-- 8gmw.consrv.ca.gov/shp/apsi_siteinvestigation... · 4/25/1979 · :if::>.t...i...

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October 25, 1983

Mr. Joel Randsl1 City of Signal Hill 2175 Cherry Av~11t1e

Signal Hill,CA 90806

Dear Mr. Randall:

This is to acknowledge receipt of your letter of October 3, 1983 and the forty-seven rcporls prepared for sites within the Special St11dies Zone (SSZ) in Signal Hill.· Ib<e reports were revicwc•d by :J.,\. Evan;;, Inc. and are identified~s Jab Number 78-34-00 to 78-34-44, 78-34•47, and 78-34-48. Because these rep~irts presurnably have been r1:~viewed ~1Y D.A. Evans, they will be filed ~• required under the Alquist-Priolo Speci~l Studies Zones Act. However, it is noted that twenty-two of the reports lack accompanying review letters by ~lr. Evans. These are 78-3~-00, 01 to 04, 06, 09, 14, 16 to 20, 22, 25, JO, Jl, JS, 44, 47, 48. Suth review cfocumcntution should be submitted to complete our files.

ln addition, you submitted a review letter 01 May 24, 1977 by Evans Goffman & McCormick for the report "Geology and Seismic Potcnti.'ll Study,• South L Lots 4 f. 5, Crescent Heights Tract, Sign:d Bill" dat~d ~lay 6, 1977, by Dennis All~n. This report also .t>hnuld bf' subml t ted to c.oinplc,te that file.

Other outstanding reports ar~ identifie-d on Pl.:.it~ l oi? th~· D.A. I::v~ns Report of June 16, 1983 as having been prepared und .. r the APSSZ Act and-c-0n"-fi-le-----wi--tl> Ure 6'ioryc cir·-Af-gna-1 tlrt-i-:--- 1m:,----r,.,rrdr-i =a-t-i-m,,.---,,-f these repo4ts; which should be suhuiitt:l.~d to u;.; for fi11nr·~ are <:irclcd ir1 r~d on the 3tt~cticd ~vpy of PlatP 1.

A~iJ..i,.L.,.£i.:om........t.h~ compl.i.:1.U(;.~ ~t;.µt:r.:.t. uf t..h.i~ re:qttt::!at, ~Im!. i:!l"t:: Jt::~iruub. vi havinr, llS much info.r.r.-;ation- ava:i.l.nbl~~ js po~sible :in nrdrr to r:-:ake ~

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Mr. E,arl W. Jlart Senior (;eolor,ist Division of Mines & Geology San Francisco District Offlcc Ferry Building San l'rancisco, CA 941.ll

RE: Alquist-Priolo Special Studies Zone Act -Zone Revision Request

lkar Mr. Hart:

Per your recornrn(\nd:<tions by Jetter dated August 2,•1983, the invcst"igativc reports refcrcnu'd in Mr. ll.>.. !'vans' report arc hen,Jiv sent to your attention. This wi.11 bring our City into cornpJinnce with stote law as required unuer the APSSZ Act. The -.eport~ an' for your clqiartrnent' s perusal and required filing per California Administrative Code (Section 3602).

Also enclosed is a cop)' of the report hv Evan~, r:offman and McC:orm11ck, dated leh1-u111·y 21, 1977. lt is th~ Clty's contention tl1at based on tliis original report anJ the enclosed subsequent: ·in1·cstjgati1·c reports, that the 1\l"iS: n-t:cd;; to be revised. I herchy 1·e•1uest the state gcolocist to 111·occcd withe study to Jo so as soon as fc•asibJe.

l I you have any questi.ons, pJe11se call -<iw at ( 2 l 3) 426-7:1:;3, __ p,XtE'nsjon _ZJ2, _______________________________ _

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?.3011 1r11.1ullnri p;:,,rkway. suite j-10. li:l.guna hills, califorrna 9?Qb1

(714) 770-8528

CITY OF SIGNAL !!ILL 2175 Cherry Avenue

July 24, 1979

Signal Hill, California 90806

Attention: Ms. Lorraine Keefer

•• d. a. evans inc. engineering Ctnd geological

consultants in applied ~.=::irth sciences

Our Job 78-34-12 -/'I c 3 1"'"'-1'1 e -

Subject: Review of Report - Compliance with AlquistPriolo Special Studies Zones Act, Proposed Residential Development at J')03 Temple Avenue

Report Reviewed: "Geologic And Soil Engineering Tnvestigation Proposed Signal Hills Condominiums .... ", dated April 25, 1979, by Robert Stone & Associates

Gentlemen:

This letter summarizes the results of our review of

the above referenced letter-report. The purpose of our review

was to determine whether or not the report provides compliance

with Section 2623 of the Alquist-Priolo Special Studies Zones

Act, and was authorized under the general agreement between our

firm and the City.

It is our opinion that the report does satisfy the

requirements of the Act and can be approved by the City for that

purpose.

GENERAL C01'1MENTS

1. Until the results of our studies of the implications

of the Act on your City and its development policies

have been approved, we recommend that, unless speci-

ficolly waived, the City insist on subsurface explo-

-. _ __.

I~ ,, . .

.. '•. +

CITY OF SIGNAL HILL July 24, 1979 Page Two

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DAE/sm

Our Job 78-34-12

ration (i.e., trenches) to determine the presence or

absence of faulting on a particular site. Our studies

have tentatively produced a method of safely climina

ti ng some of this exploration and that method is being

implemented in our reviews.

2. Although the Act deals with the prevention of ground

rupture on the property, the hazards due to ground

shaking are inter-related and cannot be ignored. We

recommend that you (a) assure yourself that any ground

shaking criteria provided by the consulting geologist

is incorporated into the structure design by the

developer, (b) that the reports by the geologist and

consulting soil engineer are coordinated, and (c) the

consultants involved approve the final plans for

development.

Respectfully submitted,

.~.:-~"~"ANS ·--~ '£ y --/ ./ -- . 1---Dennis A. Evans Engineering Geologist 19 Civil Engineer 14450

Three copies submitted

IS214

GEOLOGIC AND SOILS ENGINEERING INVESTIGATION Proposed Signal Hills Condominiums Portion of Tract No. 35227 19th Street and .Temple Avenue Signal Hill, California

Prepured for: Mathew-Tupuz Associates 18321 Ventura Boulevard Tarzana, Calfiornia 91356

')E/vlfL6 Job No.: Log No.: April 25,

1392-00 4208 1979

Robert Stone & Associates

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.

Robert Stone & Associates, Inc. ~ngineering G1.1alogy Soi! Engine~ring Material rr.1Sting

8020 Deering Avenue, Canoga Park, California 91304 24707 San Fernando Rd., Newhall. Ca. 91321

(213) 346·0565 (805) 255-5260 Sir)c;e 1!J56

April 25, 1979

Mathew-Tupaz Associates 18321 Ventura Boulevard Tarzana, California 91356

Attention: Mr. David Fleck

Job No.: Log No.:

1392-00 4208

Subject: GEOLOGIC AND SOILS ENGINEERING INVESTIGATION Proposed Signal Hill Condominiums Portion of Tract No. 35227 19th Street and Temple Avenue Signal Hill, California

Gentlemen:

This report presents our opinions regarding geologic and founda

tion engineering factors affecting the development of the subject

property. Our investigation was performed in April, 1979.

INVESTIGA'l'ION

Our investigation included:

1. Subsurface exploration by means of 21 exploratory pits

excavated by backhoe equipment to determine depths and

areal extents of old fills and/or oil sumps.

2. Continuous backhoe trenching running east-west across the

site (separated into 5 overlapping segments to avoid ex

isting development) to determine the presence or absence

of surfical faults within the subject property.

3. Subsurface exploration and sampling by drilling equipment

to determine depths and geotechnical conditions of the ex

isting fills and/or oil sumps and natural soils.

4. A program of laboratory testing.

5. Review of data in our files.

Sails Cancret~ Masonry Steel

Mathew-Tupaz Associates April 25, 1979

Job No.: 1,og No. : Page 2

1392-00 4208

6. Foundation engineering analysis of the site considering

the proposed development, and preparation of this report.

SITE DESCRIPTION

'l'he site encompasses 2.24 acres of land located on the north

west corner of the intersection of Temple Avenue and 19th Street.

Present development includes several small commercial complexes

and storage garages. The topography is manifested by a south

westerly trending ravine that past grading has filled to create

the present relatively level topography.

The site and topography are further illustrated on the base map

of the accompanying Geologic Map.

SITE DEVELOPMENT

We understand that for this site, structures with partially under

ground garages will probably be built. These structures will have

footings founded at depth ranging from three to ten feet below

street surface elevation. Our calculations for ground compaction,

bearing capacities and settlements analyses are based on these

assumptions.

STRUCTURAL CONSIDERATIONS

Based on the proposed development, we anticipate column loads will

range from approximately 60 kips to 200 kips, and continuous foot-

ing loads will be in the order of 3.5 kips per lineal foot.

SOIL CONDI'l'IONS

Fill

A large amount of fill and debris was encountered underlying the

. central portion of the site as shown on the accompanying Geologic



Job No.: Log No.: Page 3

1392-00 4208

Map. The fill is in loose condition and extends to a maximwn

depth of approximately 20 feet below the existing ground surface.

Natural Ground

The natural ground profile to the depth explored consists of

brown and orange brown, medium sand and slightly clayey sand.

The natural ground is in moist and dense condition.

Groundwater and Caving

No groundwater was encountered during our exploration. Extensive

caving occurred where construction debris was encountered.

LABORATORY TESTING

Classification

Soils were classified visually according to the unified Soil

Classification System. Unit weight and moisture determinations

were performed for each undisturbed sample. Results of density

and moisture determinations, together with classification, are

shown on the Logs of Borings included in this report.

Laboratory Standard for Typical Soils

The maximwn density and optimum moisture content were deter

mined for tho major upper soil type encountered in the borings.

The laboratory standard used was ~STM:D-1557-70, the five-layer

method. Moisture-density relationships obtained for this soil

is shown on the attached soils engineering data sheet.

Expansiveness

An expansion test was performed on a typical sample of the natural

ground. The test was conducted in accordance with U.B.C. Standard




1392-00 4208

29-2. The test results indicate an expansion index of 2.

Direct Shear Tests

In order to determine the shearing strength of the on-site soils,

direct shear tests were performed on representative undisturbed

samples of the natural ground. To simulate possible adverse

field conditions, the sample was saturated prior to shearing.

Graphic summaries of the ultimate shearing values obtained in

our tests are attached.

Geologic Setting and Seismicity

Geology of significance comprises sedimentary deposits of the Lake

wood formation of late Pleistocene age, and the underlying San

Pedro formation, of early Pleistocene age. Locally, the Lakewood

consists, chiefly, of moderately dense, interbedded, gray-brown

and orange-brown silts, fine-medium sands and clays, and extends

to an average depth of some 150 feet. The San Pedro consists,

chiefly, of moderately dense, gray-brown, soft (in the geology

sense), siltstone and sandstone with gravel lenses, and extends

to an average depth of some 700 feet. In turn, older sedimentary

rocks then extend down to "basement" rock at a depth of some

14,000 feet.

Structural geology of significance comprises the Cherry Hill

branch of the broader Newport-Inglewood fault trend located north-.

northeast of the site as shown on the accompanying Geologic Map,

and the more distant Whittier, Santa Monica/Sierra Madre, Elsinore

and San Jacinto/San Andreas systems at respective locations of

approximately 18 miles to the northeast, 25 miles to the north,

30 miles to the east and 50 miles to the northeast. These zones

have been defined with reasonable accuracy by a combination of sur

face exposure, and subsurface water and oil well data.



Job No. : Log No.: Page 5

1392-00 4208

These geologic features are further illustrated on the accom

panying Regional Geology Map.

Because the subject property is located in the proximity of the

Newport-Inglewood Fault, Cherry Hill branch, it is included with

in the Alguist Priolo Special Studies Zone as designated by the

State of California. Trenching is necessary in such zones to de

termine if a fault trace is present. We have done such trenching

as part of our investigation. The trenching revealed the absence

of surficial fault tra ~es within the subject property.

Geologic Effects

It is considered probable that the site will experience ground

shaking from earthquake activity associated with the aforementiqned

active fault zones, generally defined as faults along which known

movement has occurred sometime during the last 10,000 years. A

perspective of the more significant activity on these systems in

historic time is shown on the accompanying Fault and Earthquake

Map.

Earthquake events postulated and adopted for their most probable

significance to the site during the next forty years include:

(a) An earthquake of magnitude 6.5 = at depth on the Newport

Inglewood zone, ie. the largest recorded earthquake is the Long

Beach earthquake of magnitude 6.3 in 1933, (b) an earthquake of

similar magnitude on the Whittier zone, or (c) of magnitude 8 = on the San Jacinto/San Andreas system. Evaluation of these events

with respect to the geology indicates the following data to be

applic<J.ble:




Postulated Earthquake

Probable Ground Acceleration at Site

a) Newport-Inglewood zone

b) Whittier zone

c) San Jacinto/San Andreas system

Peak 60% Peak

0.34g*

0.16g

0.12g

0.20g

O.lOg

0.07g

1392-00 4208

Probable Duration At 60% Peak

4 - 6 secs.

6 - 8 secs.

14 - 18 secs.

* A higher peak acceleration is possible from an event on the

Newport-Inglewood zone, but the related higher acceleration would

only be of 1-2 seconds in anticipated duration. Hence, to include

a higher value of such short duration would simply askew the data

from use in practical design of the proposed structures.


Mathew-Tupaz Associates l\.pril 25, 1979

CONCLUSIONS AND RECOMMENDATIONS

General


1392-00 4208

Proposed condominium development at the subject property is

considered feasible from a geologic and soils engineering

standpoint, provided that the following more specific con

clusions and recommendations are adhered to:

1. Seismicity

There was no surficial evidence f6und to indicate the pre

sence of a surfical active fault trace within the site.

The ground acceleration value at 60% of the probable peak

value is considered to be a practical value for use in pre

liminary design of wood frame structures such as proposed

and, on this basis, a postulated ground acceleration value

of 0.20g should be adopted for use.

2. Site Clearance

Existing debris, fill, vegetation, and other unsuitable mat

erial should be stripped and removed from the site. When

roots and other debris are removed, the on-site soils are

suitable for use in a certified, compacted fill.

3. Grading

l\.fter site clearance the natural ground should be scarified

to a depth of eight inches, brought to proper moisture

content, and compacted to a minimum of 90% of the laboratory

standard (ASTM:D-1557-70).

Fill soils should be placed in six to eight inch lifts,

brought to proper moisture content, and compacted to a



Job No. : Log No.: Page 8

1392-00 4208

minimum of 90% of the laboratory standard, as noted above.

Fills should be tested and inspected by the soils engineers.

Pieces of concrete or bricks may be incorporated in the fill

providing they are limited to pieces six to eight inches in

diameter, and compacted together with enough soil so that a

firm, well compacted fill is obtained. Larger pieces may

also be emplaced in the fill according to the following

method.

a. They should be buried at least four feet from finished

subgrade.

b. They should be laid out in windrows, with adequate

working space in between for equipment to compact the

soils between wi.ndrows.

c. Special attention, including continuous inspection

should be given to testing and compacting the soils at

windrow elevations. Sandier soils should be used between

the windrow.

4. Foundation Design

Based on the site preparation and building criteria discussed

above, foundation design recommendations are as follows:

a. Soil Bearing Pressures

Footings founded in compacted fill or natural ground may

be designed to impose a soil bearing pressure of 3000

lbs/square foot for spread footings and 2500 lbs/square

foot for continuous footings.

The recommended soil bearing pressures may be increased

by one-third in designing for wind and seismic loads.



b. Footings


1392-00 4208

Footings should be founded at a minimum depth of 18

inches below lowest adjacent grade. No reinforcement

is required in continuous footings to resist expansion

forces.

Foundations designed as recommended above should undergo

differential settlements of less than one-fourth inch.

c. Slabs

Slabs may be poured directly on subgrade. Slab thickness

and reinforcing should conform to the anticipated use and

loading of the slab. Where moisture sensitive floor cov

erings are planned, the slabs should be underlain by a

six mil visqueen moisture barrier with one inch of sand

between the concrete and the visqueen to aid in curing.

d. Inspection

Footing excavations should be inspected prior to pouring

to assure they are founded in proper bearing materials

and are at proper moisture content. Footings should be

poured as soon as possible after excavations are com

pleted; the excavations should be protected against be

coming over-wet or saturated.

5. Lateral Pressures

1. Temporary Loads

Unshared construction cut should be laid back at a gra

dient of one horizontal to one vertical.



Job NO. : Log No. : Page 10

1392-00 4208

For the design of cantilevered shoring, it may be assumed

that the soils and existing fill will exert a lateral

pressure equal to 20 lbs. per cubic foot, equivalent

fluid pressure. Unless street traffic is kept back at

least 10 feet from the eastern shoring, an additional

uniform lateral pressure of 80 lbs/square foot should

be added to the recorrunended temporary active pressure.

The allowable lateral bearing value, passive resistance,

of tho soils below the bottom of the excavation may be

asswncd to be 600 lbs/square foot per foot of depth,

up to a maximum of 6,000 lbs/square foot.

In order to develop the recommended lateral value, pro

visions should be taken to assure firm contact between

the shoring and the retained material.

2. Permanent r,oads

The active pressure for cantilever conditions is 35

lbs/cubic foot, equivalent fluid pressure. For re

strained conditions, the recommended active pressure

shou.ld be increased by a uniform pressure equal to

SH lbs/square foot as shown below:

T H

lot-- 3 SH -l8H j+-

Restrained condition



6. Passive Pressures


1392-00 4208

A lateral bearing value of 300 pounds per cubic foot and

coefficient of friction of 0.45 may be assumed provided

foundations are poured tight against undisturbed soils.

7. Backfills

The existing materials can be compacted readily by the

usual methods.

We will be happy to meet with you, your architects, or your

engineer to obtain the best use of information offered during

this investigation.

Very truly yours,

ROBERT S ONE & ASSO

Enclosures: Old Topography Map Cross Sections Regional Geology Map Fault & Earthquake Map Log of Borings Lab Test Data Geologic Map (Pocket)

Chris Langdon

7.."~~

Distribution: (6) Mathew-Tupaz Associates


SELECTED REFERENCES

Culifornia D8partment of Water Resources, 1968, Sea Wuter Intrusion Balsa-Sunset area, Orange County: Bulletin No. 63-2.

, 1966, Santa Anu Gap Salinity Barrier, Bulletin No. 147-1.

, 1961, Planned Utilization of the f; round~\~v a_t_e_r~B~a-s~i-n-s--o~f~t~h·-e~C~o-a---s~ta 1 P 1 a in of Los Ange le s County ; Appendix A - Ground Water Geology: Bulletin No. 104.

California Division of Mines and Geology, 1974, Newport-Inglewood Structural Zone, Southern California: Special Report 114.

Californiu Division of Oil and Gas, 1968, Long Beach Oil Field; Sununary of Operations, Californiu Oil Fields, Vol. 54, No. 1.

Poland, J.E. et.al., 1956, Grourid Water Geology of the Coastal Zone Long Beach - Santa Ana Areu 1 Culifornia: Geological Survey Water Supply Paper 1109.

Seed, H.13., et.al., 1975, Relationships Between Maximum Acceleration, Muximum Velocity, Distance from Source and Local Site Conditions for Moderately Strong Eurthquakes: Eurthquake Engineering Research Center, University of California.

Seed, H.B., et.al., 1968, Characteristics of Rock Motions During Earthquakes: Journal of Gootechnical Engineering, American Society of Civil Enginers, Vol. 195, No. SMS.

Woodward-McNeil & Associates, 1974, Seismic Safety Element Report, City of Long Beach, California.

Woodward-~1cNoil & Associates, 1974, Seismic Safety Element Report, City of Signal Hill, California.

Yerkes, T.H., et.al., 1965, Geology of tho Los Angelos Basin Californiaan Introduction: Geological Survey Professional Paper 420-A.


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-1.li!lf.I'...~ ~- 1:· A .- .. ,.. ,:--.... -- ~\.l; .. .. •. . - '- - , ... ___ .. ····•_· ---..... ._ -·_8~~-25~ , .. >·~/ '(/' ~, '•

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>-3 >-3 0 oc hj O:J 0 G1 t-< $1 ~ hj t'l ~ Ul K

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~tlail~~~~rw~· r:~-rnJ'.~\} \' : 'P ~ N .,'P. :'ii 1C:0ro:::O

· I' 1 • :;i m' < ~

[fl

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~

a /: ) ri1(j)· ~-.' I ~.~ .~ .,~ -.1>1.~----1 (/J ~

:--· I '4 I • '1"-'·\· ' I • \) )> c... .,... · ·' I~'' . . '-7216·20-12";i='f(/)p, \ :r.-'

h"-1'-i..''iJ_ll:-·_-- 0 · --.1 I ~:N,JAMll-JAMOYLE :--l z''\ Ci1/' 1 I ...... i,., ):; ~ -, 35 RE:SERVOI R I ' ' -) ' ' .o/u UJU\0:' 11SIGNALH1LL 'i :-i Cj r. - ·-l J N..... t..I F ~· :

rri o""' · ... -... ~·' ,.... J l t ... 1 (""r I ""-

{5 :-; '-'. Ot :-.· . ,---,····'-., 'I ),.,_,._,c,,;: •.. ,; •• _,..__. I ~ .. • ~ ~' ')..>-'" '

0 ;n -:::;· .. - '\ -~- ·-·--··:~7 ··-·----,<-':/:----\] ., . ', ' ' ',

\. ! '. , ~ \ r- ........ ~t_~-"J'" , .• ·. I ...

,.-: 0 en •' ·-,- -' 1., ..__

t:l ~ J ~ \ 'I I I_ ... _ i ' ' F·_. ;/,; ~' ' I . I ' ' I .~. . ·7' l . . rn ~ ~-. > ' ' ~ ..:;.. !i I "' ,r

,~~ :, : ' :,''' . l 7...:;.... '' ·1:·" ·-' j ·'\ ·-..,, I\ -·- ~ • ~ '._.,- .; ~11, , ... ~" \ "'•,, ·~•I.ET-~ ' i ..... - , •..,_,

:rEr{PL.E·:;,::,,::,;_::.660' · ... -· ...... 'J ..... :\ .. -j"--:·::/'l_VENU~

·- -7'·-··---- -.::.:·--·· 1·--- ,.v.- \. -. ~«l- < :· ..... -.·: .. ·,, ·: .. .. l,, ; ...... :r-',-.;-·7.::.::~L:'.·,,~--c· -r·--... -·./'. ·- : ! i )., , ' . . : . ' ( '.' ~ . I . :' i ( ' 7' - i ! .. - - .. . • I~ , ' I · ... - ·1 I ' ' !' · .... · ' \ ~ ,·-·c..~ 1i I '1 1~\. ·,_ " _ _,· (, ·, , , I ( ,' ..... -\.. .,/ ....... -·•---'------: ·;-. , Ill J : er •"·'-'' ,.,, ,• I· •·, r - 1 .. ,., .r·, -- ,. · • ~"- · · 1 , .. ,. •• I L....... I • . I

1-' . ... -: . I , i • · I I

i ' i ~~--\ \ T. 1 ': l

' '

. I'\"'' • ;1' . L ! ' ' --------1 -., I

i -. ·' l .. ,.

I .. ! :

ROBERT STONE & ASSOCIATES INGINrlRIHG GIOl.OG"t SOJl. MICHANl<;S fOUNDATIOH STUDll$

I i ... . I , l .. . I '

April 25, 1979 JOa NUM•l•i 1392-00 D.t.t I:

D•AWH l'r': K.E. SCA.Lli 1 11 ~100'1 .. ,,llOYID ITt J.V.

•tVISllp:

A

150.

100.

·- •......-aam":x™~

;E SUBJECT PROPERTY

I ..,Existing Ground Profile

-~~n~Fi

0lfl

1 _

Approximate Profile ~ Old Canyon Bottom

A'

150 --100

CROSS SECTION A-A'

ROBERT STONE & ASSOCIATES, INC. INC.~Ni[ll:-IN& GIOlOGY SOLL M [CH.A:N:IC-'5 f OUH 0At10 N S 11.J 0 IE S

1392-00 April 25, 1979

HAl>,l" = 10 0 I

DRAWN ll': K - 'R

Iii I VIS ID:

B

SUBJECT PROPERTY

150 -

l""Existing Ground Profile

.µ Q) OJ B' H

& +' Ul

Q) M

~ Q)

8

1 o o . ________ Existin.2__ Fill __ -?-?

'(_Approximate Profile of

_100

Old Canyon Bottom

CROSS SECTION B-B'

ROBERT STONE & ASSOCIATES, INC. fNG IN [ E:R JN G GE 0 l 0 GY ~01 L M E-C-HANIC5 rouN 0 AT tON 51UDJIE5

JOI NUM!lll~ 1392-00 I "4 "' April 25, 1979

SCAl:E~ l "= lQ Q 11 D!lt AWN I Y: K. E ~ II! ('ti l.SE:D:

Qa Quaternary Deposits

San.ta Ana -II-

Ts Tertiary Sedimentary Rocks

Mb Basement Rocks

""' Active Fault System

lin-15mi

REGIONAL GEOLOGY MAP

ROBERT STONE & ASSOCIATES INGINIEllNG GIOLOGY SOIL MICHANICS fOUNDATION STUDllS

JOI NUMllll1 1392-00 DATI: April 25, 1979

SCALl:l 11= 15

0 6-6.9

• 7- 7.9

0 8-8.5

Magnitude (Richter scale), Earthquakes of magnitude G and over since 1852

Active Fault system

a::.47

'----~#.~~~---Barbara Q

19251 Santa

Los

1968 ...- El Centro

# 1942" 1915"~ -, _____ ~/ 1in-75mi San Diego

FAULT & EARTHQUAKE MAP

ROBERT STONE & ASSOCIATES 501L MICHAHl(S fOUN.DATIOH :iTUDlll

1392-00 DAfl• April 25, 1979

KUt)tK I ::, I UNI: & A::i::iULIAI t::i, INL.

SUB-SURFACE DATA

PROJECT: Signal Hill Condominium - 19th Street and Temple Avenue ·-----------------------·---------------------------------------·----

DESCRIPTION SOIL TESTS

Log No. Tl Location See Geologic Map Date 4/10/79

-o -r----t---J~--t-+---+---+---'""'-~c.·.i.l ~~ ,_,_ c.re,.d.);i.i:;,i_ct,...µ_i;:;;ttnnen ts noted •

1

NATURAL GROUND: . Rust-brown, moist, firm, medium to coarse clayey SAND with local concentrations of brown sandy CLAY. Massive.

-. .

5-----

10-. . --

15-- ... . -

Log No. T2 -o m _

--

5-----

10-

" .. .. ·- - ' . ~-··

---

15-

--

---------------·--·----t----------1 Gray-brown, moist, dense, slightly clayey, micaceous fine SAND (non-cemented) . Massive:--

Total depth 16.5'. No groundwater . No caving.

Location See Geologic Map

TOPSOIL: Dark-brown, moist, loose sandy CI;J\Y with roots. •-'-~···"" ,.,,., ... NATURAL GROUND: Rust-brown and Gray, dense, slightly clayey, micaceous fine SAND (non-cemented) . Massive with discontinuous interbeds (lenticular) and local concentration,; of brown clayei SAND.

-· ""--:·~

Total depth 11' NO groundwater. No caving.

Dote 4/10/79

~M••

ROBERT STOt'~ E & ASSOCIATES, INC.

SUB-SURFACE DATA PROJ ECT: _______ ?_isna ~-~-~-~.!:_ __ <:_?!1~omi n i um ---~-?-~~--~-~~-':.':! __ an~:;imr_~.=_-~':_e~-1::.~---Met~od of Ori I ling: ___ J?.tiock}:).£§' ____ .?..1..'.'._..!'_1='_<:::!'~.!i------- Logged by __ _!.<_:!.:.• _________ Job No .• J.JJ!f..:-_Q_Q ______ ~


Log No. T3 Location See Geologic Map Date 4/10/79

·O - TOPSOIL: Brown to dark brown, moist,

loose silty CLAY with roots. ---· --- ·--- -·· ----~'·- ~~··~ ··~ ·-·-- NATURAI, GROUND: Red-brown and Orange·•

brown, moist, firm clayey SAND. - Massive with discontinous inter beds 5- (lenticular) of gray-brown, micaceous - fine silty SAND (non-cemented) . -----

10-~· -~····~•T --

Total Depth 10.5' - No groundwater - No caving - .

15-..

--


- FILL: Brown, moist / loose, clayez SAND with brick and cement fragments - caving noted. -

-5 ----"'

~--·· , ___ '"' - moist NATURAL GROUND: Orange-brown, 10 - firm·;- clazez SAND. Massive. ---

- Total Depth 13' 15 - No groundwater

- Caving as noted.

----··· ····-·----·

. ROBERT STONE & ASSOCIATES, INC.

SUB-SURFACE DATA PROJ ECT: _______ _s.i_g n a l U.i..ll._£Condomin i um - l_~_th....§_t;f".§_~.:.L_<;;.!li._.§!.!PJ.~8-v-=..r:_y_~----------

Method of Drilling: ___ .B=.:khue.. ___ 2..4~:- f,iJ(;l;et ---- Loggod by ___ ..1$_._f.., _________ Job No. ___ ],J_~_?.:-_Q_Q _____ _



-o . FILL: Brown, moist, loose clay~.Y

SAND with abundant (30%) brick, - concrete and other miscellaneous . debris noted. Caving. -

5· ----

10-. . . .

.. 15-

- .. --~~- ··--··~-· ·-- VTotal Depth 18. 5'. No qroundwater

Cavina as noted. ,,, Log No. Location See Geologic Map Date 4/10/79

·O

- FILL: Dark-brown, moist, loose -,·-··-

and clax:ey_ with - modi um SAND SAND pipe, gfass, old engine parts and

- other miscellaneous debris noted. - Slight caving.

5 ·---- . - -· •.. - Orange-brown,moist NATURAL GROUND: ,_ dense, micaceous fine SAND (non-- cemented). Locally-slightly clayey

;o

- Massive.

--

5- ··~·~'*'~ ---·-lff Total Depth 10' No Water

~ - Caving as Noted - -·-, ·~·--·-·--····- ·--

-o ----

5-----

10---

1<ubt1< r SlUNc & A~~UCIAI t:::>, INC.

SUB-SURFACE DATA

PROJECT: •• _

Log No. T7

DE:SCRIPTION


FILL: Brown and Red-brown, moist, loose SAND and sandy CLAY with abundant brick, glass and other miscellaneous debris noted. Excessive caving.

son. TESTS

Date 4/10/79

-"' =-=l==='====·I=· =.r ·'""·""· ... =·-==i=--= .. .cJ· =====~~=·"'· -""····=---======·=··-=-=====9==·-.. =._=-.. ===-="·~ Total Depth - 13' - ·. No groundwater, extensive

15- Caving as noted. --

Log No. TS Location see Geologic Map Date 4/10/79 ·O

- FILL: Brown, moist, loose ~layel:'_

- SAND and CLAY with abundant brick, concrete, pipe and other miscellane-

- debris noted. ous - Extensive caving.

5-----

10-----

15- - -.~-~

Total Depth 17' No groundwater . Extensive caving noted. as - - '

I - ...

l<UlH:l<I ~lONI: & A::i::iUl.IAI t:::., ll"\,jl......

SUl3-SURFACE DATA PROJECT: Sis.nal Hill Condominium - 19th Street and Temple Avenue

---·~---- ------~ ....... ~--------------+~---------------------Method of Drlllinq: ___ £l_~_skl:_9_r;: ____ ?,!~-~2.S:_~_!O~------ Logged by _ _IS_._1?_c ___________ Job No.JJ.2-~:-0_Q _____ _

Log No. '1'9

-o -. --

5-----

10--i-- -·- - -----

15-

--

7

Log No. TlO

-o ----

5-----

10----

DESCRIPTION

Location Seo Geologic Map

FILL: Gray-brown, moist, loose --··-

with abundant brick, ~~ndy CLAY concrete", wood and other miscellaneou> debris noted. Caving noted.

-.. --~····-.. ,.. ·------

NA'l'URAL GROUND: Red-brown and Gray, mois-t, firm, .s:_lay_~ with discon-SJ\ND tinuous interbeds llcnticulaJ'.") of clcnse, rnicaceous, fine SAND.

-~.~ --· - -· ~.,,, .. -· ·" ,,.

Total Depth 18' No groundwater Caving as noted.


FILL: Brown and Gray-green, moi.st, loose sandy CLAY with abundant brick, concrc'te andother miscellaneous debris noted. Very large cement block noted (approximately 3'x4'x3'). Caving noted.

15

-

/

Totai Depth 16-· Caving as noted.

-F=-f,~=t~l===l==~=l=='==i"'

No ground water

.

SOIL TESTS

Date 4/11/79

·.

Date 4/11/79

·O ----

5-

----

10---

--

15-

-

0

---

5-----

:o--

--

15-

--

R()bcR r STONc & A::,::,o<....IAf !::S, INC.

SUB-SURFACE DATA

Me!hod of Ori lling; ---..B.akho;:: ___ 2.!l.:'-....Ul.l.dct.-------- Logged by ---..K.-E._ ________ Job No . ..Ll.9.2.::.ll!L-------

Log No.

Log No.

--··

-·

DESCRIPTION

Tll Location See Geologic Map Date 4/11-79

FILL: Brown and gray-green, moist, loose .si~n~ CLAY with brick, cement, metal and other-miscellaneous debris. Caving.

··-~ •··•·n·~·-•- ..

f --,~~-.. Total Depth 16' No groundwater Caving as noted.

T12 Location See Geologic Map Date 4/11/79

TOPSOIL: Brown, moist, loose sandy " CLAY. ·--+---·---- ·~~~,~------------------~-!---------+

--

NATURAI, GROUND: Rust to yellow-browr moist, dense clayey SAND with interbeds of gray micaceous silty SAND (non-cemented)

Total Depth 12' No groundwater. No caving.

-.,--------------------------------~.~~--···---~----- .. ----~·~-

RUBl:RT SlONE & A!:>!:>Ul.IAlt::i, INl..

Sl:JB-SURFACE DATA

PROJECT:

Method of Drilling; ___ f!.~ckhoo 2 4" -~~~--------Logged by _ _is_._K, _________ Job No. ___ ~J.2~_:_QQ._ ____ _

DESCRIPTION

Log No. Tl3 Location See Geologic Map Cate 4/11/79

-o - FILL: Brown to Rust Brown, moist,

loose ~~!1.9.Y CLAY with wood and other - miscellaneous debris. --

5---

.. -···- ~.,,-

. NA'l'URAL GROUND: Orange-brown, moist, dense;-· micaceous fine SAND (non-

10- cemented). ----

15 .. -··- ,. ··- ·-.. . ., -·-·····-·r.~ . .. ••• ,:::;!::.,.....--... . .

- Total Depth 15'

- No groundwater l'-T ,...,_ {"""! ;-\ ~,,. .. t"'I ("1

Log No. Tl4 Location see Geologic Map Date 4/11/79 ·O

- FILL: Brown to Rust Brown, moist, ,. sandy CLZ\Y with abundant brick,

cement and other miscellaneous debris. - Caving. -

5-----

10-----

15 ;!.,;;...-~- -- ·- .

- Total Depth 15' No groundwater - Caving as noted.

·-· -~·- ·-----~-~ ..

KUt.JLKI :.:i I UNt & A:.:J0Ul_IAI t::.:i, 11"11....

·O ----

5-

----

0-.

-

SUB-SURFACE DATA PROJECT:-= ___ ..s.i.qna J Hj J J candomi ni 11m c:.-J..9tb Stroct._.il.ruLXemp.la...AJl.awJe __ _

Method of Drilling; __ .!l,~ck~~--1.1:... Bucket _ Logged by __ K _._!>_o __________ Job No .•• l~-~-~::Q_Q_ ___ =_

Log No. T15

DESCRIPTION


FILL: Brown, moist, loose cl~ SAND-with wood, metal, pipe-and other miscellaneous debris.

SOIL TESTS

Date 4/11/79

-l===l===ll==f==J==="°='·o•- -- -'-"-----"'""-----"''·--• ___ occo~c·.·c,c_-__ -____ _c---------------_-__ -__ ooc--=o=c-"-"'' ==•-==!=======-===l .

15-

--

Log No. Tl6 0 ----

5------- -· .,, .. ~~

o---

-- ---

5-

--

NA'l'URAI, GROUND: Gray, moist, dense micaceous fine ·SAND (non-cemented)

Total Depth 17' No groundwater. No caving.


PILL: Gray and Dark Brown,. moist, loose sandy CL_b_'i,'_ with wood, wire and other miscellaneous debris. Water seepage at 6 ' • Locally oil saturate<

-··-··· ... N •• ,,~··-- ----· NATURAL GROUND: Gray, moist, dense, -.---· fine silty micaceous SAND.

.•. '"' ··- --"""''··· ----· TO till Depth 13' Water as noted. No caving.

Date 4/11/79

-

KUbtt< I ;:, I UNt & A;:,;:,uLIAI 1:::,, INL.

SUEj-SURFACE DATA PROJECT: _____ Signal !Jill Condominium - 19th Street and •remple Avenue

Me1~o~ of Drilling;~"'- 24" Bucket K E 1392-00 Logged by-----·_:___ __ Job No·---·----


Log No. Tl7 Location See Geologic Map D 4/11/79

ate

0 . TOPSOIL: Dark Brown, moist, st:i.tt

·-f\ CLAY w-ith roots. --~-- - --

- NATURAL'GROUND: Red-brown to Oranqe· moJ.st-,dense, ' .

brown, clayey E;}\.ND w:i. t - inter beds of micaceous fine SAND -- --5- (non-cemented) . ----

10- ''"~---··· ........... ';'. ... ::.:.'.:.-·---~ - ... ·--

Total Depth 10' -No groundwater. - No caving.

-

-15-

--

Log No. Tl8 Location See Geologic Map Date 4/11/79 0

- FILL: Brown 1 moist, loose cla;tez SAND with cement blocks. - ----

--

5 •• ·--~'•·•-w.·-- '···- ·~·····~TT"

- NATURAL GROUND: Brown to Orange-brown' mo:i.st~-dense micaceous,

- medium SAND. --

0---- .

-15 --~- r.~--~~•··••-·•·- - _,,

- Total Qepth 15 i • No groundwater. - No Ci1V1-ng.

·~·· --

ROBtRT STONE & AS!:>OCIATi:S, INC.

SUB-SURFACE DATA

PROJECT: Signal Hill ondorninium - 19_J;;h Street and Temple A_v_e_.n_u_e ____ _

Method ol Dr111;n9: ---B,;ickhoe_--2._4" Bucket ___ Logged by _ _l5_,_~_, ______ Job No. 1392-00


Log No. Tl9 Location See Geologic Map Date 4/11/79

0 - FILL: Brown to Rust-brown, moist,

loose su.ndy CLl\Y with wood and other . miscellaneous-debris. Some caving.

-5-----

10----- •.

15-

- .• - ___ .,, .•.. .. , .• --· . -· - ;I' Total Depth 18'. No groundwater.

r'---.T,...; nrT ;:i e ............ "'-',,..,.,.::i

# Log No. T20 Location See Geologic Map Date 4/11/79

·O

--t---t----}., _ _:T=O=P=S=O==T=L~:__(D~a~r~ki__b:::_:::r~o~w~n~,:_:m~o::_:::i~st, stiff -t---+---1------t (' T >. V . ···-···--· ·-·-·-----+---'--------' -

--

5-----

10-

--

-15-

--

.

NATURAL GROUND: Orange to Rust-br-own, moist, -ci'ense, micaceous clayey SAJiQ. with interbeds of micaceous fine SAND.

··-··· - ... __ ··-· ·····----...... , .. -.-- .. ··········-==-=~=-=·=· ======!==·=-=====! Total Depth 13'. No groundwater

No caving.

l\VOC::KI ;)IUNt & A00UL1Alt.) 1 INL.

SUS-SURFACE DATA PROJECT: Siqnu.l ll:iJl.. Condominium - l_~ S1;:E,:_~ _ _':,!'d Temple Avenue ____ ~

Me!hod of Drilling: _J.}ll.QkhQ.@ ___ ?_q" Bucket ____ Logged by ___ Ji.,_s;_~--------Job No._U_92,_-~o_o ___ _



-o . FILL: Brown, moist, loose cla.YEJ:

SANDwith wire, glass and other . miscellaneous debris •

.

. 5---

'

--

10---

. , __ .. -· .. --·- .. --····""- .. ... ·~·----··-· ····--c:. . ... ·-·-.. ·-- . ~ .. - -~·· - .

Total - Depth 13' .

15-No groundwater. .. No caving.

--

Log No. Location Date ·O

----

5-----

10-

----

15--. ---

0

Robert Stone & Associates, Inc.

S S R CE D T Trench A· UB· U FA A A log No:------------- ------

Signal Hill Condominiu~ - 19th Street and Temple Avenue PROJECT' .• - ••• - •• - -- ••••••••• --- ---------------.-----------·· -- -- •• -- - • - ••••••• ---- -------------- ------ -------- ····---- ------·· - .

. . Backhoe, 24" Bucket ·· C.L. · 1392-00 Method of D<11i1ng, ••••••••••••••• ___ • ,. .. _________ • _________ ..•• loggod by •••• -----· ......... Job No .. -------····.----------·

G'ound El t' . 111' . See Geologic Map 4/16/79 ev(J IQ(1. ·- -- • --- • "r--- --- l ocot1on --- - --- - ~------ -~ &M~ ~ ---- - - • - - -- ---- - -- --- ------~---Dote Observed; -~---~~-M••• ••r-

SC

SM

Oe!.cripHon

NATURAL GROUND Brown to Orange Brown, moist, stiff medium Clayey Sand w/discontinuous (lenticular) interbeds or local concentrations of gray-green, fine, micaccous, (non-cemented) sand. Faint joints noted @

0 + 30' -N32W 80°N 0 + 40' -NlOW 7505

Gray-Green, moist, dense (non-cemente~ ~icaceous Sand. Slight caving noted.

(Lakewood fm.)

End trench 8' No Water Note - Above log representative for entire 60' length of trench. 0+00 taken at edge of sidewalk (East of lot)

----------~---····- --·------~-· ·--~-·-··"" .. ~- ··-··-·-- - ·--·--·

~ ""'

5

0

5

·Robert Stone & Associates, Inc. SUB-SURFACE DATA Trench B Log No: ----·. ·····-·······

PROJECT : . - - • _ '.3_ ~ 5! '.; ~-~ .. '.~ ~ -~ ~ --~ ~ '.~ t)_?'." ~ rl-~ ~';:- :: .. ~-~ -~ ~ .. ~-~ ~ ':'_':'_~. _ ~. r::: __ '.'.':'.':!?_ ~-'=- _Z:_"_ :_ ~ ~-~ ___ ....... ---...... -. Backhoe 24'' Bucket · C.L. 1392-00

Met hod of Drilling: ••• - •••••••••••••••• - ----- _ ••••••••••••••• ____ Logged by. --- -- ___ - ---- -____ Job No ....... ----- • •• ··- -- ---- -

. 111' . See Geologic Map 4/16/79 Ground Elevollon. __ --- __ -------- __ L ocot1on ·-- •• -~-- ------ ______ -~-- ~ ~ ______ ••• --------~-~-----Dote Observ@d. _____ ~ ~~~~---···

Oe5cription

NATURAL GROUND

Brown to Orange Brown, moist, firm, medium, micaceous silty sand w/local concentrations of clayey sand.

(Lakewood fm.)

End trench 8' No water Note: Above log representative for entire 50' length of trench. 0+00 taken @ east end of trench.

/. ""'

i==t~=1~=1==~====1~==11==~~~======--=-~-=-=-~~~~=========J: .. =. ===========1

--~-··' ···------·------------~---· -----·· ------ -· .. -·

5

10

15

Robert Stone & Associates, Inc. Trench c ·

SUB· SURFACE DATA log No:·------------ .. .----Signal Hill Condominium - 19th Street and Temple Avenue

PROJECT' . --- - - - .•.. - - - --- .•• - ---- --- - --- -- -- -- ----.. -· - --- - -- --------- - - ------- ----- - --- -- -- - ---. .. ----- --- -- --- - - - --- -- - -- - --- - ·

Method of D di ling, _!'l_~_'?!':!"J.?.1" •• ?_~_''. __ ]3_\l_C:!';~_1; _____ _____ .... Logged by •• f -"-~-'. .. --- ---- .Job No. ---~ ~-~-~:: Q_Q ___ --- --- -

G•ound Elevation' ..... ~-~-~ •••••• - L oeotion ---- -~_:::_ __ ~:_'?_~_:::'.J_~_': .. 1•1.':.?. ___ ---· ---- __ -----.. Dote Ob<erved: ~!~ ~!_-~? ____ _

SC

De:!'.c:ription

NATURAL G'l.OUND Brown to reddish brown,moist stift, medium clayey ?a~q. Becomes slightly clayey w/depth. Joint noted @ 0+55 NlOW so 0 s. Poorly developed.

End trench 6' No water Note: Above log representative for trench between 0+00 to 1+00. At 1+00 above material is overlain by loose clayey sand and debris (FILL) . Fill thickens westward. Trench stopped @ 1+20 at which point fill is 6' thick.

/.""'

·Robert Stone & Associates, Inc.

SUB-SURFACE DATA Log No: ::::-.':'.':~~--:.'. ... __ P . Signal Hill Condominium - 19th Street and Temple Avenue

ROJE CT. , . - . - .• --- - ------- - --- - •• - -- ---- ----- - --- --- --- ---- --------------------- ---- - ---- - ••. ---- ..• ---- ............ - -----.- .... .

. . Backhoe 24'' Bucket· C.L. 1392-00 Method of D" llm g' •••••••••••• -- ••• --· •••••••••• ··--- _____ •••••• loggod by_ ••••••••••• -- __ ---Job No . ... ---- ---- --·· - . --- --- -

G'ound Elovotion' 116 ~oeof See Geologic Map 4/17/79 · · - ~-- - ~ -~~ ~- •• - · - ion •••••••• ~-------~~-~~ --~a~• - ---- ---- ~ ~--~--------" •• Date Ob!iierved: ••••••••••••••••

De5.i::ription

FILL: Brown, slightly clayey sand and fine sand. r,oose w/abundant wood, metal, pipe, brick and other miscellaneous debris. Locally oil soaked.

Fill extends to a depth corresponding to t.he followlng stationing. o+oo - 13' 0+10 - 10' 0+20 - 7' 0+50 - 8' 0+60 to 0+90 - 10' plus (unable to penetrate due to abundant debris}

0+90 - 6' 1+00 - 4'

NATURAL GROUND

Orange brown, moist, dense medium, silty sand and fi~~ sand.

~Trench deoth 3' beneath fill into natural m;terial. 100' in length, o+oo taken at east end of trench.

Robert Stone & Associates, Inc. T . . rtmch Section

SUB-SURFACE DATA E ' Log No: -----------··-···--PR . Signal Hill Condominium - 19th Street and Temple Avenue OJ EC T ........... _ ••.. _ ... ____________________________________________ • _ •• __ •••... __ .. ______ •.. ________ • _. __ •• ____ •• ______ •.. _. _

Mel hod of Drilling: ••• J?.<:::~.1:'.'?:': .. ?_~ _'_ --~~~?.J::-.~ !: ____________ logged by •• ~:.~.'. •••••••••. Job No ..• .:1: ~-~-~ :-:_ ~-Q ....... -- -

Ground Elevmion: ..... ~-~-~ ----- __ L o<otion . __ ~.':::_ -~-':'.)_~_':''.3.~-~--~'.~.fl .. __ . ------·--·----·-·Date Observed:--~(.~.'.!.?.~---

Desc:i-iption

rov1n, m e sand

Orange-brown, moist, dense medium sand and silty sand, massive.

Between 0+00 and 0+20 above material overlain by 4' ±of loose clayey sand fill w/debris .

•

Average trench depth 6' No \~ator

Trench 100' in length 0+00 taken at east end.

---------·--------··--- "· --·-···-· ... ,,. ____ --

5

10

15

zo

25

30

35

40

45


SUB-SURFACE DATA Log No: ........ L ..................... .

p ROJ E c r: ......................... Si.g.nal .... lli.ll.. . .C.andaminium ... ::: .... 19.th .. str.eet .... and . Temple .. A~.e.nue ................. .

Mot hod of Drilling, .. :1 ?.'.'. ..... El_IJt;:~et; _ l\.t,19':'.l:" .... ::: .... ll:?..':' .......... L<>gged by ........ ~ .... :r,. .. , ................ Job No .... l.::l.~.i.:-::00.

Grovnd Elovotiono ............................... Loco!ion .... .Sae. ... Geo.log.ic ... Map ........................................ Dote Ob<erved: .. !l/.lS.;.'..7..9 ...... .

97

90

3 2.3 90

6 6.9 89

----'---'···"·· -----

PESC:RIPTION

NATURAL GROUND: RGd-brown to yello brown, moist, dense, silty SAND interbedded with firm clayey SAND.

Total DGpth 23'. No groundwater. No caving.

5-

10-

15

za-

25-

-

30-

35-

40-

45-


SUB-SURFACE DATA Log No: ..... 2 .................. ,,., ____ _

p ROJ E c T: .. ------··---··------·-··S-ignal ... Hill...-Co:n.dorninium ... -~ .... l-\J-t.h ·-·S-tr.99.t, .. and---Temp l-@ ... Avenue ... --

Method of D,;1J;n9: .. J_B .. " ..... f '.)),gl::l_t .... l:'P-B.~:+. .... ::!'\9..\i' .......... lo.ggod by ... 1=,,.,.:f,._,,.,. .............. Job No. :.13 9 2- 0 0 ____ ,.,.,.,. _____ _

G'ound Elev.»; on: _____ ,,,., ___ ........ -------·· Loco1;on ............... Se.e ... Ge.alo.g.ic ... Map ................................ Dole Ob>e<ved: ... 4/18/..1.9 ..... .

ARTIFICIAL FILL: Brown, moist, loose cla~ey SAND with abundant (30%) br~ck, concrete and other miscellaneous debris.

Total Depth 12'. No groundwater. No caving. unable to drill through concrete.

t;n_i... _____ ,---~--L- .. ------- -------- ---- - - ------·------ -----··---------------------'---------

-

5--

10-

15-

zo -

25 -

30-

35-

40-

45


SUB-SURFACE DATA Log No: ......... 3 ........................ .

P ROJ E c T, .......................... Signal .... lli.l l .. Condominium ... ~ .... 1.9.t·h .. ·&"bl:'eet; ... .,.nd···'I'empJ: e·---Avenue------ .............. ·

Method cl D1illing: ...... l<J.!' .... F1.ight ... Augel7 .... m .. :Aoe.- .. .... Lo99od by .... B .•. L .................... fob No ..... l.39.2.,,-.0.0 ................. ..

Ground Elevation: ........................ ______ Lo«•tion ..... .S.ee .... Geologi.c ... l'i'lilP ........................................ Dote Ob•erved, ... !l;.'.1.8./.'.:Z.9 .... ..

SC

3 ~ l6 8.4

SM

15<'. 16 •.

97

99 ---

ARTIFICIAL FILL: Brown, moist, loose cr.iiyeys'l;ITn with abundant (30%) brick, concrete, and other miscellaneous debris.

caving

NATURAL GROUND: Rect~brown to Gray, moist, dense, micaceous siltz §~!'JD with discontinuous interbeds of clayey SAND and CLAY

Total Depth 23'. No groundwater. Some caving in fill below R.S.'

t,l"j_ ... ~-- ---·-·-- ---·-· -·-··-····--------·-·-

5-

10

zo

25

30

35

40

45


SUB-SURFACE DATA - 4· Log No: .......................... ., ...... ..

PROJECT: ..... ~-~9.1:1!':.1.-.... !.1J1.-J .... ~?-T1.Sl?)llJ_l).~.\J.\\1$ .... :7 ... ..lSth .... S.:tr.eet...and ... T.ernple .. Avenue _______ ........ ____ .......... ------"-

Mer hod of DrilVing: :l.~.'.'. ... Jlut:k.G.t. l\u9.er.'.'7AC.e_(.Lar.rylLog9od by ....... 13..: .. J:. .. '. ................. Job No . .. 1.-}_9 2 :::_~.Q .... ______ ......... ..

Grciund

SM 3 10.4 118

5 10.8 106

7 6.1 98

location .......... ~.C:.<:l .... .c;.~?.J.'?SJ.:i:S: .... 0~P .................................... Date Observed, .4./.+..~J.] .. Q .. ,_ .. __

OESCRtP'TION

NATURAL GROUND: Brown, most, dense micaceous fine. Silty sand interbedded with claey sand.

No Water, No Caving T.D. 16°'

i::;ll -- •~""" ---~-----~

..

c 0

·o; c

" Q.

" 11..1 -c .. u

LOAD CONSOLIDATION TESTS Job No. 1392-oo

J. 1.J~. ' II -_)·;~.1It.\".: .. l _'f'.; :--111 ;·; j,-.- ·:II_ ·1-:: .. ·:'.I ··· I "I I "[I • ·· , t - • - t · · · , - , · , -- -- ·· :I

I ' ' .. ' ' I - - - . - .. ' I .. ' ' I - . .. 'f 3.o- -- --·. --- __ "_ .. -1- i. -··1--· .. l -;-:-··r,r "+-- r ~ .. - - ·~ _, --r·: 1-- ---~- r ·:: :-1r

: i 1 I: JI+' ·: 1 :1'.::'.-::-1_ i::.11:·-.·.' ·:J· i.: ! :_

2.0- --· --• - L~-1-- -H-- - · .. ..-- , ' ··• --··i·- ._; · -' I I I ' ' I . .. i· . " . - j_ • - - - I-• - 1 ill ' . I I ! -" ._ '

II.. . 1.0-

I I .. , I . I.. . .. ., j, .. ' -I l,' .. I "' .... ' ' . ... -' I ' I i - - . : I .. : : "" ' " .1 ' ... -- ' f l . ' .. :1,. I" I " .. ' .. ..

1 • :.1.1 j .. - :. -1-~--~_!,_:,~ ~~.:r-~-:.. . .:1 :. ~·:..-. --'--'--,--+~'..:~ ..::: .. : ""t" ~l- -~· .. : _-. .,

Q.,

c .2 t; :g

s c 8 -c .. u .. .. Q.,

·· 1-:· 1. 1I:1,· · ·· 1· ·::-i ::· "·:1, ·:r--i~i:. ,:. ·: ;-: ·l:::< ::.·::il··:l~ ::::·::: ...• ' 1 I : ' ' ·, I '

0 I ' l I I . ' ' ' " -.. I " 1-- ' I ' . I ' I I'... . ,J .j. " ' I ' I I ""-'· ... ' ., . ' .... '·I .I I . .. ' I I ' I ' I I ' .. -,-. ' ~i>.. 4 3,1· ' < ' I !''" .1 LL" ..... ' ' - I I· "t' , j, I ''I ' 'I •.•

1.0- ---- i-- i-T-·11--1-+--j->-- ...... : ;·r: ... --~r:-1-~·-lt-i:-i:~.-~:: ~i': >:····-::-- ~ 7".: ~- :t ' : I I ' I - ' I.. .. ~;- 1 ' 9 I .. ' --11 • I I ' ''

2.0- --1- ---ll-- ·:-·-+- -'~,---11--1-~1 - -;r--~; :1 . ri ~~ · .. ~ =i~ , ~:: --::; .. ':. '1 .. : j-.:~ ' • ' .1 c I Ii ... . ' ',J.' .. i1--··11':' ""°"'k i- ·- ... 'I · 1 _, .. I I f i .1 .. j·r I ~~- ..... ,. 11 I "'\•,.1 ... - :: i!1: ... JI·'· 11! : • ' I I --1---i I -1 I . ·-. .• .. .. ~ I_[ .. " ' "• "1 ' ' ,_-+-+-+I 3.0-

4.0- --r;Tf[:-1 I ·. '' ~ ! : !~~~~ --::r-· _·:r1T ~I:: . \;:: 1~~ :::·r-·-j·T: .. J .·

5.o- ------1--- -:-- i--i .1

i j. l . -__ :~f~ -:4~--+ .. T .. ·: · : - ~~~-

11='.-:-P+-~-.!11- ·-- ·-~ -_ ·1 ' l i 1 I j"' .I ::._: :. - -11·. I ·I ''.: 1,:·:; ·:·11' .... :-IJl ·. ---.~

' I ' I ' I ' ' ' • ~ ' ' l ·· ~ - I I I - I' I' • .. ' ' ' - o.:

6.0- -~·+··-1--r- ~-1-+1--: I . ·:--:--::r·r~l·--rr - ,_ . -7iIE:"~::r-·. I i ~:·I-----, ' . I II I ! . ' I ' I .. . l: ''. ' 1 ' .:: . ~ i ·1'1' ; . -~:·. ' I- T. .: . I

.I . i ·i I ·· · · ·[ · . · ... , · -1 ·,. · -rn,--~ · 1-0 - ----- - --:-~· --r.·.·.- ... :-----[---;---:--:--::-,_ :. 1 ~~-:--.-... r·--·: - "'.'!Ti~·-~:~ _ _.~ ... 1., .. ----• j I I I ' . 'J_ - ·-•· .~ .. I • 1 I . I • ~· i· - .. - I .• '

-1 I ! ·1 tj·· ·r. , :1·· I 'J:: .. ~i- :·:--_ ·_· :.: ... ::.i1--·1 ! -__ , 8.0- --~--r·-'-1--+- -• l.'-'-C--'- •• 1 ·-·I·, -·- -+-- , ' ' -1--l.; ... "C '"1" -l I I f 1 ' . ' I J • ' , ' ·ti' ' 11 • ' - ' I. L ' ' ' 1·1 I ' ., ~

. 1· -'1 '1 :, 1'r:j,::; .. tll:·.·»·1'··1 ·':.'·l::,:,:.;;:1:.•:1 .. ··1,:·,"··1· • ' ' ' I 1 ' I ' ' 'l It•• I 'I I' '! I I .. 1·f I. ' .. :I':·: ... !''" 1· .. .

9.0- ---~· ~. ·-1-.--.· j •• -·4 ...... ' ~-+-~ -~. f.l.2.t"'". ·-.~ .. :-.. •.•.• .. • .......... ·i···-·-+"'"'!""-•.. ·-.-.•. - .. -.~~~····.·····J,., ... l .......... ·~·~. . . . ·1 . ". i . ' .. ' i . ; ' I : . ( -1 -: I ·' I -. ' ': • ; ; I I ; i i : .. : ; :: : ' 1·- ~ .. : . .' '.. '~: ' '

·'" · .... : .... : ... ,,',,, ''"j"••'11······1···1·'··:' l·1-·'·1--1't"·:1,··1··1i···· :; ·I:· I!':'·':.~ ... !···:·1 ! :1' 11:!·:,t:···:·l1:~~.~~·'····'·: '·' '.l1 ~··1-:ftl:'.:··l·t··"'.'"'''; ···~:··· ''·i··l-i .. ,.,. ';;, '' '" ,;.,;-.-.-"-i-•+-.-I .... ,,, . ., f;•,l 11-- ""1 1"'.,.i--'I"'' "'+

1: I 1 1 'I• · ' I' , .. I ' ' • I. '

' 0 0

I 0 0 N

I I I 0 0 0

~ ~ :il

0 FIELD MOISTURE

I I I I I 0 0 Q

I 0 0 0 N

I I I I I 0 0 0 0 0 8 0 0 "' ... .,

I l I 0 0 0 Q

Normal Load (LBS/SQ. FT.)

I I I l I I I I I

~ ~ ~ 8 0

~ § N

• EFFECT of ADDING MOISTURE

--- REBOUND

RnhPrt StonP & Associatps

'-' u...

0 tf)

tf)

"' ---'

..<:

Ol <::

"' ~ Vi Ol <::'. . ;: 0

°' .J;;. tf)

RESULTS OF SHEARING STRENGTH TESTS'

Undisturbed, Saturated Samples

13-1@6'

_L • • ••• '"m'm •• -h , ....

C ~ 200 psf

2000 - ....

1000 -··

0

4000

B-4@3'

fl -· 30°

c "" 350 psf

3000 j· ····-···-·---;

I i

2000

1000

0.._~~----:1~00~0::-------~2~0~0~0--------J~o~o-o--~----4~0~0~0--------5~0~0~0,.... ______ 6_0~00

EXPLANATION: B ·9@ 12' ~ S.omp!e laker'J from Bo,ing·9 a1 12 F~et inDep1h,

Notrnol lood t LBS/SQ FT.I ROBERT STONE & ASSOCIATES, INC.

Job No. 1392-00

c ., u

.. SOILS ENGINEERING DATA

Typical Fill Materials

LOCATION Boring No.

Depth, in feet ..

4

4.' c-6.'.

0 0

u..

u _(]

:> u

"' c: " Cl

MAXIMUM DENSITY CURVE Moisture Content in Per Cent of Dry Weight

130

""··+··- ··-·-r·-· ·-- !"" ··---·-r---·-· --~----· ,. I ·1 I

125

---- - w-- I -!-···-c:' I I I

115--- --- -- Y---r--···---,-., I i

120

110 ---t--- ·--·--·· 1~··--""'~-

: ': I I

l 0 5 >------+--· -+

5 10 15

! I

- _ _J __ -

20

I I I

25 30

REPRESENTATIVE FOR

Natural Ground

SOIL CLASSIFICATION

_Soil Type and Dc•cription

Brown-Yellow Silty Fine Grained SAND

METHOD OF COMPACTION

ASTM Stondord Te<t Method D-1557-70

.4" Dianieler n1old; l/30 i;-v. ft. volume 5 la yet s 25 blow$ per layer;

10 lb. hcmn1er dropped 18 inches

OPTIMUM MOISTURE CONTENT, In Per Cent of Dry Weight

MAXIMUM DRY DENS !TY, In Pounds Per Cubic Foot

11. 4

112.0

GRAIN SIZE DISTRIBUTION Sieve Sizes - U. S. STANDARD

I 0 16 40 100 200~-- Hydrome.ter-

-- ,... ..

-- --

... -·· .•.

·-t

10.0 1.0 0.1 .01 Particle Diameter -Mill inieters

G l•Coar-;;el Medium ...... rave • Sand 1 Sand

Fini} : Sand ' Silt

J06 NO 1392-00

I 00

90 ·-t-1 I

I

i I I

I

I

80

70

60

50

40

J

2

0

0

I 0

0 .001

Clay--

ATTERBERG LIMITS

liquid limit

Plastic limit

Plmtic Index

EXPANSIVENESS

%

%

%

% Swell from Air Dried lo Soturoled. Remolded lo 90% of Laboratory Standards.

~-urchorg!( Jb,./sq ft.) 60 400 , 650

%Swell


-- 8gmw.consrv.ca.gov/shp/apsi_siteinvestigation... · 4/25/1979 · :if::>.t...i...

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