Minnesota Administrative Rules
Agency 167 - Pollution Control Agency
Chapter 7045 - HAZARDOUS WASTE
MANAGEMENT OF USED OIL
Part 7045.0825 - USED OIL INTRODUCED INTO CRUDE OIL PIPELINES OR A PETROLEUM REFINING FACILITY

A. Used oil mixed with crude oil or natural gas liquids (for example, in a production separator or crude oil stock tank) for insertion into a crude oil pipeline is exempt from the requirements of parts 7045.0790 to 7045.0990. The used oil is subject to the requirements of parts 7045.0790 to 7045.0990 prior to the mixing of used oil with crude oil or natural gas liquids.

B. Mixtures of used oil and crude oil or natural gas liquids containing less than one percent used oil that are being stored or transported to a crude oil pipeline or petroleum refining facility for insertion into the refining process at a point prior to crude distillation or catalytic cracking are exempt from the requirements of parts 7045.0790 to 7045.0990.

C. Used oil that is inserted into the petroleum refining facility process before crude distillation or catalytic cracking without prior mixing with crude oil is exempt from the requirements of parts 7045.0790 to 7045.0990, provided that the used oil constitutes less than one percent of the crude oil feed to any petroleum refining facility process unit at any given time. Prior to insertion into the petroleum refining facility process, the used oil is subject to the requirements of parts 7045.0790 to 7045.0990.

D. Except as provided in item E, used oil that is introduced into a petroleum refining facility process after crude distillation or catalytic cracking is exempt from the requirements of parts 7045.0790 to 7045.0990 only if the used oil meets the specifications of part 7045.0840. Prior to insertion into the petroleum refining facility process, the used oil is subject to the requirements of parts 7045.0790 to 7045.0990.

E. Used oil that is incidentally captured by a hydrocarbon recovery system or wastewater treatment system as part of routine process operations at a petroleum refining facility process is exempt from the requirements of parts 7045.0790 to 7045.0990. This exemption does not extend to used oil which is intentionally introduced into a hydrocarbon recovery system, for example, by pouring collected used oil into the wastewater treatment system.

F. Tank bottoms from stock tanks containing exempt mixtures of used oil and crude oil, or natural gas liquids, are exempt from parts 7045.0790 to 7045.0990.