MassDEP is proposing significant amendments to the Massachusetts Contingency Plan (MCP), 310 CMR 40.0000, as part of the agency’s regulatory reform efforts. The MCP sets forth the procedures and standards for notification, assessment, and remediation of disposal sites resulting from the release of oil and/or hazardous materials to the environment. These regulations govern the response to sudden oil and hazardous material spills, as well as the assessment and cleanup of Brownfields, properties contaminated by past use as industrial or commercial facilities, prior to their redevelopment and productive reuse. Consistent with regulatory reform goals, the proposed MCP amendments enhance regulatory efficiency in a manner that benefits both parties conducting response actions and MassDEP, while maintaining a high standard of environmental protection.
The proposal include several issues specific to vapor intrusion, including the closure of sites with an active sub-slab system and consideration of future buildings (and possible vapor intrusion) on currently vacant land.
The MassDEP website (http://www.mass.gov/dep/service/regulations/newregs.htm#proposed and then scroll down to the MCP revisions) offers the proposed revisions as both a redline/strikeout document and a “clean” (just the new text) version. The spreadsheets documenting changes to the MCP numerical standards are also available to download, as is a 4-page summery of the proposals.
An extended (until May 17, 2013) Public Comment Period will allow reviewers time to develop comments on this substantial package. MassDEP also expects to hold discussion sessions over the next few months to address specific issues in the proposal.