U-601011, Submits Environ Event Rept Re 870803 Significant Fish Kill in Discharge Canal.Caused by High Temps in Canal.Fish Kill Did Not Have Significant Impact on Environ of Lake & No Corrective Actions Required
| ML20237L686 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 08/17/1987 |
| From: | Spangenberg F ILLINOIS POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| U-601011, NUDOCS 8708200300 | |
| Download: ML20237L686 (2) | |
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U-601011 L30-87 (08-17) -L~'
1A.120 ILLIN0/S POWER COMPANY IP CLINTON POWER STAtl0N, P.O. BOX 678. CLINTON. ILLINOIS 61727 August 17, 1987 Docket No. 50-461
~ Nuclear. Regulatory Commission Document Control Desk Washington, D.C.
20555 Subj ect: Clinton Power Station Environmental Event Report
Dear Sir:
-On August 4, 1987, Illinois Power notified the Nuclear Regulatory Commission (NRC) of a significant fish kill in accordance with Section 4.1 of Appendix B (Environmental Protection Plan) to Facility License i
No. NPF-62.
In accordance with Section 5.4.2 of Appendix B, attached is i
a report on this event.
If you need any additional information,-please contact me.
Sincerely yours, F. A. Sp r gent(rg, III /
Manager - Licegising ancySafety DW/krm Attachment l
cc:
B. L. Siegel, NRC Clinton Licensing Project Manager l
NRC Resident Office Regional Administrator, Region III, USNRC Illinois Department of Nuclear Safety DO K k1
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i s
U-601011' L30-87 ( 08-17)-L 1A.120 t
Attachment
.On August 3, 1987, the Illinois Power Field Biology Laboratory was not1fied.of a fish kill in the discharge canal.
Field Biology Laboratory personnel investigated and found approximately 1700 to 2500 dead fish. The fish species observed were white crappie, gizzard shad, black bu11 heads, bluegill, channel catfish, carp, various minnows, and Conservation (IDOC) and the Nuclear Regulatory Commission (NRC) were fresh-water mussels. On August 4, 1987, the Illinois Department of notified of the incident.
The investigation into this event determined that on August 3 and R
4, 1987, Clinton Power Station (CPS) was generally operating between 55%
and:75% power. The water temperatures in the discharge canal were
)
approximately 100*F from July 31, 1987, through August 3, 1987. These.
j temperatures exceeded the short-term maximum temperature for fish which j
had established _ residence in the discharge canal and caused the death of the fish.
This fish kill is similar to the one which was reported to the.NRC j
on July 9, 1987.
It involved resident fish in the discharge canal and did not affect fish in Clinton Lake. The discharge canal is not intended to support fish and temperatures in the canal are not subject to regulation until the water enters Clinton Lake. There are two.(2) drop structures in the canal which are designed to exclude fish. The fish in the canal were entrained through pumps as larvae or juveniles, entered the canal, grew, matured, and reproduced in the canal area over several years.
Temperatures in the canal were not abnormal. The kill of resident fish in the canal was inevitable and could not have been prevented. The fish kill did not have a significant environmental impact to Clinton Lake, but it was judged to be an unusual environmental event because of the potential for a negative public. relations impact.
During the investigation, several hundred live fish were observed in the discharge canal. When the water temperatures in the discharge canal are over 95'F for an extended period of time, fish kills will occur until the resident fish population is depleted.
The IDOC was verbally informed of the results of the investigation, t
They took note of the incident, and we understand that they intended to report it to the Illinois Environmental Protection Agency (IEPA). No written reports are required to be submitted to IDOC or IEPA.
In summary, the fish kill was caused by the high water temperatures in the discharge canal. The event was inevitable because fish are not i
supposed to be in the canal. The fish kill did not have a significant impact on the environment of the lake, and no corrective actions are
- required, l'
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