The most common types of portable equipment registered with the District are gas and diesel-fueled IC engines. Portable engines used in well drilling and servicing, power generation; pumping; gas compression; pile driving; welding; cranes; and woodchipping are eligible for registration. In addition to engines, portable equipment used for abrasive blasting, concrete batching, and rock, sand, or gravel processing may also be eligible for registration.
To be registered as portable equipment, a unit must meet also the definition of “portable emissions unit” in District Rule 2280 (Portable Equipment Registration). This definition requires that the equipment be truly portable (capable of being moved from one location to another). It also requires that the unit not reside in one location (other than a storage location) for more than six months. Equipment may not be registered if it replaces or supplements an ongoing function of a permitted stationary source or if it operates for essentially the full annual length of a stationary source operation. Please refer to District Policy SSP-2150 (Allowed Operation of Portable Registered Equipment at a Stationary Source) to determine eligibility.
