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- 1 '( o ATTACHMENT #1 UNITEU ST.ATES DEPARTMENT OF THE INTERIOR OFFICE OF THE SECRETARY Washington, D.C. 20240 | ' . Dear Dr. Seaborg: September 25, 1963 In response to the letter of May 23, signed by Dr. Robert E. Wilson as Acting Chairman of the Atomic Energy Commission, I , am now transmitting the enclosed report, GEOLOGIC AND SEISMIC i INVESTIGATIONS OF A PROPOSED NUCLEAR POWER PLANT SITE ON BODEGA HEAD, SONOMA COUNTY, CALIFORNIA. j l The geologic phase of that investigation disclosed no positive J evidence of active faults passing through the parts of the ' site excavated as of June 6,1963 | But our seismic hazards investigator, Dr. J. P. Eaton, con- cludes: | | | "I believe that absen'ce of demonstrably recent ! l faulting in those parts of the site and Bodega | Head where field relationships are reasonably j ! clear is not an adequate criterion for estab- 1 | lishing the safety of the site. Though neces- I sary, it is not sufficient. In the maze of | old faults and fractures cutting the quartz diorite, minor recent offsets could be easily ', ' overlooked. On portions of the Head where the I ! quartz diorite-pleistocene contact is badly weathered or otherwise obscured small recent offsets probably could not be traced from bed- 1 rock into the sedim'entary cover. The site j excavation itself samples only a fraction of ' the region in which faulting might prove disas- trous to the plant. "The common occurrence during large earthquakes of offsets od a number of minor faults in sym- pathy with 'a large displacement on the causative fault cannot be disregarded. Displacements in bedrock west of the San Andreas fault on the Point'Reyes Peninsula at the time of the 1906 earthquake indicate that faulting does occur outside the San Andreas fault zone in sympathy with large displacements within the zone. The occurrence of such offsets on Bodega Head during future earthquakes is a definite possibility. "Because reliability limits on any estimate of seismic hazard to the proposed plant are so (more) 0% m le 1J .h a s 8709220048 851217 PDR FOIA FIRESTOB5-665 PDR e k == _- =- - - - - - - - - - -- ?

In response to the letter of May 23, signed by Dr. Robert

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Page 1: In response to the letter of May 23, signed by Dr. Robert

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ATTACHMENT #1

UNITEU ST.ATESDEPARTMENT OF THE INTERIOR

OFFICE OF THE SECRETARYWashington, D.C. 20240

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Dear Dr. Seaborg: September 25, 1963

In response to the letter of May 23, signed by Dr. Robert E.Wilson as Acting Chairman of the Atomic Energy Commission, I ,

am now transmitting the enclosed report, GEOLOGIC AND SEISMIC i

INVESTIGATIONS OF A PROPOSED NUCLEAR POWER PLANT SITE ONBODEGA HEAD, SONOMA COUNTY, CALIFORNIA. j

l

The geologic phase of that investigation disclosed no positive Jevidence of active faults passing through the parts of the '

site excavated as of June 6,1963|

But our seismic hazards investigator, Dr. J. P. Eaton, con-cludes:

| || "I believe that absen'ce of demonstrably recent !

l faulting in those parts of the site and Bodega| Head where field relationships are reasonably j! clear is not an adequate criterion for estab- 1

| lishing the safety of the site. Though neces-I sary, it is not sufficient. In the maze of| old faults and fractures cutting the quartz

diorite, minor recent offsets could be easily',

' overlooked. On portions of the Head where the I!quartz diorite-pleistocene contact is badly

weathered or otherwise obscured small recentoffsets probably could not be traced from bed- 1rock into the sedim'entary cover. The site jexcavation itself samples only a fraction of

'

the region in which faulting might prove disas-trous to the plant.

"The common occurrence during large earthquakesof offsets od a number of minor faults in sym-pathy with 'a large displacement on the causativefault cannot be disregarded. Displacements inbedrock west of the San Andreas fault on thePoint'Reyes Peninsula at the time of the 1906earthquake indicate that faulting does occuroutside the San Andreas fault zone in sympathywith large displacements within the zone. Theoccurrence of such offsets on Bodega Head duringfuture earthquakes is a definite possibility.

"Because reliability limits on any estimate ofseismic hazard to the proposed plant are so

(more)0% m le 1J .ha s

8709220048 851217PDR FOIAFIRESTOB5-665 PDR

e

k== _- =- - - - - - - - - - -- ?

Page 2: In response to the letter of May 23, signed by Dr. Robert

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broad, the statement of tolerable risk must bevery general. The magnitude of possible humandamage that would result from the destructionof the plant by an earthquake suggests that itshould be built only if there is no reasonabledoubt that it would survive any earthquake like-ly to occur on the nearby San Andreas fault. Itappears to me that the site does not meet thistest and that it is not an adequately safe loca-tion for a nuclear power plant.

"Few places on the earth are exposed to more cer-tain earthquake risk than are those along theSan Andreas Fault in northern and central Cali-fornia. The case arguing the safety of theBodega Head site rests largely on the confidencethat ' granite' is a good foundation material andthat it minimizes ground shaking due to earth-quakes and on the judgment, supported but notproved by geologic investigations of Bodega Head,that no faulting has occurred there during thepast several thousand years. The case againstthe site stresses seismology's lack of detailedinformation on events and conditions in the epi-central tract of a major earthquake. Because wecannot prove that the worst situation will not, "s,

prevail at the site, we must recognize that itmight.

" Acceptance of Bodega Head as a safe reactor sitewill establish a precedent that will make it ex-ceedingly difficult to reject any proposed future j

site on the grounds of extreme earthquake risk."

These findings do nothing to allay, but only reinforce, thegrave concern expressed in my May 20. letter to you -- regard-ing the seismic dangers of this proposed Bodega Head locationfor afmajor nuclear power plant.

Sincerely yours,

/s/ John A. Carver, Jr.

Dr. Glenn T. SeaborgChairman, United States

Atomic Energy Commission1717 H Street, N.W.Washington 25, D.C.

Enclosure

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Page 3: In response to the letter of May 23, signed by Dr. Robert

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UNITED STATES1

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ATOMIC ENERGY COMMISSION'

:-

Washington, D.C. 20545]

Oct I' '

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I Dear Mr. Carver:-< '

. .

Thi s' is to acknowledge, with thanks, your 2 l!>

, . |25, 1963, transmitting the report entitled, ,

,

Seismic Investigations of a Proposed Nucler'

, - on Bodega Head, Sonema County, California.' |

j While the report includes geological inforr''

through June 6, 1963, the excavation at thiued.- Messrs. Schlocker and Bonilla, of th<

| ! vey, have remained at the site and still a:. ,

{ geology in the excavation in detail, a-

',

i Subsequent to the' period covered by your r,I a fault was observed in the sediments abov J| ,

excavation now has reached more than 40 fe. !|' '

and, within the past few days, it has been. i.1 faultextendsintothebedrockattheloca'{A

'

M posed plant. l

It is not yet known whether, in a geologic..] fault would be considered to be active or

continuing in an attempt to determine appr.

.' ago movement last occurred along the fault|

+

7 this point will be important in our determ Isignificance of the fault, and we therefor |furnish us a further report on the geologi

,

:I fault.

Sinc i'

/s/ )~

Chai i|'

Honorable John A. Carver, Jr.'

i Acting Secretary of the Interior !

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Page 8: In response to the letter of May 23, signed by Dr. Robert

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+~ , , . . * . **',',a p!4nt by at ear *.hquaa' e eu.!gt tv that it smou:d that the worst situstien will fW !.tv;; et l'+e-*, '-'- *C 4e M1 Wy if Dere le no ymenan;e CouDt sne, we must rep!M tut it P4*

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m.,',a e. naay gan A.,:rene fault." enthat l wou'd survive any earl **t ska likely toPaelf!c Gas ins ~ ea44 thet . nuclesr.,..

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powed prant wouid seet more te witd than* , .* *, .ld, .'. "M. P',re19yuneen fracture an th9 ear;h. "It ap- a comparsb:e oatheramg p;am imt that the

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gPfaN to me/' Pe added. *th9 the s;te does

atomte p|ar:t tou|d produce sitenpf electricityicot freet th t tes' and that u is not an ade- than an ell burtting p ant. Armtmm- t]te fiveleat

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+ . . ' . . ~ **, . ' ' ' . a (" * ;* * g.['p.anPht uatify Ja;e fecation for R n:Iclear powerplant started operWeg in ISC8 at W1 of capa.. ' ' g** | . .~

"|*!! QUr5| Mr. Pa:os s Ftpri sus b= "'t en excava. city Wuld be 8J rtal s paa kulwat hour. Less. * s Mi**.; A elty, the eve *ege (ellverent cost of lie eteetti..[. M '** 7*r'':ty 3t'.: !!ont stMe by Peelf e G4a *%g78 Jime 6. than the 8.6 naille for an o|14ffred plant, the

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Def4*e :Se fra*Mrs en 1*te .et9' ' a t discovered. eempany has esatu;ated. A m|Il te a tenth of a==*'"

|Ne F79' e;cM the pp e ect. al: hough eeni..w~r& t sv wee ,

ihe eu.M l'taa n "e*1. q ng The nucleartetrerod plast la expseted to |'* "t: PrP Des -a 9e f at P*att1MP:tt Md 5can four:d ur . N esposed toI tr.1 time. test about 861 mill!nn. At mid 1911 toaistruetton

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,. . 5 -~ e tr?-** *F E #NO j* 13e ' *=e y5ees en t:g cer-

um"a'ted'at m mCo'n.'N*PI P'8"% ***.= = . * - * ' + 3 e-;. e-=.;cas en mer's ese:Mn err'hTrake rash et those along"

?L 'S% Oer 4 ""ed'r|c Co. to !ae atn AMremt f* ult in For * in and central The AEC report la furnLthing fregh ammu.-ge.m. on,.c Iy. C.dWs." M mer "'fp t >* argumg the RUIDn to A I"oup of Ca?tfernwie v.'lio have-

-* Us Gaalen G2:e ,safo.,tel ne Ot.a H ad Mas largety been hattung the Pompears plans to bul!d the

g t , p.*1de*M fial Tra t t goed foun. nualnr power plant. A consorent!onist group.*

* - tae ;ttt it* <ays of datter ::4wral and L'. I' . .. Maes ground the Northern California Associa:lon to Pro.-i '

"vt f aul et f*ntiuse, nn, ena.rw; he to earahnuaket. 1 on the padg. serve Bode;s P* cad and 1: arbor, has insim*6r

' A .# ~% .t :om. man mye es-2 *21 Mt prow ' My geologic in,

the site is unsafe 92eaune 11 le mesr the Sanf..A;'d h "ie.Nen to mMm of hepa Him! ..! no fau!Urg Andreas fault sone, an settve enettvpsake tien.

A, e'

, - i M a rt s **- . ;. '- eur. has .eu. ed Inn dortp:t - atet several After pubHe hearings in Sfsreh IP63. the|c --.e,,n.e e et omaers now |ang tPouA s; ya.rs. .

.?+ ~* *er*nnot prove California Punlie UtlHttee Commfuion, a sta:e, ,. -

e- ' " *. etsnds )- . _ .=

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|~ *NSh -Tohrs MI@'FF GCWF, granted hem CV a cer* '* . .- -; ; e ..g 5 m a g3

tificate to build the power p:Aet subject toe r.~ v ri*av:r; st29,n- m.1 e , m: n No ; Wa*1. the company's securlar a permit frem the

AEC Last July the Rublic V;!iltre Commis.. '$. ' [. t , ' '

elon again #pheld the company in turning down. ,p. . 7. , y 99: i3 # An V Be WWUenM gmp mat. . u g.. .r r.cnt new hearings on the quentlen ne hey,'

. - i tah 9 AEC The stoup found howe

~ -r ^ esm: suppen. however,from William 31. Emnett, the president of theW r Me""*Publie UH:llite Cemmis+1on. Dt a d. pent:ng

,

opinton. he argued qual the plant pae ?.n* un.* it ap.

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W4 C. L ' 9'N'WL enem'"eermg'sa!e and that be commlas|on ego,tta recee. '

, " * * 'W" s' der its decishn.;

. , a The AEC has artnounced it w41 open hear.- - ; t ,e t.T., ef the fan:t. np on Face Cas' appneaWn in sanos Am.

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e . M e a-tovt tan Catif. But a cate hase t been set. P.iettle 0 9+- rm h a re- said the AEC must We .10 cars' nottee be.

* tore heid!ng heartrga na the cppuenPoi.;IJ-[;{g .,a"

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C .,.g The plant et Cede:S Head ufd he tis'.

, thiret atomie power piret Pacif e ea, he, .'re- non .me In Caliternas. The !:r,t tro .hdn't om -'|a.;oS et Del [,,..MMrOWr87-s

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Page 9: In response to the letter of May 23, signed by Dr. Robert

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\ 7MEMO ROUTE tilP_ _

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Pbrm A FXh23 (R*v. May 14,1947)_

58* ** aoout m . ror concurrence. ror action.-

Nots and return. For signature. For information.TO (Name and unit) INITIAL,5 RIM # ttKS

|Joe Feuchard -

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Enrold Price l.

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TO,4Name and unl0 puYts.s REMARKS

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TO (Name end unit) (NIDALS RLMARK$ . '' *J)-^ ' 'R. W. Smith LA

' "'" ^'/Comp 1 V., SAN,

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%-FROM (Name and unit) REMARKS

Dale J. Cook moda== ler c. mase--Asst. Info. Officer

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PHONE NIA DATE

10/4/63USE OTHER SIDE FOR ADDITIONAL REMARK $ U. 5. GovtaNMENT PRINTING OFTICI e IM7-O 422007

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Page 10: In response to the letter of May 23, signed by Dr. Robert

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wi 1M F'BLIC SPEM i

' She's ht Paul Ghis, 1- -

|But It's Flattering1

'

EDITOR: Well, rny word! for %s.w.w mawwww ;wording!), When I wrote the line 3IAtters to ''Iet the Pub!!c gf

*

in this column last June: ,*It is .

S3 peak" are welcome. They (my observation and opinion that

the tactics of the opponents (of j should be limited to 300 words~

'

AEC), whether they know it or |j or less. Writers MUST identify|not, are a bit on the commic j enn ves with name and ad.Ia

side," I did not know we'd go1 dress which WW k withheld [@into a lesson on either reading or Upon request, except I? the !ct.

parts of speech; but since Mary ter attaeks another 3,erson. bJanette Darling, Bodega Bay, is j! Tht editor reserres the right f

1reading into it someting that not to publish letters be re.isn't there, here goes: g gards as is bad taste, libelons, h[

Basically, the sentence reads: I ,'' #" "*"*I

**the tactics (noun) are (verbi abit on the commle side." If I' *"N e"=""had said "the opponents (nount

are (verb) a bit on the commie even now. AEC is not able to j

side.'''I would have been name. hand down a competent decision.!

1

calling. Rather a dangerous game, this'I am a Woman, but just be- tmdermining, I'd say. ',

'cause I wear a man's shirt. I And, now-Icst any of ,you <am not a man. The opponents other regular readers also as.

,

are loyal American citizer,* and sume I am only a pen name ofyet !! they employ the tactics of Paul Golis: Mr Colis is a tall,the Communists, that does not slender genticman. with darkmake them Communists. Where hair (?) and nice brown eyes in.

,# we 4ielve into the gray area here his late 40's or early 50's. I amis: the tactics of the (%mm=% a short (5' 2") blonde (graying)

!

are deplored and frowned upon - haired woman in my early 40's.' {in this country, simply because 'But, thank you, Mary Janette '

they are not necessary (in fact, Darling, for the assumption of .are detrimental) to our way of the pen narr.e. Altho it has itslife. The mere suggestion that ridiculously humoristic aspects,-.

any of us could possibly be guilty I am indeed flattered-Mr. Golisof using this type of tactic in re-, is an extremely intelligent per.lation to a subject so local is son.unbearable. Therefore, the read. MARGARET G. SOVEY-er, an opponent of the atomic (Mrs. Wulfam I. Sovey)power plant, jumped to the de- Rohnert Park

^

fensive conclusion she was beingcaUed a Communist. his is a *

common failing of those who do l.

not read well, or those who donot understand theplayof words,.or particularly, of those who feelsomewhat on the defensive inwhat they are reading to beginwith.

Yes, agreed, we certalrJy Elohave a right to question the AEC.But, we do not have the right todown-grade it or undermine It.Our cherished :ights in this coun .try are so often misused, and byso thany well-meaning citizens,.too. Example: So the opponentsbecome successfulin discreditingthe AEC in theJ eyes of thepublic. 'Ihm AEC hokis' itshearings and decides in favot .of the opponents. Who, by then,will be able to discern if AEC,is correct in its judgment? Sure.

|ly, the opponents least of' a!!.ney've convinced themselves, ..

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Page 11: In response to the letter of May 23, signed by Dr. Robert

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UNITED STATESATOMIC ENERGY COMMISSIONWashington,_D.C. 20545

No. . F-197 FOR IMMEDIATE RELEASETel. HAzelwood 7-7831 (Friday, October 4, 1963)

Ext. 3446

AEC RECEIVES INTERIOR DEPARTMENT REPORTON SITE PROPOSED FOR BODEGA HEAD REACTOR,

The Atomic Energy Commission has received a report fromthe Department of the Interior concerning the geological andseismological aspects of a site proposed by Pacific Gas andElectrical Company for a nuclear power plant at Bodega Head,approximately 50 miles northwest of San Francisco. A reportfrom the Department of the Interior had been requested byAEC, in addition to other information from a variety ofsources bearing upon the request of Pacific Gas and ElectricCompany for a construction permit.

As noted in the attached letter from Acting InteriorSecretarSeaborg,y John A. Carver, Jr. , to AEC Chairman Glenn T.the geological phase of the Interior Department re-' ,

'

port reflects the status of excavation work being conductedby PG&E at the Bodega Head site as of June 6,1963

Excavation at the site has continued since that time,and, as requested by the AEC, it has been observed by repre-sentatives of the U. S. Geological Survey, as well as by AECpersonnel.

Subsequent to thement report on geology, period covered by the Interior Depart-a fault was observed in the sediments

>

above bedrock. The excavation now has reached more than 40feet below sea level and, within the past few days, it hasbeen found that the faul't extends into the bedrock at the-location of the proposed plant. It is not yet known whether,in a geoloactive or.gical sense, the' fault would be considered to beinactive. Work is continuing in an attempt todetermine approximately how long ago movement last occurred !

along the fault. '. Geologists from the U. S. Geological Surveyare at the site and are watching the excavation ~ork.w

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Page 12: In response to the letter of May 23, signed by Dr. Robert

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A further geological report is'being requested from theDepartment.of the Interior with respect to.this fault.

The Interior Department report which has been received,the further geological report being requested regarding therecently observed fault, and all other information pertain-

'

ing to Pacific Gas and Electric Company's application for aconstruction permit will be studied by the AEC RegulatoryStaff, its expert consultants in seismology _and structuralengineering, and by the Commission's Advisory Committee onReactor Safeguards. The Coast and-Geodetic Survey of theU. S. Department of Commerce also is assisting the AEC Regu-latory Staff in its evaluation of the seismology.

Attached are copies of the'1etter from the Acting Secre-tary of the Interior to the Chairman of the Atomic EnergyCommission and of Dr. Seaborg's reply requesting a furtherreport from the Department of the Interior. Copies of thefull report of the Department of the Interior are available,

I for inspection at the Commission's Public LDocument Room,1717 H Street, N.W., Washington, and at the Commission'sSan Francisco Operations Office, 2111 Bancroft.Way, Berkeley,California.

mx- 30 -

(NOTE TO EDITORS AND CORRESPONDENTS': This announcement isbeing issued simultaneously int the Commission's San FranciscoOperations Office in Berkeley, California.)

10/4/63

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