Environmental Engineering & Consulting Services

Local, State & Federal Permitting Gredell Engineering is one of Missouri’s top engineering consultants in the areas of solid waste management, preliminary and detailed site investigations for environmental permits, permitting for environmental protection, operational consulting for regulated facilities and regulatory consulting. We have completed local, state and federal permit applications, preliminary and detailed site investigations and final designs for various commercial and industrial facilities across the state of Missouri. Regulatory Compliance / Technical Assistance At Gredell Engineering, we apply a broad array of regulatory compliance and technical assistance services for utilities, industry, public agencies and private developers. Our resume includes the preparation of annual compliance calendars, environmental audits, annual and semi-annual air permit reports and emission inventory questionnaires, and employee training for utility waste management, municipal and commercial entities. Our services also include the preparation of project specific Health and Safety Plans (HASP), Quality Assurance Project Plans (QAPP) and Standard Operating Procedures (SOPs). Site Assessments Phase I & II Environmental Site Assessments (ESA) performed by Gredell Engineering follow the current Environmental Protection Agency (EPA) guidelines outlined in 40 CFR Part 312 Standards and Practices for All Appropriate Inquiry (AAI) and the American Society of Testing and Materials (ASTM) guidelines. Services include the review of regulatory databases; land title records, liens and easements; site visits; interviews; and site characterizations consisting of the collection of soil and groundwater samples. Hazardous Waste Gredell Engineering has diverse environmental experience related to hazardous waste, environmental auditing, environmental emergency response, and compliance assistance related to Resource Conservation and Recovery Act (RCRA) treatment, storage and disposal (TSD) facilities. Services include RCRA generator registration assistance, TSD permitting, preparation of remediation and site characterization work plans, Quality Assurance Project Plans (QAPP), and Health and Safety Plans (HASP). Our hazardous waste services include field support, environmental sampling, monitoring and quality control observation, toxic release inventory (TRI) reporting, and assistance with the necessary applications required to obtain local, state and federal permits. Storage Tanks Gredell Engineering has the knowledge and experience providing the services related to petroleum leaking underground storage tanks (LUSTs) and aboveground storage tanks. Our staff have a thorough understanding of Missouri Department of Natural Resources (MDNR) and Missouri Department of Agriculture (MDA) rules, regulations, policies and procedures; the Petroleum Storage Tank Insurance Fund (PSTIF); and the Missouri Risk-based Corrective Action (MRBCA) Petroleum Storage Tank guidance document to execute assigned duties and interact with MDNR and MDA personnel in an efficient and cost-effective manner. Spill Prevention, Control, & Countermeasures (SPCC) Spill Prevention, Control, and Countermeasures (SPCC) plan preparation is another service we can provide at Gredell Engineering. In accordance with the requirements of 40 CFR Part 112, these services include a substantial harm criteria evaluation; site evaluation; inventory, type and contents of oil storage containers; discharge prevention measures and drainage controls; secondary containment evaluations; spill response countermeasures; and personnel training.


  • 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