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GILES
ENGINEERING HSSOCIATES, INC.
GEOTECHNICAL, ENVIRONMENTAL & CONSTRUCTION MATERIALS CONSULTANTS
Plump Engineering Inc.
914 E. Katella Avenue
Anaheim, California 92805
Attention: Mr. Richard Plump
Subject: Material Compaction Test Results
Hoag Hospital Private Roadway
One Hoag Drive
Newport Beach, California
Project No. 2G-1604008
Dear Mr. Plump:
May 3, 2016
In accordance with your request, Giles Engineering Associates, Inc. (Giles) performed
compaction testing on existing cement -treated base and the underlying subgrade soils at four
locations within the existing private drive at the site. The location of the private drive is in the
southwestern portion of the Hoag Hospital complex, behind the building referenced by the
address of 47 Hoag Drive.
Prior to our arrival, the existing asphalt pavement was removed by the contractor (KGC) at four
test areas. The density tests within the exposed base course were performed utilizing a nuclear
gauge, per ASTM D-6938. Following density testing within the base course, the base course
was excavated by hand (by KGC) to expose the underlying subgrade soils. However, due to
refusal within the base course at location #4, the subgrade at that location was not tested. In-
situ density tests were subsequently performed within the exposed subgrade, also per ASTM D-
6938. The approximate locations of the density tests are attached. A representative sample of
the base course and subgrade soil were collected and returned to our laboratory to determine
the maximum dry density and optimum moisture content of each material in accordance with
ASTM D-1557.
The results of the field and laboratory testing are attached and indicate that the subgrade and
base course at the locations tested possess a relative compaction of at least 95% and these
materials are considered to be geotechnically suitable. In addition, the thickness of the existing
pavement and base course was measured at the test locations and those measured
thicknesses are noted below:
Test Location
Asphalt Thickness (inches)
Base Course Thickness (in)
1
3
4-'/
2
3
6
3
3
6
4
4
Refusal -not measured
1965 North Main Street • Orange, CA 92865
714/279-0817 • Fax 714/279.9687 , E-Mail losangeles@gilesengr.com
ti GILES
GILES
ENGINEERING DISSOCIATES, INC.
Material Compaction Test Results
Hoag Hospital Private Roadway
Newport Beach, California
Project No. 2G-1604008
Page 2
Thank you for the opportunity to offer our services. Should you have any questions after
reviewing this letter, please feel free to contact the undersigned at your convenience.
Respectfully submitted,
GILES ENGINEERING ASSOCIATE karma
. Rus - , P.E., G.E
Regional Director
No. 2tt42
Attachment: Test Location Map
Density Test Results
Distribution: Plump Engineering, Inc.
Richard Plump (3 Copies, email: richardplump(a7peica.com)
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Material Compaction Test Results
Hoag Hospital -Private Roadway
Newport Beach, California
Gies Project No. 2G-1604008
1
4/29/16
BG
1
GILES
ENGINEERING HSSOCIATES, INC.
TABLE 1
SUMMARY OF FIELD DENSITY TESTS
12.8
122.9
8.0
Den
121.1
99
95
X
Pass
2
4/29/16
BG
1
12.8
122.9
10.1
121.5
99
95
X
Pass
3
4/29/16
BG
1
12.8
122.9
7.9
119.9
98
95
X
Pass
4
4/29/16
BG
1
12.8
122.9
5.5
124.3
100+
95
X
Pass
5
4/29/16
SG
2
23.2
92.7
18.3
94.0
100+
95
X
Pass
6
4/29/16
SG
2
23.2
92.7
22.9
92.0
99
95
X
Pass
7
4/29/16
SG
2
23.2
92.7
25.1
92.9
100
95
X
Pass
Notes
• Nuclear Test - Nuclear Method (ASTM D6938-10)
• BG-- Base Grade
• Sc-- Subgrade
A: Test results comply with specification
B: Test results less than specification
C: Test after recompaction
TABLE 2
SUMMARY OF MOISTURE DENSITY RELATIONSHIP
Soil
Type
No.
Soil Description
Maximum Dry
Density (pcf)
Optimum
Moisture (/o)
1
Gray Aggregate Base
122.9
12.8
2
Brown Sandy Silt, little clay
92.7
23.2
Maximum Dry Density and Optimum Moisture Content determined by ASTM Test Method
D1557 Modified Proctor.