ML19105B116

03/02/1976 Semiannual Operating Report for July 1 Through December 31, 1975, Volume I

ML19105B116
Person / Time
Site:	Surry
Issue date:	03/02/1976
From:	Virginia Electric & Power Co (VEPCO)
To:	US Atomic Energy Commission (AEC)
References
Download: ML19105B116 (357)

Text

Cotff~t.. 4 ~~~~

bTb e~ 3 ... ;,. ~, ~

SEMIANNUAL OPERATING REPORT 1, 1975 through December 31, 1975

• UNIT NOS. 1 and 2 SURRY POWER STATION DOCKET NOS *Efl§/and 50-281 LICENSE NOS. DPR-32 and DPR-37 Volume 1

- NOTICE -

THE. ATTACHED FILES ARE OFFICIAL RECORDS OF THE DIVISION OF DOCUMENT CONTROL. THEY HAVE BEEN CHARGED TO YOU FOR A LIMITED TIME PERIOD AND MUST BE RETURNED TO* THE RECORDS FACILITY BRANCH 016. . PLEASE DO NOT SEND DOCUMENTS CHARGED OUT THROUGH THE MAIL. REMOVAL OF ANY PAGE(S) FROM DOCUMENT FOR REPRODUCTION MUST BE REFERRED TO FILE PERSONNEL.

DEADLINE RETURN DATE*

RECORDS FACILITY BRANCH

TABLE OF CONTENTS

-~-

1.0 INTRODUCTION

PAGE NO.

.1.0-1 2.0 .NONRADIOLOGICAL MONITORING PROGRAM - THERMAL AND PHYSICAL 2.0-1 CHARACTERISTICS 2.1 Temperature Monitoring Stations 2.1-1 2.1.1 Temperature Monitoring Stations In the 2.1.1-1 James River 2.1. 2 Intake Canal Monitoring Station 2.1.2-1

. 2.1.3 Discharge Canal Monitoring Station 2 .1. 3-1 2.2 Salinity Monitoring 2.2-1 2.3 Fresh Water Discharge of the James River at Richmond 2.3-1 and Hog Island 2.4 Monitoring of Chlorine in the Discharge Canal 2.4-1 2.5 Chemical Release to the Cooling Water System 2.5-1 3.0 NONRADIOLOGICAL MONI.TORING PROGRAM - BIOLOGICAL 3.0-1 3.1 Plankton 3.1-1 3.2 Attached Benthic Community 3.2-1 3.3 Epibenthos 3.3-1 3.4 Nekton 3.4-1 3.5 Planktonic Organisms 3.5-1 3.6 Fish Mortalities* 3.6-1 Appendix 3.0.A 3.0.A-l 4.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM 4.0-1 5.0 STATION RADIOACTIVE EFFLUENT RELEASES AND SOLID RADIOACTIVE 5.0-1 WASTES 6.0 FUEL SHIPMENTS 6.0-1 7.0 SUNMARY OF OCCURRENCES IN WHICH TEMPERATURE LIMITATIONS ON 7.0-1 CONDENSER COOLING WATER DISCHARGE WERE EXCEEDED i

TABLE OF CONTENTS (CONTINUED)

PAGE NO.

8.0 CHANGES IN STATION ORGANIZATION 8.0-1 9.0 OCCUPATIONAL PERSONNEL RADIATION EXPOSURE 9.0-1 9.1 Whole Body Exposure 9.1-1 9.2 Personnel Receiving Greater Than 500 MREM 9.2-1 9.3 Whole Body Exposure - Annual 1975 9.3-1 10.0 UNIT NO. 1 OPERATING

SUMMARY

10. 0:...1 10.1 Power Generation 10. 0-1 10.1.1 Power Generation Summary 10.1-1 10.1.2 Power Generation Histogram 10.1-2 10.1.3 Pre-Colillilercial Operating Statistics 10.1-3 10.1.4 Combustion Turbines Power Generation 10.1-4 10.2 Outages 10.2-1 10.3 Changes in Facility Design 10. 3-1 10.4 Performance Characteristics 10.4-1 10.4.1 Abnormal Occurrences 10.4-2 10.4.2 Unusual Safety Related Events 10.4-1 10.4.3 Equipment Performance 10.4-1 10.4.4 Fuel Performance 10.4-4 10.5 Changes in Procedure 10.5-1 10.5.1 Administrative Procedures 10.5-3 10.5.2 Abnormal Procedures 10.5-4 10.5.3 Annunciator Procedures 10. 5-.5 10.5.4 Chemistry and Health Physics Procedures 10.5-6 10.5.5 Emergency Procedures 10.5-7 10.5.6 Maintenance Procedures 10.5-1 10.5.6.1 Mechanical Maintenance Procedures 10.5-8 10.5.6.2 Electrical Maintenance Procedures 10. 5-9 10.5.6.3 Instrument Maintenance Procedures 10. 5-10 10.5.7 Operating Procedures 10.5-2 10.5.7.1 Operating Procedures 10.5-11 10.5.7.2 Maintenance Operating Procedures 10.5-12 10.5.8 Periodic Test Procedures 10. 5-13 10.5.9 Start-Up Test Procedures 10.5-14 10.5.10 Special Test Procedures 10.5-15 ii

TABLE OF CONTENTS (CONTINUED)

PAGE NO.

10.6 Maintenance 10. 6-1 10.6.1 Mechanical 10.6-2 10.6.2 Electrical 10.6-3 10.6.3 Instrument 10.6-4 10.7 Results of Surveillance Tests 10.7-1 10.8 Periodic Containment Leakage Test 10.8-1 10.9 Changes, Tests, and Experiments Requirins Authorization 10.9-1 From the U.S. Nuclear Regulatory Commission 10.9.1 Technical Specification Changes 10. 9-2 10.9.2 Tests or Experiments 10.9-1 10.9.3 Facility Design Changes 10.9-1 10.10 Tests and Experiments Not Requiring Authorization From 10.10-1 the U. S. Nuclear Regulatory Commission 11.0 UNIT NO. 2 OPERATING

SUMMARY

11.0-1 11.1 Power Generation 11.0-1 11.1.1 Power Generation Summary 11.1-1 11.1.2 Power Generation Histogram 11.1-2 11.1. 3 Pre-Commercial Operating Statistics 11.1-3 11.2 Outages 11.2-1 11.3 Changes in Facility Design 11.3-1 11.4 Performance Characteristics 11.4-1 11.4.1 Abnormal Occurrences 11.4-2 il.4 .2 Unusual Safety Related Events 11.4-1 11.4.3 Equipment Performance 11.4-1 11.4.4 Fuel Performance 11.4-3 11.5 Changes in Procedures 11.5-1 11.5.1 Administrative Procedures 11.5-1 11.5 .2 Abnormal Procedures 11.5-1 11.5 .3 Annunciator Procedures 11.5-1 11.5 .4 Chemistry and Health Physics Procedures 11.5-1 11.5.5 Emergency Procedures 11.5-1 11.5. 6 Maintenance Procedures 11.5-2 11.5. 6 .1 Mechanical Maintenance Procedures 11.5-2 11.5.6.2 Electrical Maintenance Procedures 11.5-2 11.5. 6 .3 Instrument Maintenance Procedures 11.5-2 11.5.7 Operating Procedures 11.5....:2 iii

TABLE OF CONTENTS

( CONTINUED)

• 11.5 .8 11.5.7.1 11.5.7.2 Operating Procedures Maintenance Operating Procedures Periodic Test Procedures

.PAGE NO .

11.5-2 11.5-2 11.5-2 11.5. 9 Start-Up Test Procedures 11.5-2 11.5 .10 Special Test Procedures 11.5-2.

11.6 Maintenance 11.6-1 11.6.1 Mechanical 11.6-2 11.6.2 Electrical 11.6-3.

11.6.3 Instrument 11.6-4

11. 7 Results of Surveillance Tests 11. 7-1 11.8 Periodic Containment Leakage Test 11.8-1 11.9 Changes, Tests and Experiments Requiring Authorization 11.9-1 From the U. S. Nuclear Regulatory Commission 11.9 .1 Technical Specification Changes 11.9-1 11.9 .2 Tests or Experiments 11.9-1

11. 9. 3 Facility Design Changes 11. 9-1 11.10 Tests and Experiments Not Requiring Authorization 11.10-1 From the U. S. Nuclear Regulatory Commission 12.0 INDEX 12 ,1 -1 12.1 Index by Section Number 12.1-1 12.2 Index by Technical Specification Number 12.2-1 iiii

1.0 INTRODUCTION

• This report is submitted to the Nuclear Regulatory Commission pursuant to Surry Power Station, Unit Nos. 1 and 2, Technical Speci-fication 6.6, "Station Reporting Requirements", which states:

A. Routine Operating Reports A report covering a six-month period shall be submitted in writing to the D.irector of the Regional Regulatory Operations Office within 60 days after January 1 and July 1 of each year.

The due date of the first report shall be determined from the date of initial criticality and shall cover the period from the date the operating license was issued to the end of the report period. Such reports are due within 60 days after the end of each reporting period.

The information reported herein also satisfies additional reporting requirements established in other technical specifications and the Nuclear Regulatory Commission. In order to facilitate the referencing of material in this report with the applicable reporting requirements, an index cross-referencing the report section number and the reporting requirement is given in Section 12.0.

1.0-1

2.0 NONRADIOLOGICAL MONITORING PROGRAM - THERMAL AND PHYSICAL CHARACTERISTICS 2.0-1

2.1 TEMPERATURE AND SALINITY MONITORING Summary Temperatures are monitored continuously at points in the James River at thirteen (13) stations (Figure 2.1.1-1) of the tidal segment encompassing Hog Point. Near surface and bottom temperatures are recorded as indicated on the figure.

Salinity is continuously monitored at the station intakes.

Results The results of the temperature and salinity monitoring programs are summarized in Sections 2.1.1, 2.1.2, and 2.1.3.

The licensee has had some difficulties with data loss from the temperature monitoring instruments manufactured by the Environ-mental Devices Corporation (ENDECO). The problems associated with these instruments have been discussed in reports to the. Region II-Office of Inspection and Enforcement.

Data missing due to failure of the ENDECO instruments are supplied from the older Taylor circular chart recorders, whenever possible.

2.1.1

2.1.1 TEMPERATURE AND SALINITY MONITORING STATIONS IN THE JAMES RIVER Tables 2.1.1-1 and 2.1.1-2 summarize results of the temperature and salinity monitoring program in the James River. The monthly means of the daily highs, lows, and means are reported for each month of the reporting period.

2.1.1-1

.Figure 2.1.1-1 TEMPERATURE MONITORING STATIONS SURRY POWER STATION

~

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(i)

G

~ GJ G)

G) w HOG ISLAND ~*

(3

""="

I 0 2 Nautical Miles

. 1 . . L . L - - - - - - L - - - - -...

1000 0 1000 2000 3000 Yards LEGEND JAMES RIVER

/

1. .SE21 NT

2. SEITAT

3. SC2TCT,B

4. SCITBT

5. SB3TFT,B e 6.

7.

SB2TET, B SBITDT 0 Near Surf ace .Temperature

8. SAITGT ~ Near Surface and Botto~ Temperature

9. SA2BAT 1o. SD2BDT *

11. SDIBCT,B

12. SD3BBT .

13. SA3GRT 2.1.1-2

Figure 2.1.1-2 TEMPERATURE AND SALINITY MONITORING STATIONS t

-N-I HOG '\

\

I SLMID \

\

\

\

\

\

\

\

\

\

\

~------~---1---~------~

~o SURRY POWER STATION O _____;...____

........~......_......L....LJ..._ 2 Nautical Miles

~

JAMES RIVER 1000 O 1000 2000 3000 Yards LEGEND:.

6. Monthly Salinity - Temperature Profile Station

- o o*

Continuous Salinfty - Temperature Monitoring Station Near Surface Temperature Monitoring Station Near Surface and Bottom Temperature Monitoring Station Boat Cruise 2.1.1-3

Table Z.1.1-1

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TABLE 2.1.1-2 SALINITY DATA Monthly Means, Lows, and Highs of Mean Daily Values in Parts Per Thousand at 25° Celsius MONTH MEAN LOW HIGH 7 3.4 0.8 6.7 8 5.0 2.0 6.4 9 4.2 1.0 7.0 10 1.8 0.9 3.4 11 3.5 2.3 5.0 12 4.8 3.8 5.9 2.1.1-5

2.1.2 INTAKE CANAL MONITORING STATION Table 2.1.2-1 summarizes the data recorded at the intake canal temperature monitoring station as column SE2INT. Temperatures from other river stations are given for comparison. Values shown are monthly means of daily highs, lows, and means in degrees Celsius.

2.1.2-1

e e Table 2. l. 2-1

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• Instrument malfunction

• • Instrument malfunction, best avai ]able_ estimate. ________ -----------------------------*-**_****-**----

e 2.1.3 DISCHARGE CANAL MONITORING STATION Table 2.1.3-1 summarizes the data recorded at the discharge canal temperature monitoring station as column SA3GRT. Temperatures from other river stations are given for comparison. Temperatures shown are monthly means of daily highs, lows, and means iri degrees Celsius.

2.1.3-1

• e Table 2.1.3-1

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2.2 SALINITY AND TEMPERATURE SPECIAL SURVEYS

<e Summary The salinity and temperature monitoring program encompasses the segment of the James River Estuary which extends from the southern shore of Jamestown Island to below the intake of the Surry Power Station.

The horizontal and vertical salinity and temperature of this tidal segment is determined at monthly intervals as follows: Cruises are conducted at slack before flood tide. A four (4) station transect, which is between the intake structure and Skiffes Creek, is sampled from surface to bottom at two (2) meter intervals. A second transect is made near the upper limits of the segment, the exact location of which is based on the salinity regime of the system. The approximate locations of the sampling stations and the cruise route are shown on T.S. Figure 2.2-1.

Results Monthly temperature and salinity surveys were conducted at eleven (11) sampling stations as shown in Figure 2.2-1. Data obtained from these surveys are summarized in graphical form in Figures 2.2-2 through 2.2-13.

Conclusions The salinity in this segment of the river varied between O and 8.3 parts per thousand (ppt) during the reporting period. There is no measurable difference in salinity occurring as a result of the diversion of water through the cooling system. Therefore it is concluded that the operation of the station had no significant effect on the salinity structure of the James River.

Temperature readings taken in conjunction with the salinity surveys are also presented.

2.2-1

$URRY ' )

POWER STATION

~

t

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l.

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Flood Ebb JAMES.

RIVER

\

HOG \

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ISLAtlD \

\

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\

\

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1------1---L--1------1 \

COBHAM SURRY POWER BAY STATION 0 I 2 Nautical Miles JAMES RIVER 1000 0 1000 2000 3000 Yards

~ Sampling Stations 2.2-2

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK I

1.5 4. 3 ..

0 I 1.5 I 4.5 14.4 2 0.7 I I 0. 9 I 1.6 I 2.8 I 3,9 U) I 1. 3 I 4, 2 -*

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a. I 5,0 w 1. 4 0 5,9 15, 1 8 1. 2 ' l. 3 I 1. 7 2.8 0 0*5 1*5 2 SALINITY ( ppt) 10 AT MONITORING STATIONS NAUTICAL MILES July 1975

JAMES RIVER JAMESTOWN ISLAND TO SKI FFES . CREEK

.I .

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I 80.2 .

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80. 1 I 80.2 I 80, 1 FLOOD 80.6 N

~4 I

.. c? I 180.8 w I

I 80.2 EBB,. I 80.4 z I 80.2

c I 80.4 .

I- 6 80. I I I 80.2 I 80. I I 80 .. 6 180.6

a. I 80.2 w

a

80. l I 80.2 8 80.2 I I 80. l 80.6 0 0*5 1*5 2 TEMPERATURE (°C) 10 NAUTICAL MILES AT MONITORING STATIONS July 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK 3~0 0 5 0 I 2. 7 .

I 0. 7

,3.0 2 0 I IQ I 0.7 I

l. 7 I 2.6 "Tl CJ) IQ I 3.Q -*

(C N er I 3.5 C:

N I

w I - I 3.6 (I)

\Tl I- 14.o .N N

w 4* Q I 10 I 0.8 Flood 1.6 I 2. 7

~

I 0.5

' "'c:?. I I 3.4 I

.i:-

Ebb z I -

c 6 I 5. 1 Q I IQ I 1.0 I l. 7 I 2.7 I-a.. I 3.5 w

Cl 8 15.5 Q I 0 I 1. 1 0 0*5 1*5 2

• SALINITY ( ppt) 10 AT MONITORING STATIONS NAUTICAL MILES August 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK I 84.6

• 0 84.2 I 84. 7 I 83.5 I 84.6 2 82.9 1 I 83. 1 I 83. 3 ' 84. 9 184.4 84.2 Cf) I 83. 3 I c.o 0:: C 85.8 I 84.6 -,

N w I - I CD N

I I-FLOOD I 83.5 .N N

~4 82.6 I I 83. 1 I 83. 3 I 84. 7 *84.o I 4~ V, I 83.]

I 83. 1 EBB"'

z I -

1 83. I

~6 82.9 I I 83. 1 I 83.5 I 84.6. 184.2

a. I 83.5 w

Cl I 83. 1 8 83. I 1

• 82.8 I 83. 5 84.4 0 0*5 1*5 2 TEMPERATURE (°C)

I 10 NAUTICAL MILES AT MONITORING STATIONS lll.!9YS:t 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES

• CREEK I

0.5 2.3 0 5 I 2.0

,2.3 I 0.5 1

2.2 2 QI IQ I 0 I 1* 2 I 2.Q "Tl Cl) I 0 I 2.Q -*

lO a:: .1 2.6 1 2.5 C:

lJ.J Cl)

N I')

I-I 0.5 12.3 .N I

LLJ 4 Q I ,o I 0 Flood I .1. 2 I 2.2 N

~ ""'c?,.. ~

I I 2.2 I 0.5 Ebb z ,2.9

c 6 ,2.4 Q I 10 I 0 I 1. 3 I .2. 2 I-

a. 0.5 I 2.3 LLJ C) 12.5 8 Q I I 0 1. 3 0 0*5 1*5 2 SALINITY ( ppt) 10 NAUTICAL MILES AT MONITORING S_TATIONS Seetember 1975

JAMES RIVER

• JAMESTOWN . ISLAND TO SKIFFES CREEK I ..

78.6 0

I 78, 4 I 78.6 I 79.2 2 78. 4 I I 78, 4 78,6 79, 3 79,5 I I I 79, 2 Cl) I 78. 4 I

lC a:: 81 . 1 I 78,4 C:

"'1 w I 78.6 I ('I) t- 179,0 .

N 78.4 I 78. 4 78.6 FLOOD N

~4 I I

• E2 I 79, 3 I 79,5 '-I I

I 79,2 I 78.4 88,..

z 178.6

r; I 79,2

._ 6 78. 4 I - I 78.4 I 78. 4 I 79,2 I 79,5

a. I 78,8 w

0 I 79,2 8 78. 4 I 78. 4 I 78, 4 79.2 0 0*5 1*5 2 TEMPERATURE (°C) 10 NAUTICAL MILES AT MONITORING STATIONS Seetember 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK r

0 0 5 I O 10 IQ 2 0 I IQ I Q I 0 I Q en 10 N et:

I 0 -*

"Tl (0

C:

10 N

I w IQ I 0 ""I co I-

\.0 w 4 Q 10 Flood *o .N I I 0 I 0

~

I 0

~2 ... I 0 IQ N

00 I

Ebb z 10 10 Q 10

~6 I I 0 I 0 I 0

a. 'o w

Cl 8 10 0 I I 0 0 0 0*5 1*5 2 SALINITY ( ppt) 10 AT MONITORING STATIONS NAUTICAL MILES October 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK

• . I 67.8 0

I 67.6 I 67. 3 I 67.8 2 67. 1 I I 67. 3 67.5 ' 68. o 168.0 I

68.2 ,,

en I 66.9 I

(C N a:: I 67 .6. C N w I 67. 3 I 69. 3 ~

0 I

t- 1 67.8 N

67. 1 I

• 67. 3 FLOOD N

~4 I I 67. 3 ~~

• I 68. 0 168.0 I

\.0 I 68.2 I 66.9 EBB~

z I 67 .6

c I 67,8 t- 6 67. 1 I I 67. 3 I 67. 3 I 68.0 168.0

a. I 68.2 w 66.9 a

I 67.8 8 66.9 I 67.3 I 67. J 68.o 68.o 0 0*5 1*5 2 TEMPERATURE (°C) 10 NAUTICAL MILES AT MONITORING STATIONS October 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK I

3.9 0 0

. I 4.8 I 1. 4 I 5. 3 2 0 I I 0. 5 I l.. 1 I 2,2. I 3.6 "Tl Cf) 10 I 4. 2 -*

le

.NN a:: I 5. 7 .,

C:

w I 1.4 I 3 .. 6 ro.

I t- 6. 7 .N w 4 0 I 0.5 l.5 Flood 2 .. 3 I

I I I 3.8 N

~ ~c? ... I I 5.9 I

10 Ebb 0

z 16.3

c 6 I]. 5 0 I I 0.6 I 1.5 I 2.8 I 3.8 t-a.. I 6.9 w 0.6 0

8 18.3 0 I o.6 I l.5 3,0 0 0*5 1*5 2 SALINITY ( ppt) 10 AT MONITORING STATIONS NAUTICAL MILES November 1975

JAMES RIVER JAMESTOWN ISLAND TO SKIFFES CREEK I 52.2 0

4 I 52.0 I 51, 8 52.2 I 52.0 50,9 r 52,3 2 I I 51. 3 *I 51. 6 1

51. 6 .,,

en I 51. 3 I 51.8 -*

!.O N

a: 52.0 ..,

C N LU 152.2 I I I 51. 8 Cl) f-N 50.9 I FLOOD

• , 52,0 .

N

~4 I 51. 3 I 51, 6 I 51 . 8 151'.6 N I 51. 3 "c?EBB'" I 51.8 I

z 151. 8 J: 152.0 f- 6 50,9 I I 51. 3 I 51.6 I 51.4 151. 6

a. I 52, 0 w 51. 3 Q

152.0 8 50.9 I 151. 6 51. 4 0 0*5 1*5 2 TEMPERATURE {°C) 10 NAUTICAL MILES AT MONITORING STATIONS November 1975

e JAMES RIVER JAMESTOWN

• ISLAND TO SKIFFES CREEK 3,0 0 0.5 4 I 4, 1 I 1* 1 4.2 I 4,7 2 0.6 I I 0.9 I 1. 2 1

2. 3 I 4.5 "TJ Cl) I 0.8 I 4.8 -*

N a:: 5.9 tO C:

N

_.I w I 1. 2 I 4.6 I ""I (D

I-

.>J w 4 0.7 I I 0, 9 I 1. 4 Flood 12. 4 I 6,5 .

N

E I 4.6 N I 0,7 "c:? .. I 5 ,5, N I

Ebb z I 7, 5

t: 6 I 7, 3 0.7 I I 1. 0 I 1.5 ,2. 9 I 4.6 I-

a. 1 6.5 w 0.8 0

8 I 8.0 0.7 I I 1. 5 3,2 0 0*5 1*5 2 SALINITY ( ppt) 10 AT MONITORING STATIONS NAUTICAL MILES December 1975

~-~

JAMES* RIVER JAMESTOWN ISLAND TO SKIFFES CREEK

. I 48.6 0

I 48.4 I 48.0 I 48.2 2 47.81 I 48.0 I 48 .. 2 I 51. 4 I 48.0 "Tl CJ) I 47. 8 I 48.0 -*

I.C

" a:: I 48.2 I 48.2 C:

" w I 48.0 CD

~

~

f-

• FLOOD I 48.Q .

N N

47.81 I 48.0 I 48.0 50. 2 48.Q

~4 o4c? I 1 I 48.0 . w

.....I I 47.8 EBB"'

z I 48. 2

t: I 48.0 t- 6 47.81 I 48.-0 I 48.0 I 48. 6 I 48.0

a. I 48.0 LLJ a t48.0 I 48.Q 8 47,71 *48.0 I 48. 2 t 48.2 0 0*5

• I 1*5 2 TEMPERATURE ("°C) 10 NAUTICAL MILES AT MONITORING STATIONS December 1"975

2.3 FRESHWATER DISCHARGE OF THE JAMES RIVER AT RICHMOND AND HOG ISLAND The daily freshwater discharge of the James River and the James River and Kanawha Canal gages at Richmond have been combined and tabulated in Table 2.3-1. The calculated freshwater flow at Hog Island is also tabu-lated in Table 2.3-1.

The freshwater flow of the James River at Hog Island has been calcu-lated using the flow at Richmond and the relative drainage area of the James River above and below Richmond to Hog Island. The area above Richmond is 6757 square miles and the area from Richmond to Hog Island is 2760 square miles.

Therefore:

B =Ax (6757 + 2760) 6757 Where: B = Flow at Hog Island A= Flow at Richmond The time of flow from Richmond to Hog Island is variable, being dependent upon the flow at Richmond.

2.3-1

TABLE 2.3-1 FRESHWATER DISCHARGE OF THE JAMES RIVER AT RICHMOND AND HOG ISLAND JULY-DECEMBER, 1975 e

CALCULATED JAMES RIVER JAMES RIVER DATE DISCHARGE AT RICHMOND, C.F.S. DISCHARGE AT HOG POINT, C.F.S.

July 1, 1975 4,694 6,611 2 4,176 5,882 3 3,618 5,096 4 3,458 4,870 5 3,488 4,913 6 3,538 4,983 7 4,006 5,642 8 4,436 6,248 9 4,176 5,882 10 4,306 6,065 11 4,056 5,713 12 4,324 6,090 13 6,048 8,518 14 32,492 45,764 15 38,928 54,829 16 21,428 30,181 17 28,828 40,603 18 19,328 27,223 19 11,410 16,071 20 8,060 11,352 21 6,310 8,887 22 5,490 7,732 23 5,360 7,549 24 4,972 7,003 25 4,842 6,820 26 9,969 14,040 27 8,750 12,324 28 6,610 9,310 29 5,360 7,549 30 5,230 7,366 31 4,842 6,820 August 1, 1975 4,324 6,090 2 3,606 5,079 3 3,676 5,178 4 3,338 4,702 5 3,238 4,561 6 4,972 7,003 7 9,688 13,645 8 7,390 10,409 9 7,230 10,183 10 5,472 7,707 11 4,574 6,442 12 3,976 5,600 13 3,906 5,502 14 3,488 4,913 15 3,338 4,702 2.3-2

TABLE 2.3-1 (Cont'd)

- DATE August 16, 1975 17 JAMES RIVER DISCHARGE AT RICHMOND, C.F.S.

3,318 6,030 CALCULATED JAMES RIVER DISCHARGE AT HOG POINT, C.F.S.

4,673 8,493 18 5,212 7,341 19 3,688 5,194 20 3,268 4,603 21 3,458 4,070 22 2,740 3,859 23 2,980 4,197 24 2,632 3,707 25 2,840 4,000 26 3,338 4,702 27 3,250 4,578 28 2,454 3,456 29 2,204 3,104 30 2,314 3,259 31 2,184 3,076 September 1, 1975 8,396 11,826 2 12, 711 17,903 3 7,551 10,635 4 6,218 8,758 5 4,635 6,528 6 3,985 5,613 7 3,238 4,561 8 3,288 4,631 9 3,318 4,673 10 3,488 4,913 11 3,506 4,938 12 3,338 4,702 13 3,148 4,434 14 3,168 4,462 15 2,980 4,197 16 2,492 3,510 17 2,540 3,578 18 2,610 3,676 19 2,808 3,955 20 3,874 5,456 21 4,472 6,299 22 4,454 6,273

• 23 5,622 7,918 24 26,428 37,223 25 45,410 63,959

26 74,874 105,458 27 65,910 92,832 28 27,410 38,606 29 16,810 23,676 30 12,210 17,197 2.3-3

TABLE 2.3-1 (Cont'd)

CALCULATED JAMES RIVER JAMES RIVER DATE DISCHARGE AT RICHMOND, C.F.S. DISCHARGE AT HOG POINT, C.F.S.

October 1, 1975 9,670 13,620 2 8,230 11,592 3 6,910 9,732 4 6,302 8,876 5 6,012 8,468 6 5,342 7,524 7 4,972 7,003 8 4,972 7,003 9 4,842 6,820 10 4,972 7,003 11 4,972 7,003 12 4,712 6,637 13 4,574 6,442 14 4,454 6,273 15 4,574 6,442 16 4,574 6,442 17 4,324 6,090 18 5,472 7,707 19 17,846 25,136 20 30,346 42,741 21 21,328 30,040 22 13,128 18,490 23 10,230 14,409 24 8,418 11,856 25 7,248 10,209 26 6,610 9,310 27 6,170 8,690 28 5,750 8,099 29 5,620 7,916 30 5,230 7,366 31 4,972 7,003 November. 1, 1975 4,972 7,003 2 4,712 6,637 .

3 4,454 6,273 4 4,454 6,273 5 4,324 6,090 6 4,194 5,907 7 4,194 5,907 8 4,472 6,299 9 4,006 5,642 10 4,194 5,907 11 4,194 5,907 12 4,592 6,468 13 7,110 10,014 14 15,928 22,434 15 10,248 14,434 16 9,688 13,645 17 9,128 12,856 2.3-4

TABLE 2.3-1 (Cont'd)

CALCULATED JAMES RIVER JAMES RIVER e DATE November 18, 197'5 DISCHARGE AT RICHMOND, C.F.S.

7,738 DISCHARGE AT HOG POINT, C.F.S.

10,899 19 6,610 9,310 20 6,310 8,887 21 5,872 8,270 22 5,212 7,341 23 5,472 7,707 24 5,092 7,172 25 4,824 6,794 26 4,824 6,794 27 4,824 6,794 28 4,694 6,611 29 4,436 6,248 30 4,306 6,065 December 1, 1975 4,306 6,065 2 4,176 5,882 3 4,056 5,713 4 4,176 5,882 5 3,918 5,518 6 3,918 5,518 7 3,938 5,547 8 4,556 6,417 9 5,194 7,316 10 5,872 8,270 11 5,854 8,245 12 5,566 7,840 13 5,176 7,290 14 4,658 6,561 15 4,676 6,586 16 4,936 6,952 17 4,288 6,040 18 4,158 5,856 19 4,038 5,687 20 3,888 5,476 21 3,958 5,575 22 3,670 5,169 23 3,520 4,958 24 3,638 5,124 25 3,638 5,124 26 4,306 6,065 27 9,970 14,042 28 11,410 16,071 29 9,868 13,899 30 10,058 14,166 31 10,610 14,944 2.3-5

2.5 CHEMICAL RELEASES TO THE COOLING WATER SYSTEM Table 2.5-1 through 2.5-6 identify and sunnnarize the chemicals which were released to the cooling water system for the period July 1, 1975 through December 31, 1975.

2.5-1

SURRY POWER STATION CHEMISTRY REPORT

- I

~-J_U_LY__~,19~

T.S. 6.6.A.11 TABLE 2.5-1 PRIMARY COOLANT UNIT NO. 1 UNIT NO. 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 3.45E-1 9.65E-2 1. 90E-l 3.SSE-l 1. 33E-2 2.43E-l Suspended Solids, ppm 0.1 o.o 0.1 0.2 o.o 0.1 Gross Tritium, µCi/ml 5.88E-2 . 3.31E-2 4.27E-2 6.SOE-2 4.09E-2 5.67E-2 Iodine-131, µCi/ml l. llE-1 7.SlE-3 7 .42E-,,2 8.49E-3 1. 78E-3' S.OBE-3 I-131/I-133 1.19

• 77 1.00 .92 .15 .44 Hydrogen, cc/kg 30.0 18.2 22.7 26. 2

• 15.0 20.6 Lithium, ppm .90 .30 .46

• 72 .34 .so

• Bo;on-10, ppm+ 240.2 52.9 116.4 290.9 174.6 208.5 Oxygen--16, ppm *O 0 0 0 0 0 "chloride; ppm .12 .OS .06 .12 .OS .06 pH@ 25°C 6.75 6.02 6.52 6.50 5.92 6.25

+ Boron-10 = Total Boron x 0.196 NON-RADIOACTIVE CHEMICAL

• I RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 0 Boron 612 Sulfate 1390 Chromate 0.35

---

"C...:..~------

Remarks: __________________________________________,...__

2.5-2

SURRY POWER STATION CHEMISTRY REPORT AUGUST , 19_fl e T.S. 6.6.A.11 TABLE 2.5-2 PRIMARY COOLANT UNIT NO. 1 UNIT NO. 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 2.61E 1

• 2.70E-2 1. 96E-1 4.80E-l l.54E-l 2.75E-l Suspended Solids, ppm 0.1 o.o 0.1 0.1 o.o 0.1 Gross Tritium, µCi/ml 8.98E-2 1. 81E-2 3.96E-2 6.40E-2 4. 29E-2 5.69E-2 Iodine-131, µCi/ml 5.17E-2 4.40E-2 4.93E-2 6.19E-1 6.45E-3 9.14E-2.

I-131/I-133 0.84 0.62 o. 72 1.00 0.54 0.76 Hydrogen, cc/kg 18. 2 10.3 15.0 28.3 16.2 21.6 Lithium, ppm 0.48 0.20 0.34 0.68 0.46 0.55 Boron-10, ppm+ -1,131. s 40.2 66.4 186.4 160.7 169.7 Oxygen-16, ppm 0 0 0 0 0 0 Chloride, ppm .09

• 05 .06 .09 .OS .06 pH@ 25°C 6.88 6.13 6.60 6.50 6.22 6.34

+ Boron-10 = Total Boron x 0.196 NON-RADIOACTIVE CHEMICAL RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 0 Boron 930 Sulfate 834 Chromate 0.54 Remarks:, _ _ _ _ ____:7.:_'~U~n~i-=-t~Sh~u=..!t::.!::d~o~wn~---------------------------

e 2.5-3

SURRY POWER STATION CHEMISTRY REPORT SEPTEMBER , 19_li T.S. 6.6.A.11 TABLE 2.5-3 PRIMARY COOLANT UNIT NO. 1 UNIT NO. 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 3. 21E-l 3.95E-2 2.lOE-1 3.00E-1 1. 44E-l 2.33E-1 Suspended Solids, ppm 0.01 o.oo 0.01 0.01 o.oo 0.01 Gross Tritium, µCi/ml 6.JOE-2 3.74E-2 5.13E-2 1. 30E-l 6.79E-2 1. 04E-1 Iodine-131, µCi/ml 3.38E-2 3.04E-2 3.17E-2 2.25E-l 9.29E-3 3.SOE-2 I-131/I-133 0.99 0.51 o. 72 1.23 0.43 0.73 Hydrogen, cc/kg ,-,o. 0 28.8 1 "i l, 11 _r, H,_ Li_  ?? Li_

Lithium, ppm 0.26 i,Q.03 icQ.18 0.60 0.26 0.46 Boron-10, ppm+

• 290.0 23.9 117 .o 203.2 110.1 161.9 Oxygen-16, ppm o.oo *8.80 *0.93 0.000 0.000 0.000 Chloride, ppm 0.05 0.06 0-07 0-05 0.06 0.07 pH@ 25°C 6.85 5.40 6.56 6.52 6.11 6.36

+ Boron-10 = Total Boron x 0.196 NON-RADIOACTIVE CHEMICAL RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 4 Boron __3_8_6_ _ _ _ _ __

Sulfate 838 Chromate 0.18 - - - - -

Remarks :. ____*.. :::U:.:.!n:::i.:::.t. . :s:::.;h::;u::..::t:;:d:.;::o..::.w~n-.:f::..:o:..:r:_::r.=e.::.fu.::.e::.:1::;:i::.n:s;g!.. :. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __

e 2.5-4

SURRY POWER STATION CHEMISTRY REPORT OCTOBER , 19..l.2._

T.S. 6.6.A.ll Table 2.5-4 I

PRIMARY COOLANT UNIT NO. 1 UNIT NO .* 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 4c46E-2 l.16E-3 1. 64E~2 2.88E-l l.21E-2 1.53E-l Suspended Solids, ppm 0.6 0.1 0.3 0.2 o.o -0.1 Gross Tritium, µCi/ml 9.67E-2 9.94E-3 3.3GE-2 7.49E-2 3.04E-2 4.79E-2 Iodine-131, µCi/ml 4.30E 2 2.19E 5 6.07E- 3 L64F.-2 1 48F.-':\ 7. ?hF-J I-131/I-133 -/; -1: 0.53 0.06

• 0.30 Hydrogen, cc/kg o.oo o.oo 0.00 28.3 13.4 19.0 Lithium, ppm 0.03 o.oo <0.01 o. 71 0.31 0.47 Boi:-on-10, ppm+ 514.9 286.9 453.1 356.1 '~* 136.8 184.2 Oxygen-16, ppm 5.80 *o.4o 2.16 0.000 0.000 0.000 "chloride; ppm 0.14 0.05 0.07 0.09 0.05 0.06 pH@ 25°C 5.55 4.50 5.09 6.62 5.91 6.37

+ Boron-10 = Total Boron x 0.196 NON-RADIOACTIVE CHEMICAL RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 0 Boron 926.8 Sulfate 560 Chromate _____o_._2_4_ _ __

Remark~ : _ _ _:.:..*....-:U~nJ:.:i:.!:t~l~sh~u~t~d~o~wn~=-fo~r~r~e'-=f~u~e=-11:..!.n~g.__..,d~u""-r='in,.._,ga,.......:,t.....h=e'--=en=t=1.=*r,. , e: . . .*..,,,m=o=nt=h=1. . __ _ _ _ _ _ _ _ _ __

e 2.5-5

SURRY POWER STATION CHEMISTRY REPORT NOVEMBER , 19~

T.S. 6.6.A.ll Table 2.5-5 PRIMARY COOLANT UNIT NO. 1 UNIT NO. 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 3.94E-2 1.lOE-3 6.07E-3 3.00E-1 1. 78E-1 2.35E-1 Suspended Solids, ppm 0.4 o.o 0.1 0.2 o.o 0.1 Gross Tritium, µCi/ml 2.03E-2 8.85E-3 1.35E-2 1. 74E-1 6.52E-2 1.17E-1 Iodine-131, µCi/ml 1.03E-3 1.llE-4 .5.63E-4 3.39E-2 7.82E-3 1.52E-2 I-131/I-133 )(  ;, 1< 0.7440 0.3463 0.5240 Hydrogen, cc/kg o. Qi< 0.01: 0 ,01< 24.6 19.4 21.0 Lithium, ppm 0.37 0. O>'< 0.14~'< 1.00 0.60 0.84 Boron,10, ppm+ 500.6 432.8 480.8 139.6 116.4 o._2s.o Oxygen-16, ppm 2.00* 0-00 O_ Rli. o.nn 0.00 n_nn Chloride, ppm 0.12 0.05 0,06 0.07 0.05 0.05 pH@ 25°C 6.20 4.85 5.42 6.90 6.50 6.70

+ Boron-10 = Total Boron x 0.196 NON-RADiOACTIVE CHEMICAL RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 0 Boron 969.4 Sulfate 1112 Chromate ~~-0~.0-~6~~~~~

Remarks: i< Unit sh11tdown for refueling.

2.5-6

SURRY POWER STATION CHEMISTRY REPORT DECEHBER , 19_n_

T.S. 6.6.A.ll Table 2.5-6 PRIMARY COOLANT UNIT NO. 1 UNIT NO. 2 ANALYSIS MAXIMUM MINIMUM AVERAGE MAXIMUM MINIMUM AVERAGE Gross Radioact., µCi/ml 3.47E-l 8.79E-4 1. 47E-l 3.07E-l 1. 71E-1 2.46E-1 Suspended Solids, ppm 0.1 a.a 0.1 0.2 a.a 0.1 Gross Tritium, µCi/ml 6.40E-2 5.55:E-3 2.55E-2 1. 27E-l 5.04E-2 9.42E-2 Iodine-131, µCi/ml 5.93E-2 3.47E-3 1. 63E-2 5.03E-2 1. 53E-2 2.36E-2

• I-131/1-133 *0.53 0.11 0.33 0.76 0.40 0.53 Hydrogen, cc/kg 19.5 1. 4~t 11.1 25.6 12.5 18.7 Lithium, ppm

• 0.65 0.10* 0.34 0.87 0.58 0.75 Boron-10,.ppm + 507.1* 134.3 241.5 I 119.9 94.3 109.4 Oxygen-16, ppm o. 0 0 0 0 0 Chloride, ppm 0.11 0.05 0.06 0.05 0.05 0.05 pH@ 25°C 6.75 5.10 6.00 6.91 6.62 6. 77

+ Boron-10 = Total Boron x 0.196 NON-RADIOACTIVE CHEMICAL RELEASES, POUNDS T.S. 4.13.A.8 Phosphate 0 Boron 1789 Sulfate 834 Chromate 0.56

---

~-

Remarks: _ _....:.*~U~n~i..:.t_s2.!l~m:!..!t::.::::d~o:.!!.w~n_f:,,:o~r::....*....::r:.!:e=-=-f~u=el::;.:i::::.:'nc:..tg~.---------------:-----------,-- ----------------------

3.0 NON-RADIOLOGICAL MONITORING PROGRAM - BIOLOGICAL The Non-radiological Monitoring Program - Biological applies to the monitoring of the biological variables in the ten (10) mile segment of the James River Estuary centered at Hog Island. The bio-logical monitoring program which is closely related to the physical and chemical programs is conducted to determine the planktonic, nektonic, and benthic characteristics of the tidal segment centered at Hog Island and to determine biological changes that occur as a result of the operation of the Surry Power Station.

3.0-1

- 3.1 PLANKTON Summary Water samples for plankton analyses are collected at each of six (6) stations as indicated in Figure 3.1-1. Samples are also collected in the intake and discharge canals. During the month of August, sampling was augmented with six (6) additional stations to provide more comparisons among stations within and outside the plume.

Phytoplankton samples are taken monthly and are analyzed quantitatively in terms of sample yolume to determine both the dominant genera of the community and the chlorophyll "a" content. Zooplankton samples are analyzed quantitatively in terms of sample volume to determine generic composition, life history stage and, where possible, species. The sampling interval is approximately monthly, taking into consideration life-history information about important species in the area which have planktonic stages in their life histories.

Results The results of this survey are contained in the report prepared by the Virginia Institute of Marine Science entitled "Vepco Surry Power Plant Study, Progress Report" dated January, 1976 which is appended to this section. as Appendix 3.0.

Conclusions Refer to the referenced report.

e 3.1-1

Figure 3.1-1 BIOLOGICAL SAMPLE STATIONS

-N-

~

I 0 D.

D DO D.

• HOG ~

I SLAtlD ~

(,.j D.

<t' D. ~

c.,~

0 D

D.

SURRY POWER STATION 0 2 Nautical Miles JAMES RI VER 1000 0 1000 2000 3000 Yards

/

0 Trawl (Nekton)

• Seine (Nekton)

D Plankton

• Fouling Plates D. Benthos 3.1-2

3.2 ATTACHED BENTHIC COMMUNITY e Sunnnary Fouling plates that are 125- by 75-mm asbestos boards are suspended 1 meter above the bottom at the instrument tower locations shown in Figure 3.1-1 are used to obtain samples. Two vertical and two horizontal plates are suspended at each indicated location.

One of each pair is removed and replaced at quarterly intervals; the other pair is left in place for one year before being removed and replaced. The benthic communities attached to the plates are analyzed for species composition and diversity.

Results The results of this survey are contained in the report pre-pared by the Virginia Institute of Marine Science entitled "Vepco Surry Power Plant Study, Progress Report" dated January, 1976 which is appended to this section as Appendix 3.0.

Conclusions Refer to the referenced report.

3.2-1

3.3 EPIBENTHOS Summary Replicate benthic grab samples are collected at the stations shown in Figure 3.1-1. Collection is made on a quarterly basis, except during June, July, and August when they are made monthly. Population characteristics such as species composition, diversity, evenness, redundancy, and richness are determined. The data are analyzed to.

detect changes in specific components of the epibenthic community including the brackish water clam Rangia cuneata and blue crab Callinectes sapidus.

Results The results of this survey are contained in the report prepared by the Virginia Institute of Marine Science entitled, "Vepco Surry Power Plant Study, Progress Report" dated January, 1976 which is appended .to this report as Appendix 3.0.

Conclusions Refer to referenced report.

3.3-1

3.4 NEKTON Fisheries investigations will be reported separately as results from monthly surveys, results from special seine surveys, ichthyoplankton entrainment study, and thermal plume entrainment study.

3.4.1 MONTHLY SURVEYS Monthly surveys employing beach seines and otter trawls have been conducted since May, 1970. Four years of data were analyzed and reported in the Semiannual Operating Report, January 1, 1974 through June 30, 1974 as a comparison of pre- and postoperative conditions.

Data for July - December 1975 are presented as Tables 3.4.1-1 through 3.4.1-7. The cumulative account of the number of species, diversity, evenness, and richness by gear by season is presented as Figure 3.4.1-1. For purposes of this semiannual report, summer and fall.(1975) points have been added to the figure. Winter (1975) data points on Figure 3.4.1-1 are based on one month (December) and are included for informational purposes only.

3.4.1-1

§ 3.0 u, 2.5 i2.0 0

~ 1.5

~ 1.0

..."'~0.5

...> 0 3.0

- 2.5

r -*---._

>- 2.0 I-i:11.5

(;..)

~

0 1.0

..... 0.5 *----TRAWL .....

N I

0

• --SEINE .....I 30 25 u20 0..

~

15 10

" 5 0

s s F w S S F W S S F W S S F W S W S -s F w s s F 1970 197 I 1972 1973 1974 19 5 1976 FIGURE I : COMPOSITE OF NUMBERS OF SPECIES, DIVERSITY (H'), EVENNESS (J), ANO RICHPESS (DI BY SEASON FOR SEINE ANO TRAWL SAMPLES - SURRY POWER STATION

- TABLE 3.4.1-1 -- DIVERSITY (H'), EVENNESS (J), RICHNESS (D):

SEINE COMPOSITES BY SEASON TRAWL H' J D H' J D Summer 1975 2.9704 0.5839 2.4595 2.3219 0.5943 1.3535 Fall 1975 2.1498 0.4574 2.0908 2.9084 0.6847 .1.8757 Winter* 1975 1.4555 0.4592 0.8640 2.6873 0.6878 1.5218

• Represents only one month's (December) data 3.4.1-3

TABLE 3.4.1-2 -- H' FOR SEINE DATA - SURRY STATION INTAKE INTAKE HOG POINT JAMESTOWN DATE SOUTH NORTH WEST CHIPPOKES CREEK *GOOSE HILL ISLAND COLLEGE CREEK COMPOSITE 7-75 2.7004 1.4456 2.0826 2.4075 1. 7113 1.4788 2. 7204 2.3846 8-75 1.2980 2.4628 1.4282 1.3934 1.8058 2.7529 0.5769 1. 7726 9-75 0.9015 1. 3720 1.0855 1.6106 1. 0865 1.4941 2.2140 2.0242 10-75 2.0130 2.2155 0.4436 1.5259 1. 4513 2.1458 2 .1031 2.1266

1. 4066 l,.) 11-75 2.3936 0.5033 0.5682 1.1914 0.9310 1.8804 1. 0121

.i::-

f--' 12-75 1. 8675 1.4591 0.9995 0.9183 0.4206 1.1399 0.0905 1.4555 I

.i::-

e TABLE 3.4.1-3 -- H' FOR TRAWL DATA - SURRY STATION DATE HOG POINT INTAKE

• DISCHARGE NORTH DISCHARGE MIDDLE DISCHARGE SOUTH GOOSE HILL COMPOSITE 7-75 0.5033 1. 3710 2.1457 1.6446 1.8690 0.9183 2.0066 8-75 0.8454 1.3868 1.5219 1. 7114 1. 9778 0.0000 2.1248 9-75 2.0169 2.4309 1.6573 2.2152 1.3483 1.5850 2.0791 10-75 1.3753 1.5305 2.2040 1.5305 0.0000 0.0000 2.5258" 11-75 2.9001 2.1665 2.9306 3.0521 2.3200 1. 9577 3. 3577

.w

.+"

f--'

12-75 1. 9155 2.5766 2.8936 1.4238 1.8068 1.5343 2.6873 I

Vt

i TABLE 3.4.1-4 -- EVENNESS FOR SEINE DATA - SURRY STATION INTAKE INTAKE HOG POINT JAMESTOWN DATE SOUTH NORTH WEST CHIPPOKES CREEK GOOSE HILL ISLAND COLLEGE CREEK COMPOSITE 7-75 0.6912 0.4032 0.5095 0.6959 0.5151 0.4125 0.7352 0.4960 8-75 0.8190 0.8209 0.4505 0.4645 0.5037 0.7679 0.1820 0.3817 9-75 0.3882 0.4573 0.4675 0.6231 0.4203 0.5322 0.8565 0.4765 10-75 o. 7170 '0.7385 0.2218 0.4814 0.4838 0.7153 0.6331 0.5100 11-75 0.9260 0.5033 0.2841 0.5957 0.4009 0.6268 0.3915 0.3801

.w

..i:,-

I-"

12-75 0.8043 o. 9206 0.9995 0.9183 0.2103 0.4410 0.0905 0.4592 I

CJ'\

TABLE 3.4.1-5 -- EVENNESS FOR TRAWL DATA - SURRY STATION DATE HOG POINT INTAKE DISCHARGE NORTH DISCHARGE MIDDLE DISCHARGE SOUTH GOOSE HILL COMPOSITE 7-75 0.5033 0.8650 0~7643 0.5188 0.6230 0.9183* 0.5597 8-75 0.8454 0.6934 0.9602 0.7371 0.6593 0.0000 0.7083 9-75 0.8686 0.8103 0.7138 o. 7384 0.4494 1.0000 0.6010 10-75 0.6876 0.9656 0.7851 0.9656 0.0000 0.0000 o. 7968 11-75 0.8090 0.6835 0.7919 0.9188 0.8264 0.7573 0.8215 Lu

-1:'-

f-'

12-75 0.7410 0.8128 0.8072 0.4116 0.5040 0.5935 0.6878 I

-..J

TABLE 3.4.1-6 -- RICHNESS FOR SEINE DATA - SURRY STATION INTAKE INTAKE HOG POINT JAMESTOWN DATE SOUTH .* NORTH WEST CHIPPOKES CREEK GOOSE HILL ISLAND COLLEGE CREEK COMPOSITE 7-75 2.0132 1.3094 1.8597 1.2333 0.9742 1. 2574 1. 7227 2.4197 8-75 0.3201 1.3066 1. 2293 0.8573 1. 4272 1. 6190 0.7876 2.1949 9-75 0.8412 0.9003 0.5541 o. 7542 0.5931 0.5830 1.0092 1.6286 10-75 0.9856 1.2340 0.5401 0.9952 0.8492 1.0264 1.2338 1.7053 I.,.) 11-75 1.1991 0.3155 0.4128 0.4351 0.5063 1.0426 0.6505 1.2331

.i,-.

I--' 12-75 0. 8724 o. 7737 0.1892 0.3869 0.4202 0.6041 0.1552 0.8640 I

CXl

TABLE 3.4.1-7 -- RICHNESS FOR TRAWL DATA - SURRY STATION DATE HOG POINT INTAKE DISCHARGE NORTH DISCHARGE MIDDLE DISCHARGE SOUTH GOOSE HILL COMPOSITE 7-75 0.3155 0.8614 1. 0475 1. 0913 1.0383 0.6309 1.3094 8-75 0.2891 0.6543 0.8614 0.6745 0.9922 0.0000 0.8860 9-75 0.9592 1.3153 0.7930 1.0447 0.9374 1.2619 1.1695 10-75 0.7679 0.6309 1. 1794 0.6309 0.0000 0.0000 1.3096

.w 11-75 1. 8474 1.3838 1.8439 1.8928 1.1352 0.8610 1. 9124

~

I-' 12-75 0. 8729 1.4248 1.5982 1.3120 1. 6705 0.8027 1. 5218 I

\C

3.4.2 POPULATION ESTIMATES Several fish species inhabit the waters of the James River around Hog Island at certain stages in their life cycle during certain times of the year. In an effort to estimate numbers of fish inhabiting the shore zone waters during times of expected high population density in an area from the intake structure to the discharge groin, three sample stations (Hog Point-West, Hog Point-North, Hog Point-East) were sampled (Figure 3.4.2-1). Data are reported as Table 3.4.2-1.

In order for population estimates to approach total populations of a species within a given area in any reliable manner, certain.assumptions have to be made: (1) Fish are uniformly distributed throughout the area from the shore-line to 40 feet out from the shoreline; (2) Catch efficiency of a haul seine is about fifty percent; and (3) Sample station habitats, and therefore the entire multiplicity of shoreline habitats, are similar and equal in their ability to attract and support young fish.

That these assumptions do not hold true, especially in the oligohaline reaches of tidal estuaries, is shown by the high degree of variability between and within species, between and within stations, and between replicates of a station. However, to fulfill the requirements of thip section of the Surry Technical Specifications, the following methodology was used in an attempt to estimate populations.

The shoreline between the discharge and intake, is about 30,000 feet long and provides 400 possible 75-foot sampling stations. Sample values for all species have been projected to reflect the numbers of fish occupying a 40-foot wide strip along this shore on the given sample days.

3.4.2-1

A fifty-foot haul seine having 1/4 inch bar mesh netting was used to sample a premeasured 75-foot stretch of beach. A replicate sample was taken within minutes of the first sample.

A sample consisted of stretching the seine perpendicular to the shore, hauling it 50 feet*and then having the offshore man bring his end ashore in an arc about 25 feet further along the beach as shown below.

DIRECTION OF TOW

\ SEINE BROUGHT ASHORE 0 \

ALONG THIS PATH

"'" 'I I

50ft.

25 ft.

Hence, a small portion of the sample unit (about 8-10%) is not covered. The population estimates do not include an expansion for this unsampled area and thus should consistently underestimate the population values by a small amount.

It should be pointed out that all of the species sampled, within the size ranges taken, are schooling species except for possibly spottail shiner, golden shiner, channel catfish, and white perch. Schooling will also cause large variances to be associated with population estimates.

3.4.2-2

Figure 3.4.2-1 SURRY POWER STATION

-N-t I

HOG I SLAtJD SURRY POWER STATION Intakes 0 2 Nautical Miles J..l.../,..L..;L-L-'-1,.1..L-1'-------1--------' JAMES RIVER 1000 O 1000 2000 3000 Yards A--Hog Point-West B--Hog Point-North c--Hog Point-East 3.4.2-3

TABLE 3.4.2-1 Standard Deviation Date II Fish II SamEles PoEulation Est. of Estimate Life Stage

- Alosa aestivalis 7/22/75 7/29/75 8/08/75 11 8

21 6

6 6

733 533 1,400 67 353 1,176 Juvenile Juvenile Juvenile 8/11/75 14 6 933 625 Juvenile 8/18/75 1 6 67 67 Juvenile 8/27/75 16 6 1,067 989 Juvenile 10/03/75 330 6 22,001 19,034 Juvenile 10/08/75 29 6 1,933 993 Juvenile 10/10/75 8 6 533 304 Juvenile 10i31/75 59 6 3,934 3,462 Juvenile 11/20/75 10 6 667 446 Juvenile 12/05/75 61 6 4,067 2,554 Juvenile 12/12/75 1 6 67 67 Juvenile 12/29/75

• 5 6 333 67 Juvenile Alosa pseudoharengus 10/ 10/7 5 1 6 67 67 Juvenile Alosa sapidissima 10/03/75 10 6 667 267 Juvenile 10/07 /75 1 6 67 67 Juvenile 10/31/75 1 6 67 67 Juvenile 11/20/75 2 6 133 67 Juvenile Anchoa mitchilli 8/08/75 21 6 1,400 1,322 Juvenile/Adult 8111/75 17 6 1,133 489 Juvenile/Adult 8/18/75 2 6 133 67 Juvenil*e/Adult 8/27/75 6 6 400 253 Adult 9/12/75 6 6 400 67 Adult.

10/08/75 1 6 67 67 Adult 11/20/75

• 1 6. 67 67 Adult Anguilla rostrata 8/27/75 1 6 67 67 Juvenile 10/08/75 1 6 67 67 Juvenile Bre'voortia tyrannus 7/22/75 22 6 1,467 1,388 Juvenile 8/ 11/75 75 6 5,000 67 Juvenile 8,/ 18/7 5 9 6 600 67 Juvenile 8/27/75 65 6 4,334 2,165 Juvenile

- 9/19/75 10/10/75 9

12 6

6 600 800 3.4.2-4 67 547 Juvenile Juvenile

TABLE 3.4.2-1 (Cont'd)

Standard Deviation

- Date II Fish Caranx hippos 8/27/75 1 II Samples 6

Population Est.

67 of Estimate 67 Life Stage Juvenile c:nrinus carpio 7/22/75 1 6 67 67 Juvenile Dorosoma cepedianum 7 /22/75 80 6 5,334 3,433 Juvenile 7 /23/75 1 6 67 67 Juvenile 7/29/75 14 6 933 856 Juvenile 8/08/75 15 6 1,000 573 Juvenile 8/11/75 7 6 467 67 Juvenile 8/18/75 2 6 133 67 Juvenile/Adult 8/27/75 6 6 400 67 Juvenile 9/19/75 1 6 67 67 Juvenile 10/08/75 1 6 67 67 Juvenile 10/10/75 4 6 267 67 Juvenile 10/31/75 5 6 333 262 Juvenile/Adult Dorosoma petenense 7/22/75 8 6 533 396 Juvenile 7/23/75 1 6 67 67 Juvenile 8/11/75 1 6 67 67 Juvenile 8/27 /75 1 6 67 67 Juvenile 10/03/75 1 6 67 67 Juvenile 10/10/75 1 6 67 67 Juvenile 12/26/75 1 6 67 67 Juvenile Esox americanus 7 /22/75 7 6 467 67 Juvenile Fundulus diaphanus 7/22/75 2 6 133 67 Adult 8/11/75 1 6 67 67 Adult 8/'18/75 1 6 67 67 Adult 8/27 /75 2 6 133 67 Adult 9/'19/75 2 6 133 67 Adult 10/08/75 1 6 67 67 Adult 11/20/75 2 6 133 67 Adult Fundulus heteroclitus 11/20/75 43 6 2,867 67 Adult e 12/05/75 3 6 200 67 Adult 3.4.2-5

TABLE 3.4.2-1 (Cont'd)

Standard Deviation Date # Fish # Samples Population Est. of Estimate Life Stage Hybognathus nuchalis 7 /22/75 12 6 800 516 Adult 7 /129/7 5. 3 6 200 67 Adult 8/108/75 2 6 133 67 Adult 8/11/75 3 6 200 67 Adult 8/27 /75 11 6 733 67 Adult 9/12/75 2 6 133 67 Adult 10/103/75 4 6 267 67 Adult 10/,07 /75 9 6 600 67 Adult 10/,08/75 28 6 1,867 422 Adult 10/10/75 43 6 2,867 431 Adult 10/31/75 14 6 933 422 Adult 11/20/75 1 6 67 67 Adult Ictalurus catus 8/08/75 1 6 67 67 Adult 9/12/75 2 6 133 67 Juvenile Ictalurus nebulosus 7 /22/75 19 6 1,267 579 Juvenile 7 /23/75 1 6 67 67 Juvenile 7 /29/75 2 6 133 67 Juvenile 8/18/75 1 6 67 67 Juvenile 8/27 /75 1 6 67 67 Juvenile 9/12/75 6 6 400 179 Juvenile Ictalurus punctatus 7/22/75 2 6 133 67 Juvenile 7/23/75 2 6 133 67 Juvenile 7/29/75 6 6 400 327 Juvenile 8/ 11/75 1 6 67 67 Juvenile 8/27 /75 5 6 333 67 Juvenile/ Adult 9/12/75 35 6 2,333 1,473 Juvenile/Adult 10/08/75 4 6 267 67 Juvenile 10/10/75 2 6 133 67 Juvenile/Adult 10/31/75 1 6 67 67 Juvenile 3.4.2-6

TABLE 3.4.2-1 (Cont'd)

,, Standard Deviation Date

- -. II Fish II Samples Population Est. of Estimate Life Stage Leiostomus xanthurus 7/22/75 54 6 3,600 1,200 Juvenile 7 /29/75 59 6 3,934 1,695 Juvenile/Adult 8/08/75 2 6 133 67 Juvenile 8/ 11/75 3 6* 200 67 Juvenile 8/18/75 6 6 400 67 Juvenile

• 8f27 /75 5 6 333 191 Juvenile 9/12/75 69 6 4,600 675 Juvenile

. 9/19/75 1 6 67 67 Juvenile 10/07/75 3 6 200 67 Juvenile/Adult 10/08/75 13 6 867 431 Juvenile 10/10/75 4 6 267 67 Juvenile 10/31/75 5 6 333 67 Juvenile 11/20/75 1 6 67 67 Juvenile 12/05/75 1 6 67 67 Juvenile Lepomis gibbosus 7/22/75 3 6 200 67 Juvenile 7/29/75 5 6 333 67 Juvenile/Adult 8/08/75 1 6 67 67 Juvenile 8/18/75 1 6 67 67 Juvenile 8/27 /75 4' 6 267 67 Juvenile/Adult 9/12/75 1 6 67 67 Adult 10/08/75 7 6 467 67 Juvenile 10/10/75 1 6 67 67 Juvenile 10/31/75 4 6 267 198 Juvenile 12/26/75 1 6 67 67 Juvenile Lutjanus griseus*

.10/07 /75 1 6 67 67 Juvenile Membras martinica 9/19/75 2 6 133 67 Juvenile 10/10/75 1 6 67 67 Juvenile Meriidia beryllina I

7 /22/75 16 6 1,067 523 Juvenile/Adult 7/23/75 4 6 267 67 Juvenile/Adult 7/29/75 10 6 667 304 Juvenile/Adult 8/08/75 2 6 133 67 Juvenile/Adult 8/11/75 5 6 333 191 Juvenile/Adult 8/18/75 1 6 67 67 Juvenile/Adult 8/27/75 4 6 267 198 Juvenile/Adult 9/12/75 2 6 133 67 Juvenile/Adult e 9/19/75 10/03/75 5

4 6

6 333 267 67 198 Juvenile/Adult Juvenile/Adult

3. 4,. 2-7

TABLE 3.4.2-1 (Cont'd)

Standard Deviation Date It Fish It Samples Population Est. of Estimate Life Stage

- Menidia beryllina 10/07/75 10/08/75 10/10/75 1

16 14 6

6 6

67 1,067 933 67 198 368 Juvenile Juvenile/Adult Juvenile 10/31/75 47 6 3,133 932 Juvenile/Adult 11/20/75 123 6 8,200 5,566 Juvenile/Adult 12/05/75 101 6 6,734 3,245 Juvenile/Adult 12/ 12/75 63 6 4,200 1,496 Juvenile/ Adult 12/26/75 24 6 1,600 575 Juvenile/ Adult 12/29/75 39 6 2,600 1,293 Juvenile/Adult Menidia menidia 7 /22/75 60 6 4,000 2,201 Juvenile/ Adult 7/29/75 8 6 533 286 Juvenile/Adult 8/08/75 48 6 3,200 2,811 Juvenile/Adult 8/11/75 41 6 2,733 2,030 Juvenile/Adult 8/27 /75 24 6 1,600 677 Juvenile/Adult 9/12/75 33 6 2,200 1,272 Juvenile/Adult 9/19/75 27 6 1,800 812 Juvenile/Adult 10/03/75 7 6 467 333 Juvenile/ Adult 10/07/75 1 6 67 67 Juvenile/Adult 10/08/75 3 6 200 67 Juvenile/Adult 10/ 10/75 8 6 533 198 Juvenile/Adult 10/31/75 30 6 2,000 820 Juvenile/Adult 11/20/75 7 6 467 317 Juvenile/Adult 12/05/75 2 6 133 67 Juvenile/Adult 12/12/75 24 6 1,600 700 Juvenile/Adult 12/26/75 2 6 133 67 Juvenile/Adult Micropogon undulatus 9/12/75 1 6 67 67 Juvenile Marone americana 7/22/75 1 6 67 67 Adult 7/29/75 1 6 67 67 Adult 8/08/75 3 6 200 67 Juvenile/Adult 8/ 11/75 1 6 67 67 Adult 8/18/75 2 6 133 67 Adult 8/27/75 4 6 267 67 Juvenile/Adult 9/12/75 5 6 333 191 Juvenile/Adult 9/19/75 1 6 67 67 Adult 10/03/75 1 6 67 67 Adult 10/07/75 1 6 67 67 Juvenile 10/08/75 5 6 333 67 Juvenile/Adult 10/10/75 2 6 133 67 Juvenile/Adult 10/31/75 3 6 200 67 Juvenile e

3.4.2-8

TABLE 3.4.2-1 (Cont'd)

Standard Deviation Date fl Fish II Samples Population Est. of Estimate Life Stage e Mugil cephalus 7/22/75 4 6 267 67 Juvenile 7/27/75 3 6 200 67 Juvenile 8/11/75 4 6 267 198 Juvenile/Adult 9/12/75 2 6 133 67 Adult 10/08/75 2 6 133 67 Juvenile/Adult Notomigonus crysoleucas 7 /22/7 5 41 6 2,733 2,275 Adult 7 /23/75 14 6 933 67 Adult 7/29/75 3 6 200 67 Adult 8/08/75 5 6 333 191 Adult 8/11/75 4 6 267 198 Adult 8/27/75 2 6 133 67 Adult 9/12/75 4 6 267 67 Adult 9/19/75 1 6 67 67 Adult 10/03/75 2 6 133 67 Adult 10/07/75 1 6 67 67 Adult 10/10/75 8 6 533 353 Adult 10/31/75 1 6 67 67 Adult Notropis analostanus 12/29/75 1 6 67 67 Juvenile Notropis hudsonius 7 /22/7 5 173 6 11,534 4,657 Juvenile/Adult 7/23/75 10 .6 667 67 Juvenile/Adult 7/29/75 53 6 3,534 1,509 Juvenile/Adult 8/08/75 38 6 2,533 886 Juvenile/Adult 8/11/75 63 6 4,200 1,934 Juvenile/Adult 8/18/75 7 6 467 123 Juvenile/Adult 8/27/75 12 6 800 273 Juvenile/Adult 9/12/75 52 6 3,467 1,026 Juvenile/Adult 9/19/75 60 6 4,000 1,556 Juvenile/Adult 10/03/75 57 6 3,800 1,396 Juvenile/Adult 10/07/75 30 6 2,000 1,570 Juvenile/Adult 10/08/75 35 6 2,333 531 Juvenile/Adult 10/10/75 42 6 2,800 1,343 Juvenile/Adult 10/31/75 49 6 3,267 926 Juvenile/Adult 11/20/75 48 6 3,200 1,269 Juvenile/ Adult 12/05/75 8 6 533 169 Juvenile/Adult 12/12/75 64 6 4,267 1,961 Juvenile/Adult 12,/26/75 9 6 600 306 Juvenile/Adult 3.4.2-9

TABLE 3.4.2.;..l (Cont'd)

Standard Deviation Date fl Fish fl Sam:eles Po:eulation Est. of Estimate* Life Stage Paralichthys dentatus 10/10/75 1 6 67 67 Juvenile Pomatomus saltatrix 8/08/75 1 6 67 67 Juvenile 8/11/75 3 6 200 67 Juvenile 3.4.2-10

3.4.3 ICHTHYOPLANKTON ENTRAINMENT STUDY Refer to the following report by the Virginia Institute of Marine Science for preliminary results and conclusions.

3.4.3-0

3.4.3 Ichthyoplankton Entrainment Study Ichthyoplankton Entrainment Study VEPCO Surry Nuclear Power Station Progress Report No. 2, January 1976 by J. V. Merriner and A. D. Estes Virginia Institute of Marine Science Gloucester Point, VA. 23062

• e 3.4.3-1

2 The Ichthyoplankton Entrainment Study at VEPCO Nuclear Pow.er Plant located near Surry, Virginia is ongoing at VIMS.

The study was initiated in April, 1975 through agreement with the Virginia Electric and Power Company. Assessment of the kinds and magnitude* of ichthyoplankton being entrained and

\

. passed through the facility is its goal.

Fish e.ggs and larvae *of many freshwater and some marine species that inhabit lower salinities are found near the VEPCO Surry plant. These organisms, particularly those that are pelagic, are potentially subject to entrainment. Adult, juvenile, and some postlarval. fish can negotiate the water currents developed by the intake pumps and usually avoid entrainment. Our study is directed toward fish eggs and larvae, but specimens of later life stages in our samples are recorded and logged into the data set.

Samples through November, 1975 have been sorted and stored in vials. Individual specimen measurements have been recorded through, the October samples. These data have been logged on I

sheets and punched on computer cards for later analysis.

• statistical analysis of the data will be presented in the final,co:ntract report.

Species lists and abundance of fish eggs, larvae, juveniles, and adults captured in samples through October, 1975 as well as ranges of temperature, salinity, and dissolved oxygen for

• each sampling station are presented in this report.

3.4.3-2

3 Materials and Methods Materials and methods for this study are discussed in the 1

progress report submitted to VEPCO on July 31, 1975.

Results and Discussion Preliminary sampling and two 24-hour sampling stations 1

during April, captured mostly juvenile and adult fishes. Some fish larvae and eggs were present, but only in low numbers.

The most abundant species were Atlantic menhaden (Brevoortia tyrannus), bay anchovy (Anchoa mitchilli), and spot (Leiostomus xanthurus).

To date, the highest diversity of species was captured in May (Table l; Fig. 1). Diversity then tapered off through June to a low in July. August samples indicated an increase in the number of species and this trend continued into September.

The number of species then fell to its lowest point in October.

Numbers of fish captured were low in May (Table l; Fig. 2).

During the first week of June, fish captured increased sharply to their highest concentrations and remained high throughout June and July. August, September, and October showed a gradual decrease to a low point during October.

During May, the presumed height of the spawning season, numbers of individuals remained quite low, although diversity was generally high (Tables 1-9; Figs. 1 & 2). Fish captured during early May were equally represented by larval and juvenile stages. Greatest numbers were recorded for fish eggs, but only one species was found. During the latter part of May, 1 Merriner, J. V., and A. D. Estes. Ichthyoplankton Entrain-ment Study, VEPCO Nuclear Power Station, Progress Report -

July 1975, 2).. p.

3.4.3-3

4 larvae became more prevalent in the samples, but actual numbers remained low. Numbers of juvenile and adult fish declined, especially menhaden and anchovy.

L~rvae of the threadfin shad, Dorosoma petenense and the gizzard shad, Dorosoma cepedianum.were found in May samples in low concentrations. Several specimens of the alosine fishes were captured also. They were usually identified as Alosa species, since identification of the larvae is difficult. Beal, 1968 2 and Lippson, 19743 provide good keys for larval alosine fishes, but these proved ineffective for the larva~ we captured.

Size and condition of the specimens were the limiting factors.

Two species of larval cyprinids (the German carp, Cyprinus carpio and the spottail shiner, Notropis hudsonius) were captured in the May samples, though neither were present in appreciable concentrations. Eggs of the German carp were abundant in samples taken the early .part of May. Their numb.ers decreased as the month progressed. A few eggs were found at the intake, but the majority appeared in the discharge canal samples.

Three species of silversides (Tidewater silverside, Menidia beryllina; Atlantic silverside, Menidia menidia; and the rough silverside, Membras martinica appeared in our May samples. All life stages were represented.

2 Beal, Kenneth Lee. 1968. Age and growth of the blueback herring, Alosa aestivalis (Mitchill). M.A. Thesis, College of William and Mary. 83 pp.

3 Lippson, Alice J. and R. Lynn Moran. 1974. Manual for Identification of Early Developmental Stages of Fishes of the Potomac River Estuary. Environmental Technology Center, Martin Marietta Corporation, Baltimore, Maryland. 282 pp.

3.4.3-4

5 Larval naked gobies, Gobi.aroma bosci, first appeared during early May and became increasingly abundant as May progressed.

Most specimens were captured in night samples and no adults were captured.

Several species were represented by one or only a few specimens. Three species of larval killifish (mummichog, Fundulus heteroclitis; banded killifish, Fundulus diaphanus; and striped killifish, Fundulus majalis) were captured. Some adult fish of these species were also found. One larval centrarchid (bluegill, Lepomis macrochirus) was captured in late May. Several specimens of larval channel catfish, Ictalurus punctatus,were caught in the discharge canal samples.

Juvenile American eel, Anguilla rostrata, were caught at both the intake and discharge.

During May, numbers of individuals captured per unit volume increased, at night. This is attributed to diurnal habits of many species and reduced net avoidance during darkness.

Abundance of larval fish increased sharply during June, Tables 1, 10~17; Fig. 2. The total number of species caught dropped somewhat, but remained fairly high, Table 1; Fig. 1.

Most species captured were represented by only a few fish.

Two species, bay anchovy and naked goby, comprised over 90 percent of the total catch (Tables 10-17). Bay anchovy reached concentrations of 27 per cubic meter of water strained (Table

15) and gobies reached concentrations of 50 per cubic meter (Table 15). In addition, many eggs of the bay anchovy were

- found, reaching concentrations of 119 eggs per cubic meter, Tables 15 , 17 .

3.4.3-5

6 Occurrence of other species was marginal. Most abundant of these were larval silversides, of which the Atlantic silver-sides was most prevalent.

One new species in our collections, the northern pipefish

($yp.gnathus fuscus) was represented by several larvae.

In*July, the diversity decreased significantly (Fig. 1) but abundance remained high. Bay anchovy and naked goby still comprised over 90 per cent of the specimens captured (Tables 18-21). Eggs of bay anchovy were still present, but concentra-tions had dropped from the June levels (119/m3) to less than 25 eggs/meter3 (Tables 19 & 21). No eggs were captured in the July 29-30 samples. The silversides group again represented the majority of the other specimens caught.

• Our mid-August samples indicated continued goby and bay anchovy spawning activity but to a lesser degree. Concentrations of gobies and anchovy in the samples had decreased (Tables 22 and 23). Many of the specimens were in the postlarval stages, but larvae were s.till present in the samples. Fish diversity increased slightly and several new species (weakfish, Cynoscion regalis; hogchoker, Trinectes maculatus; and Atlantic croaker) were in the samples. Juvenile croaker had been captured in the spring, but August specimens were postlarval fish, indicating that .. the 19}5 spawning had begun and the animals were moving upriver into the nursery grounds.

Dominant species in the September sample were still the naked goby and :bay anchovy (Tables 24 & 25).

• Although they comprised a large percentage of the catch, numbers were quite 3.4.3-6

7 low. Concentrations of anchovy exceeded 2 per cubic meter only once and gobies did not reach that concentration (Table 25).

Occurrences of fish in the October samples were erratic and of low density (Tables26and27). Most specimens were either postlarval or juvenile life stages and no species reached a concentration of 2 per cubic meter (Table 27).

Atlantic croaker was the most abundant species in October, followed the bay anchovy. Juvenile blueback herring, Alosa aestivalis,were caught sporatically throughout the sample period, indicating their fall migration from the upriver nursery area had begun.

Most of the fishes were captured at night as had occurred in the preceeding months, but October data revealed even lower than usual daylight fish density.

The sampling schedule is designed to provide intensive sampling during the anticipated period of greatest spawning activity by anadromous and semi-anadromous fishes. May samples indicated an increase in the number of species represented by larval fish, but numbers of larvae captured remained low.

Intensive sampling (weekly) continued through June. This was fortunate in that the greatest larval fish and egg abundance appeared in our June samples , but represented a reduced species diversity. Bay anchovy and naked goby made up over 90 per cent of the specimens caught. Other larval fish were caught, but their numbers remained low.

Surry Nuclear Power Plant is located at the fringe of the freshwater zone. Salinities may vary five to six parts per 3.4.3-7

8 thousand, (Table 30) depending upon meteorological conditions.

During periods of increased runoff, salinities may be lowered to less than one PPT. Conversely, during extended dry spells, salinities may exceed seven PPT. Therefore we would expect to find a mixture of freshwater and estuarine fish plus young of marine migrant species.

We did not anticipate the capture of eggs of nest-building species, but some of the larval and postlarval stages should have been entrained. Very few specimens of this type were found in our samples (i.e. centrarchids and cyprinids).

Pelagi~ spawners, other than bay anchovy, were not as abundant as anticipated. The two Dorosoma species appeared in May and June samples, but numbers were generally quite low.

Larval alosine fishes only appeared in the samples occasionally in the spring months.

A summary of the hydrographic data is presented in Tables 28, 29 and 30.

3.4.3-8

9 Conclusions e Commercially important fish species were not captured in significant numbers. Some juvenile croaker were captured in the late spring and again in early fall. Juvenile spot were also captured in the spring, but neither were prevalent in the samples. Channel catfish were captured, but their numbers were extremely low. Other species of commercial importance rarely appeared in our samples and then only in minute numbers. Our data indicate that very little entrainment of connnercially important fish took place at Surry Nuclear Power Station between May and October 1975.

Forage fishes are being entrained in high numbers.

Although not commercially valuable, these fish play an important role in the estuarine ecosystem. They are a primary source of food for the piscivorous fishes, which are generally the commercially important species.

Concentrations of larval channel catfish, German carp, and carp eggs were significantly higher in the discharge canal.

Some were captured at the intake, but comparisons of catch indicate there are resident populations of these fish located in the high level canal and/or in the discharge canal.

3.4.3-9

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

8 7

6 5

4 3

2 O-'-----------------------'-----------

MAY MAY MAY MAY JUNE JUNE JUNE JUNE JULY JULY AUG SEPT OCT 7-8 14-15 22-2329-30 4-5 11-12 17-18 24-25 9-1029-3013-14 3-4 _15-16 Figure 1. Average number of species caugµt during a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station from May through October, 1975

3. 4. 3-10

11 10,000

- FISH

• ----* EGGS 5,000

,, ... ~\

, .... \

\

,/ \

\

I \

I \

1,000 I \

I \

I \

I \

I \

I \

500 I \

I \

I \

I \

I \

I \

I I ~

\ I I

\ I I

• I I I I~

\ I I I 100 ' I \ I1

\ I I II I I I II T I I II I I I I I 50 I I I I I I I

\ I I  : \

\ I I I I I I I I I I I I I I I I I I I I I I I I I I I 1I I I I I

\ I I I 10 I I I I I

I I

'I

\ I I I \

1 I I I I I I I I \

\ I I I I 5 \ I I I I I I I I I I I I I I I I I I

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MAY MAY MAY MAY JUNE JUNE JUNE JUNE JULY JULY AUG . SEPT OCT 7-8 14-15 22-23 29-30 4-5 11-12 17-18 24-25 9-10 29-30 13-14 3-4 15-16 Figure 2. Total number of fish and eggs captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> stations from May through October, 1975

3. 4. 3-11

12 Table 1. Diversity and number of fish and fish eggs captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> stations from May through October, 1975 Number of Sample Dates ~ Fish Total Species 7-8 May 1542 139 1681 14 14:..15 May 68 348 416 13 22-23 May 0 129 129 19 29-30 May 2 153 155 16 4-5 June 0 2513 2513 12 11-12 June 1356 4449 5805 14 17-18 June 2251 3803 6054 11 24-25 June* 3163 6565 9728 8 9-10 July 199 3737 3936 7 29-30 July 0 5655 5655 8 13-14 Aug. 150 3164 3133 11 3-4 Sept. 1 667 668 11 15-16 Oct. 0 426 426 6 e

3.4.3-12

TABLE 2.e Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 7 - 8 May .

• 5 Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left. Right Left Right Left Right Iil>rosoma species 1000 1 Cyprinus carpio 1 Unidentified A 1 1 2 l))rosoma cepedianum 1 Cyprinus carpio (eggs) 4 207 221 131 139 Anchoa mitchilli 1 Notropis hudsonius 1800 2 Ibrosoma species 1 Ihrosoma cepedianum 4 Cyprinus carpio 1 1 5 4 Alosa pseudoharengus 1 Unidentified A 1 Brevoortia tyranrius 1 1 Anguilla rostrata Leiostomus xanthurus Micropogon undulatus Unidentified (MBR)

Menidia menidia*

Anchoa mitchilli Anchoa mitchilli 0200 1 1 1 1 Menidia beryllina 5 1 1 Cyprinus carpio (eggs) 1 1 4 16 12 80 76 Micropogon undulatus 1 1 2 Leiostomus xanthurus 2 2 2 4 3 2 Brevoortia tyrannus 1 1 2 1 2 Unidentified A 2 Notropis hudsonius 1 Dorosoma species 1 1 Anguilla rostrata 1 Cyprinus carpio Gobiosoma bosci J--1

(..,.)

3.4.3-13

TABLE 2.~continued)

Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Iorosoma species 1400 1 Cyprinus carpio Unidentified A 2 Ibrosoma cepedianum 1 1 1 2 8 7 10 14 Cyprinus carpio (eggs)

Anchoa mitchilli Notropis hudsonius 2200 Ibrosoma species 1 Iorosoma cepedianum Cyprinus carpio 7 2 Alosa pseudoharengus Unidentified A 1 Brevoortia tyrannus 4 3 1 1 Anguilla rostrata 1 Leiostomus xanthurus 1 5 1 Micropogon undulatus 1 Unidentified (MBR) 1 Menidia menidia 1 Anchoa mitchilli 1 Anchoa mitchilli 0600 Menidia beryllina 1 Cyprinus carpio (eggs) 2 1 5 2 11 34 21 85 121 53 271 Micropogon undulatus Leiostomus xanthurus 1 1 Brevoortia tyrannus Unidentified A 1 Notropis hudsonius 2 Dorosoma species 8 8 4 1 1 Anguilla rostrata Cyprinus carpio 1 1 Gobiosoma bosci 1 ,.....

~

3.4.3-14

TABLE 3.-pecies and calculated number of individuals per 100 cubic meter captured during 28our station on 7 - 8 May 1975

.Intake Discharge Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Il>rosoma cepedianum 1000 2 5 Cyprinus carpio(eggs) 9(1ar) 20 .* 819 819 584 572 Unidentified A 9 5 7 Anchoa mitchilli 4 Notropis hudsonius 1800 12 Dlrosoma cepedianum 6 24 Cyprinus carpio(eggs) 4 4 10 16 A J_osa pseudoharengus 4 Unidentified 4 Brevoortia tyrannus 2 4 Anguilla rostrata Leiostomus xanthurus Micropogon undulatus Unidentified A Menidia beryllina Anchoa mitchilli Anchoa mitchilli 0200 6 4 3 3 Dorosoma cepedianum 6 Menidia beryllina 28 4 4 * [ 3 (lar)

Cyprinus carpio(eggs) 6 3 14 7 52 38(e) 268 243 Unidentified A 7 Leiostomus xanthurus 7 7 8 13 9 3 6 Micropogon undulatus 4 3 Brevoortia tyrannus 4 3 6 6 Notropis hudsonius 4 Dorosoma petenense 3 3 Anguilla rostrata 4 Gob iosoma bosci Larvae - lar Eggs - e, 3.4.3-15

e TABLE 3 * (continued)

. e Intake-.. Discharge

-Species Station Time Surface Midwater Bottom Surface Midwater .Bottom Left Right Left Right -Left Right *Left .Right* Left Right Left Right 10rosoma cepedianum 1400 12 4 Cyprinus carpio(eggs) 6 6 4 15 32 27 36 56 Unidentified A

• Anchoa mitchilli Notropis hudsonius 2200 D>rosoma cepedianum 11 Cyprinus carpio(eggs) 28 8 Alosa pseudoharengus Unidentified 4 Brevoortia tyrannus 15 11 4 4 Anguilla rostrata 8 Leiostomus xanthurus 11 18 4 Micropogon undulatus 20 Unidentified A 7 Menidia beryllina 4 Anchoa mitchilli 4 Anchoa mitchilli 0600 Dorosoma cepedianum Menidia beryllina 5 [3 ( lar) \ 4 ( lar)

Cyprinus carpio(eggs) 10 5 53 33 50 128 77 292 571(e) 197(e1)82 Unidentified A 11 Leiostomus xanthurus 5 7 Micropogon undulatus Brevoortia tyrannus Notropis hudsonius 7 Dorosoma petenense 41 36 4 3 3 4 Anguilla rostrata Gobiosoma bosci 5 Larvae - lar Eggs - e t-'

O'\

3.4.3-16

Table 4 . *pecies and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 14 - 15 May 1 ~

Inta'l<e Discharge Station Species Time Surface M idwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right l}:)rosama petenense 1000 2 2 2 3 Cyprinus carpio (eggs) 1 12 17 3 3 4 3 Lelostomus xanthurus Notropis hudsonius 1 Cyprinus carpio 2 Menidia beryllina 1 1 1 Unidentified A 1 Anchoa mitchilli 1 Gobiosoma bosci 1 Cyprinus carpio (eggs) 1800 1 1 1 3 3 Unidentified A 1 5 2 1 1 Ibrosoma petenense 64 54 1 1 1 3 Menidia beryllina 1 Notropis hudsonius 1 1 1 Brevo(j:"tia tyrannus 1 Anchoa mitchilli 1 Cyprinus carpio 1 Anguilla rostrata Leiostomus xanthurus Micropogon undulatus Unidentified (MBR)

Membras martinica Gobi ©soma bosci Notropis hudsonius 0200 2 1 Menidia beryllina 2 1

~ro s0ma petenen s e 1 3 Leiostomus xanthurus 5 1 1 1 1 1 1 Micropogon undulatus 1 Anguilla rostrata

• 1 Anchoa mitchilli 1 1 I-'

Cyprinus carpio (eggs) -..J Unidentified A Cyprinus carpio Brevoortia tyrannus Gobi~som.a bosci 3.4.3-17

TABLE'

'4. l,ecies .and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 14 -

15 May 19.

Species (continued)

Intake Discharge Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right 2

lbro soma petenen StG' 1400 13 1 Cyprinus carpio (eggs) 1 Leiostomus xanthurus Notropis hudsonius 1 Cyprinus carpio Menidia aberyllina Unidentified A 2 2 1 1 1 Anchoa mitchilli Gobi©soma bosci 1 1

Cyprinus carpio (eggs) 2200 1 3 1 5 3 Unidentified A 6 10 4 5 1 1 1 a:>rosoma petenense Menidia beryllina 1 14 3 3 1 1 Notropis hudsonius 1 1 Bre"\tJortia thiannus 1 Anchoa mite illi 1 2 1 Cyprinus carpio 1 Anguilla rostrata 1 1 3 4 1 2 2 2 1 4 3 Leiostomus xanthurus Micropogon undulatus 3 Unidentified (MBR) 1 2 Membras martinica 1 Gabiosoma bosci 5 3 4 Notropis hudsonius 0600 1 Menidia beryllina 1 1 Do.rosoma petenense 1 1 2 1 1 1 Leiostomus xanthurus 1 Micropogon undulatus Anguilla rostrata Anchoa mitcbilli 2 1 1 1 6 1 t-'

Cyprinus carpio (eggs) 1 00 1 2 2 1 1 2 Unidentified A* 2 1 Cyprinus carpio 1

~revoortia tyrannus 1 Gebiosoma bosci 3.4.3-18

TABLE 5. .ecies and calculated number of individuals* captured per 100 cubic meter during 24 station on 14 - 15 May 1975 9ur .

Inta e Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Iorosoma petenense 1000 11 i4 (lar) 3 6 ' 8 Cyprinus carpio 59(e) 4(1ar) 64(e)60(e) 3 8(e) 8(e) 10(e)8(e)

Leiostomus xanthurus 4 Notropis hudsonius 8 Menidia beryllina 3 Unidentified A 3 Anchoa mitchilli 2 Goibiosoma bosci Dorosoma petenense 1800 274 202 4 3 3 8 Unidentified A

• 4 20 18 3 3 Cyprinus carpio 4(lar) 3(e) 3(e) rcar)8(e)

Menidia beryllina 4 e)

Notropis hudsonius 4 4 3 Brevoortia tyrannus 3 Anchoa mitchilli 3 Anguilla rostrata Leiostomus xanthurus Micropogon undulatus Unidentified (MBR)

Membras martinica Gobiosoma bosci Notropis hudsonius 0200 13 7 Menidia beryllina 13 5 Ibro soma petenens e 7 Micropogon undulatus 7 Leiostomus xanthurus 34 5 6 3 18 5 3 Anguilla rostrata 2 Anchoa mitchilli 3 Cyprinus carpio 3(e)

Unidentified A GG>biGslQ'.)Illa bosci I-'

\0 Larvae - lar Eggs - e 3.4.3-19

TABLE

s. e (continued)

Species Station Intake Discharge --

Time Surface Midwater - Bottom Surface Midwater Bottom Ibro soma petenen s e 1400 Left Right 90 Left Ri 6ht Left Right 3

Left Right 5

Left Right Left Right Cyprinus carpio 3(e)

Leiostomus xanthurus Notropis hudsonius 3 Menidia beryllina Unidentified A 18 8 3 Anchoa mitchilli Gobiosoma bosci 9 3 Dorosoma petenense 2200 7 3 Unidentified A 43 70 34 28 3 3 8 3 15 9 Cyprinus carpio 7 3 [6(1ar)3(1ar)

Menidia beryllina 7 3(e)

Notropis hudsonius 101 21 17 3 3 Brevoortia tyrannus 3 3 Anchoa mitchilli 3 Anguilla rostrata 7 Leiostomus xanthurus 7 26 22 5 11 6 5 3 12 9 Micropogon undulatus 26 Unidentified (MBR) 11 Membras martinica 6 Gobiosoma bosci 16 10 10 ,-*_:-_-1 Notroris hudsonius 0600 4 Menid a beryllina Ibrosoma petenense 4 4 8 3 3 Micropogon undulatus 3 Leiostomus xanthurus 3 3 3 3 Anguilla rostrata Anchoa mitchilli [8 (lar)[3 (lar)

Cyprinus carpio 5 (e) 8(e) 3 (e) 3(e) 6(e) 16(e)3(e)

Unidentified A 4 10 8 3 3 6 N

Gobiosoma bosci 3 0 3.4.3-20

TABLE 6. Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 22 - 23 May 197.

Species Station Time Surface Intake MidT"7ater Bottom Surface Discharge Midwater Bottom F

4 D:irosoma petenense Clupidae 1000 Left Right Left Right 1

Left Right 1

Left Right Left Right Left Right Leiostomus xanthurus 1 Menidia menidia 1 Menidia beryllina 1 Ictalurus punctatus 1 Dorosoma. species Gobiosoma- bosci Leiostomus xanthurus 1800 1 3 1 1 1 Menidia menidia 1 Cyprinus carpio 1 1 Antuilla rostrata 1 Go* iosoma bosci 1 Toro soma petenense Micropogon undulatus Unidentified B Membras martinica IDrosoma cepedianum 0200 1 1 Menidia menidia 2 2 Brevoortia tyrannus 1 1 Leiostomus xanthurus 2 1 1 2 1 2 1 Fundulus majalis 1 Gobiosoma bosci 1 1 IDrosoma petenense 1 1 1 Menidia species (MBR) 1 1 Fundulus diaphanus 1 Cyprinus carpio 1 Lepomis macrochirus Fundulus heteroclitis Ibro soma species 1 1 N t-'

3.4.3-21

TMLE e

6. (continued)

Species Station Time Surface

• Intake Midwater Bottom Surface Discharge Midwater Bottom Left Right Left Right Left Right. Left Right. Left Right Left Right i

---

~

Q:irosoma petenense .1400 6 7 9 5 1 1 1* 2 2 1 2 Clupidae Leiostomus xan:thurus 1 l Menidia meaidia 1 1 1 Menidia beryllina 1 Ictalurus punctatus Dorosoma species 1 Gobiosoma bosci 1 1 1 Leiostomus xanthurus 2200 2 5 2 1 Menidia menidia 1 2 3 Cyprinus carpio Anguilla rostrata Gobiosoma' bosci 1 D-0rosoma ]?&itenense 1 1 Micropogon undulatus Unidentified B 1 Membras martinica 1 D>rosoma cepedianum 0600 1 1 1 Menidia menidia Brevoortia tyrannus Leiostomus xanthurus 1 1 1 1 Fundulus majalis Gobiosoma- bosci Dorosoma petenense 1 2 Menidia species (MBR)

Fundulus diaphanus .

Cyprinus carpio 1 Lepomis mactochirus 1 Fundulus heteroclitis 1 N

N 3.4.3-22

the 24 hou.tation TABLE 7. .ecies and calculated number of individuals per- 100 cubic meters during on 22 - 23.May Inta'ke Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right .Left Right Left Right U:irosoma petenense 1000 8 Unidentified (MBR) 8 Leiostomus xanthurus 7 Menidia menidia 6 Menidia beryllina 6 Ictalurus ~unctatus 5 G@biosoma -osci Unidentified A Leiostomus xanthurus 1800 11 21 6 5 5 Menidia menidia 9 Cyprinus carpio 6 5 Anguilla rostrata 6 Gobiosoma bosci 10 Ihrosoma petenense Micropogon undulatus Membras martinica Ibrosoma cepedianum 0200 7 6 Menidia beryllina 8 Brevoortia tyrannus 5 11 5 10 15 4 8 6 Leiostomus xanthurus Fundulus majalis 6 Gobiosoma bosci 5 5 5 8 5 6 Ibrosoma petenense Unidentified A 5 Menidia menidia 14 9 4 Fundulus diaphanus 5 Cyprinus carpio 4 Unidentified (MBR) 6 Lepomis macrochirus Fundulus heteroclitis N I.,)

3.4.3-23

TABLE 7 .. lontinued)

• • ~

Intake Discharge Species Station Time Surface Mid~~ater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right

~

Ibrosoma petenense 1400 54 56 39 18 4 5 4 .7 9 4 9 ,!'-..

Unidentified (MBR)

Leiostomus xanthurus 4 4 Menidia menidia 4 Menidia beryllina 4 4 4 Ictalurus ~ctatus 4 Gebiosoma osci 4 4 Unidentified A 4 Leiostomus xanthurus

/

2200 15 47 14 6 Menidia menidia 8 19 21 Cyprinus carpio All§uilla rostrata Go. iosorna bosci 9 ll:>rosoma petenense 7 Micropogon undulatus 7 Membras martinica 5 Ihro soma cepedianum 0600 4 5 Menidia beryllina Brevoortia tyraonus Leiostomus xanthurus 8 6 5 Fundulus majalis Gobiosorna bosci lbrosorna petenen se 19 11 4 Unidentified A Menidia menidia Fundulus diaphanus Cyprinus carpio 4 Unidentified (MBR)

Lepomis macrochirus 4 Fundulus heteroclitis 4 N

.p-3.4.3-24

TABLE 8. "ecies and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 29 - 30 May 1 9 .

Intake Discharge.

Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right. Left Right Left Right Left -Right Gobiosoma bosci 1000 1 Menidia beryllina Membras martinica Anchoa mitchilli Ibrosoma petenense Unidentified (MBR) 1800 2 Anchoa mitchilli 2 Ibrosoma species 8 2 1 Menidia beryllina 3 1 1 1 1 1 Menidia menidia 3 4 2 Membras martinica 1 Go6.iosoma bosci 1 3 2 1 1 2 2 2 3 Ibrosoma petenense 3 1 Micropogon undulatus 1

_ Ictalurus punctatus Leiostomus xanthurus Cyprinus carpio *

• I'" ~ --

Anguilla rostrata 0200 1 Menidia menidia 2 1 Leiostomus xanthurus 2 1 1 1 1 Gobiosoma bosci 4 1 1 1 1 5 Menidia beryllina 2 Fundulus diaphanus 1 Ibrosoma species 1 Brevoortia tyrannus 1 Fundulus heteroclitis 1 Alosa species Membras martinica

!bro soma petenens e Cyprinus carpio (eggs) N Anchoa mitchilli \.J1 3.4.3-25

TABLE 8*;,* lontinued) q

-* f-Species Station Time Surface Intake Midwater Bottom Surface Discharge Midwater Bottom Gobiosoma bosci 1400 Left Right Left Right Left Right Left Right Left Right Left Right Menidia beryllina 5 Memltras martinica 1 Anchoa mitcbilli 1 lbro soma petenens e 1 Unidentified (MBR) 2200 Anchoa mitchilli Ibro soma species 1 1 Menidia beryllina 1 Menidia menidia 1 Membras martinica Gobiosoma bosci 1 Ibrosoma petenense Micropogon undulatus Ictalurus punctatus 1 1 3 2 Leiostomus xanthurus 1 1 Cyprinus carpio 1 Anguilla rostrata 0600 Menidia menidia 4 1 Leiostomus xanthurus Gobiosoma bosci 2 3 2 2 5 1 1 2 8 7 Menidia beryllina 1 Fundulus diaphanus lbro soma species Brevoortia tyrannus Fundulus heteroclitis Alosa species. - 1 Membras martinica 1 lbro soma petenens e 1 1 Cyprinus carpio (eggs) 1 1 N Anchoa mitchilli 1 1 O'I 3.4.3-26

TABLE 9 . *species and calculated number of individuals per 100 cubic meter during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> st!ion on 29 - 30 May 1975 Species Station Time Surface Intake Midwater Bottom Surface Discharge Midwater Bottom Gobiosoma bosci 1000 Left .Right Left Right Left Right Left Right Left Right 6

Left Right Menidia beryllina Membras martinica Anchoa mitchilli Ibrosoma petenense Anchoa mitchilli 1800 13 Dorosoma petenense 50 13 21 4 4 Menidia beryllina 19 6 9 7 4 5 Menidia menidia 19 18 9 Unidentified (MBR) 13 Membras martinica 9 Gobiosoma bosci 9 9 4 5 10 10 10 14 Micropogon undulatus 4 Ictalurus punctatus Leiostomus xanthurus Cyprinus carpio Anguilla rostrata 0200 9 Menidia menidia 14 9 Brevoortia tyrannus 14 5 Gobiosoma bosci 28 7 5 5 '-;( 37 Menidia beryllina 7 Fundulus diaphanus 10 Leiostomus xanthurus 10 5 6 1'(

Ibr~somapetenense 5 Fundulus heteroclitis 6 Alosa species Membras martinica Cyprinus carpio Anchoa mitchilli N

-...J

• No Meter Reading 3.4.3-27

TABLE e

9., (Continued)

. e Species Station Time Surface Left Right Intake Midwater Le':t Right Bottom Left Right Surface Left Right Discharge Midwater Left Right Bottom Left Right i--

i---

Gobiosoma bosci 1400 Menidia beryllina 53 Membras martinica 7 Anchoa mitchilli 6 J)Orosoma petenens*e 6 Anchoa mitchilli 2200 6 10 Dorosoma petenense Menidia beryllina 6 6 Menidia menidia Unidentified (MBR)

Membras martinica 10 Gobiosoma bosci Micropogon undulatus 6 6 12 10 15 Ictalurus punctatus 6 Leiostomus xanthurus 7 Cyprinus carpio Anguilla rostrata 0600 Menidia menidia 18 5 Brevoortia tyrannus Gobiosoma bosci 27 48 14 10 22 5 8 13 51 Menidia beryllina 7 Fundulus diaphanus Leiostomus xanthurus D>rosoma petenense 5 27 Fundulus tieteroclitis Alo sa species 7 Membras martinica 5 Cyprip.us carpio 6(e) 6 (e)

Anchoa mitchilli 6

• N 00

• No Meter Reading Eggs - e 3.4.3-28

TABLE lOo e Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 4 - 5 June 191 Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bd:: tom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 2 6 2 3 5 1 3 3 6 7 Gobiosoma bosci 1 19 15 18 25 2 1 20 19 22 26 Do~oma petenense 1 Unidentified (MBR) 1 1 Membras martinica Cyprinus carpio Dorosoma cepedianum Anchoa mitchilli 1800 1 1 1 1 3 7 5 Gobiosoma bosci 1 1 22 6 1 2 7 7 10 9 26 38 Membras martinica 2 Do:ir:soma petenense 1 1 Menidia menidia Syngnathus fuscus Alosa aestivalis Leiostomus xanthurus Menidia beryllina Menidia m.enidia 0200 25 18 5 1 3 1 2 3 1 1 1 Gobiosoma bosci 6 8 14 8 14 18 1 3 1 9 10 14 Dol!Eoma petenense 1 1 4 2 Anchoa mitchilli 1 1 2 2 4 1 2 2 2 Membras martinica 1 1 2 1 Notropis species Menidia beryllina Syngnathus fuscus 3.4.3-29

TABLE 10.(continued)

Intal<e Discharge Station Species Time Surface Midwater Bottom Surface Midwater Ba: tom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa -itchilli 1400 1 1 2 1 1 1 Gobiosoma bosci 1 1 4 2 4 2 13 .7 9 13 DoJCSoma petenense 1 Unidentified (MBR)

Membras martinica 1 1 Cyprinus carpio 1 Dorosoma cepedianum 1 Anchoa mitchilli 2200 1 2 3 13 10 11 4 6 11 10 15 18 Gobiosoma bosci 20 33 38 40 39 60 10 15 61 59 102 114 Membras martinica 1 Dol03oma petenense 1 1 1 Menidia menidia 2 10 4 2 2 1 1 3 3 4 Syngnathus fus cus 1 2 Alosa aestivalis 1 Leiostomus xanthurus 1 Menidia ber yllina 1 1 Menidia i:nenidia 0600 1 Gobiosoma bosci 5 3 27 12 194 172 9 27 19 23 220 228 Dom;oma petenense Anchoa mitchilli 3 1 71 56 7 6 6 4 24 23 Membras martinica 1 1 Notropis species 1 2 Menidia beryllina 1 1 Syngnathus fuscus 1 w

0 3.4.3-30

--~-~-------~-----*

TABLE -

• 11. (continued) r-"

Intake Discharge I i--

Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 7 6 10 5 5 5 Gobio$oma bosci 200 23 133 26 27 13 5 35 46 66 Dorosom.a petenense 5 5 Unidentified (MBR)

Membras martinica 143 200 Cyprinus carpio 5 Gobiosoma bosci 2200 164 228 185 179 197 300 48 74 271 267 446 485 Anchoa mitchilli 8 14 15 45 66 55 19 30 44 45 65 77 Membras martinica 5 Dorosoma petenence 4 4 4 Menidia menidia 16 69 20 9 10 5 5 14 13 17 Menidia beryllina 7 5 Syngnathus fuscus 4 10 Alosa aestivalis 5 4 4 Leiostomus xanthurus Gobiosoma bosci 0600 68 29 300 104 855 676 533 160 104 126 1164 1260 Anchoa mitchilli 33 9 313 219 133 36 33 22 127 127 Dorosoma petenense Menidia menidia 6 Membras martinica 6 Menidia beryllina 5 Syngnathus fuscus 6 3.4.3-3!:

TABLE 11.-pecies and calculated number of individuals per 100 cubic meters during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> st,ion on 4 - 5 June 1975 Species Station Intake Discharge --

Time Surface Midwater Bottom Surface Midwater Bottom Left Right Le:':t Right Left Right Left Right Left Right Left Right 20 81 161 6 14 15 28 34 Anchoa mitchilli 1000 29 38 Gobiosoma bosci 15 121 143 316 806 12 6 96 94 103 127 Dorosoma petenense 6 Unidentified (MBR) 5 5 Membras martinica Cyprinus carpio Gobiosoma bosci 1800 16 8 105 23 4 9 48 43 78 64 198 252 Anchoa mitchilli 5 4 7 6 23 53 33 Membras martinica 33 Dorosoma petenense 8 8 Menidia menidia Menidia beryllina Syngna thus fuscus Alosa aestivalis Leiostomus xanthurus Gobiosoma_bosci 0200 140 90 107 58 130 101 5 16 5 43 46 64 Anchoa mitchilli 11 8 14 18 22 5 9 10 9 Dorosoma petenense 23 9 22 15 Menidia menidia 488 205 38 7 18 6 11 16 5 5 5 Membras martinica 8 9 11 5 Menidia beryllina Syngnathus fuscus L,..)

N 3.4.3-32

TABLE 12.tltpecies and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 11 = 12 June 115, Intal<e Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Menidia menidia 1000 12 4 1 Anchoa mitchilli 3 2 11 1 4 1 13 4 35 41 31 40 Gobiosoma bosci 1 99 59 3 1 2 1 53 33 69 53 Anchoa mitchilli(eggs) 3 6 44 44 90 84 42 39 44 47 76 60 Unidentified (MBR) 1 Syngnathus fuscus 1 1 1 1 Leiostomus xanthurus 1 Menidia menidia 1 Menbras martinica Unid.entified A Anchoa mitchilli 1800 4 9 12 264 272 15 20 32 so 38 38 Gobiosoma bosci 1 9 15 31 31 5 1 10 6 13 9 Menidia menidia 4 1 1 Anchoa mitchilli(eggs) 4 14 7 10 11 7 10 13 6 8 7 Membras martinica 1 Leiostomus xanthurus 1 Menidi;,Cberyllina 1 3 1 1 Ictalurus punctatus 1 Anguilla rostrata Unidentified (MBR)

Brevoortia tyrannus Alosa aestivalis Gobiosoma bosci 0200 12 13 92 103 117 109 24 13 52 58 57 66 Anchoa mitchilli 6 9 69 61 234 263 38 16 46 34 55 54 Anchoa mitchilli (eggs) 4 3 3 8 8 13 5 4 5 11 9 8 I.eiostomus xanthurus 1 1 Syngnathus fuscus 1 2 1 1 1 Menidia menidia 1 1 5 1 Menidia beryllina 1 1 Alosa aestivalis 1 l,J l,J Micropogon undulatus 3.4.3-33

e TABLE 12~ (continued)

Species Station Time Surf.ace Intake Midwater Bottom Surface Discharge Midwater

~

Menidia men:l.dia 1400 Left Right Left Right Left Right 6 15 Left Right 10 4 Left Right 70 53 Left 94 Right 77 Anchoa mitchilli 1 6 Gobiosoma bosci 14 19 7 40 35 54 62 Anchoa mitchilli(eggs) 10 7 25 31 15 27 29 20 6 . 20 Unidentified (MBR)

Syngnathus fuscus Leiostomus xanthurus Menidia menidia 20 33 Menbras martinica 1 Unidentified A 1 Menidia berfi:llina 1 2 1 1 2 Anchoa mite illi 2200 1 1 26 35 9 15 4 4 11 12 20 16 Gobiosoma bosci 3 25 23 8 10 2 9 14 31 34 Menidia menidia 1 2 1 1 Anchoa mitchilli 43 27 38 57 11 25 10 11 15 19 35 15 Membras martinica Leiostomus xanthurus 1 Menidia beryllina 1 Ictalurus punctatus Anguilla rostrata 1 1 Unidentified (MBR) 1 4 Brevoortia t~annus 1 Alosa aestivalis 1 Gobiosoma bosci 0600 11 8 17 8 17 30 4 5 16 18 15 11 Anchoa mitchilli 23 14 24 20 41 28 7 5 18 8 15 17 An~hoa mitchilli (eggs) 9 6 4 4 31 40 4 3 1 1 Leiostomus xanthurus 1 Syngnathus fuscus 1 Menidia m;enidia 1 Menidia beryllina 1 1 L,.)

Alosa aestivalis .p-Micropogon undulatus 1 1 3.4.3-34

TABLE 13.

e Species and calculated number of individuals per 100 cubic meter during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> st.on on 11 - 12 June 1975 I'.ntalce Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right 18ft Right Gobiosoma bosci 1000 8 892 431 32 9 8 4 195 123 327 245 Anchoa rnitchilli' 15 13 99 7 42 9 51 16 127 152 147 185 Anchoa rnitchilli (eggs) 15 38 396 321 947 730 163 154 162 175 360 278 Unidentified(MBR) 6 Syngnathus fuscus 9 7 4 4 Leiostornus xanthurus 7 Mernbras rnartinica Menidia beryllina Menidia rnenidia 930 25 9 4 Unidentified Anchoa rnitchilli 1800 114 130 121 1526 1101 51 71 103 168 121 127 Gobiosoma bosci 29 130 152 179 125 17 3 32 20 41 30 Anchoa rnitchilli (eggs) 114 202 70 58 45 23 35 42 20 3 23 Unidentified (MBR)

Menidia rnenidia 114 Mernbras rnartinica 36 14 10 Brevoortia tyrannus 5 Menidia beryllina 4 10 3 3 Tc talurus punc ta tus Anguilla rostrata Leiostornus xanthurus S)Ilgnathus fuscus Anchoa rnitchilli 0200 118 110 413 332 748 799 158 65 158 115 233 236 Gobiosoma bosci 235 156 550 560 374 332 100 53 177 196 242 288 Anchoa rnitchilli (eggs) 78 37 18 43 26 40 16 17 37 38 35 Unidentified Menidia rnenidia 6 3 25 4 Leiostornus xanthurus 12 3 Syngnathus fuscus 6 6 4 3 3 Menidia beryllina *3 4 Alosa aestivalis 3 Lu V,

Micropogon undulatus 3.4.3-35

.e TABLE 13. (continued) e tiita6 Discharge Station Species Time Surface Midvater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right left Right Gobiosoma bosG.i 1400 *194 164 24 145 128 242 268 Anchoa mitchilli 29 83 83 129 35 14 255 193 421 333 Anchoa mitchilli (eggs) 183 80 347 267. 52 93 *105 73 27* 87 Unidentified{MBR)

• Syt?-gnathus fuscus Leiostomus xanthurus Membras martinica 14 9 Menidia beryllina 11 28 9 7 Menidia menidia 571 471 Unidentified 3 Anchoa mitchilli 2200 8 8 243 330 225 231 15 15 36 40 82 62 Gobiosoma bosci 23 234 217 200 154 8 30 47 127 139 Anchoa mitchilli (eggs) 205 355 538 400 385 38 42 49 64 143 61 Unidentified (MBR) 12 16 Menidia menidia 9 25 8 3 3 Membras martinica Brevoortia tyrannus 4 3 4 Menidia beryllina 4 Ictalurus punctatus Anguilla rostrata 8 9 3 Leiostomus xanthurus 9 3 Syngnathus fuscus 9 Anchoa mitchilli 0600 151 88 113 87 188 105 27 20 50 31 59 67 Gobiosoma bosci 72 50 85 35 78 113 115 20 . 62 69 59 43 Anchoa mitchilli (eggs) 59 38 19 17 142 150 16 12 4 4 Unidentified Menidia menidia 4 Leiostomus xanthurus 9 Syngnathus fuscus 4 Menidia beryllina 7 4 uJ Alosa aestivalis Micropogon undulatus 5 4 °'

3.4.3-36

TABLE 14~Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 17 - 18 June . 5 IntaKe Discharge Species Station Surface Midwater Bottom Surface Midwater Bottom Time Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 1 1 46 46 25 15 2 1 9 5 14 18 Anchoa mitchilli (eggs) 7 8 14 24 283 276 88 74 93 75 71 81 Gobiosoma bosci 17 13 21 21 3 4 16 ld 21 24 Anchoa mitchilli 1800 2 1 3 10 5 3 4 6 4 6.7 50 Anchoa mitchilli (eggs) 1 2 16 10 236 268 3 4 7 11 11 9 Gobiosoma bosci 1 7 6 9 13 4 77 68 Syhgnathus fuscus 1 Menidia menidia 1 Membras martinica Brevoortia tyrannus Menidia beryllina Unidentified (MBR)

Anchoa mitchilli 0200 22 8 62 51 37 32 13 15 26 22 29 31 Anchoa mitchilli (eggs) 1 2 4 17 17 6 5 6 6 6 1 Gobiosoma bosci 7 14 94 93 114 133 7 12 16 14 93 72 Syngnathus fuscus 2 1 Membras martinica 2 Leiostomus xanthurus 1 Alosa pseudoharengus 1 Anguilla rostrata 1*

Dorosoma cepedianum (eggs) 1 Menidia menidia 3.4.3-37

TAJ.U.i 1, (continued)

Species Station Time Surface

• Intake Midwater Bottom Surface Discharge Midwater

~

Left Right Left Right Left Right Left Right Left Right Left Right

.~

Anchoa mitchilli 1400 2 1 9 9 24 15 7 4 4 8 21 31 Anchoa mitchilli (eggs) 3 3. 52 71 103 . 128 6 3 5 1 5 10 Gobiosoma bosci 9 7 98' 122 8 4 6 3 20 26 Anchoa mitchilli 2200 3 20 71 66 31 34 10 21 26 20 28 31 Anchoa mitchilli (eggs) 16 18 16 16 14 7 1 1 1 2 2 Gobio$oma bosci 26 11 31 32 25 33 3 6 43 24 18 13 Synfnathus fuscus Mendia menidia 1 5 2 1 1 1 1 Membras martinica 1 Brevoortia tyrannus 1 1 Menidia beryllina 2 1 Unidentified (MBR) 1 1 Anchoa mitchilli 0600 3 7 1 32 30 5 17 15 31 85 80 Anchoa mitchilli (eggs) 1 3 2 4 3 1 1 2 Gobiosoma bosci 6 10 10 20 26 6 10 23 20 278 307 Syngnathus fuscus 1 1 Membras martinica Leiostomus xanthurus Alosa pseudoharengus Anguilla rostrata Dorosoma cepedianum (eggs)

Menidia menidia 1 3.4.3-38

TABLE 15 ~Species and calculated number of individuals per 100 cubic meters during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> s.tion on 17 - 18 June 1975 Species Station Intake Discharge Time Surface Midwater Bottom *. Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa rnitchilli 1000 4 4 193 164 543 469 6 3 28 16 40 55 Gobiosoma bosci 67 46 457 656 10 13 50 32 61 74 Anchoa mitchilli (eggs) 29 33 55 86 6152 8625 283 241 288 238 205 249 Anchoa mitchilli 1800 16 6 22 57 17 10 14 20 13 199 262 Gobiosoma bosci 8 52 34 28 43 13 271 301 Anchoa mitchilli (eggs) 8 12 119 57 742 884 10 14 23 36 36 43 SYn.~nathus- fuscus 3 Menidia menidia 4 Membras martinica Menidia species Leiostomus xanthurus Menidia beryllina Brevoortia tyrannus Anchoa mitchilli 0200 163 43 2696 1214 1027 299 40 37 85 73 88 93 Gobiosoma bosci 52 74 4087 2214 4000 1243 22 47 52 47 281 217

- 18 Anchoa rnitchilli (eggs) 7 87 95 472 159 19 16 20 20 Syngnathus fuscus 15 3 Leiostomus xanthurus 3 Membras martinica 6 Alosa pseudoharengus 3 Anguilla rostrata 3 Dorosoma cepedium 3 3.4.3-39

TABLE 15~continued)

Intake Discharge_

Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left _Right Left Right Left Right 25 14 14 28 62 94 Anchoa mitchilli 1400 20 8 106 69 101 558 Gobiosoma bosci 106 54 412 454 28 14 20 10 59 79 Anchoa mitchilli (eggs) 612 546 433 476. 21 11 17 3 15 30 Anchoa mitchilli 2200 26 97 302 262 136 157 29 62 75 75 77 89 Gobiosoma- bosci 228 53 132 127 110 152 9 18 124 124 50 37 Anchoa mitchilli (eggs) 140 87 68 63 61 32 3 3 3 6 6 Sy*ngnathus fuscus Menidia menidia 24 5 3 3 Membras martinica 5 Menidia species 9 Leiostomus xanthurus 3 Menidia beryllina 6 3 Brevoortia tyrannus 3 Anchoa mitchilli 0600 30 139 51 46 95 263 258 43 29 314 1111 Gobiosoma bosci 61 97 30 70 62 861 990 35 14 1529 5000 Anchoa mitchilli (eggs) 10 42 3 3 6 397 286 4490 11889 Syngnathus fuscus 3 20 Leiostomus xanthurus Membras martinica 7 Alosa pseudoharengus Anguilla rostrata Dorosoma cepedium 3.4.3-40

TABLE 16~Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 24 - 25 June .75 I Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 6 6 16 20 5 1 2 6 30 22 28 32 Anchoa mitchilli (eggs) 56 60 229 214 64 90 162 183 212 173 179 140

. Gobiosoma .bosci 5 3 78 90 12 14 14 9 87 116 402 252 Membras martinica 1 1 Syngnathus fuscus 1 Unidentified (MBR) 1 Menidia beryllina Menidia menidia Anchoa mitchilli 1800 1 49 44 14 6 9 9 24 30 13 21 Anchoa mitchilli(eggs) 6 5 9 12 11 3 9 9 9 8 Gobiosoma bosci 3 10 78 85 31 20 42 53 81 65 76 80 Unidentified (MBR) 1 Notropis hudsonius 1 Menidia menidia Syngnathus fuscus Menidia beryllina Alosa aestivalis Anchoa mitchilli 0200 1 6 29 36 18 21 9 7 19 37 12 16 Anchoa mitchilli (eggs) 1 99 95 128 88 4 15 17 15 19 27 Gobiosoma bosci 3 11 113 133 78 161 16 47 129 131 146 160 Menidia menidia 1 1 1 3 2 1 Menidia beryllina 1 Membras martinica 1 Unidentified (MBR) 3.4.3-41

TABLE 16,(continued)

Species Station Intake Discharge --

Time Surface Midwater Bottom . Surface Midwater Bottom Left Right Le:':t Right Left Left Left Right Left Right Anchoa mitchilli 1400 2 2 11 3 84 Right 94 16 Right 15 28 17 24 22 Anchoa mitchilli (eggs) 58 73 10 7. 45 61 77 *. 76. 77 55 50 54 Gobie>sorp.a bosci 3 3 85 57 169 165 37 49 156 109 144 142 Membras martinica 2 Syn!nathus fuscus Uni entified (MBR) 1 3 2 Menidia beryllina 1 Menidia menidia 1 Anchoa mitchilli 2200 2 2 29 23 10 10 8 12 51 32 12 17 Anchoa mitchilli (eggs) 2 6 12 14 27 3 11 11 6 3 2 Gobiosoma bosci 24 25 13 21 54 38 38 36 127 100 101 86 Unidentified (MBR)

Notropis hudsonius Menidia menidia 1 1 2 Syngnathus fuscus 1 1 Menidia beryllina 1 1 1 Alosa aestivalis 2 Anchoa mitchilli 0600 6 2 93 93 28 16 3 2 11 12 19 11 Anchoa mitchilli (eggs) 5 6 7 3 16 15 2 3 2 4 5 4 Gobisoma bosci 12 6 113 123 43 33 8 5 39 25 53 20 Menidia menidia Menidia beryllina Membras martinica 1 Unidentified (MBR) 1 1 2 3.4.3-42

TABLE 17~ Species and calculated number of individuals per 100 cubic meter during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> s.ion on 24 - 25 June 1975 Station intake - Discharge Species Time* Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 43 29 314 1111 28 5 6 18 84 61 108 121 Gobiosoma bosci 35 14 1529 5000 67 76

• 42 27 243 324 1546 955 Syngnathus fuscus ,20 Anchoa mitcbilli*(eggs) 397 286 4490 11889 356 489 75 550 592 483 688 530 Membras martinica 7 3 *4 Unidentified Menidia beryllina Unidentified (MBR)

Menidia menidia Gobiosoma bosci 1800 500 2000 494 720 260 127 100 128 214 163 264 250 Anchoa mitchilli 200 310 373 118 38 21 22 69 81 45 66 Anchoa mitchilli (eggs) 1000 1000 57 102 92 19 22 24 24 25 Unidentified (MBR) 2 Notropis hudsonius 3 Menidia menidia Syngnathus fuscus Menidia beryllina Alosa aestivalis Anchoa mitchilli 0200 7 162 139 273 178 189 23 18 58 114 44 53 Anchoa mitchilli (eggs) 7 474 720 772 793 10 39 52 46 69 89 Gobiosoma bosci 22 297 541 1008 1267 1450 41 122 397 404 533 530 Menidia menidia 7 5 8 9 6 4 Menidia beryllina 27 Membras martinica 9 Unidentified (MBR) 3.4.3-43

TABLE 17~continued) e Species Station Intake Discharge --

Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left

• Right Left Right Left Right Anchoa mitchilli 1400 22 19 58 16 382 427 41 40 75 45 96 79 Gobiosoma bosci 34 29 445 297 745 750 96 131 416 285 578 ~507 Syngnathus fuscus Anchoa mitchilli (eggs) 652 702 52 37 205 277 199 203 205 139 201 193 Membras martinica 22 Unidentified 10 Menidia beryllina 5 Unidentified (:MBR) 8 7 Menidia menidia 4 Gobiosoma bosci 2200 146 147 191 236 482 469 101 98 353 272 321 272

• Anchoa mitchilli 12 12 426 258 89 123 21 33 142 87 38 54 Anchoa mitchilli (eggs) 12 882 135 125 333 8 30 31 10 6 Unidentified (MBR)

Notropis hudsonius 6 Menidia menidia 3 6 Syngnathus fuscus 11 9 Menidia beryllina 3 3 3 Alosa aestivalis 6 Anchoa mitchilli 0600 41 15 306 302 237 115 9 6 31 37 34 54 Anchoa mitchilli (eggs) 34 44 23 10 136 107 6 9 6 12 12 14 Gobiosoma bosci 82 44 372 399 364 345 23 14 111 76 61 150 Menidia menidia Menidia beryllina 3 Membras martinica Unidentified (MBR) 3 6 3.4.3-44

TABLE l.Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 9 - 10 July Is Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 1 3 5 2 8 5 42 10 83 . 71 Gobiosoma bosci 3 2 4 9 1 25 14 129 91

• Anchoa mitchilli (eggs) 3 5 4 1 3 2 1 Unidentified (MBR) 1 2 1. 2 Menidia menidia 1 Lepomis gibbosus Anchoa mitchilli 1800 2 49 51 26 24 11 12 16 10 23 14 Gobiosoma bosci 6 5 42 44 21 26 16 17 20 29 61 65 Anchoa mitchilli (eggs) 2 3 2 2 2 1 3 Unidentified (MBR) 2 1 1 Menidia menidia Alosa aestivalis Anchoa mitchilli 0200 1 1 63 35 52 69 38 12 40 39 53 51 Gobiosoma bosci 8 11 53 36 90 185 41 4 112 82 162 177 Unidentified (MBR) 2 Anchoa mitchilli (eggs) 2 1 Membras martinica 1 3.4.3-45

DILE 1f (continued)

Species Station

• _Time Surface Intake Midwater

• Bottom Surface Discharge Midwater Bottom

~

Left Right Left Right Left Right Left Right Left Right Left Right

~

Anchoa mitchilli 1400 2 69 74 16 34 25 19 44 31 Gobiosorna bosci 9 6 10 10 7 6 27 20 56 63 -

Anchoa mitchilli (eggs) 3 17 16 8 4 17 15 18 18 17 23 Unidentified (MBR) . . 1 1 Menidia menidia Lepomis gibbosus 1 Anchoa mitchilli 2200 2 3 5 2 4 1 6 1 15 10 18 17 Gobiosorna bosci 1 3 26 37 10 4 4 3 38 17 144 88 Anchoa mitchilli (eggs) 1 1 1 2 1 Unidentified (MBR) 3 1 Menidia menidia 1 Alosa aestivalis 1 Anchoa mitchilli 0600 2 6 4 16 4 1 3 10 5 14 24 Gobiosorna bosci 14 8 8 11 8 3 11 15 23 23 Unidentified (MBR) 1 Anchoa mitchilli (eggs)

Membras martinica 3.4.3-46

TABLE 19~ Species and calculated number of individuals per 100 cubic meters captured during. hour station on July 9 - 10 1975 Intake Discharge Station Species Time Surface Mi.dwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 15 8 2500 50 35 22 175 42 395 *296 Gobiosoma bosci 8 19 2000 100 .4 104 58 586 380 Anchoa mitchilli (eggs) 29 2500 225 4 13 8 5 Menidia menidia 5 Lepomis gibbosus Anchoa mitchilli 1800 13 1000 280 463 130 421 46 52 37 66 201 52 Gobiosoma bosci 40 240 400 105 456 67 74 107 83 540 93 Anchoa mitchilli (eggs) 11 35 8 9 4 10 Menidia menidia Alosa aestivalis Anchoa mitchilli 2000 7 8 650 282 289 885 163 55 174 174 346 300 Gobiosoma bosci 56 88 546 290 500 2371 184 18 487 366 1058 1054 Anchoa mitchilli (eggs) 9 6 Membras martinica 7 3.4.3-47

TABLE 19~(continued) e lo-Intake Discharge .*

Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left

• Right Left Right Left Right r-Anchoa mitchilli 1400 23 74 1061 389 70 133 89 70 142 103 Gobiosoma.bosci 333 43 154 52 30 24 100

• 74 55 210

• Anchoa mitchilli (eggs) . 629 114 123 21 74 59 68 67 181 67 Menidia menidia Lepomis gibbosus 4 Anchoa mitchilli 2200 35 375 116 91 182 59 32 6 82 56 104 97 Gobiosoma bosci 18 375 604 168 454 235 21 19 206 96 828 500 Anchoa mitchilli (eggs) 5 6 12 6 Menidia menidia 6 Alosa aestivalis 6 Anchoa mitchilli 0600 74 130 121 270 143 142 5 15 49 24 77 133 Gobiosoma bosci 518 174 242 177 177 285 15 52 72 127 128 Anchoa mitchilli (eggs)

Membras martinica 3.4.3-48

TABLE 20~pecies and number of individuals captured during 24*hour station on 29 - 30 July . 5 Inta'Ke Discfiarge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 22 10 3 3 3 2 5 6 5 4*

Gobiosorna bosci 147 151 11 12 7 8 9 24 40 26 Menidia menidia Cyprinus carpio Unidentified (MBR) 1 Menidia beryllina Anchoa mitchilli 1800 17 2 110 80 152 154 8 12 14 20 56 61 Menidia beryllina 1 Gobiosoma bosci 5 5 33 30 17 14 25 36 38 51 Menidia menidia 1 Unidentified (MBR) 2 Micropogon undulatus Anchoa mitchilli 0200 5 2 32 53 4 5 9 12 41 56 19 29 Gobiosoma bosci 2 3 64 61 19 23 42 39 96 95 351 250 Alosa aestivalis 1 1 1 Micropogon undulatus 1 Menidia beryllina 1 Unidentified (MBR) 1 Anguilla rostrata 1 3.4.3-49

TABLE 2. (continued) .e Intake . Discharge Species Station Time Surface 'Midwater Bottom Surface Midwater -~

,Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 1 11 25 2 2 6 1 26. 17 17 31 Gobiosoma bosci 1 1 65 66 3 3 8 22 39 37 92 169 Menidiamenidia Cyprinus carpio .

Unidentified (MBR)

Menidia beryllina 1 Anchoa mitchilli 2200 40 61 14 27 11 9 36 29 22 25 Menidia beryllina Gobiosoma bosci 97 106 8 8 11 12 47 35 48 54 Menidia menidia Unidentified (MBR)

Micropogon undulatus 1 Anchoa mitchilli 0600 6 5 170 125 77 92 18 6 84 70 36 28 Gobiosoma bo5-ci 2 107 135 84 95 20 27 122 131 48 54 Alosa aestivalis Micropogon undulatus 1 1 Menidia beryllina Unidentified (MBR) 1 Anguilla rostrata V1 0

3.4.3-50

Table 21.

eSpecies and calculat.ed number of individuals captured per 100 cubic metiars during 2,hoUr station on 29-30 July, 1975 Intake Discharge Station Species .Time Surface Midwater

• Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 4 85 141 13 13 8 5 17 15 22 18 Gobiosoma bosci 568 2127 47 50 18 21 .67 26 171 117 Anchoa mitchilli 1800 72 8 340 258 553 592 20 30 38 51 221 250 Gobiosoma bosci 16 120 115 43 35 68 93 150 209

• Menidia beryllina 4 Menidia menidia 3 Anchoa mitchilli 0200 26 9 137 241 100 79 102 30 113 159 8 140 Gobiosoma bosci 11 13 274

• 278 302 365 107 98 265 270 1500 1208 Anchoa mitchilli 1400 8 41 98 20 18 18 3 75 48 73 124

• Gobiosoma bosci 8 241 260 29 27 24 65 112 105 394 676 Menidia beryllina 4 Anchoa mitchilli 2200 1053 212 292 509 31 26 104 79 70 86 Gobiosoma bosci 2553 368 16 7 151 31 35 136 95 64 171 Menidia menidia

• 7 Anchoa mitchilli 0600 29 25 545 374 291 349 47 14 258 210 131 123 Gobiosoma bosci 10 343 404 317 360 52 64 374 393 175 234 3.4.3-51

e Table 22.

• Species and number of individuals captured e

during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 13-14 August 1975.

Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 7 11 37 40 13 14 6 5 4 8 13 9 Menidia beryllina 11 1 1 2 1 Gobiosoma bosci 19 27 47 45 9 6 16 10 32 28 Membras martinica Anchoa mitchilli (eggs) 1 Menidia menidia 1 MBR Anchoa mitchilli 1800 7 25 27 20 30 18 12 12 30 56 38 Gobiosoma bosci 2 11 30 29 20 16 34 25 40 47 42 Anchoa mitchilli (eggs) 4 2 3 1 1 1 Micropogon undulatus 1 MBR 1 Unidentified (egg) 1 Cynoscion regalis Trinectes maculatus Anchoa mitchilli 0200 1 44 67 27 32 18 22 25 32 30 32 Gobiosoma bosci 30 44 32 39 42 30 51 52 114 118 Micropogon undulatus 1 1 1 2 1 Anchoa mitchilli (eggs) 1 Alosa aestivalis 1 Syngnathus fuscus MBR Menidia beryllina Gobiosoma bosci(eggs)

U1 N

3.4.3-52

Table 22. - (continued)

Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 9 3 2 5 -9 16 11 7 19 Menidia beryllina 1 Gobiosoma bosci 20 9 3 10 5 22 16 19 27 Membras martinica Anchoa mitchilli (eggs)

Menidia menidia MBR 2 Anchoa mitchilli 2200 1 27 41 20 49 17 16 18 24 28 21 Gobiosoma bosci 9 46 6 38 11 20 15 12 23 24 Anchoa mitchilli (eggs) 1 2 58 67 1 1 Micropogon undulatus 2 2 2 2 6 2 5 3 MBR 1 Unidentified (egg)

Cy~oscion regalis 1 Trinectes maculatus 1 Anchoa mitchilli 0600 .6 10 37 - 20 22 26 15 18 15 16 32 22 Gobiosoma bosci 2 3 65 56 22 27 16 26 .22 16 32 35 Micropogon undulatus -1 1 1 1 Anchoa mitchilli (eggs) 2 1 Alosa aestivalis Syngnathus fuscus 2 MBR 1 Menidia beryllina 1 Gobiosoma bosci(eggs) 2

Table 23.

e Species and calculated number of individuals per 100 cubic.meter captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> e

station on 13-14 August, 1975.

Intake Discharge Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Le:':t Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 24 31 101 109 65 9l;'c 16 14 12 21 43 31 6+

Menidia beryllina 38 3 3 10 Gobiosoma bosci 52 74 235 292 25 17 38 26 105 97 Membras martinica 6 Menidia menidia 3 Anchoa mitchilli 1800 18+ 27-1, 71 76ic 152;\- 246;'c 51 36* 32 83 210 145 8+ 8+ 8+ 8+ 3+

Gobiosoma bosci 9 43 85 82 152 131 97 77 106 69 176 160 Micropogon undulatus 3 MBR 4+

Cynoscion regalis Trinectes maculatus Anchoa mitchilli 0200 11 224 349 1929 2750 66 84;'c 71 94* 99 115 4+ 6+

Gobiosoma bosci 153 229 2286 3250 154 115 147 152 375 424 Micropogon undulatus 83 4 4 3 3 Alosa aestivalis 4 Syngnathus fuscus Menidia beryllina MBR

• Larvae

+ Eggs 3.4.3-54

Table 23.

e(continued)

Species Station Intake Discharge -

~

Time Sur.face ~idwater Bottom Surface Midwater Left Right Left Right Left Right Left Right* Left Right Left Right Anchoa mitchilli 1400 57 16 29 125 15 27 48 52 23 63 Menidia beryllina Gobiosoma bosci 127 49 188 31 15 66 76 64 90 Membras martinica Menidia menidia MBR 10 Anchoa mitchilli 2200 7 24+ 79* 121;'( 53 135;*, 50*k 47 50 70 112 82;',

6+ 171+ 184+ 3+ 4+

Gobiosoma bosci 26 136 16 104 32 59 41 35 92 94 Micropogon undulatus 6 5 6 6 17 6 20 12 MBR Cynoscion regalis 3 Trinectes maculatus 3 Anchoa mitchilli 0600 37 833 118 7* 72 101 123;', 45 56 42 4 7;', 102 72 7+ 5+ 3+

Gobiosoma bosci 12 250 212 202 101 128 48 82 62 47 102 115;'-'

7+

Micropogon undulatus 3 3* 3 3 Alosa aestivalis Syngnathus fuscus 6 Menidia beryllina 3 MBR 3

• Larvae

+ Eggs V1 V1 3.4.3-55

Table*24.

e Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 3-4 September., 1975.

e Species Station Intake Discharge -

Time Surface Midwater Bottom Surface Midwater

. Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 5 4 1 1 1 1 8 2 Gobiosoma bosci 1 1 2 1 1 5 2 MBR 1 Menidia menidia 1 Syngnathus fuscus Anchoa mitchilli 1800 12 7 2 3 1 2 4 9 6 6 6 Gobiosoma bosci 1 1 1 2 1 1 5 1 Gobiosoma bosci(eggs) 1 Menidia species Membras martinica Menidia beryllina Micropogon undulatus MBR Menidia menidia Anguilla rostrata Anchoa mitchilli 0200 2 3 21 14 25 10 7 7 11 7 17 18 Notropis bifrenatus 1 Gobiosoma bosci 1 2 3 1 1 1 2 2 1 4 Menidia menidia 1 1 Trinectes maculatus 1 2 Menidia beryllina 1 Alosa aestivalis 1 1 Micropogon undulatus 1 3.4.3-56

Table 24.

e(continued) e

.Intake .* Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 9 6. 1 3 *1 1 1 4 6 Gobiosoma bosci 1 2 1 2 3 2 4 MBR Menidia menidia 2 2 1 1 Syngnathus fuscus 1 Anchoa mitchilli 2200 36 21 5 2 7 15 13 18 21 21 Gobiosoma bosci 9 4 6 2 3 1 .4 2 12 13 Gobiosoma bosci(eggs)

Menidia species 1 Membras martinica 1 1 Menidia beryllina 1 1 Micropogon undulatus 1 1 1 MBR 1 Menidia menidia 1 Anguilla rostrata 1 Anchoa mitchilli 0600 3 5 17 10 .5 3 5 11 12 8 Notropis bifrenatus Gobiosoma bosci 4 2 4 3 2 9 3 Menidia menidia Trinectes maculatus Menidia beryllina 1 Alosa aestivalis Micropogon undulatus 3.4.3-57

Table 25.

e Species and calculated number of individuals per 100 cubic meters captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 3-4 September 1975 Intake Discharge Species Station Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa rnitchiili 1000 151 69 3 3 3 3 33 8 Gobiosoma bosci 30 17 6 3 3 21 8 Anchoa mitchilli (eggs)

Menidia beryllina 4 Syngnathus fuacus Menidia menidia Anchoa mitchilli 1800 64 34 9 59 20 6 13 24 20 19 15 Gobiosoma bosci 5 5 6 3 3 16 2 Menidia menidia 20 Menidia species Membras martinica Menidia beryllina Micropogon undulatus MBR Anguilla rostrata I

Anchoa mitchilli 0200 11 16 66 43 93 25 17 19 31 19 58 58 Gobiosoma bosci 3 11 3 3 3 6. 6 34 13 Notropis bifrenatus 5 Menidia menidia 3 6 3 Trinectes maculatus 3 3.

Menidia beryllina 6 34 Alosa aestivalis 3 3 Micropogon undulatus 3 V1 CX>

3. 4. 3-ss*

Table 25.

e (continued)

Species Station Intake Discharge -

Time Surface Midwater Bottom Surface Midwater Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 31 18 4 10 3 3 1 14 21 Gobiosoma bosci 3 8 21 6 9 7 14 Anchoa mitchilli (eggs)

Menidia beryllina Syngnathus fuscus 4 3 Menidia menidia 8 43 18 3 Anchoa mitchilli 2200 240 112 143 53 22 44 42 56 62 59 Gobiosoma bosci 60 21 171 53 9 3 13 6 37 37 Menidia menidia 3 3 Menidia species 7 Membras martinica 26 Menidia beryllina 3 Micropogon undulatus 3 3 3 MBR 3 Anguilla rostrata 3 Anchoa mitchilli 0600 15 22 189 80 17 10 16 33 52 34 Gobiosoma bosci 20 9 45 24 7 39 13 Notropis bifrenatus Menidia menidia Trinectes maculatus Menidia beryllina 5 Alosa aestivalis Micropogon undulatus 3.4.3-59

Table 26.

e Species and number of individuals captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 15-16 October, 1975 e

Intake Discharge Species Station Time Surface Midwater Bottom Surface Midwater Left Right Left Right Left Right Left Right* Left Right Left Right Anchoa rnitchilli 1000 1 1 1 Gobiosorna bosci 1 Micropogon undulatus 1 Alosa aestivalis Menidia beryllina Micropogon undulatus 1800 2 1 1 1 1 Alosa aestivalis 5 12 2 3 1 6 Anchoa mitchilli 2 2 2 Gobiosorna bosci 1 Micropogon undulatus 0200 1 2 5 9 19 16 5 6 Menidia beryllina 4 2 Anchoa rnitchilli 3 2 3 1 1 Alosa aestivalis 1 1 Gobiosorna bosci Etheostorna olrnstedi

°'

0 3.4.3-60

Table 26. ~continued)

Intake Discharge Species Station Time Surface Midwater Bottom Surface Midwater Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1400 1 1 1 1 Gobiosoma bosci 1 1 Micropogon undulatus Alosa aestivalis 1 1 1 Menidia beryllina 1 2 Micropogon undulatus 2200 1 21 28 ,9 6 Alosa aestivalis Anchoa mitchilli 4 4 2 2 1 1 1 Gobiosoma bosci Micropogon undulatus 0600 25 18 6 4 17 38 24 32 Menidia beryllina 1 Anchoa mitchilli 8 11 1 1 3 3 1 5 Alosa aestivalis 1 1 2 1 Gobiosoma bosci 1 1 Etheostoma olmstedi 1 3.4.3-61

Table 27.

e e Species and calculated number of individuals per 100 cubic meters captured during 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> station on 15-16 October, 1975 Intake Discharge Station Species Time Surface Midwater Bottom Surface Midwater Bottom Left Right Left Right Left Right Left Right Left Right Left Right Anchoa mitchilli 1000 6 6 8 Gobiosoma bosci 4 Menidia beryllina Micropogon undulatus 4 Anchoa mitchilli 1800 10 10 12 6 Gobiosoma.bosci 6 Micropogon undulatus 14 15 6 6 Alosa aestivalis 24 59 12 19 6 37 Anchoa mitchilli 0200 16 9 14 2 3 Gobiosoma bosci Micropogon undulatus 4 11 24 42 45 38 17 21 Menidia beryllina 16 8 Alosa aestivalis 5 2 Etheostoma olmstedi Anchoa mitchilli 1400 5 4 4 4 Gobiosoma bosci 5 4 Menidia beryllina 4 Micropogon undulatus 7 Alosa aestivalis 4 4 4 Anchoa mitchilli 2200 l-3 53 44 87 4 4 4 Gobiosoma bosci Micropogon undulatus 22 8 115 39 26 Alosa aestivalis Anchoa mitchilli 0600 11 15 4 4 14 14 4 20 Gobiosoma bosci 1 4 Micropogon undulatus 34 24 26 17 80 178 92 12 7 O'\

Menidia beryllina 4 I',.)

Alosa aestivalis 1 4 9 4 Etheostoma olmstedi 5 3.4.3-62

63 Table 28. Extremes of water temperature (°C) taken during the.

e 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> stations from May through October, 1975 DATE INTAKE DISCHARGE Surface Midwater Bottom Surface Midwater Bottom May 7-8 HIGH 20 20 20 25 25 25 LOW 18 17 18 23 23 22 May 14-15 HIGH 23 23 23 26 26 26 LOW 20 20 20 23 24 23 May 22-23 HIGH 28 28 26 31 31 31 LOW 24 24 24 29 29 29 May 29-30 HIGH 27 27 27 30 31 32 LOW 24 24 24 28 29 30 June 4-5 HIGH 30 29 28 35 35 33 LOW 24 24 24 31 30 30 June 11-12 HIGH 25 25 25 29 28 27 LOW 23 22 22 27 26 27 June 17-18 HIGH 30 29 28 33 32 32 LOW 22 26 26 31 30 30 June ?4-25 HIGH 30 28 29 33 32 32 LOW 26 26 26 30 30 30 July 9-10 HIGH 29 29 28 33 33 33 tow 24 26 26 32 30 30 July 29-30 HIGH 30 28 29 33 33 32 LOW 27 27 27 30 31 30 Aug 13-14 HIGH 31 30 30 38 37 J7 LOW 26 26 27 36 34 33 Sept 3-4 HIGH 27 27 27 35 35 34 LOW 25 25 25 32 32 32

.Oct 15-16 HIGH 24 23 22 27 26 26 LOW 20 21 20 22 23 22 3.4.3-63

64 Table 29. Extremes of dissolved oxygen (PPM) taken during the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> stations from May through October, 1975 INTAKE DISCHARGE DATE Surface Midwater Bottom Surface Midwater Bottom May 7-8 HIGH 8.9 8.9 8.6 8.5 8.6 8.9 LOW 7.8 7.6 8.0 7.8 7.9 7.9 May 14-15 HIGH 9.3 9.6 9.8 9.2 8.2 9.2 LOW 8.3 6.8 8.2 7.7 7.7 7.7 May 22-23 *HIGH 8.3 7.9 8.3 7.2 7.6 8.1 LOW 6.7 6.9 7.2 6.8 6.7 6.8 May 29-30 HIGH 9. 3,'( 8.3 9.8 7.0 7.5 7.7

- LOW 7.0 6.1( 7.0 6.8 6.8 6.7 June 4-5 HIGH 10.0 8.2 8.3 8.2 7.6 7.9 LOW 6.8 6.9 6.9 6.4 6.8 6.9 June 11-12 HIGH 8.1 8.3 9.4 7.6 7.8 7.6 LOW 7.1 6.9 7.4 7.1 7.2 5.2 June 17-18 HIGH 7.7 8.0 7.9 7.8 7.6 7.3 LOW 6.3 6.6 6.7 6.6 6.8 6.6 June 24-25 HIGH 9.1 8.4 8.5 8.5 7.7 11.6 LOW 7.1 7.3 7.2 3.6 7.1 7.0 July 9-10 HIGH 7.9 9.1 9.3 6.9 7.3 7.3 LOW 5.7 6.5 6.6 5.9 2.7 6.2 July 29-30 HIGH 9.1 8.4 8.0 7.1 8.5 8.5 LOW 5.8 6.5 6.4 6.0 6.2 5.7 Aug 13-14 HIGH 8.2 7.9 7.3 7.1 6.9 7.1 LOW 4.9 5.3 4.9 5.4 5.4 5.7 Sept 3-4 HIGH 7.3 7.6 7.9 7.4 7.3 7.3 LOW 6.1 5.8 6.0 5.3 5.3 5.3 Oct 15-16 HIGH 9.6 8.5 9.0 9.4 7.7 7.9 LOW 6.8 7.4 6.6 - 6. 8 6.2 7.2

,'( _Overran 3.4.3-64

(

65 Table 30. Extremes of salinity (PPT) taken during the 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> stations from May through October, 1975 DATE INTAKE DISCHARGE.

Surface Midwater Bottom Surface Midwater Bottom May 7-8 HIGH 1. 2 1. 2 1. 2 1.2 1. 2 1. 2 LOW 0.7 0.9 0.8 0.8 0.8 0.8 May 14-15 HIGH 0.6 0.7 0.7 0.7 0.7 0.6 LOW 0.3 0.4 0.4 0.4 0.3 0.4 May 22-23 HIGH 0.5 0.5 0.6 0.5 0.5 0.5 LOW 0.4 0.4 0.4 0.4 0.4 0.4 May 29-30 HIGH 1. 3 1.4 1.5 1.0 1. 0 1. 0 LOW 0.6 0.6 0.8 0.7 0.7 0.7 June 4-5 HIGH 1. 9 2.4 2.5 2.0 2.0 2.0 LOW 0.8 1.0 1.0 1.0 1.0 1.0 June 11-12 HIGH 5.1 6.7 5.4 5.1 5.2 5.1 LOW 4.5 4.6 4.7 4.6 4.5 4.6 June 17-18 HIGH 3.9 3.8 3.9 4.0 3.9 3.9 LOW 3.3 3.3 3.5 3.3 3.4 3. 4 .

June 24-25 HIGH 3.7 3.8 3.8 3.6 3.6 3.7 LOW 3.2 3.2 3.2 3.3 3.2 3.2 July 9-10 HIGH 6.4 6.6 6.6 6.5 6.5 6.5 LOW 6.0 6.1 6.1 6.0 6.0 6.0 July 29-30 HIGH 1.1 1.2 1.2 1.2 1.1 1. 2 LOW 0.8 0.7 0.8 0.8 0.8 0.8 Aug 13-'14 HIGH 4.9 4.9 6.0 5.8 5.7 5.9 LOW 3.7 4.0 4.2 4.0 4.0 4.0 Sept 3-4 HIGH 5.8 5.9 6.0 5.8 5.7 5.9 LOW 5.2 5.3 5.1 5.2 5.1 5.1 Oct 15-16 HIGH 2.3 2.2 2.2 2.0 2.0 2.0 LOW 1. 2 1.3 1.6 1.6 1.6 1.6 3.4.3-65

3.4.4 THERMAL PLUME ENTRAINMENT OF ICHTHYOPLANKTON Refer to the following report by the Virginia Institute of Marine Science for preliminary results and conclusions.

3.4.4-0

3.4.4 Thermal Plwne Entrainment of Ichthyoplankton Thermai Plume Entrainment of Ichthyoplankton at the VEPCO Surry Nuclear Power Station Progress Report No. 2 January 1976 by John V. Merriner and A. Deane Estes Virginia Institute of Marine Science

Ichthyoplankton entrainment in the heated effluent plume from the Surry Nuclear Power Plant is being evaluated by the Ichthyology Department at VIMS. The studies were initiated in August, 1975 as an extension of the existing plant entrainment study and sampling will continue through June, 1976.

The study is designed to assess entrainment of ichthyo-plankton in the water of Cobham Bay by the heated effluent.

As the effluent and existing river water mix, some portion of the ichthyoplankton in the existing river water will be swept into the mixing area. Larger fish, i.e. juveniles and adults, that have better swimming capabilities can negotiate the currents and avoid the elevated temperatures or select the wanner water and maintain their position in the plume, but fish eggs and larvae cannot. These small fish are then caught in the mixing zone (entrained) and swept along in the plume.

Kinds and numbers of eggs, larvae, and juvenile fish captured in and near the thennal plume through the December sampling periods are presented in this report.

Materials and Methods Field methods and sampling design used in the evaluation of plume entrainment were detailed in the progress report 1

submitted to VEPCO in October, 1975 1 Merriner, J. V. and A. D. Estes. Thennal Plume Entrainment of Ichthyoplankton at the VEPCO Surry Nuclear Power Station, Progress Report - October 1975, 12 p.

3.4.4.-2

2 This study will provide a measurement of the abundance and kinds of fishes being entrained by the heated water plume from the power station. One sampling station is in the discharge canal to provide documentation of organisms in the heated water from the plant. Two stations are in an area of ambient water temperature to provide documentation of organisms in the river proper. Two stations are in the thermal plume to document the organisms present after mixing has occurred. Comparison of catches from the three areas provides information on organisms that are being entrained by the heated wafer plume.

Results and Discussion Results from plume entrainment samples taken from August through September were discussed in the October, 1975 Progress Report 1 . Numbers of fishes were generally low but data from replicate tows were rather variable. An average of four species were captured per station during August and three species per station in September.

Bay anchovy, Anchoa mitchilli and the naked goby, Gobisoma bosci were the most abundant species during August and September ( 90 percent of the total catches). Other species included tidewater silverside (Menidia beryllina),

Atlantic silverside (Menidia menidia), blueback herring (Alosa aestivalis), threadfin shad (Dorosoma petenense), and Atlantic croaker (Micropogon undulatus).

Sampling during August and September was conducted only during daylight hours (J. White - personal communication).

3.4.4-3

3 These samples yielded few fish and examination of earlier as well as concurrent plant entrainment data showed a significant increase in catch at night. We therefore sampled the plume during night and day on a trial basis. The number of species generally doubled during the night (Tables 1 and 2).

Concentrations at night were sometimes 50 times those in daylight when based as number of fish caught per 100 cubic meters of water strained (Table 2). After consultation with VEPCO personnel (see Appendices), it was decided that night sampling should be incorporated into the program. Day and night samples are now taken for evaluation of plume entrainment.

Dominant species in the October samples were the Atlantic croaker and blueback herring (Table 1). Most of these were caught in the nighttime sample on 23 October. This sample contained only two tows since thick fog caused cancellation.

The station was not repeated since it was experimental. Data from these two tows were adequate to show the day-night difference. Only two species were captured in five tows during the day, whereas at night, six species were captured in two tows (Table 1). Concentrations of fish also increased significantly at night (two individuals versus 67 individuals).

November and December yielded similar results. Very few, if any fish were captured during the daylight sampling and at night the number of species and number of organisms captured increased significantly. Croaker and blueback herring were still the dominant species. Several additional species were captured; channel catfish (Ictalurus punctatus), banded 3.4.4-4

4 killifish (Fundulus diaphanus), and a larval goby. The goby has been te~tatively placed in the genus Gobinellus, which is a rare find in estuarine waters. We arc presently attempting to obtain a positive identification on the specimen. The remaining species were represented by juvenile and adult

. individuals.

Only one nighttime sample was collected in December due to high winds and rough water conditions in Cobham Bay.

Attempts were made through the first week of January to get this sample., but inclement weather prevailed.

Most of the fish captured in our samples.since September are not being entrained into the thermal plume. Except for croaker, which are in the early juvenile stages, practically all of the fish captured in the thermal plume were assumed large enough to negotiate the currents and avoid the plume if they so desired. Some of the postlarval croaker might possibly be entrained, but our data do not indicate large numbers of croakers in the plume.

Catches of fish are low and variability of catch high, making statistical analysis of the data impractical. Only nighttime samples have produced consistent data. Since these were only .. begun in November, data are insufficient for statistical analysis at this time.

A summary of the hydrographic data is shown in Table 3.

Data for the plume is taken at the end of tow 1 which is the most distant point from the discharge canal groin.

1 Mixing has usually occurred at this point. Therefore temperature and 3.4.4-5

5 salinity data do not indicate sampling directly in the 5° plume. Also, the heated effluent sometimes travels out from the groin and "dives", creating variability in the data profile taken in the plume.

3.4.4-6

6

- Table 1.

SPECIES 22 OCT 75 Species and number of ind i vid ua ls captured in Plume Study Survey (Stepped oblique tows)

Disch. Canal Tow #1 Tow #2 Tow #3 Tow #4 1022 Hrs. LT RT LT RT LT RT LT RT LT RT Alosa aestivalis 1 Gobisa:na bosci 1 23 OCT 75 2255 Hrs.

Micropogon undulatus 6 5 16 24 Gobisoma bosc i 1 Menidia beryllina 1 (STUDY NOT COMPLETED)

Anchoa mitchilli 1 3 Alosa aestivalis 8 1 Notropis hudsonius 1 19 NOV 75 0801 Hrs.

Anchoa mitchilli 1 19 NOV 75 2025 Hrs.

Micropogon undulatus 1 1 1 1 1 1 Alosa aestivalis 1 25 NOV 75 1222 Hrs.

NO CATCH 26 NOV 75.

0130 Hrs.

Micropogon undulatus 1 1 1 1 1 Alosa aestivalis 1 3 1 1 Gobinellus shufelti~': 1 Menidia beryllina 1 1 1 Ictalurus punctatus 1 Fundulus diaphanus 1 Anchoa mitchilli 1

• Tentative identification 3.4.4-7

7 Table 1 (continued)

SPECIES 4 DEC 75 Disch. Canal Tow #1 Tow #2 Tow #3 Tow #4 0841 Hrs. LT RT LT RT LT RT LT RT. LT RT Anchoa mitchilli 1 1 1 Micropogon undulatus 1 4 DEC 75 2100 Hrs.

Micropogon undulatus 3 1 2 3 I eta lurus pure ta tus 1 1 Alosa aestivalis 1 Anchoa mitchilli 1 9 DEC 75 1134 Hrs.

Anchoa mitchilli 1 1

3. 4. 4-8

8 Table 2. Species and calculated number of individuals per 100 cubic meters captured in Plume Study Survey (stepped oblique tows)

SPECIES 22 OCT 75 Disch. Canal Tow #1 Tow #2 Tow #3 Tow #4 10_22 Hrs. LT RT LT RT LT RT LT RT LT RT Alosa aes tiva lis 4 Gob'isoma bosci 1 23 OCT 75 2255 Hrs.

_Micropogon undula tus 26 24 29 44 Gobisoma bosci 5 Menidia beryllina 5 (STUDY NOT COMPLETED)

Anchoa mitchilli 2 6 Alosa aestivalis 14 2 Notropis hudsonius 2 19 NOV 75 0801 Hrs.

Anchoa mitchilli 2 19 NOV 75 2025 Hrs.

Micropogon undulatus 4 2 2 2 2 2 Alosa. aestivalis 2 25 NOV 75 1222 Hrs.

NO CATCH 2_6 NOV 75 0130 Hrs.

Micropogon undulatus 6 6 2 2 2 Alosa aestivalis 2 -- 7 4 2 Gobinellus shlif el ti~*: 2 Menidia beryllina 2 5 2 Ic ta lurus punc ta tus 2 Fundulus diaphanus 2

- Anchoa mitchilli 2

• Tentative identification

3. 4. 4-9

9 Table 2 (continued) e SPECIES 4 DEC 75 Disch. Canal Tow #1 Tow #2 Tov, #3 Tow #4 0841 Hrs. LT RT LT RT LT RT LT RT LT RT Anchoa rnitchilli 4 3 2 MicropogJ n undula tus 3 4 DEC 75 2100 Hrs, Micropogon undulatus 10 3 5 14 Ictalurus purctatus 3 3 Alosa aestivalis 3 Anchoa mitchilli 3

9. DEC 75 1134 Hrs.

Anchoa rnitchilli 3 2 I,

I!

3.4.4-10

e Table 3. Hydrographic data for plume entrainment stations (October through December 197 5)

• TEMPERATURE Date Discharge Canal Plume Ambient River Water Surface Midwater Bottom Surface Midwater Bottom Surface

• Midwater Bottom 22 Oct. 75 25.0 24.5 25.0 22.0 21. 0 2l.0 21. 0 + 21.0 23 Oct. 75 24.5 24.0 23.0 Study Not Completed*

19 Nov. 75 19.0 18.0 18.1 12.8 14.0 lS. 0 13.2 + 13. 5 19 Nov. 75 19.0 19,0 19.0 16:,0 17 .0 17 .s 14.0 + 14.0 25 Nov. 75 17. 0 17. 0 17 .o 15,5 16 00 11.5 + 11.5 26 Nov. 75 17. 0 15. 0 16~2 11.0* 11. O"'c 12. o~*c 11. 0 + 11. 5 4 Dec. 75 13 .o 13,0 13.0 10.5 10.8 11.0 9.5 + 9.0 4 Dec. 75 13.2 13. 0 14.0 10.0 11.0 11. 0 9.5 + 10.0 9 Dec. 75 16. 2 16.6 16.6 14.2 13 .5 9.8 + 10.0 DISSOLVED OXYGEN

.w 22 Oct 75 7.6 7.9 7.9 8,1 7.5 6,2 8,9 + 7,8

~

23 Oct 75 7.9 8,9 8.3 . Study Not Completed 7.7

~

I 19 Nov 75 7.8 7.0 7.8 6.7 7.4 6.6 7.6 +

~

~ 19 Nov 75 8.7 7,6 7.4 9.2 8.9 9.l 9.2 + 7,0 25 Nov 75 = = = = = = = = =

26 Nov 75 = = = = = = = = =

4 Dec 75 9.8 9.9 9.8 9,8 9.0 9.8 9,8 + 9,8 4 Dec 75 10.5 7.3 8.4 9.9 9.7 9,5 11.0 + 9.7 9 Dec 75 9.9 10.0 9.8 SALINITY 22 Oct 75 0.6 0.6 0.6 o.4 0.3 03 0 ._3 + o.3 23 Oct 75 0~5 0.5 0.5 0.3 Study" Not Completed 19 Nov 75 2.6 2.6 2.6 0.2 1.0 1.4 0.3 + 0.9 19 Nov 75 2.9 2.9 2.9 1.4 1. 7 1.8 0.5 + 0.6 25 Nov 75 4.0 4,0 4.0 *3. O 3,3 +

26 Nov 75 4~7 4.7 4.8 0

• 9ic 1. 2~*( 1. 8~'( 1.0 + 1.4 4 Dec 75 2.7 2.7 2.7 1.8 2.0 2.2 0.7 + 0~9 4 Dec 75 2.8 2.8 2.9 0.9 1.7 2.3 1. 0 + 1.6 ~

9 Dec 75 4.4 4.3 4.3 0

- Sample not taken

= Sample taken inc_orrectly *

+ Midwater samples not taken due to shallow water

• Boat blown inshore before hydro could be taken in plume

---.-- -**- .. -- **.--- - * ~. *-- --~ '°""',,...~.

' Appendix 1 CO A-11\J.01'\ v"\.r E'./1 J;T 11 oJ \ *1.R C}I N"l /1 7

Virginia Institute of lVlarinc Science WILLIAM .J. HA8G1S. JR Clo11ff::.tcr l\1i11t, \-'i,*.~i11it1 230ti2 Phone: (804) Fl42-2111 December 2, 1975 Mr. John C.* White Virginia Electric & Power Co.

Box 26666 Richmond, Virginia 23261

Dear John,

Our 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> plant entrainment station in October showed *~- ;

• that few fish larvae and eggs were captured during daylight hours while their occurrence in nighttime samples increased significantly. We decided to expand the plume entrainment stations to include a sample during the night to see if this

.situation continued. Enclosed are two tables compiled from samples taken during November. We believe these tables indicate

_the necessity of sampling the plume at night and the possible deletion of sampling during daylight hours.

The proposal addendum, which concerns the plume entrainment study, specified sampling during daylight hours. We would appreciate your views on continued night sampling and whether or not daylight sampling should be continued.

We will continue to sample during both the day and night until a decision has been reached.

Yours, J. V. Merriner Associate Marine Scientist

• JVM/das Enclosures 3.4.4-12

e Species and number of individuals captured in plume entrainment samples on November 19, 1975 Station Day Night Location Species Left Right

-Left Right*

Discharge Canal MicroEogon undulatus 1 Tow #1 (Plume) -- MicroEogon undulatus 1 1 Tow #2 (Plume) Micro2ogon undulatus 1 1 Tow #3 (Ambient) MicroEogon undulatus 1 Tow #4 (Ambient) 1 Anchoa mitchilli

.w Alosa aestivalis 1

..po

-I'-

I I-'

w c.,...-=,='l'~*c:***.............. -- *****=:uefm;, "'"'"'"~'!'.' . . etr*=-,**cvn:::~'."""'.'=;f.--:-,'~,--,,-,-=:~4-_**:~;!i~, *: :......

Species and number of individuals captured in plume entrainment samples on November 25-26, 1975 Day Night Station Location Species Left Right Left Right Discharge Canal Micropogon undulatus 1 1 Tow 111 (Plume) -- Menidia beryllina 1 Alosa aestivalis 1 3 Micropogon undulatus 1 Ictaiurus punctatus 1

• Gobineilus species 1

t>-

'd Tow 112 (Plume) Menidia beryllina 3 1 'tj Alosa aestivalis 2 (D

~

Fundulus diaphanus 1 0..

I-'*

~

Tow #3 (Ambient) Micropogon undulatus 1 I-'

Anchoa mitchi1Ii 1 ,,...._

()

0 Tow 1/4 (Ambient) Alosa aestivalis 1 ~

Micropogon undulatus 1 rt I-'*

~

r::(D 0..

• - Tentative I.D.

~*

-~,*~

,*f.... ..--: .. *:,**

• -~~--,---:.---:*~- . .__ * ~ .-. -* .. *~. . ' ;_i~ -~

3.6 FISH MORTALITIES

• . Fish impingement estimates for the low-level screens for the time period of January 5, 1975 to June 28, 1975 are reported. These estimates are

• based on two five-minute replicates taken daily Monday through Friday and

• extrapolated to reflect weekly values.

The low-level screens, which were specifically designed to reduce fish impingement mortality, stopped an estimated 3,482,664 fish from entering the high level.canal during this time period. Of this total, an estimated 3,264,888. individuals were returned to the river alive. The average 6 month survival was 93.8% with a range of 82% to 99%.

3.6-1

SURRY POWER STATION AVE. NO. CIRC. PUMPS 7 LOW LEVEL WEEKLY REPORT T&vl1' 11~1I.A 'IURE. MIN. -MAX. 24.4-26. 2 SALINITY .MIN. -MAX. 3 .4-.5. 8 Week Of June 29 Th rough July S, 197S Survival Percentage 99 %

VIMS rnni: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 039 White catfish I eta l urus catus 140-199,300-39~ 288 0 116 Brown bu 11 head lctalurus nebulosus 200-299 432 0 108 Golden shiner Notemigonus crysoleucas 110 Spottail shiner Notropis hudsonius 060 American eel Anquilla ros t rat a 051 Gizzard shad Dorosoma cepedianum 60-79 h,2 0 275 Threadfin shad Dorosoma petenense 80-99 288 0 026 Alewife Alosa pseudoha rengus 40-59 720 432 027 BI ueback herrina Alosa aestival is 037 Atlantic menhaden Brevoortia tyrannus 60-79 21,024 432 103 Bay anchovy Anchoa mi tchi 11 i 60-79 1~152 0 149 Tidewater silverside Menidia bery 11 i na 1so Atlantic si lverside Menidia menidia 100-119 144 0 135 Pumpkinseed Lepomis aibbosus 100-119 288 0 032 White perch Marone americana 033 Spot Leiostomus xanthurus 60-79 34.,272 0 005 Atlantic croaker Mi cropogon undulatus 80-99.,140-199 2.,880 0 151 Hog choker Trinectes maculatus 121 Banded killifish Fundulus diaphanus 60-79 432 0

. TOTAL 62.,352 864 3.6-2 - - ---

SURRY POWER STATION AVE. NO. CIRC. PUMPS 7 LOW LEVEL WEEKLY REPORT TEMPERATURE MIN.-MAX. : 25.6-28.1 SALINI1Y MIN.-MAX. : 5,4-6.8 Week 0°f July 6 Through July 12, 197.5 Survival Percentage 99 %

IMS r()n i; COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 200-299 576 0 039 White catfish I eta I urus catus 200-299 576 0 116 Brown bu 11 head I eta l urus nebulosus 108 Golden shiner Notemigonus crysoleucas 110 Spottail shiner Notropis hudson i us 80-99 576 0 060 American eel Anguilla rostrata 200-299 144 0 OSI Gizzard shad Dorosoma ceoedianum 400-499 288 0 275 Threadfin shad Dorosoma oetenense 100-119.120-139 432 0 026 Alewife Alosa pseudoharengus 40-59 . 432 0 027 Blueback herrinq Alosa aestival is 037 Atlantic menhaden Brevoortia tyrannus 60-79 4~464 144 103 Bay anchovy Anchoa mitchilli 60-79 864 0 149 Tidewater si lverside Menidia beryl 1 ina 60-79 288 0 150 Atlantic silverside Menidia menidia 100-119 288 0 135 Pumpkinseed Lepomis gibbosus 032 White perch Marone americana 60-79 144 0 033 Spot Leiostomus xanthurus 60-79 42,768 432 005 Atlantic croaker Micropogon undulatus 80-99 1J584 0 151 Hog choker Trinectes maculatus 121 Banded killifish Fundulus diaphanus 80-99 288 0 009 Bluefish Pomatomus saltatrix 100-119Jl20-139 432 0 136 Bluegill Lepomis macrochirus 140-199 288 0 TOTAL 54,432 576 3.6-3

SURRY POWER STATION AVE. NO. CIRC~ PUMPS . 8 .

LOW LEVEL WEEKLY REPORT TEMPERATURE MIN.-MAX. : 25.4-28.6 SALDHTY MIN. -MAX. . CJ.6-4.3 Week 'Of July 13 Through July 19, 1975 Survival Percentage 96 * %

VIMS roDE COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD.

040 . Channel catfish lctalurus punctatus 80-99,140-199 288 0 039 White catfish lctalurus catus 100-119 3,024 0 116 Brown bullhead lctalurus nebulosus 100-119 5.616 .0.

108 Go I.den shiner Notemigonus crysoleucas 120-139 720 0 11 O . Spottai 1 shiner Notropis hudsonius 80-99 2,592 144 060 American eel Anquilla ros t rat a 200-299 576 0 051 Gizzard shad Dorosoma ceoedianum 80-99 1.152 0 275 Threadfin shad Dorosoma petenense 60-79 1,584 720 026 Alewife Alosa pseudoharengus 60-79 2.,304 432 027 B1ueback herrinq Alosa aestival is 20-39 576 0 037 Atlantic menhaden Brevoortia tvrannus 60-19 63,216 3,168 103 Bay anchovy Anchoa mi tch i 11 i 60-79 1,872 288 149 Tidewater si lverside Menidia beryl Ii na 1i;o Atlantic si lverside Menidia menidia ho-c;9 1Jd1 0 135 Pumokinseed Leoomis qibbosus 120-139 288 0 032 White perch Marone americana 40-59 13,392 0I 033 Spot Leiostomus xanthurus 60-79 74.,448 2.,880 005 Atlantic croaker Micropogon undulatus 80-99 6,048 0 151 Hog choker Trinectes maculatus 052 Carp Cyprinus carpio 80-99 144 0 030 American shad Alosa sapidissima 60-79 144 0 121 Banded killifish Fundulus diaphanus 60-79 576 0 120 Sheepshead minnow Cyprinodon variegatus 20-39 141.i. 0 141.i. Naked goby Gobiosoma bosci 20-39 288 0 003 SWlllller flounder Paralichthys dentatus 60-79 288 0 324 Mar.sh killifish Fundulus confluentus 60-79 144 0 TOTAL 179,568 7.,632 3.6-4

SURRY POWER STATION AVS. NO. CIRC. PtmPs  :'. 7 LOW LEVEL WEEKLY REPORT T8MP~R.A TURE MIN. -MAX. : , 27 .5-30.1

.3ALDJI TY MIN. -:/J'i.AX. : .0 .1-0. 6 Week Of July 20 Through July 26, 1975 Survival Percent~~e 94  %

VIMS rnni:: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 200-299 2,304 288 039 White catfish lctalurus catus 100-119 1.008 0 116 Brown bullhead lctalurus nebulosus 100-119 7.920 432 108 Golden shiner Notemigonus crysoleucas 80-99 6,192 0 110 Spottail shiner Notropis hudsonius 80-99 7,488 144 060 American eel Anquilla ros t rat a 300-399 288 0 051 . Gizzard shad Dorosoma cepedianum 60-79 3.168 1.584 275 Threadfin shad Dorosoma petenense 60-79 6,048 432 026 Alewife Alosa pseudoharengus 60-79 6,192 1,296 027 Blueback herri nq Alosa aestival is 037 Atlantic menhaden Brevoortia tvrannus 60-79 7.920 1.152 103 Bay anchovy Anchoa mitchilli 60-79 1,728 h32 149 Tidewater si lverside Menidia beryl] ina lSO Atlantic si lverside Menidia menidia 135 Pumpkinseed Lepomis qibbosus 40-59,80-99 1.152 0 032 White perch Marone americana 40-59 14,832 0 033 Spot Leiostomus xanthurus 60-79 88,272 3,4.56 005 Atlantic croaker Micropogon undulatus 100-119 2,880 288 151 Hog choker Trinectes maculatus 052 Carp Cyprinus carpio 60-79 576 0 030 American shad Alosa sapidissima 60-79 144 0 l~l Banded killifish Fundulus diaphanus 60-79 288 0 274 Bluespotted sunfish Enneacanthus gloriosus 40-59.60-79 432 0 133 Flier Centra*rchus macropterus 140-199 144 0 l

TOTAL 158,976 9,.504 3.6-5

SURRY POWER STATION AVE. NO. CIRC. PUMPS 7 LOW LEVEL WEEKLY REPORT Tt.i:MPL~H.A TU1IB MIN .-MAX. 26.2-28 .8 SALINITY MIN. -MAX. 0. 7-2. 2 Week Of July 27 Through August 2, 1975 Survival Percentage 93 %

e VIMS r.nn i:: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD*

040 Channel catfish lctalurus punctatus 200-299 720 0 039 White catfish lctalurus catus 140-199 864 0 116 Brown bullhead I eta l urus nebulosus 100-119 720 432 108 Golden shiner Notemigonus crysoleucas 80-99 864 0 110 Spottai I shiner Notropis hudsonius 80-99 1, 72B 432 060 American eel Anqu i 11 a ros t rat a 200-299 720 0 051 Gizzard shad Dorosoma ceoedianum 80-99 1, 72B 864 275 Threadfin shad Dorosoma petenense 60-79 2,016 0 026 Alewife Alosa pseudoha rengus 60-79 24,768 2,016 027 Blueback herrinq Alosa aestival is 40-59 720 0 037 Atlantic menhaden Brevoortia tvrannus 60-79 6,336 288 I

103 Bay anchovy Anchoa mitchilli 60-79 1,728 0 I

149 Tidewater si lverside Menidia beryl l i na 150 Atlantic si lverside Menidia menidia l.iO-S9 0 288 135 Pumpkinseed Leoomis oibbosus 032 White perch Marone americana 60-79 3,888 0 033 Spot Leiostomus xanthurus 60-79 13,968 288 005 Atlantic croaker Micropogon undulatus 100-119 5,472 144 151 Hog choker Trinectes maculatus 030 American shad Alosa sapidissima 80-99 1,296 0 TOTAL 67,536 4,752 3.6-6

SURRY POWER STATION AV'i,. NO. CIRC. PUMPS : 7 LOW LEVEL WEEKLY REPORT TEMPERATURE HIN.-MAX. 26.7-29.9 SALINITY MIN.-MAX. : 3 .8-.5 .1 Week Of August 3 Through Au.gust 9, 1975 Survival Percentage 93  %

VIMS C:OD F COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALI VE DEAD 040 Channel catfish lctalurus punctatus 200-299 432 0 039 White catfish lctalurus catus 140-199. 200-299 .576 0 116 < Brown bullhead lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 80-99 144 0 110 Spottai 1 shiner Notropis hudsonius 80-99 288 0 060 American eel Anquilla ros t rat a 200-299 .576 0 051 Gizzard shad Dorosoma ceoedianum 120-139.100-399 .576 0 275 I Threadfin shad Dorosoma petenense 40-.59.140-199 432 0 026 '

Alewife Alosa pseudoharengus 60-79 3,600 0 027 Blueback herrina Alosa aestival is 017 Atlantic menhaden Brevoortia tyrannus 60-79 2,.592 288.

103  ; Bay anchovy Anchoa mi tch i 11 i 60-79 2,736 144 149 Tidewater silverside Menidia beryl Ii na l ;;o i Atlantic silverside Menidia menidia 135 Pumokinseed Leoomis qibbosus 032 White perch Marone americana 60-79 1,008 0 033 Spot Leiostomus xanthurus 80-99 7,488 864 005 Atlantic croaker Micropogon undulatus 100-119,120-139 1,008 288 151 Hog choker Trinectes maculatus 030 American shad Alosa sapidissima 60-79 1,296 0 042 Spanish mackerel Scomberomorus rnaculatus 40-59,140-199 288 288 00*9 Bluefish Pomatomus saltatrix 120-139 144 0 i44 Naked goby Gobiosoma bosci 20-39 576 0 TOTAL 23,760 1,872 3.6-7

SURRY POWER STATION AVE. NO. crn.c. PUMPS 1 LOW LEVEL WEEKLY REPORT mMP i..:H.A WRE MIN .-MAX. 27.0-28.5 SALINITY MIN.-MAX. 4.0-5.1 Week Of August 10 Through August 16, 1975 Survival Percentage 93 '%

VIMS rnni=. COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 140-199 720 0 039 White catfish Ieta l urus catus 120-139 1~008 0 116 Brown bullhead lctalurus nebulosus 200-299 288 144 108 Golden shiner Notemigonus crysoleucas 110 Spottai 1 shiner Notropis hudsonius 80-99 720 0 060 American eel Anquilla ros t rat a 200-299 576 0 051 Gizzard shad Dorosoma ceoedianum 80-99 1~584 288 275 Threadfin shad Dorosoma oetenense 80-99 1,440 0 026 Alewife Alosa pseudoharengus 60-79 7,056 432 027 Blueback herrinq Alosa aestival is 40-59 144 0 037 Atlantic menhaden Brevoortia tvrannus 120-139 4,464 720 103 Bay anchovy Anchoa mitchill i 60-79 3,312 720 149 Tidewater si lverside Menidia beryl l i na 1;;o Atlantic silverside Menidia menidia 135 Pumokinseed Leoomis gibbosus 032 White perch Marone americana 033 Spot Leiostomus xanthurus 60-79 9,504 288 005 Atlantic croaker Micropogon undulatus 100-119,140-199 1,152 0 151 Hog choker Trinectes maculatus 030 American shad Alosa sapidissima 60-79 1,728 0 042 Spanish mackerel Scomberomorus maculatus 80-99 288 0 009 Bluefish Pomatomus saltatrix 140-199 864 0 007 Weakfish Cynoscion regalis 200-299 288 0

(>'

35,136 2,592 TOTAL 3.6-8

SURRY POWER STATION AVE. NO. CI~C. PUMPS 7 LOW LEVEL WEEKLY REPORT TEMPERATURE MJN.-MAX. : *28.S-30.6 SALINITY MIN.-NAX. : 5.1-5.8 Week OfAugust l7 Through August 23 1 197S Survival Percentage 97 %

IMS rnni: COMMON NAME SCIENTIFIC NAME MODAL SIZE {mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 200-299 2.880 0 039 White catfish I eta l urus catus 140-199,200-299 432 0 116 Brown bullhead lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 110 Spottail shiner Notropis hudson i us 40-59,80-99 432 0 060 American eel Anguilla rostrata 051 Gizzard shad Dorosoma cepedianum 140-199 lhl, 0 275 Threadfin shad Dorosoma petenense 80-99 720 288 026 Alewife Alosa pseudoharengus 60-79 144 144 027 Blueback herrinq Alosa aestival is 40-59 288 0 037 Atlantic menhaden Brevoortia tyrannus 120-139 13.2h8 288 103 Bay anchovy Anchoa mitchilli 80-99 288 0 149 Tidewater si lverside Menidia beryl 1 i na ISO Atlantic silverside Menidia menidia 135 Pumokinseed Lepomis qibbosus 40-S9 720 0 032 White perch Merone americana 60-79 1,152 0 033 Spot Leiostomus xanthurus 60-79,80-99 22,608 0 005 Atlantic croaker Micropogon undulatus 140-199 1,296 144 151 Hog choker Trinectes maculatus 052 Carp Cyprinus carpio 140-199,400-499 288 0 030 American shad Alosa sapidissima 60-79,120-139 288 144 042 Spanish mackerel Scomberomorus maculatus 80-99 0 lhh 009 Bluefish Pomatomus saltatrix 140-199 720 288 45,648 1,440 TOTAL 3.6-9

. SURRY POWER STAT.I ON Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min-Mox: 27,7 - 30.1 Salinity Min - Max= 5,2 - 6.1 Week Of August 2h Th rough August JO, 1975 Survival Percentage= 97  %

VIMS f"'OOF COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus ounctatus 200-299 3,312 0 039 White catfish I eta l urus catus 140-199 720 .0 116 Brown bul ]head lctalurus nebulosus 60-79,80-99 288 0 108 Golden shiner Notemigonus crysoleucas 120-139 288 0 110 Spottai I shiner Notropis hudsonius 80-99 864 0 060 American eel Anquilla ros t rat a 051 Gizzard shad Dorosoma ceoedianum 140-199.300-399 720 0 275 Threadfin shad Dorosoma petenense 80-99 1,872 0 026 Alewife Alosa pseudoharengus 60-79 9,072 1,152 027 Blueback herrinq Alosa aestival is 40-59 0 288 037 Atlantic menhaden Brevoortia tyrannus 100-119,120-139 21,024 288 1.03 Bay anchovy Anchoa mitchi lli 60-79 4,176 0 Jlt9 Tidewater silverside Menidia bery 11 i na 60-79 288 0 150 Atlantic silverside Menidia menidia 135 Pumpkinseed Lepomis qibbosus 40-59 2,592 0 032 White perch Morone americana 60-79 1,296 0 033 Spot Leiostomus xanthurus 60-79 20,592 lh4 005 Atlantic croaker Mi cropogon undulatus 100-119 1,008 0 151 Hogchoker Trinectes maculatus 140-199 288 0 030 American shad Alosa sapidissirna 80..:.99 576 144 042 Spanish mackerel Scomberomorus maculatus 140-199.200-299 432 0 144 Naked goby Gobiosoma bosci 40-59 288 0 007 Weakfish Cynoscion regalis 60-79 0 144 re R - 9/75 TOTAL 69,696 2,160 3.6-10

SURRY POWER STATION Ave. No. Circ. Pumps: 7  !

I LOW LEVEL WEEKLY REPORT Temperature Min-Max: 25.6 - 26.3 Salinity Min - Max: -3.!.2_- 7, 7 Week Of August 31 Through September 6, 1~75 Survival Percentage: 98  %

IS rnni: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 200-299 6,624 0 039 White catfish lctalurus catus 120-139 1,584 0 116 Brown bullhead Ieta I urus nebulosus 200-299 432 0 108 Golden shiner Notemigonus crysoleucas 80-99,100-119 288 0 110 Spottai I shiner Notropis hudsonius 060 American eel Anouilla rostrata 051 Gizzard shad Dorosoma cepedianum 140-199 1,008 0 275 Threadfin shad Dorosoma petenense 80-99 3,600 144 026 Alewife Alosa pseudoharengus 60-79 7,632 1,008 027 BI ueback he rri no Alosa aestival is 40-59 1,152 0 0~7 Atlantic menhaden Brevoortia tyrannus 120-139 9,072 0 103 Bay anchovy Anchoa mitchi II i 40-59 5,616 0 149 Tidewater silverside Menidia beryl I ina h0-59 ll.i4 0 J 'iO At Iant i c s i I ve rs i de Menidia menidia 60-79 1,440 0 135 Pumokinseed Leoomis qibbosus 40-59 3,168 0 032 White perch Marone americana 60-79 1,296 0 033 Spot Leiostomus xanthurus 60-79 41,328 432 005 Atlantic croaker Micropogon undulatus 140-199 720 0 151 Hogchoker Trinectes maculatus 120 Sheepshead minnow Cyprinodon variegatus 60-79 432 0 042 Spanish mackerel Scomberomorus maculatus 140-199,200-299 576 0 136 Bluegill Lepomis macrochirus 40-59,60-79 288 0 144 Naked goby Gobiosoma bosci 40-59 1,008 0 R - 9/75 TOTAL 87,408 1,584

3. 6...:.11

SURRY POWER STAT I ON _ Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min- Max: 24.9 - 27.5 Salinity Min- Max: 2.0 - 4.1 Week Of September 7 VIMS rnni:

040 COMMON NAME Channel catfish Throug~ September 13, 197S SCIENTIFIC NAME lctalurus punctatus Survival Percentage:

MODAL SIZE (mm) 200-299 96 ALI VE 576 DEAD 0

039 White catfish lctalurus catus R0-99 1,152 0 116 Brown bullhead Ieta 1urus nebulas us 60-79 141+ 0 108 Golden shiner Notemigonus crysoleucas 100-119 144 0 11 O Spottai 1 shiner Notropis hudsonius 80-99 720 0 060 American eel Anquilla ros t rat a 0Sl Gizzard shad Dorosoma cepedianum 140-199 1,008 0 275 Threadfin shad Dorosoma petenense 80-99 4.320 0 026 Alewife Alosa pseudoharengus 60-79 9,072 432 027 Blueback herrina Alosa aestival is 037 Atlantic menhaden Brevoortia tyrannus 100-119 32,976 864 103 Bay anchovy Anchoa mitchilli 40-59,60-79 5,616 288 149 Tidewater silverside Menidia beryl 1 i na 60-79 288 0 150 Atlantic si lverside Menidia menidia 60-79 432 0 135 Pumpkinseed Lepomis gibbosus 40-59,60-79 2,016 288 032 White perch Marone americana 80-99 1,872 0 033 Spot Leiostomus xanthurus 60-79 34,848 1,440 005 Atlantic croaker Micropogon undulatus 120-139 2,160 0 151 Hog choker Trinectes maculatus 120-139 144 0 030 American shad Alosa sapidissima 80-99 432 288 144 Naked goby Gobiosorna bosci 40-59 576 0 204 Crevalle jack Caranx hippos 40-59 144 0 138 Black crappie Pomoxis nigromaculatus 140-199 144 0 R - 9/75 TOTAL 98,784 3,600 3.6-12

SURRY POWER STATION Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 21. 7 22.5 Salinity Min - Max: 3,9 4,8 Week Of September 14 VIMS r.nnc:

040 COMMON NAME Channel catfish Through September 20, 1975 SCIENTIFIC NAME lctalurus punctatus Survival Percentage:

MODAL SIZE (mm) 140-199 98 ALIVE 288 DEAD 0

039 White catfish I eta 1urus cat us 1)10-199 576 0 116 Brown bu 11 head I eta l urus nebulosus 108 Golden shiner Notemigonus crysoleucas 1iio-199 288 0 110 Spottai 1 shiner Notropis hudsonius 80-99 720 0 060 American eel Anguilla res L rat a 120-139~400-499 144 144 051 Gizzard shad Dorosoma ceoedianum 140-199 576 144 275 Threadfin shad Dorosoma petenense 80-99 5,616 144 026 Alewife Alosa pseudoharengus 60-79 5,328 144 027 BI ueback herrinq Alosa aestival is 40-59 720 0 037 Atlantic menhaden Brevoortia tyrannus. 120-139 40.752 432 103 Bay anchovy Anchoa mitchilli 60-79 8.,352 432 149 Tidewater silverside Menidia beryl I ina 150 Atlantic si lverside Menidia menidia 60-79 576 0 135 Pumpkinseed Leoomis qibbosus 40-59 720 0 032 White perch Merone americana 80-99 432 0 033 Spot Leiostomus xanthurus 80-99 11,664 288 005 Atlantic croaker Micropogon undulatus 120-139 1,008 0 151 Hog choker Trinectes maculatus 80-99,120-139 720 0 030 American shad Alosa sapidissima 60-79 1.,152 0 148 Rough silverside Membras martinica 40-59,80-99 432 0 204 Crevalle jack Caram: hippos 20-39 144 0 009 Bluefish Pomatomus saltatrix 200-299 864 0 144 Naked goby Gobiosoma bosci 20-39 3,024 0 re R - 9/ 75 TOTAL 84,096 1,728 3.6-13

SURRY POWER STATION Ave No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min- Max: 22 .6 25,5 Salinity Min - Max: 1,6 3,9

• Of Septern,'1J.r 21 Th rough Septem.,er 27, 1715 Survival Percentage: --"-9~8__ o/o VIMS rnnF COMMON NAME . SC I ENT I;: IC NAME MODAL SIZE (mm) AL I VE DEAD 040 Channel catfish lctalurus eunctatus ---** l).i0-199 1,296 0 039 116 White catfish BrCl\1-Jn bullhead i

lctaluru'., ca;.us ictalurus nebulosus -+- I 80-99 120-139,140-199 1,584 288 0

0 108 Golden shiner No tern i 901ws *~rysoleucas 110 060 051 Spottai 1 s*h i ne r American eel Gizzard shad Not rop is hud*,on i U'.'

An qui *1 1a _r;~*:* :*,Ha Doroscma ~ d i anum

---+-**  ;

200-299 l)~0-199 144 2,304 0

576 275 Threadfin shad Dorosoma 1-Jeti!nense 80-99 5,040 0 026 Alewife Alosa pse udo 11a ren gus .I l

60-79 3,744 288 027 B1ueback herrinq Alosa aestiv,ilis 40-59 720 0 017 Atlantic menhaden Brevoort i a tv ran nus 120-139 46,512 288 103 Bay anchovy Anchoa mi tch i 11 i 60-79 2,592 432 149 Tidewater si lverside Menidia bery 11 i na i 150 Atlantic si lverside Menidia men i ,:Ji a _l_ 60-79 288 0 135 Pumpkinseed Le porn is _J,1 i bbos us I

• • -;- ,'10-99, 100-119 2UIJ 0 032 White perch Mo rone ame r i c:ana 033 Spot Leiostomus x,inthurus 60-'/9 20,li48 576 005 Atlantic croaker Micropogon undulatus 140-199 1,872 0 151 Hog choker Trinectes macu]atus d0-99,100-119 576 0 030 American shad Alosa sapidissirna 60-79 576 0 148 Rough silverside Membras martinica 40-59 144 0 009 Bluefish Pornatomus saltatrix 300-399 144 0 T. 1.,152 0 144 Naked goby Gobiosorna bosci 20-39.,40-59

- J_

- --------+I J_

I I

I  !

• • 1I I

ll9,712 2.,160 R - 9/75 3.6-14 TOTAL

Ave. No. Gire. Pumps: 6 SURRY POWER STATION LOW LEVEL WEEKLY REPORT Temperature Min-Max: :u1.2 - 24.1 Salinity Min - Max: 0.1 - 0.2 Week Of September 28 Th rough October Li, 1Y75 Survival Percentage: 95  %

rnni: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 2(*0-299 432 0 039 White catfish lctalurus cat us 60-79,140-199 576 0 116 Brown bullhead lctalurus nebulosus lh0-199 144 0 108 Golden shiner Notemigonus crysoleucas 110 Spottai 1 shiner Notropis hudsonius no-99 4.,032 0 060 American eel Anguilla ros t rat a 200-25,9 144 0 051 Gizzard shad Dorosoma ceoedianum 140-199 1.152 288 275 Threadfin shad Dorosoma petenense 80-99 4.608 288 026 Alewife Alosa pseudoharengus 60-79 15,840 1.584 027 Blueback herrinq Alosa aestival is 40-59 1,440 144 037 Atlantic menhaden Brevoortia tyrannus 120-139 4)464 144 103 Bay anchovy Anchoa mitchilli 60-79 2.,448 288 149 Tidewater si lverside Menidia bery 11 i na 150 Atlantic silverside Menidia rrienidia 135 Pumpkinseed Lepomis qibbosus lh0-199 720 0 032 White perch Marone americana 80-99 2.,88b 0 033 Spot Leiostomus xanthurus 60-79 14.,256 288 005 Atlantic croaker Micropogon undulatus 120-139 3.,744 0 151 Hog choker Trinectes maculatus 120-139 1.,008 0 107 Silvery minnow Hybognathus nuchalis 80-99 576 0 0)0 American shad Alosa sapidissima 80-99 2.,304 144 122 Mwnmichog Fundulus heteroclitus 40-59 4.,176 0 121 Banded killifish Fundulus diaphanus 40-59 576 0 138 Black crappie Pomoxis nigromaculatus 140-199 144 0 144 Naked goby Gohiosoma bosci 20-39 1,152 0 003 Swnmer flounder Paralichthys dentatus 300-399

• 288 0

• i 67,104 3,168 R - 9/75 TOTAL 3 .6- 15 -

SURRY POWER STATION Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 19,1 - 20,7 Salinity Min - Max: o.o - 0.4

• Of October 5 Through October 11., 1975 Survival Percentage: 95  %

VIMS tnni:: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040

• Channe 1 catfish lctalurus punctatus 200-299 720 0 039 White catfish I eta l urus catus 60-79 5.904 0 116 Brown bu 11 head Ieta l urus nebulosus 108 Golden shiner Notemigonus crysoleucas 120-139 144 0 110 Spottai I shiner Notropis hudsonius 80-99 5,904 144 060 American eel Anguilla ros uata 200-299.300-399 288 0 051 Gizzard shad Dorosoma ceoedianum 140-199 2.304 0 275 Threadfin shad Dorosoma petenense 80-99 8.784 864 026 Alewife Alosa pseudoharengus 60-79 40.,608 5,328 027 BI ueback herrinq Alosa aestival is 40-59 31.968 1.728 037 Atlantic menhaden Brevoortia tyrannus 120-139 4,h64 0 103 Bay anchovy Anchoa mitchilli 60-79 6,624 432 149 Tidewater silverside Menidia bery 11 i na 60-79 1.296 0 150 Atlantic silverside Menidia menidia 60-79 1hu 0 135 Pumpkinseed Lepomis qibbosus 120-139 720 0 032 Wh i. te perch Morone americana 80-99 5,328 0 033 Spot Leiostomus xanthurus 60-79 61,056 1,008 005 Atlantic croaker Hi cropogon undulatus h0-59,120-139 3,02h 0 151 Hog choker Trinectes m&culatus h0-59 2,592 0 107 Silvery minnow Hybognathus nuchalis 80~99 576 0 030 American shad Alosa sapidj_ssima 80-99 1,584 lh4 121 Banded killifish F'undulus diaphanus 60-79 lli4 0 148 Rough silverside Hembras martinica 60-79 288 0 351 Gray snapper Lutjanus griseus 80-99 288 0

.,,j 184,752 9,648 R - 9/75 3.6-16 TOTAL

SURRY POWER STAT! ON Ave. No. Circ. Pumps: 2 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 12°2 - 21.8 Salinity Min-Max: 01LL - 2,5 Week Of October 12 Through Octoher 1 1, 1975 1 Survival Percentage: 2s O/o iS rnni:- COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish I eta 1urus punctatus 140-199 720 0 039 White catfish I eta 1urus catus 60-79 1.008 0 116 Brown bu 11 head I eta 1urus nebulas us 108 Golden shiner Notemigonus crysoleucas 30-99,140-199 288 0 11 O Spottail shiner Notropis hudsonius 80-99 3,l.i56 0 060 American eel Anouilla ros c rat a 300-399 288 0 051 Gizzard shad Dorosoma ceoedianum 120-139.140-199 432 288 275

• Threadf in shad Dorosoma petenense 80-99 8.928 144 026 Alewife Alosa pseudoharengus 60-79 4,608 144 027 B1ueback herrino Alosa aestival is 40-59 2,016 288 017 Atlantic menhaden Brevoortia tyrannus 120-139 25.488 288 103 Bay anchovy Anchoa mitchilli 60-79 1,440 0 149 Tidewater silver~ide Menidia beryl 1i na 150 Atlantic si lverside Menidia menidia 135 Pumokinseed Leoomis gibbosus 140-199 576 0 032 White perch Marone americana 80-99 2,016 0 033 Spot Leiostomus xanthurus 60-79 14,688 288 005 Atlantic croaker Micropogon undulatus 120-139 2,736 *O 151 Hogchoker , Trinectes maculatus 20-39 288 0 107 Silvery minnow Hybognathus nuchalis 100-119,120-139 576 0 030 American shad Alosa sapidissima 80-99 2,304 lh4 148 Rough silverside Membras martinica 80-99 288 0 3.51 Gray snapper Lutjanus griseus 60-79 864 0 204 Crevalle jack Caranx hippos 20-39 l).i4 0 R - 9/75 TOTAL 73,1.52 1,584 3.6-17

• SURRY POWER STATION Ave. No. Circ. Pumps=

LOW LEVEL WEEKLY REPORT Temperature Min- Max: 17.0 - 18.7 Salinity Min - Max: o,6 - 2.8 Week Of October 19 Through October~), 1975 Survival Percentage: 96  %

ii I

rnnF COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD I l

040 Channel catfish lctalurus punctatus l/i0-199 1,728 0 039 White catfish lctalurus catus 6U-79 4,032 0  !

116 Brown bu 11 head I eta l urus nebulosus l).1.0-1:,)9 2,016 0 108 Golden shiner Notemigonus cryso l eucas 110 Spottail shiner Notropis hudsonius  :'.O-Y9 720 0 060 American eel Anguilla ros t rat a 051 Gizzard shad Dorosoma ceoedianum 140-199 576 288 275 Threadfin shad Dorosoma petenense 80-99 7,632 0 026 Alewife Alosa pseudoha ren gus 60-79 8,928 576 027 B1ueback herrino Alosa aestival is 40-5;.; 18,864 1,728 037 Atlantic menhaden Brevoortia tyrannus 120-lJY 27,648 288 103 Bay anchovy Anchoa mitchilli 60-79 2,160 432 149 Tidewater silverside Menidia bery 11 i na 40-59 288 0 ISO Atlantic si lverside Menidia menidia 60-79 1.152 0 135 Pumpkinseed Lepomis qibbosus lh0-199 lld+ 0 032 White perch Marone americana 60-79 2,304 0 033 Spot Leiostomus xantburus 80-99 21,888 576 005 Atlantic croaker Micropogon undulatus )10-59 288 0 151 Hog choker Trinectes maculatus 030 American shad Alosa sapidis:,ima 80-99 3,600 144 148 Rough silverside Membras martinica 80-99 0 288 028 Hickory shad Alosa mediocris lh0-1~9 238 0 122 Mununichog Funrlul:1s h~'.,erocli t.us 60-7':,' J,RSB 0 120 Sheepshead minnow C,vririno;lon varieg;:1 tus h0-5Y l/i4 0 351 Gray snapper Lutjanus griseus 100-119 144 0 144 Naked goby Jobiosoma bosci /.i0-59 144 0 re I i

lOP,576 4,320 R - 9/75 3.6-18 TOTAL

SURRY POWER STATION Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min- Max: 15.J - 18.)1 Salinity Min - Max: 1.2 - 2.5 Week Of October 26 Through fovember l, 19'h Survival Percentage: 98  %

rnni: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALI VE DEAD 040 Channel catfish I eta l u rus pur1ctatus l~i0-199, 200-299 h.46h 0 039 White catfish I eta l urus catus 60-79 576 0 116 Brown bull head I eta l urus nebulosus 108 Golden shiner Notemigonus crysoleucas 120-139 288 0 110 Spottai l shiner Notropis hudsonius 80-99 B64 0 060 American eel Anquilla ros t rat a 051 Gizzard shad Dorosoma ceoedianum 140-199 720 0 275 Threadfin shad Dorosoma oetenense 80-99 5.904 0 026 Alewife Alosa pseudoha rengus 60-79 10,656 B64 027 Blueback herrinq Alosa aestival is l.i0-59 6,912 288 037 Atlantic menhaden Brevoortia tyrannus 120-139 61.it512 0 103 Bay anchovy Anchoa mitchi 11 i 60-79 9,792 720 !

149 Tidewater si lverside Menidia beryl l ina 60-79 432 0 150 Atlantic si lverside Menidia men i di a 60-79 144 0 135 Pumpkinseed Lepomis qibbosus 032 White perch Mo rone ame r i can a 80-99 1,008 0 033 Spot Leiostomus xanthurus 80-99 5,184 0 005 Atlantic croaker Mi cropogon undulatus 151 Hogchoker Trinectes maculatus 40-59 288 0 030 American shad Alosa sapidi.ssima 80-99 1,728 0 122 Mumrnichog Fundulus heteroclitus 60-79 5,328 0 204 Crevalle jack Caranx: hi:)pos 100-119,140-199 864 0

• 'j' 119,664 1,872 R - 9/75 3.6-19 TOTAL

SURRY POWER STATION Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 15.8 - 16 .. 7 Salinity Min - Max: 1.8 - 2.4 Week Of November 2

• Through November 8, 1975 Survival Percentage: 98 %

,S rnni; COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 140-199 1,008 0 039 White catfish I eta l urus catus 80-99 2,448 0 116 Brown bullhead lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 110 Spottail shiner Notropis hudsonius 80-99 432 0 060 American eel Anquilla ros t: rat a 200-299 144 0 051 Gizzard shad Dorosoma cepedianum 140-179 4.464 0 275 Threadfin shad Dorosoma petcnense 80-99 13,824 288 026 Alewife Alosa pseudoltarengus 60-79 37,872 2,016 027 B1ueback herrina Alosa aestival is 40-59 53,424 576 037 Atlantic menhaden Brevoortia tyrannus 120-139 47,376 288 103 Bay anchovy Anchoa mitchilli 60-79 6,624 0 149 Tidewater silverside Menidia bery 11 i na 40-59 720 0 150 Atlantic si lverside Menidia menidia 135 Pumokinseed Leoomis qibbosus 60-79 1.008 0 032 White perch Marone americana 80-99 2,160 0 033 Spot Leiostomus xanthurus B0-99 15,408 864 005 Atlantic croaker Micropogon undulatus 120-139 864 0 151 Hog choker Trinectes maculatus 107 Silvery minnow Hybognatus nuchalis 100-119 144 0 030 American shad Alosa sapidissima 80-99 1,008 288 122 Mwnmichog Fundulus heteroclitus 60-79 5,904 0 121 Banded killfish Fundulus diaphanus 60-79 144 0 120 Sheenshead minnow Cvnrinodon variegatus 40-59 576 0 11.t8 Rough silverside Membras martinica 60-79 1,296 144 1~1 r,.,..~v c:,,.,,:inno,.. Lutianus ~riseus 60-79 288 0 144 Naked gob:v Gobiosoma bosci 40-59 288 0 R - 9/75 TOTAL 197,424 4,464 3.6-20

SURRY POWER STATION . Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min - Max: 14.0-18.3 Salinity Min - Max: ---'-2.;..;;*..;c.2- 3* 9 Week Of November 9 Th rough November 15, 1975 Survival Percentage: 98  %

V IMS r.nni: COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) AL I VE DEAD 040 Channel catfish lctalurus punctatus 200-299 576 0 039 White catfish I eta l urus catus 80-99 576 0 116 Brown bull head lctalurus nebulosus 108 . Golden shiner Notemigonus crysoleucas 80-99 288 0 110 Spottai 1 shiner Notropis hudsonius 80-99 288 288 060 American eel Anquilla ros l rat a 051 Gizzard shad Dorosoma ceoedianum 140-199 l,h40 0 275 Threadfin shad Dorosoma oetenense 80-99 4,032 0 026 Alewife Alosa pseudoharengus 60-79 14,688 720 027 *B 1ueback herrinq Alosa aestival is 40-59 14,256 1,152 037 Atlantic menhaden Brevoortia tyrannus 120-139 I 100,944 432 103 Bay anchovy Anchoa mitchi ll i 60-79 16,272 1,008 149 Tidewater silverside Menidia bery 11 i na 60-79 144 0 150 Atlantic si lverside Menidia menidia 80-99 144 0 135 Pumokinseed Leoomis gibbosus 60-79 432 0 032 White perch Marone americana 80-99 432 0 033 Spot Leiostomus xanthurus 80-99 7,200 0 005 At 1antic croaker Micropogon undulatus 120-139 720 0 I 151 Hog choker Trinectes maculatus 120-139 1,008 0 100-119 288 0 '

030 American shad Alosa sapidissima 163,278 3,600 R - 9/75 3.6-21 TOTAL

SURRY POWER STATION Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 12.7 - 1).8 Salinity Min - Max: 2.5 - 3.6 Week Of November 16 Through Novemher 22, 1975 Survival Percentage: 98  %

e VIMS.

rnni= COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish I eta 1u rus punctatus 140-199,200-299 288 0 039 White catfish lctalurus catus 80-99 2,736 0 116 Brown bullhead lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 110 Spottai I shiner Notropis hudsonius 80-99 864 0 060 American eel Anquilla rostrata 051 Gizzard shad Dorosoma cepedianum 140-199 1~584 0 275 Threadfin shad Dorosoma petenense 80-99 9.072 0 026 Alewife Alosa pseudoharengus 60-79 9,216 432 027 BI ueback herrinq Alosa aestival is 40-59 14,832 432 037 Atlantic menhaden Brevoortia tyrannus 120-139 13,248 288

/

103 Bay anchovy Anchoa mitchill i 60-79 4,896 432 149 Tidewater silverside Menidia beryl I ina I i;o Atlantic silverside Menidia menidia 135 Pumokinseed Leoomis gibbosus 60-79 2,592 0 I i

032 White oe rch Marone americana 80-99 3,312 288 033 Spot Leiostomus xanthurus 60-79 10.,944 0 005 Atlantic croaker Micropogon undulatus 140-199 1,296 0 151 Hogchoker Trinectes maculatus 40-59,100-119 43,2 0 107 Silvery minnow Hybognathus nuchalis 80-99 288 0 122 Mummichog Fundulus heteroclitus 40-59 1,584 0 121 Banded killifish Fundulus rl.iaphanus 60-79 144 0 030 American shad Alosa sapidissima 80-99 1,296 0 I

I R - 9/75 TOTAL 78,624 1.,872 3.6-22

SURRY POWE.R STATION Ave. No. Circ. Pumps: 5 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 10.2 - 11.4 Salinity Min - Max: 3.8 - 4".6 Week Of November 23 Through November 29, 1975 Survival Percentage: 94 O/o eVIMS rnru:- COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 1)10-199 720 0 039 White catfish I eta 1urus catus 80-99 1,584 0 116 Brown bu 11 head lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 100-119 288 0 110 Spottai I shiner Notropis hudsonius 80-99 576 0 060 American eel Anguilla ros 1.: rat a 200-299 288 0 051 Gizzard shad Dorosoma ceoedianum 120-139 1,)-1-40 0 275 Threadfin shad Dorosoma oetenense 80-99 1,584 0 026 Alewife Alosa pseudoharengus 60-79 5,184 576 027 B1ueback herrinQ Alosa aestival is 40-59 21,888 2,592 037 Atlantic menhaden Brevoortia tyrannus 120-139 4,032 0 103 Bay anchovy Anchoa mitchilli 40-59 576 288 149 Tidewater si ]versicle Menidia beryllina 60-79 576 0 150 Atlantic si lverside Menidia menidia 135 Pumokinseed Lepomis Qibbosus 60-79 2,592 0 032 White perch Marone americana 80-99,200-299 576 0 033 Spot Leiostomus xanthurus 60-79 10.,800 -288 005 Atlantic croaker Micropogon undulatus 40-59 576 0 151 Hog choker Trinectes maculatus 120-139 864 0 030 American shad Alosa sapidissima 80-99 1,296 288 122 lfammichog Fundulus heteroclitus 60-79 2,736 0 120 Sheepshead minnow Cyprinodon variegatus 40-59 144 0 144 Naked goby Gobiosorna bosci 20-39 576 0 R - 9/75 TOTAL 58,896 4,032 3.6-23

SURRY POWER STAT I ON Ave. No. Circ. Pumps: 6 LOW LEVEL WEEKLY REPORT Temperature Min- Max: ---'-7*~9_. - 11.8 Salinity Min-Max: 3.1 - J.9.

. k Of November 30 Through December 6, 1975 Survival Percentage: 96  %

VIMS roni:- COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE *DEAD I

040 Channel catfish lctalurus punctatus 140-199 432 0 I

039 White catfish lctalurus catus 80-99 720 0 116 Brown bullhead lctalurus nebulosus 100-119 864 0 108 Golden shiner Notemigonus crysoleucas 100-119 144 0 11 O Spottai I shiner Notropis hudsonius 80-99 1.,296 0 060 American eel Anguilla ros t rat a 300-399.,500+ 1.,008 0 051 Gizzard shad Dorosoma ceoedianum 140-199 1.,152 0 275 Threadfin shad Dorosoma oetenense 80-99 8,064 288 026 Alewife Alosa pseudoharengus 60-79 12.,096 0 027 Blueback herrinq* Alosa aestival is 40-59 31,824 3,312 037 Atlantic menhaden Brevoortia tyrannus 120-139 8.,064 0 103 Bay anchovy Anchoa mitchilli 80-99 1,728 288 149 Tidewater silverside Menidia beryl Ii na 150 Atlantic silverside Menidia menidia 60-79)80-99 576 0 135 Pumpkinseed Leoomis qibbosus 60-79 1~ 728 0 032 White perch Marone americana 80-99 5,040 0 033 Spot Leiostomus xanthurus 60-79,80-99 22,896 144 005 Atlantic croaker Micropogon undulatus 120-139 2.,880 288 151 Hog choker Trinectes maculatus 120-139 864 0 107 Silvery minnow Hybognathus nuchalis 80-99 432 0 030 American shad Alosa sapidissima 80-99 2.,448 144 231 Striped mullet Mugil cephalus 200-299 288 0 144 Naked goby Gobiosoma bosci 20-39 144 0 R - 9/75 TOTAL 104,688 4,464 3.6-24

SURRY POWER STATION Ave. No. Circ. Pumps: 6 LOW LEVEL WEEKLY REPORT Temperature Min-Max: 7.9 - 8.9 Salinity Min - Max: J.6 -. 5.2 Week Of December 7 VIMS rnnF 040 COMMON NAME Channel catfish Through December 13, 1975 SCIENTIFIC NAME lctalurus punctatus Survival Percentage:

MODAL SIZE (mm) 88 ALIVE DEAD 039 White catfish I eta 1urus catus 116 Brown bu 11 head Ieta 1urus nebulosus 108 Golden shiner Notemigonus crysoleucas 80-99 *432 0 110 Spot ta i I shiner Notropi s hudsonius 80-99,100-119 432 0 060 American eel Anouilla rost:rata 140-199,200-299 432 0 OSI Gizzard shad Dorosoma cepedianum 140-l;;i9~300-399 864 0 275 Th readf in shad

• Dorosoma petenense 026 Alewife Alosa pseudoharengus 60-79,80-99 432 288 027 BI ueback herrinq Alosa aestival is 40-59 6,192 1,008 037 Atlantic menhaden Brevoortia tyrannus 120-139 576 0 103 Bay anchovy Anchoa mitchilli 40-59 2,160 288 149 Tidewater si lverside Menidia beryl I ina 150 Atlantic silverside Menidia menidia 60-79 864 0 135 Pumpkinseed Lepomis oibbosus 60-79,80-99 288 144 032 White perch Marone americana 60-79 720 0 033 Spot Leiostomus xanthurus 60-79 4,608 720 005 Atlantic croaker Micropogon undulatus 60-79 288 0 151 Hog choker Trinectes maculatus 052 Carp Cyprinus carpio 120-139 288 0 R - 9/75 TOTAL 18,576 2,448 3.6-25 ~

SURRY POWER STATION Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min-Max: _---.:...7~.l~- 10.a Salinity Min-Max: 2.5 - 5,2

~k Of December 14 Through December 20, 1975 Survival Percentage: 99  %

VIMS rnnF COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALI VE DEAD 040 Channel catfish lctalurus punctatus 140-lS/9 144 0 039 White catfish I eta 1urus catus 120-139 288 0 116 Brown bullhead Ieta 1urus nebulosus 80-99 1.,008 0 108 Golden shiner Notemigonus crysoleucas 80-99 576 0 11 O Spottail shiner Notropis hudsonius 80-99 2.,160 0 060 American eel Anquilla ros t rat a 200-299§400-499 1§152 0 051 Gizzard shad Dorosoma ceoedianum 140-199 8§352 0 275 Threadfin shad Dorosoma petenense 80-99 864 0 026 Alewife Alosa pseudoharengus 60-79 4.,320 0 027 BI ueback he rri nq Alosa aestival is 40-59 50.,832 864 O':l.7 Atlantic menhaden Brevoortia tyrannus 120-139 11.,088 0 103 Bay anchovy Anchoa mitchilli 40-59 8.,352 288 149 Tidewater silverside Menidia beryl 1 i na 60-79 144 288 l 'iO Atlantic si lverside Menidia menidia 80-99 432 0 135 Pumokinseed Leoomis gibbosus 032 White perch Morone americana 80-99 15,408 0 033 Spot Leiostomus xanthurus 80-99 28.,656 432 005 Atlantic croaker Micropogon undulatus 40-S9 2.,880 0 151 Hog choker Trinectes maculatus 100-119,120-139 288 0 107 Silvery minnow Hybognathus nuchalis 100-119 2.,448 0 030 American shad Alosa sapidissima 80-99 4§464 0 231 Striped mullet Mugil cephalus 140-199 288 0 R - 9/75 TOTAL 144.,144 1,872 3.6-26

SURRY POWER STATION Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min-Max: -~4..;..:.3:;...- 5.5 Salinity Min - Max: 3 *8 - 6.o

~k Of December 21 Through December 27, 1975 Survival Percentage: _....:,9.:a.4_ 0/o VIM:>

rnni:- COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus l)i0-199 288 0 039 White catfish I eta l urus catus 80-99 288 288 116 Brown bu 11 head lctalurus nebulosus 108 Golden shiner Notemigonus crysoleucas 110 Spottai 1 shiner Notropis hudson i us 80-99 576 0 060 American eel Anqui 11 a rostrata 300-399 432 0 051 Gizzard shad Dorosoma ceoedianum 140-199 4~032 0 275 Threadfin shad Dorosoma petenense 60-79 2,160 0 026 Alewife Alosa pseudoharengus 60-79 2,304 0 027 Blueback herrinq Alosa aestival is 40-59 16,416 1,728 017 .Atlantic menhaden Brevoortia tyrannus 100-119 1,296 0 103 Bay anchovy Anchoa mitchilli 149 Tidewater silverside Menidia beryllina 60-79 0 720 l 'iO Atlantic si lverside Menidia menidia 80-99 3.02L. J,~2 135 Pumokinseed Leoomis glbbosus 60-79 288 0 032 White perch Marone americana 80-99 9,504 0 033 Spot Leiostomus xanthurus 80-99 4,464 0 005 Atlantic croaker Micropogon undulatus 40-59 4,032 0 151 Hogchoker Trinectes maculatus 107 Silvery minnow Hybognathus nuchalis 100-119 288 0 122 Mummichog Fundulus heteroclitus 40-59 288 0 R - 9/75 TOTAL 49,680 3,168 3.6-27 ~

SURRY POWER STATION Ave. No. Circ. Pumps: 7 LOW LEVEL WEEKLY REPORT Temperature Min- Max: ---'-4"""'.5'"- - 7 .6 Salinity Min-Max: 2.2 - 3.9 Week Of Dec8'nber 28, 1975Through January 3, 1976 Survival Percentage: 91  %

IMS rnnc COMMON NAME SCIENTIFIC NAME MODAL SIZE (mm) ALIVE DEAD 040 Channel catfish lctalurus punctatus 140-199,200-299 576 0 039 White catfish lctalurus catus 40-59 288 0 116 Brown bu 11 head Ieta 1urus nebulosus 40-59 0 288 108 Golden shiner Notemigonus crysoleucas 80-99 288 0 110 Spot ta i I shiner Notropis hudsonius 80-99 288 0 060 American eel Anquilla ros t rat a 200-299 1,152 0 051 Gizzard shad Dorosoma ceoedianum 140-199 3,600 0 275 Threadfin shad Dorosoma petenense 60-79 3,600 576 026 Alewife Alosa pseudoharengus 60-79 1,140 0 027 BI ueback herrinq Alosa aestival is 40-59 13.536 2.592 037 Atlantic menhaden Brevoortia tvrannus 80-99,100-119 1,296 0 103

• Bay anchovy Anchoa mitchill i 40-59 288 0 149 Tidewater silverside Menidia beryllina I SO Atlantic si lverside Menidia menidia 80-99 1c;.120 2.160 135 Pumi:>kinseed Lepomis qibbosus 032 White perch Merone americana 80-99 2,304 0 033 Spot Leiostomus xanthurus 60-79,80-99 15,l.i.08 0 005 Atlantic croaker Micropogon undulatus 60-79 2,592 288 151 Hog choker Trinectes maculatus 101 Longnose gar Lepisosteus osseus J00-39St 144 0 R - 9/75 TOTAL 61,920 5,904 3.6-28

Appendix 3~0 VEPCO Surry Power Plant Study River Biota and Phytoplankton Entrainment Sections Progress Report January 1976 by R. Jordan R. Carpenter C. Becker M. Ho Virginia Institute of Marine Science Gloucester Point, Virginia e

3.0.A-1

Introduction This report presents in tabular form the biological data collected from July through December 1975 in the river and phytoplankton entrainment portions of the VEPCO Surry Power Plant Study. In addition, certain data from entrainment studies and from special river studies conducted prior to July 1975, but which were not available for presentation in the July progress report, are included in this report.

Methods Station Locations Table 1 and Figure 1 show the locations of the phytoplankton and zooplankton sampling stations used in the river study. The first twelve stations listed in Table 1 were sampled each month during the study. The last six stations were used only during the zooplankton sampling run conducted on August 21. The benthos and fouling plate stations are shown in Table 2 and Figure 2.

Sampling and Sample Analysis Methods For detailed descriptions of these methods, refer to the July progress ~eport.

Sampling Design The sampling dates and biological parameters sampled in the second half of 1975 are shown in Table 3. The monthly river and entrainment sampling runs have followed the same procedures employed during the first half of the 1975 study. Diel plankton distribution surveys at station CBC were performed on July 22-23 and October 22-23. Vertical plankton 3.0.A-2 distribution surveys at all stations were conducted on July 17 and November 3. Phytoplankton entrainment sampling runs will continue through March 1976 to provide data for a full year period.

Results and Discussion Phytoplankton River Study Phytoplankton cell counts (Table 4) at all stations declined approximately one order of magnitude from mid-sununer to mid-winter.

Counts for the discharge samples were low relative to counts for the other stations in the summer months.

Flagellates of the cryptophyte genus Chroomonas were abundant at most stations during the summer and fall months (Table 5). The chained centric diatom Skeletonema costatum was a dominant member of the summer community, but was replaced by Helosira sp. in the fall.

The chlorophyll~ and primary productivity results appear in Tables 6 and 7. The magnitudes of these parameters declined seasonally in a pattern similar to that exhibited by total cell counts. A discussion of d{fferences among stations will be deferred until the final report, when results of statistical analyses of these data and of the data from the special river surveys will be available.

Zooplankton River Study Tables 8-13 present the river zooplankton data for the period July - December, 1975. The influence of salinity gradients on the spatial distribution of zooplankton is evident in the July samples (Table 8), which showed rotifers and cladocerans, including Bosmina sp.,

3.0.A-3

present at the low salinity stations while copepod nauplii and Acartia adults were most abundant at the high salinity stations. The tide was ebbing <luring the sampling run, and the distribution of Acartia sp.

followed the path of power plant cooling water from the vicinity of the plant intake to the downstream end of the discharge plume.

In the August sampling run (Table 9), six extra stations were added to provide more comparisons among stations within and outside the plume. Samples from one of these stations (HPW 1. 5), located on the

. outer edge of the plume, showed reduced numbers of most species and species groups, relative to the numbers found elsewhere on this date.

Generally, however, stations within the plume showed greater zooplankton abundance than did stations outside the plume. An expanded presentation of these data will appear in the final report.

The abundance of copepod nauplii declined sharply from August to September, and was lowest in the December samples. Very few Acartia adults were observed after September, while rotifers and polychaete larvae became more abundant.

Benthos The benthos data are presented in Tables 14-16. Rangia cuneata was most numerous at stations 2, 4, 6, 8, 11 and 16, and its abundance was relatively constant among the three sampling runs. Hydrobia sp.

was most abundant in July, while only one individual was found in the September 30 samples. Scolecolepides viridis and Nereis succinea were the most numerous polychaetes collected. Leptochei~us plumulosus, 3.0.A-4 Lepidactylus dytiscus, and Corophium lacustre accounted for the majority of the amphipods observed.

Fouling Plates The data from the fouling plate analyses for July-December*, 1975 appear in Tables 17-19. The densest colonization by barnacles occurred on the plates recovered in October, while no barnacles colonized the plates introduced at that time. The densities of bivalves and amphipods at a given station varied little between the August and October plates, then declined to almost zero on the December plates. Examination of periphyton samples from the fouling plate stations showed the presence of species of the pennate diatom Nitzschia and of the filamentous bluegreen genera Oscillatoria and Lyngbya at all_stations on all three sampling dates.

Phytoplankton Entrainment The data from all the phytoplankton entrainment runs conducted*

to date are presented in Tables 20-29. Cell counts are to be obtained for all the April samples, while for subsequent runs composite samples are being processed. During sampling, two vertical series of three samples each are obtained. Compositing of these groups of three yields two samples per station per sampling time, and a total of 16 samples per run. Samples through the August run have been processed. In only the July and August data are there strong indications of reductions in cell numbers in cooling water passing through the power plant. Further discussion of these results will appear in the final report, when the 3.0.A-5 data for all months will be complete.

Vertical and Diel Distribution Studies Three of each of these runs were performed, yielding sets of chlorophyll~, phytoplankton, and zooplankton samples. Tables 30-35 present the hydrographic, chlorophyll~, and phytoplankton cell count data available at this time. The remaining phytoplankton samples and the zooplankton samples are in progress.

3.0.A-6

TABLE 1 Plankton Sampling Station Locations Station Depth (m) Location DWS 2 Adjacent to tower (QK FI Lt "A")

Intake 1 Outside intake forebay - zooplankton sampling 8 Within intake forebay - phytopla~kton sampling HPE 1 5 Adjacent to black & white buoy "J29" HPE 2 4 Between black & white buoys "J29 11 and "J35" HPS 5 Adjacent to tower (QK FI Lt 11 C")

HPN 2 Between tower (QK FI Lt "B") and north bank of river HPW 1 1 Off west shore of Hog Point, midway between HPS and discharge HPW 2 3 Tower (QK FI Lt "E")

Discharge 3 Outside discharge canal mouth - zooplankton sampling 2.5 In discharge canal mouth - phytoplankton sampling CBE 1 Off west shore of Gravel Neck, south of discharge CBC 3 Midway between discharge and range markers near Cobham Wharf JI 8 Tower (QK FI Lt "G")

CBS 1(8-21) *3 Midway between tower (QK FI Lt "F") and shore CBS 2(8-21) 4 Adjacent to tower (QK FI Lt "F")

CBS 3(8-21) 3.5 Offshore from tower (QK FI Lt "F"), at a dis1:ance similar to that between CBS 1 and CBS 2 HPW 1.5 (8-21) 4 Midway between HPW 1 and HPW 2 HPM (8-21) 5.5 Midway between HPS and black and white buoy J28 J28 (8-21) 7 Adjacent to black and white buoy J28 3.0.A-7

0 J28HPN 0

.* RPM HP.S HPE 2 HPW 1 00 0 JI CBS 3 HPE 1

• 1

-CBC 0 CBE 0 INTAKE 0 1 2 naut. mi.

Figure 1. Plankton Sampling Stations

TABLE 2 Benthos and Fouling Plate Station Locations Station Depth Location (cm) 1 1. 5 Off tower (QK Fl 38 ft.) near Cobham Wharf 2 2.5 Cobham Bay, off Chestnut Bluffs 3 .1 Cobham Bay, between mouths of College Run and Lower Chippokes Creek 4 3 Center of Cobham Bay 5 3 Tower (QK Fl Lt "E")

6 1 In Thorofare, off marker tower R 11 4 11 7 1 Cobham Bay, off Gravel Neck 8 4 Tower (QK Fl Lt 11 F11 )

9 1 West of Hog Point 10 4 Between station 9 and black buoy "45" 11 5 Tower (QK Fl Lt "C")

12 *5 Off mouth of College Creek 13 1 East of Hog Point, on line with black and white buoy 11 J29 11 14 6 Black and white buoy "J35 11 15 1 Off power plant intake 16 2 Tower (QK Fl Lt II All)

DWS 2 Tower (QK Fl Lt II All)

CBN 2.5 Tower (QK Fl Lt 11D11)

CBS 3 Tower (QK Fl Lt "F11) 3.0.A-9

e I

014 0

0 1 2 naut. mi.

Figure 2. Benthos and fouling plate stati.ons

.TABLE 3 Summary of Biological Sampling Effort: Sampling Dates, Station Sampled, and Types of Samples Taken (Ph= Phytoplankton,

. Pr= Productivity, C =Chlorophyll~' Z = Zooplankton, B = Benthos, F = Fouling Organisms).

Date (1975)

River Plankton 7-10 7-17 7-22, 8-12 8-21 9-8 9-26 Stations 7-23 DWS Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z Intake Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z HPE 1 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z HPE 2 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z w RPS Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z 0 HPN Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z

i> HPW2 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z

,_.I HPWl Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z Discharge Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z CBE Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z CBC Ph, Pr, C Z, Ph, C z, Ph, C Ph, Pr, C z Ph, Pr, C z JI Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z River Benthos Stations 7-9 8-7 1 B B 2 B B 3 B B 4 B B 5 B B 6 B B 7 B B 8 B B 9 B B 10 B B 11 B B 12 B B 13 B B

Table 3 River Benthos Stations 7-9 8-7 14 B B 15 B B 16 B B Fouling Plate Stations 8-7 DWS F CBN F CBS F Phytoplankton Entrainment 7-15 8-18 9-17 Stations 7-16 8-19 9-18 Intake Ph, C Ph, C Ph, C Discharge Ph, C Ph, C Ph, C

.D>

0

......I N

Table 3 River Plankton 10-22, Stations 10-7 10-23 11-3 11-5 11-18 12-2 12-29 DWS Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z Intake Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z HPE 1 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z HPE 2 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z RPS Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z HPN Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z HPW 2 Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z HPW 1 Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z Discharge Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z CBE Ph, Pr, C z, Ph, C Ph, Pr, C z Ph, Pr, C z CBC Ph, Pr, C Z, Ph, C z, Ph, C Ph, Pr, C z Ph, Pr, C z JI Ph, Pr, C Z, Ph, C Ph, Pr, C z Ph, Pr, C z

.w 0

River Benthos Stations 9-30

i>

I w 1 B 2 B 3 B 4 B 5 B 6 B 7 B 8 B 9 B 10 B 11 B 12 B 13 B 14 B 15 B 16 B

Table 3 -4~

Fouling Plate Stations 9-30 12-29 DWS F F CBN F F CBS F F Phytoplankton Entrainment 10-16 11-19 12-17 Stations 10-17 11-20 12-18 Intake Ph, C Ph, C Ph, C Discharge Ph, C Ph, C Ph, C

.w L ____ - - -

TABLE 4 James River Phytoplankton Cell Count.s, July - December 1975 (Total cells per ml, surface samples, two samples per station)

Station July 10 Aug. 12 Sept. 8 Oct. 7 Nov. 5 Dec. 2 DWS 2250 3550 llOO 1450 1950 1950 llOO ll50 700 1250 350 400 Intake 2450 2050 .* 1250 1350 1650 1700 2300 1650 650 950 550 400 HPE 1 3200 3900 1550 900 1550 2650 1600 1600 1100 950 500 300 HPE 2 1850 1800 650 750 2550 2850 ll50 llOO 850 700 350 300 HPS 1650 1550 650 600 750 950 1150 1300 850 800 300 500 HPN 4100 3950 4000 2300 2250 2150 500 450 llOO 900 250 700 I.,.)

HPW 2 2800 2900 550 500 1000 800 1050 850 1250 950 250 350 0

I f--'

HPW 1 17950 10900 950 950 1800 1950 5250 4100 1600 1350 400 500 u,

Discharge 800 1000 600 750 650 900 1600 1350 350 350 300 300 CBE 9550 8150 3300 2600 1500 1850 1650 1950 2250 2200 500 800 CBC 2500 3300 1750 1350 1100 1950 1600 1450 750 650 450 300 JI 1250 1400 1050 1100 950 900 1450 1200 500 450 500 700

TABLE 5

• James River Dominant Phytoplankton Organisms, July-December, 1975 IN- DIS-

.ATE ORGANISM DWS TAKE* HPEl HPE2 HPS HPN HPW2 HPWl CHARGE CBE CBC JI 7-10 Chroomonas sp. X X X X X X X X X X X X Katodinium rotunda tum X X X X Skeletonema costatum X X X X X X X X X X X X Gyrosigma sp. X 15p chrysophyte X Pyramimonas sp X X 8-12 Chroomonas sp. X X X X X X 15p chrysophyte X X X X X X X X X X X Skeletonema costatum X X X X X X X X X X X Gyrosigma sp. X X X X X X X Melosira sp. X 9-8 Chroomonas sp. X X X X X X X X X. X X 15p. chrysophyte X X X X X X X X X Skeletonema costatum X X X X X X X X X X X Gyrosigma sp. X X X X X X X Melosira sp. X X 10-7 Chroomonas sp. X X X X X X X X X X X X 15p chrysophyte X X X X X X X X Melosira sp.

• X X X X X X X X X X X X Cryptomonas*sp. X X X 11-5 Chroomonas sp. X X X X X X X X X X 15p chrysophyte X X X X Melosira sp. X X X X X X X X X X X X Gyrosigma sp. X X X Cryptomonas sp.

Nitzschia

. Kiltzingiana X 12-2 Nitzschia Klitzingiana X X X X X X X X X X X X 3p Flagellate X X X X X X X X X X X X Melosira sp. X X X X X X X X X X X X 3.0.A-16

TABLE 6 James River Chlorophyll Concentrations, July - December 1975 (pg Chl ~ per liter, surface samples, two samples per station)

Station July 10 Aug. 12 Sept. 8 Oct. 7 Nov. 5 Dec. 2 DWS 4.0 5.2 4.1 2.2 5.9 5.6 4.4 5.5 2.4 2.9 1.1 0.9 Intake 9.3 7.8 8.8 9.5 7.3 6.5 8.0 6.9 3.3 3.2 1. 0 0.9 HPE 1 5.1

• 3.9 3.9 3.4 4.7 7.6 6.9 6.3 2.7 3.0 1. 4 1. 5 HPE 2 4.5 3.7 3.6 5.2 6.4 6.5 4.8 4.4 3.6 3.1 1.1 1.1 RPS 5.2 7.0 3.5 4.2 6.2 5.6 7.6 6.2 3.9 3.5 1. 7 1. 7 HPN 5.9 5.6 13.8 6.8 8.4 11. 6 2.7 3.0 3.2 4.9 1. 3 1. 4

.w 0

HPW 2 3.8 5.2 3.0 3.5 4.6 5.4 6.9 6.0 3.8 3.5 1. 6 1.4

>I

-...J HPW 1 5.4 8.0 4.4 3.3 4.5 3.8 7.6 6.9 2.5 2.7 1.5 1. 2 Discharge 4.3 4.1 4.9 4.4 4.1 3.8 5.0 3.9 3.0 3.1 1. 5 1. 6 CBE 6.5 5.2 6.7 6.7 4.4 3;5 2.2 4.4 2.8 2.8 1. 9 1. 8 CBC 4.2 6:3 3.4 3.7 4.5 4.1 3.8 5.0 2.2 3.5 1. 9 2.1 JI 4.8 1. 9 5.2 4.0 3.9 3.3 3.3 3.2 3.2 4.0 1. 7 1. 7

TABLE 7 James River Ph!toplankton Primary Productivity, July - December 1975 (mg Cm- hr-1, surface samples, two samples per station)

Station July 10 Aug. 12 Sept. 8 Oct. 7 Nov. 5 Dec. 2 DWS 15.5 19.3 36.8 43.8 22.9 29.6 3.62 3.48 5.84 5.54 1. 04 1. 31 Intake 38.5 35. 5 68.0 63.2 15.0 21. 0 7.21 7.45 6.31 5.32 1. 79 2.23 HPE 1 23.7 25. 3 36.0 36.9 19.0 35.7 4.15 4.52 5. 96 5.34 2.02 1. 39 HPE 2 21.3 20. 5 36.6 20.4 23.4 33.8 4.39 3.29 3.95 3.98 2.01 2.30 RPS 21. 9 16.1 18.1 25. 9 13.3 13.1 3. 74 3.30 4.01 4.17 1. 09 1.11 HPN 38.4 28.8 84.6 58.8 27.8 24.6 1. 05 2.12 8.50 8.68 1. 03 1.11 L,.:)

0 HPW 2 26.6 20.6 20. 6 14.7 10.7 10.2 2.45 2.22 3.98 3.66 .993 .907

i:,.

~

CXl HPW 1 54.9 45.5 30.6 28.5 28.8 23. 7 12.2 10.8 9.06 7.38 1.31 1. 75 Discharge 12.2 13.0 16.3 17.1 10.2 10.4 4.85 4.08 4.80 4.80 1. 62 1. 79 CBE 35.9 37.1 41. 5 41. 0 18.5 27.8 4.69 4.99 6.50 6.23 1.17 1.17 CBC 21. 0 34.9 23.0 21.1 17.8 24.2 4.75 3.73 5. 45 5.05 1.18 1. 05 JI 14.1 15.2 19.7 19. 7 10.2 10.2 3.82 2.56 3.85 3.61 1. 22 1. 09

TABLE 8 James River Zooplankton; July 17, 1975 (Numbers of Organisms per 100 liters, surface samples, two samples per station) e Organism Station DWS INTAKE HPE 1 HPE 2 HPN RPS Copepod nauplii 1 454.85 770.40 1606.47 113.41 76.09 57.39 2 527.51 1059.16 1262.36 241. 25 102.56 133.64 x 491.18 914. 78 1434.42 177. 33 89. 33 95.52 s 51. 38 204.18 243.32 90.40 18. 72 53.92 s-X 36.33 114.38 172 .06 63. 92 13. 24 38.13 Acartia sp. 1 15.06 63.37 15.53 7.73 10.93 2 8.74 18.00 8.02 5.94 x 11.90 40.69 11. 78 8.44 s 4.47 32.08 5.31 3.53 s-X 3.16 22.69 3.76 2.50 Barnacle nauplii 1 24.10 28.35 120.79 42.27 19.13 2 18.57 381. 06 133 .13 166.67 38.61 x 21.34 204.71 126. 96 104.47 28.87 s 3.91 249.40 8.73 87.96 13. 77 s-X 2. 77 176.36 6.17 62.20 9.74 Harpacticoid 1 21.08 15.01 25. 88 23.20 2.73 copepods 2 18. 57 108.02 12.83 40.66 2.97

-X 19.83 61. 52 19.36 31. 93 2.85 s 1. 77 65. 77 9.23 12.35 0.17 s-X 1. 25 46.51 6.53 8.73 0.12 Euritemora sp. 1 43.18 38.35 65.57 23.20 21.86 2 40.41 117.02 27.27 8.13 11. 88 x 41. 80 77. 69 46.42 15.67 16.87 s 1. 96 55.63 27.08 10.66 7.06 s-X 1. 38 39.34 19.15" 7.53 4.99 Bosmina sp. 1 1. 00 12.89 2 40.66

-X 26.78 s 19.64 s-X 13.88 Cladocerans 1 5.00 5.18 (unidentified) 2 1. 60 8.13 2.97 x 3.39 s .. 2.53 s-X 1. 79 3.0.A-19

TABLE 8 (Cont.)

e James River Zooplankton; July 17, 1975 (Numbers of organisms per 100 liters, surface samples, two samples per station)

Organism Station DWS INTAKE HPE 1 HPE 2 HPN RPS Gastropod larvae 1 19.08 1. 67 12.08 2.58 2.73 2 13.10 4.81 2. 71 2.97

-X 16.09 8.45 2.65 2.85 s 4.23 5.14 *0.09 0.17 s- 2.99 3.64 0.07 0.12 X

Cyclopoid 1 18.98 2.58 copepods 2 1.09 12.00 32.53 5.94 x 17.56 s 21.18 s-X 14.98 Rotifers 1 2.58 2 21. 68 2.56

-X 12.13 s 13. 51 s- 9.55 X

Polychaete 1 2.01 1. 67 13.80 larvae 2 1. 09 27.00 2.97 X 1. 55 14.34 s 0.65 17. 91 s-X 0.46 12.66 Ostracods 1 1. 72 2 3.21 2. 71 X 2.47 s 1. 05 s- 0.74 X

Pelecypod larvae 1 1. 72 2.58 2

Decapod larvae 1 2 2.56 e

3.0.A-20

TABLE 8 (cont.)

James River Zooplankton; July 17, 1975 (Numbers of organisms per 100 liters , surface samples, two samples per station)

. Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Copepod nauplii 1 246.15 340.72 224.08 42.86 649.04 288.89 2 166.64 274.40 158.02 9.18 348.30 490.73 x 206.40 307.56 191. 05 26.02 498.67 389.81 s 56.22 46.90 46. 71 23.82 212.66 142. 72 s-X 39.76 33.16 33.03 16.84 150.37 100.92 Acartia sp. 1 . 32.17 43. 72 2.26 2 5.21 16.63 37.18 13. 63 x 24.67 40.45 s 11. 37 4.62 s- X 8.04 3.27 Barnacle 1 76. 32 81. 98 27.07 nauplii 2 74.84 41. 83 6.12 x 75.58 61. 91 16.60

.s 1.05 28.39 14.81 s-X 0.74 20.08 10. 47 Harpacticoid 1 26.76 32.71 5.46 copepods 2 8.32 4.65 3.11 X 20.52 5.06 s 17.25 0.57 s- 12.19 0.41 X

Eurytemora sp. 1 48.16 103.58 43. 72 113.07 33. 33 2 52.07 58.21 32.53 65.31 74.97 x 50.12 80.90 38.13 89.19 54.15 s 2.76 32.08 7. 91 33. 77 29.44 s-X

1. 95 22.69 5.60 23.88 20.82 Bosmina sp. 1 37.46 8.18 2.26 88.20 22.22 2 10.41 5.54 99.51 54.53

-X 23.94 6.86 93.86 38.38 s 19.13 1. 87 8.00 22.85 s-X 13.52 1. 32 5.66 16.16 Cladocerans 1 10.70 52.01 11.11 (unidentified) 2 15.62 34.21 6.82 x 13.16 43.11 8.97 s 3.48 12.59 3.03 s-X 2.46 8.90 2.15 3.0.A-21

TABLE 8 (Cont.)

James River Zooplankton; July 17, 1975 e (Numbers of organisms per 100 liters, surface samples, two samples per station)

Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Gastropod larvae 1 16.35 2 2. 77 6.82 X 9.56 s 9.60 s-X 6.79 Cyclopoid 1 48.16 19.08 16.40 11. 31 16.67 copepods 2 5.54 4. 65 12.44 81. 79 X 12.31 10.53 11. 88 49.23 s 9.57 8.31 0.80 46.05 s-X 6. 77 5.88 0.57 32.56 Rotifers 1 246.15 113.07 66.67 2 93.73 74.64 74.97

-X 169.94 93. 86 70. 82 s 107.78 27.17 5.87 s-X 76.21 19.21 4.15 Polychaete 1 8.18 10.93 larvae 2 5.21 Ostracods 1 -

2 Pelecypod 1 larvae 2 Decapod larvae 1 2 2. 77

3. 0.A- 22

TABLE 9 James River Zooplankton; August 21, 1975 e Organism Station HPN DWS INTAKE HPE 1 HPE 2 J. I.

Copepod nauplii 1 608. 32 1825.76 1291. 26 560.07 1015.79 2721. 28 2 674.86 1347.37 1295.49 546.50 529.55 2435.24 X 641. 59 1586.57 1293.38 553.29 772.67 2578.26 s 47.05 338.27 2.99 9.60 343.82 202.26 s-X 33.'27 239. 20 2.11 6.79 243.12 143.02 Acartia sp. 1 19.01 62.39 138.89 51.66 28.95 91.85 2 36.27 30.51 38.43 134.74 100.45 X 49.33 84. 70 45. 05 81.85 96.15 s 18.47 76.64 9.36 74.80 6.08 s-X 13.06 54 .19 _ 6.62 52.90 4.30 Barnacle nauplii 1 79. 21 39.40 120.12 27.19 7.78 2 25.59 24.18 44.59 9.40 1. 62 X 52.40 31.79 82.36 4.70 s 37.92 10.76 53.41 4.36 sx 26.81 7.61 37. 77 3.08 Polychaete 1 11. 49 30. 03 13.59 10.53 larvae 2 1. 73 . 28.16 46. 96 1. 57 x 6.61 29.10 30.28 6.05 s 6.90 1. 32 23.60 6.34 s-X 4.88 0.93 16.68 4.48 Harpacticoid 1 28.51 15.01 2.63 71. 61 copepods 2 15.99 7.04 3.13 27.54 x 22. 25 11. 03 2.88 49.58 s 8.85 5.64 0. 35 31.16 s-X 6.26 3.99 0.25 22.03 Pelecypod 1 13.13 5.44 40.48 larvae 2 1. 73 18. 77 21. 35 3.24 x 7.43 13.40 21. 86 s 8.06 11. 25 26.33 s- 5.70 7.95 18.62 X

Euritemora sp. 1 3. 71 3.75 2.63 348. 72 2 1. 73 139.34 x 244.03 s 148.05 s-X 104.69 3.0.A-23

TABLE 9 (cont.)

Organism Station e CBC CBE DISCHARGE CBS 1 CBS 2 CBS 3 Copepod nauplii 1 869.88 3670.14 1580.37 2531.36 2145.56 2878.11 2 1110. 28 2380.68 574.93 4481. 23 2392. 85 265. 72 x 990.08 3025. 41 1077. 65 3506.30 2269.21 1571. 92 s 169.99 911. 79 710.95 1378. 77 174.86 1847.24 s-X 120.20 644.73 502. 72 974.94 123.65 1306 .19 Acartia sp. *1 32. 29 58.64 49.08 114.07 36.68 68.17 2 18. 86 47.78 104.24 132. 67 19.90 3.24 X

25. 58 53.21 76. 66 123.37 28.29 35. 71 s 9.50 7.68 39.00 13.15 11. 87 45.91 s-X 6. 72 5.43 27.58 9.30 8.39 32.47 Barnacle nauplii 1 8.07 161. 77 461. 35 43.69 103.15 12.62 2 75.89 243.24 78.62 37.31 3.24 x ll8.83 352.30 61.16 70. 23

• 7.93 s 60. 73 154.23 24.70 46.56 6.63 s-X 42.94 109.05 17.47 32.92 4.69 Polychaete 1 2.02 8.09 3.27 2.43 2. 29 2.52 larvae 2 2.36 6.32 4.91 2.49 3.24 x 2.19 4.80 3.67 2.39 2.88 s 0.24 2.16 1. 75 0.14 0.51 s- X 0.17 1.52 1. 24 0.10 0.36 Harpacticoid 1 6.05 4.04 13. 09 4.85 18.34 copepods 2 2.81 6.32 78.62 12.44 3.24 x 3.43 9.71 41. 74 15.39 s 0.87 4.79 52.16 4.17 s- X 0.62 3.39 36.89 2.95 Pelecypod 1 2.02 1763.29 160 .18 309.45 ll6.13 larvae 2 2.36 8.43 25.27 34. 39 248.74 42.13 x 2.19 885.86 97.29 279 .10 79.13 s 0.24 1240.87 88.95 42.93 52.33 s-X 0.17 877. 43 62.90 30.36 37.00 Eurytemora sp. 1 2.02 10.11 26 .17 2.43 36.68 5.05 2 5.62 3.16 24.57 9.95

-X 7.87 14.67 13.50 23.32 s 3.17 16.27 15.66 18.90 s-X 2.24 11. 51 11. 07 13.37 3.0.A-24

TABLE 9 (Cont.)

- Organism Copepod nauplii 1 2'

HPW 2 890.86 596. 89 212.97 57.50 Station RPW 1. 5 RPW 1 2275.12 2766.03 RPS 1823.61 2788.91 RPM 1427.75 1805.57 J28 210.50 1113.51 x 743.88 135. 24 . 2520.58 2306.26 1616.66 662.01 s* 207.87 109.93 347 .13 682.57 26 7 .16 638.52 s-X 146.99 77. 74 245.46 482.65 188. 91 451.51 Acartia sp. 1 32.79 7.34 405.85 327.71 333.85 30.56 2 70.01 4.42 539.18 387.74 224.26 227.03 x 51. 40 5.88 472. 52 357.73 279.06 128.80 s 26.32 2.06 94.28 42.45 77. 49 138.93 s-X 18.61 1. 46 66.67 30.02 54.80 98.23 Barnacle nauplii 1 10.93 7.34 120.97 204.34 78.13 13.58 2 7.37 4.42 118.36 266.28 109.25 118.92 x 9.15 5.88 119.67 235.31 93.69 66.25 s 2.52 2.06 1.85 43.80 22.01 74.49 Sx 1. 78 1.46 1. 30 30.97 15.56 52.67 Polychaete 1 5.47 27.32 7. 71 13.58 larvae 2 3.68 13.15 23.36 5.75 21. 62 X 4.58 20.24 15.54 17.60 s 1. 27 10.02 11.07 5.69 s-X 0.89 7.09 7.82 4.02 Rarpacticoid 1 60.12 97.56 219.76 92.34 33.95 copepods 2 18.42 127.12 163.50 80.50 97.30 x 39.27 112.34 191. 63 86.42 65.63 s 29.49 20. 90 39.78 8.37 44.80 s-X 20. 85 14.78 28.13 5. 92 31.68 Pelecypod 1 278.74 14.69 308. 29 273.73 305.44 220.69 larvae 2 206.33 13.27 236. 71 378.39 264.51 810.81 x 242.54 13. 98 272. 50 326.06 284.98 515.75

• s 51. 20 1. 00 50.61 74.01 28.94 417.28 s-X 36.21 o. 71 35. 79 52.33 20.46 295.06 Eur:ytemera sp. 1 114. 77 7.34 66. 34 15.42 35.52 3.39 2 44. 21 4.42 56.99 135. 47 28.75 32.43 x 79.49 5.88 61. 67 75. 45 32.14 17.91 s 49.89 2.06 6.61 84.89 4.79 20.53 s-X 35. 28 1.46 4.68 60.03 3.39 14.52 3.0.A-25

TABLE (Cont.) 9 Organism Station e HPN DWS INTAKE HPE 1 HPE 2 J. I.

Gastropod larvae 1 3.28 4.67 2 3.20 X

s s-X Cladocerans 1 2

x s

s-X Rotifers 1 60. 20 7.51 5.26 2 38.38 64.04 x 49. 29 s 15.43 s-X 10.91 Barnacle cyprids 1 3.17 1. 64 2 9.59 4.86 x 6.38 s 4.54 s-X 3.21 Decapod larvae 1 18. 77 2. 72 2 1. 73 30.51 x 24.64 s 8.30 s-X 5.87 Coro:ehiu~ 1 lacustre 2.

x s

s-X Cyclopoid 1 14.01 copepods 2 1. 57 Bosmina sp. 1 6.23 2

Hydracarinids 1 2

3.0.A-26

TABLE (Cont.) 9 e Organism CBC CBE Station DISCHARGE CBS 1 CBS 2 CBS 3 Gastropod larvae 1 111. 22 8.80 13. 75 2 2.36 53.40 3.16 31. 94 17. 41

x 82.31 20.37 15.58 s 40.88 16.36 2.59 s-X 20.91 11. 57 1.83 Cladocerans 1 50.55 22.92 7.57 2 49.50 36.54 17.41 12.96 x 43.55 20.17 10.27 s 9.91 3.90 3.81 s-X 7.01 2.76 2.70 Rotifers 1 2

x s

s-X Barnacle cyprids 1 2 8.43 3.16 x

s s-X Decapod larvae 1 3.27 2.43 2 12.63 x 7.95 s 6.62 s-X 4.68 Corophium 1 6.54 lacustre 2 6.32 x 6.43 s 0.16 s-X 0.11 Cyclopoid 1 copepods 2 Bosmina sp. 1 2

Hydracarinids 1 2 3.16 3.0.A-27

TABLE 9 (Cont.)

e Organism HPW 2 Station HPW 1. 5 HPW 1 HPS HPM J28 Gastropod larvae 1 191. 22 100.24 106.55 10.19 2 7.37 223.56 135.47 80.50 43.24 x 207. 39 117.86 93.53 26. 72 s 22.87 24.91 18.42 23.37 s-X 16.17 17.62 13.03 16.53 Cladocerans 1 113.17 107.95 2 7.37 74.52 88.76 x 93.85 98.36 s 27.33 13.57 s-X 19.32 9.59 Rotifers 1 2

Barnacle cyprids 1 3.85 3.39 2 8. 77 X

s s-X Decapod larvae 1 7. 71 2

x s

s-X CoroEhium 1 lacustre 2 x

S.

s-X Cyclopoid 1 copepods 2 Bosmina sp, 1 2

Hydracarinids 1 2

3.0.A-28

TABLE 10 Jaines River Zooplankton; September 26, 1975 Organism Station DWS INTAKE HPE 1 HPE 2 HPS HPN Copepod nauplii 1 125.51 188.78 74.18 136. 47 424.50 367.51 2 165 .11 227.62 83.63 134.19 385.74 297.84 X 145.31 208.20 78.91 135.33 405.12 332.68 s 28.00 27.46 6.68 1. 61 27.41 49.26 s-X 19.80 19.42 4. 73 1.14 19.38 34.84 Eurytemora sp. 1 2.61 18.45 2.97 2.87 93.18 27.56 2 2.82 22.48 3.74 3.73 97. 93 37.75

-X 2. 72 20.47 3.36 3.30 95.56 32.66 s 0.15 2.85 0.54 0.61 3.36 7.21 s-X 0.11 2.02 0.39 0.43 2.36 5.10 Barnacle nauplii 1 3.92 95.10 1. 48 1.44 2. 96 2 7.06 102.57 2.50 2.48 1.19 x 5.49 98. 84 1.99 1.96 2.08 s 2.22 5.28 0. 72 0.74 1. 25 s-X 1.57 3.74 0.51 0.52 0.89 Harpacticoid 1 1. 31 8.52 1.44 17.75 11.81 copepods 2 2.82 4.21 2.48 17.91 2.80

-X 2.07 6.37 1. 96 17.83 7.31 s 1.07 3.05 0.74 0.11 6.37 s-X 0.76 2.16 0.52 0.08 4.51 Bosmina sp. 1 1. 31 2.97 11.49 152.35 11.81 2 1. 25 7.45 106.29 26.57 X 2.11 9.47 129.32 19.19 s 1. 22 2.86 32.57 10.44 s-X 0.86 2.02 23.03 7.38 Gastropod larvae 1 15.61 4.44 2 1. 41 7.03 1. 25 1.19 1. 40 X 11. 32 2.82 s 6.07 2.30 s-X 4.29 1.62 Acartia sp. .1 45.42 17. 75

• 2 40.75 4.78 X 43.09 11.27 s 3.30 9 .17 s-X 2.34 6.49 e

3.0.A-29

TABLE 10 (Cont.)

James River Zooplankton; September 26, 1975 Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Copepod nauplii 1 483.89 265.31 188.34 59. 77 164.41 241. 72 2 426.78 180.04 201. 59 146.03 125. 25 115.84

-X 455.34 222.68 194.97 102.90 144.88 178.78 s 40.38 60.29 9.37 61.00 27.69 89.01 s-X 28.56 42.64 6.63 42.13 19.58 62.94 Euritemora sp. 1 58.0Cl 108. 61 17.60 4.07 12.18 78.74 2 45. 91 109.07 16.39 3.36 7.55 28.56 x 51. 96 108.84 17.00 3. 72 9.87 53.65 s 8.55 0.33 0.86 a.so 3.27 35.48 s-X 6.05 0.23 0.61 0.36 2.32 25.09 Barnacle nauplii 1 26. 37 124.97 -

2 18.40 126.20 1. 68 X 22.39 125. 59 s 5.64 0.87 s-X 3.99 0.62 Harpacticoid 1 38.79 3.52 2. 72 copepods 2 3.40 32.85 3.28 x 35 .82 3.40 s 4.20 0.17 s-X 2.97 0.12 Bosmina sp. 1 8.29 52.75 3.52 4.07 62. 42

• 444.98 2 5.10 35.48 1. 68 48.29 128.54 X 6.70 44.12 2.88 55.36 286. 76 s 2.26 12.21 1. 69 9.99 223.76 s-X

1. 59 8.63 1.19 7.07 158.22 Gastropod larvae 1 7.76 3.52 2 1. 70 21. 03 3.28 1. 68 1. 51 X 14.40 3.40 s 9.38 0.17 s-X 6.64 0.12 Acantia sp. 1 17 .07 19.36 2 13.14 16.39 x 15.11 17.88 s 2.78 2.10 s-X

1. 97 1. 49 3.0.A-30

TABLE 10 (Cont.)

James River Zooplankton; 'September 26, 1975 Organism Station DWS INTAKE HPE 1 HPE 2 RPS HPN Rotifers 1 1. 44 17.06 2 6.99

-X 12.03 s 7.12 s-X 5.04 Cyclopoid 1 7.10 31.06 copepods 2 1.41 1. 25 15.53 4.19 X 4.26 23.30 s 4.02 10.98 s-X 2.85 7.76 Pelecypod larvae 1 2. 96 2 2.81 X

s s-X Polychaete 1 9.93 larvae 2 5.62 X 7.78 s 3.05 s-X 2.16 Cladocerans 1 1. 44 (unidentified) 2 2.48 X 1. 96 s 0.74 s- 0.52 X

Hydracarinids 1 1.48 2

3.0.A-31

TABLE 10 (Cont.)

I James River Zooplankton; September 26, 1975 e Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Rotifers 1 11. 60 3.52 2. 72 2 18.70 6.57 6.55 1. 68 1. 59 x 15.15 5.04 2.20 s 5.02 2.14 0.74 s-X 3.55 1.51 0.52 Cyclopoid 1 3.31 15.51 9.15 copepods 2 1. 70 21.03 X 2.51 18.27 s 1.14 3.90 s-x* 0.81 2.76 Pelecypod larvae 1 3.10 6.09 5.49 2 6.57 1. 59 X 4.84 3.54 s 2.45 2.76 s-X 1. 73 1. 95 Polychaete 1 1. 76 larvae 2 3.94 X

s s-X Cladocer ans 1 (unidentified) 2 X*

s s-X Hydracarinids 1 1. 83 2

3.0.A-32

TABLE 11 James River Zooplankton; November 3, 1975 e Organism Station DWS INTAKE HPE 1 HPE 2 HPS HPN Copepod nauplii 1 68.84 78.21 88.20 147.47 62.94 106.85 2 107. 86 86.12 161. 34 227.54 68.96 42.49 X 88.35 82.17 124. 77 187.51 65.95 74.67 s 27.59 5.59 51. 72 56.62 4.26 45.51 s-X 19.51 3. 96 36. 57 40. 04 3.01 32.18 Rotifers 1 88.70 5 7. 81 421. 70 48.60 214.57 688.97 2 94.38 163.17 578.94 99.41 191. 96 154.89 x 91.54 llO. 49 500.32 74.01 203.27 421. 93 s 4.02 74.50 l19.19 35. 93 15.99 377. 65 s-X 2.84 52.68 78.62 25.40 11. 31 267.04 Polychaete larvae 1 10.54 40.81 19.29 28.48 22.88 2 5.99 31. 73 15.82 48.60 14.91

-X 8.27 36.27 17.56 38.54 18.90 s 3.22 6.42 2.45 14.23 5.64 Sx 2.27 4.54 1. 73 10.06 3.99 Harpacticoid 1 6.80 1. 68 2.86 1.ll

• copepods 2 4.53 3.16 4.42 3.73 X 5.67 3.05 3.30 s 1. 61 1.94 0.62 s-X 1.14 1.37 0.44 Euri:temora sp. 1 3.40 5.51 3.35 4.45 2 9.06 3.16 2.21 5.59 X 6.23 4.34 2.78 s 4.00 1. 66 0.81 s-X 2.83 1.17 0.57 Cyclopoid 1 3.40 2.76 5. 72 copepods 2 3.16 1. 86

-X 2.96 3.79 s 0.28 2.73 s- 0.20 1. 93 X

Bosmina sp .. , 1 2 1. 37 x

s s-X 3.0.A-33

TABLE 11 (Cont.)

James River Zooplankton; November 3, 1975 e Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Copepod nauplii 1 229.49 26.07 79. 89 49.29 190.20 18.94 2 102.66 26.82 145.34 37.22 68.01 2.93 X 166.08 26. 45 112.62 43.26 129.11 10.94 s 89.68 0.53 46.28 8.53 86.40 11.32 s-X 63.42 0.38 32.73 6.04 61.10 8.00 Rotifers 1 491. 31 85.86 25.23 204.86 616.16 5.41 2 302.11 182.89 55.13 261. 85 140.56 2.93 X 396. 71 134.38 40.18 233.36 378.36 4.17 s 133.78 68.61 21.14 40.30 336.30 1. 75 s-X 94.60 48.52 14.95 28.50 237.80 1. 24 Polychaete 1 4.60 25.23 larvae 2 2.93 26.83 20.05 X 15.72 22.64 s 15. 72 3.66 s-X 11.11 2.59 Harpacticoid 1 1. 53 12.61 9.24 53.58 5.41 copepods 2 2.44 7.70 11.34 14.66

-X 1. 99 8.47 32.46 10.04 s 0.64 1. 09 29.87 6.54 s-X 0.46 0. 77 21.12 4.63 Euritemora sp. 1 8.41 1. 54 13.39 18.94 2 2.93 3.66 15.04 5.13 9.07 14.66 x 11. 73 3.34 11. 23 16.80 s 4.69 2.54 3.05 3.03 s-X 3.32 1. 79 2.16

• 2.14 Cyclopoid 1 2.68 copepods 2 X

s s-X Bosmina sp. 1 1. 53

• 2. 71 2 1. 22 1. 28 X 1. 38 s 0.22 s-X 0.15 3.0.A-34

TABLE (CONT.) 11 James River Zooplankton; November 3, 1975 e Organism Station DWS INTAKE HPE 1 HPE 2 RPS HPN Gastropod larvae 1 -,

2 1. 50 2.21 Acartia sp. 1 1. 68 2

Pelecypod larvae 1 2

Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J .I.

Gastropod larvae 1 2 5.01 Acartia sp. 1 2. 71 2 1.22 Pelecypod larvae 1 2.68 2 1. 22 2.93 3.0.A-35

TABLE 12 James River Zooplankton; November 18, 1975 e Organism Station DWS INT.AKE HPE 1 HPE 2 HPS HPN Copepod nauplii 1 38.26 47.89 31. 94 43.55 27.18 68.31 2 22.97 45.36 43.86 42.85 50.50 83.09 x 30.62 46.63 37.90 43.20 38.84 75.70 s 10.81 1. 79 8.43 0.49 16.49 10.45 s-X 7.64 1. 27 5.96 o. 35 11. 66 7.39 Rotifers 1 51.01 32.44 77. 33 59.39 34.43 478.15 2 47.08 32.02 56.14 131. 08 53.75 353. 62

-X 49.05 32.23 66.74 95.24 44.09 415.89 s 2.78 0.30 14.98 50.69 13.66 88.06 s-X 1. 97 0.21 10.59 35.85 9.66 62.27 Polychaete 1 31.88 63.34 77. 33 71. 27 21. 74 7.59 larvae 2 29.86 102.73 59.65 103.34 47.24 11.59 x 30.87 83.04 68.49 87.31 34.49 9.59 s 1. 43 27.85 12.50 22.68 18.03 2.83 s-X 1.01 19.70 8.84 16.03 12.75 2.00 Euritemora sp. 1 9.50 13. 90 3.36 5.94 2 8.04 2.67 1. 75 2.52 X 8. 77 8.29 2.56 4.23 s 1. 03 7.94 1.14 2.42 s-X 0.73 5.62 0.81 1. 71 Acartia sp. 1 3.09 1. 68 5.94 1. 63 2 2.30 4.00

-X 3.55 s 0.64 s-X 0.46 Bosmina sp. 1 2

X s

s-X Harpacticoid 1 3.09 copepods 2 Cyclopoid 1 copepods 2 1. 33 3.0.A-36

TABLE 12 (Cont.)

James River Zooplankton; November 18, 1975 e

Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Copepod nauplii 1 38.20 46.76 27.20 25.44 93.21 94.39 2 70.14 51.55 44.28 61.96 148.22 75.63 x . 54.17 49.16 35.74 43. 70 120. 72 85.01

s. 22. 58

• 3.39 12.08 25. 82 38.90 13.27 s-X 15.97 2.40 8.54 18.26 27.51 9.38 Rotifers 1 383.59 315.66 13.60 65. 72 360.95 363.74 2 491. 00 299.01 59.91 153.43 509. 30 249.57 x 437.30 307.34 36.76 109. 5.8 435 .13 306.66 s 75.95 11. 77 32. 75 62.02 104.90 80. 73 s-X. 53. 71 8.32 23.16 43.86 74.18 57.09 Polychaete 1 6.37 8.35 36.92 1. 98 larvae* 2 2.42 5.88 54.70 5.90 1. 89 x 4.40 7.12 45.81 s 2.79 1. 75 12.57 s-X 1. 97 1. 24 8.89 Euritemora sp. 1 2 7.81 2.39 X

s s-X Acartia sp. 1 1. 67 7. 77 5.95 2 7.81 2.39 X 7.79 4.17

• S 0.03 2.52 s-X 0.02 1. 78 Bosmina sp. 1 9.21 2 3.78

-X 6.50 s '.3.84 Sx 2. 72 Harpacticoid 1 1. 94 copepods 2 Cyclopoid 1 copepods 2 3.0.A-37

TABLE 12 (Cont.)

James River Zooplankton; November 18, 1975 Organism Station DWS INTAKE HPE 1 HPE 2 HPS HPN Gastropod larvae 1 2 1. 75 2.52 Decapods 1 1. 90 2

Barnacle 1 nauplii 2 Organism Station HPW 2 HPW 1 DISCHARGE CBE CBC J. I.

Gastropod larvae 1 2

Decapods 1 2

Barnacle nauplii 1 1. 94 2

3.0.A-38

TABLE 13 James River Zooplankton; December 29, 1975 Organism Station DWS INTAKE HPE 1 HPE 2 HPS HPN Copepod nauplii 1 27.87 24. 72 23.86 13. 46 15.55 19.76 2 17.32 17.83 14.45 7.51 16.62 20.82 x 22.60 21. 28 19.16 10.49 16.09 20.29 s 7.46 4.87 6.65 4.21 0.76 0.75 s-X 5.28 3.45 4. 71 2.97 0.54 0.53 Rotifers 1 953.47 226.39 117.00 74.63 132.86 186.49 2

• 968.73 196.15 169.02 317.07 299.22 379.71 x 961.10 211. 27 143.01 195.85 216.04 283.10 s 10.79 21. 38 36.78 171. 43 117.63 136. 63 s-X 7.63 15.12 26.01 121. 22 83.18 96.61 Eurytemora sp. 1 2.93 9.11 1. 41 1. 22 7.07 2.47 2 6.66 4.86 2.89 1. 50 7.67 7.35 X 4.80 6.99 2.15 1. 36 7.37 4.91 s 2.64 3.01 1.05 0.20 0.42 3.45 s-X 1. 86 2.13 0.74 0.14 0.30 2.44 Polychaete 1 149.62 287.54 171. 98 256.93 190.81 90.16 larvae 2 185.22 260.99 260.04 643.16 204.60 53.89 x 167.42 274.27 216.01 450.05 197.71 72.03 s 25.17 18.77 62.27 273.11 9.75 25.65 s-X 17.80 13.28 44.03 193.11 6.90 18.14 Harpacticoid 1 2.93 2.83 1. 24 copepods 2 3.24 1.44 3.84 x 3.34 s o. 71 s-X 0.51 Acartia sp. 1 2

x s

s-X Cyclopoid 1 1. 22 copepods 2 1. 33 1. 62 x

s s-X

- 3.0.A-39

TABLE 13 (Cont.)

- Organism James River Zooplankton; December 29, 1975 HPW 2 HPW 1 Station DISCHARGE CBE CBC J. I.

Copepod nauplii 1 28.99 17.17 17.54 13.67 40.81 6.82

.2 3.04 10.36 24.68 13. 70 59.60 18.19 x 16.02 13. 77 21.11 13.69 50.21 12.51 s 18.35 4.82 5.05 0.02 13. 29 8.04 s-X 12.97 3.81 3.57 0.01 9.39 5. 69 Rotifers 1 101. 47 201.11 72. 22 316.07 51.01 20.47 2 42.50 133.33 151.02 252.81 22.70 38.98 x 71. 99 167.22 111.62 284.44 36.86 29.73 s 41. 70 47.93 55. 72 44.73 20.02 13.09 s-X 29.49 33.89 39.40 31. 63 14.15 9. 25 Eurytemora sp. 1 10.87 7.36 3.10 6.83 10.20 23.88 2 6.07 1. 29 0.99 1. 24 2.84 12.99 x 8.47 4.33 2.05 4.04 6.52 18.44 s 3.39 4.29 1. 49 3.95 5.20 7.70 s-X 2.40 3.04 1.05 2.80 3.68 5.45 Polychaete 1 61. 61 77.26 169.21 73.46 10.20 3.41 larvae 2 85.01 169.58 174.71 44.83 7.80 x 73.31 123.42 171. 96 59.15 5.61 s 16.55 65.28 3.89 20.24 3.10 s-X 11. 70 46.16 2.75 14.31 2.19 Harpacticoid 1 28.99 2.45 2. 06 5.12 3.40 6.82 copepods 2 24.29 6.47 0.99 2.49 2.84 2.60 x 26.64 4.46 1. 53 3.81 3.12 4. 71 s 3.32 2.84 0.76 1. 86 0.40 2.98 s-X 2.35 2.01 0.54 1. 32 0.28 2.11 Acartia sp. 1 6.80 3.41 2 14.19 x* 10.50 s 5.23 s-X 3.70 Cyclopoid 1 3.41 copepods 2 5.20 x 4;31 s 1. 27 s-X 0.89 3.0.A-40

TABLE (Cont.) 13

- Organism James River Zooplankton; December 29, 1975 DWS INTAKE Station HPE 1 HPE 2 HPS HPN Bosmina sp. 1 2.47 2 1.22 x 1. 85 s 0.88 s-X 0.63 Barnacle nauplii 1 1. 41 2 4.33 Gastropod larvae 1 2 1. 28 Pelecypod larvae 1 2

Amphipods 1 2

Organism Station HHW 2 HPW l DISCHARGE CBE CBC J. I.

Bosmina sp. 1 1.23 2

X s

s-X Barnacle nauplii 1 1.03 2

Gastropod larvae 1 2

Pelecypod larvae 1 6.82 2 6.07 1. 24 Amphipods 1 1.03 2

3.0.A-41

TABLE 14 James River Benthos; July 9' 1975 Species, Number of Individuals and Total Wet Weight (Without Clam Shell) in Grams per O.lm2 at Each Station Species Station 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 Mollusks Rangia cuneata 4 17 2 33 1 4 3 8 5 8 34 4 7 6 1 Congeria leucopaeta 1 2 1 1 Macoma mitchelli 2 Macoma balthica Corbicula manilensis 1 1 1 1 1 1 Hydrobia sp. 44 21 19 234 24 1 6 4 2 2 15 30 2 1 Mya arenaria w Brachidontes

~

.ll>

0 recurvus I

.i::-. Annelids N

Polychaetes Scolecole;eides viridis 2 1 1 1 1 1 1 3 4 2 1 Nereis succinea 1 1 1 1 Lysipiddes grayi Polydora ligni Laeonereis culveri Heteromastus filiformis Oligochaetes 3 15 4 4 1 2 4 3 3 1 3 1

TABLE (Cont.) 14 James River Benthos; July 9, 197~

Species, Number of Individuals and Total Wet Weight

, (Without Clam. Shell) in Grams per 0.1 m2 at Each Station Species Station 1 2 3 4 . 5 6 7 8 9 10 11 12 13 14 15 16 Amphipods Gammarus sp.

Corophium lacustre 4 1 Lepidactylus dytiscus 6 3 7 4 Leptocheirus plumulosus 4 10 6 2 2 2 1 4 11 10 Monoculodes

.w edwardsi 0

Caprella sp. 1 1 I

t; Isopods Cyathura polita Edotea triloba Chiridotea almyra 1 1 Dipteran larvae 2 2 2 1 1 2 1 3 5 2 1 1 Nemerteans 1 2 1 1 2 Hydroids X X X X X X X X X X X Nematodes 2 Biomass(Grams) 2.4 3.7 2.2 5.8 '0.2 1.3 2.0 0.5 0.9 0.2 5.9 0.2 2.7 1.0 0.2 0.7

TABLE 15 James River Benthos; August 7, 1975 Species, Number of Individuals and Total Wet Weight (Without Clam Shell) in Grams per O.lm2 at Each Station Species Station 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Mollusks Rangia cuneata 6 12 1 36 9 12 3 18 3 26 8 4 5 2 21 Congeria leucophaeta 4 30 3 1 Macoma mitchelli 2 Macoma balthica Corbicula manilensis 1 1 2 2 8 1 1 Hydrobia sp. 10 3 12 1 5 1 3 9 29 1 14 Mya arenaria L,.)

0 Brachidontes recurvus 2 D:>

I Annelids

~

~

Polychaetes Scolecolepides viridis 1 1 5 6 1 7 1 Nereis succinea 1 2 12 1 1 Lysipiddes grayi Polydora ligni Laeonereis culveri Heteromastus filiformis Oligochaetes 2 3 3 6 1 5 3 3 1

TABLE (cont.) 15 James River Benthos; August 7' 1975 Spe'cies, Number of Individuals and Total Wet Weight (Without Clam Shell) in Grams per O.lm2 at Each Station Species Station

.1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Amphipods Gammarus ~* 2 Corophium lacustre 2 5 Lepidactylus dytiscus 2 10 4 Le12tocheirus plumulosus 1 2 4 1 1 Monoculodes edwardsi I.,)

0 Caprella sp . 1

>I Isopods

+""

V, Cyathura polita Edotea triloba Chiridotea almyra Dipteran larvae 1 3 1 3 3 1 7 1 Nemerteans 1 1 1 1 Hydroids X X X X X X X X X Balanus sp.

Nematodes Biomass (Grams) 2.0 2.2 0.5 2.9 0.6 2.4 1. 9 2.2 0.4 0.1 4.8 3.0 1.0 1.1 0.1 1. 0

TABLE 16 James River Benthos; September 30, 1975 Species, Number of Individuals and Total wet Weight (Without Clam Shell) in Grams per O.lm2 at Each Station S:eecies Station 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Mollusks Rangia cuneata 3 12 2 16 11 15 5 9 3 26 3 6 3 16 Congeria.

leucophaeta 1 16 1 Macoma mitchelli Macoma balthica Corbicula manilensis 1 1 1 12 Hydrobia sp. 1 Mya arenaria Brachidontes recurvus 1 Annelids

>J Polychaetes l>

I

!'\ Scolecolepides viridis 2 12 1 1 2 Nereis succinea 1 1 7 1 Lisipiddes grayi 1 Polydora ligni Laeonereis culveri Heteromastus filiformis Oligochaetes 1 1 7 6 4 5 2 1 3 2 8 3 2

TABLE (Cont.) 16 e James River Benthos; September 30, 1975 Species, Number of Individuals and Total Wet Weight (Without Clam Shell) in Grams per O.lm2 at Each Station Species Station 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Amphipods Gammarus sp.

Corophium lacustre 1 3 Lepidactylus dytiscus 1 4 1 Leptocheirus plumulosus 5 6 5 1 1 Monoculodes edwardsi Caprella sp. 1 1

,)

Isopods

~- Cyathura polita

.J Edotea triloba Chiridotea almyra Dipteran larvae 1 2 1 1 1 Nemerteans 1 Hidroids X X X X X X X X X X Balanus sp. 2 Nematodes Biomass (Grams) 0.9 2.5 0.7 2.1 1. 8 4.2 1. 7 1.2 0.4 0-:.1 3.2 0.1 1.3 0.6 0.7 2.5

TABLE 17 Fouling Organisms 1975 Station DWS

' 2 Horizontal Plate No. organisms/dm Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 109 423 Bivalves - Brachidontes recurvus Congeria leucophaeta 21 177 Amphipods - Corophium lacustre 642 491 1 Gannnarus sp. 3 Polychaetes Nereis succinea 4 2 Scolecolepides viridis Flatworms - Stylochus elliptus Crabs - Rhithopanopeus horrisii Ectoprocts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydro ids X Dipteran Larvae Total No. of Genera (not including Hydroids and Dipteran Larvae) 5 4 1 Total No. of Organisms (not including Bryozoans or Hydroids) 779 1093 1 e

3,0.A-48

- Table 17 (cont.)

Fouling Organisms 1975 Station DWS 2

Vertical Plate No. organi~ms/dm Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 244 352 Bivalves - Brachidontes recurvus Congeria leucophaeta 7 15 4 Amphipods - Corophium lacustre 601 148 5 Gammarus sp. 4 Polychaetes Nereis succinea 6 Scolecolepides viridis Flatworms - Stylochus ellipticus Crabs - Rhithopanopeus horrisii Ectoprocts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydroids X X X Dipteran Larvae Total No. of Genera (not including Hydroids and Dipteran Larvae) 4 4 2 Total No. of Organisms (not including Bryozoans or Hydroids) 858 519 9 3.0.A-4~\

e TABLE 18 Fouling Organisms 1975 Station CBN Horizontal Plate No. organisms/dm 2 Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 510 711 Bivalves - Brachidontes recurvus Congeria leucophaeta 8 6 2 Amphipods - Corophium lacustre 385 99 Gammarus sp. 106 2 Polychaetes Nereis succinea Scolecolepides viridis Flatworms - Stylochus ellipticus Crabs - Rhithopanopeus horrisii Ectopro~ts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydroids X X Dipteran Larvae 11 Total No. of Genera (not including Hydroids and Dipteran Larvae) 4 4 1 Total No. of Organisms (not including Bryozoans or Hydroids) 1020 818 2 3.0.A-50

- Table 18 (cont.)

Fouling Organisms 1975 Station CBN 2

Vertical Plate No. organisms/dm Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 283 1173 Bivalves - Brachidontes recurvus Congeria leucophaeta 33 20 1 Amphipods - Corophium lacustre 291 493 Gammarus sp. 73 2 Polychaetes Nereis succinea Scolecolepides viridis Flatworms - Stylochus ellipticus Crabs - Rhithopanopeus horrisii 2 Ectoprocts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydroids X X X Dipteran Larvae 8 1 Total No. of Genera (not including Hydroids and Dipteran Larvae) 5 3 2 Total No. of Organisms (not including Bryozoans or Hydroids) 690 1687 3 3.0.A-51

TABLE 19 Fouling Organisms 1975 Station CBS Horizontal Plate 2 No. organisms/dm Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 12 1424 Bivalves - Brachidontes recurvus Congeria leucophaeta 78 77 1 Amphipods - Corophium lacustre 569 602 6 Gammarus sp. 19 Polychaetes Nereis succinea Scolecolepides viridis Flatworms - Stylochus ellipticus Crabs - Rhithopanopeus horrisii Ectoprocts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydroids X X X Dipteran Larvae 1 2 Total No. of Genera (not including hydroids and dipteran larvae) 4 3 2 Total No. of Organisms (not including Bryozoans and Hydroids) 679 2103 9 3.0.A-52

Table 19 (cont.)

Fouling Organisms 1975 Station CBS Verti*cal Plate No. organisms/dm2 Jul. - Aug. Sep. - Oct. Nov. - Dec.

Barnacles - Balanus sp. 37 955 Bivalves -Brachidontes recurvus Congeria leucophaeta 48 so Amphipods - Corophium lacustre 416 875 7 Gammarus sp.

Polychaetes Nereis succinea Scolecolepides viridis Flatworms - Stylochus ellipticus Crabs - Rhithopanopeus horrisii 1 Ectoprocts - Bowerbankia sp.

Bryozoans - Membranipora tenuis Hydroids X X X Dipteran Larvae Total No. of Genera (not including Hydroids and Dipteran Larvae) 3 4 1 Total No. of Organisms (not including Bryozoans or Hydroids) 501 1881 7

TABLE 20 Phytoplankton Entrainment Data; April 7-8, 1975 Date Tide Time Station Depth Temp. Sal. D.O. Chl a Total Cells (1975) (EDT) (m) f C) (%0) (mg/1) (11g/l) per ml 4-7 HWS 1135 Intake 0 8.70 4.06 9.89 3.0 2.4 400 250 4 8.70 4.51 10.15 2.6 2.5 500 400 8 8.55 4.65 10.09 2.8 2.8 450 450 4-7 1235 Discharge 0 16.80 4.32 9.89 3.1 3.3 500 500 1 16.70 4.32 9.43 3.5 3.0 250 600 2 16.70 4.32 9.83 3.2 3.1 450 450 4-7 LWS 1759 Intake 0 10.20 3. 45 10.41 2.5 2.2 600 400 3.75 9.90 3.62 10. 09 3.0 2.9 450 550 7.5 9.80 3.82 10.31 2.6 2.7 500 400 w

4-7 1900 Discharge 0 18.40 3.75 9.93 2.5 2.5 450 550 0

1 18.20 3. 72 9.97 2.2 2.1 300 450

>I 18.00 3. 71 10.03 2.1 2.3 250 400 Ul 2

.p,.

4-7 HWS 2308 Intake 0 9.20 4.35 10.25 2.0 2.5 400 550 4 9.30 4.53 10.41 2.7 2.9 550 450 8 9.20 4.58 10.45 3.5 2.8 650 700 4-8 0009 Discharge 0 17.40 4.48 10.03 2.5 2.8 500 300 1 17.10 4.47 10.09 2.6 2.4 400 600 2 17.10 4.45 10.13 2.8 2.8 250 450 4-8 LWS 0620 Intake 0 8.60 4.53 10.43 3.9 3.2 800 4 8.95 5.06 10.03 3.3 3.7 550 8 8.,80 5.09 10.33 3.6 3.2 500 600 4-8 0721 Discharge 0 17.20 4.52 9.81 2.2 2.4 1 17.10 4.51 10.11 3.5 2.5 2 17.10 4.48 9.89 2.5 2.7

TABLE 21 Phytoplankton Entrainment Data; May 8-9, 1975 Date Tide Time Station . Depth Temp, Sal. D.O. Chl a Total Cells (1975) (EDT) (m) ~ C) (o/':)o) (mg/1) (µg/1) per ml 5-8 HWS 1124 Intake 0 19.00 .910 8.15 3.8 3 ..5 4.25 19.60 .924 8.03 3.5 3.5 (1600 1350) 8.5 18.40 1. 07 8.27 3.5 3.5 5-8 1222 Discharge 0 23.60 .818 8.33 3.5 3.8

1. 5 23.60 .812 8.17 3.3 3.5 (1700 1550) 3 23.60 .812 7.97 4.0 4.1 5-8 LWS 1830 Intake 0 21. 65 1.10 8.48 4.9 4.8 4.25 21. 45 1. 09 8.60 .5.7 4.9 (1900 2200) 8.5 20.80 .981 8.78 4.3 4.8

.l,.)

.iJ:>

0 5-8 1931 Discharge 0 25.20 .684 8.21 4.7 5.9 I 1. 5 25.20 .684 8.35 5.0 4.0 (2350 2050)

U1 U1 3 25.20 .662 8.17 5.4 5.2 5-9 HWS 0010 Intake 0 19.45 1. 28 8.21 5.0 4.4 4.25 19.40 1. 20 8.56 4.7 3.6 (1950 1900) 8.5 19.20 1. 31 8.46 3.8 4.8 5-9 0110 Discharge 0 24.20 1.04 8.29 3.8 4.4

1. 5 24.00 1.02 8.13 3.4 4.2 (2000 1900) 3 23.80 1. 01 8.01 4.4 4.7 5-9 LWS 0705 Intake 0 18.15 .737 8.07 4.5 3.5 4.25 18. 20

• 745 4.2 3.8 (2000 1900) 8.5 18.25 .762 7. 65 4.0 4.6 5-9 0807 Discharge 0 23.40 .734 8.01 3.2 4.5

1. 25 23. 30 .751 7. 71 4.6 4.5 (1750 1900) 2.5 23.20 .745 7.91 4.2 5.1

e e TABLE 22 Phytoplankton Entrainment Data; June 2-3, 1975 Date Tide Time Station Depth Temp Sal. D.O. Chl a Total Cells (1975) (EDT) (m) ( C) %0 (mg/1 (µg/1) per ml 6-2 LWS 1456 Intake 0 28.70 .792 10.18 4.8 6.1 4 27.40 .621 8.33 7.6 7.0 (4000 3700) 8.25 27.30 .591 7.88 3.8 4.3 6-2 1556 Discharge 0 32.50 . 693 8.41 4.8 7.2

1. 25 32.40 .704 8.43 4.2 6.4 (2400 2550) 2.5 32.40 .709 8.39 3.8 4.6 6-2 HWS 1949 Intake 0 26.40 .599 8.43 4.3 4.7

4. 25 26.25 .629 7.82 4.6 4.1 (1450 llOO) 8.5 26.20 .629 7. 96 4.6 4.8 L,.)

0 6-2 2047 Discharge 0 32.50 .624 8.27 5.0 3.8

~ ~ 1. 25 32.40 .621 7.84 4.9 4.6 (llOO 900)

Vl 2.5 32.15 .621 7.86 5.4 4.7

°'

6-3 LWS 0310 Intake 0 24.80 .657 7.88 4.8 4.8 4 24.55 . 643 7. 66 4.0 4.3 ( 800 1200) 8 24.00 .748 8.43 5.2 5.3 6-3 0412 Discharge 0 30.90 .679 7.74 4.4 4.1

1. 25 30.80 .657 8.11 4.4 3.8 ( 650 600) 2.5 30.40 .657 7.80 4.4 4.4 6-3 HWS 2013 Intake 0 24.85 .874 7.86 4.3 3.5 4.25 24.90 .941 8.04 3.5 2.7 (1800 1600) 8.5 24.90 .961 7.44 3.4 4.0 6-3 2114 Discharge 0 30.70 .876 7.74 2.5 2.5

1. 25 30.65 .876 7.50 3.0 3.8 (ll50 900) 2.5 30.65 .882 7.34 4.4 3.1

TABLE 23 Phytoplankton Entrainment Data; July 15-16, 1975 Date Tide Time Station Depth Temp Sal. D.0. Chl a Total Cells (1975) (EDT) (m) ( C) %0 (mg/1) (}lg/1) per ml 7-15 LWS 1322 Intake 0 28.15 2.56 7.22 8.3 6.2 4.5 28.00 2.52 7.18 8.0 7.6 (2150 1800) 8.75 27.90 2.52 7.34 7.1 8.1 7-15 1423 Discharge 0 35.40 2.58 6.87 4.8 4.7 1.1 35.20 2.59 7.02 4.4 5.1 ( 500 500) 2.25 35.35 2.59 7.22 5.6 5.1 7-15 HWS 1900 Intake 0 26.80 1. 96 7.28 3.0 3.0 4.5 26. 70 1. 96 6.97 4.8 3.3 (1500 1550) 9.0 26.75 2.17 7.18 4.5 5.5

.w 7-15 2000 Discharge 0 34.40 2.12 7.18 2.4 2.8

.0

i>

1. 5 34.20 34.15 2.13 2.15 6.89 6.67 4.0 5.7 4.4 4.0

( 550 600)

I 3.0 Vl

-..J 7-16 LWS 0155 Intake 0 27.20 1.58 6.44 2.9 3.8 4.25 27.05 1. 74 6.89 4.0 3.8 ( 850 1250) 8.5 26.80 1. 97 6.49 2.3 5.0 7-16 0255 Discharge 0 34.40 1. 95 6.81 2.5 3.8

1. 25 34.30 1. 96 6.59 1. 9 2.5 ( 450 500) 2.5 34.05 2.00 6.61 3.2 3.0 7-16 HWS 0703 Intake 0 26.95 1. 69 6.81 2.8 2.8 4.25 26.85 1. 74 6.30 2.8 3.0 (1200 1350) 8.5 26.80 1. 76 6.65 4.0 2.7 7-16 0803 Discharge 0 34.30 1. 66 6.30 2.1 2.7

1. 25 34.20 1. 65 7.14 2.7 2.3 ( 500 500) 2.5 34.10 1. 65 6.40 3.8 2.7

TABLE 24 Phytoplankton Entrainment Data; August 18-19, 1975 Date Tide Time Station Depth Temp Sal. D.O. Chl a Total Cells (1975) (EDT) (m) ( C) <%0) (mg/1) iE_gjl) per ml 8-18 HWS 1109 Intake 0 29.55 5. 69 8.30 11.6 5.4 4.1 29.40 5.81 7.42 10.1 9.8 (5600 5850) 8.25 29.40 5.84 7.34 13.4 9.2 8-18 1209 Discharge 0 37.70 5.70 6.69 5.1 5.7

1. 25 37.70 5.70 6.59 5.6 7.4 (2200 2100) 2.5 37. 70 5.69 7.02 6.2 8.9 8-18 LWS 1753 Intake 0 30.75 5.16 8.54 8.7 12.6 4.6 30.80 5.15 8.30 9.7 8.5 (5000 5400) 9.1 30.80 5.15 8.10 12.0 23.1

.w 8-18 1853 Discharge 0 39.10 4.94 7.24 6.0 6.5 0 1. 25 38.80 4.94 7.86 7.6 5.1 (1600 1550)

i:,.

I 2.5 38.60 4.93 7.20 12.7 14.8 Ln 00 8-19 HWS 0011 Intake 0 29.95 5.35 7.54 10.8 10.6 4.6 29.85 5.45 7.54 12.9 9.9 (4550 4600) 9.1 29. 70 5.62 7.30 8.3 8.0 8-19 0112 Discharge 0 37.65 5.51 6.93 5.1 4.4

1. 25 37.65 5.51 7.10 3.7 3.7 (1450 950) 2.5 37.40 5.50 6.75 5.2 5.2 8-19 LWS 0649 Intake 0 29.35 5.15 6.49 11. 2 11.1 4.6 29.15 5.16 6.95 11. 3 8.3 (6950 7300) 9.1 28.30 5.64 6.15 6.5 9.4 8-19 0749 . Discharge 0 37.20 5.04 6.63 4.6 4.6

1. 25 37. 20. 5.04 6.63 4.9 6.5 (2800 2950) 2.5 37.00 5;03 6.41 4.0 4.0

e e TABLE 25 Phytoplankton Entrainment Data; September 17-18, 1975 Date Tide Time Station Depth Temp. Sal. D.O. Chl a Total Cells (1975) (EDT) (m) ( C) fpo) (mg/1) (µg/1) per ml 9-17 HWS 1135 Intake 0 22.15 4.32 4.4 3.8 4.75 22. 00* 4.46 7.53 4.3 3.5 9.75 21. 90 4.47 8.14 4.6 5.3 9-17 1236

• Discharge 0 29.50 4.30 7.74 3.7 3.1

1. 25 29.50 4. 30

• 7.78 3.2 4.2 2.5 29.50 4.28 7.37 4.7 4.8 9-17 LWS 1833 Intake 0 23.30 3.85 8.18 3.7 4.2 4.75 22.90 3.82 8.12 4.7 4.4 9.5 22.90 3.90 8.54 4.8 4.6 L,..)

9-17 1933 Discharge 0 31. 60 3.64 7.76 2.0 2.2 0

1. 25 31. 25 3.62 7.68 2.1 3.2 I 2.5 31.10 3.61 9.09 2.8 2.4 Lil

\0 9-18 HWS 0018 Intake 0 22.3 4.36 7.58 2.9 2.4 4.75 22.3 4.44 7.98 2.7 2.9 9.5 22.2 4.42 7.70 3.5 3.4 9-18 0118 Discharge 0 30.5 4.38 7.19 1. 6 2.4

1. 25 30.5 4.37 8.58 2.7 2.2 2.5 30.1 4.37 7.51 2.7 3.0 9-18 LWS 0656 Intake 0 22.0 4.39 7.98 3.7 3.4 4.75 22.0 4.39 7.70 3.5 3.3 9.5 22.0 4.38 7.98 3.6 2.8 9-18 0756 Discharge 0 29.9 4.16 7.25 2.3 2.2

1. 5 29.9 4.17 7.62 2.3 2.3 3.0 29. 6 4.15 7.41 2.4 2.7

TABLE 26 Phytoplankton Entrainment Data; October 16-17, 1975 Date Tide Time Station Depth Temp, Sal. D.O. Chl a Total cells (1975) (EDT) (m) ( C) (%0) (mg/1) (µg/1) per ml 10-16 HWS 1106 Intake 0 20. 55 2.49 8.18 5.4 4.4 4.5 20.55 2.54 7 .38 4.9 3.7 8.75 20.55 2.54 7.54 4.9 4.3 10-16 1210 Discharge 0 26.20 2.30 7.86 3.9 3.3

1. 25 26.20 2.30 7.44 3.7 3.8 2.5 26. 35 2.30 7.94 4.3 3.9 10-16 LWS 1728 Intake 0 21. 20 1. 96 7.84 3.1 3.2 4.25 21. 40 1. 86 7.44 2.7 3.7 8.5 21.15 1. 83 8.10 2.6 3.8

.w 0

10-16 1821 Discharge 0 27.70 2.00 7, 74 3.1 2.1

i,..

1. 25 27.60 2.01 7.38 3.2 2.8 I 2.5 27.60 2.02 7.34 2.7 2.8

°'

0 10-16 HWS 2313 Intake 0 20.55 1. 97 8.52 3.1 2.8 4.5 20.55 2.06 7,92 2.7 2.2 9.0 20.50 2.09 7,94 2.2 2.5 10-17 0013 Discharge 0 26.70 2.29 8.09 2.6 2.2

1. 25 26.40 2. 29 7.98 2.9 2.8 2.5 26.20 2.32 7.34 3.1 2.7 10-17 LWS 0620 Intake 0 20.00 1. 90 7.58 2.4 1. 9 4.5 19.85 2.10 8.18 2.6 3.0 9.0 19,75 2.13 7.56 3.0 3.9 10-17 0720 Discharge 0 26.10 1. 99 7.46 2.6 2.2

1. 25 25.80 1. 98 7.10 2.4 2.8 2.5 25. 65 1. 98 6.85 2.9 2.7

TABLE 27 Phytoplankton Entrainment Data; November 19-20, 1975 Date Tide Time Station Depth Temp. Sal. D.O. Chl a Total Cells (1975) (EST) (m) ( C) (Jbo) (mg/1) (µg/1) per ml 11-19 HWS 1300 Intake 0 14.20 2.98 9.01 1. 6 2.0

4. 75 13.90 3.33 9.36 2.0 1. 8 9 . .5 14.00 3.36 9.82 2.4 2.0 11-19 1400 Discharge 0 19.45 3.10 8.85 1. 5 1. 3

1. 25 19.45 3.10 8. 71 1. 6 1. 6 2.5 19.40 3.08 8.79 1. 8 1. 9 11-19 LWS 1949 Intake 0 13. 60 3.10 9.27 1. 3 1. 4 4.5 13. 60 3.12 8. 71 1. 3 1. 2 9.0 13.60 3.13 9.13 1. 2 1. 3

.w 11-19 2048 Discharge 0 19.80 2.91 8.99 1. 0 1.1

.il>

0

1. 25 19.60 2.91 9.03 1.1 1. 2 I 2.5 19.35 2.90 8.91 1.1 1. 3 0\

11-20 HWS 0007 Intake 0 13. 60 3.26 8. 77 1.1 4.75 13.45 3.25 9.05 1.1 1. 4 9.5 13.40 3.27 9.03 1. 5 1.4 11-20 0104 Discharge 0 19.40 3.11 8.79 1.1 1.4

1. 25 19.00 3.12 9.05 1.0 1.1 2.5 18.60 3.16 9.25 1. 4 1. 3 11-20 LWS 0739 Intake 0 12.85 2.98 9.01 1. 9 1. 6 4.5 12.85 3.00 8.93 1.8 2.0 9.0 12.80 3.00 8.59 1. 9 1. 9 11-20 0840 Discharge 0 18.95 2.84 8.97 1. 4 1. 3

1. 0 18.80 2.84 8.43 1. 5 1. 0 2.0 18.70 2.84 8.63 1. 3 1. 4

TABLE 28 Phytoplankton Entrainment Data; December 17-18, 1975 Date Tide *Time Station Depth Temp. Sal. D.O. Chl a Total Cells (1975) (EST) (m) ( C) <%0) (mg/1) (µg/1) per ml*

12-17 HWS 1156 Intake 0 10.00 4.81 10.56 1.9 2.0 4.5 10.05 4. 77 10. 20 2.0 2.1 9.0 10.10 4.97 10.02 2.0 2.5 12-17 1258 Discharge 0 16.90 4.55 10.04 1. 4 2.1

1. 0 16.80 4.53 10.00 1. 8 2.1 2.0 16.60 4.53 10.18 1.8 1. 6 12-17 LWS 1846 Intake 0 9.70 4. 20 10.04 1. 2 1. 5 4.5 9.70 4.22 10.10 1.1 1.4 9.0 9.65 4.20 10.08 1. 2 1.4

.w 12-17 1946 Discharge 0 17.65 4.09 10.12 1. 3 1. 4

.0 1.0 17.35 4.10 9.90 1. 2 0.9

i> 2.0 17.05 4.10 10.10 1.4 1. 0 I

O'\

N 12-17 HWS 2308 Intake 0 9.60 4. 72 10.93 1. 2 1. 3 4.5 9.55 4.79 10.42 1. 5 1.1 9.0 9.60 4.98 11. 57 1. 6 1. 6 12-18 0007 Discharge 0 17.80 4.70 10.28 1. 4 1. 3

1. 0 17. 60 4.68 10.28 1. 3 1. 3 2.0 17.10 4.68 10.14 1. 4 1.1 12-18 LWS 0647 Intake 0 9.30 4.39 10.36 3.2 1. 9 4.5 9. 25 4.40 11. 01 2.5 1.8 9.0 9.10 4.35 10.50 2.3 1. 9 12-18 0747 Discharge 0 17.40 4.12 10.44 1. 4 1. 7

1. 0 17.15 4.13 10.85 1. 3 1.6 2.0 17.10 4.11 10.83 1. 3 1. 3

TABLE 29 Phytoplankton Entrainment Data; January 15-16, 1976 Date Tide Time Station . Depth Temp. Sal. D. 0. Chl a Total Cells 1975 EDT (m) (°C) 0/00 (mg/1) (µg/1) per ml 1-15 HWS 1135 Intake 0 5.20 1. 74. 11.58 2.7 2.7 4.5 5.15 1. 79 11. 29 2.1 2. 7

• 8.75 5.25 1. 82 11. 27 2.2 2.1 1-15 1235 Discharge 0 13.00 1. 81 11.15 2.7 2.7 1 12.80 1.81 11. 23 2.7 2.6 2 12.80 1. 80 10.99 2.4 2.7 1-15 LWS 1819 Intake 0 6.40 .91 11. 42 4.0 3.9 4 6.25 .94 11. 48 3.6 2.7 8.25 6.20 .98 11.13 4.4 5.3

.w 1-15 1919 Discharge 0 15.25 .90 11.03 2.6 3.3

.:i>

0 1 2

15.10 .88

. 89 11.11 11.38 2.7 3.4 2.6 I 14.90 3.0

°'

w 1-15 HWS 2305 0 1.10 11.50 Intake 5.40 3.3 3.1 4.5 5.00 1. 37 11. 78 3.6 3.8 8.75 5.25 1. 46 11. 70 4.4 4.0 1-16 0000 Discharge 0 13.50 1. 33 11. 23 4.1 4.2 1 13.40 1. 32 11.17 4.2 3.8 2 13.20 1.31 11.38 3.8 4.2 1-16 LWS 0621 Intake 0 4.00 1. 31 12.39 5.9 5.0

4. 25 4.95 1. 55 11. 36 6.5 5.2 8.5 5.00 1. 55 11.42 5.9 5.7 1-16 0728 Discharge 0 13.15 1. 46 11.01 5.9 4.6 1 13.00 1.45 11. 78 4.7 6.0 2 12.90 1. 45 11. 78 6.5 6.4

e TABLE 30 Vertical Phytoplankton Distribution Data; April 17, 1975 Station Time Depth Temp Sal. D.O. Secchi Chl a Total Cells (EDT) (m) (OC) (o/oo) (mg/1) Depth (cm) (µi/1) per ml DWS 1046 0 11.10 2.85 9.7 50 1.5 1. 6 300 300 1 11. 20 2.89 9.8 1. 9 1. 9 300 400 2 11. 40 2.98 10.0 1. 6 1. 7 400 250 Intake 1123 0 11. 95 2.23 9.8 30 2.4 2.3 300 400 4 12.00 2.32 9.7 2.6 2.7 300 450 8 12.10 2.46 9.9 2.8 2.6 550 350 HPE 1 1154 0 12.15 1. 06 9.9 25 2.2 2.4 150 200 2.5 12.15 1. 07 9.9 2.2 2.3 150 200 5 12.35 1. 09 10.0 2.4 2.7 100 250

.l,..)

0 HPE 2 1253 0 11. 85 . 86 10.0 25 2.0 2.0 250 150 I 2 11. 70

• 90 9.9 1. 9 2.1 200 250 0\

+"' 4 11.90 .92 9.8 2.1 2.0 150 150 HPS 1321 0 13.35 1.11 9.8 28 2.0 1. 6 150 350 2.5 13. 00 1.10 10.0 3.2 2.8 150 250 5 13.05 1.10 9.9 3.0 2.3 100 150 HPN 1349 0 11. 95 .61 9.9 26 1. 6 1. 8 200 250 1 11.85 .61 10.0 1. 6 2.6 250 250 2 11. 50 . 65 9.9 1.9 1. 9 150 350 HPW 2 1418 0 12.60 .49 10.0 25 2.2 2.1 150 200

1. 75 12.40 .50 9.8 1. 8 2.4 200 150 3.5 12.20 . 50 9.7 2.7 3.0 300 150 HPW 1 1445 0 15.40 1. 40 10.1 33 1. 8 2.0 250 300

.5 15.25 1.40 9.7 1. 7 2.3 150 200 1 15.30 1. 41 9.7 2.0 2.2 150 250 Discharge 1525 0 21. 40 2. 72 9.8 32 2.3 2.2 250 300

1. 25 21. 40 2. 72 9.8 2.3 2.4 400 250 2.5 21. 40 2. 71 9.7 2.2 2.3 450 300

TABLE (cont.) 30 Vertical Phytoplankton Distribution Data; April 17, 1975 Station Time Depth Temp. Sal. D.O. Secchi Chl a Total Cells (EDT) (m) (OC) (o/oo) (mg/1) Depth (cm) (µg/1) per** ml CBE 1550 0 13.90

• 59 9.5 29 1-.6 1-.4 200 250

.5 13.40 .55 9.9 1. 5 2.0 500 150 1 13.25 .53 9.7 1. 6 1. 4 200 200 CBC 1618 0 12.60 . 48 9.8 29 2.2 2.3 200 250 2 12.45 .47 9.8 3.0 2.7 200 100 4 12.40 .46 10.0 5.6 4.4 150 300 JI 1649 0 11. 85 .19 9.8 23 1.1 2.4 200 150 4 11. 70 .19 9.8 3.7 3.7 250 200 8 11. 70 .19 9.9 5.8 6.2 450 150

.w

.0

~

I

°'

Vl

TABLE 31 Vertical Phytoplankton Distribution Data; July 17, 1975 Station Time Depth Temp. Sal. D.O. Secchi Chl a Total Cells (EDT) (m) (OC) (o/oo) (mg/1) Depth (cm) (µg/1) per ml

. I DWS 0835 0 26.35 .56 7.07 51 2.8 5.0 2200 1600 1 26.30 . 57 6.95 3.5 5.1 1250 2100 2 26. 25 .80 6.97 2.4

, 2.5 600 450 Intake 0958 0 27.35 1. 02 7.56 34 5.1 4.9 850 1000 3.5 27.25 1.01 6.73 4.2 5.4 850 950 7 27.15 .97 7.38 5.2 4.3 1000 1100 HPE 1 1123 0 27.35 . 53 6.32 40 4.4 4.9 700 900 2.5 27.45 .54 6.44 5.4 2.4 450 500 5 27.60 .57 6.42 7.7 1. 7 600 350 v.)

0 HPE 2 1237 0 26.95 .27 5.94 33 4.0 3.4 700 700

i,.

I 1. 75 27.00 . 26 5.65 7.0 5.2 700 450 3.5 27.15 .27 5.55 7.8 8.2 600 700

°'

°'

HPN 1318 0 28.00 .47 6.52 62 7.8 8.2 2450 3200

.6 27.15 . 46 6.12 8.3 9.2 2300 1950

1. 25 27.25 . 44 6.22 4.9 6.5 3100 1800 HPS 1358 0 30.15 . 63 7.11 37 4.2 2.4 1150 1000 2 30.00 .61 6.85 2.8 4.8 1250 1350 4 30.00

• 60 6.65 3.6 4.2 1400 1550 HPW 2 1422 0 26.60 .10 5.82 38 7. J 7.8 1100 850

1. 5 26.75 .10 4. 72 6.1 7.7 1150 700 3 27.20 .10 5.00 11. 2 14.9 850 800 HPW 1 1508 0 31.00

• 72 6.32 48 3.3 3.8 1050 llOO

.5 31.05 .73 6. 71 5.6 3.7 llOO 1400 1 30.95

• 72 6.81 3.2 3.2 950 ll50

TABLE (cont.) 31 Vertical Phytoplankton Distribution Data; July 17, 1975 Station Time Depth Temp. Sal. D.O. Secchi Chl a Total Cells (EDT) (m) (OC) (o/oo) (mg/1) Depth (cm) (µg/1) per ml Discharge 1552 0 36.40 1. 03 6.39 35 3.4 3.9 650 1000 1 36.20 1.06 6.41 4.0 3.8 650 550 2 36.45 1. 05 7.01 4.1 4.3 650 500 CBE 1624 0 30.15 . 56 6.86 48 10.4 10.4 17150 13650

.5 29.85 .56 8.46 8.1 7.7 12100 8600 1 29.60 .54 8.34 7.6 4.2 11450 7100 CBC 1703 0 26.60 .10 5.48 50 3.8 7.6 850 800

1. 5 26.55 .10 5.50 4.0 5.6 850 650 3 26.45 .10 4.60 5.4 5.0 550 550

.w 0 JI 1735 0 26. 50 . 09 5.21 54 4.6 2.6 650 750 I 4 26.40 . 08 5.47 4.4 4.6 1000 1000 C]\

-...J 8 26.20 .08 4.96 8.1 9.6 900 500

TABLE 32 Verd.cal Phytoplankton Distribution Data; November 3, 1975 Station Time Depth Temp. Sal. D.O. Secchi Chl a Total Cells (EST) (m) ( Cc) b/oo mg/1 Depth (pg/1) per ml (cm)

DWS 0820 0 15.60 1.18 7.87 37 0.6 1. 6 1100 750

1. 25 15.80 1. 69 7.87 1.1 1. 0 650 550 2.5 15.90 2.04 7.97 1.0 1.3 350 450 Intake 0921 0 16.10 1. 90 8.34 31 2.6 2.7 900 650 4.5 15.95 2.07 8.07 3.0 2.8 1000 900 9.0 15. 75 2.22 8.42 2.5 3.0 650 700 HPE 1 1011 0 16.15 1. 88 8.01 31 2.1 4.4 700 500 2 16.15 1. 90 7.93 4.9 5.4 300 900 4 16.25 1. 92 8.07 4.9 7.1 600 450 HPE 2 1101 0 16. 25 2.61 8. 21 39 2.7 2.0 400 550 2.5 16.15 2.61 8.13 6.4 4.7 700 300 5 16.30 2.61 8.27 6.6 7.5 600 550 RPS 1153 0 16.80 1. 93 8.36 36 1. 4 1. 6 1250 1200 2.5 16.50 1. 93 8.19 2.1 2.3 1300 700 5 16.65 1. 90 8.13 1. 9 1. 4 1000 800 HPN 1230 0 16.35 .56 8.36 58 2.5 2.8

.75 16.15 .55 8.34 2.7 2.9 1.5 16.00 .56 8.56 3.9 4.0 HPW 2 1400 0 16.45 1.17 8.19 37 2.9 .1. 9

1. 5 16.40 1.18 8.27 2.4 2.6 3 16.55 1.19 8.60 2.4 2.6 HPW 1 1437 0 19.80 1.42 8.56 53 1.1 1.2

.5 18.45 1. 21 8.48 1. 0 1.3 1 18.50 1. 25 8.76 2.7 1.1 Discharge 1540 0 22.45 2.58 7.97 37 3.0 2.3 1 22.45 2.61 8.27 2.1 2.7 2 22.50 2.64 8.54 3.0 2.2 CBE 1617 0 15.60 .28 8.78 57 1. 4 1. 9 1 15.60 .31 8.56 1. 2 1. 8 2 15.80 .32 8.97 2.3 1.4 CBC 1657 0 16.20 .36 8.40 36 2.6 2.5

1. 5 16.20 .36 8.17 2.7 3.8 e JI 1743 3

0 16.25 15.70

.36

.16 8.27 8.36 36 4.3 2.4 3.0 4.3 3.75 15.70 .16 8.36 2.9 4.7 7.5 15.65 .17 8.46 6.3 10.8 3.0.A-68

TABLE 33 e Diel Phytoplankton Data, HPW 2; May 5-6, 1975 Date Tide Time Depth Temp. Sal. D.O. Secchi Chla Total Cells 1975 EDT m oc 0/00 . mg/1 Depth cm µg/1 per ml 5-5 ebb 1249 0 17.55 . 474 8.45 32 2.4 4.3

1. 5 17.60 .474 8.33 5.1 2.5 3 17.60 . 480 8.43 4.8 3.7 5-5 ebb 1549 0 17.20 .101 8.17 38 3.3 2.0

1. 5 17.25 .101 8.03 1.9 1.8 3 17.35 .104 8.03 3.0 3.0 5-5 flood 1830 0 18.85 . 690 8.45 32 2.7 3.8

1. 75 18.75 .665 8.33 2.3 3.1 3.5 18. 80 .629 8.23 5.6 6.8 5-5 flood 2145 0 17.40 .632 8.43 2.1 2.4

1. 75 17.35 .627 8.53 2.5 2.5 3.5 17.30 .635 8.45 1.9 2.3 5-6 ebb 0032 0 17.25 . 464 8.35 3.0 3.2

1. 75 17.20 . 469 8.41 3.1 4.0 3.5 17.10 .477 8.37 2.3 3.5 5-6 ebb 0353 0 17.00 .118 8.03 3.9 3.6

1. 75 16.90 .116 7.84 3.8 5.6 3.5 16.80 .116 8.01 5.7 3.8 5-6 LWS 0635 0 17.00 .108 7.94 37 1. 9 3.7

1. 75 16.90 .106 8.07 2.9 2.2 3.5 16.75 .106 7.88 2.6 1.8 5-6 flood 0933 0 18. 35 . 657 8.25 34 2.8 1.9

1. 75 17. 95 .640 8.43 3.6 2.5 3.5 17.95 . 649 8.23 4.0 2.4 3.0.A-69

TABLE 34 Diel Phytoplankton Data, CBC; July 22-23~ 1975 eDate Tide Time Depth Temp. Sal. D.O. Secchi Chl a Total Cells 1975 EDT m oc 0/00 mg/1 Depth µg/1- per ml cm 7-22 flood 1245 0 30.35 .152 6.40 38 10.0 6.7

1. 25 28. 60 .157 5.96 4.2 3.0 2.5 28. 80 .197 5. 96 5.1 5.1 7-22 ebb 1545 0 29.75 .152 7.29 41 9.0 15.5

1. 25 28.95 .140 6.30 2.3 4.0 2.5 28.75 .130 6.30 3.2 3.9 7-22 ebb 1849 0 28.80 .097 6.32 44 8.4 7. 9

1. 25 28.40 .089 5.84 4.5 4.3 2.5 28.25 .087 5.61 4.0 4.0 7-22 flood 2150 0 30. 80 .160 6.42 5.3 4.2

1. 25 29.75 .128 6.24 6.2 4.6 2.5 28.60 .099 6.12 3.6 3.4 7-23 flood 0047 0 28.40 .157 5.88 3.8 4.7

1. 25 28.35 .150 5.92 3.3 4.6 2.5 28.25 .150 5.80 6.1 4.3 7-23 HWS 0345 0 29.90 .175 6.00 3.7 4.4

1. 25 28.60 .157 5.88 4.5 3.4 2.5 28.20 .155 5.82 3.9 2.5 7-23 ebb 0645 0 28. 55 .123 6. 22 32 5.2 7.1

1. 25 28.50 .108 6.10 4.7 3.8 2.5 28.40 .113 6.26 5.7 5.5 7-23 flood 0943 0 28.40 .089 6.52 48 4.1 5.9

1. 25 28.00 .099 5. 77 5.2 5.4 2.5 28.15 . 089 5.84 4.7 6.4 3.0.A-70

TABLE 35 Diel Phytoplankton Data,CBC; October 22-23, 1975 late Tide Time Depth Temp. Sal. D.O Secchi Chl a Total Cells 1975 EDT m 0 c 0/00 mg/1 depth cm µg/1 per ml 10-22 flood 1220 0 18. 40 .066 7.90 33 3.5 3.3

1. 5 18. 30 .068 7. 72 3.2 3.2 3 18.45 .085 7. 72 5.7 4.2 10-22 flood 1519 0 19.30 .160 8.08 34 4.0 3.8

1. 5 18.80 .140 8.10 2.8 2.6 3 19.15 .142 7.86 2.6 2.1 10-22 ebb 1818 0 19.35 .140 7.82 41 3.7 2.4

1. 5 19.00 .140 7. 92 2.7 2.4 3 18. 90 .135 8.22 3.3 4.8 10-22 ebb 2135 0 18.80 .068 7.22 3.1 3.5 1.5 18.75 . 068 7.50 2.9 3.1 3 18.75 .089 7.54 3.9 3.2 10-23 flood 0029 0 20.40 .318 7.52 1. 9 1. 9

1. 5 19.00 .106 7.72 3.8 3.0 3 18.75 .075 7.26 2.0 1. 9 10-23 flood 0314 0 19.10 .227 7.80 1. 9 2.4

1. 5 19.00 . 227 7.88 1. 9 1. 9 3 19.00 . 227 8.12 1. 5 1. 6 10-23 ebb 0616 0 18. 45 .080 7.26 1. 9 1.6

1. 5 18.40 .082 7.60 2.1 1. 9 3 18.55 .101 7.12 4.1 2.9 10-23 ebb 0920 0 18. 50 .073 7.16 44 2.4 2.2

1. 5 18. 50 .073 6. 72 2.7 2.7 3 18. 60 .073 7.00 2.8 2.2 3.0.A-71

4.0 RADIOLOGICAL ENVIRONMENTAL MONITORING PROGRAM The Surry Station of the Virginia Electric and Power Company is located on a peninsula in the James River, 25 miles upstream of the junction of the river with the Chesapeake Bay. The site is on the west bank of the river in Surry County, Virginia. Two (2) pressurized water reactors are located at the site with a design output of 824.3 MWe (gross) per unit. Cooling water for the condensers is taken in downstream of the site and discharged 5.7 miles upstream of the intake. The flow of the river at the site is complex, influenced by the amount of fresh water run-off, the back-and-forth flow of the tide, upstream flow of more. saline water near the bottom, and downstream flow of less saline water near the top.

During plant operation, low levels of radioactivity are released

• with the cooling water to the James River and with ventilation air to the atmosphere. These releases are limited to the "lowest practicable level" and are measured to assure compliance with NRC Regulations and the Surry Power Station Technical Specifications. The environmental monitoring program provides confirmatory surveillance.

The low levels of radionuclides released to the air and water from Surry Station contribute to the radiation background through both external and internal exposure. The primary modes of external exposure include immersion in a cloud of radioactive gaseous effluent, submersion in water containing radioactive effluent, and exposure from contaminated land surface. The primary modes of internal deposition include inhala-tion of air and ingestion of milk, fish, and shellfish. Dose via the 4.0-1

ingestion pathway is limited by the following site related consider-ations. The vicinity represents a very limited milk shed. During the year, milk was analyzed by gamma spectrometry with a conservative detection limit of 10 pCi/t. In order to completely document this potential path, the 1975 program includes radiochemical analys~s of milk samples for 1-131 content with a sensitivity of 0.25 pCi/t. The saline river is unusable for drinking purposes. Fish and shellfish consumption could become an important pathway in the future when sewage pollution (from cities upstream)'is reduced.

The following shows the manner in which the elements of the Surry Surveillance Program fit together to monitor any radiological impact as a result of operations:

TABLE I Relationship of Sampling and Measurements to Elements of the Radiation Dose Paths Radiation Dose Path Sample and Measurements (Supportive Data)

Air Immersion Thermoluminescent Dosimetry (Air Sampling)

Inhalation Air Sampling (Precipitation, Crop, Soil, and Milk Sampling)

Land Surface Thermoluminescent Dosimetry, Crop and Soil Sampling (Air and Milk Sampling)

Ingestion Fish and Shellfish Fish, Oysters, Clam and Crab Sampling (Water and Silt Sampling)

Water Well, Surface Water, and Precipitation Sampling (River Water and Silt Sampling)

Milk Milk Sampling (Air, Water, Soil and Crop Sampling)

Water Submersion Water Sampling (Silt Sampling) 4.0-2

This report contains data resulting form a radioassy of various samples obtained from the environs of the station. Figure 1 indicates the land based sampling stations while Figure 2 indi-cates James River stations.

Data obtained by Eberline Instrument Corporation (EIC),

a consulting service, is presented for the first and second quarters of this year.

The 1975 program when compared to that presented in the Tech-nical Specifications is redundant in order to maintain the sampling and analytical requirements.

4.0-3

e TABLE II Monitoring or Sampling Locations and Frequencies Air Ambient Well Surface Particulate Radiation Precipitation Milk Water Water Soil Surry Station BW Q M SA A Hog Island Res. BW Q SA Bacon's Castle BW Q SA A Chippokes Creek SA Alliance BW Q A

- Colonial Parkway BW Q M A

,I::-

0 I

,I::- Williamsburg SA Jamestown Q .SA Dow BW Q A Fort Eustj_s BW Q A Newport News BW Q M SA Scotland Q Leehall Q M Routes10-676 Q Smithfield Q M SA

- TABLE III ENVIRONMENTAL MEASUREMENT AND SAMPLE ANALYSIS PROGRAM TyPe Sample . Frequency Analysis Air Particula~e Bi~weekly (VEPCo). Gross Beta (1)

Monthly (VEPCo) Gross Alpha Bi-weekly (EIC) Gross Beta Quarterly (EIC) Gamma Isotopic (2)

James River Water Bi-monthly (VEPCo) Tritium (Salt Water)* Bi-monthly (EIC) Gamma Isotopic (3)

Semi-annual (EIC) Tritium (4)

Well Water Semi-annual (VEPCo) Gross Alpha, Gross Beta and Tritium Semi-annual (EIC) . Gross Alpha, Gross Beta and Tritium Surface Water Semi-annual (VEPCo) Gross Alpha, Gross Beta (Fresh Water) and Tritium Semi-annual (EIC) Gross Alpha, Gross Beta and Tritium Precipitation Monthly (VEPCo) Gross Beta and Tritium Quarterly (EIC) .Gross Beta(5) and Tritium*

TLD Quarterly (EIC) mRem Crops Annually (EIC) Gamma Isotopic and Sr-90 Fowl Semi-annual (EIC) Gamma Isotopic (6)

Fish Semi-annual (EIC) Gamma Isotopic (Catfish & White Perch or Eel)

Oyster & Clam Bi-monthly (EIC) Gamma Iso~opic (6)

Crab Summer months (EIC) Gamma Isotop*ic Silt Semi-annual (EIC) Gamma Isotopic Soil Annually (EIC) Gamma Isotopic Milk Monthly (EIC) Sr-89,90, Calcium, Gamma Isotopic (7),

- *Enriched Tritium 4.0-5 I-131 (8) .

e. e James Fowl River Crops (Coot) Water Silt Oyster Clams* Fish Crab Bacon's Castle A(3)

Hog Island Res. SA Jamestown

.. *BM Newport News BM SA BM Chickahominy BM SA BM Station Discharge BM SA BM Hog Island Pt. BM SA BM Station Intake , BM SA SA SM

~

0 Lawnes Creek

. Deep Water Shoals BM BM J

C\

Point of Shoals *SA*. BM BW-Bi-weekly M-Monthly

_BM-Bi-monthly Q-Quarterly SA-Semi-annually A-Annually A(3)-Annually corn, peanuts, and soybeans SM-SuIIm1er Months (two samplings: July - September)

..-:i*,*

NOTES TO TABLE III

1. Gamma isotopic analysis if gross beta exceeds 10 pCi/M 3 .

2. Quarterly composites of bi-weekly air particulate samples will be analyzed for gamma'emitters in three groups as follows:

Stations 1 &*2 analyzed as one sample Stations 3,5,6,9, & 10 analyzed as*one sample Station 11 analyzed as one sample Strontium-90 determined radio_c:i,iemically if significant amounts of fission products attributable to the Station are detected by the gamma isotopic analysis.

3. Gamma isotopic analysis performed on bi-monthly samples from Stations 1 & 10.

4. Tritium analysis to be performed using the electrolytic enrichment technique on semi-annual composites of bi-monthly samples from Station 1 & 10.

Perform gamma isotopic analysis if gross beta exceeds 5.

15 nCi/M 2 .

e

6. Entire sample analyzed for gamma emitters. Sr-90 to

e. be determined if a significant amount of.fission products attribµtable to the Station are noted in the gamma analysis .

. 7. Milk analyzed by gamma spectrometry with lithium drifted

-germanium detector. Quantitative values for Cs-137 are reported if concentrations exceeds 10 pCi/1.

8. Radiochemical analysis for iodine-131 in milk with a sensitivity of 0.25. pCi/1 ( + 10% counting error or

+ 25% overall error at O.S'pCi/1) at time of collection.

4.0-8

SUMMARY

Air Particulate Samples Gross beta concentrations in air particulate samples continued to decrease from the expected spring maximum which was 1.6 E-01 v picocuries per cubic meter during April, 1975. During the second half.of* 1975, chronological averages of the individual stations ranged from 1.6 E-02 to 5.3 E-02 picocuries per cubic meter.

Early in the fourth quarter a rash of mechanical problems became apparent and by November extensive maintenance included replacement of air sampling pumps at suspect 1.ocations as well as changing various components to reduce apparent leaks in the sampling trains.

The latter appears to have been the greatest single problem since levels were artificially low and many below analytical sensitivity.

Visible inspection of the filters showed notably reduced dust loading and, in some cases, no dust zone was discernible.

Gross beta concentrations that were measurable showed relatively low levels in comparison to previous surveillance. Average concentrations at each location during the second half of 1975 indicated 2.9 E-02 picocuries per cubic meter with a range of *from 1.3 E-02 to 4.9 E-02 picocuries per cubic meter.

Gamma spectrometry of composited filters yielded low level, but measurable, concentrations of fission and activation products.

They*are summaried by quarter below:

Third Quarter, 1975 3

Bacon's Castle, Alliance, Mn-54 1. 2 + 0.5 fCi/M Colonial Pkwy. , Dow, &

Fort Eustis.

Ce-144 7.9 + 5.3 Newport News Ru-103 3.5 + 2.8 4.0-9

Fourth Quarter, 1975 Surry Station &

• Mn-54 2.3 + 1.8 fCi/M 3

,. e Hog Island Reserve Co-58 Co-60 Cs-137 8.2 + 2.7 s*. *2 + 2.3 2.0 + 1.8 Bacon's Castle, Alliance Co-58 . 1. 5 + 0.7 Colonial Pkwy., Dow,

& Fort Eustis Newport News Cs-137 4.6 + 2.8 The fourth quarter cesium-137 concentrations at Newport News and at Surry-Hog Island are not distinct from levels attributable to world wide fallout. Cerium-144 in the five station composite fro~ the third quarter*is likely to be from more recent fallout since measurable levels were experienced during the first half of 1975. The ruthenium-103 in the third quarter composite from Newport News is not attributed to Surry Sta.tion since it is a single indication at the sampler most remote to the power plant.

The activation prod:ucts that could be attributed to Surry effluent include the manganese-54~ and cobalt's-SB and 60.

Selecting the highest concentration of each of the three and comparison to Column 1 of Table II of Appendix B of 10 CFR 20 (Non-restricted areas)

Fraction of Table II IsotoEe Concentration of AEEendix B Mn-54 2. 3 + 1. 8 fCi/M 3 2.3 E-06 Co-58 8.2 + 2.7 4.1 E-06 Co-60 5.2 + 2.3 1. 7 E-05 Ambient Thermoluminescent Dosimetry Presentation of the significance of environmental dosimetry measurements was altered beginning in 1975. Improvement of the dosimetry service through a new annealing procedure that reduced post-annealing delay and, also through more.rigorous pre-4.0-10

selection, improved the quality of the data. Even through care is taken in control dosimeter storage at Surry Station, a e slightly. elevated ambient dose rate has usually resulted in measurably lower dose rates at several field locations. This.

was not true during the Fourth Quarter of 1975. For these reasons, the recent method of comparison has included use of the lowest field locations as the "control" dosimeter with all other s~ations compared to this level. For all of 1975, the "control" locations and the associated dose rates have been First Quarter Second Quarter

1. 2 mrem/wk at 0. 7 mrem/wk at Bacons Castle Rts10-676 Colonial Pkwy.

(Control was Rts10-676, Dow 2.2 mrem/wk) (Control was

1. 1 mrem/wk)

Third Qua'.rter Fourth Quarter 0.5 mrem/wk*a.t 0.6 mrem/wk at Bacon's Castle Alliance Alliance (Control was (Control was 0.4 mrem/wk) 0.7 inrem/wk).

An overall comparison, on that basis, is given in Table IV.

• The highest dose rate was apparently at Surry Station during the fourth quarter with 5. 7. mrem/wk indicated. The dosimeter station is on site and does not constitute exposure to off-site populace. Due to the proximity to the plants, the dose could be due to direct gamma shine. The closest in off site location is on Hog Island Reserve. In comparison to the lowest ambient measurements, this station indicated approximately 15.6 mrem/yr with an average two.sigma error term of 53 percent. Compared to

~ its own lowest net dose as a control, Hog Island Reserve indicates an* elevation of 5.8 mrem/yr.

4,0-11

- FIGURE 1

\

I~ - FIGURE 2 e

TABLE IV

.NET AMBIENT DOSE RATES USING LOWEST FIELD STATION FOR CONTROL FOR THE FOUR QUARTERS OF 1975 (mrem/wk)

Station First Quarter Second Quarter Third Quarter

• Fourth Quarter Control 1.0 ( + 27%) 0. 4 ( + 35%) 0.2 ( + 20%) Less than o. 2 < + 73%:

Surry Station 1.6 ( + 19%) 0.3 ( + 47%) 0.4 ( + 22%) 5.1 ( + 63%)

Hog Island Reserve 0.1 ( + 64%) O.z ( + 27%) o:4 < + 67%)

Bacon's Castle O.Q ( + 150%) 0 0.3 ( + 63%)

0

....I Alliance  ;,l 0.1 ( + 120%) 0 0 N

Colonial Pkwy. .~1 0. 0 ( + 120%) 0.5 ( + 22%) 0. 2 ( + 79%)

Dow .J O.Q_ ( + 80%) 0.1 ( + 33%) 0.1 ( + 85%)

Ft. Eustis 0.1 ( + 49%) 0.2 ( + 90%) 0.2 ( + 20%) 0.3 ( + 75%)

Newport News 0.3 ( + 80%) o. 3 ( + 60%) 0.2 ( + 11%) 0.1 ( + 86%)

Smithfield 0.4 ( + 50%) o. 3 ( + 17%) 0.3 ( + 21%) 0.4 ( + 95%)

0.( ( + 98%) 0.1 ( + 30%) 0.2 ( + 20%) 0.2 ( + 103%)

Scotland Warf Jamestown 0.2 ( + 100%) 0. f* ( + 20%) 0.1 ( + 20%) 0.1 ( + 95%)

Lee Hall O.S ( + 37%) o.~ < + 20%) 0.4 ( + 17%) 0.5 ( + 95%)

Routes10-676 0 0 0. 1 .< + 11%) . 0.1 ( + 77%)

NOTE: Error terms represent 95 percent confidence and include propogation of both the noted standard deviation within a specific packet (5 chips) and that associated with the lowest field station used as the control.

The dosimeters locat*ed at Alliance and at the intersection of routes 10 and 676 indicated consistently low

• e ambient dose rates. Highest noted ambient dose rates at off

• site locations~ compared to the lowest ambient.stations, were at Lee Hall and Smithfield. Due to the locations of the dosimetry stations,

• the relative higher and lower. _dose rates are related to the natural radiation background rather than any contribution, or lack of same, from Surry Station.

Precipitation Samples

• Precipitation composite samples for the third quarter yielded the following:

Newport News Surry Station

. 2 Gross Beta 3 . 1 + C. 1 nCi/M 2.8 + 0.1 nCi/M2 Tritium 53 + 35 75 + 50 Gross beta levels during the first.half of 1975 averaged 2 2 5.7 nCi/M at Newport News and 7.6 nCi/M at Surry Station.

2 Previous tritium data showed a single high value of ll4 nCi/M at Surry for the secon4 quarter of 1974. Other values for

. 2 tritium have ranged from less than detectable to 70 nCi/M.

The 1974 averag~s were 43 nCi/M2 and 70 nCi/M2 at Newport News and Surry Station respectively.

Due to an error in sample identity, by Eberline, the ..

fourth quarter precipitation composite was first identified as a James River water sample and gamma spectrometry was*

performed. The built in system of cross checks resulted in identification of the error however the entire sample had been evaporated to dryness by that time. The remainder of that e '

sample at Surry had also been taken to dryness therefore the 4.0-13

tritium analysis could not be performed. Results of gannna spectrometry of* the Surry Station sample showed the predominant activity was due to naturally occurring berylli~-7. For purposes of comparison to previous gross beta measurements, the following were observed in the Surry Station prec*ipitation sample:

Co-58. 0.65 + 0.33 nCi/M2 Co-60 0.31 + 0.25 Cs-137 0.45 + 0.37 Ce-144 2.1 + 1.6 Approximate Total 3.5 nCi/M2 This is roughly comparable to the previous beta measurements .

although it is important to note that counting efficiency and beta self absorption for gross beta determinations presumes cesium-137 beta energies. Further, naturally occurring potassium-40 is expected to contribute some beta activity however less 2

than 5.1 nCi/M was present relative to three standard deviations above the compton continuum (and background) for that sample.

The sample from Newport News showed only cobalt-58 to be measurable with 0.22 + 0.18 nCi/M2.

Milk Samples

• During the second half of 1975, 29 milk samples were collected from* five locations with one doub.le collection at Epps (10-1-75) and at Lee Hall (10-2-75) for quality control purposes. All samples were analyzed radioch_emically for low levels of iodine-131 with no positive indications. Analytical e sensitivity for this group was approximately 0.1 pCi/1 at three 4.0-14

standard deviations with the worst radiochemical recovery yielding less than 0.28 pCi/1.

e

• Radiochemical analyses for strontium showed several

_samples with-strontium-89 activity:

Location Date Sr-89 (pCi/1)

Lee. Hall 7-15-75 '* 2. *g + 2. 0 Colonial Pkwy. 7-15-75 -16 + 2 Judkins 10-21-75 6.8 + 2.3 Epps 11-18-75 4.9 + 2.5 Judkins 11-18-75 5.4 + 2.6 These indications of Sr-89 activity in 5 of 29 samples are .

somewhat unusual. During the first half of 1975 only one .sample may have contained strontium-89; the l-2*7-75 collection from Colonial Parkway indicated 2. 3 + 2. 3 pCi/ 1. Due to the analytical method, it is possible for some strontium-90 activity to be calculated to be strontium-89 activity, especially with low levels such as in the Lee Hall collection on 7-15-75. The significances, in terms

/

of dose committment, can be understood*by examining the highest concentration in a single saple location.

If one presumes the Colonial Parkway level is as ~nalyzed and that the activity is attributable to the Surry Station, an

. adult bone dose committment of 0. 074 mrem is calculat.ed. Presump-tions include a 13 day effective half life demonstrated by the July 15th and August 12th data, consumption of ~,liter per day for the 28 days, and also the dose model given by_ the AEC in Draft Regulatory Guides for Implementation - ALAP LWR Effluent(l).

(1) Numerical" Guides for Design Objectives ~nd Limiting Conditions for OReration to Meet the Criteria "As Low as Practicable- - - Docket No.*RM-50-2 U.S. Atomic Energy Commission, February 20, 1974.

4.0-15

Stroritium-90 concentrations averaged 5.6 pCi/1 in milk

- samples collected during the second half of 1975.

of concentrations was- from 1. 7 + 1. 7 to 12 + 4 pCi/1.

The range Of the

_t;hree samples showing -10 pCi/1 or more, non indicated strontium-89 activity. The latter strontium isotope would be expected to be

• ~ore abundant_ in plant effluent. For historical comparison strontium-90 concentrations ranged from 1.6 to-20 pCi/1 during the second half of 1974 and then from 1.6 to 15 pCi/i during the first half.of 1975. Levels are typical and expected due to old weapons test fallout.

Gannna spectrometry of milk samples showed expected levels of naturally occurring potassium-40. Cesium-137 was measurable in seven of the 29 samples. The seven averaged 14 pCi/1 with a range of from 10 + 9 to 22 + 15 pCi/1. The data are similar to those for previous periods and the cesium-137 is not believed to be plant related. The sample collected at Judkins on 12-9-75 may have contained ruthenium-103 with an indicated 14 + 12 pCi/1. No other fission or activation products were observed through gamma spectrometry.

Well Water Samples The semi-annual well water samples were collected on October 21 and 22, 1975. Gross alpha measurements showed no detectable activity (less than 1.8 pCi/1 at three standard deviations) and gross beta activity was measurable i~ two o:fi'. the four samples:

Jamestown 11 + 6 pCi/1 Bacon's Castle 15 + 6 pCi/1

~ The beta activity is believed to be natural to both sites since previous measurements have indicated beta activity would be present.

4.0-16

Gro~s beta (pCi/ 1)

Jamestown* Bacon's Castle e 1973.lst half 19 + 6

- 5.9

+

-* 4.4 2nd half 8.6 + 4.5 l974 1st half 11 + 5 2nd half .. 17. + *5 1975 1st half 5.6 + 5.1 -- 16 + .5.

Tritium levels remained within those expected due to natural production of the isotope. Concentrations for this period averaged 200 pCi/1 with a range of from 170 + 80 to 230 + 90 pCill.

Surface Water Samples.

Surface water

~*

samples showed no measurable alpha activity (less than 2.4 pCi/1) and two of the four had measurable gross beta concentrations. Chippokes Creek showed 21 + 7 pCi/1 and the Smithfield Reservoir had 7.0 + 5.8 pCi/1 of gross beta activity. Measurable gross beta activity is not unusual at Smithfield through previous sample analyses. The gross beta concentrations are typical in comparison to EPA determinations (1970) from samples from the Kerr Dam in Virginia which ranged from 2 to 31 pCi/1. Tritium levels were typical of naturally occurring levels in surface water.

James River Water Relatively low levels. of .cesium-137 were observed in five of the samples collected during this period. Those five samples averaged 5.1 pCi/1 and ranged from 3.9 + 3.4 to 6.8 + 4.0 pCi/1.

Levels are presumed to be due to world wide distribution of old fall-e out since other.potentially significant isotopes were not observed.

4.0-17

A sing~e sample from Newport News (9-30-75) may have contained

- cobalt-57 with an indicated 6.2 + 4.8 pCi/1.

Enriched tritium analysis of composited samples from

• ~Chickahominy and Newport News showed expected naturally occurring levels of 210 + 130 and 290 +/- 120 pCi/1 respectively ..

• Silt Samples Gamma spectrometry of silt samples collected during September, 1975 showed primarily cobalt-60 and cesium-137.

Co-60 (pCi/kg) Cs-137 (pCi/kg)

Station Discharge 4. 7 + 1.4 E+02 1.1 + 0.2 E+03 Hog Island Point 3. 0 + 1. 2 E+02 5.3 + 1. 4 E+02 Point of Shoals 1. 2 + 0. 8 E+02 7.2 + 1. 7 E+02 Newport ~ews 1. 6 + 1. 0 E+02 8.4 + 2.0 E+02 Chickahominy 1. 0 + 0. 2 E+03 The cesium-137 and cobalt-60 concentrations are notably lower than those of the first half of 1975 and correspond to.averages noted during 1973 and 1974. Cobalt-58 was reportable in a Station Discharge sample (2.3 + 1.3 E+02 pCi/kg) and also at Hog Island Point (1.6 + 1.2 E+02 pCi/kg). The Station Dishcarge sample, collected on September 9, also showed the following radionuclides:

Cr-51 1.7 + 1.4 E+03 pCi/kg Mn-54 1. 6 + 1. 2 E+02 Cs-134 3. 6 + 1. 1 E+02 The Hog Island Point sample also showed antimony-125 with 3.6 +

3.4 E+02 pCi/kg.

e 4.0-18

Oyster Samples A sunnnary of fission and activation products measured e at the three sampling locations is given below:

Point of Shoals**

7-28-75* Mn-54 1.3 + 0.9 E+Ol pCi/kg 9-17-75 Cs-137 ..3. 8 + 2. 3 E+Ol 11 7.S Co-58 2. 8 + 1. 6 E+O 1 Ag-llOm 3.0 + 2.6 E+Ol Deep Water Shoals

. 7-28-75 Co-58 2.4 + 1.5 E+Ol pCi/kg

.cs-137 1. 7 + 1. 7 E+O 1 Newport News 9-29-75 Mn-54

• 1. 8 + 1. 5 E+Ol pCi/kg Cs-137 3~9 + 2.0 E+Ol 11-17-75 Cr-51 . 2. 3 + 1. 4 E+02 Ru-103 1. 8 + 1. 6 E+Ol The concentrations of cobalt-58 and* cesium-137 are comparable to previous sample data. Manganese-54 had previously been observed in a single sample collected from Point of Shoals on 5-18-75 with 1.7 + 1.2 E+Ol pCi/kg. The concentration in the.Newport News sample during the current period.is the first noted at that location. The cesium-137 concentrations above represent a continuation of those observed during the previous year. Since cesium-137 is not increasing*, it is logical to presume that the observed levels are due to the world wide distribution of that isotope; not from Surry Station.

Consumption of 9 kg/yr of oysters containing 18 pCi/kg of manganese-54, 28 pCi/kg of -cobalt-58, 30 pCi/kg of silver-llOm 230 pCi/kg of chrominium-51, and 18 pCi/kg of ruthenium-103, would

- result in an annual total dose conunittment of .03 mrem to the GI-LLI of an adult.

4.0-19

Clam Samples Gamma spectrometry of clam samples showed a number of both fi°ssion and activation products. A summary of isotopes shows:

Manganese-54

• chickahominy 9-17-75 *

• 37 + 16 pCi/kg Cobalt-58 Jamestown Island 7-17-75 22 + 18 pCi/kg Hog Island Point 7-17-75 78 + 20 Station* Discharge 9-15-75 62 + 20 Jamestown Island 9-15-75 41 + 25.

Hog Island Point 9-lr-75 79 + 30 Lawnes Creek 9-17-75 33 + 23 Jamestown Island 11-17-75 36 + 15 Hog Island Point 11-17-75 100-+ 20 Station Discharge 11-17-75 170 + 40 Chickahominy 11-17-75 74 +-30 Cobalt-60' Station Discharge 7-17-75 48 + 16 pCi/kg Jamestown Island 7-17-75 . 23 + 14 Hog Island Point 7-17-75 85 + 21 Station Discharge 9-15-75 42 + 18 Jamestown Island 9 75 49 + 24 Hog Island Point 9-17-75 72 + 34 Chickahominy 9-17-75 32 + 26 Station Discharge 11-17-75 100-+ 30 Hog Island Point 11-17-75 43 +-21 Ruthenium-103 Lawnes Creek 11-18-75 12 + 11 pCi/kg Iodine-131 Jamestown. Island 7-17-75 28 + 17 pCi/kg Station Discharge 9-15-75 340 + 60' Jamestown Island 9-15-75 220 + 80 Chickahominy 9-17-75 330 + 80 Cesium-134 Station Discharge 9-15-75 34 + 20 pCi/kg Chickahominy 9-17-75. 30 + 24 Jamestown Island 11.:.11-75 21 + 14 Station Discharge 11-17-75 30 + 27 4.0-20

Cesium-137 Station Dishcarge 7-17-75 44 + 16 pCi/kg Jamestown Island 7-17-75 37 + 19 Hog lsland Point 7-17-75 31 + 19 Lawnes Creek 7 75 28 + 21 Station Discharge 9-15-75 65 + 22 Jamestown Island 9-15-75 35 + 34 Station Discharg~ 11-17-75 99 + 29 jamestown Island 11-17-75 19 + 9 Lawnes Creek 11-18-75 . .19 + 14 Chickahoininy. 11°-17-75 37 + 21 Barium-140 Station Discharge- 9-15-75 15 + 6 pCi/kg Lanthanum-140 Station Dishcarge 9-15-75 95 + 6 pCi/kg Chickahoininy 9-17-75 68 +-*49 Cerium-144 Station Discharge 7-17-75 160 + 160 pCi/kg

• 9-15-75 220 + 160 tn order to assess the significance of the above concentrations one can construct a*"conservative clam" by utilizing the average (or single value) of isotopes found at the various collection locations in order to calculate the corresponding dose. Such a clam possess the following concentrations:

Conservative Clam Mn-54 37 pCi/kg Co-58 69 Co-60 55 I-131 230 Cs-134 29 Cs-137 41 Ba-140 220 La.:.140 120 Ce-144 190

One can tabulate a dose committment presuming the concentration above remained constant for one year and that an e adult would consume 9 kg of oysters:

.)

Dose Committment (mrem)

Isoto:ee Body GI-LLI Thyroid Bone Mn-54 2.9 E-04 4.6 E-03 Co-58 1. 0 E-03 9.4 E-03 Co-60 2.3 E-03 1. 9 E-02 I-131* 1. 7 E-03 7.9 E-04 9.6 E-01 2.0 E-03 Cs-134

• 2.6 E-02 6. 7 E-04 1. 4 E-02 Cs-137 2.1 E-02 7.6 E-04 2:3 E-02 Ba-140 2.6 E-03 7.9 E-02 4.0 E-02 La-140 3.6 E-07

• 1. 0 E-01 2.7 E..;06 Ce-144 3.4 E-05 2.9 E-01 5.6 E-04 Totals 5.5 E~02 5.0 E-01 9.6 E-01 7.9 E-02

• I-131 dose estimate based upon consumption of 2.25 kg since only detected.in July and September samples.

Crab Samples Two crab samples were collected during the second half of 1975 with only natu~ally occurring,potass-ium-40 and expected concentrations of cesium-137. The latter appear typical to world wide distribution of that isotope.

Fish Sample

• A fish sample was collected from near the Station Intake qn 8-20-75. Natural potassium-40 was documented and the cesium-137 concentration showed no notable plant contribution.

Soil Samples Six soil samples were collected on August 12th. Strontium-90 was detectable in two of those samples:

Location Sr-90 Fort Eustis 3.4 + 2.S* E+02 pCi/kg Bacon's Castle 2. 6 + 2. 4 E+02 e Both results are not unusual for strontium-90 concentrations in soil due to old weapons tests. The closest in location, 4.0-22

at Surry Station, indicated less than 3.5 E+02 pCi/kg at 99.7%

eonf idence.

e Gamma spectrometry showed measurable levels of a ntDilber of naturally occurring and man-made radionuclides. The sample from Surry Station, as can be expected, showed the greatest variety:

Surry Station Isotope

• Concentrations (pCi/kg)

Mn-54 2.1 + 1. 6 E+02 Co..,;60 6.8 + 2.6 E+02

• cs-134 1. 4 + 0. 3 E+03 Cs-137 3.5 + 0.4 :E+03 For purposes of comparison, the 1974 soil samples showed no detectable manganese-54, cobalt-60, or cesium-134 .. Cesium-137 indicated less than 110 pCi/kg. There would appear to be a build-up a*t Surry Station however some variability can be expected due to the-variation in specific sampling location.

Cesium-137 was detectable in all of the other five smaples.

The average was 9.4 E+02 pCi/kg and the range was from 2.1 + 1.7 E+02 to 1.6 .-+ 0.3 E+03. pCi/kg. While an apparent increase, these

• . levels have been observed at other locations in the south-east.em United States and the apparent variation *could be due to the variability in sampling locations. In addition, a single sample, from Colonial Parkway, indicated cobalt-SB with 120 + 80 pCi/kg.

Two locations, Fort Eustis and Dow, indicated cerium-144 at

• 1.7 + 1.6 E+03 pCi/kg and 4.5 + 2.0 E+03 pCi/kg respectively.

Crop Samples Gamma spectrometry of crop samples ~ollected during the second e* half of 1975 indicated no activity that could be attributed to Surry Plant operations. Cesium-137 was quantitated in a single pea-nut sample collected at Bacon's Castle on 10-22-75 wi"th*

84 +/- 82 *pci/kg.

4,0-23

Strontium-90 was measurable in that.peanut sample with 69 +/-

31 pCi/kg and the soybean sample collected on 11-6-75 at Bacon's Castle yielded 130 + 30 pCi/kg.

Fowl Sample The coot normally collected on Hog Island Reserve was not available and a crane was collected as.~n alternate. Gamma spectrometry of the flesh showed no measurable radionuclide concentrations.

Conclusion The environmental surveillance program, conducted by VEPCo.

at its Surry Power Station, continued to document both natural and plant related radionuclides during the second half of 1975.

,Gross beta concentrations in air particulate samples remained relatively low* with an average of 2.*9 E-02 pCi/M 3 for the entire network. Gamma spectrometry *of quarterly composites

• permitted documentation of extremely low concentrations of several fission and activation products. The single composite showing the greatest variety of these radionuclides was that from* *the. fourth quarter for filters from both Surry Station and.Hog Island Reserve with:

Mn-54

• 2.3 + LS fCi/M 3 Co-60

• 5.2 + 2.3 fCi/M 3

Co'."'58 8.2 + 2.7 Cs-137. 2.0 + 1.8 Environmental _Dosimetry yielded measurements typical to previous data with the exception. of the fourth quarter dosimeter at Surry Station . . While not an off-site dose, the measurement yielded 5.1 mrem/wk and is believed to be due to direct gamma shine e rather than noble gas immersion.

4.0-24

Precipitation samples were typical of previous data.

4t Through temporary mistaken sample identity, tritium measurements could not be made during the fourth quarter. Concomitant to the mistaken identity, additional information was afforded through gamma spectrometry of the composites. Beta emitters identified in the Surry Station samples showed low levels of cobalts-58 and 60, cesium-137, and cerium-144.

Radiochemical analysis of milk samples showed no detectable iodine-131. Strontium-89 was measured in 5 of the 29 samples; an ~nalysis of the highest concentration showed a bone dose committment of approximately 0.07 mrem. Strontium-90 concentrations were essentially the same as those of previous years with no indication of any plant contribution. Cesium-137 was measurable in seven of the 29 samples. with those averaging 14 pCi/1. The cesium data are similar to those of previous years and are typical of the world wide distribution due to old fallout.

Well water, surface water, and James River water samples showed no activity that could be expected from a nuclear power plant. Five of the James River Water samples had measurable cesium-137 with those giving an average of 5.1 pCi/1.

Silt samples continued to exhibit levels of fission and activation products with primarily cesium-~37 and*cobalt-60.

The average concentrations of the two were lower than those measured during the first half of 1975 and similar to measurements made during 1973 and 1974. The single sample from the Station

~ Discharge area had low, but measurable additional quantities of

.chromium-51, manganese-54, cobalt-58, and cesium-134.

4,0-25

Oysters and clams contained the expected variety of fission and activation products. A conservative dose committment 4t estimate was made in both cases. Specific radioisotop~s in the oysters_ constituted a dose primarily to the GI-LLI with the resultant committment calculated to be 0.03 mrem based upon continuous consumption for one year. A similar analysis of clam sample concentrations yielded a GI-LLI committment of 0.5 mrem and a thyroid committment of 0.96 mrem. Bone and whole body dose cominittments were also calculated and were less than those above.

Soil samples showed some measurable plant contribution with Surry Station sample showing the greatest array of fission and activation products including manganese-54, cobalt--60,

• cesium-134, and cesium-137. The air particulate filters composited from Surry Station and, Hog Island Reserve, during the.

fourth quarter, did not show cesium-134, but did show cobalt-58.

The other three radionuclides were measured in air and soil.

The crops and fowl samples collected during this.period did not indicate activity attributable to plant effluent.

e 4.0-26

ANALYTICAL PROCEDURES Air Particulate Gross alpha and gross beta radioactivity measurements are made utilizing*a Beckman Widebeta II low background (anti-coincidence proportional) counter. The minimum detectable levels (99.7% confidence) are approximately 0.24 pCi per sample for alpha particles and 0.80 pCi per .sample for beta particles._

Air particulate samples are mounted in two inch planchets and counted directly.

Gamma spectrum analysis utilizes a lithium-drifted 3

germanium aetector with a sensitive volume of 55 cm and a thin aluminium window. The detector is housed in a graded lead shield with an internal volume of eight ft 3 ; six inches of lead are at the.bottom with four inches of lead on all sides and on top. The analyzer system is a Nuclear Data 4420 and ND812 computer housing a 20K memory for acquisition, storage, and manipulation of spectra and computer programs.-

Th~ overall system has a resolution of 2.2 ke~ for the 1170 kev peak of cobalt-60 with a peak to compton ratio of 32:1.

Air particulate composites are fitted into a Petri dish and analyzed directly.

Ambient Radiation Thermoluminescent dosimeters of lithium flouride (TLD-100) are used to indicate ambient background radiation as e well as noble gases such as xenon.* The chips are pre-4.0-27

V selected by laboratory irradiation and measurement with criterion of+ 4%. At low dose levels subsequent response can vary with+ 6% typical and with a range of less than+

10%. A standard annealing cycle is used with one hour at 400° C. Calibration of the overall system includes use of ionization chambers as directly received from calibration by the National Bureau of Standards .. Each annealing batch includes a paqket for quality control comparison. The dose reported is that received between annealing and reading unless otherwise directed.

Well Water and Surf~ce Water These water samples are treated identically as the precipitation samples. The major factor influencing the data is the fraction of the total sample analyzed.

Fowl The single coot sample analyzed semi-annually is analyzed by high resolution gamma spectrometry on the Ge-Li system.

Following separation of the flesh from feathers, bone and other organs, the sample is ground and dried. The minimum detectable activities are essentially equal to those of other dried organic materials.

4.0-28

y Silt and Soil Samples Soil and silt samples are analyzed in an identical manner. Samples are dried and seived through a number 11 U.S.A. Standard Testing Seive to remove pebbles and other foreign matter. *The samples are tumbled.. to provide uniform mixing and aliquots of approximately 100g are analyzed by high resolution gamma spectrometry. Representative sensitivities for various isotopes are Zr-95 0.1 pCi/g Nb-95 0.1 pCi/g Cs-137 . 0.1 pCi/g Pb-214 1. 0 pCi/g Bi-214 1. 0 pCi/g Ra-226 9.0 pCi/g James River Water .

Water samples are analyzed by high resolution gamma spectrometry and als*o by an enrichment procedure for tritium.

The gamma spectrometry is performed by slowly drying a one liter aliquot and counting the residue. The tritium aliquot is electrolytically enriched before liquid scintillation counting and has a sensitivity of 90 pCi/1. This sensitivity is more than adequate to document equilibri\,Ull concentration due to world-wide environmental inventories.

4.0-29

• _ Aquatic and Marine Organisms e *oysters and clams are analyzed by high resolution gamma spectrometry following grinding and drying. Only the edible portion of the mollusks are analyzed. Fish entrails are removed and the remainder submitted. to.pressurized steam to allow segregration of bone and flesh. The resultant sampl~

weights are on ~he order of 10-20 grams. Typical resultant sensitivities are:

Zr-95 0.8 pCi/g Nb-95 0.8 pCi/g Sb~l25 1.1 pCi/g

. Cs-137 0.4 pCi/g Ce-144 5. 0 pCi/g Ra~226 16 .. 0 pCi/g Precipitation

.An aliquot of the composite is counted directly for tritium activity via liquid scintillation. The minimum detectable activity is 1.0 pCi/ml. Gross beta analysis* is performed by drying an aliquot, in a planchet. The dried planchet is counted directly in the Widebeta II with a minimum detectable activity of 0.58 pCi per planchet.

The fractions of the samples analyzed are then related to the total precipitation collected and the area of the sample collector with units reported as nCi/M 2 .

e

• 4.0-30

Milk Samples

~ Mi~k samples are analyzed for gamma emitters by high resolution gamma spectrometry. Minimum detectable activities are id;;ntical to those for water samples. Samples are also

~nalyzed for Sr-90 and calcium.

The strontium procedure includes separation by ion exchange with subsequent dried eluant counted on the Widebeta II system. An.. initial count with an additional count several days later, identifies the Y-90 in-growth. The sensitivity for Sr:.?..O is approximately 2 pCi/1. Stable calcium is measured by a standard ti,tration with a sensitivity of 1 mg/L for dosimetric techniques. .

Milk samples are analyzed for low concentrations of I-131 through radiochemical analysis; sensitivity is approximately 0.25 pCi/L. Iodide carrier is added to the raw milk and ion exchange is used for-the first step of purification. Sodium hypochlorite leached solution is treated with nitric acid and hydroxylamine. An organic extraction is effected and Ag! is precipitated. The precipitate is washed, dried, and the tared filter is counted on a low background proportional beta particle counter. Recovery is based upon iodide carrier recovery.

e 4.0-31

KEY INFORMATION FOR TABLES

1. Where data can range over several orders of magnitude, concentrations are expressed as powers of ten using E notation.

For example E-03 is 10- 3 .

2. Error terms are expressed as two. standard deviations (95%

confidence) for EIC data; zero values have three standard deviation error terms (99.7% confidence).

3. Where shown, averages are b.ased upon measurable data, that is where two standard deviations are smaller than the calculated value. These averages should be used only as presented; averages among different sampling locations only present~ basis for relative variability. The sequence in time is also an.important factor.

4. The exact minimum detectable concentrations are

.variable dependent upon many factors such as complexity of a spectrum, quantity of the sample, etc. In order

• . to maximize the value of the analysis, certain .

concentrations are ;reported as less than: a given value.-

These data are reported through two methods.

a. Frequently the analyses present information, such as a gamma spectrum peak, where the calculated error term at 95% confidence is larger than the calculated value. One can disce-,:n a very finite probability for the presence of that isotope. In these cases, the error term.is increased to permit 99.7% confidence

. 4.0-32

and the result is divided by sample size to yield concentration.

b. One can expect certain isotopes to be present* in a sample due to the nature of that sample.

This is especially* -ti:ue when a member of a class of samples has definite data, but other members of the class do not exhibit the same information. Likewise, one can observe.a small concentration of one member of a parent-daughter pair without observing the other member which is obviously present. In these cases (always represented by the lowest "less than" concentrations) the value reported is based upon three standard deviations (99.7% confidence) of the instrument background with a blank sample in the counting geometry.

4.0-33

EQUIPMENT

.Gross alpha, gross beta, Sr-89 and Sr-90 measurements are made using a low background Beckman Widebeta II equipped with shielding and anti-coincidence electronic to obtain very low background counting rates. Automatic absorber measurements are also availabe.

Tritium enrichment analysis has a minimum detectable concentratfon of tritium in water on the order of 0.10 pCi/ml. Tritium is determined using a Beckman Model LS-200 liquid scintillation counter with 5 ml of water in Insta-Gel scintillator. The MDA for this system without enrichment is 0.6 pCi/ml

. .based on a 100-minutes counting time, but the practical reporting level is 1 pCi/ml. When values below 1 pCi/ml are required, the sample is electrolytically enriched (HASL procedure) prior to liquid scintillation counting.

The gamma spectrometry system utilizes a high resolution detection with efficiency and resolution suitable for counting

• environmental samples. The analyzer system is a Nuclear Data 4420 with ND 812 Computer with 20 K memory for acquisition, storage,*manipulation*of spectra and programs. The Ge-Li detector is a right circular cylinder with a 40 nun diameter,

• drifted coaxially with an open end. The "P" core diameter is 6 mm and "N". layer thickness of 0. 5 mm. , An active area of 12.3 cm 2 faces the thin aluminum window which permits analysis of photon energies as low as 35 kev. The resolution is 2.2 kev for the 1170 kev peak of Co-60 and the peak-to-compton ratio is 32:1 for Co-60 gamma. The minimum detectable activities 4,0-34

(MDA); based upon typical samples for the type indicated are listed in Table IV. The reporting level is a function of spectrum complexity, detector resolution,. and peak-to-compton ratio. One reason this particular system was selected for environmental samples was the excellent resolution and peak-to compton ratio. The detector resides in a graded shield with eight ft 3 ,interior and with four inches ~f lead on top and sides and six inches on the bottom .

/

TABLE IV TYPICAL MINIMUM DETECTABLE CONCENTRATIONS GE-LI GAMMA SPECTROMETRY Air Samples Cs-134 Cs-137 Ba-140 La-140 Other Expected Gamma Emitters Water Samples Cr-51 80 pCi/1 Co-58 8 pCi/1 Co-60 8 pCi/1 Mn-54 8 pCi/1 Cs-134 9 pCi/1 Cs-137 9 pCi/1 Ba-140 30 pCi/1 La-140 20 pCi/1 Other Expected 8 to Gamma tmitters

• 80.pCi/l Soil and Bottom Sediments Cs-134 35 pCi/kg (dry)

Cs-137 35 pCi/kg (dry)

.Cr-51 280 pCi/kg (dry)

Co-58 30 pCi/kg (dry)

Co-60 30 pCi/kg (dry)

Mn-54 30 pCi/kg (dry)

Other Expected 30 to Gamma Emitters 300 pCi/kg (dry)*

Fish, Benthus, and Aquatic Vegetation 1-131 13 pCi/kg (wet)

Cs-134 14 pCi/kg (wet)

. Cs-137 13 pCi/kg (wet)

Cr-51 110 pCi/kg (wet)

Co-58 12 pCi/kg (wet)

Co-60 13 pCi/kg (wet)

Mn-54 12 pCi/kg (wet)

Other Expected 1 to Gamma Emitters 120 pCi/kg ,(wet) e 4.0-36

SUMMARY

OF SAMPLE DATA PAGE AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS 38 GAMMA SPECTROMETRY - QUARTERLY COMPOSITES 53 AMBIENT THERMOLUMINESCENT DOSIMETRY 57 PRECIPITATION SAMPLES 59 MILK SAMPLES 61 WELL WATER 76 SURFACE WATER 77 JAMES. RIVER WATER 78 SILT SAMPLES 88 OYSTER SAMPLES. 91 CLAM *SAMPLES 97 CRAB SAMPLES 106

~

FISH SAMPLES 108 SOIL SAMPLES 109 CROP SAMPLES 112 FOWL SAMPLES 115 4.0-37

AIR PARTICULATE SAMPLES GROSS BETA ANALYSIS (picocuries per cubic meter)

Date Volume/

Collected Cu.M. 7 75 Surry s;ation 297 5.6 + 0.5 E-02

.Hog Island Reserve 278 5.6 + 3"~4 E-03 Bacon's Castle 262 6.5 + 0.6 E-02 Alliance 272 9.4 + 0.6 E-02 Colonial Pkwy. 202 0.0 + 3.0 E-03 Dow 202 6.2 + 0.7 E-02 Fort Eustis 302 2.0 + 0.4 E-02 Newport News *. 202. 4.2 + 0.6 E-02 Average 4.9 E-02 Maximum 9.4 + 0.6 E-02 Minimum 5.6 + 3.4 E-03 4.0-38

e AIR PARTICULATE SAMPLES GROSS BETA ANALYSIS (picocuries per cubic meter) 7-29-75 Surry Station 297 Cu.M. 3.4 + 0.5 E-02 Hog Island Reserve 282 0.0 + 4.1 E-03 Bacon's Castle 325 2.5 + 0.4 E-02 Alliance 262 5.8 + 0.7 E-02 Colonial Parkway 302 0.0 + 3.8 E-03 Dow 222 3.6 + 0.7 E-02 Fort Eustis *. 302 1.1 + 0. 4 E-02 Newport News 182 2.9 + 0.7 E-02 Average 3.2 E-02 Maximum 5.8 + 0.7 E-02 Minimum 1.1 + 0.4 E-02 4.* 0-39

- AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

Aug._ 12, 1975 Surry Station 297 Cu.M. 4.0 +/- 0.5 E-02 Hog Island Reserve 278 2*.8 + 0.5 E-02 Bacon's Castle 302 4.0 + 0.5 E-02 Alliance 282 7.2 + 4~0 E-03 Colonial Pkwy. 302 3.2 + 0.5 E-02 Dow 202 5.2 + 0.8 E-02 Fort Eustis 302 1. 1 + 0. 4 E- 02 Newport News 282 2.9 + 0.5 E-02 Average 3.0 E-02

• Maximum 5.2 + 0.8 E-02 Minimum 7.2 + 4.0 E-03 4.0-40

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

August 26, 1975.

Surry Station

• 302 Cu.M. 4.0 + 0.4 E-02 Hog Island Reserve 292 3.3 + 0.4 E-02 Bacon's Castle 282 4.7 + O. 5 E-02 Alliance. 282 9.1 + 3.5 E-03 Colonial Parkway 282 3.8 + 0.5 E-02 Dow 238 6.3 + 3.9 E-03 Fort Eustis 282 l.7+0.4E-02

• Newport News 282 1.0 + 0.4 E-02 Average 2.5 E-02 Maximum 4.7 + 0.5 E-02*

Minimum 6.3 + 3.9 E-0~

4.0 AIR PARTICULATE SAMPLES GROSS ALPHA/BETA CONCENTRATIONS (picocuries per cubic meter)

September 9, 1975 Surry Station 297 Cu.M. 1. 4 + 0. 4 E-02 Hog Island*Reserve 282

• 2.5 + 0.4 E-02 Bacon' ~ Castle . 302 3.2 + 0.4 E-02 Alliance 262 2.0 + 0.4 E-02 Colonial Pkwy 302 9.8 + 3.4 E-03 Dow 222 5.1 + 4.2 ~-03 Fort Eustis 282 1.5 + 0.4 E-02 Newport News . 242 1. 4 + 0. 4 E-02 Average 1. 7 E-02 Maximum 3.2 + 0.4 E-02 Minimum 5.1 + 4.2 E-03 I*

• 4.0-42

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

September 23, 1975

• Surry Station 302 Cu.M. 2.2 + 0.4 E-02 Hog Island Reserve 252 7.6 + 3.9 E-03 Bacon' s Ca.st le 282 2.0 + 0.4 E-02 Alliance 282 9.7 + 3.6 E-01 Colonial Parkway 282 2.5 + 0.4 E-02 Dow* *238 0.0 + 3.9 E-03 Fort Eustis 282 1. 1 + 0. 4 E-02

• Newport News 161 0.0 + 5.8 E-03 Average 1. 6 E-02 Maximum 2.5 + 0.4 E-02 Minimum 7.6 + 3.9 E-03

- ..~ .. *.: **,

. I .

4.0-43

AIR PARTICULATE SAMPLES GROSS BETA ANALYSIS

{picocuries per cubic meter)

TH~RD QUARTER AVERAGES Surry Station 3.4 E-02 Hog.Island Reserve 2.0 E-.02 Bacon's.Castle 3.8 E-02 Alliance 3 .* 3 E-02 Colonial Pkwy. 2.6 E-02 Dow. 3.2 *E-02 Fort Eustis 1. 4 E-02 I

Newport News 2.5 E-02 Average 2.6 E-02 Average Maximum* 5.1 E-02 Average Minimum .. 7 .1 E-03 4.0-44

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picqcuries per cubic meter)

October 7, 1975 Surry Station 282 3.1 + 0.5 E-02 Hog Island Reserve 282 1. 4 + 0. 4 E- 02 Bacon's Castle 302 0.0 + 3.1 E-03 Alliance 282 2.2 + 0.4 E-02 Colonial Parkway 282 1.6 + 0.4 E-02 Dow 202 0.0 + 4.7 E-03 Fort Eustis 252 5.6 + 3.8 E-03 Newport News

• 202 o~o + 4.7 E-03 Average 1. 8 E-02 Maximum 3.1 + 0.5 E-02 Minimum 5.6 + 3.8 E-03 e

4.0-45

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS e (picocuries per cubic me~er)

October 21, 1975 Surry Station 302 Cu.M. 7.7 + 0.6 E-02 Hog Island Reserve 292 9.1 + 3.4 E-03 Bacon's Castle *312 2!4 + 0.4 E Alliance 302 6.8 + 3.1 E-03 Colonial Parkway 282 7.1 + 3.4E-03 Dow 282 7 .. 1 + 0. 7 E-02 Fort Eustis 282 1. 7 + 0. 4 E-02 Newport News 202 4.9 + 0.7 E-02 Average 3.3 E-02 Maximum 7.7 + 0.6 E-02 Minimum 6.8 + 3.1 E-03 4.0-46

AIR PARTICULATE SAMPLES

- GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

Volume November 4, 1975 Surry Station 297 5.2 + 0.5 E-02 Bacon's Castle 312 0.0 + 3.0 E-03 Hog ~sland Reserve 292 1.4 + 0.4 E-02 Newport News. 182. 3.1 + 0.7 E-02 Fort Eustis 262 1.5 + 0.4 E-02

~. 2~ O. 0 + 3. 4 E-03 Colonial'Parkway 282 0.0 + 3.4 E-03 Alliance 282 1.6 + 0.4 E-02 Average 2.6 E-02 Maximum 5.2 + 0.5 E-02 I Minimum 1. 4 + 0. 4 E-02 4.0-47

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter).

'/

Nov. 18, 1975 Newport News 297 0.0 + 4.4 E-03 Fort Eustis 282 0.0 + 4.7 E-03 Dow 283 0.0 + 4.6 E-03 Colonial Pkwy. 252 0.0 + 5.2 E-03 Alliance 252* 3.8 + 0.7 E-02 Bacon's Castle 242 6.6 + 0.8* E-02 Hog Island Reserve 222 1. 4 + 0. 6 E- 02 Surry Station 302 9.1 + 0.8 E-02 Average

• 5.2 E-02.

Maximum 9.1 + 0.8 E-02 Minimum 1. 4 +. 0. 6 E-02 4.0-48

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

December 4, 1975 Surry Station*. 297 .l.1 + 0.1 E-01 Hog Island Reserve 282 1. 2 + 0. 4 E-02 Bacon's Castle 282 0.0 + 4.0 E-03 Alliance 252 8.5 + 0.8 E-02 Colonia1 Parkway 252 0.0 + 4.5 E-03 Dow 242 0.0 + 4.7 E-03 Fort Eustis 222 0.0 + 5~1 E-03 Newport News 302. 4.9 + 3.8 E-03 Average 5.3 E-02 Maximum 1.1 + 0.1 E-01 Minimum 4.9 + 3.8 E-03 4.0-49

AIR PARTICULATE SAMPLES GROSS BETA CONCENTRATIONS (picocuries per cubic meter)

December 16, 1975 Surry Station 302 .0.0 + 3.4 E-03 Hog Island .

Reserve 282 3.1 + 0.5 E-02 Bacon's Castle 272 9.3 + 4.1 E-03 Alliance 272 0.0 + 3.8 E-03 Colonial Pkwy. 242 0.0 + 4.3 E-03 Dow 202 6.5 + 0.8 E-02 Newport News 182 0.0 + 5.7 E-03 Fort Eustis .. 282 0.0 + 3.7 E-03

.Average 3.5 E-02 Maximum 6.5 + 0.8 E-02 Minimum 9.3 + 4.1 E-03 4.0-50

AIR PARTICULATE SAMPLES e GROSS BETA ANALYSIS

• . (picocuries per cubic meter)

December 31, 1975 Newport News 324 9.0 + 2.8 E-03 Fort Eustis 508 .. 1. 6 + 0. 2 E-02

• Dow 259 1. 9 + -0. 4 E- 02

• Colonial Pkwy. 238 2.0 + 0.4 E-02 Alliance 302 1.5 + 0.3 E-02 Bacon's Castle 324 5.9 + 2.6 E-03 January 2, 1976 Hog Island Reserve 343 3.0 + 0.4 E-02 Surry Station:. 392 2.4 + 0.3 E-02 Average 1. 7 E-02 Maximum . 3.0 + 0.4 E-02 Minimum 5.9 + 2.6 E-03 4.0-51

AIR PARTICULATE SAMPLES GROSS BETA ANALYSIS (picocuries per cubic meter)

FOURTH QUARTER AVERAGES Surry Station 6.4 E-02 Hog Island Reserve 1. 8 E-02 Bacon's Castle 2.6 E-02 Alliance 3.0 E-02 Colonial Parkway 1.4 E-02 Dow 5.2 E-02 Fort Eustis 1. 3 E-02 Newport News 2.3 E-02 Average 3.0 E-02 Maximum 6.4 *E-02 Minimum 1. 3 E-02

AIR PARTICULATE SAMPLES (picocuries per cubic meter)

THIRD QUARTER, 1975 COMPO~ITES Bacon's.Castle, Alliance Hog Island Reserve Colonial Parkway, Dow Surry Station .Fort Eustis Volume 3456 Cu.M. 8240 Cu.M.

Ganuna S:eectrometry Be-7 2. 5 + 1. 3 E-02 3.3 + 0.9 E-02 K-40 Less than 3.2 E-02 Less than 1. 3 E-02 Mn-54 Less than 1. 8 E-03 1.2 + 0.5 E-03 Nb-95 Less than .3.1 E-03 Less than 1. 3 E-03 Zr-95 Less than 2.6 E-03 Less than 1.1 E-03 Ru-103 Less than 1. 6 E-03 Less than 6.9 E-04 Sb-125 Less* than 7.9 E-03 . Less -than 3.3 E-03 Cs-137 Less than 2.5 E-:-03 Less than 1. 3 E-03 Ce-144 Less than 1. 9 E-02 7.9 + 5.3 E-03 Pb-212 Less than 6. 7 E-03 Less than 2.*8 E-03

• Pb-214 Less than 8.0 E-03 Less than 3.3 E-03 Bi-214 Less than 7.6 E-03 Less than 3.2 E-03 Ac-228 Less than 7.0 E-02 Less than 8.3 E-03

• e 4.0-53

AIR PARTICULATE.SAMPLES (picocuries per cubic meter)

THIRD QUARTER, 1975 COMPOSITES Newport News Volume 1351 Cu.M.

Gamma Spectrometry Be-7 Less than 4.9 E-02 K-40 6.7 + 5.6 E-02 Mn-54 Less than 4.6 E-03 Nb-95 Less than* 7.9 E-03 Zr-95 Less than 6. 7 E-03 Ru-103 3.5 + 2.8 E-03 Sb-125 *Less than 2.2 E-02 Cs-137 Less than 6.3 E-03 Ce-144 Less than 4.8 E-02 Pb-212 Less than 1. 7 E-02 Pb-214 Less than 2.0 E-02 Bi-214 Less than 1. 9 E-02 Ac-228 Less than 5.1 E-02 4.0-54

AIR PARTICULATE SAMPLES

• (picocuries per cubic meter)

FOURTH QUARTER, 1975 COMPOSITES Bacon's Castle, Alliance Surry Station and Colonial Pkwy, Dow, Hog Island Reserve Fort Eustis Volume 3645 Cu.M. 8311 Cu.M.

Gamma Spectrometry Be-7 4. 3 + 1. 5 E-02 2.4 + 0.7 E-02 K-40 Less than 3.9 E-02 Less than 1.1 E-02

. Mn-54 2. 3 + 1. 8. E-03 Less than 1. 2 E-03 Co-58 8.2 + 2.7 E-03 1. 5 + 0. 7 E-03 co*-60 5.2 + 2.3 E-03 Less than 1.1 E-03 Cs-137

• 2. 0 + 1. 8 E-03 Less than 1. 2 E-03 Bi-212 Less than 1. 8 E-02 Less than 7.9 E-03 Pb-212 Less than 6.1 E-03 Less than 2.7 E-03 Pb-214 Less than 7.5 E-03 Less than 3.3 E-03 Bi-214. Less than 7 .. 1 E-03 Less than 3.1 E-03 Ra.:..226 Less than 7.0 E-02 Less than 3.1 E-02 I

. I e

4.0-55

- AIR PARTICULATE SAMPLES (picocuries per cubic meter)

FOURTH QUARTER, 1975 COMPOSITES Newport News Volume 1394 Cu.M.

Gannna Spectrometry

.Be-7 4.4 + 2.4 E-02 K-40 Less than 9.7 E-02 M'n.-54 . Less than 7.0 E-03 Co-58 Less than 6.3 E-03 Co-60 Less than 6.5 E-03 Cs-137 4.6 + 2.8 E-03 Bi-212

• Less than 4.7 E-02 Pb-212 Less than 1.6 E-02 Pb-214 Less than 1.9 E-02 Bi -214 Less than 1.7 E-02 Ra-226 Less than 1.7 E-01 4.0-56

AMBIENT THERMOLUMINESCENT DOSIMETRY THIRD QUARTER, 1975 Date Annealed: 6-25-75. Date Returned: 10-23-75 Date Issued: 7-3-75 Date Read: 10-23-75 Net mrem 1st 2nd 3rd 4th 5th Average* +2 Sigma mrem/wk Control 13 12 13 12 13 13.1 1.1 0 . .7 Surry Station

• 15 15 17 16 16 16.4 1. 8 0.9 Hog Island

• Reserve Missing in Field Bacon's Castle 10 10 9 9 9 9.8 1.1 0.5 Alliance 10 9 9 9 9 9.6 0.9 0.5 Colonial Pkwy*. 18 17 17 19 17 18.3 1. 9 1.0 Dow 9 11 11 11 9 10.6 2.3 0.6 Ft. Eustis 11 11 12 12 12 12.1 1.1 0.7 Newport News 12 12 12 12 12 12. 5 0.0 0.7 Smithfield 15 14 14 14 13 14.6 1. 5 0.8 Scotland Warf 12 11 12 11 11 11. 9 1.1 o. 7 Jamestown 10 10 10 . 10 9 10.2 0.9 0.6 1

Lee Hall 15 16 15 15 15 15.8 0.9 0.9 Routes10-676 10 10 10 10 10 10.4 0.0 0.6 Average 0.7

• Batch B Calibration Factor of 1. 04 applied.

4.0-57

AMBIENT THERMOLUMINESCENT DOSIMETRY FOURTH QUARTER, 1975 Date Annealed: 9-29-75 Date Returned: 1-7-76 Date Issued: 9-30-75 Date Read: 1-8-76 Net mrem 1st 2nd 3r 4th 5th Average~\-+ 2 Sigma mrem/wk Control 5 5 5 4 5 5.2 1. 0 0.4 Surry Station* 70 75 75 79 73 84.0 7.2 5.7 Hog Island Reserve 14 14 12 13 14 14.5 1. 9 1. 0 Bacon's Castle 13 13 12 13 12 13.6 1.2 0.9 Alliance 11 9 7 6 D 8.9 4.8 0.6 Colonial Pkwy". 11 10 9 9 12 11.1 2 .. 8 0.8 Dow 7 10 '

10 11

• 10 10.4 3.2 0.7 Ft. Eustis 13. 12 14 11 11 13.2 2.8 0.9 Newport News 7 10 9 9 11 10.0 3.2 0.7 Smithfield 15 13 16 15 9 14.7 6.1 1. 0 Scotland Warf .6 12 12 12. 11 11.5 5.6 0.8 Jamestown 8 10 10 9 9. 10.0 1. 8 0~1 Lee Hall 10 15 15 17 18 16.3 6.7 1..1 Routes10-676 11 10 10 8 10 10.6 2.4 0.7 Average of Locations 1. 2

• Calibration factor of 1.085 applied.

4.0-58

- . PRECIPITATION SAMPLES (nanocuires per square meter)

THIRD QUARTER, 1975 COMPOSITE Newport. News Surry Stat ion*

Gross Beta 3.1 + 0.1 E+OO 2.8 + 0.1 E+OO Tritium

• 5.3 + 3.5 E+Ol 7.5 + 5.0 E+Ol Newport News - 757 mls representing 15140 mls Total for Third Quarter - Collector area= 8.56 E-02 Sq. M.

Surry Station - 913 mls representing 18260 mls Total for Third Quarter. Collector area= 7.29 E-02 Sq. M.

4.0-59

PRECIPITATION SAMPLES (nanocuries per meter squared)

FOURTH QUARTER, 1975 COMPOSITE Surry Station Newport News Gamma Spectrometry Be-7 4.8 + 2.2 E+OO K-40 Less than 5.1 E+OO Less than 3.1 E+OO Co-58 6.5 + 3.3 E-01 2.2 + 1.8 E-01 Co-60 3.1 + 2.5 E-01 Cs-137 4.5 + 3.7 E-01 Less than 2.4 E-01 Ce-144 2.1 + 1.6 E+OO Tl-208 Less than 4.2 E-01 Pb-212 Less than 9.6 E-01 Less than 8.2 E-01 Pb-214 Less than 1. 2 E+OO Ra-226 Less than 1.1 E+Ol Less than 8.7 E+OO

- \*

4.0-60 \

MILK SAMPLES (picocuries per liter)

Lee Hall Colonial Parkway.

Date Collected 7-15-75 7-15-75 Radiochemistry I-131 0.0 + 1.1 E-01 0.0 + 1.1 E-01 Ca (g/1) No sample left No sample left Sr-89 2.9 + 2.0 E+OO 1. 6 + 0 . 2 E+O 1 Sr-90 3. 2 + 1. 1 E+OO 5. 3 + 1. 2 E+OO Gamma Spectrometry K-40 1.6 + 0.4 E+03 1. 3 + 0. 4 E+03 Cs-137 Less than 1. 8 E+Ol 2. 2 + 1. 2 E+Ol Ce-141 Less than 7.5 E+Ol Less than 7.5 E+Ol Pb-212 .*. Less than 8.5 E+Ol Less than 8.3 E+Ol Bi-214 Less than 8.4 E+Ol Less than 8.4 E+Ol Pb-214 . Less than 8.4 E+Ol

• Less than 8.4 E+Ol Ra-226 Less than 9.3 E+02 Less than 9.3 E+02 e

4.0-61

MILK SAMPLES (picocuries per liter)

Epps Judkins Date Collected 8-4-75 8-4-75 Radiochemistry I*

I-131 0.0 + 8.8 E-02 0.0 + 8.1 E-02 Ca (g/1) 1.4 1. 2 Sr-89 0.0 + 4.2 E+OO 0.0 + 3.8 E+OO Sr-90 6.1 + 2.2 E+OO 4.9 + 2.0 E+OO Gamma Spectrometry K-40 1. 2 + 0 . 4 E+O 3 1. 4 + 0. 4 E+O 3 Mn-54 Less than 1.1 E+Ol Less than 1.1 E+Ol Co-60 Less than 1.9 E+Ol Less than 1.9 E+Ol Sb-125 Less than 8.2 E+Ol Less than 8.2 E+Ol Cs-137 Less than 2.0 E+Ol 1. 5 + 1. 5 E+O 1 Ce-141 Less than 7.6 E+Ol. Less than 7.6 E+Ol Hg-203 Less than 3.1 E+Ol Less than 3.1 E+Ol Pb-212 Less than 8.4 E+Ol Less than 8.0 E+Ol Pb-214 Less than 8. 7 E+Ol Less than 8.7 E+Ol Bi-214 Less than 1.9 E+02 8. 5 + 7. 6 E+Ol Ra-226 Less than 9.3 E+02 Less than 9.3 E+02 Ac-228 Less than 1.8 E+02 Less than 1.8 E+02 4.0-62

. MILK SAMPLES (picocuries per liter)

Epps Lee Hall Date Collected 8.:..s-1s 8-5-75 Radiochemistry Sr-89 0. 0 + 1. 8 E+OO 0. 0 + 1. 7 E+OO Sr-90 2. 2 + 1. 2 E+OO 2 . 0 + 1. 2 E+OO 1-131 0.0 + 7.8 E-02 0.0 + s*.6 E-02 Ca (g/1) . 1. 5 1. 3 Gamma Spectrometry K-40 1.4 + 0.4 E+03 1. 2 + 0. 4 E+03 Mn-S4 . Less than 1. 1 E+Ol Less than 1.1 E+Ol Co-60 Less than 1.9 E+Ol Less than 1.9 E+Ol Sb-125

• iess than 8.2 E+Ol Less than 8.2 E+Ol Cs-137 Less than 2.1 E+Ol Less than 1.2 E+Ol Ce-141 Less than 7.6 E+Ol Less than 7.6 E+Ol Hg-203 .Less than 3.1 E+Ol Less than 3.1 E+Ol Pb-212 Less than 8. 0 E+Ol . Less than 8.0 E+Ol Pb-214 Less than 8.7 E+Ol Less than 8.7 E+Ol

~i-214 Less than 1.9 E+02 Less than 1.9 E+02 Ra-226 Less than 9.3 E+02 Less than 9.3 E+02 Ac-228 Less than 1.8 E+02 Less than 7.8 E+02 4, o. . 6J <.

• e 1 *

• MILK SAMPLES (picocuries per liter)

Lee Hall Colonial Parkway Date Collected 8-12-75 8-12-75 Radiochemistry I-131 0.0 + 7.9 E-02 o.o + 9.1 E-02 Ca (g/1) L3 1. 3 Sr-89 0.0 + 2.5 E+OO 0.0 + 3.1 E+OO Sr-90 . 2 . 8 + 1. 6 E+OO 8.9 + 2.0 E+OO Gamma Spectrometry K-40 1. 4 + 0. 4 E+03 1. 3 + 0. 4 E+03 Mn-54 1. 2 + 1. 1 E+O 1 Less than 1.1 E+Ol Co-60 Less than 1.9 E+Ol Less than 1.9 E+Ol Sb-125 Less than 8.2 E+Ol Less than 8.2 E+Ol Cs-137 Less than 2.1 E+Ol . Less than 2.3 E+Ol Ce-141 Less than 7.6 E+Ol Less than 7.6 E+Ol Hg-203 Less than 3.1 E+Ol Less than 3.1 E+Ol Pb-212 Less than 8.3 E+Ol Less than 8.0 E+Ol Pb-214 Less than 8.7 E+Ol Less than 8.7 E+Ol Bi-214 Less than 1.9 E+02 Less than 1.9 E+02 Ra-226 Less than 9.3 E+02 Less than 9.3 E+02 Ac-228 Less than 1.8 E+02 Less than 1.8 E+02 4.0-6li

- Date Collected 8-26~75 MILK SAMPLES (picocuries per liter)

Judkins Epps 8-26-75 Radiochemistry ~ . '

I-131 0.0 + 5.8 E-.02 0. 0 + 1. 1 E-01 Ca (g/1) 1.4 - . 1.4 -

Sr-89 O. 0 + 3. 5 E+OO 0.0 + 2.6 E+OO Sr-90 7.3 + 2.0 E+OO 5.0 + 1.6 E+OO Gamma Spectrometry K-40 1.6 + 0.4 E+03 1. 4 + 0. 4 E+03 Mn-54 Less than 1.1 E+Ol Less than 1.1 E+Ol Co-60 Less than 1.9 E+Ol Less than 1.9 E+Ol Sb-125

• Less than 8.2 E+Ol Less than 8.2 E+Ol Cs-137 Less than 2.0. E+Ol Less than 1.8 E+Ol

• • ce-141 Less than 7.6 E+Ol Less than 7.7 E+Ol Hg-203 Less than 3.1 E+Ol Less than 3.1 E+Ol Pb-212 Less than 8.0 E+Ol Less than 8.0 E+Ol Pb-214 Less than 8.7 E+Ol Less than 8.7 E+Ol Bi-214 Less than 1.9 E+02 Less than 1.9 E+02 Ra-226 Less than 9.3 E+02 Less than 9.3 E+02

.Ac-228 Less than 1.8 E+02 Less than 1.8 E+02 4.0-65

• MILK SAMPLES (picocuries per liter)

• Colonial Parkway Lee Hall Date Collected '9-9-75 Radiochemistry I-131 0~ 0 + 1. 4 E-01 O. 0 + 1. 8 E-01 Ca (g/1) 1. 3 1.3 -

Sr-89 0.0 + 3.0 E+OO 0.0 + 3.5 E+OO Sr-90 3.0 + 2.2 E+OO 6.0 + 2.6 E+OO Gamma Spectrometry K-40 1~7+0.4E+03 1. 6 + 0. 4 E+O 3 Cs-137 Less .than 2.1 E+Ol Less than 2.1 E+Ol Tl-208 Less than 2.6 E+Ol Less than 2.6 E+Ol Pb-212 Less than 8.2 E+Ol Less than 8.2 E+Ol Pb-214 Less than 8. 4 E+Ol . Less *than 8.4 E+Ol Bi-214 Less than 8.2 E+Ol Less than 8.2 E+Ol 4.0-66

..°'T

MILK SAMPLES (picocuries per liter)

Judkins Epps Date Collected 9-23-75 9-23-75 Radiochemistry I-131 0.0 + 2.5 E-01 0.0 + 2.0 E-01 Ca (g/ 1) 1. 3 1. 3 Sr-89 o.o.+ 4.5 E+OO 0.0 + 4.6 E+OO Sr-90 . 1. 0 + 0. 2 E+Ol 1. 0 + 0. 3 E+Ol Gamma Spectrometry K-40 1. 1 + 0. 4 E+03 9.9 + 3.7 E+02 Cs-137 Less than 3.1 E+Ol Less than 2.6 E+Ol Tl-208 Less than 2.6 E+Ol Less than 2.6 E+Ol Pb-212 Less than 8.2 E+Ol Less than 8.2 E+Ol Pb-214 Less than 8.4 E+Ol Less than 8.4 E+Ol Bi-214 Less than 8.2 E+Ol Less than 8.2 E+Ol 4,0-67

MILK SAMPLES

~ (picocuries per liter)

Epps Lee Hall Date Collected 10-1-75 10-2-75 Radiochemistry I-131 0.0 + 2.5 E-01 0. 0 + 2. 6 *E--01 Ca (g/1) 1.2 - 1.4 - .

Sr-89 0.0 + 5.8 E+OO 0.0 + 4.8 E+OO Sr-90 6.3 + 2.2 E+OO 5.0 + 1.7 E+OO Gamma Spectrometry K-40 1.2 + 0.4 E+03 1. 5 + 0. 4 E+03 Cs-137 Less than 2.1 E+Ol Less than 1.8 E+Ol Tl-208 Less than 2.4 E+Ol Less than 2.4 E+Ol Pb-212 *Less than 8.1 E+Ol Less than 8.0 E+Ol Ra-226 Less than 9.2 E+02 Less than 9.0 E+02 Ac-228 Less.than 1.5 E+02. Less than 1.9 E+02 e

4.0-68*

MILK SAMPLES (pico curies per liter)

Lee Hall Epps Date Collected 10-2-75 10-1-75 Radiochemistry I-131 0.0 + 2.8 E-01 0. 0 +. 1. 9 E-01 Ca (g/1) 1.4 - 1.2 -

Sr-89 0.0 + 3.1 E+OO 0.0 + 3.1 E+OO Sr-90 1. 7 + 1. 7 E+OO 2. 9 + 1. 5 E+OO Galilllla SEectrometry K-40 1.5 + 0.4 E+03 1.3 + 0.4 E+03 Sb-125 Less than 8.5 E+Ol Less than 8.0 E+Ol Cs-137 Less than 1. 6 E+Ol Less than 1. 8 E+Ol Tl-208 Less than 2.4 E+Ol Less than 2.6 E+Ol Pb-212

• Less than 8.0 E+Ol Less than 8.1 E+.01 Pb-214 Less than 8.6 E+Ol Less than 7.5 E+Ol Bi-214 Less than 6.7 E+Ol Less than 6.4 E+Ol Ra-226 Less than 9.0 E+02 Less than 9.0 E+02

MILK SAMPLES (picocuries per liter)

Lee Hall Colonial Parkway Date Collected 10-7-75 10-7-75 Radiochemistry I-131 0.0 + 5.6 E-02 o.o*+ 1.1 E-02

• Ca (g/1) 1.4 1. 4 -*

Sr-89 C>. 0 + 2. 5 E+OO 0.0 + 3.1 E+OO Sr-90 5.4 + L 6 E+OO 5. 5 + 1. 7 E+OO Gamma Spectrometry K-40 1.7 + 0.4 E+03 1.3 + 0.4 E+03 Cs-137 1.0 + 0.9 E+Ol 1. 0 .+ 0. 9 E+O l Pb-212 Less than 8.6 E+Ol Less than 8.1 E+Ol Pb-214 *. Less than 7.5 E+Ol Less. than 7.6 E+Ol Ac-228 Less than 1. 9 E+02 Less than 1. 5 E+02 4,0.. 70

MILK SAMPLES (picocuries per liter) e Date Collected Epps 10-21-75 Judkins 10-21-75 Radiochemistry Sr-89 0.0 + 3.7 E+OO .. 6. 8 + 2. 3 E+OO Sr-90 1. 2 + 0. 4 E+Ol 4. 2 + 3. 1 E+OO I-131 0.0 + 1.2 E-01 0.0 + 1.1 E-01 Ca (g/1) 1.3 - 1. 3 -

Gamma Spectrom.etry K-40 1.1 + 0.4 E+03 1.3 + 0.4 E+03 Nb-95 Less than 2.1 E+Ol Less than 2.0 E+Ol Zr-95 Less than 1. 2 E+Ol Less than 1. 0 E+Ol Cs-137 Less than 1. 6 E+Ol Less than 2.4 E+Ol Bi-212

• Less than 8.0 E+Ol 2.4 + 1.4 E+02 Pb-212 Less than 8.1 E+Ol Less than 8.4 E+Ol Pb-214 Less than 7.5 E+Ol Less than 8.6 E+Ol Bi-214 1. 0 + 0. 8 E+02 6.0 + 3.6 E+Ol e

4,0-71

MILK SAMPLES (picocuries per liter) e Date Collected Colonial Parkway 11-5-75 Radiochemistry Sr-89 0.0 + 4.1 E+OO Sr-90 4. 8 + 1. 8 E+OO I-131 0.0 + 1.9 E-01 Ca (g/1) . +* 3 -

Gamma Spectrometry K-40 1. 4 + 0. 6 E+03 Cs-137 Less than 3.2 E+Ol Bi-214 Less than 1.0 E+02 Ra-226 Less than 1.5 E+03 4,0-72

MILK SAMPLES

- Date Collected Epps (picocuries per liter) 11-18-75 Judkins 11-18-75 Radiochemistry Sr-89 4.9 + 2.5 E+OO 5.4 + 2.6 E+OO Sr-90 3.9 + 2.2 E+OO 5.5 + 2.4 E+OO I-131 0.0 + 8.4 E-02 0.0 + 8.8 E-02 Ca (g/1) 1.*4 - 1. 3 Gamma Spectrometry K-40 1. 8 + 0. 4 E+O 3 1. 7 + 0.4 E+03 Sb-125 Less than 8.0 E+Ol Less than 8.1 E+Ol Cs-137 Less than 2.0 E+Ol 1. 3 + 1. 0 E+O 1 Tl-208 Less than 2.5 E+Ol Less than 2.4 E+Ol Pb-212 Less than 8.5 E+Ol Less than 8.3 E+Ol Pb-214 Less than 8. 0 E+Ol , Less than 9.0 E+Ol "Bi-214 Less than 1.4 E+02 Less than 7.8 E+Ol Ra-226 Less than 9.4 E+02 Less than 9.0 E+02 4.0-73

MILK SAMPLES e (picocuries per liter)

Colonial Pkwy. Dairy Lee Hall Dairy Date Collected 12-4-75 12-4-75 Radiochemistry I-131

• 0 . *o + 6. 2 E- 02 0.0 + 8.0 E~02 ta (g/1) 1.3 - 1.3 -*.

Sr-89 0.0 + 3.9 E+OO 0.0 + 3.3 E+OO Sr-90 7.0 + 2.8 E+OO 5.6 + 2.4 E+OO Gamma Spectrometry K-40 1.4 + 0.4 E+03 1. 7 + 0.4 E+03 Cs-137 Less than 2.1 E+Ol. 1.6 + 1.3 E+Ol Pb-212 Less than 8.2 E+Ol Less than 8.0 E+Ol Pb-214 *. Less than 7.5 E+Ol Less than 9.7 E+Ol Ra-226 Less than 9.0 E+02 Less than 9.2 E+02 e

MILK SAMPLES (picocuries per liter)

• e Date Judkins Da:iry Gwaltney Dairy Collected 12-9-75 12 75 Radiochemistry I-131 0.0 + 7.2E-02 0.0 + 1.0 E-01 Ca (g/1) 0. 6 - 0~8 Sr-89 0.0 + 3.8 E+OO 0.0 + 3.3 E+OO Sr-90 8.9 + 2.4 E+OO 7. 0 + 2. 2 E+OO Gamma Spectrometry K-40 1.2 + 0.4 E+03 1. 0 + 0 . 4 E+O 3 Ru-103 1.4 + 1.2 E+Ol Less than 1. 0 E+Ol Sb-125 Less than 8.4 E+Ol Less than 8.0 E+Ol Cs-137 .Less than 2.2 E+Ol Less than 2.0 E+Ol Pb-212

• Less than 8.0 E+Ol Less than 8.6 E+Ol Ra-226 Less than 9.0 E+02 Less than 9.0 E+02 4.0-75

WELL WATER SAMPLES (picocuries per liter)

Hog Island Reserve .. Surry Station Date Collected 10-21-75 10-22-75 Radiochemistry Gross Alpha 0. 0 + 1. 8 E+OO 0.0 + 1.8 E+OO Gross Beta 0.0 + 5.0 E+OO 0.0 + 5.0 E+OO Tritium 2. 3 + 0. 9* E+02 1. 8 + 1. 0 E+02 Jamestown Bacon's Castle Date Collected 10-21-75 10-21-75 Radiochemistry Gross Alpha 0. 0 + 1. 8 E+O 0 0.0 + 1.8. E+OO Gross Beta 1.1 + 0. 6 E+Ol 1. 5 + 0. 6 E+Ol Tritium 1. 7 + 0. 8 E+02 2.3 + 0.9 E+02 4.0-76

SURFACE WATER SAMPLES (picocuries per liter) 10-21/22-75 Gross Alpha Gros$ Beta -Tritium Williamsburg Reservoir 0.0 + 2.4 E+OO 0.0 + 5.7 E+OO 5.3 + 3.8 E+02 Newport News Reservoir 0.0 + 2.3 E+OO o~o + 5.5 E+OO 6.5 + 3.8 E+02 Chippokes Creek 0.0 + 2.3 E+OO 2.1 + 0.7 E+Ol Less than 3.9 E+02 Smithfield Reservoir 0.0 + 2.3 E+OO 7~0 + 5.8 E+OO Less than 3.9 E+02 e

4.0-77

JAMES RIVER WATER SAMPLES e (picocuries per liter).

Chickahominy Station Intake Date Collected 7-31-75 7-31-75 Gamma Spectrometry K-40 Less than 1. 0 E+02 Less than 1. 0 E+02 Sb-125 Less than 2.8 E+Ol Less than 2.8 E+Ol I-131

• Less than 1. 0 E+Ol Less than 1. 0 E+Ol*

Cs-137 6.8 + 4.0 E+OO Less than 5.8 E+OO Ce-141 Less than 4.6 E+Ol Less than 4.6 E+Ol Tl-208 Less than 9.2 E+OO Less than 9. 2 E+OO\.

Pb-212 Less than 2.3 E+Ol Less than 2.2 E+Ol Pb-214 Less than 2.5 E+Ol Less than 2.6 E+Ol Bi-214 :Less than 2.6 E+Ol Less. than 2.6 E+Ol Ac-228 Less than 7.4 E+Ol Less than 7.4 E+Ol

• Aug. 7, 1975 . (1130) 4.0-78

JAMES RIVER WATER SAMPLES (picocuries per liter)

- Date Collected Station Discharge 7-17-75 Gallllila Spectrometry Newport News 7-28-75 K-40 Less than 1.0 E+02 :Less than 1. 0 E+o2 Sb-125 Less than 2.8 E+Ol Less than 2.8 E+Ol I-131 Less than 1. 0 E+Ol Less than 1.0 E+Ol Cs-137 *Less than 5.4 E+OO 6.1 + 5.2 E+OO Ce-141 Less than 4.6 E+Ol Less than 4.6 E+Ol Tl-208 Less than 9.2 E+OO Less than 9.2 E+OO Pb-212 Less than 2.3 E+Ol Less than 4.7 E+Ol Pb-214 Less than 2.5 E+Ol Less than 2.5 E+Ol Bi-214 Less than 2.6 E+Ol Less than 4.1 E+Ol Ac-228 Less than 7. 4 E+Ol . 8.2*+ 7.4 E+Ol 4.0-79

JAMES RIVER WATER (picocuries per liter)

Hog Island Point Date Collected 7-17-75 Gannna Spectrometry K-40 Le,ss than 1. 0 E+02 Sb-125  : Less .than 2.8 E+Ol I-131 Less than 1. 0 E+ol Cs-137 4. 1 + 4.1 E+OO Ce-141 Less than 4.6 E+Ol Tl-208 Less than 9.2 E+OO Pb-212 Less than 2.3 E+Ol Pb-214. Less, than 2. 5 E+Ol ,

Bi-214 Less than 2.6 E+Ol Ac-228 Less than 7.4 E+Ol 4.0-80

JAMES RIVER WATER (picocuries per liter).

Hog Island Point Discharge Date

.Collected 9-.9-75 . 9-9-75 Gamma SEectrometry *'..

K-40 Less- than 1.0 E+02 Less than 1.0 E+02 Cs-137 Less than 5.6 E+OO Less than 6.8 E+OO Pb-212 Less than 2.4 E+Ol Less than 2.3 E+Ol Bi...:214 Les*s than 2.4 E+Ol Less than 2.4 E+Ol e

4.0-81

e JAMES RIVER WATER SAMPLES (picocuries per liter)

. Chickahominy Date Collected 9-17-75 Gamma Spectrometry K-40 Less than 1.4 E+02 Cs-137 Less than 6.7 E+OO Pb-212 .Less than 2.4 E+Ol Pb-214 Less than 3.0 E+Ol Bi-214 Less than 2.5 E+Ol Ac-228 Less than.6.1 E+Ol 0

4,0-82

JAMES RIVER WATER SAMPLES (picocuries per liter)

Newport News Date Collected 9-30-75 Radiochemistry Gross Alpha 0.0 + 5.0 E+OO Gross Beta 7. 5 + 1. 7 E+Ol Tritium 4.0 + 4.0 E+02 Gamma Spectrometry K-40 Less than 1. 0 E+02 Co-57 6.2 + 4.8 E+OO Sb-125 Less than 2.8 E+Ol Cs-137 Less than 8.0 E+OO

• Pb-212 Less than 2.4 E+Ol Pb-214 Less than 2.7 E+Ol 4,0-83

e JAMES RIVER WATER (picocuries per liter).

Station Intake Chickahominy Date Collected 11-18-75 11-17-75 Gamma Spectrometry

. K-40 Less than 1.3 E+02 Less than 1.1 E+02 Co-60 Less than 5.0 E+OO Less than 6.6 E+OO Ru-103 Less than 5.5 E+OO 4.5 + 3.7 E+OO Sb-125 Less than 3.0 E+Ol Less than 2.8 E+Ol Cs-137 Less than 5.1 E+OO 4. 6 + 4

• 1 E+100 Pb-212 Less than 2.3 E+Ol Less than 2.4 E+Ol Pb-214 Less than 2.7 E+Ol Less than 2.5 E+Ol Bi-214 Less than 2.5 E+Ol Less than 2.9 E+Ol Ra-226 Less than 2.4 E+02. Less than 2.4 E+02

• 4.0-84

e JAMES RIVER WATER (picocuries per liter)

Newport News Hog Island Point Date Collected 11-18;.. 75 I. 11-17-75 Gamma SEectrometry K-40 Less than 1. 3 E+02 Less than 1.5 E+02 Co-60 Less than 5.0 E+OO Less than 5. 0 E+OO .

Ru-103. Less than 5.5 E+OO Less* than 5.5 E+OO Sb-125 Less than 2.8 E+Ol Less than 2.8 E+Ol

. Cs-137

• Less than 6.6 E+OO Less than 7.4 E+OO Pb-212 Less than 2.0 E+Ol Less than 2.3 E+Ol Pb-214 Less than 2.5 E+Ol Less than* 2.5 E+Ol Bi-214 Less than 2. 0 E+Ol . Less than 2.0 E+Ol Ra-226 Less than 2.4 E+02 Less than 2.3 E+02

\*

4.0-85

JAMES RIVER WATER e (p.icocuries per liter)

• Station Discharge Date Collected 11-17-75 Gamma Spectrometry K-40 Less than 1. 3 E+02 Co-60 Less than 5.0 E+OO Ru-103 Less than 5.5 E+OO Sb-125 Less than 2.8 E+Ol Cs-137 3.9 + 3.4 E+OO Pb-212. Less than 2.4 E+Ol Pb-214 Less than 2.5 E+Ol Bi-214

• Less than 2.0 E+Ol Ra-226 Less than 2.4 E+02 4.0-86

JAMES RIVER WATER SAMPLES.

SEMI-ANNUAL COMPOSITE (picocuries per liter)

Enriched Tritium Chickahominy

• 2. 1 + 1. 3 E+02 Newport News 2.9 + 1.2 E+02 4.0-87

SILT SAMPLES (picocuries per kilogram dry) e Date Discharge Hog Island Point Collected 9-9-75 9~9-75 Sample Weight Dry . 0. 1045 kg 0.110 kg Gamma Spectrometry Be-7.

• Less than 1. 7 E+03 1.1 + 1.0 E+03 K-40 1.4 + 0.3 E+04 1.2 + 0.4 E+04 Cr-51 1.*7 + 1.4\E+03 Less than 1.9 E+03 Mn-54 1. 6 + 1. 2 E+02 Less than 1.7 E+02 Co-58 2. 3 + 1. 3 E+02 1. 6 + l. 2 E+02

• **co-60 .4. 7 + 1. 4 E+02 3. 0 + 1. 2 E+02 Nb-95 Less than 1.7 E+02 Less than 1.6 E+02

\

Zr-95 Less than 2.7 E+02 Less than 2.6 E+02 Sb-125 Less than 5.4 E+02 3.6 + 3.4 E+02 Cs-134 3. 6 + 1. 1 E+02 Less than 1.8 E+02 Cs-137 1. 1 + 0. 2 E+03 5. 3 + 1. 4 E+02 Hg"".203. Less than 2.3 E+02 Less than 2.2 E+02 Tl-208 2.7 +

' - 2.1 E+02 3. 5 + 1.-8 E+02 Bi-212 1. 7 + 1.5 E+03 Less than 2.1 E+OJ Pb-212 1.3 + 0.4 E+03 .1.8 + 0.4 E+03 Pb-214 9.9 + 4.1 E+02 7. 2 + 4. 1 E+02 Bi-214 5.3 + 4.5 E+02 1.0 + 0.4 E+03 r _.

Ra~226 *6.5 + 3.9 E+03 Less than 5.5 E+03 Ac-228 .1. 2 + 0. 9 E+03

• 1. 6 + 0. 7 *E+03 4.0-88

. (I

)

SILT SAMPLES (picocuries per kilogram dry)

Point of Shoals Chickahominy Date Collected 9-17.;.75 9-17-75 Sample Weight Dry 0.121 kg 0.097 kg Gamma Spectrometry Be-7 Less than 1. 5 E+03 Less .than 1. 8 E+03 K-40 1. 3 + 0. 3 E+04 1. 6 + 0. 3 E+04 Cr-51 Less than 1. 8 E+03 Less* than 2.3 E+03 Mn-54 Less than 1. 5 E+02 Less than 1. 9 E+02 Co-58 Less than 1. 6 E+02 Less than 2.0 E+02 Co-60 1. 2 + 0. 8 E+02 Less than 1. 5 E+02 Nb-95 Less than 1. 5 E+02. Less than 1. 8 E+02 Zr-95 Le-ss than 2.3 E+02 Less than 2.9 E+02 Sb-125 Less than 4.6 E+02 Less than 5.8 E+02 Cs-134 Less than 1. 6 E+02 Less than 2.0 E+02 Cs-137 7. 2 + 1. 7 E+02 1.0 + 0.2 E+03 Hg-203 Less than 2.0 E+02 Less than 2.5 E+02 Tl-208 2. 1 + 1. 6 E+02 3. 0 + 1. 9 E+02 Bi-212 Less than 1~9 E+03 Less than 2.4 E+03 Pb-212 1.7 + 0.4 E+03 1 ..8 + 0 . 4 E+O 3 Pb-214 8.6 + 3.3 E+02 1. ,3 + 0. 4 E+03

• Bi-214 Less than 4.1 E+02 1.2 + 0.4 E+03 Ra-226 Less than 5.1 E+03 7.1 + 4.4 E+03

• Ac-228 1.0 + 0.7 E+03 1.4 + 0.9 E+03 e

4.0-89

e SILT SAMPLES (picocuries per kilogram dry)

Newpo_rt News Date Collected 9-30-75 Sample Weight Dry 0.111 kg Gamma Spectrometry Be-7 Less than 1.6 E+03 K-40

• 1. 6 + 0. 3 E+04 Cr-51 Less than 9.0 E+03 Mn-54 Less than 1. 7 E+02 Co-58 Less than 1. 8 E+02 Co-60 1. 6 + 1. 0 E+O 2 Nb-95 Less than 1. 6 E+02 ,

Zr-95 Less than 2.5 E+02 Sb-125 Less than 5.0 E+02 Cs-134 Less than 1. 8 E+02 Cs-137 8.4 + 2.0 E+02 Hg-203 Less than 2.2 E+02 Tl-208 3 ~ 2 + 1. 5 E+02 Bi-212 Less than 2.1 E+03 Pb-212 9.8 + 4.1 E+02 Pb-214 1.1 + 0.4 E+03 Bi-214 6 ~ 9 + 3. 3 E+02 Ra-226 Less than 5.6 E+03 Ac-228 9.7 + - 7.4 E+02 4,0-90

- OYSTER*SAMPLES

., (picocuries per kilogram wet)

Newport News* Point of Shoals Date Collected 7-28-75 .7-28-75 Sample Weight Dry/Wet. 0.044/0.412 kg 0.028/0.420 kg Gamma Spectrometry K-40 Less than 7.2 E+02 Less than 6.. 2 E+02 Mn-54 Less than 1. 4 E+Ol 1. 3 +

• 0 . 9 E+O 1 Co-58 Less than 2.3 E+Ol Less than 2.3 E+Ol Co-60 Less than 3.5 E+Ol Less than 1. 8 E+Ol Sb-125

• Less than 1.2 E+02 Less than 1. 2 E+02 Cs-137 Less than 3.0 E+Ol Less than 3.5 E+Ol Tl-208 Less 'than 3.6 E+Ol Less than 5.3 E+Ol Pb-212 Less than 1. 2 E+02 Less than 1. 2 E+02 Pb-214 Less than 6.7 E+Ol Less than 6.6 E+Ol Bi-214 Less than 9.3 E+Ol 9.7 + 9.7 E+Ol Ra-226 Less than 1. 3 E+03 Less than 1.3 E+03

• Sample part of *VEPCo split program. VEPCo/State/AEC.

\

e 4.0-91

/j

OYSTER SAMPLES (picocuries per kilogram wet)

Deep Water Shoals Date Collected 7-28-75 Sample Weight

.Dry/Wet 0.0255/0.428 kg Gamma Spectrometry K-40 5.1 + 4.0 E+04 Mn-54* Less than 1.3 E+o1*;.

Co-58* . 2 . 4 + 1. 5 E+O 1 Co-60 Less than 1. 8 E+Ol Sb-125 Less than 1.2 E+02 Cs-137 *1. 7 +

. - 1. 7 E+O 1 Tl-208 Less than 4.6 E+Ol Pb-212 Less than 1. 2 E+02 Pb-214 Less than 6.5 E+Ol Bi-214 .6. 0 + 6. 0 E+O 1

.Ra-226 Less than 1.3 E+03 4.0-92

OYSTER SAMPLES*

• (picocuries per kilogram wet) e Date Deep Water Shoals Point of Shoals Collected 9-17-75 9-17-75 Sample Weight Dry/Wet 0.023/0.334 0.023/0.293 Gamma S:eectrometry K-40 Less than 4.6 E+02 5.8 + 3.8 E+02 Mn-54 Less than 1. 7 E+Ol Less than 8.7 E+02 Co-58 . Less than 2.9 E+Ol Less than 3.3 E+Ol Co-60 Less than 2.3 E+Ol Less than 2.6 E+Ol Sb-125 Less than 9.6 E+Ol Less than 1. 7 E+02 Cs-137

• Less than 2.3 E+Ol 3.8 + 2.3 E+Ol Tf-208 *. Less than 6.6 E+Ol Less than 7.6 E+Ol Pb-212 *Less than 6.9 E+Ol Less .than 1. 7 E+02 Pb-214 Less than 8.3 E+Ol Less than 9.4 E+Ol Bi-214 Less than 1.1 E+02 Less than 1. 3 E+02 Ra-226 Less than 7.6 E+02 Less than 1.9 E+03 4.0-93

- Qate OYSTER SAMPLE (picocuries per kilogram wet)

• Newport News Received 9-29-75 Sample Weight Dry/Wet 0.067/0.5567 kg Gamma Spectrometry K-40 .

• 1.0 + 0.4 E+03 Mn-54 1. 8 + 1. 5 E+Ol

- r Co-58 Less than 3.1 E+Ol Co-60 Less than 2.5 E+Ol Sb-125 Less than 5.8 E+Ol Cs-137 3.9 + 2.0 E+Ol Tl-208 . Less than 3.3 E+Ol .

Pb.;.212 Less than 9.6 E+Ol Pb-214 Less than 8.6 E+Ol Bi-214 Less than 1. 8 E+02 Ra-226 Less than 1. 0 E+03 4,0-94

- Pate Collected :i-1-17-75 OYSTER SAMPLES (picocuries per kilogram wet)

Newport News Point of Shoals 11-18-75 Sample Weight Dry/Wet 0.045/0.2885 *0.03010.3935 Gamma S;eectrometry Be-7 1. 8 + 1. 2 E+02 Less than 2.7 E+02 K-40 4.0 + 3.6 E+02 9.9 + 4.6 E+02 Cr-~.1

• 2. 3 + 1. 4 E+02 Less than 3.1 E+02 Co-58 Less than 1.6 E+Ol 2.8 + 1.6 E+Ol Ru-103 1.8 + 1.6 E+Ol Less .than 3.6 E+Ol Ag-llOm *. Less than 2.6 E+Ol 3.0 + 2.6 E+Ol Sb-125 Less* than 3.9 E+Ol Less than 1. 3 E+02 Cs-137 Less than 2.9 E+Ol Less than 4.1 E+Ol Pb-212 Less than 8.5 E+Ol Less than 1. 3 E+03 Pb-214 Less than 3.5 E+Ol Less than 1. 3 E+02 Bi-214 Less than 9.3 E+Ol Less than 8.9 E+Ol Ra-226 Less than 3.2 E+02 Less than 1. 4 E+03 .

4.0-95

OYSTER SAMPLES (picocuries per kilogram wet)

Deep Water Shoals Date Collected 11-18-75 Sample Weight_

Dry/Wet

• 0.019/0.3125 Gamma Spectro~etry Be-7 Less than 4. 3 E+02 K-40 6.6 + 3.4 E+02 Cr-51 Less than 5.0 E+02 Co-58 Less than 3.8 E+Ol Ru-103

• Less than 5. 7 E+Ol Ag-llOm Less than 6.1 E+Ol Sb-125 Less than 9. 2 E+Ol' Cs-137 Less than 2.9 E+Ol Pb-212 Less than 2.0 E+02 Pb-214 Less than 8.2 E+Ol Bi-214 Less than 2.2 E+02 Ra-226 Less than 7.6 E+02 4.0-96

e

• CLAM SAMPLES (picocuries per kilogram.)

Station Discharge Jamestown Date Collected 7-17-75 7-17-75 Sample Weight

. Dry/Wet I

0.058/0.7985 kg 0.040/~.643 kg Gamma Spectrometry Be-7 Less than 1. 5 E+02 Less than 1. 9 E+02 K-40 6. 3 + 2. 8 E+o2*

• 6. 9 + 2 . 7 E+02 Mn-54 Less than 6.2 E+Ol Less than 7.7 E+Ol Co-58 Less than 2.2 E+Ol 2.2 + 1.8 E+Ol Co-60 4.8 +/- 1.6 E+Ol 2.3 + 1.4 E+Ol Nb-95 Less than 1. 7 E+Ol Less than 2.1 E+Ol Ru-103 Less than 1. 3 E+Ol Less than 1. 6 E+Ol I-131 Less than 6.4 E+Ol 2.8 + 2 . .7 E+Ol Cs-134 Less than 2.1 E+Ol Less than 2.7 E+Ol Cs-137 4. 4 + 1. 6 E+O 1 3. 7 + 1. 9 E+Ol Ba-140 Le.ss than 6.4 E+Ol Less.than 8~0 E+Ol La-140 Less than 6.4 E+Ol Less.than 8.0 E+Ol Ce-141 Less than 6.0 E+Ol Less than 8.9 E+Ol Ce-144 1. 6 + 1. 6 E+02 Less than 3.0 E+02 Tl-208 Less than 2.3 E+Ol Less than 3.1 E+Ol Pb-212 Less than 7.6 E+Ol Less*

. than 9.6 E+Ol Pb-214 Less than 6.0 E+Ol 7.2 + 6.5 E+Ol Bi-214 Less than 6. 3 E+O.l* Less than 9.8 E+Ol Ra-226 Less than 8.4 E+02 i.ess than 9.0 E+02 4.0-97

e* CLAM SAMPLES (picocuries per kilogram)

• Hog Island Point Date Collected 7-17-75 Sample Weight Dry/Wet 0.044/0.833 kg Gannna Spectrometry Be-7 Less than 1.4 E+02 K-40 4.8 + 2.5 E+02 Mn-54 Less than 6.0 E+Ol Co-58 7.8 + 2.0 E+Ol Co-60 8.5 + 2.1 E+Ol Nb-95 Less than 1. 6 E+Ol Ru-103

• Less than 1. 2 E+Ol.

I-131 Less than 6.2 E+Ol Cs-134 Less than 2.1 E+Ol Cs-137 3.1 + L 9 E+Ol

'J3a .. 140 Less than 6.2 E+Ol La-140 Less than 6.2 E+Ol Ce-141 Less than 5.8 E+Ol Ce-144 Less than 2.3 E+Ol Tl-208 Less than 2.2 E+Ol Pb-212 *Less than 7.3 E+Ol .

Pb-214 . Less than 5.7 E+Ol Bi-214 Less than 7.9 E+Ol Ra-226 Less than 8.6 E+02 4.0-98

CLAM SAMPLES (picocuries per kilogram wet)

Lawnes Creek Chickahominy

-Date Collected 7-28-75 7-31~ 75 Sample Weight Dry/Wet 0.0345/0.318 kg o. 0530/0. 500 kg_

Gannna SEectronietry Be-7 Less than 3.8 E+02 Less than 2.4 E+02 K-40 6.5 + 4.2 E+02 Less than 3.4 E+02 Mn-54 Less than 1. 6 E+02 Less than 1. 0 E+02 Co-58 Less than 5.4 E+Ol Less than 3.5 E+Ol Co-60 Less than 4.4 E+Ol Less than 2.8 E+Ol Nb-95 Less than 4.3 E+Ol Less than 2.7 E+Ol Ru-103 Less than 3.2 E+Ol Less than 2.0 E+Ol

• 1-131 Less than 1. 6 E+02 Less than 1.0 E+02 Cs-134 Less than 5.4 E+Ol Less than 3.4 E+ol Cs-137 2.8 + 2.1 E+Ol Less than 2.8 E+Ol Ba-140 Less than 1. 6 E+02 Less than 1. 0 E+02 La-.140 Less than 1. 6 E+02 Less than 1. 0 E+02 Ce-141 Less than 1.5 E+02 Less than 9.6 E+Ol Ce-144 Less than 6.0 E+Ol Less than 3.8 E+Ol Tl-208 Less than 5.8 E+Ol Less than 3.0 E+Ol Pb-212 Less than 1. 5 E+02 Less than 9.2 E+Ol Pb-214 - Less than 1. 5 E+02 Les*s than 9.5 E+Ol Bi-214 1. 6 + 1. 4 E+02 Less than 2.1 E+02 Ra-226 Less than 1. 7 E+03 Less than 1. 2 E+03 4.0-99

CLAM SAMPLES (picocuries per kilogram wet) e Date.

. Hog Point Station Chickahominy Collected 9-17-75 9-17-75 Sample Weight J;)ry/Wet 0.0185/0.2235 kg 0.024/0.2435 kg Gannna SEectrometry K-40 Less than 6.6 E+02 3.4 + 3.0 E+02 Mn-54 Less than 3.1 E+Ol 3.7 + 1.6 E+Ol Co-58 7.9 + 3.0 E+Ol. Less than 3.7 E+Ol Co-60 7~2 + 3.4 E+Ol 3.2 +.2.6 E+Ol Sb-125 Less .than 1. 7 E+02 Less than 1. 3 E+02 I-131 Less than 1.5 E+02 3.3 + 0.8 E+02 Cs-134

• Less than 4.7 E+Ol 3.0 + 2.4 E+Ol Cs-137 Less than 4.8 E+Ol Less than 3.8 E+Ol Ba-140 *Less *than 1.4 E+02 Less than 1.1 E+02 La-140 Less than 9.5 E+Ol 9.9 + 7~1 E+Ol*

Tl-208 Less than 2.6 E+Ol Less than 2.0 E+Ol Bi-212 3.3 + 3.1 E+02 Less than 3.6 E+02 Pb-212 Less than 1. 0 E+02 Less than 9.7 E+Ol Pb-214 Less than 1. 5 E+02 Less than 1. 2 E+02 Bi-214 Less than 7.5 E+Ol Less than 5.8 E+Ol Ra-226 Less than 1. 5 E+03 Less than 1. 2 E+03

• Corrected to time of colletion using Ba-140. half life.

4.0-100

e* CLAM SAMPLES (picocuries per kilogram ~et)

Lawnes Creek Date tollected ~-17-75 Samle Weight Pry/Wet 0.022/0.2095 kg Gamma Spectrometry K-40 Less than 6.2 E+02 Mn-54 Less than 2.6 E+Ol Co-58 3.3 + 2.3 E+Ol Co-60 Less than 4.2 E+Ol Sb-125 Less than 1.4 E+02 I-131

• Less than 1. 3 E+02 Cs-134 Less than 3.9 E+Ol Cs-137 Less than 3.7 E+Ol Ba-140 Less than 1. 2 E+02 La-140 Less than 8.0 E+Ol Tl-208

• Less than 2. 2 E+Ol Bi-212 Less than 3.9 E+02 Pb-212 Less than 1.2 E+02 Pb-214 Less than 1.3 E+02 Bi-214 Less than 6.3 E+Ol Ra-226 Less than 1.3 E+03 4.0-101

CLAM SAMPLES e (picocuries per kilogram wet)

Station Discharge Jamestown Island Date Collected 9~15-75 9-15--75 Sample Weight Dry /Wet o. 0355/0. 5739 kg . 0.022/0.3869 kg Gamma Spectrometry Be-7 1. 4 + 1. 4 E+02 Less than 3.1 E+02 K-40 . 5. 4 + 2. 6 E+02 5. 7 + 3.5 E+02 Mn-54 Less than 8. 7 E+Ol Less than 1.3 E+02 Co-58 6.2 + 2.0 E+Ol 4.1 + 2.5 E+Ol Co-60 4.2 + 1.8 E+Ol 4.9 + 2.4 E+Ol Nb-95 Less than 2.4 E+Ol Less than 3.5 E+Ol Ru-103 Less than 1.8 E+Ol Less than 2.6 E+Ol I-131 3. 4 + 0. 6 E+02 2. 2 + 0. 8 E+02 Cs-134 3.4 + 2.0 E+Ol Less .than 4.4 E+Ol Cs-137 6.5 + 2.2 E+Ol 3.5 + 3.4 E+Ol Ba-140 1.5 + 0. 6 E+ol Less than 1.3 E+02 La-140 9.5 + 0.6 E+ol Less than 1.3 E+02 Ce-141 Less than 8.4 E+Ol Less than 1.2 E+02 Ce-144 2. 2 + 1. 6 E+02 Less than 4.9 E+Ol Tl-208 Less than 3. 2 E+Ol Less than 4.2 E+Ol Pb-212 Less than 9.0 E+Ol Less than 1.2 E+02 Pb-214 Less than 8.3 E+Ol Less than 1.2 E+02 Bi-214 Less than 1.8 E+02 Less than 2.7 E+02 Ra-226 Less than 1.0 E+03 Less than 1.5 E+03

• Decayed to time of collection using Ba-140 half life.

4.0-102

CLAM SAMPLES

• • e (picocuries per kilogram wet)

Jamestown Station Discharge Date Collected 11-17-75 11-17-75 Sample Weight Dry/Wet 0.023/0.3890 kg_ .. o. 0235/0. 2944* kg Ganuna Spectrometry K-40 2.5 + 2.0 E+02 Less than 3.6 E+02

.Co-58 3 . 6 + 1. 5 E+O 1 *1.7 + 0.4 E+02 Co-60 Less than 2.2 E+Ol 1. 0 + 0. 3 E+02 Ru-103 Less than 1.6 E+Ol Less than 1. 6 E+Ol Sb-125 Less than 7.8 E+Ol Less than 9.9 E+Ol Cs-134 2 . 1 + 1. 4 E+O 1 3.0 + 2.7 E+Ol Cs-137 1. 9 + 0. 9 E+Ol 9.9 + 2.9 E+Ol Tl-208 Less than 2. 4 E+Ol. Less than 2 . .4 E+Ol Bi-212. Less than J. 9 E+02 Less than 3.8 E+02 Pb..;.212 Less than 6.1 E+Ql Less than 8.2 E+Ol Pb-214 Less than 7 .*3 E+Ol Less than 7.3 .E+Ol Ra-226 Less than 6.5 E+02 Less than 6.4 E+02

• ('

4,0-103

CLAM SAMPLES (picocuries per kilogram wet)

. Lawnes* Creek Ho*g Island Point D.ate c*ollected 11-18-75 11-17-75 Sample Weight Dry/Wet 0.0225/0.3620 0.022/0.3311 Gamma SEectrome'try.

K-40 Less than 3.8 E+02 Less than 5.0 E+02 Co-58 Less than 2.3 E+Ol 1. 0 + 0. 2 E+02 Co-60 Less than 2.2 E+Ol

.. 4. 3 + 2 .1 E+Ol Ru-103 1. 2 + 1.1 E+o1* Less than 1. 7 E+Ol Sb-125 Less than 7.7 E+Ol Less thari 7~9 E+Ol Cs-134 Less than 2.1 E+Ol Less than 2.2 E+Ol Cs~l37 .

• 1. 9 + 1. 4 E+Ol *Less than 3. 5 E+Ol Tl-208

• Less than 2.5 E+Ol Less than 2.5 E+Ol Bi-212 Less than 4. 0 E+02 Less than 4.0 E+Ol Pb-212 Less than 6.4 E+Ol Less than 6.2 E+Ol Pb-214 Less *than 7.5 E+Ol Less than 7.9 E+Ol R~-226 Less than 6.8 E+02 Less than 7.4 E+02 4,0-104

CLAM SAMPLES (picocuries per kilogram wet)

Chickahominy Date Coliected *11-17-75 Sample Weight Dry/Wet 0.0195/0.3085 GaIIIIlla Spectrometry K-40 Less than 4.4 E+02 Co-58 7.4 + 3.0 E+Ol

• Co-60 l.,ess than 3.0 E+Ol Ru-103 Less than 1. 9 E+Ol Sb-125 Less than 8.9 E+Ol Cs-134 Less than 2.5 E+Ol Cs-137

• 3.7 + 2.1 E+Ol Tl-208 Less than 2.9 E+Ol Bi-212 Less than 4.6 E+02 Pb-212 Less than 3.6 E+02 Pb-214

• Less than 8.7 E+Ol Ra-226 Less than 7.7 E+02

• ,'f/

4.0*105

• CRAB SAMPLE

• (picocuries per kilogram wet)

Crab at Station Intake Date Collected 7-31-75 Sample Weight Dry/Wet . 0.0625/0.383 kg Gamma Spectrometry K-40 2.1 + 0.6 E+03 Cs-137 4.7 + 3.1 E+Ol Pb-212 Less than 1.3 E+o2 Ra-226 Less than 1.4 E+03 4.0-106

CRAB SAMPLE (picocuries per kilogram wet)

Crab at Station Intake

• bate Collected 8-20-75 Sample Weight Dry/Wet 0.036/0.270 kg Gamma Spectrometry K-40 2.9 + 0.8 E+03 Ru-106 Less than 3.6 E+02 Sb-125 Less than 1. 9 E+02 Cs-137 3.5 + 2.8 E+Ol Pb-212 *tess than 1. 8 E+02 Pb-214 Less than 1. 7 E+02 Bi-214 Less than 2.1 E+02

FISH SAMPLES .

(picocuries per kilogram wet)

• Station In take

.VEP-SI-Fish Date Collected 8-20-75 Sample Weight Dry/Wet 0.0195/0.048 kg Gamma Spectrometry K-40 . 1. 5 + 2. 6 E+03 Cs-137 2

• 0 + 1. 4 E+02 Tl-208 Less than 2.8 E+02 Pb-212 Less than 9.9 E+02 Pb-214 Less than 9.6 E+02

.4.0-108