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Regulations last checked for updates: Aug 21, 2026
Title 40 - Protection of Environment last revised: Aug 21, 2026
All Titles
Title 40
Chapter I
Part 63
Subpart LL
Appendix -
View all text of [None - None]
Appendix -
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
CWPB1
6.1
6.1
5.3
5.3
5.0
5.0
5.0
CWPB2
10.6
10.3
9.9
9.9
9.5
9.5
9.5
CWPB3
18.4
17.6
17.6
16.8
16.8
16.8
16.8
SWPB
4.3
3.9
3.9
3.7
3.7
3.7
3.7
VSS2
25
24.1
24.1
23.1
23.1
23.1
23.1
[80 FR 62425, Oct. 15, 2015]
authority:
42 U.S.C. 7401
source:
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
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