{"data":{"id":"us/40-cfr-table-5-to-subpart-hhhhhhh-of-part-63","jurisdiction":"us","citation":"40 CFR Table 5 to Subpart HHHHHHH of Part 63","heading":"Table 5 to Subpart HHHHHHH of Part 63—Operating Parameters, Operating Limits and Data Monitoring, Recording and Compliance Frequencies for Process Vents","body":"For these control devices, you must monitor these operating parameters . . . Establish the following operating limit during your initial performance test . . . Monitor, record, and demonstrate continuous compliance using these minimum frequencies\nData measurement Data recording Data averaging period for compliance\nProcess Vents\nAny Control device\nFlow to/from the control device N/A Continuous N/A Date and time of flow start and stop.\nThermal Oxidizers\nTemperature (in fire box or downstream ductwork prior to heat exchange) Minimum temperature Continuous Every 15 minutes 3-hour block average.\nTemperature differential across catalyst bed Minimum temperature differential Continuous Every 15 minutes 3-hour block average.\nInlet temperature to catalyst bed and catalyst condition Minimum inlet temperature and catalyst condition as specified in 63.11940 (b)(3) Continuous for temperature, annual for catalyst condition Every 15 minutes for temperature, annual for catalyst condition 3-hour block average for temperature, annual for catalyst condition.\nAbsorbers and Acid Gas Scrubbers\nInfluent liquid flow Minimum inlet liquid flow Continuous Every 15 minutes 3-hour block average.\nInfluent liquid flow and gas stream flow Minimum influent liquid flow to gas stream flow ratio Continuous Every 15 minutes 3-hour block average.\nPressure drop Minimum pressure drop Continuous Every 15 minutes 3-hour block average.\nExhaust gas temperature Maximum exhaust gas temperature Continuous Every 15 minutes 3-hour block average.\nChange in specific gravity of scrubber liquid Minimum change in specific gravity Continuous Every 15 minutes 3-hour block average.\npH of effluent liquid Minimum pH Continuous Every 15 minutes 3-hour block average.\nCausticity of effluent liquid Minimum causticity Continuous Every 15 minutes 3-hour block average.\nConductivity of effluent liquid Minimum conductivity Continuous Every 15 minutes 3-hour block average.\nRegenerative Adsorber\nRegeneration stream flow. Minimum total flow per regeneration cycle Continuous N/A Total flow for each regeneration cycle.\nAdsorber bed temperature. Maximum temperature Continuously after regeneration and within 15 minutes of completing any temperature regulation Every 15 minutes after regeneration and within 15 minutes of completing any temperature regulation 3-hour block average.\nAdsorber bed temperature. Minimum temperature Continuously during regeneration except during any temperature regulating portion of the regeneration cycle N/A Average of regeneration cycle.\nVacuum and duratio of regeneration Minimum vacuum and period of time for regeneration Continuous N/A Average vacuum and duration of regeneration.\nRegeneration frequency Minimum regeneration frequency and duration Continuous N/A Date and time of regeneration start and stop.\nAdsorber operation valve sequencing and cycle time Correct valve sequencing and minimum cycle time Daily Daily N/A.\nNon-Regenerative Adsorber\nAverage adsorber bed life. N/A Daily until breakthrough for 3 adsorber bed change-outs N/A N/A.\nOutlet VOC concentration of the first adsorber bed in series Limits in Table 1 or 2 of this subpart Daily, except monthly (if more than 2 months bed life remaining) or weekly (if more than 2 weeks bed life remaining) N/A Daily, weekly, or monthly.\nCondenser\nTemperature Maximum outlet temperature Continuous Every 15 minutes 3-hour block average.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES","Subpart HHHHHHH—National Emission Standards for Hazardous Air Pollutant Emissions for Polyvinyl Chloride and Copolymers Production"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"6d49fea9e18289b163782d9fad1e7a40841df22631904c4d488c7adb5420fbb5","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-table-4-to-subpart-hhhhhhh-of-part-63","next":"us/40-cfr-table-6-to-subpart-hhhhhhh-of-part-63"},"notice":"GroundRules: Original legal text. Not legal advice."}