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November 6, 2015 <br />ES-3588.0� <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Thomas Heinz <br />Earth �, <br />-Sotutions <br />NW«<_ <br />Earth Solutions NW ��.c <br />° �;eotechnical Engineerin� <br />° Const��iictit�i� Monitori;tg <br />° �m�ironmr�ntal 5cienc��5 <br />Subject: Finai Report — Building 18, Lots 18.1 thru 18.7 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />1'1102, 11106, 11110, 11114, 11118, 11122, anci 11126 — 20t" Drive Southeast <br />Everett, Washington <br />City of Everett Permits C1411-087, C1419-U8�, C141°I-089, C1411-090, <br />C1411-091, C1411-092, C1411-093 <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 testing on a part-tirne from March 30 to May 19, 2015. Our representatives <br />made three site visits to observe building foundation subgrade and test building slab backfifl. <br />Our representative observed building faundation subgrade to be dense and suitable for support <br />ofi the pro�oseci struciur�e. <br />�ur representative cor�ducted 14 field density tests in accordance with ASTM Test Designation <br />D2922 (Nuclear Gauge Method). Two representative soil sampie was returned to our <br />laboratory for anaiysis of the maximum dry density and optimum moisture content in <br />accordance with ASTM D1557-02 (Modified Proctor). Density #est 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 recommendations. <br />ISO5 I;F�Ih 't'la; e ti.E., Si.�itt:� 2"t?"i ° f�c�llitwc, bl�A 9£i00�i "('-�253 4:9-471)4 ° FAX (4�'�i 449 '171 1 <br />