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Premier Storage Everett, LLC <br />August 19, 2013 <br />ES-2432.02 <br />Page 2%7 <br />ESNW representatives conducted 28 field density tests in accordance with ASTM Test <br />Designation D2922 (Nuclear Gauge Method). Four representative soil samples were returned <br />to 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 of at least 95 percent at the tested locations of the building slab and foundation <br />backfill, stormwater vault backfill and utility trench backfill. <br />Based on our observations and testing, and to the best of our knowledge, the earthwork <br />construction was accomplished in accordance with the project plans and our geotechnical <br />recommendations. <br />We trust this letter meets your current needs. If you have any questions, please call. <br />Sincerely, <br />EARTH SOLUTIONS NW, LLC <br />Lewi A. Conklin <br />Geo chnical Services Manager <br />Kyle R. Campbell, P.E. <br />Principal <br />Earth Solutions NW, LLC <br />