StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 2

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

As stated in § 63.11423(a)(2), you must comply with the opacity standards in the following table:

For . . .Any gases emitted must not exceed . . .
1. Each new or existing facility other than a lead reclamation facility0 percent opacity (measured according to EPA Method 9 of appendix A to 40 CFR part 60 and rounded to the nearest whole percentage or measured according to EPA Method 22 of appendix A to 40 CFR part 60).
2. Each new or existing lead reclamation facility5 percent opacity (measured according to EPA Method 9 and rounded to the nearest whole percentage).

[88 FR 11596, Feb. 23, 2023]