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UTS Job 23418 Report 85 Soil Inspection Report 10-30-2019 Page 1 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-30-2019Soil Inspection Report Report No.85 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates WEATHER:Overcast 50° TIME:7:00 AM CONTACT:Pat Madden of Fulcrum Associates PURPOSE:Observe earthwork construction EQUIPMENT:Deere 450C, 380G, 75G & 992E Excavator, Wacker DPU 6555 & 200Lb. Plate Compactors, CAT 980 & 950 Loaders & IR Pro Pac 110 Series 10 ton Drum Roller TEST METHOD:Sand Cone Nuclear Densometer TITLE:Inspector Staff Engineer EngineerX OBSERVATIONS: This report follows a site visit to observe/test the earthwork for: Footing trench excavation. Footing excavation was performed for interior footings within the eastern limits of building 1. The trench was excavated to design elevation utilizing the Deere 450 excavator equipped with a flat cutting edge (flared teeth) to minimize sub grade disturbance. Ground improvements were previously completed in this area by installing GCC deep foundation elements. The elements were previously excavated to design cutoff elevation. The area was over excavated a minimum 6" below design BOF elevation to provide a cushion/base of material between the elements and the footing. All GCC elements were carefully located and exposed during excavation. The sub grade soil in this area is existing loamy urban fill generally consisting of F - M sand, little gravel, little silt containing wood, organic silt, ash, slag etc. A 6 - 12" thick layer of ¾" crushed stone was placed and graded. Mirafi filter fabric was placed between the sub grade and crushed stone footing base material. The surface of the stone was compacted utilizing the heavy plate compactor exhibiting stable/firm conditions. Some of the select gravel overburden generated during excavation was re used as foundation backfill at adjacent perimeter foundation locations. Exterior foundation backfilling continued @ the northwest side of building 1. The material used is onsite generated common fill from perimeter footing trench excavation generally consisting of F - M sand, some gravel, little silt. An approximately 3' thick wide chimney of clean structural fill was maintained vertically behind the foundation retaining wall during backfilling. This material is 1.5" reprocessed material from the larusso pit. 12 - 18" thick lifts were placed and graded. Each lift was Page 2 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-30-2019Soil Inspection Report Report No.85 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates compacted employing several passes of coverage utilizing the Wacker 1100Lb plate compactor exhibiting stable/firm conditions. The 4" diameter PVC foundation drain was installed after achieving the required invert elevation. The piping was bedded in crushed stone and the stone bedding was wrapped in filter fabric. Work in this area is ongoing. A section of the foundation backfilling was left open until electrical penetration conduits are installed. Plumbing utility trench excavation continued for floor drains within the Northern limit of the garage area of building 2. The trench was carried down to design elevation utilizing the Deere mini excavator. A layer of clean bedding sand was placed at the bottom of the trench. Trench excavation remained incomplete on this date. Inspector Premium Travel Name Time Hours Time M. Chace No 8.00 1 Hr(s) REVIEWED BY: Chuck Fraser Our reports are available in PDF form via email. Please email us at reports@utsofmass.com for more information. cc:Fulcrum Associates Pat Madden Fulcrum Associates Brad Scott Fulcrum Associates Darrin Standish DMS Design Sid Silveira DMS Design Dan Skolski City of Salem Steve Cummings Veitas & Veitas Linas Dabrila DSF Group Paul Bowie DSF Group Benjamin Greene Fulcrum Group Patricia Dwyer UTS Matt Chace DSF Flint Salem LLC Dimitri Kourtis Fulcrum Associates Bob Levesque DSF Advisors Thomas Mazza UTS of Massachusetts, Inc. Page 3 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-30-2019 Report No.85 Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MAAttachment