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UTS Job 23418 Report 74 Soil Inspection Report 10-15-2019 Page 1 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-15-2019Soil Inspection Report Report No.74 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates WEATHER:Partly cloudy 50-60° TIME:7:00 AM CONTACT:Bob Levesque 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 continued within the limits of building 1 (Cl G@6 and H line). 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 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. One pier location GCC #203 was encountered to be approximately 18" lower than the other piers in the group. This pier was repaired using the sono tube detail provided by geopier. A section of 18" diameter HDPE piping was used in lieu of the sono tube to accommodate backfilling and compaction efforts. Installation of water main utilities was performed @ the SSE side of proposed building 3. The trench was carried down to design elevation utilizing the Deere 380 excavator. The trench was over excavated approximately 12" below the utility invert elevation due to the presence of trash and debris below the pipe. The over excavation was replaced with 1.5" imported reprocessed gravel. A layer of Page 2 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-15-2019Soil Inspection Report Report No.74 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates filter fabric was placed over the sub grade. The gravel was compacted utilizing the wacker plate compactor exhibiting stable/firm conditions. Installation of the water main and tees was initiated to accommodate installation of a hydrant and services to proposed building 3. Backfilling was not performed 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 UTS of Massachusetts, Inc. Page 3 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-15-2019 Report No.74 Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MAAttachment UTS of Massachusetts, Inc. Page 4 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 10-15-2019 Report No.74 Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MAAttachment