ML20234C002
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g UNITED STATES GOVERNMENT
~ Memorandum
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To Edson G. Case, Assistant Director
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Division of Licensing and Regulation rROM L. Kornblith, Jr., Assistant Director N
f],,M f r Reactors Division of Compliance j
SUBJ ECT : PACIFIC CAS AND ELECTRIC COMPANY (BODEGA BAY)
DOCKET NO. 50-205 Attached is a report by our field inspector of recent visits to the subject proposed facility site. A draf t copy of this report was l
forwarded to you on September 4,1963.
Our inspector had the following additional comments:
" Subsequent to the visits covered in this report, we were informed by Schlocker that the trench was 757. completed but that cave-in problems were being encountered as the trench excavation progressed into loose sandy soil in the southeast quadrant. To counter this further excavation progress was limited to 40 feet at a time and concrete pours completed I
for that section before continuing to excavate the next 40 feet. Schlocker intimated that this was interfering with his fault mapping activities somewhat, but not to a degree he considered to be significant. Forewarning of the cave-in problem was evidenced to us during our second visit when we observed that a cave-in had occurred at the last location we were studying during our first visit. Fortunately no one was in the trench when this occurred.
"All comments made to us by the U. S. geologists in the course of their study of the site excavations to date indicate a consistent picture of fault-free sediments overlying the bedrock on which the reactor will be built. Schlocker and Bonilla plan to continue mapping the reactor excavation down to the -73 ft.
elevation and to transpose the mapped data onto a plastic model of the shaft."
Attachment:
A Rpt by G. S. Spencer
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dtd 8/30/63
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/J Distribution:
l J. R. Sears, Region I (2) jQ M. L. Ernst, Region II
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H. D. Thornburg, Region III Y\\
J. W. Flora, Region IV
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R. H. Engelken, Region V
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- f<7 G. S. Spencer, Region V
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C. A. Nelson, INS, w/o attach.
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8709210140 851217 PDR FOIA FIRESTD85-665 PDR f,
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