'!. -e- . ·\ DEPARTMENT OF PLANNING AND DEVELOPMENT SERVICES

RANDAlL L. ABBOIT DIRECTOR SIC.VB G. LADD Assistant Director

Date: r / s-hrr,, I

In reply please refer to File Number:

TO:

We enclose the following items:

for

Sets of __ Check Prints

Tracings

Approved Plans

.:-;:~' ;;£ Review and Recommendations

Correction and .Resubmit ta 1 of the following items:

Prints

s lsi-r<, ' '

Tracings and __ Prints

Remarks:

By:

Enclosures

cc:

1103 GOLDEN SfATE AVENUE BAKERSFIELD, CA. 93301·2499

Planning Se.vices (805) 861 ·2615 Building Inspection (805) 861·2391 l'loodplain Managemont (805) 86 l ·2892

Water Plans

Sewer Plans

Street Plans

Your Files

Approval

Signature

.. '$TATE Of'CALIFORNIA..,-THE RESOURCES AOtiNCY GEORGE DEUKMEJIAN. GoV9mor

OEPMTMENT OF CONSERVATION

DIVISION OF MINES AND GEOLOGY 8AY AREA REGIONAL OFFICE 360 CIVIC DRIVE, SUITE 100 PLEASANT HIL~, CA 94S'2'3-1997

PHONE, (41 ') 671-4920 •

Mr. Lyle L. Timberlake Engineering Geologist Depart.ment. of Planning and

Development. Services 1103 Golden State Avenue Bakersfield, CA 93301-2499

Dear Lyle:

77 (,,"}

77 (.' 77c,s 71(, 7

April 2, 1986

we are placing on oepn file the following report., reviewed and approved by the· County of Kern in compliance with t.he Alquist.-Pr iolo Special studies zones Act:

Revised engineering geologic report, Tecuya Properties, for sections 21, 27, 28, 34 & 35, T. 9 N., R. 20 \'I., Frazier Park-Lake oft.he Woods Dist.riot., Kern Count.y, CA; by Geoplan, lnc.; April 27 1 1984.

Please not.e that t.his report does not. cont.ain logs of any t.renches or eaposures or Figure 5 (referred to on page 9). The only figure is a partial copy of the property map, showing a geologic map, the fault.a, and t.rench locat.ions. Apparenf.ly t.here was an ear lier report., as indicated by reference t.o a CDMG reivew of Feb. 28 1 1984. We have no record of a previous report or any review in our Pleasant. ttill files. I would appreciate it if the missing par:t.s of t.he report. and t.he ear lier report were submitt.ed for our file,

It is also noted that the faults are slightly mislocat.ed from t.he traces shown on the SSZ map. This may affect the 100-foot recommended set.-back.

EWtt:rfq

cc: A-P file

Sincerely yours,

Earl w. ttart., CEG 935 Senior Geologist. &

Program Manager

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RANDALL L. ABBOTT DIRECTOR

1103 GOLDEN STATE AVENUE BAKERSFIELD, CA. 93301-2499

STEVEN G. LADD Assistant Director

March 27, 1986

STATE GEOLOGIST c/o Mr. Earl Hart California Division of Mines & Geology 380 Civic Drive, Suite 100 Pleasant Hills, California 94523

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Planning Service• (805) 861·2615 Building Inspection (805) 861-2391

Floodplain Management (805) 861 ·2892

RE: Submittal of Geologic Report, Tentative Parcel Map Numbers 7763, 7765, 7766, and 7767, Frazier Park area, Kern County.

Dear Mr. Hart:

The enclosed report has been reviewed and accepted pursuant to the Alquist-Priolo Special Studies Zones Act. A restricted zone along an active fault trace has been recommended. This zone shall be placed on the applicable parcel maps. ·

It has been determined that no undue hazard exists with regard to surface rupture outside of the zones depicted in this report. ·.,.

This report is not Intended to supplant any geological investigations that may be required by the Uniforms Building Code as adopted by Kern County.

Very truly yours,

RANDALL L. ABBOTT, Director Planning and Development Services

By: Lyle L. Timberlake, CEG 343 Engineering Geologist

LLT:rrk

cc: Public Works Department Terry L. Paxton

STATE OF c.AllfORNIA-THE RESOURas AGENCY G~ORGI!: DfUKMEJIAN, GaiYWnor

DEPARTMENT OF CONSERVATION DIV1SION Of lAND RESOURCE PROTI:ctlON DIVISION OF MINES ANO GEOlOGY DIVISION OP: OIL A.ND GAS

FEB 2 a 1984 a~ MAR I p z 0""0,..;:...;i,..1 i;i_-_~----:-=- -S~Cft~A~"81" ~-. --- . J9_:J:,6l-(aj-ss13

·- " . -i..r Mr. Peter Whitehead Kern County Planning Department 1103 Golden State Avenue · Bakersfield, CA 93301

Dear Mr. Whitehead:

Notice of Preparation for GPA l, Map 238, Kern County. SCH #83120502.

Thank you for forwarding the Notice of Preparation for the proposed general plan amendment and parcel map in the Frazier Park area of southwestern Kern County.

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The Department's Division of Mines and Geology (CDMG) has special expertise in evaluating geologic and seismic hazards, as well as mineral resource issues, and we wi.11 review the relevant information and analysis when we receive your document from the State Clearinghouse.

CDMG Note 46, enclosed, is used as a guide by CDMG staff when reviewing Draft EIRs. It contains a checklist of potential environmental impacts related to geology, seismology and mineral resource conservation, which you should consider in preparing the EIR. Those items that are marked are items that were not addressed in the engineering geologic report accompanying the Notice of Preparation, or items where we feel supplemental evaluation is necessary.

We have the following specific comments on the above-noted geologic report.

1. In the conclusion section, the report states that the site will not be subject to potential seismically induced landslides or liquefaction. These items were not specifically discussed in the report.

2. Also in the conclusion section, the report states "No part of the Tecuya Properties is subject to or affected by evident potential ground rupture, as defined by the Alquist-Priolo Special Studies Zones Act, 1974", notwithstanding this conclusion, the report goes on to recommend a 50-foot wide setback zone from the mapped principal and main subsidiary traces of the San Andreas fault zone. Based on our <=valuation of the data presented in the report,. the

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Mr. Peter Whitehead Page Two

3.

only substantiated conclusion which can be made relative to potential surface rupture, is that the locations at which the two trenches were placed may not be subject to fault rupture. It should be noted that the trenches were located between mapped fault traces,but not across these traces. Therefore, for the lots or portions thereof located within the Alquist-Priolo Special'Studies Zone, if the building sites selected are different than the locations where the trenches were placed, it will be necessary to conduct additional surface rupture evaluations at the proposed building sites.

The report recommends a design ground acceleration at the site based on an earthquake magnitude range of M7.S-B.5 for an event located 6 to 10 miles from the site. We recommend that the upper end of the magnitude range be used for the design event, based on the MB+ 1857 earthquake along this section of the San Andreas fault (see enclosed CDMG Note 43). Also, justification should be provided for locating the design earthquake at some distance from the site, rather than at the fault's nearest approach to the site.

We also recommend the following CDMG publication be used, among others, in the preparation of the EIR:

CDMG Note 43, Recommended Guidelines for Determining the Maximum credible and the Maximum Probable Earthquakes (copy enclosed l .

If you have any questions regarding these comments, please contact Robert Streitz, CDMG Environmental Review Officer, at ( 916) 322-3202.

Sincerely,

Dennis J. O'Bryant Environmental Program Coordinator

Enclosures

cc: Robert Streitz, Division of Mines and Geology Lynn Jones, Division of Mines and Geology Bruce Walters, Office of Planning and Research

5079B-2

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( .:;,fA- ( I µ ~ 2-;!>8 J Engineering Geologic Report Tecuya Properties Por. Sec. 21, 27, 28, 34 & 35, T9N, R20W, SBBM Frazier Park-Lake of the Woods Dist. Southeast Kern County, California

Project 15688 March 25, 1983

(213) 881-2063

®~@[p~ffim11 ~OO©o consulting engineering geologists

18432 OXNARO STREET TAAZANA, CALIF. 91356

Joh.n 0. Metrill, President

March 25. 1983

Engineering Geologic Report Tecuya Properties Por. Sections· 21, 27, 28, 34 & 35, T9N , R20W , S8BM Frazier Park - Lake of the Woods Dist. Southeast Kern County, California

Jim Wainright P.O. Box C Lebec, California 93243

Dear Mr. Wainright:

Project 15688

In accordance with instructions from Jeffrey French, Principal Civic Engineer,

French & Associates, Bakersfield, an engineering geologic investigation was

conducted on the Tecuya Properties to determine if ground rupture, liquefaction

or seismic induced landslide may be hazardous to future division of the property

for purposes of residential development.

A principal purpose of this report is to identify and analyze conditions

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that may bear upon the request to amend the Kern General Plan to change from the ~

current designation 8.5 (resource management) and 8.4 (mineral and petroleum)

to 5.6 designation (residential - minimum 2.5 acre parcel).

Part of the Tecuya properties, within Sections 34 and 35, are within the

Special Studies Zone associated with the San Andreas·· fault, as shown on the

attached portion of Special Studies Zones Map 21462, Frazier Park Quadrangle

(1974). The north boundary of the Special Studies Zone has been drafted on the

accompanying Engineering Geologic Map of Tecuya Properties, which\utilizes a

1000 scale topographic and boundary map (undated) prepared by French & Associates,

-.. __ , Civil Engineers, Bakersfield.

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' GEOPl.AN,, Inc. CONSUi.flfllG ENGIN~l;RING Gl::OLOGl51$

Project 15688 Page Z ' March 25, 1983 (

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This report is based an surface and subsurface geologic exploration that

included examination and measurement of earth materials exposed in roadcuts,

quarry pits and prospects, outcrops and stream banks and in two seismic trenches

excavated at the locations shown on the accompanying engineering geologic map.

Illustrated logs of the seismic trenches are appended.

To supplement field exploration, data contained in our files were reviewed

along with pertinent published geologic and seismic data •

This report embodies the principles of investigation, analysis and reporting

as customarily practiced in the profession of engineering geology in southern

California, with emphasis on applicable requirements of the Alquist·Priolo Geologic

Hazards Zone Act of 1974, but with due regard for requirements of the Kern County

Building and Grading Ordinance and the California Environmental Quality Act.

It is the intent of this report to convey geologic and seismic data that may

be incorporated in development plans and be submitted to the appropriate reviewing

authority. It was written to be understood by reasonably well educated persons,

but to avoid misunderstanding of terms and usage the reader is directed to the

Glossary of Geology, 3rd Edition, 1974.

Persons utilizing these data are cautioned that latent defects may be con·

cealed by earth materials and that such defects, if present, are beyond the scrutiny

and evaluation of the engineering geologht.

Location and Topographic Expression:

The Tecuya Properties are an irregular "L" shaped parcel comprising about

930 acres in pQrtions of Sections 21, 27, 28, 34 and 35 of T9N, R20W, SBBM. They

comprise gentle to steep mountainous terrain lying north of Frazier Mountain Park

Road about 4~ miles west from its intersection with Interstate 5, southeastern

Kern County,

GEOPLAN. Inc_ CONSUl.TING 1!NG1NEERING G!Ol.OQIS1S

Project_ 15688 Page 3 March 25, 1983

Access is by means of graded but unpaved, moderately steep roadway that winds

northwest from Frazier Mountain Park Road to a point in the northwest ~ of Section

28 where it intersects Scott Russell Road which, in turn, trends southerly to

Cuddy Valley Road. Most of this loop road fa passable year round, with higher

portions snowbound for short periods only.

Elevation differential within the property is nearly 2000 feet, with gentle

slopes along the south side of the property on the lower flanks of Cuddy Canyon

and along the crest of a northwest-trending ridge traversed by the northeasterly ~ boundary. Elsewhere slopes averaging 35 degrees form the south and southwest

flanks of the ridge. Road cuts to 35 feet high were excavated at ~:1 to 1:1, with

excavated material forming descending slopes inclined at l~:l.

The mountaintop receives annual snow and rainfall equivalent to about 30 inches

but there are no through-flowing streams as most snowfall ablates, and with exception

of minor runoff on the access roadway there is virtually no surface water. Ground

water occurs in structural discontinuities in bedrock at a depth ranging from 100-500

feet beneath the surface. There are no springs or seeps within the property or on ~

the lower, south and west-facing slopes.

Geologic Elements:

Surffcial deposits, consisting of talus, residual soil, colluvium and alluvium,

mask bedrock on much of the property. These deposits range in thickness from a

film to as much as 50 feet (alluvium} and are generally alike in texture. Each

is composed of angular, deeply weathered fragments of rock in a matrix of loose

to weakly· consolidated silt, sand, and smaller rock particles. Residual soil is

brown to very dark reddish-brown whereas loose fill is tan to light brown, and

alluvium and colluvium exhibit varying dark colors.

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' GEOPLAN, Inc. C:ONSUl.fl~G ENGINEERING GEOLOOISTS

Project· 15688 Page 4 ( March 25, 1983

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All surficial deposits are subject to creep on slopes steeper than 3:1, fill

may slump when saturated.

Bedrock is comprised of older metamorphic rocks and younger, igneous intrusive

rocks. These rocks crop out extensively on west and southwest-facing slopes and

are well exposed in roadcuts. The metamorphic rocks are judged to be roof pendants

of dolomitic limestone and associated calc-silicate hornfels. These fonner sedi-

mentary strata are of probable late Paleozoic geologic age. They were intruded

and metamorphosed by granite, granodiorite and quartz monzonite of probable late

Mesozoic geologi~ age.

The metasediments crop out fonning prominent bluffs and knobs of hard, light

gray marbleized, dolomitic limestone. In general, these deposits trend northwest

and dip northeast, but are intensely fractured, sheared and faulted, Outcrops of

·limestone are traceable fairly continuously along the steep south and southwest

flank of the mountain in Sections 27, 28, & 34 (see map). locally the limestone

units have been prospected and quarried on a small, sporadic basis •

Intrusive granitic rocks fonn the matrix that encloses the older metasediments.

Granitic ·rocks are coarsely crystalline, tan to gray-brown, and deeply weathered

within the upper 50-75 feet. In this zone rocks are soft and crumbly to very hard

and brittle. All of the granitic rocks are severely fractured and sheared.

Intrusion was accompanied by deposition of secondary minerals i_n the meta­

sediments. These include garnets and epidote but also metallic sulf-ides of iron and

molybdenum. Whereas the garnet-epidote zones are prominent in the former shales,

the pyrite-molybdenite mineralization is disseminated to locally concentrated at

the margins of limestone bodies.

Geologic structure is complex regionally due to the San Andreas fault and

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· GEOPIAN, Inc. COrtSUlTING ENGIMEEl\lfllG Gl!Ol.C)alST$

Project 15688 Page 5 March 25, 1983

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other, associated faults, but within the Tecuya Properties structural characteristics

are fairly strightforward. This conclusion is warranted on the basis of outcrop

continuity and exposure of bedrock in roadcuts and quarry pit slopes on the property.

The San Andreas fault skirts the south boundary of Tecuya Properties, where

it is concealed beneath 20 feet or more of alluvium and has no recognizable topo­

graphic expression. However, the trace of. the fiult is evident east and west from

Tecuya Properties on the basis of strong topographic evidence that includes sag

ponds, offset stream courses, shutter ridges, aligned ravines, fault line trace in

a 11 uvi al deposits, and a 11 i gned springs and vegetation. These features are evident

on air photos (referenced) and on Special Studies Zones Map FM 21462, Frazier

Mountain Quadrangle. With few exceptions in other areas this fault has not been

( identified in trenches that penetrate unconsolidated earth materials (alluvium)

blanketed by a well developed residual soil. This suggests that the rate of soil

formation is faster than the legal definition of Holocene time (11,000 years before

present~B.P.) or, more likely, identifying surface characteristics of ground rupture

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in unconsolidated deposits such as alluvium or colluvium become obscure within a few~ years after the event, Weakly cemented alluvium is well exposed in near-vertical

banks that range to 30 feet high along the Cuddy Creek channel. Nowhere in these

exposures is there evidence of fault rupture within the area contiguous to sections

34 and 35. These observations suggest that; (a) the <i'lluvium forming Cuddy Creek

channel was deposited since the 1857 earthquake, (b) the zone of ground rupture has

lost its identity in unconsolidated deposits, (c) evidence of ground rupture is

present, but has not been exposed by erosion, road building or trenching. Of

these three premises, the first is the rrost probable, nowithstanding the residual

soil profile that has developed within the last 125~ years. The meanders of Cuddy

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· GEOPLA~. Inc. CONSULtlNG ENGINEE:fllfNG GEOLOGISTS

Project 15688 Page 6 March 25, 1983

Creek channel are located in a manner that would al~ost certainly expose the fault,

but it is possible that the fault trace was obliterated by reworking of alluvium

during some old but historical flood.

Seismicity is quiet in the Frazier Park-Lake of the Hoods area, There have

been no earthquakes along the San Andreas fault, and the nearest events are clustered

to the north, near Wheeler Ridge. A single event has been plotted 1-2 miles

southwest from Tecuya Properties, but its Richter magnitude was in the range 4,0-4.g .

Obviously, the San Andreas fault is capable of an event in the range of M6-M7.

Conclusions:

These conclusions are based on engineering geologic exploration and analysis of

conditions at Tecuya Properties, and upon review of geologic and seismic data.

1) The proposed amendment to the Kern General Plan as described on page 1 of

. this report, is feasible from an engineering geologic standpoint.

2) No part of the Tecuya Properties is subject to or affectep by evident

potential ground rupture, as defined by the Alquist-Priolo Special Studies Zones

• Act, 1974.

3). Tecuya Properties are not affected by potential seismic induced landslide

or liquefaction.

4) Strong ground motion is expected during the projected economic life of.

development that may be implemented on Tecuya Propert!es.

Reconmendations:

l) Pl'opi:ised structures should be designed to withstand horizontal component of

ground acceleration estimated at 0.3g. This value is approximately equivalent

to 2/3 of the total estimated acceleration of 0.5g which, in turn, is expected to

be generated by an earthquake_having a Richter magnitude of 7.5-8.5, and having its

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· GEOPl.AN. lnc. CONSUi.TiNG rNGINi"E. .. INd c::iiOLOGllTS

Project.25688 Page 7 March 25, 1983

focal point within 6-10 miles of the site {Fig. 5).

2) Notwithstanding the lack of evidence to de~onstrate the San Andreas fault,

a zone 50 feet wide, centered on the principal trace and on the main subsidiary

trace {see map) is recommended to be applied on any development map pf the Tecuya

Properties. These setbacks should be drawn as accurately as possible, but could

be revised in the event further substantial data are obtained regarding the fault

locations.

Thank you for this opportunity to be of service. Please call if there are

questions regarding this report.

JDM:sh

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· GEOPLAN, Inc. CONSULilNQ ENGINEl;FilNCl Gli:O!.OGISTS

Project· 15688 March 25, 1983

REFERENCES

1) U.S. Department of Agriculture (ASCS); Stereographic Aerial Photographs

ABL-21K-167, 168; scale 1""2000 1.!.; 11/25/52.

2) Richter, C.F., (1958); Elementary Seismology, W.F. Freeman & Co., 768 p.

3) Crowell, J.D. (1964); Guidebook; The San Andreas Fault Zone From the Temblor

Mountains to Antelope Valley, Southern California.

4) Vedder, J.G., & Wallace, R.E. (1970); Map Showing Recently Active Breaks

Along the San Andreas & Related Faults Between Cholame Valley & Tejon Pass,

California; U.S. Geological Survey, Misc. Geologic Investigations Map I-574.

5) California Division of Mines and Geology (1974); Official Map 21462, Special

Studies Zones; Frazier Mountain Quadrangle.

6) California Geology (Oct, 1975); Seismicity of California, 1928-1931; California

Division of Mines and Geology.

7) California Division of Mines and Geology ( 1976) ; Specf al Publication 47;

Active Fault Mapping and Evaluation Program •

8) California Geology (July, 1979); Seismicity of California, January 1975-

March.1979; California Division of Mines and Geology.

9) U.S. Department of Agriculture (ASCS): Stereographic Aerial Photographs 379-

203, 204; scale 1""'1390 1±"; 9/8/79.

· 10) Merrill, J.D. (May 30, 1978); Report. of Seismic Investigation, Lots 1-5 & 14,

Mt. Pinos Way between Glendale Trail @Alhambra Trail, Frazier Park, California;

Private research report, Project 74216.

11) Merrill, J.D. !(May 31, 1978); Report of Seismic Investigation, Lot 9, Block 8,

Frazier Mountain Tract, Frazier Park District, Kern County, California; Private.

research report, Project 84350.

12) Geoplan, Inc. (1 Dec 81); Preliminary Planning Analysis; Por N~ Sec 34 & NW~

Sec 35, T9N, R20W, SBBM; Lake of the Woods District, Kern Co., CA. Private

J\1Al:' SHU\V lN,W, ll.ECENTLY AC'l'IV~REAl{S ALONG 'l'IIJ~ S.t '~AND.AS AND R:.._.LATED ,,-AULTS BE'l',VEEN

CIIOLA1vIE VALLEY AND TEJON PASS, CALIFORNIA

By

11s·oo· ·

M!SCELLA N EOU S GEOLOGIC INV ESTIG A TJON S MAP 1-574

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