ML20042C507

NPDES Noncompliance Notification:On 820302,unknown Amount from Wastewater Collection Basin Discharged Into Catawba River.Wastewater Exceeded 9.0 Std Units Ph.Monitoring Frequency Increased.Excursion Caused by Photosynthecism

ML20042C507
Person / Time
Site:	McGuire
Issue date:	03/05/1982
From:	Haller W DUKE POWER CO.
To:	NORTH CAROLINA, STATE OF
References
NUDOCS 8203310465
Download: ML20042C507 (1)

Text

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,s: Si si' / Cff/sM Dunu Powun COMPANY STI?A31 l'ItODUCTION Dis!'T.

GI?NI?ItAI. OFFICl?S TELEPHONE: AREA 704 P. o. sox sa t se 422 SOUTH CHURCH STREET 373 401:

CHAHWM, .L C. 28243 March 5, 1982 ,

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North Carolina Department of Natural Resources and Community Development Division of Environmental Management s P.O. Box .27687 M Raleigh, N.C. 27611 -

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Subject:

McGuire Nuclear Station Noncompliance Notification hg

,f File: MC-704.21 f

Dear Sir:

In accordance with provisions set forth in the NPDES pennit for McGuire Nuclear Station under Part II, A(2), we hereby notify you of an indication of permit limitation exceedance at the subject power plant. The informa-tion required under Part II, A(2) follows: , m Description of Discharge d Wastewater collecton basin (discharge 005) to the Catawba River H. RECEWED {a Cause of Noncompliance

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The pH of the wastewater collection basin exceeded 9.0 standar' .

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Date and Time of Occurrence A pH of 9.1 standard units was recorded on March 2, 1982 at 1500 k.'1630 6' hours. -- ,a Anticipated Duration of Occurrence The maximum duration could have been 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />; however, the probable duration was less.

Prevention Efforts Monitoring frequency was increased.

Summary The pH of the wastewater collection basin exceeded 9.0 standard units on March 2, 1982. Based on previously noted cycling of pH on wann, sunny days, it is believed that this excursion was probably due to photosythetic activity.

Very truly yours, y hd W. A. Haller, Manager A

Technical & Environmental Services /

LWP/dj cc:\ Harold R. Denton Office of Nuclear' Reactor Regulation U.S. Nuclear Regulatory Commission 8203310465 020305 PDR ADOCK 05000369 PDR g

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