RETAIL BUILDING ON MARGINAL WAY

  • Project Location: Portland, ME
  • Services Provided:
    • Geotechnical consulting.
    • Environmental consulting.
    • A combination of test borings and seismic cone penetration tests (SCPTu) were performed using SGS’s AMS PowerProbe© 9500 VTR to investigate the subsurface conditions.
    • Test pits were excavated to investigate the condition of the existing foundation footings which were reused as part of the building renovation. 
  • Project Summary:
    • The building structure, 17,000 ft2 in footprint, included both demolition and renovation to portions of an existing building structure along with a new expansion.
  • Project Challenges / Innovation: 
    • Geotechnical challenges included marine deposits (soft clay).
    • Environmental challenges include the presence of coal ash and miscellaneous fill explored as part of a Phase II Environmental Site Assessment (ESA). 
    • The subsurface investigation was performed jointly for both the geotechnical and environmental investigation saving overall time and cost to the project.
    • SGS conducted subgrade inspections to inspect suitability or environmentally impacted miscellaneous fill reused during construction. 
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