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Electronic Code of Federal Regulations

e-CFR data is current as of January 16, 2020

Title 40Chapter ISubchapter CPart 63Subpart DDDD → Appendix


Title 40: Protection of Environment
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES (CONTINUED)
Subpart DDDD—National Emission Standards for Hazardous Air Pollutants: Plywood and Composite Wood Products


Table 2 to Subpart DDDD of Part 63—Operating Requirements

If you operate a(n) .  .  .You must .  .  .Or you must .  .  .
(1) Thermal oxidizerMaintain the 3-hour block average firebox temperature above the minimum temperature established during the performance testMaintain the 3-hour block average THC concentrationa in the thermal oxidizer exhaust below the maximum concentration established during the performance test.
(2) Catalytic oxidizerMaintain the 3-hour block average catalytic oxidizer temperature above the minimum temperature established during the performance test; AND check the activity level of a representative sample of the catalyst at least every 12 monthsMaintain the 3-hour block average THC concentrationa in the catalytic oxidizer exhaust below the maximum concentration established during the performance test.
(3) BiofilterMaintain the 24-hour block biofilter bed temperature within the range established according to §63.2262(m)Maintain the 24-hour block average THC concentrationa in the biofilter exhaust below the maximum concentration established during the performance test.
(4) Control device other than a thermal oxidizer, catalytic oxidizer, or biofilterPetition the EPA Administrator for site-specific operating parameter(s) to be established during the performance test and maintain the average operating parameter(s) within the range(s) established during the performance testMaintain the 3-hour block average THC concentrationa in the control device exhaust below the maximum concentration established during the performance test.
(5) Process unit that meets a compliance option in Table 1A of this subpart, or a process unit that generates debits in an emissions average without the use of a control deviceMaintain on a daily basis the process unit controlling operating parameter(s) within the ranges established during the performance test according to §63.2262(n)Maintain the 3-hour block average THC concentrationa in the process unit exhaust below the maximum concentration established during the performance test.

aYou may choose to subtract methane from THC measurements.

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