Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 750 - ILLINOIS HAZARDOUS SUBSTANCES POLLUTION CONTINGENCY PLAN
Subpart D - HAZARDOUS SUBSTANCE RESPONSE
Section 750.440 - Phase IV - Evaluation and Determination of Appropriate Response-Planned Removal and Remedial Action

1) The IEPA may undertake investigations, monitoring, surveys, testing and other information gathering as appropriate. These efforts shall be undertaken jointly by the IEPA and those state officials responsible for enforcing legal requirements.

2) A major objective of an inspection is to determine if there is any immediate danger to persons living or working near the facility. In general, the collection of samples should be minimized during inspection activities; however, situations in which there is an apparent risk to the public should be treated as exceptions to that practice. Examples of apparent risk include use of nearby wells for drinking water, citizen complaints of unusual taste or odor in drinking water, or chemical odors or unusual health problems in the vicinity of the release. Under those circumstances, a sampling protocol should be developed for the inspection to allow for the earliest possible detection of any human exposure to hazardous substances. The site inspection may also address:

1) IEPA shall prepare a State Priorities List. Such list shall be compiled using the Federal Hazard Waste Ranking System ( 40 CFR 300, Appendix A, as amended.)

2) Ranking of Releases - Similar hazard ranking scores assigned to releases cannot accurately differentiate among risks represented by the releases. Thus, in order to avoid misleading the public that real differences in risk exist, similar scores may be grouped on the State Priorities List.

3) IEPA shall publish a proposed State Priorities List in the Illinois Register for public comment.

4) IEPA shall revise and publish the State Priorities List at least once annually. In addition, revisions shall give notice of the deletion (if any) of releases previously listed.