Hydrogeology
HYDROGEOLOGY
CRA provides a complete range of groundwater resource services. Our staff of geologists, hydrogeologists, and geotechnical engineers is highly experienced in the drilling and installation of wells, and in the field and laboratory testing necessary to determine subsurface conditions, aquifer properties, groundwater flow characteristics, groundwater quality, and fate/transport of contaminants. CRA utilizes visualization techniques to aid in the understanding and presentation of hydrogeologic information. CRA's groundwater services include:
Drilling and Well Construction
- Design and specifications for drilling, well construction, and development
- Installation of small-diameter piezometers through to large-diameter production wells
- Production well/groundwater supply development/wellfield design and construction
Groundwater Sampling and Measurement
- Water quality evaluations
- Sample collection (including low flow sampling)
- Electronic measurement of groundwater levels
Aquifer Testing
- Pumping tests
- Single well response tests
- Packer testing
- Downhole geophysical testing
Extraction and Remediation Design, and Construction and Monitoring
- Design/construction/operation of groundwater
- Vacuum well-point extraction pilot testing
- Pumping and vacuum extraction systems
- Groundwater surface treatment systems
- Design and implementation of in situ remedial systems
Specialty Studies
- Dye-tracing studies in karst terraines
- Bench-scale testing and pilot-scale testing
- Ground-penetrating radar, seismic, and electromagnetic surveys for mapping
Data Evaluation and Computer Modeling
- Mapping groundwater flow regimes and contaminant plumes
- Groundwater modeling
- Three-dimensional visualization of geology and contaminant plumes
- Computerized databases for managing groundwater elevation and contaminant concentration
