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OG/e7/2000 12 31 FAX 4252842° , RD002/003 <br />,Juno 7, 2006 <br />ES-0064 <br />Sound Ventures <br />320 1061h Avenue Northeast, Suite 100 <br />Bellevue, Washington 98004 <br />Attention: Mr. Doug Klapponbach <br />Larch <br />Solutions <br />Fartil Solutions NW LLC <br />Subject: Final Report <br />Construction Monitoring and Consulting Eorvicos <br />80ih Street Venture — Buildings A, B and C <br />8XX 801h Street Southwest <br />Everett, Washington <br />Reference: Geotech Consultants, Inc. <br />Geolechnical Fngineering Study <br />Dated September, 2004 <br />Dear Mr. Klappenbach: <br />• Grorer hnir ..1 Fnl;invering <br />' Construction Mnnlrnrin8 <br />• Envin,nmenl.J S, irn.,w <br />In accordance with your request, Earth Solutions NW IF ;NW) provided construction monitoring <br />and consulting services at the subject site. We r:wewed the referenced geotochnical <br />engineering study for the project. Our services included providing onsite observations and <br />testing on a part -tinge and full-time basis from August 4, 2005 to May 5, 2006. ESNW <br />repieserilatives made sixty-two (62) site visits to observ3 or test building foundation subgrade, <br />building slab subgrade, utility trench backfill, vault subc rade and backfill, pavement subgrade <br />and sidewalk subgrade. <br />ESNW representatives conducted ninety-six (96) field Tensity tests in accordance with AS7M <br />lest Designation D2922 (Nuclear Gauge Method). Nine representative soil samples were <br />returned to our laboratory for analysis of the maximum dry density and optlmum moisture <br />content in accordance with ASTM D1557-02 (Modified Proctor) Density test results indicate <br />adequate compaction of at least a 90 percent average a'. the tested locations of the building <br />foundation and slab subgrade, utility trench backfill, and vault backfill. <br />ESNW representatives observed and tested building foundation subgrade to bo in a dense <br />condition and suitable for the allowable soil bearing cap, city of 3,000 psf. <br />I_SNW representatives observed the final pavement slbgrade and sidewalk subgrade to be <br />stable and unyielding <br />2881 152nd Avenue NE -Red rn on d, WA 98052 • 1425) 284.3300 • =At (425) 184.2,155 • Toll Free 18h6) 136.8710 <br />