4516 RIVERFRONT BLVD 2022-01-25 - Laserfiche WebLink

GEODESIGN 4R° I\1e�'� REPORT Project Name: 1 Everett River Front-Simpson Report: 035 GeoDesign #: Polygon-127-03 Date: 05/03/2017 Reports with Unresolved Nonconformance Issues: Permit: PW1505-005 lal Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather Clear, 50's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 1630/1700 Distribution: Doug Ross(Polygon) j Kirk Keck(City of Everett) Paul McKee(City of Everett) Dave Foster(City of Everett) Prepared By: Ben Weinberg Attachments: El Site Plan(s) El Density Test Summary Signature: 0-i^ /( ❑ Installation Records ❑ Other Reviewed By: PURPOSE of VISIT: GeoDesign representative, Ben Weinberg, was on-site part time at the request of Craig with DDS to observe the foundation subgrade for Lots 224, 225, 226, 236, 238. SUMMARY of OBSERVATIONS: Lot 224: Previously, GeoDesign noted that the foundation subgrade area(appeared to consist of loosely placed surcharge material) for Lot 224 could be probed 3 feet using a 1/2 inch diameter soil probe and recommended that the material be removed down to firm an unyielding material. Today, GeoDesign noted that DDS had over-excavated the Lot 224 area down 2.5 to 4 feet down to material which could generally be probed less than 4 inches. GeoDesign noted that DDS had over-excavated approximately 5 feet of material in the southeast corner; penetration depths in this area were 3 feet. GeoDesign recommended further investigation as to why the exposed material significantly differs from other material encountered on the site. GeoDesign notified Craig with DDS and John Feltner with Polygon of our observations. Lot 225: Previously, GeoDesign noted that the foundation subgrade area(appeared to poorly compacted fill material to loosely placed surcharge material)for Lot 225 could be probed 1.5 to 3 feet using a 1/2 inch diameter soil probe and recommended that the material be removed down to firm an unyielding material. Today, GeoDesign noted that DDS had over-excavated the Lot 225 area down 1.5 to 3 feet down to material which could generally be probed less than 4 inches. GeoDesign recommended that the over-excavated area be lined with a non-woven geotextile material and backfilled with structural fill material. Craig with DDS stated that the over-excavated areas would be backfilled with a crushed rock or recycled concrete material later this week. GeoDesign notified the contractor that the over-excavated areas were currently suitable to place backfill material. Lot 22(---(--Previousl , GeoDesign noted that DDS over-excavated sections of Lot 226 down to material which had been compacted to Y 9 p greater than 95%of its maximum dry density as determined by a Modified Proctor analysis.Today, GeoDesign noted that DDS had backfilled the over-excavated areas with a 2-inch clean crushed railroad ballast material which had been compacted using the bucket of an excavator. It is the opinion of GeoDesign that the foundation subgrade area observed today is currently suitable for support of the intended structure. GeoDesign recommends that any surficially loose and saturated material be removed from the base of the footing areas prior to the placement of concrete. 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 contractors 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 2502Jefferson Avenue I Tacoma,WA 98402 I 253.203.0095