Runaround scrap
Runaround scrap means scrap materials generated on-site by aluminum casting, extruding, rolling, scalping, forging, forming/stamping, cutting, and trimming operations and that do not contain paint or solid coatings. Uncoated/unpainted aluminum chips generated by turning, boring, milling, and similar machining operations may be clean charge if they have been thermally dried or treated by a centrifugal cleaner, but are not considered to be runaround scrap.
Source
40 CFR § 63.1503
Scoping language
Terms used in this subpart are defined in the Clean Air Act as amended (CAA), in 63.2, or in this section as follows: