Regulations last checked for updates: Oct 17, 2024

Title 40 - Protection of Environment last revised: Oct 15, 2024
Appendix Appendix to - Appendix to Subpart HH of Part 63—Tables

Table 1 to Subpart HH of Part 63—List of Hazardous Air Pollutants for Subpart HH

CAS Number a Chemical name
75070Acetaldehyde
71432Benzene (includes benzene in gasoline)
75150Carbon disulfide
463581Carbonyl sulfide
100414Ethyl benzene
107211Ethylene glycol
50000Formaldehyde
110543n-Hexane
91203Naphthalene
108883Toluene
5408412,2,4-Trimethylpentane
1330207Xylenes (isomers and mixture)
95476o-Xylene
108383m-Xylene
106423p-Xylene

a CAS numbers refer to the Chemical Abstracts Services registry number assigned to specific compounds, isomers, or mixtures of compounds.

Table 2 to Subpart HH of Part 63—Applicability of 40 CFR Part 63 General Provisions to Subpart HH

General provisions reference Applicable to subpart HH Explanation
§ 63.1(a)(1)Yes.
§ 63.1(a)(2)Yes.
§ 63.1(a)(3)Yes.
§ 63.1(a)(4)Yes.
§ 63.1(a)(5)NoSection reserved.
§ 63.1(a)(6)Yes.
§ 63.1(a)(7) through (a)(9)NoSection reserved.
§ 63.1(a)(10)Yes.
§ 63.1(a)(11)Yes.
§ 63.1(a)(12)Yes.
§ 63.1(b)(1)NoSubpart HH specifies applicability.
§ 63.1(b)(2)NoSection reserved.
§ 63.1(b)(3)Yes.
§ 63.1(c)(1)NoSubpart HH specifies applicability.
§ 63.1(c)(2)YesSubpart HH exempts area sources from the requirement to obtain a Title V permit unless otherwise required by law as specified in § 63.760(h).
§ 63.1(c)(3) and (c)(4)NoSection reserved.
§ 63.1(c)(5)Yes.
§ 63.1(c)(6)Yes
§ 63.1(d)NoSection reserved.
§ 63.1(e)Yes.
§ 63.2YesExcept definition of major source is unique for this source category and there are additional definitions in subpart HH.
§ 63.3(a) through (c)Yes.
§ 63.4(a)(1) through (a)(2)Yes.
§ 63.4(a)(3) through (a)(5)NoSection reserved.
§ 63.4(b)Yes.
§ 63.4(c)Yes.
§ 63.5(a)(1)Yes.
§ 63.5(a)(2)Yes.
§ 63.5(b)(1)Yes.
§ 63.5(b)(2)NoSection reserved.
§ 63.5(b)(3)Yes.
§ 63.5(b)(4)Yes.
§ 63.5(b)(5)NoSection Reserved.
§ 63.5(b)(6)Yes.
§ 63.5(c)NoSection reserved.
§ 63.5(d)(1)Yes.
§ 63.5(d)(2)Yes.
§ 63.5(d)(3)Yes.
§ 63.5(d)(4)Yes.
§ 63.5(e)Yes.
§ 63.5(f)(1)Yes.
§ 63.5(f)(2)Yes.
§ 63.6(a)Yes.
§ 63.6(b)(1)Yes.
§ 63.6(b)(2)Yes.
§ 63.6(b)(3)Yes.
§ 63.6(b)(4)Yes.
§ 63.6(b)(5)Yes.
§ 63.6(b)(6)NoSection reserved.
§ 63.6(b)(7)Yes.
§ 63.6(c)(1)Yes.
§ 63.6(c)(2)Yes.
§ 63.6(c)(3) through (c)(4)NoSection reserved.
§ 63.6(c)(5)Yes.
§ 63.6(d)NoSection reserved.
§ 63.6(e)(1)(i)NoSee § 63.764(j) for general duty requirement.
§ 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)Yes.
§ 63.6(f)(3)Yes.
§ 63.6(g)Yes.
§ 63.6(h)(1)No.
§ 63.6(h)(2) through (h)(9)Yes.
§ 63.6(i)(1) through (i)(14)Yes.
§ 63.6(i)(15)NoSection reserved.
§ 63.6(i)(16)Yes.
§ 63.6(j)Yes.
§ 63.7(a)(1)Yes.
§ 63.7(a)(2)YesBut the performance test results must be submitted within 180 days after the compliance date.
§ 63.7(a)(3)Yes.
§ 63.7(a)(4)Yes.
§ 63.7(c)Yes.
§ 63.7(d)Yes.
§ 63.7(e)(1)No.
§ 63.7(e)(2)Yes.
§ 63.7(e)(3)Yes.
§ 63.7(e)(4)Yes.
§ 63.7(f)Yes.
§ 63.7(g)Yes.
§ 63.7(h)Yes.
§ 63.8(a)(1)Yes.
§ 63.8(a)(2)Yes.
§ 63.8(a)(3)NoSection reserved.
§ 63.8(a)(4)Yes.
§ 63.8(b)(1)Yes.
§ 63.8(b)(2)Yes.
§ 63.8(b)(3)Yes.
§ 63.8(c)(1)No.
§ 63.8(c)(1)(i)No.
§ 63.8(c)(1)(ii)Yes.
§ 63.8(c)(1)(iii)No.
§ 63.8(c)(2)Yes.
§ 63.8(c)(3)Yes.
§ 63.8(c)(4)Yes.
§ 63.8(c)(4)(i)NoSubpart HH does not require continuous opacity monitors.
§ 63.8(c)(4)(ii)Yes.
§ 63.8(c)(5) through (c)(8)Yes.
§ 63.8(d)(1)Yes.
§ 63.8(d)(2)Yes.
§ 63.8(d)(3)YesExcept for last sentence, which refers to an SSM plan. SSM plans are not required.
§ 63.8(e)YesSubpart HH does not specifically require continuous emissions monitor performance evaluation, however, the Administrator can request that one be conducted.
§ 63.8(f)(1) through (f)(5)Yes.
§ 63.8(f)(6)Yes.
§ 63.8(g)NoSubpart HH specifies continuous monitoring system data reduction requirements.
§ 63.9(a)Yes.
§ 63.9(b)(1)Yes.
§ 63.9(b)(2)YesExisting sources are given 1 year (rather than 120 days) to submit this notification. Major and area sources that meet § 63.764(e) do not have to submit initial notifications.
§ 63.9(b)(3)NoSection reserved.
§ 63.9(b)(4)Yes.
§ 63.9(b)(5)Yes.
§ 63.9(c)Yes.
§ 63.9(d)Yes.
§ 63.9(e)Yes.
§ 63.9(f)Yes.
§ 63.9(g)Yes.
§ 63.9(h)(1) through (h)(3)YesArea sources located outside UA plus offset and UC boundaries are not required to submit notifications of compliance status.
§ 63.9(h)(4)NoSection reserved.
§ 63.9(h)(5) through (h)(6)Yes.
§ 63.9(i)Yes.
§ 63.9(j)Yes.
§ 63.9(k)YesOnly as specified in § 63.9(j).
§ 63.10(a)Yes.
§ 63.10(b)(1)Yes§ 63.774(b)(1) requires sources to maintain the most recent 12 months of data on-site and allows offsite storage for the remaining 4 years of data.
§ 63.10(b)(2)Yes.
§ 63.10(b)(2)(i)No.
§ 63.10(b)(2)(ii)NoSee § 63.774(g) for recordkeeping of (1) occurrence and duration and (2) actions taken during malfunctions.
§ 63.10(b)(2)(iii)Yes.
§ 63.10(b)(2)(iv) through (b)(2)(v)No.
§ 63.10(b)(2)(vi) through (b)(2)(xiv)Yes.
§ 63.10(b)(3)Yes§ 63.774(b)(1) requires sources to maintain the most recent 12 months of data on-site and allows offsite storage for the remaining 4 years of data.
§ 63.10(c)(1)Yes.
§ 63.10(c)(2) through (c)(4)NoSections reserved.
§ 63.10(c)(5) through (c)(8)Yes.
§ 63.10(c)(9)NoSection reserved.
§ 63.10(c)(10) through (11)NoSee § 63.774(g) for recordkeeping of malfunctions.
§ 63.10(c)(12) through (14)Yes.
§ 63.10(c)(15)No.
§ 63.10(d)(1)Yes.
§ 63.10(d)(2)YesArea sources located outside UA plus offset and UC boundaries do not have to submit performance test reports.
§ 63.10(d)(3)Yes.
§ 63.10(d)(4)Yes.
§ 63.10(d)(5)NoSee § 63.775(b)(6) or (c)(6) for reporting of malfunctions.
§ 63.10(e)(1)YesArea sources located outside UA plus offset and UC boundaries are not required to submit reports.
§ 63.10(e)(2)YesArea sources located outside UA plus offset and UC boundaries are not required to submit reports.
§ 63.10(e)(3)(i)YesSubpart HH requires major sources to submit Periodic Reports semi-annually. Area sources are required to submit Periodic Reports annually. Area sources located outside UA plus offset and UC boundaries are not required to submit reports.
§ 63.10(e)(3)(i)(A)Yes.
§ 63.10(e)(3)(i)(B)Yes.
§ 63.10(e)(3)(i)(C)No.
§ 63.10(e)(3)(i)(D)YesSection reserved.
§ 63.10(e)(3)(ii) through (viii)Yes.
§ 63.10(e)(4)Yes.
§ 63.10(f)Yes.
§ 63.11(a) and (b)Yes.
§ 63.11(c), (d), and (e)Yes.
§ 63.12(a) through (c)Yes.
§ 63.13(a) through (c)Yes.
§ 63.14(a) through (q)Yes.
§ 63.15(a) and (b)Yes.
§ 63.16Yes.
[64 FR 32628, June 17, 1999, as amended at 66 FR 34554, June 29, 2001; 71 FR 20457, Apr. 20, 2006; 72 FR 40, Jan. 3, 2007; 73 FR 78214, Dec. 22, 2008; 77 FR 49581, Aug. 16, 2012; 85 FR 73894, Nov. 19, 2020]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.