Part I minimum number of sampling points for fixed continuous measurement to assess air quality in view of compliance with the target values, long-term objectives and information and alert thresholds where continuous measurement is the sole source of informationI1
Northern Ireland
| Population (× 1,000) | Agglomerations (urban and suburban) f1 | Other zones (suburban and rural) | Rural background |
|---|---|---|---|
(a) at least 1 station in suburban areas, where the highest exposure of the population is likely to occur. In agglomerations, at least 50% of the stations should be located in suburban areas. | |||
(b) 1 station per 25,000 km2 for complex terrain is recommended. | |||
| 0 – 250 | 1 | 1 station/50,000 km2 as an average density over all zones per country f2 | |
| 251 – 500 | 1 | 2 | |
| 501 – 1,000 | 2 | 2 | |
| 1,001 – 1,500 | 3 | 3 | |
| 1,501 – 2,000 | 3 | 4 | |
| 2,001 – 2,750 | 4 | 5 | |
| 2,751 – 3,750 | 5 | 6 | |
| >3,750 | 1 additional station per 2 million inhabitants | 1 additional station per 2 million inhabitants | |
Annotations
Commencement
- I1
Sch. 3 Pt. I in operation at 9.9.2003, see reg. 1(1)
Footnotes
- f1
(a)
at least 1 station in suburban areas, where the highest exposure of the population is likely to occur. In agglomerations, at least 50% of the stations should be located in suburban areas.
- f2
(b)
1 station per 25,000 km2 for complex terrain is recommended.