ML20237G059

Forwards Review of Geologic & Hydrologic Aspects of PG&E License Application for Diablo Canyon Site,Per Eg Case 670206 Request

ML20237G059
Person / Time
Site:	Diablo Canyon
Issue date:	09/21/1967
From:	Baker A INTERIOR, DEPT. OF, GEOLOGICAL SURVEY
To:	Price H US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML20236J368	List: IA-87-214, Discusses ACRS 92nd Meeting on 671207-09.ACRS Completed Review of PG&E Application for Const of Nuclear Unit at Diablo Canyon Site.Facility Can Be Constructed W/O Risk to Public Health & Safety ML20236J366 ML20236J587 ML20236J622 ML20236J671 ML20236J804 ML20236J841 ML20236J985 ML20236K008 ML20236K057 ML20236K327 ML20236K351 ML20236K384 ML20236K422 ML20236K563 ML20236L228 ML20236L279 ML20236L316 ML20236L364 ML20236L420 ML20236L474 ML20236L565 ML20236L647 ML20236L689 ML20236L706 ML20236L724 ML20236L756 ML20236L787 ML20236L806 ML20236L866 ML20236L901 ML20236L922 ML20236L931 ML20236L986 ML20236M007 ML20236M024 ML20236M065 ML20236M681 ML20236M725 ML20236M744 ML20236M771 ML20236M777 ML20236N015 ML20236N032 ML20236N085 ML20236N115 ML20236N139 ML20236N193 ML20236N208 ML20236N255 ... further results
References
FOIA-87-214 3159, NUDOCS 8708130295
Download: ML20237G059 (3)

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,3 UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY WASHINGTON, o.C. 20242 SEP 211967 Mr. Harold L. Price Director of Regulation U. S. Atomic Energy Commission 4915 St. Elmo Avenue Bethesda, Maryland 20545

Dear Mr. Price:

Transmitted herewith in response to the requebt of Mr. Edson G. Case dated February 6,1%7, is a review of the geologic and hydrologic aspects of the license application of the Pacific Gas and Electric Company, Diablo Canyon Nuclear Plant Site.

This review prepared by Henry W. Coulter and Eric L. Meyer of the Geological Survey has been discussed with members of your staff and i

ve have no objections to your making it a part of the public record.

Sincerely yours,

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i Actin 8 Director Enclosures s

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CONNDR 67-gA A 7i' PDR

i Diablo~ Canyon Site AEC Docket 50-275 J

Hydrology The site is on the shore of the Pacific Ocean in San Luis Obispo County, near the mouth of Diablo Canyon Creek. The reactor'is to be a

located on a terrace on the left bank of the Creek at a grade altitude j

of 85 feet above mean sea level. Cooling water is to be obtained from I

I an intake at.the ocean south of the reactor and discharged about 1,200 feet north of the intake. A spit of land extends about.1,000 feet into the ocean between the intake and discharge points.

The reactor location would not be affected by floods of Diablo Canyon Creek, the only devebped draina6e nearby. The switchyard,-

I however, is shown as occupying a part of the canyon where it could be affected by flooding.

There are no reports of Ground water developments in the vicinity of the site. It does not appear that the reactor would affect fresh-i water resources of the area.

Geology The analysis of the geology of the Diablo Canyon Nuclear Plant Site presented in A.E.C. Docket No. 50-275 and supplements was reviewed and compared with the available literature, and the exploratory trenches at the site were examined on August 14--15, 1966. The analysis appears j

to be carefully derived and to present an adequate appraisal of those aspects of the geology which would be pertinent to an engineering evaluation of the site.

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Minor foundation and slope stability problems which may require small scele design modifications can be anticipated dvring the excava-i r

tion phase of construct 1,on.

Such modifications should be within the limits of standard engineering practice.

i There are no identifiable geolcgic structures whidh could be expected to localize earthquakes in the.immediate vic!..11ty of the site.

Henry W. Coulter Eric L. Meyer l

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