ML20210T114

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Trip Rept of 740903-05 Site Visit to Examine Site & Discuss Questions Re Geology.Agenda & Attendance List Encl
ML20210T114
Person / Time
Site: Satsop
Issue date: 09/24/1974
From: Oreilly P
US ATOMIC ENERGY COMMISSION (AEC)
To:
US ATOMIC ENERGY COMMISSION (AEC)
References
CON-WNP-1794 NUDOCS 8605290735
Download: ML20210T114 (6)
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SUMMARY

OF VISIT BY STAFF GEOLOGIST' TO WPPSS NUCLEAR PROJECTS M W

NO. 3 AND NO. 5 SITE AND SUBSEQUENT MEETING WITH WASHINGTON i

PUBLIC POWER SUPPLY SYSTEM (WPPSS) SEPTEMBER 3-5, 1974 u .

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! On September 3-5,'1974, D. Budge, Regulatory staff geologist, .O' l < accompanied by a geologist from the Washington State Department i j of Natural. Resources, Earth Sciences Division (WSDNR), visited  !-

i C the WPPSS Nuclear Projects No. 3.:and No._5 site near Satsop, - -

,; Washington in. order.to.oramine the site and to discuss questions',.m i . ,

j regarding geology. -On September- 3,51974, at the WPPSS office .:

-in Montesano, Washington',. the applicant conducted an orientation T

! .. . session utilizing models of the proposed site and facilities.- .

Following the orisntation session, the applicant conducted a ,

l general tour of the site area. During this tour, the trenches .

l along the Workman Creek, the Delezone, and the Weikswood Faults ~

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" 0n September 4, 1974, the staff geologist'and a WPPSS representa-
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l tive participated in an serial tour of the site area by hell . O copter. During the flight, the Weikswood fault, the region J

. . near Minot Peak,f and the site of several landslides were observed . -

. ^ffrom the air. :Upon completion'of the1 flight, the staff geologist, -

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-f ,the WSDNR. geologist,'the applicant, and the. applicant's consultant .

.not at Satsop, Washington to examine core borings. The boring 6;.,..

,' .. B-17 obtained from the proposed location of the WPPSS Nuclear f Project No. 3 containment was examined and discussed. Fossils yV T were observed.in boring A-47. The participants then traveled . , ;m p

by automobile to'the Crescent basalt quarry near the' site.

Possils were observed and collected from the Astoria formation MG while enroute to the quarry. After lunch, the participants met at the Woodward-Lundgren office at Satsop to examine photographs of the trenches located along the Scammon Creek fault and along  ?

.the tuff bed. A model of 'the tuff bed constructed with pegs -'

was also examined. The site visit. concluded with examination $.

of the trenches along the Gibson Creek fault and the continuous

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p 0n 5eptember 5,~1974s1thelstaff geologist..the WSDNR geologists -

,J y the applicant W 6;, 01ympic Inn in Aberdeen, andEthe Washin applicant's' consultants met at.the:,; t q~ . .w on;to discuss the following s ,&

i w/ questions that were formulated ring the site visit.~ An agenda fi l , "'cand,a list of at.tendees'are attached. '" " -

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C - Status of Site Stratigraphy'O y-( g g~,,. y g' .f. ,

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.>v- m 4M 1In view of- the, crude; site stratigraphy, the staff recommended l ,

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that the applicant employ a consultant to examine the core '

borings in order to obtain a more securate indication of the .

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local geologic structures and correlations. The landslidds.jg~ .I observed in the area and their relationship to re'gional. s.

. geologic formations were also discussed.

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In response to. 's staff ' inquiry about future plans fo1E' oil and' ' I , "_

gas exploration in the region, the applicant stated that WPPSS will have title for land and all mineral rights on about 1000 acres in the site area. The applicant indicated that a number of exploratory wells have already been drilled in the site '

_ region without any major petroleum discovery. Because of this, '

the applicant does not anticipate the development of a subsidence

, problem at the site. ,.. t - <

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.. 7. .M Tuff Bed Slickensides . -

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_. on m' s The tuff bedLslickensides seen at trench TBC-1, which do not a ' exhibit offset,Ewero discuss ~ed. 'The applicanrinformed"the~1 "D ~

etaff that these features were not observed in the core borings daad therefore may be associated with weathering of the trenches). s

i. :The applicant indicated that a petrologist will be employed to n

' ' determine whether the slickensides are of nontectonic . origin. -

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~g Significance of Terraces Located North of Site .'

The importance of the terraces located $torth of the site in establishing the~ age of the faulting observed in the region was discussed. The staff stated that additional work on ,

dating these terraces was necessary. Several methods of dating such as more detailed mapping and the use of amino acid and pollen techniques wer:e discussed. ~.= . . . . -

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'Saprolite Dating of Gibson Creek Fault -

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. The' applicant stated that an' attempt will be made to obtain ._ -,-

. . data on erosion and weathering rates for the sitei area. These M6 data would -then:be..used to determine a rate for~ saprolite C.

>e Edevelopment and{thus a date for the last faulting  ;

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Enclosures:

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i 1. Agenda for_ September,5, 1974 ,

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m. Meeting

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, Washington Public Power Supply System '

l . . . Joseph B. Knotts..Jr. , ,

. ~ Richard Q. Quigley' .

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, ENCLOSURE No. 1 .

AGENDA FOR SEPTEMBER 5, 1974 MEETING WITH WPPSS

1. Status of Site Stratigraphy
a. Relationship of landslides to geologic formations in site area t

i 2. Potential for Future Oil and Gas Exploration in Region Near Site

3. Tuff Bed Slickensides Observed in Trench TBC-1 1 .
a. No observable offset
b. Significance of origin
4. Significance of Terraces Located North of Site
a. Need for additional work on dating

_ 5. Saprolite Dating of Gibson Creek Fault i '

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ENCLOSURE NO. 2 .

ATTENDANCE LIST SEPTEMBER 3-5, 1974 SITE VISIT AND MEETING WITH WASHINGTON PUBLIC POWER SUPPLY SYSTEM SEPTEMBER 3, 1974 SITE VISIT Washington Public Power EBASCO Supply System

.' A. Wern G. Sorensen D. Tillson D. Whitford W. McClain Washington State Department of Natural Resources, Earth Sciences Division Regulatory Staff W. Rau

. D. Budge ~

SEPTEMBER 4, 1974 SITE VISIT AND SEPTEMBER 5, 1974 MEETING AT ABERDEEN, NASHINGTON Washington Public Power EBASCO Supply System A. Wern G. Sorensen D. Tillson D. Whitford-W.'McClain Washington State Department of Natural Resources, Earth Sciences Division Woodward-Lundgren W. Rau A. Patwardhan

' M. Perkins Regulatory Staff D. Budge L

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3 Distribution:

Docket Fil F. Schroeder .

AEC PDR H. Denton Local PDR R. Maccary L Reading . V. Stello R. C. DeYoung R. Tedesco R. Denise V. Benaroya

. K. Goller C. Long D. Muller J. Kastner

. D. Skovholt. G. Lainas

- V. Moore D. Ross W. Butler T. Ippolito D. Vassallo S. Pawlicki

0. Parr J. Knight K. Kniel L. Shao A. Schwencer B. Grimes J. Stolz W. Gammill R. A. Clark R. Ballard R. Ireland P. Fine R. Purple T. Novak D. Ziemann M. Spangler P. Collins EP Project Manager - J. Norris l R. Vollmer 0GC W. Houston R0 (3)

G. Knighton V. Wilson G. Dicker R. F. Fraley, ACRS (16)

8. J. Youngblood LNR l-3 Reading W. H. Regan, Jr. LWP. 1-3 File S. Varga G. Lear R. W. Klecker P. O'Reilly F. Kantor D. Budge E. Hawkins C. Liang T. Johnson P. Stoddart C. Stepp J. Costello D. Bernreuter F. Cherney T. Murphy P. Chen R. Kornasiewicz E. Brooks R. Satterfield C. Sullivan F. Ashe M. Bolotsky I. Sihweil L
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