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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.
01/13/2023 Renton Elementary School 16 20180398E003 079
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Jackson Lundgren, G.I.T.
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, 80’s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was onsite at 12:00pm at the request of the general contractor to observe native
soil conditions and placement of sidewalk subgrade along Duvall Avenue NE at the Renton School District No. 403
development. While onsite we met with representatives from Continental Dirt Contractors.
Sidewalk Subgrade Conditions
AESI arrived onsite and observed contractor grading a section of sidewalk along Duvall Avenue NE. AESI observed
contractor placing 4 to 6-inches of 5/8-inch crushed rock along native subgrade and compacting with a vibratory plate
compactor. AESI used a ½-inch steel T-probe to probe locations along the sidewalk subgrade and observed native
subgrade conditions were medium-dense, firm, unyielding, and suitable for support of the proposed sidewalk in our
opinion. AESI recommended over-excavation up to 24-inches and backfill with 2-inch to 4-inch quarry spalls capped with
5/8-inch crushed rock compacted with a vibratory plate compactor in areas where saturated or material is encountered.
AESI departed the site at 2:00pm and will return for further observations and testing as requested by the client.
Figure 1: Completed area of grading/ compaction in green, area of recommended over-excavation and backfill with 2-inch to 4-inch quarry spalls in
red, ungraded area in yellow (as of 1/13/2023)
16
Date Project Name Project No. Report No.
01/13/2023 Renton ES 16 20180398E003 079
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FIELD REPORT
Figure 2: Sidewalk subgrade with type 17 basecourse, capped with 5/8-inch crushed rock
Figure 3: Ungraded area along the south eastern margin of the site along Duvall Ave NE