ML20205B867

NPDES Noncompliance Notification:During Jan 1987,total Phosphorus Samples from Discharge Point 501 Exceeded Limit. Caused by Sewerage Treatment Plant Not Being Able to Reduce Phosphorus Below Limit.Feed Rate of Ultrion Increased

ML20205B867
Person / Time
Site:	Peach Bottom
Issue date:	03/17/1987
From:	Leitch G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	PENNSYLVANIA, COMMONWEALTH OF
References
NUDOCS 8703300059
Download: ML20205B867 (2)

Text

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.. t PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 l

2:si s414ooo March 17, 1987 Department of Environmental Resources Bureau of Water Quality Management One Ararat Blvd.

Harrisburg, PA 17110

SUBJECT:

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

DESCRIPTION OF NONCOMPLIANCE:

The total phosphorus of samples from discharge point 501 (Sewage Treatment Plant) exceeded the permit limit for the monthly average and instantaneous maximum for January, 1987.

Date Sample Taken 1/7/87 1/28/87 Date Results Received: 1/29/87 2/11/87 Results of Analysis: 2.1 mg/l 5.9 mg/l Monthly Average Analysis: 4.0 mg/l Monthly Average Permit Limitation: 2.0 mg/l Monthly Average 4.0 mg/l Instantaneous Maximum CAUSE OF NONCOMPLIANCE:

The cause of the noncompliance is the sewage treatment plant is not able to reduce the phosphorus to below the permit limit.

DURATION OF NONCOMPLIANCE:

The duration of the noncompliance has continued since the receipt of the new permit limits in October, 1985 except for August and November, 1986.

CORRECTIVE ACTION:

During the month of January 1987, the feed rate of Ultrion was increased to approximattiy 15 ml/ min. Phosphorus levels and biological activity were monitored in an effort to preclude biological upsets. The average phosphorus level was 4.0 ppm (effluent). There have been no biological upsets during this period.

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PREVENTION OF FUTURE OCCURRENCES:

The recommendations from the October 1986 visit of BCM Eastern, Inc., are being implemented via site modification.

l The modification package has been approved by station management and the equipment has arrived on site. Preliminary work is scheduled to begin within a month. Completion of this project should provide better chemical control and better phosphorus removal.

Very truly yours, ,

-f y c- ) #

G. M. Leitch Manager Nuclear Generation Department GKB:ala

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cc: Environmental Protection Agency {

Water Permits Branch A Pennsylvania Section 3WMS2 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 l

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