Organization: Illinois Environmental Protection Agency Bureau of Air
Website: http://www.epa.state.il.us/air/
Notes / Source Documents: Illinois follows Federal EPA emission regulations. The complete regulatory documents are listed directly below. The emission regulation tables links are listed under emissions regulations. Illinois also has NOx regulations for specific engines. Please see the attached document below for that information. Please note: The new EPA gas engine regulations will be going in to effect in June 2008.

Complete EPA Spark Ignition(Gas) Engine Rules: http://www.epa.gov/EPA-AIR/2006/June/Day-12/a4919.pdf

Complete EPA Compression Ignition(Diesel) Engine Rules: http://www.epa.gov/ttn/atw/nsps/cinsps/fr11jy06.pdf

Bob Swinford
Phone: (217) 782-9323
Email: epa2111@epa.state.il.us

Dennis Kostrzewski
Phone: 815-814-9113
Email: kdennis478@aol.com

Ed Bakowski
Phone: (217) 782-2113
Email: Ed.Bakowski@illinois.gov