Geotechnical Engineering

Offering the Following Services

  • Subsurface investigations, land- and water-based
  • Geotechnical analyses and design and construction recommendations
  • Heavy construction experience
  • Soft soil issues (stability, settlement)
  • Soil improvement
  • Instrumentation
  • Geosynthetic design and construction
  • Earthwork design and construction
  • Construction QA/QC and Management
  • Project Management
  • EH&S awareness/OSHA HAZWOPER certification

Representative Geotechnical Project Experience

MaineDOT Riverside Street Retaining Wall, Portland, ME; geotechnical analyses, retaining wall/lightweight foamed concrete fill embankment design to mitigate settlement, and preparation of special provisions and geotechnical-related drawings; SchonewaldEA retained by MaineDOT prime consultant (VHB).  Subsequently retained by MaineDOT to provide geotechnical construction support.

Maine Turnpike Authority, Interstate Overpass Bridge Rehabilitation/ Modernization, Falmouth, ME; geotechnical investigation and geotechnical recommendations for design and construction; geotechnical construction support; SchonewaldEA retained by MTA prime consultant (HNTB).

Trashrake Structure Foundations, Shawmut Hydroelectric Project, Kennebec River, Shawmut, ME; preliminary geotechnical investigation (ledge profile), including water- and land-based subsurface explorations with rock coring and report preparation; SchonewaldEA retained by NextEra Energy.

US-EPA/MaineDEP Superfund Site Remediation, OU1 Remedial Action, Former Callahan Mine, Brooksville, ME; comprehensive geotechnical investigation and analyses of former tailings impoundment to develop baseline geotechnical conditions and support the relocation of ore pad waste to the tailings impoundment; SchonewaldEA retained by prime engineer to remedial action contractor.

MaineDOT Subsurface Exploration Programs for multiple bridge, highway, and traffic projects located throughout ME; exploration program development, utility clearance and field coordination, oversee and log geotechnical explorations including in-situ vane shear testing, undisturbed tube sampling, and rock coring, boring log and geotechnical report preparation; SchonewaldEA retained by MaineDOT and MaineDOT prime consultants.

MaineDOT Overhead Sign Bridge Foundations Interstate-295, South Portland, ME; review contractor’s design submittal for drilled shafts with helical soil and rock anchors; observe and document contractor’s pull-out load testing; SchonewaldEA retained by MaineDOT.

MaineDOT U.S. Route 1 Overhead Signs, Brunswick, ME; geotechnical assessments, including subsurface explorations and report preparation; SchonewaldEA retained by MaineDOT prime consultant (VHB).

MaineDOT U.S. Route 1 Intersection Improvements, Kittery, Old Orchard Beach, Orland, and Waldoboro, ME; geotechnical assessments, including subsurface explorations and report preparation; SchonewaldEA retained by MaineDOT prime consultants (GPCEI, HNTB, and VHB).

MaineDOT U.S. Route 9 Traffic Calming Measures and Pedestrian Accommodations, Biddeford, ME; geotechnical assessment; SchonewaldEA retained by MaineDOT prime consultant (TY Lin).

Geotechnical Instrumentation & Stability Assessment, Berm Constructed Over Soft Organic Soils, Colebrook Municipal Landfill, Colebrook, NH; work plan development, test borings with slope inclinometer installation, monitoring, data reduction and interpretation; SchonewaldEA retained by Casella Waste Management.

Wyman Embankment Dam Crest Widening, Kennebec River, Moscow, ME; design development, construction document preparation, and construction oversight for the widening of the crest of the 1/2-mile long embankment dam; SchonewaldEA retained by NextEra Energy.

Enterprise Rent-A-Car, Portland International Airport, Portland, ME; geotechnical assessment, including subsurface exploration program, development of geotechnical design and construction recommendations, and report preparation; SchonewaldEA retained by prime consultant (Sebago Technics).

Draft Tube Replacement, Deer Rips Hydroelectric Project, Kennebec River, Auburn, ME; construction document preparation and environmental permitting support; construction oversight; SchonewaldEA retained by NextEra Energy.

Construction Quality Control and Quality Assurance Plan Development for Earthwork and Geosynthetics Construction, Atlanta, MI

Select representative projects for which Be Schonewald was responsible prior to founding SchonewaldEA:

Mainline Widening, Maine Turnpike–Interstate-95, project manager and senior engineer for subsurface investigations and geotechnical recommendations for 11 miles of interstate widening and modernization,  Saco/ Scarborough, Wells/Kennebunk, and Biddeford/Saco, ME

MaineDOT Bridge Reuse, project manager for investigation of existing timber pile substructure and geotechnical recommendations, Fryeburg, ME

Land Level Transfer Facility, Bath Iron Works, project manager for water-based subsurface investigations and geotechnical design recommendations, Bath, ME

Geotechnical Instrumentation for Embankment Performance Monitoring, including stability, settlement, pore pressure dissipation, and strength gain; design, installation, and monitoring; multiple sites ME, NH, NY.

Construction Quality Assurance, including:

  • Rock anchors for large-diameter penstocks, Penacook, NH;
  • Caisson foundations, Hartford, CT;
  • Drilled high-capacity mini-piles, Boston, MA;
  • Stone columns, Biddeford, ME;
  • Wick drains, Norridgewock, ME;
  • Earthwork, multiple sites;
  • Geosynthetics, multiple sites;
  • Geotechnical instrumentation, multiple sites

Construction Quality Control and Instrumentation, West Branch Interceptor Tunnel, Staten Island, NY

Subsurface investigations and geotechnical recommendations for design and construction:

  • Correctional Facility Expansions, S. Portland & Charleston, ME
  • PCC Satellite Plant, International Paper Mill, Jay, ME
  • Pipeline Replacement, Oil Storage Terminal, South Portland, ME
  • Sludge Lagoon System, Schoeller Technical Papers, Pulaski, NY
  • Lagoon System, Wastewater Treatment Facility, Exeter, NH
  • Soil Improvement Design, Retail Development, Biddeford, ME
  • Interstate-93 Widening and Mall Access Cantilever Bridge, Salem, NH
  • MBTA Service & Inspection Building, Boston, MA
  • Multiple Commercial and Retail Developments, Soft Soils/ Unsuitable Fills, Shallow Bedrock, and/or Constructability Issues, NH and ME

Geotechnical Review on behalf of Maine DEP, Applications for Ashfill Expansions, Regional Waste Systems, S. Portland, ME

Geotechnical and Hydrologic Design and Regulatory Approvals, 285-acre Design-Build Section 6/7 – Fresh Kills Landfill Closure, Tully Construction for NYCDOS, Staten Island, NY

Geotechnical and Hydrologic Design and Permitting, Proposed Phase VI Expansion, Central Landfill, Rhode Island Resource Recovery Corporation, Johnston, RI

Investigation of Foundation Soil Failure and Evaluation of Remaining Facility Capacity on behalf of potential purchaser, Consolidated Waste Services Landfill, Norridgewock, ME

Soil Improvement Design, Permitting, and CQA / Engineer of Record, WM-Crossroads Landfill, Norridgewock, ME

Geotechnical Instrumentation & Stability Monitoring, Deep Excavation for 1.0M cy Waste Relocation, WM-Crossroads Landfill, Norridgewock, ME

CCCH – Interstate-289, site reconnaissance, subsurface investigation, and geotechnical analyses, Williston/Colchester, VT