Document pmEzD9w072DYExwVXykBMw3yD

TE Of'caiIEORNIA JR RESOURCES BOARD 0! Q STREET O BOX 2813 ACRAMENTO <-a 9J812 Qsofga D#okma]ln, Governor December 26, 1990 Dear Sir or Madam: Request for Information on the Toxic Air Contaminant Program List The purpose of this letter is to request information for use in updating the Toxic Air Contaminant Identification List of Substances. The proposed list (Attachment I) Is used to assist the Air Resources Board with the selection of substances for entrance into the Toxic Air Contaminant Identification Process. In addition to requesting information for use In updating the list, we are requesting your review and comment on proposed changes to the Toxic Air Contaminant Identification List of Substances. The specific changes that we propose to make to the list, including the basis for the change, are provided below: Automatic. ....Changes Inorganic arsenic, trichloroethylene, chloroform, and vinyl chloride have been moved from Category IIA to Category I because they have been identified by the Air Resources Board as Toxic Air Contaminants (TACs). In addition, styrene has been moved from Category IIB to Category IIA because it has formally entered the identification phase of the process. Proposed Changes to Category II We are proposing to revise the definition of Category II to state that the substances in Category II are either under review for identification as TACs (IIA) or nominated for review for identification as TACs (IIB). The purpose of this change is to provide a clearer definition for Category II. The previous definition for Category II can be found on the February 1990 Toxic Air Contaminant Identification List (Attachment II). SL 062399 -2- December 26, 1990 \ Prnnnsed Changes to Cateaorvlll We are also proposing to revise Category III to state that it includes substances being evaluated for entry into Category II (IIA or IIB). The definition also states that factors considered in the evaluation include carcinogenic and noncarcinogenic health effects, emissions and exposure in California. The purpose of this revision is to provide a more accurate definition of the factors that are considered prior to entry into Category II. The definition is also clearer in conveying the fact that the substances in Category III may be associated with carcinogenic and/or noncarcinogenic health effects. For Category III we propose having two subcategories: IIIA and IIIB. Category IIIA would include Federal hazardous air pollutants as well as additional substances for which California emissions data are available. Category IIIB would only include hazardous air pollutants for which California emissions data are not available. The purpose of Including Category IIIA and IIIB is due to recent amendments to the Federal Clean Air Act. The amendments which were signed by the President in mid-November identify 189 substances as hazardous air pollutants. Because California Health and Safety Code Section 39655 states that substances identified as hazardous air pollutants shall be identified by the Air Resources Board as Toxic Air Contaminants, revisions to the list are needed. The proposed revisions to the definition for Category III will provide the necessary framework for incorporating the hazardous air pollutants into the Toxic Air Contaminant Identification List. Emissions Information for Revising Category III In order to develop the draft proposed list of substances (Attachment I), staff reviewed three air toxics emissions databases: 1) Title III, Section 313 of the Superfund Amendments and Reauthorization Act (emissions year 1989); 2) the Bay Air Quality Management District's Air Toxics Inventory (October 27, 1990); and 3) the South Coast Air Quality Management District's Air Toxics Inventory (1983 and 1984 update). Based on information in the aforementioned toxics databases, hazardous air pollutants were placed in Category IIIA (emissions in California) or Category IIIB (no California emissions data). Currently, we are surveying local air pollution control districts to obtain information on the emission of toxic pollutants reported under the Air Toxics "Hot Spots" Information and Assessment Act of 1987. We plan to also use this information in updating the Toxic Air Contaminant Identification List. SL 062400 -3- December 20, 1990 We request that you provide any information or comments to us by January 9, 1991. Please send the information to the following address: Richard Corey Special Projects Section/SSD Re: Toxic Air Contaminant Identification List California Air Resources Board P.O. Box 2815 Sacramento, CA 95812 The information received from this request will be evaluated for use in preparing a draft report for updating the list of substances. We expect the draft report to be available in mid-February. If you are interested in obtaining a copy please fill out the attached request (Attachment III) and return to Richard Corey at the noted address. If you have any questions regarding this request for information and cormnents, please call Janette Brooks, Manager of the Special Projects Section, at (916) 322-9148 or Richard Corey of her staff at (916) 327-5631. Sincerely, cc: Scientific Review Panel for Toxic Air Contaminants Attachments Peter 0. Venturing Chief Stationary Source Division ST. 062401 Attachment I Proposed Toxic Air Contaminant Identification List December 1990 \ I. Substances identified as Toxic Air Contaminants by the Air Resources Board, pursuant to the provisions of AB 1807. Asbestos Benzene Cadmium Carbon tetrachloride Chlorinated dioxins and dibenzofurans (IS species) Chloroform Chromium VI Ethylene dibrorrude Ethylene dichlonde Ethylene oxide Inorganic arsenic Methylene chloride Trichloroethylene Vinyl chloride II. Substances currently under review or nominated for review for Identification as Toxic Air Contaminants. A. Substances already in the review process. Acetaldehyde 8enzo(a)pyrene 1,3-Butadiene Diesel exhaust , Formaldehyde Nickel Perchloroethyfene Styrene B. Substances nominated for review. Acrylamide Acrylonitrile Beryllium Coke-oven emissions Dialkyinitrosammes p- Dichlorobenzene 1.1 -Dimethylhydrazine Di(2*ethylhexyl)phthalate 1,4-Dioxane Dimethyl sulfate Environmental tobacco smoke Ethyl acrylate Hexachlorobenzene Hydrazine Inorganic lead Mercury 4,4-Methylenedianiline N-Nitrosomorphollne PAHs PCBs Propylene oxide Radionudides Toluene diisocyanates 2,4,6-Trichlorophenol III. Substances which are being evaluated for entry Into Category It (IIA or IIB). Factors considered in this evaluation include carcinogenic and noncarcinogenic health effects, emissions and exposure in California. A. Substances known to be emitted in California (includes hazardous air pollutants identified in the Federal Clean Air Act known to be emitted In California). Acetone Acetonitrile Acrylamide Acrylic add Ally! chloride Aluminum Ammonia Ammonium nitrate Ammonium sultate Antimony compounds Anthracene Arsenic compounds Barium compounds Benzoyl chloride Benzyl chloride Biphenyl Bis(2-ethylhexyl) adipate Butyl acrylate Butyl benzyl phthalate Cap tan Carbaryl Carbon disulfide Carbonyl sulfide Catechol -1- Chlorinated fluorocarbons Chlorine Chlorine dioxide Chloroacetic add Chlorobenzenes Chromium compounds Cobalt compounds Copper compounds Cresols/cresylic add (isomers and mixtures) Cumene hydroperoxide Cyanide compounds SL 062402 Category IIIA Continued Cyclohexane Cumene 2,4-D (tails and esters) Diaminotoluene (mixed isomers) Dibenzofuran Dibutylphthalate Decabromodiphenyl oxide 1.2-Dichloroethane 1.3-Dichloropropene Diehlorvos Diethanolamine Dimethyl phthalate Dimethyl sulfate 4,6-Dinitro-o-cresol (and salts) Epichlorohydrin 1,2-Epoxybutane Ethyl benzene Ethyl chloride Ethylene glycol Ethylene thiourea Gasoline Glycol ethers Hexachloroethane Hydrochloric add Hydrogen fluoride Hydrogen sulfide Hydroquinone Isopropyl alcohol 4 4-lsopropylidenediphenyl Lead compounds Maleic anhydride Manganese compounds Methanol Methyl bromide Methyl chloride l^lethyl ethyl ketone Methyl hydrazine Methyl isobutyl ketone ts^ethyl methacrylate Methyl tort butyl ether ^lethylene diphenyl jdusocyanate Molybdenum trioxide N-Butyl alcohol fjaphthalene 3-Nltropropane fiitric add Nitrilotrlacetic add Parathion Pen tachlorophenol Peracetic acid Phenol 2-Phenyl phenol Phosphoric add Phthalic anhydride Propoxur Propane Propylene dichloride sec-Butyl alcohol Silver compounds Sulfuric aad Titanium tetrachloride Terephthalic acid Tert-Butyl alcohol Thiourea Toluene 1.2.4- Trichlorobenzene 1,1,1-Trichloroethane 1.2.4- Trimethylbenzene Vinyl acetate Vinylidene chloride Xylenes (o, m, p) Zinc compounds B. Substances identified as hazardous air pollutants in the Federal Clean Air Act for which California emissions information is not currently available.: Acetamide Acetophenone 2-Acetylaminofluorene Acrolein 4-Aminobi phenyl Aniline o-Anisidine Benzidine Benzotrlchlorlde BiS(2-chloroanlline) Bis(chloromethyl)ether Bromoform Calcium cyanamide Caprolactam Chloramben Chlordane 2-Chtoroaoetophenone Chlorobenzilate Chioromethyl methyl ether Chloroprene DDE Diazomethane 1.2- Dibromo-3-chloropropane 3.3- Dichlorobenzidene Dichloroethyl ether Diethyl sulfate 3.3- Dimethoxy benzidine Dimethyl aminoazobenzene 3,3`-Dimethyl benzidine Dimethyl carbamoyl chloride Dimethyl formamide 1,1 -Dimefhylhydrazine 2.4- Dinitrophenol 2.4- Dinitrotoluene 1,2-Diphenylhydrazine Ethyl carbamate Ethylene imine Ethyiidene dichloride Fine mineral libers Heptachlor Hexachlorobutadiene Hexachlorocydopentadiene Hexamethylene-1,6-diisocyanate Hexamethylphosphoramide Hexane Isophorone -Jndane Methoxychbr Methyl iodide Methyl isocyanate J^.N-Diethyl aniline Nitrobenzene 4-Nitrobipheny! 4-Nitrophenol N-Nitroeo-N-methyl urea N-Nitrodimethylamine N-Nitrosomorpholine Pentachloronitrobenzana p- Phenylenediamine Phosphine Phosphorus Phosgene 1.3-Propane suttone Polycyclic organic matter beta-Propiolactone Propionaldehyde 1.2-Propylenimine Quinoline Quinone Selenium compounds Styrene oxide 1.1.2.2-Tetrachloroethane 2.4-Toluene diamine o-Toluidme Toxaphene 2,4,5-Tnchlorophenol 1.1.2- Trichloroethane Triethylamine Tritlurahn 2.2.4-Trimethylpentane Vinyl bromide 2 U03 0&"2- X, II. III. Attachment II TOXIC AIR CONTAMINANT IDENTIFICATION LIST FEBRUARY 1990 Substances identified as toxic air contaminants by the Air Resources Board, pursuant to the provisions of A8 1807, asbestos, benzene, cadmium, carbon tetrachloride, chlorinated dioxins and dibenzofurans (15 species), chromium (VI), ethylene dibromide, ethylene dichloride, ethylene oxide, methylene chloride Substances currently under review for identification as toxic air contaminants, scheduled for review, or nominated for review but not yet scheduled. It will be necessary to develop information on exposure in California to some substances in this category before pursuing review. A. (Substances already in the review process.) acetaldehyde, benzo(a)pyrene, 1,3-butadiene, chloroform, diesel exhaust, formaldehyde, inorganic arsenic, nickel, perchloroethylene, trichloroethylene, vinyl chloride B. (Substances not yet under review.) acrylamide, acrylonitrile, beryllium, coke-oven emissions, dialkylnitrosamines, p-dichlorobenzene, 1,1-dimethyl hydrazine, di(2-ethylhexyl)phthalate, 1,4-dioxane, dimethyl sulfate, environmental tobacco smoke, ethyl acrylate, hexachlorobenzene, hydrazine, inorganic lead, mercury, 4,4'-methylenedianiline, N-nitrosomorphoKne, PAHs, PCBs, propylene oxide, radionuclides, styrene, toluene diisocyanates, 2,4,6-trichlorophenol Compounds for which health effects information is limited or not yet sufficient to support review. Substances in this category are produced and emitted to the air in quantities which might make them of concern at such time as health effects information is strong enough to support review. acrolein* allyl chloride, benzyl chloride, chlorobenzene, chlorophenols, chloroprene, cresols, glycol ethers, maleic anhydride, manganese, methyl bromide, methyl chloroform, nitrobenzene, phenol, vinylidene chloride, xylenes SL 062404 Attachment III REQUEST FORM for Toxic Air Contaminant Identification List Update To order a copy of the above report please supply your name and address below: Name of Individual and Company Address City, State, Zip Code PLEASE PRINT OR TYPE CLEARLY Return this form to: Richard Corey Special Projects Section/SSD Re: Toxic Air Contaminant Identification List California Air Resources Board P.0. Box 2815 Sacramento, CA 95812