Directive 2004/107/EC of the European Parliament and of the Council of 15 December 2004 relating to arsenic, cadmium, mercury, nickel and polycyclic aromatic hydrocarbons in ambient air
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Dyma’r fersiwn wreiddiol (fel y’i gwnaed yn wreiddiol).
IV.Criteria for determining numbers of sampling points for fixed measurement of concentrations of arsenic, cadmium, nickel and benzo(a)pyrene in ambient air
Minimum number of sampling points for fixed measurement to assess compliance with target values for the protection of human health in zones and agglomerations where fixed measurement is the sole source of information.
(a)Diffuse sources
|
Population of agglomeration or zone(thousands) | If maximum concentrations exceed the upper assessment threshold | If maximum concentrations are between the upper and lower assessment thresholds |
---|
As, Cd, Ni | B(a)P | As, Cd, Ni | B(a)P |
---|
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 |
(b)Point sources
For the assessment of pollution in the vicinity of point sources, the number of sampling points for fixed measurement should be determined taking into account emission densities, the likely distribution patterns of ambient air pollution and potential exposure of the population.
The sampling points should be sited such that the application of BAT as defined by Article 2(11) of Directive 96/61/EC can be monitored.
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