The owner or operator shall maintain records in written or electronic format sufficient to demonstrate compliance with each applicable requirement for a minimum of five years, including but not limited to:
  (1) records in units of pounds per hour (lb/hr) of production of carbon black for each grade of carbon black from each carbon black production unit;
  (2) twice daily records of sulfur content by weight of the carbon black oil feedstock;
  (3) daily records of sulfur content by weight of the carbon black produced for each grade of carbon black produced by each carbon black production unit;
  (4) records of continuous carbon black oil feedstock flow rates for each carbon black production unit;
  (5) records of continuous tail gas volumetric flow rates to each tail gas combustion device from each production unit covered by §112.242 of this title (relating to Control Requirements);
  (6) for each block one-hour period of operation of a carbon black production unit, the required mass balance calculations of emissions of sulfur dioxide (SO2) from each EPN for those sources in operation without a continuous emissions monitoring system (CEMS) for SO2;
  (7) the continuous emissions monitoring data of emissions of SO2 for each EPN in operation with a CEMS for SO2;
  (8) documentation of any period that emission limits or standards were exceeded, and copies of exceedance reports submitted to the appropriate Texas Commission on Environmental Quality regional office; and
  (9) copies of test reports for tests conducted in accordance with §112.244 of this title (relating to Testing Requirements) and associated records.

Source Note: The provisions of this §112.246 adopted to be effective October 27, 2022, 47 TexReg 6985