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G EO DESIGN? qL410 jo k > sE FIELD RE��PORT 0 Project Name: Everett River Front-Simpson Report: 121 GeoDesign#: Polygon-127-01 Date 9/29/2016 Reports with Unresolved Nonconformance Issues: Permit: PW1505-005 p we(.0d -01% rt�� --s:�-�_a�k�. .au;':"m: .�;-�+?a_"�='-E�.._.-s-. max---...a;,_.,. "�;-^_;--: .:« °. --,•r<,d.�,1� -�a�,;.+§"max:,:-�;�.'�°��=^ fr��^-.. :�-^;� Nick Abdelnour(Polygon) Randy Allen(City of Everett) Weather:Clear,60's Ron Bowen(Polygon) Eddy Stevens(Polygon) Arrival/Departure: 0830/1100 Distribution: Doug Ross(Polygon) Kirk Keck(City of Everett) & 1615/1700 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: ^-- Attachments: 0 Installation Records ❑Other Reviewed By: 7e,4 PURPOSE of VISIT:GeoDesign representative, Benjamin Weinberg,was on-site part time at the request of John Feltner with Polygon to observe the foundation excavatons for Lots 162, 163, and 125. SUMMARY of OBSERVATIONS: Lots 162&163: • Upon arrival, GeoDesign met with John with Polygon. GeoDesign noted that the foundation excavation subcontractor had completed removing approximately 2 feet of material from the previously identified area on the east half of Lot 163. The exposed subgrade material at the base of the over-excavated area consisted of a dark brown sandy SILT with trace to minor organics and debris which could be penetrated 1 to 2.5 feet using a 1/2 inch diameter soil probe. GeoDesign recommended that the base of the over-excavated area be lined with a non-woven filter fabric and backfilled with a 2-inch clean crushed railroad ballast material. Today, GeoDesign observed the lining of the base of the over-excavated areas on the east half of Lots 162 and 163 with Mirafi 140N nonwoven filter fabric and backfilled with 2-inch clean crushed railroad ballast which had been compacted into a firm and unyielding mass. It is the opinion of Geodesign that the foundation subgrade area observed today is currently suitable for support of the intended structure. Lots 125 and 126: GeoDesign noted that the foundation excavation subcontractor had completed excavation of the footing and crawl space area for Lots 125 and 126 prior to our arrival on-site. For Lots 125 and 126, GeoDesign noted that the exposed foundation subgrade consisted of gray silty fine SAND with gravel. For Lot 125, penetration depths encountered along the east perimeter of the excavation were generally less than 2 inches and penetration depths encountered on the south,west, and north perimeters of the excavation ranged from 8 to 12 inches. For Lot 126, penetration depths encountered along the north perimeter was less than 3 inches and penetration depths along the east, south, and west perimeters ranged from 6 to 12 inches. Relative compaction of the exposed foundation subgrade was tested using a Troxler Moisture-Density gauge. In-place density tests taken for Lots 125 and 126 indicated that the material had been compacted to less than 95%of its maximum dry density as determined by a Modified Proctor analysis, ranging from 87%to 92%. Based on our observations, it appeared that the top 8 to 12 inches of material was loose; pin resistance while driving for the in-place density tests significantly increased at these depths.). GeoDesign notified the client of our observations and recommended that the top 1 foot of the foundation subgrade areas for Lots 125 and 126 be scarified and re-compacted to greater than 95%of its maximum dry density as determined by a Modified Proctor analysis. 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