#TRER2110272ADecree of April 16, 2021, on the National Air Quality Monitoring System
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The decree from April 16, 2021, establishes a national air quality surveillance system in France. It outlines a comprehensive framework for monitoring various regulated pollutants, including nitrogen dioxide, particulate matter, sulfur dioxide, ozone, and several heavy metals. The law sets specific environmental objectives, evaluation thresholds, and surveillance regimes tailored to differing levels of population density and pollution exposure.
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Key Changes
- Introduction of a comprehensive list of pollutants to be monitored
- Establishment of air quality evaluation thresholds for different pollutants
- Defined procedures for the location and number of air quality monitoring points
Obligations
What this law requires
Monitor and measure nitrogen dioxide (NO2), nitrogen oxides (NOx), particulate matter (PM10 and PM2.5), sulfur dioxide (SO2), ozone (O3), carbon monoxide (CO), benzene, lead, arsenic, cadmium, nickel, and benzo[a]pyrene in all administrative surveillance zones (ZAS)
Conduct preliminary air quality evaluation in each administrative surveillance zone (ZAS) to determine appropriate surveillance regime based on concentrations measured over at least five preceding years
Use fixed measurement stations when pollutant concentrations exceed the upper evaluation threshold (SES), with optional complementary modeling or indicative measurement
Use fixed measurement stations when pollutant concentrations fall between lower (SEI) and upper (SES) evaluation thresholds, with option to combine with modeling or indicative measurement
Employ modeling or objective estimation techniques (with optional fixed or indicative measurement) when pollutant concentrations remain below the lower evaluation threshold (SEI)