ML20214T779

NPDES Noncompliance Notification:On 861024,pH Sample from Discharge Point 301 Exceeded Permit Limit.Caused by out-of- Svc Neutralizing Tank Ph Meter & Ph Meter for Raw Water Sump Which Drifted Out of Calibr.Raw Water Sump Ph Meter Calibr

ML20214T779
Person / Time
Site:	Peach Bottom
Issue date:	11/13/1986
From:	Leitch G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	PENNSYLVANIA, COMMONWEALTH OF
References
NUDOCS 8612090001
Download: ML20214T779 (2)

Text

50-I3I, m ,2.7W l .. n PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 (215)8414000 November 13, 1986 Department of Environmental Resources Bureau of Water Quality Management One Ararat Blvd.

Harr isburg, PA 17110

SUBJECT:

Noncompliance with NPDES Permit Peach Bottom Atomic Power Station Permit No. PA 0009733 Gentlemen:

DESCRIPTION OF NONCOMPLIANCE:

The pH of a sample from discharge point 301 (Wastewater Settling Basin) exceeded the permit limit.

Date Samples Taken 10/24/86 Date Results Received: 10/24/86 Results of Analysis: 9.3 Permit Limitation: 6.0 to 9.0 NOTE: According to discussions with the Department of Environ' mental Resources, the pH limitations for this internal monitoring point will be removed from the permit.

CAUSE OF NONCOMPLIANCE:

The cause of the noncompliance was an out of service neutralizing tank pH meter and a pH meter for the raw water sump which had drif ted out of calibration.

DURATION OF NONCOMPLIANCE:

The duration of noncompliance was approximately three hours.

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a s,~

• CORRECTIVE ACTION:

A check sample taken about one hour after the initial sample

- showed the same results. Four check samples, taken about 10 :30-11:00 at various places in the settling basin to prepare for neutralization, showed pH results of 7.6-8.6. As a result of these readings no further action was needed.

PREVENTION OF FUTURE OCCURRENCES The raw water sump pH meter was calibrated on October 24, 1986. The neutralizing sump meter was checked on November 6, 1986 and another maintenance request form was 4

submitted. The performance of these pH meters will be tracked via the water treatment plant chemistry , weekly data sheets.

Very truly yours,

(.  : v G. M. L tch Superintendent Nuclear Generation Division JAV/WTU:ala cc: Environmental Protection Agency Water Permits Branch Pennsylvania Cection 3WM52 1 , 841 Chestnut Building Philadelphia, Pennsylvania 19107 Director Office of Nuclear Reactor Regulation

US Nuclear Regulatory Commission

Washington, DC 20555 Administrator Region I Office of Inspection and Enforcement US Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406

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