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Geotechnical. Geologic. Environmental
5741 Palmer Way . Carlsbad, California 92008 . (619) 438-3155 . FAX (619) 931-0915
August 5, 1997
W.O. 2022-C/E-SC
Mr. Milton Gee
c/o Urbon Architecture
4353 Osprey Street
San Diego, California 92107
AUG 12 1997
Attention:
Mr. Peter Urbon
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Subject:
Compaction Report of Construction Improvements, Santa Fe Animal Clinic
& Law Office, 1205 Rubenstein Avenue, Encinitas, California
Dear Sir:
This report presents a summary of the soils engineering observation and testing services
provided by GeoSoils, Inc. (GSI), for the utility trench backfill and subgrade and aggregate
base testing for the subject site.
UTILITY LINE TRENCH BACKFILL
Select native onsite soils and import soils were used as backfill for the sewer utility
trenches. The required compaction was achieved by mechanical means. The minimum
compaction required was 90 percent of the laboratory standard.
SUBGRADE AND AGGREGATE BASE TESTING
The exposed subgrade was tested to a depth of 12 inches. Our tests indicate that the
materials meet or exceed the minimum requirement of 95 percent relative compaction of
the laboratory standard. Our tests indicate that the aggregate base materials meet or
exceed the minimum requirement of 95 percent relative compaction of the laboratory
standard.
FIELD TESTING
1.
Field density tests were performed using nuclear densometer ASTM test methods
0-2922 and 0-3017. The test results are presented in the attached Table 1.
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2.
Field density tests were taken at periodic intervals and random locations to check
the compactive effort provided by the contractor. Based upon the operations
observed, the test results presented herein are considered representative of the
compacted fill.
3.
Visual classification of the soils in the field was the basis for determining which
maximum density value to use for a given density test.
LABORATORY TESTING
The laboratory maximum dry density and optimum moisture content for the major soil
types within this construction phase were determined according to test method ASTM D-
1557. The following table presents the results:
Soil T e
Maximum Density
c
A - Silty Sand, Yellowish Brown
B - A re ate Base
130,0
138.0
10.0
7.0
REGULATORY COMPLIANCE
Placement of compacted backfills under the purview of this report have been completed
using the observation and selective testing services provided by representatives of GSI.
Earthwork was performed in general compliance with the Grading Code of City of
Encinitas, California.
Our findings were made in conformance with generally accepted professional engineering
practices, and no further warranty is implied or made. GSI assumes no responsibility or
liability for work, testing, or recommendations performed or provided by others. This report
is subject to review by the controlling authorities for this project.
Mr. Milton Gee c/o Urbon Architecture
Santa Fe Animal Clinic & Law Office, 1205 Rubenstein Avenue
File: e:\wp 7\2000\2022ce.cro
GeoSoils, IRe.
w.O.2022-C/E-SC
August 5, 1997
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We appreciate this opportunity to be of service. If you have any questions, please call us
at (760) 438-3155.
Respectfully submitted,
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David W. Skelly
Civil Engineer, GE
GeoSoils, Inc.
Enclosures: Table 1 - Field Density Test Results
Distribution: (4) Addressee
Mr. Milton Gee c/o Urbon Architecture
Santa Fe Animal Clinic & Law Office. 1205 Rubenstein Avenue
File: e:\wp7\2000\2022ce.cro
GeoSoils, IRe.
w.O. 2022-C/E-SC
August 5, 1997
Page 3
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Table 1
FIELD DENSITY TEST RESULTS
TEST DATE TEST LOCATION ELEVATION MOISTURE DRY RELATIVE TEST SOIL
NO. OR CONTENT DENSITY COMPACTION METHOD TYPE
DEPTH (ft.) (%) (pet) (%)
S-1 4/25/97 SEWER LATERAL -2.0 9.0 118.0 90.8 ND A
S-2 4/25/97 SEWER LATERAL -1.0 9.7 120.3 92.5 ND A
5-3 5/19/97 UNDER SLAB PLUMBING SG 13.9 117.0 90.0 ND A
SG-1 5/1/97 SANTE FE SG 10.6 128.3 98.7 ND A
SG-2 5/1/97 SANTE FE SG 13.3 123.5 95.0 ND A
SG-3 5/1/97 RUBENSTEIN SG 9.9 124.0 95.4 ND A
SG-4 TEST # NOT USED
SG-5 TEST # NOT USED
SG-6 5/3/97 CROSS GUTTER SG 10.5 124.9 96.1 ND A
SG-7 6/11/97 RUBENSTEIN CROSS GUTTER SG 10.7 125.0 96.2 ND A
SG-8 6/17/97 RUBENSTEIN AVE. SG 8.6 124.0 95.4 ND A
SG-9 6/17/97 SANTE FE AVE. SG 9.1 124.6 95.8 ND A
SG-10 7/16/97 DRIVEWAY APPROACH SG 10.3 123.8 95.2 ND A
SG-11 7/16/97 DRIVEWAY APPROACH SG 9.8 124.3 95.6 ND A
SG-12 7/22/97 PARKING LOT SG 10.1 126.2 97.1 ND A
SG-13 7/22/97 PARKING LOT SG 10.3 123.5 95.0 ND A
SG-14 7/22/97 PARKING LOT SG 10.2 126.5 97.3 ND A
B-1 5/1/97 SANTE FE CURB BG 6.0 135.4 98.1 ND B
B-2 5/1/97 SANTE FE CURB BG 7.0 131.9 95.6 ND B
B-3 5/2/97 RUBENSTEIN BG 5.0 131.6 95.4 ND B
B-4 5/2/97 SANTA FE & RUBENSTEIN BG 6.8 136.4 98.8 ND B
B-5 TEST # NOT USED
B-6 TEST # NOT USED
B-7 5/3/97 CROSS GUTTER BG 6.3 134.0 97.1 ND B
B-8 5/3/97 CROSS GUTTER BG 7.1 132.3 95.9 ND B
B-9 6/11/97 CROSS GUTTER BG 6.2 133.0 96.4 ND B
B-10 6/18/97 SANTE FE BG 6.6 133.0 96.4 ND B
B-11 6/18/97 RUBENSTEIN BG 6.9 132.1 95.7 ND B
B-12 7/23/97 P-LOT BG 7.1 134.1 97.2 ND B
B-13 7/23/97 P-LOT BG 6.9 132.6 96.1 ND B
LEGEND:
B = BASE
BG = BASE GRADE
ND = NUCLEAR DENSOMETER
S = SEWER
SG = SUBGRADE
Gee
1205 Rubenstein. Encinitas
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COMPACTION REPORT OF ROUGH GRADING,
SANTA FE ANIMAL CLINIC & LAW OFFICE,
1205 RUBENSTEIN AVENUE,
ENCINITAS, CALIFORNIA
FOR
MR. MILTON GEE
C/O URBON ARCHITECTURE
4353 OSPREY STREET
SAN DIEGO, CALIFORNIA 92107
, .
W.O. 2022-B-SC AUGUST 4, 1997
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Geotechnical- Geologic - Environmental
5741 Palmer Way. Carlsbad, California 92008 . (619) 438-3155 . FAX (619) 931-0915
August 4, 1997
W.O, 2022-B-SC
Mr. Milton Gee
c/o Urbon Architecture
4353 Osprey Street
San Diego, California 92107
Attention:
Mr. Peter Urbon
Subject:
Compaction Report of Rough Grading, Santa Fe Animal Clinic & Law Office,
1205 Rubenstein Avenue, Encinitas, California
Reference:
"Preliminary Geotechnical Evaluation, Santa Fe Animal Clinic & Law Office,
1205 Rubenstein Avenue, Encinitas, California," W.O. 2022-A-SC, by
GeoSoils, Inc., dated May 3, 1996.
Dear Sir:
This report presents a summary of the geotechnical testing and observation services
provided by GeoSoils, Inc, (GSI), during the rough earthwork phase of development of the
subject site. Earthwork commenced April 21, 1997, and was completed on April 24, 1997,
Based on the observations and testing performed by GSI, it is our opinion that the building
pad appears suitable for its intended use. Utility and pavement construction will be
reported under a separate cover.
PURPOSE OF EARTHWORK
The purpose of grading was to prepare a relatively level pad for the construction of a two-
story, wood-frame office building. Prior to grading, previous structures and associated
improvements were demolished and removed from the site. In addition, an apparent
seepage pit was backfilled with Portland concrete.
ENGINEERING GEOLOGY
The geologic conditions exposed during the process of grading were regularly observed
by a representative from our firm. The geologic conditions encountered generally were as
anticipated as presented in the referenced report (GSI, 1996).
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GEOTECHNICAL ENGINEERING
Preparation of Existing Ground
1.
Prior to grading, the major surficial vegetation and previously existing development
was stripped and hauled offsite.
2.
The site was then cut to grade, and cut materials were exported from the site.
LABORATORY TESTING
Expansive soil conditions have been evaluated for the site. A representative sample of the
soils near pad grade was recovered for expansion index testing. Expansion index testing
was performed for the typical foundation soil type exposed at pad grade in general
accordance with Standard 18-2 of the Uniform Building Code, The test result indicates an
expansion index of 1 and expansion classification of very low.
CONCLUSIONS AND RECOMMENDATIONS
Unless superseded by recommendations presented herein, the conclusions and
recommendations contained in the referenced report (GSI, 1996) remain pertinent and
applicable.
REGULATORY COMPLIANCE
Processing of original/existing ground and placement of compacted fills under the purview
of this report have been completed under the observation of and with selective testing
provided by representatives of GSI and are found to be in general compliance with the
requirements of the City of Encinitas, California,
Our findings were made in conformance with generally accepted professional engineering
practices, and no further warranty is implied or made, GSI assumes no responsibility or
liability for work, testing, or recommendations performed or provided by others. This report
is subject to review by the controlling authorities for this project
Mr. Milton Gee c/o Urbon Architecture
Santa Fe Animal Clinic & Law Office, 1205 Rubenstein Avenue
File: e:\wp7\2000\2022b.scr
GeoSoils, IRe.
W.O. 2022-B-SC
August 4, 1997
Page 2
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We appreciate this opportunity to be of service. If you have any questions, please call us
at (760) 438-3155,
Respectfully submitted,
GeoSoils, Inc.
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David W. Skelly
Civil Engineer, RC
Enclosures: Plate 1 - As-Graded Geotechnical Map
Distribution: (4) Addressee
Mr. Milton Gee c/o Urbon Architecture
Santa Fe Animal Clinic & Law Office, 1205 Rubenstein Avenue
File: e:\wp7\2000\2022b.scr
GeoSoils, IRe.
W.O. 2022-B-SC
August4,1997
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