ML19326C752

Forwards Review of Geologic & Hydrologic Aspects of Proposed Site in Response to Rs Boyd Request

ML19326C752
Person / Time
Site:	Arkansas Nuclear
Issue date:	08/16/1968
From:	Baker A INTERIOR, DEPT. OF, GEOLOGICAL SURVEY
To:	Price H US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8004280686
Download: ML19326C752 (3)

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~ DATE OF DOCUPMNT! DATE hECEIVED NO.

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$Q.313 CESCdle TION: 4 Mvst 8e unchssdee l REFERRED TO DATE RECEIVED BY DATE Ltr tras the following as requested by Mr. Roger S. Boyd: Newell B-19 v/2 cys for .11; TION ENCLOSURE 3:

Review of the geologic and hydrologi n ine n,copien toi hPpecta of the site for the H. Prich a S%ff Rusaallville Nuclect Stction merinA;,hrnuwe Karsa[Engw/ Orig 4;: 3 cys (2 cys rec'd) mg Levine , ,

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'i2 Mr. Harold L. Price E=

Director of Regulation . . . . _

-U. S. Atomic Energy Commission U: .==

4915 St.'Elmo Avenue ==

Eethesda, Maryland 20545

Dear Mr. Price:

Transmitted herew'.th in response to a request by Mr. Roger S. Boyd is . p.; .2;;

a review of geologic and hydrologic aspects of the site for the Russelville d' ..

Nuclear Station proposed by the Arkansas Power and Light Company. [ _ . .,...

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The review was. prepared by H. H. Waldron and E.L. Meyer and has been discussed with members of your staff. We have no objection to your T making this review a part of the public record. _

Sincerely yours,  : =.= ;

DSw ( '+

ActingD irector

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Ausselville. Nuclear Unit Pope; County, ' Arkansas AEC Docket '50-313 r -

Hvdroloev

[ The site'is located on the left bank of the Arkansas River 6 miles

. upstream from Dardanelle Lock and Dam No. 10. The plant site grade at

-353 feet ms1 -(above mean sea level) is 15 feet above the normal operating -

level of Dardanelle Reservoir.

Flood stages, in the pool of Dardanelle Reservoir. for a computed maximum probable -flood of 1,500,000 cfs (cubic feet per second) have been given i by the Corps of . Engineers as 353 feet asl at Dardanelle Dam and 3G9.5 l feet ms1 'at the upstream end of the reservoir. The applicant's estimate l -of 358 feet ms1 for the stage of such a. flood at the site appears reason-abic. The failure of Ozark Dam .about 46 miles upstream from the site-during such a flood could cause an additional rise in stage. The head differential across Ozark Dam during a maximum probable flood as computed by the Corps of Engineers would be 11.5 feet, and on that basis the applicant has estimated an additional 3 feet rise at' the site resulting in a stage of,361 feet. This appears to be reasonabic.

At-a stage of 361 feet the site grade would be overtopped by G feet and the reactor-structures-would be surrounded by water. A certain amount of wave action may then be expected and should be reflected in the level of flood protection chosen for essential equipment.

TheLcooling water requirements of the reactor are given as 1,700 cfs (cubic feet per second). Flow of the Arkansas. River has been measured at a ga;;c at Dardanelle- 6 miles downstream from the site. Average flow durinf, 1937-66 was '34,920 cfs ; minimum flow was 416 cfs, and the lowest mean monthly flow was 592 cfs in October 1956. Low flow occurs generally in late summer and fall.

Geo'lonv 1The analysis of the geolo:;7 of the Russellville Nuclear Generating Plant in' Arkansas. as presented in AEC Docket No. 50-313 and supplements, was

. reviewed and cempared with the available literature. The analysis appears i-

' to be_ carefully, derived and to present an adequate appraisal of those aspects of the geology that would be pertinent to an engineering evaluation

.of the Lsafety of the site.

There are no identifiable active faults or other recent geologic structures

that could be e:ipected to localize' earthquakes in the immediate vicinity

-of the site.

_ Tectonically the site is located near the axis of the Scranton syncline, one of severa1' westward-trending,- '3entle' folds that characterize the 2930 c -

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