WSR 00-03-082

PROPOSED RULES

PUGET SOUND

CLEAN AIR AGENCY

[ Filed January 19, 2000, 10:16 a.m. ]

Original Notice.

Exempt from preproposal statement of inquiry under RCW 70.94.141(1).

Title of Rule: Delete Regulation II, Section 3.07; and amend Regulation III, Appendix A.

Purpose: To delete Section 3.07 since there are no longer any petroleum solvent dry cleaning systems in our jurisdiction that use more than 15,000 gallons. To clarify the list of chemicals in Appendix A and their EPA hazardous air pollutant (HAP) list designations.

Other Identifying Information: Section 3.07 - Petroleum Solvent Dry Cleaning Systems. Appendix A - Acceptable Source Impact Levels.

Statutory Authority for Adoption: Chapter 70.94 RCW.

Statute Being Implemented: RCW 70.94.141.

Summary: To delete Section 3.07 of Regulation II; and to clarify the chemical list in Appendix A of Regulation III.

Reasons Supporting Proposal: Any new dry cleaning system must meet all Notice of Construction requirements, including using best available control technology so Section 3.07 of Regulation II is no longer needed. Emission reporting and annual fee payment require clarity in the chemical list in Appendix A.

Name of Agency Personnel Responsible for Drafting: John Anderson, 110 Union Street #500, Seattle, WA 98101, (206) 689-4051; Implementation: Dave Kircher, 110 Union Street #500, Seattle, WA 98101, (206) 689-4050; and Enforcement: Neal Shulman, 110 Union Street #500, Seattle, WA 98101, (206) 689-4078.

Name of Proponent: Puget Sound Clean Air Agency, governmental.

Agency Comments or Recommendations, if any, as to Statutory Language, Implementation, Enforcement, and Fiscal Matters: The state implementation plan will be updated to reflect these amendments.

Rule is not necessitated by federal law, federal or state court decision.

Explanation of Rule, its Purpose, and Anticipated Effects: For Section 3.07, Regulation II: This proposal deletes this section, since there are no longer any petroleum solvent dry cleaning systems in our jurisdiction that use more than 15,000 gallons, and any new dry cleaning system must meet all Notice of Construction requirements, including using best available control technology.

For Appendix A, Regulation III: Reporting requirements and annual fees depend on the use of Regulation III, Appendix A "Acceptable Source Impact Levels," a list of toxic air contaminants. These proposed changes clarify the list of chemicals and their EPA hazardous air pollutant (HAP) list designations including:

(1) A separate column has been added for synonyms,

(2) HAP compound references are italicized as well as placed in square brackets, and

(3) Parenthetical synonyms that were previously omitted from the alphabetical list have been added with their parentheses removed.

Proposal Changes the Following Existing Rules: This proposal deletes Section 3.07 of Regulation II; and clarifies the list of chemicals in Appendix A of Regulation III and their EPA hazardous air pollutant list designations.

No small business economic impact statement has been prepared under chapter 19.85 RCW. This agency is not subject to the small business economic impact provision of the Administrative Procedure Act.

RCW 34.05.328 does not apply to this rule adoption. Pursuant to RCW 70.94.141(1), RCW 34.05.328 does not apply to this rule adoption.

Hearing Location: PSCAA Offices, 110 Union Street, #500, Seattle, WA 98101, on March 9, 2000, at 9:00 a.m.

Assistance for Persons with Disabilities: Contact Agency Receptionist, (206) 689-4010, by March 2, 2000, TDD (800) 833-6388, or (800) 833-6385 (Braille).

Submit Written Comments to: Dennis McLerran, PSCAA, 110 Union Street, #500, Seattle, WA 98101, fax (206) 343-7522, by February 28, 2000.

Date of Intended Adoption: March 9, 2000.

January 18, 2000

David S. Kircher

Manager - Engineering

REPEALER


REGULATION II SECTION 3.07 PETROLEUM SOLVENT DRY CLEANING SYSTEMS

AMENDATORY SECTION

REGULATION III APPENDIX A

ACCEPTABLE SOURCE IMPACT LEVELS

((COMPOUND))

CHEMICAL NAME

SYNONYM 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; MEK(())) 78-93-3 1000 B
√2-Butoxyethanol [glycol ether] ((())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
√Butyl cellosolve [glycol ether] 2-Butoxyethanol; Ethylene glycol monobutyl ether 111-76-2 400 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 [glycol ether] ((())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
√1-Chloro-2,3-epoxypropane (Epichlorohydrin) 106-89-8 0.83 A
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-Dibromoethane Ethylene dibromide 106-93-4 0.0045 A
√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
√2,4-Dichlorophenoxy acetic acid 2,4-D salts and esters 94-75-7 33.0 C
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 aniline Dimethylaniline 121-69-7 83 B
Diethyl ketone 96-22-0 2300 B
((Diethyl nitrosamine)) Diethylnitrosoamine ((())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
√1,4-Diethyleneoxide 1,4-Dioxane 123-91-1 0.032 A
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
Dihydroxymethyl-furatrizine Panfuran S 794-93-4 TBD A
Diisobutyl ketone 108-83-8 480 B
Diisopropylamine 108-18-9 67 B
√3,3'-Dimethoxybenzidine (((o))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 ((())[glycol ether](())) ((())[Cellosolve](())) 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 glycol monobutyl ether [glycol ether] 2-Butoxyethanol; Butyl cellosolve 111-76-2 400 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
alpha-Hexachlorocyclohexane (((Lindane) Alpha (BHC))) alpha-Lindane 319-84-6 1.7 C
beta-Hexachlorocyclohexane (((Lindane) Beta (BHC))) beta-Lindane 319-85-7 1.7 C
gamma-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
alpha-Lindane alpha-Hexachlorocyclohexane 319-84-6 1.7 C
beta-Lindane beta-Hexachlorocyclohexane 319-85-7 1.7 C
√Lindane gamma-Hexachlorocyclohexane 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 (((m))[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
√Methanol Methyl alcohol 67-56-1 870 B
Methomyl 16752-77-5 8.3 B
√Methoxychlor 72-43-5 33 B
2-Methoxyethanol (((m))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-((5-nitrofurfurylidene) ((())amino)-2-oxazolidinone (((furaltudone))) Furaltadone 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 (((d))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
√Ortol-dianisidine 3,3'-Dimethoxybenzidine 119-90-4 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 (((d))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 (((q))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 POM 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
1,1,1-Trichloro-2,2-bis(p-chlorophenyl)ethane DDT 50-29-3 0.01 A
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
TBD = To Be Determined

*numbers assigned by Puget Sound Clean Air Agency, not Chemical Abstracts Service (CAS) registry numbers

√ = EPA 112(b) hazardous air pollutant (HAP)

[italics] = compounds that are the basis of listing the chemical as an EPA HAP

Reviser's note: The spelling error in the above section occurred in the copy filed by the agency and appears in the Register pursuant to the requirements of RCW 34.08.040.

Reviser's note: The brackets and enclosed material in the text of the above section occurred in the copy filed by the agency and appear in the Register pursuant to the requirements of RCW 34.08.040.

Washington State Code Reviser's Office