| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Best Available Control Technology | Environment | 1: The most stringent technology available for controlling emissions; major sources are required to use BACT, unless it can be demonstrated that it is not feasible for energy, environmental, or economic reasons. (BACT). (references) | |
| 2: For any specific source, the currently available technology producing the greatest reduction of air pollutant emissions, taking into account energy, environmental, economic, and other costs. (BACT). (references) | |||
| 3: The control level (or control measures) required for sources subject to the Prevention of Significant Deterioration program. (see 40CFR 52.21(b)). (references) | |||
Source: compiled by the editor from various references; see credits. | Top | ||