| Air Environmental
Indicators 1997 |
||||
| Amount of Emissions (1996 Tons) Pollutant |
Stationary Sources |
Mobile Sources |
Area Sources |
Totals |
| Carbon Monoxide (CO) | 953 | 73,882 | 38,720 | 113,555 |
| Volatile Organic Compounds (VOCs) | 4,247 | 8,439 | 13,830 | 26,516 |
| Nitrogen Oxides (NOx) | 687 | 17,295 | 6,400 | 24,382 |
| Total Pollution | 5,887 | 99,616 | 58,950 | 164,453 |
| Permitted Air Pollution Sources | ||||
| Major (> 100 tons actually emitted) | 15 | |||
| Minor (< 100 tons actually emitted) | 284 | |||
| Stage I (Gasoline Service Stations) | 248 | |||
| Transportation (parking) Facilities | 29 | |||
| Total | 576 | |||
| Days Exceeding Standard | ||||
| Ozone (O3) | 0 | |||
| Carbon Monoxide (CO) | 0 | |||
| Other (PM-10, NOx, SOx, Radiation) | 0 | |||
| Air Quality Index (AQI) | ||||
| Good Days | 218 | |||
| Moderate Days | 145 | |||
| Unhealthful Days | 2 | |||
| Mobile Source Activity | ||||
| Registered Vehicles | 471,964 | |||
| Daily Vehicle Miles Travelled (VMT) | 21,000,000 | |||
| Bus Transit Ridership (Total Passengers) | 12,127,525 | |||
| Journey-to-Work Trips using Transit System | 3% | |||
| Weather | ||||
| Days Classified as Hazy | 69 | |||
| Number of Days > 90oF | 50 | |||
| Notices of Violation (non-procedural) | ||||
| Permitted Sources | 58 | |||
| Total (Permitted, Registered, and non-permitted Sources) | 69 | |||