Statutes, codes, and regulations
Code of Federal Regulations
Title 40 - PROTECTION OF ENVIRONMENTChapter I - ENVIRONMENTAL PROTECTION AGENCYSubchapter C - AIR PROGRAMSPart 65 - CONSOLIDATED FEDERAL AIR RULE
Subpart D - PROCESS VENTS
Appendix Table 1 to Subpart D of Part 65 - Concentration for Group Determination

40 C.F.R. § 65.68-65 app Table 1 to Subpart D of Part 65

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Current through September 30, 2024
Appendix Table 1 to Subpart D of Part 65 - Concentration for Group Determination

Referencing subpart Concentration1
Subpart III of Part 60NA.
Subpart NNN of Part 60300 ppmv of TOC.
Subpart RRR of Part 60300 ppmv of TOC.
Subpart G of Part 6350 ppmv of HAP2.

1 The 50 ppm HAP concentration cutoff only applies to 40 CFR part 63, subpart G sources. Process vents subject to only 40 CFR part 60, subparts RRR or NNN are eligible for the 300 ppm TOC cutoff. There is no concentration cutoff for subpart III sources. The process vent provisions of subpart DDD are not consolidated under this subpart.

2 For process vents subject to subpart G of 40 CFR part 63, the owner or operator may measure HAP or TOC concentration with regard to the low concentration exemption provisions of this part.

40 C.F.R. 65.68-65 app Table 1 to Subpart D of Part 65