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FIELD REPORT
Date Project Name Project No. Report No.
05/10/2022 Renton Elementary School 16 20180398E003 004
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Kelsey McCrady
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. Partly cloudy, 50’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on site part-time at the request of Jerry Jr. with Continental Dirt Contractors (CDC). While
on-site we observed CDC continuing soil stripping activities.
Site Clearing and Stripping:
Upon arrival to the site, the contractor was working to excavate to building slab subgrade elevation in the eastern area of the site,
south of Wetland B. The contractor had removed the topsoil in this area prior to AESI arrival. The area consisted of a very moist to
saturated, dark brown to orange, silty fine sand with trace gravel and occasional to abundant rootlets and other organic material
(apparent weathered native till and reworked till) which yielded readily underfoot and rutted significantly under equipment tracks.
While onsite, the contractor excavated a test pit in the center of the soft area to a depth of approximately 1.5-feet. Bottom of the test
pit consisted of a very most, gray, sand with trace to some silt and gravel which was firm and unyielding underfoot and probed less
than 1-inch using a ½-inch diameter steel T-probe. The soft and very moist area was measured to extend to about 300-feet long by 75-
feet wide and an average of about 10-inches deep. The contractor stated their intentions to export the very moist weathered till
material due to its high moisture, silt, and organics content. AESI noted the material appeared several percent above optimum
moisture and unlikely to be effectively dried under current weather conditions. See Figure 1 for location and Photo 1 for photo. AESI
will return in the future for more geotechnical observation. We checked out with CDC and Cornerstone prior to our departure.
Figure 1. Demolition Plan C1.0. Red location indicates soft soils observed today.
Date Project Name Project No. Report No.
05/10/2022 Renton ES 16 20180398E003 004
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FIELD REPORT
Photo 1: Soft soils observed today. Note test pit. Photo faces southwest.