Cal. Health and Safety Code - HSC § 39655. Section 39655.
As used in this chapter:
(a)
“Toxic air contaminant” means an air pollutant which may cause or contribute to an increase in mortality or in serious illness, or which may pose a present or potential hazard to human health. A substance that is listed as a hazardous air pollutant pursuant to subsection (b) of Section 112 of the federal act (42 U.S.C. Sec. 7412(b)) is a toxic air contaminant. A toxic air contaminant which is a pesticide shall be regulated in its pesticidal use by the Department of Pesticide Regulation pursuant to Article 1.5 (commencing with Section 14021) of Chapter 3 of Division 7 of the Food and Agricultural Code.
(b)
“Airborne toxic control measure” means either of the following:
(1)
Recommended methods, and, where appropriate, a range of methods, that reduce, avoid, or eliminate the emissions of a toxic air contaminant. Airborne toxic control measures include, but are not limited to, emission limitations, control technologies, the use of operational and maintenance conditions, closed system engineering, design, equipment, or work practice standards, and the reduction, avoidance, or elimination of emissions through process changes, substitution of materials, or other modifications.
(2)
Emission standards adopted by the Environmental Protection Agency pursuant to Section 112 of the federal act (42 U.S.C. Sec. 7412).
(c)
“Pesticide” means any economic poison as defined in Section 12753 of the Food and Agricultural Code.
(d)
“Federal act” means the Clean Air Act (42 U.S.C. 7401 et seq.), as amended by the Clean Air Act Amendments of 1990 (P.L. 101-549), and as the federal act may be further amended.
(e)
“Office” means the Office of Environmental Health Hazard Assessment.