40 CFR Appendix Table 2 to Subpart NNNa of Part 60 - Monitoring Requirements for Complying With 98 Weight-Percent Reduction of Total Organic Compounds Emissions or a Limit of 20 Parts per Million by Volume

Non-flare control device or recovery device	Parameters to be monitored
1. All control and recovery devices	a. Presence of flow diverted to the atmosphere from the control and recovery device; or
	b. Monthly inspections of sealed valves
2. Absorber	a. Exit temperature of the absorbing liquid; and
	b. Exit specific gravity
3. Boiler or process heater with a design heat input capacity less than 44 megawatts and vent stream is not introduced with or as the primary fuel	Firebox temperature a
4. Catalytic incinerator	Temperature upstream and downstream of the catalyst bed
5. Carbon adsorber, regenerative	a. Total regeneration stream mass or volumetric flow during carbon bed regeneration cycle(s); and
	b. Temperature of the carbon bed after regeneration [and within 15 minutes of completing any cooling cycle(s)]
6. Carbon adsorber, non-regenerative or regenerated offsite	Breakthrough
7. Condenser	Exit (product side) temperature
8. Scrubber for halogenated vent streams	a. pH of scrubber effluent; and
	b. Scrubber liquid and gas flow rates
9. Thermal incinerator	Firebox temperature a
10. Control devices other than an incinerator, boiler, process heater, or flare; or recovery devices other than an absorber, condenser, or carbon adsorber	As specified by the Administrator

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