Part III PARTICULATE MATTER (PM10)
England and Wales
| Averaging period | Limit value | Margin of tolerance | Date by which limit value is to be met | |
|---|---|---|---|---|
1.24-hour limit value for the protection of human health | 24 hours | 50μg/m3 PM10, not to be exceeded more than 35 times a calendar year | 10μg/m3 on 1st January 2003, reducing on 1st January of each following year by equal annual amounts to reach 0μg/m3 by 1st January 2005 | 1st January 2005 |
2.Annual limit value for the protection of human health | Calendar year | 40μ g/m3 PM10 | 3.2μg/m3 on 1st January 2003, reducing on 1st January of each following year by equal annual amounts to reach 0μg/m3 by 1st January 2005 | 1st January 2005 |