Nelson Geotech Fld Rpt 1 Binder - corrected 9.1.2020FIELD REPORT
NELSON
Project:
GEOTECHNICAL
Owner:
ASSOCIATES, INC.
Location:
17311 135TH Ave. NE #A-500
Weather:
Woodinville, WA 98072
Purpose of
Binder Residential Development
Deborah Binder
Edmonds, WA
Sunny; 70's
Geotechnical Consultation and
File No.: 11544B-20
Date: 8/7/2020
Report No: 1
Page 1 of 2
(425) 486-1669 FAX 481-2510 Visit: Construction Monitoring By: AJS
East Wenatchee, WA 98802
(509) 665-7696
We visited the site today at the request of Deborah Binder to provide geotechnical consultation and
earthwork construction monitoring services for the residential development project located at 8912 —
192nd Street SW in Edmonds, WA.
Upon arrival, we met with Leif, the contractor on site, to discuss the current excavation progress. We
noticed that the foundation and basement subgrade had been completely excavated. We were requested
to evaluate the subgrade for bearing capacity.
Foundation and basement subgrade consisted of a gray silty sand with gravel which we interpreted as
native glacial till. We evaluated the subgrade with a lh inch diameter steel probe rod under moderate
pressure. Probing yielded less than %2 inch, which we interpreted as dense or better conditions. It was
noted that a roughly 100 square foot portion of the foundations in the southwestern corner probed up to
4 inches. We interpreted this as medium dense and recommended its removal before foundations were
placed. The contractor on site said this would be done.
While on site we also evaluated the cut stability of the basement excavations. Excavation cuts were
roughly 8 feet in height and consist completely of the native glacial till. We observed no signs caving or
signs of imminent failure while on site. Basement cuts appeared stable at the time of our site visit.
Our findings and conclusions are based on observations made while on site. Foundation subgrade and
the temporary basement cuts appear to be prepared in accordance to the approved site plans and our
recommendations and should support the planned loads. We are able to return to the site upon request.
Attachment:
Distribution:
Signed: ixg",
Austin Slabaugh
Binder Res Dee Site Plan
115 B-20
Date: 700) 3
FR# I
Page: of a
jeend
Area of Excavation
Basement Exc_
Drawings Not To .kale