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April 21, 2016 <br />ES-3588.01 <br />R � <br />� Solutions <br />NW«� <br />Earth Solutions NW L�c <br />' Geotechnical Engineering <br />• C:onstruction Monitoring <br />• Environmeiv:al Sciences <br />Polygon Northwest <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Ms. Michelle Dittman <br />�ubject: �irtal i�eport — �uileiing 4 <br />Canstructoor� I�ttonitoring and �ora�ul�ang ��rvoce� <br />Silver Lake Center <br />2001, 20U3, 2QQ5, 2007 & 2009 — 113th Place Southeast <br />Everett, Washington <br />City of Ev�r�tt Perrni#s C'�41'�-023, C'E4'l1-022, C°�4'6'�-02°6, C'i4°�1-020, � <br />C1411-019 <br />Dear Ms. Dittman: <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 testing on a part-time from December 2, 2015 to January 4, 2016. Our <br />representatives made four site visits to observe and test the building foundation subgrade, and <br />structural fill. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of the proposed structure. <br />�ur representative conducted five 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 af 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 recommendations. <br />1805 - 136th f'lacc: N.E., Si.iite 201 • P,ellevuu, 1h�:� 98C)05 •;�#2S) ���>-�70� • i=A;C (425) 449-�?11 <br />