ML20150E843

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Forwards Third Suppl to PSAR for Nuclear Reactor Proposed by PG&E to Construct & Operate at Diable Canyon Site,Containing Addl Technical Data Answering Commission Questions.W/O Encl
ML20150E843
Person / Time
Site: Diablo Canyon Pacific Gas & Electric icon.png
Issue date: 08/11/1967
From: Boyd R
US ATOMIC ENERGY COMMISSION (AEC)
To: Lemmon D
INTERIOR, DEPT. OF, GEOLOGICAL SURVEY
Shared Package
ML20150E784 List:
References
FOIA-88-187 NUDOCS 8807180005
Download: ML20150E843 (1)
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AUG11 M7 4RL Reading i .JB 2 Reading I

3 Orig: HSteele (2) l Decket No. 50-275 R. S. Boyd l

Tech. Reviewer l

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Mr. Dwight.M. Lammes l

/g Assistaat Chief enetagist l 'fe v.~ s. se*1estast servey.

s..sraeparenset of the anserter Eson 4214,M Smilding '

unsh,iestem,;,.O. S. ,20242, l

..4 Bear Mr.

l A copy of the Third guyptensat te thii Freliminary safety y Analysis Esport der 'tha muisteer remotor skich Pacific Gas and Electria cedpanj propssas-tii'*eenstract and operate at its Diable Canyme Sita ta' w1amad for yest use.

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1 Sincerely yours, Original signed by H. Steele i

i anger S. Boyd, Assistaat Director l for Basetor Frejects Division of Reactor Licensing Encleeures Third . Suppl. to P841 (Diable Canyes site) l omet > ...DRL1 -- - - * * -

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e< . UNITED STATES j si DEPARTMENT OF THE INTERIOR

J-W GEOLOGICAL SURVEY g'p W ASHI NGTON. D.C. 20242

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4 SEP 211967 8; Mr. Harold L. Price Director of Regulation g- U. S. Atomic Energy Comission v

-a 4915 St. Elmo Avenue Bethesda, Maryland 20545

Dear Mr. Price:

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Transmitted herewith in response to the request of Mr. Edson G. Case ..

y da'ed February 6,1967, is a review of the geologic and hydroloi;ic -

aspects of the liceue Application of. the Pacific Gas and Electric '

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' Company, Diablo Canyon Nuclear PlantyBite'., s-

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This review prepared by Henry W.qCoulter and Eric L. Meyer of.the,,_. '

Geological Survey has been discuafsIM vith members' of your staffTuid j ve have no objections to yo11r Wing it a part of the public record.

Sincerely yours,

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Actius Director Enclosures M

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y. b; O O lg Diablo Canyon Site AEC Docket 50-275 Hydrology The site is on the shore of the Pacif1:: Ocean in San Luis Obispo County, near the mouth of Diablo Canyon Creek. The reactor is to be located on a terrace on the left bank of the Creek at a grade altitude of 85 feet above mean sea level. Cooling water is to be obtained from an intake at the ocean south of the reactor and discharged about 1,200 g feet north of the intake. A spit of land extends about 1,000 feet into f the ocean between the intake and discharge points.

The reactor location would not be affected by floods of Diablo

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Canyon Creek, the only developed drainage nearby. The switchyard,

.i 3 however, is shown as occupying a part of the canyon where it could be j

affected by flooding.

1 There are no reports of ground water develognents in the vicinity M

i of the site. It does not appear that the reactor vould affect fresh- I

water resources of the area.

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The analysis of the geology of the Diablo Canyon Nuclear Plant Site

.j presented in A.E.C. Docket No. 50-275 sad supplements was reviewed and 2:

). . compared with the available literature, and the exploratory trenches h>: at the site vere examined on August 14--15, 1966. The analysis appears 0

to be carefully derived and to present an adequate appraisal of those

c. aspects of the geology which would be pertinent to an engineering I

evaluation of the site.'

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Minor foundation and sle. - 'ity problems which may require

- small scale design modificatio. --

tanticipated during the excava-tion phase of construction. Such L. ifications should be within the limits of standard engineering practice.

There are no identifiable geolcgic structures which could be expected to localize earthquakes in the immediate vicinity of the site.

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Henry W. Coulter Eric L. Meyer d,

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