ML20235H926
| ML20235H926 | |
| Person / Time | |
|---|---|
| Site: | Summer  |
| Issue date: | 07/07/1987 |
| From: | Nauman D SOUTH CAROLINA ELECTRIC & GAS CO. |
| To: | Kinney R SOUTH CAROLINA, STATE OF |
| References | |
| NUDOCS 8707150319 | |
| Download: ML20235H926 (14) | |
Text
6 l
So th ro ns Electric & Gas Company an A. N uman Clum a 29218 Nuclear Operations SCE&G J
~~
July 7, 1987 j
1 i
l Mr. Ron Kinney Emergency Response Section South Carolina Department of Health and Environmental Control j
2600 Bull Street l
Columbia, SC 29201
)
Subject:
Virgil C. Summer Nuclear Station i
Docket No. 50-395 Follow-Up Report
]
Fish Kill June 24 and 25, 1987 1
)
Dear Mr. Kinney:
I I
South Carolina Electric & Gas Company (SCE&G) herein submits the follow-up 1
report concerning the fish kill in the Virgil C. Summer Nuclear Station I
(VCSNS) discharge canal on June 24 and June 25, 1987. The enclosed report describes the events and the precipitating factors as determined by
)
investigations conducted thereafter.
1 In accordance with the VCSNS Operating License NPF-12, Appendix B, a copy of this report is being provided to the Nuclear Regulatory Commission. Should 1
l you require any further information, please contact me at your convenience.
trup ours, A
Na5 n
l DCB/ DAN:jez Enclosure l
c:
J. G. Connelly, Jr.
O. S. Bradham l
M. B. Williams W. R. Baehr S. E. Summer l
W. R. Higgins i
W.
F'.
Bacon I
~
- 0ccket Control Desko(NRC)'
}
T. E. Murley (NRC)
~
J. N. Grace (NRC)
NPCF g
File 801.25 8707150319 870707
! k DR ADOCK 05000395 l
a i
FISH KILL INVESTIGATION REPORT June 24-25, 1987 Environmental personnel discovered a fish kill in the VCSNS circulating water discharge canal area at approximately 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br /> on June 24, 1987. The subsequent investigation revealed 54 dead fish (see Figure 1) with the following species composition:
49 white catfish (most 100-200 mm total length) 3 channel catfish 1
largemouth bass (360 mm) 1 white bass (380 mm)
The fish, judging from their state of decomposition, appeared to have been dead for 12 to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Two water temperature and dissolved oxygen profiles were taken. The dissolved oxygen and temperature data are presented in Tables I and II.
Surface pH was measured at 7.4.
At 0815 hours0.00943 days <br />0.226 hours <br />0.00135 weeks <br />3.101075e-4 months <br /> on June 25, 1987, the discharge area was checked for dead fish.
Approximately 50 fish were noted, most in and around the discharge structure.
Most of these fish were identified as white catfish, whose sizes were comparable to the original observations; the remainder were channel catfish.
At 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br /> on June 25, 1987, the discharge area was again checked,80-100 fish were seen. At 1545 hours0.0179 days <br />0.429 hours <br />0.00255 weeks <br />5.878725e-4 months <br /> the discharge area was checked by boat.
Approximately 480 dead fish (see Figure 2) were seen, some of these were fish that had been seen on June 24, 1987. Of the dead fish, approximately 99%
were catfish, the majority of these being white catfish. A dissolved oxygen and temperature profile was taken; it is presented in Table III. The pH was 6.4.
This was probably influenced by the heavy rain which fell just prior to the measurements being taken.
Conductivity was 100-105 pmhos/cm.
The discharge canal area was again checked on June 26, 1987 at 1140 hours0.0132 days <br />0.317 hours <br />0.00188 weeks <br />4.3377e-4 months <br />.
Approximately 100 fish were seen, all from the previous day. No freshly killed fish were noted. Another temperature and dissolved oxygen profile was taken, it is presented in Table IV. The pH was measured as 7.05.
A summary of the concurrent meteorological conditions is included as Attachment II.
DISCUSSION The fish kill has been attributed to increased circulating water temperatures (see Figure 3) which trapped and ultimately killed fish in the discharge area.
It is possible that two separate kills occurred, one on June 23 and one on June 24 (assuming approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> for dead fish to float to the surface).
Circulation patterns in the discharge area combined with power plant operational changes can and have resulted in similar events. An eddy of cooler water exists which allows fish to become trapped as temperatures rise (see Figure 4). The absence of trauma or disease symptoms is additional evidence that the cause of the fish kill was thermal in nature. Also, no distressed fish were noted during any of the investigations, which implies a discrete kill event. No NPDES parameters were exceeded prior to or during
1
-s i
\\
the fish' kill, except for the alum sludge lagoon (discharge 006A, NPOES PermitSC0030856) which had pH readings exceeding 9.0 as previously reported in a letter to Mr. Steve Thomas on May 26, 1987. However, flows from this discharge are very small in comparison to the. circulating water flow.
The observed pH values in the area indicate that the alum sludge lagoon was not a contributing factor.to'the events.
Even though relatively large. numbers of fish were killed, the aquatic community in Monticello Reservoir should not be adversely affected due to the size and species which comprised the fish kill.
.)
I 4
i
1 Table 1 - Dissolved oxygen and temperature profile, location #1. 6/24/87.
Dissolved xygen Depth Temperature (*C)
Surface 39.1 7.8 1m 39.1 7.9 3m 39.1 8.0 Sm 39.0.
8.0 -
7m 38.8 8.0 Table 11 - Dissolved oxygen and temperature profile, location #2. 6/24/87 Depth Temperatu e (*C)
Dissolved 0xygen
( g, )
l Surface 38.3 7.8 2m 38.0 7.6 4m 37.4 7.6 8m 36.5 7.5-11m 35.7 7.2
+-
j Table ill-Temperature and Dissolved Oxygen Profile 6/25/87 f
d x Dissol g )ygen Depth Temperature ( C)
(
j Surface 37.0-6.7 2m 37.0
. 6.7 4m 36.7 6.7 6m 35.7 6.6 8m 34.0 6.3 l
3 Table IV - Temperature and Dissolved Oxygen Profile 6/26/87 Dissol d x Depth Temperature ( C)
( g,)ygen i
Surface 37.0 6.2 1
2m 36.5 6.2 1
4m 35.3 6.1 6m 34.5 6.0 8m 34.1 5.9 I
l i
.s___.
MONTICELLO RESERVOIR i
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R 1
i SERVICE WATER POND 1
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1 3C:, J.'sk l
CIRCULATING WATER DISCHARGE 6f24
&1 1660 - it'oo 0,@ - saap<.iu4 wariods Figure 1
.g 4
MONTICELLO RESERVOIR SERVICE WATER POND g
v Q
J-w
'7 M.--.
CIRCULATING WATER DISCHARGE 6/2$ f 8'1
,yu - n, r G) - SAM.PceDQ tcCAT10A)
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4 MONTICELLO RESERVOIR 1
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CIRCULATING WATER DISCHARGE Figure 4 E
l..
A ATTACHMENT l CHRONOLOGY OF FISH KILL INVESTIGATION 6/24/87-6/29/87
- 1500 6/23/87 Circ. Water Discharge Temp. Exceeds 104 F.
1300 6/24/87 Circ. Water Discharge Temp. Exceeds 104 F 1600 Circ. Water Discharge Temp. Exceeds 105 F l
Fish Kill Discovered 1700 Investigation in Progress 1845 Licensing Notified 1850 DHEC Contacted 1918 DHEC Returned Call 1925 Second DHEC Call (Bob Hudson) 0815 6/25/87 Additional Fish Noted Around Discharge Structure 0920 Call to DHEC (Enforcement)- A. Stanley l
0925 Call to DHEC (Enforcement)- A. Stanley l
0930 Call to Wildlife Dept. (Val Nash) f 1300 Additional Fish Noted Around Discharge Structure
(
1400 Call from A. Stanley 1410 Call to DHEC - Bill Krecker (EQM) 5 Day Written Report Required 1430 Call from DHEC - Butch Swygert DHEC would investigate 6/26/87 1545 Ch cked Discharge Area By Boat 480 Dead Fish Counted 0915 6/26/87 Checked Discharge - Very Few Fish 1100 Joey Rivers (DHEC) arrived. Situation explained. He did not want to look by boat.
1130 Checked Discharge Canal by Boat No Freshly Killed Fish 1300 6/29/87 Told by D. Blanks that Report Due After 10 Working Days per DHEC - Larry Boland
7 d
ATTACHMENT II (1 of 4) 1 i
l A
RuliTH C.'i R O L 1: N n 12 i ECTN IC Arm GM,
-'8,C 9! !MMI-R i i A l I fj N j
MET EOR OLo r; [C AL. DATA LISTING Fila: Mt TDAT Year:
'vH.
'~' : 4 5 : ? 4 a.m.
E,S,T Tho F5 Jon 19H7 1Y87 176 ti ? ! C.1 : 24. b ':
1 l o 'l. ~
wind wind d ri l t a temperature pro 3
tan dirnction s p e r'd temperature (dearees C) cip !
I dav mo/da hr:mi
( dear ees )
(mph)
(degrees F) ambi- # rt e u --
qain 61m 10m 61m 10m 10-61 10-40 ent p o :i n t (inch)
= =,===-
= = = :::.
_:=== :: = = ::: e===========
=====:=====:.==.========n:
a===
STATISTICS FOR I NT l4 R V AL. -
1 174 6/2/. 12:Oh 1987 < - - - - From l
175 6/24 18: 45 1987 < - - -
throuqh N o f' n o n m i >v. i n a intervals 132 1P2 122 1RP 116 116 122 Mean Average 7,21 4,79
-1,11
,10 26.91 39.7S
,0000 Standard Deviatann (N wt) 2.99 1,'73 1,11
.29 5.07 9.67
.0u01 Maximum Value 13.19 10,98 53
. 4 '/
~W e
.00 I
Minimum Value 1,45 1,82
-3.03
-1,10 15.s.s - W
,00 Range (Maxinon-Min 1 mum) 11,74 9.16 3.SS 1.57 4f ~7
/7tt-t11T
.00 i
1 Date or Maximum 6/23 6/P3 6/24 6/P4 6/24 6/24 6/23 {.
T1me oF Maximum 10:15 16: 30 01:1S 03:00 15:00 13:30 13:30 J
Date n r til n a mum 6/24 6/24 6/P4 6/24 6/24 6/24 6/23 i Time of Minimum 10: 45 10:45 10: 4b 18: 45 OY: 30 09: 30 13:15 I
5
< --- A t 61 metres 14 l
19
?
(N=
122) 11 5
l 4
9 4
2 g
3 P
i 1
i Per cent of I
2 1
0 9
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I 3 n t e r v a i c.
with I 5
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16 1
0 I Wind in seetor. 1 7
0 l
- 19 9
0
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n
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(N-122) 17 0
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?
At 10 m o t r n s --- >
2 0 /
0 /
0 Intervale, c a 'I m/ v a r v i n g /mi se,in q 0 /
0 /
0 l
A NH' ffW C'//I
-}70 +s7lv 1
l
4 ATTACHMENT II (2 of 4) l 1
SOUTH CAR 8 LINA a ECTRIC MH) G N4 -- U. C. SlJMMFR STATtRN METE 8R8L8G[ CAL DATA LISTINP Filn: METDAT-Year: 198; 7:42:41 a,n, E.S.T.
Thu 25 Jun 1987 1987 176 07: 42: 41. P 2 10 L-wind wind dnlta temperature pro-1an direction spend temp wature (dearees C) cap.
dav no/da hr:ni (dearees)
(mph)
( d a q r cm s F )
ambi-dnu-finore 61m 10m 61n 10n 10-61 10-40 ent point (inch)
=== = = = = ::- =.: = u ::-
= =
==r.
= = = =
=u
= = = = r::.======
=====v 174 6/23 12:00 230.1 234.5 9,31 7,12
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.0078 174 6/23 12:15 P34.9 232.7 8.94 6,37
-1.73
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.0078 174 6/23 12:30 P26.3 219,4 9.60 7.26
-2.39
.61 27,65 PR,92
.0078 1 '/ 4 6/23 12: 45 232,4 230,5 9.67 7.43
-1.76
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.007R-174 6/23 13t00 230,1 235.3 9 R6 "7,77
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.007H 174 6/23 13:15 226.5 234,9 8.42 7,'6 0
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-2.29
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-1,59
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- 21 10 26.97 24.3H
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08 26,77 23.98
.0076 174 6/23 20:30 217.9 210.5 10.11 4.94
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,0076 174 6/P3 P0:45 222,9 215.4 9.R6 4.14
.19
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,0078 174 6/23 21:00 222.8 218,8 10,24 3,86
.44
.36 25.88 24,06
.007H, 174 6/23 P1 15 174 6/23 21:30 216.2 204.1 12,4.3 6.05
.07
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.11 25.75
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, 0 0 "/ 8 174 6/23 22:15 217,9 205.3 11.46 5,51
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-.12
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.0078 174 6/23 23:00 232.2 233.5 8,98 4,54
,20
-,02 25,25 24,07
.0076 174 6/23 23:15 243.6 244.4 9,57 4.70
.25
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ATTACHMENT II (3 of 4)
\\
9f.111 TH C AR iR IN A FE T 9 :.C ANO r,08 v.n Rut 9mFP g it. T t Rt>
ME 1 E R R OLOG.flML DATA LISfiNG F 1.1 e ' (1E T DAT Year' 1 Y F-1 l
"'42: 45 a.m.
E.S,T.
Thu 25 Jun 19H7 1987 176 07: 42: 4 5. P. a 1
I inl-wtnd wi n ci cie l t a tempera t ore pre ]
tan direction s p o rt temperature
( rt e g r e rn C) cip
)
ri a u m o / cl a hrima
( d e ci r e e s )
( co p h )
( cl o ri r e e r. F) a m b :1 -
cl er h nore j 61m 10m 61 ro 10m 10-61 10-40 ent point
( 1.n r h ) l
-+
- -
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== = =: = =.c m:
- n. u - :: = ::: -:: = = :::: = m-
:=
- ::: = # -
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.007R 175 6/P4 00:15 PAR,7 232.6 9.93 5,08
.15
.05 24.37 P3,65
.0076 I 1"5 6/24 00'30 2 41,3 237,1 9,89 R,01
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.007H l 175 6/P4 00: 45 P39.7 P35,P 8.96 4,57
.19
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.007x 175 6/P4 11 15 336.9 321,9 4.00 3,47
-1,94
.01 28, 41 37,88
.00VR 175 6/24 11,30 347,9 352,7 3,87 4,14
-2.1P
.33 2H,91 3R,6P
.007. l 175 6/P4 11:45 346.6 342,4 2.99 3,71
-- 2. 6 0
.03 29.01 38,A7
.0 nYe {
4 dafa )n d d
7 ATTACIDIENT II (4 of 4) c F.Ut1M E R ST Artf #
4 00UTH C AR f]L [N A ELECTRIC AND Gas - V, C.
ME I EllROLOGlC AL DATA. LISTING-Fi:1 e : ME1DAT Year. 19 fC 7:42 49 a.m.
E,S,T.
Thu 25 Jun 19R7 1987 1'76 07:42: 4 9. 2. "
sul-wind wi n ci et e:l t a temperature pre i ian direction sp eert -
temperature
( cl e ri r e e e, C) cap. i dav s o /rl a hr:mi (degrees)
(mph)
(donrees F) a m b :) -
rie w-F i o u r e,,
61m 10m 61n 10m 10-61 10-40 ent point finch) ]
r==
- :-m=
= -:
-, rs = =.;== u = = =: =
==r==.
= = = -
175 6/24 12:00- 337.4 33R,8 4.11 4.11
-2,67-
,08 29.12 40,17
.007H 175 6/24 12:15 344.7 342.R 4,73 4.83
-2,26 44 P9.09 41,23
.0079 1 1'75 6/24 12:30 342.6 339 R 3.65
'3,89
-2,55
.OR 29,44 41,SH
,007H 175 6/P4 12: 45 340.6 3 45.8 2'.25 3.08
-2.70
.02 29.79.42.31
.0078 1'75 6/24 13:00 333.7 338.2 2,14 2.98
-2,97
,03 30.13 nP.3h
.007R 1Y5 6/24 13:15 338.3'357,0 2.P0 2.79
-2,70
.03 30.80 43,00
.0078-175 6/24 13:30 335.6 7.4 2.44 2,70
-2,2P
.04 31.40 45.97
.007R 1 "' S 6/P4 13: 45 A99.0 354.7 2.13 2.61
-2.A6
,13 31. 2 3 -42.73
.0078 175 6/P4 14: 00 349.8 2,6 2,64 2.91
-2,43
-,10 31,46 43.95
.007A i
I 175 6/24 14:15 348.5 349.1 3.00 3.39
-2.68
.04 30,92 43.71.
.0078 I 173 6/24 14: 30 3ht,7 358.6 2.98 3.37
-2,42
.02-31 31
'44,20
.0076 175 6/24 14: 45 9.9 3.6 2.74 3.16
-2.54
.15 31'. 5 3 44.24
. 0 0Y8 1 175 6/?4 15:00 7.8 13,1 2,27 2,43
-2,57
,20 32,'17 43,9H
.0078 4
175 6/P4 15:15 344.2 2,6 2.74 2.99
-2.78
.34 31. 8 4 43.93
. 0 078 l 175 6/24 16:30 338.3 2.9 3,79 3,93
-2,35
,15 31,79 44,54
,0076' 1 '/5 6/24 15: 45 345.7 339,5 3.96 3,88
-2,45
.17 31.07 44,19
. 0 07B ;
175 6/24 16:00 340.8 335,0 4.38 4.37
-2,36
,19 31,06 44',87
.0076' 1 "/ S 6/24 16:15 345.3 353,2 3,n5 3.34
-2.47
.34 A1.54 44.63
.0078 175 6/24 16t30 355.3 35R.8 3.41 3,77
-2.09
,16 31,72 4S.00
.007a 1?S 6/24 16: 45 346,5 348.5 4.31 4.'16
-1.95
,08 31. 21 44.73
. O u?8 q l
175 6/24 17:00 346.3 347,1 4,95 4.74
-2.01
.18 31.06 44 33
.0n76 1'75 6/24 17:15 342.0 339.2 5.10 4,84
-1.72
.13 - 30.91 43, 43
.00?8 175 6/P4 17:30 339.3 342.9 3.94 3,95
- 1. 8 0 -
47 31.03 43,RH
.0n7H t 1 ?S 6/P4 17:45 3H5.6 3P2.3 3.62 3,06
-1,54
,58 30.74 44,17
. 0 fr/6
$75 6/24 18:00 342.5 346.P 2.44
?,43
-1.45
,7R 30,8P 43,76
.0078 175 6/P4 18:15 NO,2 40.6 2,83 2.51
-1,HP
,62 30,73 43,18
,11 0 7 6 q 175 6/24 18:30 33,5 32,6 2,34 2.59
.9R
,75 30,51 4P,R4
.007H ]
175 6/M4 18: 45 31R.5 14.R 2.51 2.68
,98
-1,10 30.56 42.96
. 0 0'74 1 175 6/24 19: 00 1
17b 6/24 19:15 1
175 6/24 19:30 175 6/P4 19:45 l
]
175 6/24 20:00 175 6/M4 P0:15 175 6/24 20:30 175 6/24 20:45 175 6/24 21:00 175 6/24 P1:15 175 6/24 21130 175 6/R4 P1: 45 175 6/24 22:00 175 6/?4 PP 15 175 6/24 22:30 175 6/34 PP:45 175 6/P4 23t00 175 6/P4 23:15 175 6/24 23:30 175 h/M4 23:45 l
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