In June 1989, during the replacement of a 4,000-gallon unleaded gasoline underground storage tank (UST) at the Site, a release was identified from the suction line of the UST. Remedial measures were taken in response to the release, but though subsequent ground water sampling events confirmed a consistent decreasing trend of contaminant concentrations in ground water at the Site, a 2009 sampling event revealed that benzene exceeded its New Jersey Department of Environmental Protection (NJDEP) Ground Water Quality Standard (GWQS). Based on these additional results, an enhanced ground water remedial effort via the subsurface injection of the Oxygen Release Compound (ORC®) was implemented to remediate the low concentrations of benzene to below NJDEP GWQS.
Penn E&R supervised the injection of Advanced Oxygen Release Compound (ORC Advanced™) at the Site in 2010, and after performing two additional rounds of ground water sampling at periods of 6 and 12 months after the injections, all Volatile Organic Compounds (VOCs) at the Site were remediated to the NJDEP GWQS to the extent that a Response Action Outcome (RAO) could be issued to certify completion of the project.
KEY PROJECT FEATURES INCLUDE:
- Licensed Site Remediation Professional (LSRP) Services
- Hydrogeologic and Site Characterization to Investigate Soils and Ground Water
- Implementation of a Ground Water Monitoring Program
- Completion of Ground Water Remediation
- Communication with New Jersey Department of Environmental Protection (NJDEP)