Limit values (LV) for the protection of ecosystems and vegetation
| Pollutant | Averaging interval | Assessment threshold [μg.m-3] | Air pollution limit value [μg.m-3] LV |
|
| Lower LAT |
Upper UAT |
|||
| SO2 | year and winter period (1.10.-31.3.) | 8 | 12 | 20 |
| NOx | calendar year | 19.5 | 24 | 30 |
Target value and long-term objective for the protection of
ecosystems
| Pollutant | Averaging interval | Long-term objective [μg.m-3.h] |
Target value with effect from 31.12.2009* |
| O3 | AOT40, calculated from 1h values between May and July |
6 000 | 18 000 average for 5 years |
*Compliance with ozone target values will be assessed as of
this date. That is, 2010 will be the first year the data for which is used in
calculating compliance over the following five years, as appropriate.
Note:
AOT40 is the sum of differences between the hourly concentration higher than 80
μg.m-3 (= 40 ppb) and the value 80 μg.m-3 in the given
period by using only hourly values measured every day between 8:00 and 20:00 CET.