4409 30TH DR SE 2019-04-18 - Laserfiche WebLink

GE FIELD REPORT 1 of 2 Project Name Everett River Front-Simpson Report 027 ..... ..... GeoDesign # ; Polygon 127 03 Date: 02/03/2017 1 Reports with Unresolved Nonconformance Issues: Permit: PW 1505-005 Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather: Light Snow, 30's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 0830/0900 Distribution: Doug Ross(Polygon) Kirk Keck(City of Everett) Paul McKee(City of Everett) 1 Dave Foster(City of Everett) Prepared By: Ben Weinberg © Site Plan(s) ❑ Density Test Summary i Signature: fi— Attachments: ❑ Installation Records ❑ Other l Reviewed By: • PURPOSE of VISIT: GeoDesign representative, Ben Weinberg, was on-site part time at the request of John Feltner with Polygon to observe the foundation subgrade for Lots 142 and 143. SUMMARY of OBSERVATIONS: Lot 142: Previously, GeoDesign observed the over-excavation of an area in the northwest corner down to firm and unyielding material. Today, GeoDesign noted that the foundation excavation subcontractor had placed a layer of non-woven geotextile material and backfilled the area with a 2-4 inch recycled concrete material which was compacted into a firm and unyielding mass. Relative compaction of the exposed subgrade material for the rest of the footing area was tested using a Troxler Moisture-Density gauge; in-place density tests indicated that the exposed subgrade material had been compacted to greater than 95% of its maximum dry density as determined by a Modified Proctor analysis. It is the opinion of GeoDesign that the footing subgrade area observed today is currently suitable for support of the intended load. GeoDesign recommends that any surficially loose and saturated material which may build up be removed from the base of the footing area prior to the placement of concrete. Lot 143: Previously, GeoDesign observed the over-excavation of an area on the west 1/3 of Lot 143 down to firm and unyielding material. Today, GeoDesign noted that the foundation excavation subcontractor had placed a layer of non-woven geotextile material and backfilled the area with a 2-4 inch recycled concrete material which was compacted into a firm and unyielding mass. Relative compaction of the exposed subgrade material for the rest of the footing area was tested using a Troxler Moisture-Density gauge; in-place density tests indicated that the exposed subgrade material had been compacted to greater than 95% of its maximum dry density as determined by a Modified Proctor analysis. It is the opinion of GeoDesign that the footing subgrade area observed today is currently suitable for support of the intended load. GeoDesign recommends that any surficially loose and saturated material which may build up be removed from the base of the footing area prior to the placement of concrete. A summary of our observations and density tests taken today can be found in the attached Figure 1 and Nuclear Density Gauge Data. 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 I Seattle,WA 98133 I 206.838.9900 2502 Jefferson Avenue I Tacoma,WA 98402 I 253.203.0095