ML20148D379

Advises That No Final Conclusions Can Be Drawn from 780824 Meeting at Facility Re Seismic Studies at Plant Site

ML20148D379
Person / Time
Site:	Vallecitos File:GEH Hitachi icon.png
Issue date:	08/25/1978
From:	Thompson G STANFORD UNIV., STANFORD, CA
To:	Savio R Advisory Committee on Reactor Safeguards
References
ACRS-CT-1036, NUDOCS 7811020313
Download: ML20148D379 (1)

Text

STANFORD UNIVERS11.x 1

STANFORI), CALIFORNIA 94305 MENT OF GroPilYSICS 1 of Lard Socnces August 25, 1978 l

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RWm S.Wmps U.S. n ?, t Mr. Richard Savio Advisory Committee on Reactor Safeguards AUG 29 mp l

U. S. Nuclear Regulatory Commission Washington, DC 20555 3.p l

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Dear Dick:

PDR hA/,7 As requested, I met with NRC, USGS, and GE representatives at the Vallecitos Nuclear Facility on 8-24, in company with Ben Page.

Proposals for trenching, possibly seismic profiling, and possibly drilling to resolve questions about faults and land-slides were discussed in depth. These plans are well thought out an'd hdyc a good chance of resolving the prob 1 cms.

It was a productive meeting, although no final conclusions can be drawn.

I'd like to reserve further comments pending rcccipt of the,back-Bround geologic material.

Ben and I also spent a couple of hours in the field looking at rock exposures, examin.ng the evidence regarding faulting, and sccing how the proposed trenches may pi down the questions.

f Sincerely,

/2 (, \\ y4 db'A '(f p /' George A. Thompson Professor of Geophysics GAT /md. 78M.C?. o 3/ 3 l l .}}