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r <br /> Solutions <br /> NWILC <br /> January 3, 2017 <br /> ES-2232.03 Earth Solutions NW LLC <br /> • Geotechnical Engineering <br /> • Construction Monitoring <br /> Underwood Gartland Everett, LLC • Environmental Sciences <br /> PO Box 3513 <br /> Bellevue, Washington 98009 <br /> Attention: Mr. David Gartland <br /> Subject: Final Report <br /> Construction Monitoring and Consulting Services <br /> Underwood Gartland Lot 1 <br /> Associated Boulevard and Industry Street <br /> Everett, Washington <br /> Reference: Earth Solutions NW, LLC <br /> Geotechnical Engineering Study <br /> ES-2232.02, dated February 6, 2015 <br /> Dear Mr. Gartland: <br /> In accordance with your request, Earth Solutions NW, LLC (ESNW) provided construction <br /> monitoring and consulting services for the subject project. We also provided the associated <br /> geotechnical engineering study. Our services included providing on-site observations and <br /> testing on a full-time and part-time basis from November 6, 2015 to December 29, 2016, with a <br /> total of 65 site visits. <br /> Our representatives observed suitable structural fill placed at and/or for the following <br /> applications: footings, slab-on-grade, ramps, roadways, curb and sidewalk subgrade (including <br /> along Associated Boulevard), utility trench backfill, and overexcavations. Our representatives <br /> conducted 91 density tests in accordance with ASTM D2922 (Nuclear Gauge Method). ESNW <br /> collected nine representative soil samples for laboratory analysis of the maximum dry density <br /> and optimum moisture content in accordance with ASTM D1557 (Modified Proctor). Density test <br /> results indicate adequate relative compaction of at least 90 percent of the maximum dry density <br /> of the material at tested locations within the above-mentioned structural areas. <br /> ESNW representative also observed the installation of the capillary break for the building pad <br /> slab-on-grade. ESNW laboratory tested the 1-1/4-inch crushed rock and observed it to have <br /> less than 3 percent fines, meeting general requirement for free-draining capillary break. ESNW <br /> observed curb and sidewalk subgrade along Associated Boulevard and within the site to be <br /> dense and suitable for support of the proposed curb and sidewalk structures. Pavement <br /> subgrade at roadway areas within the subject site was observed with a proofroll using a fully- <br /> loaded dump truck. ESNW representatives observed the final subgrade conditions at roadway <br /> areas to be firm and unyielding during the proofroll, suitable for support of pavement. <br /> 1805 -136th Place N.E.,Suite 201 • Bellevue,WA 98()05 '125)449-4704 • FAX(425)449-4711 <br />