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June 3, 2015 <br />ES-3588.01 <br />,� <br />�� <br />;s ��� <br />��� �� �,� <br />m <br />� ��.��� <br />�, �,��� '�i <br />,..- <br />Earth Solutions NW ��c <br />• Geotechnical Engineering <br />• Construction Monitoring <br />• Environmental Sciences <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention <br />Subject: <br />Mr. Eddy Stevens <br />Final Report —�uilding 3, Lots 3.1 thru 3.5 <br />Construction Monitoring and Consufting S�rvices <br />Silver Lake Center <br />2006 thru 2016 — 113t" Place Southeast <br />Everett, Washington <br />Dear Mr. Stevens: <br />In accordance with your requesfi, Earth Solutions NW, LLC (ESNW) provided construction <br />monitoring and consulting services at the subject site. Our services included providing onsite <br />observations and testing on a part-time from January 14 to February 17, 2015. �ur <br />representatives made three site visits to observe building foundation subgrade and test building <br />slab backfill. <br />Our representative observed building foundation subgrade to be dense and suitab(e for support <br />of the proposed structure. <br />Our representative canducted four field density tests in accordance with ASTM Test <br />Designation D2922 (Nuclear Gauge Method). One representative soil sample was returned to <br />our laboratory for analysis of the maximum dry density and optimum moisture content in <br />accordance with ASTM D1557-02 (Modified Proctor}. Density test results indicate adequate <br />compaction of at least 95 percent at the tested locations of the building slab backfill. <br />Based on our observations and festing, the earthwork construction was accomplished in <br />accordance with the project plans and our geotechnical recommendations. <br />18()5 - 73f�t}t I'l�tc:e N,E., 5uiti' 207 ° E4cllevue, WA 9o0i}!� • i4'i5) 449-4704 °(AX j42:i} 44=)-4717 <br />