Site Assessment, Remediation and Temporary Solution
Petroleum Impact in GW-1 Area
A City-owned a property that was once a former fuel oil depot was acquired for open space and protection of a Class A surface water body. Oil was discovered in soil and groundwater at the property with the potential to impact surface water and nearby municipal drinking water wells. In 2001, the City received a Notice of Non-compliance from MassDEP for failure to perform response actions under the Massachusetts Contingency Plan.
Since ES&M's involvement, the Site has been in compliance with the MCP and is currently in Remedy Operation Status with a Temporary Solution.
ES&M reviewed MassDEP files related to the site and developed an approach to return the site to MCP compliance. We performed preliminary and comprehensive site assessments that identified LNAPL near the surface water, and defined the horizontal and vertical extent of impact. We designed and implemented a groundwater and LNAPL recovery system that operated for four years, which eliminated LNAPL and reduced petroleum concentrations. We subsequently implemented a sulfate-enhanced biodegradation program as a definitive and enterprising step to continue to make progress towards a permanent solution.