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1 <br />June 3, 2415 <br />ES-3588.01 <br />, w Eart� <br />���� `Solutions; <br />� : N1N�« <br />Earth Solutions NW LLC <br />• Ge.nfecnnical Engineering <br />° C��nstruc.tion Munitvrin� <br />• [�iviroiirnenlal Sriences <br />Polygan NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Eddy Stevens <br />Subject: Final Report <br />Buiiding 5, Lots 5.1 thru 5.7 <br />Building 6, Lots 6.1 thru S.4 <br />Building 20, Lofis 20.1 thru 20.8 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />Building 5- 1904 thru 1928 — 113�" P1ace Southeast <br />Building 6- 1919 thru 1929 — 113t" Place Southeast <br />Building 20 - 110Q2 thru 110'16 — 20`" Drive Southeast <br />Everett, Washington <br />Dear Mr. Stevens: <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 January 26 to April 3, 2015. Our representatives <br />made 11 site visits to observe building foundation subgrade and test building slab backfill. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of the proposed structures. <br />Our representative conducted 5Q field density tests in accordance with ASTM Test Designation <br />D2822 (Nuclear Gauge Method). Three representative soil samples were 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 recommendations. <br />I�O� -"136tn f'lac�:� N.E., 5uil:e 2��1 ° L-;c,;!,-,:iie; VVA 980(.i5 ° fq1�,i 44's)-4it14 • FAX (425) '1'{y-471"i <br />� <br />