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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
Page 1 of 1
v.7.20
FIELD REPORT
Date Project Name Project No. Report No.
03/29/2023 Renton Elementary School 16 20180398E003 087
Location Municipality AESI Project Manager AESI Field Rep
1075 Duvall Ave NE Renton Bruce Guenzler, L.E.G. Elise Freeman, 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. Cloudy, 50s
THE FOLLOWING WAS NOTED:
Associated Earth Sciences Inc. (AESI) was on-site today to observe wall subgrade and confirm the soil type found in excavations for
dispersion trenches on west side of property.
Dispersion Trenches
AESI arrived on site in the afternoon to observe the soils encountered in 2 of the excavations for 2’-wide dispersion trenches on the
west side of the property (Figure 1). Soils exposed in the excavation sidewalls consisted of very dense lodgement till. The plans
indicate that a low-permeability liner should be placed if outwash soils are present, and AESI did not find outwash soils present in
the excavations seen today.
Wall Subgrade
While onsite, AESI observed the subgrade for two walls on the west side of the property. The contractor had prepared the subgrade
by cutting to grade and placing 1-2” of crushed rock or spalls in the base. AESI assessed the subgrade below the rock utilizing a ½”
diameter steel soils probe and found the native soils in the area to be, in our opinion, firm and unyielding - suitable for wall
subgrade.
Figure 1. Sheet C2.2 with dispersion trenches observed today highlighted in blue, and wall subgrade highlighted in orange.