Indiana Environment - General: What you need to know

Overview of Indiana's Environmental Rules


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In Indiana, the Indiana Department of Environmental Management (IDEM) is the counterpart of the U.S. Environmental Protection Agency (EPA). IDEM is responsible for protecting Indiana's land, water, and air from pollution. Indiana has been delegated the authority by EPA to administer federal regulatory programs for air emissions, water pollution control, and the management of solid and hazardous wastes. Generally, Indiana follows federal rules for air and water quality management. The state's rules for concentrated animal feeding operations (CAFOs) are stricter than federal rules. The state has a number of waste management rules that are stricter than federal rules, including a comprehensive solid waste management program.


Indiana's air program is shaped by its state implementation plan (SIP), which details basic strategies for implementation, maintenance, and enforcement of the National Ambient Air Quality Standards. As mandated by the federal Clean Air Act (CAA), each state must adopt and submit a SIP to EPA for approval. Indiana's SIP was officially submitted to EPA in January 1972 and is frequently amended to comply with the 1990 CAA amendments. The SIP focuses on permitting, nonattainment areas, HAPs, and numerous other air-related requirements.

IDEM's Office of Air Quality is responsible for administering and enforcing Indiana's air pollution rules.


Indiana is authorized to administer the NPDES permit program and to issue individual and general NPDES permits to specific dischargers. The state also has general permitting authority to cover stormwater discharges. The state generally follows the federal regulations ...

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This special report contains a recordkeeping checklist to help you keep track of your records for major environmental laws and OSHA’s Hazard Communication Standard.

Also included are 3 useful tables which provide:
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  • A list of federal safety recordkeeping requirements.
  • A list of federal recordkeeping requirements for DOT and the Department of Homeland Security as they apply to hazardous material transporters and chemical facilities.
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