ML20087L341

Notifies of Minor Change in Discharge or Mgt of Pollutants at Plant

ML20087L341
Person / Time
Site:	North Anna
Issue date:	08/21/1995
From:	Marshall B VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	Pandey J VIRGINIA, COMMONWEALTH OF
References
NUDOCS 9508250159
Download: ML20087L341 (3)

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RETURN RECEIPT REQUESTED '

VIftGINIA POWEft August 21,1995 Janardan R. Pandey Valley Regional Office Department of Environmental Quality P. O. Box 268 Bridgewater, VA 22812 Re: North Anna Power Station - VPDES Permit No. VA0052451

Change in Discharge or Management of Pollutants

Dear Dr. Pandey:

As Daniel James of my staff has discussed with you, this is to notify you of a minor change in discharge or management of pollutants at North Anna Power Station. These changes involve the use of two new discharge piping routes identified in our current permit application as Steam Generator Blowdown, Units 1 and 2, and subsequently are designated in the draft permit as Outfalls 112 and 113.

t Steam generators were recently replaced at the station and improvements were made in the ancillary systems, that include steam generator blowdown, to improve the life of the steam generators. The upgrades will result in an increase in flow rates from the blowdowns and require that they be rerouted from the clarifier discharge (currently Outfall 003) to separate discharges. It was earlier anticipated that the changes would occur after the reissuance of the VPDES permit but the upgrades will be completed ahead of schedule and it will be necessary to implement operation of the new discharge routings on or about September 1,1995.

In evaluation of the changes with respect to the requirements of Part 111 of the current VPDES permit, we note the following issues:

Notification of the changes were made via the application for reissuance of the i

VPDES permit that is currently in process. The new discharge routes are reflected in the draft permit.

The discharges are intemal to the main station discharge to state waters and enter the cooling water flow in the same vicinity as the current internal outfall through i

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which the blowdowns have previously discharged. Subsequent discharge to state waters will be via the same outfall es authorized in the current permit.

No new pollutants will be introduced, either internally or at the ultimate discharge to state waters. No significant increases in either concentrations or volumes of contaminants previously identified will be involved.

There will be no substantial change in volume or character of pollutants being introduced. The changes will constitute only minor alterations in internal management of flow routes and an insignificant level of increase in flow rate.

No activities associated with these changes are expected to occur that will result in any discharge of any toxic pollutant, either limited by the permit or not.

In consideration of the above issues in interpretation of the requirements of Part til of the current permit, it would appear that the implementation of the imminent change in discharge or management of pollutants should be acceptable without modification of the current permit or other formal action. Your concurrence to clarify the issue would be appreciated.

Further, the new discharge outfall designations, as indicated in the current draft permit, are anticipated to be included in the reissued permit. To allay any concerns over the discharges until the reissuance of the permit, we propose to limit and monitor the Steam Generator Blowdown discharges in accordance with the draft requirements and report those data with the station's routine DMR submittals.

Should you desire additional information or have any questions, please contact Daniel James at (804)273-2996.

Sincerely, i

B. M. Marshall, P.E.

Manager Water Quality DLJ/mhs

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l cc: U.S., Nuclear Regulatory Commission Region ll 101 Marietta St., NW Suite 2900 Atlanta, GA 30323 Re: North Anna Units 1 & 2 Docket Nos. 50-338/50-339 License Nos. NPF-4/NPF-7 U.S.' Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 .

Re: ' North Anna Units 1 & 2 Docket Nos. 50-338/50-339 -

License Nos. NPF-4/NPF-7 Mr. R. D. McWhorter NRC Senior Resident inspector North Anna Power Station i

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