Rio Blanco County, CO

Hydrocarbons were identified seeping into a perennial stream that resulted in the state regulatory agency issuing an administrative order to determine sources for the seeps, as well as the extent of impact to groundwater and surface water. Direct push technology was employed to collect groundwater samples, which were analyzed in the field to map the contaminant plume and identify potential sources. Monitoring wells were installed to assess phase-separated hydrocarbon (PSH), and demonstrate plume stability. Air injection was proposed as the remediation technology to treat the dissolved-phase plume, while an eductor-pump was proposed to address PSH recovery.