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June 3, 2015 <br />ES-3588.01 <br />� So1�on5� <br />� k�� ��z� <br />�:_�e�� <br />Earth Solutioins NW ��c <br />° (.����:,�e�:��F�:c�,l E:ir.;inF;�Yi�i,� <br />° C'�;ns,tn;c;i�;n ,�-1i;�iitori't:; <br />� Er;vir��r-ne.n;; I �;.I�.rit.t,; <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Eddy Stevens <br />Subject: Final Report <br />Building 5, Lots 5.1 thru 5.7 <br />Building 6, Lots 6.1 thru 6.4 <br />Building 20, Lots 20.1 thru 20.8 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />Building 5-1904 thru 1928 —113th P1ace Southeast <br />Building 6- 1919 thru 1929 — 113t" Place Soufheast <br />Building 20 - 11002 thru 11016 — 20t" 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 includec� providing onsite <br />observations and testing on a part-tirne from January 26 to April 3, 2015. Our represen4atives <br />made 11 site visits to observe building foundation subgrade and test building s�lab backfiN. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of the proposed structures. <br />Our representative conducted 50 field density tests in accordance with ASTN1 Test Designation <br />D2922 (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 backfilf. <br />Based on our observations and testing, the earthwork construction wa:� accomplished in <br />accordance with the project plans and our geotechnical recommendations. <br />i�C;', - 736th F'I:�ce \. , �uir:. �i) ��Lr: c., ��"�'.� �t��: :-S � �^� >; =i�t i �7t;4 • ;;\X 11>>) �ty-�171 , <br />