ML20212M272

Forwards Proposed Agenda for Planned Meeting W/Util to Discuss Results of USGS Review of Site Geology & Seismology

ML20212M272
Person / Time
Site:	05000000, Diablo Canyon
Issue date:	01/21/1976
From:	Gammill W Office of Nuclear Reactor Regulation
To:	Deyoung R Office of Nuclear Reactor Regulation
Shared Package
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References
FOIA-86-391 NUDOCS 8608250428
Download: ML20212M272 (3)

Text

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JAN 21 1976 e

SO-MS R. C. DeYoung, Assistant Director i

for Light Water Reactors. PM ANTICIPATED MEETING WITH APPLICANT - USGS GEOLOGIC AND SEISMIC REVIEW Enclosed is a proposed agenda for the plannad meeting with Pacific Gas and Electric to discuss the results of the USGS review of geology and seismology of the Diablo Canyon Site. We plan to meet with Bill L-)nblad tomorrow in San Francisco to discuss the agenda and agree upon a meeting date.

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OriginalSigned %-

vo'+iesels W. P. Gammill William P. r'e== mill, Assistant Director for Site Technology Division of Site Safety and Environmental Analysis

Enclosure:

As stated cc w/ encl:

R. Boyd O. Parr D. Allison H. Denton J. Stepp 1

l R. Hofmann I

DISTRIBUTION:

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PROPOSED AGENDA USGS - APPLICANT MEETING DIABLO CANYON 1.

Detailed discussion of each profile intersecting or possibly intersecting the Hosgri fault near its Southern termination

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as mapped by Hoskins and Griffith 1970 or USGS other than in published or open file maps.

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2.

Discussion of all doctamentable phenomenon regarding the i

northern end of the fault and possible connection with the

+e-San Simeon e.g. borings and the stratigraphic relationship recently proposed by Hall.

3.

The epicenter and error associated with an unweighted solution M

of all seismic data for the 1927 Pt. Arguello earthquake.

4.

The accuracies of P times given in the IS*, ISC or BCIS for data used in the 1927 re-solution.

5.

The effect of gaps in azimuthal coverage and the critical dependence on data at about 340*, pointed out by Engdahl, on th'e shape of the 95% confidence areas over the proposed epicenters.

6.

Reconcilliation of Intensity contours and proposed locations of the M-7.25 1927 Pt. Arguello earthquake.

7.

Reconcilliation of the maximum Intensity observed with the proposed epicenters of the M=7.25, 1927 Pt. Arguello earthquake.

8.

Discussion of attenuation and method of specification of design accelerations or other parameters.

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