ISKOAir pollution limit values
according to the Act
no. 201/2012 Coll. on the air protection as amended and Decree
no. 330/2012 Coll.
on the method of assessing and evaluating the level of pollution, the scope of informing the publis about the level of ambient air pollution
and during smog situations as amended
1. Air pollution limit values for the protection of health and the maximum number of exceedances
| Pollutant | Averaging interval | Assessment threshold [µg·m−3] |
Limit value [µg·m−3] |
|
| Lower | Upper | |||
| SO2 | 1 hour | — | — | 350 max. 24x/year |
| 24 hours | 50 max. 3x/year |
75 max. 3x/year |
125 max. 3x/year |
|
| NO2 | 1 hour | 100 max. 18x/year |
140 max. 18x/year |
200 max. 18x/year |
| calendar year | 26 | 32 | 40 | |
| PM10 | 24 hours | 25 max. 35x/year |
35 max. 35x/year |
50 max. 35x/year |
| calendar year | 20 | 28 | 40 | |
| PM2.5 | calendar year | 12 | 17 | 20 (since 2020)* |
| Pb | calendar year | 0.25 | 0.35 | 0,5 |
| CO | max. daily 8-h running average | 5 000 | 7 000 | 10 000 |
| Benzene | calendar year | 2 | 3.5 | 5 |
*Air pollution limit value for PM2,5 applied since 2020, the limit value of 25 µg·m−3 was applied to 2019
Note:
The maximum daily eight-hour mean concentration
shall be selected by examining eight-hour running averages, calculated from hourly data
and updated each hour. Each eight-hour average so calculated shall be assigned
to the day on which it ends. i.e. the first calculation period for any one day
will be the period from 17:00 on the previous day to 01:00 on that day;
the last calculation period for any one day will be the period
from 16:00 to 24:00 on the day.
2. Air pollution limit values for the protection of ecosystems and vegetation
| Pollutant | Averaging interval | Assessment threshold [µg·m−3] |
Limit value [µg·m−3] |
|
| Lower | Upper | |||
| SO2 | year and winter period (1.10.-31.3.) | 8 | 12 | 20 |
| NOx | calendar year | 19.5 | 24 | 30 |
3. Air pollution limit values for the total content of pollutants in PM10 particles for the protection of human health
| Pollutant | Averaging interval | Assessment threshold [ng·m−3] | Limit value [ng·m−3] |
|
| Lower | Upper | |||
| As | calendar year | 2.4 | 3.6 | 6 |
| Cd | calendar year | 2 | 3 | 5 |
| Ni | calendar year | 10 | 14 | 20 |
| Benzo[a]pyrene | calendar year | 0.4 | 0.6 | 1 |
4. Air pollution limit values for ground-level ozone
| Application | Averaging interval | Limit value | Maximum number of exceedances |
| for the protection of health1) | max. daily 8-h running average2) | 120 µg·m−3 | 253) |
| for the protection of ecosystems and vegetation4) | AOT405) | 18 000 µg·m−3·h6) | 0 |
Note:
1) Compliance with the air pollution limit is evaluated on the basis of the average for 3 calendar years.
2) The maximum daily eight-hour average concentration is determined by assessing eight-hour moving averages calculated from hourly data and updated every hour.
Each eight-hour average is credited on the day on which it ends, i.e. the first calculation is made from hourly concentrations
during the period 17:00 of the previous day and 01:00 of that day. The last calculation for a given day is performed for the period from 16:00 to 24:00.
3) If the limit value is complied with at the maximum number of exceedances in the zone or agglomeration, it is necessary to strive to achieve
a zero number of exceedances.
4) Compliance with the limit value is evaluated on the basis of the average for 5 calendar years.
5) For the purposes of this Act, AOT40 means the sum of differences between hourly concentrations greater than 80 µg·m−3 (= 40 ppb)
and 80 µg·m−3 in a given period using only hourly values measured each day between 08:00 and 20:00 CET, calculated from hourly values
in summer (May 1 - July 31).
6) If the limit value in the zone or agglomeration of 18,000 µg·m−3·h is complied with, it is necessary to strive to reach the limit value
of 6,000 µg·m−3·h.
