HomeMy WebLinkAbout20160674E002 Bethany Corner 2022-06-20 FR 043.pdf
Kirkland | Tacoma | Mount Vernon
425-827-7701| www.aesgeo.com
Date Mailed:
Principal / PM: Matthew A. Miller, P.E.
This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager
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v.7.20
FIELD REPORT
Date Project Name Project No. Report No.
6/20/2022 Bethany Corner 20160674E002 043
Location Municipality AESI Project Manager AESI Field Rep
10957 SE 165th St. Renton Matthew A. Miller, P.E. Charlie Chou
Permit No. Client/Owner Attn Requested By
B22000572 Mark Seek (Tiger Mountain Homes) Mark Seek Contractor
Engineer/Architect General Contractor Earthwork Contractor Weather
HiLine Homes Tiger Mountain Homes / Mark Tiger Mountain P/C, 60’s
THE FOLLOWING WAS NOTED:
Lot 5 Foundation Subgrade
Associated Earth Sciences Inc. (AESI) was onsite around 8:45 AM to observe lot 5 building foundation subgrade at the
request of the contractor. Upon arrival, we met with Mark Seek with Tiger Mountain Homes. We observed the subgrade
consisted of gray to brown silty sand with some standing water from recent rain. The contractor excavated approximately
7 feet from final grade to get past fill soils and into native soils suitable for foundation subgrade using a large excavator.
We probed the subgrade using a ½” diameter steel probe with probe penetrations averaging 2” to 4” for most of the
subgrade. We observed a softer pocket of wet soils that probed around 6” and visually estimated it to be 15’ x 8’. The
contractor elected to remove the softer pocket of soil and further over-excavated an additional 6” to fill back in with
recycled concrete. Based on our observations, we found the subgrades to be firm and unyielding and suitable for support
of the load bearing pressure of 1500 psf per plan. Large dump trucks periodically brought in recycled concrete spalls to
the site thoughout our visit. We observed Mark place and tamp the recycled concrete using the back of the excavator
bucket to fill back up to final grade. Location of recycled concrete backfill outlined in Figure 1 below.
Photos 1 and 2. Native subgrade at bottom of excavation facing S (Left). Placement of recycled concrete spalls with excavator bucket (Right).
Date Project Name Project No. Report No.
6/20/2022 Bethany Corner 20160674E002 043
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FIELD REPORT
Figure 1: Approximate location of recycled concrete backfill outlined in yellow.