MCP Amendments

This page contains information on final 2024 revisions to the Massachusetts Contingency Plan.

2024 Revisions to the Massachusetts Contingency Plan (310 CMR 40.0000)


MassDEP has filed final 2024 revisions to the Massachusetts Contingency Plan (MCP) with the Secretary of State for final promulgation and publication in the Massachusetts Register.

On September 1, 2023, a notice was published in the Massachusetts Register with a link to this page. The 2024 revisions will take effect on March 1, 2024, on which date the revised MCP will be published in full in the Massachusetts Register.

Included below are: a “clean” version of the 2024 revised MCP; a redline version of the 2024 revised MCP showing changes from the current (2019) regulations; and a redline version of the 2024 revised MCP showing changes that were made from the 2019 public hearing draft. These documents are unofficial versions of the amendments made available until the official version of the 2024 MCP is published in the Massachusetts Register

In anticipation of the March 1, 2024 effective date, MassDEP staff will be conducting outreach and training to our staff, LSPs, and the regulated community and posting guidance and supporting materials as they become available. 

Table of Contents

Final 2024 MCP Revisions - Clean Version

A PDF clean version of the final 2024 revisions to the Massachusetts Contingency Plan (310 CMR 40.0000) that will take effect on March 1, 2024.

Final 2024 MCP Clean Version

Redline/Strikeout Comparisons

Summary of Changes Adopted in the Final 2024 MCP Revisions

The documents below summarize comments received and changes incorporated into the final 2024 MCP revisions.

Summary of 2024 MCP Amendments Process and Comments

Response to Public Comments on the Public Hearing Draft of Proposed Amendments to the MCP

Related Information

  • Summary of Numerical Standard Changes

The document below summarizes changes to MCP numerical standards that take effect on March 1, 2024.  Prior to March 1, 2024, the revised Method 1 Groundwater and Soil Standards (Tables 1 through 4) and the revised Method 2 Soil Standards (Table 5) may be used as part of an MCP Risk Characterization pursuant to 310 CMR 40.0982(7).

Summary of Changes to MCP Numerical Standards

  • Updated Shortforms 

12/4/23 The Method 3 Human Health Risk Assessment shortforms are temporarily unavailable.

  • Activity and Use Limitation Forms

The document below contains the Activity and Use Limitation forms that must be used to implement an Activity and Use Limitation on or after March 1, 2024.

AUL Forms

Help Us Improve with your feedback