ML16256A150

Revision 309 to Final Safety Analysis Report, Chapter 2, Site Characteristics, Section 2.3

ML16256A150
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Site:	Waterford
Issue date:	08/25/2016
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WSES-FSAR-UNIT-32.3-12.3METEOROLOGY2.3.1REGIONAL CLIMATOLOGY2.3.1.1General ClimateThe climate of southeastern Louisiana is classified as humid subtropical (1). It is influenced to a largedegree by the many water surfaces, provided by lakes and streams and by proximity to the Gulf of Mexico.(2)During mid-June to mid-September, the prevailing southeast to southwest winds carry inland warm, moist tropical air favorable for sporadic, often quite localized development of thunderstorms. Occasionally the pressure distribution of the atmosphere changes to bring in a flow of hotter and drier air.The prevailing southeast to southwest winds in the summer months (3) are usually associated with the"Bermuda High" that often remains stationary in the Atlantic Ocean off the southeast coast of the UnitedStates; on some days, however, such winds merely reflect a localized sea breeze. The hotter drier conditions on the other hand are usually caused by the formation of a high pressure system over theWestern Gulf of Mexico. Cool continental air rarely reaches the site region in summer. If a cold frontdoes occur, the cold air behind the front has usually been greatly moderated by solar heating over the plains states to the north or northwest.From late fall until early spring, bursts of cold air do reach southeastern Louisiana, but the cooltemperatures which result seldom last more than a few days (2). Even during these seasons the weather isstill usually dominated by maritime tropical air from the Gulf of Mexico.

(4) The interaction between thismoist air and the much colder, drier air to the north often generates or intensifies winter storms which then usually pass to the north of the site(2,4). Throughout the year, the many water surfaces in the site areamodify the relative humidity and temperature by decreasing the range between extremes.

(2) Duringperiods of southerly wind flow, these effects are increased, imparting the characteristics of a marine climate. Relative humidities of less than 50 percent occur in each month of the year; however, they areless frequent in the summer than during the other seasons (2). Freezing temperatures are not commonand are generally restricted to the period mid-December to mid-March. Some years have none (2).Measureable snowfall in the region is rare. Only four times in the 100 years of data prior to 1975 has thesnowfall depth exceeded two inches (2). A fairly definite rainy period exists from mid-December to mid-March. Rainy weather conditions in this period often persist for several days at a time.Damaging hail and sleet are not frequently reported in the site area(2,4).2.3.1.2Regional Meteorological Conditions for Design and Operating Bases2.3.1.2.1Maximum Winds and Design Wind Speeds WSES-FSAR-UNIT-32.3-2High wind speeds in the area are associated with hurricanes, thunderstorms, frontal passage, andextratropical cyclones. The highest sustained wind speed officially measured at New Orleans was 98 mph from the north on September 19, 1947 during the passage of a hurricane.

(2)Thom (5) has computed the return period for extreme winds (fastest mile of wind exclusive of tornadowinds at height 30 ft. above the ground). According to these statistics, an extreme wind of 100 mph (36 second mean wind) can be expected to occur on the average once every 100 years. Based on a gustiness factor developed by Huss (6), the highest instantaneous gust expected once in 100 years is 130mph.The fastest mile wind speeds for recurrence intervals from 2 to 100 years presented in Table 2.3-1. Forcomparison purposes, the observed fastest mile wind speeds and concurrent directions at Moisant International Airport for the 47 year period 1921-1967 are presented in Table 2.3-2.Of concern to plant designers is the distribution of high wind speeds with height. Using the once in ahundred year fastest mile of wind discussed above (100 mph) and a standard vertical wind profile, thedistribution of extreme winds with height at the site is as follows:0-50 ft.50-150 ft.150-400 ft.100 mph119 mph138 mph2.3.1.2.2HurricanesDuring the period 1871-1977, 55 tropical storms or hurricanes passed within 100 nautical miles of theWaterford 3 site (7)(18). Beginning with 1886, the National Weather Bureau has differentiated betweentropical storms (maximum wind <74 mph) and hurricanes (>74 mph). Since 1886, there have been 26passages of hurricanes and 23 of tropical storms within 100 nautical miles of the site. Since 1900, the centers of three hurricanes have passed over New Orleans.At 9:12 a.m. on September 19, 1947, during the passage of a hurricane, the highest wind of record atMoisant International Airport was measured as 98 mph. Afterwards, but shortly before the eye of the hurricane passed over the station, the velocity indicator became difficult to read; the wind was estimated to reach as high as 110 mph with gusts estimated to 125 mph.In 1965, Hurricane "Betsy" brought destructive winds to the New Orleans Metropolitan area. OnSeptember 9, 1965, at 11:47 pm, the winds at New Orleans International Airport reached 85 mph from the east, with gusts to 112 mph. In New Orleans, an extreme wind of 125 mph from the east was estimated atop the Federal Building. Since 1963, five tropical cyclones with winds in excess of 50 mph, all hurricanes (including Betsy), have passed within 100 nautical miles of the Waterford Site. Of these, Betsywas by far the most severe in the New Orleans-Waterford site area. A summary of these five hurricanes is presented in Table 2.3-137.

WSES-FSAR-UNIT-32.3-32.3.1.2.3ThunderstormsThunderstorms with damaging winds and hail are relatively infrequent. The most damagingthunderstorms are those associated with the passage of a cold front or squall line.

(2)Based on 21 years of records of the US Weather Bureau at Moisant International Airport (1949-1969), the mean number of days with thunderstorms is: Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Annual 2 2 3 5 6 9 16 13 7 2 1 2 68The maximum thunderstorm occurrence during the months of July and August is also reflected in themonthly average precipitation.During the period 1955-1967, hail 0.75 in. or greater in diameter was reported 13 times in the one-degreelatitude-longitude square containing the site (8). These occurrences are relatively infrequent especiallywhen compared to over 100 such hail reports at some locations in Oklahoma.The site area experiences an annual average of 75 days with observable lightning or thunder. There areabout 19 cloud to ground strikes per square mile per year (19). The most serious lightning displays willobviously occur in those thunderstorms associated with frontal passages.The probability of the Waterford Reactor Building being struck by lightning in any year may be calculatedusing the procedures presented in Lightning Protection by J. L Marshal as 0.78 or approximately one lightning strike every 1.3 years.

(19) All critical components and structures at the Waterford plant areprotected against lightning damage by an extensive electrical grounding system.2.3.1.2.4TornadoesA few of the more severe thunderstorms and hurricanes generate tornadoes. According to Thom (9), thetotal frequency of tornadoes for the 10 year period, 1953-1962, by one-degree latitude-longitude squares for southeastern Louisiana is:89-90 W90-91 W29-30 N 9 930-31 N 12 11The mean annual frequency of tornadoes per one degree square in the site area, therefore, is about one.Thom (9) also gives the probability of a tornado striking a point based on the path width and length of alltornadoes reported in Iowa during 1953-1962. The average path area of these storms is given by Thom as 2.8209 square miles. Using this information, the tornado frequency presented above and the methodsuggested by Thom, the annual probability of a tornado striking the site is approximately 6.3 x 10

-4 orabout once every 1585 years.

WSES-FSAR-UNIT-32.3-4Revision 11 (05/01)An examination of tornado statistics for 1950-1977 (20) showed that during this period a total of 112tornadoes had been reported within 50 nautical miles (58 statute miles) of the Waterford site. The average path length and width of these 112 tornadoes is 3.36 miles and 318 ft. respectively; these values yield an average path area of 0.20 square miles.(DRN 00-1171)Using the above, site specific, statistics and Thoms method the probability of a tornado striking theWaterford site is 7.68 x 10

-5 or once in 13,029 years. See section 3.5.1.4.2 for the annual probability oftornado strike used in the TORMIS analysis.(DRN 00-1171)The site specific tornado data described above shows that the two most severe tornadoes to occur in thesite vicinity were classed F4 according to the Fujita Tornado intensity scale (21). This scale, which wasdeveloped by T.T. Fujita of the University of Chicago, classifies tornado intensity and maximum wind speed based upon the observed extent of damage attributable to the storm. The F4 classification is associated with wind speeds (rotational and translational combined) estimated to be between 207 and 260mph.(DRN 00-1171)Even though the probability of a tornado at the site is small, all structures and equipment necessary toinitiate and maintain a safe plant shutdown have been designed to withstand short-term loadings resulting from a tornado funnel with a peripheral tangential velocity of 300 mph and a translational velocity of 60 mph with an external pressure drop of three psi in three seconds. Protection from the design basis tornado is provided by design margins and the judicious use of missile barriers such that the probability does not exceed acceptable value.ATORMIS analysis was performed using tornado data for the years 1954-1995 to compute tornadostrike probability at Waterford 3. The TORMIS analysis was them used to evaluate the protectionrequirements of certain components vulnerable to tornado generated missiles. The TORMIS analysis uses a NRC approved methodology developed by the Electric Power Research Institute (EPRI). The methodology is implemented using the computer program TORMIS.Should the Waterford 3 evaluations using the TORMIS methodology provide results indicating that theplant configuration exceed Waterford 3s 10

-6 acceptance criteria, then missile protective barrier will beutilized to reduce the total cumulative probability value to below the acceptance criteria value of 10

-6.(DRN 00-1171)2.3.1.2.5Air Pollution PotentialQualitative estimates of the dispersion characteristics of a site can be made from tabulated summaries ofmeteorological data. Two types of summaries readily available to meteorologists consist of tabulations ofmixing heights and tabulations of stagnating anticyclone (i.e., high pressure system) occurrences.The mixing height of the atmosphere is defined as the height of that surface based layer through whichpollutant material released to the atmosphere will be thoroughly mixed. The lower the mixing height, the more unfavorable dispersion conditions become. When low mixing heights are in turn combined with lowwind speeds in the mixing layer air pollution problems can result. Using mixing height and wind speed data for the period 1960-1964, Holzworth (10) examined and generally summarized the relative potential foradverse dispersion conditions for urban areas throughout the contiguous United States. Although the Waterford 3 site is located in a rural area, Holzworth's analyses are reasonably applicable. Holzworth's results indicate that the site area can expect to experience between 10 and 15 days each year of "limited dispersion". This value is somewhat high in comparison to much of the eastern US where 5-10 such days generally occur each year but is quite low in comparison to those parts of the U.S. west of the Rocky Mountains.

WSES-FSAR-UNIT-32.3-5Revision 11 (05/01)As indicated earlier, the occurrence frequency of stagnating anticyclones represents another easilyobtainable index of high air pollution potential. Stagnating anticyclones are in fact a cause of low mixing heights, so the two sets of data are interrelated. Using pres-sure gradient and low wind speed criteria, Korshover (11) has determined that from 1936 through 1965, approximately 30 stagnation incidentscovering a total of 110 days occurred in the site area. Such statistics are higher than those for the northeastern U.S. and the mid-west but considerably lower than those for the southeast, especially the inland Carolinas and northern Georgia. Korshover also has concluded that only two stagnation incidents lasting for seven days or longer occurred in the site area in the entire 30-year period examined.In summary it is apparent that both the mixing height and anticyclone data indicate similar conclusionsregarding air pollution potential in the site area. Limited dispersion days occur with greater frequency in the New Orleans area than much of the eastern U.S., but this frequency is far below that experienced west of the Rocky Mountains.Terrain features can also have an unfavorable impact upon the atmospheric dispersion of pollutantmaterial. The terrain in the vicinity of the Waterford site, however, is relatively flat and thus no terrain induced dispersion problems are likely.2.3.1.2.6Snow, Glaze Snow or freezing precipitation is not a serious concern for a power plant in the New Orleans area.Snowfall amounts in excess of two inches have only been recorded four times in the 100 years of data available prior to 1975 (five in. in January 1881, 8.2 in. in February 1895, three in. in February 1899, and 2.7 in. in December 1963 (23)(24)).Similarly, only one glaze storm was reported in the region by the U.S. Weather Bureau in the 28 yearperiod of record (1925-1953).

(12) However, the Weather Bureau data contains only limited information onglaze occurrences in the New Orleans area. Through conversations with the Lead Forecaster at the National Weather Service New Orleans Office (22), who has been a resident of the area for over 60 years,it was learned that since the early 1920s there have been only three significant glaze occurrences in the site vicinity. The most severe occurred in the early 1920s when approximately 1/4 in. of glaze iceaccumulated on vegetation in the area. The accumulated glaze completely melted within less than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. The other two glaze storms occurred on January 22 and 23, 1940 and in the mid to late 1950s.Each of these storms deposited less than 1/4 in. of glaze on vegetation, automobiles, etc. and in both cases the glaze accumulations melted within several hours. In view of the absence of extreme phenomena of this type in the site region, no attempt was made to estimate the weight of a maximum 100-year snowpack in conjunction with the weight of 100-year, 48-hour maximum winter precipitation value.2.3.1.2.7Dry Bulb and Wet Bulb TemperaturesDry bulb and wet bulb data from a 17 year period of record (1948-1964) for Moisant International Airportwere examined to obtain the design basis conditions for the ultimate heat sink. Where necessary, statistical extrapolations of observed results to longer return periods were accomplished.The results of the analyses are presented in Table 2.3-2(a).2.3.2LOCAL METEOROLOGY2.3.2.1Normal and Extreme Values of Meteorological Parameters WSES-FSAR-UNIT-32.3-62.3.2.1.1WindsSurface wind data for New Orleans (Moisant International Airport) for the 10 year period 1951-1960 (3)were used to define long-term wind conditions for the New Orleans area. The annual wind rose shows asouth wind to be the predominant direction (nine percent of the total hours) although eight of the remaining 15 directions have a percentage frequency of six to eight percent. This feature strongly suggests a wide variation in wind direction. Calms occur 12 percent of the total hours. Figures 2.3-1 through 2.3-13 show annual and monthly wind roses for Moisant International Airport. This data is reproduced in tabular form in Tables 2.3-3 through 2.3-15.Joint frequencies of three-hourly wind speed and direction recorded at New Orleans International Airportduring the period July 1972 through June 1975 and February 1977 to February 1978 are presented inTable 2.3-15a. During this four year period southerly winds predominated (approximately 11 percent of the total hours) although several other directions occurred more than six percent of the time. During this period the average wind speed was 8.2 mph and calms occurred during 10.5 percent of the hours.Tabulated wind rose data and actual wind roses for the onsite meteorological station (30 foot level) for theperiods July 1973 through June 1975 and February 1977 to February 1978 are presented in Tables 2.3-16 through 28 and Figures 2.3-14 through 2.3-26. As the onsite data indicate, the site experiences fewer calms and more frequent south-easterly winds than does the airport. The decrease in calm conditions recorded at the site as opposed to the airport may be due to the low wind speed threshold for theanemometer and a longer averaging period of the observation (60 minute) at the site. The directional differences are most likely due to the effects of Lake Pontchartrain and the different relative location of the lake with respect to the airport and the Waterford site.The onsite wind data were used in all of the diffusion analyses performed in conjunction with this report.Since a substantial base of onsite data now exists, no attempts were made to account for any differences between the onsite and offsite data.2.3.2.1.2TemperatureOn the average there are only about seven days a year in the New Orleans area when the temperaturerises to 95

°F or higher (2) and 102°F is the highest temperature of record occurring most recently on June30, 1954 in Orleans Parish. The longest period in New Orleans with temperatures of 90

°F or higher onsuccessive days was 64 days, June 21 - August 23, 1917, but the temperature did not exceed 96

°F. Thewarmest summer was 1951, when the temperature for June, July and August averaged 84.7

°F.From about mid-November to mid-March, the area is subjected alternately to tropical air and coldcontinental air in periods of varying length. About 80 percent of the December-February hourlytemperatures range from 41 to 69

°F. The mean date of the first occurrence of 32

°F or lower is aboutDecember 12, while the mean date of the last occurrence is about February 13. Between these dates, temperatures are above freezing more than six days out of seven entirely with some afternoons having temperatures in the seventies and eighties. The mean length of the freeze-free period is about 302 days.The latest freeze date in spring was March 27, 1955, with 30

°F reported. The earliest freeze date in thefall was November 11, 1894 when a reading of 32

°F was recorded. The usual track of winter storms is to the WSES-FSAR-UNIT-3 2.3-7 Revision 11-A (02/02) north of New Orleans, but occasionally one moves into the area, bringing large and rather sudden drops intemperature. However, the cold spells seldom last more than three or four days. In about two-thirds of the

years, the annual lowest temperature is 24

°F or warmer, with some years entirely above freezing. The all-time record low temperature recorded in New Orleans was 7

°F on February 13, 1899. The coldest winter on record was 1885-1886, when the temperature for December, January and February averaged 50.9

°F.(DRN 01-464)The long-term temperature records of the area show the typical annual cycle. The monthly average temperature varies from a minimum of 54.6

°F in January to a maximum of 81.9

°F in August at MoisantInternational Airport. Temperature records for New Orleans (Audubon Park) and Reserve show similar annual cycles (Table 2.3-29) The average diurnal temperature distribution at Moisant International Airport ispresented in Table 2.3-30. Extremes in temperature range from 7

° F recorded in February, 1899 to 102

°F in June, 1954 (Table 2.3-31). Mean numbers of days when maximum and minimum temperatures exceed

threshold values of 0

°F, 32°F, and 90°F are listed in Table 2.3-32.(DRN 01-464)

For comparison purposes onsite temperature data for the period July, 1972-June, 1975, and the period frommid-February 1977 to mid-February 1978 were tabulated and are presented in Table 2.3-33. The onsitetemperature data show the same tendencies as the New Orleans data. Although the diurnal temperature range is several degrees lower at the site, the annual mean temperature for New Orleans and the site are

within 0.7

° F.2.3.2.1.3Relative Humidity and Fog From December to May, the waters of the Mississippi River are usually colder than the air temperaturefavoring the formation of river fog, particularly with light southerly winds. Nearby lakes also serve to modify the extremes of temperature and to increase the incidence of fog over narrow strips along the shores.

January is the month with the greatest frequency of fog occurrences.

Mean relative humidity at midnight, 6 AM, noon, and 6 PM Central Standard Time and mean number of dayswith heavy fog are listed in Table 2.3-34. In about half of the winter hours, however, the relative humidity is

under 80 percent, and values less than 50 percent are about twice as frequent in winter as in the summer.

2.3.2.1.4 PrecipitationA fairly definite rainy period occurs from mid-December to mid-March. Measurable precipitation occurs on about one-third of the days in conjunction with a warm front or a cold front which has stalled over the northern Gulf of Mexico. Rain is generally continuous and may last for several days. Snowfall amounts are generally light, with the snow usually melting as it lands. Snowfalls of two inches or more occurred in

December, 1963, January, 1881, and February, 1899 and 1895.(DRN 02-217)

April, May, October and November are generally dry, but there have been some extremely heavy showers inthose months. The greatest 24-hour amount of precipitation since 1871 was 14.01 inches which fell on April15-16, 1927, while 13.68 inches fell October 1-2, 1937. The heaviest recorded rate of rainfall in the New

Orleans area was one inch in five minutes measured during a thunderstorm on February 5, 1955; however,such a rate is never long sustained. In contrast, one can expect a period of three consecutive weekswithout measurable rainfall about once in 10 years. The longest period was 53 days from September 29 to November 20, 1924.(DRN 02-217)

WSES-FSAR-UNIT-3 2.3-8 Revision 301 (09/07)

(DRN 02-217, R11-A)

(DRN 02-217, R11-A)

Average monthly and annual precipitation values representative of the area are shown in Table 2.3-35.

Extreme monthly and daily precipitation data and the mean number of days per month when precipitation equaled or exceeded 0.01 inch are listed in Table 2.3-36. Maximum short period precipitation (13) data are shown in Table 2.3-37.

Table 2.3-38 shows monthly frequencies of occurrence of precipitation by time of day at Moisant

International Airport for the period 1951 through 1960.

Annual and seasonal precipitation wind rose data were obtained from the 17 year period of record 1949-

1965 for the U.S Naval Air Station at New Orleans located about 26 miles ESE of the site (14). Table 2.3-39 presents the percentage frequency of wind direction during precipitation at this station. The data show that the highest annual frequency (13.6 percent) of precipitation occurs when the wind is calm ( <

2 mph) and the lowest annual frequency (1.9 percent) of precipitation occurs with wind directions of WSW and

WNW.

2.3.2.1.5 Atmospheric Stability

(EC-1837, R301)

Onsite temperature difference data recorded during the periods July, 1972 through June, 1975 and February 1977 until February 1978 indicate that stable atmospheric conditions (stability classes E, F, and G) occurred about 56 percent of the time and unstable conditions (A, B, and C) occurred about 19 percent of the time. The remaining observations (about 25 percent) fell into the neutral (D) category. The average monthly and annual frequency of the various stability categories (defined in accordance with Safety Guide 23, 2/17/72) for the same period of record are presented in Table 2.3-40. Persistence of certain stable conditions was analyzed for the four years of data gathered. Stable conditions (E, F or G) persisted for up to 47 hours5.439815e-4 days <br />0.0131 hours <br />7.771164e-5 weeks <br />1.78835e-5 months <br /> with longest period occurring in September 1974. Extremely stable

conditions (Class G) persisted for 15 hours1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br /> on six different occasions - all during the first three years of

data in the months October through January. (EC-1837, R301) 2.3.2.1.6 Mixing Height Data

Seasonal morning and afternoon mixing heights as obtained by Holzworth (10) are shown in Table 2.3-41. As expected, mixing heights are higher in summer than winter; the fall values on the average are slightly higher than spring values. Strong, low inversions are a common phenomenon in the area on winter

mornings when the colder Mississippi Delta is surrounded by warmer water.

2.3.2.2 Potential Influence of The Plant and Its Facilities on Local Meteorology

The Circulating Water System for the Waterford 3 plant is a once-through system. Although the discharge of warm water from the plant into the receiving water body will result in some small changes in evaporation rates, temperature and relative humidity, the atmospheric effects of plant operation should

not be noticeable by the local populace.

WSES-FSAR-UNIT-32.3-9Figure 2.3-27(a) through (d) show profiles of the highest terrain for each directional segment in 16directions at mile intervals out to 10 miles from the proposed plant. It can be seen from these profiles that the terrain is quite flat in the surrounding area, as it is on all the Mississippi Delta.Figure 2.3-28 presents a map of the general topographic features that exist within a five mile radius of theproposed plant.2.3.2.3Local Meteorological Conditions For Design and Operating BasesThe meteorological parameters used as input for the design and operation of the plant (exclusive ofradiological considerations) are discussed in Subsection 2.3.1.2.2.3.3ONSITE METEOROLOGICAL MEASUREMENTS PROGRAM2.3.3.1Preoperational Monitoring ProgramAn onsite preoperational meteorological monitoring program was initiated at the Waterford 3 site on June11, 1971 in order to evaluate the effects of topography on the diffusion climatology of the site. Data were collected continuously at this site through June of 1975. At that time the tower monitoring program was temporarily discontinued. In February of 1977, the meteorological monitoring program was reactivated and operated until February of 1978 in order that an additional year of site meteorological data would be available to support this Report.The system consisted of a 130 ft. instrument tower and a temperature controlled shelter at the base of thetower housing the instrument signal conditioning equipment and the digital and analog recordingequipment. The installation was located approximately 1760 ft. east of the Reactor Building in a sugar cane field in an essentially flat area ranging in elevation from 12 to 15 ft. MSL. During most of the year the field was clear of vegetation. However, during the late summer and early fall, the canes have stood ashigh as 8-10 ft. During all seasons, an area of approximately 30 ft. in diameter around the tower was kept clear of all vegetation (see Figure 2.3-29).2.3.3.1.1Equipment The Onsite Preoperational Monitoring System consisted of the following equipment:

a)Meteorological TowerThe instruments were mounted on a 130 foot guyed and grounded open lattice triangulartower measuring approximately 12 inches on a side. The tower was a Tri-Ex Model 15 modifiedby the installation of motorized instrument carriage assemblies. The movable carriage assemblies greatly facilitated instrument inspection, servicing and calibration.During the period 1971-1975, the wind instruments at each level were mounted on athree foot crossarm at the end of a five foot long boom which was oriented so that it pointed slightly south of west. The aspirated radiation shields were counted on 2 1/2 foot long booms which pointed towards the northwest. With the addition of several meteorological sensors in 1977 a second five foot boom was added to each carriage assembly in place of the 2 1/2 foot boom.During the 1977-1978 period all WSES-FSAR-UNIT-32.3-10wind sensors at each level were mounted on three foot crossarms at the end of each boom andeach of the four motor aspirated radiation shields were mounted on the same booms roughly 2 1/2 feet from the tower.b)Wind SensorsThe Waterford 3 Onsite Preoperational Monitoring System was equipped with three windmeasurement sensors during the period 1971 through 1975; one at the 30 foot level and two atthe 130 foot level. A fourth sensor was added at 30 ft. in 1977.1)Thirty Foot Wind SensorsA Weather Measure Corporation W1034 Low Threshold Recording Wind System was installedat the 30 foot level. This system is especially suited for atmospheric diffusion studies and offers a low threshold, high response record of wind direction and windspeed. The system was composed of the following components:

• W103/6L low torque, high frequency tachometer, six-cup anemometer with athreshold response of 0.6 mph (0.26 m/s) and a distance constant of five feet.

• W104 lightweight vane. Response characteristics for the two-wiper vane are azero degree dead band, 0.4 percent damping ratio, approximately 3.5 ft.

distance constant, and a 0.75 mph (0.34 m/s) threshold, and

• W1034/540 degree translator. Signal conditioning, power stabilization, andranging of the sensor outputs were provided by a 0 to 540 degree translator.

Specifications and a photograph of the W1034 wind system are shown on Figures 2.3-30 through 2.3-32.In 1977, a Gill Bivane was installed at the 30 foot level to record vertical and horizontal winddirectional fluctuations. A description of this bivane is included under part (b) below. Only the directional vane portion was installed.2)One Hundred Thirty Foot Primary Wind SensorsA Gill Anemometer Bivane was located at the 130 foot level to record wind direction and speed.The anemometer bivane is a further development of the well known Gill Bivane. While the winddirection sensitivity characteristics of the bivane have been retained, a windspeed sensor ofcomparable sensitivity was incorporated as an internal part of the basic instrument for the period 1971 through 1975 only. The vane portion alone was used starting in 1977.The windspeed sensor was a four-bladed polystyrene foam propeller molded in the form of a truehelix providing one revolution for each foot of passing wind. Due to the extreme light weight of thepropeller, it had almost negligible inertia thus providing excellent dynamic response both accelerating and decelerating. Threshold sensitivity was 0.3-0.5 mph yet the propeller was rugged enough to withstand winds in excess of 60 mph.

WSES-FSAR-UNIT-32.3-11The propeller drove a miniature dc tachometer generator mounted in the counter-weight section ofthe vane. The signal was fed through two tiny wires in the vertical shaft to a precision slip ring assembly in the lower section. The signal was then coupled through suitable calibrating and damping circuitry in the power supply translator to the digital data logger. Tachometer life expectancy was in excess of a billion revolutions or three to four years of normal operation.A synchronous 110 volt, 60 hz external drive motor was supplied with the instrument forcalibration of windspeed after installation of the system.Complete specifications and a photograph of the Gill Anemometer Bivane are shown on Figures2.3-33 and 2.3-34.When the reactivation of the meteorological tower took place in February of 1977, a WeatherMeasure Low Threshold Wind System was installed at the 130 foot level as the primary wind sensor. This sensor is identical to the one discussed above for the 30 ft. wind measurements, except that it has a three-cup anemometer with a distance constant of 7.3 ft.3)One Hundred Thirty Foot Backup Wind SensorA four bladed Weather Measure Corporation W101-P Skyvane 1 Wind Sensor was installed at the130 foot level as a backup instrument to record windspeed and direction. The starting speed of this instrument is approximately 1 mph (0.45 m/s) with complete tracking beginning at approximately 3 mph (1.35 m/s). The distance constant at a windspeed of 30 mph (13.5 m/s) was 6.2 feet with a time constant of 0.145 second. The accuracy was +/-1 mph below 25 mph and +/-

5 percent above 25 mph. A 540 degree translator was used for signal conditioning. Complete specifications and a photograph of the W101-P Skyvane 1 System are shown on Figures 2.3-35 and 2.3-36.When the meteorological program was reactivated in February of 1977, the skyvane sensor wasdeleted from meteorological system.2.3.3.1.2Temperature Sensors Temperature difference between the 30 and 130 foot levels was measured by four Weather MeasureCorporation TMT-1 temperature probes. Two probes were housed at each level in stainless steel tubes.A Weather Measure Corporation IS6 Motor Aspirated Radiation Shield provided continuous aspiration ofthe temperature sensors. This solar radiation shield is constructed of aluminum and painted with white epoxy enamel for maximum reflection of radiant energy.For the first few years of operation, two of the temperature probes were linked in an electrical bridge toyield direct temperature difference (T) measurements. The other two probes measured temperaturedirectly and were used for backup T measurements. When the system was reestablished in February of1977, two complete, bridged T621-TP20 T systems were installed and ambient temperature data wasextracted electronically at the 30 foot level.

WSES-FSAR-UNIT-3 2.3-12 Revision 303 (06/09)

(EC-1837, R301)

The TMT-1 temperature probe consisted of a thermistor composite and a resistance composite of known resistance value. The TMT-1 sensor had an absolute accuracy of +0.055F and when bridged satisfied the T accuracy requirements of NRC Safety Guide 23 (2/17/72).

(EC-8688, R303)

The T621-TP20 probe was a three-thermistor composite element. The element provided a large change in resistance in response to a relatively small change in temperature. The probe had an accuracy and interchangeability of +/-O.1C (+/-O.18F) and when bridged satisfied the T requirements for Safety Guide 23. (EC-1837, R301; EC-8688, R303) 2.3.3.1.3 Data Acquisition System

A Weather Measure M731 Digital Data Logger was originally used to scan, digitize and record the input data. The data logger checked all sensors once every five minutes and recorded the instantaneous data

on punched paper tape.

Complete specifications and a photograph of the M731 appear on Figures 2.3-37 and 2.3-38, respectively.

In February 1973 an Analog Data Acquisition System was installed at the site as a backup for the Digital

System. The Analog System consisted of two Weather Measure REW-2P-12V Potentiometric Recorders and one Weather Measure REW-12-3 Potentiometric Recorder. The Analog Data Acquisition System continuously recorded windspeed, wind direction and temperature at the 30 and 130 foot levels and

differential temperature between the levels.

In February of 1977, when the system was reactivated, two important data acquisition changes were made. First, the paper tape recorder was replaced with a magnetic tape recorder. Second, the scanning rate of the data logger was changed from once every five minutes to once per minute. Additionally, averaging cards were added to the W1034 wind circuitry to yield 60 second average, rather than one minute instantaneous values for the wind speed and direction data measured by these sensors.

These changes allowed the monitored data to provide a better representation of hourly conditions since the more rapid scanning rate of the data logger more closely approaches true integration of all the data.

This effect was further enhanced by the averaging cards used with the wind direction and windspeed sensors since averages generated by these circuits were based upon a sampling (scanning) rate of several times per second. Overall equipment accuracies are presented in Table 2.3-138.

2.3.3.1.4 Overall System Accuracies

The overall system accuracies associated with the meteorological parameters recorded at the Waterford 3 site are presented in Table 2.3-138. These overall accuracies included the accuracies associated with the instrumentation i.e., sensor probes, signal conditioners, electronic averaging circuitry (as applicable),

digital data logger and potentiometric chart recorder (as applicable), and data processing procedures (specifically, chart trace reading errors). The overall accuracy of each one hour average in Table 2.3-138 is equal to the square root of the sum of the squares of the component accuracies described above, divided by the square root of the number of samples used to define the one hour average. It should be noted that a slight decrease in the overall system accuracies of the W103 and W104 wind sensors occurred with the 1977-1978 data because electronic averaging circuits (with their WSES-FSAR-UNIT-3 2.3-13 Revision 301 (09/07) intrinsic accuracies) were retrofitted to these sensors only.

2.3.3.1.5 Quality Control and System Maintenance

(EC-1837, R301)

In order to assure the necessary data recovery of greater than 90 percent as specified by NRC Safety Guide 23 the monitoring system was inspected each workday by an employee of the Louisiana Power &

Light Company. Additionally, a more thorough check of all instruments was made at each magnetic tape and strip chart change, and the entire system was checked and calibrated on a regular 90 day schedule

by a qualified vendor representative. (EC-1837, R301) 2.3.3.1.6 Data Processing

The meteorological data acquired at the site was placed on disc file in the Ebasco Services Incorporated computer center. After a quality control check hourly averages were generated from valid instantaneous or averaged data points taken during the hour. During the period 1971-1975 only those hours with a minimum of six instantaneous observations (taken at five minute intervals) of lower level windspeed, wind direction and temperature difference were considered as "valid" hours of data. After 1977, when the

meteorological system was upgraded, 60 data points taken once per minute were averaged to form hourly values. Only hours with a minimum of 15 consecutive minutes of temperature difference, and

lower level windspeed and direction data were considered "valid" during this period.

One exception to this procedure occurred during several relatively brief periods of data logger malfunction when data were taken at ten minute intervals. Data from these periods were considered valid provided that all six of the observations taken during the hour were present. This procedure was considered acceptable since the observations were evenly distributed throughout the hour and since it was consistent with the practice followed during the 1971-1975 monitoring period of using a minimum of six observations to represent an hour of valid data. These valid hourly values were used to prepare the monthly and annual joint frequency distributions of wind direction and speed by stability class.

Occasionally, a failure in the digital data acquisition system would require reliance upon the backup data acquisition system for short periods of data. These data were subjected to the same rigorous quality

control inspection as the digital data and then were digitized to hourly average values which were

inserted into the hourly average data base in place of the missing or erroneous data from the data logger.

(Data for which no backup was available were replaced by 999 in the database.)

During the 1972-1975 monitoring period, strip chart data were digitized manually by a professional meteorologist. Digitizing of strip chart data during the 1977-1978 monitoring period was performed by Envirodata Corporation of Burlington, Massachusetts using electronic digitizing equipment. The hourly

values were returned on computer punch cards for merging with the hourly database.

Less than 10 percent of the data collected during the 1972-1975 monitoring period was acquired by digitizing of strip charts. During the 1977-1978 monitoring period approximately two months (17 percent) of the hourly data were obtained from the analog data acquisition system.

WSES-FSAR-UNIT-3 2.3-14 Revision 301 (09/07) 2.3.3.1.7 Joint Wind/Stability Data (EC-1837, R301)

Tables 2.3-42 through 2.3-132 are monthly average and annual average joint frequency tables (windspeed/wind direction/stability class) for the four years of record July 1972 through June 1975 and February 1977 to February 1978. The tables are based upon wind data collected at the 30 foot level of

the Waterford 3 meteorological tower and upon data for the temperature difference between 130 ft. and 30 ft. The temperature difference data were converted to stability class summaries using the procedures outlined in Safety Guide 23. Data recovery percentages for the onsite program on a monthly basis are

summarized in Table 2.3-133. (EC-1837, R301)

As indicated earlier, onsite meteorological data is available for four full annual cycles, three from July of 1972 through June of 1975 and one from mid-February of 1977 to mid-February of 1978. Sufficient data

thus exists to determine the diffusion characteristics of the Waterford 3 site without the need for

consideration of offsite data sources or data representativeness.

2.3.3.2 Operational Monitoring Program

This section describes the monitoring program that is currently established and will be utilized by Louisiana Power & Light Company during the operation of Waterford 3. The operational monitoring program will be a continuation, for the most part of the monitoring program conducted prior to the operation of Waterford 3. The preoperational monitoring program has been described in detail in

Subsection 2.3.3.1.

(DRN 01-156, R11-A;02-217, R11-A; EC-1837, R301)

The operational phase Meteorological Monitoring Program is designed to comply with the NRC requirements presented in Regulatory Guide 1.23 proposed Revision 1 (September 1980) concerning meteorological monitoring systems at nuclear power plants and NUREG-0654 Revision 1 (November 1980) concerning emergency response plans and preparedness. The Onsite Meteorological Monitoring Program is comprised of two completely independent monitoring systems, designated as the Primary and Backup Meteorological Monitoring Systems. A generalized plot plan of the Meteorological Monitoring System compound and the site specific location of the primary and backup system compounds are presented on Figures 2.3-46 and 2.3-47 respectively. Each system consists of an equipment shelter and

a meteorological tower with associated instrumentation. The Primary and Backup Meteorological

Monitoring Systems are also equipped with an independent power supply, lightning protection equipment, electronic signal conditioning and communication cables which link the equipment at the shelters with the Plant Monitoring Computer (PMC). Values of meteorological parameters are simultaneously recorded on Data Loggers located in each of the equipment shelters and by the PMC. The redundancy between these independent monitoring systems as well as the distance separating the two compounds, (1200 ft.

approximately 4 times the mean path width of a site specific tornado), is provided to ensure that basic meteorological information will be available to the plant operators during and immediately following any potential accidental airborne radiological release. The Meteorological Monitoring System will provide updated meteorological data to the Plant Monitoring Computer (PMC). The software on the PMC will quality assure and store the data. The PMC software will provide the data to the Control Room, Technical Support Center, Emergency Operations Facility, and the Backup Emergency Operations Facility. In the event of an emergency situation at the Waterford 3 plant, real time 15 minute average

meteorological data on the PMC will be used by an atmospheric transport and diffusion model to

calculate offsite (DRN 01-156, R11-A;02-217, R11-A; EC-1837, R301)

WSES-FSAR-UNIT-32.3-15 Revision 11-A (02/02)(DRN 02-217) radiological dose estimates. (See the Waterford 3 Emergency Plan for more detailed information).(DRN 02-217) 2.3.3.2.1 Objectives The important objectives of the operational Meteorological Monitoring Program include provision of the following:a)Real time data to be used as input for radiological diffusion estimates in the event of an accidental release of radioactive material into the atmosphere;b)Data to be combined with previously collected data in order to continually update and archive the onsite meteorological record used for long-term (normal release) radiological diffusion estimates;

andc)Correlat ion between atmospheric diffusion conditions and the Environmental Surveillance Program.

2.3.3.2.2 Equipment The onsite monitoring system consists of the following equipment:a)Meteorological Towers(DRN 01-156)The monitoring system utilizes a 200 ft. (61 m) tower at the primary system compound and a 200 ft.

(61 m) tower at the backup system. Both towers are open lattice, guyed and grounded structures

equipped with pulley elevator systems for raising and lowering sensors during maintenance, calibration and servicing. Standard boom arms, approximately 8 feet in length (and oriented into the

prevailing wind directions are located at 33 ft.(10 m), 199 ft. (61.6 m) on the primary and backup towers. The prevailing wind direction is not readily apparent on the annual wind rose for Waterford 3 (Figure 2.3-26), however it shows equal predominance of SE and NE winds as well as minimal frequency of WSW through WNW winds. Therefore the boom arms are pointed on the east

direction from the tower to minimize the frequency of wind blowing through the tower lattice toward the sensors. A summary of the meteorological parameters measured at each compound (primary

and backup) is presented in Table 2.3-139.b)Wind SensorsThe monitoring system is equipped with Wind Sensors. The wind speed sensors meet the RG 1.23 performance requirements summarized in Table 2.3-141.

Wind DirectionThe monitoring system is equipped with Wind Direction Sensors. The wind direction sensors meet the RG 1.23 performance requirements summarized in Table 2.3-141.(DRN 01-156)

WSES-FSAR-UNIT-32.3-16 Revision 11-A (02/02)(DRN 01-156)c)Temperature Sensors Measurements of temperature difference between the 33 and 199 ft. (10 and 61.6 m) levels and of ambient temperature at 33 ft. (10 m) are made within performance requirements specified in Table

2.3-141.d)PrecipitationPrecipitation is measured by a recording rain gauge. The performance of this gauge meets requirements summarized in Table 2.3-141.e)Data Acquisition SystemThe acquisition of the meteorological data from the Primary and Backup Meteorological MonitoringSystems is accomplished via a data link to the Plant Monitoring Computer System (PMC). Theprogram averages data from the Environmental Monitoring System. The incoming data undergoesquality assurance checks for validity and are flagged if obvious errors are detected. The flag which is assigned to each data point indicates whether the data are valid, invalid, or suspicious. In the event of an accidental release of high levels of radiation at the plant, the quality assured 15 minute averages of meteorological parameters which are used to calculate offsite radiological dose estimates in compliance with NUREG-0654. (See the Waterford 3 Emergency Plan for more

detailed information.)(DRN 01-156)f)Overall System Accuracies The overall system accuracies associated with the meteorological parameters at the Waterford 3 site are compared to NRC requirements and are presented in Table 2.3-141. These overallaccuracies include the accuracies associated with the instrumentation WSES-FSAR-UNIT-3 2.3-17 Revision 14 (12/05) and electronic signal conditioning. The overall accuracy is equal to the root of the sum of the squares of the individual errors associated with the components described above.

(DRN 03-2055, R14) 2.3.4 SHORT-TERM (ACCIDENT) DIFFUSION ESTIMATES

2.3.4.1 Objective

Five years of onsite meteorological data from the WSES facility, 1997 through 2001, was used to evaluate the accident meteorology for the Waterford area. Accidents are postulated to characterize upper limit concentrations and dosages that might occur in the event of an inadvertent release. Among the basic inputs to the accident analysis are the meteorological conditions that determine the dilution

capacity of the atmosphere.

2.3.4.2 Calculations - Offsite Diffusion Estimates

Dilution factors (X/Qs) for ground level releases were determined using the methodology presented in Regulatory Guide 1.145 (Reference 25). The X/Q values applicable for accident releases were calculated at the exclusion area boundary (EAB) and at the outer boundary of the low population zone (LPZ) using the joint frequency distributions of wind speed and wind direction by atmospheric stability class. The EAB and LPZ distances are 914 meters and 3,200 meters, respectively. Winds were

determined at the 10-meter level and the stability class was based on the vertical temperature gradient

between 10 meters and 60 meters.

Atmospheric dispersion values (X/Q values) as functions of direction for various time periods at the exclusion area boundary (EAB) and the outer boundary of the low population zone (LPZ), were determined by the use of the computer code PAVAN. The X/Q calculations are based on the theory that material released to the atmosphere will be normally distributed (Gaussian) about the plume centerline.

A straight-line trajectory is assumed between the point of release and all distances for which X/Q values are calculated (References 25, 26). Using joint frequency distributions of wind direction and wind speed by atmospheric stability, the PAVAN code provides the X/Q values as functions of direction for various

time periods at the EAB and LPZ.

The PAVAN code manual (Reference 26) divides release configurations into two modes, ground release and stack release. A ground release includes all release points that are effectively lower than two and one-half times the height of the adjacent solid structures. The identified release point to be evaluated at

Waterford 3 is effectively lower than two and one-half times the height of the reactor building (61.0 meters). Therefore, the Waterford 3 release mode is classified as a ground release.

Within the ground level release class, two sets of meteorological conditions are treated differently. During neutral (D) or stable (E, F, or G) atmospheric stability conditions when the wind speed at the 10-meter level is less than 6 meters per second (m/s), horizontal plume meander is considered. X/Q values are

determined through the selective use of the following set of equations for ground-level relative

concentrations at the plume centerline. (DRN 03-2055, R14)

WSES-FSAR-UNIT-3 2.3-18 Revision 14 (12/05)(DRN 03-2055, R14) 10u Q 1/ Equation 1 3 1/10 u Q Equation 2 10 u Q 1/ Equation 3 Where: X/O is relative concentration, in sec/m 3 U 10 is average wind speed at 10 meters above plant grade, in m/sec y is lateral plume spread, in meters, a function of atmospheric stability and distance z is vertical plume spread, in meters, a function of atmospheric stability and distance y is lateral plume spread with meander and building wake effects, in meters, a function of atmospheric stability, wind speed, and distance A is the smallest vertical-plane cross-sectional area of the reactor building, in meters 2 PAVAN calculates X/Q values using Equations 1, 2, and 3. The values from Equations 1 and 2 are compared and the higher value is selected. This value is then compared with the value from Equation 3, and the lower value of these two is selected as the appropriate X/Q value.

During all other meteorological conditions, unstable (A, B, or C) atmospheric stability and/or 10-meter level wind speeds of 6 m/s or more, plume meander is not considered. The higher value calculated from

equation 1 or 2 is used as the appropriate X/Q value.

From these results, PAVAN constructs a cumulative probability distribution of X/Q values for each of the 16 directional sectors. This distribution is the probability of the given X/Q values being exceeded in that sector during the total time. The sector X/Q values and the maximum sector X/Q value is determined by effectively plotting the X/Q versus probability of being exceeded and selecting the X/Q value that is exceeded 0.5% of the total time. This same method is used to determine the 5% overall site X/Q value.

Table 2.3-136 presents the 0.5% maximum and five percent atmospheric dispersion coefficients calculated for the plant exclusion area boundary and the outer boundary of the low population zone.

2.3.4.3 Calculations - Onsite Diffusion Estimates The atmospheric dispersion estimates for the Waterford 3 control room were calculated based on the guidance provided in draft Regulatory Guide 1111 (Reference 28). The control room X/Qs were calculated for all probable release points (e.g., east and west side ADVs and main steam safety valves (MSSVs) to both

control room emergency air intakes using the ARCON96 computer code (Reference 27) using the hourly

meteorological data for the years 1997 through 2001. The approximate locations of the assumed release points and approximate locations of the control room intakes are shown on Figure 2.3-48. In all cases, the

intervening structures between the release point and the control room intake were ignored for calculational

simplicity, thereby underestimating the true distance to the control room intakes. Atmospheric stability was

determined by the vertical temperature difference (T) measured over the difference in measurement height and the stability classes given in Regulatory Guide 1.23 (Ref. 29). All releases were assumed to be point ground-level releases. For each of the source-to-receptor combinations, the X/Q value that is not exceeded more than 5.0 percent of the total hours in the meteorological data set (e.g., 95-percentile X/Q) was determined. The X/Q values for source-receptor pairs are shown in Table 2.3-136. Historical graphically frequency distributions are presented in Figures 2.3-41 through 2.3-45. (DRN 03-2055, R14)

WSES-FSAR-UNIT-3 2.3-19 Revision 15 (03/07) 2.3.5 LONG-TERM (ROUTINE) DIFFUSION ESTIMATES

2.3.5.1 Objective

Annual joint frequencies of wind direction, windspeed and stability class were determined from hourly averages of temperature difference, wind speed and wind direction at the 30 ft. level of the onsite tower.

These Parameters were used as input to a computerized Gaussian diffusion model which calculates annual average X/Q values for distances out to 80.5 kilometers from Waterford 3. The basic equation

used in this diffusion model is:

(DRN 06-905, R15) 1 (x) u F X 2.032 = X/Q j z i-ij ij (DRN 06-905, R15) where: X/Q = average annual dilution factor, sec/m 3

x = downwind distance, m

F ij = joint frequency of i th speed class j th , stability class and given wind direction u i = mid-point of windspeed class for 30 ft. wind level, m/sec zj(x)= vertical dispersion coefficient with a volumetric correction for a release within the building cavity, at a distance x, for the j th stability class. This correction is of the form:

zj 3 /cD + = (x)1/2 2 2 zj zj where: D = maximum adjacent building height (61 m)

zj = vertical dispersion coefficient (m) for the j th stability class and downwind distance x.

c = building wake constant (assumed to be 0.5).

The X/Q values calculated using the model described above were adjusted to reflect the results of an NRC analysis of the straight line trajectory model (Regulatory Guide 1.111, March, 1976). This adjustment is accomplished by multiplying the X/Q values by the following correction factors which-apply in areas with terrain features similar to those at the Waterford 3 site. Distance (dis) Correction dis 1 mile 4.0 (DRN 06-869, R15) 1 mile < dis 2 miles 2.0 2 miles < dis 3 miles 1.5 3 miles < dis 10 miles 1.25 (DRN 06-869, R15) dis >10 miles 1.0 WSES-FSAR-UNIT-3 2.3-20 Revision 14 (12/05)2.3.5.2 Calculations Table 2.3-135 presents the annual average X/Q values at the site exclusion area boundary for each of the 16 cardinal directions. Table 2.3-134 presents annual average X/Q values for the sixteen directions out to a distance of 80.5 kilometers (50 miles) from the plant.

SECTION 2.3: REFERENCES

1) Trewartha, G T, An Introduction to Climate , McGraw-Hill, New York, 1954.

2) Local Climatological Data, Annual Summary with Comparative Data for New Orleans, Louisiana, U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data

Service, 1972.

3) Summary of Hourly Observations for New Orleans, Louisiana, Moisant International Airport 1951 - 1960, Climatography of the United States No. 82-16, 1962.

4) Climates of the States for Louisiana, U.S. Dept. of Commerce, Weather Bureau, Climatography of the United States No. 60-16, December 1959.

5) Thom, H.C.S., New Distribution of Extreme Winds in the United States, Proceedings of the ASCE, Journal of the Structural Division, July 1968.

6) Huss, P.O., Relation Between Gusts and Average Wind Speed, Report 140, David Guggenheim Airship Institute, Cleveland, Ohio, 1946.

7) Tropical Cyclones of the North Atlantic Ocean, Weather Bureau Technical Paper No. 55, 1965.

8) Severe Local Storm Occurrences, ESSA, U.S. Dept. of Commerce Technical Memorandum WBTM FCST 12, 1969.

9) Thom, H.C.S., Tornado Probabilities, Monthly Weather Review , U.S. Weather Bureau, Washington, D.C., October-December 1963, pp 730-736.

10) Holzworth, George C., "Mixing Heights, Wind Speeds, and Potential for Urban Air Pollution Throughout the Contiguous United States", AP-101, Division of Meteorology, EPA, Office of Air

Programs, Research Triangle Park, North Carolina, January 1972.

11) Korshover, Julius, Climatology of Stagnating Anticyclones East of the Rocky Mountains, 1936 - 1965, ESSA, U.S. Dept. of Commerce, U.S. Dept. of HEW, National Center for Air Pollution

Control, Cincinnati, Ohio, 1967.

12) Bennett, Ivan, Glaze - Its Meteorology and Climatology, Geographical Distribution, and Economic Effects, U.S. Army Environmental Protection Research Division Technical Report EP-105, March

1959.

13) Maximum Recorded United States Point Rainfall for 5 minutes to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> at 296 First-Order Stations, Weather Bureau Technical Paper No. 2, U.S. Dept. of Commerce, Weather Bureau, Revised 1963.

14) Summary of Meteorological Observations for Naval Air Station, New Orleans, Louisiana, 1949-1965.

WSES-FSAR-UNIT-3 2.3-21 Revision 301 (09/07)

SECTION 2.3: REFERENCES (Cont'd)

15) Sagendorf, J. F., Nuclear Power Station Evaluation Program, NOAA, Air Resources Laboratories.

16) Personal Communication with a member of the Site Analysis Branch, U.S. Atomic Energy Commission, May 29, 1973.

17) Electrical Transmission and Distribution Reference Books, Westinghouse, 1950, p. 557.

18) Neuman, C.J. al, 1978: Tropical Cyclones of the North Atlantic Ocean, 1871-1977 , U.S. Department of Commerce, NOAA, National Climatic Center, Asheville, North Carolina.

19) Marshall, J.L., 1973: Lightning Protection , John Wiley & Sons Inc, New York.

20) U.S. Department of Commerce, NOAA, National Severe Storms Forecast Center, Listing of Reported Tornadoes within 50 miles of the Waterford Site for the period 1950-1977.

21) Fujita, T.T., 1973: Memo to National Weather Service Offices re: FPP Classification of Tornado.

22) Personal communication with R.F. Hasling, National Oceanic and Atmospheric Administration, National Weather Service, New Orleans, Louisiana; December 12, 1978.

23) Climatological Record, New Orleans, La, supplied by the National Climatic Center, Asheville, North Carolina.

24) U.S. Department of Commerce, Weather Bureau, Local Climatological Data, New Orleans, Louisiana (Moisant Field); December 1963.

(DRN 03-2055, R14)

25) Regulatory Guide 1.145, Atmospheric Dispersion Models for Potential Accident Consequence Assessments at Nuclear Power Plants, August 1979.

26) NUREG/CR-2858, PNL-4413, PAVAN: An Atmospheric Dispersion Program for Evaluating Design Basis Accidental Releases of Radioactive Materials from Nuclear Power Stations, November 1982.

27) ARCON96, NUREG/CR-6331, Revision 1, May 1997, Atmospheric Relative Concentrations in Building Wakes.

28) United States Nuclear Regulatory Commission, Draft Regulatory Guide DG-1111, Atmospheric Relative Concentrations for Control Room Radiological Habitability Assessments, December

2001. (EC-1837, R301)

29) USNRC, Onsite Meteorological Programs, Safety Guide 23, February 1972. (DRN 03-2055, R14)

30) USNRC, Proposed Revision 1 to Regulatory Guide 1.23 Meteorological Programs in Support of Nuclear Power Plants, September 1980. (EC-1837, R301)

WSES-FSR-UNIT-3TABLE 2.3-1RECURRENCE INTERVAL AND WIND SPEED (FASTEST MILE)AT NEW ORLEAS, LOUSIANA (at 30 ft.)Recurrence Interval (yrs)Wind Speed (mph)249 1067 2570 5090 100100 WSES-FSAR-UNIT-3TABLE 2.3-2FASTEST MILE SPEED AND WIND DIRECTIONNEW ORLEANS, LOUSIANAMonthDirectionSpeed (mph)JanuaryNE41 FebruaryE44 MarchNW43 AprilSE35 MaySE43 JuneNE40 JulyNW37 AugustSE41 SeptemberSE98 OctoberSE31 NovemberNW28 DecemberSW31 WSES-FSAR-UNIT-3 TABLE 2.3-2(a)Revision 11-A (02/02)

ULTIMATE HEAT SINK METEOLOGICAL DESIGN PARAMETERSPARAMETERTEMPERATURE (F)

PERIOD OF RECORD/LOCATIONMaximum one hour1021870-1972/New Orleans City dry bulb officeMaximum 24 hour92/761870-1972/New Orleans Citydry bulb/associatedoffice wet bulbMaximum one hour83 1946-1976/New Orleans Inter-wet bulb national Airport (Moisant Field)Maximum 3 day89 1959-1964/New Orleans Inter-dry bulb national Airport (Moisant Field) Statistically extra-

polated to a 30 year return period.Maximum 7 day86 1959-1964/New Orleans Inter-dry bulb national Airport (Moisant Field) Statistically extra-

polated to a 30 year return period(DRN 01-464)Maximum one hour102/781870-1972/New Orleans Citydry bulb/associatedoffice wet bulb(DRN 01-464)Maximum one hour83/98 1946-1977/New Orleans Inter-wet bulb/associatednational Airport (Moisant dry bulb field)

WSES-FSAR-UNIT-3TABLE 2.3-3NEW ORLEANS LA.January7440 Obs.MOISANT INTERNATIONAL AIRPORTPERCENTAGE FREQUENCIESOF WIND DIRECTION AND SPEED(1951-1960)

_______________________________________________________________________________________________________________________________

____HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour) 0-34-78-1213-1819-2425-3132-3839-4646+TotalAv Speed

_______________________________________________________________________________________________________________________________

____N+1231+++713.9NNE+1231+612.8 NE+233++811.0EKE+242+++89.9 E+231+69.1 ESE+11138.4SE+22++57.8SSE+331+++99.9S+342++109.8SSW+1321+712.0 SW+11+++38.6WSW+11++++210.7W+111+++211.8 WMW+111+++312.5MW+1111++513.9NNW+12221++814.7CALM8 8TOTAL1122342372++10010.3+ indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-4NEW ORLEANS, LA.February6792 Obs.MOISANT INTERNATIONAL AIRPORTPERCENTAGE FREQUENCIESOF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1232+714.1NNE+1231+712.9 NE+2331++811.5 ENE+232+++710.7 E+221++69.7 ESE+121++411.1 SE+221++59.5 SSE+232+710.3S+3431+1011.0 SSW+1321+812.3SW+111++510.8WSW+11+++29.9 W+111++311.0WNW+1111+412.3NW++11I+414.4 NNW+31+714.8 CALM7 7TOTAL920332891++10010.7+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-5NEW ORLEANS, LA.March7440 Obs.MOISANT INTERNATIONAL AIRPORTPERCENTAGE FREQUENCIESOF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1221++614.0NNE+1221++613.0 NE+133++711.6 ENE+233+710.9E+221++59.2 ESE+121++410.1 SE+221+59.3SSE+3321+910.6 S+3441++1211.8 SSW+1331++912.2SW+121++410.5WSW+111+310.5W+111++310.8WNW+111++412.1NW+1121++514.0 NNW+1121++614.4 CALM7 7TOTAL921322882+10010.9+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-6NEW ORLEANS, LA.April7200 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1211+512.7NNE+122++412.6 NE+121++510.2 ENE+222+69.9E+221+59.1ESE+221++69.4 SE+342++99.2 SSE+3631++1311.2 S+3541++1311.9 SWW+132++611.0SW+111+49.6WSW+111+29.9W+111++210.3WNW+111++++311.6NW+111+++412.6 NNW+1121+513.5 CALM9 9TOTAL1123352461++1009.7+Indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-7NEW ORLEANS, LA.May7440 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+121++511.4NNE+121++411.2 NE+121++511.1 ENE+121++59.8 E+221+58.8ESE+221+58.8SE+331++79.0 SSE+3531+1310.6 S+4531+1310.7 SSW+331+89.0SW+22++57.8WSW+11+27.5W+11+++38.1WNW+11+++28.4NW+111++39.8 NW+121+++511.6CALM11 11TOTAL142835193+++1008.8+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-8NEW ORLEANS, LA.June7200 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+12++48.8NNE+121+39.4 NE+121+49.6 ENE+221+59.5 E+21++47.9 ESE+211+48.5 SE+321+67.7 SSE+442+++109.0 S1452+++128.8 SSW+551+128.4SW+331+77.9WSW+21++48.1 W+21++37.7WUW+11++38.2NW+11+++38.4 NNW+12+++39.1 CALM13 13TOTAL173435121++1007.1+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-9NEW ORLEANS, LA.July7440 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+12++38.5NNE+111+++39.2 NE+221++58.6 ENE+221+++58.7 E+221+++58.6 ESE+21+++47.9 SE+22++57.9SSE+321+68.2S1531++107.5 SSW+441+97.9SW1331++77.4WSW+22++57.7W131++57.0WNW1221+57.8NW+21++47.9NNW+121+49.2CALM16 16TOTAL23373191+++1006.7+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-10NEW ORLEANS, LA.August7440 Obs.MOISANT INTERNATIONAL AIRPORTPERCENTAGE FREQUENCIESOF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+121+++48.8NNE+121+49.6NE+231+69.1ENE+331++79.1 E+321+68.2ESE+21++37.2SE+21+47.0SSE+32++67.9S+421++77.7SSW+53++87.4SW+42++67.0WSW+21++47.3W121++46.9WNW+11+++37.8NW+21147.8NNW+121++49.7CALM18 18TOTAL24373091++1006.2+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-11NEW ORLEANS, LA.September7200 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+122+++611.2NNE+1321+711.7 NE+3541+++1310.7ENE+455I++++1611.4 E+332++89.6ESE+21++47.6 SE+21+57.1SSE+221+58.4S+22++57.8SSW+11+37.3SW+11++26.9WSW+1++16.8W+1++16.7WNW+11++26.4NW+11+++28.0 NNW+111++410.6CALM17 17TOTAL2228291731+++1007.6+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-12NEW ORLEANS, LA.October7440 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedNI1231++812.3NNE+1331++912.2 NE+2531+1211.0 ENE1353++1110.1 E+321+78.9ESE+22++48.0SE+22+47.5SSE+221+48.5S+21+++47.6SSW+11++28.3SW+1+++17.1WSW+1+++17.9W+11++27.2WNW+11+++39.3NW+11I+410.1NNW+1221+712.1 CALM17 17TOTAL2225301941+1008.2+indicates frequency greater than 0 but less 0.5 WSES-FSAR-UNIT-3TABLE 2.3-13NEW ORLEANS, LA.November7200 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1232++913.9NNE+1231+812.6 NE123311010.6 ENE+342++1010.2 E+231+79.1ESE+121+48.6SE+221+58.7SSE+232++810.6 S+132++610.4SSW+12+++49.0SW+11+++29.0 WSW+1++++18.4 W+11++28.2WMW+111+++39.6NW+1111++512.8 NNW+12211+714.2 CALM11 11TOTAL1523312372+1009.5+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-14NEW ORLEANS, LA.December7440 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1221++613.5NNE+1331+812.7 NE+232+89.8 ENE+232+89.9 E+331+78.7 ESEI121+58.8 SE+221+48.3 SSE+321++78.8 S+232++810.5SSW+121+++511.1SW+11+++39.3 WSW+11+++210.0 W+11++++39.5WNW+111++311.5NW+1121++513.0 NNW+1231++713.9 CALM10 10TOTAL1423332261+1009.3+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-15NEW ORLEANS, LA.Annual87,672 Obs.MOISANT INTERNATIONAL AIRPORT PERCENTAGE FREQUENCIES OF WIND DIRECTION AND SPEED (1951-1960)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-3132-3839-4646+TotalAv SpeedN+1221+++612.4NNE+1221++612.0 HE+232++++810.5 ENF+232+++++810.2 E+221+++68.9 ESE+211++48.0 SE+221++58.4 SSE+332++++89.8 S+332+++99.9SSW+231+++79.8SW+211++48.4 WSW+11++++28.6 W+11++++38.6WNW+111++++38.9NW+111++++411.4 NNW+221+++612.8 CALM12 12TOTAL1627321951+++1009.0+indicates frequency greater than 0 but less than 0.5 WSES-FSAR-UNIT-3TABLE 2.3-15ANEW ORLEANS, LA.Annual11,688 Obs.MOISANT INTERNATIONAL AIRPORTPERCENTAGE FREQUENCIESOF WIND DIRECTION AND SPEED(July 1972-June 1975 and Feb. 1977- Feb.1978)HOURLY OBSERVATIONS OF WIND SPEEDDIRECTION (In Miles Per Hour)0-34-78-1213-1819-2425-32>32TotalN0.82.73.62.40.20.00.09.6NNE0.32.12.61.00.00.00.06.1 NE0.41.72.31.00.00.00.05.4 NNE0.61.82.31.00.00.00.05.7 E0.82.02.21.00.10.00.06.0 ESE0.52.12.01.00.10.00.05.7 SE0.32.02.51.50.20.00.06.5 SSE0.11.63.11.70.30.10.06.9 S0.32.64.33.00.50.10.010.8SSW0.42.31.60.70.10.00.05.1SW0.41.61.10.50.00.00.03.6 WS0.51.40.80.50.00.00.03.2 W0.91.70.90.60.10.00.04.2WNW0.51.10.90.50.00.00.02.9NW0.41.01.00.80.00.00.03.2 NNW0.51.31.21.30.10.00.04.4 CALM10.50.00.00.00.00.00.010.5TOTAL 17.9 29.1 32.3 18.5 1.8 0.4 0.0 100.0(a) Subject to computer round-off WSES-FSAR-UNIT-3TABLE 2.3-16[WIND ROSE DATA FOR JANUARY] 1973-1975 AND 1978AT WATERFORD 3 SITE2734.OBSERVATIONS DIRECTION SPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0050.0140.0210.0120.0010.0000.0000.054NNE0.0000.0070.0290.0420.0080.0000.0000.0000.086 NE0.0000.0090.0490.0450.0070.0000.0000.0000.110 EKE0.0000.0070.0470.0310.0100.0010.0000.0000.095 E0.0000.0030.0170.0180.0050.0000.0000.0000.044 ESE0.0000.0060.0360.0330.0060.0000.0000.0000.080 SE0.0000.0100.0430.0300.0100.0010.0000.0000.094 SSE0.0000.0100.0340.0160.0070.0030.0000.0000.071 S0.0000.0030.0180.0130.0030.0000.0000.0000.037SSW0.0000.0050.0150.0150.0040.0010.0000.0000.040SW0.0000.0070.0060.0110.0060.0000.0000.0000.030 WSW0.0000.0060.0050.0040.0040.0000.0000.0000.019 W0.0000.0050.0070.0070.0020.0000.0010.0000.022WNW0.0000.0070.0090.0080.0070.0000.0000.0000.033NW0.0000.0070.0210.0230.0180.0010.0000.0000.070 NNW0.0000.0100.0160.0500.0200.0030.0000.0000.099 CALM0.0180.0000.0000.0000.0000.0000.0000.0000.018TOTAL0.0180.1060.3650.3680.1300.0120.0010.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-17[WIND ROSE DATA FOR FEBRUAURY] 1972-1975 AND 1977-1978AT WATERFORD 3 SITE2585.OBSERVATIONS DIRECTION SPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0,0000.0040.0200.0300.0120.0000.0000.0000.066NNE0,0000.0050.0250.0220.0040.0000.0000.0000.055 NE0,0000.0100.0320.0340.0030.0000.0000.0000.080 ENE0,0000.0070.0210.0090.0110.0020.0000.0000.049 E0,0000.0010.0050.0100.0010.0000.0000.0000.018 ESE0,0000.0050.0170.0290.0070.0000.0000.0000.058 SE0,0000.0070.0190.0150.0110.0010.0000.0000.054 SSE0,0000.0150.0330.0280.0150.0020.0020.0000.095 S0,0000.0160.0270.0210.0140.0050.0000.0000.084SSW0,0000.0080.0190.0130.0110.0040.0000.0000.055SW0,0000.0060.0220.0190.0090.0010.0000.0000.056 WSW0,0000.0070.0180.0100.0070.0030.0000.0000.044 W0,0000.0080.0090.0140.0130.0000.0000.0000.044WNW0,0000.0050.0120.0100.0090.0000.0000.0000.037NW0,0000.0100.0300.0250.0150.0000.0000.0000.081 NNW0,0000.0070.0370.0560.0200.0000.0000.0000.120 CALM0,0050.0000.0000.0000.0000.0000.0000.0000.005TOTAL0,005,0.1220.3470.3440.1610.0190.0020.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-18[WIND ROSE DATA FOR MARCH] 1973-1977AT WATERFORD 3 SITE2706.OBSERVATIONS DIRECTION SPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0040.0100.0140.0070.0000.0000.0000.034NNE0.0000.0060.0110.0280.0100.0010.0000.0000.056 NE0.0000.0060.0340.0320.0130.0010.0000.0000.085 ENE0.0000.0050.0290.0410.0130.0000.0000.0000.088 E0.0000.0020.0140.0140.0010.0000.0000.0000.032 ESE0.0000.0030.0340.0300.0180.0020.0000.0000.088 SE0.0000.0080.0330.0420.0340.0070.0000.0000.123 SSE0.0000.0070.0300.0370.0350.0150.0030.0000.126 S0.0000.0040.0210.0300.0280.0050.0000.0000.090SSW0.0000.0060.0180.0230.0170.0020.0000.0000.067SW0.0000.0040.0110.0190.0130.0010.0000.0000.048 WSW0.0000.0030.0080.0120.0080.0010.0000.0000.031 W0.0000.0030.0080.0050.0050.0000.0000.0000.021WNW0.0000.0030.0050.0060.0060.0000.0000.0000.020NW0.0000.0040.0080.0090.0060.0000.0000.0000.027 NNW0.0000.0040.0140.0220.0090.0000.0000.0000.049 CALM0.0150.0000.0000.0000.0000.0000.0000.0000.015TOTAL0.0150.0710.2900.3640.2210.0350.0040.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-19[WIND ROSE DATA FOR APRIL]1973-1977AT WATERFORD 3 SITE2751.OBSERVATIONS DIRECTION SPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0020.0110.0130.0010.0000.0000.0000.027NWE0.0000.0090.0230.0180.0030.0000.0000.0000.053 NE0.0000.0070.0360.0260.0050.0000.0000.0000.073 EME0.0000.0100.0280.0170.0040.0000.0000.0000.059 E0.0000.0070.0120.0150.0050.0000.0000.0000.039 ESE0.0000.0070.0410.0640.0280.0010.0000.0000.141 SE0.0000.0070.0360.0510.0400.0050.0010.0000.140 SSE0.0000.0070.0280.0410.0250.0050.0000.0000.105 S0.0000.0070.0130.0260.0210.0040.0000.0000.072SSW0.0000.0050.0110.0110.0070.0020.0000.0000.035SW0.0000.0080.0070.0040.0010.0000.0000.0000.021 WSW0.0000.0080.0090.0030.0010.0000.0000.0000.022 W0.0000.0080.0110.0090.0080.0000.0000.0000.036WNW0.0000.0120.0130.0180.0120.0000.0000.0000.055NW0.0000.0120.0150.0120.0090.0000.0000.0000.048 NNW0.0000.0080.0150.0210.0060.0000.0000.0000.049 CALM0.0270.0000.0000.0000.0000.0000.0000.0000.027TOTAL0.0270.1220.3060.3490.1760.0190.0010.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-20[WIND ROSE DATE FOR MAY]1973-1975 AND 1977AT WATERFORD 3 SITE2790.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0100.0200.0040.0010.0000.0000.0000.035NNE0.0000.0070.0260.0200.0020.0000.0000.0000.056 NE0.0000.0130.0440.0210.0000.0000.0000.0000.078 ENE0.0000.0070.0340.0180.0040.0000.0000.0000.063 E0.0000.0010.0120.0100.0010.0000.0000.0000.024 ESE0.0000.0050.0300.0320.0060.0000.0000.0000.073 SE0.0000.0100.0490.0460.0140.0010.0000.0000.121 SSE0.0000.0150.0570.0410.0180.0000.0000.0000.132 S0.0000.0150.0520.0210.0070.0000.0000.0000.096SSW0.0000.0120.0240.0230.0150.0000.0000.0000.074SW0.0000.0100.0140.0200.0050.0000.0000.0000.049 WSW0.0000.0080.0180.0060.0010.0000.0000.0000.034 W0.0000.0070.0140.0050.0010.0000.0000.0000.027WUW0.0000.0120.0150.0040.0010.0000.0000.0000.032NW0.0000.0100.0180.0030.0000.0000.0000.0000.031 NNW0.0000.0100.0220.0120.0010.0000.0000.0000.045 CALM0.0310.0000.0000.0000.0000.0000.0000.0000.031TOTAL0.0310.1530.4500.2860.0770.0020.0010.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-21[WIND ROSE DATA FOR JUNE]1973-1975 AND 1977AT WATERFORD 3 SITE2716.OBSERVATIONS DIRECTION SPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0080.0210.0120.0030.0000.0000.0000.044NNE0.0000.0130.0230.0080.0030.0000.0000.0000.048 NE0.0000.0090.0410.0130.0030.0000.0000.0000.065 ENE0.0000.0090.0320.0110.0010.0000.0000.0000.052 E0.0000.0060.0100.0030.0000.0000.0000.0000.019 ESE0.0000.0090.0220.0040.0000.0000.0000.0000.035 SE0.0000.0160.0360.0270.0030.0000.0000.0000.081 SSE0.0000.0210.0510.0320.0140.0000.0000.0000.119 S0.0000.0270.0610.0270.0040.0000.0000.0000.119SSW0.0000.0240.0520.0160.0010.0000.0000.0000.093SW0.0000.0200.0440.0220.0010.0000.0000.0000.087 WSW0.0000.0210.0270.0080.0010.0000.0000.0000.056 W0.0000.0120.0140.0070.0010.0000.0000.0000.034WNW0.0000.0160.0080.0060.0000.0000.0000.0000.030NW0.0000.0130.0230.0030.0010.0000.0000.0000.040 NNW0.0000.0130.0320.0080.0010.0000.0000.0000.054 CALM0.0250.0000.0000.0000.0000.0000.0000.0000.025TOTAL0.0250.2360.4960.2070.0350.0010.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-22[WIND ROSE DATA FOR JULY]1972-1974 AND 1977AT WATERFORD 3 SITE2886.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0130.0130.0030.0000.0000.0000.0000.029NNE0.0000.0110.0200.0120.0000.0000.0000.0000.042 NE0.0000.0150.0260.0100.0010.0000.0000.0000.052 ENE0.0000.0340.0300.0150.0010.0000.0000.0000.080 E0.0000.0190.0160.0050.0000.0000.0000.0000.040 ESE0.0000.0270.0340.0080.0000.0000.0000.0000.069 SE0.0000.0350.0360.0090.0000.0000.0000.0000.079 SSE0.0000.0320.0450.0100.0000.0000.0000.0000.087 S0.0000.0290.0360.0070.0000.0000.0000.0000.073SSW0.0000.0360.0430.0100.0000.0000.0000.0000.088SW0.0000.0250.0330.0090.0000.0000.0000.0000.067 WSW0.0000.0330.0310.0110.0000.0000.0000.0000.075 W0.0000.0180.0300.0090.0000.0000.0000.0000.058WNW0.0000.0130.0210.0050.0000.0000.0000.0000.040MW0.0000.0120.0270.0050.0000.0000.0000.0000.044 NNW0.0000.0080.0280.0030.0010.0000.0000.0000.041 CALM0.0360.0000.0000.0000.0000.0000.0000.0000.036TOTAL0.0360.3600.4680.1300.0050.0000.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-23[WIND ROSE DATA FOR AUGUST] 1972-1974 AND 1977AT WATERFORD 3 SITE2746.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0110.0200.0040.0000.0000.0000.0000.035NNE0.0000.0140.0540.0150.0010.0000.0000.0000.084 NE0.0000.0110.0380.0300.0000.0000.0000.0000.080 ENE0.0000.0080.0230.0130.0070.0000.0000.0000.052 E0.0000.0080.0230.0210.0080.0000.0000.0000.060 ESE0.0000.0110.0320.0130.0050.0000.0000.0000.062 SE0.0000.0230.0400.0130.0010.0000.0000.0000.077 SSE0.0000.0340.0490.0080.0010.0000.0000.0000.091 S0.0000.0350.0200.0040.0000.0000.0000.0000.059SSW0.0000.0350.0270.0050.0000.0000.0000.0000.067SW0.0000.0280.0280.0040.0000.0000.0000.0000.060 WSW0.0000.0260.0280.0050.0010.0000.0000.0000.059 W0.0000.0240.0160.0060.0000.0000.0000.0000.047WNW0.0000.0150.0230.0030.0000.0000.0000.0000.040NW0.0000.0140.0310.0040.0000.0000.0000.0000.049 NNW0.0000.0090.0330.0030.0000.0000.0000.0000.045 CALM0.0340.0000.0000.0000.0000.0000.0000.0000.034TOTAL0.0340.3060.4850.1510.0240.0000.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-24[WIND ROSE DATA FOR SEPTEMBER] 1972-1974 AND 1977AT WATERFORD 3 SITE2616.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0080.0150.0130.0000.0000.0000.0000.036NNE0.0000.0080.0310.0220.0020.0000.0000.0000.063 NE0.0000.0140.0590.0430.0160.0000.0000.0000.132 ENE0.0000.0110.0360.0350.0060.0000.0000.0000.087 E0.0000.0100.0230.0220.0070.0010.0000.0000.062 ESE0.0000.0230.0510.0320.0030.0000.0000.0000.110 SE0.0000.0260.0410.0120.0020.0010.0000.0000.081 SSE0.0000.0310.0320.0100.0040.0000.0000.0000.078 S0.0000.0240.0290.0060.0020.0000.0000.0000.061SSW0.0000.0230.0250.0080.0010.0000.0000.0000.058SW0.0000.0180.0230.0080.0010.0000.0000.0000.050 WSW0.0000.0190.0160.0080.0030.0000.0000.0000.046 W0.0000.0090.0100.0020.0010.0000.0000.0000.022WNW0.0000.0080.0070.0020.0000.0000.0000.0000.018NW0.0000.0070.0130.0020.0000.0000.0000.0000.023 NNW0.0000.0080.0150.0150.0000.0000.0000.0000.039 CALM0.0330.0000.0000.0000.0000.0000.0000.0000.033TOTAL0.0330.2480.4260.2420.0480.0030.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-25[WIND ROSE DATA FOR OCTOBER] 1972-1974 and 1977AT WATERFORD 3 SITE2647.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0100.0310.0220.0080.0010.0000.0000.072NNE0.0000.0130.0560.0350.0080.0000.0000.0000.111 NE0.0000.0090.0610.0640.0170.0000.0000.0000.151 ENE0.0000.0070.0430.0350.0050.0000.0000.0000.089 E0.0000.0030.0190.0280.0040.0000.0000.0000.054 ESE0.0000.0100.0370.0230.0020.0000.0000.0000.072 SE0.0000.0080.0200.0200.0050.0010.0000.0000.053 SSE0.0000.0150.0120.0070.0010.0000.0000.0000.035 S0.0000.0070.0080.0000.0010.0000.0000.0000.017SSW0.0000.0100.0090.0040.0010.0000.0000.0000.025SW0.0000.0230.0090.0040.0010.0000.0000.0000.037 W0.0000.0120.0060.0040.0010.0000.0000.0000.024 WNW0.0000.0210.0170.0050.0010.0000.0000.0000.044NW0.0000.0210.0370.0100.0020.0000.0000.0000.070NNW0.0000.0180.0410.0190.0030.0000.0000.0000.080 CALM0.0310.0000.0000.0000.0000.0000.0000.0000.031TOTAL0.0310.2020.4210.2850.0600.0020.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-26[WIND ROSE DATA FOR NOVEMBER] 1972-1974 and 1977AT WATERFORD 3 SITE2731.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0060.0210.0300.0080.0000.0000.0000.066NNE0.0000.0060.0300.0290.0040.0000.0000.0000.069 NE0.0000.0070.0490.0520.0140.0000.0000.0000.122 ENE0.0000.0080.0290.0250.0050.0000.0000.0000.067 E0.0000.0050.0160.0160.0020.0000.0000.0000.038 ESE0.0000.0060.0410.0230.0090.0000.0000.0000.079 SE0.0000.0080.0400.0340.0090.0000.0000.0000.091 SSE0.0000.0120.0330.0420.0140.0010.0000.0000.103 S0.0000.0060.0120.0130.0040.0010.0000.0000.036 SSW0.0000.0040.0150.0100.0010.0000.0000.0000.030SW0.0000.0050.0060.0060.0010.0000.0000.0000.018WSW0.0000.0090.0150.0050.0010.0000.0000.0000.030 W0.0000.0060.0170.0120.0030.0000.0000.0000.038 WNW0.0000.0050.0170.0160.0040.0000.0000.0000.042 NW0.0000.0070.0230.0300.0080.0010.0000.0000.069 NNW0.0000.0070.0360.0410.0090.0010.0000.0000.093 CALM0.0080.0000.0000.0000.0000.0000.0000.0000.008TOTAL0.0080.1060.3990.3850.0960.0060.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-27[WIND ROSE DATA FOR DECEMBER] 1972-1974 and 1977AT WATERFORD 3 SITE2843.OBSERVATIONS DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0060.0160.0180.0050.0000.0000.0000.045NNE0.0000.0040.0150.0200.0050.0030.0000.0000.046 NE0.0000.0080.0340.0210.0040.0000.0000.0000.067 ENE0.0000.0070.0310.0170.0040.0000.0000.0000.058 E0.0000.0010.0130.0130.0000.0000.0000.0000.027 ESE0.0000.0050.0350.0270.0090.0010.0000.0000.077 SE0.0000.0100.0310.0330.0190.0020.0000.0000.095 SSE0.0000.0070.0380.0330.0090.0010.0000.0000.089 S0.0000.0080.0390.0270.0050.0000.0000.0000.079 SSW0.0000.0070.0170.0190.0100.0000.0000.0000.053SW0.0000.0060.0120.0120.0070.0000.0000.0000.036WSW0.0000.0080.0170.0060.0040.0010.0000.0000.036 W0.0000.0120.0210.0130.0050.0000.0000.0000.051 WMW0.0000.0070.0230.0210.0080.0010.0000.0000.060 NW0.0000.0060.0300.0200.0120.0000.0000.0000.068 NNW0.0000.0090.0250.0430.0210.0030.0000.0000.101 CALM0.0110.0000.0000.0000.0000.0000.0000.0000.011TOTAL0.0110.1110.3960.3420.1280.0130.0000.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-28ANNUAL WIND ROSE DATA FOR JULY 1972 - JUNE 1975 and FEBRUARY 1977 - FEBRUARY 1978AT WATERFORD 3 SITE32751.OBSERVATIVES DIRECTIONSPEED (MPH) CALM 0.8-3 3.1-7 7.1-12 12.1-18 18.1-24 24.1-32 >32 TOTALN0.0000.0070.0170.0150.0050.0000.0000.0000.045NNE0.0000.0080.0280.0220.0040.0000.0000.0000.064 NE0.0000.0100.0420.0320.0070.0000.0000.0000.091 ENE0.0000.0100.0320.0220.0060.0000.0000.0000.070 E0.0000.0060.0150.0140.0030.0000.0000.0000.038 ESE0.0000.0100.0340.0260.0080.0000.0000.0000.079 SE0.0000.0140.0350.0280.0120.0020.0000.0000.091 SSE0.0000.0170.0370.0260.0120.0020.0000.0000.094 S0.0000.0150.0280.0160.0080.0010.0000.0000.069 SSW0.0000.0150.0230.0130.0060.0010.0000.0000.057SW0.0000.0130.0180.0120.0040.0000.0000.0000.046WSW0.0000.0140.0170.0070.0030.0000.0000.0000.041 W0.0000.0100.0140.0080.0030.0000.0000.0000.035 WNW0.0000.0100.0140.0090.0040.0000.0000.0000.038 NW0.0000.0100.0230.0120.0060.0000.0000.0000.052 NNW0.0000.0090.0260.0240.0080.0010.0000.0000.068 CALM0.0230.0000.0000.0000.0000.0000.0000.0000.023TOTAL0.0230.1790.4050.2870.0960.0090.0010.0001.000 WSES-FSAR-UNIT-3TABLE 2.3-29AVERAGE MONTHLY AND ANNUAL TEMPERATURE FORSELECTED STATIONS IN THE NEW ORLEANS AREA (1931-1960)New Orleans, La - Moisant International AirportJanFebMarAprMayJuneJulyAugSeptOct Nov DecAnnualTemp (F)54.657.161.467.974.480.181.681.978.370.460.055.468.6New Orleans, La - Audubon StationJanFebMarAprMayJuneJulyAugSeptOct Nov DecAnnualTemp (F)55.557.762.168.975.581.182.682.578.971.161.156.669.5Reserve, La - Cooperative ObserverJanFebMarAprMayJuneJulyAugSeptOct Nov DecAnnualTemp (F)53.855.960.667.875.180.082.582.378.770.459.854.668.5 WSES-FSAR-UNIT-3TABLE 2.3-30MEAN MONTHLY AND ANNUAL MAXIMUM, MINIMUM, AVERAGE TEMPERATURESMOISANT INTERNATIONAL AIRPORT (1931-1960)MinimumMaximumMonthMean Daily,(F)Mean Daily,(F)Mean Daily,(F)January64.444.854.6February66.747.557.1March71.251.661.4April77.758.167.9May84.464.474.4June89.670.580.1 July90.672.681.6August90.773.081.9 September87.269.378.3 October80.360.570.4November70.349.660.0December65.345.5 55.4Annual78.259.068.6 WSES-FSAR-UNIT-3TABLE 2.3-31TEMPERATURE EXTREMES*MOISANT INTERNATIONAL AIRPORT, NEW ORLEANS, LOUSIANA Extremes RecordRecord MonthMaximum,(F)YearMinimum,(F)YearJanuary831957141963February841948191951March871955261968April911948381962May961953411960June1001954551966 July991951601967August1001951601968September971954421967October921962351968November861951281968December831951171962JuneJanAnnual1001954141963Note: *Maximum and minimum temperature extremes have been exceeded at other sites inthe locality as follows: Highest temperature 102

°F in June 1954; lowesttemperature 7

°F in February, 1899.

WSES-FSAR-UNIT-3TABLE 2.3-32AVERAGE MONTHLY OCCURENCES OF EXTREME TEMPERATURESMOISANT INTERNATIONAL AIRPORT, NEW ORLEANS, LOISIANA (1947-1972)Mean No. of Days MonthMaximum TemperatureMinimum Temperature 90°F32°F32°F0°FJanuary0*50February0030March0010 April*0*0 May4000 June17000 July20000 August19000 September8000 October1000 November0010 December0*30 Annual68*120Note: *Less than one half WSES-FSAR-UNIT-3TABLE 2.3-33MEAN MONTHLY AND ANNUAL MAXIMUM, MINIMUM AND AVERAGE TEMPERATURESWATERFORD NUCLEAR UNIT 3 ON SITE DATA(JULY 1972-JUNE 1975 AND FEBRUARY 1977-FEBRUARY 1978) MeanMeanMeanTemperatureMaximumMinimumMonth (F) (F) (F) January53.662.448.2February54.562.246.9March63.568.853.8April67.470.964.1May74.581.368.2 June78.585.072.3 July79.887.873.6August79.186.373.6 September77.785.473.7October70.875.961.7 November60.567.553.6 December55.062.345.8Annual67.974.661.3 WSES-FSAR-UNIT-3TABLE 2.3-34MEAN RELATIVE HUMIDITY AND NUMBER OF DAYS WITH HEAVY FOGMOISANT INTERNATIONAL AIRPORT, NEW ORLEANS, LOUISIANA (1949-1972) Relative Humidity (%) Heavy FogMonthOOOOCST 0600CST 1200CST 1800CST(Mean Days)January848667737February838564695 March828460645 April858860662 May868960651 June87906268*

July89916673*August89916673*September87896574*

October848758722 November838659735 December838666755 Annual8588637032Note: *Less than one half.

WSES-FSAR-UNIT-3TABLE 2.3-35AVERAGE MONTHLY AND ANNUAL PRECIPITATIONFOR SELECTED STATIONS IN THE NEW ORLEANS AREA (1931-1960)New Orleans, La - Moisant International AirportJanFebMarApr LayJuneJulyAugSeptOct Nov DecAnnualPrecip (in)3.843.995.344.554.384.436.725.345.032.843.344.1053.90New Orleans, La - Audubon Station JanFebMarAprMayJuneJulyAugSeptOct Nov DecAnnualPrecip (in)4.294.355.915.544.865.598.126.646.413.153.514.5962.96Reserve, La - Cooperative Observer JanFebMarAprMayJuneJulyAugSeptOct Nov DecAnnualPrecip (in)4.495.165.644.924.905.317.005.745.142.963.775.5460.57 WSES-FSAR-UNIT-3TABLE 2.3-36EXTREME MONTHY AND DAILY PRECIPITATION (INCHES)* (1947-1972) ANDMEAN NUMBER OF DAYS WITH RAIN (1949-1972)MOISANT INTERNATIONAL AIRPORT, NEW ORLEANS, LOUISIANAMaximumMinimumMaximum 24Mean Number ofMonthMonthlyYear MonthlyYear Hour AmountsYear Day Precipitation<0.01"Jan12.6219660.5419684.77195510Feb10.5619591.0219625.60196110Mar19.0919480.2419557.8719489April8.7819490.3319654.3519537May14.3319590.9919499.8619598June8.8719621.1219524.19195310July11.4619543.4519514.30196615 Aug11.7719552.0019523.06196913 Sept13-5319480.2419535.4619579 Oct6.4519590.0019522.5819606 Nov14.5819470.2119496.3819536 Dec10.7719471.4619583.94195210*These values may have been exceeded at other sites in the localityor at other times.

WSES-FSAR-UNIT-3TABLE 2.3-37MAXIMUM SHORT PERIOD PRECIPITATION (INCHES)AUDUBON STATION, NEW ORLEANS, LOUISIANA (1889-1969)MinutesHoursTime Period510153012361224Amount1.001.481.903.184.715.876.548.6212.7614.01Date2/54/254/254/254/254/254/159/64/154/15Year1955195319531953195319531953192919271927 WSES-FSAR-UNIT-3TABLE 2.3-38NUMBER OF PRECIPITATION OCCURENCE BY HOUR OF DAY FORMOISANT INTERNATIONAL AIRPORT (1951-1960)MONTH JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUALHour of DayEnding at:01003043332117887232236382902003343272118796242132422803003942272518131092321384431 04003944282618161491923383731050033453825151613102024334632060031394222161110122627265031070034383930201616202824234533080031393825221625192516254232 090033423526201627232616274133100031393423232537323418264337110037373424243448483127283641 120026403929324958674628343048130032423532355568685332293552140036363235325777675230303852150036404134425278685635293755160033523733394076635036233151 170032433834383562504427283447180030473629383159454225263945190034484329362645333623214041200034464128322036272821204137210030473119261826252418214133 2200334332181913211317212840302300334433192192110192234423124003446 31 22 18 9 13 8 18 19 34 39 29No. of Days(Total)128136 134 108 116 13719416714089 122 137 160 WSES-FSAR-UNIT-3TABLE 2.3-39ANNUAL AND SEASONAL PERCENTAGE FREQUENCY OFSURFACE WIND DIRECTION DURING PRECIPITATIONNAVAL AIR STATION - NEW ORLEANS, LOUISIANA (1949-1965)WinterSpringSummerFall AnnualN11.87.12.47.36.8NNE10.65.23.012.08.7NE12.25.85.511.38.5 ENE8.67.14.910.77.0E9.411.06.18.08.7ESE4.96.55.510.07.0 SE3.75.87.34.05.3 SSE2.09.14.93.33.6S4.910.48.54.07.0 SSW4.15.27.31.35.3 SW2.03.27.32.03.6 WSW0.81.34.32.01.9 W2.03.23.01.33.7 WNW1.62.62.42.01.9 NW4.55.83.72.03.7NNW8.23.91.84.03.7 CALM8.67.821.914.713.6 WSES-FSAR-UNIT-3TABLE 2.3-40PERCENT FREQUENCY OF ONSITE STABILITY CLASSESJULY 1972 - JUNE 1975 AND FEBRUARY 1977 - FEBRUARY 1978(N = NUMBER OF OBSERVATIONS)STABILITY CLASSMONTH A B C 0 E F G N January6.662.854.3537.6429.9211.457.132734February9.632.593.6026.9235.2414.047.972585 March11.422.433.1732.6236.519.184.672679 April21.412.633.0022.5028.9110.0311.532733 May18.162.102.2420.2533.1316.317.812765 June16.772.842.7322.9324.5918.3611.802713 July15.752.671.8422.1022.2120.9614.472882 August13.842.602.6421.1626.7818.6414.342580 September13.343.523.4020.6029.6616.5112.962616October17.982.151.2518.6226.2214.9218.852647November10.621.761.6826.3338.1912.199.232731 December10.92 3.14 3.31 29.49 33.05 11.77 8.32 2838ANNUAL13.892.612.7625.1330.3414.5310.7432503 WSES-FSAR-UNIT-3TABLE 2.3-41SEASONAL AND ANNUAL AVERAGEMORNING AND AFTERNOON MIXING HEIGHTSWATERFORD AREAMIXING HEIGHT ABOVE GROUND (meters)MorningAfternoonWinter500800 Spring6001000 Summer9001300 Fall7001200 Annual7001100 WSES-FSAR-UNIT-3TABLE 2.3-42WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JANUARY, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 182+------------- WIND SPEED (MPH) ------------+WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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---- ---- ---- ---- ---- ---- ---- ---- -----CALM0.000.000.000.000.000.000.000.000.00N0.000.001.101.651.650.000.000.004.40 NNE0.000.553.304.950.000.000.000.008.79 NE0.000.004.959.340.550.000.000.0014.84 ENE0.000.553.306.591.100.550.000.0012.09 E0.000.001.651.650.000.000.000.003.30ESE0.000.001.658.791.100.000.000.0011.54SE0.000.001.652.202.201.650.000.007.69 SSE0.000.002.752.201.100.550.000.006.59 S0.000.001.103.300.000.000.000.004.40 SSW0.000.000.550.550.000.550.000.001.65 SW0.000.000.002.201.100.550.000.003.85WSW0.000.000.000.001.100.000.000.001.10W0.000.001.100.550.000.000.000.001.65WNW0.000.550.551.650.000.000.000.002.75 NW0.000.003.853.850.000.000.000.007.69NNW0.000.002.203.302.200.000.000.007.69 TOTAL0.001.6529.6752.7512.093.850.000.00 THIS STABILITY CLASS ACCOUNTS FOR 6.66 PERCENT OF THE TOTAL2734 WSES-FSAR-UNIT-3TABLE 2.3-43WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD-3 7/72-6/75 & 2/77-2/78JANUARY, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS 78 +------------------ WIND SPEED (MPH) --------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------- ---- ---- ---- ---- ---- ----- ---- ----- -----CALM0.000.000.000.000.000.000.000.00 0.00N0.000.001.282.565.130.000.000.008.97 NNE0.000.001.283.851.280.000.000.006.41 NE0.001.285.136.411.280.000.000.0014.10ENE0.002.561.287.695.130.000.000.0016.67 E0.000.001.281.281.280.000.000.003.85ESE0.000.001.285.131.280.000.000.007.69 SE0.000.002.562.560.000.000.000.005.13 SSE0.000.001.281.280.000.000.000.002.56 S0.000.001.282.560.000.000.000.003.85 SSW0.000.000.002.560.000.000.000.002.56 SW0.000.000.002.560.000.000.000.002.56 WSW0.000.001.280.001.280.000.000.002.56W0.000.000.001.280.000.000.000.001.28WNW0.001.281.282.560.000.000.000.005.13NW0.000.002.566.413.850.000.000.0012.82NNW0.000.000.001.282.560.000.000.003.85TOTAL0.005.1321.7950.0023.080.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.85 PERCENT OF THE TOTAL 2734 WSES-FSAR-UNIT-3TABLE 2.3-44WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JANUARY, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 119+------------------- WIND SPEED (MPH) ---------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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----- ---- ---- ----- ----- ----- ----- ---- -----CALM0.000.000.000.000.000.000.000.000.00N0.000.841.681.685.040.000.000.009.24 NNE0.000.000.844.200.840.000.000.005.88 NE0.000.003.365.880.840.000.000.0010.08 ENE0.001.681.685.881.680.000.000.0010.92 E0.000.000.000.000.840.000.000.000.84 ESE0.000.000.004.200.840.000.000.005.04 SE0.000.001.681.682.520.000.000.005.88 SSE0.000.001.680.842.520.840.000.005.88 S0.000.001.680.840.000.000.000.002.52 SSW0.000.001.682.520.000.000.000.004.20 SW0.000.000.002.521.680.000.000.004.20 WSW0.000.000.000.000.840.000.000.000.84 W0.000.840.000.000.000.000.000.000.84 WNW0.000.000.001.681.680.000.000.003.36 NW0.000.000.0010.922.520.000.000.0013.45 NNW0.000.000.8411.764.200.000.000.0016.81TOTAL0.003.3615.1354.6226.050.840.000.00THIS STABILITY CLASS ACCOUNTS FOR4.35 PERCENT OF THE TOTAL 2734 WSES-FSAR-UNIT-3TABLE 2.3-45WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JANUARY, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 1029+---------------- WIND SPEED (MPH) -------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.100.000.000.000.000.000.000.000.10N0.000.101.654.181.940.390.000.008.26 NNE0.000.491.177.001.850.000.000.0010.50 NE0.000.291.944.571.260.000.000.008.07 ENE0.000.291.752.721.460.100.000.006.32 E0.000.000.291.360.190.100.000.001.94 ESE0.000.001.552.920.680.000.000.005.15 SE0.000.293.304.471.260.000.000.009.33 SSE0.000.191.752.431.070.390.000.005.83 S0.000.001.171.170.680.000.000.003.01 SSW0.000.290.872.040.870.100.000.004.18 SW0.000.000.491.550.870.000.000.002.92 WSW0.000.000.490.970.580.000.000.002.04 W0.000.190.490.680.390.000.190.001.94 WNW0.000.390.681.461.750.100.100.004.47 NW0.000.102.143.114.180.190.000.009.72 NNW0.000.581.659.233.980.780.000.0016.23TOTAL0.103.2121.3849.8523.032.140.290.00THIS STABILITY CLASS ACCOUNTS FOR37.64 PERCENT OF THE TOTAL 2734 WSES-FSAR-UNIT-3TABLE 2.3-46WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JANUARY, TOTAL FOR PERIODSTABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS 818+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.490.000.000.000.000.000.000.000.49N0.000.611.590.860.120.000.000.003.18 NNE0.000.494.162.810.120.000.000.007.58 NE0.000.866.364.890.370.000.000.0012.47 ENE0.000.246.973.670.370.000.000.0011.25 E0.000.492.573.061.220.000.000.007.33 ESE0.000.736.484.160.610.000.000.0011.98 SE0.000.616.723.420.980.000.000.0011.74 SSE0.001.105.871.710.490.240.000.009.41 S0.000.003.061.830.240.000.120.005.26 SSW0.000.121.961.340.120.000.000.003.55 SW0.000.371.100.730.370.000.000.002.57 WSW0.000.120.610.000.120.000.000.000.86 w0.000.120.491.220.120.000.000.001.96 WNW0.000.241.590.120.000.000.000.001.96 NW0.000.241.830.610.120.120.000.002.93 NNW0.000.612.202.200.370.120.000.005.50TOTAL0.496.9753.5532.645.750.490.120.00THIS STABILITY CLASS ACCOUNTS FOR29.92 PERCENT OF THE TOTAL2734 WSES-FSAR-UNIT-3TABLE 2.3-47WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JANUARY, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS 313+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM2.560.000.000.000.000.000.000.002.56N0.000.961.280.000.000.000.000.002.24 NNE0.001.286.710.960.000.000.000.008.95 NE0.001.6010.542.240.000.000.000.0014.38 ENE0.001.289.900.320.000.000.000.0011.50 E0.001.285.431.920.000.000.000.008.63 ESE0.003.197.350.000.000.000.000.0010.54 SE0.003.195.750.000.000.000.000.008.95 SSE0.000.965.430.000.000.000.000.006.39 S0.000.641.600.000.000.000.000.002.24 SSW0.001.282.240.960.000.000.000.004.47 SW0.001.280.640.000.000.000.000.001.92 WSW0.002.240.960.320.000.000.000.003.51 W0.000.961.920.000.000.000.000.002.88 WNW0.001.600.960.000.000.000.000.002.56 NW0.001.922.560.640.000.000.000.005.11 NNW0.001.920.640.640.000.000.000.003.19 TOTAL2.5625.5663.907.990.000.000.000.00 THIS STABILITY CLASS ACCOUNTS FOR11.45 PERCENT OF THE TOTAL2734 WSES-FSAR-UNIT-3TABLE 2.3-48WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JANUARY, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 195+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM18.460.000.000.000.000.000.000.0018.46N0.001.540.000.000.000.000.000.001.54 NNE0.002.561.540.000.000.000.000.004.10 NE0.004.625.640.000.000.000.000.0010.26 ENE0.002.567.180.000.000.000.000.009.74 E0.000.001.030.000.000.000.000.001.03 ESE0.000.511.030.000.000.000.000.001.54 SE0.004.101.540.000.000.000.000.005.64 SSE0.006.151.540.000.000.000.000.007.69 S0.003.080.510.000.000.000.000.003.59 SSW0.003.592.560.000.000.000.000.006.15 SW0.005.640.000.000.000.000.000.005.64 WSW0.004.100.000.000.000.000.000.004.10 W0.003.591.540.000.000.000.000.005.13 WNW0.003.080.000.000.000.000.000.003.08 NW0.004.621.540.000.000.000.000.006.15 NNW0.005.640.510.000.000.000.000.006.15TOTAL18.4655.3826.150.000.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR7.13 PERCENT OF THE TOTAL 2734 WSES-FSAR-UNIT-3TABLE 2.3-49WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 249+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.001.200.801.200.000.000.003.21NNE0.000.804.424.820.000.000.000.0010.04NE0.000.006.437.630.000.000.000.0014.06ENE0.000.000.801.200.000.000.000.002.01E0.000.000.400.800.000.000.000.001.20ESE0.000.000.804.420.800.000.000.006.02SE0.000.001.201.200.400.000.000.002.81SSE0.000.000.802.810.800.000.000.004.42 S0.000.002.012.410.800.000.000.005.22 SSW0.000.001.612.010.000.000.000.003.61 SW0.000.002.410.800.400.000.000.003.61 WSW0.000.000.401.201.611.610.000.004.82W0.000.400.402.813.210.000.000.006.83WNW0.000.002.412.011.610.000.000.006.02NW0.000.002.817.632.010.000.000.0012.45 NNW0.000.402.018.432.810.000.000.0013.65 TOTAL0.001.6130.1251.0015.661.610.000.00 THIS STABILITY CLASS ACCOUNTS FOR 9.63 PERCENT OF THE TOTAL 2585 WSES-FSAR-UNIT-3TABLE 2.3-50WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS 67+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.001.494.480.000.000.000.005.97 NNE0.000.000.001.490.000.000.000.001.49 NE0.000.008.967.460.000.000.000.0016.42 ENE0.000.001.492.990.001.490.000.005.97 E0.000.000.000.000.000.000.000.000.00ESE0.000.000.000.001.490.000.000.001.49SE0.000.000.002.991.490.000.000.004.48 SSE0.000.001.491.490.000.000.000.002.99 S0.000.001.491.494.480.000.000.007.46 SSW0.000.000.004.484.480.000.000.008.96 SW0.000.000.001.495.970.000.000.007.46WSW0.000.000.000.000.000.000.000.000.00W0.00.001.491.494.480.000.000.007.46WNW0.000.000.001.492.990.000.000.004.48 NW0.000.000.005.970.000.000.000.005.97NNW0.000.001.4913.434.480.000.000.0019.40 TOTAL0.000.0017.9150.7529.851.490.000.00 THIS STABILITY CLASS ACCOUNTS FOR2.59 PERCENT OF THE TOTAL2585 WSES-FSAR-UNIT-3TABLE 2.3-51WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 93+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.001.083.232.150.000.000.006.45 NNE0.000.002.154.300.000.000.000.006.45 NE0.000.004.306.451.080.000.000.0011.83 ENE0.000.003.230.000.001.080.000.004.30 E0.000.000.000.000.000.000.000.000.00 ESE0.000.000.001.081.080.000.000.002.15 SE0.000.000.000.000.000.000.000.000.00 SSE0.000.001.084.300.000.000.000.005.38 S0.000.000.004.302.151.080.000.007.53 SSW0.000.002.154.301.080.000.000.007.53 SW0.000.001.086.451.080.000.000.008.60 WSW0.000.000.001.084.300.000.000.005.38 W0.000.000.000.005.380.000.000.005.38 WNW0.000.001.081.082.150.000.000.004.30 NW0.000.004.302.151.080.000.000.007.53 NNW0.001.082.1512.901.080.000.000.0017.20 TOTAL0.001.0822.5851.6122.582.150.000.00 THIS STABILITY CLASS ACCOUNTS FOR 3.60 PERCENT OF THE TOTAL2585 WSES-FSAR-UNIT-3TABLE 2.3-52WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 696+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.140.000.000.000.000.000.000.000.14N0.000.571.584.022.300.140.000.008.62 NNE0.000.292.593.451.290.000.000.007.61 NE0.000.722.445.891.010.000.000.0010.06 ENE0.000.291.580.572.730.290.000.005.46 E0.000.140.141.290.140.000.000.001.72 ESE0.000.141.014.450.570.000.000.006.18 SE0.000.001.012.302.010.430.000.005.75 SSE0.000.001.872.871.720.860.000.007.33 S0.000.140.861.872.300.720.000.005.89 SSW0.000.001.012.012.440.720.000.006.18 SW0.000.001.011.581.440.140.000.004.17 WSW0.000.430.571.150.570.290.000.003.02 W0.000.290.431.441.720.000.000.003.88 WNW0.000.140.431.441.150.000.000.003.16 NW0.001.153.301.153.160.000.000.008.76 NNW0.000.293.455.323.020.000.000.0012.07TOTAL0.144.6023.2840.8027.593.590.000.00THIS STABILITY CLASS ACCOUNTS FOR 26.92 PERCENT OF THE TOTAL 2585 WSES-FSAR-UNIT-3TABLE 2.3-53WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 FEBRUARY, TOTAL FOR PERIODSTABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 911+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.1 7.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL---------------------------------------------------------------------------CALM0.110.000.000.000.000.000.000.000.11 N0.000.222.964.280.990.000.000.008.45 NNE0.000.442.851.650.110.000.000.005.05 NE0.000.331.981.870.000.000.000.004.17 ENE0.000.551.980.990.990.000.000.004.50 E0.000.000.551.100.110.000.000.001.76 ESE0.000.443.293.401.210.000.000.008.34 SE0.000.662.201.981.430.000.000.006.26 SSE0.001.322.854.172.630.000.440.00 11.42 S0.000.992.963.181.540.770.110.009.55 SSW0.000.661.760.550.770.550.110.004.39 SW0.000.551.321.870.770.220.000.004.72 WSW0.000.221.431.100.440.110.000.003.29 W0.000.111.101.540.550.110.000.003.40WNW0.000.221.320.880.660.000.000.003.07NW0.000.443.182.961.210.000.000.007.79 NNW0.000.665.275.712.090.000.000.00 13.72 TOTAL0.117.7936.9937.2115.481.760.660.00THIS STABILITY CLASS ACCOUNTS FOR 35.24 PERCENT OF THE TOTAL 2585 WSES-FSAR-UNIT-3TABLE 2.3-54DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 363+---------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.280.000.000.000.000.000.000.000.28N0.000.551.930.550.000.000.000.003.03NNE0.000.831.930.000.000.000.000.002.75NE0.002.204.410.000.000.000.000.006.61ENE0.002.203.861.100.000.000.000.007.16E0.000.281.931.650.000.000.000.003.86 ESE0.001.101.380.000.000.000.000.002.48 SE0.001.934.410.280.000.000.000.006.61 SSE0.002.487.990.280.000.000.000.0010.74 S0.001.656.060.280.000.000.000.007.99 SSW0.001.103.860.550.000.000.000.005.51 SW0.001.106.893.030.000.000.000.0011.02 WSW0.000.287.160.830.550.000.000.008.82W0.001.381.651.100.000.000.000.004.13 WNW0.001.101.930.280.280.000.000.003.58 NW0.001.652.751.380.280.000.000.006.06NNW0.001.384.413.580.000.000.000.009.37TOTAL0.2821.2162.5314.881.100.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 14.04 PERCENT OF THE TOTAL 2585 WSES-FSAR-UNIT-3TABLE 2.3-55WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 FEBRUARY, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 206+----------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM4.370.000.000.000.000.000.000.004.37 N0.000.970.970.000.000.000.000.001.94 NNE0.000.970.000.000.000.000.000.000.97 NE0.005.342.910.000.000.000.000.008.25 ENE0.001.942.430.000.000.000.000.004.37 E0.000.490.000.000.000.000.000.000.49 ESE0.001.460.000.000.000.000.000.001.46 SE0.001.941.940.000.000.000.000.003.88 SSE0.008.746.800.970.000.000.000.0016.50 S0.0012.144.370.000.000.000.000.0016.50 SSW0.004.852.910.000.000.000.000.007.77 SW0.003.402.430.000.000.000.000.005.83 WSW0.005.830.970.490.000.000.000.007.28 W0.005.831.460.000.000.000.000.007.28WNW0.003.400.970.490.000.000.000.004.85NW0.003.882.430.000.000.000.000.006.31 NNW0.001.940.000.000.000.000.000.001.94 TOTAL4.3763.1130.581.940.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 7.97 PERCENT OF THE TOTAL 2585 WSES-FSAR-UNIT-3TABLE 2.3-56WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75&2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 306+---------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.330.000.000.000.000.000.000.000.33N0.000.000.330.330.650.000.000.001.31 NNE0.000.331.315.562.940.000.000.0010.13 NE0.000.335.565.230.330.000.000.0011.44 ENE0.000.003.927.190.980.000.000.0012.09 E0.000.330.001.310.330.000.000.001.96 ESE0.000.001.964.583.270.000.000.009.80 SE0.000.000.653.922.610.000.000.007.19 SSE0.000.981.314.253.591.310.000.0011.44 S0.000.000.331.962.610.000.000.004.90 SSW0.000.650.331.963.270.330.000.006.54 SW0.000.000.651.633.270.000.000.005.56 WSW0.000.000.331.631.310.000.000.003.27 W0.000.330.000.651.630.000.000.002.61 WNW0.000.000.330.650.000.000.000.000.98 NW0.000.330.982.610.000.000.000.003.92 NNW0.000.000.984.580.980.000.000.006.54 TOTAL0.333.2718.9548.0427.781.630.000.00THIS STABILITY CLASS ACCOUNTS FOR 11.42 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-57WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTIONNUMBER OF OBSERVATIONS 65+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.000.000.000.000.000.000.000.00 NNE0.000.001.547.693.080.000.00.0.0012.31 NE0.000.001.541.541.540.000.000.004.62 ENE0.000.001.546.153.080.000.000.0010.77 E0.000.001.544.620.000.000.000.006.15 ESE0.000.003.083.084.620.000.000.0010.77 SE0.000.000.000.006.151.540.000.007.69 SSE0.000.001.543.081.547.690.000.0013.85 S0.000.000.000.003.080.000.000.003.08 SSW0.000.000.001.544.620.000.000.006.15 SW0.000.001.544.624.620.000.000.0010.77 WSW0.000.000.000.000.000.000.000.000.00 W0.000.001.541.543.080.000.000.006.15 WNW0.000.000.001.541.540.000.000.003.08 NW0.000.000.000.000.000.000.000.000.00 NNW0.000.000.001.543.080.000.000.004.62 TOTAL0.000.0013.8536.9240.009.230.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.43 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-58WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 85+----------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.000.001.182.350.000.000.003.53NNE0.000.001.181.181.180.000.000.003.53NE0.000.002.352.352.351.180.000.008.24ENE0.001.182.353.531.180.000.000.008.24E0.000.000.000.000.000.000.000.000.00 ESE0.000.000.003.531.180.000.000.004.71 SE0.000.000.003.535.881.180.000.0010.59 SSE0.000.001.181.184.715.880.000.0012.94 S0.000.000.001.182.350.000.000.003.53 SSW0.000.002.350.003.530.000.000.005.88 SW0.000.001.187.067.060.000.000.0015.29 WSW0.000.003.530.004.710.000.000.008.24W0.000.000.001.182.350.000.000.003.53 WNW0.000.000.000.003.530.000.000.003.53 NW0.000.001.180.000.000.000.000.001.18NNW0.000.001.182.353.530.000.000.007.06TOTAL0.001.1816.4728.2445.888.240.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.17 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-59WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS DPERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 874+---------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.340.000.000.000.000.000.000.000.34N0.000.000.231.830.570.000.000.002.63NNE0.000.230.572.521.260.230.000.004.81NE0.000.111.602.401.830.110.000.006.06ENE0.000.001.263.891.370.000.000.006.52 E0.000.001.491.600.230.000.000.003.32 ESE0.000.001.953.202.290.570.000.008.01 SE0.000.111.495.616.981.600.110.0015.90SSE0.000.231.263.557.092.520.570.0015.22S0.000.231.033.204.461.140.110.0010.18SSW0.000.001.032.632.750.230.110.006.75SW0.000.110.461.721.600.110.000.004.00WSW0.000.000.801.031.030.230.000.003.09W0.000.110.340.690.340.000.000.001.49 WNW0.000.000.341.261.370.000.000.002.97 NW0.000.000.571.031.490.000.000.003.09NNW0.000.001.372.631.600.000.000.005.61TOTAL0.341.1415.7938.7936.276.750.920.00THIS STABILITY CLASS ACCOUNTS FOR 32.62 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-60WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 978+----------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.510.000.000.000.000.000.000.000.51N0.000.411.021.641.020.100.000.004.19 NNE0.000.311.332.760.410.100.000.004.91 NE0.000.314.704.501.020.000.000.0010.53 ENE0.000.312.974.601.330.000.000.009.20 E0.000.001.941.530.000.000.000.003.48 ESE0.000.415.013.371.530.000.000.0010.33 SE0.000.515.524.911.330.410.000.0012.68 SSE0.000.513.274.911.530.510.200.0010.94 S0.000.103.074.602.560.410.000.0010-74 SSW0.000.722.663.270.510.200.000.007.36 SW0.000.411.332.040.100.100.000.003.99 WSW0.000.200.721.740.200.000.000.002.86 W0.000.001.120.410.100.000.000.001.64 WNW0.000.310.720.200.100.000.000.001.33 NW0.000.200.510.610.100.000.000.001.43 NNW0.000.411.531.740.200.000.000.003.89 TOTAL0.515.1137.4242.8412.071.840.200.00THIS STABILITY CLASS ACCOUNTS FOR 36.51 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-61WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 246+------------------------------ WIND SPEED (MPH) --------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM4.070.000.000.000.000.000.000.004.07N0.000.813.661.220.000.000.000.005.69 NNE0.001.632.440.810.000.000.000.004.88 NE0.002.033.660.811.220.000.000.007.72 ENE0.002.037.321.631.220.000.000.0012.20 E0.000.812.031.220.000.000.000.004.07 ESE0.001.636.100.810.000.000.000.008.54 SE0.002.035.280.410.000.000.000.007.72 SSE0.001.6310.981.220.000.000.000.0013.82 S0.001.635.280.810.000.000.000.007.72 SSW0.000.412.850.000.000.000.000.003.25 SW0.000.812.441.220.000.000.000.004.47 WSW0.000.410.810.000.000.000.000.001.22 W0.001.221.630.000.000.000.000.002.85 WNW0.001.631.220.000.000.000.000.002.85 NW0.001.632.440.410.000.000.000.004.47 NNW0.001.632.850.000.000.000.000.004.47 TOTAL4.0721.9560.9810.572.440.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 9.18 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-62WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MARCH, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 125+----------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM16.800.000.000.000.000.000.000.0016.80N0.003.203.200.000.000.000.000.006.40 NNE0.004.000.000.800.000.000.000.004.80 NE0.004.002.400.000.000.000.000.006.40 ENE0.003.203.200.000.000.000.000.006.40 E0.002.400.800.000.000.000.000.003.20 ESE0.000.802.400.000.000.000.000.003.20 SE0.007.204.800.000.000.000.000.0012.00 SSE0.003.204.000.800.000.000.000.008.00 S0.003.202.400.000.000.000.000.005.60 SSW0.003.200.000.000.000.000.000.003.20 SW0.003.200.800.000.000.000.000.004.00 WSW0.003.200.000.000.000.000.000.003.20 W0.003.202.400.000.000.000.000.005.60 WNW0.000.000.000.000.000.000.000.000.00 NW0.004.002.400.000.800.000.000.007.20 NNW0.001.600.801.600.000.000.000.004.00 TOTAL16.8049.6029.603.200.800.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 4.67 PERCENT OF THE TOTAL 2679 WSES-FSAR-UNIT-3TABLE 2.3-63WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 APRIL, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 585+----------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.171.711.030.170.000.000.003.08NNE0.000.514.443.080.170.000.000.008.21NE0.000.176.504.440.510.170.000.0011.79 ENE0.000.173.592.220.000.000.000.005.98 E0.000.000.510.510.170.000.000.001.20ESE0.000.171.547.184.790.000.000.0013.68SE0.000.170.345.475.301.030.170.0012.48 SSE0.000.001.203.763.931.200.000.0010.09 S0.000.000.341.882.220.850.000.005.30 SSW0.000.001.201.880.850.340.000.004.27 SW0.000.171.030.340.000.000.000.001.54WSW0.000.170.850.510.510.000.000.002.05 W0.000.000.341.882.220.000.000.004.44 WNW0.000.000.342.392.560.000.000.005.30NW0.000.171.202.050.850.000.000.004.27NNW0.000.172.052.052.050.000.000.006.32TOTAL0.002.0527.1840.6826.323.590.170.00THIS STABILITY CLASS ACCOUNTS FOR 21.41 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-64WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78APRIL, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 72+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.000.000.000.000.000.000.000.00 NNE0.000.002.780.000.000.000.000.002.78 NE0.000.002.780.000.000.000.000.002.78 ENE0.000.002.781.390.000.000.000.004.17 E0.001.390.001.395.560.000.000.008.33 ESE0.000.000.004.171.390.000.000.005.56 SE0.000.000.002.7812.501.390.000.0016.67 SSE0.000.000.0011.112.780.000.000.0013.89 S0.000.000.002.782.781.390.000.006.94 SSW0.000.001.392.784.172.780.000.0011.11 SW0.000.000.001.390.000.000.000.001.39 WSW0.000.004.170.000.000.000.000.004.17 W0.000.001.391.390.000.000.000.002.78 WNW0.000.001.394.171.390.000.000.006.94 NW0.000.001.390.002.781.390.000.005.56 NNW0.000.005.561.390.000.000.000.006.94 TOTAL0.001.3923.6134.7233.336.940.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.63 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-65WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 APRIL, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 82+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.000.000.000.000.000.000.000.00NNE0.000.001.220.000.000.000.000.001.22NE0.000.001.220.000.000.000.000.001.22 ENE0.000.002.441.220.000.000.000.003.66 E0.000.000.002.440.000.000.000.002.44ESE0.000.000.008.543.660.000.000.0012.20SE0.000.000.0010.989.760.000.000.0020.73 SSE0.000.001.226.103.661.220.000.0012.20 S0.000.000.001.224.883.660.000.009.76 SSW0.000.000.004.880.001.220.000.006.10 SW0.000.001.220.000.000.000.000.001.22WSW0.000.000.001.220.000.000.000.001.22 W0.002.441.221.223.660.000.000.008.54 WNW0.000.000.002.443.660.000.000.006.10NW0.001.223.660.002.440.000.000.007.32NNW0.001.221.223.660.000.000.000.006.10TOTAL0.004.8813.4143.9031.716.100.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.00 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-66WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 APRIL, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 615+---------------------------- WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.160.000.000.000.000.000.000.000.16 N0.000.161.460.980.160.000.000.002.76 NNE0.000.491.301.460.810.000.000.004.07 NE0.000.332.442.110.810.000.000.005.69 ENE0.000.811.791.630.810.000.000.005.04 E0.000.160.812.280.650.000.000.003.90 ESE0.000.002.1111.065.370.160.000.0018.70 SE0.000.000.816.025.850.490.000.0013.17 SSE0.000.331.146.024.390.810.000.0012.68 S0.000.160.495.534.880.490.000.0011.54 SSW0.000.160.981.791.140.000.000.004.07 SW0.000.330.650.980.330.000.000.002.28 WSW0.000.000.490.490.000.000.000.000.98 W0.000.000.810.650.650.000.000.002.11WNW0.000.490.653.251.140.000.000.005.53NW0.000.491.301.300.810.000.000.003.90 NNW0.000.000.981.950.490.000.000.003.41 TOTAL0.163.9018.2147.4828.291.950.000.00THIS STABILITY CLASS ACCOUNTS FOR 22.50 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-67WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78APRIL, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 790+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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-------CALM1.140.000.000.000.000.000.000.001.14N0.000.130.253.040.000.000.000.003.42NNE0.000.252.032.780.380.000.000.005.44 NE0.000.253.423.670.760.000.000.008.10ENE0.000.511.522.660.890.000.000.005.57E0.000.132.151.650.510.000.000.004.43 ESE0.000.516.585.321.010.130.000.0013.54 SE0.000.136.847.222.910.510.130.0017.72 SSE0.000.633.924.811.270.000.000.0010.63 S0.000.513.042.911.010.000.000.007.47 SSW0.000.381.390.130.250.000.000.002.15 SW0.000.000.380.250.000.000.000.000.63 WSW0.000.380.380.130.000.130.000.001.01 W0.000.251.011.010.250.000.000.002.53 WNW0.000.512.411.270.760.000.000.004.94 NW0.001.141.651.771.270.000.000.005.82NNW0.000.381.273.540.250.000.000.005.44TOTAL1.146.0838.2342.1511.520.760.130.00THIS STABILITY CLASS ACCOUNTS FOR 28.91 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-68WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78APRIL, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 274+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM3.650.000.000.000.000.000.000.003.65N0.000.002.920.360.000.000.000.003.28 NNE0.001.822.190.000.000.000.000.004.01 NE0.001.824.740.73'0.000.000.000.007.30 ENE0.001.828.760.000.000.000.000.0010.58 E0.000.732.191.090.000.000.000.004.01 ESE0.003.288.390.730.730.360.000.0013.50 SE0.002.199.491.091.460.000.360.0014.60 SSE0.001.098.390.000.730.000.000.0010.22 S0.000.731.820.000.360.000.000.002.92 SSW0.001.821.460.000.000.000.000.003.28 SW0.001.821.460.366.000.000.000.003.65 WSW0.001.462.550.000.000.000.000.004.01 W0.000.364.010.360.000.000.000.004.74 WNW0.002.552.190.000.000.000.000.004.74 NW0.002.190.730.000.000.000.000.002.92 NNW0.000.731.820.000.000.000.000.002.55 TOTAL3.6524.4563.144.743.280.360.360.00THIS STABILITY CLASS ACCOUNTS FOR 10.03 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-69WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 APRIL, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 315+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM17.460.000.000.000.000.000.000.0017.46N0.000.630.000.000.000.000.000.000.63NNE0.003.811.270.000.000.000.000.005.08NE0.002.540.630.000.000.000.000.003.17 ENE0.003.811.270.000.000.000.000.005.08 E0.003.810.951.590.000.000.000.006.35ESE0.001.594.443.490.950.000.000.0010.48SE0.003.173.170.320.000.000.000.006.67 SSE0.002.222.220.320.000.000.000.004.76 S0.004.130.320.000.000.000.000.004.44 SSW0.001.270.000.000.000.000.000.001.27 SW0.004.760.630.000.000.000.000.005.40WSW0.004.760.950.000.000.000.000.005.71 W0.004.440.630.000.000.000.000.005.08 WNW0.006.351.270.000.000.000.000.007.62NW0.003.811.900.000.000.000.000.005.71NNW0.004.440.630.000.000.000.000.005.08TOTAL17.4655.5620.325.710.950.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 11.53 PERCENT OF THE TOTAL 2733 WSES-FSAR-UNIT-3TABLE 2.3-70WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 MAY, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 502+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.001.590.200.000.000.000.001.79NNE0.000.003.595.380.400.000.000.009.36NE0.000.209.166.570.000.000.000.0015.94 ENE0.000.003.391.200.200.000.000.004.78 E0.000.000.801.000.000.000.000.001.79ESE0.000.202.793.980.200.000.000.007.17SE0.000.001.594.182.590.400.000.008.76 SSE0.000.003.195.583.980.200.000.0012.95 S0.000.401.001.791.790.200.000.005.18 SSW0.000.001.005.785.580.200.000.0012.55 SW0.000.000.404.582.190.000.000.007.17WSW0.000.000.601.390.400.000.000.002.39 W0.000.000.401.200.400.000.000.001.99 WNW0.000.000.600.600.000.000.000.001.20NW0.000.001.001.390.000.000.000.002.39NNW0.000.002.791.790.000.000.000.004.58TOTAL0.000.8033.8646.6117.731.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 18.16 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-71WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MAY, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 58+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.005.170.000.000.000.000.005.17 NNE0.000.003.451.720.000.000.000.005.17 NE0.000.005.171.720.000.000.000.006.90 ENE0.000.006.903.450.000.000.000.0010.34 E0.000.000.001.720.000.000.000.001.72 ESE0.000.000.003.450.000.000.000.003.45 SE0.000.000.001.721.720.000.000.003.45 SSE0.000.006.903.4512.070.000.000.0022.41 S0.000.001.723.450.000.000.000.005.17 SSW0.000.001.726.905.170.000.000.0013.79 SW0.000.001.725.171.720.000.000.008.62 WSW0.000.000.001.720.000.000.000.001.72 W0.000.000.001.720.000.000.000.001.72 WNW0.000.001.720.000.000.000.000.001.72 NW0.000.000.000.000.000.000.000.000.00 NNW0.000.006.901.720.000.000.000.008.62 TOTAL0.000.0041.3837.9320.690.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.10 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-72WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 MAY, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 62+------------------------------ WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.006.450.000.000.000.000.006.45NNE0.000.003.231.610.000.000.000.004.84NE0.000.003.233.230.000.000.000.006.45 ENE0.000.006.454.840.000.000.000.0011.29 E0.000.000.000.000.000.000.000.000.00ESE0.000.003.234.841.610.000.000.009.68SE0.000.000.003.230.000.000.000.003.23 SSE0.000.001.6111.296.450.000.000.0019.35 S0.000.004.844.840.000.000.000.009.68 SSW0.000.001.616.450.000.000.000.008.06 SW0.000.000.006.451.610.000.000.008.06WSW0.000.001.613.230.000.000.000.004.84 W0.000.000.001.610.000.000.000.001.61 WNW0.000.001.610.000.000.000.000.001.61NW0.000.000.000.000.000.000.000.000.00NNW0.000.003.231.610.000.000.000.004.84TOTAL0.000.0037.1053.239.680.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.24 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-73WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 MAY, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 560+----------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM0.540.000.000.000.000.000.000.000.54N0.000.183.040.180.000.000.000.003.39NNE0.000.892.141.790.180.000.000.005.00NE0.001.617.501.960.180.000.000.0011.25 ENE0.000.713.933.750.180.000.000.008.57 E0.000.181.791.070.180.000.000.003.21 ESE0.000.001.794.461.430.000.000.007.68 SE0.000.182.867.142.680.000.000.0012.86 SSE0.000.364.118.572.140.000.000.0015.18 S0.000.362.684.461.070.000.000.008.57SSW0.000.360.893.041.610.000.000.005.89 SW0.000.001.253.570.000.000.000.004.82WSW0.000.360.710.180.180.000.000.001.43W0.000.181.250.890.180.000.000.002.50 WNW0.000.181.430.540.000.000.000.002.14 NW0.000.711.960.360.000.000.000.003.04 NNW0.000.362.680.890.000.000.000.003.93 TOTAL0.546.6140.0042.8610.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 20.25 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-74WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 MAY, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 916+------------------------------ WIND SPEED (MPH) ------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-----------------------------------------------------------------------CALM0.980.000.000.000.000.000.000.000.98N0.000.551.640.870.220.000.000.003.28NNE0.000.442.731.860.330.000.000.005.35NE0.001.312.291.200.000.000.000.004.80 ENE0.000.663.821.641.090.000.000.007.21 E0.000.001.751.750.110.000.000.003.60ESE0.000.444.263.930.440.000.000.009.06SE0.000.558.085.791.200.110.000.0015.72 SSE0.001.647.313.170.760.000.000.0012.88 S0.001.206.331.860.440.000.000.009.83 SSW0.000.873.060.870.110.000.110.005.02 SW0.000.442.400.550.000.000.000.003.38WSW0.000.442.180.660.000.000.000.003.28 W0.000.552.290.000.000.000.000.002.84 WNW0.000.762.400.440.110.000.000.003.71NW0.000.872.950.000.110.000.000.003.93NNW0.000.662.401.860.220.000.000.005.13TOTAL0.9811.3555.9026.425.130.110.110.00THIS STABILITY CLASS ACCOUNTS FOR 33.13 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-75WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 MAY, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS 451+---------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM6.430.000.000.000.000.000.000.006.43N0.003.771.330.000.000.000.000.005.10NNE0.001.552.440.220.000.000.000.004.21NE0.001.551.770.000.000.000.000.003.33 ENE0.001.552.000.670.000.000.000.004.21 E0.000.440.670.000.000.000.000.001.11 ESE0.001.553.990.000.220.000.000.005.76 SE0.002.667.760.670.000.000.000.0011.09 SSE0.003.558.650.220.000.000.220.0012.64 S0.004.2110.640.220.220.000.000.0015.30SSW0.002.444.210.000.000.000.000.006.65 SW0.002.880.000.220.220.000.000.003.33WSW0.002.003.770.000.000.000.000.005.76W0.001.771.550.000.000.000.000.003.33 WNW0.003.101.770.000.220.000.000.005.10 NW0.001.771.110.000.000.000.000.002.88 NNW0.002.441.110.220.000.000.000.003.77 TOTAL6.4337.2552.772.440.890.000.220.00THIS STABILITY CLASS ACCOUNTS FOR 16.31 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-76WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78MAY, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 216+----------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM21.300.000.000.000.000.000.000.0021.30N0.002.781.850.000.000.000.000.004.63 NNE0.001.850.930.000.000.000.000.002.78 NE0.003.240.000.000.000.000.000.003.24 ENE0.000.460.460.000.000.000.000.000.93 E0.000.460.000.000.000.000.000.000.46 ESE0.001.390.000.460.460.000.000.002.31 SE0.004.171.391.850.000.000.460.007.87 SSE0.004.632.310.000.000.000.000.006.94 S0.003.705.560.460.000.000.000.009.72 SSW0.005.563.240.000.000.000.000.008.80 SW0.004.633.240.000.000.000.000.007.87 WSW0.003.702.310.000.000.000.000.006.02 W0.002.310.930.000.000.000.000.003.24 WNW0.005.560.000.000.000.000.000.005.56 NW0.003.240.930.000.000.000.000.004.17 NNW0.004.170.000.000.000.000.000.004.17 TOTAL21.3051-8523.152.780.460.000.460.00THIS STABILITY CLASS ACCOUNTS FOR 7.81 PERCENT OF THE TOTAL 2765 WSES-FSAR-UNIT-3TABLE 2.3-77WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JUNE, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 455+----------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.220.000.000.000.000.000.000.000.22N0.000.221.101.320.440.000.000.003.08NNE0.000.446.153.080.880.000.000.0010.55NE0.000.2212.095.491.320.000.000.0019.12 ENE0.000.004.182.420.220.000.000.006.81 E0.000.000.440.440.220.000.000.001.10ESE0.000.220.660.660.000.000.000.001.54SE0.000.000.664.180.880.000.000.005.71 SSE0.000.665.277.031.980.000.000.0014.95 S0.001.322.642.640.660.000.000.007.25 SSW0.000.222.641.100.000.000.000.003.96 SW0.000.882.422.640.000.000.000.005.93WSW0.000.221.761.320.000.000.000.003.30 W0.000.441.101.100.000.000.000.002.64 WNW0.000.000.660.880.000.000.000.001.54NW0.000.003.960.440.220.000.000.004.62NNW0.000.885.051.540.220.000.000.007.69TOTAL0.225.7150.7736.267.030.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 16.77 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-78WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JUNE, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 77+----------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.006.490.001.300.000.000.007.79 NNE0.000.003.901.301.300.000.000.006.49 NE0.001.3010.390.001.300.000.000.0012.99 ENE0.000.005.192.600.000.000.000.007.79 E0.000.000.000.000.000.000.000.000.00 ESE0.000.001.300.000.000.000.000.001.30 SE0.000.001.301.300.000.000.000.002.60 SSE0.000.000.0011.695.190.000.000.0016.88 S0.000.001.306.490.000.000.000.007.79 SSW0.000.001.300.001.300.000.000.002.60 SW0.000.006.495.190.000.000.000.0011.69 WSW0.000.002.601.300.000.000.000.003.90 W0.000.005.190.001.300.000.000.006.49 WNW0.002.600.002.600.000.000.000.005.19 NW0.000.000.000.000.000.000.000.000.00 NNW0.000.005.191.300.000.000.000.006.49 TOTAL0.003.9050.6533.7711.690.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.84 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-79WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JUNE, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 74+--------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.001.350.000.000.000.000.001.35NNE0.001.350.001.350.000.000.000.002.70NE0.000.005.411.350.000.000.000.006.76 ENE0.000.008.111.350.000.000.000.009.46 E0.000.005.410.000.000.000.000.005.41ESE0.000.005.411.350.000.000.000.006.76SE0.000.001.352.700.000.000.000.004.05 SSE0.000.002.702.701.351.350.000.008.11 S0.000.005.414.050.000.000.000.009.46 SSW0.000.001.352.701.350.000.000.005.41 SW0.000.006.760.000.000.000.000.006.76WSW0.001.356.761.350.000.000.000.009.46 W0.000.000.001.351.350.000.000.002.70 WNW0.000.000.005.410.000.000.000.005.41NW0.001.352.700.000.000.000.000.004.05NNW0.001.359.461.350.000.000.000.0012.16TOTAL0.005.4162.1627.034.051.350.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.73 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-80WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JUNE, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 622+---------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.320.000.000.000.000.000.000.000.32N0.001.132.730.960.480.000.000.005.31NNE0.001.932.570.480.320.000.000.005.31NE0.001.453.380.800.000.000.000.005.63 ENE0.001.135.311.130.160.000.000.007.72 E0.000.321.130.320.000.000.000.001.77ESE0.000.322.410.800.000.000.000.003.54SE0.000.963.053.380.320.000.000.007.72 SSE0.000.323.383.543.540.000.000.0010.77 S0.000.646.116.751.130.000.000.0014.63 SSW0.000.324.183.050.160.000.000.007.72 SW0.000.484.985.140.320.000.000.0010.93WSW0.000.642.251.610.160.000.000.004.66 W0.000.321.131.130.000.000.000.002.57 WNW0.001.450.480.320.000.000.000.002.25NW0.000.481.610.800.160.000.000.003.05NNW0.001.453.700.960.000.000.000.006.11TOTAL0.3213.3448.3931.196.750.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 22.93 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-81WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JUNE, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 667+--------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.650.000.000.000.000.000.000.001.65N0.001.203.302.700.150.000.000.007.35 NNE0.001.351.800.600.150.150.000.004.05 NE0.000.751.800.450.000.000.000.003.00 ENE0.000.903.000.900.000.000.000.004.80 E0.001.201.800.300.000.000.000.003.30 ESE0.001.354.500.150.000.000.000.006.00 SE0.001.506.304.050.150.000.000.0011.99 SSE0.001.806.752.700.150.000.000.0011.39 S0.001.954.051.650.150.000.000.007.80 SSW0.002.553.602.400.000.000.000.008.55 SW0.000.753.601.200.000.000.000.005.55 WSW0.001.653.150.450.300.000.000.005.55 W0.001.050.900.900.000.000.000.002.85 WNW0.001.801.800.600.000.000.000.004.20 NW0.002.402.700.300.000.000.000.005.40 NNW0.001.653.601.200.150.000.000.006.60 TOTAL1.6523.8452.6220.541.200.150.000.00THIS STABILITY CLASS ACCOUNTS FOR 24.59 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-82WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JUNE, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 498+----------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM4.620.000.000.000.000.000.000.004.62N0.001.001.610.600.000.000.000.003.21 NNE0.002.010.800.000.000.000.000.002.81 NE0.001.201.810.200.000.000.000.003.21 ENE0.002.010.800.200.000.000.000.003.01 E0.000.600.200.000.000.000.000.000.80 ESE0.001.001.410.200.000.000.000.002.61 SE0.002.615.020.400.000.000.000.008.03 SSE0.004.427.030.800.000.000.000.0012.25 S0.005.829.640.000.000.000.000.0015.46 SSW0.004.629.640.200.200.000.000.0014.66 SW0.003.414.820.800.000.000.000.009.04 WSW0.003.613.210.200.000.000.000.007.03 W0.002.412.210.000.000.000.000.004.62 WNW0.001.410.600.000.000.000.000.002.01 NW0.001.612.610.000.000.000.000.004.22 NNW0.001.411.000.000.000.000.000.002.41 TOTAL4.6239.1652.413.610.200.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 18.36 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-83WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JUNE, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 320+---------------- ----------- WIND SPEED (MPH) ------------- ----------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM10.000.000.000.000.000.000.000.0010.00N0.000.000.000.000.000.000.000.000.00 NNE0.000.310.000.000.000.000.000.000.31 NE0.000.940.310.000.000.000.000.001.25 ENE0.000.630.000.000.000.000.000.000.63 E0.000.940.000.000.000.000.000.000.94 ESE0.002.500.000.000.000.000.000.002.50 SE0.004.382.190.000.000.000.000.006.56 SSE0.005.943.750.000.000.000.000.009.69 S0.006.8811.250.000.000.000.000.0018.13 SSW0.006.888.750.000.000.000.000.0015.63 SW0.007.506.250.000.000.000.000.0013.75 WSW0.006.561.880.000.000.000.000.008.44 W0.002.811.560.000.000.000.000.004.38 WNW0.004.380.000.000.000.000.000.004.38 NW0.001.880.630.000.000.000.000.002.50 NNW0.000.630.310.000.000.000.000.000.94 TOTAL10.0053.1336.880.000.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 11.80 PERCENT OF THE TOTAL 2713 WSES-FSAR-UNIT-3TABLE 2.3-84WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JULY, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 454+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.001.983.520.220.000.000.000.005.73 NNE0.000.445.073.740.000.000.000.009.25 N'E0.000.226.391.980.440.000.000.009.03 ENE0.000.664.412.200.440.000.000.007.71 E0.000.000.880.880.000.000.000.001.76 ESE0.000.441.761.540.000.000.000.003.74 SE0.001.101.760.880.000.000.000.003.74 SSE0.000.664.411.760.000.000.000.006.83 S0.000.663.741.100.220.000.000.005.73 SSW0.000.223.301.760.000.000.000.005.29 SW0.000.222.202.200.000.000.000.004.63 WSW0.000.661.541.540.000.000.000.003.74 W0.000.443.962.860.220.000.000.007.49 WNW0.000.443.961.320.000.000.000.005.73 NW0.001.545.732.200.000.000.000.009.47 NNW0.001.328.370.440.000.000.000.0010.13 TOTAL0.0011.0161.0126.651.320.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 15.75 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-85WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JULY, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 77+----------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.005.193.900.000.000.000.000.009.09NNE0.000.003.900.000.000.000.000.003.90NE0.001.305.192.600.000.000.000.009.09 ENE0.000.001.305.190.000.000.000.006.49 E0.000.003.902.601.300.000.000.007.79ESE0.000.002.601.300.000.000.000.003.90SE0.001.302.602.600.000.000.000.006.49 SSE0.000.003.901.300.000.000.000.005.19 S0.000.001.300.000.000.000.000.001.30 SSW0.001.303.906.490.000.000.000.0011.69 SW0.000.002.605.190.000.000.000.007.79WSW0.000.001.305.190.000.000.000.006.49 W0.001.301.301.300.000.000.000.003.90 WNW0.001.301.301.300.000.000.000.003.90NW0.001.306.491.300.000.000.000.009.09NNW0.000.001.301.301.300.000.000.003.90TOTAL0.0012.9946.7537.662.600.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.67 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-86WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JULY, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 53+----------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.003.770.000.000.000.000.003.77 NNE0.003.770.000.000.000.000.000.003.77 NE0.000.0013.213.770.000.000.000.0016.98 ENE0.000.003.771.890.000.000.000.005.66 E0.000.000.000.000.000.000.000.000.00 ESE0.000.000.000.000.000.000.000.000.00 SE0.001.893.771.890.000.000.000.007.55 SSE0.000.005.665.660.000.000.000.0011.32 S0.000.001.891.890.000.000.000.003.77 SSW0.000.003.773.770.000.000.000.007.55 SW0.000.003.771.890.000.000.000.005.66 WSW0.001.893.773.770.000.000.000.009.43 W0.000.003.773.770.000.000.000.007.55 WNW0.001.893.771.891.890.000.000.009.43 NW0.001.893.770.000.000.000.000.005.66 NNW0.000.001.890.000.000.000.000.001.89 TOTAL0.0011.3256.6030.191.890.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 1.84 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-87WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JULY, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 637+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM0.310.000.000.000.000.000.000.000.31N0.001.571.570.310.000.000.000.003.45NNE0.001.571.731.730.000.000.000.005.02NE0.001.102.981.100.160.000.000.005.34 ENE0.002.833.921.570.000.000.000.008.32 E0.001.262.350.780.000.000.000.004.40ESE0.003.774.081.570.160.000.000.009.58SE0.002.985.972.350.000.000.000.0011.30 SSE0.001.103.922.350.000.000.000.007.38 S0.000.632.672.040.000.000.000.005.34 SSW0.000.474.241.880.000.000.000.006.59 SW0.000.475.651.260.160.000.000.007.54WSW0.000.314.081.880.000.000.000.006.28 W0.000.632.671.100.000.000.000.004.40 WNW0.001.572.350.780.000.000.000.004.71NW0.001.103.920.160.000.000.000.005.18NNW0.000.783.450.470.160.000.000.004.87TOTAL0.3122.1455.5721.350.630.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 22.10 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-88Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 37/72-6/75 & 2/77-2/78 JULY, TOTAL FOR PERIODSTABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTIONNUMBER OF OBSERVATIONS = 640+---------------------------------- WIND SPEED (MPH) ------------------------------+WINDDIRECTION CALM 0.8 3.0 3.1 7.0 7.1 12.0 12.1 18.0 18.1 24.0 24.1 32.0ABOVE 32.0TOTALCALM3.440.000.000.000.000.000.000.003.44N0.001.410.780.780.000.000.000.002.97 NNE0.001.562.970.940.000.000.000.005.47 NE0.001.561.721.410.000.000.000.004.69 ENE0.002.505.472.970.160.000.000.0011.09 E0.001.883.280.310.000.000.000.005.47 ESE0.004.064.690.630.000.000.000.009.38 SE0.002.973.130.470.000.000.000.006.56 SSE0.002.504.060.160.160.000.000.006.88 S0.002.034.060.000.000.000.000.006.09 SSW0.002.663.910.310.000.000.000.006.88 SW0.001.563.440.310.000.000.000.005.31 WSW0.003.283.910.310.000.000.000.007.50 W0.001.563.590.310.000.000.000.005.47 WNW0.000.633.130.310.000.000.000.004.06 NW0.001.882.500.160.000.000.000.004.53 NNW0.001.092.500.470.000.160.000.004.22 TOTAL3.4433.1353.139.840.310.160.000.00(DRN 01-282)THIS STABILITY CLASS ACCOUNTS FOR 22.21 PERCENT OF THE TOTAL 2882(DRN 01-282)

WSES-FSAR-UNIT-3TABLE 2.3-89WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78JULY, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 604+---------------------------- WIND SPEED (MPH) ----------------------------+WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM6.290.000.000.000.000.000.000.006.29N0.000.660.000.170.000.000.000.000.83 NNE0.000.990.170.000.000.000.000.001.16 NE0.002.150.990.170.000.000.000.003.31 ENE0.004.970.500.000.000.000.000.005.46 E0.003.970.660.000.000.000.000.004.64 ESE0.003.484.970.170.000.000.000.008.61 SE0.004.303.150.000.000.000.000.007.45 SSE0.004.474.970.170.000.000.000.009.60 S0.005.635.130.330.000.000.000.0011.09 SSW0.005.795.960.000.000.000.000.0011.75 SW0.003.972.980.000.000.000.000.006.95 WSW0.006.794.300.000.000.000.000.0011.09 W0.002.814.300.000.000.000.000.007.12 WNW0.001.660.500.000.000.000.000.002.15 NW0.000.990.660.000.000.000.000.001.66 NNW0.000.330.500.000.000.000.000.000.83 TOTAL6.2952.9839.740.990.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 20.96 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-90WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 JULY, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 417+---------------------------- WIND SPEED (MPH) ---------------------------+WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL----------------------------------------------CALM10.310.000.000.000.000.000.000.0010.31N0.000.240.240.000.000.000.000.000.48NNE0.000.240.000.000.000.000.000.000.24NE0.002.400.000.000.000.000.000.002.40 ENE0.007.670.000.000.000.000.000.007.67 E0.002.640.000.000.000.000.000.002.64ESE0.001.200.480.000.000.000.000.001.68SE0.006.713.600.000.000.000.000.0010.31 SSE0.009.355.520.000.000.000.000.0014.87 S0.007.432.640.000.000.000.000.0010.07 SSW0.0011.033.600.000.000.000.000.0014.63 SW0.008.150.960.000.000.000.000.009.11WSW0.006.470.720.000.000.000.000.007.19 W0.004.560.000.000.000.000.000.004.56 WNW0.002.400.240.000.000.000.000.002.64NW0.000.240.000.000.000.000.000.000.24NNW0.000.960.000.000.000.000.000.000.96TOTAL10.3171.7017.990.000.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 14.47 PERCENT OF THE TOTAL 2882 WSES-FSAR-UNIT-3TABLE 2.3-91WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 AUGUST, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 357+--------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.841.680.280.000.000.000.002.80NNE0.001.1212.897.560.000.000.000.0021.57NE0.001.4011.4811.200.000.000.000.0024.09 ENE0.000.565.041.681.120.280.000.008.68 E0.000.000.840.280.280.000.000.001.40ESE0.000.560.560.841.400.000.000.003.36SE0.000.842.240.000.000.000.000.003.08 SSE0.000.283.361.400.280.000.000.005.32 S0.000.281.960.840.000.000.000.003.08 SSW0.000.561.120.560.000.000.000.002.24 SW0.000.281.120.000.000.000.000.001.40WSW0.000.001.400.560.560.000.000.002.52 W0.000.000.561.400.000.000.000.001.96 WNW0.000.281.400.840.000.000.000.002.52NW0.000.287.560.840.000.000.000.008.68NNW0.000.566.440.280.000.000.000.007.28TOTAL0.007.8459.6628.573.640.280.000.00THIS STABILITY CLASS ACCOUNTS FOR 13.84 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-92WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 AUGUST, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 67+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL----------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.000.000.000.000.000.000.000.00NNE0.002.995.975.970.000.000.000.0014.93NE0.001.492.997.461.490.000.000.0013.43 ENE0.000.000.000.002.990.000.000.002.99 E0.000.000.000.002.990.000.000.002.99ESE0.000.002.991.497.460.000.000.0011.94SE0.000.002.991.491.490.000.000.005.97 SSE0.000.004.481.490.000.000.000.005.97 S0.000.000.001.490.000.000.000.001.49 SSW0.001.492.991.490.000.000.000.005.97 SW0.000.008.960.000.000.000.000.008.96WSW0.000.002.991.490.000.000.000.004.48 W0.000.000.000.000.000.000.000.000.00 WNW0.000.002.990.000.000.000.000.002.99NW0.000.0010.450.000.000.000.000.0010.45NNW0.000.005.971.490.000.000.000.007.46TOTAL0.005.9753.7323.8816.420.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.60 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-93WIND DISTRUBUTION BY SATBILITY AT WATERFORD 3 7/72-6/75&2/77-2/78AUGUST, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 68+--------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.001.471.470.000.000.000.000.002.94 NNE0.001.472.941.470.000.000.000.005.88 NE0.000.005.881.470.000.000.000.007.35 ENE0.000.001.472.942.940.000.000.007.35 E0.000.000.002.940.000.000.000.002.94 ESE0.000.001.472.941.470.000.000.005.88 SE0.001.471.474.411.470.000.000.008.82 SSE0.000.007.350.000.000.000.000.007.35 S0.000.000.001.470.000.000.000.001.47 SSW0.001.472.940.000.000.000.000.004.41 SW0.000.005.882.941.470.000.000.0010.29 WSW0.000.0011.762.940.000.000.000.0014.71 W0.000.000.002.940.000.000.000.002.94 WNW0.000.002.940.000.000.000.000.002.94 NW0.000.002.941.470.000.000.000.004.41 NNW0.001.478.820.000.000.000.000.0010.29 TOTAL0.007.3557.3527.947.350.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.64 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-94WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78AUGUST, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 546+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.550.000.000.000.000.000.000.000.55N0.000.733.301.100.000.000.000.005.13 NNE0.002.015.310.730.000.000.000.008.06 NE0.000.924.584.950.000.000.000.0010.44 ENE0.000.551.832.932.010.000.000.007.33 E0.000.371.651.832.200.000.000.006.04 ESE0.000.552.202.200.370.000.000.005.31 SE0.000.733.481.650.180.000.000.006.04 SSE0.001.104.400.920.180.000.000.006.59 S0.001.472.750.370.000.000.000.004.58 SSW0.001.283.661.280.000.000.000.006.23 SW0.001.284.030.920.000.000.000.006.23 WSW0.000.923.661.100.000.000.000.005.68 W0.000.373.481.650.000.000.000.005.49 WNW0.000.553.850.180.000.000.000.004.58 NW0.001.834.950.550.000.000.000.007.33 NNW0.000.922.930.550.000.000.000.004.40 TOTAL0.5515.5756.0422.894.950.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 21.16 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-95WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78AUGUST, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 691+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM2.600.000.000.000.000.000.000.002.60N0.001.162.600.720.000.000.000.004.49 NNE0.001.745.070.430.140.000.000.007.38 NE0.000.873.330.870.000.000.000.005.07 ENE0.000.873.621.450.140.000.000.006.08 E0.000.583.185.501.010.000.000.0010.27 ESE0.001.014.341.010.000.000.000.006.37 SE0.001.884.781.740.000.000.000.008.39 SSE0.002.174.631.010.000.000.000.007.81 S0.002.602.320.430.000.000.000.005.35 SSW0.003.334.200.430.000.000.000.007.96 SW0.002.602.750.580.000.000.000.005.93 WSW0.001.302.460.000.000.000.000.003.76 W0.001.592.170.140.000.000.000.003.91 WNW0.001.742.750.430.000.000.000.004.92 NW0.001.742.030.290.000.000.000.004.05 NNW0.001.164.200.290.000.000.000.005.64 TOTAL2.6026.3454.4115.341.300.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 26.78 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-96WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78AUGUST, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 481+--------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM6.030.000.000.000.000.000.000.006.03N0.001.461.040.000.000.000.000.002.49 NNE0.000.833.530.000.000.000.000.004.37 NE0.001.661.040.210.000.000.000.002.91 ENE0.002.081.250.000.000.000.000.003.33 E0.002.491.660.210.000.000.000.004.37 ESE0.003.123.950.000.000.000.000.007.07 SE0.004.374.780.210.000.000.000.009.36 SSE0.004.377.480.000.000.000.000.0011.85 S0.007.691.460.000.000.000.000.009.15 SSW0.006.242.290.000.000.000.000.008.52 SW0.004.371.460.000.000.000.000.005.82 WSW0.005.203.740.000.000.000.000.008.94 W0.004.371.250.000.000.000.000.005.61 WNW0.002.081.660.000.000.000.000.003.74 NW0.001.661.460.210.000.000.000.003.33 NNW0.001.041.870.210.000.000.000.003.12 TOTAL6.0353.0139.921.040.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 18.64 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-97WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 AUGUST, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 370+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL-------------------------------------------------------------------------CALM10.810.000.000.000.000.000.000.0010.81N0.001.620.810.000.000.000.000.002.43NNE0.001.081.620.000.000.000.000.002.70NE0.001.080.270.000.000.000.000.001.35 ENE0.000.270.000.000.000.000.000.000.27 E0.000.270.000.000.000.000.000.000.27ESE0.000.540.540.000.000.000.000.001.08SE0.004.593.510.000.000.000.000.008.11 SSE0.0012.164.860.000.000.000.000.0017.03 S0.008.382.160.000.000.000.000.0010.54 SSW0.008.111.620.000.000.000.000.009.73 SW0.007.842.160.000.000.000.000.0010.00WSW0.008.381.080.000.000.000.000.009.46 W0.008.920.540.000.000.000.000.009.46 WNW0.003.510.810.000.000.000.000.004.32NW0.001.350.000.000.000.000.000.001.35NNW0.000.810.270.000.000.000.000.001.08TOTAL10.8168.9220.270.000.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 14.34 PERCENT OF THE TOTAL 2580 WSES-FSAR-UNIT-3TABLE 2.3-98WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78 SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 349+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL--------------------------------------------------------------------------CALM0.000.000.000.000.000.000.000.000.00N0.000.570.860.860.000.000.000.002.29 NNE0.000.293.726.020.290.000.000.0010.32NE0.000.2912.3212.891.150.000.000.0026.65 ENE0.000.296.306.020.000.000.000.0012.61E0.000.291.721.720.860.000.000.004.58ESE0.000.002.293.150.000.000.000.005.44 SE0.000.292.582.010.570.000.000.005.44 SSE0.000.291.433.150.000.000.000.004.87 S0.000.291.150.290.000.000.000.001.72 SSW0.000.001.431.720.000.000.000.003.15 SW0.000.001.434.300.000.000.000.005.73WSW0.000.003.444.010.290.000.000.007.74W0.000.000.290.860.000.000.000.001.15 WNW0.000.001.150.570.000.000.000.001.72 NW0.000.001.150.570.000.000.000.001.72NNW0.000.002.012.870.000.000.000.004.87 TOTAL0.002.5843.2751.003.150.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 13.34 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-99WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 92+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.090.000.000.000.000.000.000.001.09N0.000.001.090.000.000.000.000.001.09 NNE0.001.097.611.090.000.000.000.009.78 NE0.001.0910.875.435.430.000.000.0022.83 ENE0.000.005.436.524.350.000.000.0016.30 E0.000.000.003.261.090.000.000.004.35 ESE0.000.001.095.430.000.000.000.006.52 SE0.000.001.091.090.000.000.000.002.17 SSE0.000.003.261.091.090.000.000.005.43 S0.000.003.261.090.000.000.000.004.35 SSW0.001.090.002.170.000.000.000.003.26 SW0.000.003.260.000.000.000.000.003.26 WSW0.000.000.000.003.260.000.000.003.26 W0.000.004.351.093.260.000.000.008.70 WNW0.000.002.171.090.000.000.000.003.26 NW0.000.003.260.000.000.000.000.003.26 NNW0.001.090.000.000.000.000.000.001.09 TOTAL1.094.3546.7429.3518.480.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.52 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-100WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 89+--------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.120.000.000.000.000.000.000.001.12N0.001.124.490.000.000.000.000.005.62 NNE0.001.122.251.120.000.000.000.004.49 NE0.001.128.998.993.370.000.000.0022.47 ENE0.003.372.257.872.250.000.000.0015.73 E0.001.121.120.002.250.000.000.004.49 ESE0.000.000.004.491.120.000.000.005.62 SE0.000.004.490.000.000.000.000.004.49 SSE0.001.123.370.001.120.000.000.005.62 S0.001.123.371.120.000.000.000.005.62 SSW0.001.123.371.120.000.000.000.005.62 SW0.000.003.370.000.000.000.000.003.37 WSW0.000.001.123.371.120.000.000.005.62 W0.000.002.250.000.000.000.000.002.25 WNW0.000.000.000.000.000.000.000.000.00 NW0.000.002.250.000.000.000.000.002.25 NNW0.001.123.371.120.000.000.000.005.62 TOTAL1.1212.3646.0729.2111.240.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.40 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-101Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 539 +------------------------------- WIND SPEED (MPH) --------------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0 TOTAL

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CALM0.560.000.000.000.000.000.000.000.56N0.000.740.743.150.000.000.000.004.64(DRN 01-282)NNE0.000.563.533.530.000.000.000.007.61 (DRN 01-282)NE0.000.747.426.312.600.000.000.0017.07ENE0.000.192.783.711.480.000.000.008.16 E0.000.371.482.412.230.560.000.007.05 ESE0.000.744.088.720.740.190.000.0014.47 SE0.000.373.153.150.370.560.000.007.61 SSE0.000.372.412.041.110.000.000.005.94 S0.000.932.970.560.930.000.000.005.38 SSW0.000.931.480.930.560.190.000.004.08 SW0.000.562.600.930.560.000.000.004.64 WSW0.000.931.480.740.370.000.000.003.53 W0.000.191.300.190.000.000.000.001.67 WNW0.000.000.560.370.190.000.000.001.11 NW0.000.000.930.190.000.000.000.001.11 NNW0.000.192.232.780.190.000.000.005.38 TOTAL0.567.7939.1539.7011.321.480.000.00 THIS STABILITY CLASS ACCOUNTS FOR 20.60 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-102WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 776+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.290.000.000.000.000.000.000.001.29N0.000.522.321.680.000.000.000.004.51 NNE0.000.904.122.060.520.000.000.007.60 NE0.001.935.542.712.060.000.000.0012.24 ENE0.000.904.384.770.130.000.000.0010.18 E0.000.774.384.380.000.000.000.009.54 ESE0.001.687.092.190.260.000.000.0011.21 SE0.001.685.670.770.130.000.000.008.25 SSE0.002.063.480.520.260.000.000.006.31 S0.001.422.581.030.000.000.000.005.03 SSW0.000.903.090.900.000.000.000.004.90 SW0.001.292.960.260.000.000.000.004.51 WSW0.001.552.190.130.000.000.000.003.87 W0.000.771.420.130.000.000.000.002.32 WNW0.001.290.640.000.000.000.000.001.93 NW0.000.521.550.390.130.000.000.002.58 NNW0.000.521.681.550.000.000.000.003.74 TOTAL1.2918.6953.0923.453.480.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 29.66 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-103WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 432+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM3.940.000.000.000.000.000.000.003.94N0.001.851.850.000.000.000.000.003.70 NNE0.001.621.850.000.000.000.000.003.47 NE0.002.552.310.000.000.000.000.004.86 ENE0.003.013.470.230.000.000.000.006.71 E0.002.782.080.230.000.000.000.005.09 ESE0.004.178.100.000.000.000.000.0012.27 SE0.005.564.630.000.000.000.000.0010.19 SSE0.005.564.400.000.000.000.000.009.95 S0.005.325.090.230.000.000.000.0010.65 SSW0.006.484.630.000.000.000.000.0011.11 SW0.003.472.550.000.000.000.000.006.02 WSW0.002.080.930.000.000.000.000.003.01 W0.000.930.230.000.000.000.000.001.16 WNW0.000.690.930.000.000.000.000.001.62 NW0.001.161.620.000.000.000.000.002.78 NNW0.001.851.160.460.000.000.000.003.47 TOTAL3.9449.0745.831.160.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 16.51 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-104Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78SEPTEMBER, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 339+--------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM16.220.000.000.000.000.000.000.0016.22N0.000.880.000.000.000.000.000.000.88 NNE0.000.290.290.000.000.000.000.000.59 NE0.000.880.290.000.000.000.000.001.18(DRN 01-282)ENE0.000.880.000.000.000.000.000.000.88 (DRN 01-282)E0.001.180.290.000.000.000.000.001.47ESE0.007.673.830.290.000.000.000.0011.80 SE0.007.963.540.000.000.000.000.0011.50 SSE0.0010.914.420.000.000.000.000.0015.34 S0.006.492.650.000.000.000.000.009.14 SSW0.005.601.470.000.000.000.000.007.08 SW0.005.600.000.000.000.000.000.005.60 WSW0.006.780.000.000.000.000.000.006.78 W0.003.540.000.000.000.000.000.003.54WNW0.002.650.000.000.000.000.000.002.65NW0.002.950.290.000.000.000.000.003.24 NNW0.002.060.000.000.000.000.000.002.06 TOTAL16.2266.3717.110.290.000.000.000.00 THIS STABILITY CLASS ACCOUNTS FOR 12.96 PERCENT OF THE TOTAL 2616 WSES-FSAR-UNIT-3TABLE 2.3-105WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 476+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.421.891.470.420.630.000.004.83 NNE0.000.007.777.981.050.000.000.0016.81 NE0.000.4212.8216.603.570.000.000.0033.40 ENE0.000.004.417.560.420.000.000.0012.39 E0.000.000.422.310.630.000.000.003.36 ESE0.000.211.262.730.420.000.000.004.62 SE0.000.001.052.310.420.000.000.003.78 SSE0.000.000.420.630.210.000.000.001.26 S0.000.000.000.000.420.000.000.000.42 SSW0.000.210.000.000.630.000.000.000.84 SW0.000.000.420.420.840.000.000.001.68 WSW0.000.000.211.470.420.000.000.002.10 W0.000.000.840.840.210.000.000.001.89 WNW0.000.001.261.050.000.000.000.002.31 NW0.000.002.311.260.000.000.000.003.57 NNW0.000.211.684.410.420.000.000.006.72 TOTAL0.001.4736.7651.0510.080.630.000.00THIS STABILITY CLASS ACCOUNTS FOR 17.98 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-106Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 57+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.003.510.001.750.000.000.005.26 NNE0.001.755.263.513.510.000.000.0014.04 NE0.000.008.773.511.750.000.000.0014.04 ENE0.000.003.515.261.750.000.000.0010.53 E0.000.001.753.515.260.000.000.0010.53 ESE0.000.003.515.260.000.000.000.008.77 SE0.000.000.001.750.000.000.000.001.75 SSE0.000.000.003.510.000.000.000.003.51 S0.000.001.751.750.000.000.000.003.51 SSW0.000.000.001.750.000.000.000.001.75 SW0.000.001.755.261.750.000.000.008.77 WSW0.000.001.750.000.000.000.000.001.75 W0.000.000.003.511.750.000.000.005.26 WNW0.000.001.750.000.000.000.000.001.75 NW0.000.003.510.000.000.000.000.003.51 NNW0.000.001.751.751.750.000.000.005.26 TOTAL0.001.7538.6040.3519.300.000.000.00(DRN 01-282)THIS STABILITY CLASS ACCOUNTS FOR 2.15 PERCENT OF THE TOTAL 2647 (DRN 01-282)

WSES-FSAR-UNIT-3TABLE 2.3-107Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTIONNUMBER OF OBSERVATIONS = 33+--------------------------- WIND SPEED (MPH) ---------------------------+WIND0.83.17.112.118.124.1ABOVEDIRECTIONCALM3.07.012.018.024.032.032.0TOTAL

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CALM--------0.00------0.00------0.00------0.00------0.00------0.00------0.00------0.00-------0.00N0.000.000.003.030.000.000.000.003.03NNE0.000.0015.150.000.000.000.000.0015.15NE0.000.009.099.096.060.000.000.0024.24 ENE0.003.036.066.060.000.000.000.0015.15 E0.000.003.033.030.000.000.000.006.06 ESE0.000.000.003.030.000.000.000.003.03 SE0.000.000.006.060.000.000.000.006.06 SSE0.000.000.000.003.030.000.000.003.03 S0.000.000.000.000.000.000.000.000.00 SSW0.000.000.000.000.000.000.000.000.00 SW0.000.000.000.000.000.000.000.000.00(DRN 01-282)WSW0.000.000.006.060.000.000.000.006.06W0.000.000.006.060.000.000.000.006.06(DRN 01-282)WNW0.000.000.000.000.000.000.000.000.00NW0.000.003.030.000.000.000.000.003.03 NNW0.003.033.033.030.000.000.000.009.09 TOTAL0.006.0639.3945.459.090.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 1.25 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-108WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 493+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.410.000.000.000.000.000.000.000.41N0.000.813.043.253.450.000.000.0010.55 NNE0.000.415.274.261.830.000.000.0011.76 NE0.000.417.717.303.040.000.000.0018.46 ENE0.000.613.254.671.620.000.000.0010.14 E0.000.000.613.651.010.000.000.005.27 ESE0.000.410.815.270.200.000.000.006.69 SE0.000.200.202.841.830.410.000.005.48 SSE0.000.001.011.420.000.000.000.002.43 S0.000.000.610.000.000.000.000.000.61 SSW0.000.001.221.420.000.000.000.002.64 SW0.000.001.620.810.000.000.000.002.43 WSW0.000.000.810.410.000.000.000.001.22 W0.000.200.610.610.200.000.000.001.62 WNW0.000.412.231.010.200.000.000.003.85 NW0.001.015.072.640.410.000.000.009.13 NNW0.000.414.671.830.410.000.000.007.30 TOTAL0.414.8738.7441.3814.200.410.000.00THIS STABILITY CLASS ACCOUNTS FOR 18.62 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-109WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 694+--------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.430.000.000.000.000.000.000.000.43N0.000.583.314.610.140.000.000.008.65 NNE0.001.013.314.320.720.000.000.009.37 NE0.001.154.325.481.300.000.000.0012.25 ENE0.000.295.333.750.140.000.000.009.51 E0.000.293.605.190.000.000.000.009.08 ESE0.000.588.362.590.140.000.000.0011.67 SE0.000.004.763.750.140.000.000.008.65 SSE0.000.291.731.010.140.000.000.003.17 S0.000.000.860.000.000.000.000.000.86 SSW0.000.141.590.430.000.000.000.002.16 SW0.000.431.150.140.000.000.000.001.73 WSW0.000.580.860.000.000.000.000.001.44 W0.000.000.430.000.000.000.000.000.43 WNW0.000.432.450.430.140.000.000.003.46 NW0.001.444.321.150.430.000.000.007.35 NNW0.001.156.052.160.430.000.000.009.80 TOTAL0.438.3652.4535.013.750.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 26.22 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-110WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2177-2178OCTOBER, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 395+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM4.050.000.000.000.000.000.000.004.05N0.002.284.810.250.000.000.000.007.34 NNE0.002.5310.890.510.000.000.000.0013.92 NE0.001.775.323.040.000.000.000.0010.13 ENE0.001.277.850.760.000.000.000.009.87 E0.000.514.301.520.000.000.000.006.33 ESE0.001.776.580.000.000.000.000.008.35 SE0.002.032.780.000.000.000.000.004.81 SSE0.000.510.250.000.000.000.000.000.76 S0.000.761.010.000.000.000.000.001.77 SSW0.000.250.510.000.000.000.000.000.76 SW0.001.772.780.000.000.000.000.004.56 WSW0.002.531.520.000.000.000.000.004.05 W0.000.760.760.000.000.000.000.001.52 WNW0.001.771.010.000.000.000.000.002.78 NW0.003.545.570.000.000.000.000.009.11 NNW0.003.805.570.510.000.000.000.009.87 TOTAL4.0527.8561.526.580.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 14.92 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-111WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78OCTOBER, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 499+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM12.220.000.000.000.000.000.000.0012.22N0.001.602.810.000.000.000.000.004.41 NNE0.002.812.000.000.000.000.000.004.81 NE0.001.000.800.000.000.000.000.001.80 ENE0.001.400.800.000.000.000.000.002.20 E0.000.600.200.000.000.000.000.000.80 ESE0.002.400.600.000.000.000.000.003.01 SE0.002.200.400.000.000.000.000.002.61 SSE0.007.012.400.000.000.000.000.009.42 S0.003.211.600.000.000.000.000.004.81 SSW0.004.611.200.000.000.000.000.005.81 SW0.006.211.600.000.000.000.000.007.82 WSW0.009.421.200.000.000.000.000.0010.62 W0.005.810.800.000.000.000.000.006.61 WNW0.008.821.200.000.000.000.000.0010.02 NW0.005.411.200.000.000.000.000.006.61 NNW0.004.012.400.000.000.000.000.006.41 TOTAL12.2266.5321.240.000.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 18.85 PERCENT OF THE TOTAL 2647 WSES-FSAR-UNIT-3TABLE 2.3-112WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 290+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.341.031.720.000.000.000.003.10 NNE0.000.693.455.520.340.000.000.0010.00 NE0.000.3411.3810.341.720.000.000.0023.79 ENE0.000.341.384.830.000.000.000.006.55 E0.000.000.342.070.000.000.000.002.41 ESE0.000.002.412.410.690.000.000.005.52 SE0.000.000.345.173.100.000.000.008.62 SSE0.000.002.074.831.380.000.000.008.28 S0.000.000.692.410.340.000.000.003.45 SSW0.000.000.001.030.000.000.000.001.03 SW0.000.000.341.030.690.000.000.002.07 WSW0.000.000.340.690.000.000.000.001.03 W0.000.000.342.760.690.000.000.003.79 WNW0.000.341.032.411.380.000.000.005.17 NW0.000.001.723.791.720.000.000.007.24 NNW0.000.003.103.101.030.690.000.007.93 TOTAL0.002.0730.0054.1413.100.690.000.00THIS STABILITY CLASS ACCOUNTS FOR 10.62 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-113WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 48+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.004.172.080.000.000.000.006.25 NNE0.000.000.004.170.000.000.000.004.17 NE0.000.006.254.172.080.000.000.0012.50 ENE0.000.004.172.082.080.000.000.008.33 E0.000.000.000.000.000.000.000.000.00 ESE0.000.002.080.002.080.000.000.004.17 SE0.000.000.008.330.000.000.000.008.33 SSE0.000.002.088.332.080.000.000.0012.50 S0.000.000.008.338.330.000.000.0016.67 SSW0.000.000.002.080.000.000.000.002.08 SW0.000.002.084.170.000.000.000.006.25 WSW0.000.000.000.000.000.000.000.000.00 W0.000.000.004.170.000.000.000.004.17 WNW0.000.002.082.080.000.000.000.004.17 NW0.000.002.084.170.000.000.000.006.25 NNW0.000.000.004.170.000.000.000.004.17 TOTAL0.000.0025.0058.3316.670.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 1.76 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-114Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 46+---------------------------- WIND SPEED (MPH) -----------------------------+WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.002.174.350.000.000.000.006.52 NNE0.000.000.000.000.000.000.000.000.00 NE0.000.002.176.520.000.000.000.008.70(DRN 01-282)ENE0.000.000.000.008.700.000.000.008.70 (DRN 01-282)E0.000.000.000.000.000.000.000.000.00ESE0.002.172.176.528.700.000.000.0019.57 SE0.000.002.176.524.350.000.000.0013.04 SSE0.000.002.174.358.700.000.000.0015.22 S0.000.000.002.170.000.000.000.002.17 SSW0.000.000.000.002.170.000.000.002.17 SW0.000.000.000.000.000.000.000.000.00 WSW0.002.170.002.170.000.000.000.004.35 W0.000.000.002.172.170.000.000.004.35WNW0.000.000.000.000.000.000.000.000.00NW0.000.004.354.350.000.000.000.008.70 NNW0.000.002.172.172.170.000.000.006.52(DRN 01-282)TOTAL0.004.3517.3941.3036.960.000.000.00 (DRN 01-282)THIS STABILITY CLASS ACCOUNTS FOR 1.68 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-115Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 719+--------------------------- WIND SPEED (MPH) ---------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.561.812.640.830.000.000.005.84 NNE0.000.563.893.620.420.000.000.008.48 NE0.000.562.924.172.640.140.000.0010.43 ENE0.000.141.532.781.110.000.000.005.56(DRN 01-282)E0.000.140.282.640.700.140.000.003.89 (DRN 01-282)ESE0.000.002.643.892.360.000.000.008.90SE0.000.141.813.061.530.000.000.006.54 SSE0.000.141.535.563.200.420.000.0010.85 S0.000.001.112.090.700.140.000.004.03SSW0.000.000.971.530.000.000.000.002.50 SW0.000.140.281.250.000.000.000.001.67WSW0.000.141.391.530.420.140.000.003.62 W0.000.001.252.090.560.000.000.003.89 WNW0.000.140.972.780.140.140.000.004.17 NW0.000.141.254.031.110.560.000.007.09 NNW0.000.565.015.291.670.000.000.0012.52 TOTAL0.003.3428.6548.9617.391.670.000.00 THIS STABILITY CLASS ACCOUNTS FOR 26.33 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-116Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 1043+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.380.000.000.000.000.000.000.000.38N0.000.772.975.181.630.000.000.0010.55 NNE0.000.582.493.260.770.000.000.007.09 NE0.000.584.227.091.250.000.000.0013.14 ENE0.000.383.262.490.100.000.000.006.23 E0.000.291.921.440.000.000.000.003.64 ESE0.000.294.792.210.000.000.000.007.29 SE0.000.294.704.410.100.100.000.009.59 SSE0.000.192.785.270.480.000.000.008.72 S0.000.101.250.770.190.100.000.002.40(DRN 01-282)SSW0.000.192.011.250.100.000.000.003.55(DRN 01-282)SW0.000.000.860.190.000.000.000.001.05WSW0.000.381.530.100.000.000.000.002.01 W0.000.191.440.670.100.000.000.002.40 WNW0.000.101.631.530.480.000.000.003.74 NW0.000.582.303.450.860.000.000.007.19 NNW0.000.583.745.940.770.000.000.0011.03TOTAL0.385.4741.9045.256.810.190.000.00 THIS STABILITY CLASS ACCOUNTS FOR 38.19 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-117WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 333+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVE DIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.500.000.000.000.000.000.000.001.50N0.000.001.800.600.000.000.000.002.40 NNE0.000.905.410.000.000.000.000.006.31 NE0.001.507.810.900.000.000.000.0010.21 ENE0.001.806.011.800.000.000.000.009.61 E0.001.204.800.900.000.000.000.006.91 ESE0.002.709.310.900.000.000.000.0012.91 SE0.001.809.010.600.600.000.000.0012.01 SSE0.003.904.200.300.300.000.000.008.71 S0.002.102.400.000.000.000.000.004.50 SSW0.000.903.000.000.000.000.000.003.90 SW0.000.900.300.000.000.000.000.001.20 WSW0.000.600.900.000.000.000.000.001.50 W0.000.902.700.000.000.000.000.003.60 WNW0.000.602.400.000.000.000.000.003.00 NW0.001.505.110.600.000.000.000.007.21 NNW0.001.203.300.000.000.000.000.004.50 TOTAL1.5022.5268.476.610.900.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 12.19 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-118Revision11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78NOVEMBER, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 252+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM5.160.000.000.000.000.000.000.005.16N0.001.590.000.000.000.000.000.001.59NNE0.000.400.400.000.000.000.000.000.79 NE0.001.192.380.000.000.000.000.003.57ENE0.003.573.570.000.000.000.000.007.14(DRN 01-282)E0.001.981.590.000.000.000.000.003.57 (DRN 01-282)ESE0.001.191.190.000.000.000.000.002.38SE0.004.765.560.400.000.000.000.0010.71 SSE0.007.1411.110.000.000.000.000.0018.25 S0.003.171.190.000.000.000.000.004.37SSW0.002.780.790.000.000.000.000.003.57 SW0.004.371.190.000.000.000.000.005.56WSW0.006.353.970.000.000.000.000.0010.32W0.004.375.160.000.000.000.000.009.52 WNW0.003.174.370.000.000.000.000.007.54 NW0.002.381.590.000.000.000.000.003.97 NNW0.001.590.400.000.000.000.000.001.98 TOTAL5.1650.0044.440.400.000.000.000.00 THIS STABILITY CLASS ACCOUNTS FOR 9.23 PERCENT OF THE TOTAL 2731 WSES-FSAR-UNIT-3TABLE 2.3-119WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 310+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.001.290.970.320.000.000.002.58 NNE0.000.320.651.940.320.000.000.003.23 NE0.000.006.133.231.940.000.000.0011.29 ENE0.000.004.843.230.970.000.000.009.03 E0.000.000.970.970.000.000.000.001.94 ESE0.000.001.611.610.970.650.000.004.84 SE0.000.321.943.871.940.320.000.008.39 SSE0.000.002.902.900.970.000.000.006.77 S0.000.320.651.940.320.000.000.003.23 SSW0.000.000.320.651.610.000.000.002.58 SW0.000.000.974.190.650.000.000.005.81 WSW0.000.000.321.610.970.000.000.002.90 W0.000.000.001.940.320.000.000.002.26 WNW0.000.000.973.551.610.650.000.006.77 NW0.000.005.484.191.610.000.000.0011.29 NNW0.000.325.487.742.261.290.000.0017.10 TOTAL0.001.2934.5244.5216.772.900.000.00THIS STABILITY CLASS ACCOUNTS FOR 10.92 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-120Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 89+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.000.000.000.000.000.000.000.000.00 NNE0.001.121.120.001.124.490.000.007.87 NE0.000.003.374.492.250.000.000.0010.11 ENE0.000.001.122.250.000.000.000.003.37 E0.000.001.122.250.000.000.000.003.37 ESE0.000.001.121.121.120.000.000.003.37 SE0.002.250.002.250.000.000.000.004.49 SSE0.001.120.008.993.370.000.000.0013.48 S0.000.001.125.621.120.000.000.007.87 SSW0.000.001.120.002.250.000.000.003.37 SW0.000.000.002.256.740.000.000.008.99 WSW0.000.001.122.252.252.250.000.007.87(DRN 01-282)W0.001.121.121.121.120.000.000.004.49 (DRN 01-282)WNW0.000.001.122.251.120.000.000.004.49NW0.000.003.373.370.000.000.000.006.74 NNW0.001.123.373.372.250.000.000.0010.11 TOTAL0.006.7420.2241.5724.726.740.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.14 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-121Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 94+------------------ WIND SPEED (MPH) ------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.000.000.000.000.000.000.000.000.00N0.002.131.060.004.261.060.000.008.51 NNE0.001.061.061.064.263.190.000.0010.64 NE0.000.001.062.132.130.000.000.005.32 ENE0.000.002.135.320.000.000.000.007.45 E0.000.000.001.060.000.000.000.001.06 ESE0.000.001.061.062.130.000.000.004.26 SE0.001.060.003.191.061.060.000.006.38 SSE0.000.000.002.132.130.000.000.004.26 S0.000.003.192.130.000.000.000.005.32 SSW0.000.000.003.196.380.000.000.009.57 SW0.000.001.060.000.000.000.000.001.06(DRN 01-282)WSW0.001.062.131.062.130.000.000.006.38 (DRN 01-282)W0.001.060.003.193.190.000.000.007.45WNW0.000.001.061.060.000.000.000.002.13NW0.000.002.133.191.060.000.000.006.38NNW0.000.001.066.386.380.000.000.0013.83TOTAL0.006.3817.0236.1735.115.320.000.00THIS STABILITY CLASS ACCOUNTS FOR 3.31 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-122Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 837+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.240.000.000.000.000.000.000.000.24N0.000.360.723.701.080.000.000.005.85 NNE0.000.121.315.140.960.240.000.007.77 NE0.000.002.634.060.000.000.000.006.69 ENE0.000.121.191.790.840.000.000.003.94 E0.000.120.602.390.000.000.000.003.11 ESE0.000.121.672.751.910.120.000.006.57 SE0.000.481.793.462.150.360.000.008.24(DRN 01-282)SSE0.000.241.674.301.670.120.000.008.00 (DRN 01-282)S0.000.242.033.941.310.000.000.007.53SSW0.000.241.192.991.910.120.000.006.45 SW0.000.000.601.791.310.000.000.003.70 WSW0.000.121.551.080.360.000.000.003.11 W0.000.241.082.151.190.000.000.004.66 WNW0.000.361.792.512.030.000.000.006.69 NW0.000.242.031.912.990.120.000.007.29 NNW0.000.360.844.184.420.360.000.0010.16 TOTAL0.243.3522.7048.1524.131.430.000.00 THIS STABILITY CLASS ACCOUNTS FOR 29.49 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-123WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 938+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.430.000.000.000.000.000.000.000.43N0.000.432.561.600.110.000.000.004.69 NNE0.000.002.240.640.000.000.000.002.88 NE0.000.753.520.960.000.000.000.005.22 ENE0.000.323.201.810.000.000.000.005.33 E0.000.112.131.170.000.000.000.003.41 ESE0.000.435.545.010.530.000.000.0011.51 SE0.000.324.375.013.090.210.000.0013.01 SSE0.000.646.183.840.530.110.000.0011.30 S0.000.645.973.090.210.000.000.009.91 SSW0.000.852.132.560.000.000.000.005.54 SW0.000.321.390.430.000.000.000.002.13 WSW0.000.211.070.110.000.000.000.001.39 W0.000.531.600.850.000.000.000.002.99 WNW0.000.213.302.450.000.000.000.005.97 NW0.000.322.132.130.320.000.000.004.90 NNW0.000.432.565.440.850.110.000.009.38 TOTAL0.436.5049.8937.105.650.430.000.00THIS STABILITY CLASS ACCOUNTS FOR 33.05 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-124Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 334+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.500.000.000.000.000.000.000.001.50N0.001.502.100.300.000.000.000.003.89(DRN 01-282)NNE0.000.900.900.000.000.000.000.001.80 (DRN 01-282)NE0.001.503.890.300.000.000.000.005.69ENE0.002.406.890.000.000.000.000.009.28 E0.000.001.800.000.000.000.000.001.80 ESE0.001.206.890.000.000.000.000.008.08 SE0.002.693.890.300.000.000.000.006.89 SSE0.001.506.590.300.000.000.000.008.38 S0.000.607.190.300.000.000.000.008.08 SSW0.000.903.890.000.000.000.000.004.79 SW0.001.802.100.000.000.000.000.003.89 WSW0.001.803.590.000.000.000.000.005.39 W0.002.107.780.000.000.000.000.009.88 WNW0.001.503.590.600.000.000.000.005.69(DRN 01-282)NW0.001.205.390.300.000.000.000.006..89 (DRN 01-282)NNW0.002.994.190.600.300.000.000.008.08TOTAL1.5024.5570.662.990.300.000.000.00(DRN 01-282)THIS STABILITY CLASS ACCOUNTS FOR 11.77 PERCENT OF THE TOTAL 2838 (DRN 01-282)

WSES-FSAR-UNIT-3TABLE 2.3-125WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78DECEMBER, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 236+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM8.900.000.000.000.000.000.000.008.90N0.000.851.270.000.000.000.000.002.12 NNE0.001.271.270.000.000.000.000.002.54 NE0.004.662.970.000.000.000.000.007.63 ENE0.002.972.970.000.000.000.000.005.93 E0.000.850.850.000.000.000.000.001.69 ESE0.002.121.270.000.000.000.000.003.39 SE0.003.395.510.000.000.000.000.008.90 SSE0.002.972.540.420.000.000.000.005.93 S0.005.512.970.000.000.000.000.008.47 SSW0.002.970.850.000.000.000.000.003.81 SW0.002.971.690.000.000.000.000.004.66 WSW0.005.514.240.000.000.000.000.009.75 W0.007.632.970.000.000.000.000.0010.59 WNW0.004.240.850.000.000.000.000.005.08 NW0.003.811.690.000.000.000.000.005.51 NNW0.002.972.120.000.000.000.000.005.08 TOTAL8.9054.6636.020.420.000.000.000.00THIS STABILITY CLASS ACCOUNTS FOR 8.32 PERCENT OF THE TOTAL 2838 WSES-FSAR-UNIT-3TABLE 2.3-126WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS A PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 4515+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.040.000.000.000.000.000.000.000.04N0.000.421.550.860.310.070.000.003.21 NNE0.000.424.964.920.530.000.000.0010.83 NE0.000.319.017.731.000.020.000.0018.07 ENE0.000.203.923.630.400.040.000.008.19 E0.000.040.711.110.220.000.000.002.08 ESE0.000.181.623.371.220.040.000.006.42 SE0.000.241.283.101.770.270.020.006.69 SSE0.000.242.483.461.680.290.000.008.15 S0.000.311.311.590.890.130.000.004.23 SSW0.000.161.221.731.130.110.000.004.34 SW0.000.161.152.020.710.020.000.004.05 WSW0.000.111.001.350.510.090.000.003.06 W0.000.130.841.570.730.000.000.003.28 WNW0.000.111.221.440.620.040.000.003.43 NW0.000.223.032.210.470.000.000.005.94 NNW0.000.353.613.010.860.130.000.007.97 TOTAL0.043.6138.9143.1013.051.260.020.00THIS STABILITY CLASS ACCOUNTS FOR 13.89 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-127Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS B PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 847+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.120.000.000.000.000.000.000.000.12N0.000.472.130.710.710.000.000.004.01 NNE0.000.593.192.360.830.470.000.007.44 NE0.000.596.023.781.530.000.000.0011.92 ENE0.000.242.833.901.650.120.000.008.74 E0.000.120.831.771.420.000.000.004.13 ESE0.000.001.532.601.530.000.000.005.67 SE0.000.350.942.241.890.240.000.005.67 SSE0.00.122.014.722.240.590.000.009.68 S0.000.001.182.831.420.120.000.005.55 SSW0.000.351.062.601.770.240.000.006.02 SW0.000.002.362.951.770.000.000.007.08 WSW0.000.001.301.060.710.240.000.003.31 W0.000.241.531.421.300.000.000.004.49 WNW0.000.471.301.650.590.000.000.004.01 NW0.000.122.831.770.590.120.000.005.43 NNW0.000.242.602.601.300.000.000.006.73(DRN 01-282)TOTAL0.123.9033.6538.9621.252.130.000.00(DRN 01-282)THIS STABILITY CLASS ACCOUNTS FOR 2.61 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-128WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS C PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 898+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.110.000.000.000.000.000.000.000.11N0.000.561.891.001.560.110.000.005.12 NNE0.000.671.891.670.670.330.000.005.23 NE0.000.114.574.121.220.110.000.0010.13 ENE0.000.783.123.561.220.110.000.008.80 E0.000.110.670.670.330.000.000.001.78 ESE0.000.111.003.451.670.000.000.006.24 SE0.000.331.223.342.230.220.000.007.35 SSE0.000.112.233.012.560.890.000.008.80 S0.000.111.782.120.890.450.000.005.35 SSW0.000.221.672.561.340.110.000.005.90 SW0.000.002.002.451.220.000.000.005.68 WSW0.000.452.451.781.340.000.000.006.01 W0.000.450.561.561.670.000.000.004.23 WNW0.000.110.781.221.220.000.000.003.34 NW0.000.332.342.340.780.000.000.005.79 NNW0.000.673.014.681.780.000.000.0010.13 TOTAL0.115.1231.1839.5321.712.340.000.00THIS STABILITY CLASS ACCOUNTS FOR 2.76 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-129WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS D PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 8167+---------------------------- WIND SPEED (MPH) -----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM0.280.000.000.000.000.000.000.000.28N0.000.531.702.340.940.060.000.005.57 NNE0.000.732.393.230.820.050.000.007.22 NE0.000.623.603.751.110.020.000.009.11 ENE0.000.592.362.551.160.040.000.006.70 E0.000.230.991.760.540.060.000.003.59 ESE0.000.452.144.081.380.100.000.008.15 SE0.000.512.413.862.230.340.010.009.37 SSE0.000.342.273.642.330.500.060.009.13 S0.000.361.952.691.540.230.010.006.78 SSW0.000.311.712.111.050.120.010.005.31 SW0.000.241.781.790.640.020.000.004.47 WSW0.000.281.441.040.360.060.000.003.18 W0.000.221.151.130.480.000.020.003.00 WNW0.000.451.221.410.800.020.010.003.92 NW0.000.542.291.561.460.090.000.005.93 NNW0.000.482.613.441.620.130.000.008.28 TOTAL0.286.8932.0240.3618.451.860.130.00THIS STABILITY CLASS ACCOUNTS FOR 25.13 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-130WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS E PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 9862+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM1.010.000.000.000.000.000.000.001.01N0.000.632.112.390.430.010.000.005.57 NNE0.000.692.862.060.310.020.000.005.94 NE0.000.853.653.050.580.000.000.008.13 ENE0.000.653.712.650.480.000.000.007.48 E0.000.422.352.200.230.000.000.005.20 ESE0.000.895.352.970.520.010.000.009.74 SE0.000.845.263.761.020.120.010.0011.02 SSE0.001.174.392.990.760.080.060.009.45 S0.000.883.331.910.590.120.020.006.84 SSW0.001.012.551.270.170.070.020.005.09 SW0.000.661.790.740.110.030.000.003.34 WSW0.000.761.620.430.090.020.000.002.92 W0.000.511.440.620.100.010.000.002.68 WNW0.000.631.970.770.200.000.000.003.57 NW0.000.892.261.260.410.010.000.004.83 NNW0.000.733.042.890.490.030.000.007.18 TOTAL1.0112.2147.6931.956.490.540.110.00THIS STABILITY CLASS ACCOUNTS FOR 30.34 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-131WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS F PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 4724+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM4.040.000.000.000.000.000.000.004.04N0.001.311.840.300.000.000.000.003.45 NNE0.001.403.070.170.000.000.000.004.64 NE0.001.803.580.640.060.000.000.006.08 ENE0.002.354.190.490.060.000.000.007.09 E0.001.442.100.610.000.000.000.004.15 ESE0.002.395.400.190.060.020.000.008.07 SE0.003.115.270.300.130.000.020.008.83 SSE0.003.156.180.250.060.000.020.009.67 S0.003.565.020.170.040.000.000.008.78 SSW0.003.134.040.130.020.000.000.007.32 SW0.002.562.460.420.020.000.000.005.46 WSW0.002.822.960.110.040.000.000.005.93 W0.001.842.460.110.000.000.000.004.40 WNW0.001.651.460.060.040.000.000.003.22 NW0.001.692.520.250.020.000.000.004.49 NNW0.001.672.200.490.020.000.000.004.38 TOTAL4.0435.8854.744.680.590.020.040.00THIS STABILITY CLASS ACCOUNTS FOR 14.53 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-132Revision 11 (05/01)WIND DISTRIBUTION BY STABILITY CLASS AT WATERFORD 3 7/72-6/75 & 2/77-2/78ANNUAL, TOTAL FOR PERIOD STABILITY CLASS G PERCENTAGE FREQUENCY DISTRIBUTION NUMBER OF OBSERVATIONS = 3490+---------------------------- WIND SPEED (MPH) ----------------------------+ WIND0.83.17.112.118.124.1ABOVEDIRECTION CALM3.07.012.018.024.032.032.0TOTAL

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CALM12.380.000.000.000.000.000.000.0012.38N0.001.170.890.000.000.000.000.002.06 NNE0.001.520.860.030.000.000.000.002.41 NE0.002.261.200.000.000.000.000.003.47 ENE0.002.491.380.000.000.000.000.003.87 E0.001.320.400.140.000.000.000.001.86 ESE0.002.121.290.370.110.000.000.003.90 SE0.004.502.920.170.000.000.030.007.62 SSE0.007.194.240.140.000.000.000.0011.58 S0.005.703.090.030.000.000.000.008.83 SSW0.005.472.350.000.000.000.000.007.82 SW0.005.791.780.000.000.000.000.007.56 WSW0.006.451.400.030.000.000.000.007.88 W0.004.961.260.000.000.000.000.006.22(DRN 01-282)WNW0.004.380.830.030.000.000.000.005.24 (DRN 01-282)NW0.003.011.030.000.030.000.000.004.07NNW0.002.490.690.060.000.000.000.003.24TOTAL12.3860.8325.621.000.140.000.030.00THIS STABILITY CLASS ACCOUNTS FOR 10.74 PERCENT OF THE TOTAL 32503 WSES-FSAR-UNIT-3TABLE 2.3-133AVERAGE MONTHLY DATA RECOVERYWATERFORD ON-SITE METEOROLOGICALMONITORING PROGRAM(JULY 1972-JUNE 1975 and FEBRUARY 1977-FEBRUARY 1978)Number ofNumber ofData RecoveryMonthObservationsPossible Observations(Percent)January2,7342,97691.2February2,5852,68896.2March2,6792,97690.0April2,7332,88094.9May2,7652,97692.9June2,7132,88094.2 July2,8822,97696.8August2,5802,97686.7September2,6162,88090.8October2,6472,97688.9 November2,7312,88094.8 December2,8382,97695.4Period32,50335,04092.8 WSES-FSAR-UNIT-3 TABLE 2.3-134 Revision 11-A (02/02)(DRN 01-464)

WATERFORD SES - UNIT-3 ANNUAL AVERAGE DILUTION FACTORS (SEC/M 3)JULY 1972 - JUNE 1975 AND FEBRUARY 1977 - FEBRUARY 1978(DRN 01-464)

Sector Distance (miles)Affected0.5 1.0 2.0 3.0 4.0 5.0 10.0 20.0 30.0 40.0 50.0S9.31E-062.46E-065.45E-072.49E-071.48E-07 1.OOE-073.52E-081.44E-088.54E-095.93E-094.48E-09SSW1.15E-05 3.OIE-066.67E-073.05E-071.81E-071.23E-074.32E-081.77E-081.05E-087.31E-095.52E-09SW1.53E-053.97E-068.81E-074.04E-072.40E-071.64E-075.79E-082.38E-081.42E-089.92E-097.51E-09 WSW1.55E-053.99E-068.90E-074.11E-072.45E-071.68E-075.99E-082.48E-081.49E-081.04E-087.88E-09 W8.63E-062.26E-065.07E-072.34E-071.39E-079.52E-083.39E-081.40E-088.35E-075.82E-094.40E-09 WNW1.63E-054.30E-069.64E-074.43E-072.64E-071.80E-076.35E-082.60E-081.55E-081.08E-088.16E-09 NW2.27E-055.81E-061.30E-066.03E-073.62E-072.48E-078.97E-083.75E-082.26E-081.59E-081.21E-08NNW2.85E-057.11E-061.58E-067.42E-074.49E-073.10E-071.14E-074.82E-082.93E-082.07E-081.58E-08 N2.36E-055.90E-061.32E-066.19E-073.74E-072.58E-079.47E-07 4.OIE-082.44E-081.72E-081.31E-08NNE2.14E-055.33E-061.19E-065.59E-073.39E-072.34E-078.59E-083.65E-082.22E-081.56E-081.19E-08 NE1.94E-054.75E-061.05E-064.98E-073.03E-072.1OE-077.78E-083.33E-082.04E-081.44E-08 1.IOE-08ENE2.07E-055.06E-061.12E-065.34E-073.25E-072.25E-078.38E-083.60E-082.20E-081.56E-081.20E-08 E1.58E-053.85E-068.5]E-07 4.OSE-072.46E-071.71E-076.36E-082.73E-081.67E-081.19E-089.08E-09ESE1.48E-053.66E-068.06E-073.80E-072.31E-071.59E-075.87E-082.50E-081.53E-081.08E-088.24E-09 SE1.40E-053.56E-067.89E-073.66E-072.20E-071.51E-075.43E-082.27E-081.37E-089.61E-097.30E-09 SSE1.38E-053.56E-067.86E-073.62E-072.16E-071.47E-075.24E-082.16E-081.30E-089.06E-096.87E-09(DRN 01-464)(DRN 01-464)

WSES-FSAR-UNIT-3 TABLE 2.3-135 Revision 11-A (02/02)

WATERFORD SES - UNIT 3 ANNUAL AVERAGE DILUTION FACTORS AT THE MINIMUM SITE BOUNDARY (914m)(JULY 1972-JUNE 1975 AND FEBRUARY 1977-FEBRUARY 1978)

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(DRN 01-464)Direction Dilution FactorFrom Site (Sec/m 3)__________________________(DRN 01-464)N1.95 x 10

-5NNE1.77 x 10

-5NE1.60 x 10

-5ENE1.72 x 10

-5E1.31 x 10

-5ESE1.22 x 10

-5SE1.15 x 10

-5SSE1.13 x 10

-5S7.65 x 10

-6SSW9.43 x 10

-6SW1.26 x 10

-5WSW1.27 x 10

-5W7.10 x 10

-6WNW1.34 x 10

-5NW1.88 x 10

-5NNW2.35 x 10

-5 WSES-FSAR-UNIT-3TABLE 2.3-136 (Sheet 1 of 2) Revision 14 (12/05)SHORT-TERM (ACCIDENT) DILUTION FACTORS (Sec/m

3) (1977-2001)(DRN 03-2055, R14)Exclusion Area Boundary (EAB)

/QWind Frequency DistributionReactor Building0.5%Time Period Max/Q, Sector5% Site Limit0-2 Hrs4.31E-04, E3.19E-04Notes:(1) Units for relative concentration,/Q, values are in seconds per cubic meter (sec/m 3).(2) 0.5%/Q values represent the maximum selected from among all sector-dependent values(as indicated).Low Population Zone (LPZ) X/QWind Frequency DistributionReactor Building0.5%Time Period Max/Q, Sector5% Site Limit0-8 Hrs6.58E-05, E5.03E-058-24 Hrs4.45E-05, E3.53E-051-4 Days1.91E-05, E1.64E-054-30 Days5.88E-06, ENE5.44E-06Notes:(1) Units for relative concentration,/Q, values are in seconds per cubic meter (sec/m 3).(2) 0.5%

/Q values represent the maximum selected from among all sector-dependent values(as indicated).(DRN 03-2055, R14)

WSES-FSAR-UNIT-3TABLE 2.3-136 (Sheet 2 of 2)Revision 14 (12/05)SHORT-TERM (ACCIDENT) DILUTION FACTORS (Sec/m

3) (1977-2001)(DRN 03-2055, R14)Control Room5% PROBABLITY - LEVEL

/Q VALUES (SEC/M 3)East MSSVWest MSSVEast ADVTime PeriodEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air Intake0 to 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s4.36E-021.37E-031.52E-037.40E-031.06E-011.23E-032 to 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />s3.08E-029.34E-049.44E-045.44E-037.45E-028.31E-048 to 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s1.33E-024.48E-044.00E-042.46E-033.30E-024.00E-041 to 4 days9.01E-032.99E-042.81E-041.92E-032.31E-022.63E-044 to 30 days6.57E-032.10E-042.07E-041.50E-031.62E-021.85E-04West ADVEast MSLWest MSLTime PeriodEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air Intake0 to 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s1.36E-037.50E-035.09E-021.44E-031.54E-039.28E-032 to 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />s8.29E-045.62E-033.26E-029.78E-049.62E-046.84E-038 to 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s3.55E-042.57E-031.39E-024.68E-044.11E-043.11E-031 to 4 days2.48E-042.04E-038.81E-033.05E-042.89E-042.37E-034 to 30 days1.85E-041.57E-036.87E-032.18E-042.15E-041.85E-03Plant StackFHB Truck BayFHB Personnel DoorTime PeriodEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air Intake0 to 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s2.77E-032.06E-037.50E-047.63E-049.75E-041.05E-032 to 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />s1.78E-031.56E-036.15E-046.32E-047.74E-048.72E-048 to 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s7.22E-047.16E-042.62E-042.95E-043.33E-044.02E-041 to 4 days5.27E-045.49E-041.82E-042.27E-042.22E-043.08E-044 to 30 days4.05E-044.32E-041.25E-041.70E-041.55E-042.29E-04Containment HatchContainment PurgeTime PeriodEast CR Air IntakeWest CR Air IntakeEast CR Air IntakeWest CR Air Intake0 to 2 hour2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />s1.22E-031.93E-031.55E-021.68E-032 to 8 hour9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />s8.54E-041.60E-031.01E-021.20E-038 to 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />s3.64E-047.42E-044.18E-035.75E-041 to 4 days2.43E-045.61E-042.72E-033.90E-044 to 30 days1.86E-044.24E-042.13E-032.67E-04(DRN 03-2055, R14)

WSES-FSAR-UNIT-3TABLE 2.3-137STORMS IN EXCESS OF 50 MPH SINCE 1963Maximum Recorded Wind Speed (mph)StormDateIn Louisianaat New OrleansHilda10/3-10/4/6413540/G-54Betsy9/9/65 136/G-145125Camille8/17/69 87/G-10942/G-59 Edith9/16/71 69/G-9632/G-51 Carmen9/8/74 8533REFERENCE1)North Atlanta Tropical Cyclones (1964, 1965, 1969, 1971 and 1974 issues),U.S. Department of Commerce, NOAA, Environmental Data Service Washington, DC.NOTES:1)40/g - 54 means: 40 mph sustained winds, gusts to 54 mph.

WSES-FSAR-UNIT-3TABLE 2.3-138WATERFORD ONSITE METEOROLOGICAL MONITORING SYSTEMOVERALL SYSTEM ACCURACIES OF ONE HOUR AVERAGESDigital Data Acquisition Analog Data Acquisition SensorPRE 19771977-1978PRE 1977*1977-1978**_______________________________________________________________W103 Wind Speed0.03 mph0.04 mph0.350.16 mphW104 Wind Direction0.21 degrees0.28 mph2.94 degrees1.32 degrees Gill Bivane Wind Speed0.03 mphN/AN/AN/A Gill Bivane0.47 degrees0.47 degreesN/AN/AWind DirectionGill Bivane0.13 degrees0.13 degreesN/AN/A Elevation AngleW101-P Wind Speed1.0 mphN/A1.42 mphN/A W101-P Wind0.80 degreesN/A3.69 degreesN/ADirectionAmbient Temperature0.05 F0.03 F0.27 F0.13 F Delta Temperature0.03 F0.03 F0.13 F0.09 F P501 Rain GageN/A0.002 in./hrN/A0.02 in./hr NOTE:N/A = Not Applicable

• Since the method used to define each average depended on the specificparameter and the structure of the chart trace, the overall system accuracypresented here conservatively assumes one sample reading defines the one hour average. **Since the method used to define each average utilized six to ten sample readings,the overall system accuracy presented here conservatively assumes six sample readings defines each one hour average.

WSES-FSAR-UNIT-3TABLE 2.3-139

SUMMARY

OF METEOROLOGICAL MONITORINGPROGRAM PARAMETERS MEASURED AT PRIMARYAND BACKUP SYSTEMS*

LevelTowerAbove GroundParameterSystem(Feet)_____________________ _____________Wind DirectionPrimary33Primary199 Backup33Wind SpeedPrimary33Primary199 Backup33Ambient TemperaturePrimary33Delta TemperaturePrimary (2 independent 33-199 sets)

Backup33-199PrecipitationPrimaryGround Level

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*Sigma theta values are derived from the wind direction measurements at the 33 ft and 199 ft levels at the Primary Tower Systems and the 33 ft level at the Backup Tower System.

Revision 11-A (02/02)

WSES-FSAR-UNIT-3(DRN 01-156)

TABLE 2.3-140 HAS BEEN INTENTIONALLY DELETED(DRN 01-156)

WSES-FSAR-UNIT-3 TABLE 2.3-141 Revision 11-A (02/02)

WATERFORD OPERATIONAL METEOROLOGICAL MONITORING SYSTEM ACCURACIES(DRN 01-156) NRC-Regulatory Guide 1.23 (a)(b)______________Wind Direction +/-5 AzThreshold1 mph

Damping Ratio 0.4 to 0.6 Delay Distance 6.6 ftWind Speed +/-0.5 mph at 25 mphThreshold 1 mph

+/-2.0% wind speed at >25 mph Ambient Temperature +/-0.9F0.15CT Temperature Difference

+/-0.27F/50 m Precipitation (Resolution) 0.01 inch(Accuracy)

+/-10% of the accumulated catchDew Point +/- 2.7 °F

____________________________(a)Pursuant to USNRC Regulatory Guide 1.23 Proposed Revision 1, September 1980, all equipment must have accuracies less than or equal to the

stated value.(b)The accuracies specified above are equal to or more restrictive than those specifiedin US NRC Regulatory Guide 1.97, Rev. 3. MET tower accuracies, therefore meet

those specified in RG 1.97.(DRN 01-156)