4225 RIVERFRONT BLVD 2019-03-14 - Laserfiche WebLink

GEDESIGN FIELD REPORT 1 of 3 Project Name: ' Everett River Front-Simpson Report 109 q GeoDesign#: i Polygon-127-03 __ _ Date: 6/8/2018 Reports with Unresolved Nonconformance Issues: — Permit: PW1505-005 .. vim . 1 Nick Abdelnour(Polygon) I Randy Allen(City of Everett) j Weather: Clear, 60's 0815/0900 Ron Bowen(Polygon) ,_ Eddy Stevens(Polygon) t Arrival/Departure: Distribution: ' _..__ _a.---------- ..�__.. 1 Doug Ross(Polygon) Kirk Keck(City of Everett) 1.j Paul McKee(City of Everett) , Dave Foster(City of Everett) Prepared By: Ben Weinberg, P.E. m Site Plan(s) m Density Test Summary Signature: ��f»i Attachments. — — ❑ 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 foundation subgrade for Lots 151 and 152. SUMMARY OF OBSERVATIONS: Lot 151: Upon arrival, GeoDesign noted that DDS had completed excavation of the foundation and crawl space area for Lot 151. The exposed soil across the lot area typically consisted of a gray-brown silty SAND with gravel which could be probed less than 1 inch 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. 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. Lot 152: Upon arrival, GeoDesign noted that DDS had completed excavation of the foundation and crawl space area for Lot 151. The lot area required over-excavation up to 1.5 feet below plan subgrade across the lot area, with the deepest portion in the garage area. DDS noted that the installed sewer lateral is beneath the north perimeter footing; they intend on excavating and re-plumbing the sewer lateral prior to backfilling the area with 5/8-inch crushed rock material placed in lifts and compacted with a hoepack. The exposed subgrade across the lot area typically consisted of a gray to 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. It is our understanding that the contractor will be backfilling the over-excavated portion of the lot area and fixing the sewer lateral beneath the north perimeter footing at a later date. 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 indude 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 @i(