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November 17, 2015 <br />ES-3588.01 <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98d09 <br />Attention: Mr. Thomas Heinz <br />• Earth <br />� Solutions <br />NW �►� <br />Earth Solutions NW ��C <br />• Geotec��nical Engi��eerirg <br />° Cr�nsCruction M,onitori�ig <br />• Environnzental S.r.iences <br />Subject: Final Report — Building 10, Lots 10.1 thru 10.4 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />1'l202, 11204, 11206, and 11208 — 19th Drive Southeast <br />Everett, Washington <br />City of Everett Permits C1411-079, C1411-080, C1411-081, C1419-082 <br />Dear Mr. Heinz: <br />In accordance with your request, Earth Solutions NW, LLG (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 May 'f4 to June 1, 2015. Our representatives <br />made two site visits to observe building foundation subgrade and test building slab backfill. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of the proposed structure. <br />Our representative conducted eight field density tests in accordance with ASTM Test <br />Designation D2922 (Nuclear Gauge Method). OneZx representative soil sample was returned <br />to our laboratory for analysis of the maximum dry density and optimum moisture content in <br />accordance with ASTM D1557-02 (Madified 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 testing, the earthwork construction was accomplished in <br />accordance with the project plans and our geotechnical recc�mmendations. <br />1ti05 - 1;6th P'are, i�.F.., 5i�i[e 2f)"1 � f3cllevuc, t�1';� �7°0 ); ° 14F5j 44y-4704 ° F,�X f4i�,1 449-4?1"i �\ I <br />�t I <br />='�l <br />