UNITED STATES DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY

IN-SITU MEASUREMENTS OF SEISMIC VELOCITY AT 19 LOCATIONS IN THE LOS ANGELES, CALIFORNIA REGION

by

Thomas E. Fumal, James F. Gibbs, and Edward F. Roth

Open-File Report 81-399

This report is preliminary and has not been edited or reviewed for conformity with Geological Survey standards and nomenclature

Any use of trade names and trademarks in this publication is for descriptive purposes only and does not constitute endorsement by the

U. S. Geological Survey

CONTENTS

INTRODUCTION ........................ 1

SELECTION AND LOCATION OF SITES. .............. 2

DRILLING AND SAMPLING PROCEDURES .............. 2

RECORDING PROCEDURES .................... 3

REDUCTION OF GEOLOGIC DATA ................. 4

Description of Samples. ................ 4

Geologic Log. ..................... 5

Density Measurements. ................. 6

REDUCTION OF SEISMIC DATA. ................. 6

Identification of Shear Wave Onset. .......... 6

Travel Times and Average Velocities .......... 7

Interval Velocities and Elastic Moduli. ........ 8

SUMMARY OF RESULTS ..................... 11

ACKNOWLEDGEMENTS ...................... 11

REFERENCES ......................... 12

FIGURES. .......................... 13

TABLES ........................... 84

INTRODUCTION

Studies conducted in the San Francisco Bay Region (Gibbs, Fumal and

Borcherdt, 1980) have shown that average shear-wave velocity can be related to

quantitative estimates of ground motion such as amplification from nuclear

explosions and earthquake intensity. Furthermore, when certain physical

properties of the geologic materials such as texture, hardness and fracture

spacing are described during geologic mapping, a method can be used to predict

shear-wave velocity from descriptions of geologic units, (Fumal, 1978). By

measuring shear-wave velocities in representative geologic units, regional

maps depicting the earthquake hazard can be compiled.

These studies are presently being extended to the Los Angeles Basin and

Oxnard-Ventura, California, areas. To date, shear and compressional waves

have been measured in boreholes at 46 locations. A previous report (Gibbs,

Fumal and Roth, 1980) summarized seismic and geologic data at sites 1-27.

This report presents the data for sites 28-46. At each location seismic

travel times are measured in drill holes, normally at 2.5 m intervals to a

depth of 30 m. Geologic logs are compiled from drill cuttings, undisturbed

samples and penetrometer samples. The data provide a detailed comparison of

geologic and seismic characteristics and parameters for estimating strong

earthquake ground motions quantitatively at each of the sites.

SELECTION AND LOCATION OF SITES

The selection of sites 28-46 (fig. 1) in this study was guided by the

availability of other data in the Los Angeles area that are applicable to the

overall problem of estimating earthquake ground motions. These data are (1)

strong motion records from the 1971 San Fernando earthquake, (2) ground motion

recorded from nuclear explosions and (3) geologic mapping (in progress).

Sites are selected on the basis of each data set with priority given to the

order listed.

DRILLING AND SAMPLING PROCEDURES

At each site selected, a hole 12.4 cm in diameter is drilled to a depth of

30 m using a truck-mounted drill and a rock bit with mud and water

circulation. The boring is then cased with 7.6 cm diameter PVC plastic pipe

and backfilled with drill cuttings and "pea" gravel. Casing insured

accessibility of the hole and provided a secure clamping surface for the

seismic probe.

Samples are taken in each of the holes at depths of approximately 3 m,

7.5 m, 30 m, and at boundaries defined by continuously monitoring the drill

cuttings and the drill reaction. The type and number of samples taken at each

site is determined by the type of material, the number of significant

lithologic boundaries, and variations in weathering.

In soils, standard penetration measurements are made and undisturbed

samples are taken using a "Pitcher" core barrel and a "Shelby" thin tube

liner. Pitcher barrel samples are also taken in soils with large amounts of

hard rock fragments and in firm rock. Samples are obtained in hard rock using

a core barrel with a diamond core bit.

RECORDING PROCEDURES

Congressional waves are generated at each site by the vertical impact of a

sledge hammer on a steel plate. A signal produced by the opening of a switch

attached to the hammer is recorded for determining origin time.

Shear waves are generated using the horizontal traction source introduced

by Kobayashi (1959) and discussed by Warrick (1974). Briefly, the method

consists of applying a horizontal impact to a large timber (244 x 30 x 18

cm). The timber is placed on a flattened soil surface and held firmly in

place by the front wheels of a truck. A steel pipe extends through the timber

and supports a 30 kg hammer to which is attached an impact switch. The

specially constructed hammer rolls on bearings and moves a distance of 45 cm

along the pipe before impacting the timber. The "horizontal traction" source

generates a high proportion of S- and P-wave energy. The timber is struck

twice, once in each direction. The two impacts reverse the polarity of the

S-waves but not the polarity of the smaller amounts of P-wave engery.

Comparison of the two signals provides an important tool for identifying the

onset of the S-wave.

The timber is offset 2.0 m from the hole and a three-component geophone

package (natural frequency 14 Hz) is placed within 9 cm of its center. The

signals recorded from the surface geophones are used to monitor the input

signals and determine the origin time for the generated S-waves. The

arrangement of timber, steel plate, and surface geophone package is

illustrated in figure 2.

The P-waves generated by a vertical impact on the steel plate and the

S-waves generated by striking the timber in both directions are recorded

separately. This procedure is repeated for each 2.5 m interval (closer

spacing is sometimes used to obtain a velocity in thin layers) in the drill

hole.

Two downhole geophones were used in this study. One has an inflatable

diaphragm and a declinometer which under most circumstances permits

orientation of the horizontal geophones from the surface. Proper orientation

(parallel and perpendicular to the source) aids in identifying the onset of

the S-wave. A second downhole geophone was used as a backup instrument in

several holes in this study. This geophone has a spring clamping mechanism

and cannot be oriented from the surface. Both instruments detect three

components of motion.

The signals from the downhole and surface seismometers and the impact

switches are recorded on photographic paper. The velocity unit-impulse

response of the recording system is essentially flat from 2 Hz to above 100

Hz. A detailed description of the recording instrumentation is presented by

Warrick and others (1961). The recording oscillograph is modified for this

project by adding 500 Hz galvanometers and increasing the paper speed to

46 cm/sec.

REDUCTION OF GEOLOGIC DATA

Description of Samples

Portions of each of the samples are examined and described in the

laboratory. The terms used for the descriptions are summarized on figure 3.

The sample descriptions are presented in the left-hand columns of figures

The soil samples are described using the field techniques of the Soil

Conservation Service and those specified for the Unified Soil Classification

System. Dascriptions include soil texture, color, amount and size of coarse

grains, plasticity, dry and wet consistency, and moisture condition. Texture

refers to the relative proportions of clay, silt, and sand particles less than

2 mm in diameter. The dominant color of the soil and prominent mottles are

determined from the Munsell soil color charts.

Descriptions of rock samples include rock name, weathering condition,

color, grain size, hardness, and fracture spacing. Classifications of rock

hardness and fracture spacing are those used by Ellen and others (1972) in

describing hillside materials in San Mateo County, CA. The weathering

classification is modified from that used by Aetron-Blume-Atkinson (1965) in

describing Tertiary sedimentary rocks in the foothills of the Santa Cruz

Mountains, CA.

Geologic Log

Geologic logs are compiled for each hole using the field log descriptions

of the samples (figures 19-37). The field log is based on the reaction of the

drill rig, a continuous record of drill cuttings, preliminary on-site

inspection of samples, and inspection of nearby roadcuts and gullies.

Most information needed for describing relatively well-sorted soils and

such properties of rock as lithology, color, and hardness are readily obtained

from cuttings. Inspection of samples and nearby outcrops is also necessary to

determine the nature of poorly sorted materials and to determine fracture

spacing. Reaction of the drill rig is also useful in determining degree of

fracturing as the rate of penetration in rock is highest for very closely

fractured and crushed materials and drilling roughness generally is at a

maximum in closely to moderately fractured rock. In-situ consistency of soil

is determined largely from standard penetration measurements and rate of drill

penetration.

5

Density Measurements

Values for density are required to calculate elastic moduli from

measurements of seismic velocity. Densities were measured for the diamond

core samples and most of the penetration samples by weighing a small piece of

sample and obtaining its volume by the mercury displacement method. A

different procedure was used for very friable materials such as grus or

poorly-sorted materials which necessitated using a large sample. A section

was cut from the Shelby tube containing the sample, its height and diameter

measured and the sample extruded for weighing.

While the accuracy of the density measurements is generally sufficient for

calculation of elastic moduli, a number of the samples used to obtain

densities were not entirely representative of the material in-situ.

Penetration samples were somewhat disturbed and many had dried out before

measurements could be made. Densities of hard rock obtained using intact

fragments may be higher than in-situ densities by approximately

0.1 - 0.2 gm/cc, depending on the amount and openness of fractures.

REDUCTION OF SEISMIC DATA

Identification of Shear VJave Onset

To aid in the identification of the shear wave arrivals, the signals

recorded in the drill hole from impacting the timber in opposite directions

are superimposed and drafted on a common time base (figs. 38-56). The S-wave

group is easily identified when displayed in this manner, by a 180* phase

inversion. The onset of the S-wave is chosen as the start of the first

clearly inverted phase in the group. The interpretation proceeds from the

bottom record, to the top using phase correlation at each recording depth.

The onset of the S-wave arrival (arrows) and the first peak of the S-wave

arrival (dots) are identified for each depth and are indicated on figures

38-56 for each site.

6

It was not possible at every site to control orientation of the downhole

seismometer package because of high viscosity drilling mud left in the hole;

hence, the relative amounts of S-wave energy recorded on the two horizontal

seismometers vary with depth. The S-wave arrival is generally most easily

identified on the horizontal seismogram with the largest amplitudes.

Comparison of the signals recorded on the horizontal sensors with that

recorded on the vertical sensor shows that the S-wave energy generated by the

horizontal traction source is at least twice as large as the P-wave energy.

On many of the horizontal seismograms some P-wave energy prior to the

onset of the S-wave is apparent. Some P-wave energy is generated by the

horizontal traction source and some probably results from conversion of S to P

at seismic boundaries. In some cases the polarity of this P-wave energy is

reversed and careful consideration of the entire record section is reauired to

identify the S-arrival. In general, the onset of the S-wave is easier to

identify at sites underlain by the various types of soil than for sites

underlain by the more consolidated rock units.

Travel Times and Average Velocities

To determine the travel time for the S-wave onset identified from the

record sections (figures 38-56), the following times are measured with respect

to a 100 Hz time code signal recorded on the records:

1) t^ time of break in signal from impact switch

2) ^2 onset time of S-wave arrival on inline uphole geophone

3) t^ onset time of identified S-wave arrival on downhole sensors

The time considered to be the origin time for the S-wave recorded on the

downhole sensor is the onset time of the S-arrival on the uphole inline

sensor. To reduce the uncertainties in determining this origin time, an

average travel time from the source to the uphole geophone (t.) is

determined from the set of values, t2 - tj, measured at each depth.

The travel time for the first S-arrival is given by

ts tt3 - tt ) - tA .A corrected S-wave travel time (ts ), corresponding to the travel time

for a vertical ray path, is computed from t « t + tr where trc

corresponds to a timing correction (cosign of the angle of ray incidence) due

to the distance the plank is offset from the center of the hole (usually 2.0

m). Average velocities from the surface are determined by dividing the

corrected travel time by the corresponding depth. The travel time for the

first S-peak is determined similarly. The origin corrections (t« - ti),

the travel times of the first S-arrival and the first S-peak (t ), the

corrected travel times for the first S-arrival and the first S-peak (t ) 95c and the average corresponding velocities computed at each site are presented

in tables 1-19.

The travel times for the P-waves generated by a vertical impact on a steel

plate are determined in the same way as for the S-waves, except that the

origin time for the P-wave is given by the impact switch and no origin

correction is necessary. The travel times, the corrected travel times, and

the average velocities for the P-waves are also presented in tables 1-19.

Interval Velocities and Elastic Moduli

Calculation of interval velocities and elastic moduli requires

determination of depth intervals over which the velocity is approximately

constant within the uncertainty of the travel-time measurements. To determine

these depth intervals, the travel time data (tables 1-19) are plotted as a

function of depth (figs. 57-75) and the geologic logs (figs. 19-37) are

simplified and displayed graphically on the travel time curves (figs. 57-75).

Depth intervals for velocity determinations are selected on the basis of

distinct changes in slope of the travel time plots and evidence for lithologic

boundaries. For those geologic materials with S-velocities greater than

350 m/sec, the intervals are required to contain at least four travel time

8

measurements to avoid determining a velocity from a travel time differential

due in large part to measurement error.

Velocities are calculated for each of the selected intervals (tables

20-38) from the slope of the linear regression line which best fits the travel

time data in a least squares sense (Borcherdt and Healy, 1968, eqs. 3.1-3.5).

The equation of the linear-regression line which best fits, in a least-squares

sense, a sample of n pairs of time-depth coordinates (x^,ti ),....(xn ,tn ) is

t(x) = a + b (x - x)

where

1 n the intercept is INCPT = - 2 t. - bx , and

n the slope is b s 2 w.t.

n ?with w. = (x. - x)/D and D s 2 (x. -x)

11 k=l K

The desired velocity (VEL) is given by V - 1/b. Assuming the standard

statistical model (Borcherdt and Healy, 1968), the 68.3 confidence level,

uncertainty interval (UNC INT) for the velocity is estimated by

where S s 1

is the standard error of the regression coefficient

For these depth intervals with measurements f density (p), the shear

modulus (SHEAR MOD, M) and bulk modulus (BULK MOD, K) is calculated (tables

20-38) using

M = PVS 2

and K = PV 2 - 3

Poisson's ratio (a) is calculated (tables 20-38) using

2

ft)-2

2 -2

10

SUMMARY

This report summarizes seismic velocities measured in the near surface

geologic materials at 19 locations in the Los Angeles and Oxnard Ventura,

California, areas. S-wave and P-wave measurements were made at 2 1/2 m

intervals in drill holes to a depth of 30 m. Geologic logs were compiled by

continuously monitoring drill cuttings and by analysis of cored samples.

Density measurements were made from samples for the calculation of elastic

moduli.

Previous studies in the San Francisco Bay region (Gibbs et al., 1980) have

shown that average shear velocity can be correlated with ground motion

amplification recorded from nuclear explosions and with observed intensities

from the 1906 earthauake. A detailed study using shear velocity data from 59

locations (Fumal, 1978) has shown that certain physical properties of the near

surface geologic materials can be used to predict velocity. Measurements of

shear velocity at a number of strategic locations will permit a regional

classification of seismically distinct velocity units which may be useful for

seismic zonation.

ACKNOWLEDGEMENTS

The authors wish to thank John Tinsley and Al Rogers for their help with

site selection. John Tinsley also provided geologic data for many of the

locations. Chuck Halfen assisted with computer analysis of the seismic data

and drafting.

11

REFERENCES Aetron-Blume-Atkinson, 1965, Geologic site investigations for Stanford Linear

Accelerator Center: Report No. ABA-88. Borcherdt, R. D., and Healy, J. H., 1968, A method of estimating the

uncertainty of seismic velocities measured by refraction techniques:Bull. Seism. Soc., Am., 58, p. 1769-1790.

Ellen, S. D., Wentworth, C. M., Brabb, E. E., and Pampeyan, E. H., 1972,Description of geologic units, San Mateo County, California: AccompanyingU.S. Geol. Survey Miscellaneous Field Studies Map, MF-328

Fumal, T. E. 1978, Correlations between seismic wave velocities and physicalproperties of near-surface geologic materials in the southern SanFrancisco Bay region: U.S. Geological Survey Open-File Report 78-1067.

Gibbs, J. F., Fumal, T. E., and Borcherdt, R. D., 1981, In-situ measurementsof seismic velocities for seismic zonation in the San Francisco BayRegion: Bull. Seism. Soc. of Am., in press.

Gibbs, J. F., Fumal, T. E. and Roth, E. F., 1980, In-situ measurements ofseismic velocities at 27 locations in the los Angeles, California region:U.S. Geological Survey Open-File Report 80-378.

Kobayaski, N., 1959, A method of determining the underground structure bymeans of SH waves: Zisin, ser. 2, v. 12, p. 19-24.

Soil Survey Staff, 1951, Soil Survey Manual: U.S. Department of AgricultureHandbook 18.

Sowers, G. B., and Sowers, G. F., 1970, Introductory Soil Mechanics andFoundations: MacMillan, New York.

Terzaghi, K., and Peck, R. B., 1967, Soil Mechanics in Engineering Practice:John Wiley and Sons, New York.

U.S. Army Corps of Engineers, 1960, the unified soil classification system:Tech. Menorandum No. 3-357, Waterway Experiment Station, Vicksburg,Mississippi.

Warrick, R. E., 1974, Seismic investigation of a San Francisco Bay mud site:Bull. Seism. Soc. Am., v. 64, p. 375-385.

Warrick, R. E., Hoover, D. B., Jackson, W. H., Pakiser, L. C., and Roller,J. C., 1961, The specifications and testing of a seismic-refraction systemfor crustal studies: Geophysics, v. 26, p. 820-824.

12

FIGURES

Regional location map

Shear-wave apparatus

Description of geologic logs

SITE NO. NAME

28 CAMARILLO STATE HOSPITAL II

29 MARINA DEL RAY

30 WESTMINSTER HIGH SCHOOL

31 BURBANK FIRE STATION

Detailed location map Fig. 4 20Geologic log Fig. 19 35Record section - Fig. 38 55Travel-time plot Fig. 57 65 Tables:

"Travel-times and average velocities" 1 84"Interval velocities and elastic moduli" 20 103

Detailed location map Fig. 5 21Geologic log Fig. 20 36-37Record section Fig. 39 56Travel-time plot Fig. 58 66 Tables:

"Travel-times and average velocities" 2 85"Interval velocities and elastic moduli" 21 104

Detailed location map Fig. 6 22Geologic log Fig. 21 38Record section Fig. 40 55Travel-time plot Fig. 59 67 Tables:

"Travel-times and average velocities" 3 86"Interval velocities and elastic moduli" 22 105

Detailed location map Fig. 7 23Geologic log Fig. 22 39Record section Fig. 41 57Travel-time plot Fig. 60 68 Tables:

"Travel-times and average velocities" 4 87"Interval velocities and elastic moduli" 23 106

13

SITE NO. NAME PAGE

32 SHELL MAKER ISLAND

Detailed location map Fig. 8 24Geologic log Fig. 23 40Record section Fig. 42 57Travel-time plot Fig. 61 69 Tables:

"Travel-times and average velocities" 5 88"Interval velocities and elastic moduli" 24 107

33 CYPRESS COLLEGE

Detailed location map Fig. 9 25Geologic log Fig. 24 41Record section Fig. 43 58Travel-time plot Fig. 62 70 Tables:

"Travel-times and average velocities" 6 89"Interval velocities and elastic moduli" 25 108

34 VENTURA PISTOL RANGE

Detailed location map Fig. 10 26Geologic log Fig. 25 42Record section Fig. 44 58Travel-time plot Fig. 63 71 Tables:

"Travel-times and average velocities" 7 90"Interval velocities and elastic moduli" 26 109

35 SIERRA LINDA SCHOOL

Detailed location map Fig. 11 27Geologic log Fig. 26 43Record section Fig. 45 59Travel-time plot Fig. 64 72 Tables:

"Travel-times and average velocities" 8 91"Interval velocities and elastic moduli" 27 110

36 SAN MIGUEL SCHOOL

Detailed location map Fig. 11 27Geologic log Fig. 27 44Record section Fig. 46 59Travel-time plot Fig. 65 73 Tables:

"Travel-times and average velocities" 9 92"Interval velocities and elastic moduli" 28 111

14

SITE NO. NAME PAGE

37 ALTA VISTA PARK

Detailed location map Fig. 12 28Geologic log Fig. 28 45Record section Fig. 47 60Travel-time plot Fig. 66 74 Tables:

"Travel-times and average velocities" 10 93"Interval velocities and elastic moduli" 29 112

38 SEAL BEACH WEAPONS STATION

Detailed location map Fig. 13 29Geologic log Fig. 29 46Record section Fig. 48 60Travel-time plot Fig. 67 75 Tables:

"Travel-times and average velocities" 11 94"Interval velocities and elastic moduli" 30 113

39 RIDGELINE WATER TANK

Detailed location map Fig. 14 30Geologic log Fig. 30 47Record section Fig. 49 61Travel-time plot Fig. 68 76 Tables:

"Travel-times and average velocities" 12 95"Interval velocities and elastic moduli" 31 114

40 DIAMOND BAR '

Detailed location map Fig. 14 30Geologic log Fig. 31 48Record section Fig. 50 61Travel-time plot Fig. 69 77 Tables:

"Travel-times and average velocities" 13 96"Interval velocities and elastic moduli" 32 115

41 SKY TERRACE

Detailed location map Fig. 15 31Geologic log Fig. 32 49Record section Fig. 51 62Travel-time plot Fig. 70 78 Tables:

"Travel-times and average velocities" 14 97"Interval velocities and elastic moduli" 33 116

15

SITE NO. NAME

42 SYLMAR NURSERY

43 SYLMAR PARK

44 HILLTOP HOUSE

45 CEDAR HILL NURSERY

46 CAL STATE NORTHRIDGE

Detailed location map fig- 16 32Geologic log Fig- 33 50Record section Fig. 52 62Travel-time plot Fig. 71 79 Tables:

"Travel-times and average velocities" 15 98"Interval velocities and elastic moduli" 34 117

Detailed location map Fig. 16 32Geologic log Fig. 34 51Record section Fig. 53 63Travel-time plot Fig. 72 80 Tables:

"Travel-times and average velocities" 16 99"Interval velocities and elastic moduli" 35 118

Detailed location map Fig. 16 32Geologic log Fig. 35 52Record section Fig. 54 63Travel-time plot Fig. 73 81 Tables:

"Travel-times and average velocities" 17 100"Interval velocities and elastic moduli" 36 119

Detailed location map Fig. 17 33Geologic log Fig. 36 53Record section Fig. 55 64Travel-time plot Fig. 74 82 Tables:

"Travel-times and average velocities" 18 101"Interval velocities and elastic moduli" 37 120

Detailed location map Fig. 18 34Geologic log Fig. 37 54Record section Fig. 56 64Travel-time plot Fig. 75 83 Tables:

"Travel-times and average velocities" 19 102"Interval velocities and elastic moduli" 38 121

16

Figure 1

. Ge

nera

lized

map

of t

he L

os A

ngel

es r

egion

showing

the

appr

oxim

ate

loca

tion

s of

shear-wave

sites.

Detailed l

ocat

ions

are

sho

wn i

n fi

gure

s «-/8

.

a) SOURCE

UPHOLE THREE COMPONENT

GEOPHONE

STEEL PLATE FOR VERTICAL HAMMER

b)

2.5M

1

DOWNHOLE THREE COMPONENT GEOPHONE

Figure 2. Details of field apparatus. (a) banner and plank and (b) section shoving three-component dovnhole geophone.

18

DESCRIPTION

Text

ure:

the

rela

tive

pro

port

ions

of

clay,

silt,

and

sand below

2 am.

Prop

orti

ons

of l

arge

r pa

rtic

les

are

Indicated

by Modifiers o

f textural class

name

s.

Deter­

mina

tion

Is

Mde In

the f

ield

mainly

by f

eeli

ng t

he moi

st

soil

(S

oil

Survey S

taff.

1951

).

MNCIMt

Color:

Stan

dard

! Mu

nsel

l co

lor

name

s are given

for th

e dominant color o

f the moist

soil

and

for

prom

inen

t mottles.

Plas

tici

ty:

esti

mate

d from t

he s

tren

gth of a

ir d

ried

samp

le a

nd t

ough

ness

of

thre

ad fo

rmed

whe

n soil Is

rol

led

at th

e pl

asti

c li

mit

(Sow

ers

and

Sowe

rs.

1970).

plas

tici

ty

non

plas

tic

Slightly

medium

high

ly

dry

stre

ngth

».

lo

w slight

medium

high

fiel

d te

st

falls

apart

easi

ly

easily crushed

friable with dif

ficu

lty

cannot c

rush w

ith

fing

ers

DESCRIPTION

Rel

ativ

e d

ensi

ty o

f sa

nd a

nd c

onsi

sten

cy o

f cl

ay I

s co

r­

rela

ted

w

ith

pen

etra

tio

n r

esis

tan

ce:

(Ter

zag

hl

and

Pec

k,

1948

)

blo

ws

/ft.

0-4

4-10

10-3

030

-50

>50

rela

tive

den

sity

v.

loos

elo

ose

med

ium

dens

ev.

den

se

blo

ws/

ft.

_p

_^

2-4

4-8

8-15

15-3

0>3

0

cons

iste

ncy

v.

soft

soft

med

ium

sti

ffv.

sti

ffha

rd

a.

W.

etc

.:

Uni

fied

Soi

l C

lass

ific

atio

n G

roup

Sym

bol

(U.

S. A

rmy

Corp

s of

Eng

inee

rs,

1960

)

Rock

har

dnes

s:

resp

onse

to

hand

and

geo

logi

c ha

mm

er;

(Elle

n e

t al.,

1972

)

hard

h

amm

er b

ounc

es o

ff w

ith s

olid

sou

ndfir

m -

ham

mer

den

ts w

ith t

hud,

pic

k po

int

dent

s or

pene

trat

es s

ligh

tly

soft

- p

ick

poin

t pe

netr

ates

fria

ble

mat

eria

l ca

n be

cru

mbl

ed I

nto

Indi

vidu

al g

rain

s by

han

d.

Frac

ture

spa

cing

: (Ellen t

t al.. 1

972)

cm

In

1-5

5-30

30

-100

>1

00

1/2-

2 2-

12

12-3

6 >3

6

frac

ture

spa

cing

v. c

lose

clos

em

oder

ate

wid

ev.

wid

e

Weat

heri

ng:

(Actro

n-Bl

umt-

Atkl

nson

. 19

6S)

Fresh:

no v

isible s

igns

of

weat

heri

ngSlight:

no v

isib

le d

ecom

posi

tion

of minerals,

slig

htdiscoloration

Moderate:

slight d

ecom

posi

tion

of minerals a

nd d

is­

inte

grat

ion

of r

ock, deep

and

thor

ough

di

scol

orat

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Deco

mpos

ed:

exte

nsiv

e decomposition

of minerals

and

complete d

isin

tegr

atio

n of

rock

but

orig

inal

stru

cture

Is p

rese

rved

.

Figure 3

. De

fini

tion

s of t

erms

used

for

descriptions o

f sedimentary

depo

sits

and b

edro

ck m

ater

ials

.

ua c 3'' %

>.

ro

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SAMPLE DESCRIPTION

SANDY CLAY LOAM, dk. brown, poorly sorted, sand is mostly less than medium size some v. coarse sand and gravel to 20 mm, high plasticity, stiff.

GRAVELLY SAND, dk, brown, v. poorly sorted, 25% gravel to 30 mm, subrounded to sub- angular, dense.

SANDY LOAM, dk. brown, v. poorly sorted, 20% sub- angular gravel to 30 mm, medium plasticity, v. dense.

LOAM, brown, moist, medium plasticity, dense.

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/ GEOLOGIC Qa] . MAP UNIT: Holocene alluvium

fi DESCRIPTIONSE

° SANDY CLAY LOAM, dk. brown, poorly sorted, sand is mostly less than

medium size, some v. coarse sand and basalt gravel to 20 mm, high

- plasticity, stiff.

5

GRAVELLY SAND, dk. brown, v. poorly sorted, dense to v. dense. Contains

lenses of SANDY LOAM and SANDY GRAVEL.

10

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25

LOAM, brown, moist, medium plastic «/\d@n<;p.

COMMENTS: LOGGED BY: T. Fumal Figure 19 35

ALTITUDE: 5' LOCATION: Lot. 33°58'26" Long. n80 27'21"

DATE- 8/2/79 QUADRANGLE:VENICE, CA

SAMPLE DESCRIPTION

SILTY CLAY LOAM, v. dk. green­ ish grey, medium plasticity, soft, wet.

V. FINE SANDY LOAM, v. dk. grey, common shell fragments to 60 mm long. Slight plasticity, quick, wet.

V. FINE SANDY LOAM, black, some shell fragments, low plasticity, quick, wet, medium dense.

SAND, olive with common mottles of dk. yellowish brown, well- sorted v. fine to fine grained, quick, wet, dense.

SILT LOAM, v. dk. greenish grey, quick, moist, v. slight plasticity, some organic material.

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GEOLOGIC QalMAP UNIT: Holocene alluvium

^-. fl DESCRIPTIONol

" SAND, dk. grey, well-sorted, fine grained.

V. FINE SANDY LOAM, v. dk. grey, common shell fragments to 60 mm long. Slight plasticity, quick, wet,

-5 medium dense.

10

SAND, olive grey, well -sorted, v. -15 coarse grained, some gravel to 10 it

grading to fine to v. fine SAND olive mottled yellowish brown, quick, wet, den^e.

20

SILT LOAM, v. dk. greemsn grey 25 quick, moist, v. slight plasticity

some organic material.

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CONTINUED ON FOLLOWING FIGURE

COMMENTS: LOGGED BY: T. Fumal Figure 20 36

ALTITUDE:

DATE:

LOCATION: Lot. Long.

QUADRANGLE:

SAMPLE DESCRIPTION

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if DESCRIPTIONSi

so

. FINE SANDY LOAM, dk. grey.

-S5

LOAM, black, sand is v. fine grained, ' slightly plastic, quick, wet.

40

45

i

-50

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COMMENTS: LOGGED BY: T. Fumal Figure 20 continued 37

ALTITUDE- 26' LOCATION: MLiiiuut. *o Lflt 33045- 07"Long. 118°00'43"

DATF. ft/ft/7Q QUADRANGLE: DATE. 8/8/79 LQS ALAMITQS> CA

SAMPLE DESCRIPTION

SILTY CLAY LOAM, dk. greyish brown, medium plasticity, wet, micaceous, soft.

SILTY CLAY LOAM, olive grey, occasional small calcareous concretions, high plasticity wet.

SILT LOAM, dk. greenish grey, medium plasticity, slightly quick, wet, stiff.

SANDY LOAM, dk. greyish brown, sand up to v. coarse size, poorly sorted, medium plasticity, moist.

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GEOLOGIC Qac MAP UNIT: Holocene alluvium

if DESCRIPTIONol

o~ SAND, dk. greyish brown, well -sorted v. fine to fine grained, quick, moist, loose.SILTY CLAY LOAM, dk. greyish brown, medium plasticity, wet soft.

. K . - ** SAND, fine to medium grained.

SILTY CLAY LOAM and SILT LOAM, olive grey to dk. greenish grey, high to medium plasticity, wet, stiff.

10

15

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-20

fine gravel to 10 mm.

SANDY CLAY, brown

SAND, to v. coarse size.-25 SANDY LOAM, dk. greyish brown,

poorly sorted, sand mostly less thar medium size, some up to v. coarse, medium plasticity, moist.

_ SANDY CLAY, yellowish brown 30

COMMENTS: LOGGED BY: T. Fumal Figure 21 38

ALTITUDE: 610' LOCATION: Lot. 34°10'50" Long. n8°18'15"

DATE- 8/1/79 QUADRANGLE:BURBANK, CA

SAMPLE DESCRIPTION

FINE SANDY LOAM, dk, brown, occasional v. coarse sand and gravel, medium plas­ ticity, moist, loose.

SANDY LOAM, brown, poorly sorted, mostly finer than coarse sand, some granitic gravel, v. dense.

SANDY LOAM and LOAMY SAND, dk. brown, poorly sorted, slight plasticity, quick, moist, occasional fine gravel to 5 mm.

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SITE: BURBANK FIRE STATION

GEOLOGIC 2? . MAP UNIT: Pleistocene alluvium

^^f| DESCRIPTION*£o£

FINE SANDY LOAM, dk. brown, some v. coarse sand and fine gravel, mediuir plasticity, moist, loose.

5

grading coarser to SANDY LOAM, v. dense.

10

GRAVELLY SAND, granitic.

15

SANDY LOAM and LOAMY SAND, dk. brown, poorly sorted, slight

-20 plasticity, quick, moist, occasioi fine gravel to 5 mm.

-25

30

COMMENTS: " LOGGED BY: T - Fumal Figure 22 39

ALTITUDE: 10'

DATE: 8/10/79

LOCATION:Lot. 33°37 I 15" Long. 117°53'30"

QUADRANGLE:NEWPORT BEACH, CA

HOLE No. 32SITE: SHELLMAKER ISLAND

GEOLOGIC Qac/TmMAP UNIT: Holocene alluvium/Monterey

SAMPLE DESCRIPTION I DESCRIPTION

V. FINE SANDY LOAM, dk. bluish grey mottled black, common organic matter, medium plasticity, slightly quick, wet, loose.

SHELLS with v. fine sand matrix, 80% small shell fragments, grey, wet, loose.

SAND, greyish brown, well-sorted, fine grained, common shells, dry.T. FINE SANDY LOAM, dk. bluish grey mottled black, common organic matter, medium plasticity, slightly quick, wet, loose.

SHELLS with v. fine sand matrix, grey, wet, loose.

SILTY CLAY, mottled dk. grey and pale olive, high plasticity, wet, some sand sized calcareous con­ cretions. V. stiff.

SILTY CLAY, mottled dk. grey and pale olive, high plas­ ticity, wet, 10% sand sized calcareous concretions.

'.97

SHALE, black, firm to soft, close to v. close fracture spacing, occasional v. fine sand laminations inclined 30°.

.MS- Fis? -25

SHALE, grey to black, firm to soft, close to v. close fracture spacing, occasional v. fine sand laminations inclined 30°.

30

COMMENTS:Figure 23 40

LOGGED BY: T. Fumal

ALTITUDE- 53' LOCATION: Muiiiuut. Lgt 33049 i 4r

Long. n80 01'20" DATE- 8/7/79 QUADRANGLE:UHlt. / //* LQS ALAMITOSj CA

SAMPLE DESCRIPTION

SILT LOAM, olive grey, medium plasticity, quick, wet, soft.

LOAM, v. dk. grey, sand is v. fine grained slightly plastic, wet, contains lenses of well -sorted fine sand.

SAND, dk. greyish brown, well- sorted fine to medium grained, angular to sub- rounded, quick, wet, v. dense.

t

V. FINE SANDY LOAM

SAND, v. dk. greenish grey, poorly sorted, mostly medium to coarse sand, some rounded gravel to 25 mm. , v. quick, wet.

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HOLE No. 33 SITE: CYPRESS COLLEGE

GEOLOGIC Qac MAP UNIT: Holocene alluvium

fl DESCRIPTIONo!

SAND, dk. greyish brown, v. well- sorted, fine grained, loose , drv.SILTY CLAY LOAM to LOAM, olive grey to v. dk. grey, medium to slight plasticity, wet, soft.

5

»

SAND, dk. greyish brown, well- -IO sorted fi ne to medium grained,

angular to subrounded, quick, wet, v. dense.

SILTY CLAY, olive.

SAND, v. dk. greenish grey, poorly sorted, mostly medium to v. coarse

.15 sand, some rounded gravel to 25 mm. Contains thin lenses of SANDY LOAM.

-20

-25

50

COMMENTS: LOGGED BY: T. Fumal Figure 24 41

ALTITUDE: 500 ' LOCATION : o

Long. 119° DATE: 7/18/79 QUADRANGL

SAMPLE DESCRIPTION

CLAY LOAM, v. dk. greyish brown, sand is fine grained,high plasticity, moist, v.stiff.

CLAY LOAM, dk. greyish brown,high plasticity, moist, v.stiff.

LOAMY FINE SAND, yellowishbrown, medium dense.

GRAVELLY SANDY LOAM, dk.yellowish brown, poorly sorted, 30% is greater than 4 mm, most is finer than medium sand, v. dense.

SILTY CLAY LOAM, yellowishbrown, high plasticity,moist, hard.

COMMENTS:Figure 25

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HOLE No. 34

SITE: VENTURA PISTOL RANGE

GEOLOGIC QsMAP UNIT: San Pedro Formation

|| DESCRIPTION

0 CLAY LOAM, dk. greyish brown, v. stiff, and LOAMY FINE SAND, yellow­ ish brown, medium dense to v. dense. Contains lenses of angular reddish brown v. coarse sand and finegravel .

-5

10

-

15

GRAVELLY SANDY LOAM and GRAVELLY SAND, dk. yellowish brown, poorly

-20 sorted, v. dense. Contains boulders to 60 cm.

-25

SILTY CLAY LOAM, yellowish brown high plasticity, moist, hard.

30

1 LOGGED BY: T. Fumal

ALTITUDE: 72'

DATE: 7/16/79

LOCATION : Lot. 34°13'33" Long. 119 0 1T14"

QUADRANGLE:OXNARD, CA

SAMPLE DESCRIPTION

LOAM, greyish brown, with common mottles of yellowish brown, sand is v. fine grained, high plasticity, moist, stiff.

GRAVELLY SAND, It. olive brown, poorly sorted, 30% flat shale fragments to 20 mm, moist, quick, v. dense.

COMMENTS:Figure 26

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GEOLOGIC Qd MAP UNIT: Deltaic deposits

»>.

f| DESCRIPTIONSi

0LOAM, greyish brown to yellowish brown, sand is v. fine grained, high plasticity, moist, stiff.

-5

GRAVELLY SAND, It. olive brown, poorly sorted, up to 50% flat shale fragments to 50 mm., v. dense. Contains lenses of SILTY CLAY, greyish brown.

10

15

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-25 SAND, mostly medium grained with lenses of silty clay.

-mo

LOGGED BY: T. Fumal43

ALTITUDE- 31 ' LOCATION:ALllTUUt. 01 Lof 34 o 10 . 37 "

Long. n9°n i 05" DATE: 7/17/79 QUADRANGLE:

OXNARD, CA

SAMPLE DESCRIPTION

SAND, greyish brown, mostly medium to v. coarse sand, v. dense.

NO RECOVERY

V. FINE SANDY LOAM, dk. green­ ish grey, slight plasticity, quick, wet, dense.

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GEOLOGIC Qd MAP UNIT: Deltaic deposits

if DESCRIPTION Si

-0FINE SANDY LOAM, v. dk. greyish brown, medium plasticity, moist.

SAND, greyish brown, mostly medium to v. coarse sand, v. dense.

5

SILTY CLAY, dk. grey.

10SANDY GRAVEI

SAND, well -sorted, medium to coarse grained.

15 grading finer to fine to medium grained SAND.

some gravel to 25 mm.

-20

25

grading finer to V. FINE SANDY LOAM.

50

COMMENTS: " LOGGED BY- T - Fumal Figure 27 44

ALTITUDE 50' LOCATION: ALTITUDt. L 33049.45"Long. H8°22'43"

DATE: 8/6/79 QUADRANGLE:REDONDO BEACH, CA

SAMPLE DESCRIPTION

NO RECOVERY

SAND, yellowish brown, well- sorted, coarse grained, rounded to subrounded, v. dense.

SAND, yellowish brown with mottles of strong brown, well -sorted, fine to v. fine grained, subrounded to sub- angular, moist.

1

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HOLE No. 37

SITE: ALTA VISTA PARK

GEOLOGIC Qso MAP UNIT: Older dune sand

fl DESCRIPTIONSi

0 SILTY CLAY, white.SAND, greyish brown, well -sorted, fine grained, medium dense.

.5 SAND, yellowish brown, well -sorted, mostly fine to medium grained, v. dense.

10

grading to coarse SAND.

15

grading to v. fine to fine SAND.

20

25

SO

COMMENTS: Finer grained and better sorted than LOGGED BY: T. Fumalt^L HjrporJ o n s i t e .

~ ~ "* 45

ALTITUDE- 1 0 ' LOCATION : MUIII Lot. 33°44'44"

Long. n8°05'06"DATE- 8/9/79 QUADRANGLE: UMIC - ' ' SEAL BEACH, CA

SAMPLE DESCRIPTION

CLAY LOAM, dk. greenish grey mottled strong brown, sand is mostly v. fine grained, high plasticity, wet, medium stiff

LOAMY V. FINE SAND, olive brown mottled yellowish brown, slightly plastic, moderately quick, moist.

SILTY CLAY LOAM, dk. grey, slightly plastic, wet, indistinct dk. brown organic laminations inclined 20-30°.

SILTY CLAY LOAM, dk. greenish grey, medium plasticity, wet. Contains v. thin lenses of well -sorted v. fine sand - ripples and burrows.

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HOLE No. 38 SITE: SEAL BEACH WEAPONS STATION

GEOLOGIC Qac Holocene alluviumMAf* UNIT: Qtm Marine terrace deposi

fl DESCRIPTIONol

° SAND, well -sorted, medium grained.SILTY CLAY LOAM and CLAY LOAM, dk. greenish grey mottled strong brown, high plasticity, medium stiff, wet.

-5 SAND, yellowish brown to strong brown, well -sorted, medium to coarse grained.

grading finer to v. fine SAND, olive brown.

10

SAND, grey fine grained.

15. _ _grading coarser to coarse SAND.

.20 Interbedded SILTY CLAY LOAM, dk. greenish grey, and SAND, dk. grey, fine grained.

-25

30

COMMENTS: LOGGED BY: T. Fumal Figure 29 46

ALTITUDE- 1200' LOCATION: MLiuuut. Lof 33059. 12 ..Long. n7°48'57"

DATE- 8/15/79 QUADRANGLE:UM.t. I^U? YQRBA LINDA> ^

SAMPLE DESCRIPTION

GRAVELLY CLAY LOAM, mottled v. dk. grey, dk. olive grey, dk. yellowish brown.

SHALE, olive, with laminations of strong brown fine sand­ stone, slakes to gravelly clay loam, moderately to deeply weathered, firm to soft, close to v. close fracture, moist.

SHALE, dk. greyish brown, strong brown fracture sur­ faces, moderately to deeply weathered, firm to soft, close to v. close fracture.

SANDSTONE, olive brown, some dk. grey shale, moderately to deeply weathered, firm to soft and friable, v. fine grained, closely to moderately fractured.

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HOLE No. 39 SITE: RIDGELINE WATER TANKGEOLOGIC TpsMAP UNIT: Puente Fm - Soquel member

fl DESCRIPTIONol

"° SHALE, olive to dk. greyish brown with some laminations of strong brown fine sandstone, slakes to

" GRAVELLY CLAY LOAM, moderately to deeply weathered firm to soft, close to v. close fracture spacing.

5

-10

15

»

-20

SANDSTONE, olive brown, some dk. grey shale, moderately to deeply weathered, firm to soft and friable, closely to moderately fractured.

25

-*n

COMMENTS: LOGGED BY: T. Fumal Figure 30 47

ALTITUDE- 1030 ' LOCATION:^^*"** » ^**^fc»« 1 * OOOCOI CCH

LOT* J*3 DO DDLong. 11 7*49 '07"

DATE- 8/14/79 QUADRANGLE: UMIt - ' ' YORBA LINDA, CA

SAMPLE DESCRIPTION

SANDY CLAY LOAM, yellowish brown mottled v. dk. greyish brown, sand is mostly finer than medium sand, medium plasticity, stiff.

SHALE, dk. olive brown, moderately to deeply weathered, soft, closely to v. closely fractured.

SANDSTONE, It. olive brown, moderately to deeply weathered, soft to firm, moderately fractured.

SHALE, black, with occasional laminations fine to medium grained SANDSTONE, fresh, firm to hard, v. closely to closely fractured.

1

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HOLE No. 40 SITE: DIAMOND BAR

GEOLOGIC TpsMAP UNIT: Puente Fm - Soquel membe

ti DESCRIPTIONo!

.n SANDY CLAY LOAM, yellowish brown mottled v. dk. greyish brown, medi plasticity, stiff.

-5SHALE, dk. olive brown, moderate 1: to deeply weathered, soft, close!, to v. closely fractured. Contain beds of SANDSTONE, It. olive brow soft to firm, moderately fracture

10

SHALE, black, with occasional lan ations of fine to medium grained SANDSTONE, fresh, firm to hard, \ closely to closely fractured.

15

-20

25

*

30

COMMENTS: u* \ LOGGED BY: T. Fume

ALTITUDE- 1450 ' LOCATION: MLilTUUt. Lof 34 o 17 , 29"Long. 118°24'15"

DATE- 7/31/79 QUADRANGLE: UAit. //Ji//y SAN FERNANDO> CA

SAMPLE DESCRIPTION

SANDSTONE, yellowish brown, v. coarse grained, some gravel to 20 mm, moderately to deeply weathered.

Interbedded CONGLOMERATE, dk. yellowish brown, 80% v. coarse sand to fine gravel, some to 60 mm subrounded to subangular, SILTSTONE, dk. brown with strong brown laminations and SANDSTONE It. brownish grey, fine grained, moderately weatherec firm to soft, moderate and wider fracture spacing, beds inclined 45°.

ft

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HOLE No. 41

SITE: SKY TERRACE

GEOLOGIC Tm MAP UNIT: Modelo Fm.

fl DESCRIPTIONo!

0 V . "T~ JJ" J-VUUIJU AUPMIW J IIInterbedded CONGLOMERATE and V. COARSE SANDSTONE, wide variety of rock types: sandstone, volcanic and granitic, moderately to deeply weathered firm to soft, moderate and wider fracture spacing. Contains some beds of SILTSTONE.

5

10

15

CONGLOMERATE, yellowish brown to greyish brown, mostly v. coarse sand and fine gravel, angular to subangular, firm to hard, moderate and wider fracture spacing,

20 moderately weathered to fresh. Contains some beds of FINE SANDSTONE.

-25

»

-30

COMMENTS: Stopped drilling at 27.8 m because^ LOGGED BY: T - Fumal drilling rate was very slow in hard formation.

Finiira ?? 40 -

ALTITUDE: 1400'

DATE: 7/26/79

LOCATION: Lot. 34°19 I 05" Long. 118°25 I 52"

QUADRANGLE:SAN FERNANDO, CA

SAMPLE DESCRIPTION

SANDY LOAM, dk. brown, sand is mostly medium grained, some granitic gravel to 40 mm is soft and friable, slightly plastic, dry, medium dense.

SANDY LOAM, dk. brown, sand is mostly medium grained, some granitic gravel to 15 mm, dense.

COMMENTS:Figure 33

fi

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.

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HOLE No. 42 SITE: SYLMAR NURSERY

GEOLOGIC Qal MAP UNIT: Holocene alluvium

f| DESCRIPTION

0SANDY LOAM, dk. brown, sand is mostly medium grained, some granitic gravel to 40 mm, slightly plastic, medium dense to dense. Contains lenses of well -sorted coarse to v. coarse SAND.

-5

-10

SAND, brown, mostly coarse to v. coarse grained, rounded to sub- angular, v. dense. Contains lenses of GRAVELLY SAND.

15

-20

-Z5

30

LOGGED BY: T - Fumal 50

ALTITUDE: 1260 ' LOCATION : o Long. n80 26'49"

DATE: 7/29/79 QUADRANGLE:

SAMPLE DESCRIPTION

SANDY LOAM, v. dk. greyish brown, micaceous, slightly plastic, dry, medium dense.

SANDY LOAM, dk. brown, sand is mostly finer than fine sand, some gravel to 4 mm, micaceous, slightly plastic, quick, moist, v. dense.

NO RECOVERY

I

2-4?

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COMMENTS:Figure 34 51

HOLE No. 43 SITE: SYLMAR PARK

GEOLOGIC Qal MAP UNIT: Holocene alluvium

|| DESCRIPTION

0SANDY LOAM, v. dk. greyish brown, micaceous, slightly plastic, dry, medium dense.

-5

SAND, brown, well -sorted, medium to coarse grained, some gravel to 15 mm, angular to subrounded.

SANDY LOAM, dk. brown, sand is mostly finer than fine sand, some

10 gravel to 4 mm, moist, v. dense.

SAND, well -sorted coarse to v. coarse, some granitic gravel

GRAVELLY SAND. -15

COBBLE GRAVEL, granitic.

SANDY LOAM, brown, v. dense.

25

30

LOGGED BY: T - Fumal

ALTITUDE: 1620 1

DATE: 7/30/79

LOCATION:Lot. 34°i9 l 49" Long. >n80 27 l 05 11

QUADRANGLE:SAN FERNANDO, CA

SAMPLE DESCRIPTION

NO RECOVERY

SANDSTONE, yellowish brown, medium to coarse grained, substantial gravel some to 30 mm, soft, deeply weathered.

SANDSTONE, greyish brown to strong brown, poorly sorted, mostly medium to v. coarse grained, some fine gravel, soft.

COMMENTS:C-»nnv»o 35

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its

Z-17

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19,/£

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1 '.V.V '.V.V . . .v»

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HOLE No. 44

SITE: HILLTOP HOUSE

GEOLOGIC Te Elsmere member of MAP UNIT: the Repetto Fm.

fi DESCRIPTIONSi

.ft __,_ ._..... ,_ . ,_ _,,._ ..,, v SAND, strong brown, mostly fine to

medium grained, some gravel to 15 mm loose, dry, deeply weathered SANDSTONE.

5

SANDSTONE, yellowish brown to strong brown, medium to v. coarse grained, substantial gravel to 30 mm, soft to firm, deeply to moderately weathered

i 10

^15

-20

SANDSTONE, It. grey, medium to coarse grained, slightly weathered to fresh, firm to soft, moderate e

-25 w^ der fracture spacing.

BO

LOGGED BY: T. Fumal

ALTITUDE: 860'

DATE: 7/23/79

Long. 118°33'07"QUADRANGLE:

CANOGA PARK, CA

HOLE No. 45

SITE: CEDAR HILLS NURSERY

GEOLOGIC TmMAP UNIT: Modelo Fm

SAMPLE DESCRIPTIONo

DESCRIPTION

SILTY CLAY LOAM, olive, v. stiff, slight plasticity, deeply weathered shale (shale parting visible).

SILTY CLAY LOAM, yellowish brown to olive, v. stiff, slight plasticity. Deeply to moderately weathered SHALE.

SHALE, black, soft to firm, v. close horizontal parting, close to v. close fracture spacing, fresh.

SHALE, black, firm to soft, v. close horizontal parting, close to v. close fracture spacing, fresh.

10

-15

-20

25

COMMENTS:Figure 36

Rapid fluid loss at 24.5 m.53

LOGGED BY: T. Fumal

ALTITUDE- 870 ' LOCATION: ALTITUUt. Lot. 34°14'22"

Long. n8°3T21" DATE: 7/24/79 W*S**ff}* : CA

SAMPLE DESCRIPTION

GRAVELLY SAND, brown, v. poorly sorted, 30% gravel to 30 mm subangular, v. dense.

FINE SANDY LOAM, yellowish brown, and SAND, well -sorted, fine to medium grained, rounded to subangular moist, dense.

LOAM, brown, sand is v. fine grained, occasional gravel to 30 mm, medium plasticity, moist, v. dense.

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'£ ^ a. »£ 5o

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'.*"'.'."'.'.' '."'.'.'*.'.'

'.*"'.'.'*.'.'

HOLE No. 46 SITE: CAL STATE NORTHRIDGE

GEOLOGIC QaJ MAP UNIT: Holocene alluvium

|| DESCRIPTION

0 GRAVELLY SAND, brown, v. poorlysorted, v. dense. Contains lenses of SANDY LOAM, yellowish brown.

FINE SANDY LOAM and LOAM, yellowish - brown to brown, occasional gravel to

"° 30 mm. Contains lenses of SAND, well -sorted, fine to medium grained, dense to v. dense.

10

15

-20

25

30

COMMENTS: LOGGED BY: T - Fumal

Fiqure 37 54

CAMARILLO STATE HOSPITAL SITE 28 WESTMINSTER HIGH SCHOOL SITE 30

VERTICAL

O.l»tc O.Utc

50

12.5

17.5

20.0

25.0

275

O.IMC.

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Figure 38 Finure 40

55

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4.

T

o

SHELLMAKER ISLAND SITE 32

BURBANK FIRE STATION SITE 31

0.1

22.6

Figure 41Finure 42

57

CYPRESS COLLEGE SITE 33 VENTURA PISTOL RANGE SITE 34

5.0

7.5

15.0

17.S

20.0

23.8

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VERTICAL

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Figure 43

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17.5

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27.5

29.2

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0.1 sec.

Figure 44

58

SIERRA LINDA SCHOOL SITE 35 SAN MIGUEL SCHOOL SITE 36

~ 12.5

15.0

' ', ' T,

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20.0

22.5

25.0

27^

26.6

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0 i M H 11111 i'i M| til l|

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Figure 45

VERTICAL

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VERTICAL

0.1 MC.

^:,v;;^v

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20-0

30.0

v-V '*:,

Figure 46

59

ALTA VISTA PARK SITE 37 SEAL BEACH WEAPONS SITE 38

5.0

20.0

29.9

VERTICAL

0.1 »ecllllldlll

Figure 47

H VERTICAL 2

2.5

5.0

22.5

25.0

26.7

Finure 48

0 1 »ec.

60

DEPTH

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O

r-

DEPTH

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SKY TERRACE

0.1 ««c.

2.5

5.0 U- /v^v

15.0

17.5

20.0

22.5

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SITE 41

VERTICAL

SYLMAR NURSERY SITE 42

0.1

.' ' ' ,.'.%VV Uf>:^t .'"' .* ,

ijfv^

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Figure 51Figure 52

62

SYLMAR PARKSITE 43

VERTICAL

0.1 »ec.

HILLTOP HOUSE

Figure 53Figure 54

63

CEDAR HILL NURSERY SITE 45 CAL STATE NORTHRIDQE SITE 46

0.1 **c.

2.5

6.0

7.6

10.0

~12.6

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17.6

20.0

22.5

26.0

27.5

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VERTICAL

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0 | MH|lHl[ |Mlt|lltl|

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22.6

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Figure 55 Figure 56

64

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70

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SARD, dk. grey, grained.

V. FINE SANDY LOAM, grey

medium dense

10

SAND, olive grey .» coarse grained

fine to v. fine olive/yellowish brown, dense

20

SILT LOAM, v. flK 25 greemsn grey

30-

FINE SANDY LOAM dk. grey

LOAM, black, sa

40

Figure 58 66

10

s\rc NO. 30

ZOM

10-

/SO

30i-

SAND, greyish orown

looseSILTY CLAY LOP

greyish brown soft

" SAND, fine to medium

10

SILTY CLAY LO/ SILT LOAM, greenish grey

5tiff

15

SAND, grey,

20

fine gravel

SANDY CLAY brown

SAND.25 SANDY LOAM

greyish browr

30SANDY CLAY

Figure 59 67

F\RE STATION SlTZNO.3!

10

IhQ.bJ £

/o

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.rst S

Velocity CM/S)

10

FINE SANDY LOAM

grading coarser to SANDY LOAM

GRAVELLY SAND 15

SANDY LOAM and LOAMY SAND

25

30

Figure 60 68

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70 //o

1-5

SAND

SILTY CLAY LOAM to LOAM

SAND

SILTY CLAY

SAND

£ #1-30

Figure 62 70

VENTURA PISTOL

CLAY LOAM and LOAMY FINE SAND

GRAVELLY SANDY LOAM and GRAVELLY SAND

.SILTY CLAY LOAM

30

figure 63 71

k

zo

5/ERRA LINDA SCHOOL

TIME (M.S£X)fO__________TC to

51T£ NO. .

0-

OFirit PArrival

O Fir«tS Arrival

$

,K .».q6

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LOAM

GRAVELLY SAND

10

-15

-20

25 SAND

30.

Figure 64 72

10 T~

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SAN MIG-UFL SCHOOL S/Tif A/0.36

Tine

QF,r,t $ Arr.vol

AF«r«t$ Pe«k

-5

SANDmedium to coarse

-15 fine to medium to

FINE SANDY LOAM

SAND

SILTY CLAY

SANDY GRAVEL

some gravel

20

25

V. FINE SANDY LOAM

30

Figure 65 73

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5£AL B&ACH WEAPONS STAT/ON

(M5EC)

SITE NO. 38

//O

S P«alc

O.a

SAND

SILTY CLAY LOAM and CLAY LOAM strong brown

-5 SAND, yellowish brown to strong

medium to coarse

. v. fine SAND olive brown

10

SAND, grey grained

"15 _ _ _ _grading coarser to coarse

. 20 CLAY LOAM and SAND grey, fine grained. dk. grey

30

Figure 67 75

RIP&ELINE WATER TAMK

SHALE deeply weathered firm to soft

SANDSTONE . moderately to deeply weatheredfirm tosoft and friable

-. _.. ~ CO 76

DIAMOND BAR

/O

v^X

a, LJ

OFir«t F A

60*1 Vel»c.t Y CM/*)

SANDY CLAY LOAM

SHALEmoderately to deeplyweathered f soft

10

tig. SHALE, blackfresh, firm to hard

15

-20

25

38SE 30

Figure 70 77

SKY T£7?fiAC£ 1HENO.HI

TIMEto

a. u

D t.r.* 5 *<W

Interbedded CONGLOMERATE and V COARSE SANDSTONE moderately to deeply weatheredflrm to soft

-15

CONGLOMERATE firm to hard

25

Figure 7078

SYLMAR NURSERY SHE NO.^Z

SANDY LOAM. Contains lenses of coarse to v. coarse SAND

SAND, coarse to v. coarse Contains lenses of GRAVELLY SAND.

30"

Figure 71 79

SVLMAK PARK

/o

&

/o *

Efc.

SANDY LOAM

SAND, medium to coarse

SANDY LOAM

SAND,coarse to v coarse

GRAVELLY SAND.

COBBLE GRAVEL

SANDY LOAM

Figure 72 80

HILLTOP HOUSE

10 3e

** P Arri

irjT 5 A-r.

Velocity

a Uj

»'

I*-* -

V.V, .'.V.V

iviv.m ..

. . .'. 4-

m

SAND, fine to medium grained

SANDSTONE, soft to firm, deeply to moderately weathered

10

15

20

SANDSTONE, firm to soft, slightly weathered, to fresh

25

ISO

Figure 73

CEDAR HILLS NURSERY SITE NO. 15

TtME (ASEC)

DK,r,1 S

.rjt 5 Peak

VeUt.+y

=======-20

=3E=E= 25

SILTY CLAY LOAM Deeply to moderatelyweathered SHALE SHALE.

SHALE,soft to firm, close to v.

close fracture fresh

SO

Figure 74 82

Ut

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o >

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li

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« 8

8 S

^i^;S{ii!:!^-ii!\:v::|J:ii::!'f!vi^V\*:S^sV:^

oc o

CO

00

LO

O)

Table 1

TBAYEL-TIBES ARC AVERAGE VELOCITIES

SITE NO. 28 CAHABILLO STATE HOSP II DATE LOGGED 11-29-79 PLANK DIST= 2.0 PLATE DIST= 2.0 AVf CEIG1N COfcfi^ 0.005

AVE V£L S HAVE

DEPTH

(«)

2.55.07.5

10.012.515.017.520.022.525.027.529.2

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.525.027.529.2

OBIGINCOBR(S)

0.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0060.004

FIRST SPEAK

(S)

0.0250.0360.0430.0500.0580.0650.0700.0790.0850.0920.0960.099

FlfcST SAfcBIVAL

(SJ

0.0170.0270.0350.0420.0500.0580.0630.0710.0770.0840.0880.091

C06B P TIfl£S PEAK

(S) (S)

0.020 0.0110.033 0.0150.042 0.0 1t>0.049 0.0150.057 0.0190.064 0.02*:0.07C 0.0240.079 0.0270.085 0.0400.092 0.0470.096 0.0490.099 0.051

CCfifiS HUE

(S)

0.0130.0250.0340.0410.0490.0570.0630.0710.0770.0840.0680.091

COfifiP 1IHE

(S)

O.C090.0140.0140.0160.019O.C220.0240.027C.0400.0470.0490.051

188199221242253260279283293293313321

AVE VEL F HAVE

291359517637666687733744564533562573

84

Table 2

TRATEL-TIflES AMD AVERAGE VELOCITIES

SITE BO. 29 PLANK DIST*

HARINA DEL BEX2.0 PLATE D1ST= 2.0

DATE LOGGED 11-26-79 AYE ORIGIN C0h&= 0.005

DEPTH

t«)

2.55.07.5

10.012.515.017.520.022.525.027.530.032.535.037.539.7

ORIGINCORT?(S)

0.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.0050.005

FIfeSI SA&falVAL

(S)

0.0200.0360.0520.0660.0770.0880.0960.1050. HJ0.1220. 1290.1370. 1440.1510.1580.165

cofcbS 1IBE

(S)

0.0160.0350.0500.0650.0760.0870.0950.1040.11J0.1220.1290.1370. 1440.1510. 1580.165

AVE VEL5 HAVE

(»/S)

1601411491541641711831911992052132192262J2237240

DEPTH

CH)

2.55.07.510.012.515.017.520.022.525.027.530.032.535.037.539.7

PIRST SPEAK(S)

0.0280.0450.0580.0720.0830.0940.1020.1110. 1190.1280.1360.1440.1510.1580.1660.173

CORRS PEAK

(S)

0.0220.0420.0560.0710.0820.0930. 1010.1100.1190.1280. 1360.1440.1510.1580. 1660.173

P TIfl£

<S)

U.01J0.0 1J0.0140.0150.0170.01d0.0190.0214). 0220.02J0.0250.0260.0260.030O.OJ10.032

CCRflP TIRE

(S)

O.C100.0120.0140.0150.017C.C180.0190.0210.0220.0230.0250.0260.0280.0300.031C.CJ2

AVE VELP WAVECM/S)

24641455467974484092795710301090110011601160117012101240

85

Table 3

TRAVPL-TIflES AND AVIBAGE VELOCITIES

SITE NO. 30 WESTMINSTEB CATE LOGGED 11-27PUNK DIST= 2.0 PLATE DIST= 2.0 AVE ORIGIN C0fifi= 0.0

AVE VEL S HAVE

(tt/S)

107

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.525.027.529.5

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.525.027.529.5

ORIGINCOBR(S)

0. 0060.0060.0060.0060.0060.0050.0070.0060.0060.0060.0060.005

FIRST SPEAK

IS)

0.0230.0370.0490.0610.0720.0850.0950.1040.1150.1220.1310.135

FIflSI SA&BIVAL

(S)

0.0170.0300.0430.0550.0660. 0790.0890.0960. 1070. 1140.1230. 129

CORR P II HES PEAK

(S) (S)

0.018 0.0130.034 0.0150.047 0.0190.060 0.0200.071 0.0220.084 0.0240.094 0.0250.104 0.0270.115 0.02d0.122 0.0300.131 0.0310.135 0.035

CCRBS 1IHE

(S)

0.0130.0280.0420.0540.0650.078O.C690.0960.1070. 1140.1230.129

CCKBP TIHE

(S)

0.010O.Q14O.C180.0200.0220.0240.0250.0270.0280.030C.C310.035

180185191191197204210219224229

AVE VEL P HAVE

(H/S)

246359408509575630704744806835889844

86

Table 4

TBAVEL-TIHES AND AVERAGE VELOCITIES

SITE WO. 31 PLAWK DIST«

BORBANK FI*E STATION 2.0 PLATE DIST- 2. 0

DEPTH

cm2.55.07.5

10.012.515.017.520.022.524.0

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.524.0

OPIGIHCORF(S)

0.0050.0050.0050.0050.0050.0050.0050.0050.005O.OOU

FIRST SPEAK

(S)

0.0160.0190.0260.0320.0380.0430.0490.0540.0600.063

FlfiST SABBIVAL

(S)

0.0090.0140.0210.0260.032O.OJ70.0430.0460.0540.057

CORK P HflES PEAK

(S) (S)

0.013 O.OC90.016 0.0120.025 0.0160.031 0.0200.038 0.0230.043 0.0260.049 0.0290.054 0.0310.060 0.0330.063 0.035

CCFP5 1IHE

!S)

0.0070.0130.0200.0260.0320.0370.0430.0460.0540.057

CCBBP HflE

(S)

0.0070.0110.0150.020C.0230.0260.0290.031O.C330.035

EAIE LOGGED 11-16-79 AVE CBIGIN COKfl= 0.005

AVE VEL S HAVE

(H/S)

351361367390394407406417417421

AVE VEL P HAVE

(B/S)

355448 485 509 J550 562 607 648 684 668

87

Table 5

TRAVEL-TINES AND AVEBAGE VELOCITIES

SITE NO. 32 SHELLHAKER ISLANL DATE LOGGED 11-20-75 PLANK DIST= 2.0 PLATE DIST= 2.0 AVI CBIGIN COBB= 0.004

DEPTH

(H)

2.55.07.510.012.515.017.520.022.525.027.529.0

OHIGINCORK(S)

0.0040.0040.0040.0040.0040.0040.0040.0040.0040.0040.0040.004

ricsi sAfi&IVAL

(S)

0.0140.0260.0370.0480.0610.0740.0830. 0960.1000. 1050.1090. 112

CCBBS 1IKE

(S)

0.0110.0240.0360.047O.C600.0730.0820.0960.1CO0.1050.1090.112

AVE VELS HAVE(M/S)

226207209212207204212209225236252259

DEPTH

{«)

2.55.07.510.012.515.017.520.022.525.027.529.0

FIRST SPEAK<S)

0.0220.0320.0440.0540.0670.0800.0890. 1010.1080.1130.1180.120

CORRS PEAK

(S)

0.0170.0300.0430.0530.0660.0790.0880.1000.1080. 1130.118C.120

P Ilflfi

(S)

0.011o.ou0.0140.0150.0170.0190.0200.0210.0220.0240.0260.027

CCRBP TIRE

(S)

0.0090.0120.0140.0150.017O.C190.0200.0210.0220.024O.C260.027

AVE VELP WAVE(»/S)

2914145546797447968809571030104010601080

88

00 10

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o « " o I o o KJ

to r

o

en o

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, K

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-*

«*

en o

to

o e

n o

en

o o

o o

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o o

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UlU

ION

O^U

I

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O O

O O

0 O

c o

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H tx

tO N

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O 0

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c

JO

WD

K

00

to o o o 0 0 o o 00 a

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BO

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91

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H t

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or*

M^^

^9

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M

HI

UII

W

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M

0 T

J90

*o t

o

HI

O

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- C?

fi"^

t"1

Hft

*4

fj

II O

HI art I M a to as r4 O nfl

O n M W to

-H

Oi

cr

n>

oooooooooo

n

*^ M

OO

OO

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OO

O

to M

Wto

toto

to-*

-*-*

-*.*

.*

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31 t

d

^^

^EB

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\ >

^^ w

fas

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n

^ M O

-*OOOOOOOOO

10 M W

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j ^^ e

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Cw to «

i^ ^"^

yw ^

jNJ O

D co O

D OD ^ so

ct> o\ en

MI t/1totototofototo-*-*^

FKi*

;Cu^

w^w

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N ""s

.^

OO

CIO

VC

OL

g^

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I UD

Table 7

TRAVEL-TIF1ES AND AVERAGE VELOCITIES

SITE HO. 34 fEHTOBA PISTOL RANGE DATE LOGGED 11-30-79 PLANK DIST- 2.0 PLATE D1ST= 2.0 AYE ORIGIN COKB = 0.005

DEPTH

(«)

"> **£ . J

5.07.5

10.012.515.017.520.0">J 5£.£. J

OK A£. J V»

27.529.2

OBIGIN COBRCS)

0.0050.0050.0050.0050.0050.0050. 0050.0070.0050.0050.0050.005

FIfcST S AfiBIVAL

(S)

0.0090.0160.0220.0260.0330.0380.0450.0530.0600.0650.0710.075

CCBfi S TIME

IS)

0.0070.0150.0210.0250.0320.0380.0450.0530.0600.0650.0710.075

AYE VEL S HAVE(M/S)

362340355394335399392380377386389391

DEPTH

IB)

2 c . ->5.07.510.012.515.017.520.022.525.027.529.2

FIRST S PEAK(S)

0.0140.0220.0270.0350.0420.0470.0540.0620.0680.0740.0800.084

CORE S PEAK

(S)

0.0110.0200.0260.0340.0410.0460.0530.0620.0660.0740.0600.084

P TlfiE

IS)

0.0090.0110.0130.0160.0190.0230.0300.0340.0370.0400.0430.046

CORE P IIHE

CS)

C.C070.0100.013C.0160.0190.0230.030O.C340.037C.0400.0430.046

AYE YEL P HAVE{fl/S)

355489597637666657587591610626641636

90

Table 8

TBA?EL-TIF!ES AND AVERAGE VELOCITIES

SITE NO. 35 SIERRA LINDA SCHOOLPLANK DIST= 2.0 PIATE D1ST* 2.0

DAIE LOGGED 11-30-79 AVE GHIGIN CORfe= O.OOU

DEPTH

t«)

2.55.01.510.012.515.017.520.022.525.027.528.6

ORIGINCOfiR(S)

O.OOUo.oouo.oouo.oouo.oouo.oou0. OOUo.oouo.oouo.oouo.oouo.oou

JFIfcST SARRIVAL

(S)

0.0150.0260.036O.OU50.0530.0610.0680.0760.0850.0950.1030.104

CCUfiS 1IHE

(S)

0.0120.02U0.035O.OUU0.0520.0600.0680.0760.0650.0950.1030.108

AVE VELS HAVE<3/S)

21320721522623824825926U265263267265

DEPTH

(«)

2.55.07.5

10.012.515.017.520.022.525.027.528.6

PIRST SPEAK

(S)

0.0220.031O.OU10.0500.0570.0670.0730.0810.0900.1000.1080.113

CORRS PEAK

(S)

0.0170.029O.OUO0.0490.0560.0660.0730.0810.0900.1000.1080.1 1J

p imt

(S)

0.0090.012O.C170.0250.0300.0330.036O.U370.0390.0420.044O.Q4b

COfifiP IIRE

(S)

0.0070.0110.0160.0250.0300.0330.036O.C370.0390.042O.OUUO.OU5

AVE VELE HAVE

(H/S)

3554U8456407421458489543579597626637

91

Table 9

TRAVEL-TIRES AND AYfBAGE ?£LOC1TJES

SITE NO. 36 SAS HIGUEL SCHOOIPL AUK DIST= 2.0 PLATE DIST= 2.0

EA1E LOGGED 11-29-79 AVE CBIGIN COBB= 0.006

DEPTH

(«)

2.55.07.5

10.012.515.017.520.022.525.027.530.0

OBIGINCOBB(S)

0.0060.0060.0060.0060.0060.0060.0060.0060.0060.0060.0060.006

FlfcST SABrilVAL

(S)

0.0180.0290.0400.0530.0640.0760.0860.0970.1070.1190. 1300.139

CCfiBs uni

IS)

0.0140.0270.0390.0520.0630.0750.0850.0970.1070.1190.1300.139

AVE VELS HAVE

(M/S)

177185194192197199204207211210212210

DEPTH

(fl)

2.55.07.5

10.012.515.017.520.022.525.027.530.0

FIBST SPEAK

(S)

0.0260.035O.OU80.0610.0710.0820.0940.1050.1150.1270.1380.147

COBBS PEAK

(S)

0.0200.0320.046C.0600.0700.0810.0930. 1040.1150.1270.1360.147

P TIBE

(S)

0.0110.0110.0120.0140.0150.0170.0190.0200.0220.0230.0250.027

CCfiBP USE

(S)

0.0090.0100.0120.0140.0150.017C.C19C.0200.0220.0230.0250.027

AVE VELP HAVE

(H/S)

291489646728843890927

10001030109011001110

92

Table 10

TRATEL-TIHES AVD AYIBAGE VELOCITIES

SITE WO. 37 AITA VIST! PABKPLA1IK DIST= 2.0 PLATE DIST= 2,0

DATE LOGGED 11-28-79 AVE ORIGIN C08B= O.OOU

DEPTH

(H)

2,55.07.510,012.515,017.520,022.525.027.529.9

ORIGINCCBB(S)

0.0040.0040.004o.oou0.004O.OOUo.oouo.oouo.oouo.oouo.oouo.oou

flBST SA&UIVAL

(S)

0.0110.0210.0260.03J0.0390.0450.0320.0590.0660.0720.0750.081

CCBBS 11HE

(S)

0.0090.0190.0250.032O.C39O.OU50.0520.0590.0660.0720.0750.081

AVE VtLS WAVEIH/S)

291256298309J2U3363383403U23U3367369

DEPTH

(H)

2.55.07.5

10.012.515,017.520.022.525.027.529.9

FIRST SPEAK

(S)

0.0170.0270.0320.039O.OU60.0520.0570.06U0.0720.0780.0810.087

CORKS PEAK

(S)

0.0130.0250.0310.036O.OU50.0520.0570. 06U0.0720.0780.0810.087

P 11 HE

IS)

0.0060.01J0.0170.0210.0240.02*0.0320.0350.0380.0400.0470.050

CCBBP HfiE

IS)

0.0060.0120.0160.0210.0240.028O.C320.0350.038 .0400.0470.050

AVE VELP HAVE

IH/S)

400414456485527540550574594626586599

93

Table 11

TRAVEL-TIRES AND AVEBAGE VELOCITIES

SITR NO. 38 SIAL BEACH WEAPONS STA tAIE LOGGED 11-20-79PLANK DIST= 2.0 PLATE DIST= 2.0 AVE CBIGIN COfifi- 0.005

DEPTH

(H)

2.55.07.510.012.515.017.520.022.525.026.7

ORIGINCCBR(S)

0.0050.0050.0060.0050.0050.0050.0060.0050.0050.0050.005

FiHSl SAfcfilVAL

IS)

0.0230.0330.0460.0560.0660.0750.0630.0910. 1000. 1Gb0.112

CCB6S TIME

(S)

0.0180.0300.0440.055O.C650.0740.0620.0900.0990.1050.112

AVE VELS IAVE(tt/S)

1401641691*2192202212221226237239

DEPTH

t«)

2.55.07.5

10.012.515.017.520.022.525.026.7

FIRST SPEAK(S)

0.0280.0390.0530.0620.0720.0810.0890.0970.1070.1130.119

CORBS PEAK

(S)

0.0220.0360.0510.0610.0710.0300.0880.0960. 1060.1120.116

P TIHE

(S)

0.0090.0110.0130.0190.0200.0220.0240.0250.0260.0290.029

COBBP IIBE

(S)

0.0070.0100.0130.0190.0200.0220.0240.0250.0280.0290.029

AVE VELP HAVE(H/S)

355489597536632667733803806864923

94

Table 12

TRAVEL-TIHES AHD AVEBA6E VELOCITIES

SITE HO. 39 BIDGELINE iATEB TAHK(KYi) CATE LOGGED 11-19-79 PLANK DIST= 2*0 PLATE D1ST= 2.0 AVE ORIGIN CORB= 0.013

DEPTH

t«)

2.55.07.510.012.515.017.520.022.525.027.8

OBIGIHCOBP(S)

0.0130.0130.0130.0130.0130.0130.0130.0130,0130.0130.014

flfcST SABBIVAL

<s>

O.OOb0.0170.0240.0310.03d0.0450.0520.0580.0630.0680.075

CCBBS 1IKE

(S)

0.0050.0160.0230.0300.0370.0450.0520.0580.0630.0660.075

AYE VELS WAV!(H/S)

541318324329333336339347359369372

DEPTH

CH)

2.55.07.510.012.515.017.520.022.525.027.8

FIHST SPEAK(S)

0.0130.0260.0320.0400.0460.0530.0600.0670.0710.0760.083

COBPS PEAK

(S)

C. 0100.0240.0310.0390.0450.0520.0600.0670.0"MC. 0760.083

P llfl£

(S)

0.0110.0140.0180.0230.0270.0300.032O.Q360.0380.0400.043

CCKEP IIME

(S)

0.0090.0130.017C.0230.0270.0300.0320.0360.0380.0400.043

AV£ VELP HAVEIH/S)

291384431443468504550558594626648

95

Table 13

TRAVEL-HUES AND AVERAGE VELOCITIES

SITE SO. «0 DIRBONC BAR|"»K BIST- 2.0 rim DIST= 2.

DEPTH

f M\ \ n '

2.55.0 7.5

10.0 12.5 15.0 20.2

OBIGIN CORK(S)

0.007 0.007 0.007 0.007 0.007 0.007 0.007

FlBSl SABBIVAL

(S)

0.011 0.019 0.02B 0.031 0.035 0.041 0.050

DATE LOGGED "'^'l 0 AVI ORIGIN COBB= 0.007

CCEB S TIKE

(S)

O.C09 0.018 0.027 0.030 0.035 0.041 0.050

AV£ VEL S UAVE

l»/S)

291 283 277 328 3t>1 369 405

DEPTH

(«)

2.5 5.0 7.5

10.0 12.5 15.0 70.2

FIRST S PEAK

(S)

0.018 0.026 0.035 0.038 O.OU1 0.0<*7 0.056

CORK S PEAK

(S)

C.01U 0.02U 0.034 0.037o.ouoO.OU7 0.056

P HttE

(S)

0.010 0.013 U.OIb 0.017 0.021 0.024 0.027

CCBB P 11WE

(S)

0.008 0.012o.oiu0.017 C.021 0.024 0.027

AVE VtL P WAVE

(tt/S)

320 414 517 599 602 630 7b1

Table 14

TRAVEL-TIMES AND AVERAGE VELOCITIES

SITE HO. 41 SKY TERRACE PLANK DIST* 2.0 PLATE D1ST

DEPTH

(H)

2.55.0 7.5

10.0 12.5 15.0 17.5 20.0 22.5 25.0 26.8

DEPTH

(H)

2.5 5.0 7.5

10.0 12.5 15.0 17.5 20.0 22.5 25.0 26.8

ORIGINCORK (S)

0.005 0.006 0.005 0.006 0.005 0.005 0.006 0.005 0.005 0.005 0.005

FIRST S PEAK

CS)

0.014 0.017 0.022 0.027 0.033 0.035 0.039 0.042 0.045 0.047 0.048

fl&ST SARRIVAL

(S)

0.009 0.012 0.016 0.020 0.025 0.030 0.03J 0.03b 0.038 0.040 0.041

CORR P II flE S PEAK

CS) (S)

0.011 0.008 0.016 0.010 0.021 0.013 0.026 0.015 0.032 0.016 0.034 0.020 0.038 0.022 0.042 0.023 0.045 0.024 0.047 0.025 0.048 0.026

CCRRS IIBE

(S)

0.007 0.011 0.015 0.019 0.024 O.C29 0.033 0.035 0.038 0.040 0.041

CCRR P HUE

(S)

0.006 0.009 O.C13 0.015 0.018 C.020 0.022 0.023 0.024 0.025 O.C26

CA1E LOGGED 11-17-79 2.0 AVJ ORIGIN CORR= 0.005

AVE VEL S HAVE

(M/S)

366459493516511509538578598631659

AVE VEL P HAVE

400536597679703756800873941

10001030

97

Table 15

TR»?EL-TMES ABD HVIRAGE ViLOCIIlES

SITB HO. « 2 SILBAB HORSEB* K.MK DIST= 2.0 OIST=

DEPTH

W

2.5 5.0 7.5

10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 29.3

DEPTH

(H)

2.5 5.0 7.5

10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 29.3

ORIGIN fjasj sCO *B AfiBIVAL< s ) (S)

0.005 o.012 0.005 0.017 0-006 0.024 0-005 o.030 0-005 0.036 0.006 0.041 0.006 o.047 0-006 0.052 0-006 0.056 0.006 o.060 0-006 0.065 0.004 o OhQ»» UO y

FIRST S CORR p IIRL PEAK S PEAK L

IS) rs) (S)!} {}" S- 013 °- 01 «0.023 0.021 0.014o'o°L9 °'° 28 °-016 0.036 0.035 0.022 0-041 0. 0(K; 2.0250*0^ 2' OU5 °-^8 0.052 0.051 O.OJ2 0-057 0.056 o 035 0-061 0.061 0.036o'til S- 066 **o'nif 2' 072 °-°^ 0-076 0.076 0.045

CCfcftS HUE

(S)

0.009 0.015 0.023 0.029 0.035 0.040 0.0*16 0.051 0.055 0.060 0.0650.069

COBB P TIWE

(S)

0.008 O.C13 0.017 0.022 0.025 0.026 O.C32 O.C35 0.036 0.040 0.043 0.045

CATE LOGGED 11-17-79 2.0 AVI ORIGIN COfifi- 0.005

AVE VEL S WAVE

2783263303453563733763*0407414420422

AVE VEL P WAVE

320364431463506540550574594626641652

98

Table 16

TBAVEL-TIHES AHD AVERAGE YfcLOCIlIES

SITE NO. 43 SYLSAR PARK BATE LOGGED 11-16-79 PLAHK DIST= 2.0 PLATE DIST= 2.0 AVI CBIGIN CO&B= 0.003

AYE VEL5 HAVE

(M/S)

20J 209 229 302 318 271 327 330 359 354 359 392

AVE VEL P iAVE

DEPTH

(«)

2.55.07.5

10.012.515.017.520.022.525.027.528.5

DEPTH

M)

2.55.07.5

10.012.515.017.520.022.525.027.528.5

OBIGINCOBR(S)

0.0030.0030.0030.0030.0040.0030.0030.0030.0030.0030.0040.004

FIRST SPEAK

(S)

0.0190.0330.0400.0400.0460.0630.0590.0670.0690.0^70.0830.080

FIflST SAfiiUVAL

(S)

0.0160.0260.0340.0340.0400.0560.0540.0610.0630.0710.0770.073

CORB P TIrtLS PEAK

(S) (S)

0.015 o.ooa0.030 0.0100.038 0.0120.039 U.01J0.045 0.0150.062 0.0170.058 0.0190.066 0.0200.068 0.02J0.077 0.0240.083 0.0260.080 0.027

COfifiS HUE

(S)

0.0120.0240.0330.0330.0390.0550.0530.0600.0630.0710.0770.073

CCBBP TIHE

(S)

O.OC6O.C090.0120.0130.0150.0170.0190.0200.0230.0240.0260.027

4005366467t*4843890927

1000982104010601060

99

Table 17

TBA7EL-TIHES AHD AVBBAGE VELOCITIES

SITE NO. *4 PLAHK DIST*

HILITCF HOUSE O.V. 2.0 PLATF DIS1= 2.0

EA1E LOGGED 11-16-79 AVI CBIGIN CORB= 0.006

DEPTH

(H)

2.55.07.510.012.515.017.520.022.525.027.529.0

ORIGINCOBRtS)

0.0070.0060.0060.0070.0060.0050.0060.0060.0060.0060.0060.005

FI&ST SAttfilYAL

IS)

0.0090.01b0.0180.0220.0270.0310.0360. 0400.0450.0500.0550.058

CCBFS 1IHE

(S)

0.0070.0150.0170.0220.0270.0310.0360.0400.0450.0500.0550.058

AVE VELS HAVEIH/S)

355336431463468488489502501501501501

DEPTH

(«)

2.55.07.510.012.515.017.520.022.525.027.529.0

PIBST SPEAK(S)

0.0140.0220.0240.0290.0330.0360.0410.0460.0500.0550.0610.063

COHBS PEAK

(S)

0.0110.0200.02JC.0280.0330.0360.0410.0460.0500.0550.0610.063

P 11 HE

{S)

O.OOti0.0110.0150.0170.0190.0210.0220.02J0.0250.0260.0280.028

CCBBP 1IHE

(S)

0.0060.010C.0140.0170.0190.0210.0220.0230.0250.026O.C280.026

AVE VELP HAVE(fl/S)

400489517599666720800873903964984

1040

TOO

Table 18

TRAVEL-TIBES AWD AVEBAGE VELOCITIES

SITE HO. 45 CEDAR HILLS NUfiSEfiY £ATE LOGGED 11-1b-79 PLAiK DIST= 2.0 PLATE DIST= 2.0 AVE CBIGIM COUB = 0.010

AVE VZL S HAVE (H/S)

260

DEPTH

(«)

2.55.07.5

10.012,515.017.520.022.525.027.529.7

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.525.027.529.7

ORIGINCOP*(S)

0.0100.0090.0090.0090.0100.0100.0090.0100.0100.0090.0100.010

FIRST SPEAK

(S)

0.0190.0260.0260.0320.0440.0500.0560.0610.0660.0730.0800.065

FIfiST SABBIVAL

(S)

0.0110.0220.0220.0280.0370.0430.0490.0540.0600. 067U.0730.07*

COBB P II Hi:S PEAK

(S) (S)

0.015 0.0120.026 O.C160.02t> 0.0180.032 0.0200.044 0.0220.050 0.0230.056 0.0250.061 0.0270.068 0.0260.073 O.C290.080 0.0310.085 0.032

CCRES 1IRE

(S)

O.C090.0210.0220.0280.0370.0430.0490.0540.0600.0670.0730.079

CCfifiP 1IHE

(S)

0.0090.0150.017C. 0200.0220.0230.0250.0270.028C.029O.C310.032

346 356 336 34b 356 369 373 372 375 374

AVE VEL P HAVE (M/S)

266336431509575657704744806664869930

101

Table 19

TBAVEL-TIflES AND AVEBAGE VELOCITIES

SITE MO. 46 PLANK DIST =

CAI STATE NOiTHhlDGi, 2.0 PLATE DI2T> 2. Q

DEPTH

<H)

2.55.07.5

10.012.515.017.520.022.525.027.529.1

DEPTH

(H)

2.55.07.5

10.012.515.017.520.022.525.027.529.1

ORIGINCOBB(S)

0.0060.0070.0070. 0060.0070.0060.0070.0060.0060.0060.0060.006

FIBST SPEAK

IS)

0.0160.0230.0290.0360.0440.0490.0580.0650.0890.0870.0870.091

FIES1 SAfalxIVAL

(S)

0.0100.0160.0230.0300.03B0.0440.0520. 0590.0810.0800.0810.085

CORB P lift*!S PEAK

(S) (S)

0.012 0.0120.021 0.0130.028 0.0190.035 0.0230.043 6.0280.046 0.0330.057 0.0370.064 0.0400.088 0.042C. 086 0.0430.086 0.0440.090 0.052

CCBfiS 1IF1E

(S)

0.0060.0150.0220.0290.0370.0430.0510.0560.080O.C790.0600.084

COBBP TIRE

CS)

0.0090.0120.0180.0230.0280.033O.C370.0400.0420.0430.0440.052

CAIE LOGGED 11-15-79 AVI CBIGIN COfiB= 0.006

AVE VEL S WAVE (H/S)

331

342343336346340342260314341344

A?E VilL P HAVE (H/S)

266 414 408 443 452 458 476 502 537 5d3 626 560

102

Tab

le 2

0

INT

ER

VA

L

VE

LO

CIT

IES

A

ND

E

LA

ST

IC

MO

DU

LI

SIT

E

NO

. 28

C

AB

AR

ILL

O

STA

TE

H

OSP

II

FIR

ST

5

Afi

filV

AL

DE

PTH

IH

T

NO

IN

CP

T

VEL

U

NC

INT

(f

l)

NB

AS

(S)

(H/S

) Jr

t/S

)

7.5-22.5

7 0.013

J48

( 340, J57)

25.0-29.2

3 0.042

597

( 581, 613)

FIR

ST

S

INC

PT

V

EL

(S)

(fl/

S)

FFA

K

UN

C IN

T

(B/S

)

0.0

21

348

( 340,

35

6)

0.0

50

596

( 581,

61

2)

o CO

FIR

ST

P

AR

feiV

AL

DE

PTH

I

IT

HO

IN

CP

T

VEL

U

NC

INT

H

EAS

(S)

(H/S

) (N

/SJ

6 0

.00

6

979

( *32,

1030)

3 0.0

23

10

50

(

95

1,1

18

0)

7.5

-20.0

25.0

-29.2

S?EL

(H/S)

348

597

DEPTH INT

(H)

7.5-22.5

25.0-29.2

PVEL

(H/S

)979

1050

DEPTH INT

IM)

7.5-20.0

25.Q-29.2

DENSITY

DEPTH

(H)

(G/CC)

15.3

2.06

SHEAR

HOD

(DARS)

2500

BU

LK

NO

D

(BA

RS

) 1

64

00

ECISSCNS

RATIC

0.427

0.264

Tab

le 2

1

INT

ER

VA

L

VE

LO

CIT

IES

A

ND

E

LA

ST

IC

MO

DU

LI

SIT

E

NO

. 29

H

Aft

lNA

D

EL

B

EI

FIRST S

ABK1VAL

DEPTH INT

NO

INCPT

VEL

UMC INT

(H)

RE AS

(S)

(rt/S)

(H/S)

5.0

-10

.0

10.0

-15.0

15.0

-25.0

25.0

-39.7

3 0

.00

63

0.0

20

5 0.0

35

7 0.

0<I9

169

( 1

66

, 1

71

)22

2 (

221,

222)

290

( 287,

294)

342

( 339,

34

5)

FIR

ST

S

FE

JKIN

CP

T

VEL

IH

C

INT

(S)

(H/S

) (P

/S)

0.0

13

0.0

25

0.0

41

0.0

52

17

3

( 172,

174)

22

1

( 2

2C

, 2

22

)290

( 2

87

, 2

93

)3

29

(

32

5,

332)

FIR

ST

P

AR

RIV

AL

o 45*

DE

PTH

IN

T

NO

IN

CP

T(H

) H

EA

S

(S)

2.5

-39.7

16

0.0

09

2.5

-39

.7

16

0.0

09

2.5

-39

.7

16

0.0

09

2.5

-39

.7

16

0.0

09

V£L

U

NC

IN

T

(H/S

) (H

/S)

17

20

(1

70

0,1

74

0)

17

20

(1

70

0,1

74

0)

1720

(17

00

,17

40

) 1720

(17

00

,17

40

)

SV

ELCH

/S)

169

222

290

3U2

DE

PTH

IN

T

(H)

5.0

-10

.010.0

-15.0

15.0

-25.0

25

.0-3

9.7

PV

EL(H

/S)

1720

17

20

1720

17

20

DE

PTH

IN

T

(M)

2.5

-39.7

2.5

-39.7

2.5

-39.7

2.5

-39.7

CE

NSI

TY

D

EPT

H

(«)

(G/C

C)

9.2

1.8

5

24

.9

1.9

8

SHE

Ah

HOD

(BA

RS)

5

33

16

80

BU

LKH

OD

(BA

PS

) 54100

56400

FC

ISS

CK

SR

AT

IC

0.4

95

0.4

92

0.4

P5

0.4

79

Tab

le 2

2

TN

TE

RV

Al

VE

LO

CIT

IES

A

ND

E

LA

ST

IC

MO

DU

LI

SIT

E

NO

. 3

0

iES

TH

INS

TE

RF

IRS

T

S A

RR

IVA

LD

EPT

H

IRT

N

O

INC

PT

V

fcL

UN

C IB

lT

HEA

S (S

) (H

/S)

(H/S

)

3 -.

001

4 0.0

05

4 0.0

22

4 0.0

34

2.5

- 7

.57

.5-1

5.0

15.0

-22.5

22.5

-29.5

176

( 173,

180)

205

( 2

01

, 209)

266

( 2

61

, ^7

1)

311

( 3

01

, 322)

FIB

ST

S

FFfl

KIN

CP

T

VEL

CK

C IN

T(S

) (B

/S)

(P/S

)

0.0

04

17

0 (

155,

132)

0.0

11

20

4 (

20

0,

20

9)

0.0

24

250

( 243,

256)

0.0

48

33

6

( 3

16

, 36

C)

o

01

FIR

ST

P

Afi

BIV

AL

DEP

TH

INT

NO

IN

CPT

H

EAS

(S)

3 0.0

06

10

10

2.5

- 7

.5

7.5

-29.5

7.5

-29.5

0.0

13

0.0

13

VEL

U

NC

INT

(f

l/S

) (f

l/S

)609

( 58

2, 63

8)

1440 (138J,1520)

1440

(1380,1520)

7.5-29.5

10

0.013

1440 (1380,1520)

STEL

(H/S

) 176

205

266

311

DEPTH INT

(B)

2.5- 7.5

7.5-15.0

15.0-22.5

22.5-29.5

PTEL

fH/S)

609

1440

1440

1440

D£PTH INT

(H)

2.5- 7.5

7.5-29.5

7.5-29.5

7.5-29.5

CENSITI

DEP1H

(K)

(G/CC)

9.1

1.9

5

24.5

2.0

8

SHEA

RH

OD

(BA

RS)

82

5

20

20

BU

LKM

OD(B

AP

S)

39500

40

60

0

EC

ISS

CK

SE

AT

IC

0.4

54

0.4

90

0.4

92

0.4

76

Tab

le 2

3

INT

ER

VA

L

VE

LO

CIT

IES

A

ND

E

LA

ST

IC

BO

DU

LI

SIT

E

MO

. 31

B

0RB

AH

K

FIB

E

STA

TIO

NF

IRS

T

S A

RR

IVA

LD

EPT

H

INT

NO

IN

CP

T

VEL

UM

C IM

T

(fl)

H

EA

S (S

) (H

/S)

(B/S

)

2.5

-12.5

5

0.0

01

4

05

(

394,

41

6)

12.5

-24.0

6

0.0

04

452

( 4

46

, 457)

FIR

ST

S

INC

PT

V

FL

IS)

(M/S

)

0.0

06

0.0

10

PFA

K(J

NC

39

1451

( 361,

402)

456)

FIR

ST

P

AH

KIV

AL

D

EPT

H

IMT

NO

IM

CP

T

VEL

U

NC

IN

T(N

) H

EAS

(S)

fH/S

) (B

/SJ

2.5

-10.0

4

0.0

03

594

( 590,

598)

10.0

-24.0

7

0.0

09

9

40

(

907,

97

6)

SVEL

(H/S

)405

452

DEPTH INT

(B)

2.5-12.5

12.5-24.0

P?EL

(H/S)

594

940

DEPTH INT

(H)

2.5-10.0

10.Q-24.0

TENSITY

DEFTH

(B)

(G/CC)

20.0

2.16

SHEAR

HOD

(BAKS)

4420

BULK

HOD

(BARS)

13200

FCISSCNS

FATIC

0.065

0.350

Table

24

INTERVAL VELOCITIES AND ELASTIC BODULI

SITE NO.

32

SHELLHAKER ISLAND

FIRST S ARRIVAL

DEPTH I NT

NO

INCPT

VEL

UNC INT

HEAS

(S)

(fl/S)

(fl/S)

FIRST S

INCPT

VKL

(S)

(H/S)

2.5-20,0

20.0-29,0

8 -,000

5 0,059

207

( 205, 210)

55**

( 54J, b66)

0.006

0.059

209

470

TFAK

UliC

(K/S

)

( 207, 212)

( 443, 5C

1)

FIHST P ARRIVAL

DEPTH I NT

NO

INCPT

VEL

UNC INT

(N)

HEAS

(S)

(B/S

) (fl/S)

5.0-29,0

11

0,009

1650 (1610,1690)

5.0-29.0

11

0.009

1650 (1610,1690)

S DEPTH INT

P DEPTH I NT

VEL

VEL

CVS)

(H)

(H/S)

(fl)

20?

2.5-20.0

1650

5.Q-29.0

55U

20.0-29.0

1650

5.0-29.0

DENSITY

DEPTH

(H)

(G/CC)

16.7

1.97

24.5

2.15

SHEAR

HOD

(BAKS)

852

6610

BULK

BOD

(BAR

S)

52UOO

49600

FCISSCHS

PATIC

0.492

0.436

Table

25

INTERVAL VELOCITIES AMD ELASTIC MODULI

SITE NO* 33

CYPRESS COLLEGE

FIRST S

ARRIVAL

DEPTH IHT

MO

INCPT

VEL

UNC INT

(PI)

HEAS

(S)

(H/S

) (H/S)

2.5-10.0

10.0-23.8

0.003

218

( 217, 220)

0.011

261

( 259, 263)

FIRST S

FFAK

INCPT

VEL

UFC INT

(S)

(H/S

) (B

/S)

0.008

211

( 20

9. 213)

0.017

259

( 256, 262)

o CO

FIRST P

ARRIVAL

DEPTH INT

HO

IHCPT

VEL

UHC INT

(«)

HEAS

(S)

(H/S)

(M/S

) 2.5-23.8

10

0.009

1550 (1510,1590)

2.5-23.8

10

0.009

1550 (1510,1590)

S VEL

218

261

DIPTH INT

W2. 5-10.0

10.0-23.8

PVEL

(M/S)

1550

1550

DEPTH INT

(H)

2.5-23.8

2.5-23.8

DENSITY

DEPTH

(B)

(G/C

C)

20.0

2.00

SHEAR

NOD

(BAR

S)

1370

BULK

HOD

(BARS)

46100

fCISSCNS

FATIC

O.U90

O.U85

Tab

le 2

6

IHTftRVAt

VELOCITIES AN

D ELASTIC MODULI

SITE HO.

34

VEHTURA PISTOL RANGE

FIRST S

ARRIVAL

DEPTH I NT

HO

IHCPT

VEL

UNC IN

T(i)

HEAS

(S)

(H/s

) (n/s)

2.5-20.0

8 0.001

399

( 38

9, 410)

20.0-29.2

5 0.006

42J

( 4U, 43

5)

FIR

ST

S

IMC

PT

V

*L

(S)

(H/S

)O

KC

IN

T

(H/S

)

0.0

05

356

( 3

4fl

, 364)

0.0

13

415

( 4

1U

, 416)

FIRST P

ARRIVAL

DEPTH IHT

HO

IHCPT

VEL

UNC

INT

(H)

REAS

(S)

(B/S)

(H/S)

2.5-15.0

6 0.004

813

( 763, 844)

17.5-29.2

6 0.007

756

( 734, 779)

S DEPTH IHT

VEL

(H/S

) (H)

399

2.5-20.0

423

20.0-29.2

PV

EL(H

/S)

813

756

DEP

TH

INT

2.5

-15.0

17.5

-29.2

DE

NSI

TY

D

EPT

H(B

) (G

/CC

) 12.2

2

.06

2

3.2

2

.10

SH

EA

R

NOD

(BA

RS

) 3290

3770

BU

LK

HO

D

(BA

RS

) 9230

69

90

FC

ISS

ON

S

BA

TIC

0.341

0.271

Ta

ble

27

IRT

ER

VA

l V

EL

OC

ITIE

S AN

D E

LA

STIC

M

OD

ULI

SIT

E

WO

. 35

SI

ER

RA

L

IHD

A

SCH

OO

LF

IRS

T

S A

RR

IVA

LD

EPT

H

IVf

90

II

ICP

T

VEL

OM

C IH

T

(H)

HEA

S (S

) (f

l/S

) (H

/S)

2.5

- 7.5

3

0.0

00

216

( 2

07

, 22

6)7

.5-2

0.0

6

0.0

11

J09

( J03,

J1

5)

20.0

-28.6

5

0.0

02

2

70

{

26

1,

276)

FIR

ST

S

IHC

PT

V

EL

(S)

(fl/

S)

FEA

R

OR

C

0.0

06

0.0

16

0.0

07

22

230

627

0

IWT

( 218,

227)

( 297,

315)

( 264,

275)

FIR

ST

P

AR

RIV

AL

DE

PTH

IH

TI"

)2.5

- 7.5

10.0

-17.5

20.0

-28.6

HO

II

ICP

T

RE

AS

(S)

3 0.0

02

a 0.

010

5 0

.01

8

VEL

OM

C IB

T

CB

/S)

<H/S

) 53

2 (

U96

, 573)

678

( 6

19

, 750)

105U

(1

01

0,1

09

0)

SVEL

H/S)

216

309

270

DEPTH IHT

(H)

2.5- 7.5

7.5-20.0

20.0-28.6

PVE

L(H/S

)532

673

1050

DEPTH IMT

(H)

2.5- 7.

510

. 0-17. 5

20.0-28.6

DE

HS

ITf

DE

PT

H(H

) (G

/CC

)

9.5

2

.0U

SHE

AR

HO

D(B

AR

S)

19

60

BU

LK

MOD

(BA

PS

)

6790

ICIS

SC

NS

Fft

TT

C

O.U

01

0,3

69

O.U

6U

Tabl

e 28

INTERVAL VELOCITIES AND ELASTIC MODULI

SIT* NO

. 36

SAM HIGUEL SCHOOL

FIRST 5

ARRIVAL

DEPTH IMT

NO

INCPT

VEL

UHC INT

(H)

HEAS

(S)

(ft/S)

2.5-10.0

12.5-30.0

0.002

0.010

199

( 19

6, 20

2)

230

( 22

3,

FIRST S

PEAK

INCPT

V*L

CKC INT

(n/s)

0,007

0.015

13fl

(

185, 19

2)

226

( 223, 22

9)

FIR

ST

P

AR

RIV

AL

D

EPT

H

IHT

M

O IN

CP

T

V£L

U

tiC

INT

(H)

NE

AS

(S)

(H/S

) (H

/S)

2.5

-10.0

U

0.0

07

11

490

(1400,1

b90)

2.5

-30.0

12

0.0

07

1520

(1

49

0,

SVEL

(H/S

)19

9230

DEPTH INT

(«)

2.5-10.0

12.5-30.0

PVE

L(n

/s)

1U90

1520

DEPTH IHT

(«>

2.5-10.0

2.5-30.0

CENSITX

DEPTH

(H)

(G/CC)

29.5

1.95

SHEAR

HOD

(BARS)

10UO

BULK

HOD

(BAR

S)

U3UOO

rcissrus

RATIC

O.U88

Tab

le 2

9

INT

ER

VA

L

VE

LO

CIT

IES

A

ND

E

LA

ST

IC

rtO

DJL

I

SIT

E

NO

. 37

ALT

A

VIS

TA

P

AhK

FIR

ST

3

AR

H1V

AL

DE

PTH

IN

T

NO

IN

CP

T

VK

L U

NC

iN

T

NB

AS

(S)

(H/S

) (f

l/S

)

7.5

-25.0

8

0.0

05

374

( 37C

, J77)

Flh

ST

S

PEA

KIN

CP

T

VEL

O

KC

INT

(S)

(«/S

) (B

/S)

0.012

378

( 371, 385)

ro

PIBST P

ABBIVAL

DEPTH INT

NO

INCPT

VKL

UNC INT

(1)

HEAS

(S)

(fl/

S)

(fl/

5)

7.5-29.9

10

0.006

6d6

< 667, 707)

SVEL

(H/S)

37U

DEPTH IIT

(H)

7,5-25.0

P VEL

DEPTH INT

686

7.5-29.9

CENSITI

DEPTH

(M)

(G/C

C)

20.0

1.97

SHEAB

HOD

(BARS)

2760

BULK

HOD

(BAPS)

5610

FCISSCNS

RA1IC

0.269

Tabl

e 30

INT

ER

VA

L

VE

LO

CIT

IBS

A

ND

E

LA

ST

IC

MO

DU

LI

SIT

E

NO

. 38

SEA

L

BEA

CH

W

EA

PON

S SX

AF

IRS

T

S A

RR

IVA

LD

EPT

H

IHT

N

O

INC

PT

V

6L

UN

C

INT

(f

l)

HE

AS

(S)

(0/5

)

2.5

- 7

.5

10.0

-22.5

22.5

-26.7

0.0

04

0.0

21

0.0

35

( 1b

4,

19

J)

284

( 27d

, 290)

35

1

( 317,

J94)

FIH

ST

S

TEA

KIN

CP

T

VEL

L'

NC

INT

(S)

(H/S

) (f

l/S

)

0.0

07

170

( 168,

172)

0.0

26

279

( 273,

26

5)

0.0

42

351

( 317,

394)

(A)

FIRST P

AfiBIVAL

DEPTH INT

NO

TNCPT

(fl)

NBAS

(S)

2.5- 7.5

3 0.004

10.0-26.7

8 0.012

10.0-26.7

8 0.012

VtL

UNC INT

(M/S

) (fl/S)

S03

( 831, 990)

1490 (1410,1570)

1490 (1410,1570)

S DEPTH INT

P DEPTH INT

TEL

VEL

(«/S)

(«)

(B/S)

(fl)

189

2.5- 7.5

903

2.5- 7.5

284

10.0-22.5

1490

10.0-26.7

351

22.5-26.7

1490

10.0-26.7

DENSITY

DEPTH

(H)

(G/CC)

20.0

1.98

SHEA

fiHOD

(tiABS)

1600

BULK

ROD

(BARS)

41500

ICISSCNS

BATIC

0.477

0.4P1

0.470

Tab

le

31

INT

ER

VA

L

VE

LO

CIT

IES

AN

D £L

A5T

1C

flO

DU

LI

SIT

E

NO

. 39

B

IDG

EL

INE

to

ATE

K

TAN

K (

bVW

PIH

ST

S

Afc

iiiV

Al.

DE

PTH

IN

T

NO

INC

PT

V

fcL

UMC

ibIT

(H

) N

BA

S (S

)

5.0

-20

.0

20.0

-27.8

0.0

02

0.0

11

J55

J59)

478)

FIB

ST

S

INC

PT

V

EL

0.0

10

0.0

25

f AK

U

KC

INT

J53

433

( 4

52

,35

7)

520)

FIU

ST

P

DE

PTH

IN

T

NO

IN

CP

T

VK

L(N

) N

BA

S

(S)

2.5

-12.5

5

0.0

04

12

.5-2

7.8

7

0.0

14

UN

C

HIT

547

( 537,

b57)

( 9

11

,

SVEL

(H/S

) 355

355

459

DEPTH INT

(«)

5.0-20,0

5.0-20.0

20.0-27.8

PVE

L(H

/S)

547

547

945

DLVlti INT

(ft)

^.5-12.5

2.5-12.5

U.5-27.tt

CE

NSI

TV

D

EPT

H

(«)

(G/C

C)

9.2

1

.99

1

6.7

1.9

7

24.7

2

.19

SH

JsA

BM

OD

(BA

BS

) 2510

24

90

4620

BO

LKN

OD

(BA

BS

) 2

60

02

58

013400

FC

ISS

CN

SB

AT

IC

0.

13

50

. 135

0.3

46

Table

32

INTEBVAL VELOCITIES AND ELASTIC MODULI

SITE NO. 40

DIAMONC BAfi

FIRST

i> AKK1VAL

DEPTH INT

NO

INCPT

VkL

UfcC If

cT

(1)

NBAS

(S)

(M/S)

2.5- 7.5

10.0-20.2

3 -.001

4 0.011

270

( 267,

519

I 49

7, 543)

[EAK UhC

INT

FIBST S

INCPT

VRL

(S)

(M/S)

0.0

04

253

( 250,

256)

0.0

18

53

8

( 5

08

, 572)

FIbST P

A*ti

lVAL

DEPTH INT

NO

INCPT

VKL

UNC IHT

(1)

HEAS

(S)

(H/S)

(rt/

5)

2.5-15.0

6 0.005

609

( 77J, 849)

2.5-15.0

6 0.005

809

( 773, d49)

S VBL

(M/S

)270

519

DEPTH

INT

2.5- 7.5

10.0-20.2

P VEL

DEPTH INT

609

809

2.5-15.0

2.5-15.0

DENSITY

DEPTH

(B)

(G/C

C)

7.4

2.02

16.7

2.06

SHEAB

NOD

(BAKS)

1480

5560

EULK

NOD

(BARS)

11300

6090

tCISSChS

GATIC

0.4

37

0.1

50

Tab

le 3

3

INT

EB

VA

l V

EL

OC

ITIE

S

AN

D

EL

AS

TIC

M

OD

ULI

SIT

E

NO

. 41

SK

Y

TE

BR

AC

tF

IRS

T

X A

fifi

lVA

LD

EPT

H

INT

NO

IN

CP

T

VtiL

U

NC

iNT

(1

) B

EAS

(S)

|fl/

S)

2.5

-15.0

1

7.5

-26.8

6 0.0

02

5 0

.01

7553

i 5

40

, i>

67

) 1

11

0

(10

40

,11

80

)

PEAK

INT

FIRST S

INCPT

VRL

(S)

(M/S)

0.0

06

502

( 478,

52S

) 0.0

22

1010

( 933,1

090)

FIRST P

ABJUVAL

DEPTH INT

NO

INCPT

V£L

UNC INT

(*)

BEAS

(S)

(«/S

) (d/^>)

2.5-15.0

6 0.004

916

( «85, 949)

17.5-26.8

5 0.014

2JJO

SV

El

(B/S

)5

53

1110

DE

PTH

IN

T

(B)

2.5

-15.0

17

.5-2

6.8

PV

EL

(B/S

)916

2330

DE

PTH

IN

I

fflj

2.5

-15

.017*5-2

6.8

DENSITY

DEPTH

(fl)

(G/CC)

9.1

2.03

SHE'

Afi

flOD

(B

AR

S)6230

BU

LK

HO

D

(BA

RS)

8740

ICISSONS

RATIC

0.2

12

0.3

54

Tab

le

34

TH

TPR

VA

I V

EL

OC

ITIE

S

AND

EL

AS

TIC

M

OD

ULI

SIT

E

NO

. 42

SY

LHA

R

NU

RSE

**F

IRS

T

3 A

RH

iVA

LD

EPT

H

INT

M

O T

NC

PT

VEL

U

NC

INT

(«

) H

EAS

(S)

(fl/

3)

(fl/

S)

2.5

-12.5

5

0.0

02

380

( 3

73

, 387)

12.5

-29.3

8

0.0

10

497

( 4«9,

50

5)

FI8

ST

S

FFA

KIN

CP

T

VEL

U

KC

TNT

(S)

(M/S

) (H

/S)

0.0

07

366

( 3

52

, 38

2)

0.0

13

465

( 460,

470)

DEPTH INT

NO

(N)

HEAS

2.5-10.0

412,5-29.3

8

FIRST e

AKRIVAL

INCPT

VEL

UUC INT

(S)

(rt/

b)

(N/3

) 0.0

04

547

( 5

2d

, b67)

0.0

10

d3ti

(

81

3,

d65)

SVEL

n/s)

380

497

DEPT

H INT

(N)

2.5-12.5

12.5-29.3

PVE

L(M

/S)

547

838

0£PTH INT

(d)

2.5-10.0

12.6-29.3

DENSITY

DEPTH

(K)

(G/CC)

9.1

2.10

SHKAR

NOD

(BAR

S)3040

BU

LK

riOD

(B

AP

S)

2240

ICIS

SC

NS

fi

AT

IC

0.0

33

0.2

28

Tab

le 3

5

INT

ER

VA

L

VE

LO

Cll

IES

A

ND

^

SHE NO

. 43

SYLHAB PARK

FldST ^

DEPTH IhT

NO

INCPT

Val.

MEAS

(S)

JUT

UK

1ST

S IN

LtT

V

BL

IS)

(M/S

)

EEA

K

2.

10

.2

2.

5-

70-2

05-2

7

.5 .0 .5

3 4 3

0,

0.

.

003

005

000

<*i

bJb

J

Jb

u

t <

I -»

I J

^ ?r

f^>

cf

4. C

t

^bti)

Jb

^)

jti?

)

U.O

U4

0

.01

1U

.OU

6

210

36

7355

Ihl

Ml,

2

59

)3

55

, 37

9)3

26

, 36

7)

oo

FIR

ST

*

DE

ET

H

IkT

N

O

INC

ET

V

Li.

(«)

HE

AS

(S)

2.5

- 7

.5

2.5

- 7

.50.0

04

O

.JO

U7.5

-28.5

9

0.0

06

1UT

( d

bt,

1010)

i d

oc,

SVEL

(n/s

)246

363

356

DEPTH I NT

(H)

2.5- 7.5

10.0-20.0

22.5-27.5

PVE

L(B

/S)

934

934

1350

U&PTU I NT

(rt)

2.5- 7.5

2.5- 7.

b7.5-2d.5

DE

NSI

TY

D

EE

1U

(«)

(G/C

C)

10.1

2.02

SU

EA

aH

OD

(BA

RS

)

2660

BU

LK

MO

D(B

AR

S)

14

10

0

KIS

SC

NS

BA

TIC

0.4

63

0.4

11

0.4

63

Tab

le

36

TN

TE

BV

Al

VE

LO

CIT

IES

IN

D

EL

AS

TIC

M

OD

UL

I

SIT

E

NO

. 44

HIL

LT

OP

H

OU

SE

0.V

.F

IRS

T

S A

fifc

lVA

LD

EPT

H

I N

T N

O

INC

PT

V

fcL

UM

C IN

T

(N)

NE

AS

(S)

(tt/

3)

(rt/

S)

7.5-29.0

10

0.003

531

( 526, b36)

FIRST S

FFAK

1NCPT

VEL

UKC INI

(M/S)

(n/s

)

543

( 533, 553)

0.00

9

FIR

ST

P

AH

UIV

AL

D

EPT

H

IKT

N

O

INC

PT

V

EL

UN

C

INT

(N)

NE

AS

(S

) (M

/S)

(H/S

j 10.0

-29.0

9

0.0

11

1

70

0

(16

30

,17

70

)

SVEL

(H/S

) 531

531

DEPT

H IN

T

7.5-29.0

7.5-29.0

PVE

L(B

/S)

1700

1700

DfcP

TH INT

(H)

10.0-29.0

10. 0-

29.

i)

DENSITY

DEPTH

(«)

(G/C

C)

9.1

2.05

20.0

2.17

SHKAfi

MOD

(BARS)

5790

6130

BULK

NOD

(BARS)

51UOO

54400

EC

ISS

Cti

S

BA

TIC

0.4

46

0.4

46

Table

37

INTERVAL VELOCITIES AND ELASTIC MODULI

SITE NO

. 45

CEDAR HILLS NURSEHK

FIRST S

AH&1VAL

DEPTH I NT

MO

INCPT

V£L

UNC INT

(N)

HEAS

(S)

(fl/

S)

(H/S)

5.0-29.7

7.5-29.7

11

0.005

10

0.004

405

( 396, 415)

392

( Jt

ib,

J99)

FlkST S

PEAK

INCPT

VEL

CJNC

INI

(M/S)

(H/S

)

J92

( 379, 406)

378

( 366, 39

1)0.010

0.008

ro

o

FIR

ST

P

AH

BIV

AL

D

EPT

H

IRT

N

O

INC

PT

V

EL

UN

C IN

T(N

) H

EA

S

(S)

(M/S

) (M

/S)

5.0

-12

.5

4 0

.01

0

11

00

{1

06

0,1

13

0)

12

.5-2

9.7

8

0.0

14

16

60

(1

600,1

720)

SVEL

(H/S)

405

392

DEPTH INT

5.0-29.7

7.5-29.7

PVEL

(H/S)

1100

1660

DEPTH INT

(N)

5.0-12.5

12.5-29.7

CENSIT*

DEPTH

(M)

(G/CC)

9.1

1.90

9.1

1.90

SHEAR

MOD

(BARS)

3130

2930

BULK

MOD

(BARS)

18600

48400

FCISSCNS

HATIC

0.420

0.470

Tab

le 3

8

INT

ER

VA

L

VE

LO

CIT

IES

A

ND

SIT

E

NC

. 46

C

AL

S

I A

lt)

FIR

ST

ii

DE

PTH

IK

T

NO

INC

PT

V

hi.

(M)

«EA

S

(S)

ilU

UU

Li

UW

LF

liiS

T

S IN

CP

T

VEL

2.5

-29

.7

5.0

-29

.710

0.0

00

9 0

.00

0J4J

I J4

J

(,

jU5

)0.0

06

U.O

Ub

EEAK

C»C

INT

J41

34U

336,

3U

C, 3U7)

FIRST P

ABBIVAL

DEPTH IKT

NO

INCPT

VEL

UNC 1NT

(d)

NBAS

(S)

(rt/i>)

(«/S

j 2.5-17.5

7 O.OOU

527

( 5U, 5U

2)

20.0-27.5

1 0.029

1ddO (1660,2170)

SV

EL

Ifl/

S)

343

343

DE

PTH

I

NT

(«)

2.5

-29.7

5.0

-29.7

PV

IL(H

/S)

527

1880

DEP

TH

I NT

(M)

2.5

-17.1

*20.Q

-27.5

CENSITX

DEfTH

(fl)

(G/C

C)

20.1

2.00

20.1

2.00

SHEAR

HOD

(BARS)

2110

2080

BULK

NOD

(BARS)

2750

68100

FCISSCNS

BATIC

0.195

0.485