Clow Valve Company, Private LandfillGeolocation: 41.2939, -92.6444

Terracon provides services to Clow Valve Company to assist in adhering to their Consent Agreement with the United States Environmental Protection Agency (US EPA) to monitor groundwater in and around an abandoned coal mine strip that contains waste arc melt baghouse dust. The project involved developing plans to design, install, and monitor six groundwater monitoring wells in accordance with EPA recommended methods. Terracon also developed a closure-cost estimate for 30 years of compliance monitoring and reporting.

Oskaloosa, IA


Associated Office

Des MoinesGeolocation: 41.5767, -93.6226
In 1975 Terracon opened an office in Des Moines. From its roots in geotechnical engineering, the Des Moines office has developed into a successful multi-discipline firm specializing in geotechnical, environmental, and construction materials services. With a staff of over 50, an in-house certified laboratory and drill rig fleet, we are able to provide timely and professional services to our clients. With the goal of building strong client relationships and hiring many employees educated at Iowa Universities has allowed Terracon to thrive in the State of Iowa. To date, we have performed over…