4603_001.pdfNovember 10, 2014
ES-2550.02
Ardsley Homes, LLC
16108 Ash Way, Ste. 201
Lynnwood, Washington 98087
Attention: Mr. Scott Brock
Subject: Geotechnical Assessment
Pervious Concrete — Lots 2 and 3
Pineview Place
Edmonds, Washington
Reference: Driveway Grade Exhibits
Pervious Concrete
Lots 2 and 3
Dear Mr. Brock:
$O�Itri110ns,
Earth Solutions NW LLC
• Geotechnical Engineering
• Construction Monitoring
• Environmental Sciences
In accordance with your request, Earth Solutions NW, LLC (ESNW) observed the subgrade
and native sand deposits at the proposed Lot 2 and Lot 3 driveway locations. The native
subgrade (infiltration surface) for the pavement section will be sloped at 2 percent or less.
Above the open graded crushed rock "choker course", the finish surface of the pervious
concrete will be sloped no steeper than 5 percent. Based on our review, and given the
relatively flat (less than 2 percent) subgrade condition at the infiltration surface, construction of
the pavement section as planned is acceptable from a geotechnical standpoint.
We trust this letter and geotechnical assessment meet your current needs. If you have any
questions, or if additional information is required, please call.
Sincerely,
EARTH SOLUTIONS NW, LLC
Raymond A. Coglas, P.E.
Principal
1805 - 136th Place N.E., Suite 201 0 Bellevue, WA 98005 0 (425) 449-4704 0 FAX (425) 449-4711