4413 RIVERFRONT BLVD 2018-02-21 - Laserfiche WebLink

qqi05 3()f-" Vr M 13S DESIGNZu FIELD REPORT_ 1 of 2 Project Name: Everett River Front-Simpson Report: 014 GeoDesign#: Polygon-127-03 Date: 12/19/2016 Reports with Unresolved Nonconformance Issues: Permit. PW 1505-005 D7777777777 Nick Abdelnour(Polygon) Randy Allen(City of Everett) _ Weather:Cloudy/Rain, 30's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 1500/1600 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: �✓1_ _ _ Attac menu: El 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 been on-site to observe the footing and crawl excavation when the ground was frozen or covered in water/ice. At the time, GeoDesign noted an area along the south perimeter which could be probed 1 to 1.5 feet that we recommended be over-excavated and replaced with structural fill. Upon arrival, GeoDesign noted that the exposed footing subgrade, which consisted of a brown and gray silty SAND with gravel, had thawed. In addition to the previously identified area, GeoDesign noted areas of approximately 4 to 6 inches of surficially loose and saturated material along the west perimeter(exhibited yielding underfoot)which we recommend be removed prior to the placement of concrete. The areas requiring over-excavation were clearly marked with orange spray paint. For the remainder of the excavation, the footing subgrade could generally be probed less than 2 inches. Lot 140: Previously, GeoDesign had been on-site to observe the footing and crawl excavation when the ground was frozen or covered in water/ice. At the time, GeoDesign noted discontinuous areas of footing subgrade soil which could be probed 1 to 1.5 feet and areas of footing subgrade soil which appeared to be frozen saturated soil. Today, GeoDesign noted that the footing subgrade, which consisted of a gray silty SAND with gravel, had thawed. In general, GeoDesign noted that the exposed footing subgrade area was covered in 3 to 6 inches of surfically loose and saturated material that exhibited yielding underfoot. GeoDesign also roughly identified an area along the south side of the lot area which could be probed 1 foot. The area in question was submerged at the time of our site visit. GeoDesign recommends that the footing areas for Lot 140 be cleared of loose and saturated material down to underlying firm and unyielding soil and replaced with structural fill. The follow-up site visit should be scheduled when the exposed footing subgrade is not submerged in water so in-place density tests can be taken to verify that the material has been compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. A summary of our observations can be found in the attached Figure 1 John Feltner and Eddy Stevens with Polygon 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 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