ML20128A626

NPDES Noncompliance Notification:On 850612-18,fecal Coliform in Sewage Treatment Sys Discharge Exceeded Weekly Average of 2000/ml.Caused by Chlorine Demand in Tertiary Treatment Pond.Chlorine Contact Chamber Planned to Replace Pond

ML20128A626
Person / Time
Site:	McGuire, Mcguire
Issue date:	06/24/1985
From:	Haller W DUKE POWER CO.
To:	NORTH CAROLINA, STATE OF
References
NUDOCS 8507020734
Download: ML20128A626 (2)

Text

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f DUKE POWER GOMPANY NUGLEAR PRODUGTION DEPARTMENT P.O. DOX 33180,422 MOUTH CIfURCII HTHEET CitARLOTTE, N.C. 28242 (704) 373-4011 June 24, 1985 i

Division of Environmental Management Water Quality Section P.O. Box 27687 Raleigh, NC 27611 J

SUdJECT: Noncompliance Notification McGuire Nuc1 car Station FILE: MC-704.20

Dear Sir:

This is to notify you of a noncompliance incident at McGuire Nuclear Station.

Information related to the incident is as follows:

Discharge The discharge was the sewage treatment system discharge (discharge 003).

Cause The fecal coliform exceeded weekly average of' 2000/ml.

Date Dates were the week of June 12-18, 1985.

Prevention The current tertiary treatment pond is to be replaced with an appropri-ately sized chlorine contact chamber.

Summary-The tertiary treatment pond (TTP) provides too long a residence fo the sewage treatment effluent. With the hot, sunny weather, algae has ' pro-liferated. The chlorine demand of the TTP has increased until a residual cannot be maintained in the effluent.

Consequently, the fecal coliform weekly average was 2400/ml. The new chlorine contact chamber should al-leviate these problems.

Sincerely, W. A. Ha!ler, Manager f

Nuclear Technical Services

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t I E j

8507020734 850624 PDR ADOCK 05000369 S

PDR

Division of Environmental Management Water Quality Section

SUBJECT:

Noncompliance Notification June 24, 1985 Page 2 WTG/LPH/wmc cc: Rex Gleason Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.

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