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How does BCAA classify registered sources?
The BCAA has separated the registered sources into several categories based upon the source type and size of emission.
Gas Stations
The BCAA has 67 registered gas stations within Benton County. This type of source is relatively simple, with almost all of the emissions occurring as a result of gasoline evaporation. Larger facilities are required to install higher efficiency control equipment to better control these emissions.
Class 1
These smaller sources are varied in nature and include such businesses as fruit processors, rock crushers, and asphalt plants. The classification of these sources is based upon the amount of pollution that the facility emits, as shown in Table 1. As of 2002, the BCAA has 81 Class 1 sources registered.
As a further sub-classification, some Class 1 sources emit toxic air pollutants. Toxics are substances that have been identified in WAC 173-460 as having adverse health effects. These sources, such as auto body painters, dry cleaners, and businesses with high solvent use, are required to have much more stringent air pollution controls.
Class 2
As with Class 1 sources, these sources emit a variety of pollutants, but often on a much larger scale. Class 2 sources include major food processors, fertilizer handling facilities, and major manufacturers. These sources are classified by the amounts of pollution emitted as shown in Table 1. As of 2002, the BCAA has 10 registered Class 2 sources. The BCAA also has provision to classify Class 2 Toxic sources if necessary.
Class 3
These are the largest sources, emitting more than 100 tons of pollution in a year. These sources have substantial federal and state requirements due to both the amounts of pollution emitted and the complexity of the facilities. The BCAA has two Class 3 sources registered.
TABLE 1
| Amount of Pollutant Emitted in Tons per Year | |||
|---|---|---|---|
| Pollutant | Class 1 | Class 2 | Class 3 |
| Carbon Monoxide | < 20 | 20 to 100 | 100 or more |
| Nitrogen Oxides | < 8 | 8 to 99 | 100 or more |
| Sulfur Oxides | < 8 | 8 to 100 | 100 or more |
| Particulate Matter | < 3 | 3 to 100 | 100 or more |
| Volatile Organic Compounds | < 8 | 8 to 100 | 100 or more |
| Lead | < 0.12 | 0.12 to 100 | 100 or more |
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