StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
TypeSemiannual TF limit (lb/ton) [for given number of potlines]
2 lines3 lines | 4 lines | 5 lines | 6 lines | 7 lines | 8 lines
CWPB11.7 | 1.6 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4
CWPB22.9 | 2.8 | 2.7 | 2.7 | 2.6 | 2.6 | 2.6
CWPB32.3 | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.1
SWPB1.4 | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2
VSS22.6 | 2.5 | 2.5 | 2.4 | 2.4 | 2.4 | 2.4

[80 FR 62424, Oct. 15, 2015