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'54+ ' " ~q,y.. Pr : jy j[ t L-unosmom foe aumen samans N 301EE MIFREY ameGusaugEE EAastY GOIOG88BDIIER TAPE GleeBSS meen ggtman SWJEWt 55d5 CLIFF 3M S 70IL W1 M 9545 PE558 CDNFREENCE At 2005G& 3EAD ,'
e Attached for year indesteetian are espies of esortes whtet W in Calideenia mouspapers fellmutag Pastite 6as and sneserte asepaw's russe sentaremme as meesse maad es w ay, ceteber 7.-
Dummes Clark Direeter l n i.1 ., ,1 i.e es = l Attacheemt est A. A beh, General klaseear ,
R. L. L:..ies. Director of Regulaties ~
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R. I. Donovan, OCL g ~
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1 Fouchaid//Pk t 10/10/1963
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8709250160 851217 .
FIRESTOB5-665 PDR ..;
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t L y Scientists Studying. NPlant Site k
, 3 F. C h ru W. c.f c / e /i / t, d
- . d c===e===y . From I' age 1 ..scismic hazards investigator, who said the fault-clearly
- issued their optimistic replies visible on the side of the
' to an Atomic Energy Com- excavation-was evidence of
- F,^ Vn b m, '- 'site i"8 '" "'press "i"' "in**'".thc4cene '"* danser-rn on The rock itself is % million i
/ . conference 59 feet below ses years old, Tccher said, and p " ***"'d* "4"'"
i . G(.E.,F '$ "DlQ '""The" '""" "' ta ns d -
two scientists, that it had had some breaks L- .. ' ing in the base of a 140-foot- in its lifetime. Much of Cal-
. wide hole being excavated ifornia's rock has undergone Bodea.saPit : ror the rou=datioa or the simiiar damasen
,- plant, spoke to photograph- goygigNT I .. ers and reporters who were y The one disturbing thing.
Uv :llichael l/arrl, T lowered into the drilling site Tocher said, was that therc CNo,Jctecopeyo,,a,,q p .in a wir,e cage. was some evidence of move-
.e. ,
Che site, large.cnough to ment in the much newer soil Bodega Bay *
, hold a bull ring, will be du above the bedrock. Thesc
$ Two scientists'rctained ut another 14 feet b W breaks, indicating shifts of by the Pacific. Gas and . '.next two wecks, Tocher saidj, two to eight inches, occurred 7 ,
STUDY in seil that may have been E!cetric Company, report- .
"Then we will w a n t to formed as little as 42,000 ed yesterday that they '.%make a thorough study be- years ago.
doubted if.the discovery .' . fore reaching our final con- > Tocher said the direction of a break in the bedrock .' i clusion," Tocher declared. of the shifts did not make'~
should rule'out the utill- .y For the moment, he sa.d, i him believe they were caused he disagreed with the con- by earthquakes along the San ty,s p r o p o s e d nuclear ; .. clusion 'of. Dr. J. P. Eaton, Andreas Iault, a quarter-mile
- power plant here . ,
'-Qhe Interior Department's to the east. He said he will 1 "We have found some- know for sure whethu he is right in his belief after Ihing we hoped we the excavation is completed.
, wouldn't." acknowledged, qMarliave, former chief en-
- Dr. Don Toche'r[, st e,smoh>- . gineering geologist for the -
3 , gist at. the Um, vers,ty i of State Department of Water
[ California's Berke 1ey Resources, expressed c v c n campus, greater assurance.
I' 4 "Many structures are being j i "But.it's unlikely'that the built and will be built along a break (in the ground) was the San Andreas fault," Mar-j caused by an carthquake."- llave said. "These matters of l 4 Tocher and Elmer C. Marll- slippage are easily corrected."
j ave, ' Sacramento geo19 gist, COST The discovery of the deep
., Sec Page n, Co!. 3 break in the granite came
~ '
after PG&E had spent an es-l , ff /; timated $2.5 million at the Bodega site.-
.. ** .' .;. . The hillside where the E 000 kilowatt plant would be i built has been cut away into three big terraces, with fresh '
beddings of ice plant cover-f 1
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l . ' '. SEISMOLOGIST DON .TOCHER <
' ;He's not convinced a quake caused the break i
. \' . .
f
- 3, The hun hole, blocked into plant and top soil removed .
' from Santa Rosa and Peta.
s..-
, em . 2pe with sides of lattice. from the new terraces so he luma drove over in their-; -
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.FM work steel, was begun only could study scismic condi. "
six weeks ago. own cars.. ,
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REMOVAL
.tions there.
In order to stage the press PG&E will be permitted to Tlie decision on whether I e
.i' ,'./
2
/.j Tocher said he had nr. conference, PG&E chartered go ahead with its $61 million -[
T .. i' dered the removal of nme two' helicopters to fly 20 re. plant will be made by the *,
,1 f ', 'i concrete from the side of the porters and photographers Atomic Energy Commission ,
/ hole so he could observe the from the Ferry Building to after it holds public hearings -
.q{
IU i break better. He added. he a landing area near Bodega in Santa Rosa later this ;
.g .may order some of the ice Head. News representatives , year.
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t i ELMER MARLIAVE Sacramento coologist
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Ing the terrain.
The road to the observa. .
tion 'arca of what PG&E calls " Bodega Bay ' Atomic Park" was covered with gravel late last month, and' cyclono fencing was *
.into place ten days ago; ~put '
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.I FHE* THE SAN' FRANCISCO CHRONICLE- Tuesdiy,,Octoby 8,1963 PAGE 'i3 j..
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. . SITE bF' THE- PG&E'S PROPOSED NUCLEAR POWER' Pl. ANT
.,. The nuclear reactor would fit into the pit at cente'r o
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Quake Slin F / f .md .1 slide in sedimentary mate-g 3
% . d @ i W C .L J rial. .
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,y,'. I k: D>3 t "In either event, the plant can be constructed to ac-EE'4 0gm' y Q'l ES%md; count for these two possibill-d ir.m e j
'. 'By JAMES SCliUltZ ties, aM 'it also is designed '
lt 'is'" extremely unlikely" dMyg4 tf {.% - A ^ w4 g/ one and a half times the that e a r t h q u a k e's have caused a minor slippage in j% ',$d@@Mg37p/q f MN standards set for carthquake.
proof structures in the area W.f %y i
the earth at the Bodega Head phrg;.'.y .> While he stressed tha *
, , site of Pacifle Gas and Elec. Hct 7dAU:A their investigation is not j_
- tric Company's p r o p o s e d dT'id.F over yet, Bodega Head "looks '
l nuclear power plant. >> like a good site for a nuclear j In any event, the slippage J 'qP.
'f ' n* . L '. a p plant." ,
4 occurred more than 40.000 "' O l , .5 i PG&E has approval from i
! years ago. .7% bm - the Sonoma County Board of Ghis was the conclusion Dr. Don Tocher, associate .
of%%[ Supervisors' r j %-;M@% and the State Public Utilities Commission i
. research seismologist at the h#!;.7*9 9l 9 [ to build the S61 million 4 .; . ' Y' C.' plant, and the company has
- .; made University ofinspec an on the-scene California,
. gg ;' -whoTQp(4, applied to the AtomicEnergy t 3A Commission for a construe-
' tionwhich pit yesterday of dug is being the huge for bf_Sh Qp d.' ~7 iG 3 -
the nuclear reactorf [J/f,7@ tion permit.; *
- He was backed by Elmer gg]$pg*[PM g'Q Jt
- C. Marliave, consulting icMgeol k' AU yd h,jd${ih ogist, who was chief engi- .
- necting geologist io r t h e DR DON TOCHER
. State Department of Water Two hypotheses 4 Resources'from 1935 to 1956. .
- 4. The two men have been covered. In the layers of
. rctained by PG&E as'inde. sediment. He continued:
endent consultants to evalu- g "The sedimentary layers
- p< ate the foundation for thehave been laid down in the.
. atomic power ' plant. They last 250.000 years. We tested
+ hope to complete their study wood found in a layer above
'4n the next two or thre e the slippage.and found it .
wecks. was more thar 40,000. years
~
IN SEDIMENT cid. It is impssible for us 1
. Bay area newsmen were to fix the tce when the
' flown up to Bodega Head in .'.Uppage y , As the digging occurred.2% contin-helicopters to view the exca. g vation and the slippage first ued . into the bedrock -
which is granite, or techni-hand and to talk to the two cally, quartz diorito--we dis-experts, '
covered , numerous minor i This was the utility's an* faults, or fractures.
swer to a report last Friday 1 uIt is extremely unl&dy from Dr. J. P. Eaton, scism',c that these were . caused by hazards investigator for the earthquakes, or that the shp-U. S. Department of the In- page and the faults are re-terig~
Doctor Eaton, who visited la}cd to one another. ,te old,
- 'The bedrock is qm Bodega Head last May, cona probably 93 million years old, cluded that the ' site'"is not and quite hard. The San An-an adequately safe location
- for a nuclear. power plant" dreas fault follows a scam of due to its proximity to the weak rock.
San Andreas fault a mile and A GOOD SITE a half away, l. "There are two possible Dr. Tocher explained that hypotheses to explain the
. as the excavation on the site slippage in the sedimentary began, a slippage ranging rock above. It might have from,2 to 8, inches was dis been caused by a differential .
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The h-Plan? Controversy
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whisk broom in an attem'pt to fol-By Geow;e Dushock mm w, r --~!
An old-more than 40,000 years old-fracture runs across mi the bed Ny lc ".h.Q .
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H QU%A K~ E, h he q be-low it across rock in the 7, '3% i A 1 7:Ti sediments Head,65-foot-deep but the same W. reactor pit EE$$j:,p,f' - as extensively as the 7 ' ;]jbedrock. lieves, would have fractu on Bodega i fracture extended only half way W :% , 7,,y:i.5.fd
- q !E~ Othcr forces - such as
" a variable settling or compacting of across the pit site in the overlying i ' V.' .C.
sedimentary gravcis and sands. L -
For this, reason the University F. ~" '
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.the rocks on act ture zone-might each moreside of the frac-selec-of Calif ornia seismologist. Don k , w .$ tively.
"But our investigation is con-Tocher, thinks it is " extremely un- ti; > - njh c.d: . . W t.
likely" that the ira c tu r e was %l % l.N "-"'"',:' w ' . * *'%j tinuing," he said. An attempt has caused br earthquake.
The Pacific Gas & Electric Co., P, . < >
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,. been made to date the fracture MJ from some pieces of wood found alarmed at the recently revealed ". ~
fj in the sedimentary fracture zone.
4 .These were found, by the radio-opinion of a U. S. seismologist-that Bodega Head is unsafe for a W' / -
m active carbon dating method, to be reactor site, yesterday flew by ' ,n 1, more than 40,000 years old,
- ' If this is dependable, the fault helicor.er a group of Bay Area newspaper, radio, and,TV men to 1
f {p -p,J-q.. would be classed as inactive and -
unlikely to cause trouble for the -
the reactor site for an on-the-spot Iceture on geology by Tocher.
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j nucicar reactor the PG&E pro-Y N poses to build there to generate -
IT WAS RATHEItcomplicated.
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The fracture on the southwest side Against Tocher's opinion that of the circular reactor pit was first bd. >
a 'd ji' it is
- extremely unlikely" that the ld spotted in the overlying sediments %> W;nk? {c;.. -
.c f g, fault is
- h. an earthquake fault, must when excavation began. But these sediments have long since been
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be set the opinion of Dr. J. P.
.M ;j? # ;p, s Eaton, of the U. S. Ceological Sur-carted away by' dump trucks to make the road along the west blQ . . .Q _
n vey, that earthquake fractures on B dega He'ad are to be expected shore of Bodega Bay. {$.
7 QY [f%P M. % whenever the nearby San Andreas The sedimentary . f r a e t u r e therefore exists only on Tocher's MM"i d
fC%b $^[ ] fault slips on a grand scale. In DOG, for example,it slipped nearly geologic map of the pit area. In 4'N > ' % 20 feet in a fraction of a second at recent wecks a fracture has been k ,*; % z.- @.e. e Olema, a little' way south of Bo-uncovered in thediorite same dega Head.
location in the quartz bed-general Vlh:'N 'RicM. N ,i g -
rock under the sediments; it ap. p'.h y . , N . "FEW PLACES on earth are -
exposed to more certain carth-pears like a long diagonal crack in Q J. o ' quake risk than those along the the pit wa!!, outlined with stakes $%
,";v-da.,g;, . ;,. San Andreas fault," said Dr. Eaton.
fixed at its boundaries by Tocher and Elmcr C. Marliave, a consult- My@M@E n'i "A
Marliave was asked about such ing geclogist from Sacramento. 6n r.,i - s N contradictory assessments of the It probably is the same fracture ,y.h. 'i hazard.
which existed in the overlying sed , Wlp ^
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"There are always differences iments, Tocher believes. But he yC -+ of opinion." he 'said ." Engineers and Marliave lost it in those sedi . v!y N and geologists had different opin-T ions about the Golden Gate Bridge
.ments last spring and summer ,A n before it was built. We are just about halfway across the reactor Cage cany.ing inspection crew pit site "even though we got down trying to get at the facts as best on our hands and knees with^a' "f.92 c5 h, , C "r*6 .,,,,, - ' we can." ' 4
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