§ 372.10 Recordkeeping.
(a) Each person subject to the reporting requirements of this part must retain the following records for a period of 3 years from the date of the submission of a report under § 372.30:
(1) A copy of each report submitted by the person under § 372.30.
(2) All supporting materials and documentation used by the person to make the compliance determination that the facility or establishments is a covered facility under § 372.22 or § 372.45.
(3) Documentation supporting the report submitted under § 372.30 including:
(i) Documentation supporting any determination that a claimed allowable exemption under § 372.38 applies.
(ii) Data supporting the determination of whether a threshold under § 372.25 applies for each toxic chemical.