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Kirkland | Tacoma | Mount Vernon 425-827-7701| www.aesgeo.com
Date Mailed:
Principal / PM: Bruce Guenzler, L.G., L.E.G.
This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager
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FIELD REPORT
Date Project Name Project No. Report No.
09/20/2022 Renton Elementary School 16 20180398E003 063
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Samantha Parker
Permit No. Client/Owner Attn Requested By
B21004604 Renton School District No. 403 Ed Thomson Contractor
Engineer/Architect General Contractor Grading Contractor Weather
CPL / Hutteball + Oremus Cornerstone/Kyle Continental Dirt Contractors/ Jerry Jr. Sunny, 70’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on-site in the morning for observation of Stormwater Detention Facility 2 progress and
footing subgrade, at the request of Jerry Jr. of CDC.
Stormwater Detention Facility 2
While on-site, AESI observed progress on Stormwater Detention Facility 2. We noted that the placement of the lower geotextile
liner, PVC liner, and top geotextile liner was almost entirely complete. CDC informed AESI that the completion of liners in the area
where a temporary ramp is in place is scheduled for later in the week. The placement of approximately 9” of clean crushed
aggregate over the base of the facility was underway. AESI observed the contractors use a single drum roller to level and compact
the aggregate. The placement of stormwater chambers and top 1’ of clean crushed aggregate over the chambers was also
underway, starting in the southeastern corner. AESI observed the contractor use a plate compactor to compact the top of the
aggregate. See Figure 1 for location of observed area today.
Footing Subgrade
While onsite, AESI observed several areas of footing subgrade that had been prepared near building Area A. We noted that the
subgrade areas consisted of 2 ½” minus crushed rock backfill of which, we had previously observed the placement and compaction.
AESI used a ½ inch diameter steel soils T-probe to assess the subgrade conditions. Generally, the area probed less than 2” full body
weight. In our opinion, based on our observations we found the area of subgrade observed today to be firm and unyielding and
suitable for support of the planned stairs and covered play area. See Figure 2 for location of observed area today.
Electrical Trench Backfill
While onsite, AESI observed beginning of the excavation of the shallow onsite electrical trenches in the SW corner of the site. We
noted that the soil being removed from the trenches in the SW corner of the site appeared dry of optimum moisture content. We
recommended that prior to backfilling in this area, the material be moisture conditioned. The contractors informed AESI that they
planned to begin backfilling Thursday morning.
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Date Project Name Project No. Report No.
09/20/2022 Renton ES 16 20180398E003 063
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FIELD REPORT
Photo 1. Facility #2 progress observed today.
Figure 1. Sheet C2.0 The observed area of Stormwater Detention Facility #2. North is to the right of the figure.
Facility #2 – The placement of geotextile liners and PVC liner is complete. Placement of 9” of aggregate underway.
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Date Project Name Project No. Report No.
09/20/2022 Renton ES 16 20180398E003 063
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FIELD REPORT
Figure 2. Sheet S2.02 Foundation Plan for Area B shown with location of footings observed today indicated in red.
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Date Project Name Project No. Report No.
09/20/2022 Renton ES 16 20180398E003 063
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FIELD REPORT
Photos 2 & 3. Prpared footing areas observed today.