Illinois: Air
December 2010
Volume
40
Issue
34
The Pollution Control Board proposed to amend 35 Ill. Adm. Code 243, Air Quality Standards. Changes would reflect EPA NAAQS standards. The deadline for public comment is January 3, 2011. http://www.cyberdriveillinois.com/departments/index/register/register_volume34_issue47.pdf pp. 17537-45.