3505 30TH DR 2020-01-22 - Laserfiche WebLink

f M DESlGNz July 30, 2018 Polygon Northwest Company 11624 SE 5'h Street, Suite 200 Bellevue,WA 98005 Attention: Michelle Dittman Building 30 Summary Letter Geotechnical Construction Observation Services Everett Riverfront Eclipse Site Everett,Washington GeoDesign Project: Polygon-128-03 3513 30th Drive(Permit No. C1606-090) 3511 30th Drive(Permit No.C1606-091) 3509 30'h Drive(Permit No.C1606-092) 3507 30"Drive (Permit No. C1606-093) 3505 30"Drive(Permit No. C1606-094) 3503 30"Drive(Permit No. C1606-09.5)' 3501 30th Drive(Permit No.C1606-096) This letter provides a summary of GeoDesign, Inc.'s geotechnical construction observation services for Building 30 of the Everett Riverfront Eclipse Site in Everett,Washington. GeoDesign prepared a geotechnical report' and addendum'for this project that summarized the site conditions and provided our geotechnical recommendations. We received a set of building construction plans for the project prepared by Core Design and dated July 2015. Members of our geotechnical staff visited the site on a periodic basis between May 2015 and July 2018 to perform the following tasks: • Observe the placement of structural fill and evaluate the compaction of the fill by conducting in situ density and moisture content measurements and by observing proof rolling • Observe the placement of surcharge material and install settlement markers 'GeoDesign,Inc.,2017. Report of Geotechnical Engineering Services;Everett Riverfront Eclipse Site;Everett,Washington, dated March 16,2017. GeoDesign Project: Polygon-128-01 2 GeoDesign,Inc.,2017. Addendum I;Additional Explorations and Updated Geotechnical Recommendations;Everett • Riverfront Eclipse Site;Everett,Washington,dated May 31,2017. GeoDesign Project: Polygon-128-01 07 1503.968.8787 www.geodesigninc.com 9450 SW Commerce Circle,Suite 300 I Wilsonville,OR 97