California Code of Regulations › Title 17 - Public Health › Division 3 - Air Resources › Chapter 1 - Air Resources Board › Subchapter 7 - Toxic Air Contaminants › Section 93000 - Substances Identified as Toxic Air Contaminants

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
Each substance identified in this section has been
					 determined by the State Board to be a toxic air contaminant as defined in
					 Health and Safety Code section
					 39655.
					 If the State Board has found there to be a threshold exposure level below which
					 no significant adverse health effects are anticipated from exposure to the
					 identified substance, that level is specified as the threshold determination.
					 If the Board has found there to be no threshold exposure level below which no
					 significant adverse health effects are anticipated from exposure to the
					 identified substance, a determination of "no threshold" is specified. If the
					 Board has found that there is not sufficient available scientific evidence to
					 support the identification of a threshold exposure level, the "Threshold"
					 column specifies "None identified."
Substance
Threshold
							 Determination
Benzene
							 (C6H6)
None
							 identified
Ethylene Dibromide
							 (BrCH2CH2Br;
							 1,2-dibromoethane)
None identified
Asbestos [asbestiform varieties of serpentine
							 (chrysotile), riebeckite (crocidolite), cummingtonite-grunerite (amosite),
							 tremolite, actinolite, and anthophyllite]
None identified
Dibenzo-p-dioxins and Dibenzofurans chlorinated in
							 the 2,3,7 and 8 positions and containing 4,5,6 or 7 chlorine atoms
None
							 identified
Cadmium (metallic cadmium and cadmium
							 compounds)
None identified
Carbon Tetrachloride (CCl4;
							 tetrachloromethane)
None identified
Ethylene Oxide (1,2-epoxyethane)
None
							 identified
Methylene Chloride
							 (CH2Cl2;
							 Dichloromethane)
None identified
Trichloroethylene (CCl2CHCl;
							 Trichloroethene)
None identified
Chloroform
							 (CHCl3)
None identified
Vinyl chloride
							 (C2H3Cl;
							 Chloroethylene)
None identified
Inorganic Arsenic
None identified
Nickel (metallic nickel and inorganic nickel
							 compounds)
None identified
Substance
Threshold
							 Determination
Perchloroethylene
							 (C2Cl4;
							 Tetrachloroethylene)
None identified
Formaldehyde (HCHO)
None identified
1,3-Butadiene
							 (C4H6)
None
							 identified
Inorganic Lead
None identified
Particulate Emissions from Diesel-Fueled
							 Engines
None identified
Environmental Tobacco Smoke
None
							 identified
1. New
					 section filed 9-23-85; effective thirtieth day thereafter (Register 85, No.
					 39). For history of former subchapter 7, see Registers 84, No. 10; 83, No. 2;
					 81, No. 48; 77, No. 12; and 74, No. 47.
2. Amendment filed 1-14-86;
					 effective thirtieth day thereafter (Register 86, No. 3).
3.
					 Amendment filed 2-10-86; effective thirtieth day thereafter (Register 86, No.
					 7).
4. Amendment filed 10-9-86; effective thirtieth day thereafter
					 (Register 86, No. 43).
5. Amendment filed 11-25-86; effective
					 thirtieth day thereafter (Register 86, No. 48).
6. Amendment filed
					 2-23-87; effective thirtieth day thereafter (Register 87, No. 9).
7.
					 Amendment filed 10-8-87; operative 11-7-87 (Register 87, No. 43).
8.
					 Amendment filed 3-15-88; operative 4-14-88 (Register 88, No. 13).
9.
					 Amendment filed 7-22-88; operative 8-21-88 (Register 88, No.
					 31).
10. Amendment adding Methylene Chloride filed 6-7-90; operative
					 7-7-90 (Register 90, No. 30).
11. Amendment adding Trichloroethylene
					 filed 2-27-91; operative 3-29-91 (Register 91, No. 13).
12.
					 Amendment adding Vinyl chloride filed 5-10-91; operative 6-9-91 (Register 91,
					 No. 25).
13. Editorial correction, including removal of Inorganic
					 arsenic (Register 91, No. 25).
14. Amendment adding Chloroform filed
					 5-10-91; operative 6-9-91 (Register 91, No. 25).
15. Amendment
					 adding Inorganic Arsenic filed 6-6-91; operative 7-6-91 (Register 91, No.
					 26).
16. Change without regulatory effect amending Trichloroethylene
					 and adding Nickel filed 7-14-92 pursuant to section
					 100, title 1, California Code of
					 Regulations (Register 92, No. 29).
17. Amendment adding
					 Perchloroethylene filed 10-2-92; operative 11-1-92 (Register 92, No.
					 40).
18. Amendment adding Formaldehyde filed 3-2-93; operative
					 4-1-93 (Register 93, No. 10).
19. Amendment adding 1,3-Butadiene
					 filed 4-14-93; operative 5-14-93 (Register 93, No. 16).
20.
					 Editorial correction (Register 98, No. 16).
21. Amendment adding
					 inorganic lead filed 4-14-98; operative 5-14-98 (Register 98, No.
					 16).
22. Amendment adding "Particulate Emissions from Diesel-Fueled
					 Engines" filed 7-21-99; operative 8-20-99 (Register 99, No. 30).
23.
					 Amendment adding "Environmental Tobacco Smoke" filed 1-9-2007; operative
					 2-8-2007 (Register 2007, No. 2).
Note: Authority cited: Sections
						39600,
						39601
						and
						39662,
						Health and Safety Code. Reference: Sections
						39650,
						39660,
						39661
						and
						39662,
						Health and Safety Code.