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IDEM > Environmental Cleanup > State Cleanup > State Cleanup Program State Cleanup Program

Legal Authority

The legal authority for the State Cleanup Program is provided by:

Indiana Scoring Model

The Indiana Scoring Model (ISM) is a method of prioritizing, for state response actions, those hazardous substances response sites that are excluded from the National Priorities List (NPL). The ISM serves as the State’s management tool to address those sites that pose a significant threat to human health and the environment, in addition to assuring the department’s resources are allocated accordingly. Hazardous substances response sites that are evaluated utilizing the ISM are assigned a numerical score from 0 to 100. Site scores do not indicate level of threat; rather, they indicate the potential for contaminant migration. Site scoring is a dynamic process and scores may be subject to change based upon receipt of additional site information, or other relevant factors.

Commissioner's Bulletin

Once a site has been scored using the ISM, it is placed on the Commissioner's Bulletin. The Bulletin helps management assess the sites and determine those sites that will be addressed and ensures that state resources are allocated properly. The Bulletin is published annually in the policy, non-rule section of the Indiana Register.