;I 5~ - gmw.consrv.ca.govgmw.consrv.ca.gov/SHP/APSI_SiteInvestigationReports_OCR/APSI_003796/... · 24/01/1981 · Tentative Tract 37092 Agua Dulce Area Saugus, California Dear

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ALLAN E. SEWARD ENGINEERING GEOLOGY

Inc.

REGISTERED GEOLOGIST !171 ENGINEERINGGEOLOOIST246

SINCE 1958 22633 Decoro Dr .. Saugus, CA 91350

January 24, 198i

-....._Mr. Max Mann 17407 Rancho Street Encino, California 91316

·Subject: GEOLOGIC REPORT 5~ Tentative Tract 37092 Agua Dulce Area Saugus, California

Dear Mr. Mann:

This report represents our opinions regarding th~geologic

factors affecting the development of Tentative Tract 37092.

This report is required by the County Engineer, Engineering.

Geology Section, prior to tentative map approval.

(805) 255-5072

This investigation was performed irt October, 1979 and Decem

ber, 1980 through January, 1981. I

SCOPE OF INVESTIGATION

' This investigation included:

1. Review of reports compiled by this office in the general

area.

2. Review of USGS Bulletin 753 by William S. Kew (1924).

3. Review of California Division of Mines and Geology

Bulletin 170, Map Sheet 6.

LAND EVALUATION GROUND WATER SEISMIC GEOLOGY

I I I I I I I I I I I I I I I I I I I

This Map is Not a Survey of the Property.

Agua Ducle Quad. Scale 1"=2000'

LOCATION

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MAP

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JOI NUMlll• 9-204-4

ALLAN E. SEWARD Engineering Geology

I I I I I I I I I I I I I I I I I I .I

Mr. Mann January 24, 1981

Job No.: 9-204-4 Page 2

4. Review of California Division of Mines Bulletin 172, by

Gordon Oakeshott (1958) .

5. Review of the following aerial photographs:

Year Photo Scale Agency

1928 F-84, 85, 86, 1"=100'+ Fairchild 108, 109, 110 &

112

3-19-68 4-15 and 4-16 1"=1750'+ Dept. Agric.

1973 139, 140 & 141 1"=2600'+ U-2 Photos

2-12-79 1, 2, 3, 4, & 5 1"=400' George Gajate

6. Geologic mapping of exposures on and off the site using

the topographic map prepared by Preece and Icabellis at

a scale cif l" =160' and provided for this study. We make

no representations regarding the accuracy of this map.

7. Excavation and geologic logging of 42 exploratory back

hoe pits to a maximum depth of 13 feet.

8. Geologic analysis, conclusions and recorrunendations based

upon existing site conditions.

9. Preparation of Location Map, Geologic Map, Geologic Cross

Sections and this report.



PROPOSED DEVELOPMENT

Job No.: 9-204-4 Page 3

It is my understanding that the subject site is being sub

divided into 20 ten acre un-graded site lots. The only grad

ing will be the surficial grading on the unimproved roads.

SITE DESCRIPTION

The subject site consists of 208.3 acres north of the Antelope

Valley Freeway southwest of Agua Dulce and just north of the

Antelope Valley Freeway within the Santa Clarita Valley. The

site is in a natural state with a covering of scrub oak and

chapparal.

A high pressure gas line traverses the northern portion of the

site. An excellent well exists on Lot 17. Details of the

topography can be seen on the Location and Geologic Maps accom

panying this report.

GEOLOGY

General

The subject site is located along the north-central margin of

the west-plunging, northeast-trending synclinal (downfold)

trough of the Soledad Basin. This basin is wedged between

the pre-Tertiary crystalline igneous bedrock of the San Gabriel

Mountains on the south, and the metamorphic rocks of the Sierra

Pelona on the north.

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Bedrock

Job No.: 9-204-4 Page 4

Only two bedrock units are differentiated on the Geologic

Map for this study. The detailed mapping on the subject

site conforms to the origianl mapping by Kew in 1924.

Mint Canyon Formation (Troe)

Miocene non-marine sediments of the Mint Canyon Formation,

consisting of massive conglomerates and sandstones with in

terbeds of sillstones and mudstones, comprise the bedrock

beneath most of the site.

Vasquez Formation (T.v)

Upper Encene to lower Miocene non-marine sediments of the

Vasquez Formation occur within and north of the Elkhorn Fault

Zone on the subject site. This unit consists of massive

reddish mudstone and conglomerate with interbedded shales

and thin sandstone beds.

Surficial Deposits

Quaternary Terraces (Qt)

Remanants of older alluvial deposits that were deposited in

the Pleistocene mantle the ridge crests. These remanants re

present an older valley base plane of erosion and deposition.

The sediments represent

alluvial fan deposits.

downward erosion by the

topography.

stream channel, flood plain, and

The subsequent tectonic uplift and

streams has resulted in the present



Job No.: 9-204-4 Page 5

The Quaternary Terraces are characteristically reddish-brown

and consist of sands and angular gravels within a silty sand

to clayey sand matrix. Portions of the Quaternary Terraces

are partially cemented by caliche.

Soils

Brown silty sands to reddish-brown silty clay soils mantle

the bedrock units and the Quaternary Terraces. The residual

soils on the bedrock units correlate to the underlying lith

ology. Consequently the siltstones and shales produce thicker

soil zones and they are potentially expansive.

ENGINEERING GEOLOGY

Geologic Structure

The bedrock at the site has been uplifted and tilted to the

southwest. The northeast trending Elkhorn Fault Zone traverses

the northern portion of the tract. Due to the compressional

forces associated with this fault, minor anticlines and syn

clines, also trending northeast, occur (See Geologic Map).

The three-dimensional geometry of the bedding planes are

shown on the Geologic Map and Geologic Cross Sections A-A',

B-B' and C-C'.



Faults-Seisrnicity

Fault Rupture

Job No.: 9-204-4 Page 6

The Elkhorn Fault, which is a left lateral fault with an

apparent displacement of 0.7 miles in the Agua Dulce Basin,

traverses the northern portion of the tract. Oakeshott in

dicated Late Quaternary movement due to the clear linear

depressions within the Older Alluvium.

This movement with the south side up resulted in the format-

ion of the Sierra Pelona Valley (Agua Dulce) and an accurnu-

lation of a thick sequence of water bearing sands and gravels.

The Elkhorn Fault has thus acted as a natural darn for the

Quaternary Terraces and the impounding of water.

Subsurface exploration on this tract and other sites in the

immediate area, by this office noted offset soil zones.

This indicates Recent activity on the Elkhorn Fault (See

Trench Logs) .

Due to the potential for future fault rupture on the subject

tract, Building Setbacks will be required as shown on the

Geologic Map. The Building Setbacks must be shown as Re

stricted Use Areas on the Final Map.

Shaking

The property is subject to shaking and associated ground

motions from earthquakes on nearby and distant faults, which

is characteristic of all Southern California. Neither the

time, location or magnitude of an earthquake can be accurately

predicated at this time.



Cut-slopes

Job No.: 9-204-4 Page 7

Future development of the un-graded site lots should avoid

southwesterly facing cut-slopes and/or under cutting of

bedding planes (See Geologic Map) . If southwesterly facing

cut-slopes or other cut-slopes that may be required that

undercut bedding planes; they will have to be (1) cut back

to the angle of the bedding; (2) buttressed or; (3) con

structed at a stability equivalent.

Building Sites

In compliance with the requirements of the Geology Section

of the County Engineer, a geologic safe building site for

each lot is designated on the Geologic Map.

Ground Water

Two natural springs occur along each of the major canyon

bottoms (See Geologic Map). The consolidated nature of the

bedrock units and the elevated nature of the recommended

building sites indicates the ground water will not pose a

problem. The potential for liquefaction is remove to non

existant.

Sewage Disposal

It is my understanding that on site private sewage disposal

systems will be utilized on the lots. On the basis of the

data acquired in this investigation, the future private sew-



Job No.: 9-204-4 Page 8

age disposal systems will not affect the geologic stability

of the future building sites.

The location and design of the future sewage disposal systems

should be geologically reviewed and approved. This is warrant

ed due to the erratic caliche zones and impereable nature of

portions of the bedrock and soils, which will affect the normal

life expectancy of a sewage disposal system, if not designed

accordingly.

Rippability

The basal conglomerate of the Mint Canyon Formation (Cg - Lots

2 through 12) is well consolidated and would require heavy

single shank ripping for major grading. The sandstone and

conglomerate of the Vasquez Formation (Ss+Cg - Lots 1, 2 &

13) will also require heavy single shank ripping for any

major future grading.

Expansive Soils

Portions of the soils mantling the Quaternary Terraces and

these residual soils on the siltstones and mudstones are

potentially expansive. Future structures should be designed

for the expansive soils and expansive bedrock, accordingly.

Exploratory Backhoe Trenches

The exploratory trenches were made with a 2 feet wide bucket

and extended down to a maximum depth of 11 feet (See specific

trench logs for dimensions) . Their locations were approxi-



Job No.: 9-204-4 Page 9

mately plotted in the field by triangulation using the pocket

brunton. Therefore any future foundations should avoid

these trenches or they should be designed for possible settle

ment.

LIMITATIONS

This study was conducted according to generally accepted

engineering geologic practice for studies of this magnitude.

My conclusions and recommendations are based upon the data

available and my interpretation of that data based upon my

experience and background. Hence, my conclusions and re

commendations are professional opinions and are not meant

to be a control of nature; therefore, no other warranty is

herein expressed or implied.

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CONCLUSIONS AND RECOMMENDATIONS

Job No.: 9-204-4 Page 10

1. Tentative Tract 37092 is geologically feasible for re

sidential development as 20 un-graded site lots, provid

ed the recommendations in this report are followed.

2. Geologically safe building sites exist on each proposed

lot.

3. No known historically active earthquake faults traverse

the Tract.

4. The potentially active Elkhorn Fault Zone traverses the

tract and will require a Building Setback Zone (See Geo

logic Map).

5. The Building Setback must be shown on the Final Map as

a Restricted Use Area.

6. Since Tentative Tract 37092 is designed as un-graded site

Lots, the Engineering Geology Section of the County Engi

ineer will file a final report with the Real Estate Com

missioner stating, that Restricted Use Areas are present

and that additional geology and soils engineering reports

may be required. The requirement for future geology and/or

soils reports will depend on the design of the future in

dividual grading plan and building plans when they are

submitted to the County.

7. Any future extensive grading within the Sandstone and

Conglomerate units of the Mint Canyon and Vasquez Canyon

Formation will require heavy ripping.

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Mr. Mann Job No.: 9-204-4 Page 11 January 24, 1981

8. Expansive soils mantle portions of the Quaternary Terraces

and bedrock units (siltstones and shales) and future struc

tures should be designed accordingly.

9. All future foundations should extend through the soil zone

into firm natural materials.

10. Due to the size of the lots, it is geologically feasible

for private sewage disposal by septic tank and leach lines.

11. The private sewage disposal systems as noted on the Geo

logic Map will not affect the stability of the recommended

building sites.

12. The final location and design of the future private sewage

disposal systems should be geologically reviewed and approvd

ed.

13. Future southwest facing cut-slopes or cut-slopes under

cutting bedding should be avoided. Cut-slopes under

cutting bedding plans must be ( 1) cut back to the angle

of the bedding, ( 2) buttressed or (3) a stability equiva-

lent.

14. All future major grading plans should be geologically

reviewed.

15. All grading and/or foundations excavations should be in

spected by a qualified engineering geologist to confirm

that the recommendations in this report are followed.

16. The location and dimensions of the exploratory trenches

should be noted, relative to future single family grad

ing and/or building plans, to insure that foundations do



Job No.: 9-204-4 Page 12

not traverse the trenches without special design for

potential settlement.

This opportunity to be of service is appreciated. If you

have any questions concerning this report, please call.

Respectfully submitted,

Allan E. Seward Certified Engineering Geologist 246

Enclosures:

Distribution:

Location Map

Geologic Map - Plate 1 (In-Pocket)

Appendix

Geologic Cross Sections A-A', B-B' & C-C'

Summary Geologic Trench Logs - Figure 1

Geologic Trench Logs 12, 13, 26, 27, 29, 34,

36, 37, 38, 39, 40 and 42

( 2) Mr. Max Mann

(4) Preece & Icabellis Attention: Mr. Torn Icabellis

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GEOLOGIC CROSS SECTION -

Lot 26 I Lot 16 '

EXISTING ' PROFILE

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Troe

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N 6 5 E -

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RD C{L ' ' Lot 17

Qt

I 7 · . .., ,._ .. ,;...;.,· . .. ·-· I_,,,,.. ~ 2380 -.o --- 0 -.. _90::0: ·"" 0 /

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2060 I

ALLAN E. 'SEWARD ENGINEERING GEOLOGY

JOB NO.• 9-204-4 !I DATE• 1-24-81

1 11 =160' I DRAWN BY• AES SCALE - REVISED•

·1

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GEOLOGIC CROSS SECTION I

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B -

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Lot 20 I Lot 19 Lot 15 Qt

I RD C { L

Qt EXISTING

- ~ PROFILE - - 2400 ~:· ..... ·. ~

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_L------------------------------------------------------------------tl ______ __,L2080

N 5 2 E _


JOB NO.• 9-204-4 I DATE. .i..,24-81

SCALE• l ";160' DRAWN BY· AES

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Rd

c C/L

- I Qt

"

GEOLOGIC CROSS SECTION

ELKHORN FAULT ZONE ~

Structural Setback Area

Lot 18 Lot 18 Lot 19 Lot 15 Qt

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C' ~ 2500

2340 -

ALLAN E. \SEWARD ENGINEERING GEOLOGY

JOB NO. 9-204-4 II DATE• 1-24-81

DRAWN BY•AES SCALE• 1"=160'

REVISED•


Trench No.

l

2

3

4

5

6

7

8

9

10

11

14

15

16

17

18

19

20

21

22

23

24

25

28

30

31

32

33

Depth (Ft.),

7

4

5

3

2

2i,

5i,

6

2i,'

3

4

8

2

2

2i,

2

7

5

6

2

5

5

7

3

2i,

2

2

5

FIGURE 1

CONDENSED GEOLOGIC TRENCH LOGS

Lithology-Structure

Soil; 0-3'; Tmc; 3-7'; Slt + ss, Dip 17 West; gray, pink white and varigated

Soil; 0-1 1; Tmc; 1-4'; ss, gray; N 30 E, 15 w

Soil; 0-2 1; Tmc; 2-5'; Ss, gray, Massive, dip 4 west

Soil; 0-1'>'; Tmc; l'>-5'; Cg; massive

Soil; 0-8"; Tmc 8 11 -24 11; Ss, massive

Soil; 0-16 11 Tmc 16 11 -30"; Ss+Cg; N 7 W, 305

Soil; 0-2'>'; Tmc 2'>-5'>'; Slt, whitish-pink, massive, caliche

Soil; 0-2'; Tmc 2-6'; Slt+Mdst, massive

Soil; 0-2'; Tmc 2-2~'; Slt, massive, caliche

Soil 0-18"; Tmc 18 11 -S'; ss+Cg, massive

Soil; 0-21"; Tmc 21 11 -4'; Ss+Cg, massive

Soil; 0-7~'; Tmc 7~-8'; Ss+Slt, massive

Soil; 0-6 11; Tmc 6 11 -2' Cg, hard excavation

Soil; 0-4"; Tmc 4 11 -2'; Cg, massive, hard excavation

Soil; 0-18 11; Troe 18"-2~'; Ss, Very hard excavation

Soil; 0-6 11; TmC 6 11 -2 1

; cg, very hard- excavation

Soil; 0-6'>' ; Tmc 6'>-7'; Ss, white

Soil; 0-2'>.; Tmc 2'>-5'; Ss+Mdst

Soil; 0-5 I j Tmc 5-6'; Ss, greenish, N 15 w, 23S

Tmc 0-2'; Ss+Slt; N-S, 15W

Soil; 0-2'>';Tv 2'>-5'; Ss+Cg, very hard excavation; aiPping 23 west -

Soil; 0-6 11; Tv 6 11 -5 1

; Slt+mdst, caliche

Soil; 0-2'; Qt 2-7'; Ss+cg, N 17 E, 47 N

Tv; Ss, well bedded and thin shales; abundant caliche; - N 22 E, 35 N

Soil; 0-1'; Tmc; 1-2'>'; N 5 W; 218 very hard

Soil; 0-1 1 i Tmc; 1-2 1; Cg, massive, very hard excavation

Soil; 0-6': Troe; 611-21; Cg, massive

Soil; 0-3 1; Qt; 3-5 I j Sand & Gravel


Jo1 NUMU•' 9-204-4 I DATE' Jan. 24, 1981

SCALI: -----DIAWN IY: aes lfVISID:

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Trench No. Depth (Ft.)

35

41

5

6

CONDENSED GEOLOGIC TRENCH LOGS

Lithology-Structure

Soil; 0-3~'; Qt; 3~-5'; Sand & Gravel, friable

Soil; 0-1'; Qt; 1-6'; Sand & Gravel


JOI NUMllR' 9-204-4 I DAT•' Jan. 24, 1981

SCALE: -----DRAWN IT: aes llVISID:

- - - - - - - - - - - - - - - - - - -JOB NO. 9-204-4 PROJECT Mann - TT 37092

LOGGED BY AES Trench Log No . ..l.L DATE January 24, 1981

LITHOLOGY BEDDING FAULTING JOINTS COMMENTS

0-2' SOIL; dark brown clayey silt and sand; expansive, dessi- Excavated 10/18/79 cation cracks

2-12'>' QUATERNARY TERRACE; Qt, orangish-brown silty sand with caliche stringers; @ 5' 6" thick caliche zone

·12'>-13' BEDROCK; Tmc, reddish-brown to gray, massive sandstone Hard excavation @

and conglomerate, hard 12'>'

No Ground Water

No caving

SCALE I"= 5 Ft. VI TD 13 Ft.

.. . _)_ I 1-- -

---"-- ~ _,L

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-------------------JOB NO. 9-204-4

~~~~~~~~~

LOGGED BY AES Trench Log No . ..l..L PROJECT Mann - TT 37092

DATE January 24 .. , .. l.9_8 ... 1.


0-2' SOIL; dark brown, clayey silt, expansive Excavated 10/18/79

2-4' QUATERNARY TERRACE; Qt. old soil, light orangish-brown silty sands

4-6' BEDROCK; Tmc, bedded sandstone and siltstones N 10 w 31 s

No Ground Water

No caving

SCALE I" o 5 Ft. TD 6 Ft.

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--'-'-- --"-- + - ,,.,. "';' :_.:, - -.,..... ;.,. ~, y ~-

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-------------------9-204-4 PROJECT Mann - TT 37092 JOB NO.

LOGGED BY AES Trench Log No . ..1.L DATE Januarv 24. 1981

LITHOLOGY

0-6" SOIL; pinkish-brown silty sand; backfilled crevasses

6"-8' BEDROCK; TV & Tmc; platy red white caliche; massive green cated by faults

SCALE I"= 10 Ft.

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I-

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and and

gray sandstone with purple sandstones trun-

1 + + T

j_ ! ' + l

+

BEDDING FAULTING JOINTS COMMENTS

a N 52 w 14 s

b N 45 w 12 s

I

Excavated 10/18/79

i - N 15 E 74 N

ii- N 10 W 90

No

No

TD

Caving

Ground

8 Ft.

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Water

----

' ----

----

-------------------JOB NO. 9-204-4 PROJECT Mann - TT 37092

LOGGED BY AES Trench Log No . ..J:L DATE Tanuar:i ?4 1 qRl ' .


0-1' SOIL; brown silty sand Excavated 10/22/79

1-B'>' QUATERNARY TERRACE; Qt, light brown to reddish-brown silty sand and clayey sand with caliche; firm; @ 8 to si, fine to medium sand, moist, permeable

No Ground Water

No Caving

SCALE 1" = 5 Ft. TD 81, Ft.

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- -JOB NO.

LOGGED BY

0-2'

2-8'

8-9'

- - - - - - - - - -9-204-4

AES Trench Log No.~

LITHOLOGY BEDDING

SOIL; light brown, silty fine sand, loose, permeable; abundance of large lag boulders to 30"

QUATERNARY TERRACE; Qt, light brown sands and gravel, very permeable, numerous roots; friable- trench caving

BEDROCK; Trnc, massive, sandstone and conglomerate, very Massive hard

SCALE I"= 5 Ft. w l f-

,,

_/ µ._ __,,_ ~

I

\~ + f- . Q • . + f-•

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f- I i + !

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- - - - - - -PROJECT Mann - TT 37092

DATE Januarv 24, 1981

FAULTING JOINTS COMMENTS

No Ground Water

Trench Caving

TD 91, Ft.

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- - - - - - - - - -JOB NO. 9-204-4

LOGGED BY AES Trench Log LITHOLOGY

0-3' SOIL; dark brown clayey silt; dessication cracks

3-9' QUATERNARY TERRACE; Qt, reddish-brown sand and gravels With clasts to ~ 11 ; loose permeable; @ 5-8' sands with caliche

- - - - - - - -PROJECT Mann - TT 37092

No . ..l.L DATE January 24, 1981


9-10' BEDROCK; Tmc, massive gray conglomerate; hard excavation Massive

No Ground Water

No Caving

SCALE I"= 5 Ft. TD 10 Ft.

1 I + '

V/

+ I

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-


LOGGED BY AES Trench Log No.-lL DATE January 24, 1981


0-2 1 SOIL; light brown silty sand

I 2-7' BEDROCK; Tmc, sandstone and mudstone; pink, green, gray a N 25 w N 3 E thin bedded highly weathered and fractured; many minor 13 s 67 N shears and off sets, but no apparent offsets in soil zon· , Cg bed faulting associated with original tectonic uplift

b N 30 w 22 s I

c N 20 w N 25 E 27 s 85-90 NW

No Ground Water

N 7 E No Caving -

SCALE I"= 5 ' 10 Ft. TD 7 Ft.

- \'~ ---:.-~ J_ -~

I - + -

~- ~ ,, + , - . - ~

, -. I I ·- - I - ~ - I -

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LOGGED BY AES Trench Log No . ..12... DATE Januarv 24, 1981

0-1'

1-21,'

LITHOLOGY

SOIL; light brown silty sand

BEDROCK; Tv, gray brown, massive conglomerate and inter-· bedded very hard pink sandstone

N 85 w

SCALE l"=lOFt.

,_

I f-

f-

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; + ' ,_

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No Ground Water

No caving

TD 2J, FT.

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j i I I I I I '

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---

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LOGGED BY AES Trench Log No . ...llL DATE January 24 1981 ,


0-1 SOIL; light brown silty sandss

1-3' BEDROCK; Tv, massive, hard, gray brown conglomerate and 15° w I sandstone

I

No Ground Water

N 75 w No Caving

SCALE I"= lOFt. TD 3 Ft.

I 1 )__-----

I

! I-

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~

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I Al I Al\I I= C:l=WAl>I'\


LOGGED BY AES Trench Log No._21. DATE January 24, 1981

0-1'

1-6'

LITHOLOGY

SOIL; light brown silty sands

BEDROCK; Tmc & Tv, green shale and sandstone, faulted against red hard sandstone; abundant caliche in shale unit; surface soil off ·set

N 45 W '

SCALE I"= 5 Ft.

~

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I-

f--

'

f--

r-

-f--

r-

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Sheared N 35 E and distor• 90 ted

I

I I

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i ' i I I I I

i I I i I I I

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I

i

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I

I

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Elkhorn Fault Zone

Fault Trough 30 Ft north of Trench

I -

I

-

-

i -

-

---

I -

--

i -

ALLAN E SEWARD

------------------·-JOB NO.

LOGGED BY

9-204-4 PROJECT Mann - TT 37092

AES Trench Log DATE J anua rv 24 1981 '


0-1' SOIL; light brown sandy silt Elkhorn Fault Zone North of Fault

1-6' BEDROCK; Tv, gray to light green sandstone, very l":lard, a N 80 w Numerous trough porcellaneous, brittle, fractures easily, abundance of 47 s shears and

/ caliche; sheared ana numerous drag folds; soil slicks Sta. zone zone not off set b N 70 E 15 to 25 Ft•

47 s drag fol

N 45 w No Ground Water

No Caving

SCALE I"= 5 Ft. 0 5 10 15 20 25 TD 6 Ft.

·~ 1

I

>-- ->-- - -

~ i i >-- T I

-I I

>-- . ,, .. --- ~ ~ ! ! -. ' . -4 I ·' .

; I

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>--

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I I

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'


LOGGED BY AES Trench Log No . ..iL DATE Januarv 24 1981 ' LITHOLOGY BEDDING FAULTING JOINTS COMMENTS

0-l"i' SOIL; light brown, sandy silt North of Elkhorn Fault Zone

l"i-5' BEDROCK; Tv, whitish-gray. sandstone, hard, thin bedded, a N 40 E brittle; extensive caliche zone along southern end of 43 N trench- area of high ground water during the Pleistocene

b N 27 E 47 N

c N 30 E I 52 N

SCALE I"= 10 & 30 Ft.Horizontal· Vertical 1"=5 Ft.

t-

~ -"'-- .. 1 I Change ScaU '

t- "-/ - _J_ /_" . '-"//'- . -: +c-

--u__ --j<__,i•</ " / /----: i i l" = 30 Ft.1 t- y:Y- ... ·_ . \ ·.- T _/,;- .· ...,_

f--r I

··' // • . 1· .;y: . ' t- \. ..'.". •.I • ' •

./ ,____ I ~···// ·-;-'4 . f--50!1 -

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t- -+- . /. ·1 .. ' /. - -l/71

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-

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--

-

.

.

.

-

-

-

-

Documents

;I 5~ - gmw.consrv.ca.govgmw.consrv.ca.gov/SHP/APSI_SiteInvestigationReports_OCR/APSI_003796/... · 24/01/1981 · Tentative Tract 37092 Agua Dulce Area Saugus, California Dear