This part establishes general provisions and the applicability, permitting, allowance, excess emissions, monitoring, and opt-in provisions for the federal NOX Budget Trading Program as a means of mitigating interstate transport of ozone and nitrogen oxides, an ozone precursor.
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40 CFR Part 97 (PDF)(373 pp, 1 MB)
Federal NOx Budget Trading Program and CAIR NOx and SO2 Trading Programs