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UTS Job 23418 Report 22 Soil Inspection Report 08-01-2019 Page 1 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 08-01-2019Soil Inspection Report Report No.22 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates WEATHER:Partly cloudy 80-90° TIME:7:00 AM CONTACT:Bob Levesque of Fulcrum Associates PURPOSE:Observe earthwork construction EQUIPMENT:Deere 450C, 380G, 75G & 992E Excavators; Wacker DPU 6555 & 200Lb. Plate Compactors, CAT 980 & 950 Loaders, and Ingersoll Rand 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 for elevator and stair footings located within the Southern limits of proposed building #2 (see sketch). The trench was excavated to design elevation utilizing the Deere 450 and 80 excavators equipped with a flat cutting edge to minimize sub grade disturbance. Ground improvements were recently completed in this area by installing GCC deep foundation elements. The area was over excavated approximately 12" 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 organic tannin bark. Groundwater was well controlled and de watering was performed as necessary. A 12" thick layer of 3/4" crushed stone was placed and graded over the sub grade. A layer of filter fabric was placed between the crushed stone and sub grade material. The crushed stone base was compacted employing several passes of coverage utilizing the heavy plate compactor exhibiting stable/firm conditions. GCC # 599 was incidentally broken at an approximate depth of 18" below sub grade elevation. The area was excavated down to the top of the broken element and backfilled to sub grade elevation with compacted structural fill. Repairs were coordinated with Jorge Fuentez of Geopier. Installation of drainage utilities continued at the southwest side of building 1. The trench was carried down to design elevation utilizing the Deere 380 excavator. Piping was installed connecting DMH 13 and DMH 12. CB 10 & 11 were also connected to previously installed DMH 13. The 12" diameter HDPE piping was installed and bedded ¾ up the pipe in ¾" crushed stone. The remaining bedding/backfill Page 2 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 08-01-2019Soil Inspection Report Report No.22 Distribution Copy Job Number 23418 Project Halstead Salem Station, 72 Flint Street Salem, MA Contractor Fulcrum Associates material used is the same material generated during excavation generally consisting of F - C gravel and sand, trace silt placing. 12 - 18" thick lifts were placed and graded. Each lift was compacted employing several passes of coverage utilizing the heavy Wacker plate compactor exhibiting stable/firm conditions. Intermittent inspection was performed in this area 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 Bob Levesque 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 Riley Bourque UTS Matt Chace UTS of Massachusetts, Inc. Page 3 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 08-01-2019 Report No.22 Job Number 23418 Project Halstead Salem Station, 72 Flint Stree Salem, MAAttachment UTS of Massachusetts, Inc. Page 4 5 Richardson Lane, Stoneham, MA 02180 781-438-7755 (Voice) 781-438-6216 (Fax) Report Date 08-01-2019 Report No.22 Job Number 23418 Project Halstead Salem Station, 72 Flint Stree Salem, MAAttachment