Table 6 to Subpart U of Part 63 - —Group 1 Batch Front-End Process Vents and Aggregate Batch Vent Streams—Monitoring, Recordkeeping, and Reporting Requirements

Table 6 to Subpart U of Part 63—Group 1 Batch Front-End Process Vents and Aggregate Batch Vent Streams—Monitoring, Recordkeeping, and Reporting Requirements

Cross Reference

Link to an amendment published at 89 FR 43264, May 16, 2024.

Control/recovery device	Parameter to be monitored	Recordkeeping and reporting requirements for monitored parameters
Thermal incineratorincinerators other than those used for vents in chloroprene service	Firebox temperaturea	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average firebox temperature measured during the performance test—NCS.c
		3. Record the batch cycle daily average firebox temperature as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average temperatures that are below the minimum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
Thermal oxidizers used for vents in chloroprene service	a. Combustion chamber temperature	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average firebox temperature measured during the performance test—NCS.c
		3. Record the 1-hour block average firebox temperature as specified in § 63.510(b)(5)(i).
		4. Report all 1-hour block average temperatures that are below the minimum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
	b. Flue gas flow rate	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average flue gas flow rate measured during the performance test—NCS.c
		3. Record the 1-hour block average flue gas flow rate as specified in § 63.510(b)(5)(ii).
		4. Report all 1-hour block average flow rates that are above the maximum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
Catalytic incinerator	Temperature upstream and downstream of the catalyst bed	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average upstream and downstream temperatures and the average temperature difference across the catalyst bed measured during the performance test—NCS.c
		3. Record the batch cycle daily average upstream temperature and temperature difference across catalyst bed as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average upstream temperatures that are below the minimum upstream value established in the NCS or operating permit—PR.de
		5. Reporting all batch cycle daily average temperature differences across the catalyst bed that are below the minimum difference established in the NCS or operating permit—PR.de
		6. Report all instances when monitoring data are not collected.
Boiler or process heater with a design heat input capacity less than 44 megawatts and where the batch front—end process vents or aggregate batch vent streams are “not” introduced with or used as the primary fuel	Firebox temperaturea	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average firebox temperature measured during the performance test—NCS.c
		3. Record the batch cycle daily average firebox temperature as specified in § 63.491(e)(2).d
		4. Report all batch cycle daily average temperatures that are below the minimum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
Flare (if meeting the requirements of § 63.487(a)(1)(i) or (b)(1)(i))	Presence of a flame at the pilot light	1. Hourly records of whether the monitor was continuously operating during light batch emission episodes selected for control and whether a flame was continuously present at the pilot light 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.c
		3. Record the times and durations of all periods during batch emission episodes when all flames at the pilot light of a flare are absent or the monitor is not operating.
		4. Report the times and durations of all periods during batch emission episodes selected for control when all flames at the pilot light of a flare are absent—PR.d
Flare (if meeting the requirements of § 63.487(a)(1)(iii) or (b)(1)(iii))	The parameters are specified in paragraphs (b) through (o) of § 63.108 and § 63.508	1. Records as specified in paragraph (m) of § 63.108 and § 63.508. 2. Report information as specified in in paragraph (l) of § 63.108 and § 63.508—PR.
Scrubber for halogenated batch front-end process vents or aggregate batch vent streams (Note: Controlled by a combustion device other than a flare)	a. pH of scrubber effluent, and	1. Continuous records as specified in § 63.491(e)(1).b 2. Record and report the average pH of the scrubber effluent measured during the performance test—NCS.c
		3. Record the batch cycle daily average pH of the scrubber effluent as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average pH values of the scrubber effluent that are below the minimum operating value established in the NCS or operating permit and all instances when insufficient monitoring data are collected—PR.de
	b. Scrubber liquid and gas flow rates (§ 63.489(b)(4)(ii))	1. Records as specified in § 63.491(e)(1).b 2. Record and report the scrubber liquid/gas ratio averaged over the full period of the performance test—NCS.c
		3. Record the batch cycle daily average scrubber liquid/gas ratio as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average scrubber liquid/gas ratios that are below the minimum value established in the NCS or operating permit and all instances when insufficient monitoring data are collected—PR.de
Absorberf	a. Exit temperature of the absorbing liquid, and	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average exit temperature of the absorbing liquid measured during the performance test—NCS.c
		3. Record the batch cycle daily average exit temperature of the absorbing liquid as specified in § 63.491(e)(2) for each batch cycle.
		4. Report all the batch cycle daily average exit temperatures of the absorbing liquid that are above the maximum operating temperature established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
	b. Exit specific gravity of the absorbing liquid	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average exit specific gravity measured during the performance test—NCS.
		3. Record the batch cycle daily average exit specific gravity as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average exit specific gravity values that are below the minimum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
Condenserf	Exit (product side) temperature	1. Continuous records as specified in § 63.491(e)(1)b
		2. Record and report the average exit temperature measured during the performance test—NCS.
		3. Record the batch cycle daily average exit temperature as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average exit temperatures that are above the maximum operating value established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de
Carbon adsorberf	a. Total regeneration steam flow or nitrogen flow, or pressure gauge or absolute) during carbon bed regeneration cycle(s), and	1. Record of total regeneration steam flow or nitrogen flow, or pressure for each carbon bed regeneration cycle.
		2. Record and report the total regeneration steam flow or nitrogen flow, or pressure during each carbon bed regeneration cycle during the performance test—NCS.c
		3. Report all carbon bed regeneration cycles when the total regeneration steam flow or nitrogen flow, or pressure is above the maximum value established in the NCS or operating permit—PR.de
	b. Temperature of the carbon bed after regeneration and within 15 minutes of completing any cooling cycle(s)	1. Record the temperature of the carbon bed after each regeneration and within 15 minutes of completing any cooling cycle(s).
		2. Record and report the temperature of the carbon bed after each regeneration and within 15 minutes of completing any cooling cycle(s) measured during the performance test—NCS.c
		3. Report all carbon bed regeneration cycles when the temperature of the carbon bed after regeneration, or within 15 minutes of completing any cooling cycle(s), is above the maximum value established in the NCS or operating permit—PR.de
	Outlet HAP or TOC concentration	For each nonregenerative adsorber and regenerative adsorber that is regenerated offsite subject to the requirements in § 63.489(b)(10), the owner or operator must record each outlet HAP or TOC concentration measured according to §§ 63.489(b)(10)(i) and (b)(10)(ii).
	Adsorbent replacement	1. For each nonregenerative adsorber and regenerative adsorber that is regenerated offsite subject to the requirements in § 63.489(b)(10), the owner or operator must record date and time the adsorbent was last replaced.
	Breakthrough	For each nonregenerative adsorber and regenerative adsorber that is regenerated offsite subject to the requirements in § 63.489(b)(10), the owner or operator must: 1. Record breakthrough limit and bed life established according to § 63.489(b)(10)(i). 2. Report the date of each instance when breakthrough, as defined in § 63.101, is detected between the first and second adsorber and the adsorber is not replaced according to § 63.489(b)(10)(iii)(A)—PR.g
Sorbent injection	a. Sorbent injection rate	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average sorbent injection rate measured during the performance test—NCS.c
		3. Record the batch cycle daily average sorbent injection rate as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average sorbent injection rates that are below the minimum value established in the NCS or operating permit and all instances when insufficient monitoring data are collected—PR.de
	b. Carrier gas flow rate	1. Continuous records as specified in § 63.491(e)(1).b
		2. Record and report the average carrier gas flow rate measured during the performance test—NCS.c
		3. Record the batch cycle daily average carrier gas flow rate as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average carrier gas flow rates that are below the minimum value established in the NCS or operating permit and all instances when insufficient monitoring data are collected—PR.de
All control devices	a. Diversion to the atmosphere from the control device or	1. Hourly records of whether the flow indicator was operating during batch emission episodes selected for control and whether a diversion was detected at any time during the hour, as specified in § 63.491(e)(3).
		2. Record and report the times of all periods during batch emission episodes selected for control when emissions are diverted through a bypass line, or the flow indicator is not operating—PR.d 3. For each affected source as described in § 63.480, beginning no later than the compliance dates specified in § 63.481(n), record and report the start date, start time, duration in hours, estimate of the volume of gas in standard cubic feet, the concentration of organic HAP in the gas in parts per million by volume and the resulting mass emissions of organic HAP in pounds that bypass a control device. For periods when the flow indicator is not operating, report the start date, start time, and duration in hours—PR.d
	b. Monthly inspections of sealed valves	1. Records that monthly inspections were performed as specified in § 63.491(e)(4)(i). 2. Record and report all monthly inspections that show that valves are in the diverting position or that a seal has been broken—PR.d 3. For each affected source as described in § 63.480, beginning no later than the compliance dates specified in § 63.481(n), record and report the start date, start time, duration in hours, estimate of the volume of gas in standard cubic feet, the concentration of organic HAP in the gas in parts per million by volume and the resulting mass emissions of organic HAP in pounds that bypass a control device. For periods when the flow indicator is not operating, report the start date, start time, and duration in hours—PR.d
Absorber, condenser, and carbon adsorber (as an alternative to the above)	Concentration level or reading indicated by an organic monitoring device at the outlet of the recovery device	1. Continuous records as specified in § 63.491(e)(1).b 2. Record and report and average batch vent concentration level or reading measured during the performance test—NCS.
		3. Record the batch cycle daily average concentration level or reading as specified in § 63.491(e)(2).
		4. Report all batch cycle daily average concentration levels or readings that are above the maximum values established in the NCS or operating permit and all instances when monitoring data are not collected—PR.de

^a Monitor may be installed in the firebox or in the duct work immediately downstream of the firebox before any substantial heat exchange is encountered.

^b “Continuous records” is defined in § 63.111.

^c NCS = Notification of Compliance Status described in § 63.506(e)(5).

^d PR = Periodic Reports described in § 63.506(e)(6).

^e The periodic reports shall include the duration of periods when monitoring data are not collected as specified in § 63.506(e)(6)(iii)(C).

^f Alternatively, these devices may comply with the organic monitoring device provisions listed at the end of this table.

[66 89 FR 3692843264, July May 16, 20012024]