Tab. I.1 Limit values (LV) for the protection of health according to the Act No. 201/2012 Coll.

Pollutant Averaging interval Assessment threshold
[µg.m-3]
Limit value
[µg.m-3]
LV
Lower
LAT
Upper
UAT
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
CO max. daily 8-h running average 5 000 7 000 10 000
benzene calendar year 2 3.5 5
PM10 4 hours 25
max. 35x/year
35
max. 35x/year
50
max. 35x/year
calendar year 20 28 40
PM2,5 calendar year 12 17 25
Pb calendar year 0.25 0.35 0.5
As calendar year 0.0024 0.0036 0.006
Cd calendar year 0.002 0.003 0.005
Ni calendar year 0.010 0.014 0.020
benzo[a]pyrene calendar year 0.0004 0.0006 0.001
O3 max. daily 8-h running average 120
 25x in 3-year average


Long-term objectives


Pollutant
Application Averaging interval Long-term objective
[µg.m-3]
O3 for the protection of human health max. daily 8-h running average 120