ML20072B776

Comments on Environ Rept - OL Stage.Calculations Utilizing Recent Data,Scheduled Shutdowns in Summertime Only & Rev to Support Conclusion for Downstream Phytoplankton Sites Recommended

ML20072B776
Person / Time
Site:	Beaver Valley
Issue date:	06/09/1983
From:	Kulp C INTERIOR, DEPT. OF, FISH & WILDLIFE SERVICE
To:	Mcintire W DUQUESNE LIGHT CO.
References
ER-83-673, NUDOCS 8306140365
Download: ML20072B776 (2)

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UNITED STATES 8 '

DEPARTMENT OF THE INTERIOR

'd h FISH AND WILDLIFE SERVICE l

%- Suite 322 ,

ER 3/673 315 South Allen Street State College, PA 16801 e

June 9, 1983  ;

go-Wz h Mr. Wayne McIntire Duquesne Light Company Beaver Valley Power Station  ;

P.O. Box 4 Shippingport, PA 15077  :

Dear Mr. McIntire:

The Department has requested that we comment directly to you on the' Environmental Report Operating License Stage for the Beaver Valley Power Station Unit 2, Shippingport, Beaver County, Pennsylvania. This provides technical assistance only and does not constitute the review comments of the Department of the Interior on the forthcoming application for.an operating license.

The environmental report adequately describes existing fish and L wildife resources within the project area and, in general, the adverse impacts which may occur to those resources. There are only three areas of concern to us which are not adequately addressed in the report.

The report states (page 2.2-4) that upstream phy to pl a nk to n sites have consistently shown higher counts than downstream sites.

However, it concludes that the-power plant has not caused the decline downstream. The report does not provide evidence or an explanation to support this conclusion and should be revised accordingly.

The fish collection data show an increase in the abundance of sport fishes in the Cumberland pool through 1980. In l Section 5.1.3.1 of the report, impingement estimates were calculated from data for the period 1976-80. If the trend toward increased numbers of sport fishes continues, this would af fect your impingement estimates. Therefore, we recommend that calculations be made with the most recent fish impingement data.

8306140365 830609 C

PDR ADOCK 05000412 PDR l lj 0

Section 5.1.3.3 discusses impacts from increased water temperatures on resident fishes but is silent about potential adverse impacts from reverse thermal shock during winter shut-downs. A temperature drop of 300 F in winter would kill most fish within the discharge temperature plume. Therefore, we recommend all scheduled shutdowns be accomplished during the summer when water temperature differences are minimal. Only emergency shut-downs should be performed during colder weather. We recommend the report be amended to discuss the potential adverse impacts from cold weather shutdowns.

Sincerely, f

Charles J Kulp Field Supervisor cc:

PFC - Miller PGC - Sitlinger g , Washington, D.C.

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