Tennessee Code Title 68. Health, Safety and Environmental Protection § 68-201-102

(1) “Air contaminant” means particulate matter, dust, fumes, gas, mist, smoke, or vapor, or any combinations thereof;

(2) “Air contaminant source” means any and all sources of emission of air contaminants, whether privately or publicly owned or operated. Without limiting the generality of the definition of air contaminant source, air contaminant source includes all types of business, commercial and industrial plants, works, shops and stores, and heating and power plants and stations, buildings and other structures of all types, including multiple family residences, apartments, houses, office buildings, hotels, restaurants, schools, hospitals, churches and other institutional buildings, automobiles, trucks, tractors, buses and other motor vehicles, garages and vending and service locations and stations, railroad locomotives, ships, boats and other waterborne craft, portable fuel-burning equipment, incinerators of all types, indoor and outdoor, refuse dumps and piles, and all stack and other chimney outlets from any of the foregoing;

(3) “Air pollution” means presence in the outdoor atmosphere of one (1) or more air contaminants in sufficient quantities and of such characteristics and duration as to be injurious to human, plant or animal life or to property, or which unreasonably interfere with the enjoyment of life and property;

(4) “Board” means the air pollution control board;

(5) “Commissioner” means the commissioner of environment and conservation or the commissioner's duly authorized representative or, in the event of such person's absence or a vacancy in the office of commissioner, the deputy commissioner;

(6) “Department” means the department of environment and conservation;

(7) “Person” means any individual, partnership, copartnership, firm, company, corporation, association, joint stock company, trust, estate, political subdivision, an agency, authority, commission or department of the United States government or of the state of Tennessee government, or any other legal entity, or their legal representative, agent, or assigns;

(8) “Political subdivision” means any municipality, city, incorporated town, county, district or authority, or any portion or combination of two (2) or more thereof;

(9) “Regulations” means the standards, policies, rules and regulations promulgated by the board to attain and maintain ambient air quality standards within the intent and purpose of this part; and

(10) “Technical secretary” means the technical secretary of the air pollution control board.