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0 <br />June 3, 2015 <br />ES-3588.01 <br />:1yii <br />�`��SOIUN04S <br />� Nw«< <br />Earth Solurions ��'W �i_C <br />. . .. .. ��-.... . <br />.. �r;�..,.... ... ,. ,.. .. � <br />` . .� .�.�.. ..,. �- . � ...�. <br />� <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />.^�tter�fic� �: ��ii . E�dy Stevens <br />Subject: Final Report <br />Building 7, Lots 7.1 thru 7.6, <br />Building 8, Lots 8.1 thru 8.4 and <br />Building 19, Lots 19.1 thru 19.8 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />Building 7- 11220 thru 11230 — 19�h Drive Southeast <br />Building 8- 11217 thru 11231 —'19th Drive Southeast <br />Building 19 - 11018 thru 11032 — 2Qt" 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 February 13 to April 27, 2015. Our <br />represenfatives made eight site visits to observ� building foundation subgrade and test building <br />slab backfili. <br />Our representative observed building foundation subgrade to be dense and suitable for support , <br />of the proposed strucfures. <br />Our representative conducted 24 field density tests in accordance with ASTM Test Desi nat' <br />�2922 (Nuclear Gauge Method). Two representative soif samples were returned go our <br />laboratory for analysis of the maximum dry density and optimum moisture content in <br />accordance with ASTM D1557-Q2 (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 constructian was accomplished in <br />accordance with the project plans and our geotechnical recommendations. <br />,�:�r;. <br />., , <br />: ,. <br />Y ' <br />:�`' <br />� ..';:;f;4.�:.. <br />:;� � <br />�.i�.�r,�,_.�.., . .. . .... ... .....• . .. -i;�•.�1;,rri..�+....-.. . ��/ <br />�'�� �� <br />