.
| S.No | Parameter | Unit | Averaging Period | Concentration |
|---|---|---|---|---|
| 1 | Sulfur Dioxide | ug/m3 | 24 hr annual |
365 80 |
| 2 | Particulate Matter (< 10 microns diameter) |
ug/m3 | 24 hr annual |
150 50 |
| 3 | Nitrogen Oxides, as NO2 | ug/m3 | 1 hr 24 hr annual |
400 150 100 |
| 4 | Photochemical Oxidants, as O3 | ug/m3 | 1 hr 8 hr |
235 160 |
| 5 | Carbon Monoxide | ug/m3 | 1 hr 8 hr |
40 10 |
| 6 | Lead | ug/m3 | 3 months average | 1.5 |
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