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Indiana Department of Environmental Management

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

Legal Authority

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

Priority Ranking System for Hazardous Substances Response Sites

The Priority Ranking System (PRS) is the method, by which the State Cleanup Section prioritizes, for state response actions, those sites contaminated with hazardous substances and petroleum that are excluded from the National Priorities List (NPL). The PRS 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 PRS are assigned a priority status of low, medium or high depending on site characteristics. Priority ranking is subject to change based upon receipt of additional site information, or other relevant factors.

To ensure that State resources are utilized for managing sites that present the most significant risk to human health and the environment, only sites designated by the State Cleanup Program as high or medium priority sites contaminated with hazardous substances will be assigned a project manager. Medium priority sites contaminated with only petroleum and low priorities will be expected to complete site investigation and remediation without direct oversight by the State Cleanup Program through the Independent Closure Process. Regardless of the extent of oversight provided by the State Cleanup Program, responsible parties are required to perform the necessary site characterization and remedial activities. The State Cleanup Program will continue to pursue any actions necessary to ensure the completion of these activities at sites that fail to progress.

State Cleanup Program Site Management Process

The following flow chart provides a basic overview of the site management process employed by the State Cleanup Program for Hazardous Substance Response Sites. The flow chart shows the management process from the time of the referral of the site to the State Cleanup Program to closure with a No Further Action determination.