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Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Table 3 to Subpart NNNa of Part 60: Table 3 to Subpart NNNa of Part 60—Operating Parameters, Operating Parameter Limits and Data Monitoring, Recordkeeping and Compliance Frequencies

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Where this section sits in the code
  1. Title 40—Protection of Environment
  2. CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
  3. SUBCHAPTER C—AIR PROGRAMS
  4. PART 60—STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES
  5. Subpart NNNa—Standards of Performance for Volatile Organic Compound (VOC) Emissions From Synthetic Organic Chemical Manufacturing Industry (SOCMI) Distillation Operations for Which Construction, Reconstruction, or Modification Commenced After April 25, 2023

For the operating parameter applicable to you, as specified in table 2 You must establish the following operating parameter limit . . . And you must monitor, record, and demonstrate continuous compliance using these minimum frequencies . . .

Data measurement Data recording Data averaging period for compliance

Absorbers

1. Exit temperature of the absorbing liquid Maximum temperature Continuous Every 15 minutes 3-hour block average.

2. Exit specific gravity Exit specific gravity range Continuous Every 15 minutes 3-hour block average.

Boilers or process heaters

(with a design heat input capacity <44MW and vent stream is not introduced with or as the primary fuel)

3. Firebox temperature Minimum firebox temperature Continuous Every 15 minutes 3-hour block average.

Catalytic incinerators

4. Temperature in gas stream immediately before the catalyst bed Minimum temperature Continuous Every 15 minutes 3-hour block average.

5. Temperature difference between the catalyst bed inlet and the catalyst bed outlet Minimum temperature difference Continuous Every 15 minutes 3-hour block average.

Carbon adsorbers

6. Total regeneration stream mass flow during carbon bed regeneration cycle(s) Minimum mass flow during carbon bed regeneration cycle(s) Continuously during regeneration Every 15 minutes during regeneration cycle Total flow for each regeneration cycle.

7. Total regeneration stream volumetric flow during carbon bed regeneration cycle(s) Minimum volumetric flow during carbon bed regeneration cycle(s) Continuously during regeneration Every 15 minutes during regeneration cycle Total flow for each regeneration cycle.

8. Temperature of the carbon bed after regeneration [and within 15 minutes of completing any cooling cycle(s)] Maximum temperature of the carbon bed after regeneration Continuously during regeneration and for 15 minutes after completing any cooling cycle(s) Every 15 minutes during regeneration cycle (including any cooling cycle) Average of regeneration cycle.

9. Breakthrough As defined in § 60.661a As required by § 60.663a(a)(6)(iii)(B) Each monitoring event N/A.

Condensers

10. Exit (product side) temperature Maximum temperature Continuous Every 15 minutes 3-hour block average.

Scrubbers for halogenated vent streams

11. pH of scrubber effluent Minimum pH Continuous Every 15 minutes 3-hour block average.

12. Influent liquid flow Minimum inlet liquid flow Continuous Every 15 minutes 3-hour block average.

13. Influent liquid flow rate and gas stream flow rate Minimum influent liquid-to-gas ratio Continuous Every 15 minutes 3-hour block average.

Thermal incinerators

14. Firebox temperature Minimum firebox temperature Continuous Every 15 minutes 3-hour block average.

Control devices other than an incinerator, boiler, process heater, or flare; or recovery devices other than an absorber, condenser, or carbon adsorber

15. As specified by the Administrator 15. As specified by the Administrator 15. As specified by the Administrator 15. As specified by the Administrator 15. As specified by the Administrator.

Collected 2026-08-27T02:26:04Z. Source file · JSON

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