| 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 | 50 μg/m3 PM10, not to be exceeded more than 35 times a calendar year | 20 μg/m3 on 19th July 2001, reducing on 1st January of each following year by equal annual amounts to reach 0 μg/m3 by 1st January 2005 | 1st January 2005 |
2. Annual limit value for the protection of human health | Calendar year | 40 μ g/m3 PM10 | 6.4 μg/m3 on 19th July 2001, reducing on 1st January of each following year by equal annual amounts to reach 0 μg/m3 by 1st January 2005 | 1st January 2005 |