| 10 min | 30 min | 60 min | 4 hr | 8 hr | |
|---|---|---|---|---|---|
| ppm | |||||
| AEGL 1 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| AEGL 2 | 1.4 | 1.4 | 1.1 | 0.69 | 0.45 |
| AEGL 3 | 3.0 | 3.0 | 2.4 | 1.5 | 0.98 |
US EPA
United States Environmental Protection Agency
| 10 min | 30 min | 60 min | 4 hr | 8 hr | |
|---|---|---|---|---|---|
| ppm | |||||
| AEGL 1 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| AEGL 2 | 1.4 | 1.4 | 1.1 | 0.69 | 0.45 |
| AEGL 3 | 3.0 | 3.0 | 2.4 | 1.5 | 0.98 |