40 C.F.R. § 63 app Table 4 to Subpart OOO of Part 63
Current through October 31, 2024
| Device | Parameters to be monitored | Established operating parameter(s) |
| Scrubber | pH of scrubber effluent; and scrubber liquid and gas flow rates | Minimum pH; and minimum liquid/gas ratio |
| Absorber | Exit temperature of the absorbing liquid; and exit specific gravity of the absorbing liquid | Maximum temperature; and maximum specific gravity |
| Condenser | Exit temperature | Maximum temperature |
| Carbon absorber | Total regeneration steam or nitrogen flow, or pressure (gauge or absolute) aduring carbon bed regeneration cycle; and temperature of the carbon bed after regeneration (and within 15 minutes of completing any cooling cycle(s)) | Maximum flow or pressure; and maximum temperature |
| Thermal incinerator | Firebox temperature | Minimum temperature |
| Catalytic incinerator | Temperature upstream and downstream of the catalyst bed | Minimum upstream temperature; and minimum temperature difference across the catalyst bed |
| Boiler or process heater | Firebox temperature | Minimum temperature |
| Other devices (or as an alternate to the requirements previously presented in this table) b | Organic HAP concentration level or reading at outlet of device | Maximum organic HAP concentration or reading |
a 25 to 50 mm (absolute) is a common pressure level obtained by pressure swing absorbers.
b Concentration is measured instead of an operating parameter.
40C.F.R. 63 app Table 4 to Subpart OOO of Part 63