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Emission limits

Valid air pollution limits for pollutants measured in the stations of the Environmental Department of the  Brno City Municipality
 
 
Valid air pollution limits applicable to pollutants measured at air pollution monitoring stations of the Statutory City of Brno, Environmental Department of the Brno City Municipality, in accordance with Annex No. 1 to Act No. 201/2012 Sb., on Air Protection.
 
 
 
Pollutant
Averaging period
Air pollution limit value
(mg.m-3)
SO2
1 hour
24 hours
3501)
1252)
PM2,5
1 year
25
PM10
24 hours
1 year
503)
                     40
NO2
1 hour
1 year
2004)
                      40
CO
max. daily eight-hour average
                10000
O3
max. daily eight-hour sliding average
1205)
 
SO2     - sulphur dioxide
PM2,5    - suspended particulate matter, fraction 2,5 mm
PM10    - suspended particulate matter, fraction 10 mm
NO2     - nitrogen dioxide
CO      - carbon monoxide
O3          - ground-level ozone
 
Note.:
1)         shall not be exceeded more than 24 times in a calendar year
2)         shall not be exceeded more than 3 times in a calendar year
3)         shall not be exceeded more than 35 times in a calendar year
4)         shall not be exceeded more than 18 times in a calendar year
5)         shall not be exceeded more than 25 days in a calendar year
 
 
 
 
 
 
 
 
 
 
 
 
Smog situations, conditions affecting their beginning and end
 
(Annex No. 6 to Act No. 201/2012 Sb., on Air Protection)
 
 
1. Informative threshold value of SO2, NO2 and PM10 particulate matter
 
is considered exceeded if at least one measuring locality representing the level of pollution in a min. area of 100 km2 records:
- exceeded average hourly concentrations of                                   
 
pollutant
value
SO2  -  sulphur dioxide
250 mg.m-3
NO2  -  nitrogen dioxide
200 mg.m-3
over three consecutive hours, or
-  exceeded 24-hour average concentrations of
 
pollutant
value
PM10 –  particulate matter 
100 mg.m-3
over two consecutive days
with at least half of the measuring stations representing the relevant locality recording a rising trend of hourly concentrations of  PM10 over the past 6 hours.
 
2. Regulatory threshold values of  SO2, NO2 and PM10 particles
 
are considered exceeded if at least half of the measuring localities representing the level of pollution in a min. area of 100 km2 record:
 
- exceeded average hourly concentrations of                                                                    
 
pollutant
value
SO2  -  sulphur dioxide
500 mg.m-3
NO2  -  nitrogen dioxide
400 mg.m-3
over three consecutive hours, or
-  exceeded 24-hour average concentrations of
 
pollutant
value
PM10 - particulate matter 
150 mg.m-3
over three consecutive days
with at least half of the measuring stations representing the relevant locality recording a rising trend of hourly concentrations of PM10 over the past 6 hours. The PM10 particles concentration trend is assessed using a time series of sliding 12-hour average values of hourly concentrations.
 
3. Informative and alert threshold values of ground-level ozone (i.e., tropospheric ozone) O3
 
Informative threshold value is considered exceeded if the hourly concentration of ground-level ozone is above 180 mg.m-3j in at least one of the measuring stations representing the level of pollution in a locality with a min. size of  100 km2.
Alert threshold value is considered exceeded if the hourly concentration of ground-level ozone is above 240 mg.m-3 in at least one of the measuring stations representing the level of pollution in a locality with a min. size of  100 km2
 
 
4.  End of smog situations
 
A smog situation is over when none of the measuring localities representing the level of pollution in an area with a min. size of 100 km2 does not record any exceeded threshold value, with this condition lasting continuously for a minimum of 12 hours and when the  meteorological forecast (for the next 48 hours) does not expect any meteorological situation conditioning the repeated occurrence of a smog situation.
The time interval of 12 hours can be shortened down to 3 hours if the meteorological conditions can not be considered as conditioning the smog situation and if the meteorological forecast almost excludes the risk of such conditions occurring again  over the next 48 hours.
 
 

 

 

Imission monitoring (C) 2010