ML20212M195
| ML20212M195 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Diablo Canyon |
| Issue date: | 03/31/1975 |
| From: | Hofmann R Office of Nuclear Reactor Regulation |
| To: | Gammill W Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20150F500 | List:
|
| References | |
| FOIA-86-391 NUDOCS 8608250409 | |
| Download: ML20212M195 (2) | |
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J2 CN FRES MAR 31 1975 NRR-RDG SAB W1114== P. Gammill, Chief, Site Analysis Branch TR THRU:
J. C. Stepp, Leader, Geology & Seismology Section, SAB, TR INFORMAL MEMD RE: TELEPHONE CONVERSATION WITH DOUGLAS HAMILTON OF EARTH SCIENCE ASSOCIATES (CONSULTANTS TO PG&E RE: DIABLO CANYON POWER PLANT).
DATE: 24 March 1975 To keep you informed of progress on the Diablo Canyon work, a summary of my 1:00 pm call to Douglas Hamilton follows.
After our trip to Houston of 18 and 19 of March to observe Shell Oil Co.
and Western Geophysical Company data, D. Hamilton and C. R. Willingham were to integrate recently released or soon-to-be released USGS offshore seismic data with their previous work. They were to keep in mind the Shell data we observed and the availability of Western Geophysical data.
EisWN Progress to date:
(1) Track charts of the Western Geophysical data and of the Shall data that was shown to us have been added to a master track chart of the area. Thus duplication of coverage can be determined.
(2) Hamilton is recommending to PG&E that all Western data south of the latitude of Arroyo Grande be purchased and that line 12 opposite the site be purchased with additional processing eg. restacking, l
special filtering and migration. The latter will help establish I
the precise location of the "Hosgri" fault offshore from the plant.
(3) The U.S.G.S.1972 Bartlett cruise data has been ordered and should l
merive in microfilm-form tomorrow. Several days will be required I
to enlarge it to a working paper size. This is the data that was collected and analyzed under the direction of Eli Silver and Roland Von Huene.
(4) The U.S.G.S.1972 or earlier Polaris Cruise Seismic data has been requested. However, they have been informed that the data will not be released for several weeka. This data was collected under the direction of Holly Wagner and Steve Wolfe.
There are three imirnnwns'in the time table of required events which will effect the completion of a combined analysis of all data.
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8 William P. Gammill MAR 31 1975 1.
When will the Polaris data become available?
e 2.
When can the Shell data be observed?
3.
When will they receive the Western Geophysical data.
The last item is presently of the least concern.
Carl Stepp has proposed a meeting at Menlo Park with um=41 ton, Yorkes McKuen, Von Huene and us to review progress to data. Hm=fiton believes such a meeting could be held but without the Polaris information.
Renner B. Hofmann Seismologist Site Analysis Branch Division of Technical Review gg Office of Nuclear Reactor Regulation cc:
H. Denton F. Schroeder D. Allison O. Parr
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