| http://www.w3.org/ns/prov#value | - Within 12 months, each PM2.5 nonattainment area must make a conformity determination for PM2.5 and within 3 years each State having a nonattainment area(s) must submit to EPA an attainment demonstration (and associated air quality modeling), adopted State regulations to reduce emissions of PM2.5 and its precursors, and other supporting information demonstrating that the area will attain the standa
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