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June 3, 2015 <br />ES-3588.01 <br />� Ear#h <br />Solutions <br />NW «� <br />Farth Solutions NW LLC <br />� C;ec,tech:,ica� � nsireer�n,; <br />• t. or�c(ruct:�;n ��1r�nilori,i� <br />' F.I1VI!';if`fl'f':'lldi S('iC(':CCi <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: Mr. Eddy Stevens <br />Subject: Final Report <br />�uilding 7, Lots 7.1 thru 7.6, <br />Building 8, Lots 8.1 thru 8.4 and <br />Buifding 99, Lots 19.1 thru 19.8 <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />Building 7- 11220 thru 11230 — 19th Drive Southeast <br />Building 8- 11217 thru 11231 —19th Drive Southeast <br />Building 19 - 11018 thru 11032 — 2Qth 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. n�ir s�n�ic�s inclr�ciec� �rovidinc� c��sit� <br />observa�ions and testing on a part-time from February 13 to April 27, 2015. Our <br />representatives made eight site visits to observe building foundation subgrade and test building <br />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 24 field density tests in accordance with ASTM Test Designation <br />D2922 (Nuclear Gauge Method). Two representative soi! 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 geotechnical recommendations. <br />1fifi � - 13(,rh {'iacN \.�' . S�.�i°:�� _' 1"� • [3e .•�ur�. `:1 iitft,..- o �51, , �� p � , � � .. , <br />_t., '-1--i',.-� i�.� '!_ �; °a• l .. . .i�/ �/ <br />