ML20237H375

NPDES Noncompliance Notification:Between 870726-0803 Temp Noncompliances Occurred in Plant Discharge Canal. Noncompliances Resulted from Unusually High River Temps & Continued Hot Weather Conditions

ML20237H375
Person / Time
Site:	Cooper
Issue date:	08/14/1987
From:	La'Toya Cooper NEBRASKA PUBLIC POWER DISTRICT
To:	Ringenberg J NEBRASKA, STATE OF
References
NUDOCS 8708240445
Download: ML20237H375 (3)

Text

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x GENcRAL OFFICE

Nebraska Public Power District " ~ * "%e#~"e%#*2A'#"**

August 14, 1987

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Mr. Jay D. Ringenberg Section Head, Permits and Compliance Water Quality Division Nebraska Department of Environmental Control P.O. Box 94877 Lincoln, Nebraska 68509-4877

Subject:

Nebraska Public Power District (NPPD)

Cooper Nuclear Station (CNS)

NPDES Permit No. NE 0001244 Noncompliance Report This letter confirms our telephone notifications to your department of temperature noncompliance occurring between July 26 and August 3, 1987 in the Cooper Nuclear Station's (CNS's) discharge canal (discharge 001). Attached is a tabulation of periods of noncompliance which exceeded the daily maximum temperature limitation of 103 F.

As I explained during my telephone discussion with you, the noncompliance were the result of unusually high river temperatures, together with continued hot weather conditions resulting in a high load demand for CNS. The noncompliance on July 26 occarred when a circulating water pump was removed ,

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from service to backwash the condenser. A noncompliance has not occurred since August 4, 1987 as the result of changes in weather conditions which have resulted in the temperature of the Missouri River to return to a more normal range.

I appreciate your understanding of the situation, and will j keep your department informed of any subsequent excess l temperature excursion due to adversa weather and river j temperatures.

8708240445 870814 PDR ADDCK 05000298

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[ Mr.'J. D. Ringenberg August 14, 1987.

. .Page Two-If you have.any questions regarding this response, please contact me.

n Sincerely, L. John Cocper Environmental Manager .

EYC/c1 Attachment cc: R. W/ Enclosure D.. Long O. Martin!

W. F w/ Enclosure G. R. Horn w/ Enclosure J. R. Warren' w/ Enclosure File CB175 w/ Enclosure i

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l Cooper Nuclear Station Discharge Canal (Discharge 001)

Temperatures in Excess of 103 F Max. Discharge River Date Time Temp. (F) Temp. (F)

July 26, 1987 0200 - 0400 104 83 July 30, 1987 0100 - 2400 104 86 July 31, 1987 0000 - 0400 104 86 ,

l July 31, 1987. 1200 - 2400 105 86 August 1, 1987 0000 - 0600 105 86 August 1, 1987 1100 - 2400 105 86

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August 2, 1987 0000 - 0100 105 87 August 2, 1987 0500 - 2400 105 87 August 3, 1987 0000 - 2300 105 87 i

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