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Minnesota Administrative Rules

7009.0080 MINNESOTA AMBIENT AIR QUALITY STANDARDS.

The following table contains the state ambient air quality standards.

Air Pollutant Level of Primary Standard Level of Secondary Standard Averaging Time Form of the Standard
Hydrogen Sulfide 0.05 ppm by volume (70.0 micrograms per cubic meter) 30-minutes 30-minute average not to be exceeded more than two times in a year
0.03 ppm by volume (42.0 micrograms per cubic meter) 30-minutes 30-minute average not to be exceeded more than two times in 5 consecutive days
Ozone 70 ppb by volume (137 micrograms per cubic meter) Same as primary standard 8-hour 3-year average of the annual fourth high daily maximum 8-hour concentration does not exceed standard
Carbon Monoxide 9 ppm by volume (10 milligrams per cubic meter) 8-hour Annual second-high 8-hour concentration does not exceed standard
35 ppm by volume (40 milligrams per cubic meter) 1-hour Annual second-high 1-hour concentration does not exceed standard
Sulfur Dioxide 30 ppb by volume (79 micrograms per cubic meter) Annual average Annual average concentration does not exceed standard
140 ppb (367 micrograms per cubic meter) 24-hour Annual second-high 24-hour concentration does not exceed standard
500 ppb by volume (1,310 micrograms per cubic meter) 3-hour Annual second-high 3-hour concentration does not exceed the standard
75 ppb (197 micrograms per cubic meter) 1-hour 3-year average of the annual 99th-percentile of daily maximum 1-hour concentrations does not exceed standard
Total Suspended Particulate 75 micrograms per cubic meter 60 micrograms per cubic meter Annual average Annual geometric mean concentration does not exceed standard
260 micrograms per cubic meter 150 micrograms per cubic meter 24-hour Annual second-high 24-hour concentration does not exceed standard
Nitrogen Dioxide 53 ppb by volume (100 micrograms per cubic meter) Same as primary standard Annual average Annual average concentration does not exceed standard
100 ppb by volume (188 micrograms per cubic meter) 1-hour 3-year average of the annual 98th-percentile of daily maximum 1-hour concentrations does not exceed standard
Lead 0.15 micrograms per cubic meter Same as primary standard Rolling 3-month average Maximum 3-month rolling average from 3 consecutive years does not exceed the standard
PM-10 150 micrograms per cubic meter Same as primary standard 24-hour 3-year average of the annual estimated exceedance days is less than or equal to 1
PM-2.5 35 micrograms per cubic meter Same as primary standard 24-hour 3-year average of the annual 98th-percentile of 24-hour concentrations does not exceed the standard
12.0 micrograms per cubic meter 15.0 micrograms per cubic meter Annual average 3-year average of the annual seasonally-
weighted average does not exceed the standard

Statutory Authority:

MS s 115.03; 116.07

History:

18 SR 614; 19 SR 550; 22 SR 1237; 23 SR 2224; 41 SR 763

Published Electronically:

January 27, 2017

700 State Office Building, 100 Rev. Dr. Martin Luther King Jr. Blvd., St. Paul, MN 55155 ♦ Phone: (651) 296-2868 ♦ TTY: 1-800-627-3529 ♦ Fax: (651) 296-0569