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Table of air quality objectives

Pollutant Concentration Measured as Date to be achieved by
Benzene 16.25 µg/m3 Running annual mean 31.12.2003
  5.00 µg/m3 Annual mean 31.12.2010
1,3-Butadiene 2.25 µg/m3 Running annual mean 31.12.2003
Carbon Monoxide 10.0 mg/m3 Running 8-hour mean 31.12.2003
Lead 0.5 µg/m3 Annual Mean 31.12.2004
  0.25 µg/m3 Annual mean 31.12.2008
Nitrogen dioxide 200 µg/m3 Not to be exceeded more than 18 times a year 1-hour mean 31.12.2005
  40 µg/m3 Annual mean 31.12.2005
Particulates (PM 10) (gravimetric) 50 µg/m3 Not to be exceeded more than 35 times a year 24 hour mean 31.12.2004
  40 µg/m3 Annual mean 31.12.2004
Sulphur dioxide 350 µg/m3 Not to be excceded more than 24 times a year 1-hour mean 31.12.2004
  125 µg/m3 Not to be exceeded more than 3 times a year 24-hour mean 31.12.2004
  266 µg/m3 Not to be exceeded more than 35 times a year 15-minute mean 31.12.2005