ANNEX I

LIMIT VALUES AND THE ALERT THRESHOLD FOR SULPHUR DIOXIDE Limit values for sulphur dioxide Limit values must be expressed in μg/m3. The volume must be standardised at a temperature of 293 °K and a pressure of 101,3 kPa. >TABLE> Alert threshold for sulphur dioxide 500 μg/m3 measured over three consecutive hours at locations representative of air quality over at least 100 km2 or an entire zone or agglomeration, whichever is the smaller. Minimum details to be made available to the public when the alert threshold for sulphur dioxide is exceeded Details to be made available to the public should include at least: the date, hour and place of the occurrence and the reasons for the occurrence, where known; any forecasts of: changes in concentrations (improvement, stabilisation, or deterioration), together with the reasons for those changes, the geographical area concerned, the duration of the occurence; the type of population potentially sensitive to the occurrence; the precautions to be taken by the sensitive population concerned.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-12 · Text as adopted (Official Journal); later amendments are not incorporated in this text.