Retail petroleum gasoline service station sites are unique in that they are typically located in urbanized areas, strip malls with high traffic levels and on a relatively small property footprint. Soil, groundwater and vapor phase contamination can be located both on and off-site, with significant interaction with underground infrastructure such as steel and fiberglass underground storage tanks (UST’s), dispenser island piping, electrical, etc. Budgets for cleaning up retail petroleum sites are typically very conservative and for orphan sites rely on limited state-funded programs. At active gasoline service stations, maintaining commercial operations without site disruptions is critical.
Approximately 120,000 retail petroleum service station sites are located throughout the US. Service stations are located in both suburban and urban areas with high traffic levels. Soil, groundwater and vapor phase contamination can be located both on and off-site, with significant interaction with underground infrastructure such as steel and fiberglass underground storage tanks (UST’s), dispenser island piping, and electrical conduits. Budgets for cleaning up retail petroleum sites are often limited and many rely on limited state-funded petroleum reimbursement programs. At active service stations, maintaining commercial operations without site disruption is critical.
Resulting Contamination and Environmental Impacts
Most contamination at retail petroleum gasoline service station sites results UST and dispenser island leaks, resulting in gasoline and diesel fuel impacts at concentrations from free-product to the dissolved-phase range. The gasoline additive methyl-tertiary butyl ether (MTBE) is also often found at these sites and requires remediation. In some cases, more complex mixed contaminant plumes can form resulting from migrating chlorinated solvent releases at nearby dry cleaning operations.
Retail Petroleum and Service Station Environmental Solutions
Soil and groundwater remediation solutions at gasoline service station sites may include the following: excavations (tank pulls), soil mixing, groundwater source area treatment, free-product removal, dissolved-phase groundwater plume treatment, plume cut-off barriers, mixed-plume remediation strategies. These solutions can be achieved using well documented, proven and cost-effective in situ approaches such as enhanced desorption, enhanced aerobic biodegradation and/or in situ chemical oxidation (ISCO). REGENESIS provides a range of technologies for use at retail petroleum service station sites which include: PlumeStop, ORC Advanced (powder/pellets), RegenOx ISCO for underground infrastructure compatibility, PersulfOx ISCO.
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