Part 1 Assessment thresholds for Group A pollutants
| Annual average | |
|---|---|
| Upper assessment threshold | 70% of limit value (3.5 μg/m3) |
| Lower assessment threshold | 40% of limit value (2 μg/m3) |
| Annual average | |
|---|---|
| Upper assessment threshold | 70% of limit value (3.5 μg/m3) |
| Lower assessment threshold | 40% of limit value (2 μg/m3) |