HomeMy WebLinkAboutTract Map 9833-3 Lot 4 Rough & Fine Grading
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REPORT OF OBSERVATION AND FIELD DENSrrv TESTING
ROUGH AND FINE GRADING
U1lUTY PAD AND DRAINAGE AREA BACKFILl.
LOT 4, TRACT 9833-3
CALLE DE VELARDO
TEMECULA, CAUFORNIA
PROJECT NO. 20205-01
JUNE 18, 2000
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Prepared For:
John Gunderson
160 S. Santa Fe
Herner, California 92543
Earth Technics P.O. Box 891989, Temecula, California 92589 (909) 699-5451 "
June 18, 2000 Project No. 20205-01
John Gunderson
160 S. Santa Fe
Hemet, California 92543
SUBJECT: REPORT OF OBSERVATION AND FIELD DENSITY TESTING
ROUGH AND FINE GRADING
Utility Pad and Drainaqe Area Backfill
Lot 4, Tract 9833-3, Calle de Velardo
Temecula, California
Gentlemen:
INTRODUCTION
This report presents the results of our observation and testing
performed during construction and grading for the drainge
improvements and utility pad backfill.
The utility pad was originally constructed during backfill of the
drainge area when the adjoining site was graded in July 1999
(Earth Technics, 99209-01, Lot 5). The current pad fine grading
and drainage culvert and facilities improvements and backfill was
tested during the final week in May 2000. The results of our
Field Density Tests obtained during grading are tabulated in
Table I, Results of Compaction Tests. The approximate locations
of the tests are shown on the Plot Plan, Plate 1. The 20-scale
Grading Plans were prepared by Manning Engineering, Temecula,
dated September 9, 1999, and were used to plot our data and guide
the grading, along with field staking.
proiect DescriDtion
The grading in general consisted of reworking the existing fill,
and constructing and backfilling the drainage facilities adjacent
to Calle de Velardo.
PurDose of Gradina
The purpose of the grading was to construct a utility pad in the
area of the former filled drainage, and construct drainage
facilities in accordance with City of Temecula requirements.
1-
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2000
4000
SCALE
feet
INDEX MAP
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OF
LOT 4, TRACT 9833-3
CALLE DE VELARDO
TEMECULA, RIVERSIDE COUNTY
CALIFORNIA
.3
SOURCE: U.S.G.S. 7J, MIN. QUAD. PECHANGA 1988 CPR 1988)
20205-01
Page J
GRADING PROCEDURES
Gradina procedures
The existing fill and drainage swale was stripped of the light
growth and grasses, in the areas to receive fill, and removed
off-site. The areas to receive fill in the drainage swale were
then over excavated 2 1/2 - 5 feet or until the dense underlying
sedimentary bedrock was encountered. The fill materials were
brought to near optimum moisture utilizing a 1.5 inch fire hose
when necessary, and compacted with a caterpillar D6H bulldozer,
and rubber-tired 966F front-end loader.
The grading contractor was Gary Ingram, Temecula.
TESTING
Field Densitv Testina
Field density testing was performed in accordance with ASTM
D1556-64 (Sand Cone Method). The elevations and the results of
the field density tests are presented in Table I of this report.
The approximate location of the tests are shown on the Grading
Plan, Plate 1.
Maximum Densitv Determinations
Maximum density/optimum moisture determinations were made from
representative samples of on-site soils used in the fill
operations. The tests were performed in accordance with ASTM D
1557 which consist of compacting 5 equal layers of soil in a 1/30
cubic foot volume mold with 25 blows of a 10 pound hammer falling
18 inches. The results of the Maximum density/optimum
determination are presented herein as Table II, Laboratory Test
Results.
SUMMARY
Our description of grading and backfill operations, as well as
observations and testing services, were limited to those grading
operations performed between May 22 and 31, 2000. The
conclusions and recommendations contained herein have been based
upon our observation and testing as noted. It is our opinion,
that the work preformed in the areas denoted has generally been
accomplished in accordance with the recommendations of the U.B.C.
Appendix Chapter 33, the Riverside County Grading Code, as
amended by Ordinance No. 457 specifications, and the requirements
of the regulating agencies and is acceptable.for its intended
purpose.
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20205-01
Page 4
No conclusions or warranties are made for areas not tested or
observed. This report should be considered subject to review by
the controlling authorities.
Larry J. Fast
R.C.E. 29150
Registration
WLS/LJF:ss
Distribution: (6) Addressee
Attachments:
Index Map - Page 2
Plate 1 - Grading Plan
Table I - Results of Compaction Tests
Table II - Summary of Maximum Density Testing
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TABLE I
. Ea~'hn'l
;'1
RESULTS OF COMPACTION TESTS
JOB NO.20205-01
NAME:GUNDERSON
DATE: 6/21/00
TEST DATE DEPTH MOISTURE UNIT DRY RELATIVE SOIL DESCRIYfION
NO CONTENT DENSITY COMPACTION TYPE
(%) (pCF) (%)
1 5/22/00 88 9.6 123.4 95.8 A FILL
2 5/27/00 95 9.8 130.3 99.6 B FILL
3 5/27/00 98 8.4 127.4 97.4 B FILL
4 5/27/00 90 8.7 119.1 92.5 A FILL
5 5/31/00 92 9.6 126.2 96.5 B FILL
6 5/31/00 97 8.6 129.8 99.3 B FILL
7 5/31/00 100 8.0 126.2 96.5 B FILL
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See plan for test locations.
SC-Sand Cone ASTM 01556-64
**Test Failed. See Retest.
DC-Drive Cylinder ASTM 02937-71
N-Nuc1ear ASTM 3017-78
1
TABLE II
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LABORATORY TEST RESULTS
NAME: GUNDERSON
DATE: 6/21/00
JOB NO. 20205-01
.
SOIL TYPE CLASSIFICATION MAXIMUM OPTIMUM
DENSITY (PFC) MOISTURE (%)
.
A ON-SITE LIGHT REDDISH BROWN 128.7 9.7
SILTY SAND WITH MINOR GRAVEL
B ON-SITE DARK YELLOWISH BROWN 130.8 10.6
SILTY SAND WrrRACEOF CLAY 5%
ROUNDED GRAVEL TO 1"
B