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Date Mailed: Principal / PM:
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v.7.20
FIELD REPORT
Date Project Name Project No. Report No.
06/08/2022 Renton Elementary School 16 20180398E003 020
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Charlie Chou
Permit No. Client/Owner Attn Requested By
Renton School District No. 403 Ed Thomson Client
Engineer/Architect General Contractor Grading Contractor Weather
LPD / Hutteball + Oremus Cornerstone Continental Dirt Contractors/ Jerry Jr. Sunny, 60’s
THE FOLLOWING WAS NOTED:
Area A Footings
Associated Earth Sciences Inc. (AESI) was on site for part-time geotechnical observation. Upon arrival, we met with representatives
from Cornerstone and Continental Dirt Contractors (CDC). While on-site, we observed CDC Excavating 1’ to 2’ deep footing edges in
Area A between gridlines DD and DG. Once excavated into till and existing 2 ½” structural fill, the crew further compacted the
subgrade with a vibratory plate. We probed the footing subgrades with a ½” diameter steel probe to around 2” and found them to be
firm and unyielding.
Over-Excavation, Grading, and Soil Stockpiling
While on-site, AESI also observed CDC working on mass grading for the site by cutting down high areas in the South end of the site
where the future parking area will be as well as stripping topsoil and vegetation in the recently relinquished wetlands area along the
East edge of the site. AESI observed that two sections approximately 40’long x 56’wide x 1’ deep and 88’long x 70’wide x 1’ deep were
excavated an extra 1’ below final grade due to stripping topsoil for an approximate total of 8400 ft3 or 311 yds3 of over-excavation. Soil
from the South end cutting was temporarily placed today over the 2 ½”minus crushed rock area from 6/03/22 (FR 017). The
contractor is aware that the temporarily placed soil is not compacted currently and is treated as a stockpile to be spread and dried in
the future.
Figure 1. Overall grading plan with cut high areas boxed in red, temporary soil from the cuts stored in green area, and approximate
over-excavations of relinquished wetlands marked in yellow. North is to the right of the figure.
Cut Area
Date Project Name Project No. Report No.
06/08/2022 Renton ES 16 20180398E003 020
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FIELD REPORT
Figure 2: Plan sheet S2.01 (Area A). Footing subgrades observed today highlighted in green.
Subgrades observed previously highlighted in blue.
Date Project Name Project No. Report No.
06/08/2022 Renton ES 16 20180398E003 020
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FIELD REPORT
Photo 1. Stripping/over-excavation of relinquished wetland area along East edge of site. Boundary of native till soil and recent stored
soil from cutting indicated in red dashed line. View Facing North
Subgrade
Stripping
Stockpiled Native Soil
Date Project Name Project No. Report No.
06/08/2022 Renton ES 16 20180398E003 020
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FIELD REPORT
Photo 2. Stripping, Over-excavation, and soil stockpile from opposite view facing South.
Stockpiled native soils