air-ann-dir-2008-50

Annexes II VII XI XII XIII XIV - Assessment Thresholds & Limit Values

This list contains the Limit, Critical, Target and Long-term Values on ambient air for protection of human health and vegetation. It also contains the Alert, Information and Upper and Lower Assessment thresholds for sulphur dioxide, nitrogen dioxide, benzene, carbon monoxide, lead, PM2.5, PM10 and ozone.

Sulphur dioxide

EC / List no: 231-195-2 CAS no: 7446-09-5
Upper assessment threshold
75 ug/m3
Lower assessment threshold
50 ug/m3
Average limit
125 ug/m3
Tolerance margin
0 %
Objective
Protection of Human Health
Average sampling duration
1 day
Annex
XI (Section B),II (Section A1)
Notes
01 Without prejudice to Annex I, the criteria for 'Required proportion of valid data' shall be used for checking validity when aggregating data and calculating statistical parameters

03 Limit value not to be exceeded more than 3 times a calendar year. Applies to Upper and lower thresholds.

07 Already in force since 1 January 2005

14 The required proportion of valid data for the Limit Value referes to the percentage of the hourly averages

30 Average Limit is the Limit Value, a level fixed with the aim of avoiding, preventing or reducing harmful effects on human health and/or the environment and not to be exceeded once attained


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