Code of Federal Regulations > Title 40 > Chapter I > Part 97 - PART 97—FEDERAL NOX BUDGET TRADING PROGRAM, CAIR NOX AND SO2 TRADING PROGRAMS, CSAPR NOX AND SO2 TRADING PROGRAMS, AND TEXAS SO2 TRADING PROGRAM

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

Subpart A [§ 97.1 - § 97.7] - Subpart A—NOX Budget Trading Program General Provisions

Subpart B [§ 97.10 - § 97.14] - Subpart B—NOX Authorized Account Representative for NOX Budget Sources

Subpart C [§ 97.20 - § 97.24] - Subpart C—Permits

Subpart D [§ 97.30 - § 97.31] - Subpart D—Compliance Certification

Subpart E [§ 97.40 - § 97.43] - Subpart E—NOX Allowance Allocations

Subpart F [§ 97.50 - § 97.57] - Subpart F—NOX Allowance Tracking System

Subpart G [§ 97.60 - § 97.62] - Subpart G—NOX Allowance Transfers

Subpart H [§ 97.70 - § 97.76] - Subpart H—Monitoring and Reporting

Subpart I [§ 97.80 - § 97.88] - Subpart I—Individual Unit Opt-ins

Subpart J [§ 97.90 - § 97.90] - Subpart J—Appeal Procedures

Subpart AA [§ 97.101 - § 97.108] - Subpart AA—CAIR NOX Annual Trading Program General Provisions

Subpart BB [§ 97.110 - § 97.115] - Subpart BB—CAIR Designated Representative for CAIR NOX Sources

Subpart CC [§ 97.120 - § 97.124] - Subpart CC—Permits

Subpart DD - Subpart DD [Reserved]

Subpart EE [§ 97.140 - § 97.144] - Subpart EE—CAIR NOX Allowance Allocations

Subpart FF [§ 97.150 - § 97.157] - Subpart FF—CAIR NOX Allowance Tracking System

Subpart GG [§ 97.160 - § 97.162] - Subpart GG—CAIR NOX Allowance Transfers

Subpart HH [§ 97.170 - § 97.175] - Subpart HH—Monitoring and Reporting

Subpart II [§ 97.180 - § 97.188] - Subpart II—CAIR NOX Opt-In Units

Subpart AAA [§ 97.201 - § 97.208] - Subpart AAA—CAIR SO2 Trading Program General Provisions

Subpart BBB [§ 97.210 - § 97.215] - Subpart BBB—CAIR Designated Representative for CAIR SO2 Sources

Subpart CCC [§ 97.220 - § 97.224] - Subpart CCC—Permits

Subpart DDD - Subparts DDD-EEE [Reserved]

Subpart FFF [§ 97.250 - § 97.257] - Subpart FFF—CAIR SO2 Allowance Tracking System

Subpart GGG [§ 97.260 - § 97.262] - Subpart GGG—CAIR SO2 Allowance Transfers

Subpart HHH [§ 97.270 - § 97.275] - Subpart HHH—Monitoring and Reporting

Subpart III [§ 97.280 - § 97.288] - Subpart III—CAIR SO2 Opt-in Units

Subpart AAAA [§ 97.301 - § 97.308] - Subpart AAAA—CAIR NOX Ozone Season Trading Program General Provisions

Subpart BBBB [§ 97.310 - § 97.315] - Subpart BBBB—CAIR Designated Representative for CAIR NOX Ozone Season Sources

Subpart CCCC [§ 97.320 - § 97.324] - Subpart CCCC—Permits

Subpart DDDD - Subpart DDDD [Reserved]

Subpart EEEE [§ 97.340 - § 97.343] - Subpart EEEE—CAIR NOX Ozone Season Allowance Allocations

Subpart FFFF [§ 97.350 - § 97.357] - Subpart FFFF—CAIR NOX Ozone Season Allowance Tracking System

Subpart GGGG [§ 97.360 - § 97.362] - Subpart GGGG—CAIR NOX Ozone Season Allowance Transfers

Subpart HHHH [§ 97.370 - § 97.375] - Subpart HHHH—Monitoring and Reporting

Subpart IIII [§ 97.380 - § 97.388] - Subpart IIII—CAIR NOX Ozone Season Opt-in Units

Subpart AAAAA [§ 97.401 - § 97.435] - Subpart AAAAA—CSAPR NOX Annual Trading Program

Subpart BBBBB [§ 97.501 - § 97.535] - Subpart BBBBB—CSAPR NOX Ozone Season Group 1 Trading Program

Subpart CCCCC [§ 97.601 - § 97.635] - Subpart CCCCC—CSAPR SO2 Group 1 Trading Program

Subpart DDDDD [§ 97.701 - § 97.735] - Subpart DDDDD—CSAPR SO2 Group 2 Trading Program

Subpart EEEEE [§ 97.801 - § 97.835] - Subpart EEEEE—CSAPR NOX Ozone Season Group 2 Trading Program

Subpart FFFFF [§ 97.901 - § 97.935] - Subpart FFFFF—Texas SO2 Trading Program

Subpart GGGGG [§ 97.1001 - § 97.1035] - Subpart GGGGG—CSAPR NOX Ozone Season Group 3 Trading Program