Document DZNnLXv44qVZyJnjGj89mRQd

AUSTIN if -.. l`- TEXAS AIR CONTROL BOARD +..... -=j| MEMORANDUM -......- --, .. = il TEXAS il TO: Interested parties FROM: Effects Evaluation staff DATE: June 22, 1992 (Replace the August 1, 1991 List) SUBJECT: List of Effects Screening Levels (ESLs) Attached is the latest update of the list of ESLs -curr&ntly used by the TACB Effects Evaluation staff in its evaluation of the impacts of various air contaminants. These screening levels are based on data concerning health effects, odor nuisance potential, vegetation effects, or corrosion effects. The ESLs on the list are based on health effects unless followed by "(o)", "(v)", or "(c)" (for odor nuisance, vegetation damage, or corrosion of materials, respec tively) . If the ESL of an air contaminant is based on odor threshold and is less than the annual average ESL based on health (denoted by an asterisk in the annual average column), it is not necessary to evaluate the annual average impacts of such chemical. Remember that these screening levels are just "tools" the Health Effects Section uses to evaluate the impacts of air pollutant emissions. They are not ambient air standards. If predicted or measured airborne levels of a certain chemical do not exceed its screening level, we do not expect any adverse health or welfare effects. If ambient levels of air contain inants exceed the screening levels this does not necessarily mean there is a problem. It is just an indication that further review will be required. This list incorporates some effects screening levels which have been derived by the Effects Evaluation staff. These are compounds for which there are no currently published occupational exposure standards or guidelines and are followed by a "D". Please note that some compounds' ESL have been changed or newly derived since the August 1, 1991 ESLs List. These compounds and the relative ESLs are printed in boldface. The 30-minute ESLs also can be used for the l-hour ESLs. The 24-hour average ESLs can be obtained by multiplying a ratio of 0.4 to the relative 30-minute ESLs. If you cannot find a listing for a particular chemical, this does not mean that no health effects evaluation is required. Also note that these screening levels are subject to change without notice. To find out if a screening level has been established for a chemical or to be sure of the most current screening level, please check with the Effects Evaluation staff. Before you call us, please check synonyms & Chemical Abstract Service Registry numbers (CAS No.) to make sure the chemical you are interested in is not listed. cc: Manuel Agiurre, JAW, MW, LCS, NG, LCH, RJT, JSL, File, Board. ASARCO ELP 0001049 FOOTNOTES * 30-minute or l-hour average ESL less than annual average ESL ** Disaster potential chemical D Health ESLs derived by Effects Evaluation staff E ESLs based on Effects Evaluation staff's justification M Health ESLs based on the 1989 Maximum Concentration Values in the Workplace (MAKs) from the Deutsche Forschungsgemeinschaft (DFG), Federal Republic of Germany N Health ESLs based on the 1989 Recommended Exposure Limits (RELs) from the U.S. National Institute for Occupational Safety and Health (NIOSH) 0 Health ESLs based on the 1989 amended Permissible Exposure Limits (PELS) from the U.S. Occupational Safety and Health Administration (OSHA) T Health ESLs based on the 1991-92 Chemical Substances Threshold Limit Values (TLVs) from the American Conference of Governmental Industrial Hygienists (ACGIH) (PM) denotes particulate matter form, the respirable fraction of PM consists of those particles with particle sizes that are equal to or below the median cut point of 4.0 /im. (c) denotes that annual ESL is set to protect against corrosion damage (o)r denotes that 30-minute or 1-hour ESL is based on odor threshold (v) denotes that 30-minute or l-hour ESL is based on effects on vegetation ASARCO ELP 0001050 EFFECTS SCREENING LEVELS FOR VARIOUS CHEMICALS (June 22, 1992) CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 75-07-0 60-35-5 64-19-7 108-24-7 21287-97-3 67-64-1 75-86-5 75-05-8 74-86-2 540-59-0 79-27-6 50-78-2 260-94-6 107-02-8 79-06-1 79-10-7 141-32-2 140-88-5 96-33-3 107-13-1 281-23-2 107-13-1 309-00-2 68239-06-5 107-18-6 107-11-9 107-05-1 106-92-3 2179-59-1 7539-12-0 acetaldehyde acetamide 90 (50) 320 (132) * 32 (13) (o) D acetic acid 250'(100) 25 (10) N, T, 0 acetic anhydride 200 (50) 20 (5) T, 0 acetoacetoxyethyl methacrylate 2000 (230) 200 (23) D acetone 5900 (2500) 590 (250) N acetone cyanohydrin 40 (10) 4 (1) N acetonitrile 340 (200) 34 (20) N acetylene 26620 2660 N (25000) (2500) acetylene dichloride 7930 (2000) 790(200) N,T,0,M (1,2-dichloroethylene) acetylene tetrabromide 140 (10) 14 (1) T, 0 acetylsalicylic acid (aspirin) 50 (PM) 5 N, T, 0 acridine (dibenzo[b,e]pyridine) 0.5 .05 E [also see coal tar pitch volatiles] acrolein** 2.3 (1) .23 (.1) T acrylamide .3 .03 N,T,0 acrylic acid 60 (20) 6 (2) N,T acrylic acid, n-butyl ester 550 (100) 55 (10) M acrylic acid, ethyl ester 200 (50) 20 (5) M acrylic acid, methyl ester 180 (50) 18 (5) M acrylonitrile 43 (20) 4 (2) T, 0 adamantane (sym-tricyclodecane) 3850 (692) 385 (69) D adiponitrile 180 (40) 18 (4) N Aldrin 2.5- (PM) .25 N, T,0,M aliphatic diisocyanate .25 .025 D (see dimeryl diisocyanate) alkanes not otherwise specified iooo ppb 100 pbb D alkyl phenol, c-12 860 86 D alkyl phenol, C-20 1150 115 D alkyl phenol ethoxylate 1000 100 D (see nonylphenyl ethoxylate) allyl alcohol 48 (20) 5 (2) N, T, 0, M allylamine 12 (5) 1 (.5) D allyl chloride** allyl glycidyl ether (AGE) 30 (10) 225 (50) 3 (1) 23 (5) N,T,0 N,T,0 allyl propyl disulfide 120 (20) 12 (2) N, T,0,M allyl succinic anhydride 6 (1) .6 (.1) D 1 ASARCO ELP 0001051 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/mJ(ppb) 30-minute annual or 1-hour 1344-28-1 7429-90-5 141-43-5 111-41-1 123-00-2 504-29-0 462-08-8 504-24-5 61-82-5 7664-41-7 12125-02-9 3825-26-1 7773-06-0 7783-20-2 628-63-7 628-38-0 110-53-2 109-67-1 110-66-7 628-80-8 994-05-8 80-46-6 872-10-6 62-53-3 29191-52-4 20-12-7 7440-36-0 1309-64-4 86-88-4 7440-37-1 64742-95-6 64742-94-5 64742-94-5 7440-38-2 7784-42-1 alumina aluminum, metal and oxide pyro powders, welding fumes alkyls and soluble salts amino-3-aminomethyl-3,3,5trimethylcyclohexane aminoethanol (ethanolamine) aminoethylethanolamine (hydroxyethyl ethylenediamine) aminopropyl morpholine, 4aminopyridine, 2aminopyridine,13aminopyridine, 4amino-1,2,4-triazole, 3(Amitrole) ammonia** ammonium chloride fume ammonium perfluoroctanate ammonium sulfamate (Ammate) ammonium sulfate amyl acetate, namyl acetate, secamyl bromide amylene, l- (1-pentene) amyl mercaptan amyl methyl ether, namyl methyl ether, tert- (TAME) amylphenol, p-tert-, vapor amyl sulfide aniline anisidine, o-, p- isomers anthracene antimony, as Sb antimony trioxide ANTU (a-naphthylthiourea) argon Aromatic 100 (see trimethyl benzene) Aromatic 150 Aromatic 200 arsenic and compounds arsine see aluminum oxide 50 5 50 5 20 2 375 (50) 38 (5) N,0 N,T,0 N,T,0 D 75 (30) 640 (150) 7.5 (3) N,T,0,M 64 (15) D 1650(280) 20 (5) 15 (3.8) 2.5 (.7) 2 165(28) D 2 (.5) N,T,0,M 1.5 (.38) D .25 (.07) D .2 N,T,0,M 170 (250) 17 (25) N,T 100 10 N,T,0 1 .1 T 50 (resp) 5 N,0 50 (PM) 27 (5) (O) 11 (2) (o) 5 * * D 250 (40) 90 (30) 25 (4) * D 0.1 (.02) * (o) 670(160)(o) 270(65) D 670(160)(O) 270(65) D 700 (100) 70 (10) D 35 (PM) 3.5 D .2 (.3) ' * (o) 76 (20) 7.6 (2) N,T,0 5 (1) .5 (.1) N,T,0,M 0.5 0.05 E 5 (PM) .5 N,T,0,M 5 (PM) .5 T 3 .3 N,T,0,M simple asphyxiant 1230 (250) 123 (25) D 2560 (455) 4200 (620) 5 (organic) .1 (inorg) 1.6 (.5) 256 (46) 420 (62) .5 .01 .16 (.05) D D 0, E 0,E T,0 2 ASARCO ELP 0001052 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Aig/m3(ppb) 30-minute annual or l-hour 17068-78-9 8052-42-4 1912-24-9 86-50-0 asbestos (fibers/cc) (Mg/m3) asphalt, vapors particulate fraction Atrazine Azinphos-methyl .001 .03 350 (135) 50 50 2 .0001 N .003 35 (13.,5) D 5T 5 N,T,0 .2 N,T,0,M BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB 7440-39-3 7727-43-7 68359-37-5 17804-35-2 98-87-3 71-43-2 95-14-7 8032-32-4 205-99-2 100-47-0 50-32-8 95-14-7 98-88-4 94-36-0 140-14-4 100-51-6 100-44-7 98-87-3 7440-41-7 121-46-0 82657-04-3 92-52-4 111-44-4 542-88-1 1304-82-1 80-05-7 barium & compounds, as Ba 5 .5 N,T,0,M barium sulfate (PM) 50 (resp) 5 N, 0 Baythroid 50 (PM) 5 D (cyfluthrin, also see pyrethrum) Beech wood dust 10 1 N,T Benomyl (PM) 50 (resp) 5 0 benzal chloride 20 (3) 2 (.3) D benzene 30 (10) benzene azimide (benzotriazole) 100 (20) 3 (1) 10 (2) 0 D benzine 3500 (875) 350 (88) N (light petroleum distillate; VM&P naphtha) benzo[b]fluoranthene .5 .05 E (see coal tar pitch volatiles) benzonitrile 505 (120) 51 (12) D benzo[a]pyrene .03 (PM) .003 D benzotriazole (benzene azimide) 100 (20) benzoyl chloride 60 (10) 10 (2) 6 (1) D D benzoyl peroxide 50 5 N,T,0,M benzyl acetate 600 (100) 60 (10) D benzyl alcohol 500 (110) 50 (11) D benzyl chloride 50 (10) 5 (1) T, 0 benzyl dichloride 20 (3) 2 (.3) D (benzal chloride) beryllium and compounds see TACB Reg III bicycloheptadiene 2000 200 D Bifenthrin 25 2.5 D biphenyl 2.3 (o) 1.3 T bis(chloroethy1) ether 290 (50) 29 (5) N,T,0,M (dichloroethyl ether) bis(chloromethy1) ether .05 (,01) .005 (. 001) D bismuth telluride 100 (PM) 10 N,T resp. fraction 50 5 N selenium-doped 50 5 N, T, 0 bisphenol A 800 (vapor) 80 D 40 (PM) 4 D ASARCO ELP 0001053 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Atg/m3(ppb) 30-minute annual or 1-hour 68475-96-0 1330-43-4 11130-12-4 1303-96-4 10043-35-3 1303-86-2 10294-33-4 7637-07-2 99-30-9 314-40-9 7726-95-6 7789-30-2 109-70-6 74-97-5 74-96-4 75-25-2 106-99-0 106-97-8 109-79-5 78-93-3 111-76-2 123-86-4 105-4.6-4 540-88-5 141-32-2 71-36-3 78-92-2 75-65-0 109-73-9 13952-84-6 75-64-9 85-68-7 128-37-0 109-69-3 1189-85-1 584-03-2 107-88-0 110-63-4 Black Grit (Boiler Slag) 50 (PM) 5 0 borates, tetra. sodium salts: anhydrous pentahydrate decahydrate 10 1 N,T 10 1 N,T 50 5 N,T boric acid 10 1 D boron oxide boron tribromide 50 (resp) 100~'<10) 5 10 (1) N, 0 N,T,0 boron trifluoride see TACB Reg III Botran 75W 100 10 D (2/6-dichloro-4-nitroaniline) Bromacil 100 (10) 10 (1) N,T,0 bromine** bromine pentafluoride 6.6 (1) .66(.1) see TACB Reg III N,T,0 bromo-3-chloropropane, 1- .5 (.075) .05 (.0075) D bromochloromethane 1680 (O) 1060 T (chlorobromomethane) (320) (200) bromoethane 8900 (2000) 890 (200) M bromoform 52 (5) 5 (.5) N,T,0 butadiene, 1,3- 110 (50) 11 (5) E butane 19000 (8000) 1900 (800) N,T,0 butanethiol (butyl mercaptan) 1.8 (5)(o) 1.8 (.5) N, T, O butanone (methyl ethyl ketone) 3900 (O) 590 T,M (1320) (200) butoxyethanol 1210 (250) 121 (25) N,T, 0 (ethylene glycol monobutyl ether) butyl acetate, n- 1850 (391)(o) 710 (150) N,T,0 butyl acetate, sec- 9500 (2000) 950 (200) NTOM butyl acetate, tert- 19 (4) * o -OSHA butyl acrylate 183 (35)(O) 52 (10) NTOM butyl alcohol, n- 1220 (407)(O) 150 (50) N,T,0 butyl alcohol, sec- 3000 (1000) 300 (100) NTOM butyl alcohol, tert- 3000 (1000) 300 (100) NTOM butylamine, nbutylamine, sec- 150 (50) 150 (50) 15 (5) N, t,o,m 15 (5) M butylamine, tert- 12 (4) 1.2 (.4) D butyl benzyl phthalate (BBP) 50 (PM) 5 D butylated hydroxytoluene (BHT) 100 10 N,T,0 butyl chloride, n- 3335(886)(o) 440 (117) D butyl chromate, tert- .1 .01 E (as Cr03) butylene glycol, 1,2- 2100 (570) 210 (57) D butylene glycol, 1,3- 4400 (1195) 440 (120) D butylene glycol, 1,4- 500 (136) 50 (14) D 4 ASARCO ELP 0001054 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour 513-85-9 106-88-7 2426-08-6 7397-62-8 75-91-2 111-36-4 138-22-7 109-79-5 97-88-1 614-45-9 99-71-8 89-72-5 98-54-4 98-51-1 98-19-1 123-72-8 616-45-5 96-48-0 109-74-0 butylene glycol, 2,3butylene oxide butyl glycidyl ether (BGE) butyl glycolate butyl hydroperoxide, tertbutyl isocyanate butyl lactate butyl mercaptan, nbutyl methacrylate butyl peroxybenzoate, tertbutylphenol, p-secbutylphenol, o-secbutylphenol, p-tertbutyltoluene, p-tertbutyltoluene diamine, tertbutyl-m-xylene, tert(see Aromatics ISO) butyraldehyde butyrolactam, gamma{2-pyrrolidone) butyrolactone, gammabutyronitrile 1400 (380) 206 (70)(O) 266 (50) 270 (50) 35 (10) 9 (2.2) 300 (50) 1.8 (.5) 6970''(1200) 15 (2) 130 (21) 310 (50) 5 (.8) 610 (100) 70 (10) 3300 (500) 140 (38) D 50 (17) D 27 (5) N 27 (5) D 3.5 (1) D .9 (.22) D 30 (5) N,T,0 1.8 (.5) (O) 697 (120) D 1.5 (.2) D 13 (2.1) 0 31 (5) N, T, 0 .5 (.08) M 61 (10) N,rT,0,M 7 (1) D 330 (50) D 14 (5) (o) 70 * 7 D 2800 (800) 280 (80) 220 (80) 22 (8) D N CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC 7440-43-9 7778-44-1 1317-65-3 13765-19-0 156-62-7 1305-62-0 1305-78-8 1344-95-2 7778-18-9 5794-03-6 76-22-2 105-60-2 105-60-2 2425-06-1 133-06-2 63-25-2 1563-66-2 cadmium & compounds, as Cd calcium arsenate (as As) calcium carbonate (marble) calcium chromate (as Cr) calcium cyanamide calcium hydroxide calcium oxide calcium silicate, synthetic calcium sulfate (gypsum) camphene (see camphor) camphor, synthetic caprolactam dust caprolactam vapor Captafol Captan Carbary1 carbofuran .1 .1 100 (total) 50 (resp) .1 5 50 20 100 100 (total) 50 (resp) .01 .01 10 5 .01 .5 5 2 10 10 5 N, E 0, E N,T N,0 E N,T,0 N, T, 0 N,T T N,T N, 0 20 10 10 (2.2) 1 50 50 1 2 N, 0 1 N,T,0 1 ( 22) N .1 N, T, 0 5 N,T,0 5 N,T,0,M .1 N,T,0 5 ASARCO ELP 0001055 CAS No SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 1333-86-4 124-38-9 75-15-0 630-08-0 558-13-4 56-23-5 75-44-5 353-50-4 463-58-1 120-80-9 9004-34-6 21351-79-1 2917-26-2 57-74-9 143-50-0 8001-35-2 31242-93-0 7782-50-5 10049-04-4 7790-91-2 107-20-0 78-95-5 532-27-4 79-04-9 108-4.2-9 106-47-8 95-51-2 108-90-7 104-83-6 2698-41-1 74-97-5 1126-99-8 59-50-7 75-68-3 74-45-6 53469-21-9 11097-69-1 carbon black, in presence of PAHs carbon dioxide carbon disulfide** carbon monoxide carbon tetrabromide carbon tetrachloride carbonyl chloride** (phosgene) carbonyl fluoride carbonyl sulfide catechol cellulose cesium hydroxide cetylmercaptan Chlordane chlordecone (Kepone) chlorinated camphene (Toxaphene) chlorinated diphenyl oxide chlorine** chlorine dioxide chlorine trifluoride chloroacetaldehyde chloroacetone chloroacetophenone chloroacetyl chloride chloroaniline, mchloroaniline, pchloroaniline, ochlorobenzene chlorobenzyl chloride chlorobenzylidene malono- nitrile, ochlorobromomethane chloro-l,3-butadiene, 2(G-chloroprene) chlorocresol chlorodifluoroethane (Freon 142B) chlorodifluoromethane (Freon 22) chlorodiphenyl,42% Cl2 (PCBs) chlorodiphenyl,54% Cl2 (PCBs) 35 3.5 N,T,0 1 .1 N 90000 9000 N,0,M (50000) (5000) 30 (10) 3 (1) N must meet NAAQS 14 (1) 1.4 (.1) N,T,0 126 (20) 13 (2) N,0 4 il) .4 (.1) N,T,0,M 54 (20) 5 (2) N,T,0 8 (3) .8 (.3) D 230 (50) 23 (5) N,T,0 100 (total) 10 N, T 50 (resp) 5 N, 0 20 2 N,T,0 53 (5) 5 (.5) N 5 .5 N,T,0,M .01 .001 N 5 .5 T,0,M 5 .5 N,T,0,M 15 (5) 1.5 (.5) N,T,0,M 2.8 (1) .3 (.1) N,T,0,M see TACB Reg III 32 (10) 3 (1) N,T,0,M 38 (10) 4 (1) T 3.2 (.5) .3 (.05) N, T, 0 2.3 (.5) .23 (.05) N,T,0 31 (6) 3.1 (.6) D 53 (10) 5.3 (1) D 53 (10) 5.3 (1) D 460 (100) 46 (10) T 26 (4) 2.6 (.4) D 4 (.5) .4 (.05) N,T,0 10600(2000) 1060 (200) 36 (10) 3.6 (1) 20 (o) 61700 (18750) 18000 (5000) .1 .1 :k 6170 (1875) 1800 (500) .01 .01 T N D M E E 6 ASARCO ELP 0001056 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL /ig/m3(ppb) 30-minute annual or 1-hour 106-89-8 75-00-3 107-07-3 75-01-4 67-66-3 542-88-1 107-30-2 600-25-9 76-15-3 95-57-8 108-43-0 106-47-9 76-06-2 126-99-8 598-78-7 2039-87-4 1897-45-6 95-49-8 1929-82-4 2921-88-2 7738-94-5 7440-47-3 7440-47-3 1333-82-0 14977-61-8 218-01-9 2971-90-6 8007-45-2 65996-92-1 8030-30-6 8001-58-9 chloro-2,3-epoxypropane 3.8 (1) (epichlorohydrin) chloroethane 500(190) chloroethanol, 2- 33 (10) (ethylene chlorohydrin) chloroethylene (vinyl chloride) 130 (50) chloroform 100 (20) chloroglycerin 50 (11) chloromethyl ether, bis- .047'(.01) chloromethyl methyl ether .5 chloronitropropane 100 (20) chloropentafluoroethane 63200 (10000) chlorophenol,o- 2(.36)(o) chlorophenol, m- 19(3.6)(o) chlorophenol, p- 300(57) chloropicrin 7 (1) JJ-chloroprene 36 (10) chloropropionic acid 4.4 (1) chlorostyrene, o- 2850 (500) Chlorothalonil 15 chlorotoluene, o- 235 (O) chlorotrifluoromethylphenoxy- 300 toluene 2-chloro-6-(trichloromethyl)- 50 (resp) pyridine (Nitrapyrin) Chlorpyrifos (Dursban) 2 chromic acid (H2Cr04) .1 & chromate (Cr04'2) chromium (VI) compounds, as Cr . 1 chromium (II) & (III) cpds, 1 chromium metal, as Cr chromium trioxide (Cr03) , as Cr .1 chromyl chloride .1 chrysene .5 Clopidol 100 (PM) 50 (resp) coal dust, respirable (<5% silica) 20 (>5% silica)(see quartz) 1 coal tar [also 65996-89-6] 1 coal tar distillate 3500 (875) coal tar naphtha 3500 (875) (petroleum distillates, naphtha) coal tar oil (creosote) 1 .38 (.1) T 50(19) E 3.3 (1) N,iT,0,M 13 (5) T 10 (2) 0 5 (1) D .0047 (.001) T .05 D 10 (2) N,T,0 6320 N, T, 0 (1000) * k 30(5.7) D .7 (.1) N, T,0,M 3.6 (1) N 0.44 (.1) T 285 (50) N, T, 0 1.5 * D 30 D 50 .2 N,T,0 .01 E .01 E .1 E .01 .01 .05 10 5 E E M N,T 2 .1 .1 350 350 (88) (88) T, 0 T, 0 N N N .1 N 7 ASARCO ELP 0001057 ss si-a 3 3 o o o o CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 65996-93-2 7440-48-4 10210-68-1 16842-03-8 7440-50-8 7440-50-8 8001-58-9 1319-77-3 4170-30-3 299-86-5 98-82-8 80-15-9 420-04-2 143-33-9 151-50-8 460-19-5 506-68-3 506-77-4 204-62-2 1724-39-6 830-13-7 291-64-5 110-82-7 108-93-0 108-94-1 110-83-8 108-91-8 3173-53-3 1569-69-3 121-82-4 29965-97-7 292-64-8 542-92-7 287-92-3 120-92-3 68359-37-5 13121-70-5 99-87-6 66841-24-5 coal tar pitch volatiles .5 .05 E (assume the fraction of benzo[a]pyrene not exceed 10% of total PPAH) cobalt, metal dust & fume .5 .05 N,T cobalt carbonyl 1 .1 N, T cobalt hydrocarbonyl 1 .1 N, T coke oven emissions 1.5 .15 copper fume 1 .1 N,0 copper dusts & mists 10.. 1 N, T, 0 cotton dust, raw 2 .2 creosote (coal tar oil) 1 .1 cresol (cresylic acid), 5(1.1)(O) 10 (2 3) mixed isomers [also any isomers: 108-39-4; 95-48-4; 106-44-5] crotonaldehyde 60 (20) 6 (2) N, T, 0 Cruformate 50 5 N, T, 0 cumene 500(100)(o) 245 (50) cumene hydroperoxide 25 (4.4) 2.5 (.44) D cyanamide 20 2 N, T, 0 cyanide, potassium 50 5 T,0,M cyanide, sodium 50 5 T,0,M cyanogen 210 (100) 21 (10) N,rT,0,M cyanogen bromide 2.5 (.6) .25 (.06) D cyanogen chloride .6 (.3) .06 (.03) N cyclododecane 5150 (750) 515 (75) D cyclododecanol 9800 (1300) 980 (130) D cyclododecanone 1600 (150) 160 (15) D cycloheptane 3400 (850) 340 (85) D cyclohexane 1435 (O) 340 cyclohexanol 613 (153)(o) 200 (50) cyclohexanone 481 (120)(O) 100 (25) cyclohexene 600 (178)(o) * cyclohexylamine 80 (20) 8 (2) E cyclohexyl isocyanate 20 (4) 2 (,.4) D cyclohexylmercaptan 24 (5) 2.4 (.5) N cyclonite 15 1.5 N,T,0 cyclooctadiene 2000 (470) 200 (47) D cyclooctane 3500 (750) 350 (75) D cyclopentadiene 2030 (750) 203 (75) N,T,0,M cyclopentane cyclopentanone 3400 (1190) 340 (119) 1700 (500) 170 (50) D D cyfluthrin (Baythroid) 50(PM) 5 D Cyhexatin 50 5 N,T,0 cymene, p- (p-methyl cumene) 2745 (500) 275 (50) D Cypermethrin (see pyrethrum) 50 5* D 8 ASARCO ELP 0001058 O 5s S O CAS No SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD 39515-41-8 94-75-7 50-29-3 75-99-0 17702-41-9 143-10-2 Danitol (Fenpropathrin) (see Pyrethrum) 2,4-D (Dichlorophenoxyacetic acid) DDT (Dichlorodiphenyltrichloroethane) Dalapon (2,2-dichloropropionic acid decaborane decyl mercaptan 50(PM) 100 1 58 (10) 2.5 (.5) 36 (5) 5D 10 N,T,0,M .1 N 5.8 (1) N,T,0,M .25 (.05) N,T,0 3.6 (.5) N 8022-00-2 8065-48-3 123-42-2 56-18-8 107-15-3 61790-53-2 333-41-5 334-88-3 260-94-6 19287-45-7 300-76-5 96-12-8 106-93-4 102-81-8 105-76-0 2528-36-1 107-66-4 84-74-2 7572-29-4 95-82-9 95-76-1 541-73-1 95-50-1 106-46-7 28577-62-0 760-23-6 7415-31-8 demethon-methyl 50 (5) Demeton 1 (.1) diacetone alcohol 1328 (279) diaminodipropylamine, 3,3'- 60 (11) (dipropylene triamine) diaminoethane, 1,2- 250 (100) (ethylenediamine) diatomaceous earth 60 (si1ica-amorphous) Diazinon 1 diazomethane 3.4 (2) dibenzo[b,ejpyridine (acridine) .5 [also see coal tar pitch volatiles] diborane 1.1 (1) dibrom 30(PM) dibromochloropropane (DBCP) .1 (.01) dibromoethane, 1,2- 3.8 (.5) (ethylene dibromide) dibutylaminoethanol 140 (20) dibutyl maleate (DBM) 2600 (280) dibutyl phenyl phosphate 35 (3) dibutyl phosphate 86 (10) dibutyl phthalate 50 (PM) dichloroacetylene 3.9 (1) dichloroaniline, 2,5- 210(32) dichloroaniline, 3,4- 80(12) dichlorobenzene, m- 2500 (415) dichlorobenzene, o- 1500 (250) dichlorobenzene, p- 600 (100) dichlorobutadiene 165 dichloro-i-butene, 3,4- 135 (26) dichloro-2-butene, 1,3- 56 (11) [also 926-57-8] 5 (.5) .1 (.01) 238 (50) 6 (1) M N,T,0 (o) D 25 (10) N,T,0,M 6N .1 .34 (.2) .05 N,T,0 N,T,0 E .11 (.1) N,T,0,M 3M .01 (.001) 0 .38 (.05) N 14 (2) N,T,0 260 (28) D 3.5 (.3) T 8.6 (1) T 5 N,T,0 .39 (.1) N,T,0 21(3.2) D 8(1.2) D 250 (42) D 150 (25) T 60 (10) T 17 D 14 (2.6) D 5.6 (1.1) D 9 ASARCO ELP 0001059 CAS NO. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3 (ppb) 30-minute annual or 1-hour 764-41-0 75-71-8 118-52-5 75-34-3 107-06-2 75-35-4 540-59-0 111-44-4 75-43-4 96-23-1 542-88-1 75-09-2 676-97-1 99-30-9 594-72-9 120-83-2 87-65-0 78-87-5 542-7-5-6 709-98-8 75-99-0 76-14-2 62-73-7 141-66-2 5124-30-1 77-73-6 102-54-5 60-57-1 68334-30-5 111-42-2 dichloro-2-butene, 1,4dichlorodifluoromethane (Freon 12) dichlorodimethylhydantoin dichloroethane, 1,1dichloroethane, 1,2(ethylene dichloride) dichloroethylene, 1,1(vinylidene chloride) dichloroethylene, 1,2dichloroethyl ether dichlorofluoromethane (Freon 21) dichlorohydrin dichloromethyl ether (bis(chloromethyl) ether] dichloromethane (methylene chloride) dichloromethyl phosphine oxide dichloro-4-nitroaniline, 2,6(Botran 75W) dichloronitrobenzene, all isomers dichloro-l-nitroethane, 1,1dichlorophenol, 2,4dichlorophenol, 2,6dichloropropane, 1,2(propylene dichloride) dichloropropene, 1,3dichloropropionanilide (Propanil) dichloropropionic acid, 2,2- (Dalapon) dichlorotetrafluoroethane (Freon 114) Dichlorvos (DDVP) Dicrotophos dicyclohexylmethane-4,4'- diisocyanate dicyclopentadiene dicyclopentadienyl iron Dieldrin diesel fuel combustion products diethanolamine 6 (1.2) 49500 (10000) 2 4000 (1000) 40 (10) 40 (10) 7930 (2000) 290 (50) 420 (100) 130 (25) .05 260 (75) 3 100 9 120 (20) 525 20 1150(0) (250) 45 (10) 15 (PH) 58 (10) 69900 (10000) 9 (1) 2.5 .55 31 (6) 50 (resp) 2.5 90 (vapor) 10 (PM) 130 (30) .6 (.12) D 4950 N,T,0,M (1000) .2 N,T,0 400 (100) NTOM 4 (1) N,0 4 (1) 0 790 (200) NTOM 29 (5) N,T,0,M 42 (10) N,T,0,M 13 (2.5) .005 D D 26 (7.5) E .3 D 10 D .9 D 12 (2) 53 * 350 (75) 4.5 (1) 1.5 N,T,0 D (O) T,0,M N,T,0 D 5.8 (1) N,T,0,M 6990 N,T,0,M (1000) .9 (.1) N,T,0,M .25 N,T,0 .055 D 27 (5) 5 .25 9 1 13 (3) (O) N,0 N,T,0,M D D N,T,0 10 ASARCO ELP 0001060 QQ OQ O OQ OQQS O DSQ CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 109-89-7 100-37-8 25340-17-4 111-90-0 111-40-0 3710-84-7 60-29-7 117-81-7 96-22-0 2524-04-1 84-66-2 64-67-5 105-55-5 75-61-6 2238-07-5 929-06-6 123-31-9 110-96-3 108-82-7 108-83-8 84-69-5 110-97-4 108-18-9 68239-06-5 110-71-4 109-87-5 127-19-5 124-40-3 1300-73-8 108-01-0 1704-62-7 121-69-7 1330-20-7 75-83-2 diethylamine 179 (60)(o) 30 (10) diethylaminoethano-l 55 (11) (o) 48 (10) diethyl benzene 2500 (455) 250 (46) diethylene glycol monoethyl 1500 (208) 150 (21) ether (ethyl Carbitol) diethylene triamine 42 (10) 4.2 (1) N,T, diethylhydroxylamine 400 40 diethyl ether (ethyl ether) 930(300)(o) * di(2-ethylhexyl)phthalate 5O'' 5 N/T, (di-sec-octyl phthalate) diethyl ketone 7050 (2000) 705 (200) N,T, diethyl phosphorochloro- 70 7 dithioate (ethyl PCT) diethyl phthalate 50 5 N,T, diethyl sulfate 25 2.5 diethylthiourea 50 (PH) 5 difluorodibromomethane 8580 858 N,T,0, (Freon 12B2) (1000) (100) diglycidyl ether (DGE)** 5.3 (1) 0.53 (.1) N,T, diglycolamine 380 38 dihydroxybenzene (hydroquinone) 20 2 T, O, diisobutylamine 125 13 diisobutylcarbinol 188 (o) 100 (D) (2,6-dimethyl-4-heptanol) diisobutyl ketone 639 (110) 145 (25) (O diisobutyl phthalate 50(PM) 5 (see dibutyl phthalate) diisopropanolamine (DIPA) 460 46 diisopropylamine 210 (50) 21 (5) N,T, dimeryl diisocyanate .25 .025 dimethoxyethane, 1,2- 220 (60) 22 (6) (ethylene glycol dimethyl ether, EGDME) dimethoxymethane (methylal) 31100 3110 N,T,0,M (10000) (1000) dimethyl acetamide 360 (100) 36 (10) N,T,OfM dimethylamine 92 (50) 9.2 (5) T dimethylaminobenzene (xylidine) 25 (5) 2.5 (.5) N dimethylaminoethanol (deanol) 55 (o) 50 D dimethylaminoethoxyethanol 130(24) 13(2.4) D dimethylaniline, N,N- 64 (32)(O) 10 (5) N dimethylbenzene (xylene) 3700 (850)(O) 435 (100) N,T,0 dimethyl butane 3500 (1000) 350 (100) N (see hexane isomers) dimethylcyclohexylamine, N,N- 100 10 D 11 Q QOQQ ASARCO ELP 0001061 CAS NO. SUBSTANCE EFFECTS SCREENING LEVEL M g/m3(ppb) 30-minute annual or l-hour 300-76-5 108-01-0 115-10-6 598-56-1 68-12-2 108-83-8 108-82-7 57-14-7 131-11-3 3179-63-3 77-78-1 75-18-3 67-68-5 148-01-6 528-29-0 534-52-1 25550-58-7 25321-14-6 101-67-7 123-91-1 78-34-2 1746-01-6 646-06-0 122-39-4 101-68-8 142-84-7 34590-94-8 56-18-8 111-43-3 123-19-3 231-36-7 85-00-7 6385-62-2 dimethyl-1,2-dibromo-2,2- 30 dichloroethyl phosphate (Naled) 3 N ,T,0,M dimethylethanolamme (dimethylaminoethanol) 55 (o) 50 D dimethyl ether dimethyl ethyl amine, dimethy1formamide dimethyl-4-heptanone, (diisobutyl ketone) N,N2,6- 19100 (10000) 750 (250) 300 (100) 640. (p) (110) 1910 (1000) M 75 (25) M 30 (10) N, T, 0 145 N,T,0 (25) dimethyl-4-heptanol, 2,6(diisobutylcarbinol) 188 (o) 100 D dimethylhydrazine, 1,1- .25 (,1) .025 (.01) T dimethyl-3-hydroxythiophene,2,4 - 100 dimethyl oxazolidinone 2500 dimethylphthalate 50 (PM) 10 250 5 D D N,T,0 dimethyl propanolamine dimethyl sulfate dimethyl sulfide 750 5.2 (1) 3 (o) 75 .52 (.1) * D N,T,0 dimethyl sulfoxide (DMSO) 140 14 D dinitolmide 50 (PM) 5 N, T, 0 (3,5-dintro-o-toulamide; zoalene) dinitrobenzene (all isomers) 10 (1.5) 1 (.15) N, T, 0 [also 99-65-0; 100-25-4] dinitro-o-cresol dinitrophenol 2 (PM) 3 (PM) .2 N ,t,o,m .3 D dinitrotoluene 15 (PM) 1.5 N,T,0 dioctyldiphenylamine dioxane, 1,4- 100 900 (250) 10 90 (25) D T, 0 Dioxathion (Delnav) dioxins, polychlorinated- 2 (PM) -- .2 N, T, 0 9.2x10'* E, NY dibenzo-p- (as 2,3,7,8-tetrachlorodibenzo-p-dioxin, TCDD) dioxolane, 1,3- 520 (172) 52 (17) D diphenylamine 100 (PM) 10 N,T,0 diphenylmethane-4,4'- .5 (.05) .05 (.005) N.T diisocyanate (methylene bisphenyl isocyanate) dipropylamine 200 (48) 20 (5) D dipropylene glycol methyl ether 3000 (500) 300 (50) M dipropylene triamine 60 (11) 6 (1) D dipropyl ether (propyl ether) 2500 (600) 250 (60) D dipropyl ketone Diquat 2330 (500) 233 (50) N,T,0 5 (total) .5 N,T,0 Diquat dibromide 1 (resp) .1 same as Diquat T Diquat dibromide monohydrate same as Diquat 12 ASARCO ELP 0001062 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 117-81-7 97-77-8 298-04-4 25231-47-4 128-37-0 330-54-1 1321-74-0 25377-73-5 112-55-0 27193-86-8 di-sec-octyl phthalate 50 (PM) Disulfiram 20 (PM) Disulfoton 1 (PM) di-tert-amyl phenol 700 di-tert-butyl-p-cresol, 2,6- 100 (butylated hydroxytoluene, BHT) Diuron 100 (PM) divinyl benzene 530 (100) dodecenylsuccinic anhydride 40 (316) (see tetrapropenylsuccinic anhydride) dodecylmercaptan 41 (5) dodecylpheno1 1200 (110) 5 N, T, 0 2 N /T,0,M .1 N,T,0 70 D 10 N, T, 0 10 53 (10) 4 ( .36) N, T, 0 N,T,0 D 4 ( 5) 120 (ID N D EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE 1302-74-5 115-29-7 72-20-8 13838-16-9 1395-21-7 106-89-8 2104-64-5 75-56-9 556-52-5 74-84---0 75-08-1 141-43-5 100-40-3 563-12-2 110-80-5 111-15-9 14631-45-9 141-78-6 140-88-5 64-17-5 emery, respirable fraction 50 (PM) 5 O Endosulfan 1- . 1 N, T, 0 Endrin 1 .1 N,T,0 enflurane 151 (20) 15 (2) N enzymes (Subtilisins) .0006 .00006 N, T, 0 epichlorohydrin 3.8 (1) .38 (.1) T EPN (O-ethyl,O-p-nitrophenyl 5 .5 N,T,0,M phenylphosphonothioate) epoxypropane, 1,2- 250 (100) 25 (10) E (propylene oxide) epoxy-l-propanol, 2,3- 760 (250) 76 (25) N,T,0 (glycidol) ethane simple asphyxiant ethanethiol** (ethyl mercaptan) .8 (o) * ethanolamine 75 (30) 7.5 (3) N,T,0,M ethenylcyclohexene, 4- 40 (1) 4 (.1) T (4-vinyleyclohexene) Ethion 4 .4 N, T, 0 ethoxyethanol, 2- 180 (50) 18 (5) T (ethylene glycol monoethyl ether) ethoxyethanol acetate, 2- 270 (50) 27 (5) T (ethylene glycol monoethyl ether acetate) ethoxypropionitrile, Si- 2000 200 D ethyl acetate 14400 1440 N,T,0,M (4000) (400) ethyl acrolein ethyl acrylate ethyl alcohol 60 (18) 5 (1.25) 18800 6 (1.8) D * () . 1880 N,T,0,M (10000) (1000) 13 ASARCO ELP 0001063 CAS No. 75-04-7 541-85-5 103-69-5 100-41-4 74-96-4 628-81-9 106-35-4 75-00-3 541-41-3 107-12-0 74-85-1 107-07-3 110-61-2 107-15-3 106-93-4 107-06-2 107-21-1 111-55-7 110-71-4 628-96-6 111-76-2 112-07-2 110-80-5 111-15-9 112-25-4 109-59-1 109-86-4 110-49-6 122-99-6 SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour ethylamine 180 (100) ethyl amyl ketone 1310 (250) ethylaniline 20 ethyl benzene 2000 (460)(o) ethyl benzene hydroperoxide 4350 ethyl bromide 220 (50) ethyl butyl ether 2340 (560) ethyl butyl ketone 2340 (500) ethyl chloride 500 (189) ethyl chlorocarbonate 5 (ethyl chloroformate) ethyl cyanide (propionitrile) 140 (60) ethylene 1170 ethylene bisdithiocarbamates 50(PM) (EBDCs, see ethylene thiourea) ethylene chlorohydrin 33 (10) ethylene cyanide 200 (60) (succinonitrile) ethylenediamine 250 (100) ethylene dibromide 3.8 (.5) ethylene dichloride 40 (10) ethylene glycol 1270 (500) ethylene glycol diacetate 555 (O) ethylene glycol dimethyl ether 220 (60) (1,2-methoxyethane, EGDME) ethylene glycol dinitrate 1 ethylene glycol monobutyl 1210 (250) ether (butyl Cellosolve) ethylene glycol monobutyl 1310 (200) ether acetate ethylene glycol monoethyl 180 (50) ether (ethyl Cellosolve) ethylene glycol monoethyl 270 (50) ether acetate ethylene glycol monohexyl ether 2100(350) (2-hexyloxyethanol) ethylene glycol monoiso 1060 (250) propyl ether ethylene glycol monomethyl 160 (50) ether (methyl Cellosolve) ethylene glycol monomethyl 240 (50) ether acetate ethylene glycol monophenyl 170(30) ehter (phenyl cellosolve) 18 (10) N,T,0,M 131 (25) N,T,0 2D 434 (100) 435 D 22 (5) T 234 (56) D 234 (50) N,T,0 50 (19) E .5 D 14 (6) 117 5 N (v) D 3.3 (1) N,T,0,M 20 (6) N 25 (10) N,T,0,M .38 (.05) N 4 (1) N,O 127 (50) T,0 85 D 22 (6) D . 1 N, O 121 (25) N,T,0 131 (20) M 18 (5) T 27 (5) T 210(35) D 106 (25) T,0 16 (5) T,M 24 (5) T,M 17(3) D 14 ASARCOELP 0001064 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL /ig/m3(ppb) 30-minute annual or l-hour 2807-30-9 75-21-8 96-45-7 151-56-4 60-29-7 763-69-9 109-94-4 94-96-2 123-05-7 75-34-3 16219-75-3 97-64-3 75-08-1 97-63-2 18328-90-0 100-74-3 645-62-5 78-10-4 352-93-2 620-14-4 622-96-8 611-14-3 ethylene glycol monopropyl 1500 (250) 150 (25) D ether ethylene oxide 18 (10) 1.8 (1) T, 0 ethylene thiourea (ETU) 50(PM) 5 D ethylenimine* * ethyl ether ethy1-3-ethoxypropionate 8.8 (5) 927 (306) 400 (67) .88 (.5) * 40 (7) T (o) D ethyl formate 2-ethyl hexanediol-l,3 3030 (1000) 303 (100) NTOM 500--'--'- 50 D ethylhexyl aldehyde 1400 (267) 140 (27) D ethylidene chloride (1,1-dichloroethane) 4000 (1000) 400 (100) N,0,M ethylidene norbornene 70 (14)(O) 25 (5) ethyl lactate ethyl mercaptan** ethyl methacrylate 120(25) .8 (o) 32 (7)(o) 12(2.5) * * D ethyl-2-methylallylamine ethylmorpholine, N- 50 240 (50) 5 24 (5) D N,T,0 ethy-3-propyl acrolein 150 (29) 15 (3) D (2-ethyl hexenal) ethyl silicate ethyl sulfide 850 (100) 16 (o) 85 (10) * N,T,0 ethyltoluene, m- 1250 (250) 125 (25) D (l-methyl-3-ethylbenzene, see trimethyl benzene) ethyltoluene, p- 1250 (250) 125 (25) D (l-methyl-4-ethylbenzene, see trimethyl benzene) ethyltoluene, o- 1250 (250) 125 (25) D (l-methyl-2-ethylbenzene, see trimethyl benzene) FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF 22224-92-6 39515-41-8 115-90-2 55-38-9 51630-58-1 14484-64-1 12604-58-9 7782-41-4 406-90-6 944-22-9 Fenamiphos Fenpropathrin (Danitol) (see Pyrethrum) Fensulfothion (Dasanit) Fenthion Fenvalerate (see pyrethrum) Ferbam ferrovanadium dust fibrous glass dust, fluorides, as F fluorine fluroxene Fonophos 1 50 (PM) .1 5 N, T, 0 D 1 . 1 N,T,0 2 .2 T,0,M 50 5 D 50 5 0 10 1 N,T,0,M 50 5 N see TACB Reg III 2 (1) .2 (.1) N,0,M 103 (20) 10 (2) N 1 .1 N, T, 0 15 ASARCO ELP 0001065 CAS NO. SUBSTANCE EFFECTS SCREENING LEVEL /ig/m3(ppb) 30-minute annual or 1-hour 50-00-0 75-12-7 64-18-6 109-94-4 107-31-3 794-93-4 98-01-1 98-00-0 formaldehyde formaraide formic acid formic acid, ethyl iester formic acid, methyl ester Freon TMS furans, chlorinated dibenzofuratone furfural furfuryl alcohol 15* (12) 1.5* (1.2) E * under review 180 (100) 18 (10) N,T 94 (50) 9.4 (5) N,T,0,M 3000 (1000) 300 (100) M 2500 (1000) 250 (100) M 28300 -- 2830 lxl O'* D D 5CT'"W 5 D 79 (20) 8 (2) T,0 400 (100) 40 (10) N,T,0 GGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG 1303-00-0 8006-61-9 7782-65-2 111-30-8 gallium arsenide, as As 0.1 . 01 0 gasoline 3500 (1180) 350 (118) E (also need to consider benzene content) germanium tetrahydride 6.3 (2) .6 (.2) N,T,O glutaraldehyde 8.2 (2) .8 (.2) N,T,0,M 56-81-5 556-52-5 106-91-2 107-16-4 298-12-4 107-22-2 7782-42-5 86-50-0 7778-18-9 glycerin mist glycidol glycidyl methacrylate glycolonitrile glycoxylic acid glyoxal grain dust graphite, natural & synthetic guthion (azinphos-methyl) gypsum (calcium sulfate) 50 760 (250) 580 (100) 50 (20) 75 70 40 20 2 50 50 76 (25) N,T,0 58 (10) D 5 (2) N 7.5 D 7D 4 N, T 2T .2 N,T,0,M 5 N, 0 HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH 7440-58-6 151-67-7 7440-59-7 526-73-8 76-44-8 142-82-5 110-43-0 hafnium halothane helium hemimellitene (1/2/3-trimethylbenzene) Heptachlor and Heptachlor epoxide heptane heptanone, 2(methyl n-amyl ketone) 5 .5 N ,t,o,m 162 (20) 16.2 (2) N simple asphyxiant 1250 (250) 125 (25) N,T,0 .5 .05 T 3500 (850) 350 (85) 94 (O) * N 16 ASARCO ELP 0001066 o s o a a o evo a a a s a e* a o -^ a o s seh o o o o a s CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 106-35-4 111-14-8 111-70-6 1639-09-4 118-74-1 87-68-3 58-89-9 77-47-4 67-72-1 1335-87-1 1888-71-7 2917-26-2 648-16-2 124-09-4 822-06-0 28182-81-2 629-11-8 111-49-9 100-97-0 110-54-3 124-09-4 591-78-6 108-1-0-1 108-84-9 111-25-1 107-41-5 111-31-9 302-01-2 7782-79-8 1333-74-0 61788-32-7 10035-10-6 7647-01-0 74-90-8 7664-39-3 10034-85-2 7722-84-1 7783-07-5 7783-06-4 heptanone, 3(ethyl butyl ketone) heptanoic acid heptyl alcohol heptylmercaptan, nhexachlorobenzene (HCB) hexachlorobutadiene Hexachlorocyclohexane, gamma(Lindane) hexachlorocyclopentadiene hexachloroethane hexachloronaphthalene hexachloropropene hexadecyl mercaptan (cetylmercaptan) hexafluoroacetone hexamethylene diamine hexamethylene diisocyanate(HDI) hexylmenthylene diisocyanate polymer hexamethylene glycol hexamethyleneimine hexamethylenetetramine hexane, nhexane, other isomers hexanediamine, 1,6hexanone, 2(methyl n-butyl ketone) hexone (methyl isobutyl ketone) hexyl acetate, sechexyl bromide hexylene glycol hexylmercaptan, Nhydrazine hydrazoic acid hydrogen hydrogenated terphenyls hydrogen bromide** hydrogen chloride** hydrogen cyanide hydrogen fluoride** hydrogen iodide hydrogen peroxide hydrogen selenide (as Se) hydrogen sulfide** 2340 (500) 234 (50) N,T,0 108 (o) 1900 (o) 1 (O) .25 2.1 (.2) 5 53 270 * D .025 T .21 (.02) N,T,0 .5 N,T,0,M 1.1 (.1) 97 (10) 2 60 53 (5) .11 (.01) N,T,0 10 (1) N,T,0,M .2 N,T,0 6D 5 (.5) N 7 (1) 3.2 (O) .34 (.05) 50(PM) .7 (.1) N,T,0 * .03 (.005) 5 5Z D 750 100 (25) 170 1760 (500) 3500 (1000) 23 (5) 40 (10) 75 D 10 (2.5) D 17 D 176(50) N,T,0.M 350 (100) N 2.3 (.5) T 4 (1) N 2050 (500) 205 (50) N,T,0 12 (2) * (O) 135 (20) 14 (2) D 1210 (250) 121 (25) N,T,0 27 (5) 2.7 (.5) N 0.13 (.1) .013 (.01) T 2.7 (1) .27 (.1) M simple asphyxiant 50 (5) 5 (.5) N,T,0 100 (30) 10 (3) N,T,0 75 (50) .1 (C) N,T,0 50 (47) 5 (4.7) N,0 see TACB Regf III 150 (30) 15 (3) D 14 (10) 1.4 (1) N,T,0,M 1.6 (.5) .16 (.05) NTOM see TACB Reg' II 17 ASARCO ELP 0001067 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Atg/m3(ppb) 30-minute annual or 1-hour 123-31-9 150-76-5 118-93-4 99-93-4 111-41-1 868-77-9 123-42-2 597-31-9 999-61-1 hydroquinone 20 hydroquinone monomethyl ether 50(PM) (4-methoxyphenol; p-hydroxyanisole) hydroxyacetophenone, 2- 1250 hydroxyacetophenone, 4- 2500 hydroxyacetophenone oxime, 4- 1250 hydroxyethyl ethylenediamine 640 (150) hydroxyethyl methacrylate, 2- 3170 (595) 4-hydroxy-4-methyl-2- ..........1330 "(280)(o) pentanone (diacetone alcohol) hydroxypivaldehyde 1800 hydroxypropyl acrylate 28 (5) 2 N,T,0,M 5 N, T, O 125 250 125 64 (15) 317 (60) 240 (50) D D D D D 180 D 2.8 (.5) N,T,0 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII 15687-27-1 56-18-8 95-13-6 7740-74-6 7553-56-2 75-47-8 36734-19-7 1309-37-1 13463-40-6 118-48-9 123-9-2-2 123-51-3 124-68-5 110-19-0 78-83-1 78-81-9 97-85-8 123-17-1 97-86-9 78-84-2 78-82-0 71121-36-3 540-84-1 26952-21-6 78-59-1 4098-71-9 78-96-6 Ibuprofen iminobispropylamine, 3,3'(dipropylene triamine) indene indium & compounds (as In) iodine iodoform Iprodione iron oxide (fume) iron pentacarbonyl iron salts, soluble (as Fe) isatoic anhydride isoamyl acetate isoamyl alcohol isobutanolamine isobutyl acetate isobutyl alcohol isobutyl amine isobutyl isobutyrate (IBIB) isobutyl heptyl ketone isobutyl methacrylate isobutyraldehyde isobutyronitrile isocyanobenzotrifluoride isooctane (methyl heptane) isooctyl alcohol isophorone isophorone diisocyanate isopropanolamine (MIPA) 40 60 (11) 4 6 (1) D D 70 (15)(o) 1 10 (1) 6 (o) 100 50 8 (1) 10 100 (PM) 1330 (O) 151 (o) 400 630 (O) 1520 (500) 150 (50) 6000 (980) 3750 (500) 1900 (330) 138 (O) 220 (80) . 38 3500(750) 2660 (500) 230 (40) 0.45 (.05) 200 45 (10) N,T,0 .1 N,T,0 1 (.1) N,T,0,M * 10 D 5 N,T,M .8 (.01) N,T,0,M 1 N,T,0 10 D 525 * N,T,0 40 * 152 (50) 15 (5) 600 (98) 375 (50) 190 (33) * D D N,T,0 M D D D 22 (8) N .038 D 350(75) D 266 (50) N,T,0 23 (4) N,0 .045 (.005) N,T 20 D 18 ASARCO ELP 000106ft CAS No 109-59-1 108-21-4 67-63-0 75-31-0 768-52-5 108-20-3 4016-14-2 590-86-3 SUBSTANCE EFFECTS SCREENING LEVEL /xg/m3(ppb) 30-minute annual or l-hour isopropoxyethanol 1060 (250) (ethylene glycol monoisopropyl ether) isopropyl acetate 3755(900)(O) isopropyl alcohol 7856 (O) isopropylamine 120 (50) isopropylaniline, N- 110 (20) isopropyl ether 70 (O) isopropyl glycidyl ether (IGE) 2380 (500) isovaleraldehyde 2500"(710) 106 (25) T, 0 1040 (250) 1,0 980 12 (5) 11 (2) * T,OfM N,T,0 238 (50) N,T,0,M 250 (71) D jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj Jeffamine D-230 Jeffamine ED-600 jet fuel (see Kerosene) 180 500 1000 18 50 100 D D D KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK 1332-58-7 143-50-0 8008-20-6 463-51-4 kaolin Kepone kerosene ketene 20 (resp) .01 1000 (140) 9 (5) 2T . 001 N 100 (14) N .9 (.5)N,T,0,M LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL 64742-89-8 124-22-1 112-55-0 7439-92-1 7784-40-9 7758-97-6 8032-32-4 1317-65-3 58-89-9 330-55-2 68476-85-7 7580-67-8 lactol spirits (aliphatic solvent) laurylamine lauryl mercaptan (dodecylmercatan) lead lead arsenate (as PbAs04) lead chromate (as Cr) lead chromate (as Pb) Ligroine (VM&P naphtha) limestone (calcium carbonate) Lindane Linuron liquified petroleum gas (L.P.G.) lithium hydride 3500 350 D 100 40 i5) 10 4 (.5) D N must meet NAAQS 1.5 ' .15 T .12 .012 T .5 .05 T 3500 (875) 350 (88) N 50 (resp) 5 N, 0 5 .5 N, T, 0, M 40 4 D 18000 1800 N, T, 0 (10000) (1000) .25 .025 N,T,0,M 19 ASARCO ELP 0001069 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 546-93-0 1309-48-4 121-75-5 110-16-7 108-31-6 109-77-3 7439-96-5 7439-96-5 12079-65-1 1313-35-7 1317-65-3 7439-97-6 7439-97-6 7439-97-6 108-67-8 141-79-7 57837-19-1 79-41-4 126-98-7 74-82-8 74-93-1 16752-77-5 72-43-5 109-86-4 110-49-6 76-38-0 150-76-5 1589-47-5 110-67-8 70657-70-4 79-20-9 105-45-3 74-99-7 96-33-3 magnesite 50 5 N, 0 magnesium oxide (fume) 50 5 0 Malathion 50 5 0 maleic acid 14 1.4 D maleic anhydride 10 (2.5) 1 (.25) N,T,0 malonitrile 80 (30) 8 (3) N manganese fume 10 1 N,T,0 manganese dust & compounds ' "30 3 N manganese cyclopentadienyl tricarbonyl 1 .1 N,T,0 manganese tetroxide 10 1 0,M marble (calcium carbonate) 50 5 N,0 mercury alkyl compounds .1 .01 N,T,0,M mercury, aryl & inorganic cpds. 1 .1 N,T,0,M mercury, all other forms .5 .05 N,T,0 (Hg vapor, colloidal or metallic Hg) mesitylene 1250 (250) 125 (25) N,T,0 (1,3,5-trimethyl benzene) mesityl oxide 204 (51)(O) 40 (10) N metalaxyl 50 (PM) 5 D methacrylic acid 700 (200) 70 (20) N,T,0 methacrylonitrile 27 (10) 2.7 (1) N,T,0 (methylacrylonitrile; 2-methyl- 2-propenenitrile, MAN) methane simple asphyxiant methanethiol** 2 (1)(o) 1 (.1) N,T,0,M (methyl mercaptan) Methomyl (Lannate) 25 2.5 N,T,0 Methoxychlor 50 5 0 methoxyethano1, 2- 160 (50) 16 (5) T,M (methyl Cellosolve; ethylene glycolmonomethyl ether) methoxyethanol acetate, 2- 240 (50) 24 (5) T,M (ethylene glycol monomethyl ether acetate) methoxyflurane 135 (20) 13.5 (2) N methoxyphenol, 4- 50 (PM) 5 N,T,0 (hydroquinone monomethyl ether; p-hydroxyanisole) methoxypropan-l-ol, 2- 750 (200) 75 (20) M methoxypropionitrile, 3- 2000 200 D methoxypropyl-1-acetate, 2- 1100 (200) 110 (20) M methyl acetate 6060 (2000) 606 (200) NTOM methyl acetoacetate 3000 300 D methyl acetylene 16400 1640 N,T,0,M (10000) (1000) methyl acrylate 61 (17)(O) 18 (5) M 20 ASARCO ELP 0001070 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour 126-98-7 109-87-5 67-56-1 74-89-5 108-11-2 110-43-0 100-61-8 589-18-4 74-83-9 591-78-6 1634-04-4 74-87-3 71-55-6 79-22-1 137-05-3 108-87-2 25639-42-3 583-60-8 12108-13-3 96-37-7 8022-00-2 105-59-9 101-6-8-8 75-09-2 101-14-4 5124-30-1 101-77-9 115-10-6 78-93-3 96-29-7 1338-23-4 107-31-3 534-22-5 540-84-1 methylacrylonitrile 27 (10) (methacrylonitrile) methylal (dimethoxymethane; 31100 methoxymethane) (10000) methyl alcohol 2620 (2000) methylamine 64 (50) methyl amyl alcohol 292 (70)(O) (methyl isobutyl carbinol) methyl n-amyl ketone " 94 (6) methyl aniline, N- 22 (5) methylbenzyl alcohol 600 (120) methyl bromide** 190 (50) methyl n-butyl ketone 40 (10) methyl-tert-butyl ether (MTBE) 600(125)(O) methylbutyraldehyde 1800 (510) methyl chloride 1030 (500) methyl chloroform 10800(2000) (1,1,1-trichloroethane) methyl chloroformate 2 methyl 2-cyanoacrylate 91 (20) methyl cyclohexane 16100(4000) methyl cyclohexanol 2340 (500) methyl cyclohexanone, o- 2290 (500) methyl cyclopentadienyl 2 manganese tricarbonyl methylcyclopentane 2580 (750) methyl demeton 5 methyldiethanolamine 500 (100) methylene bisphenyl .5 (.05) diisocyanate (MDI) methylene chloride 260 (75) methylene bis(2-chloro- 2.2 (.2) aniline), 4,4'- (MBOCA) methylene bis(4-cyclo- .54 (.05) hexylisocyanate) methylene dianiline, 4,4' 8.1 (1) methyl ether (dimethyl ether) 19100 (10000) methyl ethyl benzene, 1250 (250) all isomers (ethyltoluene, m- / P-/ O-) methyl ethyl ketone (MEK) 3900 (1320)(o) methyl ethyl ketone oxime 1960 (550) methyl ethyl ketone peroxide 15 (2) methyl formate 2460 (1000) methylfuran, 2- 550 methyl heptane (isooctane) 3500(750) 2.7 (1) N,T,0 3110 N,T,0,M (1000) 262 (200) NTOM 6.4 (5) T 104 (25) N,T,0,M * 2.2 (.5) N,T,0,M 60 (12) D 19 (5) T,0,M 4 (1) N 288(80) D 180 (51) D 103 (50) T,0,M 1080 (200) M .2 D 9.1 (2) N,T,0,M 1610 (400) N,T,0 234 (50) N,T,0,M 229 (50) N,T,0,M .2 N,T,0 258 (75) D .5 N,T,0,M 50 (10) D .05 (.005) N,T 26 (7.5) E .22 (.02) T,0 .054 (.005) T .81 (.1) T 1910 (1000) M 125 (25) N,T,0 590 (200)N,T,O,M 196 (55) D 1.5 (.2) N,T 246(100) N,T,0,M 55 D 350(75) D 21 ASARCO ELP 0001071 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL /xg/m3(ppb) 30-minute annual or 1-hour 541-85-5 111-13-7 60-34-4 74-88-4 110-12-3 108-11-2 108-10-1 624-83-9 99-87-6 563-80-4 74-93-1 80-62-6 298-00-0 108-11-2 107-87-9 120-94-5 872-50-4 681-84-5 98-83-9 75-18-3 21087-64-9 7786-34-7 12001-26-2 8032-32-4 7439-98-7 7439-98-7 6923-22-4 110-91-8 methyl-3-heptanone, 5(ethyl amyl ketone) methyl hexane, 2- (isoheptane) methyl hexyl ketone (octanone) methyl hydrazine methyl iodide methyl isoamyl ketone methyl isobutyl carbinol (4-methyl-2-pentanol) methyl isobutyl ketone (MIBK; hexanone) methyl isocyanate** methyl isopropylbenzene, 4(p-cymene) methyl isopropyl ketone methyl mercaptan** methyl methacrylate Methyl parathion methyl-2-petanol, 4methyl propyl ketone (2-pentanone) methylpyrrolidine, Nmethyl-2-pyrrolidone, Nmethyl silicate methyl styrene, amethyl styrylphenol, pmethyl sulfide (dimethyl sulfide) Metribuzin Mevinphos mica mineral spirits (naphtha) mineral wool fibers molybdenum, soluble molybdenum, insoluble Monocrotophos (Azodrin) morpholine 1310 (250) 131 (25) N,T,0 3070(750) 5100 (970) .19 (.1) 120 (20) 56 (12)(O) 292 (70)(O) 307(75) D 510 (97) D .02 (.01) T 12 l[2) k N,T,O 104 (25) N,T,0,M 2050 (500) 205 (50) N,T,0 .47 (.2) .05 (.02) N,T,0 2745 (500) 275 (50) D 7050 (2000) 2 (l)(o) 339 (82)(o) 2 1000(250) 5300 (1500) 705 (200) N,T,0 1 ( 5) N,T,0,M 210(50) M .2 N,T, 0 100(25) M 530 (150) N 70 1100 (275) 60 (10) 250 (52)(O) 140 3 (O) 7D 110 (27.5) D 6 (1) N,T,0 240 (50) N,T,0 14 D * 50 .92 (.I)' 30 3500 (875) 50 50 100 2.5 36 (O) 5 .09 3 350 5 5 10 .25 k N, T, 0 (.01) T N, T, 0 (88) N N T,0,M T,0 N,T,0 NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN 300-76-5 8030-30-6 8032-32-4 Naled (Dibrom) naphtha, coal-tar naphtha, VM&P (petroleum distillates) 30 3 4000 (1000) 400 (100) 3500 (875) 350 (88) T,M N, 0 N 22 ASARCO ELP 0001072 CAS NO. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour 91-20-3 25551-28-4 3173-72-6 7440-01-9 126-30-7 7440-02-0 13463-39-3 54-11-5 1929-82-4 7697-37-2 10102-43-9 100-01-6 98-95-3 100-00-5 79-24-3 10102-44-0 7783-54-2 55-63-0 75-52-5 108-03-2 79-46-9 99-08-1 88-72-2 99-99-0 10024-97-2 111-84-2 112-0.5-0 1455-21-6 25154-52-3 9016-45-9 9016-45-9 naphthalene 440 (88)(o) 50 (10) naphthalene diisocyanate (NDI) .4 .04 N naphthalene diisocyanate, 1,5- .9 (.1) .09 (.01) M neon simple asphyxiant neopentyl glycol 500 50 D nickel & compounds . 15 .015 N nickel carbonyl** .15 .015 N nicotine 5 .5 N,T,0,M Nitrapyrin 50 - ~ 5 O nitric acid** 52 (20) 5.2 (2) N,T,0 nitric oxide 310 (250) 31 (25) N,T,0 nitroaniline 30 3 N, T, 0 nitrobenzene 24 (4.8)(o) 5 (1) N,T,0,M nitrochlorobenzene 6.4 (1) .64 (.1) T nitroethane 3070 (1000) 307 (100) NT0M nitrogen dioxide must meet NAAQS nitrogen trifluoride see TACB Reg III nitroglycerin (NG) 1 .1 N, 0 nitromethane (nitrocarbol) 500 (200) 50 (20) T nitropropane, 1- 910 (250) 91 (25) N,T,0,M nitropropane, 2- 360 (100) 36 (10) T,0 nitrosamines .007 ppb .0007 ppb (ESL in pg/mJ will depend on molecular weight: 70-100) nitrotoluene, m- 110 (20) 11 (2) N, T,0 nitrotoluene, o- 110 (20) 11 (2) N,T,0 nitrotoluene, p- 110 (20) 11 (2) N,T,O nitrous oxide 450 (250) 45 (25) N nonane nonoic acid 10500(2000) 1050 (200) N,T,0 4.6 (o) * nonylmercaptan, n- 33 (5) 3.3 (.5) N nonylphenol, mixed isomers 400 (45) 40 (4.5) D nonyl phenol ethoxylate 1000 100 D [also 26027-38-3] nonylphenol polyethylene- 600 (24) 60 (2.4) D glycol ether,nonionic [Tergitol TP-9; polyethylene (9) glycol nonyl phenyl ether; nonylphenoxypoly- (ethyleneoxy)ethanol] 0000000000000000000000000000000000000000000000000000000000000000000000000 2234-13-1 111-13-7 2885-00-9 111-65-9 octachloronaphthalene octanone (methyl hexyl ketone) octadecylmercaptan octane 1 5100 (970) 60 (5) 3500 (750) .1 510 (97) 6 (.5) 350 (75) N,T,0 D N N 23 ASARCO ELP 0001073 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 111-86-4 111-88-6 27193-28-8 2687-94-7 8012-95-1 20816-12-0 144-62-7 3033-62-3 7783-41-7 10028-15-6 octylamine octylmercaptan, noctyl phenol octyl pyrrolidone, Noil mist, mineral & others osmium tetroxide oxalic acid oxo-hexyl acetate oxybis(N,N-dimethylethylamine) (Thancat ZF-20) oxygen difluoride ozone 60 (11) 30 (5) 20 100 50 .016 (.002) 10 2750 216 (33) 6 (1) D 3 (.5) N 2D 10 D 5 N,T,0 .0016 N,T,0,M (.0002) 1 N, T, 0 275 D 22(3.3) 0 see TACB Reg III must meet NAAQS PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP 8012-95-1 64741-89-5 8002-74-2 4685-14-7 56-38-2 19624-22-7 - 7 6-oi-7 1321-64-8 82-68-8 87-86-5 115-77-5 4067-16-7 109-66-0 107-87-9 109-67-1 4635-87-4 110-66-7 127-18-4 594-42-3 7616-94-6 382-21-8 paraffin oil (see mineral oil mist) 50 5 N,T,0 paraffinic distillate 50 5 N,T,0 [include all 64741-xx-x oil mist group] paraffin wax fume Paraquat [also 1910-42-5; 2074-50-2] 20 1 2 N,T,0 .1 N,T,0,M Parathion .5 .05 N particulates not otherwise 100 (total) 10 T classified (PNOC) 50 (resp) 5 0 pentaborane .13 .013 N,T,0,M (.05) (.0015) pentachloroethane 400 (50) 40 (5) M pentachloronaphthalene 5 .5 N,T,0,M pentachloronitrobenzene 5 .5 T pentachlorophenol 5 .5 N,T,0 pentaerythritol 50 5 N, 0 pentaethylene hexamine 625 63 D pentane 3500 (1200) 350 (120) N pentanone, 2- 5300 (1500) 530 (150) N (methyl propyl ketone) pentene/ l- (l-amylene) 90 (30) * pentene nitrile, 3- 70 (27) 7 (3) D pentylmercaptan 21 (5) 2 (.5) N perchloroethylene 340 (50) 34 (5) E perchloromethyl mercaptan 7.5(1.1)(O) .8 (.1) perchloryl fluoride see TACB Reg III perfluoroisobutylene .82 (.1) .082 (. 01) T 24 ASARCO ELP 0001074 o as: 2 2 0 CAS NO. SUBSTANCE EFFECTS SCREENING LEVEL *ig/m3(ppb) 30-minute annual or 1-hour 93763-70-3 52645-53-1 8030-30-6 8032-32-4 532-27-4 85-01-8 156-43-4 103-73-1 108-95-2 92-84-2 108-45-2 95-54-5 106-50-3 101-84-8 60-12-8 100-42-5 122-60-1 100-63-0 108-98-5 638-21-1 122-97-4 298-02-2 7786-34-7 75-44-5 7 32-1-1-6 7803-51-2 7664-38-2 2929-95-5 13598-36-2 7723-14-0 10025-87-3 10026-13-8 1314-80-3 1314-56-3 7719-12-2 85-44-9 626-17-5 1918-02-1 109-06-8 108-99-6 perlite Permethrin (see pyrethrum) 50 50(PM) 5 5 N,0 D petroleum distillates 3500 (875) 350 (88) N (see VM&P naphtha) petroleum ether (VM&P naphtha) 3500 (875) 350 (88) N petroleum spirit (VM&P naphtha) 3500 (875) 350 (88) N phenacyl chloride (a-chloroacetophenone) 3.2 (.5) .32 (.05) N,T,0 phenanthracene 0.5 " (see coal tar pitch volatiles) 0.05 E phenetidine, p- 150 15 D phenetole (phenyl ethyl ether) phenol phenothiazine phenylene diamine, mphenylene diamine, ophenylene diamine, pphenyl ether (diphenyl oxide) 154 (40)(O) 50 1 1 1 8 (1.1)(o) 19 (5) 5 .1 .1 .1 7 (1) N,T,0,M N,T,0 T T T N,T, 0, M phenylethyl alcohol 500 (110) 50 (11) D phenylethylene (styrene) 430 (100)(O) 85 (20) M phenyl glycidyl ether (PGE) 60 (10) 6 (1) N,T,0,M phenylhydrazine 4.4 (1) .44 (.1) T phenyl mercaptan 4 (.8) (o) .5 (.1) N phenylphosphine 2.3 (.5) .23 (.05) N,T,0 phenylpropyl alcohol 1100 (200) 110 (20) D Phorate .5 .05 N,T,0 Phosdrin (Mevinphos) .92 (.1) .092 (.01) T phosgene** 4 (1) .4 (.1) N,T,0,M Phosmet (Prolate) 20 2 D phosphine** 4.2 (3) .42 (.3) N,T,0 phosphoric acid 10 1 N,T,0 phosphorodithioic acid esters, 1500 150 D zinc salt phosphorous acid 10 1 D phosphorus (yellow) 1 .1 N,T,O.M phosphorus oxychloride 6.3 (1) .63 (.1) N,T,0 phosphorus pentachloride phosphorus pentasulfide 8.5 (1) 10 .85 (.1) N,T,0,M 1 N,T,0,M phosphorus pentoxide 10 1 M phosphorus trichloride phthalic anhydride 11 (2) 61 1.1 (.2) N,T,0 6.1 N,T,0 phthalodinitrile, m- 50 5 N,T,0 Picloram picoline, 2picoline, 3- 50 53 (14)(O) 80 (20) 5 8 (2) 8 (2) 0 D D 25 ASARCO ELP 0001075 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour 108-89-4 88-89-1 83-26-1 1330-16-1, 110-85-0 142-64-3 72-98-9 3282-30-2 83-26-1 10101-41-4 7440-06-4 7440-06-4 1336-36-3 65996-93-2 9016-45-9 9003-39-8 9003-53-2 65997-15-1 1310-58-3 7722-64-7 74-98-6 107-1-9-7 57-57-8 79-09-4 107-12-0 93-55-0 114- 26-1 109-60-4 71-23-8 540-54-5 115- 07-1 78-89-7 78-90-0 78-87-5 57-55-6 6423-43-4 picoline, 4- 46 (12) picric acid .5 (o) Pindone 1 pinene [also 127-91-3; 80-56-8] 64 (11)(O) 4.6 .1 .1 * (1.2) D N, T, 0 N, T, 0 piperazine piperazine dihydrochloride pivalic acid pivaloyl chloride 34 50 250 40 3.4 5 25 4 D N,T,0 D D pivaloyl-l,3-indandione, 2- " 'T .1 N, T, 0 (pindone) plaster of Paris (see calcium sulfate) 50 (resp) 5 N,T platinum, metal platinum, soluble salts 10 .02 1 .002 N, T, 0 N,T,0,M polychlorinated biphenyls .1 .01 E (PCBs, see chlorodiphenyl) polycyclic aromatic hydrocarbons, particulate (PPAH) .5 .05 E (assume the fraction of benzo[a]pyrene not exceed 103 of total PPAH, see coal tar pitch volatiles) polyethylene (9) glycol nonyl 600 (24) 60 (2.4) phenyl ether, nonionic surfactant (Tergitol TP-9) poly (l-vinyl-2-pyrrolidinone)' 100 10 D polystyrene 100 10 D Portland cement 50 5 N, 0 potassium hydroxide 20 2 N,T,0 potassium permanganate 20 2 D propane 18000 (10000) 1800 (1000) N, 0, M propargyl alcohol 23 (10) 2.3 (1) N,T,0 propiolactone, 6- 15 (5) 1.5 (.5) T propionic acid 103 (34) (O) 30 (10) N ,t,o,m propionitrile 140- (60) 14 (6) N propiophenone 2300 230 D Propoxur (Baygon) propyl acetate, n- 5 626 (o) .5 * N, T, 0 propyl alcohol, n- 4920 (2000) 492 (200) N,T,0 propyl chloride propylene 30000 3000 117000 (V) * D propylene chlorohydrin 170 17 D propylene diamine 42 (O) 17 D propylene dichloride 1150 (250)(O) 350 (75) T, 0, M propylene glycol, vapor 4000 (1290) 400 (129) D 20 (PM) 2 D propylene glycol dinitrate 3 (.5) .3 (.05) N,T,0,M 26 ASARCO ELP 0001076 MK S O SDS2SODM O CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 107-98-2 75-58-8 75-56-9 111-43-3 110-74-7 107-03-9 627-13-4 106-36-5 74-99-7 95-63-6 9002-86-2 8003-74-7 129-00-0 110-86-1 68391-11-7 120-80-9 123-75-1 propylene glycol mono-t- 5400 (1000) 540 (100) D butyl ether propylene glycol monomethyl 3600 (1000) 360 (100) N,T,0 ether propyleneimine** propylene oxide 50 (20) 250 (100) 5 (2) N,T, 25 (10) propyl ether (dipropyl ether) 2500 (600) 250 (60) propyl formate 6475 (1800) 650 (180) propylmercaptan, n- 2.3 (.7)(o) 1.6 (.5) propyl nitrate 1050 (250) 105 (25) N,T,0, propyl propionate 4750 (1000) 475 (100) propyne (methyl acetylene) 16400 1640 N,T,0, (10000) (1000) pseudocumene 1250 (250) 125 (25) N,T, (1/2/4-trimethylbenzene) PVC 50 5 Pyrethrum (Pyrethrin) pyrene 50 0.5 5 0.05 N,T,0, (see coal tar pitch volatiles) pyridine pyridines, alkyl 69 (23) (O) 15 (5) N,T,0,M 150 15 D pyrocatechol (catechol) 230 (50) 23 (5) N,T,O pyronaphtha 40(10) 4(1) D-MSDS (dripolene; pyrolysis gasoline) pyrrolidine, 2- 140 14 D 27 ASARCO ELP 0001077 CAS No SUBSTANCE EFFECTS SCREENING LEVEL Mg/rn3(ppb) 30-minute annual or l-hour 616-45-5 pyrrolidone, 2- 70 7 D QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 14808-60-7 106-51-4 quartz (silica-crystalline) quinone 1 4 (1) .1 T,O,E .4 (.1) N,T,0,M rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr 121-82-4 108-46-3 7440-16-6 299-84-3 83-79-4 1309-37-1 38641-94-0 8030-30-6 RDX (cyclonite) resorcinol rhodium, soluble compounds, metal & insoluble cmpds Ronnel rosin core pyrolysis prods (as formaldehyde) Rotenone rouge (Fe203) Roundup herbicide rubber solvent (naphtha) 15 450 .01 1 100 1 (100) 1.5 45 (10) .001 .1 10 .1 N,T,0 N,T,O N,T,0 N, T, O N,T,0 50 50 50 4000 (1000) 5 5 5 400 N,T,0,M 0 D (100) N SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS 7782-49-2 7783-79-1 136-78-7 7803-62-5 selenium and compounds selenium hexafluoride (as HF) Sesone (Crag herbicide) silane (silicon tetrahydride) 2 .2 see TACB Reg III 50 5 70 (50) 7 (5) N, T, O N, 0 N,T,0 61790-53-2 112926-00-8 69012-64-2 60676-86-0 Silica-Amorohous: diatomaceous earth gel & precipitated silica silica fume silica, fused 60 60 20 (resp) .5 6 6 2 .05 N N, O T N 14464-46-1 14808-60-7 15468-32-3 1317-95-9 Silica-Crvstalline: cristobalite quartz tridymite tripoli .5 .05 N,T,0 1 .1 t,o,e .5 .05 N, T, 0 .5 .05 N 7440-21-3 409-21-2 silicon silicon carbide 50 5 N,0 50 5 N, O 28 ASARCO ELP 0001078 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or 1-hour 7803-62-5 7440-22-4 26628-22-8 7631-90-5 16940-66-2 136-78-7 62-74-8 1310-73-2 7681-57-4 9005-25-8 2885-00-9 7803-52-3 8052-41-3 7440-24-6 7789-06-2 57-24-9 100-42-5 1395-21-7 108-30-5 110-61-2 57-50-1 75-22-4 3689-24-5 7446-09-5 7446-09-5 2551-62-4 7664-93-9 10025-67-9 5714-22-7 7783-60-0 7791-25-5 2699-79-8 35400-43-2 8065-48-3 silicon tetrahydride (silane) silver and compounds soapstone, respirable dust 70 (50) .1 30 7 (5) .01 3 N,T, 0 N,0,M N,T,0 total dust 60 6 sodium azide 3 (1) .3 (.1) N,T sodium bisulfite sodium borohydride sodium, 2,4-dichloro- 50 5 N,T,0 1 .1 D 50 5 N, 0 phenoxyethyl sulfate (Sesone) sodium fluoroacetate sodium hydroxide .5 .05 N, T, 0 20 2 N, T,0,M sodium metabisulfite 50 5 N,T,0 starch stearates 50 5 N,0 100 10 T stearyl mercaptan 60 (5) 6 (.5) N (octadecyl mercaptan) stibine 5 (1) .5 (.1) N,T,0,M Stoddard solvent strontium and compounds strontium chromate, as Cr 3250 (1000) 325 (100) 20 2 .1 .01 N D E Strychnine 1.5 . 15 N,T,0,M styrene, monomer 430* (100)(o) 85 (20) M * under review Subtilisins [also 9014-01-1] , 0006 .00006 N,T,0 succinic anhydride succinonitrile 25 2 do (60) 2.5 20 (6) D N sucrose 50 5 N, 0 Sulfinol Sulfonic N-95 230 1000 23 100 D D (nonylphenyl ethoxylate) Sulfotep (TEDP) 2 .2 N,T,O,M sulfur dioxide must meet NAAQS & TACB Reg II sulfur dioxide (liquid)** must meet NAAQS & TACB Reg II sulfur hexaflouride see TACB Reg III sulfuric acid see TACB Reg II sulfur monochloride 5.6 (1)(O) 5.5 (1) N,T,0,M sulfur pentafluoride see TACB Reg III sulfur tetrafluoride see TACB Reg III sulfuryl chloride 36 3.6 D sulfuryl fluoride Sulprofos see TACB Reg III 10 1 N,T,0 Surfonamine 180 18 D Systox see Demeton 29 ASARCO ELP 0001079 CAS No SUBSTANCE EFFECTS SCREENING LEVEL Aig/mJ(ppb) 30-minute annual or l-hour 93-76-5 14807-96-6 7440-25-7 1314-61-0 3689-24-5 13494-80-9 7783-80-4 3383-96-8 107-49-3 9016-45-9 68956-56-9 26140-60-3 79-27-6 634-66-2 1746-01-6 76-11-9 76-12-0 79-34-5 127-18-4 56-23-5 1335-88-2 58-90-2 112-57-2 78-00-2 78-10-4 107-49-3 109-99-9 119-64-2 75-59-2 110-60-1 75-74-1 3333-52-6 2,4,5-T (2,4,5-trichloro- 100 10 N,T,0,M phenoxyacetic acid) talc (no asbestos), respirable 20 2 N,T,0,M talc (with asbestos) use asbestos ESL tantalum, metal 50 5 N,T,0,M tantalum oxide 50 5 N,T,0 TEDP (Sulfotep) 2` " .2 N,T,0,M tellurium & compounds 1 .1 N,T,0,M tellurium hexafluoride see TACB Reg III Temephos 50 5 N,0 Tenneco T500-100 2700 (550) 270 (55) D TEPP (tetraethylpyrophosphate) .5 .05 N,T,0,M Tergitol TP-9 50 (PM) 5 D (polyethylene glycol nonyl phenyl ether) terpenes 2000 200 D terphenyls 50 (5) 5 (.5) N,T,0 tetrabromoethane, 1,1,2,2- 140 (10) 14 (1) M tetrachlorobenzenes 1000 (o) 350 D [also 95-94-3] tetrachlorodibenzo-p-dioxin, -- 9.2 X 10'* E,NY 2,3,7,8- (TCDD) tetrachlorodibenzofuran (TCDF) -- 1 X 10* D tetrachloro-2,2-difluoro- 41700 (5000) 4170 (500) N,T,0 ethane, 1,1,1,2- (Freon 112A) tetrachloro-1,2-difluoro- 41700 (5000) 4170 (500) N,T,0 ethane, 1,1,2,2- (Freon 112) tetrachloroethane, 1,1,2,2- 70 (10) 7 (1) N,T,0,M tetrachloroethylene 340 (50) 34 (5) E (perchloroethylene) tetrachloromethane 126 (20) 13 (2) N, 0 (carbon tetrachloride) tetrachloronaphthalene 20 2 N,T,0 tetrachlorophenol, 2,3,4,6- 20 (o) 7 D tetraethylenepentamine 400 40 D tetraethyl lead .75 .075 N,0 tetraethylorthosilicate 8500 (1000) 850 (100) M tetraethylpyrophosphate (TEPP) .5 .05 N,T,0,M tetrahydrofuran 5900 (2000) 590 (200) NTOM tetrahydronaphthalene 3030 (560) 303 (56) D (tetraline) tetramethylammonium hydroxide 10 1 D tetramethylenediamine 180 18 .D tetramethyl'lead .75 .075 N,0 tetramethyl succinonitrile 30 (5) 3 (-5) N,T,0,M 30 ASARCOELP 0001080 CAS No SUBSTANCE EFFECTS SCREENING LEVEL Mg/m3(ppb) 30-minute annual or l-hour 509-14-8 26544-38-7 7722-88-5 479-45-8 25265-77-4 7440-28-0 96-69-5 68-11-1 7719-09-7 62-56-6 137-26-8 7440-31-5 13463-67-7 7550-45-0 119-93-7 108-88-3 95-80-7 584-84-9 91-08-7 95-53-4 8001-35-2 126-73-8 102-85-2 76-03-9 120-82-1 71-55-6 79-00-5 79-01-6 75-69-4 67-66-3 1321-65-9 76-06-2 95-95-4 88-06-2 96-18-4 76-13-1 tetranitromethane 80 (10) tetrapropenylsuccinic anhydride 40 (3.6) tetrasodium pyrophosphate 50 tetryl (2,4,6-trinitrophenyl- 1 methyl-nitramine) Texanol 835 (140) thallium, soluble compounds 1 thiobis(t-butyl-m-cresol),4,4- 50 thioglycolic acid 1.25 (o) thionyl chloride 50 (10) thiourea (thiocarbamide) 50 (PM) Thiram 10 tin compounds: organic compounds (as Sn) 1 metal, oxide & inorganic 20 compounds (except SnH4) titanium dioxide, respirable , 50 titanium tetrachloride 10 tolidine, o- .2 toluene (toluol) 1880 (500) toluene-2,4-diamine 50 toluene-2,4-diisocyanate (TDI) .36 (.05) toluene-2,6-diisocyanate .7 (.1) toluidine, all isomers 90 (20) [also 108-44-1; 106-49-0] Toxaphene 5 tributyl phosphate 25 (2) tributyl phosphite 20 (2) trichloroacetic acid 70 (10) trichlorobenzene, 1,2,4- 400 (50) trichloroethane/ 1,1,1- 10800 (methyl chloroform) (2000) trichloroethane, 1,1,2- 550 (100) trichloroethylene 1350 (250) trichlorofluoromethane 28000 (O) (Freon 11) (5000) trichloromethane (chloroform) 100 (20) trichloronaphthalene 50 trichloronitromethane 6.7 (1) (chloropicrin) trichlorophenol, 2,4,5- 440 trichlorophenol, 2,4,6- 21 (o) trichloropropane, 1,2,3- 600 (100) trichloro-1,2,2-trifluoro- 76000 ethane, 1,1,2- (Freon 113) (10000) 8 (1) N,T,0,M 4 (.36) D 5 N,T,0 .1 0 84 (14) D .1 N,T,0,M 5 N, 0 * 5 (1) 5 1 N,T,0 D T .1 N,T,0 2 N,T,0 50 1D .02 N 188 (50) T 5D .035 (.005) NTO .07 (.01) M 9 (2) N,T,0 .5 T,0,M 2.5 (.2) N,T,0 2 (.2) D 7 (1) N,T,0 40 (5) N,T,0,M 1080 M (200) 55 (10) T,M 135 (25) N 5600 (1000) 10 (2) 0 5 N,T,0,M .67 (.1) N,T,0,M 44 it 60 (10) 7600 (1000) D N,T,0 N,T,0 31 ASARCO ELP 0001081 CAS No SUBSTANCE EFFECTS SCREENING LEVEL Mg/m*(ppb) 30-minute annual or l-hour 13121-70-5 102-71-6 121-44-8 280-57-9 112-24-3 75-63-8 63979-83-9 552-30-7 563-04-2 75-98-9 75-50-3 25551-13-7 121-43-7 109-76-2 123-17-1 25265-77-4 121-45-9 88-89-1 118-96-7 78-30-8 110-88-3 78-32-0 603-34-9 115-86-6 101-02-0 102-69-2 24800-44-0 27955-94-8 26523-78-4 786t19-6 7440-33-7 8006-64-2 tricyclohexyltin hydroxide (Cyhexatin) triethanolamine triethylamine triethylene phosphate triethylene diamine triethylene tetramine trifluoroacetoacetyl chloride trifluorobromomethane (Freon 13B1) tri(isobutenyl)succinic anhydride trimelletic anhydride trimetacresyl phosphate trimethylacetic acid (pivalic acid) trimethylamine trimethyl benzene (mixed isomers) trimethyl borate trimethylene diamine trimethyl-4-nonanone, 2,6,8- (isobutyl heptyl ketone) trimethylpentanediol iso- butyrate (Texanol) trimethyl phosphite trinitrophenol (picric acid) trinitrotoluene (TNT) triorthocresyl phosphate trioxane triparacresylphosphate triphenylamine triphenyl phosphate triphenyl phosphite tripropylamine tripropylene glycol tris(hydroxyphenyl)ethane tris(nonylphenol)phosphite Trithion tungsten, insoluble cpds soluble cpds turpentine 50 5 N,T,0 31 (5) 40 (10) 500 (67) 370 (80) 240 (40) 20 -- 61000 (10000) 10 (1) 3 (.5) 4 (1) 50 (7) 37 (8) 24 (4) 2 6100 (1000) 1 (.1) T E D D D D N ,t,o,m D .1 3 250 1 (.4) 1250 (250) .01 .3 25 * 125 (25) T D D N,T,0 13 50 3750 (500) 1.3 5 375 (50) D D D 835 84 D .5 (o) .5 (o) 5 1 190 3 50 30 25 16 400 (vapor) 25 (PM) 60 30 1 50 10 5560 (1000) * .1 N,T,0 .5 N,T,0 .1 N,T,0 19 D .3 D 5 N,T,0 3 N,T,0 2.5 D 1.6 D 40 D 2.5 D 6D 3D .1 D 5 N,T,0 1 556 (100) NTOM 32 , K' ASARCO ELP 0001082 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/mJ(ppb) 30-minute annual or l-hour UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU 112-37-8 5332-52-5 7440-61-1 51-79-6 undecanoic acid undecyl mercaptan (1-undecanethiol) uranium, soluble cpds insoluble cpds urethane (ethyl carbamate) 11 (0) 39 (5) .5 2 5 * 3.9 (.5) .05 .2 .5 N N,0 D vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv 110-62-3 1314-62-1 68956-68-3 108-05-4 100-42-5 593-60-2 75-01-4 107-13-1 100-40-3 106-87-6 75-02-5 75-35-4 75-38-7 88-12-0 25013-15-4 valeraldehyde vanadium pentoxide vegetable oil mists vinyl acetate vinyl benzene (styrene) vinyl bromide vinyl chloride vinyl cyanide (acrylonitrile) vinylcyclohexene, 4vinyl cyclohexene dioxide vinyl fluoride vinylidene chloride vinylidene fluoride vinyl-2-pyrrolidone, 1vinyl toluene 98 (o) .5 50 150 (40) 430 (100)(o) 200 (50) 130 (50) 43 (20) 4 (1) 570 (100) 19 (10) 40 (10) 26 (10) 180 2420 (500) * .05 N ,t,o,m 5 N,0 15 (4) N 85 (20) M 20 (5) T, 0 13 (5) T 4.3 (2) T,0 .4 (.1) T 57 (10) N, T, 0 2 (1) N 4 (1) 0 2.6 (1) N 18 D 242 (50) T WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW 81-81-2 ---------------------------------------- Warfarin welding fumes wood dust, hard woods wood dust, soft woods 1 .1 N,T,0 50 5 T, 0 10 1 T 50 5 T, 0 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 1477-55-0 1300-71-6 1300-73-8 xylene, all isomers xylene-a,a'-diamine, mxylenol xylidine (mixed isomers) 3700(850) (O) 1 165 25 (5) 435 .1 17 2.5 (100) N,T,0 N,T,0 D (.5) N 33 ASARCOBLP00010S3 CAS No. SUBSTANCE EFFECTS SCREENING LEVEL Mg/mJ(ppb) 30-minute annual or 1-hour YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY 7440-65-5 yttrium metal & compounds 10 1 N,T,0 zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz 7646-85-7 7646-85-7 13530-65-9 1314-13-2 1314-13-2 557-05-1 7440-67-7 148-01-6 zinc beryllium silicate, as Be (see beryllium & cpds) ------- zinc chloride fume zinc chromates, as Cr (also 1103-86-9; 37300-23-5] zinc oxide, fume zinc oxide, dust zinc stearate zirconium compounds, as Zr zoalene (dinitolmide) see TACB Reg III 10 1 .1 .01 50 5 50 5 50 5 50 5 50 5 N,T,Q T N,T,0,M N, O N,0 T,0,M N,T,0 ***THE END*** 34 ASARCO ELP 0001084 ADDENDUM The Texas Air Control Board is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex, national origin, age or disability in employment or in the provision of services, programs, or activities. In compliance with the Americans with Disabilities Act, this document may be requested in alternate formats by contacting Rhonda J. Sing at (512) 908-1795, or FAX (512) 908-1794, or 1800-RELAY-TX (TDD), or by writing or visiting at 12124 Park 35 Circle, Austin, TX 78753. ASARCO ELP 0001085