Particles of solid or liquid matter that can remain suspended in air from a few minutes to many months depending on the particle size and weight.

The outermost layer of the Earth's atmosphere

The gaseous mass or envelope of air

The processes and activities involved in the pickup, movement and delivery of goods (agricultural, consumer, industrial products and raw materials) from producers/points of origin to consumers/point o [..]

Any facility, building, structure, or installation, or combination thereof, which generates or attracts mobile source activity that results in emissions of any pollutant (or precursor) for which there [..]

A stationary facility that emits a regulated pollutant in an amount exceeding the threshold level depending on the location of the facility and attainment with regard to air quality status. (See Sourc [..]

Includes tiny particles with an aerodynamic diameter less than or equal to a nominal 2.5 microns. This fraction of particulate matter penetrates most deeply into the lungs. For more information, see o [..]

A California state law (Health and Safety Code section 39650 et seq.) that became effective in January of 1984 and established the framework for California's toxic air contaminant

Assembly Bill 998 established the Non-Toxic Dry Cleaning Incentive Program to provide the dry cleaning industry with $10,000 grant funds to switch from systems using perchloroethylene (Perc), an ident [..]

A California program (Health and Safety Code Section 44300 et seq.) that requires certain stationary sources