HomeMy WebLinkAboutTract Map 3752 Lot 40 Geotechnical Investigation
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CorRoration
-SoilEngineeringandConsulting$ervices- EngineeringGeology. Compaction Testing
elnspeclions.ConslruclionMalerialsTesling.LaboraloryTesting-PercolationTesling
. Geology. Water Resource Studies . Phase I & II Environmental Site Assessments
ENVIRONMENTAL &
RING NETWORK
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March 13, 2002
MAR 1 5 2002
CITY OF TEMeCULA
ENGINEERING DEPARTMENT I
Morrison Family Trust
30425 Jedediah Smith Road
Temecula, California 92592
Attention:
Mr. Brian Silva
Regarding:
GEOTECHNICAL TESTING: CHANNEL REPAIR FILL IN-PLACE DENSITY TESTING
Morrison Property Drainage Channel Repair
Lot 48 of Tract 3752
Jedediah Smith Road
City of Temecula, Riverside County, California
Project Number: T2380-C
Reference:
John T. Reinhart, RCE, Grading Plan for Morrison Property Drainage
Channel, Lot 48 of Tract 3752, APN 922-150-008, plans dated May 17,
2001.
1.
Dear Mr. Silva:
Per your request and signed authorization, EnGEN Corporation conducted in-place density
testing from February 13, 2002 to February 28, 2002. These tests were performed in random
locations during the channel fill grading operations. Soil fills ranging from approximately 1.0 to
4.0-feet in depth were placed. Grading was accomplished with a front loader, excavator, and a
water truck. In-place density tests were performed in the channel bottom.
A 100-foot long rip~rap ramp was constructed at the box culvert outlet. At its thickest the ramp is
approximately 8-feet thick (at the culvert), tapering to approximately 1-foot thick at 100 feet south
of the culvert. This rip-rap was then covered by approximately1-foot of fill.
A series of steps were constructed in the channel bottom. The faces of the steps were covered
with rip-rap. The westerly channel slope was covered with rip-rap with an approximately 5-foot
deep key. This rip-rap was then covered by 1-foot of soil.
The scope of EnGEN Corporation's work did not include any recommendations on rip-rap
placement or design. The scope of work includes compaction testing of the fill placed in the
channel bottom only. The rip-rap descriptions above are for informational purposes only.
Compaction test results on the'soil fill in the channel bottom are presented below.
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Morrison Family Trust
Project Number: T2380-C
, March 2002
Page 2
Maximum dry density/optimum moisture content relationship tests were conducted on a sample of
the imported fill materials. The tests were performed in general accordance with ASTM D
1557-91 (1998) procedures The test results are presented in the Appendix Relative compaction
testing was performed in general accordance with ASTM D 2992-96 and ASTM D 3017-98
procedures for determining in-place density and moisture content, respectively, using nuclear
equipment. Test results are presented in the Appendix.
In-place density test results indicate a minimum of 90 percent relative compaction in the subject
fill areas.
If you have any questions concerning this report, please contact this office at your convenience.
CM/OB:hh
Distribution: (4) Addressee
FILE: EnGEN\Reporting\C\T2380_C Morrison Family Trust, Channel Repair letter
EnGEN Corporation
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I Date
(2002)
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Morrison Family Trust
Project Number: T2380-C
Appendix Page 1
SUMMARY OF FIELD IN-PLACE DENSITY TEST RESULTS
(Nuclear Gauge Test Method)
Test
No.
Location
Depth Soil Maximum Moisture Dry Relative Required Test
Or Type Density Content Density Compaction Compaction Method
Elev. (pcf) (%) (pc!) (%) (%)
-2 A1 124.1 8.9 1179 95.0 90 NG
-2 A1 124,1 84 114.2 93.2 90 NG
-2 A1 124.1 4.6 111.8 90.1 90 NG
F.G. A1 124.1 82 115.1 92.7 90 NG
F.G. A1 124.1 78 114.3 92.1 90 NG
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I 02-18 1 Channel
Bottom
02-18 2 Channel
102-18 Bottom
3 Channel
Bottom
I 02-28 4 Channel
Bottom
I 02-28 5 Channel
Bottom
F,G. Indicates Finish Grade Test
ING Indicates Nuclear Gauge
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Soil Type
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SUMMARY OF OPTIMUM MOISTURE CONTENT
MAXIMUM DRY DENSITY RELATIONSHIP TEST RESULTS
ASTM D1557-78 (1990)
Soil Description (USC Symbol)
Maximum Dry Density
(PCF)
Optimum Moisture
Content (%)
A1
Silty Sand with Clay, Light Brown (SM)
124.1
10.0
EnGEN Corporation
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Morrison Family Trust
Project No: T2380-C
Appendix Page 2
DRAWINGS
EnGEN Corporation
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