tools

MCP/LSP Services

  1. GEC filed a Downgradient Property Status (DPS) for a client.  In filing the DPS we demonstrated that though on-site fuel oil contamination existed, a petroleum-based solvent plume emanated from an abutter.  The MADEP agreed, issuing an order to remediate the dry cleaning solvent from both properties and saving our client thousands.
  2. During redevelopment, a client found that a beautiful farmscape hid a leaking underground storage tank.  Contamination from the tank extended below the footprint of a proposed residential building.  GEC assisted the client in completing assessment and remediation during redevelopment thereby completing necessary response actions without delaying the construction process. 
  3. A disposal site is located at the edge of a Potentially Productive Aquifer (PPA), which is a potential source of drinking water  therefore conservative groundwater clean-up standards apply.  GEC conducted extensive hydrogeologic assessment demonstrating the site is really outside the PPA, and submitted supporting documentation to the Massachusetts Department of Environmental Protection.  Reclassification of the aquifer saved the client significant remediation costs.
  4. More than ˝ inch product was measured in a monitoring well, due to a mineral oil release.  GEC completed a weight-of-evidence evaluation demonstrating that less than ˝ inch of product exists in the aquifer. Other investigations demonstrated that the product was not a continuing source of soil, groundwater or soil vapor contamination.  As a result, a Response Action Outcome was achieved.
  5. At an industrial property, groundwater contaminated with 1,1,1-trichloroethane (1,1,1-TCA) migrated towards a stream supplying a drinking water reservoir.  GEC used an AT-123D model to predict of 1,1,1-TCA levels near the stream.  The results indicated that future levels of 1,1,1-TCA in the groundwater plume, near the stream, would not exceed drinking water standards and groundwater remediation was not necessary.