 0.417 0.444 0.50613.1591.2612.7444.0672.895 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 Calm92.0312 Meteorological 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 METEOROLOGY2.3-64WATTS BAR WBNP-105Table 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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 Calm96.8737 Meteorological 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 METEOROLOGY2.3-65WATTS BAR WBNP-105Table 2.3-36 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantOctober (77-93)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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 Calm97.1445 Meteorological 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 METEOROLOGY2.3-66WATTS BAR WBNP-105Table 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>=24.5Total N NNE NEENE E ESE SE SSE S SSW SW WSW WWNW NW NNWSUBTOTAL 0.190 0.241 0.254 0.329 0.190 0.058 0.0710.114 0.228 0.289 0.242 0.305 0.368 0.359 0.425 0.278 3.9401.0411.0910.9691.292 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 1.0411.47113.536 0.151 0.072 0.007 0.000 0.000 0.000 0.029 0.043 0.230 0.646 0.043 0.065 0.036 0.072 0.086 0.079 1.5570.0000.0000.0000.000 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 Calm96.8549 Meteorological 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 METEOROLOGY2.3-67WATTS BAR WBNP-105Table 2.3-38 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantNovember (77-93) 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 >=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Subtotal0.1160.2010.3260.273 0.1330.0540.062 0.1040.1870.227 0.142 0.1020.0720.052 0.0730.0852.208 0.573 0.952 1.180 1.180 0.944 0.548 0.514 0.531 0.725 0.716 0.641 0.405 0.489 0.346 0.455 0.45510.6531.3062.3094.1213.253 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 Calm96.9262 Meteorological 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 METEOROLOGY2.3-68WATTS BAR WBNP-105Table 2.3-39 Joint Percentage Frequencies Of Wind SpeedBy Wind Direction Disregarding Stability Class, Watts Bar Nuclear PlantDecember (74-93)Wind Direction 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 Total NNNE NE ENE EESE SESSE SSSW SWWSW W WNW NWNNWSubtotal0.0980.1100.1440.187 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 0.1560.1701.794 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.035 0.121 0.000 0.000 0.000 0.007 0.000 0.000 0.1630.0000.0000.0000.000 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 Calm 94.8 303 Meteorological 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 METEOROLOGY2.3-69WATTS BAR WBNP-105Table 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>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSubtotal0.0740.1120.1580.127 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 Calm95.3163 Meteorological 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 2.3-70METEOROLOGYWATTS BARWBNP-105 THIS PAGE IS INTE NTIONALLY LEFT BLANK METEOROLOGY2.3-71WATTS BARWBNP-105All columns and calm total 100 percent of net valid observations, which represent 91 percent of total record. *Watts Bar temporary meteorological facility. Wind instrument s 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> 19Total N NNE NEENE E ESE SE SSE S SSW SW WSW WWNW NW NNWTotal 4.33 4.16 5.26 3.9 1.641.11 1.72 2.27 2.94 2.54 2.54 2.07 2.18 2.38 4.97 5.7149.72 1.072.11 4.12 2.07 0.5 0.45 0.5 0.81 2.83 4.69 3.08 1.08 1.26 1.21 1.74 2.1329.65 0.14 0.29 0.49 0.23 0.04 0.25 0.33 0.16 0.681.8 0.620.2 1.020.9 0.73 0.29 8.170.030.01 -0.01 -

- - -0.150.330.04 0.030.090.01 0.060.050.81--

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---5.576.57 9.876.212.18 1.812.553.24 6.69.366.28 3.384.55 4.5 7.58.1888.35Calm = 11.64

2.3-72METEOROLOGYWATTS BARWBNP-105*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 MARCH APRILMAY JUNEJULY AUGUST SEPTEMBEROCTOBER NOVEMBER 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 4.2 2.2 3.6 4.1 4.2 4.1 4.7 4.5 4.4 4.2 3.9 2.2 1.8 3.7 4.5 5.4 6.1 7.3 7.1 7.9 7.9 7.2 6.6 6.3 4.5 4.6 6.347.042.5 37.533.033.3 30.931.530.8 31.832.138.5 44.0 36.1 26.5 23.3 23.7 22.6 26.2 27.3 29.4 32.5 30.9 24.1 26.8 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 METEOROLOGY2.3-73WATTS BARWBNP-105Table 2.3-43 Deleted By Amendment 63 2.3-74METEOROLOGYWATTS BARWBNP-105Table 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. HOURS E0.0<DELTA-T<=1.5 F1.5<DELTA-T<=4.0 GDELT A-T>4.0 F AND GDELT A-T>1.5 STRENGTHDELTA-T>0.0 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 282027 993 709 483 340 224 151 94 72 64 42 19 10 7 4 1 0 0 0 0 0 0 0 0 0 0 01091728597 530513399 291220164 132 60 31 17 3 1 0 0 1 0 0 0 0 0 0 0 0 0527337302 286189159 103118 89 87 53 40 34 6 2 0 0 0 0 0 0 0 0 0 0 0 0 377 309 312 286 305 299 307 350 399 477 414 357 213 168 50 8 1 2

1 1 0 0 0 0 0 0 0 842 549 393 349 314 271 277 270 298 419 773 731 595 468 272 98 25 8 0 1 0 0 0 0 0 0 0 29 30 31 32>=32 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2*

2.3-75METEOROLOGYWATTS BARWBNP-105Meteorological 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. HOURS E0.0<DELTA-T<=1.5 F1.5<DELTA-T<=4.0 GDELT A-T>4.0 F AND GDELT A-T>1.5 STRENGTHDELTA-T>0.0 2.3-76METEOROLOGYWATTS BARWBNP-105Table 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)DirectionCalm0.6-1.4 1.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL 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 0.001 0.001 0.001 0.000 0.001 0.002 0.000 0.001 0.001 0.002 0.001 0.000 0.000 0.000 0.000 0.000 0.001 0.008 0.008 0.012 0.035 0.037 0.037 0.016 0.021 0.042 0.058 0.046 0.018 0.006 0.004 0.001 0.003 0.007 0.3500.0210.054 0.0880.0790.041 0.0160.0270.055 0.1390.2570.093 0.0160.0100.004 0.0050.0210.925 0.036 0.074 0.078 0.071 0.015 0.002 0.005 0.020 0.127 0.4760.118 0.017 0.014 0.007 0.010 0.035 1.1020.0600.141 0.0890.0320.005 0.0010.0010.013 0.1290.7430.102 0.0630.0640.033 0.0290.0571.563 0.003 0.004 0.000 0.000 0.000 0.000 0.001 0.002 0.0180.113 0.012 0.021 0.014 0.005 0.0060.011 0.2100.0000.000 0.0000.0000.000 0.0000.0000.000 0.0010.0050.000 0.0020.0010.000 0.0000.0000.008 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 0.0000.1290.285 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 Plant 1Stability Based On Delta-T Between 9.51 And 45.63 MetersWind Speed And Direction Measured At 9.72 Meter LevelMean Wind Speed = 7.21 Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-77WATTS BARWBNP-105Table 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) DirectionCalm0.6-1.41.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSubtotal 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 0.0000.0000.001 0.0000.0010.001 0.0020.0000.001 0.0010.0000.000 0.0000.0000.000 0.0000.0000.006 0.021 0.040 0.069 0.052 0.061 0.021 0.030 0.046 0.052 0.068 0.027 0.007 0.005 0.005 0.007 0.008 0.5190.0550.108 0.1230.1010.055 0.0240.0280.046 0.1280.2110.1140.0240.0100.005 0.0130.0271.072 0.0520.112 0.107 0.071 0.015 0.002 0.003 0.013 0.077 0.289 0.080 0.026 0.023 0.019 0.023 0.033 0.9440.0800.186 0.0860.0240.002 0.0010.0020.005 0.0540.2380.029 0.0230.0490.060 0.0630.0810.982 0.007 0.012 0.002 0.000 0.000 0.000 0.001 0.000 0.012 0.046 0.003 0.007 0.012 0.007 0.005 0.010 0.1230.0000.000 0.0000.0000.000 0.0000.0000.000 0.0020.0030.000 0.0000.0010.000 0.0010.0010.007 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.213 0.458 0.387 0.249 0.133 0.049 0.0640.111 0.326 0.855 0.252 0.085 0.099 0.0970.112 0.161 3.654Total 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 Calm166406 0Meteorological 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 2.3-78METEOROLOGYWATTS BARWBNP-105Table 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)DirectionCalm0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW Subtotal 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.001 0.002 0.001 0.004 0.002 0.001 0.001 0.001 0.001 0.001 0.001 0.001 0.000 0.000 0.000 0.015 0.041 0.099 0.1300.117 0.101 0.041 0.055 0.0850.116 0.099 0.049 0.021 0.0180.011 0.020 0.024 1.0270.0990.205 0.2340.1720.126 0.0400.0560.109 0.2450.4180.193 0.0570.0270.022 0.0400.0562.0970.117 0.221 0.163 0.082 0.022 0.004 0.008 0.0290.114 0.375 0.103 0.037 0.050 0.038 0.051 0.081 1.494 0.154 0.292 0.128 0.027 0.005 0.000 0.001 0.012 0.068 0.268 0.036 0.023 0.0600.113 0.144 0.129 1.4600.0080.019 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 0.0010.0000.009 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 0.0000.4190.837 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 Calm164406 0Meteorological 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 = 6.06 Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-79WATTS BARWBNP-105Table 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)Direction Calm 0.6-1.4 1.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.0050.006 0.0080.0100.007 0.0030.0050.0070.0110.0140.009 0.0060.0050.004 0.0040.0040.108 0.046 0.043 0.067 0.108 0.135 0.070 0.078 0.130 0.133 0.106 0.129 0.083 0.095 0.098 0.080 0.048 1.4500.5020.584 0.7270.8590.568 0.2450.3780.591 0.9911.2590.784 0.4980.4080.325 0.3410.3699.428 0.875 1.226 1.043 0.585 0.260 0.082 0.151 0.256 0.816 1.837 0.742 0.335 0.336 0.359 0.398 0.526 9.828 0.967 1.348 0.615 0.159 0.064 0.013 0.029 0.052 0.339 1.071 0.249 0.170 0.347 0.436 0.530 0.626 7.014 1.190 1.457 0.355 0.052 0.016 0.007 0.023 0.046 0.2941.119 0.151 0.121 0.409 0.571 0.748 0.903 7.4630.0460.063 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 0.0010.0000.042 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.0023.6314.728 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 = 5.37 Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-80METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.030 0.025 0.030 0.057 0.034 0.013 0.019 0.039 0.067 0.090 0.071 0.063 0.059 0.055 0.059 0.039 0.7480.1640.138 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 0.6640.512 10.478 0.599 0.422 0.266 0.290 0.083 0.028 0.0490.114 0.4781.117 0.300 0.178 0.222 0.214 0.256 0.308 4.9250.2740.213 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 = 3.28 Date Printed: 20-SEP-94Note: Totals And Subtotals Are Obtained From Unrounded Numbers METEOROLOGY2.3-81WATTS BARWBNP-105Table 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) Direction Calm 0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.0510.043 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 0.0020.0000.035 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.001 0.000 0.0020.000 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 Calm164406 2075Meteorological 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 = 1.53 Date Printed: 20-SEP-94NOTE: Totals And Subtotals Are Obtained From Unrounded Numbers 2.3-82METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 0.2640.1282.280 0.001 0.002 0.001 0.008 0.002 0.000 0.000 0.002 0.005 0.012 0.005 0.007 0.005 0.004 0.010 0.003 0.0680.0000.000 0.0000.0000.000 0.0000.0000.000 0.0020.0020.000 0.0000.0000.000 0.0010.0000.004 0.000 0.000 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.0010.0000.000 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 0.0000.0000.000 0.296 0.331 0.473 0.803 0.410 0.135 0.235 0.274 0.308 0.379 0.466 0.782 0.823 0.656 0.893 0.494 7.758Total 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 Calm164406 1448Meteorological 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 = 1.23 Date Printed: 20-SEP-94NOTE: Totals And Subtotals AreObtained From Unrounded Numbers METEOROLOGY2.3-83WATTS BARWBNP-105Table 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 0.0080.0004.166 0.000 0.006 0.519 1.072 0.944 0.982 0.123 0.007 0.000 3.654 0.000 0.015 1.027 2.097 1.494 1.460 0.184 0.009 0.000 6.2860.1081.4509.4289.828 7.0147.4630.751 0.0420.00136.0850.7486.20810.4784.925 2.4151.6580.280 0.0280.00026.739 1.262 7.598 5.688 0.6090.119 0.035 0.001 0.000 0.00015.3110.8814.5252.2800.068 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 Percentage 93.8Meteorological 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 2.3-84METEOROLOGYWATTS BARWBNP-105Table 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)Direction Calm0.6-1.41.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL0.0000.000 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 0.0010.0040.258 0.019 0.036 0.066 0.073 0.036 0.021 0.025 0.049 0.087 0.161 0.080 0.009 0.003 0.003 0.002 0.009 0.6800.0290.071 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 0.0190.0431.721 0.016 0.019 0.009 0.003 0.000 0.000 0.001 0.004 0.028 0.347 0.141 0.056 0.039 0.036 0.014 0.016 0.7280.0010.000 0.0000.0000.000 0.0000.0000.001 0.0050.0560.019 0.0240.0020.001 0.0020.0010.114 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.006 0.000 0.008 0.003 0.000 0.000 0.000 0.017 0.144 0.275 0.327 0.261 0.082 0.042 0.0470.114 0.307 1.564 0.736 0.165 0.085 0.066 0.041 0.088 4.343Total 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 Calm140205 2Meteorological 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 METEOROLOGY2.3-85WATTS BARWBNP-105Table 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) Direction Calm0.6-1.41.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE SSSW SW WSW W WNW NWNNW SUBTOTAL0.0000.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.0000.0000.000 0.001 0.001 0.001 0.000 0.002 0.001 0.001 0.000 0.001 0.000 0.001 0.000 0.000 0.000 0.000 0.000 0.000 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 Calm140205 1Meteorological 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 2.3-86METEOROLOGYWATTS BARWBNP-105Table 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)DirectionCalm 0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 0.0311.544 0.091 0.178 0.172 0.123 0.018 0.007 0.006 0.027 0.068 0.270 0.193 0.033 0.019 0.026 0.024 0.041 1.296 0.178 0.314 0.201 0.049 0.009 0.002 0.001 0.014 0.057 0.331 0.192 0.048 0.059 0.106 0.132 0.121 1.8140.0390.0700.016 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 0.0020.078 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.001 0.004 0.001 0.001 0.001 0.000 0.000 0.000 0.009 0.427 0.770 0.730 0.482 0.163 0.092 0.101 0.176 0.352 1.096 0.638 0.163 0.135 0.226 0.239 0.262 6.051Total 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 Calm140205 1Meteorological 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 METEOROLOGY2.3-87WATTS BARWBNP-105Table 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)DirectionCalm0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.4 18.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW 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 1.144 0.324 0.435 0.718 0.660 0.402 0.213 0.240 0.393 0.588 0.824 0.558 0.361 0.233 0.185 0.230 0.226 6.5890.5160.8521.0400.569 0.2150.1070.150 0.2470.5531.378 0.8800.3310.194 0.1880.2150.306 7.742 0.633 1.134 0.901 0.310 0.104 0.021 0.038 0.068 0.271 1.026 0.622 0.210 0.188 0.257 0.356 0.383 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 3.128 0.009 0.007 0.001 0.000 0.000 0.000 0.004 0.009 0.044 0.145 0.038 0.020 0.030 0.017 0.020 0.012 0.356 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.006 0.016 0.009 0.006 0.002 0.000 0.001 0.000 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 2.3-88METEOROLOGYWATTS BARWBNP-105Table 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)DirectionCalm0.6-1.4 1.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNWSUBTOTAL 0.030 0.051 0.070 0.054 0.031 0.017 0.017 0.032 0.058 0.080 0.044 0.025 0.020 0.016 0.018 0.018 0.5810.1680.2420.3360.336 0.2700.1570.133 0.2050.2750.303 0.2050.1680.124 0.1210.1210.1183.281 0.363 0.655 0.893 0.622 0.281 0.137 0.166 0.359 0.749 1.108 0.575 0.277 0.220 0.170 0.203 0.196 6.9760.2750.5610.5400.216 0.0820.0560.062 0.1550.5091.282 0.5380.2250.127 0.1350.1380.149 5.049 0.415 0.436 0.273 0.070 0.034 0.019 0.037 0.0730.311 1.081 0.439 0.159 0.133 0.123 0.205 0.183 3.992 0.595 0.337 0.123 0.039 0.021 0.006 0.046 0.120 0.340 1.430 0.729 0.2550.211 0.160 0.205 0.223 4.840 0.019 0.007 0.004 0.003 0.003 0.000 0.012 0.049 0.126 0.575 0.223 0.083 0.037 0.016 0.019 0.023 1.1980.0000.0000.0000.000 0.0000.0010.003 0.0080.0320.099 0.0260.0100.004 0.0010.0010.000 0.184 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.006 0.003 0.003 0.001 0.000 0.000 0.000 0.000 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 METEOROLOGY2.3-89WATTS BARWBNP-105Table 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)Direction Calm0.6-1.4 1.5-3.43.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.0570.110 0.147 0.105 0.049 0.023 0.026 0.050 0.0940.111 0.066 0.037 0.033 0.026 0.028 0.033 0.997 0.223 0.314 0.469 0.377 0.291 0.151 0.150 0.206 0.297 0.270 0.240 0.153 0.168 0.150 0.132 0.155 3.749 0.333 0.757 0.964 0.645 0.190 0.072 0.106 0.278 0.617 0.814 0.405 0.205 0.155 0.106 0.136 0.165 5.9500.1420.3880.2930.071 0.0100.0080.018 0.0610.2540.689 0.2080.0790.049 0.0460.0600.066 2.442 0.086 0.147 0.059 0.006 0.003 0.002 0.009 0.016 0.086 0.450 0.130 0.056 0.032 0.025 0.038 0.053 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 0.003 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 0.0000.8751.7471.9431.207 0.5460.2560.314 0.6261.3972.698 1.2510.5910.458 0.3690.4120.493 15.182Total 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 Calm140205 1398Meteorological 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 2.3-90METEOROLOGYWATTS BARWBNP-105Table 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) Direction Calm 0.6-1.41.5-3.4 3.5-5.45.5-7.4 7.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.023 0.041 0.063 0.043 0.014 0.006 0.007 0.018 0.033 0.032 0.018 0.0120.011 0.0100.011 0.012 0.353 0.123 0.185 0.238 0.179 0.109 0.051 0.046 0.0810.113 0.092 0.081 0.065 0.068 0.070 0.082 0.073 1.655 0.205 0.415 0.674 0.439 0.087 0.038 0.049 0.175 0.367 0.376 0.1750.113 0.091 0.069 0.080 0.096 3.449 0.087 0.195 0.208 0.053 0.004 0.006 0.005 0.035 0.178 0.424 0.108 0.044 0.027 0.027 0.041 0.041 1.4840.0170.0660.0340.001 0.0000.0000.003 0.0090.0430.218 0.0460.0230.016 0.0100.0150.018 0.517 0.009 0.009 0.004 0.001 0.001 0.000 0.001 0.0030.011 0.091 0.034 0.009 0.008 0.004 0.004 0.001 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 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.465 0.912 1.220 0.715 0.215 0.1010.111 0.319 0.745 1.235 0.463 0.265 0.220 0.189 0.233 0.240 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 METEOROLOGY2.3-91WATTS BARWBNP-105Table 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 FG CALM 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 2.3-92METEOROLOGYWATTS BARWBNP-105*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/m

3) 5th PercentileX/Q Value (sec/m 3)N 3.312E-43.396E-5 NNE3.341E-44.596E-5 NE 3.954E-43.314E-5 ENE5.060E-42.883E-5 E 5.293E-43.177E-5 ESE5.321E-42.721E-5 SE 6.040E-45.996E-5SSE4.705E-42.622E-5 S 3.068E-42.662E-5 SSW2.901E-42.806E-5 SW 3.441E-41.791E-5 WSW4.394E-43.217E-5 W 3.704E-4-**

WNW1.322E-4-**

NW 2.242E-4-**

NNW3.154E-4-** All DirectionsCombined1.217E-35.323E-4 METEOROLOGY2.3-93WATTS BARWBNP-105* 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/m

3) 5th PercentileX/Q Value (sec/m 3)N 3.674E-43.550E-5NNE3.808E-45.036E-5 NE 4.597E-43.990E-5 ENE5.305E-43.181E-5 E 5.297E-42.989E-5 ESE5.089E-42.572E-5 SE 6.069E-44.769E-5SSE4.645E-42.375E-5 S 3.452E-42.598E-5 SSW3.171E-42.721E-5 SW 3.703E-42.376E-5 WSW4.728E-43.286E-5 W 3.701E-4-**

WNW1.452E-4-**

NW 2.357E-4-**

NNW3.239E-4-** All Directions Combined9.297E-35.263E-5 2.3-94METEOROLOGYWATTS BARWBNP-105 *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 2.3-62 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/m 3)5th Percentilex/Q Value (sec/m 3)Annual Averagex/Q Value (sec/m 3)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-7 S 7.146E-53.246E-67.454E-7 SSW6.759E-53.542E-67.091E-7 SW 8.790E-51.467E-68.111E-7 WSW1.206E-44.466E-69.701E-7 W 9.350E-5-**4.400E-7 WNW2.284E-5-**2.335E-7 NW 4.944E-5-**2.507E-7NNW7.223E-5-**3.935E-7All DirectionsCombined2.717E-41.352E METEOROLOGY2.3-95WATTS BARWBNP-105* 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 2.3-62a 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/m 3)5th PercentileX/Q Value (sec/m 3)Annual AverageX/Q Value (sec/m 3)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-6 S 0.772E-43.211E-60.881E-6 SSW0.731E-43.444E-60.814E-6 SW 0.930E-42.451E-61.001E-6 WSW1.239E-44.608E-61.212E-6 W 0.897E-4-**0.469E-6 WNW0.265E-4-**0.263E-6 NW 0.502E-4-**0.272E-6NNW0.691E-4-**0.416E-6All DirectionsCombined2.797E-41.349E 2.3-96METEOROLOGYWATTS BARWBNP-105*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. Te mperature 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.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/m

3) 8-hour6.447E-516-hour4.452E-5 3-day 1.993E-526-day 6.288E-6 METEOROLOGY2.3-97WATTS BARWBNP-105*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. Te mperature 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.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/m

3) 8-hour6.516E-516-hour4.529E-5 3-day 2.057E-526-day 6.621E-6 2.3-98METEOROLOGYWATTS BARWBNP-105*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 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.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/m

3) Plume Sector 8-hour 16-hour 3-day 26-dayN 3.531E-52.396E-51.034E-53.090E-6 NNE3.884E-52.741E-51.286E-54.342E-6 NE 4.752E-53.308E-51.507E-54.874E-6 ENE6.049E-54.130E-51.804E-55.492E-6 E 6.328E-54.336E-51.909E-55.877E-6 ESE6.363E-54.399E-51.975E-56.257E-6 SE 6.765E-54.629E-52.032E-56.230E-6 SSE5.370E-53.618E-51.536E-54.488E-6 S 3.361E-52.305E-51.017E-53.139E-6 SSW3.182E-52.183E-59.639E-62.980E-6 SW 4.051E-52.750E-51.187E-53.550E-6 WSW5.433E-53.647E-51.535E-54.433E-6 W 3.855E-52.475E-59.465E-62.381E-6 WNW1.071E-57.329E-63.221E-69.895E-7 NW 2.064E-51.333E-55.167E-61.325E-6 NNW3.051E-51.983E-S7.784E-62.033E-6 METEOROLOGY2.3-99WATTS BARWBNP-105*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 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.Table 2.3-65 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/m 3)Plume Sector 8-hour 16-hour 3-day 26-dayN 3.760E-52.581E-51.141E-53.534E-6 NNE4.281E-53.048E-51.458E-55.060E-6 NE 5.631E-53.967E-51.855E-56.228E-6 ENE6.412E-54.438E-51.997E-56.347E-6 E 6.545E-54.532E-52.041E-56.494E-6 ESE6.340E-54.418E-52.018E-56.553E-6 SE 6.677E-54.592E-52.039E-56.353E-6 SSE5.319E-53.601E-51.544E-54.579E-6 S 3.683E-52.545E-51.141E-53.606E-6 SSW3.475E-52.396E-51.070E-53.359E-6 SW 4.397E-53.023E-51.341E-54.174E-6 WSW5.765E-53.933E-51.715E-55.208E-6 W 3.763E-52.438E-50.950E-52.458E-6 WNW1.234E-50.843E-50.369E-51.124E-6 NW 2.116E-51.375E-50.539E-51.406E-6 NNW2.969E-51.946E-50.777E-52.084E-6 2.3-100METEOROLOGYWATTS BARWBNP-105 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/m 3, For Design Basis Accident Analyses Based On Onsite Meteorological Data For Watts Bar Nuclear Plant a(Sheet 1 of 1)A.Regulatory Guide 1.4 Results in original FSAR (5th percentile values) for July 1973 Through June 1975 Data.

b Period(hours)Minimum Distance toExclusion Boundary (1100 m) c Low Population Zone (4828 m) 0-20.692E-3 d0.160E-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 Data e.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 METEOROLOGY2.3-101WATTS BARWBNP-1051. 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/m 3, For Design Basis Accident Analyses Based On Onsite Meteorological Data For Watts Bar Nuclear Plant 1A.Regulatory Guide 1.4 Results in original FSAR (5th percentile values) for July 1973 Through June 1975 Data.

2 Period(hours)Minimum Distance to Exclusion Boundary (1100 m) 3 Low Population Zone (4828 m) 0-20.692E-3 40.160E-3 4 2-8-0.844E-4 4 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 Data 5.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 2.3-102METEOROLOGYWATTS BARWBNP-105 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 METEOROLOGY2.3-103WATTS BARWBNP-105 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 2.3-104METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 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 0.0010.0010.001 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 0.0040.0090.426 0.052 0.084 0.100 0.076 0.040 0.023 0.027 0.063 0.180 0.371 0.146 0.020 0.007 0.010 0.007 0.021 1.2260.0790.124 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 Calm168144 1Meteorological 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 METEOROLOGY2.3-105WATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 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 0.0000.0000.001 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 0.0070.0110.606 0.092 0.155 0.147 0.096 0.052 0.022 0.032 0.035 0.148 0.322 0.169 0.0370.011 0.014 0.015 0.034 1.3830.0840.147 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 Calm168144 0Meteorological 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 2.3-106METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 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 0.0000.0010.001 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 0.0200.0321.171 0.141 0.224 0.221 0.127 0.049 0.028 0.033 0.064 0.230 0.423 0.225 0.049 0.027 0.030 0.036 0.059 1.9680.1250.2090.1170.0300.005 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 Calm168144 0Meteorological 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 METEOROLOGY2.3-107WATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.006 0.006 0.007 0.008 0.005 0.003 0.004 0.0060.011 0.015 0.010 0.006 0.005 0.004 0.004 0.004 0.1040.0500.052 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 0.3530.445 10.566 0.996 1.241 1.060 0.479 0.137 0.057 0.076 0.160 0.699 1.796 0.790 0.289 0.293 0.394 0.403 0.566 9.4361.0631.206 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 Calm168144 175Meteorological 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 2.3-108METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.032 0.029 0.039 0.053 0.029 0.014 0.018 0.032 0.077 0.123 0.101 0.072 0.064 0.059 0.048 0.036 0.8270.1560.142 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 0.5070.457 10.201 0.623 0.322 0.366 0.196 0.040 0.024 0.048 0.083 0.415 1.178 0.307 0.147 0.194 0.263 0.279 0.375 4.8620.3000.171 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 METEOROLOGY2.3-109WATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.046 0.038 0.050 0.064 0.033 0.015 0.016 0.025 0.056 0.103 0.136 0.167 0.183 0.177 0.171 0.080 1.3600.2680.199 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 0.4720.2544.963 0.018 0.016 0.029 0.032 0.005 0.000 0.004 0.010 0.032 0.156 0.040 0.023 0.021 0.029 0.034 0.036 0.4860.0010.002 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 2.3-110METEOROLOGYWATTS BARWBNP-105Table 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) DirectionCalm 0.6-1.41.5-3.43.5-5.45.5-7.47.5-12.412.5-18.418.5-24.4>=24.5Total N NNE NE ENE E ESE SE SSE S SSW SW WSW W WNW NW NNW SUBTOTAL 0.035 0.034 0.048 0.059 0.032 0.016 0.021 0.025 0.036 0.060 0.096 0.162 0.169 0.130 0.127 0.058 1.1090.2210.199 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 0.2920.1202.394 0.001 0.001 0.002 0.004 0.002 0.000 0.000 0.001 0.002 0.005 0.002 0.007 0.002 0.004 0.002 0.002 0.0370.0000.000 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 METEOROLOGY2.3-111WATTS BARWBNP-105Table 2.3-75a Average Annual X/Q's and 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)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 2.3-112METEOROLOGYWATTS BARWBNP-105Table 2.3-75b Average Annual X/Q's and 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 METEOROLOGY 2.3-113WATTS BAR WBNP-105Figure 2.3-1 Normal Sea Level Pressure Distribution Over North America and The North Atlantic Ocean

METEOROLOGY 2.3-114WATTS BAR WBNP-105Figure 2.3-2 Total Number of Forecast-Days of High Meteorological Potential For Air Pollution in a 5 Year Period METEOROLOGY 2.3-115WATTS BARWBNP-105Figure 2.3-3 Climatological Data Sources in Area Around Watts Bar Site METEOROLOGY 2.3-116WATTS BARWBNP-105Figure 2.3-4 Wind Speed at 9.72 Meters All Stability classes, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-117WATTS BARWBNP-105Figure 2.3-5 Wind Speed at 46.36 Meters All Stability Classes, Watts Bar Nuclear Plant, January 1, 1977 -December 31, 1993 METEOROLOGY 2.3-118WATTS BARWBNP-105Figure 2.3-6a Percent Occurrences Of Pasquill Stability Classes A, B, C, And D By Time Of Day, Watts Bar Nuclear Plant, 1974-1 993 METEOROLOGY 2.3-119WATTS BARWBNP-105Figure 2.3-6b Percent Occurrences Of Pasquill Stability Classes E, F, and G By Time of Day, Watts Bar Nuclear Plant, 1974-199 3

METEOROLOGY 2.3-120WATTS BARWBNP-105Figure 2.3-7 Wind Speed at 9.72 Meters for Stability Class A, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-121WATTS BARWBNP-105Figure 2.3-8 Wind Speed at 9.72 Meters for Stability Class B, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-122WATTS BARWBNP-105Figure 2.3-9 Wind Speed at 9.72 Meters for Stability Class C, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-123WATTS BARWBNP-105Figure 2.3-10 Wind Speed at 9.72 Meters for Stability Class D, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-124WATTS BARWBNP-105Figure 2.3-11 Wind Speed at 9.72 Meters for Stability Class E, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-125WATTS BARWBNP-105Figure 2.3-12 Wind Speed at 9.72 Meters for Stability Class F, Watts Bar Nuclear Plant, January 1, 1974 -December 31, 1993 METEOROLOGY 2.3-126WATTS BARWBNP-105Figure 2.3-13 Wind Speed at 9.72 Meters for Stability Class G, Watts Bar Nuclear Plant, January 1, 1974 - December 31, 1993 METEOROLOGY 2.3-127WATTS BARWBNP-105Figure 2.3-14 Topography Within 10 Mile Radius - N METEOROLOGY 2.3-128WATTS BARWBNP-105Figure 2.3-15 Topography Within 10 Mile Radius - NNE METEOROLOGY 2.3-129WATTS BARWBNP-105Figure 2.3-16 Topography Within 10 Mile Radius - NE METEOROLOGY 2.3-130WATTS BARWBNP-105Figure 2.3-17 Topography Within 10 Mile Radius - ENE METEOROLOGY 2.3-131WATTS BARWBNP-105Figure 2.3-18 Topography Within 10 Mile Radius - E METEOROLOGY 2.3-132WATTS BARWBNP-105Figure 2.3-19 Topography Within 10 Mile Radius - ESE METEOROLOGY 2.3-133WATTS BARWBNP-105Figure 2.3-20 Topography Within 10 Mile Radius - SE METEOROLOGY 2.3-134WATTS BARWBNP-105Figure 2.3-21 Topography Within 10 Mile Radius - SSE METEOROLOGY 2.3-135WATTS BARWBNP-105Figure 2.3-22 Topography Within 10 Mile Radius - S METEOROLOGY 2.3-136WATTS BARWBNP-105Figure 2.3-23 Topography Within 10 Mile Radius - SSW METEOROLOGY 2.3-137WATTS BARWBNP-105Figure 2.3-24 Topography Within 10 Mile Radius - SW METEOROLOGY 2.3-138WATTS BARWBNP-105Figure 2.3-25 Topography Within 10 Mile Radius - WSW METEOROLOGY 2.3-139WATTS BAR WBNP-105Figure 2.3-26 Topography Within 10 Mile Radius - W METEOROLOGY 2.3-140WATTS BAR WBNP-105Figure 2.3-27 Topography Within 10 Mile Radius - WNW METEOROLOGY 2.3-141WATTS BAR WBNP-105Figure 2.3-28 Topography Within 10 Mile Radius - NW METEOROLOGY 2.3-142WATTS BAR WBNP-105Figure 2.3-29 Topography Within 10 Mile Radius Watts Bar FSAR Section 2.0 Site Characteristics