{"data":{"id":"us/40-cfr-table-1-to-subpart-n-of-part-63","jurisdiction":"us","citation":"40 CFR Table 1 to Subpart N of Part 63","heading":"Table 1 to Subpart N of Part 63—General Provisions Applicability to Subpart N","body":"General provisions reference Applies to subpart N Comment\n63.1(a)(1) Yes Additional terms defined in § 63.341; when overlap between subparts A and N occurs, subpart N takes precedence.\n63.1(a)(2) Yes\n63.1(a)(3) Yes\n63.1(a)(4) Yes Subpart N clarifies the applicability of each paragraph in subpart A to sources subject to subpart N.\n63.1(a)(5) No [Reserved]\n63.1(a)(6) Yes\n63.1(a)(7)-(9) No [Reserved]\n63.1(a)(10) Yes\n63.1(a)(11) Yes § 63.347(a) of subpart N also allows report submissions via fax and on electronic media.\n63.1(a)(12) Yes\n63.1(b)(1) No § 63.340 of subpart N specifies applicability.\n63.1(b)(2) No [Reserved]\n63.1(b)(3) No This provision in subpart A is being deleted. Also, all affected area and major sources are subject to subpart N; there are no exemptions.\n63.1(c)(1) Yes Subpart N clarifies the applicability of each paragraph in subpart A to sources subject to subpart N.\n63.1(c)(2) Yes § 63.340(e) of Subpart N exempts area sources from the obligation to obtain Title V operating permits.\n63.1(c)(3)-(4) No [Reserved]\n63.1(c)(5) No Subpart N clarifies that an area source that becomes a major source is subject to the requirements for major sources.\n63.1(c)(6) Yes\n63.1(e) Yes\n63.2 Yes Additional terms defined in § 63.341; when overlap between subparts A and N occurs, subpart N takes precedence.\n63.3 Yes Other units used in subpart N are defined in that subpart.\n63.4(a)(1)-(2) Yes\n63.4(a)(3)-(5) No [Reserved]\n63.4(b)-(c) Yes\n63.5(a) Yes Except replace the term “source” and “stationary source” in § 63.5(a) (1) and (2) of subpart A with “affected sources.”\n63.5(b)(1) Yes\n63.5(b)(2) No [Reserved]\n63.5(b)(3) Yes Applies only to major affected sources.\n63.5(b)(4) No Subpart N (§ 63.345) specifies requirements for the notification of construction or reconstruction for affected sources that are not major.\n63.5(b)(5) No [Reserved]\n63.5(b)(6) Yes\n63.5(c) No [Reserved]\n63.5(d)(1)(i) No § 63.345(c)(5) of subpart N specifies when the application or notification shall be submitted.\n63.5(d)(1)(ii) Yes Applies to major affected sources that are new or reconstructed.\n63.5(d)(1)(iii) Yes Except information should be submitted with the Notification of Compliance Status required by § 63.347(e) of subpart N.\n63.5(d)(2) Yes Applies to major affected sources that are new or reconstructed except: (1) replace “source” in § 63.5(d)(2) of subpart A with “affected source”; and (2) actual control efficiencies are submitted with the Notification of Compliance Status required by § 63.347(e).\n63.5(d)(3)-(4) Yes Applies to major affected sources that are new or reconstructed.\n63.5(e) Yes Applies to major affected sources that are new or reconstructed.\n63.5(f)(1) Yes Except replace “source” in § 63.5(f)(1) of subpart A with “affected source.”\n63.5(f)(2) No New or reconstructed affected sources shall submit the request for approval of construction or reconstruction under § 63.5(f) of subpart A by the deadline specified in § 63.345(c)(5) of subpart N.\n63.6(a) Yes\n63.6(b)(1)-(2) Yes Except replace “source” in § 63.6(b)(1)-(2) of part A with “affected source.”\n63.6(b)(3)-(4) Yes\n63.6(b)(5) Yes Except replace “source” in § 63.6(b)(5) of subpart A with “affected source.”\n63.6(b)(7) No Provisions for new area sources that become major sources are contained in § 63.343(a)(4) of subpart N.\n63.6(c)(1)-(2) Yes Except replace “source” in § 63.6(c)(1)-(2) of subpart A with “affected source.”\n63.6(c)(3)-(4) No [Reserved]\n63.6(c)(5) No Compliance provisions for existing area sources that become major sources are contained in § 63.343(a)(3) of subpart N.\n63.6(d) No [Reserved]\n63.6(e)(1)-(3) No § 63.342(f) of subpart N contains work practice standards (operation and maintenance requirements) that override these provisions.\n63.6(f)(1) No § 63.342(b) of subpart N specifies when the standards apply.\n63.6(f)(2)(i)-(ii) Yes\n63.6(f)(2)(iii) No § 63.344(b) of subpart N specifies instances in which previous performance test results for existing sources are acceptable.\n63.6(f)(2)(iv) Yes\n63.6(f)(2)(v) Yes\n63.6(f)(3) Yes\n63.6(g) Yes\n63.6(h)(1) No SSM Exception\n63.6(h)(2) No Subpart N does not contain any opacity or visible emission standards.\n63.6(i)(1) Yes\n63.6(i)(2) Yes Except replace “source” in § 63.6(i)(2)(i) and (ii) of subpart A with “affected source.”\n63.6(i)(3) Yes\n63.6(i)(4)(i) No § 63.343(a)(6) of subpart N specifies the procedures for obtaining an extension of compliance and the date by which such requests must be submitted.\n63.6(i)(4)(ii) Yes\n63.6(i)(5) Yes\n63.6(i)(6)(i) Yes This paragraph only references “paragraph (i)(4) of this section” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.6(i)(6)(ii) Yes\n63.6(i)(7) Yes\n63.6(i)(8) Yes This paragraph only references “paragraphs (i)(4) through (i)(6) of this section” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.6(i)(9) Yes This paragraph only references “paragraphs (i)(4) through (i)(6) of this section” and “paragraphs (i)(4) and (i)(5) of this section” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.6(i)(10)(i)-(iv) Yes\n63.6(i)(10)(v)(A) Yes This paragraph only references “paragraph (i)(4)” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.6(i)(10)(v)(B) Yes\n63.6(i)(11) Yes\n63.6(i)(12)(i) Yes This paragraph only references “paragraph (i)(4)(i) or (i)(5) of this section” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.6(i)(12)(ii)-(iii) Yes\n63.6(i)(13) Yes\n63.6(i)(14) Yes\n63.6(i)(15) No [Reserved]\n63.6(i)(16) Yes\n63.6(j) Yes\n63.7(a)(1) Yes\n63.7(a)(2)(i)-(viii) No [Reserved]\n63.7(a)(2)(ix) Yes\n63.7(a)(3) Yes\n63.7(a)(4) Yes\n63.7(b)(1) No § 63.347(d) of subpart N requires notification prior to the performance test. § 63.344(a) of subpart N requires submission of a site-specific test plan upon request.\n63.7(b)(2) Yes\n63.7(c) No § 63.344(a) of subpart N specifies what the test plan should contain, but does not require test plan approval or performance audit samples.\n63.7(d) Yes Except replace “source” in the first sentence of § 63.7(d) of subpart A with “affected source.”\n63.7(e)(1) No See § 63.344(a). Any cross reference to § 63.7(e)(1) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.344(a).\n63.7(e)(2)-(4) Yes Subpart N also contains test methods specific to affected sources covered by that subpart.\n63.7(f) Yes § 63.344(c)(2) of subpart N identifies CARB Method 425 as acceptable under certain conditions.\n63.7(g)(1) No Subpart N identifies the items to be reported in the compliance test [§ 63.344(a)] and the timeframe for submitting the results [§ 63.347(f)].\n63.7(g)(2) No [Reserved]\n63.7(g)(3) Yes\n63.7(h)(1)-(2) Yes\n63.7(h)(3)(i) Yes This paragraph only references “§ 63.6(i)” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension.\n63.7(h)(3)(ii)-(iii) Yes\n63.7(h)(4)-(5) Yes\n63.8(a)(1) Yes\n63.8(a)(2) No Work practice standards are contained in § 63.342(f) of subpart N.\n63.8(a)(3) No [Reserved]\n63.8(a)(4) No\n63.8(b)(1) Yes\n63.8(b)(2) No § 63.344(d) of subpart N specifies the monitoring location when there are multiple sources.\n63.9(b)(3) No [Reserved]\n63.8(c)(1)(i) No Subpart N requires proper maintenance of monitoring devices expected to be used by sources subject to subpart N.\n63.8(c)(1)(ii) No § 63.342(f)(3)(iv) of subpart N specifies reporting when the O\u0026M plan is not followed.\n63.8(c)(1)(iii) No § 63.343(f)(2) identifies the criteria for whether O\u0026M procedures are acceptable.\n63.8(c)(2)-(3) No § 63.344(d)(2) requires appropriate use of monitoring devices.\n63.8(c)(4)-(7) No\n63.8(d) No Maintenance of monitoring devices is required by §§ 63.342(f) and 63.344(d)(2) of subpart N.\n63.8(e) No There are no performance evaluation procedures for the monitoring devices expected to be used to comply with subpart N.\n63.8(f)(1) Yes\n63.8(f)(2) No Instances in which the Administrator may approve alternatives to the monitoring methods and procedures of subpart N are contained in § 63.343(c)(8) of subpart N.\n63.8(f)(3) Yes\n63.8(f)(4) Yes\n63.8(f)(5) Yes\n63.8(f)(6) No Subpart N does not require the use of CEM's.\n63.8(g) No Monitoring data does not need to be reduced for reporting purposes because subpart N requires measurement once/day.\n63.9(a) Yes\n63.9(b)(1)(i)-(ii) No § 63.343(a)(3) of subpart N requires area sources to comply with major source provisions if an increase in HAP emissions causes them to become major sources.\n63.9(b)(1)(iii) No § 63.347(c)(2) of subpart N specifies initial notification requirements for new or reconstructed affected sources.\n63.9(b)(2) No § 63.347(c)(1) of subpart N specifies the information to be contained in the initial notification.\n63.9(b)(3) No § 63.347(c)(2) of subpart N specifies notification requirements for new or reconstructed sources that are not major affected sources.\n63.9(b)(4) No\n63.9(b)(5) No\n63.9(c) Yes This paragraph only references “§ 63.6(i)(4) through § 63.6(i)(6)” for compliance extension provisions. But, § 63.343(a)(6) of subpart N also contains provisions for requesting a compliance extension. Subpart N provides a different timeframe for submitting the request than § 63.6(i)(4).\n63.9(d) Yes This paragraph only references “the notification dates established in paragraph (g) of this section.” But, § 63.347 of subpart N also contains notification dates.\n63.9(e) No Notification of performance test is required by § 63.347(d) of subpart N.\n63.9(f) No\n63.9(g) No Subpart N does not require a performance evaluation or relative accuracy test for monitoring devices.\n63.9(h)(1)-(3) No § 63.347(e) of subpart N specifies information to be contained in the notification of compliance status and the timeframe for submitting this information.\n63.9(h)(4) No [Reserved]\n63.9(h)(5) No Similar language has been incorporated into § 63.347(e)(2)(iii) of subpart N.\n63.9(h)(6) Yes\n63.9(i) Yes\n63.9(j) Yes\n63.9(k) Yes Only as specified in § 63.9(j).\n63.10(a) Yes\n63.10(b)(1) Yes\n63.10(b)(2) No § 63.346(b) of subpart N specifies the records that must be maintained.\n63.10(b)(3) No Subpart N applies to major and area sources.\n63.10(c) No Applicable requirements of § 63.10(c) have been incorporated into § 63.346(b) of subpart N.\n63.10(d)(1) Yes\n63.10(d)(2) No § 63.347(f) of subpart N specifies the timeframe for reporting performance test results.\n63.10(d)(3) No Subpart N does not contain opacity or visible emissions standards.\n63.10(d)(4) Yes\n63.10(d)(5) No § 63.342(f)(3)(iv) and § 63.347(g)(3) of subpart N specify reporting associated with malfunctions.\n63.10(e) No § 63.347(g) and (h) of subpart N specify the frequency of periodic reports of monitoring data used to establish compliance. Applicable requirements of § 63.10(e) have been incorporated into § 63.347(g) and (h).\n63.10(f) Yes\n63.11 No Flares will not be used to comply with the emission limits.\n63.12-63.15 Yes","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart N—National Emission Standards for Chromium Emissions From Hard and Decorative Chromium Electroplating and Chromium Anodizing Tanks"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"c70d34063cd7fe8a4ba7a74735eb07fbb00b030ed2f02e94b639b205381090c1","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-63.348","next":"us/40-cfr-63.360"},"notice":"GroundRules: Original legal text. Not legal advice."}