Projects
Groundwater Remediation at a Former Bus Barn
EPS was contracted by a financial institution to remediate the groundwater beneath their corporate office that had formerly operated as a bus barn for a county school system. The contamination was due to the historic use of underground storage tanks that provided bus fuel. When EPS began the project, high concentrations of benzene ethyl benzene, toluene, and xylene (BETX) were present underneath the building, and hydrocarbon “free” product was present on the groundwater beneath the former tank pit.
EPS prepared the Corrective Action Plan, secured the injection permit, conducted hydraulic conductivity and geochemical field testing, designed and installed the remediation system, and conducted the groundwater remediation. The remediation included the use of an air sparge/soil vapor extraction system in conjunction with the in situ injection of hydrogen peroxide. All free product hydrocarbon was removed, and the BETX concentrations in groundwater were substantially reduced to near state water quality standards, which are well below the corrective action/remediation thresholds thereby satisfying the state regulatory requirements.
