Pollutant Standards Reference Federal Primary Federal Secondary New Mexico State Carbon Monoxide (CO) 8-hour average 40 CFR 50.8 9 ppm none 8.7 ppm 1-hour average 40 CFR 50.8 35 ppm none 13.1 ppm Nitrogen Dioxide (NO₂) 24-hour average 20.2.3.111 NMAC none none 0.10 ppm 1-hour average 40 CFR 50 100 ppb none none Annual arithmetic mean 40 CFR 50.11 0.053 ppm 0.053 ppm 0.05 ppm Ozone (O₃) 8-hour average 40 CFR 50.15 0.070 ppm 0.070 ppm none (Effective December 28, 2015) Sulfur Dioxide (SO₂) 1-hour average 40 CFR 50.4 0.75 ppb none none 3-hour average 40 CFR 50.5 none 0.5 ppm none 24-hour average 20.2.3.110 NMAC none none 0.10 ppm Annual (arithmetic mean) 20.2.3.110 NMAC none none 0.02 ppm Particulate Matter (PM_2.5) 24-hour average 40 CFR 50.13 35 µg/m³ 35 µg/m³ none (Effective December 18, 2006) Annual (arithmetic mean) 40 CFR 50.7 & 40 CFR 50.13 9.0 µg/m³ 9.0 µg/m³ none Particulate Matter (PM₁₀) 24-hour average 40 CFR 50.6 150 µg/m³ 150 µg/m³ none Lead (Pb) Rolling 3-month average 40 CFR 50.16 0.15µg/m³ 0.15µg/m³ none (Effective 1 year after date of area attainment designation) Hydrogen Sulfide 1-hr average 20.2.3.110 NMAC none none 0.010 ppm Total Reduced Sulfur 1/2-hour average 20.2.3.110 NMAC none none 0.003 ppm Particulate Matter (TSP) 24-hour average 20.2.3.109 NMAC none none none 7-day average 20.2.3.109 NMAC none none none 30-day average 20.2.3.109 NMAC none none none Annual geometric mean 20.2.3.109 NMAC none none none

Pollutant

Standards

Reference

Federal Primary

Federal Secondary

New Mexico State

Carbon Monoxide (CO)

8-hour average

40 CFR 50.8

9 ppm

none

8.7 ppm

1-hour average

40 CFR 50.8

35 ppm

none

13.1 ppm

Nitrogen Dioxide (NO₂)

24-hour average