4431 RIVERFRONT BLVD 2019-03-14 - Laserfiche WebLink

I-MT) 0 ltd VA E ( ESIGN? FIELD REP ofd Project Name: Everett River Front-Simpson Report: 042 GeoDesign#: Polygon-127-03 Date 05/17/2017 Reports with Unresolved Nonconformance Issues: Permit: P W 1505-005 Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather: Clear, 60's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 0845/1000 Distribution: - --- -. --- Doug --- Doug Ross(Polygon) Kirk Keck(City of Everett) 1430/1500 Paul McKee(City of Everett) Dave Foster(City of Everett) Prepared By: Ben Weinberg m Site Plan(s) 0 Density Test Summary Signature: may:--?✓ Attachments. Installation Records m Other Reviewed By: Rt r . PURPOSE of VISIT: GeoDesign representative, Ben Weinberg, was on-site part time at the request of Craig with DDS to observe the foundation subgrade for Lot 234,235,and 239. SUMMARY of OBSERVATIONS: Lot 234: Upon arrival, GeoDesign noted that DDS had completed excavation of the footing and crawl space area for Lot 234. During excavation, DDS identified loose saturated soil along the west half of the site that was over-excavated up to 1.5 feet down to firm and unyielding underlying material. The exposed foundation subgrade across the lot area generally consisted of a gray-brown silty SAND with gravel which could generally be probed less than 2 inches using a 1/2 inch diameter soil probe. GeoDesign noted a vein of material within the over-excavated area approximately 4 feet wide which could be probed 6 inches to 1 foot; GeoDesign recommended placing a non-woven geotextile fabric over this area. GeoDesign observed the placement of the geotextile fabric prior to departing the site today. Relative compaction of the exposed foundation subgrade material 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. Craig with DDS stated that the over-excavated areas would be backfilled with a crushed rock later today. GeoDesign notified the contractor that the over-excavated areas were currently suitable to place backfill material. Lot 235: Previously, GeoDesign noted that DDS over-excavated unsuitable areas for Lot 235. Today, GeoDesign noted that DDS had backfilled the over-excavated area with a 2-inch clean crushed material tamped into a firm and unyielding mass using the bucket of an excavator. It is the opinion of GeoDesign that the exposed foundation area for Lot 235 observed today is currently suitable for support of the intended structure. GeoDesign recommends that any surficially loose and saturated material be removed from the base of the footing area prior to the placement of concrete. Lot 239: Previously, GeoDesign noted that DDS over-excavated unsuitable areas for Lot 239. Today, GeoDesign noted that DDS had backfilled the over-excavated area with a 2-inch clean crushed material tamped into a firm and unyielding mass using the bucket of an excavator. It is the opinion of GeoDesign that the exposed foundation area for Lot 239 observed today is currently suitable for support of the intended structure. The client and contractor were notified of our observations prior to our departure from the site. A summary of our observations 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