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Mil 0 <br /> r J / ✓--/ <br /> III/ <br /> / <br /> M ESI GNY ` <br /> 1,\::\ <br /> July 30, 2018 <br /> Polygon Northwest Company <br /> 11624 SE 5th Street, Suite 200 <br /> Bellevue,WA 98005 <br /> Attention: Michelle Dittman <br /> Building 12 Summary Letter <br /> Geotechnical Construction Observation Services <br /> Everett Riverfront Eclipse Site <br /> Everett,Washington <br /> GeoDesign Project: Polygon-128-03 <br /> 3423 315E Drive(Permit No. C1604-044) <br /> 3425 31St Drive(Permit No. C1604-045) <br /> 3427 315L Drive (Permit No. C1604-046) <br /> 3429 3151 Drive (Permit No. C1604-047) <br /> 3431 3151 Drive(Permit No. C1604-048) <br /> 3433 315` Drive(Permit No. C1604-049) <br /> This letter provides a summary of GeoDesign, Inc.'s geotechnical construction observation <br /> services for Building 12 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 /> December 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 /> '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 1;Additional Explorations and Updated Geotechnical Recommendations;Everett <br /> Riverfront Eclipse Site;Everett, Washington,dated May 31,2017. GeoDesign Project: Polygon-128-01 <br /> 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97070 1503.968.8787 www.geodesigninc.com <br />