Regulations last checked for updates: May 17, 2024

Title 40 - Protection of Environment last revised: May 15, 2024
Appendix - Table 3 to Subpart LL of Part 63—Potline PM Limits for Emission Averaging
Type Semiannual PM limit (lb/ton) [for given number of potlines]
2 lines 3 lines 4 lines 5 lines 6 lines 7 lines 8 lines
CWPB16.16.15.35.35.05.05.0
CWPB210.610.39.99.99.59.59.5
CWPB318.417.617.616.816.816.816.8
SWPB4.33.93.93.73.73.73.7
VSS22524.124.123.123.123.123.1
[80 FR 62425, Oct. 15, 2015]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.