Hydro Geo Chem, Inc. has an active practice providing expert witness testimony and litigation support. Our staff has provided expert witness testimony in the following areas:

  • In-situ remediation of soil and groundwater
  • Vapor transport of contaminants through unsaturated soil
  • Design and performance of soil vapor extraction systems
  • Landfill gas generation
  • Groundwater flow through fractured rocks
  • Groundwater resource adjudication
  • Surface water/groundwater interactions
  • Fate and transport of petroleum hydrocarbons
  • Environmental impacts to real estate values
  • Dating of environmental releases for insurance claims
  • Allocation of environmental liabilities

Our expert witnesses are supported by a technical staff experienced in document management and preparation of trial exhibits. We have full in-house capabilities to prepare high quality artistic and computer-generated graphics for trial exhibits including computer animations of numerical modeling results.

51 West Wetmore Road, Suite 101, Tucson, Arizona 85705-1678

Toll Free (800) 727-5547, Tel. (520) 293-1500, Fax (520) 293-1550, Email

3038 East Cactus Road, Suite 3, Phoenix, Arizona 85032-7113
(480) 421-1501, Fax (480) 425-8794
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