Part 3 Group B pollutants
| Population of zone (thousands) | If maximum concentrations exceed the upper assessment thresholdf1 | If maximum concentrations are between the upper and lower assessment thresholds | ||
|---|---|---|---|---|
| Arsenic, Cadmium, Nickel | Benzo(a) pyrene | Arsenic, Cadmium, Nickel | Benzo(a)pyrene | |
(1) To include at least one urban-background station and for benzo(a)pyrene also one traffic-oriented station provided this does not increase the number of sampling points. | ||||
| 0—749 | 1 | 1 | 1 | 1 |
| 750—1,999 | 2 | 2 | 1 | 1 |
| 2,000—3,749 | 2 | 3 | 1 | 1 |
| 3,750—4,749 | 3 | 4 | 2 | 2 |
| 4,750—5,999 | 4 | 5 | 2 | 2 |
| =<6,000 | 5 | 5 | 2 | 2 |
Annotations
Footnotes
- f1
(1)
To include at least one urban-background station and for benzo(a)pyrene also one traffic-oriented station provided this does not increase the number of sampling points.