Schedule 5 Information and alert thresholdsI1
Northern Ireland
Alert thresholds for Sulphur dioxide and Nitrogen dioxide
| Pollutant | Alert thresholdf1 |
|---|---|
(1) To be measured over three consecutive hours at locations representative of air quality over the least 100 km2 or an entire zone, whichever is smaller. | |
| Sulphur dioxide | 500 µg/m3 |
| Nitrogen dioxide | 400 µg/m3 |
Information and alert thresholds for Ozone
| Purpose | Averaging period | Threshold |
|---|---|---|
| Information | 1 hour | 180 µg/m3 |
| Alert | 1 hour | 240 µg/m3 |
Annotations
Commencement
- I1
Sch. 5 in operation at 11.6.2010, see reg. 1
Footnotes
- f1
(1)
To be measured over three consecutive hours at locations representative of air quality over the least 100 km2 or an entire zone, whichever is smaller.