SCHEDULE 5CRITERIA FOR DETERMINING MINIMUM NUMBERS OF SAMPLING POINTS FOR FIXED MEASUREMENTS OF CONCENTRATIONS OF RELEVANT POLLUTANTS AND OZONE IN AMBIENT AIR
PART IIIOZONE: 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 INFORMATION
Population (× 1,000) | Agglomerations (urban and suburban) (a) | Other zones (suburban and rural (b) | Rural background |
|---|---|---|---|
0–250 | 1 | 1 station/50,000 km2 as an average density over all zones | |
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 | |
(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) One station per 25,000 km2 for complex terrain is recommended. | |||