Risk-Based Corrective Action For Tank Sites
(updated 1/1/2010)

Current regulations governing cleanup of UST releases are risk-based and are found on pages 13-24.

There are also state regulations governing cleanup of AST releases.

The Department of Natural Resources published a Guidance Document in 2004 that is to be used with these regulations.  Revisions published in 2005 allow use of Tier 1 Risk-Based Target Levels (RBTLs) that are customized for the type of soil found at the site.  These soil-type-specific standards are explained here.

Checklist for UST Removals 
A helpful checklist for owners and their consultants shows what DNR expects to see in the “Closure Report.”

Chemicals of Concern and Lab Methods 
What chemicals to look for when collecting soil and/or water samples at a tank site.

Soil Vapor Sampling
Handy tools for consultants include: DNR Guidance on how to collect soil vapor samples, a training seminar presentation with handouts, and an Excel spreadsheet that allows easy calculation of purge volumes.

Sample Deed Restriction
For use when the approved corrective action plan includes a deed restriction to mitigate an identified risk.

Sample Deed Notice 
For use when USTs are closed in place (i.e., left permanently in the ground).

RBCA Seminars
Free, online seminars are available.

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