HomeMy WebLinkAboutCT 73-58; CAMINO DE LAS ONDAS; PRELIMINARY SOILS REPORT; 1973-06-14•
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PRELIMINARY SOILS REPORT
Occidental Sewer, Poinsettia Lane to "
Proposed Camino de Las Ondas (3600 + Lineal Feet)
in the City of Carlsbad, California
b/t!/13~~)
Occidental Petroleum
Land and Development Corporation
June 14, 1973
Pacific Soils Engineering, Inc.
Irvine, California'
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PACIFIC SOILS ENGINEERING. INC.
17875.SKY PARK NORTH (P.O. BOX OQ) IRVINE. CA. 92664
TELEPHONE: (714) 557-9450
Occidental Petroleum Land
and Development Corporation
4201 Birch Street
P. O. Box B
Newport Beach, Cal ifornia 92660
Attention: Mr. James Dulehohn
L.A. COUNTY OFFICE
1402 W. 240th Street
Harbor City. Ca. 90710
(213) 325-7272 or 775-6771
VENTURA COUNTY OFFICE
Post Office Box 75
Thousand Oaks .. Ca. S13S0
(213) 889-9919
(805) 495-6513
June 14, 1973
. Work Order 100196
Subject: Preliminary Soils Report; Occidental Sewer, from
Poinsettia Lane to Proposed Camino de Las Ondas
(3600 + lineal feet), in the City of Carlsbad,
California.
Gentlemen:
Pr~sented herewith is a preliminary soil report relative to the. construction of the
subject sewer.
Information concerning the proposed design of the system was furni~hed by Rick
Engineering Company. Sewer profile and plan sheets in addition to a topographic
map of the subject area, was received. A plan showing a possible .borrow site (Alta
Mira Disposal Area) and a surface water control plan was also received.
A plot plan showing the location of the proposed sewer is presented on Plate A.
LOCATION AND PROPOSED CONSTRUCTION
A .sanitary sewer is proposed extending from the intersection of Poinsettia Lane and
Lowder lane (Manhole No. 11) westerly to Interstate 5 and then following the
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June 14, 1973
Work Order 100196 Page 2
easterly ri"ght-of-way of Interstate 5 approximately 2800-feet where. it extends
. easterly approximately 480-feet to a downslope terminal (Manho,le No.1). The
pipe size varies from eight (8) inch V.C.P. at the higher end to 12-inch V.C.P.
at He lower end. The proposed station ing for the sewer system beg ins with Station
1+00 at Manhole. No.1 (the downstream end) and extends to Station 39+00 at
Manhole No. 11 (the upstream end).
In order to develop the required gradient for the system, it will be necessary to
place fill from approximately Station 0+-30 to 25+20. This fill is proposed in the form
of a d·ike or levee with an equipment width top ( 15-feet) and side slopes of 4-
horizontal tc? 1-vertical on the easterly side of the levee and 2-horiz~ntal to
I-vertical on the westerly side (Interstate 5) of the levee. The maximum depth of
fill is approximately eight (8) feet.
The fill levee shall impede the. surface water and a drainage device consisting of .
R.C. P. beneath the levee and rock revetment at the inlet and outlet. Th is is proposed
in the vicinity of Station 5+00.
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No appreciable. fill will be generated from the construction of the sewer system. It
will be ne~essary to borrow material from a nearby source to make the' proposed
. levee fill.
PACIFIC SOILS ENGINEERING, INC.
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June 14, 1973
Work Order 100196
SITE COND ITIONS
Page 3'
The soils onsite generally consist of clayey and silty sands. These materials are the
result of marine terrace deposits and may vary from loose to very dense. The soils
that are anticipated in the trench excavations should be' moderately dense in nature.
Vegetal cover exists next to Interstate 5 where the ,levee fill is proposed.
The'area easterly and superjacent to the proposed alignment has been used for
agricultural purposes. In addition, the natural flow of surface water has deposited
silt and loose surface' materials in the area next to Interstate 5. These materials are
predominate between Station 5+00 to 13+00.
The proposed borrow area is a previously graded side h'i" fill. The fill w~s placed ,
with side slopes of 4-horizontal to 1-vertical. The material appears to be suitable
for use as levee fill for the sewer construction.
PACIFIC SOILS ENGINEERING, INC.
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June 14, 1973
Work Order 100196 Page 4'
CONCLUSIONS AND RECOMMENDATIONS
Based ypon the limited field investigation,. laboratory analysis and engineering analyses,
, the following conclusions and recommendations are presented:.
1.
2.
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The development of the sewer along the proposed a.lignment appeqrs to be acceptable
from a soil engineering view point.
Grading and placement of compacted fill will be nece$sary to provide the required
sewer gradient. In order to prevent pos$ible settlement of the sewer pipe in the fill
. area, it will be necessary to use the following procedures in the placement of
compacted fi II.
a. Strip the area of all vegetal cover or organic materials.
b. Remove the loose upper surface soils that are the resuit of recent alluvial
deposits. Removals on the order of one (1) to two (2) feet may be necessary
in the area from Station 5+00.to 13+00.
The actual depth of removal should be determined in the field by the soil
engineer's representative.
c. After all removal has been completed, the areas to receive fiU shall be
processed and compacted to a minimum of 90 perc;:ent to a depth of 12-inches.
PACIFIC:: SOILS ENGINEERING, INC.
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June 14, 1973
Work Order ·100196 '. Page 5
Fi.lJshould be spread in thin lifts, moistened or dried as necessary
to hear optimum moisture conditions and compacted to a minimum of
90 percent of the laboratory standard (ASTM:D 1557, modified to
three (3) Jayers). This includes trench backfil-I over the pipe.
e. The loose materials overexcavated may be reused as compacted fill
provided it is free of organic matter.
f. All removal, processing of naturaJ ground, placement of compacted
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fill and placement of trench backfill, should be done under the inspection
and testing services of a soilserigineer in accordance with the criteria
set forth by the City of Carlsbad.
3. The fill should be brought to its proposed final grade prior to the excavation
and placement of the sewer pipe.
4. The levee slopes are programmed at ratios of 4-h6rizontal to l-vertical and
2-horizontal-to 1-verHcal ~ These ratios are considered suitable for the
anticipated soils to be used as fill and forthe minor slope heights.
Afte~ the completion of construction, the slope areas should be surface rolled
by equipment to reduce erosion.
PACIFIC SOILS ENGI",EERING, INC.
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, June .14", 1,973
Work Order 100196 Page, 6
5. , Groundwater is not qnticipated at ~he depth of excavation proposed. If the
'adjacent field is irrigated during construction, surface water could be a nuisance.
6. Trench excavations in natural ground or compacted fill may be made vertical
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to a depth of five (5) feet in accordance with the State ,of. California, Division
of Industrial Safety cri'teria for hard ground. Trenches deeper than five (5)
feet should be sloped back or shored in accordance with their criteria.
7 • Provided the previous grading recommendations are followed, t~e proposed
fill w.ill be competent to support the sewer pipe and future fill without
adverse settlement. 'fhe placement of additional fil·1 over five (5) feet in ,
depth over the sewer, in the future, should be reviewed by a soil engineer.
s. the upper soils in the general vicinity of the sewer would appear to ~ s!)itable
for use as compacted fill in the proposed I~vee as long as th,eyare free of organic
material and not highly expans,ive cI~y.
The disposal area for Alta Mira Unit No.2 has been proposed asa possible
. --b~rrow site. This area appears to be very well ,suited as the soils are goad and'
. grading or removal can be accomplished from the top of the comp~cted area
in a manner that the final drainage pattern does not appreciably change.
PACIFIC SOILS ENGINEERING, INC.
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June 14, 1973
Work Order 100196
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This report is subjed to review by the controlHng authorities for the subject project.
Respectfu 1 J y subm i tted ,
·PACIFIC SOILS ENGINEERING, INC.
By: ~fY.~
REX P. KETTER, General Manager
R.C. E. 15251
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Distt. : (4) Addressee
(4) Rick Eng ineers
RPK/jma
PACI.FIC SOILS ENGINEERING, INC.
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PACIFIC SOILS EN~INEERING, INC.
17875 Sky Park North Irvine, Calif.
(714) 557 9450
W.O. ,oolq,-Date "·1~·'3
PLATE. A
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June 14, 1973
Work Order 100196
Laboratory Standard:
Typical S'urface Soil
Reddish Silty Sand
TABLE J
LABORATORY RESULTS
ASTM:D -557
Modified to three (3) layers.
Laboratory Maximum Density 121'~ 5 p. c • f 0
. Optimum Moisture 8.00k
73% Sand, 19% Silt, 8% Clay
Remolded Shear %= 290
(Saturated) C = 110 pos.f.
PACIFIC SOILS ENGINEERING, INC.
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Job No.
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\1 .. 100 .. 140
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Ytrts, d n. 2,oYltc,b' Jd-b a3:z. J *;J/,'lD -! poe.:: I?,C7 I ... ' I 3~ --~ / 1 v or-, , 'Jf9D i ! .. ! I j .. -1 ,
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RICK: ENGINEERING COMPANY I' r,t~~11~7Lc~~~~~T::,:r ..
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,PEAK TO AVERAGE SEWAGE FLOW FOR SOUTHERN CALIFORNIA COMMU~"'ITIES .:-.
!,opulation
1,000
'1,050
1,100
1.150
1,200
1,250
1,300
1·,350
1,375
1,400
1,~450
1,500
1,550
1,600
1,.6~5
·1,650
1,700
1,750
1,800
1,850
1,900
1,950
2,000
2,075
2,150
2,225
2,300
. 2,375
2~425
. 2,-500
2,600
. 2-,675 . " '.2,'775
2',850
,2,·925·
3,000
.... , 3,100 .
3,200
3,350
3,500
3,600·
3,700
3.,800
3,900
4,000
4,20Q
4,'400
4,600
4,800
5,000
Ratio of
Peak to
Average
Flow
2.49
2.48
2.47
2 .. 46
2.45
2.44
2.43
2.42
2.41
2.40·
.. ':~ 2~'39 .... ' .
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t -" • .-• ",' .~
2.36 .
2 .. 35
2.34
2.33
2.32
2 .. ?1
2;30
2.29
2.28
2.27
2.26
2.25
2.24
2.23
2,'22
2.-21
2.20
2,·19 .
2.18
2.17
2.16
2.15
2.14
2.13
2 •. 12
2 .. 11.-
2.10
2.09
2.08
2.07
2.06
2.·05
2,'04
'2.03
2.02
2.01
2.00
Population
. 5,200
... ,:.=.:5,350 ... ;. -:':
.. ~: ·5~.500
5,750
6,000
6,200
6,400
6,650 '.
6,900
. 7,300
Ratio to·
Peak to
Average'
Flow
.1.99 .... :
.... 1 •. 98c~,"',,:l--c" .' .
1.97' -,. :
1~ 96'.:':';" .
1.95 ." ~,~::, ....
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11,9943 :, ~:" ...... , '. . . ... ::.;.:.:.~:~.~:~~~ ,,: .>. . " ~ ," . -.-. .: -.. 1. 92 '.:-' .. ~,.,
1. 91. .. :".~ .. ' ..... :.:--.
1. 90 .. ,; .... ". .' _.. .. , ~':'.;-' .:
,.' .-7,500
..... :.-. 7 J 750
. '~':.'." 8 100' ... ' ... J '. 8,400
.8,.750'
9,100
9,600
10,000
10,800
11,500 .
12,300
13,000 .
13,800
14,500
15,000
16,000
16,700 .
17,400
18,000 .
1 89···· . .>,,'. '. .:~ ~ ·<:.~.:~~~;j~ft~~~~~i~~~ 4::: ---:: _ -. ~j li~~:I::i:{ .. '~i~~~~~~
18,900
19,800
21,500
22,600
23,800
25,000
26.> 500
28,000
29,800
.32,000
34,000
36,000
38,000
42,000
45,000
4.9,000
54,000
60,000
70,000
90,000
100,000+
1.84 ..... :
1,83
-1. 82
1. 81
1.80
1.79
1.78-
1.77
1..76
.1. 75
1.74
1. 73
1.72 .
1.71 .
. 1.70 .
1. 69 ,": :.
1.68
1. 67 ' ._ .' , _
1.66 ,:.:.; .....
1. 65
1.64 .
1.63
. 1.62
. 1.61.-·
1.60
'1.59
;I.. 58
1.57
1.56
1.55 .
1.54
1.53
1 •. 52
1. 51
1.50
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SALKIN ENGINEERING CORPORATION:-
ORANGECOUNTYOF~CE
1045,.~EST COLLINS AVENUE
ORANGE. CALIFORNIA 92667
, (714) 6SS-7?61 '
SAN DIEGO COUNTY OFFICE' ,
~ . ...,. 2541 STATE'STREET, SUITE·tOT .,.,.'
'CARLSEAD,'C~'~IFORr.nA'9200S' .
(714) 729-3424 " ,:,
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The feasibility of a joint sswer'for'Alta Mira ,Units' l'~~d 2'
and Occidental property to the' south:::thereo:f#',~and'~',:eas:i:,::'o,f}>.-'EX'('A .. 1
Interstate No.5, .... 7as discllssed,Priday, April 7, 1972,. during
a 2; ;):) p.m. meeting at Ca~lsbad city Hall. Thos-a in attendance
at th'e meeting ware:
A 1 'ta l<1ira Developer -Russ Richards "':.: -,~', '" :,:
?ick Engineering Co_ -Jack p~ines
Occidenta 1 "Petroleum (Vahlco} -Ken r,'lasmann
SaU~irr' Engineering Corp. -Dick' 0' Rear
city of carlsbad -Joe Spano and Jack Nikkinen "
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A prei.~iOary.. stuc;ty.~}:?y :Rick Engil'leering,combining the' sewer
f'lows of Occidental and Alta Mira, indicated that' the cost: to
Occidental for oversizing the lines within Alta Mira:Develop~
ment would be $41,942.00. I't' was decided that' Jack,Raines '
and Dick O' Rear would review the design together to see~ if, "
the oversizing costs could be reduced to a point" .,,,qhera it
~Nould be economically feasible for, Occidental to coop~rate " ,,",
on a joint sewer. .Previous studies by Sa,lkin Engineering
had detsrmined that a lesser i'nvestment would be required'
to sewer the Occidental property westerly at its north lina,
across Interstate No.5 to Ponto Sewer Main.'
Sinc~ ~he meeting we have reviewed the qssign and
~ollowing combined flow data:
Occidental Peak Flow
Al ta Nira U 11
= 1.108 MGD
= o. 714 ?~GD
*Combined Peak Flow= 1.822 MGD
*Rafer to tabulation of design flows attached as
investigation for combined sewer to Ponto, Sewer
submitO::.!::he, '
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to t~~-'1~ ~~i -J::<.l i'~\~ \~~.(i '~:~:i.~ i\~ ':::.1 ~:~~ ':Vi lZ~~~. ~:.~
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". The-current improvem.eni:' plans-'for':Alta Mira:':Unlt #:1' . , ,.
indicate:'" 562 L.F •. of 12" line @, 0.3 1:0·0.4% and 694·L.F.. .> ' ~
of 8'· line.. @ 3 ... % in Lawd-er.:Lane,.:, 1331 L.F.' of 10" line: @ ",. ,.! l. ,-' '0.4% in:.:trlli:t .. .,#l and nothing. for . .iUnit.'#2. We propo5e~ to 'J'
'. revise the design as followsr--562,Ii.F. of l5'" line @. 0.3 . : ~
. ':to 0 .. 4% and 694 L.F .. :'of 15" line @ 3+% in Lowder Lane1 ,. ,,' ~
. ·44S.~."L~·F~~'~ of'~"15 tJ fine. @ 0.20%, 580 L.F.~ of 12." line r~t-0.65%·~· .' . ~ S
-·-ana-::34-:O~~F:-()f'~i':i~--"iihe~ @ '0. 50% '''in unit #-li -1276 L.F'. oft
12'.f;..:J.ilia:~@ 0 .. 50% in Unit #2. This design mSl!}ts or exceeds·the· . i
design flcw~raquiraments for both development3 w~th pipes flow-' ... ,i~g full, at :p'~ak ~;~low. eond·itions. .' f ;~ . ", .' -:-" .?, ; ~:'.~,~)
..... :..:. '~~4 !"\"'" "-' ;' . . ~1 ~ ." ~ '. 1 ':' . ·.w'a;:;r~.~sj:· ,(.~~i ttem.'approva.~, .. 9f,. the,~proPosed des.igp;,;. prioJ:'. t~.·,<.~·.r: .~,~ ... ;:~-.. ~ .. ~,:~:< ~ .. ~;,;.~.,,::',.~ .. ' ~~:::!~':~: f#ial negotiationa-::'and 'prepa'6iUon'; 'Of. a:9reem.~ritS;. ~b~tWee'n . ... _ ~
the-,developers· for~~overaizing of/the Alta 'Mira: sewers, .. ' ". ", -:"',' ~':::. o}
RZO:bas
cc: f'.ir. Ken ~"1asmann
Vahlco
?1:r. Jack Raines
. Rick Engineer~ Co.
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, ~ Very truly yours.. "1 ~
SALKIN ENGINEERING CoaPO&~TION
Richard E. OIRear
project Engineer
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SALKIN (tGINEERING CO~ORATION ';:: -...~ ," -:: . "
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1045 WEST COLLlNS AVENUE
ORANGE. CALfFORN'IA 92667
<.714) 633-7261
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SALKIN ~N~INEERI;;GCO~~O~i;I~N .<\:~<~ '$'
1045 WEST COLLINS AVENUE
ORANGE. CALIFORNIA 92667
(714) 833-7281
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PRELIMINARY SOILS REPORT
Occidental Sewer, Poinsettia Lane to \
Proposed Camino de Las Ondas (3600 + Lineal Feet)
. in the City of Carlsbad, Califurnia
Occidental Petroleum
land and Development Corporation
June 14, 1973
Pacific Soils Engineering, Inc.
Irvine, California
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CAPACITY CALCULATIONS
OCCIDEN~AL SEWER
Prepared By:'
Rick Engineering Company
509 Elm Avenue
Carlsbad, California 92008
June 1, 1973
Job Number 4466
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