ML062920069

Email: (PA) VY Annual Ecological Reports from the 1980s (1981)

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Lynn DeWald Entergy Nuclear Vermont Yankee, LLC 320 Governor Hunt Road Vernon, VT 05354 802-258-5526 (phone) 802-258-5865 (fax) 802-380-4493 (cell)

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ECOLOGICAL STUDIES OF THE CONNECTICUT RIVER.

VERNON/ VERMONT REPORT X

JANUARY 1980 -

DECEMBER 1980 PREPARED FOR VERMONT YANKEE NUCLEAR POWER CORPORATION BY AQUATEC, INC.

SOUTH BURLINGTON, VERMONT 1981

ECOLOGICAL STUDIES OF THE CONNECTICUT RIVER REPORT X VERMONT YANKEE NUCLEAR POWER CORPORATION TABLE OF CONTENTS

1. INTRODUCTION AND

SUMMARY

/

1

2.

CONNECTICUT RIVER DISCHARGE 9

3.

RIVER TEMPERATURE 13

4.

WATER QUALITY STUDIES 57

5.

PLANKTON STUDIES 101 5.1 Phytoplankton Studies 101 5.2 Zooplankton Studies 114

6.

ENTRAINMENT STUDIES 125 6.1 Phytoplankton and Zooplankton Entrainment 125 6.2 Ichthyoplankton Entrainment 131

7.

BENTHIC FAUNA STUDIES 133

8.

FISH STUDIES 145 8.1 Fish Impingement Studies 145 8.2 Resident Finfish Studies 148 LITERATURE CITED 171 iii

LIST OF FIGURES 1.1 Vermont Yankee Power Level Histogram, 1980 3

1.2 Vermont Yankee Sample Stations, Connecticut River 4

2.1 Connecticut River Discharge, Vernon, Vermont, 1980 10 3.1 Temperature, Station.No. 3, 1980 14 3.2 Temperature, Station No.

7, 1980 15 4.1 Dissolved Oxygen, Station No.. 3, 1980 62 4.2 Dissolved Oxygen, Station No.

7, 1980 63 4.3 pH, Station No.

3, 1980 64 4.4 pH, Station No.

7, 1980 65.

4.5 Comparison of Observed Station 3 Sodium Ion Concentrations with Station 3 Concentrations Predicted from Preoperational/Closed Cycle Data, Stations 7 and 3, 1969-1974 66 4.6 Comparison of Observed Station 3 Sulfate Ion Concentrations with Station 3 Concentrations Predicted from Preoperational/Closed Cycle Data, Stations 7 and 3, 1969-1974

_;67 4.7 Comparison of Observed Station 3 Chloride Ion Concentrations with Station 3 Concentrations Predicted from Preoperational/Closed Cycle Data, Stations 7 and 3, 1967-1974 68 4.8 Comparison of Observed Station 3 Alkalinity Concentrations with Station 3 Concentrations Predicted from Preoperational/Closed Cycle Data, Stations 7 and 3, 1967-1974 69 51 Plankton Sample Station Locations 102 5.2 Seasonal Phytoplankton Distribution, Station No.

7 -

Monitor 104 5.3 Seasonal Phytoplankton Distribution, Station.

No.

3 -

Monitor 105 5.4 Comparison of Observed Monitor 3 Phytoplankton, Count with Monitor.3 Count Predicted from Preoperational/

Closed Cycle Monitor Data of 1970-1974 109 5.5 Seasonal Zooplankton Distribution, Station No.

7 - Monitor 116 5.6 Seasonal Zooplankton Distribution, Station No.

3 - Monitor 117 5.7 Comparison of Observed Monitor 3 Zooplankton Count with Monitor 3 Count Predicted from Preoperational/

Closed Cycle Monitor Data of 1970-1974 119 7.1 Benthic Fauna Sample Station Locations 134 V

LIST OF FIGURES (CONT'D) 8.1 Fish Sample Stations, Connecticut River 149 8.2 Resident Fish Species.

Composition by Weight, 1980 Survey 159 8.3 Resident Fish Species.

Composition by Number, 1980 Survey 159 8.4 Resident Fish Species.

Percentage Composition by Weight 160 8.5 Resident Fish Species.

Percentage Composition by-Number 160 8.6 Age-Growth Graphs - White Perch 163 8.7 Age-Growth Graphs - Yellow Perch 165 8.8 Age-Growth Graphs - Walleye 167 8.9 Age-Growth Graphs - Smallmouth Bass 169 LIST OF TABLES 3.1 Temperature Data, Station No.

3, 1980 2Q 3.2 Temperature Data, Station No.

7,.1980.

32 3.3 Differences in Successive Hourly Mean Temperatures in 0F at Monitor 3 44 3.4 Frequency Distribution of Rate of Change of Temperature at Monitor 3 During Open Cycle Operation, '1980..

17 3.5 Differences in Hourly.Mean..Temperaturee' in.F Between Monitor 3 and-Monitor 7 50 3.6 Frequency Distribution of Differences in Hourly Mean Temperatures Between Monitor 3 and Monitor 7 During Open Cycle Operation, 1980 19 4.1 Dissolved Oxygen and pH Data, Station No.

3, 1980 70 4.2.

Dissolved Oxygen and pH Data, Station No." 7, 1980 82 4.3 Conductivity and Turbidity Data, 'January & February 1980 94 4.4 Results, Water Quality Analysis, 1980 96 4.5 Summary of Statistics from-Linear Regression-Analysis of Preoperational and Closed Cycle Data at Stations 7 and 3 for Four Parameters 59 5.1 Dominant Phytoplankton Species, 1980 103' 5.2 Comparison of Observed Monitor 3 Phytoplankton Count with Monitor 3 Count Predicted by Regression Analysis of Low-Range Preoperational/Closed Cycle '

Monitor Data, 1970-1974 108 5.3 Checklist of the Phytoplankton of the Connecticut River near Vernon, Vermont, 1980 112 vi

LIST OF. TABLES (CONT ' D) 5.4 Mean Percentages and Percentage Ranges of Diatoms, Flagellates, Green and Blue-Green Algae, 1980 111 5.5 Dominant Zooplankton Taxa, 1980 115 5.6 Comparison of Observed Monitor 3 Zooplankton Count with Monitor 3 Count Predicted by Regression Analysis of Preoperational/Closed Cycle Monitor Data, 1970-1974 118 5.7 Checklist of the Zooplankton of the Connecticut River near Vernon, Vermont, 1980 122 5.8 Mean Percentages and Percentage. Ranges of Protozoa, Copepoda, Cladocera, and Rotatoria, 1980 121 6.1 Summary of Results, Vermont Yankee Entrainment Studies, 1980 128 6.2 Percent Changes in Live Plankton Concentrations Between Entrainment Intake and Discharqe Samples 129 6.3 Calculated Percent Changes in Live Plankton Concentrations of River Effected.by Entrainment 130 6.4 Vermont Yankee Ichthyoplankton Entrainment Studies, 1980 132 7.1 Checklist of the Benthic Fauna of the Connecticut River near Vernon, Vermont,'1980 140 7.2*

Comparison of Number of Samples and Number of Genera of Benthos Collected by Ekman Dredge 135

7.3 Summary of Results of Analysis, Benthic Fauna Samples, 1980 138 8.1 Summary of Weight and Total Length Extremes of Fish Species Impinged During Open Cycle Operation,..1980 146 8.2 Summary by Month of Number and Weight of Fish Species Impinged During Open Cycle Operation, 1980 147

.8.3 Summary of Fishing Effort and Results, 1980 150 8.4 Fishes of the Connecticut River in the Vicinity of-Vernon, Vermont, All Collections, 1980 153 8.5 Fishes of the:Connecticut River in the Vicinity of Vernon, Vermont, All Collections North of Vernon Dam, 1980 154 8.6 Fishes of the Connecticut River in the Vicinity of Vernon, Vermont, All Collections South of Vernon

Dam, 1980.

155 8.7 Frequency Distribution of Fish Species by Total Length, 1980 156 8.8 Age-Growth Data - White Perch 162 8.9 Age-Growth Data-Yellow Perch 164 8.10 Age-Growth Data - Walleye 166 8.11 Age-Growth Data -

Smallmouth Bass 168 vii

1.

INTRODUCTION AND

SUMMARY

An extended shutdown of Vermont Yankee's operation in 1980 (from September 27 through December 27) for refueling, repairs, and maintenance reduced plant availability to 71.5%, the lowest level since 1973 when generation occurred only 61% of the time.

The open cycle mode of condenser cooling was used on 137 days of operation in 1980; closed cycle cooling was used on 133 days.

The plant operated at an average power level of 93.8% during the 6280 hours0.0727 days <br />1.744 hours <br />0.0104 weeks <br />0.00239 months <br /> of generation in 1980.

But the prolonged shutdown reduced the average capacity for the year to 67.0%.

Figure 1.1 is a graph of the plant's record of power production in 1980.

This is the tenth report in a series (Webster-Martin 1971, Aquatec 1973-78, 1979a, 1980) that have presented the results of environmental studies conducted under the conditions of Vermont Yankee's discharge permits, from the States of Vermont and New Hampshire, and the Appendix B Technical Specifications of Vermont Yankee's operating. license.

In amendment No, 56 to the operating license, dated February 22, 1980, the Appendix B Technical Spec-ifications.were deleted.

Some studies mandated by the Tech Specs, but not required under Vermont Yankee's NPDES discharge permit, were continued until early July and are reported here.

Eight sampling stations in the Connecticut River near Vernon, Vermont were-used in earlier studies.

The approximate locations of these stations are shown in Figure 1.2.

Collections were made at only six of these stations in the 1980 studies.

The locations of these six in river miles north and south of Vernon Dam are shown below.

-i-

VERMONT YANKEE POWER LEVEL HISTOGRAM 1980 100 -

75-/

o

_J CtL 5--

Ld 0~0 25 0

i

,7."

0 0

,nf1 I

MONTH FIGURE 1.1

VERMONT YANKEE BRATTLEBORO GUILFORD i#e)-SAMPLE STATIONS

~CONN.

RIVER CHESTERFIELD C

T0 1/2 2

SCALE IN MILES

-o.

NEW HAMPSHIRE 5

n4.

HINSDALE II I

.1 I

VERNON I

VERMONT YA'NKEE ý NUCLEAR PLANT"./

'culpsoft' DAMd VERMONT cOuPvry--

ý-soulvrv MASSACHUSETTS FIGURE 1. 2

- ;4 - -.

Station No.

Location Relative to Vernon Dam 2

4.70 miles south 3

0.65 miles south 4

0.55 miles north 5

1.25 miles north 7

4.25 miles north 8

8.70 miles north

SUMMARY

OF RESULTS Water Quality Studies-The annual peak river flows of spring run-off occurred at Vernon in April, as is usually the case.

But the mean discharges in April and in all other months of 1980 were less than the 16 year average discharges for the corresponding months in the period October 1964 through 1979.

The relatively low river flow rates in 1980 resulted in mean monthly temperatures at Station 3, downstream of Vermont Yankee, that were higher in the first nine months of 1980 than the mean river temperature for. those months in the years 1968-1979.

The maximum hourly temperature observed at Monitor 3 in February, 41.8 0 F, was greater than the previous maximum for that month, 41.5 0F in 1977.

All other maximum and all minimum temperatures observed at Station 3 were within previously recorded extremes.

At Station 7, upstream, mean monthly temperatures were -higher than 1970-1979 means in April, May, July, August, and September.

No record maximum or minimum hourly temperatures occurred at Station 7 in 1980.

Vermont Yankee operated in 1980 within the three thermal criteria imposed upon such operation by its NPDES permit.

These conditions require that Vermont Yankee's discharge not effect a temperature at Monitor 3 greater than 65 0 F; the maximum hourly mean temperature observed there during open cycle operation was

- 57.0*F on May 6.

The maximum allowable rate of temperature change between successive hourly average temperatures at Monitor 3 is 50F per hour; the maximum observed was 2.9 0F per hour in February and March.

The maximum allowable increase in river temperature effected by Vermont Yankee's discharge is 13.4 0 F; the maximum difference observed between downstream Monitor 3 temperature and upstream Monitor 7 temperature was 10.4 0 F on March 2.

No record monthly maximum or minimum dissolved oxygen concen-trations were observed in 1980 at either Station 3 or 7.

The pH maximum of 7.7 at Station 3 in January was 0.2 pH units greater than the January maximum previously observed there, but all monthly minima were greater than those previously recorded.

Grab samples at Stations 3 and 7 were collected on four dates in 1980 -

two during open cycle operation, one during closed cycle cooling, and one when Vermont Yankee was not operating -

and analyzed for sixteen water quality parameters.... The concentrations of all parameters were found to be within ranges observed in earlier years..-

Biological Studies Diatoms predominated, as in earlier study years,. in the phyto-plankton samples of 1980.

Of these, the more commonly observed species were again Asterionella formosa, Fragilaria capucina and F. crotonensis, Melosira italica and M. varians, and Tabellaria fenestrata.

Also, as in prior years, the more commonly observed flagellates were Dinobryon spp., the more common green algae were Pediastrum spp.,

and the more common blue-greens were Oscillatoria spp.

Algal concentrations in the phytoplankton samples of 1980 were generally low relative to concentrations observed in the years 1970-1974.

Only the January counts at Stations 3 and 7 were greater than the mean counts for the years 1970-1974.

These TJanuary counts were within two standard deviations of the mean January counts observed in 1970-1974.

The September 17 phytoplankton concentra-tion at Station 3 was greater, however, than that predicted by application of a statistical analysis of the 1970-1974 data to the September Station 7 count.

No zooplankton concentration observed at downstream Station 3 in 1980 was outside the 95% confidence limits for'a concentration predicted from upstream counts by statistical analysis of 1970-1974 zooplankton data.

However, zooplankton concentrations observed in February and April at Station 7 and in March at Station 3 were more than two standard deviations greater than the corresponding mean concentrations *in the years 1970-1974.

Protozoans, particularly Campanella sp. and.Vorticella sp.,

were the predominant organisms in the samples of late fall and winter.

In the samples of the warmer months of the year, rotifers predominated.

The more commonly observed rotiferswere, as in earlier years, Keratella cochlearis, Philodina spi., Polyarthra.sp.,

and Synchaeta sp.

Copepods, adults and nauplii, were found in all seasons.

Eighty-six genera of benthic fauna were observed in the thirty-eight samples of benthos collected in 1980, twenty-eight by Ekman dredge and ten by Henson trap.

The number of genera found in Ekman dredge samples from Stations 2, 3, and 4, locations which-might be affected by Vermont Yankee's heated discharge, were greater than had-been found in earlier years when a comparable sampling effort had been made.

Chironomid and caddis fly larvae were found, as has been observed in earlier years, to be the pre-dominant forms in the spring and summer samples' Planarians, fingernail clams, and oligochaetes Were dominant in fall samples.

All fish impinged'on the traveling screens at Vermont Yankee's intake structure during open cycle operation in January through May 1980 were collected, identified, weighed, and measured.

Fifty-nine percent of the fish impinged in 1980 were spottail shiners.

Nineteen different species were impinged, but all had been observed in earlier Vermont Yankee studies.

The daily mean numbers and weights of fish impinged in each month of.open cycle operation in 1980 were all within two standard deviations of the daily means observed for those months in the five phases of open cycle testing

-in 1974-1978.

Ninety-six collections of finfish were made in the 1980 survey.

Sixty-eight collections were made by trap net, twenty-seven by gill net, and one by seine haul.

The collections were made at Vermont Yankee Stations 3, 4,

5, and 8 and 1602 fish were captured.

Nineteen species of-fish were collected in 1980, four-teen in collections north of Vernon Dam and sixteen in collections south of the dam.

All species, except northern pike, had been found in earlier surveys.

One specimen of northern pike was collected near Vermont Yankee Station 3 on 16 September 1980.

The percentage by number of white perch in the 1980 survey:

was greater than the percentage of this species in any prior survey.

This increase is due primarily to the capture in 1980 of relatively fewer pumpklnseed and bluegill than in earlier surveys.

The percentage by weight of "all other species" in 1980 was also larger than in prior surveys.

This is attributable to the rela-tively large biomass of.walleye taken in the 1980 survey, 7.7% of the total weight of all fish captured.

The age-growth data of 1980 for yellow perch, white perch, and smallmouth bass were not significantly different from the i969-1973 data for these species.

However, again-in 1980, as in the years 1977-1979, the age-growth data for walleye indicate an enhanced growth rate relative to the data of 1969-1973.

In conclusion, the 1980 studies do not indicate that Vermont Yankee's operation has had a significant adverse effect on the water quality or. aquatic biota of the Connecticut River.

2.

CONNECTICUT RIVER DISCHARGE Connecticut River discharge in 1980 at Vernon, Vermont, computed from the records of the Vernon Hydroelectric Station at Vernon Dam, is summarized in Figure 2.1.

The mean flow rate, the maximum daily average flow rate, and the minimum daily average flow rate are shown for each month.

The annual maximum discharge rate in 1980 occurred, as is usually the case at Vernon, in April.

Mean discharge for that month was 20,380 cfs.

The maximum mean daily discharge was 50,480 cfs on 11 April and the maximum hourly discharge, 52,090 cfs, occurred at 1600 on that date.

Connecticut river flow rates have been reported for the years 1967-1979 in previous volumes of this series of reports.

Flow rates throughout.1980 were low relative to the discharges that occurred in those years.

Mean flows for all twelve months of 19-80 were smaller than the corresponding 16 year means for 1964-1979.

However, in no month of 1980 was the mean flow rate smaller than the record mean minimum for that month in one of the previous 16 years.

Also, the maximum daily average flow rates for all twelve' months were less than maxima that had been observed previously in the years 1964-1979 and the minimum daily discharges for the months April and May 1980 were smaller than had been recorded for those months in the preceding 16 years.

The April 1980 minimum was 7350 cfs; the smallest daily mean observed in 1964-1979 was 7780 cfs in 1971.

The May 1980 minimum daily discharge of 1360 cfs was less than the record low for that month of the previous 16 years, 1880

_cfs in 1977.

80 CONNECTICUT RIVER DISCHARGE VERNON, VERMONT 1980 70 -

60 50-00 0

'C 40 -

30 -

A I'

I' I'

• 1 I

I.

/

I

/

.1*

/

/

I

1.

0 4

0

~~~'0

'0 0.

20-I0 0-

.'* i.

0~.00

-,0 -*---

0 I

2 3

4 5

6 6

7" B

9 I

to II MONTHS MONTHLY MAXIMUM.

MONTHLY AVERAGE MONTHLY MINIMUM

-B-FIGURE 2.1 When river flow rates are less.then 10,000 cfs the Vernon Hydroelectric Station is operated as a peak load facility.

Often at such times, only one hydroelectric unit is utilized during off-peak hours.

Operation of this one unit meets a condition of the operating license issued by the Federal Energy Regulatory Commission on June 25, 1979 to the Vernon Hydroelectric Station.

This license requires the maintenance of a continuous minimum flow of 1,250 cfs in the river.

The requirement that Vermont Yankee be responsible for providing a sustained minimum flow of 1,200 cfs when operating, set forth in the.Appendix B Tech Specs of its operating license, was deleted in February 1980.

Periods of minimum flow occurred in all months of 1980, even in April when 7 hours8.101852e-5 days <br />0.00194 hours <br />1.157407e-5 weeks <br />2.6635e-6 months <br /> of minimum discharge occurred on April 22.

Minimum discharge occurred during more than 50% of the hours of the months February, June, July, August, and September.

On 108 days of the first six months of 1980, 124 periods of minimum flow occurred in a total of 1386 hours0.016 days <br />0.385 hours <br />0.00229 weeks <br />5.27373e-4 months <br />, 31.9% of the time.

The duration of the minimum flow periods in these months ranged from 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to 62 hours7.175926e-4 days <br />0.0172 hours <br />1.025132e-4 weeks <br />2.3591e-5 months <br />; the mean duration was 11.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />.

In the latter six months of 1980, minimum flows were recorded during 2103 hours0.0243 days <br />0.584 hours <br />0.00348 weeks <br />8.001915e-4 months <br />, 46.7%. of the time.

There were 189 periods of minimum discharge on.161 days, with durations ranging from 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> to 52 hours6.018519e-4 days <br />0.0144 hours <br />8.597884e-5 weeks <br />1.9786e-5 months <br />..

The average.duration' w4 11i,' hours,-

3.

RIVER TEMPERATURE Temperatures of Connecticut River water are measured continu-ously by two automatic water quality monitoring systems, installed in buildings on the Vermont shore of the river at Sample Station 7, upstream of Vermont Yankee, and at Station 3, downstream of the plant.

The temperature data of 1980, reduced to hourly, daily, and monthly means, are shown in Tables 3.1, for Station No.

3, and 3.2, for Station No; 7, at the end of this section of the report.

These data are summarized graphically in Figures 3.1 and 3.2.

The maxima and minima in those figures are hourly means.

Temperature data have been collected continuously since 1968 at Station 3 and since 1970 at Station 7.

Figures 3.1 and 3.2 also show. in shaded areas, the maximum and minimum hourly mean temperature that has been observed for that month in any of the previous years of study.

The shaded area is divided by a line that connects the points of mean monthly temperatures computed from the data of all previous years for that month.

Monthly mean temperatures observed at the downstream location, Station 3,.for the first nine months of.1980 were greater than the l9.68-1979*month~y.means.

The February mean temperature, 37.1 0 F, was higher than the previous record February mean of 36.2 0 F, which occurred in 1977.

The record March mean, 35.90 in 1977, was also exceeded by the 1980 mean of 37.1 0 F.

The maximum hourly tempera-ture in February,.41.8 0F, was greater than the previous maximum for that month, 41.5 0F in 1977.

All other monthly maximum temperatures and all monthly miminum-temperatures at Station 3 in 1980 were within extremes previously recorded.

• OF.

0 1 TEMPERATURE STATION NO. 3 o C 1980

--30 20...

K20 80 -

70 -

60 50 4- -0 40 2

.3 4

6 7

8 9

10 IO MONTH 12 SHADED AREA Maximameans and minima observed in 1968 - 1979.

• See text.

FIGURE 3.1 MONTHLY MAXIMUM MONTHLY AVERAGE MONTHLY MINIMUM

TEMPERATURE STATION NO. 7 OF oc 1980 90

}-

1 80 70

- 20 u1I 60 -

50 -+-10 40 -

32 4-.0 2

3 4

p6 9

MONTH 10 II 12 SHADED AREA Maxima,means and minima observed in 1970 - 1979 See text.

MONTHLY MAXIMUM MONTHLY AVERAGE MONTHLY MINIMUM FIGURE 3.2

Monthly mean temperatures in 1980 at the upstream location, Station 7, were higher than the means for the years 1970-1979 during five months -

April, May, July, August, and September.

All Station 7 monthly means were within extremes of previous years except the December mean of 32.50F.

The lowest previous December mean was 33.3 0 F in 1972.

The hourly maximum and minimum tempera-tures observed at Station 7 in 1980 were all within extremes recorded in earlier years.

In 1980, Vermont Yankee operated in the open cycle mode of condenser cooling in the periods January 1 through May 15 and December 28 through December 31.

Such operation is permitted in the period October 15 through May 15 under thermal effluent limita-tions set forth in Vermont Yankee's NPDES permit and the revised Technical Specifications of its operating license.

These criteria, which define the maximum allowable thermal impact on the Connecti-cut River, are as follow:

A.

The temperature at Monitor 3 during open cycle operaton shall not exceed 65 0 F*;

B.

The rate of change of temperature at Monitor 3 shall not exceed 50F per hour; and C.

The increase in temperature above ambient at Monitor 3:shall not exceed 13.46F.

The temperature records at Stations 7 and 3 show that these thermal limitations were not exceeded during open cycle operation in 1980.

The maximum hourly average temperature observed at Monitor 3 was 57.0 0 F on May 6.

The maximum rate of change of temperature at-Monitor 3, the difference between successive hourly average temperatures there, was. -2.9 F/hour, observed once in February and once in March.

The greatest rate of temperature increase was +2.6 0 F/hour in January.

Tabulations of the hourly rates of change in Monitor 3 temperatures during the months of open cycle operation are given in Table 3.3.

These data are summarized, for the dates of open cycle operation, as a frequency distribution in Table 3.4.

For the rate of temperature change data during open cycle operation in 1980, three measures of central tendency, the mode, median, and mean, were all O.00 F.

TABLE 3.4 FREQUENCY DISTRIBUTION OF RATE OF CHANGE OF TEMPERATURE AT MONITOR 3 DURING OPEN CYCLE OPERATION 1980 Rate of Temperature ZAN 4-29 MAR APR 1-15 28-31 TOTALS Change FEB MAY DEC

• F/hr

-2.9 1

12

-2.8

-2.7

-2.6

-2.5

-2.4

-2.3

-2.2 11

-2.1 1

1

-2.0 2

2 4

-1.9 3

3 6

-1.8 3

2 5

-1.7 1

2 3

-1.6 3

5 8

-1.5 2

3 3

8

-1.4 7

3 2

12

-1.3 2

1 4

7

-1.2 2

5 1

8

-1.1 6'

4 3

13

-1.0 6

3-5 14

-0.9 3

5 3

11

-0.8 11 6

4 21

-0.7 9

11 7

1 28

-0.6 18 10 9

37

-0.5 15 20 10 2

1 48

-0.4 16 28 19 1

3 67

-0.3 27 36 15 7

9 1

95

-0.2 79 50 43 31 17 1

221

-0.1 172 76 115 149 75 9

596 0.0 148 83 193 277 130-30 861

+0.1 66 44 89 149 70 10 428

+0.2 35 42 49 53 28 3

210

+0.3 25 43 45 20 14 147

+0.4 18 34 28 5

6 2

93

+0.5 15 24 17 3

59

+0.6 5

16 20 1

42

+0.7 5

18 7

1

.31

+0.8 8

13 12 33

+0.9 3

8 4

1 16

+1.0 5

4

• 8 17

+1.1 3

6 5

14

+1.2 8

4 3

15

+1.3 6

2 8

+1.4 2

1 1

4

+1. 5 4

1

.5

+1.6 1

1 1

3

+1.7 2

1 3

+1.8 2

1 3

+1.9 1

1 1-2.0 1

1 2

+2.1 2

1 3

+2.2 1

1 2

+2.3 2

2

+2.4 1

1 2

+2.5 1

1

+2.6 1

The hourly mean Monitor 3 temperatures (Table 3.1) minus the corresponding Monitor 7 temperatures (Table 3.2) are shown for the months of 1980 open cycle operation in Table 3.5.

These data are reduced to a frequency distribution of.temperature differences, for the dates of open cycle operation, in Table 3.6.

The greatest difference observed during 1980 open cycle operation was +10.4 0F on March 2.at 1700 and 1800.

The mode of these data was +l.6 0 F, the median was +1.8 0F, and the mean increase in temperature above ambient at Station 3 was +2.8 0 F during open cycle operation in 1980.

I.A:

TABLE 3.6 FREQUENCY DISTRIBUTION OF DIFFERENCES IN HOURLY MEAN TEMPERATURES BETWEEN MONITOR 3 AND MONITOR 7 DURING OPEN CYCLE OPERATION 1980 Hourly Mean 4-29 1-15 28-31 AT(-F)

JAN FEB MAR I APR IMAYI DEC TOTALS

-1.0 -

-0.6.

-0.5 -

-0.1 0.0

+0.1 -

+0.5

+0.6 -

+1.0

+1.1 -

+1.5

+1.6 -

+2.0

+2.1 -

+2.5

+2.6 -

+3.0

+3.1 -

+3.5

+3.6 -

+4.0

+4.1 -

+4.5'

+4.6 -

+5.0

+5.1 -

+5.5

+5.6 -

+6.0

+6.1 -

+6.5

+6.6 -

+7.0

+7.1

+7.5

+7.6 -

+8.0

+8.1 -

+8.5

+8.6 -' +9.0

+9.1 -

+9.5

+9.6.- 410.0

+10.1 -+-10.5 10 21 14 87.

199 144 70.

49 33.

25 22 21 20

.8 10 8

3 2

3 28

.4 27

.44 30 29 33 32 29 31 34 44 52 46 51 42 26.

25 12 1

3 52 107 128 76 49 31 29 33 25 18 18 18 14 14 16 21 12 30 16 13 12 2

12 7

141 167 202 131 33.

17 117 137 62 17' 5

3 2

2 29 18 8

3 22 25 288 423 566 495 287 136 110'.

101 82 69 70.

72 66 76-70 75 54 56 41 25 12 I

fl A.

A.

U A.

I TABLE 3.1-1 AVERAGE HOURLY TiEMPEIATRAU IN OF VERMONT YANKEE SAMPLE STATION 11O.

3 JANUARY 1980 HOUR I

0 DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21.

22 23 24 25 26 27 28 29 30.

31 1

2 3

4 5

6 33.8 33.8 33.7 33.6 33.9 33.8 33.7 33.7 33.8 33.8 32.1 32.0 33.4 33.5 33.5 33.4 34.2 34.3 35.4 35.3 34.1 34.0 33.9 33.9 33.7 33.7 33.6 33.6 33.7. 33.7 33.6 33.6 34.1 34.1 33.7 33.6 33.7 33.5 33.4 33.3 33.2 33.1 33.3 33.3 33.8 33.8 33.5 33.4 33.7 33.7 34.1 33.9 34.6 34.5 39.7 39.9 33.8 33.8 34;1' 33.9 33.6 33.5 33.9 33.6 33.7 33.6 33.8 32.0.

33.6 33.3 34.4 35.2 33.9 33.9 33.6 33.5 33.7 33.7 33.9 33.6 33.4 33.3 33.0 33.3 34.0 33.6 33.6 33.9 34.4 40.1 33.8 33.8 33.4 34.1 33.5 33.5 33.5 34.3 32.0 33.8 33.4 34.7 35.2 34.0 33.8 33.5 33.4 33.7 33.8 33.7 33.6 33.2 33.4 32.8 33.3 34.2 34.1 33.7 34.2 34.2 40.1 33.8 33.8 33.5 34.1 33.4 33.5 33.4 34.5 32.0 34.2 33.5 35.0 35.3 34J2 34.0 33.4 33.4 33.7 33.8 33.6 33.6 33.2 33.7 32.7 33.2 34.5 35.2 34.0 34.4 34.2 39.3 33.9 33.9 33.8 34.0 33.9 33,3 33.4 33.9 35.i 33.3 34.0 34.4. 34.5 32.0 32.0 34.7 36.0 33.8 34.8 35.5 36.1 35.6 35.9 34.6 35.1 33.8 33.7 33.4 33.4 33.5 34.1 34.0 34.5 33.9 33.8 33.7 33.6 33.6 33.6 33.2 33.2 34.0 34.4 32.8 33.1 33.4 33.6 34.8 35.2 36.5 36.7 34.4 34.9 34.8 35.2 34.3 34.5 38.8 38.3 34.1 34.5 34.0 34.2 34.1 34.3 34.4 34.6 37.7 36.3 34.4 32.0 37.7 37.1 37.1 36.5 36.6 33.6 33.5 35.9 35.4 34.0 33.5 33.6 33.2 34.8 34.3 34.5 36.5 36.1 36.0 35.5 34.7 38.2 35.7 35.2 35.4 36.2 35.2 38.5 37.5 34.4 32.0 38.0 37.8 38.4 37.4 38.6 33.6 34.3 36.5 37.1

.33.8 33.5 33.5 33.2 35.6 36.5 36.9 37.9 35.6 37.5 35.8 35.1 37.7.

37.3 36.2 37.5 37.0. 35.*6 34.8 36.4 37.1 36.3 37.1 36.0 35.5 36.7 35.7 35.1 34.0 33.2 33.0 32.0 32;0 32.1 36.6 35.4 34.8 36.4 35.5 35.0 39.4 39.3 38.7 38.2. 37.9 36.8 39.0 38.5 37.1 33.7 33.8 33.9 36.4 36.9 35.5 36.0 35.4 35.0 38.4 37.4 35.9 33.7 34.5 34.9 33.7 34.0 34.1 33.7 34.0 34.1 33.3 33.3 33.2 36.9 38.1 37.7 36.4 35.3 34.7 37.0 35.7 34.9 38.0 36.9 35.9 35.1 34.5 34.3 37.7 36.9 36.1 36.2 36.5 36.9 35.6 36.1 36.6 37.5 37.2 36.6 38.1 37;4 36.7 37.6 38.0 37.3 37.2 36.0 35.2 34.5 35.8 35.3 34.8 32.8 32.3 34.5 34.8 38.0 35.9 36.2 34.0 34.8 34.8 35.3 34.6 34.3 34.2 33.3 36.4 34.5 34.4 35.1 34.2 35.5 37.3 37.5 36.0.

36.1 36.9 34.9 34.3 35.6 35.3 34.7 32.7 32.4 34.4 34.8 37.4 35.5 35.5 34.0 34.3 34.6 34.9 34.4 34.4 34.3 33.3 35.3 34.4 34.2 34.8 34.2 35.3 37.5 38.0 35.5 35.5 36.8 34.8 34.4 34.5 34.4 35.5 35.4 35.2 35.2-35,0 34.9 34.6 34.6 34.5 32.5 32,5 32.4 32.5 32.5 32.5 34.5 34.5 34.4 34.7 34.8 34.8 37.0 36.7 36.4 35.1 34.9 34.7 34.7 34.5 34.4 34.1 34.1 34.1 34.2 34.1. 33.9 34.5 34.5 34.4 34.6 34.6 34.5 34.4 34.5 34.6 34.6 34.5 34.4 34.3 34.3 34.3 33.4 33.4 33.4 34,6 34.2 34.0 34.2 34.1 34.1 34.1 34.0 34.0 34.6 34A4 34.3 34,2 34.4 34.6 35.2 35.0 34.9 37.8 37.8 37.4 38.5 38.7 38.7 35.2 35.0 34'7 35.2 35.2. 35.2 36.4 35;8 37AO 34.7 34.7 34.5 35.9 35.1 34.8 34.4 32.5 32.7 34.3 34.7 36.2 34.6 34.3 34.0 33.8 34.3 34.2 34.4 34.4 34.3 33.4 33.8 34.0 34.0 34.2 34.5 34.9 38.2 38.8 34.6 35.5 37.0 33.8 35.7 35.0 34.7 34.2 32.3 34.2 34.1 34,8 36.0 34.5 34.1 34.0 33.8 34.3 34.2 34,4 34.5 34.2 33.5 34.2 33.9 34.0 34.1 34.6 34.9 39.0 39.0 34.4 35.8 35.6 33.2 34.7 34.3. 34.0 33.8. 33.7 35,1 34.5 34.2 34.0 33.9 34.6 34.4 34.1 33.9 33.7 34.0 33.9 33.8 33.8 33.8 32.3 32.2 32.2 32,1 32.1 34,7 34.2 34.0 33,8 33.5 33.8 33.6 33.5 33.4 33.5 34.7 34.7 34.4 34.3 34.3 35.8 35,7 35,6 35.4 35.3 34.4 34.3 34.2 34.2 34.1 33.9 33.8 33.8 33.8 33.8 33.9 33.8. 33.8 33.7 33.7 33.7 33.6 33.6 l3,6-.33.6 34.1 34,0 33,8 33.9 33,8 34.2 33.9. 33.8 33.7 33.6 34.4 34.4 34,4 34.3 34.2.

34.5. 34.3 34.0 33.8 33,7 34,1 33.9 33,9 33.8 33.8 33L4 33.3 33.3 33.3 33.3 33.8 33.6 33.5 33,4 33,2 33.8 33.6 33,5 33.4 33.4 33.9 33.9 33.9 33.8 33,8 34.1 34.0 33.8 33.8 33.7 34.4 34.0 33,9 33.9 33;5 34.7 34.4 34.3 34.2 34.0 38.8 37.3 36.2 35.2. 34.8 39.2 39.3 39.4 39.4 39.5 34.3 34.2 34.2 34.0 33.9 36.3. 35.6 35.0 34.5 34.3 34.7 34.2 33.9 33.8 33.7 32.9 32.5 32.4 32.3' 32.2 7

8

9.

10 11, 12 13 14 15 16 17 18 19 20 21 22 23 24 DAILY AVERAGE 34.6 34.7 34.9 34.5 33.2 32.6 34.6 34.7 36.4 35.5 35.1 33.9 34.1 34.4 34.7 34,2 34.0 33.9 33.3 34.5 34.0

.34.2 34;8 34.6 35.0 36.2 36.9 36.6 35.3 35.3 34.2 34.7

. ONTHLY' AVERAGE

r/77 r7ý1 r-16!

, "I, F=19 r7lM r

ri""ll I

rý71 TABLE 3.1-2 AVERAGE HOURLY TEMPERATURE IN OF VERMONT YANKEE SAMPLE STATION NO. 3 FEBRUARY 1980 DAILY AVERAGE DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 I

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 32.1 32.1 32.2 32.5 32.5 32.5 32.7 32.7 32.3 32.3 34.3 34.4

• 37.4 37.8 S3.8 33.6 34.4 34.4 37.0 36.7 35.5 35.0 34.4 34.3 34.9 34.7 36.2 36.0 36.9 36.5 39.3 39.4 40.0 39.7 40.2 39.5 39.7 39.3 33.8 33.7 33.6 33.6 39.5 39.0 38.2 38.3 37.3 36.9 39.3 39.2 35.6 35.6 36.5 36.1 34.5 34.4 37.1 36.8 32.0 32.2 32.5 32.7 32.3 34.6 38.3 33.5 34.3 36.6 34.7 34.2 34.5 35.8 36.3 39.4 39.2 39.3 39.1 33.7 33.4 39.0 38.5 36.8 38.9 35.4 35.9 34.2 36.5 32.3 32.2 32.5 32.6 32.2 35.1 38.6 33.9 34.4 36.8 34.6 34.1 34.5 35.7 36.3 39.7 39.1 39.0 38.9 33.6 33.4 38.6 38.8 36.9 38.4 35.2 35.9 34.2 36.2 32.0 32.2 32.5 32.6 32.2 35.4 38.8 34.4 34.7 37.0 34.7 34.0 34.5 35.7 36.4 39.8 39.1 38.8 38.9 33.6 33.7 38.2 38.9 37.1.

38.1 35.1 36.0 34.2 36.0 32.0 32.2 32.5 32.6 32.2 35.7 39.0 34.9 35.4 37.5 34.6 34.1 34.7 36.0 36.7 40.0 39.0 38.4 38.9 33.6 34.0 38.1 38.9 37.4 38.0 35.1 36.2 34.4 35.9 32.0 32.2 32.4 32.6 32.2 36.1 39.4 35.3 35.5 38.1 35.1 34.3 35.1 36.3 37.0 40.2 39.2 38.4 39.2 34.1 34.5 37.9 38.9 37.8 38.5 35.4 36.5 34.7 35.8 32.1 32.1 32.2 32.2 32.4 32.4 32.6 32.7 32.2 32.6 36.9 38.3 39.6 39.9 35.8 37.3 35.8 36.4 38.4 38.5 35.3 35.6 34.5 36.9 36.0 36.8 36.7 37.6 37.7 38.4 40.2 40.4 39.3 39.4 38.5 38.8 39.3 39.5 35.3. 36.0

.35.2 36.0 37.8 37.8 38.9 38.9 38.2 38.6 39.1 39.8 36.0 36.8 37.0 37.7 35.7 37.5 35.8 35.8 32.1 32.2 32.7 32.7 34.2 37.9 40.5 39.3 37.0 39.1 36.8 38.1 38.1 38.4 39.2 40.4 39.7 39.2 39.9 36.3 37.0 38.1 38.8 39.0 40.2 37.9 38.5 38.3 36.3 32.2 32.3 32.5 32.7 35.5 36.3 39.4 37.4 38.1 40.0 37.4 39.1 39.2 39.0 39.9 40.6 40.0 39.9 40.2 36.4 38.1 38.2 38.7 39.5 40.5 38.9 39.4 38.0 36.8 32.3 32.3 32.4 32.6 32.7 32.9 32.8 32.8 35.1 34.9 35.3 35.1 37.9 37.1 36.4 36.3 39.0 39.8 40.3 40.8 38.5 39.7 39.7 40.0 39.5 40.0 39.7 40.4 40.5 40.9 40.8 41.1 40.4 40.9 40.6 41.2 40.7 41.3 36.7 37.1 39.0 39.8 38.2 38.2 38.8 38.8 40.0 40.4 40.4 40.4 39.5 39.9 39.8 40.0 37.6 37.3 37.4 38.1 32.4 32.8 33.1 32.8 34.8 35.3 36.9 35.8 40.3 41.2 40.1 40.0 40.3 40.8 41.2 41.1 41.4 41.5 41.9 37.8 40.7 38.2 38.0 40.8 40.5 40.1 40.0 37.5 38.8 32.7 32.9 33.1 32.8 34.7 35.4 36.6 35.8 40.7 41.5 40.5 40.1 40.5 40.8 41.4 41.2 41.6 41.5 42.0 38.3 41.1 38.3 37.3 41.1 40.4 40.0 39.9 37.7 39.6 32.6 32.8 33.1 32.8 34.6 35.2 37.7 35.8 41.2 41.7 40.5 40.1 40.5 40.8 41.4 41.2 41.8 41.4 41.4

.38.6 41.4 38.4 36.9 41.5 39.8 39.8 39.4 37.9 40.3 32.6 32.8 33.0 32.7 34.6 35.0 35.7 35.6 41.3 41.8 40.4 40.2 40.4 40.6 41.2 41.1 41.7 41.1 39.5 38.7 41.6 38.4 36.7 41.6 39.3 39.6 39.1 37.8 41.0 32.6 32.4 32.7 32.8 32.9 32.8 32.6 32.6 35.5 37.6 34.9 35.1 35.8 35.9 36.0 38.1 41.5 41.7 42.0 41.9 40.2 40.0 40.0 39.5 40.1 39.8 40.4 40.2 40.8 40.5 41.0 40.6 41.4 41.1 40.7 40.3 37.9 36.5 37.5 36.1 41.8 41.8 38.5 38.5 36.4 36.2 41.5 41.3 39.2 39.1 39.3 39.3 38.6 38.0 37.4 37.1 39.4 37.4 32.4 32.6 32.8 32.5 36.5 35.4 35.0 37.2 39.5 39.0 39.3 38.0 39.7 40.0 40.2 40.7 41.0 40.3 35.3 34.7 41.7 38.4 37.1 41.4 39.0 39.7 37.3 37.3 35.9 32.3 32.3 32.5 32.5 32.8 32.8 32.4 32.4 35.7 35.2 35.7 36.1 34.5 34.4 35.4 34.8 38.8 38.6 37.1 36.9 37.4 35.6 36.3 35.5 39.1 37.9 39.2 38.5 39.9 39.7 40.8 40.8 41.2 41.2 40.5 40.4 34.6 34.2 34.1 33.8 41.6. 41.1 38.1 38.0 37.8 37.9 41.7 40.8 38.5 37.3 39.8 38.8 36.0 35.2 38.1 38.3 35.0 34.6 32.3 32.5 32.8 32.3 34.9 36.5 34.2 34.6 38.0 36.6 34.9 35.1 37.0 37.9 39.5 40.7 40.8 40.2 34.0 33.7 40.4 38.0 37.8 40.2 36.1 37.7 34.8 38.1 34.3 32.3 32.5 32.8 32.3 34.6 36.9 34.2 34.5 37.6 36.6 34.5 35.0

.36.5 37.4 39.3 40.4 40.4 40.0 33.9 33.6 39.9 38.1 37.6 39.7 35.7 37.0 34.6 37.6 34.2 32.3 32.5 32.7 32.6 34.1 35.7 37.3 35.6 37.8 38.9 37.1 37.0 37.7 38.3 39.1 40.5 40.4 40.0 38.6 35.4 38.1 38.3 38.0 39.5 39.0 37.8 37.4 36.7 36.9 MONTHLY AVERAGE 37.1

TABLE 3.1-3 I.

AVERAGE HOURLY TEMPERATURE IN O VERMONTr YANKEE SAMPLE STATION No. 3 MARCH 1980 HOUR DAILY AVERAGE DAY 1

2 3

4*

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 34.0 33.9 33.8 39.;7 39.8 39.9 41.3 41.1 40.9 34.1 34.0 33.9 34.7 34.6 34.6

33.8 33.5 33.9 36.4 35.9 35.6 34.3 34.2 34.3 35.4 35.2 35.1 36.5 36.1 35.8 34.1 34.0 33.9 33.7 33.6 33.4 34.0 33.9 34.0 34.0 33.9 33.8 34.1 34.0 34.0 35.1 34.7 34.4 41.2 41.0 40.9 34.1 34.1 34.2 33.0 33.0 33.0 33.1 33.1 33.1 33.4 33.3 33.2 32.5 32.5. 32.5 33.2 33.2 33.2 34.2 34.2 34.3 35.0 35.1 35.1 34.5 34.4 34.3 35.1.35.1 35.0 35.6 35.7 35.7 36.8 36.8 36.7 37.2 37.3 37.3 36.8 36.7 36.7 33.8 33.7-40.0 40.0 40.8 40.7' 33.9 33.9 34.9 35.4 34.2 34.5 35.6 35.7 34.3 34.2 35.1 34.9 35.6 35.5 34.3 35.0 33.4. 33.7 34.1 34.1 33.9 34.8 33.9 33.8 34.4 34.7 40.9 40.9 34.7 35.0 33.0 33.0 33.1 33.1 33.2 33.2 32.5 32.5 33.2 33.3 34.3 34.4 35.0 34.9 34.2.34.2 35.0 34.9 35.7 35.8 36.8 36.8 37.4 37.4 36.6 36.6 33.9 40.0 40.7 34.1 35.9 34.9 36.0 34.1 34.8 35.5 36.0 34.3 34.r1 35.1 33.7 35.3 40.9 35.2 32.9 33.0 33.2

32. 5 33.3 34.4 34.8 34.1 34.8 35.9 36.7 37.4 36.5 34.3 40.1 40.7 34.5 36.4 35.5 36.5 34.1L 34.8 35.7 36.7 34.8 34.1 35.5 33.9 35.7 40.9 34.8 32.9 33.1 33.3 32.5 33.4 34.5 34.8 34.1 34.8 35.9 36.6 37.4 36.5 34.7 40.1 40.7 35.0 37.0 36.3 37.0 34.4 35.0 36.2 37.6 35.4

.34.1 35.8 34.2 35.9 41.0 34.3 33.0 33.2 33.3 32.5 33.4 34.5 34.8 34.1 34.8 35.9 36.6 37.3 36.5 35.2 40.0 41.0 36.0 38.1 37.1 37.6 34.8 35.4 37.2 36.6 35.9 34.1 35.8 34.8 36.2 41.2 34.0 33.0 33.4 33.3 32.5 33.4 34.4 34.9 34.0 34.7 36.0 36.5 37.3 36.5 35.7 40.0 41.3 36.9 38.9 38.1 38.2 35.9 35.9 38.3 35.1 36.2 34.1 35.7 36.5 36.7 41.5 33.8 33.0 33.6 33.3 32.5 33.5 34.5 35.1 34.1 34.8 36.1 36.5 37.3 36.6 36.5 40.4 41.7 38.0 39.7 38.9 38.9 38.3 36.6 39.3 34.6 36.5 34.3 35.7.

37.9 37.1 41.7 33.8 33.1 33.7 33.3 32.5 33.7 34.7 35.3 34.2 34.8 36.3 36.5 37.5 36.6 37.7 40.7 42.1

.39.0 39.9 39.6 39.4 38.6 37.3 40.1 34.3 36.9 34.6 36.0 37.6 37.7 42.0 33.8 33.3 33.8 33.3 32.6 33.8 34.9 35.5 34.4 35.0 36.6 36.6 37.6 36.7 38.9 39.3 41.1 41.5 42.4 42.4 39.4 39.7 38.0 36.4 40.8 41.1 40.3 41.0 38.1 37.7 38.0 38.6 40.7 40.9 34.2 34.6 37.1 37.5 35.2 35.6 36.3 36.4.

36.6 36.1 38.2 38.8 42.1 42.1 33.8 33.9 33.4 33.5 34.0 34.0 33.3 33.3 32.7 32.8 34.0-.34.0

.35.2 35.3 35.5 35.5 34.5 34.5 35.1 35.3 36.9 37.1 36.6 36.5 37.7 37.9 36.9 37.0 39.6 41.9 42.0 39.7 35.3 41.*1 41.6 37.3 39.2 4141 35.3 37.7 36.6 36.7 36.1 39.2 42.0 34.1 33.6 34.1 33.3 33.0 34.0 35.5 35.4 34.6 35.4 37.2 36.4 37.9 37.1 39.9 42.2 41.6 39.5 35.1 41.1 42.0 36-.7 40.0 41.1 36.3 38.0 37.4 37.0 36.0 39.8 41.7 34.1 33.6 34.2 33.2 33.1 34.2 35.5 35.2 34.7 35.7 37.3 36.2 37.9 37.1 39.8 42.4 41.2 39.5 35.2 40.9 47.3 36.1 40.6 40.7 37.5 38.6 38.0 37.3 35.7 40.2 41.0 33.9 33.5 34.2 33.2 33.1 34.3 35.4 35.0 34.6 35.6 37.3 36.1 37.8 37.2 39.4 42.4 40.6 39A4 35.6 40.5 42.3 35.9 41.0 39.9 38.2 38.9 38.3

-37.3 35.5 40.5 39.4 33.8 33.4 34.0 33.2 33.0 34.2 35.4 34.8 34.6 35.6 37.3 36.0 37.7 37.2 39.1 39.0 42.3 42.2 39.6 37.9 38.7 37.5 35.4 34.6 40.3 40.5 42.4 41.7 36.3 38.2 41.3 41.8 38.1 36.0 36.7 35.1 39.1 38.4 38.3 37.9 37.4 36.9 35.7 37.3 40.8 40.9 37.4 35.8 33.5 33.4 33.3 33.3 33.9 33.7 33.1 33.0 33.0 33.0 34.2 34.1 35.2 35.1 34.7 34.6 34.7 34.8 35.7 35.6 37.3 37.2 36.0 36.2 37.5 37.6 37.2 37.2 39.0 42.1 36.3 35.8 34.1 38.7' 38.8 39.0 39.9 34.9 34.3 36.5 36.6 35.6 37.0 41.0 34.9 33.2 33.2 33.6 32.9 33.0 33.9 34.9 34.5 34.9 35.6 37.1 36.5 37.5 37.2 39.2 41.9 35.3

-35.1 33.9 37.8 36.8 38.3 38.4 34.4 34,0 35.1 35.3 34.7 36.4 41.1 34.4 33.1 33.2 33.5 32.8 33.1 33.9 35.0 34.5 35.0 35.6 37.0 36.7 37.4 37.2 39.2 41.7 34.7 34.9 33.9 37.4 35.4 37.0 37.4 34.3 33.8 34.5 34.6 34.4 36.0 41.2 34.2 33.1 33.2 33.5 32.6 33.1 33.9 35.0 34.6 35.1 35.6 36.9 36.9 37.3 37.2 39.5 41.5 34.3 34.7 33.9 37.0 34.6 35.9 36.8 34.2 33.7 34.1 34.2 34.3 35.6 41.2 34.1 33.1 33.1 33.5 32.5 33.2 34.1 34.5 35.1 35.6 36.9 37.1 37.1 37.2 37.0 41.0 40.1i 36.6 35.9 37.8 38.4 36.2 37.4 37.4 35.2 36.0 35.3 35.6 35.5 38.0 39.7 34.0 33.2 33.6 33.2 32.8 33.7 34.8 35.0 34.5 35.2 36.5 36.5 37.5 36.9 MONTHLY AVERAGE 36.1

rz?.I F..,,

p.i m

TABLE 3.1i-4 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO.

3 APRIL 1980 DAILY AVERAGE

• J LAJ DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1

2 3

4 5

6.

7 a

9 10:

11 12

13.

14 15 16 17 18 19 20 21 22.

23 24 37.2 37.2 38.1 38.2 39.2 39.1 40.3 40.5 39.5 39.4 39.1 38.9 39.7 39.7 41.0 41.0 41.5 41.5 41.6 41.5 39.4 39.5 40.3 40.4 40.2 40.1 41.2 41.1 40.8 40.9 42.5 42.4 41.9 41.8 41.7 41.7 41.9 41.9 42.8 42.8 44.5 44.5 37.2 38.3 39.1 40.6 39.3 38.9 39.8 41.1 41.4 41.3 39.5 40.4 40.1 41.1 40.9 42.4 41.8 41.7 41.9 42.8 44.5 46.7 46.6 47.8 47.5 48.8 47.0 46.1 37.2 38.4 39.2 40.7 39.2 38.7 39.8 41.2 41.3 41.2 39.5 40.5 40.1 41.0 40.8 42.3 41.7 41.8 42.0 42.7 44.5 46.8 46.5 47.9 47.4 48.8 48.7 46.8 46.0 37.1 38.4 39.2 40.8 39.2 38.7 39.8 41.2 41.3' 41.3 39.4 40.5 40.1 41.0 40.8 42.3 41.5 41.9 42.0 42.8 44.5 46.7 46.4 47.9 47.4 48.7 48.6 46.7 46.0 37.0 38.4 39.1 40.9 39.2 38.6 39.9 41.3 41.2 41.3 39.4 40.5 40.1 41.0 40.7 42.2 41.3 41.9 42.0 42.9 44.4 46.7 46.4 47.8 47.4 48.8 48.7 46.7 46.0 36.9 38.3 39.1 40.9 39.1 38.5 39.9 41.3 41.0 41.3 39.5 40.5 40.0 41.0 40.7 42.1 41.2 41.9 42.1 43.0 44.4 46.8

• 46.4 47.7 47.4 48.8 48.7 46.6 46.1 36.9 36.9 38.3 38.4 39.1 39.1 40.9 40.9 39.1 39.0 38.4 38.4 39.9 39.9 41.4 41.8 41.0 40.9 41.1 40.6 39..5 39.5 40.5 40.4 40.0 40.1 41.0 41.0 40.7 40.7 42.1 42.0 41.0 41.0 41.9 41.8 42.1 42.2 43.1 43.3 44.4 44.4 46.7 46.3 46.5 46.6 47.5 47.4 47.3 47.3 48.8 48.7 48.7 48.7 46.5 46.6 46.0 46.0 37.0 37.42 37.4 38.4.38.5 38.6 39.1 39.2 39.4 40.8 40.8 40.9 39.0 39.0 39.1 38.4 38.5 38.7 40.1 40.2 40.5 41.5 41.6 41.6 40.9 41.0 41.0 40.5 40.3 40.4 39.5 39.6 39.7 40.4 40.4 40.5 40.2 40.4 40.6 41.2 41.1 41.0 40.8 40.9 41.2 42.0 42.1 42.3 41.0 41.2 41.2 41.8 41.8 41.8 42.3 42.5 42.6 43.6 43.8 44.2 44.6 44.9 45.2 SYST*M 46.0 46.0 46.0 46.7 46.9 47.0 47.3 47.2 47.2 47.4 47.5 47.7 48.8 48.9 49.0 48.7 48.7 48.7 46.6 46.7 46.7 46.1 46.1 46.2 37.6 37.7 3

38.7 38.9 3 39.6 39.9 4 40.8 40.8 4 39.1 39.1 3

38.9 39.0 3 40.8 41.1 4

41.6 41.6 4 41.1 41.3 4 40.4 40.5 4 39.8 39.9 4 40.3 40.2 4 40.8 40.9 4 41.0 40.9 4 41.5 41.8 4 42.3 42.4 41.4 41.5 4 41.7 41.6 42.7 42.8 4 44.4 44.7 45.5 45.9 IlNOPERATIVE 46.1 46.3 47.3 47.6 47.2 47.3 47.9 48.2 49.1 49.2 48.7 48.7 46.7 46.7 46.3 46.5 7.9 9.0 0.1.

O.8 9.3 9.2 1.2

.1.7 1.4 0.5

• 0.0 0.2 1.1 0.9

• 1.9 a2.4 1.7 i1.6 2.9 A4.8 46.1 i6.6 47.9 47.3 48.4 49.2 48.7 "6.7 46.7 38.0 39.0 40.4 41.Z 39.4 39.3 41.2 41.7 41.5 40.4 40.0 40.4 41.3 41.0 42.0 42.6 41.8 41.7 43.0 44.8 46.3 46.9 48.1 47.5 48.6 49.3 48.6 46.7 46.9 38.1 39.2 40.5 40.7 39.6 39.4 41.3 41.7 41.6 40.3 40.0 40.4 41.3 40.9 42.3 42.6 41.9 41.8 43.0 44.8 46.4 47.1 48.3 47.6 48.6 49,4 48.5 46.6 47.0 38.1 39.3 40.5 40.7 39.7 39.5 41.3 41.8 41.7 40.2 40.0 40.4 41.7 40.9 42.5 42.5 41.9 41.8 43.0 44.7

.46.3 47.3 48.3 47.6 48.7 49.4 48.4 46.6 47.1 38.0 39.4 40.5 40.5 39.7 39.6.

41.2 42.1 41.7 40.0 40.1 40.4 41.4 40.9 42.6 42.4 41.9 41.8 42.9 44.6 46.2 47.3 48.3 47.7 48.6 49.4 48.3 46.6 47.2.

37.9 39.4 40.4 40.4 39.7 39.6 41.2 41.8 41.8 39.9 40.1 40.4 41.4 40.9 42.5 42.3 41.9 41.8 43.0 44.6 45.9 37.9 39.3 40.4 40.1 39M6 39.5 41.1 41.7 41.7 39.7.

40.2 40.4 41.3 40.9 42.5 42.2 41.9 41.8 42.9 44.4 45.7 37.9 39.3 40.4 39.8 39.5 39.5 41.1 41.8 41.7 39.5 40.2 40.4 41.3 40.9 42.5 42.2 41.9 41.9 42.9 44.5 45.6 47,1 47.9 47.6 48.6 49.1 47.9 46.3 47.0 37.9 39.2 40.4 39.6 39.4 39.6 41.0 41.7 41.7 39.4 40.3 40.3 41.2 41.0 42.5 42.1 41.8 41.9 42.9 44.4 45.6 47.0 47.8 47.5 48.6 49.0 47.7 66.3 47.0 38.0 39.2 40.4 39M5 39.2 39.6 41.0 41.6 41.7 39.3 40.3 40.3 41.2 40.8 42.5 42.1 41.8 41.8 42.8 44.4 45.7 46.9 47.8 47.5 48.6 49.0 47.5 46.2 47.0 37.5 38.8 39.7 40.6 39.3 39.0 4045 41.5 41.4 40.5 39.8 40.4 40.7 41.0 41.5 42.3 41.6 41.8 42.5 43.9 45.2 46.7 47.3 47.6 48.0 49.0 48.5 46.6 46.5 HOUR 46.6 46.8 47.7 47.5 48.7 48.9 47.3 46.1 46.7 46.7 47.7 47.5 48.7 48.8 47.1 46.1 47.4.47.2 48.1 48.0 47.7. 47.7 48.6 48.6 49.4 49.2 48.1 48.0 46.5 46.4 47.1 47.0 MONTHLY AVERAGE 42.7

TABLE 3.1-5 AVERAGE HOURLY TEKPEIATORE IN 6F VERMONT YANKEE SAMPLE STATION N0. 3 MAY 1980 DAY HOUR

1.

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 I

to 1

2 3

4 5

6 7

a 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 47.0 47.7 49.5 51.3 52.5 54.1 56.1 56.4 55.1 53.5 53.0 52.4 53.8 54.1 54.4 53.8 54.4 56.1 55.9 56.6 57.7 58.3 59.0 61.3 63.3 64.8 64.8 64.8 65.4 65.8 65.9 47.0 47.7 49.6 51.4 52.5 54.1 56.3 56.2 55.1

.53.4 52.9 52.3 53.8 54.0 54.4 53.7 54.4 56.3 56.1 56.4 57.6 58.3 59.0 61.3 63.4 64.8 64.6 64.8 65.2 65.4 65.7 47.0 47.7 49.6 51.4 52.4 54.2 56.2 56.0 55.1 53.4 52.8 52.3 53.8 53.9 54.4 53.6 54.3 56.4 56.3 56.3 57.6 58.2 58.9 61.2 63.4 64.6 64.4 64.7 65.1 65.5 65.5 47.0 47.7 49.6 51.4 52.5 54.3 56.1 55.9 55.1 53.3 52.6 52.2.

53.8 53.9 54.4 53.6 54.3 56.3 56.3 56.2 57.7 58.6 58.9 61.2 63.4.

64.6 64.5 64.3 65.0 65.6 65.5 47.0 47.7 49.6 51.5 52.5 54.2 55.8 55.7 55.1 53.2 52.5 52.2 53.9 53.8 54.3 53.5 54.3 56.3 56.3 56.2 57.7 58.7 58.8 61.2 63.5 64.7 64.6 64.3 65.0 65.7 65.6 47.0 47.7 49.5 51.5 52.6 54.3 55.7 55.4 54.9 53.2 52.5 52.1 53.9 53.8

.54.3 53.4 54.2 56.3 56.3 56.2 57.8 58.8 58.8 61.1 63.5 64.7 64.5 64.4 64.9 65.7 65.6 47.0 47.0 47.7 47.6 49.3 49.3 51.6 51.6 52.6 52.8 54.5 54.6 55.5 55.6 55.2 55.0 54.9 54.5 53.2 53.2 52.4 52.4 52.1 52.1 54.0 54.0 53.7 53.7 54.2 54.3.

53.4 53.3 54.2 54.1 56.3 56.4 56.4 56.3 56.2 56.2 57.8 57.8 58.3 -58.0 58.8 58'.8 61.0 60.9 63.7 63.9 64.6 64.4 64.3 63.7 64.3 64.1 64.8 64.7 65.9 65.5 47.1 47.2 47.6 47.8 49.3 49.4 51.6 51.7 53.2 53.3 54.7 55.4 55.8 55.9 55.0 55.0 54.4 54.4 53.2 53.3 52.4 52.4 52.0 52.2 54.0 54.0 53.7 53.8 54.3 54.4 53.4 53.4 54.1 54.2 56.5 56.5 56.0 56.1 56.3 56.4 57.9 57.9 57.8 57.8 58.8 59.0 60.8 60.8 64.2 64.0 64.4 64.7 63.5 63.5 64.0 63.9 64.6 64.5 65.0 64.9 47.3 48.0 49.7 51.9 53.8 55.9 56.0 55.1 54.4 53.4 52.6 52.3 54.0 53.8 54.6 53.6 54.4 56.4 56.2 56.6 57.9 57.8 59.2 60.9 63.8 65.0 63.6 63.8 64.2 64.9 4 7.4 48.3 50.0 52.0 54.4 56.3 55.9 55.2 54.3 53.6 52.8 52.6 54.1 53.9 54.7 53.8 54.7 56.2 56.3 56.8 57.9 57.9 59.6 61.1 63.9 64.8 63.7 64.0 64.2 64.8 47.5 47.6 48.6 48.8 50.4 50.8 52.1 52.4 55.3 55.5 56.6 56.7 55.9 55.9 55.3 55.3 54.2 54.2 53.8 54.1 52.9 53.0 52.8 53.2 54.1 54.2 54.0 54.1 54.7 54.6 54.1 54.4 55.0 55.3 56.3 56.3 56.3 56.3 57.1 57.4 57.9 57.9 58.2 58.4 60.0 60.3 61.3 61.6 64.2 65.2 64.9 65.5 63.9 64.2 64.2 64.5 64.4 64.7 64.9 65.1 47.7 49.2 51.1 52.7 56.0 57.0 56.1 55.3 54.2 54.2 53.0 53.4 54.2 54.3 54.6 54.6 55.7 56.4 56.4 57.7 57.8 58.7 60.7 61.8 65.7 65.8 64.5 64.7 64.9 65.2 47.8 47.9 49.4 49.6 51.5 51.6 52.6 52.6 56.2 55.9 56.8 56.5 56.3 56.4 55.3 55.3 54.2 54.2 54.3 54.3 52.9 52.9 53.5 53.8 54.2 54.2 54.4 54.4 54.6 54.6 54.8 55.0 55.9 56.2 56.4 56.4 56.6 56.8 57.9 58.1 57.8 57.8 58.9 59.1 61.1 61.4 62.1 62.3 66.0 66.1 65.8 65.9 64.9 65.6 65.0 65.2 65.2 65.5 65.3 65.2 47.9 49.8 51.7 52'.7 55.2 56.1 56.6 55.3 54.2 54.2 52.8 53.9 54.3 54.4 54.5 55.1 56.4 56.4 57.0 58.3

.57.8 59.3 61.5 62.5 66.1 65.9 65.7 65.6 65.9 65.1 47.8 47.7 49.8 49.9 51.7 51.9 52.7 52.6 54.8 54.6 55.8 55.7 56.8 56.9 55.2 55.1 54.2 54.0 54.1 54.0 52.8 52.8 53.9 53.8 54.4 54.5 54.5 54.5 54.4 54.3 55.1 54.9 56.4 56.3 56.4 56.4 57.2 57.3 58.4 58.4 57.9 57.9 59.4 59.4 61.6 61.7 62.7 62.7 66.0 65.4 65.9 65.8 65.5 65.2 65.7 65.6 66.3 66.4 65.2 65.8 47.6 49.8 51.9 52.6 54.1 55.7 56.9 55.0 53.9 53.8 52.7 53.8 54.6 54.6 54.2 54.8 56.1 56.3 57.2 58.2 58.0 59.3 61.7 62.7 64.9 65.3 65.0 65.4 66.3 66.0 47.6 49.5 51.6 52.6 54.0 55.6 56.9 55.0 53.8 53.5 52.6 53.9 54.5 54.6 54.1 54.7 56.0 56.3 57.1 58.1 58.0 59.2 61.6 62.8 64.6 64.5 64.9 65.2 65.8 66.0 66.5 47.7 49.5 51.6 52.6 54.0 55.7 56.8 55.0 53.7 53.3 52.5 53.9 54.4 54.6 54.0 54.5 56.0 56.2 57.0 58.0 58.1 59.1 61.6 62.9 64.3 64.5 64.7 65.2 65.6 66.1 66.5 47.7 49.5 51.5 52.6 54.0 55.9 56.7 55.0 53.6 53.2 52.4 53.8 54.3 54.5 53.9 54.6 56.1 56.0 56.9 57.8 58.2 59.1 61.5 63.2 64.5 64.8 64.6 65.4 65.9 66.1 66.5 DAILY AVERAGE 47.4 48.6 50.5 52.1 53.9 55.4 56.2 55.3 54.4 53.6 52.7 52.9 54.1 54.1 54.4 54.1 55.1 56.3 56.5 57.2 57.8 58.6 60.1 61.7 64.5 65.0 64.5 64.7 65.2 65.4 66.1 57.1 65.6 66.0 66.1 65.9 65.6 65.4 65.5 66.0 66.4 66.8 67.0 67.1 67.0 67.0 66.7 MOSTILY AVERAGE

f~1 TABLE 3.1-6 AVERAGE HOURLY TEMPERATURE IN "F VERMONT YANKEE SAMPLE STATIOM Wd. 3 JUNE 1980 DAILY AVERAGE DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12

13.

14 15 16 17 18 L9 20 21 22 23 24 I.3 U'

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22

,.3 24 25 26 27 28 29 30 66.5 68.5 66.5 66.2 66.2 65.9 64.9 65.6 63.6 63.1 62.2 61.5 64.9 63.3 63.9 66.4 64.3 66.0 66.9 67.3 67.3 67.8 69.8 69.8 71.5 71.7 72.5 74.4 73.7 72.2' 66.4 68.2 66.7 65.7 66.1 65.9 65.5 65.5 63.5 63.2 63.4 62.5 65.1 63.1 63.7 66.7 64.5 65.9 66.8 67.2 67.2 67.8 69.9 69.6 71.4 71.6 72.3 74.4 73.7 72.1 66.3 68.0 66.8 65.7 66.0 65.8 66.3 65.5 64.1 64.0 64.2 63.1 65.1 63.1 63.4 67.0 65.6 65.9 66.8 67.1 67.2 67.7 69.9 69.5 71.3 71.5 72.2 74.2.

73.7 72.1 66.3 68.3 66.8 65.7 65.9 65.6 66.3 65.6 64.3 64.5 64.3 63.2 65.1 63.2 63.3 67.1 66.1 66.0 66.8 67.1 67.2 67.8 69.9 69.5 71.2 71.5 72.1 74.1 73.7 72.0 66.3 68.5 66.9 65.8 65.8 65.5 66.1 65.6 64.7 64.6 64.3 63.3 65.1 63.1 63.4 67.3 66.2 65.9 66.9 67.2 67.2 68.0 69.8 69.6 71.1 71.5

-72.0 73.9.

73.9 71.9 66.4 68.4 67.0 65.8 65.7 65.3 66.2 65.7 65.0 64.7 64.3 63.3 65.1 63.1 63.4 67.8 66.3 65.9 67.0 67.3 67.2 68.1 69.8 69.7 71.0 71.4 71.9 73.8 74.0 71.9 66.7 66.8 68.5 68.3 67.4 66.9 65.8 65.9 65.6 65.5 65.2 65.2 66.4 66.5 65.8 65.8 65.1 64.7 64.9 65.0 64.4 62.9 61.7 61.0 65.2 65.2 63.2 63.2 63.6 64.0 66.9 66.3 66.5 66.6 66.0 65.9 67.1 67.4 67.5 67.6 67.3 67.5 68.3 68.8 70.0 70.2 70.0 70.3 71.0 71.1 71.4 71.5 71.9 72.0 73.7 73.7 74.0 74.1 71.8 71.7 66.8 67.8 66.0 66.0 65.5 65.1 66.6 65.6 63.2 63.6 61.7 61.1 63.2 63.4 64.5 66.1 64.7 65.4 66.6 66.9 67.6 69.3 69.2 70.4 71.3 71.6 72.2 73.7 74.2 71.7 67.1 67.3 65.8 66.1 65.5 65.0 65.3 64.8 62.7 63.0 61.4 61.2 62.2 63.4 65.3 66.1 64.1 65.2 66.4 66.6 67.7 69.8 68.5 70.3 72.0 71.8 72.0 74.1 74.3 71.6 67.2 67.1 65.8 66.3 65.6 65.0 64.6 64.7 62.7 63.0 61.4 61.4 62.2 63.2 65.9 65.8 64.2 65.4 66.7 66.6 67.2 70.4 68.6 70.4 71.6 71.3 72.2.

74.5 74.1 71.6 67.4 67.0 65.9 66.6 65.7 65.1 64.6 64.6 62.7 62.9 61.4 61.6 62.3 63.5 65.8 65.3 64.4 65.7 66.9 66.7 66.9 70.9 69.0 70.5 71.5 71.1 72.7 74.8 74.1 71.6 68.0 66.8 66.0 66.9 65.8 65.3 64.7 64.5 62.9 63.0 61.5 61.8 62.4 64.0 66.3 65.1 64.6 65.9 67.3 66.6 67.1 71.2 69.4 70.5 71.9 71.5 73.0 75.0 74.1 71.7 68.6 66.6 66..0 67.1 66.0 65.4 64.7 64.4 63.0 63.0 61.6 62.' 1 62.6 64.9 66.5 64.9 64.9 66.0 67.5 66.6 67.8 71.3 69.7 70.6 72.0 71.8 73.3 75.2 74.1 71.6 68.9 69.1 66.5 66.4 66.0 66.1 67.1 67.1 66.1 66.3 65.5 65.6 64.6 64.7 64.7 64.7 63.1 63.3 63.0 63.0 61.6 61.7 62.3 62.6 62.6 62.6 65.4 65.5 66.6 66.4 64.8 64.8 65.2 65.4 66.1 66.0 67.8 68.0 66.6 66.9 68.3 68.5 71.6' 71.7 69.5 70.1 70.6 71.0 71.9 71.6 72.2 72.6 73.9 74.4 75.3 75.4 74.3 74.1 71.7 71.8 69.3 66.4.

66.1 67.0 66.5 65.6 64.9 64.8 63.4 63.1 61.8 62.7 62.6 65.4 66.5 65.0 65.7 65.8 68.7 67.4 68.4 72.0 71.3 71.8 71.5 72.8 74.7 75.5 74.0 71.8 69.2 66.3 65.9 67.0 66.5 65.6 65.4 64.9 63.5 62.9 61.9 62.9 62.6 65.3 66.2 65.1 65.9 65.8 69.1 67.4 68.5 71.4 71.2 72.3 71.8 72.9 74.9 75.1 73.7 71.9 69.0 66.2 65.8 66.8 66.5 65.5 65.8 64.9 63.6 62.8 62.0 63.5 63.1 65.2 65.8 65.2 65.9 65.9 69.0 67.3 68.4 71.0 70.2 72.5 72.3 72.8 75.1 74.7 73.6 72.1 68.8 66.0 65.8 66.6 66.4 65.4 65.7 64.8 63.5 62.7 62.1 63.7 64.0 64.9 65.4 65.0 66.2 66.0 68.8 67.3 68.3 70.7 69.9 72.4 72.4 72.7 75.0 74.3 73.4 72.7 68.6 65.9 65.9 66.5 66.3 65.2 65.2 64.4 63.4 62.5 61.8 63.7 64.2 64.7 65.5 64.8 65.7 66.0 68.1 67.3 68.2 69.9 70.1 72.2 72.2 72.6 74.8 74.0 72.9 73.1 68.5 65.8 65.7 66.4 66.2 65.1 64.9 64.2 63.2

.62.4 61.7 63.8 64.0 64.5 65.5 64.7 65.3 66.1 67.4 67.2 68.1 69.0 70.1 72.1 72.0 72.7 74.7 73.8 72.4 72.7 68.6 65.8 65.9 66.3 66.1 65.0 65.0 64.0 63.2 62.3 61.6 64.0 63.7 64.3 65.6 64.6 65.4 66.3 67.2 67.1 68.0 69.1 70.1 71.9 71.9 72.7 74.6 73.7 72.3 72.6 68.7 65.9 66.7 66.3 66.0 64.9 65.6 63.8 63.1 62.2 61.4 64.3 63.5 64.1 65.9 64.5 66.0 66.9 67.3 67.2 67.9 69.7 69.9 71.7 71.8 72.6 74.6 73.7 72.2 72.5 67.7 67.1 66.3 66.4 66.0 65.4-65.4 65.0 63.6 63.3 62.4 62.6 63.7 64.0 65.1 65.7 65.4 65.9 67.4 67.1 67.7 69.7 69.8 70.8 71.6 72.0 73.3 74.4 73.7 72;0 MON1THLY AVERAGE 67.4

TABLE 3.1-7 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 3 JULY 1980 HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DAY I

i 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 72.5

• 72.6 71.8 71.9 75.0 74.4 73.8 74.3 73.4 74.5 73.9 74.7 75.4 76.0 76.0 76.4 78.1 78.1 78.8 77.2 77.6 79.8 79.0 79.6 79.5 80.2 79.7

ý9.6 79.9 79.3 79.4 72.6 72.5 71.7 71.7 74.9 74.3 73.5 74.4 73.5 74.4 73.7 74.6 75.2 75.9 75.9 76.3 78.2 78.2 78.7 77.2 77.7 79.7 79.0 79.6 79.4 80.1 79.6 79.6 79.8 79.4 79.2 72.4 72.4 72.5 72.4 71.7 71.6 71.6 71.5 74.8 74.8 74.2 74.3 73.5 73.5 74.4 74.7 73.6 73.6 74.4 74.3 73.6 73.6 74.4 74.4 75.2 75.0 75.8 75.8 75.7 75.6 76.2 76.1 78.2 78.3 78.3 78.4 78.6 78i5 77.1 77.1 77.7 77.8 79.6 79.5 79.0 79.2 79.6 79.6 79.3 79.3 80.0 79.9 79.5" 79.4 79.5 79.5 79.8 79.9 79.3 79.3 79.1 79.0 72.4 72.5 72.0 71.6 74.7 74.2 73.5 74.6 73.6 74.3 73.6 74.2 75.0 75.8 75.7 76.1 78.3 78.4 78.5 77.0 77.8 79.3 79.2 79.6 79.2 79.9 79.3 79.6 79.9 79.2 79.0 72.5 72.3 71.6 71.7 74.5 74.2 73.6.

74.7 73.7 74.2 73.5 74.2 75.0 75.8

.75.7 76.1 77.9 78.4 78.4 77.0 77.9 79.2 79.3 79.5 79.2 79.8 79.4 79.6 79.9 79.1 78.9 72.7 72.3 71.6 71.7 74.4 74.0 73.5 74.7 73.7 74.2 73.6 74.1 75.0 75.8 75.7 76.0 78.4 78.4 78.4 77.1 78.0 79.2 79.5 79.5 79.2 79.8 79.4 79.8 79.9 79.1 78.9 72.7 72.8 72.2 71.8 71.6 71.6 71.9 72.2 74.4 74.5 73.9 74.0 73.6 73.7 74.8 74.9 73.9 74.0 74.2 74.0 73.6 73.6 74.2 74.4 75.2 75.4 75.7 75.9 75.8 76.0 76.1 75.8 78.5 78.8 78.3 78.3 78.4 78.6 77.2 77.2 78.1 78.1 79.3 79.4 79.5 79.6 79.5 79.4 79.1 78.9 79.8 79.8 79.5 79.6 79.8 79.5 79.9 79.9 79.1 78.8 78.9 78.8 73.1 71.4 71.5 72.5 74.4 74.1 73.3 74.7 73.9 74.0 73.5 75.0 75.8 75.6 76.4 75.6 78.1 78.6 78.8 77.5 78.5 79.4 79.6 79.4 78.9 80.0 79.8 79.2 79.4 78.5 78.7 72.'8 71.3 71.4 72.8 74.1 74.4 72.8 74.3 73.8 74.2 73.6 75.2 76.0 75.5 76.0 75.8 77.8 78.4 79.1 77.8 78.9 79.4 79.1 79.3 78.9 80.1 80.2 79.2 79.0 78.4 78.7 72.1 71.1 71.6 72.8 74.6 74.7 72.9 74.1 73.6 74.2 73.9 75.4 76.4 75.5 75.4 76.2 77.9 78.2 78.6 78.0 78.9 78.8 78.9 79.1 79.1 79.9 80.5 79.3 79.0 78.5 78.7 72.3 72.6 71.2 71.4 71.9 72.2 73.0 73.4 75.0 74.9 74.8 75.2 73.1 "73.3 74.1 73'.9 73.6 73.7 74.3 74.5 74.3 74.4 75.5 75.9 76.7 77.0 75.5 75.6 75.4 75.8 76.5 76.6 78.1 78.1 78.5 78.6 78.0 78.1 78.0 78.3 79.0 78.9 78.8 78.9 78.9 79.0 79.0 79.0 79.4 79.8 79.8 79.8 80.8 80.9 79.4 79.6 78.9 78.9 78.6 78.9 78.8 78.9 72.9 71.4 72.5 74.1 74.8 75.5 73.6 73.5 74.0 74.5 74.4 76.0 77.2 75.7 75.8 76.4 78.1 78.7 78.4 78.5 78.5 79.0 79.1 79.2 80.0 79.6 81.2 79.7 78.8 79.0 79.0 73.1 73.3 71.4 71.4 72.6 72.6 74.9 75.3 75.3 75.4 75.4 75.5 74.1 75.0 73.4 73.2 74.2 74.5 74.7 74.6 74.5 74.6 75.8 75.6 77.2 76.9 75.9 76.1 75.8 76.0 76.6 77.1 78.1 78.6 78.7 78.9 78.8 78.9 78.4 78.2 78.4 78.6 79.1 79.1 79.2 79.2 79.3 79.5 80.2 80.4 79.6 79.5 81.3 80.8 79.9 79.9 78.8 78.8 79.2 79.4 79.1 79.3 73.4 71.4 72.6 75.2 74.6 75.4 75.3 73.3 74.7 74.3 74.8 75.9 76.3 76.0 76.1 77.7 79.1 79.1 78.8 78.0 79.0 79.0 79.4 79.5 80.6 79.5 80.1 79.9 78.8 79.6 79.5 73.4 73.0 71.4 71.6 72.8 72.8 75.0 74.6 73.6 74.3 75.1 74.7 75.2 74.8 73.6 74.0 74.9 74.8 74.4 74.6 75.0 75.1 76.1 76.1 76.1 76.2 75.7 75.5 76.1 76.2 78.2 78.3 79.0 78.9 79.2 79.1 78.6 78.3 77.8 77.7 79.6 79.8 79.1 79.3 79.9 80.0 79.6 79.7 80.7 80.7 79.7 79.8 79.9 79.7 79.8 79.8 78.8 79.0 79.6 79.7 79.6 79.9 72.6 72.0 72.6 73.8 74.1 74.1 74.6 73.9 74.7 74.5 75.2 76.0 76.1 75.3 76.5 78.1 78.7 79.0 77.9 77.7 79.8 79.3 79.8 79.8 80.7 79.8 79.1 79.9 79.2 79.7 79.8 72.2 71.9 72.4 73.6 73.9 73.5 74.2 73.6 74.8 74.5 75.1 75.8 76.2 75.4 76.9 78.0 78.5 78.9 77.6 77.6 79.9 79.2 79.7 79.8 80.6 79.8 79.1 80.2 79.1 79.7 79.6 72.2 71.9 72.2 74.4 73.9 73.5 74.3 73.6 74.7 74.4 75.0 75.7 76.2 75.8 76.9 78.1 78.3 78.8 77.4 77.6 80.1 79.1 79.6 79.6 80.5 79.8 79.4 80.0 79.2 79.6 79.5 72.6 71.8 71.9 75.0 74.0 73.6 74.4 73.5 74.6 74.2 74.9 75.6 76.1 76.1 76.7 78.1 78.2 78.8 77.3 77.7 80.0 79.0 79.7 79.6 80.3 79.7 79.5 79.9 79.3 79.5 79.4 DAILY AVERAGE 72.7 71.8 72.0 73.2 74.5 74.5 73.9 74.1 74.1 74.4 74.2 75.2 76.0 75.7 76.0 76.8 78.3 78.6 78.4 77.6 7817 79.2 79.4 79.5" 79.7 79M8 79.9 79.7.

79.3 79.2 79.2 76.6 MONTHLY AVERAGE

.-v.--*

~

off-"

M.

rllf,71 m

i~.

~

TABLE 3.1-8 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO.

3 AUGUST 1980 HOUR DAILY AVERAGE

-4 DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1

• 2 3

4 79.3 79.3 79.2 79.2 79.2 79.2 78.3 78.3 78.2 78.2 78.2 78.1 78.3 78.4 78.3 78.3 78.3 78.3 79.3 79.4 79.6 79.3 79.0 78.7 78.6 78.6 78.4 78.4 78.2 78.2 78.4 78.5 78.1 78.1 78.2 78.1 78.0 78.0 78.1 78.3 78.4 78.5 78.6 78.7 78.8 78.8 78.3 78.4 78.5 78.3 78.0 78.1 78.0 78.2 78.6 78.9 79.2 79.2 79.2 SYSTEM INOPERATIVE SYSTEM INOPERATIVE SYSTEH INOPERATIVE SYSTEM INOPERATIVE SYSTEM INOPERATIVE 80.4 78.5 78.5 78.4 78.3 78.7 78.5 78.4 78.3 80.2 79.7 79.3 77.5 77.5 76.8 76.4 76.0 73.7 73,3 72.9 72.2 71.7 72.9 74.5 73.8 73.1 72.8

.72.2 72.1 72.3 80.1 79.7 79.2 77.5 77.4 76.7 76.4 76.0 73.7 73.2 72.9 72.2 71.6 72.9 74.4 73.7 73.2 72.8 72.2 72.1 72.3 80.1 79.5 79.1 77.5 77.4 76.7 76.3 75.8 73.7 73.2 72.8 72.2 71.6 72.9 74.3 73.6 73.2 72.8 72.2 72.i 72.4 80.0 79.5 79.0 77.4 77.4 76.6 76.1 75.7 73.6 73.2 72.7 72.2 71.6 72.8 74.1 73.5 73.1.

72.7 72.1 72.0 72.4 79.8 79.5 79.0 77.4 77.4 76.4 76.1 75.6 73.6 73.3 72.7 72.1 71.5 72.8 74.0 73.5 73.0 72.7 72.1 72.0 72.4 79.6 79.6 78.9 77.4 77.4 76.4 76.1 75.6 73.6 73.3 72.6 72.1 71.4 72.8 73.9 73.4 72.9 72.7 72.1 72.0 72.5 79.6 79.6 78.8 77.3 77.3 76.3 76.0 75.4 73.6 73.2 72.6 72.1 71.4 72.7 73.8 73.4 72.8 72.7 72.1 72.0 72.5 79.5 79.4 79.5 79.5 78.8 78.7 77.0 77.0 77.3 77.1 76.3 76.4 75.9 75.9 75.4 75.3 73.6 73.4 73.2 73.3 72.5 72.5 72.0 72.0 71.4 71.4 72.7 72.7 73.7 73.6 73.3 73.3 72.8 72.7 72.7 72.6 72.1 72.1 72.0 72.0 72.6 72.7 79.7 79.5 78.6 76.9 77.2 76.5 75.9 75.3 73.4 73.3 72.4 72.0 71.5 72.8 73.7 73.2 72.7 72.6 72.0 72.1 72.7 79.8 79.9 79.6 79.7 78.5 78.2 76.9 76.9 77.3 77.3 76.6 76.6:

75.8 75.9 75.1 74.9 SYSTEM SYSTEM 73.4 73.5 73.3 73.3 72.4 72.3 71.9 71.9 71.7 71.9 73.2 73.6 73.6 73.8 73.2 73.3 72.6 72.5 72.5 72.6 72.0 72.0 72.2 72.4 72.9 73.2 80.0 80.0 79.8 79.8 7 78.3 77.8 7 77.0 77.0 7 77.4 77.4 76.6 76.6 76.1 76.1 75.0 75.2 INOPERATIVE INOPERATIVE 73.5 73.7 73.3 73.2 72.2 72.2 71.9 71.8 72.0 72.3 73.9 74.1 74.0 73.9 73.4 73.4 72.6 72.7 72.7 72.7 72.0 72.0 72.8 73.1.

73.6 73.7 0.0 79.9 77.7 77.0 7.5 76.5 76.1 75.3 73.7 73.2 72.2 71.9 72.7 74.2 73.7 73.4 72.7 72.6 72.1 73.3 73.7 80.1 79.8 77.5 77.1 77.6 76.4 76.3 75.3 73.6 73.2 72.2 71.9 73.0 74.5 73.6 73.4 72.7 72.6 72.1 73.3 73.6 80.1 79.8 77.4 77.2 77.7 76.4 76.6 75.2 73.6 73.2 72.3 71.9 73.0 74.7 73.6 73.4 72.8 72.6 72.3 73.3 73.5 80.0 79.7 77.3 77.4 77.7 76.4 76.8 75.0 73.5 73.1 72.3 71.9 73.0 74.9 73.7 73.5 73.0 72.6 72.4 73.1 73.2 79.9 79.5 77.4 77.5 77.6 76.4 76.8 75.0 73.4 73.1 72.3 71.9 73.1 74.8 73.8 73.6 73.1 72.6 72.6 72.9 73.3 79.7 79.4 77.4 77,6 77.4 76.6 76.6 74.7 73.2 73.1 72.3 71.9 73.0 74.6 74.0 73.7 73.0 72.5 72.3 72.8 73.5 80.4 80.3 79.6 79.6 79.3 79.4 77.4 77.4 77.6 77.6 77.2 77.1 76.3. 76.3 76.4 76.2 74.4 74.2 73.3 73.2 73.0 73.1 72.4 72.4 71.9 71.8 73.0 72.9 74.5 74.5 74.2 74.2 73.7 73.6 72.9 72.9 72.4 72.3 72.2 72.2 72.7 72.5 73.6 73.6 80.3 79.7 79.4 77.5 77.6 77.0 76.6 76.;2 74.1 73.3 73.1 72.3 71.8 73.0 74.6 74.1 73.4 72.8 72.3 72.1 72.4 73.6 80.2 79.7 79.3 77.5 77.5 76.8 76.5 76.1 73.3 73.0 72.3 71.7 73.0 74.6 74.0 73.2 72.8 72.2 72.1 72.4 73.7 78.8 78.3 78.5 79.8 79.6 78.2 77.3 77.4 76.5 76.2 75.2 73.5 73.2 72.4 72.0 72.2 73.7 73.9 73.5 72.9 72.6 72.2 72.5 73.1 5

6 7

8 9

10 1"1 12 13 14 15 16 17 18 19 20 21 22 23 24 MONTHLY AVERAGE 75.2

TABLE 3.1-9 AVERAGE hOURLY TEMPERATURE IN

• VERMONT YANKEE SAMPLE STATION NO.. 3 SEPTEMBER 1980 DAILY UOUR AVERAGE 8

9 10 11 12 13' 14 15 16 17 18 19 20 21 22 23 24 DAY I

1 2

3 4

5.

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 11 2

.3 73.7 73.7 73.7 75.8 75.7 75.8 74.3' 74.1 74.1 74.3 74.1 74.1 75.5 75.5 75.4 74.9 74.9 74.8 75.3 75.3 75.2 74.4 74.3 74.2 73.2 73.1 73.0 73.6 73.6 73.6 7.3.4 73.4 73.3 72.8 72.9 72.9 72.8 72.7 72.7 71.2 71.1 71.1 71.0 70.9 70.9 69.8 69.8 69.8 69.2 69.2 69.2 67.6 67.6 67.6 66.8 66.7 66.6 66.1 66.1 66.0 65.6 65.6 65.5 66.7 66.7 66.6 67.3 67.2 67.2 66.6 66.6 66.5 66.0 65.7 65.5 65.5 65.4 65.2 64.9 64.7 64.5 62.3 62.2 62.0 61.3 61.1 61.0 60.8 60.7 60.6 73.8 75.7 74.0 73.9 75.4 74.7 75.1 74.0 72.8 73.9' 73.2 72.8 72.5 71.1 70.9 69.7 69.1 67.6 66.5 66.0 65.5 66.6 67.2 66.3 65.4 65.1 64.3 61.8 60.9 60.6 73.8 75.6 73.9 73.9 75.4 74.6 75.1 73.9 72.7 73.9 73.1 72.9 72.5 71.0 71.0 69.8 68.9 67.6 66.4 66.0 65.5 66.6

67. 1 66.2 65.3 65.0 64.1 61.7 60.8 74.0 75.7 73.9 73.9 75.3 74.5 75.0 73.7 72.7 73.8 73.0 72.9 72.4 70.9 71.0 69.7 68.8 67.5 66.3 65.9 65.5 66.6 67.0 66.1 65.2 64.9 64.0 61.5 60.6 4

5, 6

7 74.1 75.5 73.8 74.0 75.3 74.4 74.9 73.6 72.8 73.7 72.9 72.8 72.4 71.0 71.0 69.7 68.8 67.5 66.1 65.8 65.5 66.5 67.0 65.9 65.1 64.8 63.7 61.3 60.5 74.4 75.5 73.8 74.0 75.3 74.3 74.8 73.4 72.5 73.7 72.8 72.7 72.3 71.0 71.0 69.7 68.7 67.4 66.0 65.8 65.5 66.4 67.0 65.7 65.0 64.8 63.6 61.2 60.4 74.6 75.4 73.8 74.0 75.2

• 74.2 74.7 73.5 72.5 73.6 72.4 72.6 72.2 71.1 70.5 69.2 68.5 67.4 65.9 65.7 65.5 66.3 66.9 65.8 65.1 64.7 63.4 61.1 60.4 74.8 75.2 73.9 74.1 75.3 74.2 74.7 73.5 72.5 73.2 72.3 72.8 72.2 71.0 70.2 69.0 68.4 67.5 66.0 65.7 65.6 66.1 66.9 65.9 65.2 64.7 63.2 61.1 60.5

75. r 74.3 74.4 74.1 75.2 74.4 74.9 73.7 72.9 73.3 72.4 72.7 72.1 71.0 70.0 68.7 67.8 67.5 66.0 65.8 65.9 66.2 66.9 65.9 65.2 64.6 63.1 61.3 60.7 74.7 74.4 74.7 74.3 75.1 74.6 75.2 73.9 73.0 73.3 72.6 73.1 71.8 71.0 69.9 68.5 67.6 67.6 66.0 65.7 66.5 66.4 67.1.

65.9 65.2 64.7 63.0 61.5 60.8 74.9 74.7 74.9 74.5 75.1 74.8 75.5 74.0 73.4 73.4 72.8 73.4 71.8 71.0 70.0 68.6 67.6 67.6 66.1 65.7 67.1 66.6 67.2 66.0 65.4 64.8 63.0 61.6 61.0 75.2 75.5 74.9 74.9 75.0 75.1 74.8 75.2 75.1 75.1 7t.0 75.3 75.7 75.8 74.2 74.3 73.5 73.8 73.4 73.5 72.9 73.0 73.5 73.2 72.0 72.0 71.2 71.4 69.9 69.7 68.8 68.9 67.6 67.7 67.6 67.6 66.2 66.4 65.8 66.0 67.8 68.1 66.8 67.0 67.1 67.1 66.1 66.3 65.5 65.6 64.9 64.9 63.0 63.0 61.8 62.1 61.2 61.4 75.3 74.7 74.9 75.0 75;2 75.3 75.5 75.7 75.1 75.1 75.5 75;5 75.8 75.8 74.4 74.5 73.9 74.2 73.6 73.8 73.2 73.5 73.3 73.3 71.9 71.9 71.5 71.4 69.6 69.5 69.0 69.2 67.8 67.8 67.6 67.7 66.5 66.7 66.2 66.2 68.1 68.2 67.5 67.8 67.2 67.2 66.5 66.7 65.7 65.7 65.0 65.1 63.1 63.2 62.3 62.4 61.5 61.5 75.3 75.1 75.4 75.8 75.2 75.5 75.7 74.4 74.6 73.7 73.5 73.4 71.9 71.3 69.8 69.5 67.9 67.7 66.8 66.1 67.8 68.0 67.2 66.9 65.7 65.1 63.2 62.3 61.5 76.1 75.0 75.3 75.8 75.3 75.4 75.6 74.2 74.5 73.8 73.4 73.2 71.8 71.2 70.3 69.7 67.9 67.7 66.8 65.9 67.2 67.8 67.2 66.9 65.6 65.2 63.2 62.1 61.4 75.3 74.8 75.2 75.7 75.2 75.3 75.3 74.0 74.2 73.9 73.3 73.1 71.6 71.2 70.4 69.6 67.8 67.6 66.7 65.8 66.3 67.6 67.0 66.9 65.6 65.2 63.1 61.8 61.3 74.7 74.7 75.1 75.6 75.2 75.3 75.1 73.8 74.0 73.8 73.1 73.0 71.5 71.1 70.2 69.5 67.7 67.4 66.5 65.8 66.2 67.5 66.9 66.8 65.5 65.2 63.0 61.8 61.2 74.8 75.2 74.7 74.6 74.9 74.8 75.7 75.7 75.1 75.0 75.2 75.2 74.9 74.7 73.6 73.4 73.8 73.7 73.7 73.5 73.0 72.9 72.9 72.8 71.4 71.4 71.1 71.0 70.1 70.1 69.4 69.3 67.6 67.6 67.2 67.0 66.4 66.3 65.8 65.7 66.3 66.6 67.3 67.3 66.9 66.8 66.6 66.4 65.5 65.5 65.2 65.2 62.8 62.7 61.8 61.7 61.1 61.0 61.3 6L.2 75.6 74.4 74.6 75.6 74.9 75.3 74.5 73.3 73.6 73.5 72.9 72.7--

71.3 71.0 69.9 69.2 67.6 66.9 66.2 65.7 66.6 67.3 66.8 66.2 65.6 65.1 62.5 61.5 60.9 61.0 74.7 75.1 74.6 74.8 75.2 74.9 75.2 73.9 73.4 73.6 73.0 73.0 72.0 71.1 70.3 69.3 68.2 67.5 66.4 65.9 66.4 66.9 67.1 66.3 65%4 65.0 63.4 61.8 61.0 60.8 69.5 60.5 60.4 60.2 60.2 60.1 60.2 60.3 60.4 60.6 60.8 61.0 61.1 61.2 61.4 61.5 61.5 61.4 MONTHLY AVERACE 7...

2"*

I~e;~1 t7~

I.

TABLE 3.1-10 AVERACE HOURLY TEHPZRATURE IN "1 VEUMOHT YAMKEE SAMPLE STATION No. 3 OCTOBER 1980 HOUR 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DAILY AVERAGE DAY 1

2 3

4 5

6 IbJ I

61.0 61.6 62.1 61.2 60.9 61.0 60.7 60.3 58.8 58.2 57.5 57.6 56.6 56.0 55.0 54.7 54.3 54.5 54.8 55.0 53.3 53.6 52.2 50.9 49.7 48.3 47.9 47.5 46.0 45.7 44.6 60.9 61.5 62.1 61.1 60.9 61.0 60.6 60.3 59.2 58.1 57.5 57.6 56.6 55.9 54.9 54.7 54.3 54.5 54.9 55.0 53.3 53.6 52.2 51.0 49.6 48.3 48.0 47.5 46.0 45.6 44.6 60.9 61.5 62.1 61.0 60.8 60.9 60.7 60.3 59.2 57.9 57.5 57.6 56.5 55.9 54.8 54.7 54.3 54.5 54.9 55.0 53.2 53.6 52.1 51.0 49.6 48.4 48.0 47.6 46.0 45.7 44.7 60.8 61.5 62.1 61.1 60.8 60.7 61.1 60.1 59.2 57.8 57.6 57.6 56.4 55.8 54.7 54.7 54.3 54.6 54.8 55.0 53.1 53.6 52.2 51.0 49.5 48.4 48.2 47.6 46.1 45.6 44.7 60.8 61.4 62.1 61.2 60.7 60.6 61.3 60.0 59.3 57.7 57.5 57.6 56.4 55.7 54.6 54.7 54.2 54.6 54.8 55.0 53.0 53.5 52.1 5o09 49.4 48.4 48.4 47.6 46.0 45.6 44.7 60.8 61.4 62.1 61.2 60.6 60.5 61.3 59.8 59.3 57.6 57.5 57.5 56.5 55.7 54.6 54.7 54.2 54.7 54.9 55.0 52.9 53.4 52.1 50.9 49.3 48.4 48.4 47.6 46.0 45.6 44.8 60.7 61.4 62.1 61.2 60.6 60.6 61.3 59.8 58.7 57.4 57.5 57.4 56.6 55.8 54.6 54.7 54.2 54.7 54.9 55.0 53.0 53.4 52.1 50.9 49.2 48.4 48.5 47.6 46.0 45.5 44.6 60.7 " 60.7 61.3 61.3 62.1 61.8 61.2 61.2 60.5 60.5 60.5 60.6 60.6 60.2 59.8 59.3 58.2 58.4 57.3 57.3 57.5 57.5 57.3 57.2 56.7 56.7 55.7 55.1 54.4 53.9 54.6 54.1 54.2 53.7 54.7 54.5 54.9 54.9 54.7 54.3 53.1 53.2 53.2 52.8 52.1 52.0 50.9 50.9 49.0 48.9 48.4 48.3 47.8 47.4 47.5 47.3 46.0 46.0 45.4 45.4 44.5 44.4 60.7 61.3 61.6 61.3 60.5 60.5 60.2 59.1 58.4 57.2 57.5 57.4 56.8 54.8 53.6 53.8 53.4 54.3 54.9 54.0 53.3 52.6 51.8

.50.8 48.7 48.2 47.4 47.2 45.9 45.3 44.5 60.85 61.3 61.6 61.3 60.5 60.6 60.1 59.0 58.4 57.4 57.5 57.5 56.8 54.6 53.6 53.8 53.4 54.3 55.0 53.9 53.3 52.6 51.7 50.8 48.6 48.2 47.5 47.1 46.0 45.3 44.5 60.8 61.3 61.7 61.4 60.7 60.7 60.1 59.0 58.5 57.6 57.5 57.6 56.9 54.7 53.6 53.7 53.4 54.2 55.2 53.9 53.4 52.5 51.7 50.9

.48.6 48.3 47.5 47.1 46.0 45.4 44.6 60.9 61.3 61.7 61.4 60.9 60.8 60.2 59.1 58.8 57.9 57.4 57.7 57.0 54.7 53.7 53.7 53.5 54.2 55.2 54.0 53.4 52.5 51.8 50.7 48.6 48.4 47.7 47.0 46.1 45.4 44.8 61.0 61.4 61.7 61.5 61.0 60.9 60.4 59.2 58.9 58.0 57.4 57.9 57.3 54.7 54.0 53.8 53.6 54.2 55.4 53.9 53.5 52.6 51.7 50.6 48.5 48.5 47.8 47.0 46.2 45.4 44.9 61.1 61.6 61.9 61.4 61.0 61.0 60.5 59.3 59.0 58.1 57.3 57.8 56.8 54.7 54.1 53.9 53.8 54.4 55.6 54.0 53.5 52.9 51.6 50.6 48.5 48.6 48.0 47.0 46.3 45.4 45.0 61.3 61.4 61.8 61.9 61.9 62.0 61.3 61.3 61.1 61.2 61.1 61.2 60.6 60.6 59.4 59.5 59.1 59.0 58.1 58.0 57.4 57.5 57.7 57.6 56.5 56.4 54.9 55.5 54.4 55.1 54.2 54.3 53.9 54.2 54.6 54.8 55.8 55.7 54.0 53.9 53.5 53.6 52.7 52.7 51.6 51.6 50.7 50.6 48.6 48.5 48.6 48.6 48.1 48.1 47.0 46.9 46.3 46.3 45.3 45.2 45.0 45.0 61.5 61.6 62.0 62.0 61.8 61.8 61.2 61.2 61.3 61.3 61.3 61.2 60.5 60.4 59.5 59.4 58.9 58.8 58.0 57.7 57.6 57.5 57.6 57.6 56.4 56.6 55.1 54.6 54.9 54.4 54.0 53.8 54.2 54.2 54.6 54.4 55.2 54.9 53.8 53.7 53.5 53.4 52.6 52.5 51.5 51.4 50.6 50.5 48.5 48.4 48.5 48.4 48.1 48.1 46.9 46.8 46.2 46.1 45.0 44.9 44.9 44.9 61.7 62.0 61.7 61.2 61.2 61.3 60.2 59.2 58.8 57.6 57.5 57.5 56.0 54.5 54.3 53.8 54.1 54.4 54.9 53;8 53.3 52.4 51.3 50.4 48.4 48.3 48.1 46.6 46.0 44.9 44.8 61.7 62.0 61.6 61.1 61.3 61.2 60.0 59.0 58.7 57.6 57.5 57.4 55.8 54.4 54.2 53.7 54.1 54.4 54.9 53.7 53.3 52.3 51.2 50.3 48.4 48.2 47.9 46.5 45.9 44.8 44.9 61.7 61.9 61.5 61.1 61.2 61.1 59.8 58.9 58.6 57.5 57.5 57.2 56.1 54.4 54.3 53.6 54.2 54.4 54.7 53.6 53.3 52.2 51.0 50.2 48.4 48.1 47.8 46.3 45.8 44.7 45.0 61.7 62.1 61.4 61.0 61.1 60.9 59.8 58.7 58.4 57.6 57.5 57.0 56.2 54.5 54.7 54.0 54.4 54.7 54.8 53.5 53.6 52.1 51.0 50.1 48.3 48.1 47.5 46.1 45.7 44.6 45.0 61.6 62.1 61.3 60.9 61.1 60.8 60.1 58.6 58.3 57.5 57.5 56.8 56.1 54.9 54.7 54.3 54.5 54.9 55.0 53.5 53.7 52.1 50.9 49.9 48.3 48.0 47.5 46.0 45.7 44.8 45.1 61.1 61.6 61.8 61.2 60.9 60.9 60.5 59.4 58.8 57.7 57.5 57.5 56.5 55.1 54.4 54.2 54.0 54.5 55.0 54.2 53.3 52.8

-51.7 50.7 48.8 48.3 47.9 47.1 46.0 45.3 44.8 MONThLTAVERAGE 54.6

TABLE 3.1-11 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 3 NOVEMBER 1980 DAY

- HOUR DAILY AVERAGE 1

2 3

4.

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 I

,JJ 0

45.2 45;3 45.3 45.3 44.5 44.5 44.1 44.3 43.7 43.6 44.1 44.0 44.1 44.1 43.6 43.7 42.8 42.8 43.4 43.4 42.0 42.0 41.0 41.0 39.8-39.7 39.4 39.5 40.0 40.0 39.6 39.6 38.5 38.5 38.0 38.0 36.8 36.7 36.0 36.0 35.4 35.6 35.2 35.2 34.8 34.9 35.5 35.4 35.3 35.4 36.7 36.7 35.7 35.6 35.2 35.2 35.5 35.5 35.5 35.5 45.3 45.3 44.8 44.3 43.6 43.9 44.0 43.7 42.7 43.4 42.0 41.0 39.6 39.5 40.0 39.6 38.5 38.0 36.5 36.0 35.7 35.1 34.9 35.4 35.5 36.7 35.5 35.2 35.5 35.6 45.4 45.3 44.9 44.3 43.5 43.9 44.1 43.7 42.7 43.4 42.0 40.9 39.5 39.4 40.0 39.5 38.5 37.9 36.4 35.8 35.7 35.1 34.8 35.4 35.6 36.8 35.4 35.1 35.5 35.7 45.5 45.3 44.9 44.3 43.4 43.9 44.1 43.7 42.6 43.3 42.0 40.8 39.4 39.5 39.9 39.4 38.4 37.7 36.2 35.7 35.6 35.0 34.7 35.4 35.6 36.7 35.3 35.0 35.5 35.6

.45.5 45.3 44.8 44.4 43.5 43.8 44.0 43.7 42.7 43.3 41.9 40.7 39.3 39.5 39.8 39.3 38.1 37.5 36.0 35.6 35.6 34.8 34.7 35.4 35.6 36.8 35.2 35.0 35.4 35.7 45.5 45.3 45.3 45.3 45.3 45.3 44.8 44.7 44.7 44.4 44.3 43.9 43.4 43.5 43.6 43.9: 43.9 43.6 44.1 44.0 44.0 43.7 43.7 43.8 42.6 42.6 42.7 43.2 43.2 43.3 41.9 41.9 41.8 40.5 40.5 40.5 39.1 39.0 39.1 39.4. 39.3 39.4 39.8-39.9 39.8 39.3 39.3 39.3 37.9'. 38.0 37.9 37.5 37.5 37.5 35.8 35.8 35.8 35.5 35.6 35.6 35.7 35.9 36.0 34.8 34.7 34.7 34.7 34.7 34.7 35.4 35.4 35.5 35.7 35.7 35.8 36.7 36.7 36.5 35.0 34.9 34.8 35.0 35.1 35.0 35.4 35.4 35.4 35.7 35.7 35.6 45.2 45.2 45.2 45.4 45.5 45.6 44.7 44.4 44.2 43.6 43.6 43.7 43.8 43.7 43.7 43.5 43.5 43.5 44.0 44.0 44.1 43.8 43.8 43.8 42.8 42.9 43.0 43.3 43.3 43.4 41.8 41.7 41.7 40.7 40.8 40.7 39.3 39.3 39.5 39.4 39.6 39.9 40.0 40.2 40.4 39.5 39.6 39.7 37.9 38.2 38.5 37.5 37.4 37.4 36.0 36.3 36.6 35.6 35.8 36.3 36.1 36.1 36.2 34.8 34.7 34.8 34.7 34.8 35.0 35.4 35.4 35.4 35.9 35.9 36.1 36.4 36.5 36.7 34.8 34.9 35.2 34.9 35.0 35.0 35.4 35.4 35.6 35.6 35.5 35,7 45.2 45.7 44.2 43.8 43.8 43.6 44.2 43.9 43.1 43.5 41.7 40.6 39.6 40.1 40.4 39.8 38.4 37.5 36.8 36.5 36.4 35.0 35.3 35.5 36.3 36.8 35.3 35.1 36.0 35.8 45.5 45.9 44.3 43.9 43.9 43.7 44.3 43.8 43.3 43.5 41.8 40.6 39.6 40.2 40.5 39.8 38.5 37.5 37.0 36.6 36.6 35.3 35.4 35.6 36.4 37.0 35.4 35.2 36.1 35.9 45.7 45.9 44.4 44.1 44.0 43.8 44.4.

44.0 43.3 43.5 42.0 40.7 39.7 40.3 40.5 39.8 38.5 37.6 37.2 36.7 36.6 35.5 35.5 35.7 36.5 37.1 35.5 35.3 36.0 36.0 45.7 46.0 44.4 44.1 44.1 44.3 43.3 43.5 42.0 40.7 39.8 40.3 40.3 39.7 38.5 37.5 37.0 36.6 36.6 35.6 35.5 35.6 36.5 37.0 35.5 35.3 35.9 35.9 45.5 45.7 44.4 44.1 44.0 44.2 44.5 43.7 43.4 43.4 41.9 40.8 39.8 40.2 40.1 39.5 38.5 37.3 36.7 36.5 36.4 35.5 35.4 35.6 36.5 36.8 35.5 35.4 35.8 35.7 45.2 45.3 44.3 43.9 43.9 44.0 44.4 43.5 43.5 43.2 4i.8 40.7 39.7 40.3 40.0

.39.4 38.5 37.3 36.4 36.3 36.3 35.4 35.4 35.5 36.5 36.7 35.5 35.4 35.7 35.6 45.1 45.1 44.2 43.9 43.9 44.0 44.2 43.4 4316 43.0 41.7 40.7 39.7 40.4 40.0 39.2 38.5 37.4 36.3 36.2 36.1 35.3 35.3 35.6 36.5 36.5 35.4 35.4 35.7 35.6 45.1 45.2 44.1 43.9 43.8 44.0 43.9 43.3 43.7 42.7 41.7 40.5 39.6 40.3 39.9 39.3 38.5 37.4 36.3 36.0 35.9 35.3 35.3 35.5 36.6 36.3 35.4 35.4 35.7 35.5 45.0.45.3 45.2 45.3.

44.0 43.8 43.8 43.8 43.7 43.7 44.2.44.3 43.7 43.6 43.0 43.0 43.6 43.5*

42.6 42.5 41.6 41.4 40.4 40.2 39.6 39.5 40.3 40.1 39.9 39.8 39.1. 38.8 38.4 38.4 37.4 37.3 36.2 36.0 35.9 35.6 35.7 35.6 35.2 35.0 35.3 35.4 35.4 35.4 36.6 36.6 36.0 35.8 35.3 35.2 35.5 35.5 35.6 35.6 35.5 35.4 45.3 45.0 43.7 43.7 43.8 44.2 43.6 42.9 43.5 42.3 41.3 40.0 39.5 40.0 39.8 38.7 38.4 37.1 36.0 35.4 35.4 35.0 35.4 35.3 36.6 35.7 35.2 35.5 35.5 35;.3 45.3 44.6 43.7 43.7 44.0 44.1 43.6 42.9 43.4 42.0 41.2 39.8 39.5 40.0 39.7 38.5 38.1 37.0 36.0 35.3 35.3 34.9 35.4 35.3 36.6 35.7 35.2 35.5.

35.5 35.3 45.3 45.4 44.4 44.0 43.7 43.9 44.1 43.6 43.1 43.2 41.8 40.6 39.5.

39.8 40.0 39.4 38.3 37.5 36.4 36.0 35.9 35.1 35.1 35.5 36.1 36.6 35.3 35.2 35.6 35.6 39.5 MOWNMLY AVERAGE

W -P17 r,

fmfm TABLE 3.1-12 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO.

3 DECEMBER 1980 DAILY AVERAGE DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 35.4 35.8 35.8 35.3 34.2 32.6 32.5 32.5 32.5 32.7 32.8 32.1 32.5 32.3 32.4 32.5 32.3 32.3 32.3 32.3 32.3 32.4 32.3 32.3 32.3 32.1 32.2 32.0 35.4 35.4 35.8 35.7 36.0 36.0 35.3 35.2 34.1 33.9 32.6 32.5 32.5 32.4 32.5 32.5 32.7 32.7 32.7 32.8 32.8 32.9 32.1 32.2 32.5 32.5 32.3 32.3 32.5 32.4 32.4 32.7 32.3 32.4 32.3 32.3 32.3 32.4 32.5 32.3 32.3 32.4 32.5 32.5 32.3 32.3 32.3 32.3 32.3 32.3 32.1 32.0 32.2 32.1 32.0 32.1 35.5 35.7 36.0 35.2 33.8 32.4 32.4 32.5 32.6 32.8 32.9 32.3 32.5 32.3 32.4 32.4 32.4 32.'3 32.4 32.3 32.5 32.4 32.4 32.4 32.3 32.1 32.2 32.1 35.5 35.7 36.0 35.2 33.6 32.4 32.4 32.6 32.6 32.8 32.7 32.3 32.4 32.3 32.4 32.4 32.3 32.3 32.4 32.3 32.4 32.4 32.4 32.4 32.4 32.0 32.1 32.2 35.5 35.8 35.9 35.1 33.5 32.4 32.4 32.7 32.5 32.8 32.5 32.2 32.4 32.3 32.4 32.4 32.3 32.3 32.4 32.3 32.4 32.4 32.4 32.4 32.4 32.0 32.2 32.2 35.5 35.8 35.8 35.1 33.4 32.3 32.3 32.6 32.5 32.7 32.3 32.3 32.4 32.3 32.4 32.4 32.3 32.3 32.4 32.3 32.4 32.4 32.3 32.4 32.4 32.0 32.2 32.2 35.6 35.8 35.8 35.0 33.2 32.3 32.4 32.5 32.5 32.7 32.3 32.4 32.4 32.3 32.5 33.0 32.9 32.4 32.4 32.3 32.4 32.4 32.7 32.4 32.4 32.1 32.1 32.3 35.6 35.8 35.7 35.0 33.2 32.3 32.3 32.6 32.6 32.7 32.2 32.4 32.4 32.9 33.0 33.0 32.9 33.2 33.3 32.9 32.4 33.2 33.3 33.3 32.4 32.1 32.1 32.3 35.6 35.7 35.6 34.9 33.1 32.3 32.4 32.5 32.8 32.6 32.1 32.5 32.9 32.7 32.8 33.1 32.7 33.0 33.2 33.1 32.4 33.1 33.1 33.0 32.4 32.1 32.2 32.4 35.7 35.9 35.7 35.0 33.0 32.3 33.0 32.6 33.0 32.7 32.1 32.6 32.8 32.5 32.7 32.9 32.5 32.8 32.9 33.0 32.4 32.9 32.9 32.7 32.5 32.2 32.3 32.5 35.9 36.0 35.7 35.0 33.1 32.4 32.8 32.5 33.2 33.1 32.,3 32.6 32.6 32.5 32.6 32.7 32.5 32.6 32.7 32.9 32.8 32.7 32.7 32.6 32.6 32.2 32.4 32.5 36.2 36.2 35.8 35.0 33.1 32.5 32.7 32.5 33.4 33.2 32.5 32.5

.32.5 32.5 32.6 32.5 32.5 32.5 32.5 32.6 33.0 32.6 32.6 32.6 32.6 32.3 32.5 32.5 36i4 36.1 36.0 35.1 33.1 32.6 32.7 32.5 33.3 33.0 32.6 32.6 33.3 32.6 32.6 32.5 32.5 32.5 32.5 32.5 32.7 32.4 32.4 32.6 32.6 32.4 32.5 32.6 36.5 36.3 36.2 35.0 33.2 32.6 32.7 32.5 33.2 33.0 32.7 32.6 33.0 32.6' 32.6 32.5 32.5 32.4 32.5 32.4 32.6 32.4 32.4 32.5 32.7 32.4 32.6 32.6 36.6 36.2 35.9 35.0 33.2 32.6 32.7 32.6 33.0 32.9 32.5 32.6 32.7 32.6 32.6 32.5 32.5 32.5 32.5 32.4 32.6 32.5 32.4 32.7 32.6 32.3 32.5 32.6 36.6 36.0 35.8 34.9 33.2 3i.6 32.7 32.6 32.9 32.9 32.4 33.1 32.6 33.3 32.8 32.6 32.5 32.4 32.4 32.5 32.6 32.5 32.4 32.4 32.5 32.3 32.4 32.6 36.5 36.0 35.7 34.9 33.1 32.6 32.6 32.5 32.9 32.8 32.2 33.1 32.5 33.0 33.2 32.6 32.5 32.4.

32.4 33.3 33.3 33.1 33.3 33.3 32.5 32.2 32.3 32.5 36.4 35.9 35.6 34.8 33.1 32.6 32.6 32.5 32.8 32.9 32.2 32.8 32.5 32.7 32.9 32.5 32.4 32.4 32.4 33.0 33.2 33.0 33.1 33.0 32.4 32.2 32.2 32.6 36.4 35.8 35.5 34.7 32.9 32.5 32.6 32.5 32.8 32.8 32.1 32.7 32.5 32.6 32.7 32.5 32.4 32.4 32.4 32.7 32.9 32.7 32.8 32.8 32.4 32.2 32.2 32.5 36.4 35.8 35.5 34.5 32.9 32.5 32.6 32.5 32.8 32.9 32.0 32.6 32.5 32.5 32.7 32.4 32.4 32.4 32.4 32.6 32.7 32.6 32.6 32.6 32.4 32.2 32.1 32.6 36.3 35.8 35.5 34.4 32.8 32.5 32.6 32.5 32.8 32.9 32.0 32.5 32.4

'32.5 32.6 32.4

• 32.4 32.4 32.4 32.4 32.6 32.5 32.6 32.5 32.3 32.3

.32.1 32.5 36.2 35.8 35.4 34.4 32.7 32.5 32.6 32.5 32.8 32.8 32.0 32.5 32.4 32.4 32.5 32.4 32.4 32.4 32.3 32.4 32.4 32.5 32.5 32.5 32.2 32.2 32.0 32.5 36.0 35.8 35.3 34.3 32.7 32.5 32.6 32.5 32.7 32.7 32.0 32.5 32.3 32.4 32.5 32.3 32.3 32.3 32.3 32.4 32.4 32.4 32.4 32.4 32.2 32.2 32.0 32.5 36.0 35.9 35.8 34.9 33.3 32.5 32.6 32.5 32.8 32.8 32.4 32.5 32.6 32.5 32.6 32.6 32.5 32.5 32.5 32.6 32.6 32.6 32.6 32.6

.32.4 32.2 32.2 32.4 32.8 SYSTEM INOPERATIVE SYSTEM INOPERATIVE 32.2 32.2 32.2 32.4 32.7 32.7 32.6 32.6 32.6 32.5 32.5 32.4 32.3 33.0 33.1 32.9 32.9 33.0 33.2 33.2 33.2 33.2 32.3 32.3 32.2 32.2 32.2 32.8 33.2 33.4 33.1 33.0 33.0 MONTHLY AVERAGE 33.0

TABlLE 3.2-1 AVERAGE HOUR~LY TEMPERATURE IN OF VERMONT YANKEE SAMPLE STATION NO. 7 JANUARY 1980 HOUR DAY 1

2 3

4 -

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 I.

32.0

32. 0 32.0 32.0 32.0 *32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.0 32.0 32.1. 32.1 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0.

32.1 32.1 32.0 32.1 32.1 32.0

.32.0 32.0 32.0 32.0 32.0

'32.0 32.0 32.0D 32.1 32.1 32.2 32.2 32.0 32.1 32.1 32.0 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.1 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32;0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0- 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.0 32.0 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.2 32.1 32.1 32.0 32.0 32.1' 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.1 32.3 32.0 32.0 32.0 32.0 32.1 32.2 32.1 32.0 32.1 32.0 32.0 32.0 32.0.

32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.1

'32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1-32.1 32.1 32.0 32.0 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.2 32.2 32.0 32.1 32.0 32.1 32.1 32.1 32.0 32.0. 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32;0 32.1 32.0 32.0 32.0 32.1 32.1 32.1 32.1 32.2 32.2 32.0 32.1 32.1 32.1 32.2 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.3 32.1 j2.0 32.0 32.1 32.1 32.1 32.1 32.3 32.4 32.3 32.1. 32.2 32.2 32.0 32.1 32.2

.32.1 32.2 32.2 32.0. 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 -32.0 32.0 32.0 32.0 32.0 32.1 32.2.

32.1 32.2 32.0 32.0 32.0 32.0 32.1 32.2 32.1 32.1 32.1 32.1 32.3 32.2 32.1 32.2 32.2 32.3 32.0 32.1 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.1 32.2 32.1 32.4 32.4 32.2 32.2 32.2 32.2 32.2.32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.2 32.0 32.0 32.2 32.1 32.2 32.2 32.2 32.3 32.1 32.0 32.0 32.1 32.1 32.2 32.4 32.2 32.0 32-.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0

'32.0 32.1 32.2 32.2 32.0-32.0 32.2 32.1 32.2 32.3 32.3 32.3 32.0 32.0 32.0 32.1 32.1 32.2 32.3 32.2 32.2

'32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.2 32.0 32.0 32.2

.32.1 32.2 32.3 32.3 32.2 32.0 32.0 32.0 32.1 32.1 32.1 32.3 32.1 32.1 37.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.2 32.0 32.0 32.2 32.1 32.1 32.2 32.2 32.2 32.0 32'.0 32.0 32.1 32.1 32.1 32.3 32.1 32.3 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.2 32.0 32.0 32.1 32.1 32.1 32.2 32.2 32.2 32.0 32.0 32.0 32.1 32.1 32.1 32.3 32.1 32.3 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.0 32.1 32.1 32.1 32.1 32.2 32.3 32.1 32.0 32.0 32.0 32.1 32.2 32.2 32.3 32.2 32.3 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.0 32.0 32.1 32.1 32.1 32.2 32.3 32.2 32.0 32.0 32.0 32.1 32.3 32.0 32.3 32.3 32.2 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32'.0 32.0 32.1 32.1 3231 32.0 32.0 32.1 32.1 32.1 32.2 32.2 32.1 32.0 32.0 32.0 32.1 32.2 32.2 32.2 32.2 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.0 32.0 32.1 32.1 32.1 32.1 32.2 32.1 32.0 32.0 32.0 32.1 32.2 32.1 32.2 32.2 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0.

32.0 32.0 32.1 32.0 32.0 32.1 32.1 32.1 32.1 32.1 32.1 32.0 32.0 32.0 32.0 32.2 32.1 32.1 32.1 32.2 32.0 DAILY AVERAGE 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.0 32.0 32.1 32.1 32.1 32.2 32.1 32.2 32.0 32.0 32.0 32.1 32.1 32.1 32.3 32.1 32.1 32.1 MONTHLY AVERAGE 32.1

TABLE 3.2-2 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 7 FEBRUARY 1980 DAILY AVERAGE I

DAY I

2 3

4 5

6.

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 32.0 32.0 32.1 32.1 32.3 32.3 32.4 32.4 32.2 32.5 32.3 32.3 32.3.32.3 32.1 32.1 32.2 32.2 32.2 32.2 32.3 32.3 32.3 32.2 32.2 32.2 32.3 32.3 32.4 32.4 32.5 32.5 32.2 32.2 32.1 32.2 32.1 32.2 32.1 32.1 32.0 32.0 32.0 32.0 3i.0 32.0 31.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.5 32.2.

32.3 32.3 32.2 32.2 32.2 32.3 32.2 32.3 32.3 3Z.4 32.5 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.6 32.5 32.2 32.2 32.3 32.2 32.1 32.2 32.3 32.1 32.3 32.3 32.4 32.5 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.5 32.1 32.2 32.3 32.1 32.2 32.2 32.4 32.1 32.1 32.3 32.4 32.5 32.2 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.4 32.3 32.4 32.4 32.1 32.2 32.2 32.2 32.3 32.3 32.1 32.3 32.2 32.3 32.2 32.2 32.3 32.4 32.4 32.1 32.1 32.1 32.3 32.2 32.3 32.3 32.4 32.4 32.2 32.2 32.1 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0- 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.4 32.2 32.2 32.2 32.3 32.3 32.3 32.4 32.1 32.1 32.2 32.3 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.4 32.2 32.2 32.2 32.3 32.2 32.2 32.4 32.2 32.1 32.2 32.3 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3.

32.5 32.3 32.2 32.2 32.3 32.2 32.2 32.4 32.2 32.2 32.3 32.3 32.4 32.2 32.1 32.0.

32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.3 32.5 32.3 32.2 32.2 32.2 32.2 32.3 32.3 32.3 32.2 32.3 32.4 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.4 32.5 32.2 32.3 32.2 32.2 32.2 32.3 32.3 32.4 32.3 32.3 32.4 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.4 32.6 32.4 32.3 32.2 32.2 32.2 32.2 32.4 32.4 32.4 32.3 32.5 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.2 32.4 32.5 32.4 32.4 32.2 32.1 32.2 32.3 32.5 32.3 32.4.

32.4 32.4 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.3 32.5 32.5 32.3 32.4 32.2 32.1 32.1 32.2 32.5 32.4 32.4 32.3 32.5 32.4 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.3 32.4 32.5 32.3 32.3 32.2 32.2 32.1 32.2 32.5 32.4 32.4 32.3 32.5 32.3 32.2 32.1 32.0 32.0 32.0 32.0 3Z.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.3 32.4 32.5 32.3 32.3 32.2 32.2 32.1 32.2 32.5 32.4 32.4 32.3 32.5 32.3 32.2 32.1 32.0 32.0 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.3 32.4 32.5 32.3 32.3 32.2 32.2 32.2 32.2 32.5 32.3 32.4 32.3 32.4 32.3 32.2 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.2 32.2 32.2 32.3 32.3 32.5 32.8 32.3 32.3 32.3 32.3 32.2 32.3 32.3 32.1 32.2 32.2 32.2 32.2 32.5' 32.5 32.4 32.4 32.4 32.4 32.3 32.4.

32.4 32.4 32.3' 32.3 32.2 32.2 32.1 32.0 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.2 32.3 32.3 32.3 32.3 32.3 32.2 32.2 32.2 32.5 32.4 32.5 32.4 32.7 32.3 32.2 32.1 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.2 32.2 32.2 32.3 32.3 32.3 32.3.

32.2 32.2 32.2 32.3 32.6 32.3 32.4 32.4 32.4 32.3 32.2 32.1 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.1 32.2 32.3 32.4 32.2 32.3 32.3 32.2 32.2 32.2 32.3 32.6 32.3 32.4 32.4 32.4 32.3 32.2 32.4 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.1 32.2 32.2 32.3 32.2 32.3 32.3 32.2 32.1 32.2 32.3 32.5 32.2 32.4 32.4 32.5 32.2 32.2 32.1 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.2 32.4 32.4 32.3 32.3 32.2 32.2 32.2 32.2 32.4 32.3 32.3 32.3 32.4 32.4 32.2 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 HOUR MONTHLY AVERAGE 32.2

TABLE 3.2-3 AVERAGE HOURLY TEMPERATURE IN *?

VERMONT YANKEE SAMPLE STATION NO.

7 MARCH 1980 HOUR DAY 1

2 3*

4' 5

6 7

8 9

, 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 w

I.

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32.0 32.0 32.0. 32.0 32.1 32.0 32.1 32.1 32.0 32.0 32.0 32.0 32.2 32.2 32.1 32.1 32.0 32.0 32.3 32.2 32.1 32.1 32.1 32.0 32.1 32.1 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.2 32.5 32.5 33.9 33.8 34.2 34.2 33.2 33.1 33.6 33.6 34.6 34.5 36.1 36.1 36.4 36.4 36.0 36.0 32.0 32.0 32.1 32.0 32.0 32.0 32.2 32.0 32.0 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0

,32.0 32.2 32.5 33.7 34.2 33.2 33.6 34.4 36.0 36.3 36.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.0 32.0 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.5 33.5 34.3 33.1 33.6 34.4 35.9 36.3 36.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.2

.32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.5 33.4 33.6 33.2 33.5 34.5 35.8 36.3 35.9 32.0 32.0 32.1 32.0 32.0 32.0 32.1 32.1 32.0 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.5 33.3 33.4 33.1 33.5 34.5 35.7 36.3 35.9 32.0 32.0 32.1 32.0 32.0 32.0 32.1 32.2 32.0 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.2 32.2 32.4 33.2

.33.9 33.2 33.6 34.5 35.7 36.4 35.9 32.0 32.0 32.1 32.0 32.0 32.0 32.1 32.0 32.0 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.1 32.4 33.2 33.6 33.2 33.7 34.6 35.6 36.5 36.1 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.2 32.2 32.1 32.1 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.5 33.3 33.5 33.3 34.0 34.8 35.5 36.5 36.3 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.0 32.0 32.2 32.2 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.5 33.5 33.6 33.4 34.8 35.2 35.4 36.5 36.6 32.d 32.0 32.1 32.1 32.0 32.0 32.2 32.0.

32.0 32.2 32.1 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0

.32.1 32.5 33.5 33.5 33.5 34.9 35.6 35.3 36.6 36.7 32.0 32.1 32.1 32, 0 32.1 32.0 32.2 32.1 32.1 32.3 32.1 32.3 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.6 33.6 33.3 33.9 35.3 35.8 35.2 36.6 36.6 32.0 32.1 32.1 32.1 32.1 32.1 32.3 32.1 32.1 32.3 32.2 32.3 32.3.

32.0 32.0 32.0 32.0 32.1 32.1 32.1 32;0 32.1 32.6 33.7 33.4 33.9 35.8 36.1 35.2 36.5 36.8 32.0 32.1 32.1 32.4 32.1 32.1 32.2 32.0 32.2 32.3 32.2 32.3 32.3 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.0 32.2 32.8 33.8 33.3 33.9 35.5 35.9 35.5 36.5

.36.8 32.0 32.0 32.1 32.1 32.1 32.1 32.3 32.0 32.2 32.3 32.2 32.3 32.2 32.0 32.0 32.0 32.0 32.1 32.1 32.;2 32.0 32.3 32.9 33.9 33.1 34.0 35.1 35.8 35.7 36.4 36.9 32.0 32.0 32.1 32.1 32.3 32.1 32.2 32.0 32.2 32.3 32.2 32.3 32.2 32.0 32.0 32.0 32.0 32.1 32.2 32.2 32.0 32.4 33.1 34.0 33.2 34.2 34.6 35.7 36.0 36.4 36.9 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.1 32.1 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.2 32.2 32.2 32.0 32.0 32.0 32.2 32.2 32.2 32.3 32.3 32.3 32.2 32.1 32.1 32.3 32.3 32.3 32.2 32.3 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.1 32.1 32.1 32.2 32.1 32.2 32.2 32.2 32.0 32.4 32.7 32.4 32.5 32.5 33.2 33.3 33.4 34.1 34.2 34.3 33.4 33.6 33.7 34.1 33.9 33.9 34.7 34.6 34.4 35.6 35.6 35.7 36.2 36.3 36.4 36.3 36.2,36.2 36.9 36.9 36.9 32.0 32.1 32.1 32.1 32.3 32.1 32.2 32.0 32.1 32.4 32.2 32.3 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.2 32.6 32.6 33.5 34.4 33.6 34.0 34.5 35.8 36.5 36.1 37.0 32.0 32.0 32.1 32.1 32.1.32.1 32.1 32.1 32.0 32.0 32.2 32.2 32.2 32.2 32.0 32.0 32.3 32.3 32.4 32.4 32.3 32.2 32.2 32.2 32.2 32.1 32.0 32.0 32.0 32.0.

32.0 32.0 32.1 32.1 32.0 32.1 32.0 32.0 32.1 32.0 32.6 32.6 32.6 32.6 33.5 33.6 34.3 34.4 33.4 33.4 33.9 33.9 34.7 34.6 36.1 36.3 36.5 36.5 36.0 36.0 37.1 37.1 32.0 32.0 32.2 32.0 32.0 32.1 32.2 32.0 3203 32.3 32.2 32.2 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.6 33.7 34.4 33.2 33.8 34.6 36.4 36.5 36.0 36.9 32.0 32.0 32.2 32.0 32.0 32.2 32.2 32.0 32.3 32.2 32.2 32.1 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.6 33.8 34.3 33.3 33.7 34.6 36.3 36.5 36.0 36.8.

DAILY AVERAGE 32.0 32.0 32.1 32.1 32.0 32.1 32.2 32.0 32.1 32.3 32.2 32.2 32.1 32.0 32.0

• 32.0 32.0 32.0-32.0 32.1 32.1 32.3 32.9 33.8 33.6 33.6 34.4 35.4 35.9 36.3 36.5 32.8 MONTHLY AVERAGE

TABLE 3.2-4 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 7 APRIL 1980 DAILY HOUR AVERAGE DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 122 23 24 36.7 36.6 38.3.38.2 37.8 37.7 40.1 40.1 38.0 37.9 37.1 37.3 39.1 38.9 40.0 40.0 39.5 39.5 40.3 40.4 39.0 39.0 40.2 40.2 39.9 39.9 40.7 40.7 40.3 40.2 41.7 41.6 40.7 40.5 41.3 41.4 41.5 41.5 42.3 42.3 42.7 42.7 Iw LnI 36.5 36.4 38.2 38.2 37.7 37.6 40.0 39.9 37.8 37.7 37.2 37.1 38.8 38.7 39.9 39.9 39.5 39.5 40.5 40.4 39.0 39.0 40.2 40.2 39.8 39.6 40.6 "40.5 40.2 40.1 41.5 41.4 40.4 40.2 41.4 41.3 41.4 41.4 42.3 42.3 42.7 42.7 44.3 44.3 45.4 45.4 45.7 45.5 46.0 46.0 47.4 47.7 47.7 45.4 45.5 45.0 45.0 36.4 38.1 37.5 39.8 37.6 37.0 38.5 40.0 39.5 40.2 39.0 40.1 39.6 40.4 40.1 41.3 40.0 41.1 41.3 42.2 42.7 44.3 45.5 45.4 46.1 47.4 47.7 45.5 44.9 36.3 38.1 37.5 39.6 37.6 36.9 38.3 40.0 39.5 39.9 39.0 40.0 39.6 40.3 40.L 41.2 39.9 40.9 41.1 42.5 42.6 44.3 45.6 45.3 46.1 47.3 47.7 45.5 44.9 36.3 38.1 37.5 39.5 37.6 36.9 38.3 40.0 39.6 39.7 39.0 40.0 39.5 40.2 40.1 41.1 39.8 40.7 41.0 42.3 42.7 44.3 45.7 45.3 46.1 47.3 47.7 45.5 44.8 36.3 38.1 37.6 39.4 37.5 36.9 38.5 40.1 39.6 39.5 39.0 39.9 39.6 40.2 40.2 41.1 39.9 40.5 41.0 42.5 42.9 44.4 45.7 45.3 46.1 47.3 47.6 45.5

.44.8 36.4

.38.1 37.9 39.4 37.6 36.9 38.8 40.2 39.7 39.4 39.0 39.8 39.7 40.2 40.2 41.1 40.0 40.5 41.2 42.8 43.1 44.5 45.7 45.4 46.1 47.4 47.6 45.4 44.7 36.8 38.1 38.4 39.3 37.7 37.2 39.1 40.2 39.8 39.3 39.0 39.7 39.7 40.3 40.3 41.3 40.1 40.6 41.5 43.1 43.5 44.6 45.7 45.5 46.1 47.6 47.5 45.3 44.7 37.0 38.1 39.0 39.3 38.1 37.5 39.4 40.3 39.9 39.3 39.1 39.6 39.9 40.4 40.8 41.3 40.4 40.6 41.6 43.2 43.7 37.2 38.0 39.4 39.2 38.2 37.7 39.8 40.3 40.0 39.3 39.2 39.5 40.1 40.5 40.9 41.5 40.6 40.5 41.7 42.9 44.0 37.5 38.0 39.6 39.2 38.4 37.7 39.5 40.4 40.1 39.3 39.3 39.4 40.4 40.5 41.2 41.7 40.8 40.4 42.0 43.2 44.1 37.9 37.9 39.7 39.0 38.4 37.9 39.5 40.3 40.1 39.3 39.5 39.4 40.7 40.6 41.4 41.8 40.9 40.6 42.1 42.8 44.2 37.9 37.8 39.8 38.9 38.6 38.5 39.4 40.2 40.1 39.3 39.5 39.5 41.0 40.5 41.8 41.8 41.1 41.1 42.2 42.7 44.3 45.2 46.2 46.0 47.2 47.9 46.8 45.0 45.6 38.0 37.8 39.6 38.8 38.7 38.9 39.5 40.1 40.1 39.3 39.8 39.7 41.2 40.6 42.1 41.9 41.2 41.3 42.3 42.7 44.4 45.3 46.4 46.0 47.3 47.8

.46.6 45.0 45.8 37.9 38.0 37.8 37.8 39.5 39.5 38.6 38.5 38.6 38.4 38.8 38.7 39.5 39.5 40.1 40.0 40.1 40.1 39.3 39.3 40.0 40.2 39.8 39.9 41.4 41.4 40.6 40.6 42.2. 42.2 42.0 41.9 41.2 41.1 41.3 41.2 42.5 42.5 42.7 42.7 44.4 44.3 45.3 45.3 46.4 46.3 46.0 46.0 47.4 47.6 47.8 47.7 46.4 46.2 45.0 44.9 45.8 45.9 38.0 37.8 39.6 38.4 38.2 38.8 39.5 39.9 40.1 39.2 40.2 40.0 41.3 40.6 42.2 41.8 41.0 41.2 42.4 42.7 44.2 45.2 46.4 46.0 47.7 47.7 46.0 44.9 46.0 38.3 38.4. 38.5 37.9 37.9 " 37.9 39.8 40.0' 40.1 38.4 38.2 38.2 37.9 37.8 37.7 38.9 39.0'39.1 39.6 39.7:'39.8 39.9 39.8-39.8 40.140.1 40.1 39.1 39 ;1 39..1 40.2 40. 3 40.3 40.1'.40.0 4o.o 41.0. 40.9 40.8 40.5 40a.5 40.5 42.1 41.9 41.8 41.6.41.4 '41.2 40.9. 41,0!:!41.0 41.1" 41.2 :41.3 42.3 :42.3'42i.3 42.7 42.6 42.6 44.1 440 4.0 45.1 45.1 !45.1 46.6 46.6 *46.6 46.0 46.0 46.0 47.7 47.7 47.7 47.7 47.7 47.6 45.9 45.8 *45.6 44.9 44.9 44.9 46.0 46.1 46.1 38.5 37.9 40.2 38.2 37.6 39.1 39.9 39.7 40.1 39.1 40.2 39.9 40.8 40.4 41.7 41.0 41.1 41.4 42.3 42.6 43.9 45.2 46.5 46.0 47.7 47.6 45.5 44.8 46.1 38.4 37.9 40.1 38.1 37.4 39.2 40.0 39.6 40.1 39.1 40.2 39.9 40.7 40.4 41.8 40.9 41.2 41.5 42.3 42.6 43.6 45.2 46.4 45.9 47.6 47.6 45.5 44.9 46.0 37.3 38.0 38.9 39.1 38.0 37.9 39.2 40.0 39.9 39.5 39.5 39.9 40.4 40.5 41.1 41.5 40.6 41.0 41.8 42.6 43.6 44.8 46.0 45.8 46.8 47.6 46.9 45.2 45.3 41.7 SYSTEM INOPERATIVE 44.3 45.2 46.3 45.9 47.6 47.7 45.5 44.9 44.3 45.3 45.9 45.9 47.5 47.7 45.5 45.0 44.7 45.8 45.7 46.3 47.7 47.4 45.2 44.7 44.8 45.8 45.8 46.4 47.8 47.3 45.2 44.7 44.9 45.9 45.9 46.7 47.8 47.1 45.1 45.0 45.1 46.1 45.9 46.9 47.9 47.0 45.0 45.3 MONTHLY AVERAGE

mm r-.

F?".

rlý"-l - r-T-111 F-4i'll

ý"

Pý-ýlli r~;T m

F1 I9 "1

TABLE 3.2-6 AVERAGE HOURLY TEMPERATURE IN 7F VERMONT YANKEE SAMPLE STATION NO. 7 JUNE 1980 HOUR 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DAILY AVERAGE DAY.

1 2

3 4

5 6

7 8

9.I I

-J I

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 64.6 66.3 65.1 66.1 65.4 64.3 65.0 63.4 63.7 61.9 61.3 60.8 60'.2 61.6 62.6 63.9 63.4 65.5 66.6 69.5 72.6 72.8 72.2 71.8 64.6 66.1 65.0 66.1 65.3 64.1 64.9 63.3 63.4 61.8 61.3 60.6 60.2 61.5 62;4 64.1 63.1 65.4 66.6 69.6 72.0 72.8 72.1 71.7 64.7 66.0 64.9 65.9 65.3 63.9 64.8 63.3 63.4 61.6 61.2 60.6 60.0 61.2 62.1 64.0 63.3 65.3 66.5 69.8 71.8 72.7 72.1 71.4 64.7 65.8 64.9 65.7 65.4 63.7 64.8 63.2 63.1 61.6 61.0 60.6.

60.0 61.3 61.9 64.2 63.4 65.3 66.5 69.6 72.0 72.7 72.1 71.0 64.7 65.7 65.0 65.5 65.4 63.6 64.7 63.2 62.9 61.5 61.1 60.5 60.0 61.2 61.9 64.3 63.3 65.3 66.5 69.3 72.3 72.7 72.1 70.8 64.7 65.6 64.9 65.3 65.3 63.4 64.7 63.2 62.8 61.8 61.0 60.4 60.0 61.2 62.3 64.3 63.2 65.3 66.4 64.8 65.6 65.0 65.2 65.3 63.4 64.7 63.2 62.9 61.6 60.9 60.4 59.9 61.2 62.8 64.3 63.3 65.2 66.4 65.0 65.5 64.9 65.3 65.4 63.4 64.7 63.2 62.8 61.6 61.0 60.5 60.0 61.4 63.0 64.2 63.3 65.2 66.3 65.2 65.6 65.0 65.5 65.5 63.6 64.5 63.2 62.9 61.8 61.1 60.8 60.2 61.4 63.1 64.0 63.4 65.2 66.4 65.5 65.5 65.6 65.6 65.1 65.2 65.7 65.8 65.6 65.8 63.7 63.8 64.6 64.7 63.1 63.2 63.0 63.2 61.9 61.9 61.2 61.3 60.9 60.9 60.4 60.4 61.5 61.5 63.4 63.6 63.5 63.7 63.6 63.7 65.2 65.3 66.4 66.4 65.8 66.1 65s 65.3 65.2 65.5 65.9 65.9 65.9 65.9 63.6 63.8 64.7 64.7 63.3 63.3 63.3 63.3 61.7 61.6 61.3 61.4 61.2 61.5 60.5 60.7 61.4 61.4 64.0 64.2 63.6 63.7 63.9 64.2 65.2 65.1 66.4 66.4 66.3 65.4 65.7 66.0 65.8 63.9

64. 4 63.3 63.3 61.7 61.5 61.6 60.8 61.4 64.2 63.8 64.5 65.3 66.6

[

67.0 65.4 66.1 66.2 65.8 64.1 64.1 63.3 63.3 61.8 61.6 61.1 61.0 61.5 64.0 63.8 64.8 65.6 66.7 69.8 70.8 72.5 72.5 72.2 70.0 67.6 67.6 65.4 65.6 66.4 66.3 66.1 66.2 65.7 65.7 64.2 64.5 64.0 63.9 63.2 63.5 63.2 62.8 61.8 61.7 61.6 61.5 60.9 60.9 61.2 61.5 61.6 61.6 63.8 63.8 63.7 63.8 65.3 65.5 66.0 66.2 66.8 66.9 70.1 70.3 71.3 71.7 72.9 73.3 72.4 72.4 72.2 72.2 70.1 70.5 67.5 65.9 66.3 66.1 65.7 64.8 63.9 63.6 62.6 61.7 61.7 61.1 61.9 62.0 63.9 64.0 65.4 66.6 67.0 70.6 72.0 73.6 72.4 72.1 71.0 67.4 65.9 66.2 66.0 65.6 64.9 63.7 63.5 62.5 61.5 61.8 61.0 61.9 62.1 63.7 64.1 65.1 66.7 66.9 70.3 72.4 73.2 72.4 72.0 70.7 67.2 65.9 66.3 66.0 65.3 65.0 63.6 63.4 62.4 61.6 61.6 60.9 61.8 62.1 63.5 64.3 65.3 66.7 66.8 70.0 72.5 73.4 72.3 72.0 70.3 67.1 65.7 66.3 66.0 65.2 65.0 63.5 63.4 62.2 61.8 61.4 60.7 61.8 62.3 63.9 64.5 65.2 66.7 67.0 69.9 72.6 73.2 72.2 72.0 69.7 66.9 65.4 66.3 65.8 65.0 65.0 63.4 63.6 62.2 61.8 61.3 60.5 61.7 62.8 63.9 64.4 65.5 66.7 67.3 70.0 72.2 73.1 72.2 72.0 70.1 66.7 65.3 66.2 65.6 64.8 65.0 63.4 63.7 62.0 61.7 61.1 60.4 61.9 62.8 63.8 64.2 65.6 66.7 67.3 69.9 72.1 73.1 72.2 71.9 70.3 66.7 65.1 66.2 65.5 64.5 65.1 63.4 63.8 62.0 61.6 60.8 60.3 61.7 62.7 63.8 63.9 65.5 66.7 67.3 69.5 72M1 73.0 72.2 71.9 69.9 66.0 65.6 65.6 65.8 65.4 64.2 64.3 63.4 62.9 61.7 61.3 60.8 60.8 61.7 63.3 64.0 64.3 65.8 66.7 70.6 72.7 72.5 72.1 70.4 SYSTEM INOPERATIVE SYSTEM INOPERATIVE SYSTEM INOPERATIVE SYSTEM INOPERATIVE SYSTEM INOPERATIVE SYSTEM INOPERATIVE 69.3 69.4 69.4 69.2 72.5 72.6 72.5 72.2 72.6 72.6 72.6 72.6 72.1 72.1 72.1 72.1 70.5 69.9 69.8 70.0 69.4 72.5 72.6 72.1 69.3 69.4 72.5 72.8 72.1 69.8 70.2 72.4 72.5 72.1 70.2 70.5 72.4 72.5 72.1 69.9 70.8 72.4 72.5 72.1 70.0 MONTHLY AVERAGE 65.6

TABLE 3.2-7 AVERACE HOURLY TEMPERATURE IR "F VERMONT YANKEE SAMPLE STATION NO. 7 JULY 1980 HOUR DAILY AVERAGE I

c3o I

DAY 1

2 3

4 5

6 7

8 9

10 I1 12 13 14 15 16.

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31.

1 2

3 4"

5 69.5 69.9 71.1 71.1 71.3 73.6 73.0 72.7 72.8 72.3 72.4 73.2 72.9 72.4 73.3 74.5 74.7 74.9 75.1 76.0 76.3 78.7 78.7 79.1 78.9 78.0 77.9 78.5 78.9 77.9 77.8 69.6 69.9 71.1.

71.2 71.4 73.6 72.9 72.6 72.5 72.2 72.5 73.2 73.0 72.5 73.2 74.1 74.6 74.9 75.1 76.0 76.2 78.6 78.6 79.1 78.8 78.1 78.0 78.5 78.8 77.8 77.8 69.8 69.9 69.8 69.7 71.1 71.1 71.2 71.0 71.5 71.3 73.5 73.4 72.8 72.8 72.7 72.7 72.5 72.4 72.3 72.2 72.4 72.4 73.1 73.2 73.2.73.1 72.6 72.6 73.4 73.3 74.1 74.3 74.7 74.8 74.9 74.8 74.9 74.9 76.1 76.3 76.4 76.4 78.5 78.5 78.6 78.6 79.0 78.9 78.8 78.7 78.1 78.1 78.0 78.0 78.5 78.7 78.7 78.6 77.8 77.8 77.7 77.6 69.9 69.8 71.0 71.0 71.1 73.3 72.7 72.8 72.4 72.3 72.4 73.3 73.0 72.7 73.3 74.6 74.6 74.8

.75.0 76.4 76.3 78.4 78.5 78.9 78.6 78.2 78.0 78.8 78.6 77.8 77.6 69.9 69.9 71.0 71.0 71.0 73.2 72.6 72.7 72.4 72.3 72.5 73.3 72.9 72.8 73.4 74.7 74.5 74.9 74.9 76.4 76.5 78.3 78.6 78.8 78.6 78.2 78.0 78.8 78.6 77.7 77.5 70.0 70.2 70.0 70.1 71.1 71.1 71.0 71.0 71.1 71.1 73.1 73.0 72.6 72.7 72.7 72.7 72.3 72.3 72.1 72.2 72.4 72.3 73.3. 73.2 72.9 72.9 72.8 72.7 73.4 73.4 74.6 74.6 74.5 74.6 74.8 74.7 74.9 75.0 76.4 76.4 76.5 76.4 78.3 78.3 78.5 78.5 78.8 78.8 78.5 78.4 78.3 78.3 78.0 78.0 78.7 78.7 78.5 78.5 77.6 77.6 77.4 77.4 70.1 70.1 71.1 71.0 71.1 72.9 72.7 72.6 72.4 72.2 72.4 73.3 72.9 72.8 73.3 74.8 74.5 74.7 75.0 76.5 76.3 78.2 78.5 78.8 78.5 78.4 77.9 78.7 78.5 77.6 77.4 70.0 70.1 71.2 71.0 71.2 72.9 72.7 72.6 72.4 72.3 72.6 73.2 72.8 72.6 73.2 75.0 74.4 74.7 75.1 76.4 76.3 78.2 78.5 78.8 78.5 78.3 77.9 78.9 78.5 77.6 77.4 70.0. 70.1 70.1 70.1 71.3 71.3 71.0 71.1 71.1 71.6 72.9 73.0 72.7 72.7 72.7 72.7 72.4 *72.4 72.2 72.0 72.7 72.7 73.1 73.1 72.8 72.7 72.6 72.7 73.1 73.5.

75.0 75.0 74.7 75.0 74.6 74.7 75.2 75.3 76.3 76.2 76.4 76.5 78.2 78.2 78.5 78.6 78.9 78.9 78.5 78.2 78.3 78.4 77.9 78.0 79.0 78.9 78.5 78.4 77.6 77.6 77.4 77.4 70.1 70.5 71.3 71.3 71.9 73.1

.72.7 72.6 72.4 72.1 72.7 73.1 72.7 72.8 74.0 74.8 75.0 75.0 75.4 76.3 76.5 78.3 78.6 78.8 78.0 78.4 78.0 78.8 78.4 77.5 77.3 70.0 70.6 71.2 71.4 72.2 73.1 73.1 72.8 72.3 72.0 72.7 73.2 72.7 72.9 74.0 74.8 75.4 75a 75.4 76.3 76.8 78.4 78.5 78.6 78.1 78.3 78.1 78.8 78.5 77.7 77.3 70.0 70.6 71.1 71.6 72.1 73.2 72.9 72.9 72.3 72.0 72.7 73.1 72.7 73.3 74.1 74.8 75.6 75.1 75.3 76.4 77.0 78.3 78.4 78.6 78.2 78.2 78.2 78.8 78.7 77.7 77.5 70.0 70.7 71.1 71.3 72.2 73.4 72.8 73.0 72.2 72.1 72.9 72.9 72.7 73.4 74.1 74.8 75.7 75.0 75.2 76.3 77.1 78.2 78.5 78.6 78.2 78.2 78.3 78.8 78.8 78.1 77.7 70.1 70.8 71.2 71.1 72.3 73.4 72.7 7.2.8 72.7 72.3 73.1 72.9 72.8 73.6 74.2 75.0 75.6.

75.2 75.2 76.4 77.3 78.3 78.8

.78.6 78.1 78.1 78.3 79.1 78.8 78.3 77.9 70.1 70.8 71.3 71.1 72.3 73.4 72.6 72.8 72.9 72.5 73.2 72.8 72.9 73.6 74.5 75.2 75.3 75.1 75.3 76.4 78.1 78.5 78.9 78.8 78.1 78.0 78.3 79.5 78.7 78.3 78.1 70.0 71.0 71.2 71.2 72.8 73.4 72.7 72.9 73.1 72.7 73.4 72.6 73.0 73,5 74.7 74.9 75.0 75.0 75.4 76.3 78.4 78.6 78.9 78.9 78.1 78,1 78.3 79.6 78.5 78.1 78.0 70.1 70.0 71.2 71.2 71.2 71.2 71.1 71.2 73.2 73.2 73.2 73.2 72.7 72.6 72.9 72.8 73.0 72.9 72.7 72.6 73.2 73.2 72.7 72.9 73.0 73.3 73.5 73.5 75.0 74.9 74.7 74.7 75.0 74.9 74.9 75.0 75.5 75.6 76.3 76.5 78.5 78.6 78.7 78.7 78.8 78.7 79.0 79.1 78.0 78.0 78.0 77.9 78.3 78.3 79.5 79.2 78.4 78.3 78.1 78.1 78.0 78.0 69.9 71.2 71.1 71.3 73.9 73.1 72.6 72.8 72.5 72.3.

73.1 73.0 73.2 73.5 74.4 74.7 74.8 75.0 75.7 76.4 78.8 78.6 78.6 79.0 78.0

.77.9 78.3 79.1 78.2 78.0 78.0 70.0 70.0 71.2 71.2 71.1 71.1 71.2 71.1 73.9 73.7 73.0 72.9 72.6 72.6 72.7 72.7 72.3 72.2 72.4 72.5 73.2 73.4 73.1 73.0 72.7 72.4 73.4 73.3 74.4 74.4 74.6 74.6 74.8 74.8 74.9 74.9 75.6 75.8 76.3 76.4 78.8 78.7 78.7 78.7 78.6 78.7 79.0 78.9 78.0 78.0 77.9 77.9 78.4 78.4 79.1 79.0 78.1 78.0 78.0 77.9 77.9 77.9 70.0 70.4 71.2 71.1 72.0 73.2.

72.7 72.7 72.5 72.3 72.8 73.1 72.9 73.0 73.9 74.7 74.9 74.9 75.2 76.3 77.1 78.4 78.6 78.9 78.3 78.2 78.1 78.9 78.5 77.8 77.7 74.9 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 MONTHLY AVERAGE

F171. f7l, r

r, 7

F-',;

TABLE 3.2-8 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 7 AUGUST 1980 HOUR DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14.

15 16 17 18 19 20 21 22 23 24 I

I I

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 77.8 77.7 77.6 77.6 77.6 77.5 78.0 78.0 77.9 77.7 77.9 77.8 78.3 78.3 78.0 78.0 77.8 77.8 78.6 78.5 78.0 77.9 77.3 77.3 76.2 76.2

'76.1 76.1 74.9 75.1 75.1 75.1 73.9 73.9 73.2 73.3 73.2 73.1 73.2 73.2 72.1 72.0 70.9 70.8 71.0 71.0 70.7 70.7 70.6 70.6 70.8 70.8 72.0 72.0 72.2 72.1 72.2 72.3 72.4 72.4 72.1 72.2 77.7 77.6 77.4 78.0 77.7 77.7 78.2 78.0 77.8 78.5 77.7 77.2 76.2 76.0 75.0 75.0 73.9 73.3 73.1 73.3 71.9 70.9 71.0 70.8 70.6 70.6 72.0 72.2 72.3 72.3 72.2 77.6 77.5 77.4 77.9 77.7 77.7 78.2 78.0 77.7 78.4 77.9 77.0 76.2 75.9 75.0 75.0 73.8 73.5 73.1 73.1 71.9 70.8 70.9 70.7 70.6 70.7 72.0 72.3 72.4 72.3 72.2 77.5 77.4 77.4 77.8 77.8 77.7 78.2.

78.0 77.8 78.4 78.0 77.0 76.1 75.8 74.9 75.0 73.7 73.5 73.1 73.1 71.8 70.8 70.9 70.7 70.6 70.7 71.9 72.2 72.3 72.3 72.1 77.4 77.3 77.3 77.3 77.3 77.3 77.8 77.8 77.7 77.5 77.7 77.7 78.1.78,1 77.7 77.6 77.8 77.8 78.3 78.2 78.3 78.2 77.0 76.9 76.1 76.0 75.7 75.7 75.0 75.0 74.9 74.8 73.7 73.7 73.5 73.5 73.0 73.3 73.0 73.0 71.8 71.7 70.8 70.8 70.9 70.8

.70.8 70,7 70.7 70.8 70.8 70.7 71.9 71.9 72.3 72.2 72.3 72.2 72.3 72.3 72.2 72.3 77.3 77.3 77.3 77.3 77.3 77.3 77.7 77.6 77.5 77.4 77.6 77.5 78.1 78,0 77.7 77.7 77.9 77.5 78.2 78,3 78.0 78.0 76.8 76.7 76.0 76.0 75.7 75.7 75.0 75.0 74.9 74.9 73.6 73.7 73.5 73.4 73.2 73.1 73.0 72.9 71.6 71.7 70.7 70.8 70.7 70.8 70.7 70.8 71.1 71.1 70.7 70.8 71.9 71.9 72.2 72.3 72.2 72.3 72.2 72.2 72.3 72.3 77.3 77.3 77.4 77.7 77.3 77.5 78.0 77.8 77.6 78.3 78.0 76.6 76.0 75.7 75.0 74.8 73.7 73.4 73.2 72.9 71.7 70.8 70.9 71.0 71.1 70.8 71.9 72.3 72.3 72.3 72.3 77.2 77.2 77.3 77.2.

77.4 77.5 77.6.77.5 77.3 77.3 77.5 77.6 78.0 78.0 77.8 77.8 78.0 78.1 78.2 78.3 78.0 77.5 76.5 76.4 75.8 75.8 75.6 75.3 75.0 75.0 74.9 74.9' 73.6 73.6 73.5 73.6 73.4 73.4 73.0 73.1 71.7 71.7 70.9 70.9 70.9 70.8 70.8 70.8 70.9 70.8 71.0 71.1 71.9 71.9 72.2 72.3 72.3 72.4 72.3 72.3 72.4 72.4 77.1 77.1 77.6 77.4 77.2 77.7 77.9 77.8 78.3 78.3 77.5 76.4 75.9 75.1 74.9 74.8 73.6 73.5 73.3 73.1 71.6 71.0 70.9 70.7 70.9 71.2 72.0 72.4 72.5 72.6 72.4 76.9 77.2 77.7 77.5 77.3 77.8 77.8 77.8 78.2 78.3 77.2 76.3 76.0 74.9 74.8 74.8 73.5 73.5 73.1 72.9 71.3 71.1 70,9 70.7 70.8 71.2 72,0 72.4 72.5 72.3 72.6 77.2 77.4 77.3 77.7 77.7.

77.7 77.6 77.8 77.5 77.8 77.9 77.9 78.0 78.1 77.8 77.7.

78.3 78.0 78.3 78.3 77.0 76.8 76.3 76.3 76.0 76.0 74.9 75.1 74.7 74.8 74.8 74.7 73.1 73.4 73.4 73.3 72.9 72.8 72.7 72.5 71.1 71.0 71.0 70.9 70.9 70.7 70.6 70.5 70.8 70.9 71.2 71.4 72.1 72.1 72.4 72.3 72.4 72.4 72.3 72.2 72.5 72.5 77.6 78.0 77.7 78.1 77.9 78.2 78.3 77.8 78.0 78.2 76.9.

76.4 76.1 75.1 74.9 74.7 73,4 73.3 72.9 72.4 71.0 70.9 70.7 70.5 70.8 71.6 72.2 72.3 72.4 72.1 72.5 77.7 78.2 77.7 78.3 78.1 78.3 78.5 78.0 78.2 78.0 77.2 76.4 76.2 75.2 74.9 74.6 73.4 73.3 73.0 72.4 71.1 70.8 70.7 70.7 70.7 71.9 72.2 72.3 72.4 72.1 72.7 77.9 78.3 77.7 78.1 78.3 78.4 78.5 78.2 78.8 78.1 77.3 76.4 76.3 75.2 75.0 74.5 73.3 73.2 73.0 72.3 71.1 70.9 70.7 70.6 70.7 72.0 72.2 72.3 72.4 72.0 72.6 77.9 78.3 77.7 78.1 78.3 78.5 78.3 78.2 78.8 78.0 77.4 76.5 76.2 75.2 74.8 74.3 73.3 73.3 73.1 72.3 71.1 70.9 70.7 70.5 70.6 72.2 72.2 72.3 72.4 72.0 72.6 77.8 78.2 77.9 78.2 78.2 78.5 78.4 78.1 78.9 78.1 77.4 76.4 76.2 75.1 74.7 74.3 73.4 73.1 73.1 71.9 71.0 71.0 70.7 70.7 70.7 72.2 72.2 72.3 72.4 72.0 72.5 77.8 77.8 78.1 77.9 78.0 78.1 78.0 77.9 78.2 78.1 78.4 78.3 78.2 78.2 77.7 77.8 78.8 78.7 78.1 78.1 77.4 77.4 76.4 76.3 76.2 76.2 75.2 75.1 74.7 74.9 74.2 74.2 73.3 73.2 73.3 73.2 73.1 72.9 72.1 72.1 71.0 70.9 70.8 70.7 70.7 70.8 70.8 70.7 70.8 70.7 72.2 72.2 72.2 72.2 72.3 72.3 72.4 72.4 72.0 72.0 72.5 72.4 77.7 77.8 78.0 77.8 78.0 78.3 78.0 77.7 78.7 78.0 77.4 76.2 76.2 75.1 75.1 74.1 73.2 73.2 73.1 72.0 70.9 71.0 70.8 70.7 70.7 72.1 72.2 72.2 72.4 72.0 72.5 DAILY AVERAGE 77.5 77.6 77.6 77.8 77.7 77.9 78.2 77.9 78.1 78.2 77.6 76.6 76.1

.75.4 74.9 74.7 73.5 73.4 73.1 72.7 71.4 70.9 70.8 70.7 70.8 71.3 72.0 72.3 72.4 72.2 72.4 MONTHLY AVERAGE 74.6

TABLE 3..2-9 AVERAGE HOURLY TEMPERATURE IN 'F VERMONT YANKEE SAMPLE STATION NO. 7 SEPTEMBER 1980 HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DAILY AVERAGE I

DAY I

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 72.6 72.5 74.4 75.5 75.4 74.4 73.9 74.1 73.8.

72.4 71.6 71.2 70.8 69.9 69.7 68.7 67.9 67.1 65.6 65.3 65.1 64.7.

66.1 66.9 65.9 64.8 63.5 61.8 61.0 60.5 72.6 72.4 74.4 75.5 75.4 74.4 73.9 74.0 73.8 72.4 71.6 71.3 70.8 69.8 69.8 68.7 67.8 67.1.

65.4 65.3 65.1 64.7 66.1 66.8 65.9 64.9 63.4 61.8 60.9 60.5 72.6 72.6

.74.3 75.4 75.4, 74.3 73.9 74.0 73.6 72.4 71.5 71.3 70.8 69.9 69.8 68.6 67.8 67.1 65.4 65.2 65.1 64.7

-66.1.

66.8

.65.9 65.1 63.3 61.7 60.7 60.4 72.5 72.9 74.2 75.3 75.4 74.3 73.9 74.0 73.6 72.5 71.4 71.3 70.8 69.9 69.7 68.5 67.8.

67.0 65.3 65.2

65. 1 64.8 66.1 66.6

-65.8-

-65.3 63.3 61.7 60.7 60.3 72.6 72.7-74.1 75.3 75.3 74.2 73.9 74.0 73.5 72.6 71.4 71.4 70.9 69.9 69.6 68.5 67.8 67.0 65.3 65.2 65.1 64.9 66.2 66.5 65.8 65 4 63.2 61.6

.60.7 60.3 72.6 72.5 74.1 75.4 75.2 74.1 74.0 73.9 73.5 72.5 71.4 71.3 70.8 69.8 69.5 68.5 67.8 67.0 65.1 65.2 65.1 64.7 66.2 66.4 65.7 65.6 63.1 61.7 60.5 60.2 72.5 72.4 74.0 75.4 75.2 74.1 74.2 73.8

" 73.4 72.4 71.3 71.2 70.7 69.8 69.5 68.4 67.7 66.9 65.1 65.1 65.1 64.8 66.2 66.4 65.7 65.7 63.0 61.5 60.5 60.2 72.6 72.6 74.0 75.5 75.1 74.1 74.1 73.8 73.4 72.4 71.3 71.1 70.7 69.8

69. 5 68.4 67.7 66.9 65.1 65.1 65.0 64.8 66.2 66.3 65.6 65.7 63.0 61.5 60.4 60.1 72.6 72.6 74.1 75.4 75.1 74.1 74.0 73.8 73.4 72.4 71.3 71.1 70.6 69.8 69.5 68.4 67.8 66.8 65.1 65.1 65.0 64.9 66.3 66.3 65.7 65.7 62.8 61.6 60.4 60.1 72.6 72.8 74.1 75.5 75.0 74.2 74.0 73.8 73.4 72.5 71.4 71.2 70.6 69.7 69.5 68.5 67.8 66.7 65.2 65.1 65.0 64.9 66.4 66.2 65.7 65.7 62.6 61.6 60.5 60.2 72.6"72.7 72.6 73.0 72.9 73.0 74.1 74.1 73.9 75.5 75.5 75.4 74.9 74.8 74.7 74.2 74.2 74.2 73.9 73.9 73.9 73.8,73.8 74.0 73.5 73.5 73.3 72.5 72.8 72.6 71.5 71.6 71.4 71.2 71.1 71.1 70.6.70.6 70.6 69.7 69.7' 69.7 69.6 69.4 69.1 68.6 68.4 68.0 67.8 67.8 67.5 66.6 66.6 66.6 65.3 65.3 65.1 65.1 65.0 65.0 64.9 64.9 64.9 65.0 65.0 65.1 66.5 66.5 66.6 65.9 65.7 65.6 65.7 65.5 65.3 65.6 65.5 65.5 62.4 62.4 62.4 61.5 61.6 61.5 60.4 60.3 59.9 60.3 60.5 60.4 72.6 73.3 74.0 75.5 74.7 74.2 73.8 73.9 72.9 72.5 71.4 71.1 70.6 69.8 69.1 67.8 67.3 66.5 65.2 64.9 64.9 65.4-66.6 65.8 65.3 65.3 62.4 61.4 60.0 60.4 72.5 73.5.

74.3.

75. 6 74.8 74.1 73.8 74.2 72.7 72.2 71.2 71.2 70.6 69.7 69.1 67.9 67.2 66.6 65.3 64.8 64.8 65.8 66.7 66.0 65.3 65.2 62.4 61.4 60.2 60.6 72.6.

73.9 74.5 75,7 74.8 74.1 73.8 74.4 72.5 72.2 71.2 71.1 70.5 69.7 69.0 68.1 67.1 66.6 65.4 64.8 64.7 66.2 66.9 66.3 65.4 65.1 62.3 61.3 60.6 60.7 72.7 72.5 74.2 74.5 74.9 75.4 75.8 76.0 74.9.74.9 74.1 74.0 74.0 74.0.

74.4 74.4 72.4 72.3 72.3 72.1 71.2 71.2 70.9 70.9 70.2 70.1 69.8 69.8 69.1 69.0 68.2 68.2 67.1 67.2 66.6 66.7 65.5 65.4 64.8 64.9 64.7 64.6 66.5 66.5 67.1 67.2 66.5 66.5 65.4 65.3 64.9 64.8 62.3 62.3 61.3 61.3 60.9 61.2 60.8 60.9 72.5 74.6 75.5 76.0 74.8 74.0 74.3 74.3 72.4 72.1 71.1 70.9 69.9 69.8 68.9 68.1 67.2 66.6 65.4 65.0 64.6 66.5 67.1 66.5 65.3 64.5 62.2 61.3 61.1 61.0 72.6 72.6 74.6 74.5 75.5 75.5 75.9 75.9 74.8 74.6 73.9 73.9 74.2 74.5 74.2 74.1 72.4 72.4 72.0 72.0 71.1 71.2 70.8 70.9 69.9 69.9 69.7 69.7 68.9 68.9 68.1 68.1 67.2 67.2 66.5 66.2 65.5 65.4 65.0 65.0 64.6 64.6 66.3 66.1 67.1 66.7 66.3 66.2 65.1 65.0 64.2 63.9 62.1 61.9 61.4 61.4 61.0 61.0 61.2 61.3 72.6 74.6 75.5 75.8 74.5 73.9 74.4 74.1 72.4 71.8 71.2 70.9 69.8 69.7 68.8 68.0 67.2 66.0 65.4 65.0 64.8 66.0 66.8 66.0 64.9 63.8 61.8 61.3 60.9 61.3 72.8.

74.5 75.5 75.6 74.5 73.9 74.3 74.0 72.5 71.8 71.2 70.8 69.8 69.7 68.7 68.0 67.1 65.9 65.3 65.1 64.8 66.1 66.8 66.0 64.8 63.7 61.5 61.3 60.8 61.3 72.7 74.5 75.5 75.6 74.4 73.9 74.3 73.9 72.4 71.7 71.2 70.8 69.9 69.8 68.7 67.9

.67.1 65.7 65.3 65.1 64.7 66.1-66.9 65.9 64.7 63.5 61.9 61.1 60.6 61.2 72.6 73.4 74.6 75.6 74.9 74.1 74.0 74.0 73.0 72,3 71.3 71.1 70.4 69.8 69.3 68.3 67.5 66.6 65.3 65.1 64.9 65.4 66.6 66.3 65.4 65.0 62.6 61.5 60.6 60.6 68.7 MONTHLY AVERAGE

TABLE 3.2-10 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 7 OCTOBER 1980 DAILY DAY HOUR AVERAGE 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

.23 24 I

IH 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 61.2 61.2 60.8 60.8 60.5 60.5 60.1 59.9 60.2 60.2 60.3 60.4 59.7 59.7 58.6 58.5 58.3 58.3 57.6 57.7 57.0 57.0 56.1 56.1 55.6 55.4 54.2 54.1 53.5 53.5 52.8 52.7 52.9 52.9 53.0 53.0 53.0 53.0 53.3 53.2 52.8 52.7 52.1 52.1 50.9 50.9 49.7 49.7 48.3 48.3 48.2 48.1 47.6 47.5 46.6 46.6 45.6 45.5 44.7 44.6 44.1 44.0 61.0 60.7 60.4 59.9 60.1 60,4 59.5 58.5 58.3 57.6 57.0 56.0 55.3 54.0 53.4 52.7 52.9 53.0 52.9 53.2 52.7 52.0 50.9 49.4 48.3 48.0 47.5 46.5 45.5 44.4 43.9 61.0 61.0 60.7 60.6 60.4 60.4 59.8 59.7 60.1 60.1 60.4 60.3 59.4 59.3 58.4 58.4 58.2 58.2 57.5 57.5 57,0 57.0 56.0 56.0

.55.2 55.1 54.0 53.9 53.3 53.3 52.6 52.5 52.9 52.9 53.0 53.0 52.9 52.9 53.1 53.0 52.6 52.6 51.9 51.9 50.8 50.7 49.4 49.5 48.3 48.3 47.9 47.8 47.5 47.3 46.5 46.4 45.4. 45.3 44.3 44.2 43.9 43.8 60.9 60.9 60.6 60.6 60.4 60.3 59.7 59.7 60.1. 60.1 60.3 60.3 59.2 59.2 58.3 58.3 58.1 58.1 57.5 57.4 57.0 57.0 56.0 56.0 54.9 54.8 53.8 53.7 53.2 53.2 52.5 52.5 52.9 52.9 53.0 53.0 52.9 52.9 53.0 53.0 52.6 52.6 51.8 51.8

.50.7 50.7 49.5 49.5" 48.2 48.1 47.8 47.7 47.3" 47.4 46.3 46.3 45.3 45.3 44.1 44.0 43.7 43.7 60.9 60.5 60.3 59.7 60.0 60.3 59.2.

58.2 58.0 57.3 57.0 56.0 54.7 53.7 53.1 52.4 52.9 53.0 52.8 52.9 52.5 51.7 50.6 49.5 48.0 47.7 47.3 46.2 45.3 43.8 43.7 60.9 60.6 60.3 59.7 60.0 60.2 59.2 58.1 58.0 57.4 57.0 56.0 54.7 53.7 53.0 52.4 52.9 53.0 52.8 53.0 52.6 51.8 50.6 49.3 47.9 47.6 47.3 46.1 45.4 43.7 43.7 60.9 60.6 60.3 59.7 60.0 60.1 59.1 58.0 57.9 57.5 57.0 56.0 54.6 53.6 53.0 52.4 52.9 53.1 52.8 53.1 52.6 51.8 50.7 49.4 47.8 47.6 47.2 46.1 45.4 43.8 43.8 60.8 60.5 60.4 59.6 60.1 60.1 59.0 57.8 57.8 57.5 57.0 56.0 54.5 53.6 53.0 52.3 52.9 53.1 52.8 53.3 52.6 51.8 50.7 49.5 47.7 47.6 47.2 46.0 45.4 43.9 44-.1 60.8 60.6 60.4 60.3 60.3 60.1 59.7 59.7 60.2 60.3 60.1 60.2 58.9 58.9 57.8 57.9 57.8 57.8 57.5 57.5 57.0 56.9 56.0 56.1 54.5 54.5 53.6 53.6 52.9 53.0 52.2 52.3 52.8 52.8 53.2 53.4 52.8 52.8 53.3 53.3 52.6 52.6 51.8 51.8 50.8 50.9 49.7 49.6 47.6 47.6 47.7 47.7 47.3 47.4 45.9 45.8 45.4 45.3 44.0 44.1 44.4 44.6 60.5 60.4 60.1 59.8 60.4 60.1 59.0 58.0 57.9 57.6 56.8 56.2 54.5 53.6 53.0 52.6 52.7 53.5 53.3 53.4 52.6 52.0 50.9 49.3 47.6 47.8 46.9 45.7 45.4 44.2 44.7 60.5 60.5 60.1 59.9 60.6 60.1 58.9 58.1 57.9 57.7 56.8 56.2 54.4 53.7 53.1 52.7 52.6 53.4 53.3 53.5 52.7 52.1 50.8 49.3 47.5 47.8 46.9 45.4 45.4 44.3 44.8 60.7 60.6 60.1 60.0 60.8 60.2 58.9 58.1 57.9 57.7 56.7 56.2 54.4 53.9 53.2 52.7 52.5 53.4 53.2 53.4 52.7 51.9 50.9 49.3 47.5 47.7 47.1 45.5 45.5 44.4 45.0 60.9 60.8 60.3 60.1 60.9 60.3 58.9 58.2 57.9 57.7 56.6 56.2 54.4 54.0 53.2 52.6 52.6 53.4 53.4 53.3 52.7 51.9 51.0 49.3 47.5 47.7 47.2 45.6 45.5 44.4 45.1 61.1 60.8 60.4 60.2 60.9 60.3 58.8 58.1 57.9 57.6 56.4 56.2 54.4 53.9 53.2 52.6 52.7 53.3 53.3 53.2 52.6 51.8 50.8 49.1 47.6 47.7 47.2 45.7 45.4 44.4 45.1 61.2 60.8 60.4 60.4 60.9 60.2 58.7 58.2i 57.9 57.5 56.5 56.1 54.3 53.9 53.0 52.6 52.8 53.3 53.3 53.1 52.5 51.7 50.7 49.0 47.7 47.7 47.1 45.7 45.4 44.4 45.0 61.3 60.8 60.4 60.5 60.9 60.0 58.6 58.2 57.6 57.4 56.4 56.0 54.4 53.9 52.9 52.7 52.8 53.2 53.3 53.0 52.4 51.6 50.6 48.9 47.9 47.7 47.0 45.7 45.3 44.3 44.9 61.3 61.2 60.7 60.6 60.3 60.3 60.5 60.5 60.8 60.6 59.9 59.9 58.6 58.6 58.2 58.3 57.5 57.5 57.2 57.1 56.4 56.3 56.0 55.9 54.4 54.3 53.9 53.8 52.9 52.9 52.7 52.8 52.9 53.0 53.2 53.1 53.3 53.3 52.9 52.9 52.3 52.3 51.4 51.3 50.4 50.1 48.7 48.5 48.0 48.1 47.7 47.7 46.9 46.8 45.7 45.7 45.2 45.1 44.3. 44.3 44.9 44.8 61.0 60.5 60.2 60.5 60.4 59.8 58.6 58.4-57.5 57.0 56.3 55.8 54.3 53.7 52.9 52.9 53.0 53.1 53.3 52.8 52.2 51.2 50.0 48.4 48.2 47.7 46.7 45.7 45.0 44.2 44.8 60.9 60.5 60.2 60.4 60.2 59.8 58.6 58.3 57.5 57.0 56.1 55.6 54.3 53.5 52.9 52.9 53.0 53.0 53.3 52.8 52.2 51.0 49.8 48.3 48.2 47.7 46.7 45.7 44.9 44.2 44.7 60.9 60.6 60.3 60.0 60.4 60.2 59.0 58.2 57.9 57.5 56.8 56.0 54.7 53.8 53.1 52.6 52.8 53.2 53.1 53.1 52.6 51.8 50.7 49.2 47.9 47.8 47.2 46.0 45.3 44.2 44.4 MONTHLY AVERAGE 53.6

TABLE 3.2-11 AVERAGE HOURLY TEMPERATURE IN *F VERMONT YANKEE SAMPLE STATION NO. 7 NOVEMBER 1980 HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 i:

DAY I

$Pb I

2 3

4 5

6 7

8 9

10.

11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29' 30 44.6 44.3 43.7 42.7 42.7 43.2 42.6

42. 7 43.7 42.9 42.0 40.6 39.0 39.7 39.7 39.3 38.7 38.0 36.5 35.5 35.7 35.1 35.0 34.9 35.7 36.5 35.3 34.9 35.3 35.6 44.6 44.3 43.6 42.7 42.7 43.1 42.6 42.7 43.7 42.9 41.9 40.4 39.0 39,7 39.7 39.2 38.7 37.8 36.4 35.5 35.7 35.1 35.0 34.9 35.8

• 36.4 35.2 34.9 35.3 35.6 44.5 44.2 43.5 42.7 42.7 43.0 42.4 42.7 43.7 42.9 41.9 40.3 39.0 39.7 39.7 39.3 38.6 37.7 36.5 35.6 35.7 35.1 35.0 34.9 35.9 36.4 35.1 34.9 35.3 35.5 44.6 44.2 43.5 42.7 42.7 43.0 42.4 42.7 43.6 42.9 41.8 40.3 39.0 39.7 39.7 39.3 38.5 37.7 36.5 35.6 35.7 35.0 35.0 34.9 36.0 36.4 35.0 34.9 35.3 35.5 44.5 44.1 43.4 42.6 42.6 42.9 42.4 42.7 43.6 42.8 41.8 40.2 39.0 39.7 39.6 39.2 38.4 37.6 36.5 35.6 35.7 35.0 35.0 35.0 36.0 36.3 34.9 j4.9 35.3 35.5 44.5 44.1 43.3.

42.6 42.6 42.9 42.4 42.7 43.6 42.7 41.8 40.2 39; 0 39.7 39.5 39.1 38.3 37.4 36;4 35.6 35.7 35.0 35.0 35.0 36.0 36.2 35.0 34.9 35.3 35.4 44.4 44.0 43.2 42.6 42.6 42.8 42.4 42.7 43.5 42.7 41.7 4o0.2 39.0 39.7 39.4 39.0 38.3 37.4 36.4 35.6 35.7 35.0 34.9 35.0 35.9 36.0 34.9 35.0

35. 2 35.4 44.5 44.5 44.0 44.1 43.2. 43.0 42.6 42.6 42.6 42.6 42.8 42.7 42.4 42.4 42.8 42.8 43.5 43.5 42.7 42.6 41.7 41.7 40.1 40.0 39.0.39.0 39.7 39.7 39.4 39.4 39.0 39.0 38.3 38.3 37.4 37.4 36.2 36.0 35.6 35.6 35.6 35.5 35.0 35.0 34.9 34.9 35.0 35.0 35.9 35.9 35.9 35.8 34.9 34.9 35.0 35.0 35.3 35.3 35.4.35.3 44.5 44.6"44.6 44.1 44.1 44.2 43.1 43.0 43.0 42.7 42.8 42.9 42.7 42.8 42.9 42.8 42.9 42.9 42.5.42.6 42.7 42.9 42.9 43.0 43.5 43.4 43.3 42.6 42.6 42.5 41.6 41.5 41.5 40.0 40.0 39.8 39.0 39.0 39.0 39.7 39.7 39.7 39.5 39.5 39.5 39.1 39.2 39.2 38.2 38.3 38.4 37.4 37.4 37.3 36.1 36.2 36.2 35.6 35.7 35.9 35.4 35.3 35.3 35.0 35.0 35.1 34.9 34.9 34.9 35.0 35.1 35.2 36.0 36.0 36.1 35.8 35.8 35.8 34.9 35.0 35.0 35.0 35.0 35.0 35.3 35.3 35.3 35.3 35.3 35.3 44.7 44.3 43.1 42.9 43.0 42.9 42.8 43.2 43.3 42.5 41.5 39.7 39.1 39.7 39.6 39.3 38.4 37.2 36.3 36.0 35;3 35.3 34.9 35.2 36.2 35.8 35.0 35.1 35.3 35.3 44.7 44.3 43.2 42.9 43.1 42.8 42.9 43.3 43.2 42.5 41.5 39.6 39.2 39.7 39.6 39A4 38.3 37.2 36.5 36".1 35.3 35.4 34.9 35.3 36.3 35.8 35.0 35.2 35.4 35.3 44.7 44.3 43.3 42.8 43.2 42.9 43.0 43.5 43.2 42.5 41.4 39.6 39.3 39.7 39.5 39.4 38.3 37.1 36.5 36.2 35.2 35.4 34.9 35.3 36.3 35.7 35.0.

35.2 35.4 35.3 44.7 -44.7 44.4 44.3 43.3 43.2 42.6 42.5 43.3 43.4 43.0 43.0 42.9 42.8 43.6 43.6 43.0 42.9 42.4 42.3 41.3 4i.3 39.5 39.4 39.3 39.4 39.7 39.7 39.5 39.5 39.4 39.3 38.4 38.3 37.0 36.9 36.5 36.5 36.2 36.2 35.2 35.1 35.4 35.3 34.9 34.9 35.4 35.5 36.4 36.5 35.7 35.7 35.0 35.0 35.1 35.2 35.4 35.4 35.3 35.3 44.6 44.2 43.2 42.5 43.4 43.0 42.8 43.5 43.0

42. 2 41.2 39.3 39.5 39.7 39.5 39.4 38.3 36.9 36.4 36.1 35.0 35.3 34.9 35.5 36.5 35.6 35.0 35.2 35.4 35.3 44.6

44. 1 43.2 42.6 43.4 43.0 42.8 43.5 43.0 42.2 41.2 39.3 39.5 39.7 39.5 39.4 38.2 37.0 36.3 36.0 35.0 35.3 34.9 35.6 36.5 35.6 35.0 35.2 35.4 35.3 44.6 44.0 43.1 42.6 43.4 42.9 42.8 43.5 43.0 42.2 41.1 39.3 39.5 39.7 39.4 39.3 38.4 37.0 36.3 36.0 35.0 35.2 34.9 35.7 36.5 35.5 35.0 35.2 35.4 35.4 44.5 43.9 43.0 42.7 43.3 42.8 42.8 43.6 43.0

.42.2 41.0 39.2 39.5 39.7 39.3 39.1 35.4 37.0 36.2 36.0 35.0 35.1 34.9 35.7 36.5

• 35.5 34.9 35.2 35.5 35.5 44.5 43.8 42.9 42.7 43.3 42.7 42.8 43.6 43.0 42.1 41.0 39.2 39.5 39.7 39.3 38.9 38.4 36.9 36.0 35.9 35.0 35.0 34.9 35.7 36.6 35.4 34.9 35.2 35.5 35.5 44.4 43.8 42.8 42.7 43.3 42.7 42.8 43.7 43.0 42.0 40.9 39.1 39.6 39.7 39.3 38.9 38.3 36.8 35.8 35.8 35.0 35.0 34.9 35.7 36.6 35.4 34.9 35.2 35.6 35.5 44.4 43.8 42.7 42.7 43.2 42.6 42.7 43.7 43.0 42.0 40.7 39.1 39.7 39.6 39.2 38.8 38.1 36.6 35.6 35.7 35.0 35.0 34.9 35.7 36.5 35.3 34.9 35.3 35.6 35.5 DAILY AVERAGE 44.6 44.1 43.2 42.7 43.0 42.9 42.7 43.2 43.3 42.5 41.5 39.8 39.2 39.7 39.5 39.2 38.4 37.3 36.3 35.8 35.3 35.1 34.9 35.3 36.2 35.8 35.0 35.1 35.4 35.4 39.1 MONTHLY AVERAGE

PI.r Fk,-

M.'l r(

r~ti r-

• -l TABLE 3.2-12 AVERAGE HOURLY TEMPERATURE IN *7 VERMONT YANKME SAMPLE STATION NO. 7 DECEMBER 1980 DAILY AVERAGE

,I DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 35.5 35.5 35.5 35.7.35.7 35.7 35.9 35.9 36.0 35.4 35.3 35.2 33.1 32.9 32.8 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32,0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.7 36.0 35.0 32.8 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.7 36.0 34.8 32.7 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.'7 36.0 34.7 32.5 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.7 36.0 34.5 32.5 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.7 36.1 34.4 32.4 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.7 36.2 34.3 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.5 35.6 35.7 35.8 36.2 36.3 34.3 34.3 32.3 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 320 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0" 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.6 35.8 36.3 34.2 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0

.35.7 35.9 36.3 34.2 32.4 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 35.9 36.4 34.2 32.5 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 36.0 36.4 34.1 32.4 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 36.0 36.4 34.1 32.4 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 35.8 36.4 34.0 32.3 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32,0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 35.7 36.3.

33.9 32.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0

.32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.7 35.7 36.2 33.8 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.8 35.7 36.1 33.6 32.1 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.8 35.8 35.8 35.8 36.0 35.9 33.5 33.4 32.0 32.0 32.0 32.0 32.0 32,0.

32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0.32.0 32.0 32.0 32.0- 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0.32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.8 35.8 35.7 33.2 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.8 35.9 35.5 33.1 32.0 32.0 32.0

-32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 35.6 35.8 36.1 34.2 32.4 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 32.0 I

HOUR MONTHLY AVERAGE 32.5

TA1BLE 3.3-1 DIFFERENCES IN SUCCESSIVE 110URLY MEANI TEMPERATURES IN -F AT MONITOR NO.

3 JANUARY 1980 DAY.

HOUR 1

2 3

4 5

6 7

a 9

10 11 12 13 14 15 16 17 18 19 20 21 22*

23 24 1

0.1 0.0 0.1 0;2 0.0

-0.1

-0.1 0.5 1.8 0.8 -1.4

-0.8

-0.3

-0.2 0.1 0.1.- 0.1 1.5

-0.2

-1.0

-0.4 -0.3

-0.2. -0.1 2

0.0 -0.1 0.0 -0.1

-0.1

-0.1 0.1 1.2 0.6 1.2 0.7 -0.8 -0.5

-0.2 -0.1 -0.1 -0.2 -0.1 -0.1 0.1

-0.6 -0.3

-0.2 -0.1 3

0.0 -0.1

-0.1 -0.2 0.0 0.4 1.2 2.6 0.8 -1.4

-1.1

-0.5

-0.2 0.0 -0.1 -0.2

-0.1

-0.1

-0.1 -0.1 -0.2

-0.3

-0.2

-0.2 4

0.0 0.0 -0.1

-0.1

-0.1

-0.1 0.7 2.3 1.2

-0.8 -1.0

-0'6 -0.3 -0.1

-0.1 0.0 -0.1

-0.1 -0.2

-0.2

-0.1

-0.1 0.0 0.0 5

0.0 0.0 0.0 0.5 0.2 -0.1 0.1 -0.1 0.0 '-0.4 -0.8

-0.2

-0.2 -0.1 -0.2 0.0 -0.1 0.1

-0.2 0.0 -0.1 0.0 -0.1 0.0 6

0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.2 0.1 0.1 0.0 0.0 0.2 1.5 0.5 -0.5

-0.2 -0.2

-0.3 7

-0.1 0.1 0.1 0.2 0.4 0.5 1.3 1.7 0.3

-1.4

-1.2

-0.6

-0.3

-0.1 0.1 0.0 -0.1 -0.1

-0.2

-0.3

-0.2

-0.1 -0.1 0.1 8

0.0 -0.1

-0.1

. 0.1 0.1 0.3 1.0 2.3 0.7

-1.4 -1.0 -0.4

-0.2 0.0 -0.1 0.1 0.0 -0.1 0.1

-0.1 0.0 -0.3

-0.1 0.0 9

-0.1 0.1 0.1 0.3 0.3.

0.5 0.6 1.0 1.3 1.0 -0.1

-0.6 -0.7

-0.6

-0.4 -0.3

-0.3

-0.2

-0.2

-0.2 -0.1

-0.1

-0.2

-0.1 10 0.1

-0.1

-0.1 0.0 0.1 0.3-0.3 0.6 0.9 0.8 -0.3

-1.1

-0.9 -0.4

-0.4

-0.2

-0.2

-0.1

-0.1 -0.1 -0.1

-0.1 0.0

-0.1 11 0.0 -0.1

-0.1 0.1 0.2 0.4 0.5 1.5 2.0 0.4 -0.5

-1.4

-0.9

-0.7

-0.8 -0.2

-0.1 -0.1

-0.2

-0.2 -0.1 0.0 0.0 0.0 12 0.1 0.0 0.0 -0.1 0.2 -0.2

-0.1

-0.1 0.0 0.1 0.1 0.1 0.1 0.0 0.1 0.0 0.0 -0.1 0.0 -0.1

-0.1 0.0 -0.1 0.0 13 0.0 0.0 -0.1

-0.1

-0.1 0.0 0.0 0.1 0.8 2.1 0.5

-1.4

-0.7

-0.5

-0.1 -0.1 -0.2

-0.1 0.0 -0.1 -0.1 0.0 0.0 0.0 14 0.0 0.0 -0.1

-0.1 0.0 0.1 0.6 1.8 0.6 -0.5

-0.6

-0.4 -0.2

-0.2 -0.1 0.0 -0.1

-0.1 0.0 -0.2

-0.1

-0.2 0.1

-0.1 15

-0.1 0.0 0.0 0.0 0.0 0.3 0.5 0.9 1.7 1.3

-1.0

-1.5

-0.6 -0.4 -0.3 0.0 -0.1

-0M3 0.0 0.0 -0.3

-0.1

-0.1 -0.1 16 0.0 0.0 0.1 0.1 0.0 0.1 -0.1 0.2 -0.2

-0.1 0.8 0.4 -0.3

-0.2 0.0 0.1 0.1

-0.2 0.0 0.0 0.0 0.0 -0.1

-0.1 17

-0.1 0.0 -0.2

-0.2

-0.1 0.1

-0.1

-0.1 0.0 0.2 0.3 0.1, 0.2 0.1 0.2

-0.1

-0.1 0.0 0.1 0.0 -0.2 -0.3

-0.2

-0.1 18 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.0

-0.1 0.2 0.3 0.1 0.1 0.1 0.0 0.0 0.0 0.0 -0.1 -0.1

-0.2 0.0 -0.1 0.0 19

-0.1

-0.2

-0.1

-0.2 0.0 0.0 0.0 0.0 0.0 0.1 0.0 -0.1 0.1 0.0 0.1 0.0 0.0 0.0 0.1

-0.1 -0.1 0.0 0.0 0.0 20 0.1

-0.1

-0.1 0.2 0.3 0.3 0.4 0.4 0.8 1.3 1.2

-0.4

-1.3

-1.1

-0.7

-0.4 -0.2 -0.2 0.4 -0.4

-0.2

-0.1

-0.1 -0.2 21 0.0 -0.1 -0.1

-0.2

-0.1 0.1 0.3 1.2 2.2

-0.1 -1.1

-0.6

-0.2

-0.1

-0.2 -0.1 0.0 -0.1 -0.1 -0.1 -0.2 -0.1 -0.1 0.0 22

-0.1 0.0 0.0 0.0

-0.1 0.2 0.2 0.9

'2.4 0.1 -1.3

-0.8

-0.5

-0.2 -0.1

-0.1 0.0 0.0 0.0 -0.1 0.0 0.0 -0.1 0.0 23 0.0 0.0 0.2 0.2 0.3 0.3 0.4 1.3 1.4 0.1 -1.1

-1.0

-0.8 -0.3

-0.2

-0.2 -0.1

-0.1 -0.1 0.0 -0.1 -0.2 0.0 -0.1 24

-0.2 -0.1 0.2 0.5 1.1 1.3 0.2 -0.6 -0.5

-0.6. -0.5

-0.2

-0.1 0.0 0.0 0.2 0.2 -0.1 0.1 -0.2 -0.4

-0.1 0.0

-0.1 25

-0.1 0.0

-0.1 0.1 0.3 0.4 0.5 1.1 1.5 0.2 -0.8

-0.8

-0.6

-0.2

-0.1

-0.2

-0.1 0.0 0.0 -0.2 -0.3 -0.1

-0:1

-0.2 26 0.1 -0.2 0.0 0.3 0.2 0.4 0.4 0.3 0.3 0.4 0.3 0.4 0.4 0.2 0.3 0.0 0.1 0.3 0.8 -0.2 -1.5

-1.1

-1.0

-0.4 27

-0.2

-0.1

-0.1 -0.2 0.0 0.1 0.2 0.2 0.4 0.5 0.5 0.7 0.7 0.5 0.5 0.2 0.0 0.1 0.2 0.2 0.1.0.1 0.0 0.1 28 0.2 0.2 0.2

'0.0

-0.0

-0.5

-0.5

-0.1

-0.5.- 0.2 -0.3

-0.6

-0.6

-0.5

-0.3

-0.2 -0.3

-0.1

-0.2. -0.1 -0.1 0.0 -0.2

-0.1 29

-0.1 0.0 0.0 0.0 0.1 0.2 0.4 1.2 1.6 0.8 -0.7

-0.7

-0.6

-0.6

-0.3 0.0 0.0 0.3 0.3

.0.5

-0.7

-0.6

-0.5

-0.2 30

-0.2

-0.2

-0.1 0.0 0.1 0.1 0.2 1.0 1.0 1.4 0.4 -0.7. -0.4

-0.1 -0.4 -0.6 1.2 0.0

-1.4

-0.9 -0.5

-0.3

-0.1

-0.1 31

-0.1

-0.1

-0.1 0.1 0.3 0.3 0.2 1.1 2.1

-0.3 -1.2

-0.8 -0.3

-0.1

-0.1 0.0 -0.2

-0.7 -0.6 -0.3

-0.4

-0.1 -0.1

-0.1 7.................

TABLE 3.3-2 DIFFERENCES IN SUCCESSIVE HOURLY MEAN TEMPERATURES IN *F AT MONITOR NO. 3 FEBRUARY 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 j

-0.1 0.0 -0.1 0.3

-0.3 0.0 0.0 0.1 0.0 0.0 0.1 0.1 0.0 0.1 0.3 -0.1 0.0 0.0 -0.2 0.0

-0.1 0.0 0.0 0.0 2

-0.1 0.3 -0.3 0.0 0i0 0.0 0.0 0.0 0.0 0.0 0.1 0;1 0.2 0.2 0.1

-0.1 0.0 -0.1 0.1

-0.2

-0.1 0.0 0.0 0.0 3

0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.3 -0.2 0.2 0.2 0.2 0.0 0.0 -0.1 -0.1

-0.1 0.0 0.0 0.0 0.0 0.0 4

-0.1 0.0 0.0

-0.1 0.0 0.0 0.0 0.0 0.1 O.b 0.0 0.1 0.0 0.0 0.0 0.0 -0.1

-0.1 0.0 -0.1

-0.1 0.0

-0.1 0.0 5

0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.4 1.6 1.3 -0.4

-0.2

-0.1

-0. 1

-0.1 O.O 0.8 2.2

-1.1

-0.8

-0.5

-0.3

-0.3 6

-0.3 0.1 0.2 0.5 0.3 0.3 0.4 0.8 1.4 -0.4

-1.6

-1.0

-0.2 0.2 0.1

-0.2

-0.2

-0.1 0.2 0.3 0.3 0.4 0.4 0.4 7

0.5 0.4 0.5 0.3 0.2 0.2 0.4 0.2 0.3 0.6 -1.1

-1.5

-0.8

-0.2

-0.3 1.1

-2.0 0.1 0.1 -0.9

-0.5

-0.1

-0.2 0.0 8

-0.4

-0.2

-0.1 0.4 0.5 0.5 0.4' 0.5 1.5 2.0 -1.9

-1.0

-0.1

-0.5 0.0 0.0 -0.2 0.4 2.1 -0.9

-1.8

-0.6

-0.2 -0.1

9.

-0.1 0.0

-0.1 0.1 0.3 0.7 0.1 0.3 0.6 0.6 1.1 0.9 0.8 0.5 0.4 0.5.

0.1 0.2 0.2 -2.2

-0.7

-0.2

-0.6 -0.4 10

-0.6

-0.3

-0.1 0.2 0.2 0.5 0.6 0.3 0.1 0.6 0.9 0.3.

0.5 0.4 0.3 0.2 0.1 0.2 -0.1

-2.9

-1.9

-0.2

-0.3 0.0 11

-1.1

-0.5

-0.3

-0.1 0.1

-0.1 0.5 0.2 0.3 1.2 0.6 1.1 1.2 0.4 0.4 0.0 -0.1 -0.2

-0.2

-0.7

-1.9

-1.8

-0.7

-0.4 12

-0.1

-0.1

-0.1

-0.1

-0.1 0.1 0.2 0.2 2.4 1.2 1.0 0.6 0.3 0.0 0.1 0.0 0.1 "-0.2 -0.5

-1.5

-1.7

-0.8

-0.4

-0.1 13

-0.1

-0.2 -0.2 0.0 0.0 0.2 0.4 0.9 0.8 1.3 1.1 0.3 0.5 0.3 0.2 0.0 -0.1 -0.3 -0.3 -0.1

-0.6 -1.2

-0.9 -0.5 14

-0.3

-0.2

-0.2

-0.1 0.0 0.3 0.3 0.4 0.9 0.8 0.6 0.7 0.7 0.4 0.0 0.0 -0.2

-0.2 -0.2

-0.2

-0.8 -0.7

-0.6

-0.5 15

-0.5

-0.4

-0.2 0.0 0.1 0.3 0.3 0.7 0.7 0.8 0.7 0.6 0.4 0.3 0.2 0.0 -0.2

-0.4 -0.3 -0.3

-0.3

-0.2

-0.2

-0.2 16 0.0 0.1 0.0 0.3 0.1 0.2 0.2 0.0 0.2 0.0 0.2 0.2 0.3 0.0 0.1 0.0 -0.1 -0.1 -0.4 0.1 0.1 0.0 -0.1

-0.3 17

-0.4

-0.3

-0.5

-0.1 0.0 -0.1 0.2 0.1 0.1 0.3 0.3 0.4 0.5 0.5 0.2 0.2 -0.1 -0.3

-0.3

-0.1 0.2 0.0 -0.4

-0.4 u,

18

-0.2

-0.7

-0.2

-0.3 -0.2

-0.4 0.0 0.1 0.3 0.4 0.7 0.7 0.6 0.3 0.0 -0.1

-0.3

-0.4

-0.4 0.0 0.2 -0.1

-0.2

-0.2 I

19

-0.3

-0.4

-0.2

-0.2 0.0 0.0 0.3 0.1 0.2 0.4 0.3 0.5 0.6 0.6 0.1 -0.7

-1.8

-1.6

-1.4

-1.2

-0.7

-0.4

-0.2 -0.1 20

-0.1

-0.1 0.0

-0.1 0.0 0.0 0.5 1.2 0.7 0.3 0.1 0.3 0.4 0.7 0.5 0.3 0.1

-1.2

-1.4

-1.4

-0.6

-0.3

-0.1 -0.1 21 0.0 0.0, -0.2 0.0 0.3 0.3 0.5 0.7 0.8 1.0 1.1 0.9 0.8 0.9 0.4 0.3 0.2 0.2 0.0 -0.1

-0.1

-0.5

-0.7

-0.6 22

-0.3

-0.5 0.0 -0.4

-0.4

-0.1

-0.2 -0.1 0.0 0.3.

0.1 0.0 0.0 0.0 0.1 0.1 0.0 0.1 0.0 -0.1

-0.3

-0.1 0.0 0.1 23 0.1 0.1 0.2 0.3 0.1 0.0 0.0 0.0 0.0 -0.1

-0.1 0.1 0.0 -0.8

-0.7

-0.4

-0.2

-0.3

-0.2 0.9 0.7 0.1

-0.1

-0.2 24

-0.3

-0.4

-0.1 0.1 0.2 0.3 0.4 0.4 0.4 0.4 0.5 0.5 0.4 0.4 0.3 0.4 0.1 -0.1

-0.2 0.1 0.3 -0.9

-0.6

-0.5 25

-0.4

-0.1

-0.3

-0.5

-0.3

-0.1 0.5 0.6 0.7 0.4 0.3 -0.1 0.0 0.1 -0.1

-0.6 -0.5

-0.1 -0.1

-0.1

-0.5

-1.2

-1.2

-0.4 26

-0.1 0.0 -0.2

-0.2

-0.1 0.0 0.3 0.6 0.8 1.1 1.0 0.6 0.4 0.2 -0.1 -0.2 -0.2 -0.3 0.0 0.4 0.1

-1.0

-1.1

-0.7 27

-0.5

-0.4

-0.2 0.0 0.1 0.2 0.3 0.5 0.7*

0.8 0.9 0.4 0.2 0.0 -0.1 -0.5 -0.3

-0.5

-0.6 -0.7 -1.3

-0.8 -0.4

-0.2 28

-0.1

-0.1

-0.2 0.0 0.0 0.2 0.3 1.0 1.8 0.8 -0.3

-0.4

-0.3 0.2 0.2 0.2 -0.1 -0.4

-0.3 0.2 0.8 0.2 -0.2 -0.5 29

-0.5

-0.3

-0.3

-0.3

-0.2

-0.1

-0.1 0.0 0.0 0.5 0.5 0.6 0.7 0.7 0.8 0.7 0.7

-1.6

-2.0

-1.5

-0.9

-0.4

-0.3 -0.1

TABLE 3.3-3 DIFFERENCES. IN SUCCESSIVE HOURLY MEAN TEMPERATURES IN OF AT MONITOR NO. 3 MARCH 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

23.

24 1

-0.2

-0.1 -0.1 0.0 -0.1 0.2 0.4' 0.4 0.5 0.5 0.8 1.2 1.2 0.4 0.3 0.3 -0.1 -0.4

-0.3

-0.1 0.0 0.2 0.0 0.3 2-0.2 0.1 0.1 0.1 0.0 0.0 0.1 0.0 -0.1 0.0 0.4 0.3 0.4 0.4 0.4 0.3 0.2 0.0

-0.1

-0.1

-0.1

-0.2 -0.2

-0.2 3

-0.2

-0.2 -0.2

-0.1

-0.1 0.0 0.0 0.0 0.3 0.3 0.4 0.4 0.3 0.0 -0.4 -0.4

-0.4 -0.6

-1.0

-1.7

-1.6

-1.0

-0.6

-0.4 4

-0.2

-0.1 -0.1 0.0 0.0 0.2 0.4 0.5 1.0

q. 9 1.1 1.0 0.4 0.3 0.0 -0.2 0.0 -0.1 -0.7

-1.2

-1.7

-0.7

-0.2

-0.2 5

0.0 -0.1 0.0 0.3 0.5 0.5 0.5 0.6 1.1 0.8 0.8 0.2 -1.9

-1.6

-1.1

-0.2 0.1 0.4 -0.2

-0.8

-0.5

-0.2 0.0 0.0 6

-0.1 0.0 0.1 0.3 0.3 0.4 0.6 0.8 0.8 1.0 0.8 0.7 1.2 0.3 0.0 0.0 -0.2 -0.4

-0.2 0.2 -1.8

-0.9

-0.4 -0.4 7

. -0.6 -0.6 -0.2 0.0 0.1 0.3 0.5 0.5 0.6 0.6 0.7 0.5 0.9 0.7 0.6 0.4 0.3 0.0 0.1

-0.7 -2.9

-2.0

-1.4

-0.8 8

-0.3 -0.1 0.1 0.0 -0.1

-0.1 0.0 0.3 0.4 1.1 2.4 0.3 -0.5

-0.4 -0.4

-0.6

-0.6 -0.2 0.4 1.9 0.8 -0.7

-1.3

-1.1 9

-0.5

-0.2

-0.1 0.0 -0.2

-0.1 0.0 0.2 0.4 0.5 0.6 0.8 0.7 0.6 0.6 0.8 0.6 0.4 0.3 0.5 -1.9

-1.5

-1.0

-0.6 10

-0.3

-0.4 -0.3

-0.2 -0.1 0.0 0.2 0.5 1.0 1.1 1.0 0.8 0.6 0.2 0.2 0.0 -0.4 -0.8

-1.8

-2.1

-1.1

-0.5 -0.1 -0.1 11

-0.1 -0.1

-0.1 0.4 0.7 1.0 0.7 0.9 -1.0

-1.5

-0.5 -0.3

-0.1 0.4 0.-7 1.0 1.1 0.8

-1.5

-1.6

-0.8 -0.3 -0.2 -0.1 12 0.0

-0.1

-0.2 0.0 0.3 0.6 0.5 0.6 0.5 0.3 0.3 0.4 0.2 0.4 0.2 0.3 0.6 0.3 0.2 -0.7

-1.9

-1.4

-0.6 -0.4 13

-0.1

-0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.3 0.6 0.4 1.0 0.8 0.6 0.3 0.0

-0.4 -1.3

-1.3

-0.7 -0.4 14

-0.2 -0.1

-0.1 0.1 0.9 0.3 0.4 0.3 0.0 -0.1 0.0 0.3 0.3 0.1 0.3 0.3 0.3 0.0 0.1

-0.5

-1.3

-0.9

-0.3

-0.1 15

-0.2

-0.1

.0.0 -0.1

-0.1

-0.1 0.2 0;3 0.6 1.7 1.4

-0.3

-1.0 -0.5 0.0 -0.1 -0.3 -0.2 0.2 1.6

-0.3 -0.6 -0.4

-0.4 16

-0.5 -0.4 -0;3 0.0 0.3 0.6 0.4 0.2 0.3 0.5 0.4 0.6 0.5 0.6 0.4 0.6 0.4 0.3 0.3

• 0.1 0.1 0.1 0.1 0.0 17 0.0 -0.2

-0.1 0.0 0.0 0.0 0.0 0.1 0.2 0.3 0.2 0.3

.0.1 0.0 -0.1 -0.3 -0.7 -1.6

-2.0

-1.6 -0.9 -0.5

-0.2

-0.1 18 0.0 0.0 0.1 0.5 0.3 0.2

-0.4

-0.5

-0.3

-0.2 0.0 0.0 0.0 0.1 0.2 0.0 -0.2 -0.1

-0.3

-0.1

-0.2 -0.1 0.0 0.0 19

-0.1 0.0 0.0 0.0 0.0

-0.1 0.0 0.1 0.0 0.0 0.1 0.2 0.1 0.1 0.0 0.1

-0.1 -0.1

-0.1 0.0 -0.1 0.0 0.0

-0.1 20 0.0 0.0 0.0 0.0 0.0 -0.1 0.1 0.1 0.2 0.2 0.1 0.1 0.2 0.0 0.1 0.1 0.0 -0.2

-0.1 -0.2 -0.1

-0.1 0.0

-0.1 21 0.0 -0.1

-0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 -0.1 -0.1 -0.1 -0.1

-0.2

-0.1 22 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.1 0.0.'-0.1 0.0 0.0 0.0 0.1 0.0 0.1 23 0.0 0.0 0.0 0.0 0.1 0.0

'0.1 0.0 0.0 0.1 0.1 0.2 0.2 0.0 0.0 0.2 0.1

-0.1.

0.0 -0.1

-0.2 0.0 0.0 0.2 24 0.1 0.0 0.1 0.0 0.1 0.0 0.1 0.0 -0.1 0.1 0.2 0.2 0.3 0.1 0.2 0.0 -0.1 0.0 -0.2

-0.1

-0.2 0.1 0.0 0.0 25 0.0 0.1 0.0 -0.1

-0.1

-0.1 0.0 0.0 0.1 0.2 0.2 0.2 0.0 0.0 -0.1

-0.2

-0.2 -0.2

-0.1

-0.1

-0.1 0.0 0.1

-0.1 26 0.0 -0.1

-0.1

-0.1 0.0 -0.1 0.0 0.0 -0.1 0.1 0.1.

0.2 0.1 0.0 0.1 0.1 -0.1 0.0 0.1 0;I 0.1 0.1 0.1 0.0 27 0.0 0.0 -0.1 0.0 -0.1

-0.1 0.0 0.0 -0.1 0.1 0.0 0.2 0.1 0.2 0.1 0.3

-0.1 0.0 0.1 -0.1 0.0 0.0 0.0 0.0 28 0.0 0.1 0.0 0.0 0.1 0.1.

0.0 0.0 0.1.

0.1 0.2 0.3 0.3

.0.2 0.1 0.1 0.0 0.0 0.0' -0.1 -0.1

-0.1 -0.1 0.0 29

-0.1 0.0 -0.1 0.1

.0.0

-0.1

-0.1 0.0 -0.1 0.0 0.0 0.1 0.0 -0.1

-0.1 -0.2

-0.1 -0.1 0.0 0.2 0.3 0.2 0.2 0.2 30 0.1 0.1 0.0 0.1 0.0 0.0 0.0 -0.1 0.0 0.0 0.2 0.1 0.1 0.2 0.0 0.0 -0.1 -0.1 -0.2 0.1 -0.1 -0.1

-0.1 -0.2 31

-0.3 -0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 0.0 0.1 0.0 0.1 0.2 0.1 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0

TABLE 3.3-4 DIFFERENCES IN SUCCESSIVE HOURLY MEAN TEMPERATURES IN *F AT MONITOR NO. 3 APRIL 1980 DAY I

2.

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 HOUR 1

2 3

4 5

6 7

8 9

10 I1 12 13 14 0.0 0.0 0.0 0.0 -0.1

-0.1

-0.1 0.0 0.0 0.1 0.2 0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.0 0.0

-0.1 0.0 0.1 0.0 0.1 0.1 0.1 0.2 0.0

-0.1 0.0 0.1 0.0 -0.1 0.0 0.0 0.0 0.0 0.1 0.2 0.2 0.3

-0.1 0.2 0.1 0.1 0.1 0.1 0.0 0.0 0.0

-0:1 0.0 0.1

-0.1 0.0 0.0

-0.1

-0.1

-0.1 0.0 0.0

-0.1 0.0

-0.1 0.0 0.0 0.1 0.0 0.0

-0.1

-0.2

-0.1

-0.1 0.0 -0.2 0.0 -0.1 0.0 0.0 0.'1 0.2 0.2 0.1 0.1 0.0 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.2 0.1 0.3 0.3 0.3 0.0 0.0 0.1 0.1 0.0 0.1 0.0 0.1 0.4

-0.3 0.1 0.0 0.0 0.0

-0.1 0.0 -0.1

-0.1 0.0 -0.1

-0.2 0.0 -0.1 0.0 0.1 0.0 0.1 0.2

-0.1

-0.1

-0.2

-0.1 0.1 0.0 0.0 -0.2

-0.5

-0.1

-0.2 0.1 0.0 0.1 0.1 0.1 0.0 0.0 -0.1 0.0 0.1 0.0 0.0.

0.0 0.1 0.1 0.1 0.1 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.1

-0.2

-0.1

-0.1

-0.1 0.0 0.0 0.0 0.0

-0.1 0.0 0.1 0.1 0.2 0.2 0.2 0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.2 -0.1

-0,1 0.0 -0.1 0.0 0.1 0.0

-0.1 0.0 -0.1 0.0 0.0 0.0 0.1 0.1 0.3 0.3 0.3 0.0 -0.1 0.0 -0.1 0.0 -0.1

-0.1 0.0

-0.1 0.0 0.1 0.2 0.0 0.1

-0.2

-0.1 0.0

-0.1

-0.2

-0.2

-0.1 -0.2.

0.0 0.0 0.2 0.0 0.2 0.1

-0.1 0.0 0.0 0.1 0.1 0.0 0.0 0.0 -0.1 0.0 0.0 0.0

-0.1 -0.1 0.1 0.0 0.0 0.1 0.0 0.0 0.1 0.0 0.1 0.1 0.2

-0.1 0.1 0.1 0.0 0.0 0.0 -0.1 0.1 0.1 0.1 0.1 0.2 0.3 0.2 0.4 0.2 0.3 0.1 0.0 0.0 0.0 0.0. -0.1 0.0 0.0 0.0 0.2 0.3 0.3 0.3 0.4 SYSTEM INOPERATIVE 0.1 0.0 0.1 -0.1 0.0 0.1 -0.1

-0.4

-0.3 0.0 0.0 0.1 0.2 0.0 -0.1

-0.1

-0.1 -0.1.

0.0 0.0 0.1 0.1 0.1 0.2 0.1 0.3 0.3

-0.1 0.0 0.1 0.1 0.0 -0.1

-0.1

-0.2

-0.1 -0.1

-0.1 0.0 0.0 0.1 0.0 0.0 0.0

-0.1 0.0 0.0 0.0 -0.1 0.0 o.1 0.1 0.2 0.2 0.3 0.1 0.0 0.1

-0.1 0.1.

0.0 0.0 -0.1 0.1 0.1 0.1 0.1 0.0

-0.1

-0.1 0.0

-0.1

-0.1 0.1 0.0 0.0 0.0

. 0.0 0.0 0.0 0.0 0.0

-0.2

-0.2

-0.1

-0.2

-0.1 0.0

-0.1

-0.1 0.1 0.0 0.1 0.0 0.0 0.0

-0.1 0.0 -0.1 0.0 0.0 0.0 0.1 -0.1 0.0 0.1 0.0 0.1 0.1 0.2 15 16 17 18 19 20 21 22 23 24 0.2 0.1 0.1 0.0 -0.1

-0.1 0.0 0.0 0.0 0.1 0;0 0.1 0.2 0.1 0.1 0.0 -0.1 0.0 -0.1 0.0 0.2 0.2 0.2 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.4

-0.5 0.0 -0.2 -0.1

-0.3

-0.3

-0.2

-0.1 0.2 0.1 0.2 0.1 0.0 0.0 -0.1 -0.1 -0.1

-0.2 0.2 0.1 0.1 0.1 0.1 0.0

-0.1 0.0 0.1 0.0 0.1 0.0 0.1 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 0.1 0.0 0.0 0.1 0.3 -0.3

-0.1 0.1

-0.1

-0.1 0.1 0.1 0.1 0.1 0.0 0.1 -0.1 0.0 0.0 0.0 0.0 -0.1

-0.1

-0.1

-0.2 -0.1

-0.2 -0.2 -0.1

-0.1 0.1-0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.1 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.2 0.2 0.0 0.4 -0.3 0.0

-0.1 0.0 -0.1 0.0 0.0 0.1

-0.1 0.0 0.0 0.0 0.0 0.0 0.1

-0.2 0.1 0.1 0.3 0.2 0.1 -0.1 0.0 0.0 0.0 0.0 0.0 0.2 0.0 -0.1

-0.1

-0.1

-0.1 0.0 -0.1 0.0 0.2 0.1 0.1 0.0 0.0 0.0 0.0 0.0 -0.1 0.0.

0.0 0.1 0.1 0.0 0.0 0.0 0.0 0.1 0.0 -0.1 0.1 0.1 0.0 0.0

-0.1 0.1

-0.1 0.0 0.0

-0.1 0.1 0.0 0.0 -0.1 -0.1 0.0 -0.2 0.1

-0.1 0.0 0.2 0.2 0.1

-0.1

-0.1

-0.3

-0.2 -0.1 0.0.

0.1 0.3 0.3 0.2 0.2 0.0 0.1

-0.2

-0.1 -0.1

-0.2 0.3 0.2 0.2 0.0 0.0 -0.2

-0.1

-0.1 -0.1 0.0 0.0 0.2 0.1 0.0 0.1 0.0 0.0 -0.1

-0.1 0.0 0.2 0.2 0.0 0.1

-0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0

-0.2

-0.1

-0.1 0.0 0.0 -0.1 -0.1

-0.1

-0.1

-0.2 -0.1 -0.1 -0.2

-0.2 0.0 0.0 -0.1 0.0 -0.1 0.0 -0.1

-0.1 0.0

-0.1 0.2 0.2 0.1 0.1 0.1 -0.1

-0.1 0.0 0.0 0.0 I

O.,j

TABLE 3.3-5 DIFFERENCES IN SUCCESSIVE HOURLY MEAN TEMPERATURES IN "F AT MONITOR NO. 3 HAY 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1

0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.0

-0.1 -0.1

-0.1 0.0 0.1 0.0 2

0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.2 0.2 0.;.

0.3 0.2 0.3 0.3 0.2 0.2 0.0 0.1

-0.1

-0.3 0.0 0.0 3

0.0 0.1 0.0 0.0 0.0 -0.1

-0.2 0.0 0.0 0.1 0.3 0.3 0.4 0.4 0.3 0.4 0.1 0.1 0.0 0.2 0.0 -0.3 0.0 -0.1 4

-0.2 0.1 0.0 0.0 0.1 0.0 0.1 0.0 0.0

.9.1 0.2 0.1 0.1 0.3 0.3 -0.1 0.0 0.1 0.0 -0.1 0.0 0.0 0.0 0.0 5

-0.1 0.0 -0.1 0.1 0.0 0.1 0.0 0.2 0.4 0.1 0.5 0.6 0.9 0.2 0.5 0.2 -0.3

-0.7

-0.4

-0.2

-0.5

-0.1 0.0 0.0 6

0.1 0.0 0.1 0.1

-0.1 0.1 0.2 0.1 0.1 0.7 0.5 0.4 0.3 0.1 0.3 -0.2

-0.3

-0.4

-0.3

-0.1 0.0 -0.1 0.1 0.2 7

0.2.

0.2

-0.1

-0.1

-0.3

-0.1

-0.2 0.1 0.2.

0.1 0.1

-0.1 0.0 0.0 0.2 0.2 0.1 0.2 0.2 0.1 0.0 0.0 -0.1

-0.1 8

-0.3

-0.2 -0.2

-0.1

-0.2

-0.3

-0.2

-0.2 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 -0.1. -0.1 -0.1 0.0 0.0 0.0 9

0.1 0.0 0.0 0.0 0.0 -0.2 0.0 -0.4

-0.1 0.0 0.0 -0.1

-0.1 0.0 0.0 0.0 0.0 0.0 0.0 -0.2

-0.1

-0.1

-0.1

-0.1 10

-0.1

-0.1 0.0 -0.1

-0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.2 0.3 0.1 0.1 0.0

-0.1

-0.1

-0.1 -0.2

-0.3

-0.2

-0.1 11

-0.2

-0.1

-0.1. -0.2

-0.1 0.0 -0.1 0.0 0.0 0.0 0.2 0.2 0.1 0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 -0.1

-0.1

-0.1 -0.1 12 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 -0.1 0.2 0.1 0.3 0.2 0.4 0.2 0.1 0.3 0.1 0.0 -0.1 0.0 0.1 0.0 -0.1 13 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.0 0.1 0.1

• 0.1 0.1

-0.1 -0.1 -0.1 14

-0.2

-0.1

-0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 0.1 0.0 0.1 0.1 0.1 0.2 0.1 0.0 0.0 0.1 0.0 0.1 0.0 0.0 -0.1 15

-0.1 0.0 0.0 0.0 -0.1 0.0 -0.1 0.1 0.0 0.1 0.1 0.2 0.0 -0.1 0.0 0.0 0.0 -0.1 -0.1

-0.1 -0.1

-0.1 -0.1

-0.1 16

-0.1

-0.1

-0.1 0.0 -0.1

-0.1 0.0 -0.1 0.1 0.0 0.2 0.2 0.3 0.3 0.2 0.2 0.2 0.1 0.0

-0.2

-0.1

-0.1

-0.2 0.1 17

-0.2 0.0 -0.1 0.0 0.0 -0.1 0.0 -0.1 0.0 0.1 0.2 0.3 0.3 0.3

.0.4 0.2 0.3 0.2 0.0 -0.1

-0.2

-0.1 0.0 0.1 c

18 0.0 0.2 0.1

-0.1 0.0 0.0 0.0 0.1 0.1 0.0

-0.1

-0;2 0.1 0.0.

0.1 0.0 0.0 0.0 0.0 0.0 -0.1 -0.1 0.0 -0.2 1

19

-0.1 0.2

. 0.2 0.0 0.0.

0.0 0.1 -0.1

-0.3 0.1 0.1 0.1 0.0 0.0 0.1 0.2 0.2 0.2 0.2 0.1 -0.1

-0.1

-0.1

-0.1 20

-0.3

-0.2

-0.1

-0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.2 0.2 0.3 0.3 0.2 0.3 0.2 0.2 0.1 0.0 -0.2

-0.1 -0.1 -0.2 21

-0.1

-0.1 0.0 0.1 0.0 0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.1 0.01 0.1 0.0 0.1 0.1 22 0.1 0.0

-0.1 0.4 0.1 0.1

-0.5

-0.3

-0.2 0.0 0.0 0.1 0.3 0.2 0.3 0.2 0.2 0.2 0.1 0.0 -0.1 -0.1

-0.1 0.0 23

-0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 0.0 0.0 0.2 0.2 0.3 0.5 0.3 0.4 0.4 0.3 0.1 0.1 0.1 0.0 -0.1 0.0

-0.1 24

-0.2 0.0 -0.1 0.0 0.0 -0.1

-0.1 -0.1

-0.1 0.0 0.1 0.2 0.2 0.3 0.2 0.3 0.2 0.2 0.2 0.0 0.0 0.1 0.1 0.3 25 0.1 0.1 0.0 0.0 0.1 0.0 0.2 0.2 0.3

-0.2

-0.2 0.1 0.3 1.0 0.5 0.3 0.1 0.0 -0.1

-0.6 -0.5

-0.3 -0.3 0.2 26 0.3 0.0 -0.2 0.0 0.1 0.0 -0.2

-0.1 0.0 0.3 0.3 -0.2 0.1 0.6 0.3 0.0 0.1 0.0 0.0 -0.1

-0.5

-0.8 0.0 0.3 27

-0.1

-0.1

-0.2 0.1 0.1

-0.1

-0.2

-0.6

-0.2 0.0 0.1 0.1 0.2 0.3 0.3 0.4 0.7 0.1

-0.2

-0.3

-0.2 -0.1

-0.2

-0.1 28 0.2 0.0

-0.1

-0.4 0.0 0.1

-0.1 -0.2

-0.1

-0.1

-0.1 0.2 0.2 0.3 0.2 0.3 0.2 0.4 0.1

-0.1

-0.2 -0.2 0.0 0.2 29 0.0 -0.2

-0.1

-0.1 0.0 -0.1

-0.1

-0.1 -0.1

-0.1 -0.3 0.0 0.2 0.3 0.2 0.3 0.3 0.4 0.4 0.1

-0.1

-0.5 -0.2 0.3 30

-0.1

-0.4 0.1 0.1 0.1 0.0 0.2 -0.4

-0.5

-0.1 0.0 -- 0.1 0.1 0.2 0.1 0.0 0.0 -0.1 0.1 0.6 0.2 0.0 0.1 0.0 31

-0.2

-0.2

-0.2 0.0 0.1 0.0 0.0 0.4 01.0

-0.1

-0.3

-0.2 0.1 0.5 0.4 0.4 0.2 0.1

-0.1 0.0 -0.3

-0.2 0.0 0.0

TABLE 3.3-6 DIFFERENCES IN SUCCESSIVE HOURLY MEAN TEMPERATURES IN *P AT MONITOR NO.

3 DECEMBER 1980

DAY, HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22' 23 24 1

0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.1 0.2 0.3 0.2 0.1 0.1 0.0 -0.1

-0.1 0.0 0.0 -0.1

-0.1

-0.2 2

-0.2 0.0 -0.1 0.0 0.0 0.1 0.0 0.0 0.0 -0.1 0.2 0.1 0.2 0.0 0.1

-0.1 -0.2 0.0 -0.1

-0.1 0.0 0.0 0.0 0.0 3

0.0 0.2 0.0 0.0 0.0

-0.1

-0.1 0.0

-0.1

-0#1 0.1 0.0 0.1 0.2 0.2

-0.3

-0.1 -0.1

-0.1

-0.1 0.0 0.0 -0.1

-0.1 4

0.0 0.0 -0.1 0.0 0.0 -0.1 0.0 -0.1 0.0 -0.1 0.1 0.0 0.0 0.1

-0.1 0.0 -0.1 0.0 -0.1

-0.1

-0.2

-0.1 0.0 -0.1 5

-0.1

-0.1

-0.2

-0.1

-0.2

-0.1

-0.1

-0.2 0.0 -0.1

-0.1 0.1 0.0 0.0 0.1 0.0 0.0

-0.1 0.0 -0.2 0.0 -0.1

-0.1 0.0 6

-0.1 0.0 -0.1

-0.1 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 7

0.0 0.0

-0.1 0.0 0.0 0.0 -0.1 0.1

-0.1 0.1 0.6

-0.2

-0.1 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 0.0 8

-0.1 0.0 0.0 0.0 0.1 0.1

-0.1

-0.1 0.1

-0.1 0.1

-0.1 0.0 0.0 0.0 0.1 0.0

-0.1 0.0 0.0 0.0 0.0 0.0 0.0 9

0.0 0.2' 0.0 -0.1 0.0

-0.1 0.0 0.0 0.1 0.2 0.2 0.2 0.2 -0.1 ý'0. 1

-0.2

-0.1 0.0 -0.1 0.0 0.0 0.0 0.0

-0.1 10 0.0 0.0 0.1 0.0 0.0 0.0 -0.1 0.0 0.0

-0.1 0.1 0.4 0.1

-0.2 0.0

-0.1 0.0 -0.1 0.1

-0.1 0.1 0.0 -0.1

-0.1 11 0.1 0.0 0.1 0.0 -0.2

-0.2 -0.2 0.0 -0.1

-0.1 0.0 0.2 0.2 0.1 0.1

-0.2

-0.1

-0.2 0.0 -0.1

-0.1 0.0 0.0 0.0 12 0.1 0.0

.0.1 0.1 0.0 -0.1 0.1 0.1 0.0 0.1 0.1 0.0 -0.1 0.1 0.0 0.0 0.5 0.0 -0.3

-0.1

-0.1

-0.1.

0.0 0.0 13 0.0 0.0 0.0 0.0

-0.1 0.0 0.0 0.0 0.0 0.5 -0.1

-0.2

-0.1 0.8 -0.3

-0.3

-0.1

-0.1 0.0 0.0-0.0 -0.1 0.0

-0.1 14 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 -0.2

-0.2 0.0 0.0 0.1 0.0 0.0 0.7 -0.3

-0.3

-0.1

-0.1.

0.0 -0.1 0.0 15

.0.0 0.1

-0.1 0.0 0.0 0.0 0.0 0.1 0.5

-0.2

-0.1 -0.1 0.0 0.0 0.0 0.0 0.2 0.4 -0.3

-0.2 0.0 -0.1

-0.1 0.0 16 0.0

-0.1 0.3 -0.3 0.0 0.0 0.0 0.6 0.0 0.1 -0.2

-0.2

-0.2 0.0 0.0 0.0 0.1 0.0 -0.1 0.0 -0.1 0.0 0.0

-0.1 17 0.0 0.0 0.1 0.0

-0.1 0.0 0.0 0.6 0.0 -0.2

-0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0

-0.1 10 18 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.8

-0.2

-0.2

-0.2

-0.1 0.0 -0.1 0.1

-0.1 0.0 0.0 0.0 0.0 0.0 0.0

-0.1 1

19 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.9 -0.1 -0.3

-0.2

-0.2 0.0 0.0 0.0 -0.1 0.0 0.0 0.0 0.0 0.0 -0.1 0.0 20 0.0 0.2 -0.2 0.0 0.0 0.0 0.0 0.0 0.6 0.2 -0.1

-0.1

-0.3

-0.1

-0.1 0.0 0.1 0.8

-0.3

-0.3

-0.1 -0.2 0.0 0.0 21

-0.1 0.0 0.1 0.1 --0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.4 0.2 -0.3 -0.1

-0.0 0.0 0.7

-0.1 -0.3 -0.2

-0.1

-0.2 0.0 22 0.0 0.1 0.0 -0.1 0.0 0.0 0.0 0.0 0.8

-0.1

-0.2

-0.2

-0.1 -0.2 0.0 0.1 0.0 0.6 -0.1

-0.3

-0.1

-0.1 0.0

-0.1 23

-0.1 0.0 0.0 0.1 0.0 0.0 -0.1 0.4 0.6 -0.2

-0.2

-0.2

-0.1 -0.2 0.0 0.0 0.0 0.9 -0.2

-0.3

-0.2 0.0 -0.1

-0.1 24

-0.1 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.9*

-0.3

-0.3

-0.1 0.0 0.0 -0.1 0.2 -0.3 0.9 -0.3

-0.2

-0.2

-0.1 0.0

-0.1 25

-0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.0. 0.1 0.1 0.0 0.0 0.1

-0.1 -0.1 0.0

-0.1 0.0 0.0 -0.1 -0.1 0.0 26

-0.1 0.0 -0.1 0.1

-0.1 0.0 0.0 0.1 0.0 0.0 0.1 0.0 0.1 0.1 0.0 -0.1 0.0 -0.1 0.0 0.0 0.0 0.1 -0.1 0.0 27 0.0 0.0 -0.1 01 -0.1 0.1 0.0 -0.1 0.0 0.1 0.1 0.1 0.1 0.0 0.1

-0.1

-0.1

-0.1

-0.1 0.0 -0.1 0.0 -0.1 0.0 28 0.0 0.0 0.1 0.0 0.1 0.0 0.0 0.1 OO 0.1 0.1 0.0 0.0 0.1 0.0 0.0 0.0

-0.1 0.1

-0.1 0.1

-0.1 0.0 0.0 29 SYSTEM INOPERATIVE 30 SYSTEM INOPERATIVE 0.0

-0.1 0.0 0.0 -0.1 0.0 -0.1

-0.1 31 0.0 0.0

-0.1 0.0 0.0 0.0 0.0 0.0 0.2 0.4 0.4 0.2 -0.3

-0.1 0.0 0.0 0.1

-0.2 0.0 0.1 0.2 0.0 0.0 0.0

TABLE 3.5-1 I

DIFFERENCES IN HOURLY MEAN TEMPERATURES IN OF BETWEEN MONITOR 3 AND MONITOR 7 JANUARY 1980 HOUR 1

2 3

4 5

6 7

8 9

10 11 12

-- 13 14 15 16 17

18.

19 20 21 22 DAY 23 24.

I

(.n 03 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1.8 1.8 1.7 1.6 1.9 1.8 1.7 1.7 1.8 1.8 0.1 0.0 1.4 1.5 1.5 1.4 2.2 2.3 3.4 3.3 2.1 2.0 1.8 1.8 1.7 1.7 1.5 1.5 1.7 1.7 1.6

-1.6 2.0 2.1 1.7 1.6 1.7 1.5 1.3 1.2 1.2.

1.0 1.2 1.3 1.8 1.8 1.5 1.4 1.7 1.7 2.1 1.9 2.5 2.4 7.5 7.7 1.8 1.7 2.0 1.9 1.5. 1.4 1.9 2.1 2.1 2.0 1.9 2.4 4.2 5.0.

1.6

• 1.5 1.4 1.3 1.4 2.6 3.2 4.4 1.7 1;5 1.5 1.9 3.1 5.7 6.5 5.1 1.6 1.5 1.4 1.3 2.0 4.3 5.5 4.7 1.8 2.3 2.5 2.4 2.5 2.4 2.4.

2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 1.8 2.2 2.7 4.0 15.7 6.0 4.6 1.3 1.4 1.5 1.8 2.8 5.1 5.8 4.4 2.4 2.7 3.0 3.5 4.1 5.1 6.4 7.4 3.2 3.2 3.3 3.6 3.9 4.5 5.4 6.2 1.9 2.0 2.2 2.6 3.1 4.6 6.6 7.0 1.9 1.8 1.9 1.7 1.6 1.6 1.6 1.7 1.6 1.5 1.4 1.4 1.4 1.5 2.3 4.4 1.5 1.4 1.4 1.5 2.1 3.9 4.5 4.0 1.7 1.7 1.7 2.0 2.5 3.4 5.1 6.4 1.7 1.8 1.8 1.9 1.8 2.0 1.8 1.7 1.9 1.7 1.6 1.7 1.6 1.5 1.5 1.7 1.6 1.6 1.6 1.6 1.6 1.6 1.4 1.6 1.3 1.1 1.1 1.1 1.1 1.1 1.1 1.2 1.1 1.4 1.7 2.0 2.4 2.8 3.6 4.9 0.9 0.7 0.6 0.7 1.0 2.2 4.4 4.3 1.3 1.3 1.2 1.1 1.6 2.5 4.9 5.0 2.0 2.2 2.5 2.8 3.2 4.5 5.9 6.0 1.6 2.1 3.2 4.5 4.7 4.1 3.6 3.0 1.6 1.7 2.0 2.4 2.9 4.0 5.5 5.7 1.9 2.2 2.4 2.8 3.2 3.5 3.8 4.2 2.3 2.2 2.1 2.2 2.4 2.6 3.0 3.5 7.9 7.9 7.1 6.6 6.0 6.0 5.5 5.2 1.7 1.7 1.8 2.0 2.4 3.7 5.2 6.0 1.6 1.8 1.9 2.0 2.2 3.2 4.1 5.6 1.3. 1.4 1.7 2.0 2.2 3.3 5.4 5.1 3.6 2.8 5.1 4.3 4.0 3.5 3.7 3.1 1.2 1.0 0.0 0.1 3.4 2.8 3.4 3.0 7.3 6.7 5.9 4,8 6.5 5.1 1.8 1.8 4.9 3.4 3.4 3.0 5.4 3.9 2.5 2.8 2.0 2.1 1.9 2.0 1.1 1.0 6.0 5.6 3.1 2.5 3.7 2.9 4.9 3.9 2.5 2.3 4.6 4.0 4.5 4.8 4.0 4.7 4.8 4.3 5.2 4.5 5.9 5.1 3.8 3.0 2.5 2.3 2.4 2.5 2.4 3.9 3.7 2.7 2.3 2.0 3.8 3.6 3.5 3.4 3.2 3.1 3.0 3.1 2.5 2.2 3.3 3.3 3.2 3.0 2.9 2.8 2.7 2.6 2.4 2.1 2.8 2.7 2.6 2.6 2.5 2.4 2.2 2.0 1.9 1.8 0.8 0.7 0.5 0.5 0.4 0.5 0.3 0.3 0.2 0.2.

0.3 0.4 0.5 0.5 0.5 0.7 2.2 2.7 2.2 2.0 2.5 2.4.

2.5.

2.5 2.4 2.3 2.1 1.8 1.6 1.5 2.8 2.8 2.7 2.8 2.8 2.7 2.8 2.7 2.7 2.4 6.0 5.4 5.0 4.7 4.4 4.2 4.0 3.8 3.7 3.6 3.9 3.5 3.1 2.9 2.7 2.6 2.5 2.4 2.3 2.2 4.2 3.5 2.6 2.4 2.3 2.2 2.0 1.8 1.7 1.7 1.9 1.8 1.9 1.9 1.9 1.8 1.9 1.8 1.7 1.7 2.7 2.1 2.0 1.9 1.7 1.6 1.6

.1.6.

1.5-1.5 2.8 2.6 2.5 2.5 2.4 2.3 2.3 2.1 2.0 1.8 3.3 2.9 2.6 2.6 2.5 2.2 2.2 2.1 1.9 1.8 2.5 2.2 2.2 2.3 2.4 2.2 2.3 2.3 2.3 2.3 2.2 2.3 2.5 2.4 2.3 2.3 2.4 2.4 2.2 1.9 2.1 2.2 2.1 2.1 2.1 2.2 2.1 2.0 1.8 1.8 1.0 1.1 1.2 1.1 1.1 1.2 1.3 1.2 1.1 1.1 4.3 3.1 2.4 1.9 1.7 1.6 2.0 1.5 1.3 1.3 2.3 2.1 1.9 1.8 1.9 1.8 1.7 1.7 1.4 1.4 2.4 2.1 2.0 2.0 2.0 2.0 2.0 1.9 1.9 1.9 3.1 2.8 2.6 2.4 2.3 2.2 2.1 2.1 2.0 1.8 2.2 2.2 2.2 2.4 2.6 2.5 2.6 2.4 2.0 1.9 3.4 3.2 3.1 2.9 2.8 2.8 2.8 2.6 2.3 2.2 5.2 5.4 5.7 5.7 5.8 6.1 6.9 6.6 5.0 4.0 5.3 5.9 6.3 6.5 6.6 6.7 6.9 7.0 7.3 7.2 3.6 3.1 2.8 2.7 2.4 2.3 2.1 2.0 1.9 2.0 3.9 3.3 3.0 3.0 3.1 3.4 3.7 4.1 3.3 2.8 4.7 4.6 4.4 3.6 4.9 4.7 3.3 2.4 2.0 1.7 2.7 2.6 2.5 2.6 2.4 1.7 1.0 0.7 0.3 0.3 1.8 2.0 1.9 1.8 0.1 1.8 1.4 2.3 3.4 2.2 1.7 1.6 1.5 1.9 1.7 2.2 1.7 1.7 1.2.

1.2 1.3 1.8 1.8 1.9 2.1 3.0 7.3 1.8 2.3 1.6 0.2 1.7 1.9 1.7 1.8 0.1 1.5 1.5 2.3 3.3 2.1 1.8 1.7 1.5 1.8 1.6 2.1 1.6 1.7 1.2 1.1 1.3 1.8 1.7 1.8 2.0 2.6 7.4 1.8 2.2 1.5 0.2

TABLE 3.5-2 DIFFERENCES IN HOURLY MEAN TEMPERATURES IN OF BETWEEN MONITOR 3 AND MONITOR 7 FEBRUARY 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 1

2 3

4 5

6 78 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 0.1 0.1 0.0 0.3 0.0 0.0 0.1 0.4 0.1 0.1 0.1 0.1 0.2 0.2 0.2 -0.1 0.2 0.1 0.3 0.3 0.2 0.1 0.1 " 0.2 0.1 -0.2 0.1 0.0 0.1 0.1 2.0 2.1 2.3 2.9 3.2 3.5 5.1 5.5 6.0 6.3 6.5 6.7 1.7 1.5 1.3 1.7 2.3 2.8 2.2 2.2 2.1 2.3 2.5 3.2 4.8 4.5 4.4 4.6 4.8 5.3 3.2 2.7 2.4 2.3 2.3 2.3 2.1 2.1 2.0 2.0 1.9 1.7 2.7 2.5 2.2 2.2 2.4 2.6 3.9 3.7 3.5 3.4 3.4 3.7 4.5 4.1 3.9 3.9 4.0 4.4 6.8 6.9 6.9 7.2 7.3 7.6 7.8 7.5 7.0 6.9 6;9 6.8 8.1 7.3 7.2 6.9 6.7 6.3 7.6 7.1.

7.1 6.9 6.8 6.8 1.7 1.6

.1.7 1.6 1.6 1.6 1.6 1.6 1.4 1.4 1.7 2.0 7.5 7.0 7.0 6.6 6.2 6.1 6.2 6.3 6.5 6.8 6.9 6.9 5.3 4.9 4.8 4.9 5.1 5.4 7.3 7.2 6.9 6.4 6.1 6.0 3.6 3.6 3.4 3.2 3.1 3.1 4.5 4.1 3.9 3.9 4.0 4.2 2.5 2.4 2.2 2.2 2.2 2.4 5.1' 4.8 4.5 4.2 4.0 3.9 0.0 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.1 0.2 0.1 0.1 0.1 0.4 0.2 0.2 0.2 0.3 0.2 0.2 0.0 0.0 0.4 1.9 3.2 3.9 4.7 6.1 5.7 4.1 7.1 7.4 7.7 8.3.

7.2 3.0 3.5 5.0 7.0 5.2 3.2 3.5 4;2 4.8 5.9 5.9 6.1 6.3 6.9 7.7 2.7 2.9 3.2 4.4 5.1 2.2 2.4 4.7' 5.9 6.8 3.0 3.9 4.7 5.9 7.0 4.1 4.5 5.4. '6.1 6.7 4.7 5.4 6.1 6.9 7.5 7.8 7.8 8.0 8.0 8.2 7.0 7.1 7.2.

7.5 7.8 6.3 6.4 6.7.

7.1 7.8 7:2 7.3 7.5 7.9 8.2 2.1

.3.3 4.0 4.3 4.4 2.5 3.2 4.0 5.0 6.1 5.9 5.8 5.8 6.1 6.2 6.9 6.9 6.9 6.8 6.7 5.8 6.2 6.6 7.0 7.5 6.5 7.1 7.8 8.2 8.5 3.4 4.0 4.8 5.9 6.9 4.5 5.0 5.7 6.5 7.4 2.7 3.7 5.5 6.3 6.0 3.8 3.8 3.8 4.3 4.8 12 13 -

14 15 16 17 18 19 20 21 22 23 24 0.2 0.2 0.2 0.5 0.4 0.4 0.4 0.2 0.2 0.1 0.1 0.1 0.1 0.2 0.4 0.6 0.6 0.5 0.5' 0.4 0.6 0.4 0.3 0.3 0.2 0.3 0.3 0.5 0.7 0.6 0.7 0.6 0.5 0.5 0.5 0.5 0.5 0.4 0.5 0.3 0.2 0.3 0.3 0.3 0.2 0.1 0.1

-0.3 0.1 0.1 0.1 0.1 2.9 2.5 2.4 2.4 2.3 2.3 3.1 5.3 4.2 3.4 2.9 2.6 2.3 3.0 2.8 2.9 3.0 2.9 2.7 2.6 2.8 3.1 3.4 3.8 4.2 4.6 5.7 4.9 4.7 4.4 5.5 3.5 3.6 3.7 2.7 2.2 2.2 2.10 2.0 4.2 4.1 3.7 3.7 3.6 3.4 3.8 5.8 5.1 3.2 2.6 2.4 2.4 6.8 7.6 8.1 8.6 9.1 9.2 9.3 9.5 7.3 6.6 6.4 5.8 5.4 8.0 8.6 8.9 9.3 9.5 9.6 9.8 9.7 6.8 4.9 4.6 4.3 4.3 6.2 7.3 7.6 8.0 8.0 7.9 7.7 7.5 6.8 4.9 3.0 2.3 2.0 7.3 7.6 7.7 7.7 7.7 7.8 7.7 7.1 5.6 3.9 3.2 2.8 2.8 7.2 7.6 7.9 8.1 8.1 8.0 7.7 7.4 7.3 6.6 5.5 4.6 4.1 7.4 8.1 8.4 8.5 8.5 8.3 8.1.

7.9 7.6 6.8 6.1 5.5 5.0 8.1 8.4 8.8 8.9 8.9 8.7 8.4 8.1 7.8 7.2

. 7.3 7.1 6.8 8.4 8.7 8.7 8.8 8.9 8.8 8.7 8.3 8.4 8.5 8.5 8.4 8.2 8.2 8.7 9.2 9.4 9.6 9.5 9.2 8.9.

8.8 9.0 9.0 8.6 8.2 8.5 9.1 9.4 9.4 9.3 9.0 8.7 8.2 8.3 8.4 8.3 7.8 7.9 8.7 9.3 9.9 10.0 9.3 7.5 5.9 4.4 3.2 2.4 1.9 1.7 1.7 4.7 5.1 5.8 6.3 6.6 6.7 5.4 4.1 2.7 2.1 1.8 1.7 1.6 7.0 7.8 8.7 9.1 9.4 9.4 9.8 9.8 9.7 9.6 9.1 8.4 7.8 6.2 6.2 6.2 6.3 6.4 6.4 6.5 6.5' 6.4 6.1 6.0 6.0 6.1 6.8 6.8 6.0 5.3 4.9 4.7 4.4 4.2 5.1 5.8 5.9 5.8 5.6 8.0 8.4 8.8 9.1 9.5 9.6 9.5 9.3 9.4.

9.7 8.8 8.2 7.7 8.4 8.4 8.5 8.4 7.8 7.3 7.2 7.1 7.0 6.5 5.3

.4.1 3.7 7.5 7.9 8.1 8.0 7.8 7.6 7.3 7.3 7.7 7.8 6.8 5.7 5.0 7.8 8.0 8.0 7.9 7.4 7.1 6.6 6.0 5.3 3.9 3.1 2.7 2.6 5.6 5.3 5.5 5.7 5.9 5.8 5.4 5.1 5.3 6.1 6.3 6.1 5.6 5.4 6.1 6.8 7.6 8.3 9.0 7.4 5.4 3.9 2.8 2.5 2.2 2.1

TABLE 3.5-3 DIFFERENCES IN HOURLY KEAN TEMPERATURES IN *F BETWEEN MONITOR 3 AND MONITOR 7 MARCH 1980 HOUR 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 DAY 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 Ln 17 w,

18 1

19 20 21 22 23 24 25 26 27 28 29 30 31 2.0 1.9 1.8 1.8 1.7 7.7 7.8 7.9 8.0 8.0 9.2 9.1 8.8 8.8 8.7 2.0 1.9 1.9 1.9 1.9 2.7 2.6 2.6 2.9 3.4 1.8 1.8 1.9 2.2 2.5 4.2 3.6 3.4 3.4 3.6 2.2 2.1 2.3 2.3 2.2 3.4 3.2 3.1 3.1 2.9 4.2 3.9 3.6 3.4 3.3 2.0 1.9 1.8 2.2 2.9 1.6 1.6 1.4 1.4 1.7 1.9 1.8 2.0 2.1 2.1 1.9 1.8 1.8 1.9 2.8 2.1 2.0 2.0 1.9 1.8 3.1 2.7 2.4 2.4 2.7 9.2 9.0 8.9 8.9 8.9 2.1 2.1 2.2 2.7 3.0 1.0 1.0 1.0 1.0 1.0 1.4 1.3 1.2 1.2 1.2 0.4 0.3 0.3 0.3 0.3 0.7 0.7 0.7 0.7 0.8 0.3 0.4 0.6 0.8 1.0 0.8 0.9

.0.9 0.7 1.3 1.3 1.3 1.1 1.1 1.0 1.5 1.5 1.4 1.4 1.4 1.0 1.2 1.3 1.3 1.3 0.7 0.7 0.7 0.9

• 1.0 0.8 0.9 1.0 1.1 1.1 0.8 0.7 0.7 0.6 0.7 1.9 2.3 2.7 3.2 3.7

.4.5 5.7 6.9 7.3 7.6 7.9 7.8 7.4 7.1 7.0 7.0 7.2 7.2 7.5 8.0 8.1 8.1 8.0 8.0 8.4 8.6 9.0 9.4 9.9 10.2 10.4 10.4 10.3 10.1 10.0 9.8 9.7 9.5 8.6 8.6 8.6 9.0 9.3 9.6 10.0 10.3 10.3 9.9 9.5 9.1 8.5 7.5 5.8 4.2 3.2 2.5 2.1 2.1 2.5 3.0.

4.0 4.8 5.9 7.0 7.3 7.4 7.6 7.4 7.4 7.3 6.7 5.4 3.7 3.0 2.9 2.7 3.9 4.4 5.0 6.1 6.9 7.7 7.8 5.9 4.3 3.2 2.8 3.2 3.6 3.4 2.3 2.1 1.9 1.9 1.9 2.9 3.5 4.3 5.1 6.1 6.9 7.6 8.7 9.0 9.0 9.0 8.8 8.4 8.2 8.4 6.5 5.6 5.3 4.8 3.9 4.4 4.9 5,1.5 6.0 6.7 7.2 8.0 8.8 9.3 9.8 10.1 10.1 10.2 9.5 6.6 4.6 3.2 2.4 2.0 1.9 2.4 2.8 3.9 6.3 6.5 6.0 5.7 5.3 4.7 4.1 3.9

!.3 6.2 7.0 6.3 5.0 3.9 2.8 2.8 3.0 3.4 3.9 4.5 5.2 5.9 6.4 7.0 7.8 8.4 8.8 9.1 9.7 7.6 6.1 5.1 4.5 3.3 3.5 4.0 5.0 6.1 7.1 7.8 8.4 8.6 8.8 8.8 8.4 7.6 5.8 3.6 2.5 2.0 2.0 2.0 3.9 4.6 5.5 4.4 2.9 2.5 2.2 2.0 2.4 3.1 4.1 5.2 6.1 4.6 2.9 2.0 1.8 1.6 1.5 2.3 2.8 3.4 3.8 4.0 4.3 4.6 4.8 5.2 5.4 5.7 6.3 6.6 6.8 6.1 4.3 2.9 2.3 2.0 2.1 2.1 2.1 2.0 2.0 2.2 2.3 2.9 3.3 4.4 5.2 5.8 6.0 6.0 5.7 4.4 3.2 2.5 2.1Y 3.1 3.5 3.8 3.8 3.7 3.7 4.0 4.3 4.4 4.7 5.0 5.3 5.3 5.4 4.9 3.6 2.7 2.4 2.3 1.7 1.9 2.2 2.8 4.5 5.9 5.6 4.6 4.1 4.1 4.0 3.7 3.5 3.7 5.3.

5.0 4.4 4.0 3.6 3.3 3.7 3.9 4.2 4.7 5.1 5.7 6.2 6.8 7.2 7.8 8.2 8.5 8.8 8.9 9.0 9.1 9.2 9.2 8.9 8.9 9.0 9.2 9.5 9,7 10.0 10.1 10.1 10.0 9.7 9.0 7.4 5.4 3.8 "2.8 2.3 2.2 2.1 3.2 2.7 2.2 1.9 1.8 1.8 1.8 1.7 1.8 2.0 2.0 1.8 1.7 1.4 1.4 1.2 1.0 1.1 1.1 0.9 0.9 1.0 1.0 1.0 1.1 1.3 1.3 1.4 1.4 1.4 1.4 1.2 1.2 1.3 1.2 1.2 1.2 1.1 1.0 1.1 1.2 1.4 1.6 1.7 1.8 1.9 1.9 1.9 2.0 2.0 1.8 1.7 1.5 1.5 1.5 1.5 1.4 1.2 1.1 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.2 1.2 0.8 - 0.4 0.4.

0.3 0.2 0.6 0.5 0.3 0.3 0.4 0.5 0.5 0.4 0.5 0.6 0.6 0.7 0.7 0.7 0.5 0.5 0.4 0.4 0.5 0.5 0.6 0.8 1.0 1.0 0.9 1.0 1.1 1.2 1.4 1.2 1.1 1.1 1.1 0.9 0.8 0.6 0.4 0.3 0.2 0.3 1.1 1.3 1.3 1.1 1.0 1.2 1.3 1.5 1.5 1.6 1.5 1.3 1.2 0.9 0.7 0.6 0.6 0.6 0.7 1.4 0.9 1.2 1.4 1.5 1.8 2.2 2.1 2.2 2.3 2.0 1.6 1.2 1.0 1.0 1.1 1.1 1.4 1.2 1.0 0.9 0.9 0.7 0.7 0.7 0.5 0.6 0.6 0.6 0.5 0.5 0.7 0.8 0.8 1.0 1.1 1.3 1.4 1.3 1.2 1.1 0.7 0.0 -0.1

-0.3 -0.7 -0.2 0.3 1.1 0.9 1.0 1.3 1.1 0.9 1.0 1.0 1.0 1.4 1.4 1.3 1.2 0.9 0.7 0.8 0.8 1.2 1.4 1.6.

1.7 1.7 1.6 1.4 1.0 0.7 0.5 0.6 1.0 0.9 1.0 1.0 1.1 1.2 1.4 1.4 1.0 0.7 0.2 -0.1

-0.3

-0.4 -0.3 0.0 0.2 0.4 0.6 1.1 1.0 0.8 0.8 0.8 0.9 1.0 1.2

1. 4 1.5 1.5 1.5 1.5 1.3 1.5 1.5 1.4 1.3 1.1 0.6 0.6 0.4 0.2 0.0 -0.1 0.1 0.1 0.2 0.2 0.2 0.3 0.3 0.3 0.2 0.1 0.1 0.3 0.4 S.

1~**~~

i

TABLE 3.5-4 DIFFERENCES IN HOURLY MEAN TEMPERATURES IN "F BETWEEN MONITOR 3 AND MONITOR 7 APRIL 1980 DAY HOUR 1

2 3

4 5

6 7

. 8 9

10 11 12 13 -

14 15 16 17 18 19 20 21 22 23 24 1

0.5 0.6 0.7

.0.8 0.7 0.7 0.6 0.6 0.5 0.2 0.2 0.2 0.1I

-0.2 0.0 0.0 0.2 0.1 0.0 -0.4

-0.5

-0.6

-0.6

-0.4 2

-0.2 0.0 0.1 0.2 0.3 0.3 0.2 0.2 0.3 0.3 0.4 " 0.6 0.7 1.0 1.1 1.2 1.4 1.5 1.6 1.5 1.4 1.4 1.3 1.3 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 1.4 1.4 1.4 0.2 0.4 0.6 1.5 1.5 1.5 2.0 1.6 1.6 0.6 0.8 1.0 1.0 1.0 1.2 2.0 2.0 1.9 1.4 1.1 0.8 0.4 0.5 0.5 0.1 0.2 0.2 0.3 0.2 0.3 0.5 0.4 0.5 0.5 0.7 0.7 0.8 0.8 0.9 1.2 1.3 1.4 0.4 0.3 0.3 0.4 0.4 0.5 0.5 0.5 0.5 1.8 1.8 1.8 2.3 2.4 2.4 1.6 1.4 1.2.

1.4 1.8 2.1 1.6 1.6 1.5 1.1 1.2 1.2 1.1 1.1 1.8 1.6 1.6 1.2 1.1 1.0 1.6 1.7 1.6 1.6 1.5 1.2 0.-7 0.2 0.0 0.0 0.8 1.0 1.3 1.4 1.5.

1.5 1.5 1.5 1.7 1.6 1.5 1.6 1.6 1.5 1.6 1.4 1.3 0.9 0.9 0.7 1.6 1.7 1.6 1.6 1.5 1.5 1.2 1.0 1.0 1.2 1.1 1.3 1.6 1.6 1.4 1.2

.1.0 0.8 0.7 1.3 1.3 1.2 1.3 1.3 1.3 1.6 1.3 1.3 1.3 1.2 1.8 1.8 1.7 1.4 1.4 1.2 1.1 1.1 1.0 1.0 0.8 1.1 1.4 1.6 1.6 1.2 1.2 1.0 1.1 1.1 0.5 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.3 0.4 0.5 0.5 0.6 0.6 0.7 0.8 1.0 0.9 0.5 0.5 0.5 0.5 0.4 0.4 0.5 0.5 0.5 0.4 0.5 0.6 0.7 0.5 0.8 0.8 0.9 0.7 0.5 0.5 0.7 0.7 0.6 0.6 0.5 0.5 0.5 0.1 0.3 0.3 0.9 1.0 1.0 1.0 1.0 0.9 0.7 0.8 0.8 0.6 1.5 1.5 1.4 1.4 1.1 1.0 0.9 0.8 0.6 0.6 0.5 0.8 1.0 1.2 1.4 1.3 1.2 1.2 1.3 1.3 0.6 0.7 0.9 1.1 1.1 1.0 0.8 0.9 0.9 0.7 0.4 0.6 0.4 0.7 0.6 0.5 0.5 0.6 1.3 1.2 1.8 1.8 1.8 1.7 1.5 1.3 1.2 1.2 1.2 1.4 SYSTEM INOPERATIVE 2.5 2.4 2.4 2.5 2.3 1.8 1.4 1.3 1.2 1.2 1.1 0.9 0.8 0.7 0.8 0.9 1.0 1.1 1.2 1.4 2.4 2.5 2.5 2.4 2.2 2.0 1.8 1.6 1.4 1.4 1.4 1.3 1.3 1.3 1.2 1.2 1.3 1.2 1.3 1.2 1.4 1.3 1.5 1.5 1.5 1.3 1.2 1.2 1.2 1.3 1.0 0.9 1.0 1.0 1.1 1.1 1.2 1.3 1.4 1.6 1.3 1.2 1.2.

1.1 1.1 1.2 1.3 1.5 1.5 1.6 1.0 1.1 1.1 1.3 1.2 1.3 1.4 1.4 1.5 1.3 0.2 0.3 0.7 1.0 1.0 0.9 0.6 0.4 0.3 0.2 0.3 1.8 1.9 2.4 2.1 - 2.2 2.1.

2.0 1.9 1.6 1.4 1.4 0,7 0.7 0.7 1.0 1.3 1.5 1.8 1.8 1.8 1.8 1.8 1.1 0.7 0.4 0.6 0.8 0.8 0.7 0.5 0.4 0.5 0.4 1.6 1.8 1.7 1.8 1.8 1.7 1.6 1.4 1.3 1.1 1.0 1.3 1.5 1.6 1.6 1.8 2.2 1.9 1.9 2.0 2.0 2.0 1.2 1.3 1.4 1.5 1.6 1.6 1.7 1.6 1.6 1.6 1.6 1.2 1.2 1.1 1.0 0.9 0.8 0.8 0.6 0.4 0.3 0.2 0.4 0.5 0.2 0.0 -0.2 -0.1 -0.1 -0.X -0.1 0.1 0.1 0.8 0.7 0.7 0.6 0.5 0.4 0.3 0.4 0.4 0.4 0.4 0.2 0.1 0.1 -0.1 0.3 0.1 0.4 0.4 0.5 0.4 0.5 0.3 0.4 0.4 0.3 0.3 0.3 0.4 0.4-0.4 0.6 0.4 0.4 0.1

-0.1 0.1 0.3 0.4 0.4 0.6 0.7 0.8 0.7 0.6 0.6 0.7 0.6 0.6 0.6 0.7 0.8 1.0 1.1 1.2 0.6 0.6 0.6 0.7 0.8 0.9 1.0 0.9 0.9 0.7 0.6 1.0 0.5 0.4 0.5 0.6 0.6 0.7 0.6 0.6 0.5 0.3 0.7 0.7 0.7 0.5 0.5 0.5 0.7 0.6 0.6 0.6 0.5 1.9 2.1 2.1 2.1 2.0 1.9 1.9 1.8 1.9 1.8 1.8 1.7 1.8 1.9 2.0 2.0 2.0 1.8 1.7 1.6 1.7 2.1 1.2 1.4 1.6 1.8 2.0 2.1 2.3 2.1 2.0 1.8 1.6 1.5 1.7 1.7 1.9 2.0 1.9 1.5 1.4 1.3 1.3 1.4 1.4 1.3 1.5 1.6 1.6 1.7 1.7 1.7 1.6 1.5 1.6 1.3 1.2 1.3 1.2 1.1 0.9 0.9 0.9 0.9 0.9 1.0 1.2 1.3 1.5 1.6 1.7 1.7 1.7 1.5 1.5 1.4 1.4 1,7 1.9 2.0 2.1 2.2 2.3 2.2 2.2 2.3 *2.2 2.0 1.7 1.7 1.7.

1.6 1.7 1.6 1.6 1.5 1.4 1.5 1.3 1.2 1.1 1.1 1.2 1.2 1.2 1.1 0.9 0.9 0.9 1.0 I

TABLE 3.5-5 DITFERENCES IN HOURLY MEAN TEMPERATURES IN *F BETWEEN MONITOR 3 AND MONITOR 7 MAY 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 1

1.0 1.0 1.0 0.8 0.7 0.6 0.6 0.6 0.7 0.8 1.1 1.2 1.5 1.6 1.6 1.5 1.4 1.3 1.1 1.0 1.0 1.1 1.1 1.2 2

1.1 1.1 1.1 1.2 1.1 1.2 1.2 0.9 0.9 1.1 1.0 1.1 1.3 1.3 1.4 1.4.

1.4 1.4 1.3 1.4 1.3 1.0 1.0 1.0 3

1.1 1.3 1.3 1.3 1.2 1.0 0.5 0.3 0.3 0.3 0.4 0.7 1.2 1.5 1.8 1.9 1.8 1.7 1.3 1.4 1.4 1.1 1.0 0.9 4

0.6 0.7 0.8 0.7 0.9 1.0 1.1 1.1 1.1 r.o 1.0 0.9 0.9 1.2 1.4 1.2 1.1.

1.1 0.9 0.5 0.5 0.6 0.6 0.6 5

0.5 0.5 0.5 0.5 0.6 0.8 0.9 1..1 1.5 1.5 2.0 2.6 3.3 3.4 3.7 3.7 3.1 2.0 1.2 0.9 0.6 0.5 0.5 0.5 6

0.6 0.7 0.8 0.9 0.9 1.0 1.1 1.2 1.2 1.8 2.1 2.3 2.3 2.3 2.5 2.0 1.4 0.8 0.5 0.5 0.7 0.7 0.9 1.2 7

1.5 1.7 1.6 1.6 1.3 1.1 0.7 0.7 0.7 0.5 0.6 0.6 0.6 0.6 0.9 1.2 1.5 1.8 2.2 2.4 2.6 2.8 2.8 2.7 8

2.4 2.3 2.1 2.0 1.9 1.6 1.5 1.4 1.5 1.5 1.6 1.7 1.8 1.7 1.6 1.5 1.3 1.1 1.2 1.0 0.9 0.9 0.9 0.9 9

1.1 1.3 1.5 1.8 1.9 1.9 2.0 1.7 1.6 1.6 1.5 1.4 1.4 1.5 1.6 1.5 1.5 1.4 "1.6 1.4 1.2 1.4 1.3 1.3 10 1.2 1.1 1.1.

1.0 0.9 0.9 1.0 1.0 0.9 1.1 1.3 1.5 1.8 2.1 2.1 2.2 2.2 2.2 2.1 2.1 1.9 1.6 1.6 1.6 11 1.5 1.4 1.3 1.2 1.0 1.0 0.9 0.9 0.9 0.8 1.0 1.3 1.5 1.6 1.6 1.6 1.6 1.6 1.7 1.7 1.7 1.6 1.5 1.5 12 1.5 1.4 1.4 1.2 1.2 1.1 1.0 1.0 0.9 1.1 1.2 1.3 1.3 1.6 1.6 1.6 1.7 1.7 1.7 1.5 1.4 1.5 1.5 1.4 13 1.3 1.2 1.4 1.4 1.6 1.6 1.6 1.6 1.6 1.4 1.3 1.3 1.2 1.3 1.3 1.3 1.3 1.5 1.6 1.7 1.9 1.8

• 1.8 1.7 14 1.5 1.4 1.2 1.2 1.1 1.1 1.0 0.9 0.8 0.8 0.8 0.9 0.9 0.8 0.6 0.7 0.7 0.7 0.8 0.8 0.9 0.9 0.9 0.8 15 0.7 0.7 0.8 0.8 0.8 0.9 0.9 1.0 0.9 1.0 1.0 1.2 1.1 1.0 1.1 1.1 1.1 1.0 1.0 0.8 0.6 0.7 0.7 0.6 16 0.6 0.6 0.7 0.8 0.8 0..7 0.7 0.6 035 0.4 0.5 0.5 0.4 0.4 0.6 0.8 0.9 0.9 0.9 0.8 0.7 0.6 0.4 0.5 L'

17 0.4 0.4 0.4 0.5 0.5 0.5 0.6 0.4 0.2 0.1 0.0 0.0 0.1 0.0 0.1 0.1 0.3 0.3 0.4 0.3 0.2 0.2 0.2 0.4 18 0.6.

0.9 1.0 1.0 1.0 1.0 1.1 1.0 1.1 1.1 0.9 0.7 0.8 0.8 0.9 1.0 1.0 0.8 0.7 0.7 0.8 0.7 0.8 0.6 19 0.4 0.6 0.8 0.8 0.8 0.8 0.9 0.7 0.3 0.3 0.2 0.1 0.1 0,1 0..1 0.4 0.7 1.1 1.3 1.5 1.4 1.2 1.1 1.0 20 0.7 0.5 0.4 0.3 0.4 0.6 0.6 0.6 0.6 0.5 0.5 0.6 0.7 0.7 0.7 0.9 1.0 1.0 1.0 0.9 0.7 0.6 0.5 0.3 21 0.2 0.2 0.2 0.4 0.4 0.7 0.8 0.8 1.0 1.0 0.9 0.8 0.6 0.4 0.1

-0.1

-0.2

-0.1 0.1 0.2 0.5 0.6 0.8 1.0 22 1.2 1.3 1.2 1.7 1.8 2.0 1.5 1.2 0.9 0.8 0.7 0.6 0.7 0.6 0.4 0.4 0.7 0.9 1.1 1.0 1.0 0.9 0.8 0.8 23

.0:7 0.6 0.4 0.3 0.2 0.1 0.0

-0.1

-0.3 -0.3- -0.3

-0.1 0.2 0.2 0.4 0.8 0.9 1.1 1.3 1.4 1.3 1.3 1.4 1.-5 24 1.4 1.4 1.3 1.2 1.2 1.1 1.0 0.8 0.5 0.3 0.1 0.0 -0.1

-0.2 -0.2 0.0 0.1 0.2 0.4 0.4 0.5 0.6 0.7 1.0 25 1.2 1.3 1.4 1.5 1.6 1.5 1.6 1.7 1.8 1.2 0.6 0.4 0.5 1.5 2.0 2.3 2.5 2.6 2.7 2.3 1.9 1.5 1.1 1.4 26 1.8 1.9 1.7 1.7 1.9 2.0 1.9 1.8 1.5 1.4 1.4 0.9 0.8 1.4 1.7 1.6 1.9 1.9 2.1 2.3 2.0 1.2 1.1 1.3 27 1.2 1.2 1.0 1.2 1.3 1.3 1.1 0.4 0.0 -0.1

-0.2. -0.2

-0.4

-0.3 0.1 0.3 0.9 1.0 0.9 1.1 1.2 1.2 0.8 0.7 28 1.1 1.1 1.0 0.6 0.8 1.0 0.8 0.4 -0.1

-0.6

-0.7 -0.4

-0.6 0.0 0.6 0.7 0.9 1.3 1.3 1.3 1.3 1.4 1.5 1.8 29 1.8 1.8 1.8 1.8 1.8 1.7 1.7 1.7 1.4 0.9 0.6 0.5 0.4 0.3 0.2 0.5 0.8 1.3 1.9 2.1 2.2 1.8 1.8 2.1 30 2.1 1.7 1.9 2.0 2.2 2.2 2.4 1.9 1.0 0.9 0.9 0.5 -0.2

-0.2

-0.3

-0.5

-0.8 -0.8

-0.4 0.4 0.9 1.0 1.2 1.6 31 1.1 1.1 1.0 0.9 1.2 1.2 1.3 1.6 1.6 1.4 1.1 0.9 1.0 1.6 2.1 2.6 2.7 2.8 2.7 2.6 2.2 1.9 1.9 1.9

TABLE 3.5-6 DIFFERENCES IN H1OIURLY MEAN TEMPERATURES IN OF BETWEEN MONITOR 3 AND MONITOR 7 DECEMBER 1980 DAY HOUR 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22

• 23 24 1

-0.1

-0.1

-0.1 0.0 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28.

29 30 31 0.1 0.1 0.1 0.1 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.1 0.1 0.1 0.1 0.3 0.5 0.7 0.8 0.9 0.9 0.8 0.7 0.6 0.6 0.5 0.4 0.2 0.0 0.1.

0.1 0.1 0.1 0.0 0.1 0.2 0.3 0.3 0.3 0.2 0.2 0.3 0.2 0.1 0.0 0.0 0.0 -0.1 0.0

-0.4

-0.2

-0.3

-0.5

-0.6

-0.6

-0.6

-0.5

-0.4

--09 0.9 0.6 1.0 10

.5

-0.4

-0.3

-0.2 0.4 0.4 0.6 0.6 0.7 0.6 0.7 0.8 0.8 0.9 0.9 0.9 0.9 1.0 1.0 1.1 1.0 1.0 1.2 1.2 1.1 1.2 1.1 1.0 0.9 1.0 0.9 0.8 0.9 0.8 0.7 0.8 0.7 0.6 0.8 0.8 0.6 0.6 0.5 0.4 0.4 0.4 0.3 0.3 0.3 0.3 0.3 0.4 0.5 0.6 0.6 0.6 0.5 0.5 0.4 0.4 0.4 0.4 0.3 0.4 0.3 0.4 1.0 0.8 0.7 0.7 0.7 0.7 0.5 0.5 0.5 0.5 0.6 0.7 0.6 0.5 0.6 0.5 0.6 0.5 0.5 0.5 0.5 0.6 0.5 0.7 0.7 0.6 0.6 0.5 0.5 0.5 0.6 0.8 1.0 1.2 1.4 1.3 1.2 1.0 0.7

.0.7 0.8 '0.8 0.8 0.8 0.7 0.7 0.7 0.6 0.7 1.1 1.2 1;0 1.0 0.9 0.8 0.8 0.9 0.9 0.7 0.5 0.3 0.3 0.2 0.1 0.1 0.3 0.5 0.6 0.7 0.5 0.1 0.1 0.2 0.3 0.3 0.2 0.3 0.4 0.4 0.5 0.6 0.6 0.5 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.9 0.8 0.6 0.5 1.3 1.0 0.7 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.9 - 0.7 0.5 0.5 0.5 0.6 0.6 0.6 0.4 0.5 0.4 0.4 0.4 0.4 0.4 0.5 1.0 0.8 0.7 0.6 0.6 0.6 0.5 0.5 0.5 0.4 0.7 0.4 0.4 0.4 0.4 1.0 1.0 1.1 0.9 0.7 0.5 0.5 0.5 0.5 0.3 0.3 0.4 0.4 0.3 0.3 0.3 0.9 0.9 0.7 0.5 0.5 0.5 0.5 0.5 0.5 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.4 1.2 1.0 0.8 0.6 0.5 0.5 0.4 0.5 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 1.3 1.2 0.9 0.7 0.5 0.5 0.5 0.5 0.3 0.5 0.3 0.3 0.3 0.3 0.3 0.3 0.9 1.1 1.0 0.9 0.6 0.5 0.4 0.4 0.3 0.3 0.4 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.8 1.0 0.7 0.6 0.6 0.4 0.5 0.5 0.4 0.4 0.4 0.4 -0.4 1.2 1.1 0.9 0.7 0.6 0.4 0.4 0.5 0.3 0.3 0.3 0.4 0.4 0.4 0.3 0.7 1.3 1.1 0.9 0.7 0.6 0.4 0.4 0.4 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4

'1.3 1.0 0.7 0.6 0.6 0.6 0.5 0.7 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.6 0.6 0.6 0.7 0.6 0.1 0.1 0.0 0.1 0.0 0.0 0.0 0.1 0.1 0.1 0.2 0.2 0.3 0.4 0.4 0.3 0.2 0.2 0.1 0.2 0.1 0.2 0.2 0.1 0.1 0.2 0.3 0.4 0.5 0.5 0.6

.0.5 0.0 0.0 0.1 0.1 0.2.

0.2 0.2 0.3 0.3 0.4 0.5 0.5 0.5 0.6 0.6 0.6 SYSTEM INOPERATIVE SYSTEM INOPERATIVE 0.7 0.3.

0.3 0.2 0.2 0.2 0.2 0.2 0.2 0.4 0.8 1.2 1.4 1.1 1.0 1.0 1.0 0.9 0.9 1.0 0.8 0.9 0.8 0.6 0.6 0.6 0.5 0.5 0.5 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5 0.9 0.9 0.8 0.8 0.8 0.8 0.9 0.8 0.9 0.8 0.9 0.9 0.4 0.2 0.2 0.1 0.0 0.0 1.1 1.1 0.8 0.7 0.6 0.5 0.6 0.5 0.5 0.5 0.5 0.4 1.3 1.0 0.7 0.6.

0.5 0.5 0.8 1.2 0.9 0.7 0.7 0.6 0.6 0.6 0.5 0.5 0.4 0.4 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4.

0.4 0.4 0.5 1.3 1.0 0.7 0.6 0.4 0.6 1.3 1.2 0.9 0.7 0.6 0.5 1.1 1.0 0.7 0.6 0.5 0.4 1.3 1.1 0.8 0.6 0.6 0.4 1.3 - 1.0 0.8 0.6 0.5 0.5 0.5 0.4 0.4 0.4 0.3 0.3 0.2 0.2 0.2 0.2 0.3 0.4 0.3 0.2 0.2 0.1 0.1 0.6 0.5 0.6 0.5 0.6 0.5 0.7 0.6 0.6 0.6 0.5 0.5 1.1 0.9 0.9 1.0 1.2 1.2 0.7 0.7 0.5 0.5 0.6 0.6 0.5 0.5 0.8 0.7 0.8 0.7 0.0 0.0 0.5 0.5 0.4 0,3 0.4 0.4 0.5 0.5 0.4 0.3 0.4 0.3 0.4 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.5 0.4 0.5 0.4 0.5 0.4 0.2 0.2 0.2 0.2 0.0 0.0 0.5 0.5 0.4 0.3 1.2 1.2

4.

WATER QUALITY STUDIES Four water quality parameters, in addition to temperature, have been monitored continuously by Honeywell W-20 Water Quality Data Collection Systems since 1968 at Station 3, downstream of Vermont Yankeei and since 1970 at Station 7, upstream of the plant.

Summaries of the dissolved oxygen and pH data collected in 1980 are shown in Table 4.1 for Station 3 and 4.2 for Station 7.

The dissolved oxygen data are reduced to daily means and daily maxima and minima with times of occurrence; the pH data are shown as. daily maxima and minima.

The amendment of Vermont Yankee's Appendix B Technical Specif-ications in February 1980 deleted the requirement that conductivity and turbidity be monitored continuously.

To complete the record on these parameters, data collected in January and February 1980 are summarized in Table 4.3.

The tabulated dissolved oxygen and pH data of Tables 3.1 and 3.2 are presented graphically in Figures 4;l through 4.4.

The shaded areas in those figures show the largest maximum and smallest minimum observed in that month in any one of the years of record prior to 1980.

The shaded areas in the dissolved oxygen graphs are divided by lines connecting the mean DO observed for each month in all the previous years of observations.

The maximum hourly average DO observed at Station 7 in June, 9.9 mg/l, was equal to the maximum previously observed there in 1973.

All other monthly DO maxima and minima at both stations in 1980 were-within the ranges previously observed for each month.

Monthly average DO concentrations in 1980 were also within extremes

-of the earlier years.

Station 3 monthly means in January through March and October through December were higher than the means for those months computed from the data of all prior years of observa-tions.

For Station 7, the January through March, June, November, and December 'means were greater than the means in those months for the years 1970-1979.

The pH maximum of 7.7 observed at Station 3 in January 1980.

exceeded the previous record there of 7.5 observed in 1975 and 1979.

All other pH maxima and minima of 1980 were-within the pH extremes that have been previously observed.

Grab samples of water quality analysis were collected once each quarter in 1980 at the two monitor stations and from Vermont Yankee's cooling water discharge to the river on the three sample dates on which the plant was operating.

These samples were analyzed for sixteen parameters by the procedures of'Stanard

• ai Methods for the Xxamination of Water' and'Wa'stewater,. 14th edition (APHA *_E al. 1976),;

The analytical results are shown in Table 4.4.

Concentrations observed in 1980 at both Station'3 and 7 for all parameters were well within extremes that had been observed in earlier study years.

On occasion Vermont Yankee adds the following chemicals to its cooling water discharge to the Connecticut River:

sodium sulfate, as demineralizer regenerant; sodium hypochlorite, to control biological fouling of the condenser 'cooling system;.and sulfuric acid, for pH control.

The amounts'.'of these chemicals-discharged to the river are relatively small and not likely to significantly alter the river's water quality.

However, to provide a quantitative basis for assessing the impact of Vermont Yankee's operation on Connecticut'River water quality, data on the concentrations of sodium ion,.chloride ion, sulfate ion,.and alkalinity concentrations were subjected to statistical analysis.

The statistical methods used with 'these four parameters have been detailed in Reports WV and V of this series (Aquatec" 1975, 1976).

Data 'collected forthese four-parameters at Stations 3'and

-7 before Vermont Yankee began operation and during the times of closed cycle operation through '1974 were combined and subjected to'

i linear regression analysis.

These analyses, Using Station 7 con-centrations as the independent variable, resulted in the statistics summarized in Table 4.5.

TABLE 4.5

SUMMARY

OF STATISTICS FROM LINEAR REGRESSION ANALYSIS OF-PREOPERATIONAL AND CLOSED CYCLE DATA AT STATIONS 7 AND 3 FOR FOUR PARAMETERS

'PARAMETER Sodium Sulfate Chlioride Alkalinity Sample size 70 72 79 80 Intercept 0.23 0.96 1.1 4.9 Regression coefficient 0.925 0.927 0.795 0.844 Standard error of regression coefficient 0.041 0.054 0.053 0.049 Correlation coefficient

.0.941 0.899 0.861 0.890 Standard error of estimate 0.348 0.987 0.841 2.95 The regresqi.on lines generated by th.ese analyses are plotted as solid lines in Figure 4.5 for sodium ion, Figure 4.6 for sul-fate ion, Figure 4.7 for chloride ion, and Figure 4.8 for alka-linity.

Each figure also shows, -,agdashed lines, the.*95% confidence limits for Station 3 concentrations predicted by the regression equation from new observations at Station 7.

These confidence limits were drawn from limits calculated for the minimum, mean, and maximum Station 7 concentrations used for each parameter in the regression analyses.

The applicable range of Station 7 con-centrations'for each regression equation is indicated on the figure by the vertical dashed lines at the minimum and maximum value of Station 7 concentrations used to develop the equation.

On each of the figures, points for the data from samples collected in September, during closed cycle operation, and December, when Vermont Yankee was not operating, ard plotted as filled circles.

Points for the data of February and May, when Vermont Yankee was using open cycle cooling, are plotted as open circles.

The plotted points for all four parameters are.well within the 95% confidence limits for Station 3 concentrations predicted by the regression equations.

DI SSOLVED OXYGEN STATION NO. 3 1980 10 E

a.0l.

5 0

3 6

7 MONTH SHADED AREA Maxima,means and minima observed in 1968-1979 See text.

MONTH 80 II.

MONTHLY MAXIMUM.

MONTHLY AVERAGE.

MONTHLY MINIMUM 12 FIGURE 4.1

DI.SSOLVED OXYGEN STATION NO. 7 1980 15 I0 E

0.

0.

5 0

1 2

3 4

5 6

7 8

9 10 11 12 MONTH SHADED AREA Maxima,means and minima observed in 1970- 1979.

See text.

MONTHLY MAXIMUM MONTHLY AVERAGE MONTHLY MINIMUM FIGURE 4.2

pH STATION NO. 3 1980 9.0 8.0 I

U,1 z-0.

7.0 6.0 5.0 I

3 4

a 6

MONTH 7.

8 9.

10 11 12 SHADED AREA Maxima and minima observed in 1968 - 1979.

See text.

MONTHLY MAXIMUM MONTHLY MINIMUM FIGURE 4.3

.s

~

~

-~

pH STATION NO. 7 1980 I

!N 9.0 ° 8.0-i-1 za 6.0 5.0 2

3 4

5 6

7 8

9 10 MONTH 12" SHADED AREA Maxima and minima observed in 1970 - 1979.

See text.

MONTHLY MAXIMUM i"

""i" MONTHLY MINIMUM FIGURE 4.4

COMPARISON OF OBSERVED STATION 3

SODIUM ION CONCENTRATIONS WITH STATION 3 CONCENTRATIONS PREDICTED FROM PREOPERATIONAL./CLOSED CYCLE DATA, STATIONS 7 AND 3, 1969 - 74 y

15 14 13 z

o 0

u o-z w0C.n 12 II t0 9

z 0

4) 8 7

6 5

4 3

2 0

4_1~

p. -

i 0

x 0

I

.2 3

4 5

6 7

8 9

10 If.

12 13 14 15 T A Tr

^

"V SODIUM ION CONCENTRATION (MG/L)

REGRESSION EOUAT.ION (y-.23 +-.925x0

.95%7, CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 VERMONT YANKEE CLOSED CYCLE OR NOT OPERATING, 1980 FIGURE 4.5 0

0 COMPARISON OF OBSERVED STATION 3 SULFATE ION CONCENTRATIONS WITH STATION 3 CONCENTRATIONS PREDICTED FROM PREOPERATIONAL/CLOSED CYCLE DATA, STATIONS 7AND 3, 1969 -74 de 0

z us z

0 ILI 15 14 13 12 II I0 9

8 7

6 oe J

.9

.e 0

I-0 0

4:

4-4-

(

.1

,~

/

.9 5

4 3

2 0

I,,

I-.

Z-x 0

I 2

3 4

5 6

7 8

9 10 Ii 12 13 14 15 STATION 7

SULFATE ION CONCENTRATION (MG/L)

REGRESSION EQUATION (y=.96+.927x)

.95%

CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 0

VERMONT YANKEE CLOSED CYCLE OR NOT OPERATING, 1980 0

FIGURE 4.6 COMPARISON OF OBSERVED STATION 3 CHLORIDE ION CONCENTRATIONS WITH STATION 3 CONCENTRATIONS PREDICTED FROM PREOPERATIONAL/CLOSED, CYCLE DATA, STATIONS 7 AND.3, 1967 74 y

15 14 13 12 4

0 z

0 0

10 9

.000 z

in 8

7 6

5 4

3 2

0 V..

I.

V.-

V..

a 0

x 0

I 2

3 4

5 6

7 8

9 10 II 12 13

14.

15 STATION 7

CHLORIDE ION CONCENTRATION (MG/L)

REGRESSION EOUATION (y=1.1-.795x)

.95'% CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 VERMONT YANKEE CLOSED CYCLE OR NOT OPERATING, 1980 0

FIGURE 4.7 I

I COMPARISON OF OBSERVED STATION 3 ALKALINITY CONCENTRATIONS WITH STATION 3 CONCENTRATIONS PREDICTED FROM PREOPERATIONAL/CLOSED CYCLE DATA, STATIONS 7 AND 3, 1967-74 y

-50

,1

,1

-I 4-I

,J 40 le J-1 el

-a

-S C,

I-z

3 4

-J 4

to z0 9.-

V) 30 20

/

4-4-(

de I,1 I0 x

0 30 20 30 40 50 STATION 7

ALKALINITY (MG/L)

REGRESSION EOUATION (y: 4.9+.844x)

" 95% CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 VERMONT YANKEE CLOSED CYCLE OR NOT OPERATING, 0

0 1980 FIGURE 4.8 TABLE 4.1-1 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 JANUARY 1980 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum 3

.3 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17

.18 19 20 21 22 23 24 25 26 27 28 29 30 31 13.1 13.1 13.2 13.2 13.3 13.4 13.4 13.4 13.2 13.1 13.0 13.1 13.2 13.3 13.3 13.2 13.0 13.2 13.2 13.2 13.2 13.1 12.8 12.8 12.8 12.8 12.8 13.0 13.0 13.2 13.3 0000 2130 2300 0600 0600 0130 2030 0000 0000 1030 1630 2300 0000 2130 1700 0100 2400 0730 0300 1730 0200 0000 1700 1930

.2300 2200 0300 1830 1300 2100 0130 12.5 12.5 12.5 12.8 13.0 12.9 12.6 12.8 12.6 12.6 12.4 12.8 12.7 12.8 12.8 12.8 12.8 13.0 13.0 12.5 12.6 12.6 12.3 12.4 12.4 12.3 12.3 12.4 12.5 12.5

.12.8 0900 0900 0800 0800 0530 1900 0730 0800 0930 0930 0830'

.0400 0930 0800 0900 2330 1730 2230 2400 1030 0830 0830 0830 0600 0830 1830 2400 0230 0900 0930 0800 12.9 12.9 13.0 13.1 13.2 13.2 13.2 13.2 13.1 12.9 12.8 13.0 13.0 13.1 13.1 13.0 12.9 13.1

.13.1 13.0 13.0 12.9 12.6 12.6 12.6 12.6 12.6 12.7 12.8 12.9.

13.1 7.6.

7.6 7.7 7.7 7.6 7.6 7.6 7.7 7.7 7.6 7.5 7.5 7.6 7.6.

7.5 7.6 7.6 7.5 7.6 7.5 7.6 7.7 Sensor 7.6 7.5 7.5 7.5 Sensor 7.3 7.3 7.4 7.4 7.4 7.3 7.5 7.4 7.5 7.3 7.3 7.3 7.4 7.5

.7.4 7.3 7.3 7.2 7.4 7.4 7.3 7.5 Inoperative 7.5 7.2 7.1 7.3 Inoperative I,

if

TABLE 4.1-2 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 FEBRUARY 1980 DISSOLVED OXYGEN'(MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 2.4 25 26 27 28 29 13.3 13.1i 13.3 13.3 13.2 13.1 13.3 13.3 12.9 12.9 13.0 13.1 13.0 13.1 13.0 12.7 12.5 12.4 13.0 13.1 13.0 12.6 12.6 12.3 12.4 12.4 12.7 12.6 12.9 1230 1930

,1430 1830 0400 1600 2030 0200 oi30 2200 2000 2100 0130 0430 0200 0000 0300 0500 2100 2130 0200 0630 1730 0200 2200 0300 2300 0000 2230 13.1" 13.0 13.1 13.1 12.7 12.6 12.4 12.5 12.3 12.3 12.4 12.4 12.6 12.6 12.6 12.4 12.1 12.2 12.2 12.5 12.2 12.4 12.2 11.9 12.0 12.0 12.0 12.3 12.2 2400 0900 0260 0700 1830 0830 0800 093o

-1730 1730 1030 1130 1130 1300 1500 2400 2100 2200 1300 1600 1730 0100 2130 2030 0900 1100 1100 0900

.1600 13.2 13.1 13.2 13.2 13.1 12.9 12.9 13.0 12.6 12.6 12.7 12.7 12.8 12.8 12.7 12.5 12.3 12.3 12.5 12.8 12.6 12.5 12.4 12.1 12.2 12.2 12.3 12.5 12.6 Sensor of if It i'

7.4 7.4 7.4 7.5 7.5 7.5 7.5 7.4 7.4 7.5 7.5 7.4 7.5 7.5 7.4 7.4 7.4 7.4 7.4 7.5 7.5 7.5 Inoperative to t1 It 7.2 7.2 7.2 7.2 7.2 7.3 7.3 7.2 7.3 7.3 7.2 7.2 7.3 7.3 7.3 7.3 7.3 7.2 7.3 7.3 7.3 7.2

.I TABLE 4.1-3 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3.

MARCH 1980 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum 1

2 3

45 6

7

.9 91.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 12;.9 12.2 12,7 12.8 12.8 12.7 12.8 12.6 12.3 12,5 12.5 12.5 12.5 12.3 12..2 12.0 12,2 13..3 13.2 13.3 13,.4 13.7 V3.4 13,2 13,3 13.,.5 13.3 13.1 13.0 13.-2 13.3 0000 130o 2300 2300 0100 0130 0200 0000 0200 2300 0200 2300 0000 2230 0230 0230 2400 2100 0930 0403 240Q 1830 1030 0930 1530 0130 1430 11400.

1500 1300 013 0

.12.2 12.0 12.0 12,3 12.2 12.-1 12.2 11.9 11,7 11.7 12,0 11.8 11.8 11,8 11.8 11.4 11.4 12.2 12.8 12.8 12.8 13.4 12,9

.12.9 13.0 12.9 12.5 12..5 12.6 13.0 12.9 2400 2100 0700 1200 1100 1130 1900 2000 1930 1530 1700 1730 1730 1530 1930 2300 0530 0830 1900 1700 0830 2400 2400 0600 0300 1930 2300 2200 0000 05 00.

1630 12.5 12.1 12.2 12.5 12.6 12.4 12.5 12.3 12.1 12.1 12 3 12.2 12.2 12.1 12.0 11.7 11.7 12.6 13.0 13.0 13.0 13.5 13.2 13.0 13.1 13.2 12.9 12.7 12.8 13-.1 13.1 7.5 7.3 7A4 7.4 7.4 7.4 7.4 7.3 7.4 7.4 7.4 7.3 7.4 7.3 7.4 7.5 7.3 7.3 7.3 7.4 7.3 7.3 7.3 7.3 7.4 7.4 7.5 7.5 7.5 7.5

-7.'5 7.2 7.1 7.1 7.2 7.3 7.2 7.2 7.2 7.2 7.1 7.3 7.1 7.1 7.2 7.2 7.2 7.2 7.2 7.0 7.1 7.2 7.1 7.1 7.1 7.2 7.3 7.3 7.3 7.3 7.4 7,4 2

SI

.¶ -.

t.....4

TABLE 4.1-4 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 APRIL 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum

-J

.,J 1.

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20.

21 22 23 24 25 26 27 28 29 30 13.3 13.1 13.1 12.9 13.1 13.2 12.8 12.4 12.4 13.7 13.9 13.9 13.8 13.7 13.3 12.9 12.9 12.9 12.7 12.4 12.0 11.9 11.4 11.4 11.4 11.3 11.1 11.5 11.7 11.7 0000 0000 0630 2300 1830.

0200 0000 0000 1430 2400 29000 1200 0100 0130 0030 1100 0800 0130 0000 0000 0000 0000 2030 0100 1230 0900 2400 2400 2400 0200 12.7 12.7 12.7 12.6 12.9 12.8 12.4 12.1 12.1 12.1 13.7 13.7 13.6 13.4 12.8 12.7 12.7 12.7 12.4 12.0 11.8 10.8 11.2 11.1 11.1 11.1 10.8 11.0 11.4 11.5 1630 2400 2330 0800 0200 2400 2300 2130 2400 0000 0000 0530 1900 2100 2300 2200 1500 2000 2100 2400 1300 1900 0600 2300 0330 2400

.1200 0600 0900

.0800 13.0 12.9 12.9 12.7 13.0 13.0 12.6 12.2 12.3 13.0 13.8 13.8 13.7 13.5 13.0 12.8 12.8 12.8 12.4 12.2 11.9 11.4 11.3 11i.2 11.2 11.2 10.9 11.2 11.5.

11.6 7.6 7.5 7.4 7.4 7.6 7.6 7.5 7.4 7.4 7.4 7.5 7.6 7.5 7.6 7.4 7.4 7.4 7.4 7.4 7.4 7.3 7.3 7.3 7.4 7.4 7.3 7.4 7.5 7.4 7.4 7,3 7.3 7.2

.7.3 7.4 7.3 7.3 7.3 7.3 7.2 7.3 7.3 7.3 7.3 7.2 7.3 7.3 7.2 7.2 7.2 7.1 7.1 7.2 7.2 7.2 7.2 7.2 7.3 7.3 7.2

TABLE 4.1-5 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 MAY 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum 230 I

I 1

2 3

45 6

7 8

9 I1 11 12 13 14 15 16 17 1f8 19 20 21 22 23 24 25 26 27 28 29 30 31 ii,7 11,7 11,4 11.1 1O0,7 10.2 i0*i 9.8 10.0 IQ" 3 10.3 10.3 10.4 103.G 10.0 10,0 10.0 10.0 I0,0 9.8 9.7 9.6 9.8 9,7 9.. 5 9.,5 9..3 9.3 9.4 9.0 0000 0630 0630 0000 O0 0000 0000 2400 1630 2100 0900 0400 0300 Ql00 1800 2230 0130 1430 1700 1630 0000 2100 0000 2 GOO 1600 1600 2100 2130 1600 130.0 1730

,11 -A 11A4 10.6 10.2 9.9 9 *.7.

9.5.

905 10.0 10.1 1012 10.-1 9.9 947 9,7 9 "8 9.8 9,6 9s5 9'5 9.4 9.3 9.3 9,2 9.1 9,0 8.9 8.9 8.-9 8,7 23'00 2400 2000" 2400:%

0930 1600 2400 0000 0000 1030 2200 1300 1900 1200 1100 0130 2230 2400 0600 0430 1300 0500 0800 0930 0700 2400 0600 0600 0600 2400 2400 11.5 11.2 10.8 10.4.

10.1 9.9 9.6 9.8 10.1 10.2 10,3 10,2 10.0 9.8 9.9 9.9 9,9 9.8 9.6 9.6 9.5 9.6 9.5 9.3 9.3 9.1 9.1 9.1 9,2 9.0 8.9 7.4 7.4 7.4 7.3 7.3 7.4 7.3 7.3 7.4 7.5 7.4 7.6 7.5 7.4 7.4' 7.5 7.5 7.4 7.5 7.6 7.5 7.8 7.9 7.8 7.8 7.7 7.7 7.7 7.8 7.7 7.7 7.2 7.2 7.2 7.1 7.1 7.2 7.2 7.2 7.3 7.3 7.3 7.3..

7.4 7.3 7.3 7.3 7.2 7.2 7.3 7.2 7.3 7.4 7.4 7.4 7.4 7.5 7.4 7.4 7.4 7.4 7.3 I

L....

i... :...

TABLE 4.1-6 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO. 3

.JUNE 1980 DISSOLVED OXYGEN (MG/L) p Day Maximum Time Minimum Time Mean Maximum Minimum U1I 1

2 3

4 5.

6 7,

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

-27 28 29 30 9.1 9.6 9.3 9.0 8.9 8.8 8.4 8.2 8.4 8.3 8.5 8.8 9.1 9.5 9.6 9.4 9.1 8.9 8.9 8.8 8.6 8.5 8.8 1700 1630 1500 1300 1900 0000 0000 0000 1630 2100 1900 1630 1930 2030 0000 0000 1700 0000 1830 1800 1630 2230 1930 8.7 0530 8.9 0600 8.8 2400 8.5 2400 8.4 0800 8.4 2400 8.1 2230 7.9 1300 7.8 0630 7.9 0500 8.1 0430 8.3 0500 8.7 0500 8.9 0500 9.4 2400 9.0 2400 8.8 1230 8'.5 2400 8.3 0500 8.4 0730 8.3 2300 8.0 0730 8.3 0330 No Valid Data II Is it it it 8.9 9.3 9.1 8.8 8.6 8.6 8.2 8.0 8.1 8.1 8.3 8.6 8.9 9.2 9.5 9.2 8.9 8.7 8.6 8.6 8.4 8.3 8.6 7.9 8.3 7.9 7.7 7.8 7.6 7.4 7.4 7.4 7.4 7.4 7.6 7.8 8.1 7.9 8.1 8.0 7.8 7.9 7.5 7.5 7.6 7.7 7.9 8.0 7.9 8.0 7.9 7.6 7.5 7.5 7.7 7.5 7.4 7.4 7.4 7.2 7.2 7.2 7.2 7.3 7.2 7.3 7.4 7.6 7.7 7.6 7.5 7.4 7.3 7.3 7.2 7.3 7.3 7.4 7.5 7.6 7.5 7.4 7.3 8.6 8.5 8.1 8.0 1630 1530 0000 0000 7.8

.7.9 7.9 7.4 0900 0700 2000 1100 8.2 8.3 8.0 7.6

TABLE 4.1-7 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 JULY 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum 0I

• 1*

2 3

4 5

6 7

8 9

10 11 12 13 14 15

'16 17 18 19 20 21 22 23 24 25 26.

27 28 29 30 31 7,7 7.7 8.0 8.6 8.4 8.5 8.8 8.5 8,4 8.3 7.8 7.9 7.8 8.0 7.7 7.9 7,8 8.1 8.0 7,3.

7.8 7,5 6.4 6.4 6.4 6.8 6,9 6.5 6.1 6.2 6.6 1830 1800 1900 2200 1600 1500 1900 0000 1900 1600 1830 1830 1700 1900 0000 1930 1830 1830 1630 0000 1930

.0000 1330 1800 1900 1930

.1530 1600 1530 1800 1830 7.0 0630 7,0 0800 7.-3 0700 7.5 2230 8.1 2400 7.7 0700 7.8 0630 7.9 2400 7.6 0700 7.7 2400 7.4 0600 7.1 0600 7.4 0700 7.2 0700 7.1 2400 6,5 0730 7,2 0.730 7.2 0700 7.3 2400 6.9:

0730 6.7 0730

.6.3 2400 6.1 2400 5.9 0600 5.9 0600 6.2 0630 6.2 2030 6.0 2400 5.7 0730 5.7 0500 5.9 0700 7.4 7.4 7.7 8.1 8.2

.8.2 8.3 8,2 8.0 8.0 7.6 7.5 7.6 7.6 7.4 7.2.

7.5 7.6 7.7 7.0 7.3 6.:6 6.2 6.2 6.2 6.5 6.5 6.3 5.9!

5.9 6.2 7.6 7.5 7.7 8.0 7.9 7.8

.8.1 7,8 7.8 7.7 7.7 7.6 7.6 7.8 7.6 7.9 7.8 7.8 7.6 7.5 7.7 7.5 7.2 7.2 7.2 7.2 7.3 7,3 7.1 7.3 7.3 7.3 7.2 7.3 7.4 7.6 7.4 7.4 7.5 7.4 7.4 7.3 7.2 7.4 7.3 7.3 7.2 7.4 7.3 7.3 7.2 7.2 7.1 7.0 6.9 6.8 6.9 6.9 7.0 7.0 7.0 7.0

.~.

~

I.

TABLE 4.1-8" DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 AUGUST 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum

-4

-I 1l 2.

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 2'5 26 27 28 29 30 31 6.6 6.8 6.9 1330 1730 2400 Pump it 6.2 6.1 6.2 In'operative Io

'I

'I I'

2400 0730 0730 11 It 7.5

.7.4 7.1 6.8 6.8 6.9 7.4 7.1 1700 2130 0000 1900 1400 2400 1830 0000 6.4 6.5 6.5 6.9 7.0 6.6 6.5 6.4 6.5 6.8 6.8 0700 0600 2400 0600 0730 1300 0000 0800 Pump Inoperative It it 7.3 6.6 6.6 6.7 6.9 7.4 7.4 7.5 7.0 7.2 7.4 7.8 7.7 1200 1730 1800 1800 2230 2100 1700 1800 0000 1630 1730 1630

.1730 6.6 6.2 6.2 6.2 6.3 6.8

• 6.8 6.9 6.5 6.7 6.8 7.0 7.4 2400 0830 0600 0800 0530 0300 0730 0730 0900 0830 0830 0630 0630 7.2 7.2 6.9 6.6 6.6 6.6 7.1 7.0 7.0 6.4 6.4 6.4 6.6 7.1 7.1 7.2 6.7 7.0 7.1 7.4 7.6 7.3 7.3 7.2 Pump I,

ft 7.4 7.2 7.1 7.1 7.1 7.1 7.3 7.1 Pump if 7.3 7.2 7.2 7.3 7.5 7.7 7.6 7.5 7.4 7.2 7.2 7.4 7.4 7.0 7.0 7.0 Inoperative H

I, 7.1 7.0 6.9 6.9 6.9 7.0 6.9 6.9 Inoperative 7I.

7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.1 7.0 7.0 7.0 7.0 7.1

TABLE 4.1-9 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 SEPTEMBER 1980 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum 1

2 3

4 5

6 7

8 9,

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 8.0 1430 8.0 7.9 7.9 7.6 7.5 7.7 7.9 1230 150C 0000 0000 000C 163C 163(

7.5 Pump Inoperative It go II 1W 7.6 7.4 7.6 7.5 7.3 7.1 7.4 Pump Inoperative It It II 1

II

.If to 111 It II If it 0630 0600 2400 2400 2230 2400 0530 0700 7.7 7.8 7.7 7.8 7.6 7.4 7.4 7.6 7.5.

Pump ofIt II

'I I,

WY 7.4 7.4 7.5 7.3 7.4 7.2 7.4 Pump of It if of of it WI Yr WY SW WY 7.2 Inoperative

-01 tI

'I it n

W.

7.0 7.0 7.2 7.2 7.2 7.1 7.1 Inoperative of If It II WI

'I

r7_

97

7.

l.1 N7.1,1111.

TABLE 4.1-10 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 OCTOBER 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum 1

2 3

4 5

6 7.

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Pump Inoperative of of 9.2 9.1 9.2 9.0.

9.0 9.2 9.1 8.9 8.8 8.9 9.0 9.2 9.1 9.2 9.4 9.4 9.4 9.6 9.6 9.8 10.0 10.1 10.3 10.4 10.4 10.5 10.6 10.9 10.9 1430 1830 1600 0000 1600 1130 1630 1800 0100 1900 2000 1900 0300 1100 1430 1330 1900 1900 1900 1730 1530 2400 1730 1500 1500 2400 2400 2400 0000 8.8 8.7 8.8 8.7 8.4 8.8 8.7 8.7 8.6 8.6 8.7 8.8 8.9 9.1 9.2 9.2 9.2 9.3 9.5 9.4 9.6 9.8 10.1 10.1 10.2 10.2 10.4 10.5 10.7 2400 0400 0630 2400 0600 0230 0500 0600 1900 0700 0600 0600 1300 0530 0100 0730 0700 0530 0500 0500 0600 0700 0200 0630 0400 0100 1500 0500 1600 9.0 8.9 9.0 8.9 8.7 9.0 8.9 8.8 8.7 8.8 8.8 9.0 9.0 9.1 9.3 9.3 9.3 9.4 9.6 9.6 9.8 9.9 10.2 10.2 10.3 10.3 10.5 10.7 10.8 Pump I,

7.5 7.5 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.4 7.3 7.3 7.4 7.3 7.2 7.2 7.4 7.4 7.3 7.2 7.3 7.3 7.4 7.3 Inoperative

'S 7.2 7.3 7.2 7.2 7.2 7.2 7.2 7.3 7.2 7.2 7.3 7.3 7.3 7.3 7.2 7.2 7.2 7.3 7.1 7.1 7.1 7.1 7.2 7.2 7.1

.7.2 7.1 7.2 7.1

TABLE 4.1-11 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION'NO.

3 NOVEMBER 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum 0co 1

2 3

4 5

6 7.

8 9

10 ii 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 10.8 10.9 10.9 11.2 11.2 11.2 1110 11.3 11,2 11.1 11.4 11.7 11.8 11.7 11.9

• 11.9 12.0 12.3 12.5 12.4 12,7 12.8 12.9 12.8 12.8 12.8 13.0 12.9 12.9 13.0 0130 2400 0000 2400

.1500 1100 0000 2000 0000 2300 2330 1400 1900 0000 2000 0200 1130 2400 0400

-1430 2230 1530 1400 0000 2000 2400 1100 0300 0130 2100 10.6 10.6 10.7.

10.9 11i.1 11.0 10.9 11.0 10.9 10.9 111i 11.4 11.6 11.6 11,6 11.7 11.9 11.9 12.3 12.3 12.3 12.6 12.7 12.5 "12.4 12.5 12.8 12.7 12.7 12.8 2230 0530 1600 0830 0600 2400 1600 0100 2400 0700 0300 0300 0230 1300 0700 1230 2230 0000 2400 0730 0230 0430 0100 1900 0900 0800 2200 1530 1230 1000 10.7 10.8 10.8 11.0 11.2 11.1 11.0 11.1 1.1.1 11.0 11.2 11.5 11.7 11.7

• 11.7 11.8 12.0 12.1 12.4 "12.3 12.5 12.7 12.8 12.7 12.6 12.6 12.9 12.8 12.8 12.9 7.3 7.3 7.3 7.3 7.3 7.3 7.3 7.4 7.4 7.3

-7.4 7.5 7.5 7.5 7.4 7.5 7.5 7.5 7.5 7.4 7.3 7.4 7.4 7.3 7.3 7.3 7.5 7.4 7.4 7.3 7.2 7.1 7.1 7.1 7.2 7.1 7.1 7.2 7.2 7.2 7.2 7.3 7.4 7.3 7.3 7.3 7.3 7.3 7.3 7.2 7.1 7.2 7.3 7.2 7.2 7.1 7.3 7.3 7.2 7.2

.~*

• ~

F M9 Is if TABLE 4.1-12 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

3 DECEMBER 1980 DISSOLVED OXYGEN (MG/L) pH

.Day Maximum Time Minimum Time Mean Maximum Minimum Ico 0,

1

• 2 3

4 5

6 7

8 9

10 11.

12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 13.0 13.0 12.9 13.1 13.3 13.3 13.2 13.1 13.1 131.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.0 13.2 13.2 13.0 13.1 13i2 13.0 13.4 13.1 13.2 13.3 1430 1300 1000 1400 1300 1430 0000 0130 0830 2300 0100 2200 0200 1000 1500 2200 0800 2130 2300 1030 2100 2400 0930 1400 2330 1400 2400 1400 12.7 12.8 12.7 12.7 12.9 13.1 13.0 12.9 12.9 13.0 13.1 13.0 13.0 13.0 13.0 13.0 12.9 12.8 12.8 12.9 12.9 13.0 12.9 12.9 12.9 13.0 13.0 13.1 0330 2400 2400 0000 0000 0330 1800 1300 1600 1030 2300 5030 1230 2330 0900 1500 2330 1100 0500 2330 0630 0600 2400 0600 0700 0600 9000 0100 12.8 1"2.9 12.8 12.9 13.1 13.2 13.1 13.0 13.0 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 12.9 13.0 13.1 13.0 13.0 13.1 12.9 13.0 13.1 13.1 13.2 7.3 7.4 7.2 7.2 7.2 7.2 7.2 7.1 7.2 7.2 7.3 7.3 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.3 7.2 7.2 7.0 7.1 7.1 7.1 7.0 7'0 Pump T$

ii 7.1 7.1 7.0 7.0 7.1 7.1 7.0 7.0 7.0 7.0 7.1 7.1 7.1 7.0 7.0 7.1 7.0 7.0 7.0 7.0 6.9 7.0 6.9 6.9 6.9 7.0 6.9 6.9 Inoperative F,

'I Pump Inoperative it It is to

TABLE 4.2-1 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 JANUARY 1980 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum Ico 1

2 3

4 5

6 7

.8 9

10 11, 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 13.3 13.4 13.5 13.5 13.4

.13.5 13.7 13.8 13.7

.13.7 13.6 13.7 13.7 13.7 13.7 13.5 13.7 13.7 13.6 13.5 13.5 13.6 13.4 13.3 13.5 13.6 13.6 13.5 13.5 13.6 13.5 2130 1630.

0230

.1630 0000 2200 1200 1930 0000 1330 0900 0900 2400 1530 0000 0000 2400 2000 1900 0000 2400 0530 0000 1230 2400 1830 0000 0200 1630 0500 2030 13.1 13.2 13.4 13.3 13.3 13.4 13.5 13.6 13.6 13.6 13.5 13.5 13.4 13.6 13.5 13.3 13.3 13.6 13.5 13.3 13.3 13.4 13.2 13.1 13.2 13.5 13.4 13.0 13.3 13.3 13.3 0430 0030 2100 1400 1300 0600 2200 0200 2400 0400 1530 2400 0930 0630 2400 1600 0000 0400 0500 1930 1900 1700 2030 1900 0100 0400 2400 2400 0900 2300 1000 13.2 13.3 13.4 13.4 13.4 13.5 13.6 13.7 13.7 13.6 13.6 13.7 13.6 13.7 13.6 13.4 13.5 13.6 13.6 13.4 13.4 13.5 13.3 13.2 13.4 13.5 13.5 13.3 13.4 13.5 13.4 7.2 7.3 7.3 7.3 7.2 7.2 7.3

7. 3 7.2 7.2 7.2 7.2 7.3 7.3 7.2 7.2 7.2 7.2 7.2

.7.2 7.3 7.2 7.2 7.2 7.3 7.2 7.2 7.2 7.1 7.1 7.1 7.1 7.2 7.2 7.2 7.1 7.2 7.2 7.1 7.1 7.1 7.1 7.1 7.2 7.2 7.1 7.1 7.0 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.0 7.0 7.0

%...~-........-a

W?,09 1:771 r-'747, rýM' Fx!m rl--."j r"-j

..m PIP rlrl'ý'l TABLE 4,2-2 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 FEBRUARY 1980 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Time Minimum Time Mean Maximum Minimum

.Ico 1~

2 3

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24.

25 26 27 28 29 13.7 19.00 13.6 2400 13.7 0600 13.7 1630 13.8 2100 13.8 1330 13.7 0100 13.6 2100.

13.6 0000 13.4 1230 13.5 2200 13.7 1800 13.7 1800 13.7 0600 13.5 2400

.13.5 1000 13.4 2300 13o4 2300 13.5 1530 13.6 2400 13.7 1300 13.5 0000 13.5 0600 13.5 2400 13.7 0900 13.5.

0000 13.4 1530 13.4 1500 13.3 0000 13.4 13.5 13.6 13.5 13.5 13.6 13.3 13.3 13.3 13.3 13.1 13.5 13.5 1:3.5 13.4 13.3 13.2 13.2 13.2.

13.3....

13.5 13.3 13.3 13.3 13.3 13.3 13.3 13.3 13.1 0300 0700 2400 0400 0930 2230 1900 0830 1000 2400 0900 1000 0800 2400 1000 2400 1130 0330 0300 0000 2400 2000 2230 0000 2000 2400 2130 2400 2200 1-3.5 13.6

.13.6 13.6 13.6 13.7 13.5 13.5 13.4 13.3 13.3 13.6 13.6 13.6 13.5 13.4 13.3 13.3 13.3 13.5 13.6 13.4 13.4 13.4 13.5 13.,4 13.4 13.4 13.2 7..1 7.1 7.2 7.2 7.2 7.1 7.1 7.1 7.1 7.1 7.1 7.2 7.2 7.2 7.2 7.1 7.1 7.1 7.1 7.1 7..1 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.0 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.1 7.1 7.0.

7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0

TABLE 4.2-3 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 MARCH 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum I0w I

2 3

45 6

7 8

9 io 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 13.2 13.1 13.1 13.2.

13.4 13.4 12.9 12.8 12.7 13.0 13.0 12.9 12.8 13.0 13.3 13.3 13.3 13.4 13.7 13.7 13.4 13.3 13.0 13.1 13.0 12.8 13.0 13.1 0400 1730 2400 0200 2200 0000.

1330 0600 1030 1200 0200 0800 0000 2400 1600 2100 0900 1900 1130 0500 1530 2200 2000 2300 0000 2400 2300 0500 13.0 13.0 12.9 13.0 13.0 12.8 12-.6 12.5 12.5 No Valid Data I,

I9 II of toio 2400 0830 0600 2000 0000 2400 2330 2230 0000 12.8 12'.8 12.8 12.7 12.8 13.0 12.9 12.9 13.1 13.4 13.1 13-.1 13.1 12.8 12.9 12.6 12.6 12.8 12.7 13.1 13.0 13.10 13.1 13.2 13.1 12.8 12.7 12.6 0700 2400 2400 2400 1300 0300 1200 2400 0900 0000 2400 0000 0700 0800 1030 2400 0000 1600 2400 12.9 12.9 12.9 12.8 12.9 13.1 13ý1 13.1 13.3 13.6 13.4 13.3 13.2 12.9 13.0 1.2.8 12.7 12.9 12.9 7.0 7.1 7.1 7.2 7.1 7.1 7.0 7.0 7.0 7.1 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.0 7.1 7.0 7.0 6.9 7.0 7.0 7.0 7.0 7.1 7.1

.7.1 7.1 7.1 7.0 7.0 7.0 7.1 7.0 7.0 6.9 7.0 7.0 7.0 6.9 6.9 6.9 7.0 7.0 7.0 6.9 6.-9 6.9 7.0 6.8 6.8 6.9 6.9 6.9 6.9 7.0 7.0 7.0 7.0 7.0

W.

MI rI F".

Ke.l

.N3 rl-j*,.

P~q I

• I TABLE 4.2-4.

DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO. 7 APRIL 1980 DISSOLVED OXYGEN (MG/L).

Day Maximum Time Minimum Time Mean Maximum Minimum Ico

.0, U,

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

• 28 29 30 12.9 12.9 12.8 12.6 12.9, 13.1 12.8 12.5 12.4 13.0 13.2 12.9 12.8 12.7 12.6 12.5 12.8 12.8 12.6 12.2 12.1 11.6 11.5 11.2 11.2 11.1 10.9 11.4 11.6 11.6 2400 1530 0000 2400 2400 0930 1600 1630 0000 2400 0900 0000 0900 0730 0230 2400 1400 0900 0830 0100 0930 0600 1030 0000 "0600 0000 0100 2400 1700 1100 12.7 12.8 12.3 12.2 12.6 12.6 12.4 12.3 12.3 12.2 12.9 12.5 12.6 12-.5 12.1 12.2 12.5 12.5 12.2 11.8 11.4 11.4 11.2 11.0 10.9 10.8 10.7 10.8 11.4 11.4 0000 0800 2230 0430 1100 2400 2400 0900 2400 0200 2200 2400 0000 2400 1630 1130 0000 2400 2400 2400 2400 2400 2230 2300 1800 2400 1500 0400 0500 2200 12.8.

12.9 12.A 12.4 12.8 12.9 12.6 12.4 12.4 12-*7 13.0 12.7 12.7 12.6 12.4 12.3 12.7 12.6 12.4 12.0 11.7 11..5 11.3 11.1 11.1 11.0 10.8 11.1

.11 6 11.5 7.1 7.1 7.0 7.0 7.1 7.1 7.1 7.0 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.2 7.2 7.2 7.2 7.2 7.3 7.2 7.1 7.0 7.0 7.0 6.9 6.9 7.0 7.0 6.9 7.0 6.8" 6.9 6.9 6.9 6.9 6.9

• 6.9 7.0 7.0 7.0 7.0 6.9 6.9 7.1 7.1-7.1 7.0 7.1 7.1 7.0 7.0

TABLE 4.2-5 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.: 7 MAY 1980 I"

o0 DISSOLVED OXYGEN (MG/L)

PH Day Maximum Tiue Minimum Time Mean iMaximum Minimum 1

2 3

4 5

6 7

8 9

.10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 11.5 11.3' 10.8 10.5 10.3 10.1 9.8 10.0 10.3 10.5.

10.7

• 10.6 10.5 10.3 10.1 10.1 9.9 9.8 9.8 9.7 9.7 9.9 9.6 9.6 9.5 9.5 9.4 9.3 9.2 9.6 9,7 0000 0400 0130 0000 1100 0000 0000 2100 1830 2400 0600 0000 1200 0000 2200 0000 1000 2400

.0000 0000 1430 1200 1130 1200.

1530 2100 0000 1930 0000 2400 2400 11.2 10.8 10.5 10.1

.10.. 1 9.8 9.6 9.7 9.9 10.3 10.6 10.4 10.3 10.0 9.9 9.9 9.7 9.5 9.5 9.4 9.4 9.5 9.4 9.3 9..0 9.3 9.0 9.0 8.8 8.8 9.3 2400 1830 2400 2400 2400 2400 1800 0100 QO000 0000 2400 2400 2400 2400 1700 2400 2400 1400 1800

.2100 0400 0000 2400 2400 0900 0000 1100 1130 2100 0500 1130 11.3 114.0 10.6 10.3 10.2 9.9 9.37 9.8 10.1 10.4 10.6 10.5 10.4 10.1 10.0 10.0 9.8 9.7 9.7 9.5 9.5 9.7 9.5 9.4 9.2 9.4 9.2 9..2 9.0 9.1 9.5 7.1 7.0 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.2 7.1 7.2 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.2 7.2 7.2 7.3 7.3 7.4 7.4 7.4 7.4 7.4 No 7.0 6.9 6.9 6.9 6.9 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0.

7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.2 7.1 7.2 7.2 7.2 7.2 Valid Data ti It

TABLE 4.2-6 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 JUNE 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum co

• I 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 9.5 9.2 9.0 8.7 8.7 8.7 8.8 8.7 8.8 9.0 9.4 9.8 9.6 9.6 9.9 9.8 9.5 9.1 No Valid Data 1630 9.1 0200 8.9 0000 8.4 1700 8.4 2200 8.2 1000 8.4 1930 8.3 0700 8.4 2100 8.4 1300 8.6 2400 8.9 1730 9.4 0100 9.2.

0400 9.1 2230 9.4 0130 9.4 0100 9.1 0000 8.4 Pump Inoperative Io 11 1200 1700 2400 2400 0630 2400 0700 2400 0000 0130 0500 0300 2330 2030 0200 1700

.2400 2030 9.3 9.0 8.6 8.6 8.4 8.6 8.5 8.5 8.6 8.8 9.1 9.6

.9.4 9.4 9.6 9.6 9.3 8.8 No Valid Data Io It Io 7.5 7.4 7.4 7.2 7.4 7.2 7.3 7.0 7.3 7.1 7.3 7.1.

7.3 7.1 7.2 7.1 7.5 7.2 7.5 7.2 7.7 7.3 7.8 7.6 7.8 7.5 7.7 7.4 7.6 7.4 7.5 7.4 No Valid Data Pump Inoperative I1 II It

'I if II It 11 91

'I

'I 8.2 7.8 7.7 7.7 1730 0000 0000 2300 No Valid Data 7.8 7.2 7.4 7.4 2400 2400 1400 0830 8.0 7.5 7.5 7.5 7.5 7.5 7.4 7.3 7.3 7.2 7.3 7.2 7.2 7.2

TABLE 4.2-7 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO. 7 JULY 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum.

Time Minimum Time Mean Maximum Minimum I

co I

1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 7.8 7.8 7.8 7.6 2330 7.3 1930 7.3 1730 7.2 0130 7.2 Pump.noperative It of 1300 1130 1230 1130 if I,

7.9 7.4 7.6 7.3 7.5 7.0 6.9 7.0 1800 1900 1600 2400 1830 2200 2030 1730 It

.7.3 7.0

6-9 6.7

.6.8 6.5 6.0 6.,4-1300 1030 0900 1830 1230 1300 1030 0800 7.6 7.2 7.2 7.1 7.2 6.8 6.4 6.7 7.6 7.6.

7.5 7.4 7.3 7.1 7.4 7.2 7.4 7.3 7.3 7.2 Pump Inoperative if 1I

• II/

1 7.4 7.1 7.3 7.2 7.3 7.1 7.2 7.0 7.3 7.1 7.2 6.9 7.3 7.0 7.3 7.1 7.3 7.0 7.2 6.9 7.2 6.9 7.2 7.0 7.2 7.0 7.1 7.0 7.1 6.9 7.0 6.9 7.0 6.9 7.0 6.9 7.0.

6.9 7.1 6.9 7.1

'7..0 7.0

.6.9 7.1 6.9 No Valid Data Ii I?

ti II 11 i1 t t

Is 6.2.

6.0 6.2 5.7 5.6 5.6 6.2 6.1 6.2 6.1 0000 0000 2000 0000 0830 1730 1430 1300

,1830 0000 5.6 5.3 5.4 5.1 4.9 4.9 5.2 5.7 5.6

.5.9 1400 2230 1330 1230 2100 0100 0730 2400 1000 1930 6.0 5.7 5.8 5.4 5.3 5.3 5.7 5.9

.5.9 6.0

~

r--

• ~ **.-~-*1

~

~

• .~

r:77.7711 ff, V-551-711, r;1-11,1--57-111 Fý' I M IMI) -, ko

-1,

ý 1, M..,-ý'l F4,09,.P" TABLE 4.2-8 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 AUGUST 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum I

Co 1

2 3

4 5

6 7

8 9.

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 6.4 6.1 6.1 6.4 6.4 6.5 6,6 6.8 6.2 6.0 6.1 6.0 6.4 6.6 6.2 6.3 6.3 6.7 7.0 7.1 7.6 7.9 7.8 7.1 1700 1900 1300 1700 1530 1700 1830 1830 2030 0200 1800 2100 2230 1530 0000 2000 0000 1330 2000 2100 1900 2330 0000 1000 5.9 5.6 5.5 5.8 5.8 5.9 6.1 6.3 5.6 5.5 5,5 5.5 5.9 6.2 5.7 6.0 5.8 5.8 6.3 6.7 6.9 7.3 7.0 6.6 1330 1100 1930 0630 0930 0330 1300 1030 0830 2400 0000 1030 0230 2400 1430 2030 2300 0200 0130 0900 0330 0630 2400 2230 6.2 5.8 5.8 6.1 6.1 6.1 6.4 6.6 5.9 5.8 5.8 5.8 6.1 6.4 5.9 6.2 6.1 6.4 6.7 6.9 7.2 7.6 7.4 6.8 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.0 7.0 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.2 7.2 7.2 7.1 7.0 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 6.9 7.0 7.0 6.9 6.9 6.9 6.9 6.9.

6.9 7.0 7.0 7.1 7.1 7.0 Recorder Inoperative it Io Recorder Inoperative 11 Is

'I

'I It

'I I'

If It I'

It I'

It of It toU,9 of to

TABLE 4.2-9 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 SEPTEMBER 1980 DISSOLVED OXYGEN (MG/L)

I pH Day Maximum Time Minimum Time Mean Maximum Minimum CD 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 3Q I,

If I!

'I I'

It I,

'I II I,

Monitor Inoperative II II 6.6 7.0 7.0 7.3 7.5 7.6 7.7 7.9 8.1 8.2 8.5 8.5 8.5 8.4 8.5 8.3 8.3 0000.

1830 1000 1700 1930 0630 1900 2400 2400 1500 2030 0200 2300 0000 0300' 19.30 2130 6.4 6.6 6.7 6.8 7.0 7.1 7.1 7.5 7.6 7.9 8.1 8.2 8.1 No Valid Data 8..2 8.2

• 8.1.

7.9

?ump inoperative He.*

1800 0030 0530 0300 0330 2300 0030 1100 1200 0630 0000 1800 1600 1200 2300 0800 0830 6.5 6.8 6.8 7.0 7.2 7.4 7.4.

7.7 7.8 8.0.

8.3 8.3 8,3

-8,.3.

8.4 8.2 8.1 Monitor Inoperative 1f II II I)

If II II it is i

7.1 7.0 7.2 7.0 7.1 7.0 7.1 7.0 7.1 7.0 7.1 7.0 7.2 7.0:

7.2 7.1 7.2 7.1 7.2 7.1 7.3 7.1 7.4 7.2 7.3 7,2 7.5 7,3 7,-4 7.3 7;.3 7.2 7,3 7,.2 7.3.--

7.2 Pump Inoperative It it it 11 if

,....~.......

S..-.......J t.&.*.

71 U

KI7 TABLE 4.2-10 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7 OCTOBER 1980 DISSOLVED OXYGEN (MG/L) p H Day maximum Time Minimum Time Mean Maximum Minimum I

• 1 2

3 4

.5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 9.0 9.1 9.0 9.0 8.9, 9.0 8.9 8.7 1900 1900 1700 2230 0000 2200 0000 0000 Sensor

'I I,

I, 8.7 0200 8;7 0700 8.6 2330 8,6 1130 8.5 1400 8,7 1530 8.5 1230 8.4 2400 Inoperative

• " I, m!

8.8 8.9 8.8 8.8 8.7 8.9 8.7 8.5 Pump Inoperative if it 9.2 9.4 1930 2400 9.0 9.1 No Valid-Data it to it 1530 0000 9.1 9.2 Pump 7.3 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.1 7.1 7.2 7.2 7.1 7.1 7.1 7.1 7.2 7.1 7.1 7.1 7.1 7.1 7.2 7.1 Inoperative 7.2 7.1 7.1 7.1 7.1 7.0 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.0 7.0 7.1 7.1 7.0 7.0 7.0 7.0 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.0 11 I#

It El II 32 9.5 9.4 9.4 9.5 9.7 9.8 9.7 10.1 10.2 10.7 10.7 1200 0000 0130 0100 1030 0200 0100 2030 1900 1900 0200 9.3 9.2 9.2 9.3 9.5 9.5 9.15 9.8 9.9 10.2 10.5 2300 2400 1400 1200 2200 2300 1030 0830 0930 0200 2100 9.4 9.3 9.3 9.4 9.6 9.7 9.6 10.0 10.1 10.5 10.6

I TABLE 4.2-11 1/4 DISSOLVED OXYGEN AND.pH DATA VERMONT YANKEE SAMPLE STATION. NO.

7 NOVEMBER 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean.

Maximum Minimum I0 1

2 3.

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 10.7 10.7 11.2 ll3 11.2 11.2 11.4 11.3 11.1 11.4 Ii[. 8 12.0 12.0 12.2 12.5 12.6 12.8 12.6 12.6 13.0 13.1 13.1 13.2 13.1 0300 0300 2400 1600 0400 0230 1630 0000 0000 2030 2400 2300 2400 0600 2230 2400 2230 1630 0230 2400 2100 0500 1200 1300 1030 16.5 10.4 10.6 11.9 11.0 10.8 10.9 11.0 10.9 10.9 11.0 11.3 11.6 11.7 11.9

.12.0 12.3 12.4 12.4 12.3 12.5 12.9 12.9 12.7 12.8 1800 1300 0000 0430 1230 1800 0000 1800 0930 0830 0400 0930 1200 1930 0230

.0130 1630 0300 1530 1100 1030 1700.

2300 2230 0000 10.6 10.5 10.9 11.2 11.1 11.0 11.2 11.1 11.0 11.2 11.2.

11.5 11.8 11.9 12.0 12.2

.12'4 12.6 12.5 12.5 12.7 13.0 13.0

.13.0 13.0 7.1 7.0 7.1 7.2 7.1 7.1 7.1 7.1 7.1 7.1 7.2 7.3.

7.3 7.2 7.2 7.2 7.2 7.3 7.3 7.1 7.1 7.1 7.1 7.1

.7.1 7.1 7.2 7.2 7.1 7.1 7.0 6.9 6.9 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.2 7.1 7.1.

7.1 7.1 7.2 7.1 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.1 7.1 7.0 6.9 Sensor Inoperative It Io to to I,

N.

I?

'I S

I I.......

• +

. I t....+::,l

+.

I I

TABLE 4.2-12 DISSOLVED OXYGEN AND pH DATA VERMONT YANKEE SAMPLE STATION NO.

7.

DECEMBER 1980 DISSOLVED OXYGEN (MG/L) pH Day Maximum Time Minimum Time Mean Maximum Minimum Sensor Inoperative 7.1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 It It 13.2 13.2 13.2 13.0 13.1 13.0 12.9 13.2 13.3 13.4 13.4 13.6 13.5 13.6 13.6 13.3 13.3 13.4 13.5 2330 0500 0000 0000 0000 0030 0100 2400 1300 1200 1200 1500 0200 2400 0600 0000 0000 1430 1400 12.9 13.0 13.0 12.9 12.9 12.8 12.7 12.9 13.1 13.2 13.3 13.3 13.2 13.4 13.3 13.2 13.2 13.3 13.3 0130 2300 2330 2400 2400 2400 1400 0130 2130 2230 0800 0100 2030 0000 2400 1200 1330 0600 0000 13.1 13.1 13.1 13.0 13.0 12.9 12.8 13.1 13.2 13.3 13.3 13.4 13.4 13.5 13.5 13.2 13.3 13.4 13.4 if

'a 7.1 7.1 7.2 7.2 7.2 7.2 7.1 7.1 7.2 7.2 7.2 7.2 7.2 7.2 7.2 7.1 7.2 7.2 7.1 7.1 7.1 7.1 6.9 7.0 7.0 7.0 7.1 7.1 7.0 7.0 7.0 7.1 7.1 7.1 7.1 7.1 7.1 7.1 7.0 7.1 7.0 7.0 7.0 7.0 7.0 Recorder Inoperative It W1 II II Recorder Inoperative It It 11

'I It It II if it It to 7.0 7.0 I

It it It 7.0 7.0 13.4 13.4 1430 0400 13.3 13.2 2230 1700 13.4 13.3

TABLE 4.3-1 CONDUCTIVITY AND TURBIDITY DATA JANUARY 1980 STATION NO.

3 Daily Average Conductivity Turbidity STATION NO.

7 Daily Average Conductivity Turbidity Day 1

2 3

4 5

6 7

8 9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

.29 30 31 89 97 103 103 96 93 95 100 101 100 96 1-02 108 108 108 104 96 95 99 i00 102 101 107 114 108 109 112 ill 105 104 101 3

2 2

1 1

11 1

2 2

2 2

32 2

3.5..

3 3

2 2

2 3

3 21 1

22 2

93 100 102 99 93 96 100 100 97 94 95 105 104 104 102 101 90 96 98 101 101 102 116 106 110 112 108 108 103 99 101 3

3 3

2 2

2 2

21 1

1 3

2 2

2 4

4 3

3 3

3 2

3 2

2 2

2 2

2 2

1 i..

TABLE 4.3-2 CONDUCTIVITY AND TURBIDITY DATA FEBRUARY 1980 DAY1 2

3 4

5 6

7 8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 STATION NO.

3 Daily Average Conductivity Turbidity 104 1

107 2

108 2

114 2

121 2

114 2

112 2

109 2

106 2

107 2

110 3

116 3

123 3

121 2

119 2

119 3

117 3

115 3

113 2

118 1

120 1

115 1

113 2

113 2

118 2

121 2

123 1

126 1

118-1 STATION NO.

7 Daily Average Conductivity Turbidity 107 1

110 2

119 2

123 2

112 2

11 2

109 2

107 2

110 2

112 2

120 2

124 2

121 2

121 2

116 2

113 2

il 2

111 2

113 2

116 2

ill 2

11 2

116 2

122 2

123 2

127 2

124 1

110 1

107 1

TABLE 4.4-1 VERMONT YANKEE ECOLOGICAL STUDIES CONNECTICUT RIVER, VERNON, VERMONT WATER QUALITY ANALYSIS Plant SAMPLE LOCATION Monitor 3 Monitor 7 Discharge Date

.2/20/80 2/20/80 2/20/80 Dissolved Oxygen 12.80 13.40 11.70 Turbidity (Formazin Units) 1.0 0.92 1.1 pH (pH Units) 7.29 7.28 7.29 Alkalinity (as Ca C0 3) 35.9 34.4 36.9 Total Hardness (as Ca C03) 43.6 43.8 44.9 Calcium Hardness (as Ca C0 3 )

36.2 36.2 37.5 Chloride 8.8 8.4 8.8 Sulfate 12.0 11.3 12.0

-Total Phosphate (as P) 0.020 0.020 0.015 Total Solids 108 95 104 Suspended Solids 1

1 2

Chromium (Total)

(0.002

<0.002

<0.002 Copper

<0.02

<0.02

<0.02 Iron (Total) 0.14 0.16 0.14 Sodium 5.8 5.6 5.9 Zinc

<0.02

<0.02

<0.02

1 All Results In mg/I Unless Otherwise Noted TABLE 4.4-2 VERMONT YANKEE ECOLOGICAL STUDIES CONNECTICUT RIVER, VERNON, VERMONT WATER QUALITY ANALYSIS Plant SAMPLE LOCATION Monitor 3 Monitor 7 Discharge Date 5/15/80 5/15/80 5/15/80 Dissolved Oxygen 9.85 10.00 7.80 Turbidity (Formazin Units) 0.75 1.2 1.2 pH (pH Units)

"7.55 7.45 7.80 Alkalinity (as Ca CO3 )

26.8 25.2 27.2 Total Hardness (as CaCO3) 37.9 37.0 40.8 Calcium Hardness (as Ca CO3 )

33.0 32.0 35.5 Chloride

.4.3 4.7 4.5 Sulfate 9.2 8.5 9.7 Total Phosphote (as P) 0.015 0.020 0.045 Total Solids 61 61 99 Suspended Solids 5

8 37 Chromium (Total)

"<0.002 <0.002

<0.002 Copper

<0.02

<0.02

<0.02 Iron (Total) 0.06 0.30 0.08 Sodium 3.6 3.7 3.8 Zinc 0.02 0.04 0.03 All Results In mg/I Unless Otherwise Noted

[

.. 1........

TABLE 4.4-3 VERMONT YANKEE ECOLOGICAL STUDIES CONNECTICUT RIVER, VERNON, VERMONT WATER QUALITY A.NALYSIS Plant SAMPLE LOCATION Monitor 3 Monitor 7 Discharge Dote 9/2/80 9/2/80 9/2/80 Dissolved Oxygen 7.80 6.75 6.90 Turbidity (Formazin Units) 1.2 1.2 2.4 pH (pH Units) 7.58 7.46 8.03 Alkalinity (as Ca CO 3 )

35.0 35.0 48.9 Total Hardness (as CaCO3 )

41.8 41.8 70.9 Calcium Hardness (as Ca CO3 )

35.2 35.2 59.4 Chloride 7.0 6.3 12.1 Sulfate 10.2 10.0 21.4

-Total -Phosphate (as P) 0.030 0.020 0.020 Total Solids 59 60' 117 Suspended Solids 3

3 5

Chromium (Total) 0.013 0.013 0.016 Copper

<0.02

<0.02 0.15 Iron (Total) 0.12 0.16 0.21

• Sodium 5.8 5.8 9.4 Zinc

<0.02

<0.02 0.05

• I All Results In mg/I Unless Otherwise Noted TABLE 4.4-4 VERMONT YANKEE ECOLOGICAL STUDIES CONNECTICUT RIVER, VERNON,-VERMONT WATER QUALITY ANALYSIS Plant SAMPLE LOCATION Monitor 3 Monitor 7 Discharge Date 12/15/8 12/15/80 Dissolved Oxygen 13.10 13.30 Turbidity (Formazin Units) 2.4 1.9 pH (pH Units) 7.4 7.1 Alkalinity (as Ca C0 3) 25.6 25.6 Total Hardness (as Ca C03) 34.9 34.4 Calcium Hardness (as Ca CO3) 29.2 28.7 Chloride 5.2 5.4 Sulfate 10.3 10.9

-Total Phosphate (as P) 0.020.

0.015 Total Solids 65 62 Suspended Solids 7

4 Chromium (Total)

<0.002

<0.002 Copper

<0.02

<0.02 Iron (Total) 0.20 0.20 Sodium 4.2 4.2 Zinc 0.02 0.02 All ResultstIn mg/l.Unless Otherwise Noted

5.

PLANKTON STUDIES Plankton samples were collected once each month in 1980 at Station 3, downstream of Vermont Yankee and at Station 7, upstream of the plant (Figure 5.1).

All samples were collected via the water quality pumping systems at those locations except the Sep-tember and December samples at Station 3.

On the sample collec-tion dates in those months the water quality monitor pumps were inoperative, so the samples were collected by bucket from the Vermont shore of the river.

Subsurface samples from the river at Vermont Yankee's condenser cooling water intakestructure were collected also on the thirteen dates in 1980 on which entrainment studies were conducted.

Samples were collected with a No.

20 mesh Wisconsin plankton net and preserved in 5%,formalin.

Subsequently an aliquot of the sample was examined in. a Sedgewick-Rafter counting cell.

Plankton were identified to the lowest feasible taxonomic level and were counted as their normally occurring unit, i.e.,

phytoplankters as cells, colonies, or filaments and zooplankters as individuals or colonies.

The results of these analyses are presented below.

5.1 Phytoplankton Studies A summary of the counting results of the analysis of the 1980 phytoplankton samples is given in Table 5.1.

This table shows for each sample the dominant species observed, when one taxon was found in greater numbers than any other one, the concentration in units per liter of that dominant organism, and the total count in units per liter of all algae in the sample.

The concentrations of phytoplankters found in the 1980 monitor samples are also shown graphically in Figures 5.2 and 5.3.

To permit ready comparison of the 1980 monitor sample data with that

-101-

-..-.-,,o Zo :..

PLANKTON SAMPLE-STATION LOCATIONS 0

1/2 SCALE IN MILES NEW HAMPSHIRE VERMONT Vermont Yankee 0 EM EIGURE 5.1

-102-

TABLE 5.1

-DOMINANT PIIYTOPLANKTON SPECIES (Dominant Species Count/Total Count in Units 1980 Per Literi SAMPLE LOCATION SAMPLE LOCATION River at VY Intake Date Monitor 7 Monitor 3 1/3 Asterionella formosa (39/182) 1/16 Asterionella formosa (32/62) 1/21 Fragilaria Fragilaria capucina capucina (4/38)

(8/36) 2/7-Asterionella formosa 2/19 Melosira (90/180)

Fragilaria italica spp.

(8/55) 2/22 (4/43)

Asterionella formosa (55/111) 3/6 Asterionella formosa (63/134) 3/19 Oscillatoria sp.

Cymbella sp.

(31/280)

(20/249) 3/25 Asterionella formosa (21/231) 4/10 Oscillatoria sp.

(135/974) 4/16 Ulothrix sp.

Ulothrix sp.

(8/81)

(10/103) 4/24 Melosira italica

• (171/402) 5/6 Melosira italica (635/2190) 5/20 Asterionella Asterionella formosa formosa (22/78)

(31/95) 5/21 Asterionella formosa

.(1687/3046) 6/5 Melosira italica (1202/2596) 6/17" Asterionella Melosira formosa italica

.(135/381)

(139/333) 6/20-Melosira italica (636/1574) 7/8.

Asterionella formosa (2820/8874) 7/14 Tabellaria Fragilaria fenestrata crotonensis (164/793)

(171/679) 8/13 Pediastrum melosira simplex italica (184/292)

(67/162) 9717 Melosira Melosira italica italica (33/85)

(276/577) 10/15 14closira Melosira italica italica (200/495)

(112/304) 11/19 Moeosira Fragilaria itnlica crotonensis

• (12/70)

(4/40)

[T/37 I

elosira italica None (6/71)

(-/34)

-103-

ZLM~bUNAL I'tiT IUV-LANKIO fN 0151 iBtIBU IJUN STATION NO,.7 - MONITOR 50 40 30 20 i0 Io w

(Li a-z CD a:

0 ILL 0

0r 9

8 7

6

.5 4

3 2

0 MONTHS 1980 1970-74 MEAN------..

MEAN+

2 STD. DEV.

FIGURE 5.2

-104-

SEASONAL PHYTOPLANKTON DISTRIBUTION STATION NO.3 - MONITOR 50

/1

~1

~

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40 --

30 -

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1 2

3 1 4I 1 5 1 6

7 1 8 1 9 1 10 o 1 I 1 1 MONTHS 1980 1970-74 MEAN MEAN+

2 STD.DEV.

FIGURE 5.3

-105-"

of earlier years, Figures 5.2 and 5.3 also carry plots of the monthly mean phytoplankton counts observed in the years 1970-1974, excluding data collected in 1974 during Vermont Yankee's open cycle testing.

Variability of algal concentrations about these means is indicated on the graphs by points which are two standard deviations greater than each monthly mean.

Algal concentrations in all the Station 3 and 7 samples except those of January were less than the mean concentrations observed in the years 1970-1974.

The January counts at both locations were just two algal units per liter above the 1970-1974 means.

Phyto-plankton counts observed in all the late summer and early fall samples were small relative to mean concentr~tion', observed for the corresponding months in 1970;-1974.

In earlier reports of this series (Aquatec 1975k 1976),

a statistical analysis of the phytoplankton data collected prior to Vermont Yankee's operation and during closed cycle operation at the two monitor stations was presented.

This analysis developed linear regression equations which predicted Monitor 3 counts from three ranges of observed Monitor 7 counts.

All Monitor 7*counts observed in 1980, except the 793 found in July, lie within the low range, 0-772 units per liter, for which the regression equation has an intercept of 29.3, a regression coefficient of 0.802, and a standard error of estimate of 193.

A comparison of the phyto-plankton counts observed at Monitor 3 in 1980 with counts predicted by this regression equation from counts observed at Monitor 7 is shown in Table 5.2.

The data of Table 5.2 are shown graphically in Figure 5.4,

• in which the regression equation is plotted as a solid line and the 95% confidence limits for Monitor 3 counts predicted by this equation are shown as dashed lines.

These-confidence limits were calculated for minimum, mean, and maximum Monitor 7 counts used in the regression analysis.

Vermont Yankee-was utilizing closed cycle cooling at the time of collection of the May through September samples and was not operating when the October and November samples

-107-

TABLE 5.2 COMPARISON OF OBSERVED MONITOR 3 PHYTOPLANKTON COUNT WITH MONITOR 3 COUNT PREDICTED BY REGRESSION ANALYSIS OF LOW RANGE PREOPERATIONAL/CLOSED CYCLE MONITOR DATA, 1970-1974 Monitor 7 Count Monitor :3 Count

.Date Obs~erved Observed-Predicited=Difference 1/21/80 38 36 60

-24 2/19/80 43 55 64

-9 3/19/80, 280 249 254

-5 4/16/80 81 103 94

+9 5/20/80 78 95 92

+3 6/17/80

.381 333 335

-2 8/13/80 292 162 263'

-101 9/17/80 85 577**

97.

+480 10/15/80 495 304

.426

-122 11/19/80 70 40 85

-45 12/30/80

71.

.3.

-.52 were collected.

The data for these dates are plotted in Figure 5.4 as filled circles; data of the other dates, when Vermont Yankee was operating in the open cycle cooling mode, are plotted as open,

circles, All points in Figure'5.4 except that of the 17 September sample fall within the 95% confidence.limits for a Monitor 3 count predicted from an observed upstream count at Monitor 7.' The September sample at Station 3 was collected by bucket from the river's surface, because the monitor pump was inoperative on the sample date.

'Data reported in earlier volumes'-of this series have shown that algal concentrations hear the surface at Station 3 are usually greater than in samples collected via the monitor pump from near the river bottom.

The phytoplankton concentration observed, at Monitor 7 in July fell within the middle range of counts used in the statistical analysis of preoperational and closed cycle data.

The linear regression 'equation developed for this middle range, Monitor 7.

.counts of 772-7283, has an intercept of -483. and a regression

-108-

COMPARISON OF OBSERVED MONITOR 3 PHYTOPLANKTON COUNT WITH MONITOR 3 COUNT PREDICTED FROM PREOPERATIONAL / CLOSED. CYCLE MONITOR DATA OF 1970- 74 tF L r 10~

y 1200 1100 1000 900 800 700 0

) 600 z

0 500 400 300.

200 100

/

/

/

./

S

/1.

PHYTOPLANKTON RANGE AT MONITOR 7.

0-772 ORGANISMS/LITER a

///

0 x

I I

120 1000 1100 1200 0

100 200 300 400 500 600 700 800 900 MONITOR 7 ORGANISMS PER LITER REGRESSION EOUATION (y = 29.3 +.802x) 95%

CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 VERMONT YANKEE CLOSED CYCLE OR NOT OPERATING, 1980 FIGURE 5.4

-109-0

coefficient of 0.912.

For the Monitor 7 count of 793 observed on 14 July, the Monitor 3 concentration calculated from. this equation is 240; the observed concentration was 679.

The difference :etween the predicted and observed concentrations is much less than the standard error of estimate (2443) for the regression equation.-

Thirty-four species of phytoplankton were identified in the samples collected at Stations 3 and 7.in 1980.

Seventeen additional taxa were found in small numbers in the samples of river water collected at Vermont Yankee's intake structure during entrainment studies.

A checklist of the phytoplankton identified in these samples is shown in Table 5.3.

Following the name of each taxon in the list are three numbers in parenthesis.

The first is the number of Station 3 samples in which the alga was observed;. the second is the number of Station 7 samples in which it was found; the third is the number of entrainment sample dates on'which the taxon was found in a river intake sample.

The average.numiber of identified species found in the twelve downstream Station 3 samples of 1980 was 7.7; in the upstream Station 7 samples

.it was 7.3.

Thjnumber per sample at Station 3 ranged from a minimum of two identified species, in February and December, to a maximum of 17 in the September sample.

At Station 7,

a minimum of three was observed in February and a maximum of 12 *in July.

In 1980, as in all prior-years of Vermont Yankee phytoplankton studies, species of diatoms again predominated in most samples.

Diatoms constituted less than half the algae observed in only one Monitor 7 sample and in three of the Station.3 samples.

More than fifty percent..of the phytoplankters observed in all the entrainment intake samples were diatoms.

A summary of the percentages of diatoms, flagellates, green, and blue-green algae found in the 1980

.phytoplankton samples is given in Table 5A4.

-110-

TABLE 5.4 MEAN PERCENTAGES AND PERCENTAGE RANGES

DIATOMS, FLAGELLATES, GREEN AND BLUE-GREEN ALGAE 1980 Diatoms Flagellates Greens Blue-Greens Sample Percentage Percentage Percentage Percentage Range Mean.

Range Mean Range Mean Range Mean Monitor 7.

34-91 71 0-2;4 0.4 0-64 14 0-23 3.5 VY Intake 64-98 87 0-3.9 0.8 0-3.7 1.2 0-14 3.6 Monitor 3 40-93 71 0-6.9 1.1 0-30 7.2.

0-45 7.1 The most commonly observed species of diatoms were, as in earlier years, Asterionella formosa, Fragil1azria :capucina and F.

crotonensis,: Melosira: italica and M.: varians, and Tabella6ria fenestrata.

Also as in earlier studies, the most common flagellates were Dinobryon spp., the most frequently observed green algae were Pediastrum.spp.,

and the most commonly-encountered blue-green species were Osci-latoria spp.

Asterionelia formosa and-Melosira italica were-found in all thirteen of the intake entrainment samples.

-111-

TABLE 5.3-1.

CHECKLIST OF THE PHYTOPLANKTON OF THE CONNECTICUT RIVER NEAR VERNON, VERMONT 1980 A listing by genus only that follows named species of the *same gentis represents species other than the preceding ones.

The: numbers in parenthesis after each'listed taxon are:.

(the number of Station 3 samples of 12 - the number.

of Station 7 samples of.12/the. number of entrainment intake sample sets of 13 in which the taxon was observed).

BACILLARIOPHYCEAE.

Asterionella formosa (8-6/13)

Cyclotella sp. 10-T074)

CyMbella sp. (1-0/0)

Diatoma sp.

(1-1/0)

Gomphonema-sp.

(0-1/0)

Fragilaria capucina (8-11/12)

Fragilaria crotonensis (7-6/9)

F sp.

(0-0/2)

Melosira grahulata (1-0/0)

Melosira granulata var. angustissima (0-0/1)

Melosira italica (10-11/13)

Melosira Barians (6-4/9)

Melosira sp, (1-0/0)"

Nitzschia sp. (0-0/1)

Surirella sp.. (1-0/6)

Synedra acus (0-0/5)

Synedra spp.

(7-4/9)

Tabellaria fenestrata (7-9/10)

CHRYSOPHYCEAE Dinobryon spp.

(2-1/11)

Synura sp. (0-0/3)

Uroglenopsis americana (0-1/4)

PYRRHOPHYCEAE*

Ceratium hirundinella (3-2/2)

-112-

TABLE 5.3-2 CRYPTOPHYCEAE Cryptomonas sp. (0-0/2)

CHLOROPHYCEAE Actinastrum sp.

(1-0/0)

Chlamydomonas sp. (0-0/1)

Closterium sp. (1-2/4)

Eudorina sp. (0-0/1)

Mougeotia sp. (0-0/1)

Oedogonium sp. (1-1/0)

Paulschulzia sp. (040/1)

Pediastrum boryanum (1-3/2)

Pediastrum duplex (2-1/3)

Pediastrum simplex (7.-6/11)

Pediastrum simplex var, duodenarium (0-1/0)

Scenedesmus quadricauda (0-0/1)

Scenedesmus spp.7(3-1/2)

Schroederia sp. (0-1/1)

Spirogyra sp. (2-2/5)

Staurastrum sp. (0-1/0)

Stigeoclonium sp. (1-2/3)

Tetraedron sp. (0-1/0)

Ulothrix onata (0-0/3)

Ulothrix spp. (1-3/3)

RHODOPHYCEAE.

Audouinella sp. (0-0/2)

CYANOPHYCEAE Anabaena sp. (1-0/0)

APhanoca sa sp. (0-0/1)

Calothrix 0-0/1)

Gomphosphaeria naeeliana (0-0/1)

Merismopedia sp. (0-1/1)

SMicrocystis aeru inosa (1-0/0)

Microcystis sp. (i-0/0)

OsciElatoria spp. (6-5/11)

-113-

5.2 Zooplankton Studies The results of the analysis of zooplankton samples in 1980 are summarized in Table 5.5 and in Figures 5.5..and 5.6.

Table 5.5 shows the concentration, in units per literi of zooplankters observed in each sample and the name and concentration of the predominant taxon in the sample, when one taxon was observed in' 7 greater concentration than any other.- In the figures, total zoo-plankton counts observed in 1980 at the two monitor stations are plotted,.along with monthly mean counts observed at these stations in the years 1970-1974, excluding times of open cycle testing.

To show variability about the means, the figures also carry plots of the means plus two 'standard deviations.

ZOoplankton concentrations observed in the latter half of 1980 were. generally small relative to counts in those months in.

the years 1970-1974.

But in February and April at Station 7 and in March at Station 3, zooplankton counts more than two standard deviations greater than the 1970-197.4 means were observed.

The concentration observed in June at Station 7 was also greater than the 1970-1974 mean, but was within two standard deviations of that mean.

Statistical analysis of zooplankton data collected at the two monitor stations in the years 1970-1974, prior to Vermont Yankee's operation and during closed cycle operation, has provided a basis for comparison of zooplankton counts observed at Monitor 3, down-stream of Vermont Yankee, with counts predicted from the zooplankton concentrations observed at Monitor 7 upstream.

This analysis, analogous to that used for phytoplankton, resulted in a linear regression equation relating Monitor 3 count, as dependent variable, to:the observed Monitor 7 count.

For Monitor 7 counts ranging from 0.5 to 418.5, the equation has a regression coefficient of 0.918, an intercept of 15.7, and a standard error of estimate of 83.8.

A comparison of the Zooplankton concentrations observed in 1980 at Monitor 3 with those predicted by this equation is given in Table

-5.6.

-114-

TAM3LE 5.A5 DOMINANT ZOOPLANKTON TAXA (Dominant Taxon Count/Total Count in Units Per Liter) 1980 SAMPLE LOCATION Date Monitor 7 River at Monitor 3 VY Intake 1/3 None

(-/1.5) 1/16 Campanella sp.

(2.0/3.5) 1/21 Campanella sp.

Campanella sp.

(9.5/11.0)

(3.5/6.0) 2/7 Campanella sp.

(3.0/5.8) 2/19 Vorticella sp.

Campanella sp.

(35.0/70.5)

(1.5/3.0) 2/22 None

(-/2.8) 3/6 Synchaeta sp.

(13.0/17.5) 3/19 Vorticella sp.

Vorticella sp.

(3.5/8.5)

(10.5/17.0) 3/25 Campanella sp.

(1.5/7.2) 4/10" Nematoda (9.5/13.5) 4/16 Vorticella sp.

Philodina sp.

(17.0/27.5)

(1.0/3.5) 4/24 Notholca sp.

(5.2/15.5) 5/6 Vorticella sp.

(7.7/13.8) 5/20 Vorticella sp.

Campanella sp.

(3.5/5.0)

(1.5/5.0) 5/21 Vorticella sp.

(2.2/7.8) 6/5 Synchaeta sp.

(77.2/116.5) 6/17 Synchaeta sp.

Philodina sp.

(13.0/36.51 (98.0/139.5) 6/20 Synchaeta sp.

(49.8/83.2) 7/8 Ploesoma sp.

(118.2/231.5) 7/14 Ploesoma sp.

Ploesoma sp.

(7.0/12.5)

(46.5/56.5) 8/13 Trichocerca sp.

Polyarthra sp.

(3.0/8.5)

(1.5/6.0) 9/17 None Copepoda. Nauplii

(-/9.0)

(2.0/13.0) 10715 Keratella cochlearis Copepoda Nauplii (2.5/5.5)

(2.0/4.5) 1T71 Vorticella sp.

None (4.0/6.0)

(-/2.0) 12/30 None Keratella

(-/4.0) cochlearis (1.0/1.0)

-115-

SEASONAL ZOOPLANKTON DISTRIBUTION STATION NO. 7 MONITOR 8

6-7

.5, LLII CLI 6

I.

4 IJ b~

ii 3

4 w

I I"'

I:

I 4

I MD H

I

• r-1 l

o 1

I FGI I

I I

U0 I:

z I

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11 2

i t I

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• l I.*

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.I I

0 I 11 MONTHS 1980

~17-74 MEAN MEAN +2 STD.DEV.----------

FIGURE 5.5

-116-

';5

Mr F

r-7.

L L

L[-

EZ L_.

SEASONAL ZOOPLANKTON DISTRIBUTION STATION NO.3.- MONITOR B

7 6

w I.-

-J 5

n -

U~)

U3

.~4 0

It.

0*

z Iz 2

0 MONTHS 1980 1970-74 MEAN MEAN+

2 STD. DEV.

FIGURE 5.6

-117-

TABLE 5.6 COMPARISON OF OBSERVED MONITOR 3 ZOOPLANKTON COUNT WITH MONITOR 3 COUNT PREDICTED BY REGRESSION ANALYSIS OF PREOPERATIONAL/CLOSED'CYCLE MONITOR DATA, 1970-1974 Monitor 7 Count Monitor.3 Count Date Observed Observed-Predicted=Dxfference 1/21/80 11.0 6.0 25.8

-19.8

'2/19/80 70.5 3.0 80.4

-77.4 3/19/80 8.5 17.0 23.5

-6.5 4/16/80 27.5 3.5 40.9

-37.4.

5/20/80 5.0 5.0 20.3

-15.3 6/17/80ý 36.5 139.5 49.2

+90.3.

7/14/80 12.5 56.5 27.2

+29.3 8/13/80 8.5 6.0 23.5

-17.5 9/17/80 9.0 13.0 24.0

-11.0 10/15/80 5.5 4.5 20.7

-16.2

-11/19/80 6.0 2.0.

2i.2

-19.2 12/30/80 4.0.

1.0 19.4

-18.4 This comparison is shown graphically in Figure 5.7, in which the regression equation is shown as a solid line and 95% confidence' limits are shown as dashed lines.

Zooplankton data collected at the monitor stations during open cycle operation of Vermont Yankee, in January through April and in December, are plottedas open circles; data collected in other months are shown as filled circles.

All plotted points fall within the 95% confidence limits.

• A checklist of the zooplankton observed in 198.0 is given in Table 5.7 at the end of this section of the'report.

Organisms observed in entrainment samples collected from the river at Vermont Yankee's intake structure are included in the list.

The three numbers in parenthesis following the-name of each taxon in the.list are:

the number of Station 3 samples, of 12; the number of Station 7 samples, of 12; and the number of entrainment intake samples, of 13, in which the taxon was observed.

Of the 49 taxa in-the list, 13 were observed only in entrainment intake samples.

-118-

w a-IV) 0 IF L.

E[

COMPARISON OF OBSERVED MONITOR 3 ZOOPLANKTON COUNT WITH MONITOR 3 COUNT* PREDICTED FROM PREOPERATIONAL /CLOSED CYCLE MONITOR DATA OF 1970-74 y

/

/

600 500 400 rO 0

300 z0 200 100 -

0

/

,/

/

/

/

/

/

/

..e

/

/

0 ZOOPLANKTON RANGE AT MONITOR 7 0-418 ORGANISMS /LITER 6 0x 600 0

100 200 300 400 500 MONITOR 7

ORGANISMS PER LITER REGRESSION EOUATION (y=l 5.7 +.918x) 95% CONFIDENCE LIMITS FOR PREDICTED y VALUES VERMONT YANKEE OPEN CYCLE, 1980 VERMONT YANKEE CLOSED CYCLE OR NOT OP.ERATING, 1980 0

FIGURE 5.7

-119-

The average number of taxa observed in the twelve Station 7 samples was 7.2, in the Station 3 samples the mean was 6.7.

The smallest number of taxa per Station 7 sample was 4 in January and November; the lakrgep.t number there was 16 taxa-in the June sample.

At Station.3, only one organism, Keratella cochlear is was found in the December sample; a maximum of 14 taxa was observed in the September sample.

Relatively large percentages of the organisms present in the samples of late fall and winter were protozoans, particularly Campanella sp. and Vorticella sp.

More than half the organisms.

observed in the January through March and the Norember samples at Stations 3 and 7 were protozoa.

They predominated also in the Station 7 samples of April and May.

Adult copepods were found in all seasons of the year.

Nauplii were present in 81% of the samples collected in 1980 and were found in some samples all twelve months of the year.

Rotifers were the dominant organisms in the warmer months of.

the year.

They constituted at least 50% of the zooplankters found in 6 of the 13 entrainment samples, in 6 of the 12 Station 7 samples, and in '5 of. the 12 Station 3 aamples, The more commonly observed rotifers were ratllacoc:hlearis and Philodina sp.,

which were found in at least half the samples collected at each location, Polyarthrasp., and Synchaeta.sp.

These four organisms were also the most prevalent rotifers in the zooplankton samples of the previous two years.

A summary of the percentages of protozoa, copepoda, cladocera, and rotatoria observed in the 1980 zooplankton samples is given in Table 5.8.

-120-

TABLE 5.8.

MEAN PERCENTAGES AND PERCENTAGE RANGES

PROTOZOA, COPEPODA, CLADOCERA, AND ROTATORIA 1980 Sample Protozoa Copepoda Cladocera Rotatoria e Percentages Percentages.

Percentages-Percentages Location Locat..n Range Mean Range Mean Range Mean Range Mean Monitor 7 0-100 46 0-18 6.9 0-12 3.8 0-78 41..

VY Intake 0-58 23 0-33 12 0-12 2.5 15-92 53" Monitor 3 0-82 29 0-50 14 0-33 8.6 0-i00 45-

-121-

TABLE 5.7-1 CHECKLIST OF THE.ZOOPLANKTON OF THE CONNECTICUT RIVER-NEAR-VERNON, VERMONT 1980 Zooplankters are listed in the lowest taxonomic level to which identification was made.

A listing by genus only that follows named species of the same genus represents species other than those previously listed.

The numbers *in parenthesis after each listed taxon are:

(the number of Station 3 samples of 12 -*the number of Station 7 samples of 12/the number of entrainment intake.

sample sets. of 13'in which the taxon was observed).,

PROTOZOA Acineta sp. (1-1/0)

Campanella sp..(6-6/11)

Carchesium sp. (0-2/1)

Vorticella sp. (6-7/8)

Zoothamnium sp.. (1-1/1)

NEMATODA Indet. (2-2/6)

ROTATORIA Ascomorpha sp. (0-0/1)

SAsplanchna spi (1-0/1)

Brachionus quadridentata (0-0/1)

Brachionus sp. (1-0/0)

Cephalodeila sp.

(0-0/1)

Conochiloides sp. (0-0/1)

Conochilus unicornis (0-0/5)

• Conochilu sp.

(0-1/72)

Euchlanis sp.

(1-1/1),

Filinia sp.

(0-1/1)

Gastropus sp.

(0-0/1)

Kellicottia bostoniensis (2-3/5).

Kellicottia 1ongispina (1-3/6)

Keratella cochlearis (6-8/8)

• Keratella quadrata (0-1/1)

Keratella sp. (0-0/1)

-122-

i TABLE 5.7-2 ROTATORIA (cont'd)

Notholca acuminata (1-0/0)

Notholca striata (1-1/1)

Notholca sp. (0-0/3)

Philodina sp.

(6-7/10)

Ploesoma sp. (2-3/2)

Polyarthra sp. (7-4/7)

Synchaeta sp.

(3-3/11)

Trichocerca sp. (1-1/2)

TARDIGRADA Indet. (1-0/6)

ANNELIDA Aeolosoma sp. (3-2/1)

ARTHROPODA Crustaceae Cladocera Alona guttata (0-i/0)

Alona sp. (0-1/0)

Bosmina coregoni (1-2/3)

Bosmina iongirostris (2-0/0)

Bosmina sp. (2-2/1)

Cerida~phnia acanthina (0-0/1)

Chydorus sphaericus (2-1/0)

Chy~orus sp. (0-015)

Daphnia sp. (0-1/0)

Diaphanosoma sp. (1-0/0)

Leptodora sp.

(1-1/1)

Polyphemus sp. (0-0/1)

Ostracoda Indet. (0-0/1)

Copepoda Cyclops sp. (0-1/0)

Indet. Adults (4-3/8)

Indet. Nauplii (9-8/13)

Insecta Diptera Chironomidae Indet. (0-0/2)

-123-

6.

ENTRAINMENT STUDIES 6.1 Phytoplankton and Zooplankton Entrainment Amendment No.

56 to Vermont Yankee's operating license, dated February 22, 1980, deleted its Appendix B Technical Specifications.,

which required Vermont Yankee to conduct entrainment studies twice a month while the plant was operating, in either open or closed cycle cooling modes.

Vermont Yankee's commitment to entrainment studies was thus reduced to the once monthly requirement during open cycle operation specified in its NPDES discharge permit.

However, Aquatec was not notified of this change until July 1980, so entrainment studies were conducted under the old schedule until July 8, 1980.

On 13 dates in 1980, samples of Connecticut River water at Vermont Yankee's cooling water intake structure and of the plant's cooling water discharge to the river were taken to assess the impact on phytoplankton and zooplankton due to entrainment.

Dupli-cate samples were collected at approximately two week intervals.

Entrainment studies were not conducted during closed cycle opera-tion after July 8, 1980.

The plant resumed open cycle operation at low power levels the last four days of December.'

Entrainment samples were not collected in that period.

For each sample, 40 liters of water, collected by bucket, were poured through a No.

20 mesh plankton net.

A portion of the fresh sample concentrate was examined within the hour to determine the identity and relative numbers of living and dead organisms.

Zoo-plankters were tabulated as living if they were observed to move or showed internal movement within one minute.

Phytoplankters were listed as living if they had normal pigmentation and no signs of plasmolysis.

The remaining portion of each sample was preserved with formalin for subsequent identification and enumeration of the organisms present.

-125-

The taxa of phytoplankton and Zooplankton found in the entrain-ment intake samples are indicated in the two'checklists, Tables 5.3 and 5.7, of the previous section of this report.

In those lists, the third number in parenthesis after each taxon is the number of' sample staes, of a total of 13, on'which the taxon was observed in an intake sample.

in general, the same taxa were observed in dis-charge samples as were found in river intake samples.

However, eight algal species were found in small numbers in 1980 discharge samples that were not observed in intake entrainment samples.

These were Diatoma sp.,, Tabellaria.flocculosa, Closterium acutum, Oedogonium sp., Scerfedesmus dimorphus, Staurastrum sp., Treubaria sp., and Lyngbya sp.

Four zooplankton species

- Tchlalis alata,

.Mon'ostyla sp., Chydorus bicornutus, and Daphnia pulex - were observed in discharge samples, but not in the intake samples.

The counting results of the analysis of the fresh and the preserved entrainment samples were summarized in Table 6.1..

The data of Table 6.1 have been-used to calculate the percent changes in live plankton concentrations between intake and discharge samples shown in Table 6.2.

In all previous years. of Vermont Yankee entrainment studies, greater.'plankton concentrations have been observed in some dis-charge samples than were present in the river samples collected at the intake structure.

This is attributable to the sloughing off into the circulating cooling water of aufwuchs, algal growth attached to the walls of the cooling water system that supports a.community of microinvertebrates.

Greater concentrations of live organisms in discharge samples than in intake samples were observed for phy-toplankton on 6 and for zooplankton on 3 of the 13 sample dAtes.

The impact of Vermont Yankee's entrainment of plankton on the river's concentration of live plankton is dependent upon the pro-portion of river flow, QR,* which is utilized as condenser cooling water.. Calculations.of the percent changes in river plankton con-centrations due to entrainment on the 13 study dates of 1980 are

-126-

shown in Table 6.3.

These calculations assume uniform distribu-tion of river plankton at the intake structure and complete mixing of plant discharge into the river.

During open cycle operation, plant discharge flow rate, QD' equals the rate of intake from the river, thus percent change of plankton concentration in the mixed river is the percent change through the plant, Table 6.2, multiplied by the ratio of QD to QR" During closed cycle operation, some water withdrawn from the river is lost by evaporation in the cooling towers.

The closed cycle calculations in Table 6.3 have assumed a concentration factor of 2 due to evaporation, which would reduce river flow by an amount equal to plant blowdown discharge, estimated conservatively at 15 cfs.

Percent change in river plankton concentration is calculated, then, by multiplying percent change through the plant by the ratio of 15 cfs to (QR-1 5 cfs).

The largest calculated decrease in live phytoplahkton concen-tration in the river was -8.8% in the samples of 6 May; that for live zooplankton concentration was -15% in the samples of 6 March.

Percentage decreases in live plankton concentration on Other open cycle dates were much smaller and, as noted above, calculated increases occurred on 6 dates for phytoplankton and 3 for zooplank-ton.

Calculated changes during closed cycle operation are very low because such a small portion of total river flow is used then as condenser cooling water.

It is because the entrainment impact of Vermont Yankee's closed cycle operation is so minimal that the requirement to conduct entrainment studies at such times has been deleted from their environmental monitoring requirements.

-127-

TABLE 6.1

SUMMARY

OF RESULTS VERMONT YANKEE ENTRAINMENT STUDIES 1980 Power Level Date

(%)

Condenser A (OF)

Sample Location Intake Discharge Sample Temp. (CF) 32.5" 65.5 Percent Living Organisms (Fresh Sample)*

Phytopiankton Zooplankton Number Organisms/Liter (Preserved Sample)

Phytoplankton Zooplankton 1/3 99.6 27.5 72 76 70 56.

1/16 99.5 27.5.

2/7 99.5 26.5 2/22 99.4 27.0 00 H

3/6 99.9 27.1 3/25 99.6 27.1 4/10 99.6 26.9 4/24 99.5 21.5 5/6 99.5 21.4 5/21 99.9 21.9 6/5 99.7 22.0 6/20 91.4 20.2 7/8 99.6 21.5 Intake 32.7 77 96 Discharge 62.6 74 73 Intake 32.9 85 94 Discharge 69.8 86 48 Intake 32.0 90 87 Discharge

.65.7 96 53 Intake 32.9.

75 93 Discharge 63.5 93 58 Intake 35.1 58 75 Discharge 62.2 80 55 Intake 41.0 66 93 Discharge 67.1 53 94 Intake 47.3.

88 76 Discharge 67.6 71 78 Intake 53.9 90 94 Discharge 75.3 90 88 Intake 57.7 89 92 Discharge 73.0 32 4

Intake 66.0 97 99 Discharge 70.3 19 7

Intake 68.2 90 95 Discharge 71.2 16 2

Intake 74.5 94 87 Discharge 75.2 13 2

4.............

182 489 62 100 180 178 ill 1764 134.

127 231 1051 974 12613 402 275 2190 435 3046 195 2596 291 1574 253 8874.

12309 1.5 3.5 3.5 4".2 5.8 9.8 2.8 7.0 17.5 9.0 7.2 7;0 13.5 24.0 15.5 4.2 13.8 7.8 7.8 4.5 116.5 17.5 83.2 22.8 231.5 197.8

TABLE 6.2 PERCENT CHANGES IN LIVE PLANKTON CONCENTRATIONS BETWEEN ENTRAINMENT INTAKE AND DISCHARGE SAMPLES Date 1/3180 1/16/80 2/7/80 2/22/80

.3/6/80 3/25/80 4/10/80 4/24/80 5/6/80 5/21/80 6/5/80 6/20/80 7/8/80 Parameter Phytopl ankton Zooplankton Phytopl ankton Zooplankton Phytopl ankton Zooplankton Phytopl ankton Zooplankton Phytopl anktoh Zooplankton Phytopl ankton Zooplankton Phytopl ankton Zooplankton Phytoplankton Zooplankton Phytopl ankton Zooplankton Phytoplankton

• Zooplankton Phytopl ankton Zooplankton Phytopl ankton Zooplankton Phytopl ankton Zooplankton

• LiVinq Organisms'PerLiter Difcha'6 Intake.

=

Differnce 372 131

+241 1.96 1.05

+0.91 74 48

+26 3.1 3.4

-0.3 153 153 0

4.7 5.4

-0.7 1693

.100

+1593 3.7 2.4

+1.3 118 100

+18 5.2 16.3

-11.1 841 134

+707

.3.8 5.4

-1.6 6685 643

+6042 22.6 12.6

+10.0 195 354

-159 3.3 11.8

-8.5 392 1971

-1579 6.9 13.0

-6.1 62 2711

-2649 0.2 7.2

-7.0 55 2518

-2463 1.2 115.3

-114.1 40 1417

-1377 0.5 79.0

-78.5 1600 8342

-6742 4.0 201.4

-197.4

.% Change thru Plant.

+180

+87

+54

.8

.8 0

-13

+1600

+54

+18

-68

+530

-30

+940

+79

-45

-72

-80

-47

-98

-97

-98

-99

-97

-99.

-81

-98

TABLE 6.3 CALCULATED PERCENT CHANGES IN LIVE PLANKTON CONCENTRATIONS OF RIVER EFFECTED BY ENTRAINMENT.

w 0

Date 1/3/80 1/16/80 2/7/80 2/22/80 3/6/80 3/25/80 4/10/80 4/24/80 5/6/80 5/21/80 6/5/80 6/20/80 7/8/80 Cooling Cycle Open Open Open Open Open Open Open Open Open Closed Closed Closed Closed

. Percent Recirculation 19 18

.22 21 17 0

06.

0" 0

98*

98*

98*

98*

Plant Discharge QD (cfs) 468 499 472 465 493 590 594 742 746 15*

15*

15*

15*

River Flow

• QR (cfs) 6290 7960 7600 2750 2240 17570 35960 12880 6750 10790 10610 7790 3910 Percent Change in Live Plankton.

Concentrations in Mixed River "Phytoplankton Zooplankton

• +13

+6.5

+3.4

-0.55 0

-0.81

+270

+9.1

+4.0 0

-15

+180

-1.0

+16.0

+1.3

-2.6.

-4.1

-8.8

-5.2

-0.14

-0.14

.-0.14

-0.14

-0.19

-0.19

-0.31

-0.38

• Estimated

6.2 Ichthyoplankton Entrainment Previous studies, in the years 1977-1979, of the entrainment of larval fishes.in Vermont Yankee's cooling water have been con-ducted in the months March, April, and May..

No ichthyoplankters were collected in those three years during March or April, so the 1980 study was limited to the 15 days of open cycle operation in May.

Once each day a sample was collected with a 0.5 meter diameter plankton net with a T.S.K. flowmeter positioned in the net's mouth.

The net was mounted in an aluminum frame and lowered by ropes to collect intake bay samples.

The results of the 1980 studies are summarized in Table 6.4, in which the data have been reduced to the number of larvae entrained per hour.

The table also shows, as a measure of the impact on river larval populations, the percentage of river flow being utilized as cooling water at the time of sampling.

Ichthyoplankters were first observed in the sample of 5 May, when a single larva was collected, and river temperature was 51.8*F.

In all four years of study the first collection of ichthyoplankton has been observed at river temperatures of about 51 0 F.

First observation in 1977 was on 2'May at a.tmperature of 51..20F; in.1978 on 15 May at 50:.80F; and in 197.9 on 5 May at a temperature 6f 51.20F.

Rates of entrainment of ichthyoplankton observed in 1980 were comparable to those found in the previous thriee years.

Few larvae were collected and relatively small proportions of river flow were being used for cooling water.

In late May, ri-ver flows usually decrease and river concentra-tions of. larval fish increase, But Vermont Yankee's reversion to closed cycle cooling mode on May 15 serves to minimize the plant's impact on ichthyoplinkton.

-131-

• 1~

TABLE 6A4 VERMONT YANKEE ICHTHYOPLANKTON ENTRAINMENT STUDIES I

(pJ N,

River Temperature Number Sample VY Intake Rate of River Intake Flow 1980 Station 7 of Larvae Volume Larvas Flow Rate Entrainment Flow Rate as % of Date Time (OF)

Collected (m3) per m (cfs).

Larvae/Hour (cfs)

River Flow 5/1 1545 46.3 0

34.5 0

748 0

16,400

.4 6 5/2 1400 47.5 0

44.8 0

754 0

11,500 6.6 5/3*

1105 49.3 0

52.3 0

745.

0 13,200 5-.6 5/4*

1618 51.4 0

38.3 0

757 0

13,400

• 5.6 5/5 1020 51.8 1

40.2.

0.025 750 1.9 x 103 4,400 17.0 5/6 1100 53.8 0

50.9 0

746 0

6,700 11.1 5/7 1407 55*3 0

37.0 0

750 0

10,700 7.0 5/8 1055 53.5 4

61.1 0.065 758 5.1 x 103 16,100 4.7 5/9 1805 52.8 0

47.3 0

762 0

17,600 4.3 5/10 1210 52.1

1.

51.1 0.020 757 1.5x 103 16,500 4.6 5/11

'0903 51.5 6

42.1 0.14 764 11 x10 3 15,000 5.1 5/12 1134 51.3 4

55.4 0.072 756 5.6 x 103 11,500

• 6.6 5/13.

0935 52.6 4

49.3 0.081.

769 6.4 x l03 12,200 6.3.

5/14 0845 52.9

8.

50.2 0.16 736 12 x 103 12,000 6.1 5/15 1019 53.4 0

5.4 0

346 0 -

8.800.

3.9 I

~

7.

BENTHIC FAUNA STUDIES Samples of Connecticut River benthic fauna were collected in 1980 at the four Vermont Yankee sample station locations shown in Figure 7.1 Samples were collected monthly, from May through November, with a 9" Ekman dredge from each of the four stations.

Each sample consisted of organisms collected in 30 dredge hauls, 10 from each river quarter point.

Henson traps, wire cages filled with 2 to 3 inch diameter rocks, were set at each location in May, July, and September and left in place for 8 to 10 weeks before retrieval.

The traps set at Station 2 in May and June were lost or vandalized before the retrieval date.

The material collected by either sample method was washed through a set of standard sieves and organisms retained by a No.

25 mesh sieve were preserved in 70% alcohol for subsequent analy-sis.

Identification was made to the lowest practicable taxonomic level, usually to genus.

Ninety-six taxa of bottom fauna were identified in the 1980 samples.

A checklist of these macroinvertebrates, Table 7.1, appears at the end of this section of the report.. The number of samples in which a listed taxon was found is shown in the table for each sampling technique at each sample station.

Of the total of 86 genera observed in the 1980 samples, 72 genera were found in the 28 Ekman dredge samples and 40 were found in the.10 samples collected by Henson trap.

Twenty-six genera were found in samples collected by both methods, 14 were found only in Henson trap samples, and 46 were observed only in Ekman dredge collections.

-133-

BENTHIC FAUNA SAMPLE STATION LOCATIONS 1 '

2 Vermont YankeeE>

SCALE IN MILES 4

NEW HAMPSHIRE VERMONT MASSACHUSETTS FIGURE 7.1

• -134-

The number of samples collected by Ekman aredge in 1980 was comparable to the numbers collected at Stations 2 through 5-in the years 1969 and 1977-1979.

A comparison of the number of genera collected by Ekman dredge in these years with the results of the 1980 collections is shown in Table 7.2.

TABLE 7.2 COMPARISON OF NUMBER OF SAMPLES AND NUMBER OF GENERA OF BENTHOS COLLECTED BY EKMAN DREDGE Station Number of Samples/Number of.Genera Number 1969 T977.

.1978 1979.

1980 2

6/33 8/20 8/22 7/27 7/36 3

6/24 8/25 8/13 7/26 7/39 4

7/16 8/19 8/17 7/26 7/30 5

8/18 8/20 6/14 7/28 7/25 The numbers of genera found in samples from Stations 2,.3, and 4 were greater than in earlier years; the number at Station 5 was greater than in 'all prior years except 1979.

More dredge hauls were used in the collection of the 1979 and 1980 samples (30.hauls/

sample for all collections except May 1979) than in the previous years.

That this increased effort disclosed greater numbers of genera indicates that Vermont Yankee's operation has not adversely affected the river's benthos diversity.

Another measure of diversity is shown in Table 7.3, a summary of the results of the analysis of the 1980 benthic fauna samples.

The summary shows for each sample the number of organisms and taxa observed and lists the predominant type of benthos in the sample and the percentage of that form in the sample.

A diversity index is also tabulated for each sample.

The index was calculated with the following equation:

C. (Nlog 1

N.- Z ni log1 0 ni)

-135-

where C is a constant which converts logarithms from base 10 to

'base 2; N is the number of organisms; and ni is the number of organisms in the i' taxon.

In general, diversity indices are larger for samples collected by. Ekman dredge than for the-Henson trap samples.

In all the Ekman dredge sample sets, except that collected in October, the diversity index at one or more of the sample stations (2, 3, or 4) which might have been affected by Vermont Yankee's discharge was greater than at Station 5, upstream of Vermont Yankee.

This was the case also for the July and September Henson trap collections.

The number of taxa and the number of organisms per sample were also usually greater at one of the downstream locations than at upstream Station 5.

As has been found in earlier years, caddis fly and chironomid larvae were the predominant organisms in most of the spring and summer.samples.

Fall samples showed a greater variety of dominant forms - fingernail clams, planarians, oligqchaetes.

Chironomids and caddis flies were again dominant in the November Henson trap samples.

The very low Station 2 and 3 diversity indices in that sample set were attributable to large percentages of a single chironomid species, Tanytarzsus sp., which accounted for 90% of the Station 2 sample and 94% of the Station 3 sample.

Large percentages of the chironomid, Gl~yptcteindipes sp,,:,in-.all three Henson trap samples of July and the Station 5 sample of September are evidenced in the relatively low diversity indices of those samples.

-137-

TABLE 7.3-1

SUMMARY

OF RESULTS OF ANALYSIS BENTHIC FAUNA SAMPLES 1980 I.

H Sample Method Number of Number Diversity Predominant Form(s)

HT (# Days)

Sample Benthic of Index

% of Date ED (# Hauls)

Station Organisms Taxa Name(s)

Total 5/22 ED.(30 hauls) 2 21

.11 2.70 Caddis flies 57 ED (30 hauls) 3 35 10 2.59 Caddis flies 89 5/21 ED (30 hauls) 4 69 18 3.53 Chironomids 59 ED (30 hauls) 5 31 14 3.43 Chironomids 48 6/19 ED (30 hauls) 2 56 15 3.47 Caddis flies 32 ED (30 hauls) 3-68 21 3.82 Caddis flies 57 6/20 ED (30 hauls.)

4 51 16 3.64 Fingernail clams 33 ED (30 hauls) 5 52 16 3.52 Tubificids 29 7/22 ED (30 hauls) 2 102 17 2.96 Fingernail clams 34 ED (30 hauls) 3 307 13 2.17 Chironomids 51 7/23 ED (30 hauls) 4 166 18 3.32 Chironomids 54 7/24 ED (30 hauls) 5 134 16 2.67 Chironomids 68 7/22 HT (60 days) 3 174 10 1.80 Chironomids 61 7/25 HT (62 days) 4 1331 13 0.60 Chironomids 92 HT (62 days) 5 200 6

0.71 Chironomids 90 8/15--

ED (30 hauls) 2 88 26 3.92 Oligochaetes 31 ED (30 hauls) 3 202 17 2.43 Caddis flies 47 ED (30 hauls) 4 84 18 3.32 Chironomids 38 8/14 ED (30 hauls) 5 10.6 18 3.3.0.....

Chirconomids 44

• *~.....

I..

S.C I

..... j.,...

r~ ~

TABLE 7.3-2

SUMMARY

OF RESULTS OF ANALYSIS BENTHIC FAUNA SAMPLES 1980 Sample Method Number of Number Diversity Predominant Form(s)

HT '(# Days)

Sample Benthic of Index

% of Date ED (# Hauls)

Station Organisms Taxa a

Name(s)

Total 9/16 ED (30 hauls) 2 129 17 2.94 Oligochaetes 29 9/19 ED (30 hauls) 3 29 12 3.28 Chironomids 31 9/18 ED (30 hauls) 4 50 12 2.98 Fingernail clams 46 ED (30 hauls) 5 39 11 2.76 Fingernail clams 51 9/19 HT (59 days) 3 177 9

1.77 Cladocerans 58 9/18 HT (55 days) 4 101 13 2.56 Planarians 44 HT (55 days) 5 1394 8

1.62 Chironomids 56 10/28 ED (30 hauls) 2 7

3 1.45 Fingernail clams 57 ED (30 hauls) 3 162 13 2.25 Planarians 41 ED (30 hauls) 4 20 8

2.68 Oligochaetes 45 ED (30 hauls) 5 20 9

2.81 Chironomids 40 11/20 ED (30 hauls) 2 25 4

1.24 Fingernail clams 72 ED (30 hauls) 3 21 6

1.66 Fingernail clams 67 11/19

• ED (30 hauls) 4 28 12 3.20 Oligochaetes 46 ED (30 hauls) 5 32 9

2.83 Chironomids 34 11/20 HT (65 days) 2 110 6

0.66 Chironomids 90 HT (62 days) 3

.1595 11 0.44 Chironomids 98 11/19 HT (62 days) 4 148 12 2.04 Caddis flies 60 HT (62 days) 5 75 13 2.40 Planarians 51

1.

I.

TABLE 7.1-1 CHECKLIST OF THE BENTHIC FAUNA OF THE CONNECTICUT RIVER NEAR VERNON, VERMONT 1980 Number of samples in which a taxon was observed at each sample location in collections made by Henson trap and Ekman dredge Sample Station Number..

Collection Method (No.

Samples Collected) 2 HT(I )-ED(7) 3 HT.(3) ED(7)-

.. 4 5

HT(3)-ED(7) :.HT(3) ED(7)-

0>

PORIFERA (Sponges)-

Demospongia Indet. Spongillidae COELENTERATA (Hydroids, Jellyfish)

Hydrozoa Indet. polyp 0

2 0

1 0

0 0

0 0

0 2

1 0

0 2

0 PLATYHELMINTHES

.Turbellaria (Flatworms)

Dugesia tigrina Dugesia sp..

BRYOZOA (Moss Animacules)

Gymnolaemata Paludicella articulata Phylactolaemata.

Fredericella sp.

Pectinatella magnifica Pectinatella sp.

Plumatella sp.

0 1

2 5

0 2

0 6

0 3

0 1

S1 0

2 0

0 1

0 1

0 0

0 0

0 0

0 0

0 2

0 0

0 0

0 0

12 1

l 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0

• t.

S.

a.

r77,11 r7r..,i 77"

-. 0 TABLE 7.1-2 Sample Station'Number Collection Method (No.

Samples Collected) 2 HT(I )-ED(7.)

":3 HT(3)fID(7) 4 HT(3) ED(7:1 5.-

HT(3)-ED(7)

H H

ANNELIDA Oligochaeta (Aquatic Earthworms)

Aeolosoma-sp.

Branchiura sowerbyi Limnodrilus sp.

Lumbriculus' sp.

Pristina sp.

Stylaria fossularis Tubifex tubifex Hirudinea (Leeches)

Glossiphonia complanata Helobdella fusca Helobdella sp..

ARTHROPODA Crustacea Cladocera (Water Fleas)

Daphnia pulex Daphnia sp.

Mmona recterostris Indet.

Isopoda (Aquatic Sow Bugs).

Asellus intermedius Asellus militaris Asellus sp.

Amphipoda (Scuds)

Crangonyx sp.

Hyalella azteca Synurella sp.

0 0

0 0

0 0

0 0

1 0

1 0

0 5

21 0

1 0

2 0

0 0

1 0

0

-0 0

.00 0

0

.0 0

0 0

0 0

0 0

0.

0 0

0 0

00 0

0 0

0 1.

0 1

0 0

0 0

00 0

0 0

1 0

1l 0

0 0

0 0

1 0

0 0

.0 00 0

0 0

2 0

0 0

0 0

0 1

0 0

0 0

0 0

1 1

0 0

0 0

0 0

0 0

0 00 0

1 0

0 0

0 0

01 1

............ -. I --..- -....;............4.,. t..-

'. 11'-'-ý'.'

1;.

TABLE 7.1-3 Sample Station Number Collection Method (No.

Samples Collected) 2 HT(l )-ED(7) 3 HT(3) ED(7).

4 HT(3)ED(71 5

HT(3)ED(7).

H ARTHROPODA (cont'd)

Crustacea Decapoda (Crayfishes)

.Orconectes limosus Orconectes os-curus Arachnoiela Indet. Hydracarina (Water Mites)

Insecta Plecoptera (Stoneflies)

Indet.

Ephemeroptera (Mayflies)

Caenis sp.

p*pemerella sp.

Ephoron sp.

Heptagenia sp.

-Hexagenia sp.,

Isonychia sp.

Rhithrogena sp.

Stenonema sp.

Tricorth~odes sp.

Odonata (Dragonflies, Damselflies)

Anomalagrion sp.

romogomphus sp..

Enallagma..sp.

Epicordulia sp.

Gomphus sp.

Ischnura sp.

Lestes-sp.

A--coia sp.

Neurocordulia sp.

Ophiogomphus sp.

Tetragoneuria sp.

1 0

0 1

0 0

0 0

0 2

0 0

0l1 0

0 0

0 1

0 0

0 0

0 0

1 0

0 0

0a 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 1

1 0

1 0

0 0

10 1

0 0

0 00 0

0 0

0 0

0 0

0 0

0 0

0 0

0 0

0 1

1 00 1

0.

20 1

0 0

0 0

0 0

0 0

0 1

00 0

1 00 1

01 0

0 0

1 0

5 0

0 0

0 0

0 0

0 0

0 0

1 0

.0 0

0 0

0 0

6 0

0 0

0 0

0 00 0

0 0

0 00

r7711 r:

T TABLE 7..1-4' Sample Station Number Collection Method (No.

Samples Collected)

I ARTHROPODA (cont'd).

Insecta Megaloptera (Alderflies, Dobsonflies, Fisf lies)

Sialis sp..

Neuroptera (Spongilla Flies)

Sisyra vicaria Tric-opte-a '{Caddis Flies)

Athripsodes sp.

Cheumatopsyche sp.,

Cheumatopsyche sp. (pupa)

Chimarra sp.

rpsychesp..

Leptocella sp-.

Macronemum sp.

Neureclipsis.. sp.

Oecetis sp..

Phylocentropus sp.

Polycentropus sp.

Coleoptera (Beetles)

Indet. larva Diptera (Flies, Mosquitoes, Midges)

Ceratopogonidae (Biting Midges)

Palpomyia tibialis Chironomidae (Midges)

Chfronomus!..Sp.

Cyrynoneupa sp.

Cr otu p-sp Cryptochtirohomus-sp, Daimesa..sp,.

Endochi~ronomUs sp, 0

0 0

0 0

0 0

1 0

0 0

0 6

0 0

2 21 0

1 0

4 0

2.-

0 0

0 0

0 0-0 00 1

61 1.

5 12:

1 0

01 0

0 0

0 0

0 0

0 31 l

0 0

0 0

0 1

0 14 0

0 0

0 0

0 0

0 0

0 0

2.2 0

0 0

0 0

0 0

1-2 0

0 2

3 4

5 HT(l)ED(7) HT(3)-ED(7)

HT(3)-ED(7)

HT(3)-ED(7) 0<

1 0

0 2

2 0

1 0

0 0

1 0

0 0

0 0

0 0

0 0

0 0

1 0

0.

0 0

0 3

0 2

0 00 0

00 0

0 110 0

0 0

0 I

0 0

00 0

0 0

2 0

0 4

0 0

6 0

2 0

0 0

0 0

0 5

0 0

7 0

0

TABLE 7.1-5

.Sample Station Number Collection Method (No.

Samples Collected) 2 HT(1)-ED(7) 3 HT(3) ED(7) 4 HT(3) ED(71 5

HT(3) EU(7).

!:~

ARTHROPODA (cont'd).

Insecta Diptera -(Fl ies, Mosquitoes, MidgesY)

Chironomiidae (Midges)

Eukiefferiell a sp.

Glyptbtendipes senilts Glyptoten ipes sp Orthocladius.sp.

Parachironomus.sp.

Paracladopelma sp.

Pentaneura sp..

Phaenopsectra-sp.

Polypedilum sp, Procladius sp..

Psectrocladius sp.

Stictochironomus sp.

Tanytarsus sp.ý Tribelos.sp.

TrIchocladius. sp.

Cul.icidae (Mosquitoes, Phantom Midges)

Chaoborus sp.

0 0

0 0

0 0

0 0

0 0O 0'

0 10 0

0 0

30 I0 1

0 0

0 0

0 0

0 3.

-0 0

0 0

0 0

0 0

10 0

0 1

3 1

3 0.

0 01 00 0

20 0

0 1

3 0

0 0

1 0

0 2

0 0

0 0

0 11 3

0 01 1.

4 2

01 2

4 0

2 2

0 0

0 1

0 0

0 1

0 2.

1 0

1 0

03 0

00 3

0I 2

0 0

0 2

3 0

0 0

0 0

1 0

0 MOLLUSCA Gastropoda (Snails, Limpets).

Amnicola sp.

Gyraulus sp.

Helisoma sp.

Physa sp.

Pelecypoda (Clams, Mussels)

P'sidlum sp.

phaderum sp.

Indet'.'.

1 0

0 0

0 0

0 4

2 5

0 3

7 2

3 0

2 0

0 0

0 4

0 3

1 25 1

0 0

0 0

0 0

0.

0 0

0 0

56 1

0 0

0 0

0 0

0 0

0 00 6

63.

S.

I;.;.

U.

8.

FISH STUDIES 8.1 Fish Impingement Studies During all five phases of the special open cycle testing conducted in the years 1974-1978, fish impinged on Vermont Yankee's traveling screens at the intake structure were collected each day and identified, counted, weighed, and measured.

The results of these :studies, summarized in the Phase V report (Aquatec 1979b),

provided the basis for the schedule of impingement studies, set forth in Vermont Yankee's current NPDES permiti to be conducted during open cycle operation.

However, the Appendix B Technical Specifications to Vermont Yankee's operating license, which required that all impinged fish be collected, was not amended until February 1980.

This amendment (No.

56) deleted the require-ment that impingement studies, other than by the NPDES schedule, be done.

However, Aquatec was not aware of this change until mid-summer, so all fish impinged during open cycle operation through May 1980 were collected.

• A summary of the weight extremes and the extremes in total length of the fish species impinged during open cycle Operation in January-May 1980 is given in Table 8.1.

In Table 8.2, the numbers and total weight in grams of each impinged species are shown for each of these months.

The fish-species are listed in order of the decreasing number of the species collected.

The table also shows, for each month and for the period January-May, the mean number and mean weight of fish impinged per day of open cycle operation in 1980.

At the bottom of the table are listed the daily means and standard deviations, for both

.. number and weight of fish impinged, that-were observed for those months in the five phase open cycle test program.

-145-

TABLE 8.1

SUMMARY

OF WEIGHT AND'TOTAL LENGTH EXTREMES OF FISH SPECIES IMPINGED DURING OPEN CYCLE OPERATION 1980 Species Salmo trutta Linnaeus Brown Trout Osmerus mordax (Mitchill)

Rainbow Smelt Catostomus commersoni (Lace'pede)

White Sucker Notemigonus crysoleucas (Mitchill)

Golden Shiner Notropis cornutus (Mitchill)

Common Shiner Notropis hudsonius (Clinton)

Spottail Shiner Hybognathus nuchalis Agassiz Silvery Minnow Ictalurus nebulosus (LeSueur)

.Brown Bullhead Ictalurus natalis (LeSueur)

Yellow Bullhead Fundulus diaphanus (LeSueur)

Banded Killifi~h Morone americana (Gmelin)

White Perch Perca flavescens (Mitchill)

Yellow Perch Etheostoma olmstedi Storer Tessellated Darter Micropterus dolomieui Lace'pede Smallmouth Bass Micropterus salmoides (Lace'pede)

Ltargemouth Bass Lepomis gibbosus (Linnaeus)

Pumpkinseed

-Lepomis macrochirus Rafinesque 8 BUegill Juvenile Lepomis Ambloplites rupestris (Rafinesque)

Rock Bass Cottus cognatus Richardson Slimy Sculpin Weight(g)

Total Length (nm) 3.9 6.7-38 1.9-58 0.8-97 3.5:

0.3-16 1.2-16 5.4-39 5.4 1.4-6.0 2.5-419 5.6-340 1.2-4.2 2.4-322 5.6-213 1.3-60 1.3-228 0.3-2.7 0.5-44

. 2.3 68 113-195 61-173 52-204 81 42-127 58-115 80-154

.80 58-82 60-287 83-280 51-76 4.-!57-295 78-250 51-143 51-215 33-50 30-125 59

-146-

FM

'*"orn '

=

4 1

TABLE 8.2

SUMMARY

BY MONTH OF NUMBER AND WEIGHT OF FISH SPECIES IMPINGED DURING OPEN CYCLE OPERATION 1980 I"

H*

Species Spottail Shiner Juvenile Lepomis Rock Bass Pumpkinseed White Perch Silvery Minnow Yellow Perch Smallmouth Bass Golden Shiner Bluegill Tessellated Darter Brown Bullhead Rainbow Smelt White Sucker Banded Killifish Largemouth Bass Yellow Bullhead Brown Trout Common Shiner JAN No.-Wgt. (g) 16-44.6 4-8,3 1-24.0 4-43.0 7-711.7 1-12.5 3-41.8 FEB No. -Wgt. (g) 9-33.3 1-4.2 6-188.8 5-778.6 1-9.0 3-45.8 MAR No.-Wgt. (g) 1271-4156.1 5-7.7 20-1 35.5 29-424.0 73-1472.5 17-64.4 14-413.5 12-70.2 2-169.0 3-7.0 4-9.6 1-1.9 APR No.-Wgt.(g) 725-2547.0 330-488.2 145-460.1 183-711.9 49-1714.2 68,317.5 60-1892.5 33-278.3 57-402.5 15-451.8 5-10.8 10-191.9 7-151.8 6-78.9 4-14.1 3-228.4 1-5.4 MAY No.-Wgt. (g)88-271.1 47-84.8 123-232.9

21-101.5 13-165.2 2-14.9 7-265.1 25-891.0 7-107.5 1-52.0 4-11.5 1-13.0 3-78.7 2-5.1 1-16.0 1-3.9 TOTALS No.-Wgt.(g) 2109-7052.1 386-589.0 290-856.7 243-1469.2 147-4842.2 87-396.8 83-2592.6 76-1327.1 66-679'0 20-513.8 13-31.9 11-204.9 10-230.5 7-80.8 7-21.0 5-270.4 1-5.4 1-3.9 1-3.5 1-3.0 1-1.8 1-26.0 1-3.5 Slimv-Sculpin 1-Z.3 I-2,-

TOTA-LS 38,914.9-96ý 0

26-0..5 1451-6-931.-:4 1702-994_-

347-231.5 3564-211"I No. Days of open Cycle Operation 31 26

.31 30 15 133 Daily Means.

.1.2-29.5

.1.0-40.8.

46.8-223.6.

56.7-331.6.

23.1-154.4 26.8-159.2 Daily Means(Phases I-V) 1.0-66.3 1.2-15.3 23.6-248.0 71.9-692.3 8.9-113.5 23.8-250.3 Stnd. Dev. (Phases I-V) 1.6-432.9 1.9-42.0 112.4-710.1 102.8-959.0 10.1-215.7 78.0-655.3

All.daily.means, both number and weight, observed in each open cycle month of 1980 were within the two standard deviations of the Phases I-V daily means for the corresponding months.

In fact, only

.the mean number'of fish impinged in May, 23.1 per day, exceeded the corresponding Phases T-V mean plus one standard deviation, 19.0 per day.

Both the'dailymean number and weight of fish impinged during 133 days of open cycle operation were less than the daily means plus one standard deViation for corresponding months during the Phases I-V studies, 8.2 Resident Finfish Studies In 1980, 1602 fish were collected at Vermont Yankee Sample Stations 3,

.4, 5, and 8.

The locations of the sample stations are shown in Figure 8.1.

The fish were taken in 96 collections by three capture methods - trap net, gill neto and seine haul.

A summary by sample station and capture method of the fishing effort made and the'numbers and weight of.fish collected 'is shown in Table 8.3.

All fish collected were identified and their weight and total length were measured and recorded.

Of the nineteen species observed in 1980 collections, eleven were captured both upstream and down-stream of Vernon Dam.

Three species -- spottail shiner, silvery minnow, and American eel -- were observed only in collections north of the dam; five species -

fallfish, brown bullhead, yellow bull-head, northern pike, and chain pickerel -- were found only in the collections south of Vernon Dam.

Northern pike is a species that has not been collected previously in-Vermont Yankee fish studies, which were begun in 1968.

A single specimen, weighing 400 grams with a total length of 400 mm, was taken on 16 September 1980 in an experimenta.gill net set near Stebbjn Island.,.about 1,25 miles downstream from Vernon Dam.

The data of the 1980 fish collections are summarized by species in Tablesl 8.4, 8.5, and 8.6.

Table 8.4 shows for all collections the number, the total weight, and the extremes in weight and total length observed for each species.

Tables 8.5

-148-

F BRATTLEBORO GUILFORD3&

,m

-SAMPLE I ~COWI CHESTERFIELD 0

I/;

SC NEW HAMPSHIRE ISH STATIONS J. RIVER 2

I 2

ALE IN MILES I

I I

I I

VERNON HINSDALE I

VERMONT YANýEE NUCLEAR PLANT-...-

Oh w-Daw VERMONT

,FRAýýL', COU --

~~-

CONT cON MASSACHUSETTS FIGURE 8.1

-149-

TABLE 8.3

SUMMARY

OF FISHING EFFORT-AND RESULTS 1980 CIAPURE METHOD I RAP NPT GLuL NPT SFINF HAIII TA3TAI 5; In U,

0 No.

No.

No.

No.-.....

SAMPLE No.

Weight Net Set No.

Weight Net Set-No.

Weight No.

No.

Weight LOCATION Fish (9)

Sets Hours Fish (g)

Sets Hours Fish (g)

Hauls Fish (I )

South of Vernon Dam Station 3 355 137444 32 729 68 53594 10 226.

148 215 3

571 191253 North of Vernon Dam Station 4 464 63610 16 364 130 50257 5

109 0

0.

0 594 113867 Station 5-305 37764 9

204, 68 35524 5

108 0

0 0

373 73288 Station 8 46 1.0893 11 256 18 5686 7

164 0

0 0

64 16579 Totals - North of Vernon Dam 815 112267

.36 824 2.16 91467 17 381 0

0 0

1031 203734 Totals -. All Locations 1170 249711.

68 1553 284. 145061 27ý 607 148 215 3

1602 394987

and 8.6 summarize -

by sample station, capture method, and number of collections in which the species was taken - the numbers and total weights of the species captured north and south of Vernon Dam.

Frequency distributions by total length for nine species are shown in Table 8.7.

The. species compositions, by weight and by number, of the 1980 collections are graphed in Figures 8.2 and 8.3.

These compositions are reduced to a percentage basis and shown in Figures 8.4 and 8.5, along with percentage compositions of earlier surveys to permit comparison with previous studies.

The percentage by number of white perch in the 1980 collec-tions (30.8%) was greater than the previous maximum for this species (29.0%)

in 1974.

This increase is attributable chiefly to the relatively low numbers of pumpkinseed and bluegill captured in 1980.

The percentage by.weight of Le'ionais *spp. in the 1980 survey (4.0%) was smaller than for any prior survey except that-of 1976 when these species constituted 3.4% of the weight of all fish taken.

The percentages by weight that are shown in Figure 8.4 for 1980 are all within ranges that had been observed in earlier surveys except the percentage by weight for "all other species."

The 12.2% by weight for "All other species" results from relatively greater weights of brown bullhead, chain pickerel, and walleye captured in 1980.

in particular, the biomass of.walleye in the 1980 survey was significantly greater than in earlier years.

The 48 walleye collected in 1980 weighed 30,.522 grams, 7.7% of the weight of all fish taken.

The previous maximum percentage by weight of !'all other species" was 9.4% in 1978.

This was due also to walleye, which constituted 6.7% of the weight of all fish in that year'ls survey.

Scale samples for age determination were taken from all white perch, yellow perch, walleye, and smallmouth bass collected in

-1980 that had a total length of:more than 50 mm.

The results of the reading of these scales, along with the age-growth data

-151-

collected in years prior to Vermont Yankee's operation with open cycle cooling, are shown in Tables 8.8 through 8.1i.

The data on number of annuli and mean total length from these tables are shown graphically in Figures 8.6 through 8.9.

The age-growth. data for white perch, yellow perch,.and small-mouth bass in 1980 are not significantly different from the data.

of the years 1969-1973.

Small differences are found when few specimens in an annulus group were captured.

The.age-growth curves for walleye in each of the years 1977 through 1979 had indicated an increased growth rate relative to the 1969-1973 curve..

To confirm this, the scale samples from walleye collected in 1969-1973 were reread.

Based on this re-examination, revised age-growth data for the years 1969-1973 are shown in Table 8.10.

The plots of these revised 1969-1973 data and that of 1980 (Figure 8.8) also indicate-an enhanced walleye growth rate in 1980 relative to the years 1969-1973.

-152-

TABLE 8.4 FISHES OF THE. CONNECTICUT RIVER IN THE VICINITY OF VERNON, VERMONT ALL COLLECTIONS 1980 Species Catostomus commersoni (Lace'pede)

-White Sucker Cyprinus carpio Linnaeus Carp Semotilus corporalis (Mitchill)

Fallfish Notemigonus crysoleucas (Mitchill)

Golden Shiner Notropis hudsonius (Clinton)

Spottail Shiner Hybognathus nuchalis Agassiz Silvery Minnow

.Juvenile Cyprinidae Ictalurus nebulosus (LeSueur)

Brown Bullhead Ictalurus natalis (LeSueur)

Yellow Bullhead Esox lucius Linnaeus Northern Pike Esox niger LeSueur Chain Pickerel Anguilla rostrata (LeSueur)

American Eel Morone americana (Gmelin)

White Perch Perca flavescens (Mitchill)

Yellow Perch Stizostedion vitreum (Mitchill)

Walleye Micropterus dolomieui Lacep'ede Smallmouth Bass Micropterus salmoides (Lac6p'de)

Largemouth Bass Lepomis gibbosus (Linnaeus)

Pumpkinseed Lepomis macrochirus Rafinesque B1 uegi.l1 Ambloplites rupestris (Rafinesque)

Rock Bass TOTALS Total Number Captured 190 19 1

12 195.

1 133 20 1

1 12

.494 229 48 70.

8 48 16 103 1602 Total Weight In Grams 129514 91765 473 913 2062 16 208 6500 76 400 5818 1360 58551 25338 30522 16693 3457 4490 3585 13246 394987 Weight Extremes In Grams 0.5-1408" 138-8500 473 35-170 7-15 16 0.05-2.6 32-733 76 400 162-846

. 1360 4-410 7-350 51-1156 4-1470 23-2040 2.7-843 3-383 2.1-302 Length Extremes In Millimeters33-507 195-740 332 137-225 73-128 112 17-68 140-375 180 400 282-508 1750 64-308 90-290 185-490 70-490 110-507 57-420 56-240 51-250

-153-

TABLE 8.5 FISHES OF THE CONNECTICUT RIVER IN THE VICINITY OF VERNON, VERMONT ALL COLLECTIONS NORTH OF VERNON DAM 1980 Spedies White Sucker Carp Golden Shiner Spottail Shiner Silvery Minnow American Eel White Perch Yellow Perch S.tation Capture No.

Method 4

Trap Net Gill Net S.

Trap Net Gill Net 8

Trap Net Gill Net 4

Trap Net Gill Net 5

Trap Net 6111 Net 4

Trap Net 5

Trap Net 4

Trap Net 5

Trap Net 4

Trap Net 4

Trap Net 4

Trap Net Gtll Net 5

Trap Net Gjll Net 8

Trap Net Gill Net 4

Trap Net Gill Net S

Trap Net Gill. Net 8

Trap Net GilI Net 4

Trap Net Gll Net 5

Trap Net Gill Net 8

Trap Net Gill Net 4

Trap Net GilI Net 5

Trap Net Gill Net 8

Trap Net Gill Net 4

Trap Net 4

Trap Net Gill Net 5

Trap Net 4

Trap Net 5

Trap Net 5

Trap Net 8

Trap Net No. of Coll.

8 4

4 2

1 4

41 1

1 31 7

5 2

1 2

13 4

5 2

1 2

13 2

4 2

2 4

7 4

1 2

1 1

6 3

42 2

2 5

6 3

2.

3 1

3 1

NO.

Fish 13 19 12 3

1 6

4 3

1 3

3 6

193 2

1 1

134 59 234 20 19 3

73 28 29 24 18 6

15 12 1

13 11 8

3.

10 5

6 2

7 8

6 4

4 1

5 1

Weight Grams 6439 11417 8717 1856.

845 3584 13387 16220 5220 18930 213 338 2042 20 16 1360 16678 11558

.17353 2986 3803 687 7336 2754 2454 2877 197 474 10265 7100 51 8464 1022.

746 1348 529 2400 411.

4840 195 3432 488 679 340 606 231 640 186 Species Totals No.

Weight.

54 32858 11 53757 9

195 1

1 469 178 551 2062 16 1360 53065

-.-.;i L*

16092 Walleye Smallmouth Bass Largemouth Bass Pumpkinseed Bluegill Rock Bass 43 27648 34 7

18 5

6 9723 3432 1507 837 826 TOTALS NORTH OF VERNON DAM 1031--

203734

-154-

TABLE 8,6 FISHES OF THE CONNECTICUT RIVER IN THE VICINITY OF VERNON, VERMONT.

ALL COLLECTIONS SOUTH OF VERNON DAM.

1980

.Species White Sucker Carp FalIfish Golden Shiner Juvenile Cyprinidae Brown Bullhead Yellow Bullhead Northern Pike Chain Pickerel White Perch Yellow Perch Walleye Smallmouth Bass Largemouth Bass Pumpkinseed Bluegill Rock Bass Station Capture No.

Method 3

Trap Net Gill Net Seine 3

Trap Net Gill Net 3

Gill Net 3

Trap Net 3

Seine

.3 Trap Net Gill Net 3

Gill Net

• 3 Gill Net 3

Trap Net Gill Net 3

Trap Net.

Gill Net 3

Trap Net Gill Net 3

Trap Net 3

Trap Net-Gill Net 3

. Trap Net 3

Trap Net Gill Net 3

Trap Net Gill Net 3

Trap Net Gill Net No. of Coll.

18 4

1

• 1 4

1 3

1 6

1 1

3 6

14 1

5 1

5 13 4

1 10 4

5 1

19 4

No.

Fish 107 14 15 1

7 1

3 133 191 1

.3 9

24 1

46 5

5 29 7

1 22 8

10 1

85 12 Weight Grams 85837 10812 7

6120 31888 473 362 208 6191 309 76 400 1462 4356 5220 266 8266 980 2874 5224 1746

.25 2563 420 2632 116 10668 1752 Species No.

136 8

1 3

133 20 1

1 12 25 51 5

36 1

30 11 Totals Weight 96656 38008 473 362 208 6500 76 400 5818 5486 9246 2874 6970 25 2983 2748 97 12420 TOTALS SOUTH OF VERNON DAM 571 191253

-155-

~

TABLE 8.7-1 FREQUENCY DISTRIBUTION OF FISH SPECIES BY TOTAL LENGTH 1980 I

Ln I

Total.

SMALLMOUTH.

Length WHITE PERCH YELLOW PERCH BASS PUMPKINSEED BLUEGILL ROCK BASS (mm-)

No.

-Wt.g No.

Wg,()

NO:

Wgt,(g)

No.

Wqt(g No.

Wgt(g No.

Wgt.(g)i

.0-20 21-40 41-60 3

11 1

3 5

21 61-80 132 1063 2

10 2

7 1

11 81-100 57 588 25

.231 5

48 1

25 101-120 3

66 3

46 3

55 10 522 6

186

.121-140 2

55 1

36 15 985 14 724 141-160 8

454 15 716 2

77 8

835 1

116 3

244 161-180 32 2534 31 "1940

.10."

659 8

-. 1114 1

144 24 2772

.181-200.

31 3317 42 3835 9

883 1

173 2

357 20 2985 201-220 37 5075 43 5490 8

975

6.

1302.

22 4447 221-240 78 15487 35 5713 4

712 5

1663 6

1529 241-260.

93 23093 29 6091

.7 1584 1

302 261-280 18 5699 4

890 3

955 281-300 2

710 1

350 5

1662 31T-320 1

410

'3 1176 321-340 1

500 341-360 3

2046 361-380 2

1344 381-400.

401-420 1

843 421-440 1

1070 441-460 1

1467 461-480 481-500 1

• 1470 TOTALS 494.

58551 229 25338

70.

16693 48 4490-16 3585 103 13246 t

TABLE 8.7-2 FREQUENCY DISTRIBUTION OF FISH SPECIES BY TOTAL LENGTH 1980 Total WHITE SUCKER CARP WALLEYE

.Length-.

(m)

No.

"Wgt.(.g)

No.

Wgt.(g)

No.

Wgt.(g) 0-20 21-40 is 7

41-60 61-80 81-100 101-120 3

37 121-140 1

15 141-160 161-180 1

54 181-200 1

138 1

51.

707-220 1

131.

221-240 237 241-260 2

386 261-280 3

703 281-300

. 3 954 301-320 7

2633 321-340 9

3958 4

1379:

341-460 16 8091 3

1059 361-380 16 10147 5

2401' 381-400 20 14067 8

4224.

401-420 28 22151 7

4502.

421-440 28 25091 11 7843 441-460 15 15505 3

2704 461-480 13-14555 5

5209 481-500 7

8384 1

1150 7501-520 2

2645 521-540 541-560 561-580 581-600 1

2950 601-620 621-640 641-660 3

14960 661-680 1 1 4880 681-700.

6 30960 701-720 2

11110 721-740 4

26530 TOTALS

-190 129514 19 91765 48 30522

-157-

GRAMS LBS.

(xID00) 200

-y 400.-

350 -

300-1--

_250-

< 200-I-I ISO -

160 -

140 -

120 -

100-80-60-40-20-RESIDENT FISH SPECIES COMPOSITION BY WEIGHT 1980 SURVEY 150 -

100 -

50-0]

O-I.-

0 I-

/

/// 7

/ ~7/A7777Z7~7

/

0 1000 900 B00 700 600 500 400 300 200 "100 0

E2 ML g"

w Or L

a:

w 0

W 0-0,,

hi -

-o o

3-.

0 0

X.

wiHn al0 2-9h ILb 3AW FIGURE 8.2 RESIDENT FISH SPECIES COMPOSITION, BY NUMBER 1980 SURVEY 40C Up LP IX 2)2L z4 FIGURE 8.3

-159-en 2

hi Li 4.

U>

hi.3 b.h.

2 0l a-e.

.J 10e hin.e 1 i.j.

RESIDENT FISH SPECIES PERCENTAGE COMPOSITION BY WEIGH 100 90 80 70 60 50 40 0-z w

cr.

I--

w a.

10.

.*z...

,..,.:÷ r"

T*

• .f nnffiflf*.

Q.

U)

Ha~.

0 I.

3o 20 I0 0

a) a,

4.

=

-V.

I.-

, 17

o.

VY 0,

W.4 lu..

0c wJ*

it =

0 z

w 0

Em

>.0o 0

1--~~~

~~~

2 Lr twa.x LC 00 00 a.&w a)

U)

FIGURE 8.4 I

I

r~ r~ r~

ri E -iU---"'E N t" ". "F IS f i -" -'- ' 'ki I Ey -

-I PERCENTAGE COMPOSITION BY NUMBER 100 90 80 70 60 50 40 LU z

w w

(L I

I-20 I0 0

HI U)

)U U) W q.

2CL 0Mqz w

U) t m l

w

~

CD) -Z CL~

40

04.

a.L 0

002.

o~-1 20 U.)

w 0.

C17 FIGURE 8.5

TABLE 8,8:

AGE-GROWTH -DATA WHITE PERCH.

ALL COLLECTIONS Number 1969 1973 1980 of Number Total Length (mm)

Number Total Length (mm)

Annuli Specimens Average Extremes Specimens Average. Extremes 0

47 91 62-130 31 91 64-106 1

8,

178 169-194 44 180 125-225 2

94 202 155-245 54 211 157-245 3

253 231 175-276 68 226 160-273

• 4 112 244 204-303 47 234 195-260

.5 18

.267 239-311 62 250 210-281

`6'*

5 284 270-308 23 260 237-308 7

-T 3

254 242-270 COLLECTIONS NORTH OF VERNON DAM Number 1969 1973 1980 of Number Total Length'(mm)

Number Total Length (mm).

Annuli Specimens *Average Extremes Specimens Average Extremes 0

43 90 62-130 30 91 64-106 1

7.

176 169-180 42 178 125-210 2

64 198 155-235 51 211 157-245 3

118 224 175-276 60 224 160-260

.4 48 239 204-285 45 234 195-260 5

12 269 247-311 56 250 214-281 6

4 278 270-296' 21 258 237-285 7

0 3

254

.242-270 COLLECTIONS SOUTH OF VERNON DAM Number 1969 - 1973 1980 of Number

-Total Length (mm).

Number Total Length. (rmn(

Annuli Specimens Average Extremes Specimens Average Extremes 0

4.

92 68-110 1

96 1

1 194 2

213 201-225 2

30

.210 178-245:5 3

220 208-242.

3 135 235.

186-270 8

242 205-273 4

64

. 247 213-303 2

248 242-253 5

.6 263

.239-285 6

255 210-280 6

1 308 2

281 254-308 7

0 0

-162-

C U

U L...

i I.

AGE-GROWTH GRAPHS -

WHITE. PERCH zLd mm.

1n..

350-

_ 13 300 --

12 250 --

0

-9 200' 8

7 150 --

6

-5 00-4 3

50-2

0)

.0.

N a

ý*

-,.; -0 1969-1973 1980 0

2 3

4 5

• 6 7

NUMBER OF ANNUL!

ORTH AND SOUTH OF VERNON DAM mm.

350 -

300 -

250 -

200 -

150 -

I00 -

I-z

_j in.

--13 7-10 L9 9

-7

-- 6i

-5t

-4

-3

--2

-I

--0[

mm.

350 -

300 -

250-200 -

150 -

100 -

50-0-

in.

-13

-12

-II

-I0

-9

-8 7

6

'5

-4

-3

-2

-1

-0 0

~0 I -

50-0-

0 I

2 3

4 5

6 NUMBER OF ANNULI NORTH OF VERNON DAM 7

I

. 2 3

4 5

6 NUMBER OF ANNULI SOUTH OF VERNON DAM 7

FIGURE 8.6

... _-163-.

TABLE 8.9 AGE-GROWTH DATA -

YELLOW PERCH-ALL COLLECTIONS Number 1969 -

1973 1980 of Number Total Length (mrm)

Number Total Length (mm)

Annuli Specimens Average Extremes Specimens Average Extremes 0

45 81 45-118 18 96 90-110 1

44 122 67-183 11 156 138-170

.2 80 192 156-235

87.

.189 148-226 3

71 216 158-249 64 223 190-257 4

74 234 208-266 18 238 205-290 5

50 251 217-280 1.3 252 230-275 6

23 270 225-295 2

246 235-256 7

9 281 265-302 0

8 2

285 0

9 0

0 10 1

305 0.

COLLECTIONS NORTH OF VERNON DAM Number

-1969 -

1973 1_980_'_'19 of Number-Total Length (mm).

Number Total Length.(mm)'"

Annuli d Average Ext*remeS Sp cimens Average Extremes 0

22 83 45-118 18 96 90-110 1

30 126 67-183 11 156 138-170 2

73 190 156-235 73 187 152-226 3

49 218 170-249 35 213 190-250

• 4 37 232 208-266 12 230' 206-260 5

22 251 217-271 11 250

.230-275 6

4 271' 261-282

2.

246 235-256 7

2 269 265-272 0

8 2

285 0

9 0

0 10 1

305.

0 COLLECTIONS SOUTH OF VERNON DAM Number 1969 -

1973 1980 of Number,,

Total Length (mm)'

Number Total Length (mm)

Annuli Specimens" Average Extremes Specimens Average

. Extremes 0

23 80 47-101 0

1 14 115 101-156 0

2 7

209 174-230 14 201 148-223 3

22 212 158-241 29 235 207-257 4

37 237 211-262 6

252 228-290 5

28 250 230-280 2

262' 250-275 6

19

.270 225-295 0

7

'7 285 267-302.

0 80 0

9 0

0 10

-0 0----

-164-

AGE-GROWTH GRAPHS -

YELLOW PERCH mmn.

350 -

300-

.5-CD w

-J 250 200-150

.An.

-13

-II

-I0

-9

-8

-7

-6

-5

-4

'3

-2

-I 100 -

50-0-

1969 -1973 1980

().

I NORTH mm.

in.

3 2O 1--

10 13 O0J.-

12 50 --

0

-9 7

50 --

6

-5 0-4

-3*

.2 50 -

-'ý2

-1 0-- 0 I

I I

I I

I I

I 3

4 5'6 7

8 9

10 MBER OFANNULI

) SOUTH OF VERNON DAM mm.

in.

350

-13 300 --

12

-II 250 --

1o

- 9

-5 100 - -4/

3--

50 -

-2 0-0 I

I I

i I

I i

I I I 0

1 2

3 4

5 6

7 8

NUMBER OF ANNULI NORTH OF VERNON DAM 9

10 0

1 2

3.4 5

6 7

8 NUMBER OF ANNULI SOUTH OF VERNON DAM 9

I0 FIGURE 8.7

-165-

TABLE 8.10 AGE-GROWTH DATA -

WALLEYE ALL COLLECTIONS Number 1969 -

1973 1980 of Number Total Length (mm)

Nmber Total Lelngth (mm)

.Annuli Specimens Average Extremes Specimens Average Extremes 0

4 158 129-180 1

185 1

8 216 163-275' 0

2 16 306 246-362 1

335 3

28 343' 242-392 8

369 337-395 4

29 308 321-407 12 406 335-452 5

15 37.7 303-425 17 421 352-480' 6

6 436 390-480

5.

438 400-470 7

3 484 425-527 1 4

467 425-512 COLLECTIONS NORTH OF VERNON DAM Number 1969 -

1973 1980 of Number Total Length (m)-

-Number Total Length (mm)

Annuli Specimens Average Extremes Specimens Average Extremes 0

1 186 1

185 1

5 205 163-260 0

2 12 299 246-362.

1 335 3

16 346 29'1-392" 7

374 337-395 4

18 37c.

321-407 10 415 380-452 5

11.

3'89 364-425 16 422 3$2-480 6

5 446 409-480 5

438.

400-470 7

1

.527 3

45.9 425-512 COLLECTIONS SOUTH OF VERNON DAM Number 1969 -. 1973 1980 of Number Total Length (mm)

Number Total Length (mm)

Annuli Specimens Average Extremes Specimens Average Extremes 0

3 149 129-18.0 0

1 3

234.

176-275.

0 2

,A 326 303-337

0.

3 12 338 242-380 1

340 4

11 367 331-402 2

360 335-385 5

4.

347 303-383 1

400 6

1 390.

0 7

2 463

.425-501 1

490

-166-

Jr AGE-GROWTH GRAPHS -

WALLEYE mm.

600.

500 -

400.

k.-

0 300

-J.

200-150-S00 50-0-

in.

S22 "20

-18.

-16

-14

-12

-to

-8

--6 4

-2 0

1969-1973 1980 I

I I*

I I

I I

I I

-0

.I -

I.

I I

I.

I I

I 0

I 2

3 4

5 6

7 a

NUMBER OF ANNULI NORTIH AND SOUTH OF VERNON DAM 3

mm.

500-400 -

I4. -

3`00 n.ir

!-22

-'20

- 18

-16

-14

-12

-8

-6

-4.

-.2

/'I/

rmm.

in.

800-_

- 22 500 --

20 Is 400 --. 16 14 300 --

12

.200--

8 00 4-r 2--

0-0

~0

~~0

.1' A

/1 a

j i

i i

i a

c I "

I t I

) I.2 3

1 I

I 1

I 4

5 6

7 8

I I

0.

I NUMBER OF ANNULI NORTH OF.VERNON DAM I

I I

I 1

1 2

3

.4 5

6 7

NUMBER OF ANNULI SOUTH OF VERNON DAM 8

FIGURE 8.8

-167-

TABLE 8.11 AGE-GROWTH DATA -

SMALLMOUTH BASS ALL COLLECTIONS Number 1969.-

1973 1980 of Number Total Length (mm)

Number Total Length (mm)

Annuli Specimens Average Extremes Specimens Average Extremes 0

16 68 45-102 6

82 10-95 1

25 164 108-213 14 153 94-194 2

31 206 161-255 14 195 150-218 3

59 239 197-293 12 253 212-290 4

50 275 220-315

.9 270 200-310 5

36 305 262-350 7

326 278-360 6

16 346 305-376 0

7 4

370 343-406 2

374 372-375 8

1 357

-0 9

2 412 398-425 3

461 432-490 10 0

-0 11 1

411 0

COLLECTIONS NORTH OF VERNON DAM Number 1969 -

1973 1980 of Number Total Length (mm)

Number Total Length (mm)

Annuli Specimens Average

• Extremes Specimens Average _*Extremes 0

5 50 45-57 2

85:

1 21 161 108-213 5

.156 145-188 2

29 205 161-255 9

190 150-218 3

44 235 197-293 3

246 220-290 4

23 272 220-315 6

281 200-310 5

23 300 262-339

.3 335 315-360 6

12

.339 305-362 0

7 2

386 365-406 2

374 372-375 8

0 0

9 1

398 2

475 460-490 10 0

.0 ii 0

0 COLLECTIONS SOUTH OF VtRNON DAM Number 1969 -

1973 1980 of.

Number Total Length (mm)

Number Total Length (mm)

Annuli Specimens Average Extremes Spetimens Average. Extremes 0

ii 76-*

51-102 4

81 70-95 1

4 173 150-207 9

151 94-194 2

2 225 211-238 5

204 195-212 3

15 252

• 232-274 9

256 212-290 4

27 279 245-305 3

148 240-260 5

13 312 290-350 4

320 278-360 6

4 346 352-376 0

7 2

354 343-364 0

8.

1 357 0

9 1

425 1

432 10 0

0 11i 1

.411 0

o

-.. r

°...

r.-

,..i

.I

-168-

AGE-GROWTH GRAPHS-- SMALLMOUTH BASS mm.

in.

450 -

400 1

350 --

14

'300 --

12-If2It 0

2!50 10

=I.

0z r!

4" 200-8 150--

6 r"

100-4 1969 -1973 1980 50 2

i;0 1

2 3

4 5

6 7

a 9

10 11 NUMBER OF ANNULI NORTH AND SOUTH OF VERNON DAM mm.

in.

• mm.

in.

450 450-400-- 16 400--

16 350 14 350-14 300-12

/300--1 250 10 250 10 o200-8

-P,.00oo_-8 s

350 6

150-- 6 100--4 loo0 4

50-2 50--

2 0

_ 0

-I A

j I

Il0 0

I 1

0 0

0 1

2 3

4 5

6 7

8 9

10 11 0

1 2

3 4

5 6

L NUMBER OF ANNULI NUMBER OF NORTH OF VERNON DAM SOUTH OF VERI F

FIGURE 8.9 7

8 9

10 II ANNULI NON DAM

LITERATURE CITED APHA et al.

1976.

Standard methods for the examination of water and-was--tewater..

14th edition.

Published jointly by American Public Health Association, American Water Works Association and-Water Pollution Control Federation; Washington, D.C.

Aquatec, Incorporated.

1973.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report II, June 1971-December 1972.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1974.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report III, January-December 1973.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1975.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report IV, January-December 1974.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1976.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report"V, January-December 1975.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1977:*

Ecological atudies of the Connecticut River, Vernon Vermont.

Report VI, January-December 1976.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1978.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report VII, January-December 1977.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1979a.

Ecological studies of the Connecticut River, Vernon, Vermont.

Report VIII, January-December 1978.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1979b.

Hydrothermal and biological studies, Connecticut River, Vernon, Vermont.

Phase V October 1977-May 1978.

Report prepared for Vermont Yankee Nuclear Power Corporation.

1980.' Ecological studies of the Connecticut River, Vernon, Vermont.

Report IX, January-December 1979.

Report prepared for Vermont Yankee Nuclear Power Corporation.

Webster-Martin, Incorporated.

1971.

Ecological studies of the Connecticut River, Vernon, Vermont.

Preoperational report.

Report prepared* for Vermont Yankee Nuclear Power Corporation.

-171-