OPERATION and MAINTENANCE GHH provides engineering, design, and construction solutions for environmental concerns in the areas of soil and groundwater remediation, site investigation and assessment, hazardous waste characterization, and landfill closures.

Integrated groundwater treatment and soil bioventing system

Soil remediation systems designed and constructed by GHH include: Soil Vapor Extraction Bioventing Catalytic Oxidation Land Farming Chemical Fixation Groundwater remediation systems designed and constructed by GHH include: Air Stripping Activated Carbon Ultraviolet Oxidation Chemical Treatment Sparging Membrane Filters

GHH has also completed the design and construction of clay caps, GCLs, gas extraction systems, flare units, and leachate recovery systems associated with landfill closures.

GHH's field support services include fully equipped sampling vehicles, a mobile analytical laboratory, emergency response vehicles (DOT hazardous waste certified), and several utility/construction vehicles. With these capabilities, GHH can provide comprehensive turnkey support to our design team, including:

GHH's construction operations are based out of our Citrus Heights shop, and supported by field offices throughout California at various construction sites. GHH maintains a staff of 40-hour OSHA and emergency response trained personnel for our waste management operations.