The Agency may categorically exclude certain classes of projects from a detailed environmental review and public hearing requirement when, by virtue of their limited scope, the projects have no potential for negative environmental impacts. For projects categorically excluded from further environmental review process, the Agency shall provide to the applicant a Categorical Exclusion document summarizing the project. The applicant shall publish a notice and provide public access to the planning documents and the Categorical Exclusion document, allowing 10 days for written public comment. If no objection is raised to the Categorical Exclusion, the Agency shall issue an unconditional approval of the Project Plan. Should concerns be raised over potential environmental impacts, the Agency may proceed with a detailed environmental review under subsection (c) or issue a conditional approval under which the applicant shall incorporate mitigating measures that would resolve the environmental concerns.
For all projects for which the Agency determines there is a potential for negative environmental impacts, the Agency will prepare a written Preliminary Environmental Impacts Determination (PEID) document summarizing the project and potential environmental impacts. The public will be given an opportunity to comment on the project plan and the PEID.
Ill. Admin. Code tit. 35, § 365.330