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47. 71:::/' <br /> CI :DEsIGNz <br /> { vuonS 4 3- ) 11-( 1-0r� ,.�f <br /> October 13, 2017 <br /> / r I <br /> I I <br /> Polygon Northwest Company I ;� <br /> 1 1624 SE 5th Street, Suite 200 <br /> Bellevue, WA 98005 (c� O <br /> Attention: Michelle Dittman p) <br /> Building 8 Summary Letter <br /> Geotechnical Construction Observation Services <br /> Everett Riverfront Eclipse Site <br /> Everett, Washington <br /> GeoDesign Project: Polygon-128-03 <br /> 3347 31" Drive (Permit No. Cl 603-031) <br /> 3349 31' Drive (Permit No. C1603-032) <br /> 3351 31" Drive (Permit No. C1603-033) <br /> 3353 31" Drive (Permit No. C1603-034) <br /> 3355 31" Drive (Permit No. C1603-035) <br /> This letter provides a summary of GeoDesign, Inc.'s geotechnical construction observation <br /> services for Building 8 of the Everett Riverfront Eclipse Site in Everett, Washington. GeoDesign <br /> prepared a geotechnical report' and addendum' for this project that summarized the site <br /> conditions and provided our geotechnical recommendations. We received a set of building <br /> construction plans for the project prepared by Core Design and dated July 2015. <br /> Members of our geotechnical staff visited the site on a periodic basis between May 2015 and <br /> May 2017 to perform the following tasks: <br /> • Observe the placement of structural fill and evaluate the compaction of the fill by conducting <br /> in situ density and moisture content measurements and by observing proof rolling <br /> • Observe the placement of surcharge material and install settlement markers <br /> • Monitor the surcharge settlement <br /> • Evaluate the compaction of the building subgrade by conducting in situ density and moisture <br /> content measurements and hand probing <br /> 'GeoDesign, Inc.,2017. Report of Geotechnical Engineering Services;Everett Riverfront Eclipse Site;Everett Washington, <br /> dated March 16,2017. GeoDesign Project: Polygon-128-01 <br /> 2 GeoDesign, Inc.,2017. Addendum l;Additional Explorations and Updated Geotechnical Recommendations;Everett <br /> Riverfront Eclipse Site;Everett, Washington,dated May 31,2017. GeoDesign Project: Polygon-128-01 <br /> • <br /> 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 <br /> www.geodesigninc.com <br /> J <br />