HomeMy WebLinkAboutCT 73-02; RANCHO SANTA FE ROAD; FIELD DENSITY TESTS; 1975-12-24• cpRD~ W~lL.~ ~=q,; ~ @ . {~,..,.)1ftr f! GJ~ . ;
BENTON ENGINEERING. INC.
APPLIED SOIL MECHANICS -FOUNDATIONS
6717 CONVOY COURT
SAN DIEGO, CALIFORNIA 92111
December 24, 1975
PHILIP HENKING BENTON
PRESICENT .. CIVIL ENGINEER
La Costa Land Company
Costa Del Mar
Carlsbad, Caljfornia 92008
Subjecb
Gentlemen:
.Project No. 75-1O-15P
Results of Field Density Tests
Taken in Sewer Trench Backfill
Rancho San to Fe Road
Carlsbad, Cal ifornia
TELEPHONE (714) 565·1955
RECEIVED
DEC 2 9 J975
CITY .oF CARLSBAD
Building Department
This is to report the resul ts of field density tests taken in soils placed as backfill over the sewer
line in Rancho Santa Fe Road, Carlsbad, California.
The tests were taken during the weekly periods indicated below:
Test Number
1, 2 and 3
4 to 7, inclusive
8, 9 and 10 .
11 to 21/ inclusive
22 to 36, inclusive
37 to 43, inclusive
44 to 51 1 inclusive
52 to 61, inclusiv«;l
Week Ending
October 18, 1975
October 25, 1975
N.ovember 1, 1975
November 8, 1975
November 15, 1975 .
November 22, 1975
November 29, 1975
December 6, 1975
ihe appro{<imate locations at which the tests were token and the final test .results are presented
on .pages 2 and 3 under the "Table of Test Results". The laboratory determinations of the
maximum dry densities and optimum moisture contents of the major fill materials qre presented
on page 4 under the "Laboratory Test Results."
Respectfully submitted,
BENTON ENblNEERING, INC.
R. C. Remer
Distr: (3) Addressee
( 1 ) Addressee
Attn: Mr. Burton C. Kramer
(1) City of Carlsbad, Engi.neering Dept.
(1) 'Rick Engineering Company, Carlsbad
Rev;ewedb~' ~
Philip H. Benton, Civil Engineer
R. C. E. No. 10332
'i . ProjeCt No. 75-10-15F e -2-• DeGember 24, 1975
~, La C9sta Land' Company
t,
i TABLE OF TEST RESULTS
Depth
of Test
Approx-Below Maximum
imate Existing Field Dry Dry
Test Location Grade Moisture Density Density Percent
No. Sta. in Fee·t % dry wt . Ib/cu ft Ib/cu ft Compaction Remarks
1 1+25 1.0 7.2 110.6 118.3 93.5
2 4+70 0.5 12.0 107.0 '118.3 90'.5
3. 0+90 0.5 12.5 110.0 118.3 93.0
4 7+00 1.0 3.7 111.0 113.4 98.,0
5 8+10 5.0 11.4 106'.8 120.1 88.9
.6 8+75 5.0 14.1 106.4 120. 1 88.5
7 7+50 3.0 16.7 114.8 120.1 95.4
8 6+50 2.0 11. 1 110.0 120.1 91.6
9 8+00 2.0 11.5 114.9 l20.1 95.5
10 10+50 5.5 9.6 114.8 120.1 95.4
11 10+00 3.0 13.2. 98.5 120.1 81.9 Reworked
12 9+25 Grade 12.7 ro8~8 120.1 90.4
13 10+00 3.0 12. 1 109.5 120.1 91.1 Ck on #11
14 11+00 5.0 12.5 102.1 120.1 85.0,
15 11+80 3.0 10.5 110.0 120.1 91.6
16 8+00 Grade 10.1 111 .8 123.3 ' 90.5
17 13+55 5.0 6.0 98.0 120.1 81.4 Reworked
18 10+50 Grade 9.6 112.5 122.5 . 91.6
19 13+55 5.0 14.1 105.5 120.1 87.8 Ck qn #17
20 14+40 3.0 12.4 111.0 120.1, 92.1
21 15+00 5.0 12.3 106.9' '120. 1 88.9
22 17+00 5.0 16.7 108.1 121.9 88.8
23 19+00 5.0 11.5 110.2 121.9 90.6
24 20+00 3.0 9 •. 6 113.1 123.3 91.6
15 15+50 2.5 12.3 113.0 123.3 91.5
26 16+50 2.5 13.9 115.0 123.3 93.3
27 15+20 Grade 20.0 105.0 123.3 85.0 Reworked
28 18+70 .. Grade 13.8 111.0 120.1 92.·3
29 21+00 3.5 12.0 107.0 119~8 89.3
30 23+00 3.5 9.7 H3.0 123.3 91.6
31 24+00 3.5 12.8 109.0 119.8 91 • 1
. 32 15+20 Grade' 9.8 115.0 123.3 93.2 Ck on #27
33 25+00 3.0 9.0 111 .5 121.9 91.5
34 27+00 3.0 11.7 106.0 119.8 88.5
35, 23+50 Grade 11.5 n1.0 121.9 91.1
36 25+50 . Grade 8.7 116.6 123.3 94.4
37 28+00 3.0 14.5 103.0 119~8 86.0
BENTON ENGINEERING, INC.
~j , Project No. 75-10-15F e -3-• ,December 24, 1975
" La Costa Land Company
4' TABLE OF TEST RESULTS (CONT.)
Depth
of Test
Approx-Below Maximum
imate Existing Field Dry Dry
Test Location Grade Moisture . Density Density Percent
No. Sta. in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
38 29+50 3 •. 0 9.8. 111 .5 120.1 .92.7
39 32+00 3.0 9.1 113.2 123.3 91.8
40 34+00 Grade 10.4 119.0 123.3 96.5
41 28+50 Grade 8.9 119.3 123.3 96.6
42 35+00 3.0 14.8 105.0 119.8 87.7
43 38+00 5.0 18. 1 88.5 119.8 74.0
44 39+00 4.0 13.7 102.9 119.8 .86.0
45 41+00 2.0 9.7 111.0 120. 1 92.3
46 35+00 4.0 16.9 102 .• 8 119.8 85.,9
47 37+50 2.0 14.3 110.8 120.1 92.0
48 41+50 4.0 16.3 106.0 120.1 88.2
49 44+00 2.0 8.2 115.2 123.3 93.5
50 38+00 Grade 13.8 111.0 120.1 92.4
51 44+50 Grade 11.7 H4.8 123.3 93.1
52 47+80 12.0 15.1 109.0 119.8 91 .0
53 49+00 12.0 14.7 108.0. 119.8 90.2
54 48+00 10.0 17.7 94.0 119.8 78.5 Reworked
55 49+25 8.0 18.7 ,]03.9 113.8 91,5
56 47+90 6.0 15.5 102.1 113.8 90.0
57 48+50 4.0 16.8 103.0 113.8 90.6
58 47+20 3.0 12.6 102. 1. 113.S 90~0
59 46+50 3.0 13.2 103.0 113.8 90.6
60 47+80 2.0 13.3 102.1 113.8 90.0
61 48+75 Grade 15.6 102.1 113.8 90.0
BENTON ENGINEERING. INC.
Project No. 75,;..10-15F
La Costa Land Company .' -4-• December 24, J975
LABORATQ.RY TEST RESULTS
The maximum dry densities and optimlini mqisture contents of .the ma.jor fill materials as deter-
mined by the A.S. T .M. D 1557-70 method, thqt uses 25 blows of a leO pound rammer faWng
from a height of 18 inches On each of 5 layers in a 4 inch diameter 1/30 cubic foot compaction
cyli nder, are presen ted as fo II ows:
Soil Description
Yellow brown silty fine to medium sand
Gray brown fine to medium sand
Brown sil ty fine sand
Brown silty fine to medium sand with
chunks of sil ty clay
Brown clayey fine to medium sand
Gray brown clayey fine sand
Yellow brown sil ty fine to medium sand
Olive gray fine sandy clay .
BENTON ENGINEERING. INC.
Maximum
Dry Density
Ib/cu ft
118.3
113.4.
120.1
123.3
122.5
121.9
119.8
113.8
Optimum Moist-
ture Content
% dry wt
, 12.1
12.6
12.1
11.2
10.4
11.9
11.7
15.5
• •
BENTe ENGINEERING, INC.
APPLIE SOIL MECHANICS -FOUNDATIONS
717 CONVOY COyRT
PHILIP HENKING BENTON
PRESIDENT· CIVIL ENGINEER
La Costa Land Company
Costa Del Mar Road
Car I sbad, Ca I i forn i a 92008
SAN DIEGO, CALIFORNIA 92111
December 1-6,. 1975 TELEPHONE (714) 565.19~5
Subject: Project No. 74-11-270
Results of Field Density Tests
Taken in Trench Backfill,
Subgrade, Subbase, and
CT75-0;l..
Gentlemen:
Base Materials
Santa Fe Glens
Carlsbad Tract No. 73-2
Carlsbad, Cal ifornia ~
This b to report the results of field density tests taken in soils placed .as backfill over certain
utility lines, and in subgrade, subbase, and base materials placed on the Santa Fe Glen
subdivision and on Segovia Way west of this subdivision in Carlsbad, Cal Hornia.
The tests were taken during the weekly periods indicated below:
Test Number
Test~ Taken in Trenc;:h SackfHI
1 to 14, inclusive
15 to 26, inclusive
27 to 39, inclusive
40 to 51, inclusive
52 to 76, inclusive
Week Ending
June 21, 1975
July 12, 1975
July 19, 1975
July 26, 1975
August 30, 1975
Tests Taken in Subgrade, Subbase, and Base Materials
1 to 9, inclusive
10 to 35, inclusive
36 to 48, inclllsive
49 to 64, inclusive
65 to 90, inclusive
91 to 99, inclusive
October 11, 1975
October 18, 1975
Oc;tober 25, 1975
November 1, 1975
November 8, 1975
November 12., 1975 (Date of last test)
Protect No. 74-11-270
, La· Costa Land Company • -2-• ,=,
The degree of compaction required in the various areps was as follows:
Tr.ench backfill below
2.0 feet below finished
grade in street areas
Trench backfill in
lot easements
Subgrade
Subbase
Base
85%
90010
95%
95%
December 16, 1975
The appr.oximate locations at which the tests were taken and the final test results are presented
on pages 3 to 14, inclusive, under the IITable of Test Results. II The laboratory determinations
of the maximum dry densities and optimlKTl moisture contents of the major fill materials'are
presented on page 15, under the II Laboratory Test Resul ts. II Some ·of the maxim urn dry dens i ties
shown in the "Table of Test Results" were combinations of these.
Respectfull y subm itted,
BENTON ENGINEERING, INC.
By -:R~~
R. C. Remer
Reviewed by L~~~
Phil ip H. Benton, Civil Engineer
Distr: (3) Addressee
(1) Attention: Mr. Burton C. Kramer
(2) City of Carlsbad, Engineering Department
(1) Rick Engineering Company, C(lrlsbad
RCR/PHB/ew
BENTON ENGINEERING. INC.
Project No. 74-11-270 • -3-• December 16, 1975
,.. La Costa Land Company =
TABLE OF TEST RESULTS
Depth * Maximum
Approx-of Fi" Field Dry Dry
Test imate at Test Moisture . Density Density Percent
No. Location in Feet 0/0 dry wt Ib!cu ft Ib/c'u ft Compaction Remarks
Tests Taken in Trench Backfill
"" Between June 16, and August 29, 1975
Storm Drain 2.0' 17.4 99.7 109.0 91.3
Easement
. Between
Lots 181 & 182
120 1 South of
Centella Street
2 Storm Drain 1.0 20.2 103.7 114.3 90.7
. Easement
Between
Lots 132 & 133
60 1 North of
Quebrada Cr •
3 . Storm Drain 2.0 20·.8 102.0 110.6 92.2
Quebrada Cr.
Sta. 19+45
4 Storm Drain 1.0 25.0 97.0 111.2 87.2
Segovia Way
Stat 42+30
5 Storm Drain 2.0 25.8 96.8 109.0 88.9
Estancia St.
Stat 8+63
6 Storm Drain 1.0 17.4 100.2 111. 1 90.2.
Easement
Lot 190
7 Storm Drain 2.0 15.5 111.4 118.3 94.2
Quebrada Cr.
Sta. 13+15
8 Storm Drain ' 2.0 19.6 108.5 114.3 94.9
Easement
Lot 188
9 Storm Drain 3.0 15.8 101.0 111.2 90.8
Easement
Lot 187
10 Storm Drain 2.0 16.3 102'. 1 113.2 90.2
Segovia Way
Stat 22+40
* Indicates depth of backfill over top of pipe
BENTON ENGINEERING, INC.
r' Project No. 74-11-270 • -4-e December 16, 1975
" La Costa Land Company
TABLE OF TEST RESULTS (CONT.)
Depth Maximum
Approx-of Fill Field Dry Dry
Test imate at Test MOlsture Density Density Percent
No. Location in Feet % dry wt Ib/cl;I ft Ib/cu ft Compaction Remarks
11 Storm Drain 1.0 18. 1 100.9 113.3 89.0
Segovia Way
Sta. 20+65
12 Storm Drain 2.0 14.8 98.4 113.3 86.8
Segovia Way
Sta. 17+00
13 Storm Drain 1.0 12.5 104.0 113.8 91.5
Segovia Way
Sta. 14+70
14 Storm Drain 3.0 15.0 100.2 111.2 90. 1
Easement
Between
Lots 181 & 182
120' South of
Cente Ila Street
15 Sewer 3.0 17.3 110.2 119.3 92.4
Estancia St.
Sta. 3+62
16 Sewer 4.0 19.(> 92'.2 109.,0 84.5 Reworked
Estancia St.
Sta.6+32 :
17 Sewer 5.0 26.6 98.7 109.0' 90.5 Check on #16
Estancia St.
Sta. 6+32
18 Sewer 2.0 14.7 100.3 111.2 90.2
Easement
Between
Lots 181 & 182
60' South of
Centella Street
19 Sewer 4.0 13.7 107.8 115. 1 93.5
Easement
Between
Lots 181 & 182
" : 120' South of
Cente 110 Street
20 Sewer 3.0 16.4 99.0 109.0 90.9
Easement
Between
Lots 131 & 132
70' North of
Quebrada Cr.
BENTON ENGINEERING. INC.
r' Pr.oject No. 74-11-27D • -5-e' December 16, 1975
,. La CQsta Land Company
TABLE OF TEST RESULTS (CONT.) . -"-
Depth Maximum
Approx-of Fill Field Dry Dry
Test imate at Test Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
21 Sewer 5.0 16.2 103.0 114.3 90.0
Easement
Between
Lots 131 & 132
80' North of
Quebrada Cr.
22 Sewer 4.0 16.8 101.2 118.3 85 .• 5
Quebrada Cr.
Sta. 19+11
23 Sewer 3.0 23.1 99.2 112.0 88.7
Quebrada Cr.
S.ta. 17+34
24 Sewer 4.0 20.6 98.5 112.0 87.9
Quebrada Cr.
Sta. 15+63
25 Sewer 5.0 25.6 94.7 109.0 86.8
Quebrada Cr.
Sta .• 14+16
26 Sewer 3.0 8.4 1'03.9 115.3 90.1
Quebrada Court
Sta. 0+91
27 Sewer 4.0 15.9 102.9 115. 1 89.4
Quebrada Cr.
Sta. 2+15
28 Sewer 3.0 26.6 93.4 109.0 85.6
Segovia Way
Sta. 31+66
29 Sewer 4.0 27.7 93.3 . 109.4 85. 1
Segovia Way
Sta. 36+05
30 Sewer 5.0 26.0 94.2 109.0 86.5
Segovia Way
Sta. 38+60
31 Sewer 3.0 24.6 96.0 109.0 88.0
Segovia Way
Sta. 41+53
32 Sewer 4.0 27.0 96.4 109.0 88.4
Serrano Dr.
,
Sta. 1+90
BENTON ENGINEERING, INC.
,.' Project No. 74-11-270 • -6-e December 16, 1975
La Costa Land Company
TABLE OF TEST RESULTS (CaNT.)
Depth Maximum
Approx-. of F'ill Field Dry Dry
Test imate at Test Moisture Density Density Percent
No. Location in Feet % dry wt ,Ib/cu ft Ib/cu ft Compaction Remarks
33 Sewer 3.0 22. 1 1.00.3 113.7 88.2
Quebrada Cr.
Sta. 11+00
34 Sewer 4.0 23.5 95.3 112.1 85.0
Quebrada Cr.
Sta. 7+70
35 Sewer 2.0 19.0 97.8 112.6 86.8
Ql,Iebrada Cr.
Sta. 5+80
36 Sewer 3.5 22.4 99.1 113.3 87.5
Segovia Ct.
Sta. 0+55
37 Sewer 3.0 22.8 99.0 109.0 90.8
Easement
Between
Lots 126 & 127
38 Sewer 4.0 26.7 97.6 109.0 89.5
Estancia St.
Sta. 8+59
39 Sewer 5.0 23.3 95.4 114.3 83.4 Reworked
Segovia Way
Sta. 29+71
40 Sewer 5.0 21.5 103.7 119.1 87.0 Check on 1139
Segovia 'Way
Sta. 29+71
41 Sewer 3.0 18.6 95.5 112.0 85.4
Segovia Way
Sta.26+56
42 Sewer 5.0 23.8 97.6 112.0 87.1
Segovia Way
Sta. 23+86
43 Sewer 4.0 19'.6 102.7 115.1 89.2
Segovia Way
Sta. 19+85
44 Sewer 5.0 17. 1 109.1 115. 1 94.7
Gaviota Cr.
Sta. 1+95
45 ' Sewer 4.0 12.6 105.2 118.5 88.9
Gaviota Cr.
Sta. 3+99
BENTON ENGINEERING, INC.
r Project No. 74-11-270 e -7-e December 16, 1975
, . ~a Costa Land Company
r', :..-> TABLE OF TEST RESULTS (CaNT.)
Depth Maximum
Approx-of Fill F.ield Dry Dry
T~st imate at Test Moisture Density Density Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
46 Sewer' 4.0' 17.6 99.0 115. 1 86.0' / Gaviota Cr.
S'ta. 6-+91 / 47-SeWer 3.0' 16.8 10'2.5 118.3 86.6
Gavlota Cr.
Sta. 9+85
48 Sewer 5.0' 18.5 10'3 .• 2 116.7 88.4
Gaviota Cr.
Sta. 11+98
49 Sewer 5.0' 9.4 104.1 118.5 87.9
Gaviota Place
Sta. 0'-1-63
50' Sewer 3.0' 20'.5 95.0' 111.0' 85.6
Gabacho St.
Sta. 3+01
51 Sewer 4.0' 19.0' 10'4.2 115.1 90'.5
Gabacho St.
Sta. 1+34
52 Water 2.0' 14.4 101.6 .10'9,.8 92.5
Quebrada Cr.
Sta. 20'+32
53 Water 2.0' 16.1 ' 110'.2 115.3 95.6
Quebrada Cr.
Sta. 17-1-66
54 Water 2.0 15.3 104.9 114.2 91,.'9
Quebrada Cr.
Sta. 14+66
55 Water 2.0' 19.4 10'5.9 114.2 92.7
Quebrada Court
Sta. 0'+90'
56 Water 2.0' 22.4 10'2.6 114.2 89.9
Quebrada Cr.
Sta. 11-1-66
57 Water 2.0' 23.6 10'1.2 10'9.8 92.2
Quebrada Cr.
Sta. 8-1-66
58 Water 2.0' 18~6 10'1.2 114.9 8S 0 1
Quebrada Cr.
Sta. 5-1-66
59 Water 2.0' ' 15.7 10'7.3, 114.9 93.4
Quebrada Cr.
Sta. 2-1-66
BENTON ENGINEERING, INC.
r' Project No. 74-11-27D e -8-e December 16, 1975
La Costa Land Company
TABLE OF TEST RESULTS (CONT.)
Depth Maximum
Approx-of Fill Field Dry Dry
Test imat.e at Test Moisture Density Density· Percent
No. Location in Feet % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
60 Water 2.0 12. 1 94.3 109.0 86.5
Estancia St.
Sta. 3+00
61 Water 2.0 17.2 93.4 109.0 85.7
Estancia St.
Sta. 6+00
62 Water 2.0 18.5 103.8 115.3· 90.0
Serrano Dr.
Sta. 4+40
63 Water 2.0 11.4 111.4 118.6 93.9
Serrano Dr.
Sta. 0+52
64 Water 2.0 24.6 94.2 109.0 86.4
Estancia St.
Sta. 9+00
65 Water 2.0 17.7 110.1 118.9 92.6
Segovia Way
Sta.43+34
66 Water 2.0 22.2 100.3 112.6 89.1
Segovia Way
Sta. 38+34
67 Water 2.0 27.0 94.6 108.5 87.2
Segovia Way
Sta. 33+34
68· Water 2.0 23.5 95.2 108.5 87.8
Segovia Ct.
Sta. 0+45
69 Water 2.0 14.5 101.5 112.6 90.1
. Segovia Way
Sta. 28+34
70 Water 2 .. 0 23.2 99.5 109.0 91.3
Segovia Way
Sta. 23+34
71 Water 2.0 15.9 107.1 11-4.9 93.2
Gabacho St.
Sta. 0+50
72 Water 1.0 14. 1 107.0 115.3 92.8
Gabacho St.
Sta. 3+50
BENTON ENGINEERING, INC.
Project No. 74-11-270 e -9-• December 16! 1975
La Costa Land Company
TABLE OF TEST RESULTS (CONT.)
Depth Maximum
Approx-of Fill Field Dry Dry
Test imate at Test Moisture Density Density Percent
No. Location in Feet 0/0 dry wt Ib/cu ft Ib/cu ft Compaction Remarks
73 Water 2.0 ' 18. 1 109.1 115.3 9-4.6
Gaviota Cr.
Sta. 12+60
74 Water 2.0 20.0 106.1 112.2 94.5
Gaviota Place
Sta. 0+60
75 Water '2.0 17.4 106.4 115.3 92.3
Gaviota Cr.
Stq. 7+60
76 Water 2.0 16.6 105.,1 115.3 91.1'
Gaviota Cr.
Sta. 2+60
Maximum
Approx-Type"of Field Dry Dry
Test imate Matedal Moisture Density Density Percent
No. Location Tested 0/0 dry wt Ib/cu ft Ib/cu ft 'COITipoction Remarks
Results of Tests Taken in Subgrade,
Subbase Qnd Bqse MQ.teriql
1 Segovia Way Subgrade 8.3 104.7 113.3 92.4
Sta. 9+10
2 Segovia Way Subgrade 6.5 102.2 118.6 86.3 .Reworked
Sta. 1·7+00
3 Rancho Santa Subgrade 9.3 109.3 118.6 92.2
Fe Road
Sta. 159+00
4 Segovia Way Subgrade 10.7 112.7 119.8 94.1
Sta. 7+50
5 Segovia Way Subgrqde 9.7 111.2 118.3 94.0
Sta. 9+50
6 Segovia Way Subgrade 10.1 113.8 119.8 95.0
Sta. 19+75 0.5Fill
7 Segovia Way SubgradE:l 10.2 113.2 119 •. 8, 94.6
Sta. 15+75
8 Rancho Santa Subgrade 11.3 106 .. 6 113.3 94.0
Fe Road
Sta. 152+00
BENTON ENGINEERING •. INC.
Protect No. 74-11-270 e -10-e December 16, 1975
La Costa Land Company
TABLE OF TEST RESULTS (CaNT.)
MaximtAl'!
Approx-Type of Field Dry Dry
Test . imate Material Moisture Density Density Percent
No. Location Tested' % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
9 Segovia Way Subgrade 9.5 111.0 118.3 93.8
Sta. 22+00 0.5 Fill
10 Segovia Way Subgrade 10.4 106.1 115.1 92.2
Sta. 25+00
11 Segovia Way Subgrade 10.9 112.8 118.3 95.4
Sta. 28+00
12 Segovia Way Subgrade 11.3 113.6 120.0 94.6
Sta. 31+00
13 Segovia Way Subgrade 11.3 114.8 120.0 95.7
Sta. 34-+-00
14 Rancho Santa Subgrade 11.3 103.3 113.0 91.4
Fe Road
Sta. 148+00
15 Rancho Santa Subgrade 11.6 107.7 115. 1 93.6
Fe Road
Sta. 154+50
16 Segovia Way Subgrade 12.0 106.1' 111.2 95.4
Sta. 37+10
17 Quebrada Cr. Subgrade 11.5 104.2 115.1 90.6
Sta. 20+70
18 Quebrada Cr. Subgrade 11.9 110.0 118.3 92.9
Sta. 15+50
19 Segovia Way Subgrade 12.5 108.3, 118.3 91.6
Sta. 42+00
20 Quebrada Cr. Subgrade 9.8 103.1 111.2 92.8
Sta. 8+00
21 Rancho Santa Subgrade 10.0 107.2 111.2, 96.3
Fe Road 1.0 Fill
Sta. 147+50
22 Gavlota Place Subgrade '9.0 113. 1 120.0 94.3
Sta. 2+00
23 Gaviota Cr. Subgrade 11.4 nO.l 118.3 93. 1
Sta. 11+50
24 Gaviota Cr. Subgrade 9.1 106.9 118.3 90.3
Sta. 3+00
25 Serrano Dr. Subgrade 8./3 113.2 120.0 94.4
Sta. 5+50
26 Quebrada Cr. Subgrade 10.8 111.4 118.3 94.1
Sta. 3+00
27 Estancia St. Subgrade 10.0 113.2 118.3 95.7
Sta. 4+00
BE;NTON J;NGINEERINC:;. INC.
Project No. 74-11-270 -11-e December 16, 1975
. La Costa Land Company
TABLE OF TEST RESULTS (COI:'JT.)
Maximum
Approx-Type of Field Dry Dry
Test imate Material Moisture Density Density Percent
No. Location Tested % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
28 Rancho Santa Subbase 11.3 109.6 113.3 96.7
Fe Road
Sta. 28+00
29 Segovia Way Subbqse 9.5 109.7 113 .. 3 96.8
Sta.21+00
30 Segovia Way Subbase 8.9 J06.1 111 .2 95.4
Sta. 16+25
31 Segovia Way Subbase 11.1 107.5 113.3 95.0
Sta. 13+00
32 Segovia Way Subbase 12.9 105.9 111 .2 95.0
Sta. 10+00
33 Segovia Way Subbase 11.5 109.8 113,.3 96.7
Stat 8+75
34 Segovia Way Subbase 14.2 108.3 113.3 95.6
Sta. 7+80
35 Gabacho St. Subgrade 12.5 112.3 120.0 93.6
Sta. 1+30
36 Gabacho St. Subbase 13.2 109.9 113.3 96.8
Sta. 0+65
37 Gooocho St. Subbase 11.7 112 • .9 116.7 96.8
Sta.2+80
38 Segovia Way Subgrade 11. 1 110,.7 119.8 92.4 Checkon#2
Stat 17+25
39 Gaviota Cr. Subbase 15.9 111.4 113.8 97.9
Sta. 12+00
40 Gaviota Cr. Subbase 14.4 113.0 113.8 99.3
Sta. 10+20
41 Gaviota Cr. Subbase 10. 1 109.0 113.3 96.2
Sta. 8+40
42 Gaviota Place Subbase 13.4 107.7 113.3 95.0
Sta. 0+90
43 Gaviota Cr. Subbase 14.8 109.5 113.8 96.3
Sta. 6+25
44 Gaviota Cr. Subbase 11. 1 110.8 113.8 97.4
Stat 4+00
45 Gaviota Cr. Subbase 14.'1 111.9 113.8 98.4
Sta. 1+50
46 Rancho Santa Subbase 12.9 102.7 113.3 90.5 Rewor-ked
Fe Road
Sta. 158+30
BENTON ENGlfIIEERING. INC.
• Project No. 74-11-27D e -12-December 16, 1975
La Costa Land Company , .
TABLE OF TEST RESULTS (CONT.) --. --
Maximum
Approx-Type of Field Dry Dry
Test imate Material Moisture Density Density Percent
No. Location Tested % dry wt Ib/ cu ft Ib/cv ft Compaction Remarks
47 Rancho Santa Subbase 12.5 105.6 . 113~3 93.2 Reworked
Fe Road
Sta. 154+00
48 Quebrada Ct. Subgrade 12.0 112.8 118.5 95.2
Sta. 0+60
49 Rancho Santa Subbase 9.6 110 • .9 113.3 97.7 Check on #46
Fe Road
Sta. 158+40
50 Rancho Santa Subbase 12.6 109~5 113.3 96.5 Check on #47
Fe Road
Sta. 154+50
51 Rancho Santa Subbase 11.2 112.2 113.8 98.7
Fe Road
Sta. 149+00
52 Ran ch 0 Santa Subbase 10.8 108.8 113.8 95.6
Fe Road
Sta; 147+50
53 Quebrada Cr. Subbase 10.2 107.9 113.3 95.2
Sta. 0+90
54 Quebrada Cr. Subbase 10.1 107.8 113.3 95. 1
Sta. 4+60
55 Quebrada Cr. Subbase 11.9 111.7 113.8 98.Q
Sta. 8+35
56 Gaviota Cr. Base 6.3 133.1 134.6 99. 1
Sta. 9+50
57 Gaviota Cr. Base 7.3 128.9 134.6 95.8
Sta. 7+00
58 Gaviota Cr. Base 9.9 132.5 134.6 98.5
Sta. 5+00
59 Gaviota Cr. Base 5.4 132.2 134.6 98.3
Sta. 1+00
60 Gabacho St. Base 6.4 133.8 134.6 99.4
Sta. 1+50
61 Gaviota Place Base 6.6 131.0 134.6 97.4
Sta. 0+55
62 Rancho Santa Base 7.2 131.8 134.6 98.0
Fe Road
Sta. 157+00
63 Rancho Santa Base 6.4 130.0 134.6 96.6
Fe Road
Sta. 153+50
BENTON ENGINEERING, ·INC.
Project No. 74":' 11-270 • -13-• Degember 16, 1975
La Costa Land Company
TAaLE OF TEST RESULTS (CONT.J.
Maximutn
Approx-Type of Field Dry Dry
test imate Material Moisture Density Densi.ty Percent
No. -_ Location Tested % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
64 Rancho Santa Base 6. 1 131.7 134.6 97.8
Fe Road
Sta. 149+50
65 Quebrada Cr. Subbase 12.9 111.5 113.8 98.0
Sta. 14+00
66 Quebrada Court Subbase 11.3 110.2 113.8 97.0
Sta. 1+20
67 Quebrada Cr. Subbase 10.8 113.0 113.8 99.4
Sta. 17+30
68 Quebrada Cr. Subbase 12.3 108.0 U3.8 95.0
Sta. 20+30
69 Segovia Ct. Subbase 11.9 108.2 113.8 95.2
!ita. 0+70
70 Quebrada Cr. Subbase 11.0, 109.0 113.8 ' 95.9'
Sta. 17+80
71 Segovia Way Subbase 11.0 110.0 113.8 96.9
Sta. 26+70
72 Segovia Way Subbase 11.2 109. 1 113.8 96.0
Sta. 30+80
73 Segovia Court Subbase 9.5 108.0 11.3.3 95.3
Sta. 0+80 . 74 Segovia Way Subbase 11.6 113.0 113.8 9904
Sta. 38+30
75 Segovia Way Subbase 10. 1 108.0 113.3 95.3
Sta. 42+50
76 Quebrada Cr. Subbase 9.5 108.5 113.3 95.·6
Sta. 0+50
77 Estancia St. Subbase 12.0 111. 1 113.3 98. 1
Sta. 7+50
78 Estancia St. Subbase 11.8 110.0 11'3.3 '97.0
Sta. 3+60
79 Serrano Dr. Subbase 10.,2 109.4 113.3 96.5
Sta. 2+50
80 Centella St. Subbase 10.7 112.2 113.8 98.7
Sta. 1+80
81 Quebrada Cr. Base 6.1 121.0 134.6 90.0 Reworked
Sta. 4+30
82 Quebrada Cr. Base 5.0 129.7 134.6 96.4 Check 'on 1181
Sta. 4+30
83 Quebrada Cr. Base 4.4 129.6 134.6 96.3
Sta. 9+45
84 Quebrada Cr. Base 6.4 131.5 134.6 97.7
Sta. 14+80
BENTON ENGINEERING. INC.
Project No. 74-11-270 e -14-•• December 16, 1975
" L(,ICosta Land Company .
TABLE OF TEST REScULTS (CONT.)
MaximLlm
Approx-Type of Field Dry Dry
Test imate Material Moisture Density Density Percent
NQ. Location Tested % dry wt Ib/cu ft Ib/cu ft Compaction Remarks
85 Quebrada Cr. Base 5.2 130.0 134.6 96.6
Sta. 18+00
86 . Quebrada Cr. Base 6.6 128.7 134.6 95.5
Sta. 19+70
87 Segovia Way Base 7.5 130.0 134.6 96.6
Sta. 41+50
88 Quebrada Cr. Base 9.0 131.2 134.6 97.7
Sta. 1+80
89 Serrano Dr. Base 5.0 128.5 134.6 95.5
Sta. 4+70
. 90 Cente Iia St. . Base 8.0 129.0 134.6 95.9
Sta. 0+80
91 Estancia St. Base 5.5 1,28.4 134.6 95.5
Sta. 9+00
92 Estanciq St. ai:lse 5.7 131.5 134.6 97.7
Sta. 2+20
93 Segovia Way Base 5. 1 131.0 134.6 97.3
Sta. 36+20
94 Segovia Court Base 6.7 128.0 134.6 95,0
Sta. 1+10
95 Segovia Way Base 5. 1 129.0 134.6 95.8
Sta. 27+80
96 Segovia Way Base 9.2 131.5 134.6 97.7
Sta. 23+30
97 Segovia Way Base 6.4 129.2 134.6 96.0
Sta. 17+50
98 Segovia Way Base 8.S 132.0 134.6 98.2
Sta. 12.+30
99 Segovia Way Base 7.4 134.0 134.6 99.5
Sta. 7+80
BENTON ENGINEERING, INC.
Project No. 74-11..,27D A
La Costa Land Company •
-15-'. December 16, 1975
LABORATORY TEST RE$UL TS
I
The maximum dry densities and optimum moisture contents of the major fHI materials as deter-
mined by the A.S. T.M. D 1557-70 method, that uses 25 blows of a 10 pound rammer falling
from ,a height of 18 inches on each of 5 layers in a 4 inch diameter 1/30 cubic foot c;:ompaction
cyl inder I are presented as follows:
Soil Description
Li,ght brown and I ight ,gray brown clayey fine sand
Light yellow brown fine sandy silt
Light gray brown silty fine sand
Light gray clayey fine sand
Gray brown fine sandy clay
Yellow brown silty fine sand
Light brown and gray brown silty sand with clay binder
Light gray with yellow steaks clayey fine sand
Light brown and yellow brown, clayey fine to medium sand
Light brown and I ight gray sl ightly silty fine sand
Brown gray silty clay
Yellow brown silty fine to medium sand
Olive gray silty clay
Red brown silty fine sand
Gray brown fine to medium sandy clay
Light brown gray silt
Yellow brown sil ty fine sand
Yellow brown silty fine sand to medium sand
Light yellow brown silty fine sand
Brown slightly silty fine to medium sand {D.G. Base}
BENTON, ENGINEER IN,? INC.
Maximum
Dry Density
Ib/cu ff
118.5
114.3
120.0
115.1
118.9 '
115.3
113.0
111.2
118.6
113.3
109.8
118.3
109.0
119.3
119.1
107.2
115. 1
119.8
113.8
134.6
Optimum Mois-
ture Content
% dry wt
11.2
13.6
13.5
13.5
11.0
12.7
15.5
15.3
11.3
14.2
16.2
. 12. 1
18.5
11.7
13.7
19.0
13.5
12.0
12.5
7.7