StacksVerified U.S. regulatory reference

40 CFR §60.3066

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
  1. (a)Within 180 days after your final compliance date in table 1 of this subpart, you must meet the two limitations specified in paragraphs (a)(1) and (2) of this section.
    1. (1)The opacity limitation is 10 percent (6-minute average), except as described in paragraph (a)(2) of this section.
    2. (2)The opacity limitation is 35 percent (6-minute average) during the startup period that is within the first 30 minutes of operation.
  2. (b)The limitations in paragraph (a) of this section apply at all times.