ML20198G242

Submits Review of Util Response to Request for Info Re App I,Provided in Suppl 6 to Environ Rept.Response Inadequate to Realistically Assess Liquid Transport Processes.No Municipal or Drinking Use of Downstream Water Found

ML20198G242
Person / Time
Site:	Satsop
Issue date:	01/28/1976
From:	Hulman L Office of Nuclear Reactor Regulation
To:	Kreger W NRC
References
CON-WNP-1258 NUDOCS 8605290318
Download: ML20198G242 (3)

Text

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JAN 23 1373 . _ , - . .

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W. E. Kreger, Chief, Radiological Assessment Branch ,

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! WPPSS 3 & 5, APPENDIX I LIQUID PATHWAY CALCULATIONS We have reviewed the applicant's response to requested Appendix I

, information, which was provided in Supplement 6 to the ER. We l conclude that these responses are inadequate for us to realistically assess liquid transport processes to within 50 miles downstraa:n of i

the plant site. We find it net.essary, therefore, to use conservative

} calculational procedures. The applicant apparently concluded that i providing this additional infermation is not justified; they conclude p' that their conservative calcuiations demonstrate compliance with l l

r Appendix I. -

~ . ~ .

The enclosed table summarizes downstream water use on the Chehalis l

River. Based on the limited data provided by the applicant, we compute ,

i average Chehalis River dilution factors for all downstream surface i water users to be 1100, 340, 80, 690, and 550 for calendar quarters

i 1, 2, 3, 4, and annually, respectively.~ M ee dilution factors are

!' based on a continuous average discharge rate of 12 cfs from the

plant.1 Duanto, lack.of data regarding tidal influences, we are unable to estimate a set of realistic travel times to the users; therefore,

the travel times provided in the enclosed table have been conservatively estimated assuming a mean river velocity of 4 miles per hour. The above i dilution factors and travel times also apply to fish-catch locations i other than at the diffuser, where a dilution factor of 1 and a travel

/ time of zero should be assumed.

. l We find that there is no municipal or drinking use of Chehalis River

, water downstream of the plant.

If it is determined that additional refinements in our calculations will i be necessary, the applicant will be required to fully respond to all i of our questions and to furnish additional data and analyses.

i ,

L.G.H man, Chief

• ' Hydrology-Meteorology Branch Division of Site Safety and Environmental Analysis

! cc: See next page j s!

8605290318 760128 PDR ADOCK 05000508 A PDR

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I i W. E. Kreger -

2 - JAN 2 : T3 l

I cc: H. Denton R. Vollmer }

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! M. Parsont l J. Norris i F. Miraglia

- T. Johnson l~ M. Masnik i

DISTRIBUTION:

CENTRAL FILE I NRR E RDG HMB RDG f

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Form MC 318 (Rev. 9 53) AECM P240 # u. s. eovsanuant enintime orrics ie74.see see

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ser- Location downstream Travel Time Type of Use Amount of of diffuser from Diffuser Use

1. Willis 500 feet- 1.5 min. Irrigation .45 cf3

2. E11enberger 1500 feet 4 min. Irrigation .25 cfs

3. Riipinen & 3 miles 45 min. Irrigation 1.0 cfs Riipinen

4. Turner 6 miles 1.5 hrs. Irrigation ,25 cfs

• 5. Weyerhauser 20 miles 5 hrs. industrial 12.2 efs Company

• Potential pathway since paper . products are manufactured here.

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