STANDARD Environment quality standard 1) Ambient air quality standard II standard of the (GB 3095-2012) shall be followed. See Ambient Air Quality Standard Table 1.5-1 for details. Table 1.5-1 Ambient Air Quality Standard Concentration Limit of Contaminant Time of Sampling Unit Grade II Annual average 60 SO2 24 hours average 150 1 hour average 500 Annual average 40 NO2 24 hours average 80 μg/m3 1 hour average 200 Annual average 70 PM10 24 hours average 150 Annual average 35 PM2.5 24 hours average 75 24 average 4 CO mg/m3 1 hour average 10 2) Surface water environment quality standard Grade III standards of the (GB 3095-2002) Environmental Quality Standards for Surface Water shall be followed. See Table 1.5-2 for details. Table 1.5-2 Environmental Quality Standard for Surface Water Unit: mg/L, pH excluded No. Contaminant Standard Value of Grade III 1 pH 6～9 2 BOD5≤ 4 3 Petroleum and derivatives 0.05 ≤ 4 CODMn≤ 6 5 NH3-N≤ 1.0 0.2 6 phosphorus (0.05 for lakes and ≤ reservoirs) 7 Sulfide 0.2 ≤ 8 DO≥ 5 9 Volatile phenol 0.005 ≤ 3) Acoustic environment quality standard 2 and 4a standards of the (GB 3095-2008) shall Environmental Quality Standard for Noise be followed. See Table 1.5-3 for details. Table 1.5-3 Environmental Quality Standards for Noise Period of Time Daytime (dBA) Nighttime (dBA) Category of Acoustic
STANDARD Environment quality standard 1) Ambient air quality standard II standard of the Ambient Air Quality Standard (GB 3095-2012) shall be followed. See Table 1.5-1 for details. Table 1.5-1 Ambient Air Quality Standard Contaminant Time of Sampling Concentration Limit of Grade II Unit SO2 Annual average 60 μg/m3 24 hours average 150 1 hour average 500 NO2 Annual average 40 24 hours average 80 1 hour average 200 PM10 Annual average 70 24 hours average 150 PM2.5 Annual average 35 24 hours average 75 CO 24 average 4 mg/m3 1 hour average 10 2) Surface water environment quality standard Grade III standards of the Environmental Quality Standards for Surface Water (GB 3095-2002) shall be followed. See Table 1.5-2 for details. Table 1.5-2 Environmental Quality Standard for Surface Water Unit: mg/L, pH excluded No. Contaminant Standard Value of Grade III 1 pH 6～9 2 BOD5≤ 4 3 Petroleum and derivatives ≤ 0.05 4 CODMn≤ 6 5 NH3-N≤ 1.0 6 phosphorus ≤ 0.2 (0.05 for lakes and reservoirs) 7 Sulfide ≤ 0.2 8 DO≥ 5 9 Volatile phenol ≤ 0.005 3) Acoustic environment quality standard 2 and 4a standards of the Environmental Quality Standard for Noise (GB 3095-2008) shall be followed. See Table 1.5-3 for details. Table 1.5-3 Environmental Quality Standards for Noise Period of Time Category of Acoustic Daytime (dBA) Nighttime (dBA)
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