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v.7.20
FIELD REPORT
Date Project Name Project No. Report No.
06/06/2022 Renton Elementary School 16 20180398E003 018
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Bruce Guenzler
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. Cloudy, 60’s
THE FOLLOWING WAS NOTED:
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).
Area D Footings
While on-site, we observed CDC had excavated new footings in Area D. At planned footing subgrade elevations, a moist to very moist,
gray to orange, sand with silt (native till) was observed. Using a ½-inch diameter steel T-probe, AESI probed footing subgrades with
probe penetrations of less than 2 inches and observed the material appeared firm and unyielding underfoot. The contractor then
placed 4-inches of 2.5-inch minus crushed rock along the bottom of excavations to protect the subgrade. The material was compacted
using a vibratory sled compactor. All footings observed today appear suitable for the design load of 3500 psf. See Figure 1 for
locations.
Erosion Control
AESI also met with Jerry of CDC regarding erosion control due recent significant rain (>0.5”) over the weekend. We observed that
surface water was ponded in one main area in the middle of the site and no discharge was observed leaving the site. CDC stated that
they had installed silt fences along the boundary of the site and placed 2.5-inch minus along most of the work areas to protect
surfaces. Construction entrances contained 2” to 4” spalls per the TESC plan. Conveyance channels and check dams still need to be
installed per the TESC plan but no track out was observed leaving the site. Based on our observations, current temporary erosion
control BMPs are functioning as intended.
Date Project Name Project No. Report No.
06/06/2022 Renton ES 16 20180398E003 018
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FIELD REPORT
Figure 1: Plan sheet S2.04 (Area D). Footing subgrades observed today highlighted in green.
Subgrades observed previously highlighted in blue.
Date Project Name Project No. Report No.
06/06/2022 Renton ES 16 20180398E003 018
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FIELD REPORT
Figure 2. Observed ponded water indicate in blue. Silt fences observed indicated in orange. North is to the right of the figure.
Photos 1 and 2. Ponded Water in C1.1 portion of site facing west(Left). Footing excavation area and
trailers near construction entrance facing NW.
Ponded surface water