35 Ill. Adm. Code 750.420
Phase II - Preliminary Assessment
Section 750
Section 750.420 Phase II
− Preliminary Assessment
a) A preliminary assessment of a release identified for possible
State response should be undertaken by the IEPA. If the reported release
potentially requires immediate removal, the preliminary assessment should be
done as promptly as possible. Other releases shall be assessed as soon as
practicable. The IEPA should base its assessment on readily available
information. This assessment may include:
1) Evaluation of the magnitude of the hazard;
2) Identification of the source and nature of the release;
3) Determination of the existence of a non-State party or parties
ready, willing, and able to undertake a proper response; and
4) Evaluation of factors necessary to make the determination of
whether immediate removal is necessary.
b) A preliminary assessment of releases from hazardous waste
management facilities may include collection or review of data such as site
management practices, information from generators, photographs, analysis of
historical photographs, literature searches, and person interviews conducted as
appropriate. In addition, a perimeter (off-site) inspection may be necessary
to determine the potential for release. Finally, if more information is needed,
a site visit may be performed, if conditions are such that it may be performed
safely.
c) A preliminary assessment should be terminated when the IEPA
determines:
1) There is no release;
2) The source is neither a vessel nor a facility;
3) The release involves neither a hazardous substance, nor a
pollutant or contaminant that may pose an imminent and substantial danger to
public health or welfare;
4) The amount released does not warrant State response;
5) A party responsible for the release, or any other person, is
providing appropriate response, and on-scene monitoring by the government is
not recommended or approved by the IEPA; or
6) The assessment is completed.