Environmental Assessments and Remediation


If a Phase I or II Environmental Assessment or other information identifies areas of a property or facility that are suspected of having contamination, a subsurface environmental investigation is often required. Groundwater and subsurface investigation services provided by GHR include: site characterization, contamination delineation, discrete depth groundwater/soil sampling, monitoring well installation, remedial investigation and feasibility studies, remedial action workplans, and petroleum hydrocarbon product removal.

• Geophysical Surveys
• Gas Chromatographic Field Analysis
• Monitoring Well Installation
• Geophysical Borehole Logging
• Biochemical Characterization
• Test Pits
• Data Analysis

• Pump Tests
• Soil Vacuum Tests
• Monitored Natural Attenuation
• Remediation System Design and Installation
- Construction Management
- System Optimization
- Operation, Maintenance, and Monitoring


Through environmental remedial investigations, GHR develops strategies for cleaning up subsurface contamination. In the mid-Atlantic region, GHR has designed and operated dozens of remediation systems, using a variety of cleanup technologies, tailored to site specific conditions. GHR looks to emerging technologies for the means to expedite the remediation of contamination from groundwater and soils, and to complete cleanup in the most cost effective manner.

• Feasibility Studies
• Excavation and Disposal
• Dewatering
• Groundwater Extraction and Treatment
• Free Product Recovery
• Dual Phase Extraction
• Oil/Water Separators

• Bioreactors
• Carbon Adsorption
• Air Stripping and Sparging
• Soil Vapor Extraction
• Monitored Natural Attenuation
• In Situ Bioremediation
• Chemical Oxidation


Innovative technologies for use with in-situ remediation systems are integral to GHR’s design process. Some contaminated sites that have challenging hydrogeologic characteristics often benefit from emerging technologies such as chemical oxidation and oxygen infusion. The use of new technologies can expedite cleanup to meet regulatory standards, and often lower installation and operating costs.

GHR will help evaluate clients' contaminated sites to design and develop the most appropriate, cost effective remediation approach. As cleanup progresses, GHR critically evaluates test results, rather than just collecting data. By careful analysis of results, often the treatment approach can be modified to better focus treatment strategies to match the evolving site’s conditions.

GHR keeps abreast of scientifically supportable emerging technologies accepted by regulatory agencies so that sites' remediation can be achieved more quickly and at less cost than previously possible. Examples include: monitored natural attenuation, enhanced managed attenuation and chemical oxidation.

Learn more about emerging technologies here.