GRT provides numerous field investigative services, including:
- Remedial investigation
- Hydrologic assessment (bathymetric survey, flow volume/velocity calculation)
- Hydrogeologic assessment (groundwater profiling, aquifer pump test, slug test)
- Monitoring well installation & abandonment
- Environmental sampling & monitoring (soil, groundwater, surface water, sediment, ambient/indoor air, waste)
- Excavation/removal oversight
- Phase I & Phase II ESA
