HomeMy WebLinkAboutParcel 35 Geotechnical Report & Compaction Results Precise Grading
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Coq~oration
-Soil EngineeringandConsullinllServices-Engine€ringGeoloqy -CompactionTestinll
-Inspections .ConstruclionMaterialsTeslinll.laborato~Testinll.PercolalionTesling
-Geolagy.WalerResourceSludies . PI\ase 1&11 Environmenlal SileAssessmenls
ENVIRONMENTAL & GEOTECHNIC~ECIEfVEb
JAN 051999
CITY OF TEMt:\';ULk
ENGINEERiNG DEPARTMEl. i
GeOTECHNICAL REPORT AND COMPACTION TEST RESULTS
PRECISE GRADING OPERATIONS
Zevo-Sorrento Development
Lot 35 of Parcel Map 28471-1, Zevo Drive
City of T emecula, County of Riverside, California
Project Number: T1521C
January 5, 1999
Prepared for:
Sorrento Development
674 Via Del La Valle, Suite 207
olana Beach, California 92075
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Sorrento Development
Project Number: T1521C
TABLE OF CONTENTS
, SECTION NUMBER AND TITLE
PAGE
'1~0 PROJECT LOCATION AND DESCRIPTION ....................................................................1
1.1 PROJECT LOCATION ................................................................................................ 1
1.2 PROJECT DESCRIPTION ...........................................................................................1
1.3 SITE DESCRIPTION ... ............................................................................................... 2
: 2.0 SCOPE OF WORK ....................................................................................................2
,2: 1 TIME OF GRADING ....................................................................................................2
,2: 1 CONTRACTOR AND EQUIPMENT................................................................................. 2
,2.2 GRADING OPERATIONS............................................................................................ 2
'3.0 TESTING ..................... ........ ... ........... ................................................ ............... .......2
'3.1 FIELD TESTING PROCEDURES................................................................................... 2
3.1.1 LABORATORY TESTING .............................................................................. 3
3.1.2 MOISTURE-DENSITY RELATIONSHIP TEST ................................................... 3
:3.2 EXPANSION INDEX TEST...........................................................................................3
14.0 EARTH MA TERIALS.................................................................................................. 3
'5.0 FOUND~TION DESIGN RECOMMENDATIONS.................................................3
;6.0 CLOSURE ............................................................................................................4
~APPENDIX
ITEST RESULTS
'DRAWINGS
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EnGEN Corporation
:~EN
,January 5, 1999
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CO!poration
-Soil Engineering and ConsullingServices-EngineeringGeology -Compaction Testing
-lnspeclions-ConstruclionMaterialsTeSlinll-LaboraloryTesling .PercolalionTesling
. Geology. Water Resource Studies . Phase I & II Environmental Sile Assessments
ENVIRONMENTAL & GEOTECHNICAL ENGINEERING NETWORK
'Mr. Mike Reeves,
!Sorrento Development
'674 Via Del La Valle, Suite 207
'Solana Beach, California 92075
(619) 793-9472 I FAX (619) 793-9276
'Regarding:
GEOTECHNICAL REPORT AND COMPACTION TEST RESULTS
PRECISE GRADING OPERATIONS
levo-Sorrento Development
Lot 35 of Parcel Map 28471-1, levo Drive
City of Temecula, County of Riverside, California
Project Number: T1521C
'References: 1.
EnGEN Corporation, Updated Geotechnical Study, Proposed
Structure, Parcel 35 of P.M. 28471-1, City of Temecula, County of
Riverside, CA Project Number: T1521-UGS, report dated September
8, 1998.
2.
New Venture Design Inc., Preliminary Site Plan, Lot 39, levo Drive,
plans dated August 11, 1998.
Schaefer Dixon Associates, Geotechnical Mass Grading, Report No.
1 Parcel Map 21383 (Core I, Phase I), City of Temecula, County of
Riverside, California, report dated August 1, 1991.
3.
:Dear Mr. Reeves:
:According to your request and signed authorization, EnGEN Corporation has performed
field observations, sampling, and in-place density testing at the above referenced site.
:Submitted, herein, are the test results and the supporting field and laboratory data.
11:0 PROJECT LOCATION AND DESCRIPTION
11.1 PROJECT LOCATION
The subject site consists of approximately 2.5 acres, located on levo Drive, City of
Temecula, County of Riverside, California.
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Sorrento Development
Project Number: T1521 C
January 1999
Page 2
1.3 SITE DESCRIPTION
Prior to grading operations, topography and surface conditions of the site were
relatively'f1at with surface drainage to the north at a gradient of less than 6 percent.
2.0 SCOPE OF WORK
2.1 TIME OF GRADING
This report represents geotechnical observations and testing during the construction
operations' from December 16, 1998 through December 22, 1998.
2.1 CONTRACTOR AND EQUIPMENT
The grading operations were performed by Del Rio Enterprises through the use of
one (1) CAT 980 Loader, and one (1) water truck.
:2~2 GRADING OPERATIONS
Grading within the subject site consisted of an over-excavation and replacement
operation. Over-excavation was performed in the building pad area to a depth of 3.5
feet below finish grade elevation and to a distance of 5.0 feet outside the proposed
structure. The exposed bottoms were scarified and moisture conditioned to a depth
of 12 inches then compacted to 90 percent. Fill was placed in lens thicknesses of 6
to 8 inches, thoroughly moisture conditioned to near optimum moisture content, then
compacted to a minimum of 90 percent relative compaction. Moisture conditioning of
the on-site soils was performed during the compaction process, through the use of a
water truck.
The pad area was generally graded to the elevations noted on the Grading Plan.
However, the actual pad location, dimensions, elevations, slope locations and
inclinations, etc. were surveyed and staked by others and should be verified by the
Project Civil Engineer.
:3:0 TESTING
!3.1 FIELD TESTING PROCEDURES
Field in-place density and moisture content testing were performed in general
accordance with ASTM-D-2922-81 (90) and ASTM-D-3017-88 procedures for
determining in-place density and moisture content, respectively, using nuclear gauge ~
EnGEN Corporation
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Sorrento Development
Project Number. T1521C
January 1999
Page 3
equipment. Relative compaction test results were within the 90 percent required for
all material placed and compacted. Test results are presented in the Appendix of this
report. Fill depths and test locations (by station numbers when applicable) were
determined from review of the referenced grading plans.
3.1.1 LABORATORY TESTING
The following laboratory tests were performed as part of our services during the
grading of the subject site. The test results are presented in the Appendix of this
report.
3.1.2 MOISTURE-DENSITY RELATIONSHIP TEST
Maximum dry density - optimum moisture content relationship tests were conducted
on samples of the materials used as fill. The tests were performed in general
accordance with ASTM D1557-91 procedures. The test results are presented in the
Appendix (Summary of Optimum Moisture Content I Maximum Dry Density
Relationship Test Results).
3.2 EXPANSION INDEX TEST
A soil sample was obtained for expansion potential testing from the building pad area
upon completion of precise grading of the subject site. The expansion test procedure
utilized was the Uniform Building Code Test Designation 18-2. The material tested
consisted of silty sand with gravel and trace silt, which has an Expansion Index of 3
which is classified as very low expansion potential. The results are presented in the
Summary of Expansion Index Results in the Appendix of this report.
4.0 EARTH MATERIALS
The natural earth materials encountered on-site, generally consisted of brown to red
brown silty sand with gravel and trace silt.
5.0 FOUNDATION DESIGN RECOMMENDATIONS
No conditions were encountered which would cause a change in the previously
provided design and construction recommendations. As a result, design and
construction should adhere to the recommendations provided in the Referenced No. ..s
1. "Updated Geotechnical Study".
EnGEN Corporation
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Sorrento Development
Project Number: T1521C
January 1999
Page 4
6:0CLOSURE
This report has been prepared for use by the parties or project named or described
above. It mayor may not contain sufficient information for other parties or purposes.
The findings and recommendations expressed in this report are based on field and
laboratory testing performed during the precise grading operation and on generally
accepted engineering practices and principles. No further warranties are implied or
expressed beyond the direct representations of this report.
Thank you for the opportunity to provide these services. If you should have any questions
regarding this report, please do not hesitate to contact this office at your convenience.
JDG/OB:rr
Distribution: (4) Addressee
FILE: EnGEN/ReportingCfT1521C Sorrento Development, Precise Grading
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EnGEN Corporation
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Sorrento Development
Project Number: T1521 C
Appendix Page 1
APPENDIX
TEST RESULTS
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EnGEN Corporation
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Sorrento Development
Project Number: T1521 C
Appendix Page 2
FIELD TEST RESULTS
(SUMMARY OF FIELD IN-PLACE DENSITY TEST RESULTS)
(NUCLEAR GAUGE TEST METHOD)
I Test
No.
Test
0ate
(1998)
Depth Soil Max Moisture Dry Relative Required
Elev. Type Density Content Density Compaction Compactio
(FT) (PCF) (%) (PCF) (%) (%)
1031 1 127.4 12.1 125.5 98.5, 90
1031 1 127.4 11.8 123.8 97.2 90
1032 1 127.4 9.2 118.4 92.9 90
1032 1 127.4 7.0 116.0 91.1 90
F.G. 1 127.4 6.1 127.0 99.7 90
F.G. 1 127.4 7.8 119.6 93.9 90
F.G. 1 127.4 9.0 120.1 94.3 90
F.G. 1 127.4 9.7 125.1 98.2 90
F.G. 2 123.5 8.5 118.9 96.3 90
Test Locations
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12-16 See Map
12-16 See Map
12-22 See Map
12-22 See Map
12-22 See Map
12-22 See Map
12-22 See Map
12-22 See Map
12-22 See Map
I ndicates Finish Grade Elevation
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EnGEN Corporation
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Soil
Type
Soil
I Type
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Depth
(FT)
1.5
Sorrento Development
Project Number: T1521C
Appendix Page 3
Sl:IMMARY OF OPTIMUM MOISTURE CONTENT I
M1o.XIMUM DRY DENSITY RELATIONSHIP TEST RESULTS
ASTM D1557-91
Soil
Description
(USCS Symbol)
Silty Sand, Brown with Gravel (SM)
Sand, Trace Silt, Red Brown (SP)
Maximum
Dry Density
(PCF)
127.4
123.5
SUMMARY OF EXPANSION INDEX TEST RESULTS
Dry Density
(PCF)
117.2
Moisture
Condition Before
Test(%)
9.3
Moisture
Condition After
Test (%)
15.9
Optimum
Moisture
Content
(%)
9.9
10.9
Expansion
Index
3
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EnGEN Corporation
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Sorrento Development
Project Number: T1521 C
Appendix Page 4
DRAWINGS
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EnGEN Corporation