40 C.F.R. Table 1 to Subpart W of Part 63
General Provisions Applicability to Subpart W
Cite as 40 C.F.R. Table 1 to Subpart W of Part 63 (2026)
Reference Applies to subpart W Comment BLR WSR WSR equipment leak standard, and BLR equipment leak standard (40 CFR part 63, subpart H) § 63.1(a)(1) Yes Yes Yes Additional terms defined in § 63.522. § 63.1(a)(2) Yes Yes Yes § 63.1(a)(3) Yes Yes Yes § 63.1(a)(4) Yes Yes Yes Subpart W specifies applicability of each paragraph in subpart A to subpart W. § 63.1(a)(5) N/A N/A N/A Reserved. § 63.1(a)(6) Yes Yes Yes § 63.1(a)(7) Yes Yes Yes § 63.1(a)(8) No No No Discusses State programs. § 63.1(a)(9) N/A N/A N/A Reserved. § 63.1(a)(10) Yes Yes Yes § 63.1(a)(11) Yes Yes Yes § 63.1(a)(12)-(14) Yes Yes Yes § 63.1(b)(1) No No No § 63.521 of subpart W specifies applicability. § 63.1(b)(2) Yes Yes Yes § 63.1(b)(3) Yes Yes Yes § 63.1(c)(1) Yes Yes Yes Subpart W specifies applicability of each paragraph in subpart A to sources subject to subpart W. § 63.1(c)(2) No No No Area sources are not subject to subpart W. § 63.1(c)(3) N/A N/A N/A Reserved. § 63.1(c)(4) Yes Yes Yes § 63.1(c)(5) Yes Yes No Subpart H specifies applicable notification requirements. § 63.1(c)(6) Yes Yes Yes § 63.1(d) N/A N/A N/A Reserved. § 63.1(e) Yes Yes Yes § 63.2 Yes Yes Yes Additional terms are defined in § 63.522 of subpart W; when overlap between subparts A and W occurs, subpart W takes precedence. § 63.3 Yes Yes No Other units used in subpart W are defined in that subpart; units of measure are spelled out for subpart H. § 63.4(a)(1)-(3) Yes Yes Yes § 63.4(a)(4) N/A N/A N/A Reserved. § 63.4(a)(5) Yes Yes Yes § 63.4(b) Yes Yes Yes § 63.4(c) Yes Yes Yes § 63.5(a) Yes Yes Yes Except replace the terms “source” and “stationary source” in § 63.5(a)(1) of subpart A with “affected source”. § 63.5(b)(1) Yes Yes Yes § 63.5(b)(2) N/A N/A N/A Reserved. § 63.5(b)(3) Yes Yes Yes § 63.5(b)(4) Yes Yes Yes § 63.5(b)(5) Yes Yes Yes § 63.5(b)(6) Yes Yes Yes § 63.5(c) N/A N/A N/A Reserved. § 63.5(d)(1)(i) Yes Yes Yes § 63.5(d)(1)(ii) Yes Yes Yes § 63.5(d)(1)(iii) Yes Yes Yes § 63.5(d)(2) Yes Yes Yes § 63.5(d)(3)-(4) Yes Yes Yes § 63.5(e) Yes Yes Yes § 63.5(f)(1) Yes Yes Yes Except replace “source” in § 63.5(f)(1) of subpart A with “affected source”. § 63.5(f)(2) Yes Yes Yes § 63.6(a) Yes Yes Yes § 63.6(b)(1)-(2) No No No Subpart W specifies compliance dates. § 63.6(b)(3)-(4) Yes Yes Yes § 63.6(b)(5) Yes No Subpart H includes notification requirements. § 63.6(b)(6) N/A N/A N/A Reserved. § 63.6(b)(7) No Yes No Sources subject to subpart H must comply according to the schedule in § 63.520 of subpart W for new sources subject to subpart H. § 63.6(c)(1)-(2) Yes Yes Yes Except replace “source” in § 63.6(c)(1)-(2) of subpart A with “affected source”. § 63.6(c)(3)-(4) N/A N/A N/A Reserved. § 63.6(c)(5) Yes Yes Yes § 63.6(d) N/A N/A N/A Reserved. § 63.6(e) Yes Yes Yes § 63.6(e)(1)(i) Reserved. § 63.6(e)(1)(ii) See Comment Yes, before July 15, 2027. No, beginning on and after July 15, 2027. § 63.6(e)(1)(iii) Yes Yes Yes 63.6(e)(2) N/A N/A N/A Reserved. 63.6(e)(3) See Comment Yes, before July 15, 2027. No, beginning on and after July 15, 2027. § 63.6(f)(1) Yes Yes Yes § 63.6(f)(2)(i)-(ii) Yes Yes Yes § 63.6(f)(2)(iii) Yes Yes Yes § 63.6(f)(2)(iv) Yes Yes Yes § 63.6(f)(3) Yes Yes Yes § 63.6(g) Yes Yes Yes Affected sources have the opportunity to demonstrate other alternatives to the Administrator. § 63.6(h) No No No Subpart W does not contain any opacity or visible emissions standards. § 63.6(i)(1) Yes Yes Yes § 63.6(i)(2) Yes Yes Yes Except replace “source” in § 63.6(2) (i) and (ii) of subpart A with “affected source”. § 63.6(i)(3) Yes Yes Yes § 63.6(i)(4)(i) Yes Yes Yes § 63.6(i)(4)(ii) Yes Yes Yes § 63.6(i)(5)-(14) Yes Yes Yes § 63.6(i)(15) N/A N/A N/A Reserved. § 63.6(i)(16) Yes Yes Yes § 63.6(j) Yes Yes Yes § 63.7(a)(1) Yes Yes No Subpart H specifies required testing and compliance procedures. § 63.7(a)(2)(i)-(vi) Yes Yes No Subpart H specifies that test results must be submitted in the Notification of Compliance Status due 150 days after the compliance date. § 63.7(a)(2)(vii)-(viii) N/A N/A N/A Reserved. § 63.7(a)(2)(ix) Yes Yes Yes § 63.7(a)(3) Yes Yes Yes § 63.7(a)(4) Yes Yes Yes § 63.7(b)(1) Yes Yes Yes § 63.7(b)(2) Yes Yes Yes § 63.7(c) No No No § 63.7(d) Yes Yes Yes Except replace “source” in § 63.7(d) of subpart A with “affected source”. § 63.7(e)(1) Yes, before July 15, 2027. No, beginning on and after July 15, 2027. See § 63.525(l). Subpart W also contains test methods specific to BLR and WSR sources. § 63.7(e)(2) Yes Yes Yes § 63.7(e)(3) Yes Yes No Subpart H specifies test methods and procedures. § 63.7(f) Yes Yes No Subpart H specifies applicable methods and provides alternatives. § 63.7(g)(1) Yes Yes No Subpart H specifies performance test reporting. Additionally, this subpart specifies how and when the performance test results are reported for BLR and WSR. § 63.7(g)(2) N/A N/A N/A Reserved. § 63.7(g)(3) Yes Yes Yes § 63.7(h)(1)-(2) Yes Yes Yes § 63.7(h)(3)(i) Yes Yes Yes § 63.7(h)(3)(ii)-(iii) Yes Yes Yes § 63.7(h)(4)-(5) Yes Yes Yes § 63.8(a)(1) Yes Yes Yes § 63.8(a)(2) Yes Yes Yes § 63.8(a)(3) N/A N/A N/A Reserved. § 63.8(a)(4) Yes Yes Yes § 63.8(b)(1) Yes Yes Yes § 63.8(b)(2) Yes Yes No Subpart H specifies locations to conduct monitoring. § 63.8(b)(3) Yes Yes Yes § 63.8(c)(1)(i) Yes, before July 15, 2027. No, beginning on and after July 15, 2027. § 63.8(c)(1)(ii) Yes Yes Yes § 63.8(c)(1)(iii) Yes, before July 15, 2027. No, beginning on and after July 15, 2027. § 63.8(c)(2)-(3) Yes Yes Yes § 63.8(c)(4)-(8) No No No Subpart W specifies monitoring frequencies. § 63.8(d) No No No § 63.8(e) No No No § 63.8(f)(1) Yes Yes Yes § 63.8(f)(2) Yes Yes Yes § 63.8(f)(3) Yes Yes Yes § 63.8(f)(4) Yes Yes Yes § 63.8(f)(5) Yes Yes Yes § 63.8(f)(6) Yes Yes No § 63.8(g) Yes Yes Yes § 63.9(a) Yes Yes Yes § 63.9(b)(1)(i)-(ii) Yes Yes Yes § 63.9(b)(1)(iii) Yes Yes Yes § 63.9(b)(2) Yes Yes Yes § 63.9(b)(3) Yes Yes Yes § 63.9(b)(4) Yes Yes Yes § 63.9(b)(5) Yes Yes Yes § 63.9(c) Yes Yes Yes § 63.9(d) Yes Yes Yes § 63.9(e) No No No § 63.9(f) No No No § 63.9(g) No No No § 63.9(h)(1)-(3) Yes Yes No Separate Notification of Compliance Status requirements are specified for subpart H. § 63.9(h)(4) N/A N/A N/A Reserved. § 63.9(h)(5)-(6) Yes Yes No Subpart H specifies Notification of Compliance Status requirements. § 63.9(i) Yes Yes Yes § 63.9(j) Yes Yes Yes § 63.9(k) Yes Yes Yes § 63.10(a) Yes Yes Yes § 63.10(b)(1) Yes Yes Yes § 63.10(b)(2) No No No Subparts H and W specify recordkeeping requirements. § 63.10(b)(3) Yes Yes Yes § 63.10(c)(1)-(6) No No No § 63.10(c)(7)-(8) Yes Yes Yes § 63.10(c)(9)-(15) No No No § 63.10(d)(1) Yes Yes No Subpart H specifies performance test reporting requirements. § 63.10(d)(2) No No No This subpart and Subpart H specify performance test reporting requirements. § 63.10(d)(3) No No No § 63.10(d)(4) Yes Yes Yes § 63.10(d)(5) Yes, before July 15, 2027. No, beginning on and after July 15, 2027. § 63.10(e)(1)-(2) No No No § 63.10(e)(3) Yes Yes No Except that on and after July 15, 2027, the reports shall be submitted according to and in the format required by § 63.528(a). § 63.10(e)(4) No No No § 63.10(f) Yes Yes Yes § 63.11-63.15 Yes Yes Yes [60 FR 12676, Mar. 8, 1995, as amended at 85 FR 73891, Nov. 19, 2020; 89 FR 43274, May 16, 2024] Editorial Note: At 89 FR 43274, May 16, 2024, table 1 to subpart W was amended in part by revising entry “§ 63.6(e)(1)(i)”. However, the amendment could not be incorporated due to an inaccurate amendatory instruction. [60 FR 12676, Mar. 8, 1995, as amended at 89 FR 43274, May 16, 2024]
- Cross-references to the CFR
- 63.163.1063.11-63.1563.263.363.463.563.52063.52163.52263.522.63.52563.52863.663.763.863.9