ML20137B511

NPDES Noncompliance Notification:On 850810,analysis of Grab Sample Taken from Outfall 002 (Gas Turbine Oil Tank Dike), Revealed Ph Less than Allowed 6.0 Std Units.Probably Caused by Rainwater.No Corrective Actions Planned

ML20137B511
Person / Time
Site:	Surry
Issue date:	08/13/1985
From:	Taylor J VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Ronaldo Jenkins VIRGINIA, COMMONWEALTH OF
References
NUDOCS 8508220037
Download: ML20137B511 (2)

Text

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A VIRGINIA POWER August 13, 1985 .

CERTIFIED MAIL RETURN RECEIPT REQUESTED Mr. Ray R. Jenkins Virginia Water Control Board 2201 West Broad Street Richmond, Virginia 23230 Surry Power Station - NPDES Permit Exception

Dear Mr. Jenkins:

This is to confirm the NPDES permit exception at our Surry Power Station that was reported to you on August 12, 1985.

Analysis of a grab sample taken from Outfall 002, the Gas Turbine Oil Tank Dike on August 10 at 4:30 p.m. revealed a pH of 5.5. This is outside of the pH range of 6.0 to 9.0 standard units, which is allowed.in our NPDES permit.

As stated in our ccmments prior to permit reissuance in April of this year, no processes or inputs which might affect pH occur at this outfall. The diked area is designed.to contain an oil spill which might occur from this tank.

There has never been a spill from this tank, and the only input to this diked -

area is rainwater. As indicated during permit discussions with Virginia Water Control Board personnel, there is substantial data to demonstrate that naturally occurring rainwater often possesses a pH of less than 6.0.

Therefore we feel that this exception is the result of naturally occurring phenomena and do not plan any corrective action.

To date station personnel have been unable to obtain valid rainwater samples for comparison with Outfall 002 discharges. As per your August 12 discussion with Bruce Easley of this department, sample collection methods will be reevaluated, and efforts to obtain data to identify the low pH source will be continued.

8508220037 850813 PDR ADOCK 05000280 S pop

i Mr. Ray R. Jenkins Page No. 2 August 13, 1985.

Should you have any questions regarding this exception, please do not. hesitate-to contact.this department.

Very truly yours,

,s_h$1 John A. Taylor, Ph.D.

Manager Water Quality' cc: Dr. J. Nelson Grace, USNRC - Docket Nos. 50-280/50-281 Mr. Harold R. Centon, USNRC - Docket Nos. 50-280/50-281' Mr. Donald R. Burke, USNRC - Docket Nos. 50-280/50-281 0591.020BWE1893

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