PERMANENT RULES
CLEAN AIR AGENCY
Date of Adoption: September 9, 1999.
Purpose: To identify specific chemicals that are part of a hazardous air pollutant compound listed in Section 112(b) of the federal Clean Air Act.
Citation of Existing Rules Affected by this Order: Amended Regulation III - Appendix A.
Statutory Authority for Adoption: Chapter 70.94 RCW.
Adopted under notice filed as WSR 99-16-090 on August 4, 1999.
Number of Sections Adopted in Order to Comply with Federal Statute: New 0, Amended 0, Repealed 0; Federal Rules or Standards: New 0, Amended 0, Repealed 0; or Recently Enacted State Statutes: New 0, Amended 0, Repealed 0.
Number of Sections Adopted at Request of a Nongovernmental Entity: New 0, Amended 0, Repealed 0.
Number of Sections Adopted on the Agency's Own Initiative: New 0, Amended 0, Repealed 0.
Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 0, Amended 0, Repealed 0.
Number of Sections Adopted Using Negotiated Rule Making: New 0, Amended 0, Repealed 0; Pilot Rule Making: New 0, Amended 0, Repealed 0; or Other Alternative Rule Making: New 0, Amended 0, Repealed 0. Effective Date of Rule: November 1, 1999.
September 21, 1999
John K. Anderson
Senior Engineer
AMENDATORY SECTIONREGULATION III APPENDIX A: ACCEPTABLE SOURCE IMPACT LEVELS
COMPOUND NAME |
CAS CODE |
ASIL µg/m3 |
TYPE |
| ANTU | 86-88-4 | 1.0 | B |
| √Acetaldehyde | 75-07-0 | 0.45 | A |
| √Acetamide | 60-35-5 | TBD | B |
| Acetic acid | 64-19-7 | 83 | B |
| Acetic anhydride | 108-24-7 | 67 | B |
| Acetone | 67-64-1 | 5900 | B |
| √Acetonitrile | 75-05-8 | 220 | B |
| √Acetophenone | 98-86-2 | TBD | B |
| √2-Acetylaminofluorene | 53-96-3 | TBD | A |
| Acetylene tetrabromide | 79-27-6 | 47 | B |
| √Acrolein | 107-02-8 | 0.02 | B |
| √Acrylamide | 79-06-1 | 0.00077 | A |
| √Acrylic acid | 79-10-7 | 0.30 | B |
| √Acrylonitrile | 107-13-1 | 0.015 | A |
| Aldrin | 309-00-2 | 0.0002 | A |
| Allyl alcohol | 107-18-6 | 17 | B |
| √Allyl chloride | 107-05-1 | 1.0 | B |
| Allyl glycidyl ether (AGE) | 106-92-3 | 77 | B |
| Allyl propyl disulfide | 2179-59-1 | 40.0 | B |
| Aluminum, Al alkyls | 7429-90-5 | 6.7 | B |
| Aluminum, as Al metal dusts | 7429-90-5 | 33 | B |
| Aluminum, as Al pyro powders | 7429-90-5 | 17 | B |
| Aluminum, as Al soluble salts | 7429-90-5 | 6.7 | B |
| Aluminum, as Al welding fumes | 7429-90-5 | 17 | B |
| 2-Aminoanthraquinone | 117-79-3 | TBD | A |
| o-Aminoazotoluene | 97-56-3 | TBD | A |
| √4-Aminobiphenyl | 92-67-1 | TBD | A |
| 2-Aminopyridine | 504-29-0 | 6.3 | B |
| Amitrole | 61-82-5 | 0.06 | C |
| Ammonia | 7664-41-7 | 100 | B |
| Ammonium chloride fumes | 12125-02-9 | 33 | B |
| Ammonium perfluorooctanoate | 3825-26-1 | 0.33 | B |
| Ammonium sulfamate | 7773-06-0 | 33 | B |
| n-Amyl acetate | 628-63-7 | 1800 | B |
| sec-Amyl acetate | 626-38-0 | 2200 | B |
| √Aniline | 62-53-3 | 6.3 | A |
| √ Aniline and homologues | 62-53-3 | 1.0 | B |
| Anisidine (o-,p- isomers) | 29191-52-4 | 1.7 | B |
| √ o-Anisidine | 90-04-0 | 1.7 | C |
| √ Antimony & compounds, as Sb | 7440-36-0 | 1.7 | B |
| √ Antimony trioxide, as Sb (antimony compound) | 1309-64-4 | 1.7 | B |
| √Arsenic and inorganic arsenic compounds | 7440-38-2 | 0.00023 | A |
| √ Arsine | 7784-42-1 | 0.53 | B |
| √ Asbestos (Note: fibers/ml) | 1332-21-4 | 0.0000044 | A |
| Asphalt (petroleum) fumes | 8052-42-4 | 17 | B |
| Atrazine | 1912-24-9 | 17 | B |
| Auramine (technical grade) | 2465-27-2 | TBD | A |
| Azinphos-methyl | 86-50-0 | 0.67 | B |
| √ Aziridine (Ethylene imine) | 151-56-4 | 2.9 | B |
| Barium, soluble compounds Ba | 7440-39-3 | 1.7 | B |
| Benomyl | 17804-35-2 | 33 | B |
| √ Benzene | 71-43-2 | 0.12 | A |
| √ Benzidine and its salts | 92-87-5 | 0.000015 | A |
| √ Benzo(a)anthracene (POM) | 56-55-3 | TBD | A |
| √ Benzo(a)pyrene (POM) | 50-32-8 | 0.00048 | A |
| √Benzo(b)fluoranthene (POM) | 205-99-2 | TBD | A |
| Benzo(j)fluoranthene | 205-82-3 | TBD | A |
| √ Benzo(k)fluoranthene (POM) | 207-08-9 | TBD | A |
| √ Benzotrichloride | 98-07-7 | TBD | B |
| Benzoyl peroxide | 94-36-0 | 17 | B |
| √ Benzyl chloride | 100-44-7 | 17 | B |
| Benzyl violet 4b | 1694-09-3 | TBD | A |
| √Beryllium and its compounds | 7440-41-7 | 0.00042 | A |
| √Biphenyl | 92-52-4 | 4.3 | B |
| √Bis(2-chloroethyl)ether (Dichloroethyl ether) | 111-44-4 | 0.003 | A |
| √Bis(chloromethyl)ether | 542-88-1 | 0.000016 | A |
| √Bis(2-ethylhexyl)phthalate (DEHP; Di(2-ethylhexyl)phthalate) | 117-81-7 | 2.5 | A |
| Bismuth telluride | 1304-82-1 | 33 | B |
| Bismuth telluride Se doped | 1304-82-1 | 17 | B |
| Borates, anhydrous | 1303-96-4 | 3.3 | B |
| Borates, decahydrate | 1303-96-4 | 17 | B |
| Borates, pentahydrate | 1303-96-4 | 3.3 | B |
| Boron oxide | 1303-86-2 | 33 | B |
| Boron tribromide | 10294-33-4 | 33 | B |
| Boron trifluoride | 76737-07-2 | 9.3 | B |
| Bromacil | 314-40-9 | 33 | B |
| Bromine | 7726-95-6 | 2.2 | B |
| Bromine pentafluoride | 7789-30-2 | 2.4 | B |
| √Bromoform | 75-25-2 | 0.91 | A |
| √Bromomethane (Methyl bromide) | 74-83-9 | 5.0 | B |
| √1,3-Butadiene | 106-99-0 | 0.0036 | A |
| Butane | 106-97-8 | 6300.0 | B |
| √2-Butanone (Methyl ethyl ketone) | 78-93-3 | 1000 | B |
| √ 2-Butoxyethanol (Butyl cellosolve; Ethylene glycol monobutyl ether) | 111-76-2 | 400 | B |
| n-Butyl acetate | 123-86-4 | 2400 | B |
| sec-Butyl acetate | 105-46-4 | 3200 | B |
| tert-Butyl acetate | 540-88-5 | 3200 | B |
| Butyl acrylate | 141-32-2 | 170 | B |
| n-Butyl alcohol | 71-36-3 | 500 | B |
| sec-Butyl alcohol | 78-92-2 | 1000 | B |
| tert-Butyl alcohol | 75-65-0 | 1000 | B |
| √ tert-Butyl chromate, as CrO3 (chromium compound) | 1189-85-1 | 0.33 | B |
| n-Butyl glycidyl ether (BGE) | 2426-08-6 | 440 | B |
| n-Butyl lactate | 138-22-7 | 83 | B |
| n-Butyl mercaptan | 109-79-5 | 6.0 | B |
| n-Butylamine | 109-73-9 | 50.0 | B |
| √ 1,2-Butylene oxide (1,2-Epoxybutane) | 106-88-7 | 20 | B |
| o-sec-Butylphenol | 89-72-5 | 100 | B |
| p-tert-Butyltoluene | 98-51-1 | 200 | B |
| &bgr;-Butyrolactone | 3068-88-0 | TBD | A |
| √ Cadmium and compounds | 7440-43-9 | 0.00056 | A |
| √ Calcium cyanamide | 156-62-7 | 1.7 | B |
| Calcium hydroxide | 1305-62-0 | 17 | B |
| Calcium oxide | 1305-78-8 | 6.7 | B |
| Camphor, synthetic | 76-22-2 | 40 | B |
| √ Caprolactam, dusts | 105-60-2 | 3.3 | B |
| √ Caprolactam, vapors | 105-60-2 | 67 | B |
| Captafol | 2425-06-1 | 0.33 | B |
| √ Captan | 133-06-2 | 17 | B |
| √ Carbaryl | 63-25-2 | 17 | B |
| Carbofuran | 1563-66-2 | 0.33 | B |
| Carbon black | 1333-86-4 | 12 | B |
| √ Carbon disulfide | 75-15-0 | 100 | B |
| Carbon tetrabromide | 558-13-4 | 4.7 | B |
| √ Carbon tetrachloride | 56-23-5 | 0.067 | A |
| Carbonyl fluoride | 353-50-4 | 18 | B |
| √ Carbonyl sulfide | 463-58-1 | TBD | B |
| √Catechol | 120-80-9 | 77 | B |
| Cellosolve (2-Ethoxyethanol) | 110-80-5 | 200 | B |
| Cesium hydroxide | 21351-79-1 | 6.7 | B |
| √Chloramben | 133-90-4 | TBD | B |
| √Chlordane | 57-74-9 | 0.0027 | A |
| √Chlorinated camphene (Toxaphene) | 8001-35-2 | 0.0031 | A |
| Chlorinated diphenyl oxide (hexachlorophenyl ether) | 55720-99-5 | 1.7 | B |
| √Chlorine | 7782-50-5 | 5.0 | B |
| Chlorine dioxide | 10049-04-4 | 0.2 | B |
| Chlorine trifluoride | 7790-91-2 | 1.3 | B |
| 1-Chloro-1-nitropropane | 600-25-9 | 33 | B |
| Chloroacetaldehyde | 107-20-0 | 11 | B |
| √ Chloroacetic acid | 79-11-8 | TBD | B |
| √ a-Chloroacetophenone | 532-27-4 | 1.1 | B |
| Chloroacetyl chloride | 79-04-9 | 0.67 | B |
| o-Chlorobenylidene malononitrile | 2698-41-1 | 1.3 | B |
| √Chlorobenzene | 108-90-7 | 150 | B |
| √Chlorobenzilate | 510-15-6 | 0.2 | A |
| Chlorobromomethane | 74-97-5 | 3500 | B |
| Chlorodifluoromethane | 75-45-6 | 12000 | B |
| √Chloroethane (Ethyl chloride) | 75-00-3 | 10000 | B |
| √Chloroform | 67-66-3 | 0.043 | A |
| √Chloromethane (Methyl chloride) | 74-87-3 | 340 | B |
| √Chloromethyl methyl ether (technical grade) | 107-30-2 | TBD | A |
| Chloropentafluoroethane | 76-15-3 | 21000 | B |
| Chlorophenols | 108-43-0 | 0.18 | A |
| Chloropicrin | 76-06-2 | 2.2 | B |
| √&bgr;-Chloroprene | 126-99-8 | 120.0 | C |
| o-Chlorostyrene | 2039-87-4 | 940 | B |
| o-Chlorotoluene | 95-49-8 | 860 | B |
| Chlorpyrifos | 2921-88-2 | 0.67 | B |
| √Chromium (II) compounds, as Cr | 7440-47-3 | 1.7 | B |
| √Chromium (III) compounds, as Cr | 7440-47-3 | 1.7 | B |
| √Chromium (VI) compounds | 7440-47-3 | 0.000083 | A |
| √Chromium (metal) | 7440-47-3 | 1.7 | B |
| √Chromyl chloride (chromium compound) | 14977-61-8 | 0.53 | B |
| Clopidol | 2971-90-6 | 33 | B |
| √Cobalt as Co, metals, dusts and fumes | 7440-48-4 | 0.17 | B |
| √Cobalt carbonyl as Co (cobalt compound) | 10210-68-1 | 0.33 | B |
| √Cobalt hydrocarbonyl (cobalt compound) | 16842-03-8 | 0.33 | B |
| √Coke oven emissions | 81103* | 0.0016 | A |
| Copper as Cu, dusts and mists | 7440-50-8 | 3.3 | B |
| Copper, fumes | 7440-50-8 | 0.67 | B |
| Cotton dust, raw | 81106* | 0.67 | B |
| Creosote | 8001-58-9 | TBD | A |
| √Cresol, all isomers | 1319-77-3 | 73 | B |
| √Crotonaldehyde (POM) | 4170-30-3 | 20.0 | B |
| Crufomate | 299-86-5 | 17 | B |
| √Cumene (Isopropylbenzene) | 98-82-8 | 820 | B |
| Cupferron | 135-20-6 | TBD | A |
| Cyanamide | 420-04-2 | 6.7 | B |
| √Cyanides, as CN | 57-12-5 | 17 | B |
| Cyanogen | 460-19-5 | 67 | B |
| Cyanogen chloride | 506-77-4 | 2.5 | B |
| √1,4-Cyclohexadienedione (Quinone) | 106-51-4 | 1.5 | B |
| Cyclohexane | 110-82-7 | 3400 | B |
| Cyclohexanol | 108-93-0 | 690 | B |
| Cyclohexanone | 108-94-1 | 330 | B |
| Cyclohexene | 110-83-8 | 3400 | B |
| Cyclohexylamine | 108-91-8 | 140 | B |
| Cyclonite | 121-82-4 | 5.0 | B |
| Cyclopentadiene | 542-92-7 | 680 | B |
| Cyclopentane | 287-92-3 | 5700 | B |
| Cyhexatin | 13121-70-5 | 17 | B |
| √2,4-D salts and esters (2,4-Dichlorophenoxy acetic acid) | 94-75-7 | 33.0 | C |
| √DDE (p,p'-Dichlorodiphenyldichloroethylene) | 3547-04-4 | 0.1 | A |
| DDT (1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane) | 50-29-3 | 0.01 | A |
| Decaborane | 17702-41-9 | 0.83 | B |
| Demeton | 8065-48-3 | 0.37 | B |
| √Di(2-ethylhexyl)phthalate (Bis(2-ethylhexyl)phthalate; DEHP) | 117-81-7 | 2.5 | A |
| Diacetone alcohol | 123-42-2 | 790 | B |
| N,N-Diacetylbenzidine | 613-35-4 | TBD | A |
| 4,4'-Diaminodiphenyl ether | 101-80-4 | TBD | A |
| Diazinon | 333-41-5 | 0.33 | B |
| √Diazomethane | 334-88-3 | 1.1 | B |
| Dibenz(a,h)acridine | 226-36-8 | TBD | A |
| √Dibenz(a,h)anthracene (POM) | 53-70-3 | TBD | A |
| Dibenz(a,j)acridine | 224-42-0 | TBD | A |
| Dibenzo(a,e)pyrene | 192-65-4 | TBD | A |
| Dibenzo(a,h)pyrene | 189-64-0 | TBD | A |
| Dibenzo(a,l)pyrene | 191-30-0 | TBD | A |
| √Dibenzofurans | 132-64-9 | TBD | A |
| 1,2,7,8-Dibenzopyrene(Dibenzo(a,i)pyrene) | 189-55-9 | TBD | A |
| Diborane | 19287-45-7 | 0.37 | B |
| √1,2-Dibromo-3-chloropropane | 96-12-8 | 0.20 | B |
| Dibutyl phosphate | 107-66-4 | 29 | B |
| √Dibutyl phthalate | 84-74-2 | 17 | B |
| 2-N-Dibutylaminoethanol | 102-81-8 | 47 | B |
| Dichloroacetylene | 7572-29-4 | 1.3 | B |
| √1,4-Dichlorobenzene (p-Dichlorobenzene) | 106-46-7 | 1.5 | A |
| o-Dichlorobenzene (1,2-Dichlorobenzene) | 95-50-1 | 1000 | B |
| √3,3'-Dichlorobenzidine | 91-94-1 | 0.077 | A |
| 1,4-Dichloro-2-butene | 764-41-0 | 0.00038 | A |
| 3,3'-Dichloro-4,4'-diaminodiphenyl ether | 28434-86-8 | TBD | A |
| Dichlorodifluoromethane | 75-71-8 | 16000 | B |
| 1,3-Dichloro-5,5-dimethylhydantoin | 118-52-5 | 0.67 | B |
| √p,p'-Dichlorodiphenyldichloroethylene (DDE) | 3547-04-4 | 0.1 | A |
| √1,1-Dichloroethane (Ethylidene dichloride) | 75-34-3 | 2700 | B |
| √1,2-Dichloroethane (Ethylene dichloride) | 107-06-2 | 0.038 | A |
| √Dichloroethyl ether (Bis (2-chloroethyl)ether) | 111-44-4 | 0.003 | A |
| √1,1-Dichloroethylene (Vinylidene chloride) | 75-35-4 | 67 | B |
| 1,2-Dichloroethylene | 540-59-0 | 2600 | B |
| Dichlorofluoromethane | 75-43-4 | 130 | B |
| √Dichloromethane (Methylene chloride) | 75-09-2 | 0.56 | A |
| 1,1-Dichloro-1-nitroethane | 594-72-9 | 40 | B |
| Dichlorophenylarsine (arsenic group) | 696-28-6 | TBD | A |
| √1,2-Dichloropropane (Propylene dichloride) | 78-87-5 | 4.0 | C |
| √Dichloropropene | 542-75-6 | 20 | B |
| 2,2-Dichloropropionic acid | 75-99-0 | 19 | B |
| Dichlorotetrafluoroethane | 76-14-2 | 23000 | B |
| √Dichlorvos | 62-73-7 | 3.3 | B |
| Dicrotophos | 141-66-2 | 0.83 | B |
| Dicyclopentadiene | 77-73-6 | 100 | B |
| Dicyclopentadienyl iron | 102-54-5 | 33 | B |
| Dieldrin | 60-57-1 | 0.00022 | A |
| √Diethanolamine | 111-42-2 | 43 | B |
| Diethyl ketone | 96-22-0 | 2300 | B |
| Diethyl nitrosamine (DEN; N-Nitrosodiethylamine) | 55-18-5 | 0.000023 | A |
| Diethyl phthalate | 84-66-2 | 17 | B |
| √Diethyl sulfate | 64-67-5 | TBD | B |
| Diethylamine | 109-89-7 | 100 | B |
| Diethylaminoethanol | 100-37-8 | 170 | B |
| Diethylene triamine | 111-40-0 | 14 | B |
| 1,2-Diethylhydrazine | 1615-80-1 | TBD | A |
| Difluorodibromomethane | 75-61-6 | 2900 | B |
| Diglycidyl ether | 2238-07-5 | 1.7 | B |
| Diglycidyl resorcinol ether | 101-90-6 | TBD | A |
| Diisobutyl ketone | 108-83-8 | 480 | B |
| Diisopropylamine | 108-18-9 | 67 | B |
| √3,3'-Dimethoxybenzidine (ortol-dianisidine) | 119-90-4 | TBD | A |
| √Dimethyl aminoazobenzene | 60-11-7 | TBD | B |
| √3,3'-Dimethyl benzidine | 119-93-7 | 0.0038 | A |
| √Dimethyl carbamoyl chloride | 79-44-7 | TBD | B |
| √Dimethyl phthalate | 131-11-3 | 17 | B |
| √Dimethyl sulfate | 77-78-1 | 1.7 | C |
| Dimethylacetamide | 127-19-5 | 120 | B |
| Dimethylamine | 124-40-3 | 60 | B |
| √Dimethylaniline (Diethyl aniline) | 121-69-7 | 83 | B |
| √Dimethylformamide | 68-12-2 | 30 | B |
| √1,1-Dimethylhydrazine | 57-14-7 | 4.0 | B |
| 1,2-Dimethylhydrazine | 540-73-8 | 4.0 | C |
| √Dimethylnitrosoamine (N-Nitrosodimethylamine) | 62-75-9 | 0.000071 | A |
| Dinitolmide | 148-01-6 | 17 | B |
| √Dinitro-o-cresol | 534-52-1 | 0.67 | B |
| Dinitrobenzene, all isomers | 528-29-0 | 3.3 | B |
| √2,4-Dinitrophenol | 51-28-5 | TBD | B |
| √2,4-Dinitrotoluene | 121-14-2 | 5.0 | B |
| √1,4-Dioxane (1,4-Diethyleneoxide) | 123-91-1 | 0.032 | A |
| Dioxathion | 78-34-2 | 0.67 | B |
| √Dioxins and furans | 43110* | TBD | A |
| Diphenylamine | 122-39-4 | 33 | B |
| √1,2-Diphenyl hydrazine | 122-66-7 | 0.0045 | A |
| Dipropyl ketone | 123-19-3 | 780 | B |
| Dipropylene glycol methyl ether | 34590-94-8 | 2000 | B |
| Diquat | 85-00-7 | 1.7 | B |
| Disulfiram | 97-77-8 | 6.7 | B |
| Disulfuton | 298-04-4 | 0.33 | B |
| 2,6-Ditert. butyl-p-cresol | 128-37-0 | 33 | B |
| Diuron | 330-54-1 | 33 | B |
| Divinyl benzene | 1321-74-0 | 180 | B |
| EPN | 2104-64-5 | 1.7 | B |
| Endosulfan | 115-29-7 | 0.33 | B |
| Endrin | 72-20-8 | 0.33 | B |
| Enflurane | 13838-16-9 | 1900 | B |
| √Epichlorohydrin (1-Chloro-2,3-epoxypropane) | 106-89-8 | 0.83 | A |
| √1,2-Epoxybutane (1,2-Butylene oxide) | 106-88-7 | 20 | B |
| Ethanolamine | 141-43-5 | 25 | B |
| Ethion | 563-12-2 | 1.3 | B |
| √2-Ethoxyethanol (Cellosolve) (glycol ether) | 110-80-5 | 200 | B |
| √2-Ethoxyethyl acetate (glycol ether) | 111-15-9 | 90 | B |
| Ethyl acetate | 141-78-6 | 4800 | B |
| √Ethyl acrylate | 140-88-5 | 66 | B |
| Ethyl alcohol | 64-17-5 | 6300 | B |
| Ethyl amyl ketone | 541-85-5 | 440 | B |
| √Ethyl benzene | 100-41-4 | 1000 | B |
| Ethyl bromide | 74-96-4 | 3000 | B |
| Ethyl butyl ketone | 106-35-4 | 780 | B |
| √Ethyl carbamate (Urethan) | 51-79-6 | TBD | B |
| √Ethyl chloride (Chloroethane) | 75-00-3 | 10000 | B |
| Ethyl ether | 60-29-7 | 4000 | B |
| Ethyl formate | 109-94-4 | 1000 | B |
| Ethyl mercaptan | 75-08-1 | 4.3 | B |
| Ethyl silicate | 78-10-4 | 280 | B |
| Ethylamine | 75-04-7 | 60 | B |
| √Ethylene dichloride (1,2-Dichloroethane) | 107-06-2 | 0.038 | A |
| Ethylene chlorohydrin | 107-07-3 | 11 | B |
| Ethylene diamine | 107-15-3 | 83 | B |
| √Ethylene dibromide (1,2-Dibromoethane) | 106-93-4 | 0.0045 | A |
| √Ethylene glycol | 107-21-1 | 420 | B |
| Ethylene glycol dinitrate | 628-96-6 | 1.0 | B |
| √Ethylene imine (Aziridine) | 151-56-4 | 2.9 | B |
| √Ethylene oxide | 75-21-8 | 0.010 | A |
| √Ethylene thiourea | 96-45-7 | 1.0 | A |
| √Ethylidene dichloride (1,1-Dichloroethane) | 75-34-3 | 2700 | B |
| Ethylidene norbornene | 16219-75-3 | 83 | B |
| N-Ethylmorpholine | 100-74-3 | 77 | B |
| Fenamiphos | 22224-92-6 | 0.33 | B |
| Fensulfothion | 115-90-2 | 0.33 | B |
| Fenthion | 55-38-9 | 0.67 | B |
| Ferbam | 14484-64-1 | 33 | B |
| Ferrovanadium dust | 12604-58-9 | 3.3 | B |
| Fibrous glass dust | 81111* | 33 | B |
| √Fine mineral fibers | 81104* | 33 | B |
| Fluorides, as F | 16984-48-8 | 8.3 | B |
| Fluorine | 7782-41-4 | 5.3 | B |
| Fonofos | 944-22-9 | 0.33 | B |
| √Formaldehyde | 50-00-0 | 0.077 | A |
| Formamide | 75-12-7 | 60 | B |
| Formic acid | 64-18-6 | 31 | B |
| Furazolidone | 67-45-8 | TBD | A |
| Furfural | 98-01-1 | 26 | B |
| Furfuryl alcohol | 98-00-1 | 130 | B |
| Furium (nitrofuran group) | 43111* | TBD | A |
| Germanium tetrahydride | 7782-65-2 | 2.1 | B |
| Glutaraldehyde | 111-30-8 | 2.5 | B |
| Glyciadaldehyde | 765-34-4 | TBD | A |
| Glycidol | 556-52-5 | 250 | B |
| √Glycol ethers | 43107* | TBD | B |
| Hafnium | 7440-58-6 | 1.7 | B |
| Halothane | 151-67-7 | 1300 | B |
| √Heptachlor | 76-44-8 | 0.00077 | A |
| Heptane (n-Heptane) | 142-82-5 | 5500 | B |
| √Hexachlorobenzene | 118-74-1 | 0.0022 | A |
| √Hexachlorobutadiene | 87-68-3 | 0.70 | B |
| Hexachlorocyclohexane (Lindane) Alpha (BHC) | 319-84-6 | 1.7 | C |
| Hexachlorocyclohexane (Lindane) Beta (BHC) | 319-85-7 | 1.7 | C |
| √Hexachlorocyclohexane (Lindane) Gamma (BHC) | 58-89-9 | 0.0026 | A |
| √Hexachlorocyclopentadiene | 77-47-4 | 0.33 | B |
| 1,2,3,6,7,8-Hexachloro-dibenzo-o-dioxin (1:2 mixture) | 34465-46-8 | TBD | A |
| 1,2,3,7,8,9-Hexachloro-dibenzo-o-dioxin (1:2 mixture) | 19408-74-3 | TBD | A |
| √Hexachloroethane | 67-72-1 | 32.0 | B |
| Hexachloronaphthalene | 1335-87-1 | 0.67 | B |
| Hexachlorophenyl ether (Chlorinated diphenyl oxide) | 55720-99-5 | 1.7 | B |
| Hexafluoroacetone | 684-16-2 | 2.3 | B |
| √Hexamethylene diisocyanate | 822-06-0 | 0.11 | B |
| √Hexamethylphosphoramide | 680-31-9 | TBD | A |
| √Hexane (n-Hexane) | 110-54-3 | 200 | B |
| Hexane, other isomers | 43103* | 5900 | B |
| 2-Hexanone (Methyl butyl ketone) | 591-78-6 | 67 | B |
| √Hexone (Methyl isobutyl ketone (MIBK)) | 108-10-1 | 680 | B |
| sec-Hexyl acetate | 108-84-9 | 980 | B |
| Hexylene glycol | 107-41-5 | 400 | B |
| √Hydrazine | 302-01-2 | 0.0002 | A |
| Hydrogen bromide | 10035-10-6 | 33 | B |
| √Hydrogen chloride (Hydrochloric acid) | 7647-01-0 | 7.0 | B |
| √Hydrogen cyanide (cyanide compound) | 74-90-8 | 37 | B |
| √Hydrogen fluoride, as F (Hydrofluoric acid) | 7664-39-3 | 8.7 | B |
| Hydrogen peroxide | 7722-84-1 | 4.7 | B |
| Hydrogen selenide, as Se | 7783-07-5 | 0.53 | B |
| Hydrogen sulfide | 7783-06-4 | 0.9 | B |
| √Hydroquinone | 123-31-9 | 6.7 | B |
| 2-Hydroxypropyl acrylate | 999-61-1 | 9.3 | B |
| Indene | 95-13-6 | 160 | B |
| √Indeno(1,2,3-cd)pyrene (POM) | 193-39-5 | TBD | A |
| Indium, & compounds as In | 7440-74-6 | 0.33 | B |
| Iodine | 7553-56-2 | 3.3 | B |
| Iodoform | 75-47-8 | 33 | B |
| √Iodomethane (Methyl iodide) | 74-88-4 | 40 | B |
| Iron oxide fumes, Fe2O3 as Fe | 1309-37-1 | 17 | B |
| Iron pentacarbonyl, as Fe | 13463-40-6 | 0.83 | B |
| Iron salts, soluble as Fe | 81101* | 3.3 | B |
| Isoamyl acetate | 123-92-2 | 1700 | B |
| Isoamyl alcohol | 123-51-3 | 1200 | B |
| Isobutyl acetate | 110-19-0 | 2400 | B |
| Isobutyl alcohol | 78-83-1 | 510 | B |
| Isocytl alcohol | 26952-21-6 | 890 | B |
| √Isophorone | 78-59-1 | 93 | B |
| Isophorone diisocyanate | 4098-71-9 | 0.15 | B |
| Isopropoxyethanol | 109-59-1 | 350 | B |
| Isopropyl acetate | 108-21-4 | 3500 | B |
| Isopropyl alcohol | 67-63-0 | 3300 | B |
| Isopropyl ether | 108-20-3 | 3500 | B |
| Isopropyl glycidyl ether (IGE) | 4016-14-2 | 790 | B |
| Isopropyl oils | 43112* | TBD | A |
| Isopropylamine | 75-31-0 | 40 | B |
| N-Isopropylaniline | 768-52-5 | 37 | B |
| √Isopropylbenzene (Cumene) | 98-82-8 | 820 | B |
| Ketene | 463-51-4 | 2.9 | B |
| √Lead acetate (lead compound) | 301-04-2 | TBD | A |
| √Lead arsenate, as Pb3(AsO4)2 (arsenic and lead compound) | 3687-31-8 | 0.50 | B |
| √Lead chromate, as Cr (lead compound) | 7758-97-6 | 0.040 | B |
| √Lead compounds | 81109* | 0.5 | C |
| √Lead phosphate (lead compound) | 7446-27-7 | TBD | A |
| Liquified petroleum gas | 68476-85-7 | 6000 | B |
| √Lindane | 58-89-9 | 0.0026 | A |
| Lithium hydride | 7580-67-8 | 0.080 | B |
| Magnesium oxide fumes | 1309-48-4 | 33 | B |
| Malathion | 121-75-5 | 33 | B |
| √Maleic anhydride | 108-31-6 | 3.3 | B |
| √Manganese, dusts and compounds | 7439-96-5 | 0.40 | B |
| √Manganese, fumes | 7439-96-5 | 3.3 | B |
| √Manganese cyclopentadienyl tricarbonyl (manganese compound) | 12079-65-1 | 0.33 | B |
| √Mercury, Aryl & inorganic compounds | 7439-97-6 | 0.33 | B |
| √Mercury, as Hg Alkyl compounds | 7439-97-6 | 0.33 | B |
| √Mercury, vapors except alkyl | 7439-97-6 | 0.17 | B |
| Mesityl oxide | 141-79-7 | 200 | B |
| Methacrylic acid | 79-41-4 | 230 | B |
| Methomyl | 16752-77-5 | 8.3 | B |
| √Methoxychlor | 72-43-5 | 33 | B |
| 2-Methoxyethanol (methyl cellosolve) | 109-86-4 | 20 | B |
| √2-Methoxyethyl acetate (glycol ether) | 110-49-6 | 80 | B |
| 4-Methoxyphenol | 150-76-5 | 17 | B |
| 2-Methyl-1-nitroanthraquinone | 129-15-7 | TBD | A |
| Methyl 2-cyanoacrylate | 137-05-3 | 30 | B |
| Methyl acetate | 79-20-9 | 2000 | B |
| Methyl acetylene | 74-99-7 | 5500 | B |
| Methyl acetylene-propadiene mixture (MAPP) | 59355-75-8 | 5500 | B |
| Methyl acrylate | 96-33-3 | 120 | B |
| √Methyl alcohol (Methanol) | 67-56-1 | 870 | B |
| N-Methyl aniline | 100-61-8 | 7.3 | B |
| √2-Methyl aziridine (1,2-Propylene imine) | 75-55-8 | 16 | B |
| Methyl azoxymethyl acetate | 592-62-1 | TBD | A |
| √Methyl bromide (Bromomethane) | 74-83-9 | 5.0 | B |
| Methyl cellosolve (2-Methoxyethanol) | 109-86-4 | 20 | B |
| √Methyl chloride (Chloromethane) | 74-87-3 | 340 | B |
| √Methyl chloroform (1,1,1-Trichloroethane) | 71-55-6 | 6400 | B |
| Methyl demeton | 8022-00-2 | 1.7 | B |
| √Methyl ethyl ketone (MEK; 2-Butanone) | 78-93-3 | 1000 | B |
| Methyl ethyl ketone peroxide | 1338-23-4 | 5.0 | B |
| Methyl formate | 107-31-3 | 820 | B |
| √Methyl hydrazine | 60-34-4 | 1.2 | B |
| √Methyl iodide (Iodomethane) | 74-88-4 | 40 | B |
| Methyl isoamyl ketone | 110-12-3 | 780 | B |
| Methyl isobutyl carbinol | 108-11-2 | 350 | B |
| √Methyl isobutyl ketone (MIBK; Hexone) | 108-10-1 | 680 | B |
| √Methyl isocyanate | 624-83-9 | 0.16 | B |
| Methyl isopropyl ketone | 563-80-4 | 2300 | B |
| Methyl mercaptan | 74-93-1 | 3.3 | B |
| √Methyl methacrylate | 80-62-6 | 1400 | B |
| Methyl n-amyl ketone | 110-43-0 | 780 | B |
| Methyl n-butyl ketone | 591-78-6 | 67 | B |
| Methyl parathion | 298-00-0 | 0.67 | B |
| Methyl propyl ketone | 107-87-9 | 2300 | B |
| Methyl silicate | 681-84-5 | 20 | B |
| a-Methyl styrene | 98-83-9 | 810 | B |
| √Methyl tert-butyl ether | 1634-04-4 | 500 | B |
| Methylacrylonitrile | 126-98-7 | 9.0 | B |
| Methylal | 109-87-5 | 10000 | B |
| Methylamine | 74-89-5 | 43 | B |
| 5-Methylchrysene | 3697-24-3 | TBD | A |
| Methylcyclohexane | 108-87-2 | 5400 | B |
| Methylcyclohexanol | 25639-42-3 | 780 | B |
| o-Methylcyclohexanone | 583-60-8 | 760 | B |
| √Methylcyclopentadienyl manganese tricarbonyl (manganese compound) | 12108-13-3 | 0.67 | B |
| Methylene bis(4-cyclo-hexylisocyanate) | 5124-30-1 | 0.18 | B |
| 4,4'-Methylene bis(2-methylaniline) | 838-88-0 | TBD | A |
| √4,4'-Methylene bis(2-chloroaniline) | 101-14-4 | 0.7 | C |
| √Methylene bis(phenyl isocyanate) (Methylene diphenyl diisocyanate, MDI) | 101-68-8 | 0.2 | B |
| √Methylene chloride (Dichloromethane) | 75-09-2 | 0.56 | A |
| √4,4-Methylene dianiline | 101-77-9 | 2.7 | C |
| 4,4-Methylenedianiline dihydrochloride | 13552-44-8 | TBD | A |
| 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone | 64091-91-4 | TBD | A |
| Metribuzin | 21087-64-9 | 17 | B |
| Mevinphos | 7786-34-7 | 0.33 | B |
| Mirex | 2385-85-5 | TBD | A |
| Molybdenum, as Mo soluble compounds | 7439-98-7 | 17 | B |
| Molybdenum, insoluble compounds | 7439-98-7 | 33 | B |
| Monocrotophos | 6923-22-4 | 0.83 | B |
| Morpholine | 110-91-8 | 240 | B |
| 5-(Morpholinomethyl)-3-(amino)-2-oxazolidinone (furaltudone) | 139-91-3 | TBD | A |
| Naled | 300-76-5 | 10 | B |
| Naphtha (Rubber solvent) | 43102* | 5300 | B |
| √Naphthalene | 91-20-3 | 170 | B |
| 1-Napthylamine | 134-32-7 | TBD | A |
| √Nickel and compounds (as nickel subsulfide or nickel refinery dust) | 7440-02-2 | 0.0021 | A |
| Nicotine | 54-11-5 | 1.7 | B |
| Nitrapyrin | 1929-82-4 | 33 | B |
| Nitric acid | 7697-37-2 | 17 | B |
| Nitric oxide | 10102-43-9 | 100 | B |
| 5-Nitroacenaphthene | 602-87-9 | TBD | A |
| p-Nitroaniline | 100-01-6 | 10 | B |
| √Nitrobenzene | 98-95-3 | 1.7 | B |
| √4-Nitrobiphenyl | 92-93-3 | TBD | B |
| p-Nitrochlorobenzene | 100-00-5 | 2.0 | B |
| Nitroethane | 79-24-3 | 1000 | B |
| Nitrofen | 1836-75-5 | TBD | A |
| Nitrofurans Furazolidone | 43114* | TBD | A |
| Nitrofurazone | 59-87-0 | TBD | A |
| 1-(5-Nitrofurfurylidene)amino)-2-imidazolidinone | 555-84-9 | TBD | A |
| Nitrogen mustard N-oxide | 126-85-2 | TBD | A |
| Nitrogen mustard n-oxide hydro-chloride | 302-70-5 | TBD | A |
| Nitrogen trifluoride | 7783-54-2 | 97 | B |
| Nitroglycerin | 55-63-0 | 1.5 | B |
| Nitromethane | 75-52-5 | 830 | B |
| √4-Nitrophenol | 100-02-7 | TBD | B |
| 1-Nitropropane | 108-03-2 | 20 | B |
| √2-Nitropropane | 79-46-9 | 0.00037 | A |
| N-Nitrosodiethylamine (diethylnitrosoamine) (DEN) | 55-18-5 | 0.000023 | A |
| √N-Nitrosodimethylamine (Dimethylnitrosoamine) | 62-75-9 | 0.000071 | A |
| N-Nitrosodi-n-butylamine | 924-16-3 | 0.00063 | A |
| N-Nitrosodi-n-propylamine | 621-64-1 | TBD | A |
| N-Nitrosodiphenylamine | 86-30-6 | TBD | A |
| N-Nitrosomethylethylamine | 10595-95-6 | TBD | A |
| √N-Nitrosomorpholine | 59-89-2 | TBD | A |
| N-Nitroso-n-ethylurea (NEU) | 759-73-9 | TBD | A |
| √N-Nitroso-N-methylurea (NMU) | 684-93-5 | TBD | B |
| N-Nitroso-n-methylurethane | 615-53-2 | TBD | A |
| Nitrotoluene | 88-72-2 | 37 | B |
| N-(4-(5-Nitro-2-furyl)-2-thiazolyl)acetamide | 531-82-8 | TBD | A |
| Nonane | 111-84-2 | 3500 | B |
| Octachloronaphthalene | 2234-13-1 | 0.33 | B |
| Octane | 111-65-9 | 4700 | B |
| Oil mist, mineral | 8012-95-1 | 17 | B |
| Oil orange SS | 2646-17-5 | TBD | A |
| Osmium tetroxide as Os | 20816-12-0 | 0.0053 | B |
| Oxalic acid | 144-62-7 | 3.3 | B |
| Oxygen difluoride | 7783-41-7 | 0.37 | B |
| Panfuran S (dihydroxymethyl-furatrizine) | 794-93-4 | TBD | A |
| Parafin wax fumes | 8002-74-2 | 6.7 | B |
| Paraquat | 4685-14-7 | 4.5 | B |
| √Parathion | 56-38-2 | 0.33 | B |
| Pentaborane | 19624-22-7 | 0.043 | B |
| Pentachloronaphthalene | 1321-64-8 | 1.7 | B |
| √Pentachloronitrobenzene (quintobenzene) | 82-68-8 | 1.7 | B |
| √Pentachlorophenol | 87-86-5 | 0.33 | A |
| Pentane | 109-66-0 | 6000 | B |
| √Perchloroethylene (Tetrachloroethylene) | 127-18-4 | 1.1 | A |
| Perchloromethyl mercaptan | 594-42-3 | 2.5 | B |
| Perchloryl fluoride | 7616-94-6 | 43 | B |
| √Phenol | 108-95-2 | 63 | B |
| Phenothiazine | 92-84-2 | 1.7 | B |
| Phenoxybenzamine hydrochloride | 63-92-3 | TBD | A |
| Phenyl ether | 101-84-8 | 23 | B |
| Phenyl glycidyl ether | 122-60-1 | 2000 | B |
| Phenyl mercaptan | 108-98-5 | 7.7 | B |
| √p-Phenylenediamine | 106-50-3 | 0.33 | B |
| Phenylhydrazine | 100-63-0 | 1.5 | B |
| Phenylphosphine | 638-21-1 | 0.77 | B |
| N-Phenyl-2-napthylamine | 135-88-6 | TBD | A |
| Phorate | 298-02-2 | 0.17 | B |
| √Phosgene | 75-44-5 | 1.3 | B |
| √Phosphine | 7803-51-2 | 1.3 | B |
| Phosphoric acid | 7664-38-2 | 3.3 | B |
| √Phosphorus | 7723-14-0 | 0.33 | B |
| Phosphorus oxychloride | 10025-87-3 | 2.1 | B |
| Phosphorus pentachloride | 10026-13-8 | 2.8 | B |
| Phosphorus pentasulfide | 1314-80-3 | 3.3 | B |
| Phosphorus trichloride | 7719-12-2 | 3.7 | B |
| √Phthalic anhydride | 85-44-9 | 20 | B |
| m-Phthalodinitrile | 626-17-5 | 17 | B |
| Picloram | 1918-02-1 | 33 | B |
| Picric acid | 88-89-1 | 0.33 | B |
| Pindone | 83-26-1 | 0.033 | B |
| Piperazine dihydrochloride | 142-64-3 | 17 | B |
| Platinum, metals | 7440-06-4 | 3.3 | B |
| Platinum, soluble salts as Pt | 7440-06-4 | 0.0067 | B |
| Polyaromatic hydrocarbons (PAH) | 43116* | 0.00048 | A |
| √Polychlorinated biphenyls (PCB) | 1336-36-3 | 0.0045 | A |
| √Polycyclic Organic Matter | 43108* | TBD | A |
| Ponceau MX | 3761-53-3 | TBD | A |
| Potassium hydroxide | 1310-58-3 | 6.7 | B |
| Primary Aluminum Smelter uncontrolled roof vent PAH emissions | 81113* | 0.0013 | A |
| √1,3-Propane sultone | 1120-71-4 | TBD | A |
| Propargyl alcohol | 107-19-7 | 7.7 | B |
| √&bgr;-Propiolactone | 57-57-8 | 5.0 | B |
| √Propionaldehyde | 123-38-6 | TBD | B |
| √Propoxur | 114-26-1 | 1.7 | B |
| Proprionic acid | 79-09-4 | 100 | B |
| n-Propyl acetate | 109-60-4 | 2800 | B |
| n-Propyl alcohol | 71-23-8 | 1600 | B |
| n-Propyl nitrate | 627-13-4 | 360 | B |
| √Propylene dichloride (1,2-Dichloropropane) | 78-87-5 | 4.0 | C |
| Propylene glycol dinitrate | 6423-43-4 | 1.1 | B |
| Propylene glycol mono-methyl ether | 107-98-2 | 2000 | B |
| √Propylene oxide | 75-56-9 | 0.27 | A |
| √1,2-Propylene imine (2-Methyl aziridine) | 75-55-8 | 16 | B |
| Pyrethrum | 8003-34-7 | 1.7 | B |
| Pyridine | 110-86-1 | 53 | B |
| √Quinoline | 91-22-5 | TBD | B |
| √Quinone (1,4-Cyclohexadienedione) | 106-51-4 | 1.5 | B |
| √Quintobenzene (Pentachloronitrobenzene) | 82-68-8 | 1.7 | B |
| √Radionuclides (including radon) | 81105* | ||
| Resorcinol | 108-46-3 | 150 | B |
| Rhodium, insoluble compounds | 7440-16-6 | 3.3 | B |
| Rhodium, metals | 7440-16-6 | 3.3 | B |
| Rhodium, soluble compounds | 7440-16-6 | 0.033 | B |
| Ronnel | 299-84-3 | 33 | B |
| Rotenone | 83-79-4 | 17 | B |
| Rubber solvent (Naphtha) | 43102* | 5300 | B |
| √Selenium compounds, as Se | 7782-49-2 | 0.67 | B |
| √Selenium hexafluoride, as Se (selenium compound) | 7783-79-1 | 0.53 | B |
| Sesone | 136-78-7 | 33 | B |
| Silicon tetrahydride | 7803-62-5 | 22 | B |
| Silver, metals | 7440-22-4 | 0.33 | B |
| Silver, soluble compounds, as Ag | 7440-22-4 | 0.033 | B |
| Sodium azide | 26628-22-8 | 1.0 | B |
| Sodium bisulfite | 7631-90-5 | 17 | B |
| Sodium fluoroacetate | 62-74-8 | 0.17 | B |
| Sodium hydroxide | 1310-73-2 | 6.7 | B |
| Sodium metabisulfite | 7681-57-4 | 17 | B |
| Stibine | 7803-52-3 | 1.7 | B |
| Strychnine | 57-24-9 | 0.5 | B |
| √Styrene | 100-42-5 | 1000 | B |
| √Styrene oxide | 96-09-3 | TBD | B |
| Subtilisins | 1395-21-7 | 0.0002 | B |
| Sulfotep | 3689-24-5 | 0.67 | B |
| Sulfur hexafluoride | 2551-62-4 | 20000 | B |
| Sulfur monochloride | 10025-67-9 | 18 | B |
| Sulfur pentafluoride | 5714-22-7 | 0.33 | B |
| Sulfur tetrafluoride | 7783-60-0 | 1.5 | B |
| Sulfuric acid | 7664-93-9 | 3.3 | B |
| Sulfuryl fluoride | 2699-79-8 | 67 | B |
| Sulprofos | 35400-43-2 | 3.3 | B |
| 2,4,5-T | 93-76-5 | 33 | B |
| TEPP | 107-49-3 | 0.16 | B |
| Tantalum, metals & oxide dusts | 7440-25-7 | 17 | B |
| Tellurium & compounds as Te | 13494-80-9 | 0.33 | B |
| Tellurium hexafluoride, as Te | 7783-80-4 | 0.33 | B |
| Temephos | 3383-96-8 | 33 | B |
| Terphenyls | 26140-60-3 | 16 | B |
| P(p)(&agr;&agr;&agr;) Tetra-chlorotoluene | 5216-25-1 | TBD | A |
| √2,3,7,8-Tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) | 1746-01-6 | 0.00000003 | A |
| 1,1,2,2-Tetrachloro-1,2-difluoroethane | 76-12-0 | 14000 | B |
| 1,1,1,2-Tetrachloro-2,2-difluoroethane | 76-11-9 | 14000 | B |
| √1,1,2,2-Tetrachloroethane | 79-34-5 | 23 | B |
| √Tetrachloroethylene (Perchloroethylene) | 127-18-4 | 1.1 | A |
| Tetrachloronaphthalene | 1335-88-2 | 6.7 | B |
| √Tetraethyl lead, as Pb (lead compound) | 78-00-2 | 0.33 | B |
| Tetrahydrofuran | 109-99-9 | 2000 | B |
| √Tetramethyl lead, as Pb (lead compound) | 75-74-1 | 0.5 | B |
| Tetramethyl succinonitrile | 3333-52-6 | 9.3 | B |
| Tetranitromethane | 509-14-8 | 27 | B |
| Tetrasodium pyrophosphate | 7722-88-5 | 17 | B |
| Tetryl | 479-45-8 | 5.0 | B |
| Thallium, soluble compounds, Tl | 7440-28-0 | 0.33 | B |
| 4,4-Thiobis(6-tert, butyl-m-cresol) | 96-69-5 | 33 | B |
| 4,4'-Thiodianiline | 139-65-1 | TBD | A |
| Thioglycolic acid | 68-11-1 | 13 | B |
| Thionyl chloride | 7719-09-7 | 16 | B |
| Thirum | 137-26-8 | 3.3 | B |
| Thorium dioxide | 1314-20-1 | TBD | A |
| Tin, metals | 7440-31-5 | 6.7 | B |
| Tin, organic compounds, as Sn | 7440-31-5 | 0.33 | B |
| Tin, oxide & inorganic except SnH4 | 7440-31-5 | 6.7 | B |
| √Titanium tetrachloride | 7550-45-0 | TBD | B |
| √Toluene | 108-88-3 | 400 | B |
| √2,4-Toluene diamine (2,4-Diamino toluene) | 95-80-7 | 0.011 | A |
| √2,4-Toluene diisocyanate (TDI) | 584-84-9 | 0.12 | C |
| m-Toluidine | 108-44-1 | 29 | B |
| √o-Toluidine | 95-53-4 | 0.14 | A |
| o-Toluidine hydrochloride | 636-21-5 | 0.14 | A |
| p-Toluidine | 106-49-0 | 29 | B |
| √Toxaphene (Chlorinated camphene) | 8001-35-2 | 0.0031 | A |
| Trans-2((Dimethylamino)methylimino)-5-(2-(5-nitro-2-furyl)) vinyl-1,3,4-oxadiazole | 55738-54-0 | TBD | A |
| Tributyl phosphate | 126-73-8 | 7.3 | B |
| 1,1,2-Trichloro-1,2,2-trifluorethane | 76-13-1 | 27000 | B |
| Trichloroacetic acid | 76-03-9 | 22 | B |
| √1,2,4-Trichlorobenzene | 120-82-1 | 120 | B |
| √1,1,1-Trichloroethane (Methyl chloroform) | 71-55-6 | 6400 | B |
| √1,1,2-Trichloroethane | 79-00-5 | 180 | B |
| √Trichloroethylene | 79-01-6 | 0.59 | A |
| Trichlorofluoromethane | 75-69-4 | 19000 | B |
| Trichloronaphthalene | 1321-65-9 | 17 | B |
| √2,4,5-Trichlorophenol | 95-95-4 | TBD | B |
| √2,4,6-Trichlorophenol | 88-06-2 | 0.32 | A |
| 1,2,3-Trichloropropane | 96-18-4 | 200 | B |
| √Triethylamine | 121-44-8 | 7.0 | B |
| Trifluorobromomethane | 75-63-8 | 20000 | B |
| √Trifluralin | 1582-09-8 | TBD | B |
| Trimellitic anhydride | 552-30-7 | 0.13 | B |
| Trimethyl benzene | 2551-13-7 | 420 | B |
| Trimethyl phosphite | 121-45-9 | 33 | B |
| Trimethylamine | 75-50-3 | 80 | B |
| √2,2,4-Trimethylpentane | 540-84-1 | TBD | B |
| 2,4,6-Trinitrotoluene | 118-96-7 | 1.7 | B |
| Triorthocresyl phosphate | 78-30-8 | 0.33 | B |
| Triphenyl amine | 603-34-9 | 17 | B |
| Triphenyl phosphate | 115-86-6 | 10 | B |
| Tungsten, insoluble compounds | 7440-33-7 | 17 | B |
| Tungsten, soluble compounds | 7440-33-7 | 3.3 | B |
| Turpentine | 8006-64-2 | 1900 | B |
| Uranium, insoluble & soluble | 7440-61-1 | 0.67 | B |
| Urethan (Ethyl carbamate) | 51-79-6 | TBD | B |
| VM & P Naphtha | 8032-32-4 | 4600 | B |
| n-Valeraldehyde | 110-62-3 | 590 | B |
| Vanadium, as V2O5 | 1314-62-1 | 0.17 | B |
| √Vinyl acetate | 108-05-4 | 200 | B |
| √Vinyl bromide | 593-60-2 | 73 | B |
| √Vinyl chloride | 75-01-4 | 0.012 | A |
| Vinyl cyclohexene dioxide | 106-87-6 | 200 | B |
| Vinyl toluene | 25013-15-4 | 800 | B |
| √Vinylidine chloride (1,1-Dichloroethylene) | 75-35-4 | 67 | B |
| Warfarin | 81-81-2 | 0.33 | B |
| Welding fumes | 81108* | 17 | B |
| m-Xylene a,a'-diamine | 1477-55-0 | 0.33 | B |
| √Xylenes (m-,o-,p-isomers) | 1330-20-7 | 1500 | B |
| Xylidine | 1300-73-8 | 8.3 | B |
| Yttrium, metals and compounds as Y | 7440-65-5 | 3.3 | B |
| Zinc chloride fumes | 7646-85-7 | 3.3 | B |
| √Zinc chromates (chromium compound) | 13530-65-9 | 0.033 | B |
| Zinc oxide, fumes | 1314-13-2 | 17 | B |
| Zirconium compounds, as Zr | 7440-67-7 | 17 | B |
Acceptable Source Impact Level (ASIL) means a concentration of a toxic air contaminant in the outdoor atmosphere in any area that does not have restricted or controlled public access that is used to evaluate the air quality impacts of a single source. There are 3 types of acceptable source impact levels:
| Averaging Time | |||
| Risk-Based | Type A | carcinogens | annual arithmetic mean |
| Threshold-Based | Type B | non-carcinogens | 24-hour arithmetic mean |
| Special | Type C | carcinogens | 24-hour arithmetic mean |
*((PSAPCA assigned numbers)) numbers assigned by Puget Sound
Clean Air Agency
√ = EPA 112(b) hazardous air pollutant