GO2-18-104, Final Intake Screen Modeling Results

Final Intake Screen Modeling Results

ML18285A448
Person / Time
Site:	Columbia
Issue date:	09/26/2018
From:	Khounnala S Energy Northwest
To:	Graves R Document Control Desk, Office of Nuclear Reactor Regulation, National Marine Fisheries Service
References
DIC 0015.65, GO2-18-104
Download: ML18285A448 (2)

Text

ENERGY NORTHWEST September 26 , 2018 G02-18-104 DIC 0015.65 Mr. Richie Graves Columbia Hydropower Branch National Marine Fisheries Service 1201 NE Lloyd Blvd , Suite 1100 Portland , Oregon 97232

Dear Mr. Graves:

Shannon E. Khounnala Columb i a Generating Station P O Box 968 , MD PE03 Richland , WA 99352-0968 Ph. 509-377-8639 sekhounnala@energy-northwest.com US MAIL AND ELECTRONIC SUBMITIAL

Subject:

FINAL INT AKE SCREEN MODELING RESULTS FOR COLUMBIA GENERATING STATION (NRC DOCKET 50-397)

References:

1) Endangered Species Act Section 7(a)(2) Biological Opinion , and Stevens Fishery Conservation and Management Act Essential Fish Habitat Response for Renewing the Operating License for the Columbia Generating Station , Richland , Washington (NWR-2011-05286). 2) Letter , G02-18-011 , January 18. Letter to R Graves (National Marine Fisheries Service) from SE Khounnala (Energy Northwest). Intake Screen Modeling and Study Design for Columbia Generating Station. 2018 3) Letter , 802-18-073 , May 3. Letter to R Graves (National Marine Fisheries Service) from SE Khounnala (Energy Northwest). Intake Screen Modeling Results for Columbia Generating Station. 2018 Per Reference 1 , Biological Opinion , Section 2.d of the Terms and Conditions , I am writing to inform your agency that Energy Northwest has completed the computation fluid dynamics study of the Columbia Generating Stations (Columbia) intake screens and I am providing the required final report via this correspondence.

The modeling effort and results were completed based on the design approach outlined in Reference 2 and the initial report was provided to your agency staff for review (Reference 3). Energy Northwest and our contracting partners met with your agency on May 16 , 2018 to discuss this effort and the findings contained in the results report. Following our meeting and the opportunity to address questions and comments , Energy Northwest was informed that there were no substantive comments to the report and we were instructed to submit a formal hard copy to your agency and the Nuclear Regulatory Commission.

I would like to take the opportunity to thank your staff for the time and effort to complete the review and evaluation of the Computation Fluid Dynamics report and Columb i a's intake structures. Energy Northwest has removed notat i ons on the final report i ndicating the data within the report contained proprietary information. We are support i ve of us i ng the informat i on contained with i n the final document to advance knowledge , tra i n i ng , or decision making related to intake structures and fish protect i on. Again , thank you for your level of effort on this action. If you requ i re any addit i ona l i nformation , please contact me at (509) 377-8639.

Respectfully , 26/0 9/18 13: 00: 22 -07: 00 X Khounnala , Shannon E. ' Env i ro n me " Co sign Shannon E. Khounnala Environmental and Regulatory Programs Manager SEK/nb

Enclosure:

Computational Fluid Dynamics Analysis of Perforated Intake Screens at Columbia Generating Stat i on , April 2018. Cc: Briana Grange , NRC Lynne Krasnow , NMFS NRG Document Control Desk , US Mail Amy Moon , Energy Facility Site Evaluation Council , US Mail Ellie Keys , Washington Department of Ecology , US Mail Lynn Albin , Washington State Department of Health , US Mail Peggy Miller , Washington State Department o f Fish and Wildlife , US Mail INTERNAL DISTRIBUTION

SEK/lb FILE COPY Columb i a Files Docket File 964Y PE20