The Pollution Control Board proposed to amend 35 Ill. Admin. Code 217, Nitrogen Oxides Emissions. Changes would add a provision sunsetting the Nitrogen Oxides SIP Call requirements as set forth in Subpart U that apply to non-electric generating units. Beginning with the 2009 control period (May 1 through September 30), Non electric generating units will no longer be required to hold NOx allowances in an amount equal to their seasonal NOx emissions. These sources will continue to be required to monitor, record, and report seasonal NOx emissions. The deadline for comment is July 25, 2011. http://www.cyberdriveillinois.com/departments/index/register/register_volume35_issue23.pdf pp. 8363-77.