The Missouri Air Conservation Commission adopted a statewide rule to reduce oxides of nitrogen, or NOx, emissions from electric generating utilities. Missouri's statewide NOx rule is intended to improve air quality in the St. Louis ozone nonattainment area. Missouri's statewide NOx rule, 10 CSR 10-6.350, will reduce the emissions of NOx from electric generating units and establishes a NOx emissions trading program available for use by electric utilities throughout the entire state.

The applicability sections of rules 10 CSR 10-6.350 and 10 CSR 10-6.360 was revised to clarify that these rules will not apply to any entity or source subject to and implementing the requirements of rule 10 CSR 10-6.364. These revisions were effective July 30, 2009.

Administrative Rule for NOx Banking and Trading

10 CSR 10-6.350 64 KB
The purpose of this rule is to reduce the emissions of NOx and establish a NOx emissions trading program for the state of Missouri. The reductions in NOx emissions will reduce the transport of ozone and its precursors within the state of Missouri and to other