4303 RIVERFRONT BLVD 2019-03-14 - Laserfiche WebLink

\EOLJEsRz FIELD REPORT Project Name: �.u, �. �� v � „ Everett rett River Front-Simpson • Report: 107 I GeoDesign #: Polygon-127-03 Date: 6/1/2018 I Reports with Unresolved Nonconformance Issues: Permit: PW1505-005 �... ..c..a�ti�. ._a... o, arac xnm:�ao....e aww�ou�.a� •. ?. r .....r..'.�� '. °�' ........ Nick Abdelnour(Polygon) Randy Allen(City of Everett) i Weather: Clear, 60's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 1100/1130 Distribution: Doug Ross(Polygon) Kirk Keck(City of Everett) Paul McKee(City of Everett) Dave Foster(City of Everett) Prepared By: Ben Weinberg, EIT El Site Plan(s) Density Test Summary Signature: Attachments: ❑ Installation Records 0 Other Reviewed By: PURPOSE of VISIT: GeoDesign representative, Ben Weinberg, was on-site part time at the request of Craig with DDS to observe foundation subgrade for Lot 149 and 150. SUMMARY OF OBSERVATIONS: Lots 149: Previously, GeoDesign noted that DDS had over-excavated 1-2 feet below plan subgrade across most of the lot area. Today, GeoDesign noted that DDS had backfilled the over-excavated lot areas with 2-inch clean crushed rock compacted into a firm and unyielding mass. It is our opinion that the exposed foundation subgrade observed today is currently suitable for support of the intended structure. GeoDesign recommends that any surficially loose and saturated material that may be generated be removed from the base of foundation areas prior to the placement of concrete. Lots 150: Upon arrival, GeoDesign noted that DDS had completed excavation of the foundation and crawl space area for Lot 150. The lot area,which was previously covered with a temporary sales office and landscaping, required over-excavation ranging from 2 inches to 3 feet below plan subgrade. The exposed soil across the lot area typically consisted of a gray-brown silty SAND with gravel which could be probed less than 2 inches using a 1/2 inch diameter soil probe. Relative compaction of the exposed foundation subgrade soil was tested using a Troxler Moisture-Density gauge; in-place density tests indicated that the material had been compacted to greater than 95% of its maximum dry density as determined by a Modified Proctor analysis. GeoDesign notified the contractor that the excavation observed today is currently suitable for placement of backfill material. It is our understanding that the contractor intends to backfill the excavation with 2-inch clean crushed rock material compacted into a firm and unyielding mass next week. A summary of our observations and density tests taken today can be found in the attached Figure 1 and Nuclear Density Gauge Data. The contractor was notified of our observations. This report presents opinions formed as a result of our observation of activities relating to geotechnical engineering or environmental services. We rely on the contractor to comply with the plans and specifications throughout the duration of the project irrespective of the presence of our representative. Our work does not include supervision or direction of the contractor,the contractor's employees or agents. Our firm is not responsible for site safety.This field report is a DRAFT representation of our field observations,testing,and preliminary recommendations.The report can only be considered final upon review of the GeoDesign project manager,as indicated by initials in the"Reviewed By"section. 10700 Meridian Avenue North,Suite 402 I Seattle,WA 98133 I 206.838.9900 2502 Jefferson Avenue I Tacoma,WA 98402 I 253.203.0095