4321 30TH DR SE 2017-09-11 - Laserfiche WebLink

M SC )��- S<�\ DESIGNuz FIELD REPORT" 11-of- _ Project Name: Everett River Front-Simpson Report: 021 GeoDesign #: Polygon-127 03 Date 01/09/2017 Reports with Unresolved Nonconformance Issues: Permit: PW1505-005 —Z Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather:Cloudy, 30's Ron Bowen(Polygon) Eddy Stevens(Polygon) J Arrival/Departure:1100/1130;1245/1330 Distribution: -- — - - Doug Ross(Polygon) Kirk Keck(City of Everett) Paul McKee(City of Everett) Dave Foster(City of Everett) I Prepared By: Joe Dapcevich m Site Plan(s) m Density Test Summary Signature: ` Attachments: — ❑ Installation Records El Other I Reviewed By: PURPOSE of VISIT: GeoDesign representative, Joe Dapcevich, was on-site part time at the request of John Feltner with Polygon to observe the foundation subgrade for Lots 159 and 160. SUMMARY of OBSERVATIONS: Lot 159: GeoDesign was informed that the foundation subgrade for 159 had been excavated to the planned elevation before arrival onsite. Soils consisted of native silty sand with gravel. Relative compaction of the exposed footing subgrade was tested using a Troxler Moisture-Density gauge. In-place density tests indicated that the exposed footing subgrade had been compacted to greater than 95% of its maximum dry density as determined by a Modified Proctor analysis. Hand probing the surface with a 1/2"diameter steel foundation rod indicated approximately 1-2" of surficially loose and saturated material and areas of shallow standing water(approximately 1-2"deep). A summary of density tests taken and observations can be found in the attached Figure 1 and Nuclear Density Gauge Data. We continue to recommend removing the water and surficially saturated material prior to pouring of footings. Lot 160: GeoDesign observed the foundation subgrade for Lot 160 being prepared to the planned elevation. Soils consisted of native silty sand with gravel. Relative compaction of the exposed footing subgrade was tested using a Troxler Moisture-Density gauge. In-place density tests indicated that the exposed footing subgrade had been compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. Hand probing the surface with a 1/2" diameter steel foundation rod indicated dense soil conditions. A summary of density tests taken and observations can be found in the attached Figure 1 and Nuclear Density Gauge Data. It is the opinion of GeoDesign that the exposed footing subgrade is currently suitable for support of the intended structure. GeoDesign recommends that any surficially loose or saturated material that may build up under the footing area be removed prior to the placement of concrete. John Feltner with Polygon was notified of our observations prior to our departure from the site. 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 oft he project irrespective oft he presence of our representative.Our work does not include supervision or dire a ion oft he 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 1 Seattle,WA 98133 1 206.838.9900 2502 Jefferson Avenue I Tacoma,WA,98402 1 253.203.0095 i 3