---
kind: "range"
citation: "40 C.F.R. §§ 65.148–65.154"
title: "40"
from: "65.148"
to: "65.154"
count: 7
url: "https://uscodex.org/cfr/40/65.148..65.154"
---

# §65.148. Incinerators.

- (a) **Incinerator equipment and operating requirements.**
  - (1) Owners or operators using incinerators to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirement as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(A)](/cfr/40/60.562-1.md?p=a-1-i-A) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) Incinerators used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Incinerator performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b) and [paragraph (b)(2)](#b-2) of this section, the owner or operator shall conduct an initial performance test of any incinerator used to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required for equipment leaks.
  - (2) An owner or operator is not required to conduct a performance test for a hazardous waste incinerator for which the owner or operator has been issued a final permit under [40 CFR part 270](/cfr/40/part270.md) and complies with the requirements of [40 CFR part 264](/cfr/40/part264.md), [subpart O](/cfr/40/subpartO.md), or has certified compliance with the interim status requirements of [40 CFR part 265](/cfr/40/part265.md), subpart O. The owner or operator shall report as specified in [§ 65.165(f)](/cfr/40/65.165.md?p=f).
  - (3) Unless already permitted by the applicable title V permit, if an owner or operator elects to use an incinerator to replace an existing control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, an incinerator performance test shall be performed using the methods specified in [§ 65.157](/cfr/40/65.157.md) and within 180 days if required by [paragraph (b)(1)](#b-1) of this section. The performance test report shall be submitted to the Administrator within 60 days of completing the determination as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2). If an owner or operator elects to use an incinerator to replace an existing recovery device that is used on a Group 2A process vent, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b) and submit the notification specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a).
- (c) **Incinerator monitoring requirements.**
  - (1) Where an incinerator is used, a temperature monitoring device capable of providing a continuous record that meets the provisions specified in paragraph [(c)(1)(i)](#c-1-i) or [(ii)](#c-1-ii) of this section is required. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
    - (i) Where an incinerator other than a catalytic incinerator is used, a temperature monitoring device shall be installed in the fire box or in the ductwork immediately downstream of the fire box in a position before any substantial heat exchange occurs.
    - (ii) Where a catalytic incinerator is used, temperature monitoring devices shall be installed in the gas stream immediately before and after the catalyst bed.
  - (2) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the incinerator. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications of [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

# §65.149. Boilers and process heaters.

- (a) **Boiler and process heater equipment and operating requirements.**
  - (1) Owners or operators using boilers and process heaters to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirement as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(B)](/cfr/40/60.562-1.md?p=a-1-i-B) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) The vent stream shall be introduced into the flame zone of the boiler or process heater.
  - (3) Boilers and process heaters used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Boiler and process heater performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart, and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b) and [paragraph (b)(2)](#b-2) of this section, the owner or operator shall conduct an initial performance test of any boiler or process heater used to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required to demonstrate compliance for equipment leaks.
  - (2) An owner or operator is not required to conduct a performance test when any of the control devices specified in [paragraphs (b)(2)(i) through (iii)](#b-2-i..b-2-iii) of this section are used. The owner or operator shall report as specified in [§ 65.165(f)](/cfr/40/65.165.md?p=f).
    - (i) A boiler or process heater with a design heat input capacity of 44 megawatts (150 million British thermal units per hour) or greater.
    - (ii) A boiler or process heater into which the vent stream is introduced with the primary fuel or is used as the primary fuel.
    - (iii) A boiler or process heater burning hazardous waste for which the owner or operator meets either of the following requirements:
      - (A) The boiler or process heater has been issued a final permit under [40 CFR part 270](/cfr/40/part270.md) and complies with the requirements of [40 CFR part 266](/cfr/40/part266.md), [subpart H](/cfr/40/subpartH.md); or
      - (B) The boiler or process heater has certified compliance with the interim status requirements of [40 CFR part 266](/cfr/40/part266.md), subpart H.
  - (3) Unless already permitted by the applicable title V permit, if an owner or operator elects to use a boiler or process heater to replace an existing control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, a boiler or process heater performance test shall be performed using the methods specified in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md) within 180 days if required by [paragraph (b)(1)](#b-1) of this section. The performance test report shall be submitted to the Administrator within 60 days of completing the determination as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2). If an owner or operator elects to use a boiler or process heater to replace an existing recovery device that is used on a Group 2A process vent, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b) and submit the notification specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a).
- (c) **Boiler and process heater monitoring requirements.**
  - (1) Where a boiler or process heater of less than 44 megawatts (150 million British thermal units per hour) design heat input capacity is used and the regulated vent stream is not introduced as or with the primary fuel, a temperature monitoring device in the fire box capable of providing a continuous record is required. Any boiler or process heater in which all vent streams are introduced with primary fuel or are used as the primary fuel is exempt from monitoring. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) Where monitoring is required, the owner or operator shall establish a range for monitored parameters that indicates proper operation of the boiler or process heater. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications of [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

# §65.150. Absorbers used as control devices.

- (a) **Absorber equipment and operating requirements.**
  - (1) Owners or operators using absorbers to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirements as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(A)](/cfr/40/60.562-1.md?p=a-1-i-A) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) Absorbers used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Absorber performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b), the owner or operator shall conduct an initial performance test of any absorber used as a control device to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required to demonstrate compliance for equipment leaks.
  - (2) Unless already permitted by the applicable title V permit, if an owner or operator elects to use an absorber to replace an existing recovery or control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, either of the following provisions, as applicable, shall be followed:
    - (i) **Replace final recovery device.** If an owner or operator elects to replace the final recovery device on a process vent with an absorber used as a control device, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b).
    - (ii) **Replace control device.** If an owner or operator elects to replace a control device on a Group 1 process vent or a high-throughput transfer rack with an absorber used as a control device, the owner or operator shall perform a performance test using the methods specified in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md) within 180 days. The performance test report shall be submitted to the Administrator within 60 days of completing the test as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2).
- (c) **Absorber monitoring requirements.**
  - (1) Where an absorber is used as a control device, either an organic monitoring device capable of providing a continuous record or a scrubbing liquid temperature monitoring device and a specific gravity monitoring device, each capable of providing a continuous record, shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the absorber. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications of [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

# §65.151. Condensers used as control devices.

- (a) **Condenser equipment and operating requirements.**
  - (1) Owners or operators using condensers to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirements as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(A)](/cfr/40/60.562-1.md?p=a-1-i-A) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) Condensers used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Condenser performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b), the owner or operator shall conduct an initial performance test of any condenser used as a control device to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required to demonstrate compliance for equipment leaks.
  - (2) Unless already permitted by the applicable title V permit, if an owner or operator elects to use a condenser to replace an existing recovery or control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, either of the following provisions, as applicable, shall be followed:
    - (i) **Replace final recovery device.** If an owner or operator elects to replace the final recovery device on a process vent with a condenser used as a control device, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b).
    - (ii) **Replace control device.** If an owner or operator elects to replace a control device on a Group 1 process vent or a high-throughput transfer rack with a condenser used as a control device, the owner or operator shall perform a performance test using the methods specified in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md) within 180 days. The performance test report shall be submitted to the Administrator within 60 days of completing the test as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2).
- (c) **Condenser monitoring requirements.**
  - (1) Where a condenser is used as a control device, an organic monitoring device capable of providing a continuous record or a condenser exit (product side) temperature monitoring device capable of providing a continuous record shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the condenser. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications in [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

# §65.152. Carbon adsorbers used as control devices.

- (a) **Carbon adsorber equipment and operating requirements.**
  - (1) Owners or operators using carbon adsorbers to meet the 98 weight-percent emission reduction or 20 parts per million by volume outlet concentration requirements as specified in [§ 65.63(a)(2)](/cfr/40/65.63.md?p=a-2), or [40 CFR 60.562-1(a)(1)(i)(A)](/cfr/40/60.562-1.md?p=a-1-i-A) for process vents, or [§ 65.83(a)(1)](/cfr/40/65.83.md?p=a-1) for high-throughput transfer racks, as applicable, shall meet the requirements of this section.
  - (2) Carbon adsorbers used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Carbon adsorber performance test requirements.**
  - (1) Unless an initial performance test was previously conducted and submitted under the referencing subpart and except as specified in [§ 65.157(b)](/cfr/40/65.157.md?p=b), the owner or operator shall conduct an initial performance test of any carbon absorber used as a control device to comply with the provisions of this subpart according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md). As provided in [§ 65.145(b)(1)](/cfr/40/65.145.md?p=b-1), a performance test may be used as an alternative to the design evaluation for storage vessels and low-throughput transfer rack controls. As provided in [§ 65.146(b)](/cfr/40/65.146.md?p=b), no performance test is required to demonstrate compliance for equipment leaks.
  - (2) Unless already permitted by the applicable title V permit, if an owner or operator elects to use a carbon adsorber to replace an existing recovery or control device at a later date, the owner or operator shall notify the Administrator either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, either of the following provisions, as applicable, shall be followed:
    - (i) **Replace final recovery device.** If an owner or operator elects to replace the final recovery device on a process vent with a carbon adsorber used as a control device, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b).
    - (ii) **Replace control device.** If an owner or operator elects to replace a control device on a Group 1 process vent or high-throughput transfer rack with a carbon adsorber used as a control device, the owner or operator shall perform a performance test using the methods specified in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md) within 180 days. The performance test report shall be submitted to the Administrator within 60 days of completing the test as provided in [§ 65.164(b)(2)](/cfr/40/65.164.md?p=b-2).
- (c) **Carbon adsorber monitoring requirements.**
  - (1) Where a carbon adsorber is used as a control device, an organic monitoring device capable of providing a continuous record, or an integrating regeneration stream flow monitoring device having an accuracy of ±10 percent or better capable of recording the total regeneration stream mass or volumetric flow for each regeneration cycle, and a carbon-bed temperature monitoring device capable of recording the carbon bed temperature after each regeneration and within 15 minutes of completing any cooling cycle, shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the carbon adsorber. Where the regeneration stream flow and carbon-bed temperature are monitored, the range shall be in terms of the total regeneration stream flow per regeneration cycle and the temperature of the carbon-bed determined within 15 minutes of the completion of the regeneration cooling cycle. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications in [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart.

# §65.153. Absorbers, condensers, carbon adsorbers, and other recovery devices used as final recovery devices.

- (a) **Final recovery device equipment and operating requirements.**
  - (1) Owners or operators using a recovery device to meet the requirement to operate and maintain a TRE above 1.0 as specified in [§ 65.63(a)(3)](/cfr/40/65.63.md?p=a-3) for process vents shall meet the requirements of this section.
  - (2) Recovery devices used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Recovery device performance test requirements.**
  - (1) **There are no performance test requirements for recovery devices.** Records of TRE index value determination shall be generated as specified in [§ 65.160(c)](/cfr/40/65.160.md?p=c).
  - (2) **Replace a final recovery device or control device.** Unless already permitted by the applicable title V permit, if an owner or operator elects to use a recovery device to replace an existing final recovery or control device at a later date, the owner or operator shall notify the Administrator, either by amendment of the regulated source's title V permit or, if title V is not applicable, by submission of the notice specified in [§ 65.167(a)](/cfr/40/65.167.md?p=a) before implementing the change. Upon implementing the change, the owner or operator shall comply with the applicable provisions of §§ [65.63(e)](/cfr/40/65.63.md?p=e) and [65.67(b)](/cfr/40/65.67.md?p=b).
- (c) **Recovery device monitoring requirements.**
  - (1) Where an absorber is the final recovery device in the recovery system and the TRE index value is between 1.0 and 4.0, either an organic monitoring device capable of providing a continuous record, or a scrubbing liquid temperature monitoring device and a specific gravity monitoring device, each capable of providing a continuous record, shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (2) Where a condenser is the final recovery device in the recovery system and the TRE index value is between 1.0 and 4.0, an organic monitoring device capable of providing a continuous record, or a condenser exit (product side) temperature monitoring device capable of providing a continuous record, shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (3) Where a carbon adsorber is the final recovery device in the recovery system and the TRE index value is between 1.0 and 4.0, an organic monitoring device capable of providing a continuous record, or an integrating regeneration stream flow monitoring device having an accuracy of ±10 percent or better capable of recording the total regeneration stream mass or volumetric flow for each regeneration cycle, and a carbon-bed temperature monitoring device capable of recording the carbon-bed temperature after each regeneration and within 15 minutes of completing any cooling cycle, shall be used. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
  - (4) Unless previously approved by the Administrator under an applicable standard prior to the implementation date of this part, as specified in [§ 65.1(f)](/cfr/40/65.1.md?p=f), if an owner or operator uses a recovery device other than those listed in this subpart, the owner or operator shall submit a description of planned monitoring, reporting and recordkeeping procedures as required under [§ 65.162(e)](/cfr/40/65.162.md?p=e). The Administrator will approve or deny the proposed monitoring, reporting and recordkeeping requirements as part of the review of the submission or permit application or by other appropriate means.
  - (5) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the recovery device. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications in [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1) or upon existing ranges or limits established under a referencing subpart. Where the regeneration stream flow and carbon-bed temperature are monitored, the range shall be in terms of the total regeneration stream flow per regeneration cycle, and the temperature of the carbon-bed determined within 15 minutes of the completion of the regeneration cooling cycle.

# §65.154. Halogen scrubbers and other halogen reduction devices.

- (a) **Halogen scrubber and other halogen reduction device equipment and operating requirements.**
  - (1) An owner or operator of halogen scrubbers and other halogen reduction devices subject to this subpart shall reduce the overall emissions of hydrogen halides and halogens by 99 percent, or reduce the outlet mass of total hydrogen halides and halogens to less than 0.45 kilograms per hour (0.99 pound per hour) as specified in [§ 65.63(b)](/cfr/40/65.63.md?p=b) for process vents, or [§ 65.83(b)](/cfr/40/65.83.md?p=b) for transfer racks, as applicable, and shall meet the requirements of this section.
  - (2) Halogen scrubbers and other halogen reduction devices used to comply with the provisions of this subpart shall be operated at all times when emissions are vented to them.
- (b) **Halogen scrubber and other halogen reduction device performance test requirements.** Unless an initial performance test was previously conducted and submitted under the referencing subpart, an owner or operator of a combustion device followed by a halogen scrubber or other halogen reduction device to control halogenated vent streams in accordance with [§ 65.63(b)(1)](/cfr/40/65.63.md?p=b-1) for process vents, or [§ 65.83(b)(1)](/cfr/40/65.83.md?p=b-1) for transfer racks shall conduct an initial performance test to determine compliance with the control efficiency or emission limits for hydrogen halides and halogens according to the procedures in §§ [65.157](/cfr/40/65.157.md) and [65.158](/cfr/40/65.158.md). Performance test records shall be kept as specified in § [65.160(a)](/cfr/40/65.160.md?p=a) and [(b)](/cfr/40/65.160.md?p=b), and a performance test report shall be submitted as specified in [§ 65.164](/cfr/40/65.164.md).
- (c) **Halogen scrubber and other halogen reduction device monitoring requirements.**
  - (1) Where a halogen scrubber is used, the monitoring equipment specified in paragraphs [(c)(1)(i)](#c-1-i) and [(ii)](#c-1-ii) of this section is required for the scrubber. Monitoring results shall be recorded as specified in [§ 65.161](/cfr/40/65.161.md). General requirements for monitoring and continuous parameter monitoring systems are contained in [§ 65.156](/cfr/40/65.156.md).
    - (i) A pH monitoring device capable of providing a continuous record shall be installed to monitor the pH of the scrubber effluent.
    - (ii) A flow meter capable of providing a continuous record shall be located at the scrubber influent for liquid flow. Gas stream flow shall be determined using one of the following procedures:
      - (A) The owner or operator may determine gas stream flow using the design blower capacity, with appropriate adjustments for pressure drop.
      - (B) If the scrubber is subject to regulations in 40 CFR parts [264](/cfr/40/part264.md) through [266](/cfr/40/part266.md) that have required a determination of the liquid to gas (L/G) ratio prior to the applicable compliance date for the chemical manufacturing process unit of which it is part, as specified in [40 CFR 63.100(k)](/cfr/40/63.100.md?p=k) (if the referencing subpart is [40 CFR part 63](/cfr/40/part63.md), [subpart F](/cfr/40/subpartF.md)), or prior to the implementation date as specified in [§ 65.1(f)](/cfr/40/65.1.md?p=f) (for all other referencing subparts), the owner or operator may determine gas stream flow by the method that had been utilized to comply with those regulations. A determination that was conducted prior to that compliance date may be utilized to comply with this subpart if it is still representative.
      - (C) The owner or operator may prepare and implement a gas stream flow determination plan that documents an appropriate method that will be used to determine the gas stream flow. The plan shall require determination of gas stream flow by a method that will at least provide a value for either a representative or the highest gas stream flow anticipated in the scrubber during representative operating conditions other than startups, shutdowns, or malfunctions. The plan shall include a description of the methodology to be followed and an explanation of how the selected methodology will reliably determine the gas stream flow and a description of the records that will be maintained to document the determination of gas stream flow. The owner or operator shall maintain the plan as specified in [§ 65.5](/cfr/40/65.5.md).
  - (2) Where a halogen reduction device other than a scrubber is used, the procedures in [§ 65.162(e)](/cfr/40/65.162.md?p=e) shall be followed to establish monitoring parameters.
  - (3) The owner or operator shall establish a range for monitored parameters that indicates proper operation of the scrubber or other halogen reduction device. In order to establish the range, the information required in [§ 65.165(c)](/cfr/40/65.165.md?p=c) shall be submitted in the Initial Compliance Status Report or the operating permit application or amendment. The range may be based upon a prior performance test meeting the specifications in [§ 65.157(b)(1)](/cfr/40/65.157.md?p=b-1), or upon existing ranges or limits established under a referencing subpart.