Final Geotech.3.29.14.pdfSOUTH FORK GEOSCIENCES
PO Box 1275
NORTH BEND, WA 98045
(425) 831-2023
AGLANDON@COMCAST. NET
Precision Homes, Inc.
15625 Broadway Avenue
Snohomish, WA 98296
Attention: Mr. Don Lange
Subject: Geotechnical Inspection Summary — Lot 2
8725 Main Street
Edmonds, Washington
Mr. Lange:
March 29, 2014
Project #12071
The purpose of this letter is to summarize the required geotechnical observations for the
construction on the subject property. At your request, we were on site on March 28, 2014 to
observe the finished site conditions. It was our understanding that the required inspection
elements for the project consisted of the construction of the steel pipe pile/wood cribbing
retaining wall and permanent site stabilization. The following paragraphs will summarize our
observations and documentation of these items:
Steel Pipe Pile/Wood Cribbing Retaining Wall
South Fork Geosciences was onsite to observe the steel pipe pile installation for the steel pipe
pile/wood cribbing retaining wall on December 5, 2013. Sixty 2-inch diameter steel pipe piles
were driven to the minimum embedment depth of 7.5 feet and these observations were
documented in South Fork Geosciences daily field report #1. We also responded to a City of
Edmonds correction notice dated May 13, 2013 with the referenced letter (SFG, May 22, 2013)
which addressed specific elements of the of the retaining wall construction. It is our opinion that
the retaining wall was installed in accordance with the design recommendations set forth in the
referenced letter prepared by Liu & Associates. Since our previous observations, the steel pipe
pile/wood cribbing retaining wall had been encased in wood to enhance its appearance.
Permanent Site Stabilization
During our site visit on March 28, 2014 the site was in a finished condition. Sod had been
placed in the yard area and the slopes and flowerbeds had been landscaped. The wood cribbing
wall was utilized for grade separation at the back of the lot and a small landscaping block wall
SOUTH FORK GEOSCIENCES, PO BOX 1275, NORTH BEND, WA 98045, (425) 831-2023
was used near the northwest corner of the house. Sod, bark/compost mulch, crushed rock, and
various plantings were used for ground cover and stabilization. Based on our these observations
of the site conditions it is our opinion that the landscaping measures that have been implemented
are adequate for permanent site stabilization.
Conclusion
In summary, all earthwork -related aspects of construction that were observed by South Fork
Geosciences were found to be in accordance with the approved plans. We trust that this letter
will aid in the completion of your project. If you should have any questions, please feel free to
contact us.
Sincerely,
Andrew L. Glandon, LEG, CPESC
Geologist 1 Owner
South Fork Geosciences
References:
"8723 Main St., Daily Field Report #1" South Fork Geosciences, Project # 12071, December 5, 2012
"City of Edmonds Correction Notice Response, Permit #: INV 20130050, 8727 Main Street, Edmonds, Washington"
Letter prepared by South Fork Geosciences, Project #12071, May 22, 2013
"Site Stabilization, 3-Lot Plat, 8723 Main Street, Edmonds, Washington", Liu & Associates, Project #11-017,
February 24, 2011
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SOUTH FORK GEOSCIENCES, PO BOX 1275, NORTH BEND, WA 98045, (425) 831-2023