July 21, 2011IN THE MATTER OF:NITROGEN OXIDES EMISSIONS,AMENDMENTS TO 35 ILL.
22,
2011).
On April 22, 2011, the Illinois Environmental Regulatory Group (IERG) filed an
emergency rulemaking proposing identical changes to those in R11-24.
PROCEDURAL HISTORY
On April 4, 2011, the Agency filed a rulemaking proposal to amend Part 217 of theBoard’s air pollution regulations, accompanied by a motion for expedited review.
Case Files 
