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Table 3 Ambient air quality and noise standards

From: Airport capacity evaluation based on air traffic activities big data

  NOx CO HC PM10
Air Annual 50 μg/m3 2 mg/m3 200 μg/m3 70 μg/m3
Daily 100 μg/m3 4 mg/m3 2000 μg/m3 150 μg/m3
Hourly 250 μg/m3 10 mg/m3   
Noise Zone 1 Zone 2    
 ≤ 70 dB  ≤ 75 dB