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§ 98.317 Records that must be retained.
In addition to the records required by § 98.3(g), you must retain the records specified in paragraphs (a) through (c) of this section for each titanium dioxide production facility.
(a) If a CEMS is used to measure CO2 emissions, then you must retain under this subpart required for the Tier 4 Calculation Methodology in § 98.37 and the information listed in this paragraph (a):
(1) Records of all calcined petroleum coke purchases.
(2) Annual operating hours for each titanium dioxide process line.