40 CFR §279.57

1. (a)Operating record.
   1. (1)The owner or operator must keep a written operating record at the facility.
   2. (2)The following information must be recorded, as it becomes available, and maintained in the operating record until closure of the facility;
      1. (i)Records and results of used oil analyses performed as described in the analysis plan required under § 279.55; and
      2. (ii)Summary reports and details of all incidents that require implementation of the contingency plan as specified in § 279.52(b).
2. (b)Reporting. A used oil processor/re-refiner must report to the Regional Administrator, in the form of a letter, on a biennial basis (by March 1 of each even numbered year), the following information concerning used oil activities during the previous calendar year;
   1. (1)The EPA identification number, name, and address of the processor/re-refiner;
   2. (2)The calendar year covered by the report; and
   3. (3)The quantities of used oil accepted for processing/re-refining and the manner in which the used oil is processed/re-refined, including the specific processes employed.