ML20151Z861

Summary of 880405 Meeting W/Util in Rockville,Md Re Geoscience Issues for Plant.Viewgraphs & Attendance List Encl

ML20151Z861
Person / Time
Site:	Satsop
Issue date:	04/27/1988
From:	Vissing G Office of Nuclear Reactor Regulation
To:	Office of Nuclear Reactor Regulation
References
NUDOCS 8805050389
Download: ML20151Z861 (95)

Text

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~g UNITED STATES

[ [ g NUCLEAR REGULATORY COMMISSION g E WASHINGTON, D. C. 20555

%,,,,,/ April 27, 1988 Docket No. 50-508 MEMORANDUM FOR: The Record l l

FROM: Guy S. Vissing, Project Manager Standardization and Non-Power Reactor Project Directorate Division of Reactor Projects III, IV, Y and Special Projects

SUMMARY

OF MEETING OF THE STAFF WITH WASHINGTON PUBLIC POWER SUPPLY SYSTEM )

CONCERNING GEOSCIENCE ISSUES FOR WNP-3 i (WPPSS LETTER DATED 11/20/87), APRIL 5, j 1988 Introduction  :

1 A meeting of the staff with representatives of Washington Public Power Supply System (WPPSS or the Supply System) was held at the offices of NRC in Rockville, Maryland, on April 5, 1988. The purpose of the meeting was to i discuss the Supply System's response to the staff's questions Q230.3, Q230.4 l and Q230.5. The Supply System transmitted the responses to the staff's questions by letter dated November 20, 1987. Many of the viewgraphs were of the figures in the November 20, 1987 letter. Enclosure 2 provides the ,

viewgraphs which were presented at the meeting. Enclosure 1 provides the attendance list for this meeting. i Discussion Historical earthquake data appears to support the belief that the subducting Juan de Fuca plate is arched in a northernly direction beneath Pudget Sound and the direction of the maxim dip varies from east-southeast at latitude 47 degrees N to east-northeast at latitude 49 degrees N. This data includes data taken from an extensive network of University of Washington seismograph stations located in the area after 1970. Analysis of the data subsequent to  ;

1970 provided vertical and horizontal error bars of epicenters of earthquakes 4 in the region. Larger magnitude (4.5 and greater at depths of 30km and greater) earthquakes appear to occur at or east of the point of flexure of the dip in the subducting plate. WPPSS postulates that one likely mechanism for the localization of the larger earthquakes in the vicinity of the flexure is the concentration of tensional stresses at the bend of the plate. If this is 1 correct, then the slab or plate flexure area may mark the western boundary of the larger inter-slab earthquakes.

WPPSS in estimating the maximum magnitude of random earthquakes assumes that the maximum is about one-half magnitude unit larger than the observed mag-nitude. Using this nethod, WPPSS estimates the maximum earthquake i to be 5-1/2. Considering both the historical record and the results of 8805050389 080927 PDR ADOCK 05000500 l A PDR

2

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detailed geological investigations in the site region, the maximum magnitude possible for a "random" event in the site vicinity is estimated to be about 5-1/2 to 6 by WPPSS. The staff has not, as yet, reached any conclusion on this issue.

Response spectra for the site were computed from accelerograms recorded during earthquakes of magnitude 5.0

• 0.5 at epicentral distances of about 25km or less. As the plant is founded on rock, only recordings located on rock were used. Statistical analysis of the data set was performed. The SSE design spectrum was found to be well above the computed statistical response spectra for the maximum historical event that has occurred within the site area.

The maximum earthquake en the Olympia Lineament has been estimated by WPPSS to have a magnitude of 7.5 and to be located at a distance of 35km from the site.

Site-specific spectra were estimated by conducting a statistical analysis of the responses spectra earthquakes in the western region scaled to magnitude 7.5 and distance 35km. On the basis of these analyses the SSE spectrum at the site appears to be adequate in relationship to ground motions from the postulated maximum event on the Olympia Lineament.

Conclusions And Staff Comments The information presented at this meeting was, in general, well prepared, appeared to use the latest methodology and was responsive to the questions.

The basis for defining the Coast Range tectonic province as being between 44 and 47.3 degrees north latitude and the east-west extent of this proposed i tectonic province needs to be provided. The use of the maximum historical earthquake plus one-half magnitude unit to estinate the maximum magnitude random earthquake needs to be justified. The basis for assigning a maximum magnitude 7.5 earthquake to the Olynpla Lineament is needed. The ground motion estimates made for the various earthquakes appear to be reasonable.

However, the staff will need to confirm the assumptions and calculations.

WPPSS has made a reasonable argument for the existence of the flexture in the subducting plate. The staff will review this issue and assess its implications.

The possibility of a field trip by the NRC staff members to the site vicinity )

was discussed and the date was left open, d .

I uy S. Vissing, Pr ject Manager Standardization d Non-Power Reactor Project Directorate Division of Reactor Projects III, IV, Y and Special Projects l Office of Nuclear Reactor Regulation {

Enclosures:

As stated

i

April 27, 1988

! 2 detailed geological investigations in the site region, the maximum magnitude i possible for a "random" event in the site vicinity is estimated to be about 5-1/2 to 6 by WPPSS. The staff has not, as yet, reached any conclusion on this issue.

1 Response spectra for the site were computed from accelerograms recorded during '

earthquakes of magnitude 5.0

• 0.5 at epicentral distances of about 25km or less. As the plant is founded on rock, only recordings located on rock were ,

used. Statistical analysis of the data set was performed. The SSE design '

spectrum was found to be well above the computed statistical response spectra for the maximum historical event that has occurred within the site area.

The maximum earthquake on the Olympia Lineanent has been estimated by WPPSS to have a magnitude of 7.5 and to be located at a distance of 35km from the site.

Site-specific spectra were estimated by conducting a statistical analysis of the responses spectra earthquakes in the western region scaled to magnitude 7.5 and distance 35km. On the basis of these analyses the SSE spectrum at the site appears to be adequate in relationship to ground motions from the postulated maximum event on the Olympia Lineament,

, Conclusions And Staff Comme.nts The information presented at this meeting was, in general, well prepared, appeared to use the latest methodology and was responsive to the questions.

The basis for defining the Coast Range tectonic province as being between 44 and 47.3 degrees north latitude and the east-west extent of this proposed tectonic province needs to be provided. The use of the maximum historical

. earthquake 31us one-half magnitude unit to estimate the maximum magnitude randem eart1 quake needs to be justified. The basis for assigning a traximum magnitude 7.5 earthquake to the Olympia Lineament is needed. The ground motion estinates made for the various earthquakes appear to be reasonable.

However, the staff will need to confirm the assumptions and calculations.

WPPSS has made a reasonable argument for the existence of the flexture in the subducting plate. The staff will review this issue and assess its implications.

The possibility of a field trip by the NRC staff members to the site vicinity was discussed and the date was left open.

Originni Signed By:

Guy S. Vissing, Project Manager Standardization and Non-Power Reactor Project Directorate Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation .

Enclosures:

As Stated Distribution:

I 1 Docket File  ;

OGC-Rockville NRC PDRs EJordan PDSNP Reading JPartlow L Rubenstein ACRS (10) t i

GVissing NRC Particants 4 0FC :PD5NP* :PD5 :E5GB*  :  :  :  :

.....:...# .....:..a ..:............:............:............:............:.... ......

NAME :3[ 6g: 1s :LQ n :GBagchi  :  :  :  :

i.....:............:............:............:............:............:............:...........

!DATE :04/18/88 :04/Z1/88 :0a/26/88  :  :  :  :

OFFICIAL RECORD COPY *See previous concurrence

, - _ _x -- . ~., ._.

7-

2 historical record and the results of detailed geological investigations in the site region, the maximum magnitude possible for a "random" event in the site vicinity is estimated to be about 5-1/2 to 6.

Response spectra for the site were computed from accelerograms recorded during earthquakes of magnitude 5.0 0.5 at epicentral distances of about 25km or less. As the plant is founded on rock, only recordings located on rock were used. Statistical analysis of the data set was performed. The SSE design spectrum was found to be well above the computed statistical response spectra for the maximum historical event that has occurred within the site tectonic l province.

lThe maximum earthquake on the Olympia Lineament has been estimated to have a l magnitude of 7.5 and to be located at a distance of 35km from the site.

! Site-specific spectra was estimated by conducting a statistical analysis of

, the responses spectra earthquakes in the western region scaled to magnitude l7.5 and distance 35km. On the basis of these analyses the SSE spectrum at

'the site is judged to be adequate in relationship to ground motions from the

, postulated maximum event on the Olympia Lineament. l lConclusionsAndStaffComments lThe infornation presented at this meeting was, in general, well prepared,  ;

iappeared to use the latest methodology and was responsive to the questions.

lThe basis for defining the Coast Range tectonic province as being between 44 r land 47.3 degrees north latitude and the east-west extent of this proposed

tectonic province needs to be provided. The use of the maximum historical i l earthquake plus one-half magnitude unit to estimate the maximum magnitude l random earthquake needs to be justified. The basis for assigning a maximum

magnitude 7.5 earthquake to the Olympia Lineament is needed. The ground imotion estimates made for the various earthquakes appear to be reasonable.

lHowever, the staff will need to confirm the assumptions and calculations.

lWPPSShasmadeareasonableargumentfortheexistenceoftheflextureinthe isubducting plate. The staff will review this issue and assess its limplications.

lThepossibilityofafieldtripbytheNRCstaffmemberstothesitevicinity i lwas discussed and the date was left open. ,

l Guy S. Vissing, Project Manager l Standardization and Non-Power l Reactor Project Directorate Division of Reactor Projects III, IV, Y and Special Projects

Enclosures:

As Stated Distribution:

Docket File OGC-Rockville l

NRC PDRs EJordan PDSNP Reading JPartlow l L Rubenstein 3 ACRS (10)

GYissi,

. .m >

f NRC Particants

FDSNP

ESGB /3 ' ' :  :  :

!.P ....:............: ,t.7. L......:............:...........  :............::...........' i

LRubenstein :GBagchi  :  :  :  :  ;

p.......:............:............:............:............:............:...........

//88 :04/ /88 :04/th/88  :  :  :  :

OFFICIAL RECORD COPY

ENCLOSURE 1 ATTENDANCE LIST FOR MEETING WITH WPPSS CONCERNING WNP-3 GEOSCIENCE ISSUES APRIL 5, 1988 .

l l

l Name Orangization Guy S. Vissing NRC/NRR/PDSNP Doug Coleman Supply System Dave Bosi Supply System Bob Crosson Univ. of Washington Bob Youngs Geomatix Consultants Kevin Coppersmith Geomatrix Consultants Bill Kiel Supply System R. L. Rothman NRC/NRR Dick McMullen NRC/RES Leon Reiter NRC/NRR i

I l

. . EfiCLOSURE 2 i s

l WNP-3 GEOSCIENCES PROGRM  ;

SCHEDULE FOR REVIEW SU8MITTAL

- Crustal Earthquakes

• Response to Questions 230.3, 230.4 and 230.5 November 1987 '

- Seismic Hazard

• Response to Question 230.6 February 1988 1 ,

EETING l - Crustal Earthquekes March 1988 SUBMITTAL i  :

j - Evaluation of Subduction Zor,e Earthquakes  ;

Response to Questions 230.1 and 230.2 April 1988 i

EETINGS ,

3 - Seismic Hazard May 1988

- Attenuation and Ground Motion Modeling July 1988

- Evaluation of Subduction Zone Earthquakes August 1988

- Open Items September 1988 l

I COMPLETE ISSUE REVIEW November 1988 I

1

i i

i i

l l

Question 230.3a .

Attention is called to FSAR Figure 2 5-31. No location errors are specified for most of the earthquakes plotted thereon, especially l Por those occurring in a region which projects to the southwest of Olympia on section AA' and particularly for depth of focus, i Referring to Crosson (1972), Figure 6, the site and most of the

, area in which these earthquakes occur is off-scale and the location errors are likely to be large. Several factors influence l

the accuracy in depth of focus, most important of which is station  !

coverage which changed greatly during the time interval covered.

The applicant is therefore asked to provide a number of diagrams  !

similar to Crosson's Figure 6 for periods which reflect  !

significant changes in network coverage and showing error bars  !

that indicate the accuracy of hypocentral locations. '

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i Question 230.3b Figure 2 5-36C shows seismicity (for example in the vicinity of Mt. St. Helens) that does not appear to have been plotted in the sections shown in Figure 2.5-31. Yet Figure 2 5-31 states that earthquakes within 150 km of a line striking N60*E through the site have been included on the section. Two questions arise:

(1) what earthquakes (if any) have been omitted from the section (Figure 2 5-31), and (2) why is the aperture for the section so wide since a width of 300 km results in earthquakes in the Willamette depression being projected to points west of the site into what may be an entirely different. tectonic province?

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Question 230.3c . 1 i

Expand your explanation of the decrease in seismicity on the sections through the site west of point B in Figure 2 5-31.

l 1

i l

4 5

4

- - - ,-e--. ,--.- -,.,- - - ,,c-. c - 3,y e . .- --y c, - - , , - - - -,.y.~---33 w,-,-y y-3,y--.-- y-e 4 m 3 - e-yww,3 ~ y ==-

• Deerease ih seismieiq "" siza

• F' lary t evaats sh % slab red <ts've 4* +f t afoundsp l' lex us

• All observed larger events hsve securred at se _

k east of flexuee

• Consistenst w iH. observa. hine af oHer en boluc%

2dne3

l 1

e s l CASHINGTON SC$uCN N y unsearce Nriueca. bara (te>isee) e cxxy m ien sara)

(kso wn ms)

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r Question 230.3d ,

The geometry and location of the flexure in the subducting plate is assumed to be the western boundary to down-dip tension earthquakes. Therefore, its position is critical. Clarify your reasoning for locating the position of the flexure.

l l

l l

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• ion .

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+- ques ver y y en ersify d o s a de'p

• Sla b-p s Il sfrerses expeded wiMoA uinb ; skes localisehde likely n/ Ws f/ex ars.

j [3OUGUER GR AVITY M AP OF '

F y~> '

GlTE AND OLYMPI A LINE AMENT '

~

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12 30' tr o y <

j.( '

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J i Yy '

"%'hE'$'

O rnm N

(:

5 \ f i ///YS ) llill .I. i. s O 4

- Olympia Lineament N ] Outcrops of Crescent Formation

!  ! '? '? ' OaCs"!nO77aEolio!",7tcruo

?  ? .< e . . ...s . n r, , , . < . . ,

,n....

SIGNIFIC ANT FAULTS AND LINEMENTS Fip 1 WITHIN 70 MILES OF SITE

~

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f "s

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Seattle.Bremertontins)

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y r + y et 0 15 M tilemeters ag m'

ft , _

str 'tr dl

't KNOWN F AULTS POSTUL ATED F AULTS

Based on minimal evidence High Angie O Thrust (barbs on upper plate)

,. PUBLISH ED LINE AMEN TS Based mainly on geophysical 4

and physiographic evidence 7

SOURCE: 'iPP55. 199?

=

Goldm Assoc:ates

Question 230.3e The Puget Sound earthquake of February 15, 1946, is a large earthquake with uncertain depth (Rasmussen, Millard, and Smith, 1974). If this event was relocated at a shallower depth or farther to the west, it may significantly alter the applicant's conclusions about the earthquake potential of the subduction interface or the overriding plate. The International Seissological Sume.ary for 1946 (1954) lists over 40 observations for this earthquake. The observations range in distance from as close as Seattle to as far as Lose in the Ivory Coast. Despite the existence of these data, the applicant chose not to do a computer relocation (FSAR p. 2 5-120). We request that the  :

applicant relocate this earthquake using the published I.S.C. data and establish the relationship of this earthquake to the Juan de Fuca-North American plate interface.

I e

l

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'D T M 20EWCM. DATA (1970-1986) & (F1l3.14.1946 RC.CCA00t; m;NS) ,

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l Figure 230.3c-2 l

f i

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- - . -_= . . . -.. , _ , , . . , _ , _ , _ _ _ _ _ - - - _ _ . _ . . . . . _ _ . _ _ - . _ , . _ . . . , . . _ - ._ . - , - - . _ . .

Question 230.4a .

Estimate the maximum magnitude possible for a "random earthquake" in the shallow crust within a 32-km radius around the site.

J k

1 P

1 4

1

~

• '# etim am maymhde poss a ble ' eva./ ue+ed bn seat on hosFero Est seismicity dnd jeo/oftes/ d's fa .

• Max im um his fortiet (5) pine It m agn ohde untt = f/C

• Creoley te st do.ta : age an 4 amount o4* l' ash and

$old de./'ormsHon

• . Inferred deep .Can If bloexe (e.g. S'. Paps! Sound.,) no+

pre sed

• 11)epped $suIhs iA site loes/N y ( w t h i Won m.) a et no f espa6te

• fis(Is an4 &I4s y en eNestly rulated k Ter&tiry deformshok Kst* dented by early Pleirfoerne

• IAn disco ver ed surC<es .folfs praeluded by .:rfrmft-frAploc %d strus.fsyn/ velsfroiskup'.s

- /kha 4e m stie Asf den + set's

- As forsa - Lehcoln dreek contwe# (fee anle.)

fe*pApicit Seemowts , ramef* senesy fr'm**me*ft lue Osaternery su.r4ces an.t deporete ,

• !.sh. Gu.s+tenary suefeesa y rt clande. L V g A /af de$5emohok, wi H.& yt col

• Mon

I Thickening of fault zones: . '

A mechanism of melange formation in accreting sediments J. Casey Moore I

Earth Sciences Board, Unrversary of Cahfornia. Santa Cruz CaWornia 950o4 Tim Byrne Department of Geological Sc>ences. Brown Urvversaty, Providence, Rhode Island 02912 j

ABSTRACT Moore and %%e'er,19781 ==b=e=wy facies rdatsons (Urderwood, j j

Sedmarums accreesd as smeder*me zones undergo strutal dhrup- 1964), and theorcocal argwmeno (Cota,1984) all suggest that tids type d  !

1 tion and forum a type of sedungs The thickness of the dienipsed remes sudmage forms dunna the ode: rapes ami undenhnanns d deep sea sed-grows with progreusse deferumanos. This suggests that baisimi famit i=== (Fis. IK The deped strosa n====e broad shear zones $st marfaces are w med dador==== propugnaes luso entrar=8 range in th=+neen from tems of meets is anodcre examples (e.g. Cowan et j undeforamed ==i=ren. Faceers canang the h of fault sur- at,1964) to kilorments in ==ne= - daava (y, Moore and Whecier, i faces darug

• M daderamense ==chas (1)- 4_ _ 4 owing 19781 Evidauly, shear zones thicbe dunas evolunos of the ac'creted 1

to poroswy loss dinrsag m, (2) Iar a==d drops Ls thsid pree. maaerial Stratal damngsm= dewtopes is perna &y eMa*4 sediments, j mere on fault surfaces that act an dowanaring e==sh=ma, and (3) reorien- as opposed to low-porcery Irrh=nM rocha, is otmous is dr0 cores from 1 tueu== of fault marfaces. The % pressamme occurring is modern accr===ary pnums and is islermi from textural ==4sen of annent l aucretionary prises resak primelpmey from em dadurummeine of a com- actr===ary er=rdem (y, Cowna,1982; Byrne,1984) Sdsuntal ]

=a.amming sediamen.t samma. dier=Te== along fault somes is nwwiers actresnonary pname is -na s4 by eig-ne== cumulatrve deplacernents as <4e= ma4 by both setstrac

[NTRODUCTION dass and drilhng (e4, Bijo-Duval et al,1984k These darupave pe omm SarsaynykssDy duropend ' =- seg*=ny a represcat one type are occurnag at edecave er=6=mq stresses that probably do not exceed )

of ==d==pr (Rayumond,1984; Cowan, !9851 tr=rhee of runriers accro. 100 MPs (i kharl Eaonmous strain is pomable dunne underthrustmg, and  ;

tionary pnums (1 =#weg and Moore,1986; Cowna et al,1984), evidence this serais ao doubt coneribunes to the ubiqury d straagraphne daruption

, frein ==r== accr=-= y n=r -==a (1t.A=== , 1982; Byrne,1984; and meinage formar== We arger, howewr, thus the pemauy consob-INCREASING CONSOUDAT10N & STRATA 1. DISRUPTION-e-nour.1. Cme =-e== et -----a-- y pseum

.howing progrese#ve eerseas enrepass endme ACM F^tus

's osecreanag sm-=.m_ osemas as uma atuandamment in oescraped seememut and ' y \

\ s1 ,' ,' s CNg l,N \N \

=A a--.e inim romes aner cowen et sL fuese  % t'%

and temere et aL (1947). Innet: DeemA ei sensep.

\

\ \ s% Y' qh )A As AseMwr3 Sam minoutung voetHome decrease (.dV) and de- .,u Th w=nertug (enh) -=6.d =*sh d=*er= mesa, M' 'oc2M' hist  :,

% ecxDe[D ~ SHCMt 20 7 .u.=a G'~*'"c'**'"******

cy'***" L *%'+?#xQty 'f, -ll, g3 ~

!Il*Ii! -

-- :3,[.., ,

men vt.4:1 sw I I l -u II1 s itu Rgure 2. Genermazed strume-strain awves las Judummates of rnuddy eediment at low coneneng pressures, W me$nst to Imbric col-tapoo (curve 1) yie6d, and stein tumenn isLS Crautard, b Post STus)erm 1959, Sierruse and Landue,1984 Cueste and h 1976). Con, a g corwey, muddy t- desmened as emmamens semesse lees than c. s u.raAarr sTuo.cm

\ A f ce ftcAd. sT A f!

those of conocedsGee (carpe 23 ummy imummame in umbeme diertry dedet. ,

masion and show peak strenget tuAmumed by Immer residual strength Y \

(aner Roscoe et sL,1950; Dame es se, ySE P ed inrtial com-solidation state, samme ,-.a =e ganade to sammespe en same uitlreate 1 ,.

strength at its crWesi sesse, a umupme and of ghmer shame, mermal eGectue , j ;;urnW stress, and poroedty comesteam. Strome heademmag temm6er to curve 1) la g Y p also shown dunng drasned deemsunseen of San Andreas faust gespo it.

(Nvorrow et al.,1982; Chu,1944) and dry catamamens of sand sind ass-stone (Borg F e'.1960; Hoehene et si,19T23 at hmgher conAnang pree- 1 ,

l sures. In each case, strev*gtheemng appeert to t>e due to poroney j reduction. Conversely, class. cal emperummaan en sandstone and shade l more typically resemt44 curve 2 uset assamey Ingher peak strengsti tal. i lowCd by lower uttsmate strengen (e g., Mandse et al,1963; bondamme s rR Asie ( C ) f et at,1972).

GIOLCsh, , 15 p 1040-ioat werwe Inf

SCHEMATIC CROSS-SECTION OF Figure 5 TRENCH SLOPE ACCRETIONARY MODEL 4

Trench Slope Break Trench  !

inner Slope

~

Trench . * '

2[h.. 'h kf*T-Oster Slope Trench ,

- l MIS .l~?)?[f-,q..,_

7

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Oceasic Lithosphere i

LOTE:

Modified from Seely et al.,1974 1 1

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Go+det Associates

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• 0shn h a kerdat seismieiiy and m emi d s m do A r d s,. ;

atfourJ b y gestoya 44 m <<u',mam possibia inapnikda 4r r o d o m s u r.a t + r4r - 6,  ;

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CHEHAllS RIVER TERR ACE PROFILES '* 3 " I 3 I,

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GEOLOGIC STRUCTURE OF SITE LOCALITY AND VICINITY Figure 1 i

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10 Mi 0 D. MW We --f,ne,,,- gyncgg,,

Anttc1 j

(

> Lineaments f sids. appreatstely located 0 4 8 12 16 k m E --- Based Ninly on geophysical

• a o and physiogrphic evidence Showing trace of Antal Plane .

s. and Direction of Plunge

• • Esposure of crescent Formation

,, g,  ;

Figures 2.5 40, 2.5-42 1

-Golder Associates

1 CONTOUR MAP OF THE ELEVATION OF #

THE TOP OF THE WEDEKIND CREEK FORMATION r u t1on 4

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/' '\ Mon t e s ano r , , _ a<

q' y Geologic Data from:

g7 Carson (1970). G).,er and Pease (1955); Dau (1967)

'V\ Nte: Contours in feet; oots incteste ele.atton dat) N 'nt 5

=^ Golder Anocia'es

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QU ATERN ARY CORRELATION CH ART Figure 2 8 c WYN00CHEE/ HUMPTULIPS/ TIME, YEARS g 8 CHEHALIS QUINAULT

8. P.

g S AREA AREA "c

8

• W Low Fraser Chow Chow Terrace Drift -- 20,000

- 40,000

- 4 .

~

High Fraser Terrace

( / - 80,000

- 100,000 E E - 120,000

< d o

E w &

-140,000 Q $

cr g S H

\almon TerracesSpring [s\ uesptulips Drift - 160,000

- 180,000

- 200,000 Helm Creek Donkey Creek j

v

\ Terrace

/\ Till(?) /- 400,000 i - 600,000 o.

r

- 800,000 Wedekind Creek Formation - 1,000,V00 s

a\

T SOURCES: VPP$$. 1982;

? McCtvnb and West. 1981;

• Coleaian and Pierce. 1931; Ca rson , 1970;

,y Nore. 1965 Goldet Associatos v

I Question 230.4b Inasmuch as the 17 March 1904 earthquake has not been associated with a structure at any of its various hypothetical locations i (pp. 2 5-127, 128, FSAR), shown why the size'of this earthquake ,

should not be considered the size of the "random earthquake". ,

P I

l l

l

t Question 230.4c l -

With respect to the 17 March 1904 earthquake, provide all.

references not in the public sector for the intensities shown in Figure 2.6-90, as well as for any other locations for which information is available which could be used to assess intensity.

Provide the documentation for the relocation of the earthquake to l "south of Port Townsend" and the assignment of a smaller size 1 (both attributed to the Pacific Science Center, Victoria, B.C. , as l "Milne, 1981, private communication" and "Rogers, 1981, private )

communication").

l I

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@a eri  % < s.W 3 t s o s < < L ~ ., lt s up p*N

e. v .~ 4 loc lJ on weal 4r, s. d g .a. e4 S our.1 ses's.,44, w e.

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O -., s o $*m/" Figure 230.4b-1 Published Locations for o - . e imm/o 1904 Earthquake o ... i o iso 4m/n

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P Question 230.4d .

Identify the maximum historical earthquake, not associated with known geologic structure, in the tectonic province of the site.

Following Appendix A to 10CFR100, assume this earthquake can occur in the vicinity of the site, estimate the resulting ground motion, and assess the adequacy of the SSE spectrum for this occurrence.

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Table 230.4d-1. RECORDS USED 114 STATISTICAL ANALYSIS Epic Date Fault M1 Station Dist Coop F64 Earthavake Waee Ita) (

f tpe No 0.q 5.0 2229 6.4 N00E u7) 6 Hele u , Montana (A) 11/28/35 Noreal 0.088 Weleu, Montana ( A) 11/28/35 Norul 5.0 2229 6.4 N90E San Francius, CA 3/22/57 Strike $ lip 5.3  !!!7  !!.7 N!0E 0.105 San Franchus, CA 3/22/57 StriteSlip 5.3  !!!7 11.7 580E 0.127 -

Lytle Creet, CA 9/1200 Reverse 5.4 111 18.9 585E 0.086 tylle treet, CA 9/12M0 Rever se 5.4  !!! 18.9 505W 0.057 Grnille, CA (M) 8/3n5 Merul 4.6 1543 2.7 500E 0.255 4.6 1543 2.7 N9M 0.140 Greville, CA (M) 8/3/75 Ner nal 2.8 SOM 0.470 Ornille, CA t AF) 816n5 Nereal 4.7 1543 Oroville, CA (AF) 8/6n5 lloral 4.7 1543 2.8 N9% 0.229 Oraville, CA (M) 8/8/75 Woraal 4.9 1551 5.8 $55E 0.077 Dreville, CA (M) 8/In3 Wersal 4.9 1551- 5.8 N35E 0.109 Oreville, CA (M) 8/8/75 Normal 4.9 1543 1.1 500E 0.274 Droville, CA iM1 8/8n5 Warsal 4.9 1543 1.1 M90E 0.116 Oroville, CA iM) 9/27n$ lleenal 4.6 1495 10.2 N90W 0.155 Drnille, CA (M) ?/27n5 neraal 4.6 1495 10.2 SOM 0.075 Dreille, CA (M) 9/27/75 renal 4.6 1543 2.1 500E 4.163 trnille, CA (M) 9/27n5 lisr eal 4.6 1543 2.1 N90E 0.203 Ornille, CA (M) 9/27U5 neraal 4.6 1552 20.8 N2W 0.067 Dreville, CA ( M) 9/27/75 Hereal 4.6 1552 20.8 S7W 0.050 iltaly 09/1106 Reverse 5.5 8019 10.0 NORT 0.039 Friuli 5.5 8019 10.0 EAST 0.034 Frieli iltaly 09/11n6 Reverse 15.5 NORT 0.042 Friell iltaly 09/11n6 Reverse 5.5 8022

,ltaly 09/11n6 Reverse 5.5 8022 15.5 EAST 0.071 Friuli 5.1 46 4.1 #90E 0.353 Coalinga, CA AS03 05/09/83 Rever se N0M 0.302 5.1 46 4.1 Coalinga, CA A503 05/09/83 Reverse NOM 0.114 Coatinga,CFA503 05/09/83 Reverse 5.1 61 3.3 5.1 61 3.3 W900 0.152 Coatinga, CA A503 05/09/83 Rever se N00E 0.177 5.1 65 1.3 Coatinga, CA AS03 05/09/83 Reverse Coatinoa, CA AS03 05/09/83 Reverse 5.1 &$ l.3 N90W 0.240 5.3 46 14.4 N90E 0.074 Coatin94, ti A310 07/09/83 Reverse N00E 0.056 Coalinga, CA ASIO 07/09/83 Reverse 5.3 46 !4.4 Caalinga, CA AS13 07/21/t3 Reverse 5.0 46 11.2 #90E 0.031 Coalinga, CA A513 07/21/83 Reverse 5.0 46 11.2 NOM 0.045 Coatinoa, CA A514 07/25183 Reverse 5.1 46 12.0 M90E 0.201 Coalinga, CA A634 07/2"/53 Reverse 5.1 46 12<0 N00E 0.178

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Table 230.4d-2. ROCK STRONG-MOTION RECORDING STATIONS Stn.* Station Name Station Description No.

• Instrument Housing (Ref.) Subsurface Condition.s (Ref. )

46 CDMG COALINGAi SKUNK HOLW W Free-field (07) . Pliocene Marino (06) 61 USGS COALINGA: SKUNK HOLWW Coccrete Oil-pump Pad (07) Pliocene Marino (06) 65 USGS COALINGA: OIL FIELDS FIRE STATION Concrete Hose-rack Pad (07) Pliocene Marino (06) til CEDAR SPRINGS: MILLER CANYON, ALLEN RANCH, CDW9 1-Story B1dg. Part Best (01) Quartz Diorite (02). Granodiorite (08) 1117 SF: COLDEN GATE PARK Instrument Shelter (01) Franciscan Chort and Shale (02) 1495 CDMG8 CDMG TEMP STAT 8 AT OROVILLE CA 1-Story B1dg. Ground (01) Greenstone (01) 1543 DWR DEPT WATER RESC TEMP STAT OROVILLE 1-Story Bldg. Occund (01) creenstone (01) v 1551 CDMc6 CDMG TEMP STAT 6 AT OROVILLE CA 1-Story Bldg. Ground (01) Greenstone (01) 1552 CDMG9 CDMG TEMP STAT 9 AT OROVILLE CA 1-Story Bldg. Ground (01) Greenstone (01) 2229 HELENA. MT: FEDERAL BUILDING. PARK & CLARK II-Story Bldg. Best (01) Limestone (02) 8019 SOMPLAGO D. ITALY Undergound (23) Rock 8022 S. ROcCo. ITALY Free-field (23) Rock (23) 46T03 COALINGA: SULPHUR BATHS Free-field (21) Pliocene Marine (06) 46TO6 OILFIELDS: SKUNK HOLLOW Free-field (21) Pliocene Marine (06)

NOTE: (1) Number in parentheses within station name for CDMG Stations is the USGS Station Number.

These stations are now part of the CDMG California Strong Mation Instrumentation Program.

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EAtikouAKE DATE RUPT MW ML STAW class EPO CLD CSP PCA WAX OMAX FILE WAME 60 rectrds total Parkfield, CA 6/27/66 str nestip 6.1 5.6 1438 ASA 38.4 9.9 N65W 0.282 14.50 4.70 pt661438.295 Parkfield, CA 6/27/66 strikestip 6.1 5.6 1438 ASA 38.4 9.9 525W 0.411 22.50 5.50 Pt661435.205 toma, Irdia 12/10/67 strikestip 6.3 6.3 9001 DAA 7.0 3.0 LONC 0.631 31.98 7.75 (0Y9001.1 tome, treia 12/10/67 strikestip 6.3 6.3 9001 CAA '7.0 3.0 TRAW 0.490 19.43 4.07 K0Y9001.2 Oroville, CA (m) S/1/ 75 Wormet 5.9 5.7 1051 AAA 12.6 9.5 W53W 0.103 4.80 0.69 OWW1051.307 i Orovit t e, CA (m) 8/1/ 75 Wormel 5.9 5.7 1051 AAA 12.6 9.5 W37E 0.108 4.10 0.69 OWN1051.037 Friull sew em e 9/11/76 thrust 5.5 5.5 8022 AaA 15.0 15.5 Woti 0.042 0.00 0.00 FtT8022. Wet Friutt seguem e 9/11/76 thrust 5.5 5.5 8022 AsA 15.5 15.5 EAsf 0.071 0.00 0.00 FtT8022.EAS

, Friuli Sewerte 9/11/76 Thrust 5.9 5.9 8022 ABA 14.5 14.5 Noti 0.091 3.51 0.21 Ft28022.Wot

' F r iuli sequenc e 9/11/76 thrust 5.9 5.9 8022 ASA 14.5 14.5 EAsi 0.093 4.41 0.19 Ft:8022.EAs Friull sequem e 9/15/76 thrust 6.1 6.1 8022 ABA 9.0 9.0 Woti 0.069 5.44 0.90 FestS022.WCR Friuli Sewerce 9/15/76 thrust 6.1 6.1 8022 ABA 9.0 9.0 East 0.123 6.56 1.58 FestS022.EAS Coyote take, CA 8/6/79 Strike $ lip 5.7 5.7 1445 ASA 1.8 3.2 W70E 0.230 20.49 2.38 C0Y1445.250 Coyote Lake, CA 8/6/79 strikeslip 5.7 5.7 1445 ASA 1.8 3.2 W20W 0.160 11.48 1.07 C0Y1445.160 Coyote Lake, CA 8/6/79 Strikestip 5.7 5.7 1408 AIA 15.7 9.3 540E 0.130 10.32 1.73 C0f1408.320 Coyote Lake, CA 8/6/79 strikestip 5.7 5.7 1408 ASA 15.7 9.3 W50E 0.100 3.99 0.66 C0f1408.230 l Coyote Lake, CA 8/6/79 strikestip 5.7 5.7 1413 AsA 10.3 3.1 540E 0.34 0 25.06 3.62 C0Y1413.320 -

' Coyote Lake, CA 8/6/79 Strikeslip 5.7 5.7 1413 ASA 10.3 3.1 W5CE 0.420 43.84 9.34 COY 1413.230 l 1special Valley (M) 10/15/79 Strikeslip 6.5 6.6 286 AAA 0.0 26.0 545E 0.210 9.02 1.72 Iv79286.135 l !special valley (M) 10/15/79 strikestip 6.5 6.6 286 AAA 0.0 26.0 W45E 0.120 4.86 1.37 Iv79286.045

!special valley (M) 10/15/79 strikestip 6.5 6.6 6604 AAA 0.0 23.5 W57W 0.157 18.72 8.75 tv796604.303 l 1special vattey (M) 10/15/79 strikestip 6.5 6.6 6604 AAA 0.0 23.5 533E 0.1M 12.14 12.58 tv796604.147 namoth Lakes A 5/25/80 strikestip 6.2 6.1 54214 AAA 12.7 15.5 090 0.079 7.12 3.37 M54214LA.090 masecth Lakes A 5/25/80 strikestip 6.2 6.1 54214 AAA 12.7 15.5 000 0.125 15.10 5.67 M54214LA.000 massmoth Lakes A 5/25/80 strikeslip 6.2 6.1 54214 AAA 12.7 15,5 090 0.068 6.15 2.93 M54214Ca.090 Kamoth Lakes A 5/25/80 strikeslip 6.2 6.1 54214 AAA 12.7 15.5 000 0.109 15.80 5.35 M54214CR.000 namoth '.akes C 5/25/80 strikeslip 6.0 6.1 54214 AAA 10.9 19.7 090 0.0 75 6.25 1.50 C54214LA.090 i

Kamoth Lakes C 5/25/ 80 strikeslip 6.0 6.1 54214 AAA 10.9 19.7 000 0.088 6.78 1.20 C54214LA.000 I masacth Lakes C 5/25/80 strikeslip 6.0 6.1 54214 AAA 10.9 19.7 C90 0.060 5.63 1.29 C54214Ct.090 massmoth Lakes a C 5/25/80 strikeslip 6.0 6.1 54214 AAA 10.9 19.7 000 0.112 5.77 1.27 C54214Ct.000 l massmoth Lakes C01 5/25/80 strikest ip 5.7 5.7 54214 AAA 14.2 14.4 090 0.063 3.58 0.51 L54214LA.090 masucth Lakes C01 5/25/ 80 strikeslip 5.7 5.7 54214 AAA 14.2 14.4 000 0.099 7.63 1.02 L54214LA.000

( mammoth Lakes C01 5/25/80 strikeslip 5.7 5.7 54214 AAA 14.2 14.4 090 0.043 2.12 0.42 L54214Ct.090 mammoth Lakes C01 5/25/80 strikestle 5.7 5.7 54214 AAA 14.2 14.4 000 0.083 6.86 0.95 L54214Ct.000 nammoth Lates 0 5/27/80 strikeslip 6.0 6.2 54214 AAA 14.1 20.0 090 0.207 20.80 3.50 054214LA.090 namm th Lates 0 5/27/80 strikestfp 6.0 6.2 54214 AAA 14.1 20.0 000 0.208 12.40 1.30 054214LA.000 namoth Lakes 0 5/27/80 strikestip 6.0 6.2 54214 AAA 14.1 20.0 090 0.180 17.70 2.86 054214Ct.090 sammoth takes 0 5/27/80 strikestip 6.0 6.2 54214 AAA 14.1 20.0 000 0.219 8.01 0.96 054214Ct.000 l mammot h L ak es 0 $/27/80 strikeslip 6.0 6.2 54424 AAA 20.0 24.5 160 0.119 5.46 1.36 054424.160 nommoth Lakes 0 $/27/80 strikeslip 6.0 6.2 54424 AAA 20.0 24.5 070 0.093 5.85 1.69 054424.070 menicall valley, MX 6/9/80 strikestip 6.4 6.4 6604 AAA 31.0 5.5 W45t 0.611 32.53 59.63 Mx806604.045 l Kenicali Valley. mX 6/9/80 strikestip 6.4 6.4 6604 AAA 31.0 8.5 545E 0.603 23.27 20.90 Mx806604.135 l Coatinga, CA As12 07/21/83 Thrust 5.9 6.0 67 UA 6.0 9.5 W00E 0.960 46.82 4.40 C0567.000

( Coatinga, CA A512 07/21/83 thrust 5.9 6.0 67 UA 6.0 9.5 W90W 0.335 46.56 6.15 C0567.090 1 Coatinga, CA A512 07/21/83 thrust 5.9 6.0 46 UA 13.3 15.3 W90E 0.116 5.63 0.49 C0546T03.090 Coatinga, CA as12 07/21/83 thrust 5.9 6.0 46 UA 13.3 15.3 WOCE 0.136 5.57 0.76 C0546703.000 Coatinga, CA As12 07/21/83 Thrust 5.9 6.0 65 UA 8.5 11.3 WDCE 0.219 16.67 3.71 C0565P.360 ,

oatinga, CA A112 07/21/83 Thrust 5.9 6.0 65 APA 8.5 11.3 W9N 0.218 16,91 3.52 C0565P 270 i

catings, CA As12 07/21/83 Thrust 5.9 6.0 61 APA 10.0 12.4 WOCE 0.231 14.86 3.65 C0561.360  ;

oatinga, CA A512 07/21/83 Thrust 5.9 6.0 61 UA 10.0 12.4 W90W 0.375 16.23 3.27 C0561.270 1

oatinga, CA A512 07/21/83 Thrust 5.9 6.0 65 MA 8.5 11.3 WOOE 0.194 15.88 3.50 C05657.360 l C alinga, CA As12 07/21/83 thrust 5.9 6.0 65 UA S.5 11.3 W90W 0.219 16.78 3.39 C0565F.270 l corgan zitt, CA 04/24/84 Strikestip 6.2 6.2 57217 AsA 24.1 0.1 W75W 1.304 97.70 10.50 Mn57217.2!5

• organ Kill, CA 04/24/84 Strikeslip 6.2 6.2 57217 ABA 24.1 0.1 515W 0.707 51.90 10.30 Mn57217.195 morgan Mill, CA 04/24/84 Strikestip 6.2 6.2 57383 ABA 35.9 11.8 W90E 0.293 16.60 5.24 4457383.090 morgan Witt, CA 04/24/84 Strikeslip 6.2 6.2 57383 ABA 35.9 11.8 WOCE 0.228 11.30 1.81 MM 57383. 000 l morgan Milt CA 04/24/84 Strikeslip 6.2 6.2 47379 ASA 38.6 16.2 W40V 0.100 2.66 0.48 M M47379. 320 l morgan Will, CA 04/24/84 strikestip 6.2 6.2 47379 ABA 38.6 16.2 550V 0 .0 73 2.52 0.30 M M47379.230 zerth Pala springs 7/8/86 strikestip 5.9 5.9 12204 AKA 25.2 25.8 W90E 0.119 3.60 0.50 kPS12206.1 c:rth Pale springs 7/8/86 Strikeslip 5.9 5.9 12206 AKA 23.2 25.8 WOCE 0.145 3.82 0.23 h*s12206.3 l

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Question 230.5 l

Estimate site-specific spectra for a range of percentiles for the maximum earthquake on the Olympia Lineament, using strong-motion data in the appropriate magnitude and distance range. Justify the 1 SSE spectra in light of the site-specific spectra, i ,

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6 O 10 20 30 40 50 60 Distance (km)

Figure 230.5-1. Scattergram of Recordings Used in Analysis l

i

Tale 23v.5-1 g RECCH S USED IN STAllSilCA1. ANAL.YSIS g Ettthquate Nase Date fault h Station Dist Coop Aean ScalingFactor i ine Ital (p Sees J-l caso l San Fernando. CA 02/09/71 Thrust 6.6 279 2.8 S16E 1. l M 0.2677 0.3206 0.2571 San Ferundo, CA 02/0901 Thrust 6.6 279 2.8 574W l. m 0.2677 0.3206 0.2571 San Ferundo, CA 02/0901 ihrust 6.6 26e 19.1 SMW 0.096 0.8449 0.8452 0.9162 San Ferundo, CA 02/0901 Thrust 6.o 266 19.1 590W 0.204 0.8449 0.5452 0.ilel San Fernando, CA 02/0901 Thrust o.6 126 24.2 $69E 0.200 1.0%0 1.0717 1.17 d San Fernanh , CA 02/0701 thrust 6.6 126 24.2 S21W 0.159 1.0%9 1.0717 1.1743 San Ferundo, CA N/0ldt thrust e.o  !!7 23.5 N21E 0.147 1.0515 1.0315 1.1374 San Fernanh . CA 02/0971 ihrust 6.6 127 23.5 N61W 0.131 1.0515 1.0F 5 1.1374 San FernaMo. CA 02/09n1 thrust 6.6 123 20.3 N2tE 0.37* 0.i002 0.546 0.17,7 San Ferasndo. CA 02/09/71 Thrust 5.6 125 20.3 N69W 0.288 0.9009 0.8965 0.9747 i San FeruMo, CA 02/0901 Thrust 6.6 220 15.3 M 0.181 0.68^0 0.68 % 0.7318 l

15.3 59W 0.154 San Ferundo, CA 02/09n1 Thrust 6.6 220 0.6800 0.6898 0.7398 ~

San Ferunn, CA 02/0901 Thrust 6.6 141 17.4 $00W 0.188 0.7688 0.7742 0.8356 San Ferundo, CA 02/0901 Thrust 6.6 141 17.4 $1W 0.100 0.7688 0.7742 0.8356 l San Ferundo, CA 02/0901 Thrut 6.6 121 29.1 556E 0.068  !.3695 1.3066 1. 4 55 l San Ferunde, CA 02/0901 Thrust 6.6 121 29.1 N34W 0.103 1.3695 1.3066 1.H55 i San Fernanh, CA 02/0901 Thrust 6.6 104 27.0 NO3E 0.172 1.2484 1.2039 1.3265 i San Ferunh, CA 02/0iil Thrnt 6.6 104 27.0 W87V 0.223 1.2484 1.2039 1.3265 San Ferunk, CA 02/0901 Thrust 6.6 278 50.4 N35E 0.078 2.9351 2.5151 2.9023 San Ferunk, CA 02/09n1 N est 6.6 278 50.4 N35W 0.059 2.9351 2.5151 2.9023 64 li, !!SSR 95/17n6 Thrnt 6.8 9201 3.0 WORT 045 0.2642 0.2908 0.2517 Barli,tlSSR 05/17 n6 Thr n t 6.1 9201 3.0 EAST 0.699 0.2642 0.2908 0.2517 14645,Iraa 09/16n8 Nnt 7.4 9101 3.0 ul6W 0.810 0.2430 0.2117 0.2249 Tabu, Iran 09/lkn8 Threst 7.4 9101 3.0 574E 0.700 0.2430 0.2117 0.2249 fabas,tran 09/16n8 Threst 7.4 9102 17.0 NSW 0.379 0.5258 0.4961 0.5327 Tabas, Iran 09/1608 thrust 7.4 9102 17.0 NIM 0.391 0.5258 0.4961 0.5327

!aperial Valley (M) 10/15 n9 StriteSlip 6.5 284 26.0 S45E 0.210 1.2647 1.2190 1.3533 leoerial Valley (R) 10/15 n9 StriteSlip 6.5 294 26.0 #45E 0.120 1.2667 1.2190 1.3583 )

leperial Valley IM) 10/1569 StriteSlip 6.5 6604 23.5 N57W 0.157 1.1224 1.096' l.2135 leperial Valley (MI 10/1509 Strike $ lip 6.5 6604 23.5 533E 0.164 1.1224 1.C761 1.2135 Irpinia, Italy 11/23/80 h rea: 6.8 l-1 0.0 M 0.133 0.3903 0.3916 0.4037 Irpinia, Italy 11/23/80 Norsal 6.3 l-! 8.0 M9M 0.191 0.3903 0.3918 0.4037 Irpinia, Italy 11/23/80 Norsal 6.8 Cal 20.5 N00E 0.159 0.8195 0.8145 0.8719 ftpinia, Italy 11/23/80 hrsal 6.8 Cal 20.5 M9M 0.177 0.8195 0.8145 0.8719 Csalino , CA N in 05/02/83 Thrust 6.5 4 175 35.0 N45E 0.173 1.8624 1 6182 1.9339 Culinga, cal.ain 05,02/83 ihrest 6.5 4 175 35.0 $452 0.137 1.8624 1.6982 1.9339 Culinga, CA Nin 05/02/83 Thrnt 6.5 34177 33.7 N65E 0.179 1.7689 1.6255 1.8455 Coaling;, CA Main 05/02/83 N o t 6.5 34177 33.7 M25W 0.122 1.7689 1.6255 1.8455 Coalinga, CA Nin 05/02/83 knt 6.5 36176 41.2 57M 0.139 2.3430 2.0615 2.3813 Coalinga, CA N in 05/02/83 Nest 6.5 34176 41.2 N29E 0.101 2.3430 2.0615 2.3813 Coalinga, CA Nin 05/02/83 knt 6.5 36438 43.2 N90E 0.065 2.5103 2.184 2.5348 Caslinga, CA N in 05/02/83 knt 6.5 34438 43.2 N00E 0.074 2.5103 2.18u 2.5348 Coa.inga, CA N in 05/02/83 W est 4.5 36422 49.1 M90E 0.099 3.0395 2.56% 3.0145 Coa 11nga, CA his 05/02/33 Threst 6.5 34422 49.1 1600E 0.062 3.0395 2.56 % 3.0145 Coatinga, CA h is 05/02/83 West 6.5 36453 39.6 N90E 0.087 2.2134 1.9652 2.2618 Coalinga, CA h is 95/02/13 Threst 6.5 36453 39.6 W 0.079 2.2134 1.9652 2.2618 Coatings, CA M in 05/02/13 Nnt 6.5 344 % 41.3 N9M 0.133 2.3512 2.0676 2.3889 Coalinga, CA N ia 05/02/13 Ibryst 6.5 364 % 41.3 HM 0.075 2.3512 2.0676 2.3889 Coplinga, CA Nain 05/02/93 Nnt 6.5 34420 50.2 590t 0.123 3.two 2.6384 3.1085 Culinga, CA Nin 05/02/83 N est 6.5 34420 50.2 M 2 428 3.lH0 2.6384 3.1085 Nahanni, Cauh 12/23/d5 Threst 6.9 0 6.0 Il0E I.101 0.3286 0.3258 0.3290 Nahanni, Cauda 12/23/85 Thrust 6.9 0 6.0 N60W l.345 0.3286 0.3258 0.3290 Nahanni, Cauda 12/23/85 Thrist 6.9 0 1.0 R30W 0.418 0.3789 0.3716 0.3878 Nahanni, Ca u h 12/23/85 N est 6.9 0 8.0 $60W 0.585 0.3'/89 0.3716 0.3876 Nahanni, Canada 12/23/35 thrsst 6.0 0 16.0 NME 0.1% 0.6176 0.6121 0.6527 Nahanni. Canau 12/23/85 ihrust 6.4 9 16.0 N90W 0.196 0.6176 0.6121 0.6527

Table 230.5-2. ROCK STRONG-HOTION RECORDING STATIONS Stn.* Station Name Station Description Instrument Housing (Ref.) Subsurface Conditions (Ref.)

...................c.........c.....................................................................................................

No.

• 104 ARCADIA: SANTA ANITA DAM; RIGHT ABUTMENT Instrument Shelter (02) Granodiorite to Quartz Diorite (02) 121 FAIRMONT RESERVOIR: RIGHT ABITTMEffr 1-Story Bldg. Ground (03) Sa Soil over Granite (02). cranite (01)

Weathered Granite (01) 126 LAKE HUGHES ARRAY #04:

127 LAKE HUGHES AMP.AY #09: WARM SPRINGS Instrument Shelter (01) 1-Story Bldg. Grcund (01) Gneiss (01). 3a Soil over Granite (02)

In-3m Soil over Conglomerate (01) 128 LAKE HUCHES ARRAY #12: ELIZA CaH LAKE 1-Story Bldg. Ground (01) 141 LA: GRIFFI'D1 PARK OBSERVATORY 3-story Bldg. Ground (01) Granite (01) 220 LA: 3838 LANKERSHIM BLVD 20-story Bldg. Best (01 Shale / Sandstone (01) 266 PASADENA: OLD SEISM LAB. CIT 3-Story Bldg. Best (01) Cranite (01)

Instrument Shelter (02) Volcanic Conglomerate (02) 278 PUDDINGSTONE RESERVOIR DAM: LEFT ABITTHENT 279 PACOIMA DAM: LEFT ABITINENT Instrument Shelter (02) Gneiss Diorite/ Quartz Diorite (02) 286 SUPERSTITION HOUlrTAIN: USAF CAMERA SITE 1-Story Bldg. Ground (01) Granite (01)

Free-field Instrument (13) Bedrock (13) 6097 MACKENZIE MTNS. NW TERR. CANADA: NAHANNI SITE 1 Free-field Instrument (13) Bedrock (13) 6098 MACKENZIE MTNS. NW TERR. CANADA: NAHANNI SITE 2 6099 MACKENZIE MTES. NW TERR. CANADA: NAHANNI SITE 3 Free-field Instrument (13) Bedrock (13)

Instrument Shelter (01) Rock (01). Basaltic Tephra (11) 6604 CERRO PRIETO. MEXICO 8026 BAGNOLI IRPINO. ITALY 1-story Bldg. Ground (24) Limestone and Dolomitic Limestone (24) 1-story Bldg. Ground (24) Sandstones (24) 8031 CALITRI. ITALY Basalt 9001 K0YNA DAM. INDIA: SEISMOGRAPH STATION Das Gallery Small Bldg. Ground (22) la-2a Soil over Weathered Rock (22) 9101 TABAS. IRAN Cretaceous timestone (15) 9102 DAYHOOK, IRAN Small Bldg. Ground (15)

Interbedded Clay and Sandstone (12) 9201 KARAKYR POINT. USSR Portable Station (12)

(14G3) Instrument Shelter (01) Sandstone (18) 36176 PARKFIELD: VINEYARD CANYON #03W Franciscan (18) 36177 PARKFIELD: VINEYARD CANYON #02E (1406) Instrument Shelter (01) Sandstone (18) 36420 PARKFIELD GOLD HILL #03W Instrument Shelter (18)

Instrument Shelter (18) Sandstone (13) 36422 PARKFIELD: STONE CORRAL #02E Sardstone (18) 36438 PARKFIELD: S*!VNE CORRAL #04E Instrument Shelter (18)

Instruacnt Shelter (18) Sandstone (18) 36444 PARKFIELD: FAULT ZONE #10 Thin Soil over Sandstone (18) 36453 PARKFIELD: FAULT ZONE #11 Instrument Shelter (18) Granite (01) 46175 SLACK CANYON: HIDDEN VALLEY RANCH (1404) Instrument Shelter (01)

NOTE: (1) Number in parentheses within station name for CDMG Stations is the USGS Station Number.

These stations are now part of the CDMO California Strong Motion Instrumentation Program.

9

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Figure 230.5-2. Site-Specific Spectra Based on Statistical Analysis of Recorded Spectra Scaled to Magnitude 7.5 and Distance 35 km

a .

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Figure 230.5-3. Site-Specific Spectra Based on Weighted Statistical Analysis of Recorded Spe"tra  !

Scaled to Magnitude 7.5 and Distant 4 km l

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. Figure 230.5-4. Site-Specific Spectra Based on Empirical Attenuation Relationships

l l

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l Figure 230.5-5 Comparison of Statistical and Empirical Site-Specific Spectra l

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Figure 11. Resuh.s of recaver functxm modeling as one station in the Satsop rework. Two back azimuths are shown. Doced traces rqresent the average of stacked data, with path and source effects rernoved by demnvolution. Solid naces represent response to a theoretical slab modeJ at 37 k n depth benes 2 the array dipping at 25' at an ar.imuth of 125'.

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Figurc 10. Schemane cross sectaoo of a broad band experiment to record P to S energy conversions arising from teleseismic P v2ves impinging on a subducting slab. Rays commg from down-dip direction wiB produce efficient P to $ conversion, while rays coming from up-dip will poduce less ef6cient conversion.

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