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r <br />November 6, 2015 <br />ES-3588.01 <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 980Q9 <br />Attention: Mr. Thomas Heirtz <br />Earth `. <br />. Solutions-. <br />NW«c <br />,�..� �.:.� <br />E�rth Solutions NW ��.� <br />° Gcotechnir;,l Engineerin;, <br />° Ci�niT�uction 1vlonitoring <br />° Frivironmental 5r.ic�r.cF�s <br />Subject: Finai Report — Building 18, Lots 18.1 thru 18.7 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />11102, 11106, 11110, 111'14, 11118, 11122, and 11126 — 20t" Drive Southeast <br />Everett, Washington <br />City of Everett Permits C1411-087, C1411-088, C1411-089, C14�1-090, <br />C1411-091, C1411-092, C1411-093 <br />Dear Mr. Heinz: <br />In accordance with your request, Earth Solutions NW, LL.0 (ESNW) provided construction <br />monitoring and consulting services at the subject site. Our services included providing onsite <br />observations and tesfing 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 sfab backfi[I. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of ihe proposed s�r-uciii�e. <br />Our representative conducted 14 field density tests in accordance with ASTM Tesf Designation <br />D2922 (Nuclear Gauge Methad). Two representative soil sampie was returned to our <br />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 testing, the earthwork construction was accomplished in <br />accordance with the project plans and our geotechnical recommendatians. <br />18Q; ��I ;F>th i'la�e ti.F., 5�.tit�� 2i)1 ° f3cllt�rvuc, Vl/A 98pQ i•(•�25) ^.4-,7O4 � FAX i42'�; 4<}<a_:.};1�1 <br />