ML20205B848

NPDES Noncompliance Notification:During Feb 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

ML20205B848
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 8703300055
Download: ML20205B848 (2)

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PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 1215)8414000 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 for February,1987.

Date Sample Taken 2/4/87 2/26/87 Date Results Received: 2/17/87 3/10/87 Results of Analysis: 2.2 mg/l 2.7 mg/l Monthly Average Analysis: 2.4 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:

The feed rate of Ultrion has been increased to approximately 18 ml/ min. Phosphorus levels and biological activity were monitored in an effort to preclude biological upsets. The average phosphorus level was 2.4 ppm (effluent). There have been no biological upsets during this period.

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I e '4 PREVENTION OF FUTURE OCCURRENCES:

Continued monitoring of phosphorus and adjustments of l chemical feedrate has resulted in a decrease in effluent  ;

phosphorus levels for February over that of the December and  ;

January (4.8 ppm and 4.0 ppm). Installation of the site modifications to provide better chemical control and phosphorus removal is scheduled to begin within a month.

Very truly yours,

/

b G. M. Leitch Manager Nuclear Generation Department GKB:ala cc: Environmental Protection Agency Water Permits Branch Pennsylvania Section 3WM52 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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