For purposes of this chapter:

1.    “Air contaminant” means any solid, liquid, gas, or odorous substance, or any combination of solid, liquid, gas, or odorous substance.

2.    “Air pollution” means the presence in the outdoor atmosphere of one or more air contaminants in such quantities and duration as may be injurious to human health, welfare, or property, animal or plant life, or which unreasonably interferes with the enjoyment of life or property.

3.    “Air quality standard” means an established concentration, exposure time, or frequency of occurrence of a contaminant or multiple contaminants in the ambient air which may not be exceeded.

4.    “Ambient air” means the surrounding outside air.

5.    “Asbestos abatement” means any demolition, renovation, salvage, repair, or construction activity which involves the repair, enclosure, encapsulation, removal, handling, or disposal of more than three square feet [0.28 square meter] or three linear feet [0.91 meter] of friable asbestos material. Asbestos abatement also means any inspections, preparation of management plans, and abatement project design for both friable and nonfriable asbestos material.

6.    “Asbestos contractor” means any person that contracts to perform asbestos abatement for another.

7.    “Asbestos worker” means any individual engaged in the abatement of more than three square feet [0.28 square meter] or three linear feet [0.91 meter] of friable asbestos material, except for individuals engaged in abatement at their private residence.

8.    “Department” means the department of environmental quality.

9.    “Emission” means a release of air contaminants into the ambient air.

10.    “Emission standard” means a limitation on the release of any air contaminant into the ambient air.

11.    “Friable asbestos material” means any material containing more than one percent asbestos that hand pressure or mechanical forces expected to act on the material can crumble, pulverize, or reduce to powder when dry.

12.    “Indirect air contaminant source” means any facility, building, structure, or installation, or any combination that can reasonably be expected to cause or induce emissions of air contaminants.

13.    “Lead-based paint” means paint or other surface coatings that contain lead equal to or in excess of one milligram per square centimeter or more than one-half percent by weight.