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Countless bacteria can be found in land, water, humans, and animals. Most bacteria are beneficial, serving as food for larger organisms and playing critical roles in natural processes such as organic…

All facilities with air permits must submit an annual emissions inventory report to the MPCA that tracks actual emissions of major pollutants at that facility.

Carbon monoxide (CO) is a product of the incomplete combustion of carbon-based fuels—including gasoline, diesel fuel, crude oil, and wood—and other natural and synthetic products. Breathing in…

Nitrogen dioxide (NO2) is one of a group of highly reactive gases known as nitrogen oxides. NO2 reacts with other chemicals in the air to form other pollutants, such as ozone, particulate matter,…

1,4-dioxane was mainly used as a stabilizer for chlorinated solvent 1,1,1-trichloroethane. 1,4-dioxane can also be an unintended contaminant in the production of certain products, including some…

Particulate matter (PM) refers to various air particles, including dust, soot, smoke, and liquid droplets that range in size from less than 0.1 microns in diameter (smaller than a single bacterium)…

Ground-level ozone is a secondary pollutant formed through chemical reactions between nitrogen oxides (NOx) and volatile organic compounds (VOCs). Ozone can irritate the eyes, nose and throat,…