IL SB3414

Amends Section 27 of the Environmental Protection Act regarding the Board's rulemaking authority and procedures for adopting environmental regulations.

Requires the Department of Commerce and Economic Opportunity to conduct an economic impact study within 30-45 days of the Board's request for proposed rules, addressing benefits, employment effects, small business impacts, and pollution reduction costs.

Mandates the Board hold at least one public hearing on the economic impact of proposed rules with at least 20 days' notice and requires the Board to determine in writing whether a proposed rule has adverse economic impact on Illinois residents.

Allows the Board to adopt emergency regulations without delay during declared disaster emergencies or severe public health emergencies, with hearings and studies conducted while the regulation remains in effect.

Clarifies that significant economic harm or hardship may constitute a threat to public interest, safety, or welfare for purposes of emergency rulemaking under the Illinois Administrative Procedure Act.