Schedule Air Quality Objectives
Northern Ireland Not yet in force
| Pollutant | Air Quality objective levelsf1 | Date to be achieved by |
|---|---|---|
| (1) | (2) | (3) |
*
| ||
| Benzene | 16.25μg/m3 (5ppb) when expressed as a running annual mean | 31 December 2003 |
| 3.25μg/m3 when expressed as a running annual mean | 31 December 2010 | |
| 1,3-butadiene | 2.25μg/m3 (1ppb) when expressed as a running annual mean | 31 December 2003 |
| Carbon monoxide | 10mg/m3 (8.6ppm) when expressed as a maximum daily running 8 hour mean | 31 December 2003 |
| Lead | 0.5μg/m3 when expressed as an annual mean | 31 December 2004 |
| 0.25mg/m3 when expressed as an annual mean | 31 December 2008 | |
| Nitrogen dioxide | 200μg/m3 (105ppb) when expressed as a 1 hour mean, not to be exceeded more than 18 times a year | 31 December 2005 |
| 40μg/m3 (21ppb) when expressed as an annual mean | 31 December 2005 | |
| Sulphur dioxide | F1350μg/m3 (132ppb) when expressed as a 1 hour mean, not to be exceeded more than 24 times a year | 31 December 2004 |
| 125μg/m3 (47ppb) when expressed as a 24 hour mean, not to be exceeded more than 3 times a year | 31 December 2004 | |
| 266μg/m3 (100ppb) when expressed as a 15 minute mean, not to be exceeded more than 35 times a year | 31 December 2005 | |
| Particles (PM10) | 50μg/m3 when expressed as a 24 hour mean, not to be exceeded more than 35 times a year | 31 December 2004 |
| 40μg/m3 when expressed as an annual mean | 31 December 2004 | |
- 1Interpretation
- 2Interpretation
- 3Interpretation
- 4Interpretation
- 5Interpretation
- 6Interpretation
- 7Interpretation
- 8Interpretation
Annotations
Textual amendments
- F1
words in Sch. substituted (1.1.2004) by Air Quality (Amendment) Regulations (Northern Ireland) 2003 (S.R. 2003/543), regs. 1, 2
Footnotes
- f1
*
μg/m3: micrograms per cubic metre
ppb/ppm: parts per billion/million
mg/m3: milligrams per cubic metre