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June 3, 2015 <br />ES-3588.01 <br />� � Earth <br />Solutions <br />NW«� <br />Farth Solutions NW �LC <br />• C�;ee:[echnicai �rn,;ir:ee.ring <br />• (..;)ricrruCtl�;;17 �1.lrinil0l'i't� <br />• (.Ilvi!';if?fY':r-�il<lI S('iC't?CCti <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Eddy 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 1123Q — 19th Drive Southeast <br />Building 8- 11217 thru 11231 —19�h Drive Southeast <br />Building 19 - 11018 thru 11032 — 20th 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. O�ir servicns incl� r�ied �ro�riciing onsit� <br />observaYio�s and testing on a part-time from February 13 to April 27, 2015. Our <br />representatives made eight site visits to observe building foundatian subgrade and test buiiding <br />slab backfilL <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of the proposed sfructures. <br />Our representative conducted 24 field density tests in accordance with ASTM Test Designation <br />D2922 (Nuclear Gauge Method). Two representative soil samples were returned to our <br />laboratory for analysis of the maximum dry density and opiimum 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 geoiechnical recommendations. <br />lsifi� - 13(,�h P?atN ti. Stii'�°_;)"� • C3t�.� tit.�e, `:1'� if,i;i1; ° ;.��,'. �,� ��,� * �: ?. <a- ., 1 �.� 1 <br />') =4-i. �;i 1 , ''� . <br />