4413 RIVERFRONT BLVD 2018-02-21 - Laserfiche WebLink

�CJA-V-, -�>( g 35 DESIGNuK FIELD REPORT 1 of 3 Project Name: Everett River Front-Simpson Report: 015 GeoDesign # Polygon-127-03 Date: 12/21/2016 Reports with Unresolved Nonconformance Issues: Permit: PWr 15�05-005 Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather:Cloudy, 40's Ron B_owen(Polygon) Eddy_ Stevens s.(_P_o_lv_g_o_n).. Arr-iv–al/-_D—eparture: 1145/1345 Distribution: Doug Ross(Polygon) Kirk Keck(City of Everett) Paul McKee(City of Everett) Dave Foster(City of Everett) Prepared By: Ben Weinberg, E.I.T. m Site Plan(s) m Density Test Summary Signature: 0i� Attachments: Installation Records ❑ Other Reviewed By: PURPOSE of VISIT: GeoDesign representative, Benjamin Weinberg, was on-site part time at the request of John Feltner with Polygon to observe the foundation subgrade for Lots 135 and 140. SUMMARY of OBSERVATIONS: Lot 135: Previously, GeoDesign had identified two areas along the south and west perimeters which could be probed 1 to 1.5 feet and/or was covered in surficially loose and saturated soil. Today, GeoDesign noted that the foundation excavation subcontractor over-excavated the previously identified areas down to firm and unyielding material. Relative compaction of the exposed footing subgrade material was tested using a Troxler Moisture-Density gauge. In-place density tests indicated that the footing subgrade material had been compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. It is GeoDesign's understanding that the over-excavated areas will be lined with non-woven geotextile material and backfilled with 2-inch clean crushed railroad ballast material compacted into a firm and unyielding mass. Lot 140: Previously, GeoDesign noted that the exposed footing subgrade for Lot 140 was covered in approximately 3 to 6 inches of surficially saturated material, which we recommended be removed prior to our footing subgrade evaluation. Today, GeoDesign observed the footing excavation subcontractor remove the surficially loose and saturated material to expose the underlying soil. Generally,the exposed footing subgrade consisted of a gray and brown silty SAND with gravel that could be probed less than 3 inches. GeoDesign noted areas along the south and west perimeter that could be probed 1 to 1.5 feet, which we recommended be removed and replaced with structural fill material. GeoDesign observed the over-excavation of material down to firm and unyielding underlying soils. 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. A summary of density tests taken and observations can be found in the attached Figure 1 and Nuclear Density Gauge Data, John Feltner and Eddy Stevens with Polygon were notified of our observations prior to our departure from the site. The client and contractor were 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 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 Feld 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