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
ReferenceApplies to Subpart CCCExplanation
63.1-63.5Yes.
63.6 (a)-(d)Yes
63.6(e)(1)(i)NoSee § 63.1259(c) for general duty requirement. Any cross-reference to § 63.6(e)(1)(i) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.1259(c).
63.6(e)(1)(ii)No
63.6(e)(1)(iii)Yes
63.6(e)(2)NoSection reserved.
63.6(e)(3)No
63.6(f)(1)No
63.6(f)(2)-(3)Yes
63.6(g)Yes
63.6(h)NoSubpart CCC does not contain an opacity or visible emission standard.
63.6 (i)-(j)Yes.
63.7Yes
63.8(a)-(c)Yes
63.8(d)(1)-(2)Yes
63.8(d)(3)Yes, except for last sentence
63.8(e)-(f)Yes
63.9(j)Yes
63.9(k)YesOnly as specified in § 63.9(j).
63.10(a)Yes
63.10(b)(1)Yes
63.10(b)(2)(i)No
63.10(b)(2)(ii)NoSee § 63.1265(a)(1) for recordkeeping of occurrence and duration of malfunctions. See § 63.1265(a)(4) for recordkeeping of actions taken during malfunction. Any cross-reference to § 63.10(b)(2)(ii) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.1265(a)(1).
63.10(b)(2)(iii)Yes
63.10(b)(2)(iv)-(b)(2)(v)No
63.10(b)(2)(vi)-(b)(2)(xiv)Yes
63.10(b)(3)Yes
63.10(c)(1)-(9)Yes
63.10(c)(10)NoSee § 63.1164(c) for reporting malfunctions. Any cross-reference to § 63.10(c)(10) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.1164(c).
63.10(c)(11)NoSee § 63.1164(c) for reporting malfunctions. Any cross-reference to § 63.10(c)(11) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.1164(c).
63.10(c)(12)-(c)(14)Yes
63.10(c)(15)No
63.10(d)(1)-(2)Yes.
63.10(d)(3)NoSubpart CCC does not contain an opacity or visible emission standard.
63.10(d)(4)Yes
63.10(d)(5)No
63.10(e)-(f)Yes.
63.11NoSubpart CCC does not require the use of flares.
63.12-63.15Yes

[64 FR 33218, June 22, 1999, as amended at 77 FR 58252, Sept. 19, 2012; 85 FR 73897, Nov. 19, 2020]