310 CMR 40.0000 - Massachusetts Contingency Plan (MCP)

December 14, 2007 (effective February 14, 2008)
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2007 Amendments to the MCP

These amendments and technical corrections were published in the Massachusetts Register on December 14, 2007. The new provision at 310 CMR 40.0570 (Requirements for Eligible Persons, Eligible Tenants or Other Persons Seeking to Re-Establish Response Action Deadlines) went into effect on December 14, 2007. The remaining provisions are effective on February 14, 2008.

MOHML Revisions & Corrections
Changes in Reportable Concentrations
See Below

Eligible Person, Eligible Tenant or Other Person Transmittal Form
Web page

"Clean" Version - including changes to the  Reportable Concentrations (RCs)
MS Word 809 KB | PDF 303 KB

"Redline/Strikeout" Version
MS Wiord 245 KB | PDF 162 KB

MCP Technical Corrections
MS Word 343 KB | PDF 190 KB

Summary of Response to Public Comments
MS Word 159 KB | PDF 137 KB

Published Method 1 MCP Standards
These standards may be used prior to the effective date of the Supplemental MCP Amendments as Method 2 Standards pursuant to 310 CMR 40.0982(7).
MS Word 476 KB | PDF 165 KB

Effective July 13, 2007
MS Word 69 KB | PDF 27 KB

Numerical Standards

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The Massachusetts Oil and Hazardous Materials List ("MOHML"), 310 CMR 40.1600

December 14, 2007 (effective February 14, 2008)

The Reportable Quantities (RQs) and Reportable Concentrations (RCs) for hundreds of chemicals. The RQs and RCs are used in combination with the notification requirements specified in Subpart C of the Massachusetts Contingency Plan to determine whether a release to the environment must be reported to MassDEP. 

Online Searchable MOHML
Web page
Alphabetical List
MS Word 832 KB | PDF 442 KB
List by CAS number
MS Word 1 MB | PDF 371 KB

2007 MOHML Revisions & Corrections

Effective 2/14/08
Changes in Reportable Concentrations - The MCP at 310 CMR 40.0360(1) specifies that notification obligations for soil and groundwater data are tied to the Reportable Concentration(s) "in effect on the date of the sample analysis." Given that the MCP amendments that become effective on February 14, 2008 will result in changes to a number of Reportable Concentrations (RCs), parties are advised of the following:

- With respect to contaminants for which the RC will be LOWERED (i.e., set at a lower concentration), parties are only obligated to report if they equal or exceed an RC in effect on the date of the sample analysis.

- With respect to contaminants for which the RC will be RAISED (i.e., set at a higher concentration), MassDEP will exercise enforcement discretion against those parties who do not notify because they are applying the new (February 14, 2008) RCs. This only applies to samples that were analyzed on or after October 17, 2007 (i.e., 120 days prior to February 14, 2008).

MS Excel 57 KB | PDF 49 KB

Summary of Common Reportable Concentrations in Groundwater and Soil

Excerpted from the Massachusetts Oil and Hazardous Materials List
February 14, 2008
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314 CMR 19.00:  Oil Spill Prevention and Response - April 2009

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The Massachusetts DEP Bureau of Waste Site Cleanup has initiated email-based inquiry system.

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