Total enclosure
Total enclosure means a containment building that is completely enclosed with a floor, walls, and a roof to prevent exposure to the elements and to assure containment of lead bearing material with limited openings to allow access and egress for people and vehicles. The total enclosure must provide an effective barrier against fugitive dust emissions such that the direction of air flow through any openings is inward and the enclosure is maintained under constant negative pressure.
Source
40 CFR § 63.542
Scoping language
Terms used in this subpart are defined in the Clean Air Act, in subpart A of this part, or in this section as follows: