STATE REGULATORY AGENCY
In Illinois, the counterpart to the U.S. Environmental Protection Agency (EPA) is the Illinois Environmental Protection Agency (IEPA). IEPA is responsible for protecting Illinois's land, water, and air from pollution. Illinois has been delegated authority by EPA to administer and enforce federal regulatory programs for air emissions, wastewater and stormwater discharges, and hazardous waste management. Various state regulatory requirements are more stringent than corresponding federal requirements. The federal Occupational Safety and Health Administration (OSHA) administers workplace safety and health rules for private sector employees in the state
AIR QUALITY RULES
IEPA's Bureau of Air is responsible for administering and enforcing Illinois's air rules. Illinois's air program is shaped by its state implementation plan (SIP). The SIP is a plan detailing the methods by which the state will implement, maintain, and enforce the National Ambient Air Quality Standards (NAAQS). As mandated by the federal Clean Air Act (CAA), each state must adopt and submit a SIP to EPA for approval.
Illinois officially submitted its SIP to EPA in January 1972. However, it is constantly being amended in order to comply with the 1990 CAA amendments. After EPA issues final approval of each amendment to the state's SIP, IEPA will be fully authorized to enforce that amended portion of the SIP. The SIP contains standards addressing various types of air permits as well as pollutant and source-specific emission standards.
WATER QUALITY RULES
Illinois has incorporated many of the federal water pollution control requirements into its regulatory scheme. Examples of this incorporation are ...