CEC combines practical techniques and extensive experience to investigate and characterize complex groundwater systems.
CEC provides comprehensive hydrogeologic consulting services for projects ranging from simple well installation, groundwater sampling and aquifer characterization to complex modeling of groundwater flow and contaminant transport, often negotiating with regulators when developing design solutions. CEC conducts hydrogeologic studies to support brownfield investigations, permitting for oil and gas sites, permitting and closure for residual waste facilities, RCRA facility investigation/feasibility studies, and Superfund sites. CEC evaluates well field siting and expansions for groundwater resource projects and wellhead protection.
Investigation
CEC has extensive experience with numerous investigative techniques for the assessment of hydrogeologic conditions in a variety of geologic settings, regulatory environments and contaminant scenarios, including:
- Monitoring well and piezometer installation
- Groundwater analytical sampling including conventional purging, low flow and no-purge
- Manual and remote groundwater level monitoring
- Aquifer testing
- Packer testing for permeability estimations and sample collection
- Single-well permeability testing
- Pilot testing for remedial designs
Data Analysis
CEC hydrogeologists employ a variety of analysis techniques to evaluate hydrogeologic data, including:
- 2D and 3D visualization of water level, potentiometric data and water quality data
- Statistical analysis of water quality data
- Analysis of aquifer test data to estimate aquifer properties
- Analytical groundwater modeling to estimate flow and contaminant transport
- Digital groundwater modeling to simulate flow and contaminant transport
- Digital groundwater modeling to make predictions about flow and contaminant distribution after implementation of remedial measures
Remediation
CEC applies knowledge of groundwater flow, groundwater chemistry and contaminant transport to evaluate and design remedial alternatives for groundwater contamination problems. Capabilities include groundwater extraction and treatment using methods such as air stripping, steam stripping and carbon adsorption, as well as separate phase extraction of both light and dense free phase liquids. In-situ groundwater remediation experience includes chemical oxidation, natural and enhanced bioremediation, and phytoremediation. CEC is also experienced with the physical manipulation of groundwater flow, including capture systems and physical barriers such as slurry walls, infiltration trenches and impermeable caps.
