HomeMy WebLinkAbout20160674E002 Bethany Corner 2022-03-31 FR 029.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.
3/31/22 Bethany Corner 20160674E002 029
Location Municipality AESI Project Manager AESI Field Rep
Lot 5 ADU
10942 SE 165th St Renton
Matthew A. Miller, P.E.
Scott R. Hannah, L.G., L.E.G.
Permit No. Client/Owner Attn Requested By
B21004434
Mark Seek (Tiger Mountain
Homes)
Mark Seek Contractor
Engineer/Architect General Contractor Paving Contractor Weather
D.R. Strong Tiger Mountain Homes / Mark Becker Blacktop / Joe Cloudy, 60’s
THE FOLLOWING WAS NOTED:
AESI was onsite mid-day to observe the completed excavation for the Lot 5 ADU building foundation. Upon arrival, we
met with Mark Seek of Tiger Mountain Homes.
Lot 5 ADU Building Foundation Subgrade, Permit #B21005534:
Prior to our arrival, the contractor excavated approximately 30 feet by 30 feet for the Lot 5 ADU building foundation (Fig
1). Due to the presence of old fill soil and an underlying layer of organic-rich soil, the contractor completed the excavation
approximately 3 feet below the proposed foundation elevation to expose native, medium dense to dense, tan, silty sand,
based on our observations with a ½ inch diameter, steel soil probe. The center portion of the excavation was deepened 1
to 2 more feet to create a sump area to pump ground water daylighting from the lower portion of the excavation. Some
surface disturbed soil (mud) 2 to 4 inches deep was observed around the margin of the sump area.
Mark said that they would scrape out any residual mud prior to placing 3 to 5 feet of rock and recycled concrete next
week to re-establish the subgrade elevation for the foundation. The existing undisturbed soils will be suitable for 1,500
psf soil bearing.
Mark informed us that he planned to use approximately 1 to 2 feet of 2-to-4-inch size quarry spalls in the excavation
followed by a capping layer of 1.25-inch minus, crushed, concrete recycle. The spalls and concrete recycle will be
compacted during placement to create a firm and unyielding mass of rock. We discussed with Mark that AESI should
return to observe the compacted concrete recycle and verify 1,500 psf soil bearing, per plan.
Date Project Name Project No. Report No.
2022-03-31 Bethany Corner 20160674E002 029
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FIELD REPORT
Figure 1. Lot 5 ADU excavation. Looking north