Reactive Barrier System Installation and Maintenance
Trihydro performed site characterization and remedial process optimization for a chlorinated solvent groundwater plume at Travis Air Force Base in California. To support long-term planning for groundwater treatment, Trihydro developed an evaluation process that integrated site characterization data to serve as the basis for potential future remedial alternatives.
Trihydro was contracted to perform a pre-design site characterization and remedial process optimization for a chlorinated solvent groundwater plume at Travis Air Force Base. Following initial subsurface source removal, the groundwater plume was being remediated through a groundwater extraction system connected to a granular activated carbon treatment unit. Trihydro conducted a site characterization to provide additional subsurface data to evaluate potential remedial process optimization alternatives for the remediation of the chemical-affected groundwater. Trihydro developed a work plan, including a detailed field sampling plan approved by the three regulatory agencies overseeing the environmental work conducted at Travis Air Force Base.
The scope of work for the site characterization included:
- Topographic survey
- Soil lithologic characterization
- Groundwater well installations
- Soil and groundwater sampling
- Analytical and biological testing
- Bench-scale column testing for potential remedial approaches (including biological amendments and zero valent iron)
- Aquifer testing
- Groundwater flow modeling
Through implementing the project Health and Safety Plan and integrating Trihydro’s behavior-based safety system, fieldwork was completed without injury or incident. The three regulatory agencies approved the site characterization report.
A critical aspect of the project was providing information and guidance regarding long-term planning for groundwater treatment. Specifically, Trihydro developed a remedial process optimization evaluation that integrates the full suite of site characterization data. The process evaluated the operating parameters of the existing system and provided the basis for identifying potential remedial alternatives to the groundwater extraction system.
