Specialized 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. 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. 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. 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.


  • Congratulations Rickie Roberts!

    CONGRATULATION’S are in order!!  Rickie L. Roberts, P.E., has retired after a 50 year Read More

  • Winderl joins GREDELL Engineering

    Nathan Winderl, E.I., recently joined the staff of GREDELL Engineering Resources, Inc. (Gredell Read More

  • GO CHIEFS!!!!

    Staff are having a GO CHIEFS Pep Rally today!! Jefferson City staff joined in the fun wearing our Read More

  • Connie Walden Co-Presents on Water Upgrades at 2020 MWWC Virtual Training Series

    Connie Walden, Ph.D., E.I., GREDELL Engineering Resources, Inc., co-presented with Elke B. Boyd, Read More

  • Welcome Debbie Hartman

    Debbie Hartman recently joined the staff of GREDELL Engineering Resources,Inc. (Gredell Engineering) Read More

  • Association of Conservation Engineers Virtual Conference

    GREDELL Engineering Resources is sponsoring the 2020 Association of Conservation Engineers Virtual Read More

  • Open House - Celebrating 20th Year in Business!!

    Our Open House yesterday was a huge success. We appreciated seeing so many of our friends and Read More

  • Ribbon Cutting at MO State Highway Patrol Firing Range

    GREDELL Engineering Resources, Inc. (Gredell Engineering) attended the ribbon cutting ceremony at Read More

  • Pendergrass Joins Gredell Engineering

    Gary Pendergrass, P.E., R.G., recently joined the staff of Gredell Engineering as a Senior Project Read More

  • Elke Boyd to Present on Water Upgrades at the 2020 MWWC Joint Annual Meeting

    Elke B. Boyd, P.E., BCEE, Senior Civil Engineer with GREDELL Engineering Resources, Inc., will be Read More

  • 2020 MWEA/AWWA Joint Annual Meeting Cancelled

    Unfortunately, due to the increasing COVID-19 infection rate, employer travel restriction, and Read More

  • Gredell Engineering Continues Internship Program During COVID-19

    Chandler Olmsted recently joined the staff of Gredell Engineering as an engineering intern. Chandler Read More

  • Elke Boyd Presented on Wastewater Irrigation at MRWA Northeast Training Day

    Elke B. Boyd, P.E., BCEE, Senior Civil Engineer with GREDELL Engineering Resources, Inc., presented Read More

  • Staff Attend MWCC Conference

    GREDELL Engineering Resources, Inc. staff recently attended the 2019 Missouri Waste Control Read More

  • City of Lanagan Obtains Grant Funding for Water System Upgrades

    “Access to clean, safe drinking water and reliable, modern wastewater treatment is a necessity Read More

  • Mikel Carlson 25 Years as Geologist

    Mikel Carlson, R.G., of GREDELL Engineering Resources, Inc. is recognized by the Division of Read More

  • 2020 Review

    Welcome 2021!  We all likely agree that 2020 had its ups and downs and all of us are ready to Read More