ENG COMPACTION REPORTSOUTH FORK GEOSCIENCES, PLLC
DAILY FIELD REPORT Page 1 of 1
Client:
Address:
Attention:
Distribution:
Municipality:
Peterson Custom Homes
Inc.
Project:
Project #:
Permit #:
Location:
Aw Residence
Date:
Weather:
Report #:
4-20-2021
21141201h PI SW #B
Everett, WA 98204
18102
Sun, 50's
1
Aaron Peterson
952719017 Place SW, Edmonds, WA
Peterson Custom Homes Inc.
pchbuilder@msn.com.
General Contractor:
Peterson Custom Homes Inc.
Earthwork Contractor:
City of Edmonds
Engineer/Architect:
South Fork Geosciences (Andrew L. Glandon, LEG) was onsite today on a part-time basis at the
request of Aaron Peterson (Peterson Custom Homes Inc.) to observe and perform density
testing on sewer trench and curb cut subgrade in the in the 190th Place SW right of way.
Sewer Trench Backfill - The sewer tie-in had been installed and backfilled prior to our arrival
onsite. Based on Mr. Peterson's description, the trench had been backfilled with %-inch minus
crushed rock that was compacted in 1-foot lifts. The trench backfill appeared to be firm and
unyielding. Using a Y2-inch diameter steel soil probe, the sewer trench backfill was penetrated
1- to 2- inches under full body weight. Density tests were performed, and the results are shown
below. These tests were above the required compaction (95 percent maximum dry density, as
determined by Modified Proctor [ASTM: D1557]). Based on our field performance observations
and the density test results, it is our opinion that the sewer trench backfill is suitably compacted
and suitable for asphalt placement.
Test#
Location
Depth
Dry Density
% Moisture
Proctor
Comp %
Pass/Fail
Over sewer tie-
in, near south
SG
127.5
2.2
133.7
95.4%
P
side of exposed
area
Over sewer tie-
2
in, near north
SG
128.6
2.0
133.7
96.2%
P
side of exposed
area
Curb Cut Subgrade —The asphalt had been cut along the north side of 190th Place SW to
facilitate the asphalt patch up against the new curb. The exposed subgrade consisted of
crushed rock and existing soils. The soils surface had been compacted prior to our arrival. The
curb cut subgrade appeared to be firm and unyielding and using a Y2-inch diameter steel soil
probe, the curb cut subgrade was penetrated 1- to 2- inches under full body weight. Based on
our field performance observations and the generally good condition of the existing roadway, it
our opinion that the curb cut subgrade is suitable for asphalt placement.
South Fork Geosciences will return at the request of Peterson Custom Homes Inc.
SOUTH FORK GEOSCIENCES, PLLC Field Representative:
PO Box 1275
NORTH BEND, WA 98045 (/x�
425-890-48581INFO@sFGEO.00M