40 CFR Appendix to Subpart CC of Part 63, Tables

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Appendix to Subpart CC of Part 63 - Tables

Table 1 - Hazardous Air Pollutants

Chemical name CAS No. a
Benzene 71432
Biphenyl 92524
Butadiene (1,3) 106990
Carbon disulfide 75150
Carbonyl sulfide 463581
Cresol (mixed isomers b) 1319773
Cresol (m-) 108394
Cresol (o-) 95487
Cresol (p-) 106445
Cumene 98828
Dibromoethane (1,2) (ethylene dibromide) 106934
Dichloroethane (1,2) 107062
Diethanolamine 111422
Ethylbenzene 100414
Ethylene glycol 107211
Hexane 110543
Methanol 67561
Methyl isobutyl ketone (hexone) 108101
Methyl tert butyl ether 1634044
Naphthalene 91203
Phenol 108952
Toluene 108883
Trimethylpentane (2,2,4) 540841
Xylene (mixed isomers b) 1330207
xylene (m-) 108383
xylene (o-) 95476
xylene (p-) 106423

a CAS number = Chemical Abstract Service registry number assigned to specific compounds, isomers, or mixtures of compounds.

b Isomer means all structural arrangements for the same number of atoms of each element and does not mean salts, esters, or derivatives.

Table 2 - Leak Definitions for Pumps and Valves

Standard a Phase Leak definition (parts per million)
§ 63.163 (pumps) I 10,000
II 5,000
III 2,000
§ 63.168 (valves) I 10,000
II 1,000
III 1,000

a Subpart H of this part.

Table 3 - Equipment Leak Recordkeeping and Reporting Requirements for Sources Complying With § 63.648 of Subpart CC by Compliance With Subpart H of this Part a

Reference (section of subpart H of this part) Description Comment
63.181(a) Recordkeeping system requirements Except for §§ 63.181(b)(2)(iii) and 63.181(b)(9).
63.181(b) Records required for process unit equipment Except for §§ 63.181(b)(2)(iii) and 63.181(b)(9).
63.181(c) Visual inspection documentation Except for §§ 63.181(b)(2)(iii) and 63.181(b)(9).
63.181(d) Leak detection record requirements Except for § 63.181(d)(8) .
63.181(e) Compliance requirements for pressure tests for batch product process equipment trains This subsection does not apply to subpart CC.
63.181(f) Compressor compliance test records.
63.181(g) Closed-vent systems and control device record requirements.
63.181(h) Process unit quality improvement program records.
63.181(i) Heavy liquid service determination record.
63.181(j) Equipment identification record.
63.181(k) Enclosed-vented process unit emission limitation record requirements.
63.182(a) Reports.
63.182(b) Initial notification report requirements. Not required.
63.182(c) Notification of compliance status report Except in § 63.182(c) ; change “within 90 days of the compliance dates” to “within 150 days of the compliance dates”; except in §§ 63.182 (c)(2) and (c)(4).
63.182(d) Periodic report Except for §§ 63.182 (d)(2)(vii), (d)(2)(viii), and (d)(3).

a This table does not include all the requirements delineated under the referenced sections. See referenced sections for specific requirements.

Table 4 - Gasoline Distribution Emission Point Recordkeeping and Reporting Requirements a

Reference (section of
subpart R)
Description Comment
63.428(b) or (k) Records of test results for each gasoline cargo tank loaded at the facility
63.428(c) Continuous monitoring data recordkeeping requirements
63.428(g)(1) Semiannual report loading rack information Required to be submitted with the Periodic Report required under 40 CFR part 63 , subpart CC.
63.428(h)(1) through (h)(3) Excess emissions report loading rack information Required to be submitted with the Periodic Report required under 40 CFR part 63 , subpart CC.

a This table does not include all the requirements delineated under the referenced sections. See referenced sections for specific requirements.

Table 5 - Marine Vessel Loading Operations Recordkeeping and Reporting Requirements a

Reference (section of subpart Y) Description Comment
63.562(e)(2) Operation and maintenance plan for control equipment and monitoring equipment
63.565(a) Performance test/site test plan The information required under this paragraph is to be submitted with the Notification of Compliance Status report required under 40 CFR part 63 , subpart CC.
63.565(b) Performance test data requirements
63.567(a) General Provisions (subpart A) applicability
63.567(c) Request for extension of compliance
63.567(d) Flare recordkeeping requirements
63.567(e) Summary report and excess emissions and monitoring system performance report requirements The information required under this paragraph is to be submitted with the Periodic Report required under 40 CFR part 63 , subpart CC.
63.567(f) Vapor collection system engineering report
63.567(g) Vent system valve bypass recordkeeping requirements
63.567(h) Marine vessel vapor-tightness documentation
63.567(i) Documentation file maintenance
63.567(j) Emission estimation reporting and recordkeeping procedures

a This table does not include all the requirements delineated under the referenced sections. See referenced sections for specific requirements.

Table 6 - General Provisions Applicability to Subpart CC a

Reference Applies to subpart CC Comment
63.1(a)(1) Yes
63.1(a)(2) Yes
63.1(a)(3) Yes
63.1(a)(4) Yes
63.1(a)(5) No Reserved.
63.1(a)(6) Yes Except the correct mail drop (MD) number is C404-04.
63.1(a)(7)-63.1(a)(9) No Reserved.
63.1(a)(10) Yes
63.1(a)(11) Yes
63.1(a)(12) Yes
63.1(b)(1) Yes
63.1(b)(2) No Reserved.
63.1(b)(3) No
63.1(c)(1) Yes
63.1(c)(2) No Area sources are not subject to subpart CC.
63.1(c)(3)-63.1(c)(4) No Reserved.
63.1(c)(5) Yes Except that sources are not required to submit notifications overridden by this table.
63.1(d) No Reserved.
63.1(e) No No CAA section 112(j) standard applies to the affected sources under subpart CC.
63.2 Yes § 63.64 1 of subpart CC specifies that if the same term is defined in subparts A and CC, it shall have the meaning given in subpart CC.
63.3 Yes
63.4(a)(1)-63.4(a)(2) Yes
63.4(a)(3)-63.4(a)(5) No Reserved.
63.4(b) Yes
63.4(c) Yes
63.5(a) Yes
63.5(b)(1) Yes
63.5(b)(2) No Reserved.
63.5(b)(3) Yes
63.5(b)(4) Yes Except the cross-reference to § 63.9(b) is changed to § 63.9(b)(4) and (5) . Subpart CC overrides § 63.9 (b)(2).
63.5(b)(5) No Reserved.
63.5(b)(6) Yes
63.5(c) No Reserved.
63.5(d)(1)(i) Yes Except that the application shall be submitted as soon as practicable before startup, but no later than 90 days after the promulgation date of subpart CC if the construction or reconstruction had commenced and initial startup had not occurred before the promulgation of subpart CC.
63.5(d)(1)(ii) Yes Except that for affected sources subject to this subpart, emission estimates specified in § 63.5(d)(1)(ii)(H) are not required, and § 63.5(d)(1)(ii)(G) and (I) are Reserved and do not apply.
63.5(d)(1)(iii) No Subpart CC § 63.655(f) specifies Notification of Compliance Status report requirements.
63.5(d)(2) Yes
63.5(d)(3) Yes
63.5(d)(4) Yes
63.5(e) Yes
63.5(f) Yes Except that the cross-reference in § 63.5(f)(2) to § 63.9(b)(2) does not apply.
63.6(a) Yes
63.6(b)(1)-63.6(b)(5) No Subpart CC specifies compliance dates and notifications for sources subject to subpart CC.
63.6(b)(6) No Reserved.
63.6(b)(7) Yes
63.6(c)(1)-63.6(c)(2) No § 63.64 0 of subpart CC specifies the compliance date.
63.6(c)(3)-63.6(c)(4) No Reserved.
63.6(c)(5) Yes
63.6(d) No Reserved.
63.6(e)(1)(i) and (ii) No See § 63.642(n) for general duty requirement.
63.6(e)(1)(iii) Yes.
63.6(e)(2) No Reserved.
63.6(e)(3)(i) No.
63.6(e)(3)(ii) No Reserved.
63.6(e)(3)(iii)-63.6(e)(3)(ix) No.
63.6(f)(1) No.
63.6(f)(2) Yes Except the phrase “as specified in § 63.7(c) ” in § 63.6(f)(2)(iii)(D) does not apply because this subpart does not require a site-specific test plan.
63.6(f)(3) Yes Except the cross-references to § 63.6(f)(1) and (e)(1)(i) are changed to § 63.642(n) .
63.6(g) Yes
63.6(h)(1) No.
63.6(h)(2) Yes Except § 63.6(h)(2)(ii) , which is reserved.
63.6(h)(3) No Reserved.
63.6(h)(4) No Notification of visible emission test not required in subpart CC.
63.6(h)(5) No Visible emission requirements and timing is specified in § 63.645(i ) of subpart CC.
63.6(h)(6) Yes
63.6(h)(7) No Subpart CC does not require opacity standards.
63.6(h)(8) Yes
63.6(h)(9) No Subpart CC does not require opacity standards.
63.6(i) Yes Except for § 63.6(i)(15) , which is reserved.
63.6(j) Yes
63.7(a)(1) Yes
63.7(a)(2) Yes Except test results must be submitted in the Notification of Compliance Status report due 150 days after compliance date, as specified in § 63.655(f ) of subpart CC.
63.7(a)(3) Yes
63.7(a)(4) Yes
63.7(b) Yes Except this subpart requires notification of performance test at least 30 days (rather than 60 days) prior to the performance test.
63.7(c) No Subpart CC does not require a site-specific test plan.
63.7(d) Yes
63.7(e)(1) No See § 63.642(d)(3) .
63.7(e)(2)-63.7(e)(4) Yes
63.7(f) No Subpart CC specifies applicable methods and provides alternatives without additional notification or approval.
63.7(g) No Performance test reporting specified in § 63.655(f) .
63.7(h)(1) Yes
63.7(h)(2) Yes
63.7(h)(3) Yes Yes, except site-specific test plans shall not be required, and where § 63.7(g)(3) specifies submittal by the date the site-specific test plan is due, the date shall be 90 days prior to the Notification of Compliance Status report in § 63.655(f) .
63.7(h)(4)(i) Yes
63.7(h)(4)(ii) No Site-specific test plans are not required in subpart CC.
63.7(h)(4)(iii) and (iv) Yes
63.7(h)(5) Yes
63.8(a)(1) and (2) Yes.
63.8(a)(3) No Reserved.
63.8(a)(4) Yes Except that for a flare complying with § 63.670 , the cross-reference to § 63.11 in this paragraph does not include § 63.11(b) .
63.8(b) Yes
63.8(c)(1) Yes Except § 63.8(c)(1)(i) and (iii) .
63.8(c)(1)(i) No See § 63.642(n) .
63.8(c)(1)(iii) No.
63.8(c)(2) Yes
63.8(c)(3) Yes Except that verification of operational status shall, at a minimum, include completion of the manufacturer's written specifications or recommendations for installation, operation, and calibration of the system or other written procedures that provide adequate assurance that the equipment would monitor accurately.
63.8(c)(4) Yes Except that for sources other than flares, this subpart specifies the monitoring cycle frequency specified in § 63.8(c)(4)(ii) is “once every hour” rather than “for each successive 15-minute period.”
63.8(c)(5)-63.8(c)(8) No This subpart specifies continuous monitoring system requirements.
63.8(d) No This subpart specifies quality control procedures for continuous monitoring systems.
63.8(e) Yes.
63.8(f)(1) Yes
63.8(f)(2) Yes
63.8(f)(3) Yes
63.8(f)(4)(i) No Timeframe for submitting request is specified in § 63.655(h)(5)(i ) of subpart CC.
63.8(f)(4)(ii) Yes
63.8(f)(4)(iii) No Timeframe for submitting request is specified in § 63.655(h)(5)(i ) of subpart CC.
63.8(f)(5) Yes
63.8(f)(6) No Subpart CC does not require continuous emission monitors.
63.8(g) No This subpart specifies data reduction procedures in §§ 63.655(i)(3) and 63.671(d).
63.9(a) Yes Except that the owner or operator does not need to send a copy of each notification submitted to the Regional Office of the EPA as stated in § 63.9(a)(4)(ii) .
63.9(b)(1) Yes Except the notification of compliance status report specified in § 63.655(f ) of subpart CC may also serve as the initial compliance notification required in § 63.9(b)(1)(iii) .
63.9(b)(2) No A separate Initial Notification report is not required under subpart CC.
63.9(b)(3) No Reserved.
63.9(b)(4) Yes Except for subparagraphs § 63.9(b)(4)(ii) through (iv), which are reserved.
63.9(b)(5) Yes
63.9(c) Yes
63.9(d) Yes
63.9(e) No Subpart CC requires notification of performance test at least 30 days (rather than 60 days) prior to the performance test and does not require a site-specific test plan.
63.9(f) No Subpart CC does not require advanced notification of visible emissions test.
63.9(g) No
63.9(h) No Subpart CC § 63.655(f) specifies Notification of Compliance Status report requirements.
63.9(i) Yes
63.9(j) No
63.10(a) Yes
63.10(b)(1) No § 63.655(i ) of subpart CC specifies record retention requirements.
63.10(b)(2)(i) No.
63.10(b)(2)(ii) No § 63.655(i) specifies the records that must be kept.
63.10(b)(2)(iii) No
63.10(b)(2)(iv) No.
63.10(b)(2)(v) No.
63.10(b)(2)(vi) Yes
63.10(b)(2)(vii) No § 63.655(i) specifies records to be kept for parameters measured with continuous monitors.
63.10(b)(2)(viii) Yes
63.10(b)(2)(ix) Yes
63.10(b)(2)(x) Yes
63.10(b)(2)(xi) No
63.10(b)(2)(xii) Yes
63.10(b)(2)(xiii) No
63.10(b)(2)(xiv) Yes
63.10(b)(3) No
63.10(c)(1)-63.10(c)(6) No
63.10(c)(7) and 63.10(c)(8) Yes
63.10(c)(9) No Reserved.
63.10(c)(10)-63.10(c)(11) No § 63.655(i) specifies the records that must be kept.
63.10(c)(12)-63.10(c)(15) No.
63.10(d)(1) Yes
63.10(d)(2) No Although § 63.655(f) specifies performance test reporting, EPA may approve other timeframes for submittal of performance test data.
63.10(d)(3) No Results of visible emissions test are included in Compliance Status Report as specified in § 63.655(f) .
63.10(d)(4) Yes
63.10(d)(5) No § 63.655(g) specifies the reporting requirements.
63.10(e) No
63.10(f) Yes
63.11 Yes Except that flares complying with § 63.670 are not subject to the requirements of § 63.11(b) .
63.12-63.16 Yes.

a Wherever subpart A of this part specifies “postmark” dates, submittals may be sent by methods other than the U.S. Mail (e.g., by fax or courier). Submittals shall be sent by the specified dates, but a postmark is not required.

Table 7 - Fraction Measured (FM), Fraction Emitted (FE), and Fraction Removed (FR) for HAP Compounds in Wastewater Streams

Chemical name CAS No. a Fm Fe Fr
Benzene 71432 1.00 0.80 0.99
Biphenyl 92524 0.86 0.45 0.99
Butadiene (1,3) 106990 1.00 0.98 0.99
Carbon disulfide 75150 1.00 0.92 0.99
Cumene 98828 1.00 0.88 0.99
Dichloroethane (1,2-) (Ethylene dichloride) 107062 1.00 0.64 0.99
Ethylbenzene 100414 1.00 0.83 0.99
Hexane 110543 1.00 1.00 0.99
Methanol 67561 0.85 0.17 0.31
Methyl isobutyl ketone (hexone) 108101 0.98 0.53 0.99
Methyl tert butyl ether 1634044 1.00 0.57 0.99
Naphthalene 91203 0.99 0.51 0.99
Trimethylpentane (2,2,4) 540841 1.00 1.00 0.99
xylene (m-) 108383 1.00 0.82 0.99
xylene (o-) 95476 1.00 0.79 0.99
xylene (p-) 106423 1.00 0.82 0.99

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

Table 8 - Valve Monitoring Frequency for Phase III

Performance level Valve monitoring frequency
Leaking valves a (%)
≥4 Monthly or QIP. b
<4 Quarterly.
<3 Semiannual.
<2 Annual.

a Percent leaking valves is calculated as a rolling average of two consecutive monitoring periods.

b QIP = Quality improvement program. Specified in § 63.175 of subpart H of this part.

Table 9 - Valve Monitoring Frequency for Alternative

Performance level Valve monitoring frequency under § 63.649 alternative
Leaking valves a (%)
≥5 Monthly or QIP. b
<5 Quarterly.
<4 Semiannual.
<3 Annual.

a Percent leaking valves is calculated as a rolling average of two consecutive monitoring periods.

b QIP = Quality improvement program. Specified in § 63.175 of subpart H of this part.

Table 10 - Miscellaneous Process Vents - Monitoring, Recordkeeping and Reporting Requirements for Complying With 98 Weight-Percent Reduction of Total Organic HAP Emissions or a Limit of 20 Parts Per Million by Volume

Control device Parameters to be monitored a Recordkeeping and reporting requirements for monitored parameters
Thermal incinerator Firebox temperature b (63.644(a)(1)(i)) 1. Continuous records c.
2. Record and report the firebox temperature averaged over the full period of the performance test - NCS d.
3. Record the daily average firebox temperature for each operating day e.
4. Report all daily average temperatures that are outside the range established in the NCS or operating permit and all operating days when insufficient monitoring data are collected f - PR g.
Catalytic incinerator Temperature upstream and downstream of the catalyst bed (63.644(a)(1)(ii)) 1. Continuous records c.
2. Record and report the upstream and downstream temperatures and the temperature difference across the catalyst bed averaged over the full period of the performance test - NCS d.
3. Record the daily average upstream temperature and temperature difference across the catalyst bed for each operating day e.
4. Report all daily average upstream temperatures that are outside the range established in the NCS or operating permit - PR g.
5. Report all daily average temperature differences across the catalyst bed that are outside the range established in the NCS or operating permit - PR g.
6. Report all operating days when insufficient monitoring data are collected f.
Boiler or process heater with a design heat capacity less than 44 megawatts where the vent stream is not introduced into the flame zone h i Firebox temperature b (63.644(a)(4)) 1. Continuous records c.
2. Record and report the firebox temperature averaged over the full period of the performance test - NCS d.
3. Record the daily average firebox temperature for each operating day e.
4. Report all daily average firebox temperatures that are outside the range established in the NCS or operating permit and all operating days when insufficient monitoring data are collected f - PR g.
Flare (if meeting the requirements of §§ 63.643 and 63.644) Presence of a flame at the pilot light (63.644(a)(2)) 1. Hourly records of whether the monitor was continuously operating and whether a pilot flame was continuously present during each hour.
2. Record and report the presence of a flame at the pilot light over the full period of the compliance determination - NCS d.
3. Record the times and durations of all periods when all pilot flames for a flare are absent or the monitor is not operating.
4. Report the times and durations of all periods when all pilot flames for a flare are absent or the monitor is not operating.
Flare (if meeting the requirements of §§ 63.670 and 63.671) The parameters specified in § 63.670 1. Records as specified in § 63.655(i)(9) .
2. Report information as specified in § 63.655(g)(11) - PR. g
All control devices Presence of flow diverted to the atmosphere from the control device ( § 63.644(c)(1) ) or 1. Hourly records of whether the flow indicator was operating and whether flow was detected at any time during each hour.
Record and report the times and durations of all periods when the vent stream is diverted through a bypass line or the monitor is not operating - PR. g
Monthly inspections of sealed valves ( § 63.644(c)(2) ) 1. Records that monthly inspections were performed.
2. Record and report all monthly inspections that show the valves are not closed or the seal has been changed - PR. g

a Regulatory citations are listed in parentheses.

b Monitor may be installed in the firebox or in the ductwork immediately downstream of the firebox before any substantial heat exchange is encountered.

c “Continuous records” is defined in § 63.641.

d NCS = Notification of Compliance Status Report described in § 63.655.

e The daily average is the average of all recorded parameter values for the operating day. If all recorded values during an operating day are within the range established in the NCS or operating permit, a statement to this effect can be recorded instead of the daily average.

f When a period of excess emission is caused by insufficient monitoring data, as described in § 63.655(g)(6)(i)(C) or (D), the duration of the period when monitoring data were not collected shall be included in the Periodic Report.

g PR = Periodic Reports described in § 63.655(g).

h No monitoring is required for boilers and process heaters with a design heat capacity ≥44 megawatts or for boilers and process heaters where all vent streams are introduced into the flame zone. No recordkeeping or reporting associated with monitoring is required for such boilers and process heaters.

i Process vents that are routed to refinery fuel gas systems are not regulated under this subpart provided that on and after January 30, 2019, any flares receiving gas from that fuel gas system are in compliance with § 63.670. No monitoring, recordkeeping, or reporting is required for boilers and process heaters that combust refinery fuel gas.

Table 11 - Compliance Dates and Requirements

If the construction/
reconstruction date
is . . .
Then the owner or operator must comply with . . . And the owner or operator must achieve compliance . . . Except as provided in . . .
(1) After June 30, 2014 (i) Requirements for new sources in §§ 63.643(a) and (b) ; 63.644, 63.645, and 63.647; 63.648(a) through (i) and (j)(1) and (2); 63.649 through 63.651; and 63.654 through 63.656 Upon initial startup § 63.640(k) , (l) and (m).
(ii) Requirements for new sources in §§ 63.642(n) , 63.643(c), 63.648(j)(3), (6) and (7); and 63.657 through 63.660 Upon initial startup or February 1, 2016, whichever is later § 63.640(k) , (l) and (m).
(2) After September 4, 2007 but on or before June 30, 2014 (i) Requirements for new sources in §§ 63.643(a) and (b) ; 63.644, 63.645, and 63.647; 63.648(a) through (i) and (j)(1) and (2); and 63.649 through 63.651, 63.655 and 63.656 Upon initial startup § 63.640(k) , (l) and (m).
(ii) Requirements for new sources in § 63.654 Upon initial startup or October 28, 2009, whichever is later § 63.640(k) , (l) and (m).
(iii) Requirements for new sources in either § 63.646 or § 63.660 or, if applicable, § 63.640(n) Upon initial startup, but you must transition to comply with only the requirements in § 63.660 or, if applicable, § 63.640(n) on or before April 29, 2016 §§ 63.640(k) , (l) and (m) and 63.660(d).
(iv) Requirements for existing sources in § 63.643(c) On or before August 1, 2017 §§ 63.640(k) , (l) and (m) and 63.643(d).
(v) Requirements for existing sources in § 63.658 On or before January 30, 2018 § 63.640(k) , (l) and (m).
(vi) Requirements for existing sources in § 63.648 (j)(3), (6) and (7) and § 63.657 On or before January 30, 2019 § 63.640(k) , (l) and (m).
(vii) Requirements in § 63.642 (n) Upon initial startup or February 1, 2016, whichever is later
(3) After July 14, 1994 but on or before September 4, 2007 (i) Requirements for new sources in §§ 63.643(a) and (b) ; 63.644, 63.645, and 63.647; 63.648(a) through (i) and (j)(1) and (2); and 63.649 through 63.651, 63.655 and 63.656 Upon initial startup or August 18, 1995, whichever is later § 63.640(k) , (l) and (m).
(ii) Requirements for existing sources in § 63.654 On or before October 29, 2012 § 63.640(k) , (l) and (m).
(iii) Requirements for new sources in either § 63.646 or § 63.660 or, if applicable, § 63.640(n) Upon initial startup, but you must transition to comply with only the requirements in § 63.660 or, if applicable, § 63.640(n) on or before April 29, 2016 §§ 63.640(k) , (l) and (m) and 63.660(d).
(iv) Requirements for existing sources in § 63.643(c) On or before August 1, 2017 §§ 63.640(k) , (l) and (m) and 63.643(d).
(v) Requirements for existing sources in § 63.658 On or before January 30, 2018 § 63.640(k) , (l) and (m).
(vi) Requirements for existing sources in §§ 63.648(j)(3) , (6) and (7) and 63.657 On or before January 30, 2019 § 63.640(k) , (l) and (m).
(vii) Requirements in § 63.642(n) Upon initial startup or February 1, 2016, whichever is later
(4) On or before July 14, 1994 (i) Requirements for existing sources in §§ 63.648(a) through (i) and (j)(1) and (2); and 63.649, 63.655 and 63.656 (A) On or before August 18, 1998 (1) § 63.640(k) , (l) and (m). (2) § 63.6(c)(5) or unless an extension has been granted by the Administrator as provided in § 63.6(i) .
(ii) Either the requirements for existing sources in §§ 63.643(a) and (b) ; 63.644, 63.645, 63.647, 63.650 and 63.651; and item (4)(v) of this table
OR
The requirements in §§ 63.652 and 63.653
(A) On or before August 18, 1998 (1) § 63.640(k) , (l) and (m). (2) § 63.6(c)(5) or unless an extension has been granted by the Administrator as provided in § 63.6(i) .
(iii) Requirements for existing sources in either § 63.646 or § 63.660 or, if applicable, § 63.640(n) On or before August 18, 1998, but you must transition to comply with only the requirements in § 63.660 or, if applicable, § 63.640(n) on or before April 29, 2016 §§ 63.640(k) , (l) and (m) and 63.660(d).
(iv) Requirements for existing sources in § 63.654 On or before October 29, 2012 § 63.640(k) , (l) and (m).
(v) Requirements for existing sources in § 63.643(c) On or before August 1, 2017 §§ 63.640(k) , (l) and (m) and 63.643(d).
(vi) Requirements for existing sources in § 63.658 On or before January 30, 2018 § 63.640(k) , (l) and (m).
(vii) Requirements for existing sources in §§ 63.648(j)(3) , (6) and (7) and 63.657 On or before January 30, 2019 § 63.640(k) , (l) and (m).
(viii) Requirements in § 63.642 (n) Upon initial startup or February 1, 2016, whichever is later

Table 12 - Individual Component Properties

Component Molecular
formula
MWi
(pounds per pound-mole)
CMNi
(mole per mole)
NHVi
(British
thermal units
per standard
cubic foot)
LFLi
(volume %)
Acetylene C2H2 26.04 2 1,404 2.5
Benzene C6H6 78.11 6 3,591 1.3
1,2-Butadiene C4H6 54.09 4 2,794 2.0
1,3-Butadiene C4H6 54.09 4 2,690 2.0
iso-Butane C4H10 58.12 4 2,957 1.8
n-Butane C4H10 58.12 4 2,968 1.8
cis-Butene C4H8 56.11 4 2,830 1.6
iso-Butene C4H8 56.11 4 2,928 1.8
trans-Butene C4H8 56.11 4 2,826 1.7
Carbon Dioxide CO2 44.01 1 0
Carbon Monoxide CO 28.01 1 316 12.5
Cyclopropane C3H6 42.08 3 2,185 2.4
Ethane C2H6 30.07 2 1,595 3.0
Ethylene C2H4 28.05 2 1,477 2.7
Hydrogen H2 2.02 0 1,212 a 4.0
Hydrogen Sulfide H2S 34.08 0 587 4.0
Methane CH4 16.04 1 896 5.0
Methyl-Acetylene C3H4 40.06 3 2,088 1.7
Nitrogen N2 28.01 0 0
Oxygen O2 32.00 0 0
Pentane (C5 ) C5H12 72.15 5 3,655 1.4
Propadiene C3H4 40.06 3 2,066 2.16
Propane C3H8 44.10 3 2,281 2.1
Propylene C3H6 42.08 3 2,150 2.4
Water H2O 18.02 0 0

a The theoretical net heating value for hydrogen is 274 Btu/scf, but for the purposes of the flare requirement in this subpart, a net heating value of 1,212 Btu/scf shall be used.

Table 13 - Calibration and Quality Control Requirements for CPMS

Parameter Minimum accuracy requirements Calibration requirements
Temperature ±1 percent over the normal range of temperature measured, expressed in degrees Celsius (C), or 2.8 degrees C, whichever is greater Conduct calibration checks at least annually; conduct calibration checks following any period of more than 24 hours throughout which the temperature exceeded the manufacturer's specified maximum rated temperature or install a new temperature sensor.
At least quarterly, inspect all components for integrity and all electrical connections for continuity, oxidation, and galvanic corrosion, unless the CPMS has a redundant temperature sensor.
Record the results of each calibration check and inspection.
Locate the temperature sensor in a position that provides a representative temperature; shield the temperature sensor system from electromagnetic interference and chemical contaminants.
Flow Rate for All Flows Other Than Flare Vent Gas ±5 percent over the normal range of flow measured or 1.9 liters per minute (0.5 gallons per minute), whichever is greater, for liquid flow Conduct a flow sensor calibration check at least biennially (every two years); conduct a calibration check following any period of more than 24 hours throughout which the flow rate exceeded the manufacturer's specified maximum rated flow rate or install a new flow sensor.
±5 percent over the normal range of flow measured or 280 liters per minute (10 cubic feet per minute), whichever is greater, for gas flow At least quarterly, inspect all components for leakage, unless the CPMS has a redundant flow sensor.
±5 percent over the normal range measured for mass flow Record the results of each calibration check and inspection.
Locate the flow sensor(s) and other necessary equipment (such as straightening vanes) in a position that provides representative flow; reduce swirling flow or abnormal velocity distributions due to upstream and downstream disturbances.
Flare Vent Gas Flow Rate ±20 percent of flow rate at velocities ranging from 0.03 to 0.3 meters per second (0.1 to 1 feet per second)
±5 percent of flow rate at velocities greater than 0.3 meters per second (1 feet per second)
Conduct a flow sensor calibration check at least biennially (every two years); conduct a calibration check following any period of more than 24 hours throughout which the flow rate exceeded the manufacturer's specified maximum rated flow rate or install a new flow sensor.
At least quarterly, inspect all components for leakage, unless the CPMS has a redundant flow sensor.
Record the results of each calibration check and inspection.
Locate the flow sensor(s) and other necessary equipment (such as straightening vanes) in a position that provides representative flow; reduce swirling flow or abnormal velocity distributions due to upstream and downstream disturbances.
Pressure ±5 percent over the normal operating range or 0.12 kilopascals (0.5 inches of water column), whichever is greater Review pressure sensor readings at least once a week for straightline (unchanging) pressure and perform corrective action to ensure proper pressure sensor operation if blockage is indicated.
Using an instrument recommended by the sensor's manufacturer, check gauge calibration and transducer calibration annually; conduct calibration checks following any period of more than 24 hours throughout which the pressure exceeded the manufacturer's specified maximum rated pressure or install a new pressure sensor.
At least quarterly, inspect all components for integrity, all electrical connections for continuity, and all mechanical connections for leakage, unless the CPMS has a redundant pressure sensor.
Record the results of each calibration check and inspection.
Locate the pressure sensor(s) in a position that provides a representative measurement of the pressure and minimizes or eliminates pulsating pressure, vibration, and internal and external corrosion.
Net Heating Value by Calorimeter ±2 percent of span Specify calibration requirements in your site specific CPMS monitoring plan. Calibration requirements should follow manufacturer's recommendations at a minimum.
Temperature control (heated and/or cooled as necessary) the sampling system to ensure proper year-round operation.
Where feasible, select a sampling location at least two equivalent diameters downstream from and 0.5 equivalent diameters upstream from the nearest disturbance. Select the sampling location at least two equivalent duct diameters from the nearest control device, point of pollutant generation, air in-leakages, or other point at which a change in the pollutant concentration or emission rate occurs.
Net Heating Value by Gas Chromatograph As specified in Performance Specification 9 of 40 CFR part 60 , appendix B Follow the procedure in Performance Specification 9 of 40 CFR part 60 , appendix B, except that a single daily mid-level calibration check can be used (rather than triplicate analysis), the multi-point calibration can be conducted quarterly (rather than monthly), and the sampling line temperature must be maintained at a minimum temperature of 60 °C (rather than 120 °C).
Hydrogen analyzer ±2 percent over the concentration measured or 0.1 volume percent, whichever is greater Specify calibration requirements in your site specific CPMS monitoring plan. Calibration requirements should follow manufacturer's recommendations at a minimum.
Select the sampling location at least two equivalent duct diameters from the nearest control device, point of pollutant generation, air in-leakages, or other point at which a change in the pollutant concentration occurs.
[ 60 FR 43260, Aug. 18, 1995, as amended at 61 FR 29881, 29882, June 12, 1996; 63 FR 44142, 44143, Aug. 18, 1998; 74 FR 55688, Oct. 28, 2009; 75 FR 37731, June 30, 2010; 80 FR 75269, Dec. 1, 2015; 81 FR 45241, July 13, 2016]

This is a list of United States Code sections, Statutes at Large, Public Laws, and Presidential Documents, which provide rulemaking authority for this CFR Part.

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United States Code

Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 63 after this date.

  • 2017-01-18; vol. 82 # 11 - Wednesday, January 18, 2017
    1. 82 FR 5401 - National Emission Standards for Hazardous Air Pollutants: Ferroalloys Production
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; notice of final action on reconsideration.
      This final action is effective on January 18, 2017. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of January 18, 2017.
      40 CFR Part 63

Title 40 published on 2015-08-22.

The following are only the Rules published in the Federal Register after the published date of Title 40.

For a complete list of all Rules, Proposed Rules, and Notices view the Rulemaking tab.

  • 2017-01-18; vol. 82 # 11 - Wednesday, January 18, 2017
    1. 82 FR 5401 - National Emission Standards for Hazardous Air Pollutants: Ferroalloys Production
      GPO FDSys: XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; notice of final action on reconsideration.
      This final action is effective on January 18, 2017. The incorporation by reference of certain publications listed in the rule is approved by the Director of the Federal Register as of January 18, 2017.
      40 CFR Part 63