what is the polluntant one when the regulatory citation 40 cfr 50.7(a) and the type like primary?
Pollutant Type Standard Averaging Time Regulatory Citation
National Ambient Air Quality Standards
1621705
text text text text text
2-1621705-1
Standards
Standards
SO 2 Primary 0.14 ppm (365 μg / m 3 ) 24-hour 40 CFR 50.4(b)
SO 2 Primary 0.030 ppm (80 μg/m³) annual 40 CFR 50.4(a)
SO 2 Secondary 0.5 ppm (1,300 μg/m³) 3-hour 40 CFR 50.5(a)
PM 10 Primary and Secondary 150 μg/m³ 24-hour 40 CFR 50.6(a)
PM 2.5 Secondary 35 μg/m³ 24-hour 40 CFR 50.7(a)
PM 2.5 Primary 15 μg/m³ annual 40 CFR 50.7(a)
CO Primary 35 ppm (40 mg /m³) 1-hour 40 CFR 50.8(a)(2)
CO Primary 9 ppm (10mg/m³) 8-hour 40 CFR 50.8(a)(1)
O 3 Primary and Secondary 0.12 ppm (235 μg/m³) 1-hour 40 CFR 50.9(a)
O 3 Primary and Secondary 0.075 ppm (150 μg/m³) 8-hour 40 CFR 50.10(a)
NO 2 Primary and Secondary 0.053 ppm (100 μg/m³) annual 40 CFR 50.11(a) and (b)
Pb Primary and Secondary 0.15 μg/m³ Rolling 3 months 40 CFR 50.12
SELECT Pollutant FROM table WHERE Regulatory Citation = 40 cfr 50.7(a) AND Type = primary
40 cfr 50.7(a) primary