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June 3, 2015 <br />ES-3588.0 9 <br />� � Earth <br />Solutions <br />NW«C <br />Farth SoluCions NW �_LC <br />e ;,�,�:<<.si,�,��_<,�;:.�,�����•��,�,;; <br />• t..:r.)rictruCt!on �ti1r�iiiiOri�tg <br />' Erivir;nmr-nlal �r-icr.ic7 <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 />Buitding 99, Lots 19.1 thru 19.8 <br />Construction Monitoring and Consulting Services <br />Siiver 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 91032 — 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 subjer_,t site. O�ir sEniicr�s incf�rded r�rovidjng cii�;',, <br />observafions and testing on a part-time from February 13 to Aprii 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 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 />;�ip" - i:3f,rh Pl7c� \. , Sui'c� '1, [3e;� �tie, `:1' . Ii UCi`; ° ,µ7; < <'1-�;;) � ° 1=,�\: � �>'�,'#•;'�l .. `1 <br />