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June 3, 2015 <br />ES-3588.01 <br />Polygon NW <br />PO Box 1349 <br />Bellevue, Washington 98009 <br />Attention: IVIr. Eddy Stevens <br />Subject: Final Repor� <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 />� � �F N� <br />\)� �j eq <br />9 a <br />1, F � ��i �`� i <br />�•4�`Y+ k <br />r:�.-r� �; �t"q(a: <br />;t�t� :'i',i�j <br />�a:�is*;;AA� ' <br />� <br />Earth Solutions NW ��.c <br />Construction Monitoring and Consulting Services <br />Silver Lake Center <br />Building 5-1904 thru 1928 —113`h Place Southeast <br />Building 6- 1919 thru 1929 —113t" Place Southeast <br />Building 20 - 11002 thru 'I'i0'!6 — 20t" Drive Southeast <br />Everett, Washington <br />Dear Mr. Stevens: <br />0 (.;it�>tec:iu�ical `rnp;ineerinh <br />* {.{�ntitn,cti�>n �ti1onilorin;; <br />a Envirr_�r�rne=i�al Sric:r��c��s <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 January 26 to Aprii 3, 2015. Our representatives <br />made 11 site visits to observe building foundation subgrade and test building slab backfill. <br />Our representative observed building foundation subgrade to be dense and suitable for support <br />of ihe proposed structures. <br />Our representative conducted 50 field density tests in accordance with ASTM Test Designation <br />D2922 (Nuclear Gauge Method). Three representative soil samples were returned to our <br />laboratory for analysis af the maximum dry density and optirrtium 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 earthwark construction was accomplished in <br />accordance with the praject plans and a�sr geot�chr�icai recommendations. <br />l�OS - 136th PI� ce hl.i.., atii;:,� 2;11 � �c!`c,;;�.�, �r�;ti �!BC��tS • i `2`i? �44�.?-��7t)4 � FAX (�}5) '�49-4J"I", ` <br />� <br />�/ � <br />k: <br />