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November 17, 2015 <br />ES-3588.01 <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Thomas Heinz <br />„ <br />� Earth ' <br />Solutions <br />� W LLC <br />Earth 5olutions NW ��C <br />• Geotec:��nica� �ngi��eering <br />” Construction ��;onitorinn� <br />• Environmentil Sciences <br />Subject: Final Report — Building 10, Lots 10.1 thru 10.4 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />11202, 11204, 11206, and 11208 — 19th Drive Southeast <br />Everett, Washington <br />City of Everett Permit� C1411-079, C1411-080, C1411-081, C1411-082 <br />Dear Mr. Heinz: <br />In accordance with your request, Earth Solutions NW, LLC (ESNW) provided construction <br />monitoring and consulting services at the subject site. Our services included providing onsite <br />observations and festing on a part-time fram May 14 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 suitabie 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 laboratary for analysis of the rr�aximum 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 s(ab 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 />1£��S - 1�6t� P:aret N.E., 5uite ?0"! � F3ell�vuc, Lti,� �7°O�S '(475j 449-470A� ° Fl�X (��2'_;1 �+�:9-471"f <br />