(b)

1. (1) Notwithstanding any other provision of law regulating a district permit system, an owner or operator of an existing portable emissions unit may relocate that equipment within the same air basin if both of the following requirements are met:

   1. (A) The owner or operator provides, not less than 30 days prior to the date that the equipment is relocated, written notice to the district with jurisdiction over the location to which the equipment is relocated, and any additional notice required by federal law.
   2. (B) The existing permit conditions are at least as stringent as the permit requirements in the district with jurisdiction over the location to which the equipment is relocated.

2. (2) For purposes of this subdivision, “portable emissions unit” means any article, machine, or other contrivance, including an internal combustion engine, that meets all of the following criteria:

   1. (A) Emits or may emit, or results in the emission of, any air contaminant.
   2. (B) Either by itself, or as part of another piece of equipment, is designed to be, and is capable of, being moved from one location to another.
   3. (C) Must be periodically moved from one location to another because of the nature of the operation in which it is used.