The Pollution Control Board adopted amendments to 35 Ill. Admin. Code 211, Definitions and General Provisions; and 35 Ill. Admin. Code 217, Nitrogen Oxides (NOx) Emissions. The amendments are designed to control NOx emissions from major stationary sources in the nonattainment areas and from emission units including industrial boilers, process heaters, glass melting furnaces, cement kilns, lime kilns, furnaces used in steelmaking and aluminum melting, and fossil fuel-fired stationary boilers at such sources. http://www.cyberdriveillinois.com/departments/index/register/register_volume33_issue39.pdf pp. 13326-394.