subsurface investigation

Advanced Geophysical Services (AGS) provides non-intrusive subsurface investigation services for environmental, engineering, and construction projects. Formed through the acquisition of Advanced Geological Services by EPI Geophysics, AGS brings over 30 years of experience in geophysical investigations and subsurface characterization, with in-house licensed Professional Geologists and experienced geophysicists. The company supports projects across Pennsylvania, New Jersey, New York, Connecticut, Delaware, Maryland, and beyond.

borehole geophysicselectrical resistivityGround Penetrating Radarmicrogravityoil tank sweepSeismic methodsutility locating and mapping

Leading environmental company located in Brooklyn, NY providing environmental services including Phase I Environmental Site Assessment (ESA), Phase II Subsurface Investigations, Soil testing, NYC E-Designation investigation (Hazmat, Air Quality and Noise compliance), Vapor Intrusion Investigation, Air Quality Remedial Action Plans, Noise Remedial Action Plans, NYSDEC spill cleanup, Spill number closure, Contaminated Soil Removal and Disposal, Groundwater Remediation, Petroleum Tank Closure Endpoint Sampling and Report. Certified Minority, Woman-Owned Business Enterprise (MWBE) with the New York City and New York State; Certified as a Disadvantage Business Enterprise (DBE).

air quality impact assessmentasbestos surveysenvironmental site assessmentlead-based paint surveysnoise impact assessmentsite remediationsoil, soil gas and groundwater samplingstorage tank managementvapor intrusion investigationwaste management

Divis Consulting was formed in 2004 to provide project management, geotechnical engineering, construction observation, and subsurface investigation services to the San Francisco Bay Area. Incorporated in 2007, it is registered as a Micro Local Business Enterprise (LBE) with the City of San Francisco since 2008.

construction observationengineering analysisfinite element analysisgeotechnical engineeringlaboratory testing programsproject management