Hazardous Waste Program

Missouri Risk-Based Corrective Action, or MRBCA

Fact Sheet | Rules Subgroup | Long Term Stewardship |
Risk-Based Remediation Rule Workgroup Background | MRBCA - Tanks | Updates

Tier 1 Risk-Based Target Levels to be Updated in 2014

In 2014, the department’s Hazardous Waste Program will be updating the Tier 1 RBTLs found in Tables B-2 through B-10 of the Missouri Risk-Based Corrective Action (MRBCA), guidance document. The update pertains only to the departmental MRBCA Tier 1 Risk-Based Target Levels (RBTLs) and not to the RBTLs in the Missouri Risk-Based Corrective Action Process for Petroleum Storage Tanks guidance document (Tanks RBCA).  For additional information regarding the RBTL update, please visit our MRBCA RBTL update page.

Departmental Technical Guidance

The Risk-Based Corrective Action Technical Guidance is published by the Missouri Department of Natural Resources' Hazardous Waste Program.

The Hazardous Waste Program administers two risk-based corrective action processes:

The MRBCA process detailed in the guidance below provides a policy for remediation decisions at contaminated sites. The process is used to determine site-specific cleanup standards that are protective of human health and the environment under current and future site use and in consideration of other site-specific characteristics.

The final guidance is posted below. Updates made to the guidance since the initial version was released in April 2006 have been incorporated into this version of the guidance. Information regarding each specific update can be accessed on the MRBCA Updates web page. Information will be posted to this and the updates page regarding any future changes, and the guidance below will be amended accordingly. 

Departmental Missouri Risk-Based Corrective Action (MRBCA) Technical Guidance
(Section 1-13)
(April 2006, including all subsequent updates)

Departmental Missouri Risk-Based Corrective Action (MRBCA) Technical Guidance (Appendices) (April 2006, including all subsequent updates)

Missouri Risk-Based Corrective Action Process Rule

The Risk-Based Corrective Action Process rule, 10 CSR 25-18.018, became effective on Oct. 30, 2009. The full text of the rule is available in the online edition of the Code of State Regulations.

Fact Sheet Replaces Oct. 20, 2006 - MRBCA Policy about Off-site Groundwater Contamination (06/10)

The Oct. 20, 2006, “Policy Statement to Be Incorporated in the MRBCA Guidance" was replaced with a new fact sheet, Closure of Sites with Contamination off the Source Property.  The new fact sheet supersedes the Oct. 20, 2006 policy. For more information about the technical bulletin, contact the Brownfield Voluntary Cleanup Program at 573-526-8913.

New Fact Sheet Regarding Management of Contamination Originating off the Property (06/10)

The department developed a new fact sheet titled Management of Contamination Originating off the Property. The fact sheet addresses situations where contamination has migrated onto a Brownfields/Voluntary Cleanup Program site.  For more information regarding the fact sheet, contact the Brownfields/Voluntary Cleanup Program at 573-526-8913.

Additional technical bulletins and fact sheets pertaining to MRBCA, the Brownfields/Voluntary Cleanup Program and other hazardous waste-related issues, are available on the department's publications Web page.

Technical Guidance Sections listed individually:
(Same as above; April 2006, plus all subsequent updates published in June 2006 and June 2008)

Note icon. Note: All the files listed below are available in Adobe® Acrobat® format.

Technical Guidance Appendices listed individually: (Same as above; April 2006, plus all subsequent updates published in June 2006 and June 2008)

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