Part IV LEAD
England and Wales
| Averaging period | Limit value | Margin of tolerance | Date by which limit value is to be met | |
|---|---|---|---|---|
| Annual limit value for the protection of human health | Calendar year | 0.5μg/m3 | 0.2μg/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 |