Geological services we offer range from conducting detailed site characterizations to groundwater monitoring.
Another mainstay, geological services offered by GER range from conducting detailed site characterizations to groundwater monitoring. We provide services relative to drilling oversight, monitoring well and piezometer design/installation, temporary borings, whole-rock coring, geophysical well logging and aquifer testing, groundwater sampling analytical review, technical assistance, monitoring reports, compliance monitoring statistics, state and federal regulatory review and guidance, groundwater modeling and water table contour maps.
SITE CHARACTERIZATION
Another specialty of GER, our site characterization services include the subsurface investigation methods and techniques to properly characterize the geologic and hydrologic conditions underlying a site. Through sample collection and characterization of soil, bedrock and groundwater, our staff geologists possess the experience and expertise in characterizing a site’s geology and hydrogeology.
Site Characterization Services
- Preliminary Site Investigations
- Detailed Site Investigations
- Sample Collection & Characterization of Soil & Bedrock
- Geophysical Investigations
- Sinkhole / Karst Assessment
WELL CONSTRUCTION
GER provides monitoring well and piezometer construction services in general accordance with the Missouri Department of Natural Resources (MDNR) 10 CSR 23-4 regulations. Our well construction experience includes installations in soil and bedrock using drilling methods such as hollow-stem auger (HSA), solid-flight auger (SFA), direct-push, sonic, air rotary and rotary-wash techniques.
Well Construction Services
- Design & Permit Groundwater Monitoring Systems
- Design, Install & Abandon Piezometers & Monitoring Wells
- Well Development
GROUNDWATER MONITORING SYSTEMS & DATA MANAGEMENT
The design, installation, monitoring and data management of groundwater monitoring networks is another specialty here at GER. We design groundwater monitoring systems, and prepare sampling and analysis plans (SAP). Through characterization of the subsurface geology and groundwater quality across the groundwater monitoring network, we apply statistical analysis techniques to determine an appropriate and effective statistical approach in accordance with the regulatory requirements.
Groundwater Monitoring Systems & Data Management Services
- Sample Collection & Preparation
- Special / Routine Groundwater Sampling
- Sampling & Analysis Plans
- Chemical Constituent & Analytical Method Selection
- Long-Term Data Management
- Statistical Analysis Plans & Reporting
HYDROGEOLOGIC FLOW ANALYSES
GER hydrogeologic flow analyses services begin with an extensive description of the subsurface through the collection of soil samples and/or whole-rock obtained during subsurface characterization activities (e.g., drilling). Geophysical well logging to correlate discrete intervals, packer and aquifer testing to determine the hydraulic conductivity value of the geologic strata, and two- and three-dimensional groundwater modeling techniques are just a few of the services we provide at GER.
Hydrogeologic Flow Analyses Services
- Aquifer Characterization
- Groundwater Contour Elevation & Gradient Mapping
- 2D & 3D Groundwater Modeling
Geophysical Survey:
Develop and complete a geological and hydrogeological characterization of an approximately 800-acre lake site. Emphasis was on site-specific rock stratigraphy and characterization of a known karst system at the site. The reservoir will utilize an approximate 100-foot dam. Services included: extensive field reconnaissance to catalog karst features; stream flow measurements to identify gaining/losing sections; and dye tracing.
Groundwater Monitoring & Statistical Analysis:
Services provided included the collection of groundwater samples, water quality analytical review, and groundwater monitoring reports of the monitoring well networks at the Ameren Missouri sites, Sikeston Power Plant, City of Springfield, and others. Services also included the preparation of a Sampling and Analysis Plan (SAP) and the statistical analysis of background water quality data.
Karst Assessment:
Prime consultant with oversight responsibility for extensive geophysical investigation in a karst setting. Performed exploratory drilling, developed conceptual landfill design and conduct frequent coordination meetings with MDNR. Detailed site investigation work plan was developed.
