ML20197B602

NPDES Noncompliance Notification:On 860422,biological Oxygen Demand of Composite Effluent Sample Exceeded Permit Limits. Caused by Introduction of Foreign Substance.Max Air Input to Generation Tanks & Return Sludge Provided

ML20197B602
Person / Time
Site:	Surry
Issue date:	05/02/1986
From:	Marshall B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Ronaldo Jenkins VIRGINIA, COMMONWEALTH OF
References
NUDOCS 8605130081
Download: ML20197B602 (1)

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Rkbuncl Yupnbs.UE>l vmemurower May 2, 1986 CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr. Ray R. Jenkins State Water Control Board Piedmont Regional Office 7 2201 West Broad Street '

Richmond, Virginia 23230 i

Surry Power Station - NPDES Permit Exception j

Dear Mr. Jenkins:

This is to confirm the information concerning the NPDES permit exception at our Surry Power Station that was previously reported to-you by telephone.

i On April 22, 1986, a composite sample of effluent from Outfall 011, the sewage treatment plant, was collected between 10:00 a.m. and 2:00 p.m. Analytical 4

1 results received on April 28 revealed a Biological Oxygen Demand (800 ) I 85.8 mg/1. This exceeds our permit limitation of 45.0 mg/1. 5 Station personnel believe this exception to have been caused by the introduction of a foreign substance, such as floor wax, to the station's sewage treatment system. As immediate corrective action, air to the skimmers and sludge holding tanks was cut off to provide the maximum air input for the aeration tanks and for return sludge. Also, the station has, as part of its annual training program instructed all employees and contractors not to introduce foreign materials to the sewage system, or station storm drains. We are currently considering measures to further reinforce this policy.

Should you desire any further information regarding this report, please let us know.

Sincerely, B. M. Marshall -

Manager ~

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cc: Dr. J. Nelson Grace, USNRC - Docket Nos. 50-280/50-281 / //

Mr. Harold R. Denton, USNRC - Docket Nos. 50-280/50-281V ' D Mr. Donald J. Burke, USNRC:- Docket Nos. 50-280/50-281 m wp- +-  %

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