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Division A Minimum number of sampling points for fixed measurements of concentrations of ozoneF1

United Kingdom

Minimum number of sampling points for fixed continuous measurements to assess compliance with target values, long — term objectives and information and alert thresholds where such measurements are the sole source of information.

Population (× 1 000 )	Agglomeration ^f1	Other zones	Rural background
At least 1 station in areas where exposure of the population to the highest concentrations of ozone is likely to occur. In agglomerations, at least 50 % of the stations shall be located in suburban areas.
1 station per 25 000 km ² for complex terrain is recommended.
< 250		1	1 station/ 50 000 km ² as an average density over all zones per country ^f2
< 500	1	2
< 1 000	2	2
< 1 500	3	3
< 2 000	3	4
< 2 750	4	5
< 3 750	5	6
> 3 750	One additional station per 2 million inhabitants	One additional station per 2 million inhabitants

Annotations

Textual amendments

F1: Substituted by Commission Directive (EU) 2015/1480 of 28 August 2015 amending several annexes to Directives 2004/107/EC and 2008/50/EC of the European Parliament and of the Council laying down the rules concerning reference methods, data validation and location of sampling points for the assessment of ambient air quality (Text with EEA relevance).

Footnotes

f1: At least 1 station in areas where exposure of the population to the highest concentrations of ozone is likely to occur. In agglomerations, at least 50 % of the stations shall be located in suburban areas.
f2: 1 station per 25 000 km ² for complex terrain is recommended.