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Title 40

Displaying title 40, up to date as of 7/16/2026. Title 40 was last amended 7/16/2026.
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Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter CAir Programs50 – 99
Part 97Federal NOX Budget Trading Program, CAIR NOX and SO2 Trading Programs, CSAPR NOX and SO2 Trading Programs, and Texas SO2 Trading Program97.1 – 97.1035
Subpart ANOX Budget Trading Program General Provisions97.1 – 97.7
Subpart BNOX Authorized Account Representative for NOX Budget Sources97.10 – 97.14
Subpart CPermits97.20 – 97.24
Subpart DCompliance Certification97.30 – 97.31
Subpart ENOX Allowance Allocations97.40 – 97.43
Subpart FNOX Allowance Tracking System97.50 – 97.57
Subpart GNOX Allowance Transfers97.60 – 97.62
Subpart HMonitoring and Reporting97.70 – 97.76
Subpart IIndividual Unit Opt-ins97.80 – 97.88
Subpart JAppeal Procedures97.90
Subpart AACAIR NOX Annual Trading Program General Provisions97.101 – 97.108
Subpart BBCAIR Designated Representative for CAIR NOX Sources97.110 – 97.115
Subpart CCPermits97.120 – 97.124
Subpart DD [Reserved]
Subpart EECAIR NOX Allowance Allocations97.140 – 97.144
Subpart FFCAIR NOX Allowance Tracking System97.150 – 97.157
Subpart GGCAIR NOX Allowance Transfers97.160 – 97.162
Subpart HHMonitoring and Reporting97.170 – 97.175
Subpart IICAIR NOX Opt-In Units97.180 – 97.188
Subpart AAACAIR SO2 Trading Program General Provisions97.201 – 97.208
Subpart BBBCAIR Designated Representative for CAIR SO2 Sources97.210 – 97.215
Subpart CCCPermits97.220 – 97.224
Subparts DDD-EEE [Reserved]
Subpart FFFCAIR SO2 Allowance Tracking System97.250 – 97.257
Subpart GGGCAIR SO2 Allowance Transfers97.260 – 97.262
Subpart HHHMonitoring and Reporting97.270 – 97.275
Subpart IIICAIR SO2 Opt-in Units97.280 – 97.288
Subpart AAAACAIR NOX Ozone Season Trading Program General Provisions97.301 – 97.308
Subpart BBBBCAIR Designated Representative for CAIR NOX Ozone Season Sources97.310 – 97.315
Subpart CCCCPermits97.320 – 97.324
Subpart DDDD [Reserved]
Subpart EEEECAIR NOX Ozone Season Allowance Allocations97.340 – 97.343
Subpart FFFFCAIR NOX Ozone Season Allowance Tracking System97.350 – 97.357
Subpart GGGGCAIR NOX Ozone Season Allowance Transfers97.360 – 97.362
Subpart HHHHMonitoring and Reporting97.370 – 97.375
Subpart IIIICAIR NOX Ozone Season Opt-in Units97.380 – 97.388
Subpart AAAAACSAPR NOX Annual Trading Program97.401 – 97.435
Subpart BBBBBCSAPR NOX Ozone Season Group 1 Trading Program97.501 – 97.535
Subpart CCCCCCSAPR SO2 Group 1 Trading Program97.601 – 97.635
Subpart DDDDDCSAPR SO2 Group 2 Trading Program97.701 – 97.735
Subpart EEEEECSAPR NOX Ozone Season Group 2 Trading Program97.801 – 97.835
Subpart FFFFFTexas SO2 Trading Program97.901 – 97.935
Subpart GGGGGCSAPR NOX Ozone Season Group 3 Trading Program97.1001 – 97.1035