Data reporting requirements.

In addition to the information required by § 98.3(c), you must report the following information at the facility level: (a) [Reserved] (b) Type of smelter technology used. (c) The following PFC-specific information on an annual basis: (1) Perfluoromethane emissions and perfluoroethane emissions from anode effects in all prebake and all Søderberg electrolysis cells combined. (2) Anode effect minutes per cell-day (AE-mins/cell-day), anode effect frequency (AE/cell-day), anode effect duration (minutes). (Or anode effect overvoltage factor ((kg CF4/metric ton Al)/(mV/cell day)), potline overvoltage (mV/cell day), current efficiency (%)). (3) Smelter-specific slope coefficients (or overvoltage emission factors) and the last date when the smelter-specific slope coefficients (or overvoltage emission factors) were measured. (d) Method used to measure the frequency and duration of anode effects (or overvoltage). (e) The following CO 2 -specific information for prebake cells: (1) Annual anode consumption if using the method in § 98.63(g). (2) Annual CO 2 emissions from the smelter. (f) The following CO 2 -specific information for Søderberg cells: (1) Annual paste consumption if using the method in § 98.63(g). (2) Annual CO 2 emissions from the smelter. (g) [Reserved] (h) Exact data elements required will vary depending on smelter technology (e.g., point-feed prebake or Søderberg) and process control technology (e.g., Pechiney or other). [74 FR 56374, Oct. 30, 2009, as amended at 75 FR 79156, Dec. 17, 2010; 79 FR 63784, Oct. 24, 2014; 81 FR 89253, Dec. 9, 2016]