Specialized Services
Whether it’s a mineral resource evaluation, surface mining operation or shooting range characterization & reclamation, Gredell Engineering staff possess the necessary skills and experience to meet your project goals by providing technical assistance, permitting and design services.
ONSITE WASTEWATER TREATMENT SYSTEM DESIGN & SOIL MORPHOLOGY EVALUATIONS
Gredell Engineering conducts soil morphology evaluations and we design onsite wastewater treatment systems (OWTS) for residential and commercial properties. We are actively involved in preparing professional engineered designs, documents and reports for the Missouri Department of Natural Resources (MDNR) and Missouri Department of Health & Senior Services (DHSS) for OWTS permit approval.
OWTS Services
- Design, layout and permitting of OWTS systems via Missouri Department of Health & Senior Services (DHSS) 19 CSR 20-6.030 on-site sewage systems and county regulatory authorities
- Conventional, Land Application, Drip Irrigation, Low Pressure Pipe, and Lagoon OWTS Design
- Decentralized and cluster OWTS
- Approval for Missouri Department of Natural Resources (MDNR) disposal of wastewater in residential housing developments via 10 CSR 20-6.030
- Karst geological evaluations for OWTS permit approval
MINERAL RESOURCE EVALUATION
Gredell Engineering can assist you with an initial mineral resource evaluation, whether you are wanting to start a gravel, clay or limestone mining operation. With our extensive knowledge of the geology in the state of Missouri and through geologic literature reviews, Gredell Engineering will help evaluate your anticipated mineral resource.
Mineral Resource Evaluation Services
- Limestone, Sand & Gravel Mineral Resource Evaluations
- Metallic Mineral Closure Plans
SURFACE MINING & RECLAMATION
Gredell Engineering provides and assists clients with the preparation, submittal and approval of the Missouri Department of Natural Resources (MDNR) surface mining permits, air operating and construction permits, and National Pollutant Discharge Elimination System (NPDES) stormwater permits for development of open-pit quarry operations. Other services include the preparation of Stormwater Pollution Prevention Plans (SWPPP) and a Spill, Control, and Countermeasures (SPCC) plans for your surface mining operation. For existing surface mining operations, our experienced staff will work with you to release the bond liability of reclaimed land, reclamation variance requests, alternate land use change requests, and request approval of permit revisions involving mined and reclaimed ground near the Solid Waste Management Area (SWMA) in accordance with Missouri Land Reclamation Program (MLRP) regulations.
Surface Mining & Reclamation Services
- Land Reclamation Permit Compliance Evaluation
- Permits, Expansions, Transfers & Amendments
- Bond Release Review & Applications
- Closure & Post Closure Plans
SHOOTING RANGE CHARACTERIZATION & RECLAMATION
Shooting range characterization and reclamation is just another specialized service we provide at Gredell Engineering. Our services include lead determination/delineation of shooting range cumulative shot-fall areas, site characterizations and sample collection, and the identification of lead reclamation and chemical stabilization areas.
Shooting Range Characterization & Reclamation Services
- Site Lead Assessment Plans
- Site Lead Characterization
- Lead Remediation & Reclamation
Shooting Range Complex Renovation:
Provided comprehensive lead site assessment, soil sampling, geotechnical services, recycling, and soil stabilization for renovation of the August A. Busch Memorial Conservation Area Shooting Range Complex Renovation in Weldon Spring, St. Charles County, Missouri. All field data collection, subsequent laboratory analysis, and data evaluation were performed in accordance with the assessment objectives described in the site lead assessment plan. Developed recommendations, procedures, and specifications for the proposed range renovation. Subconsultant to prime consultant Reitz & Jens, Inc. Services completed to date include preliminary site investigation and detailed site investigation at the Ameren Missouri Labadie Energy Center in Franklin County, Missouri. Current and pending work includes landfill design, construction permit application, public involvement, engineering management, groundwater monitoring and statistical analysis, and site access road design. Provide technical assistance for compliance with Franklin County zoning and environmental permitting. Project is ongoing.
Limestone/Dolomite Bedrock Preliminary Evaluation:
Conducted review of available geologic literature sources to identify and evaluate the distribution and apparent thickness of bedrock deposits within the approximately 732-acre site for a potential open-pit quarry mining operation. Prepared summary report describing the results of the literature review, supported by illustrations, tables and maps for future reference. Services provided to date include completion of the detailed site investigation, landfill and recycle pond design, construction permit, St. Charles County landfill license application and operating permit for the Ameren Sioux Energy Center in St. Charles County, Missouri. Prepared modification to construction permit to allow for dry cell disposal of waste in 86-acre portion of the original 183.5-acre landfill and provide ongoing quarterly groundwater monitoring services.
Limestone Mining Plan:
Provided services including the preparation, submittal and approval of the Missouri Department of Natural Resources for a surface mining permit, air operating and construction permit, and a stormwater discharge (NPDES) permit for the development of an open-pit limestone quarry operation located in Cape Girardeau County, Missouri. Services also included the preparation of a Stormwater Pollution Prevention Plan (SWPPP) and a Spill, Control, and Countermeasures (SPCC) plan.Responsible for development and implementation of groundwater monitoring system for NPDES compliance. Duties included preparation and submittal of a Site Characterization Work Plan detailing investigative methods and procedures, field work activities including piezometer drilling and installation, well development, aquifer testing, and monthly water level monitoring, and preparation of a Site Characterization Report describing the findings of the field investigation. Make recommendations for installation of a long-term groundwater monitoring system. Prepare sampling and analysis protocols for regulatory approval and conduct routine water quality sampling and reporting. Work began in 2016 and is ongoing at multiple facilities.
