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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.3 JAN 23 1373 s

_.60-5o9..

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

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

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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

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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 of our questions and to furnish additional data and analyses.

i i

L.G.H man, Chief Hydrology-Meteorology Branch Division of Site Safety and Environmental Analysis cc: See next page j

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8605290318 760128 PDR ADOCK 05000508 A

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JAN 2 : T3 2

i W. E. Kreger l

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H. Denton R. Vollmer

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F. Miraglia T. Johnson l~

M. Masnik i

DISTRIBUTION:

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1. 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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