HomeMy WebLinkAboutPermit File BLD-2019-0511 1715 O Avenue (42)FbnGE@)
I R C O R P O R A T i 0
Geotechnical and Earthquake Engineering Consultants
3213 Eastlake Ave E Ste B
Project No.
Page No.
Seattle, WA 98102
16-323
1 of 1
Tel: (206) 262-0370 Fax: (206) 262-0374
Report No.
Date / Day of Week
01
April 5, 2021 / Monday
Project Name
Location or Address
1014 & 1020 — 18th Street, Anacortes, WA
Owner
Permit No.
Weather
Madrona Real Estate Services (James
Sunny, — 40s
Sullivan
Architect
Contractor:
PanGEO Field Rep.
Mike Tveter
Siew L. Tan
Foundation/Footing Backfill:
As requested, the undersigned visited the site on 4/5/2021 to observe the footing subgrade. We met with
Mr. Mike Tveter when arrived and discussed the earthwork activities that has been performed.
We understand that 6 to 8 inches of structural fill has been placed on the exposed footing subgrade to
protect the native soils from moisture. The structural fill consist of recycled concrete placed in 4 to 6 inch
loose lift, and compacted with a Mikata compactor (see photo). Probing with a'/z-inch diameter steel rod
yielded negligible penetration, indicating dense condition.
We understand that nuclear density tests performed indicate low density. However, it should also be noted
that the accuracy of the nuclear gauge device for density and moisture content measurements on recycled
materials may be unreliable, due to their chemical compositions being different than typical earth fill.
In summary, based on our field observations, the footing subgrade as noted on 4/5/2021 is considered
adequate to support the design.
Select photos from the site visit are included on the following page.
19-031 Anacortcs 19th Ave Apartments - FR 01.doc