Title 11 — HEALTH AND SAFETY›Division 4 — UNDERGROUND STORAGE OF HAZARDOUS MATERIALS›Chapter 11.88 — MISCELLANEOUS
Los Angeles County Municipal Code Part IX Supplement
Los Angeles County Municipal Code · 2026-09 edition · updated 2026-10-04 · Los Angeles County
Cite as: Los Angeles County Municipal Code Part IX · Text as of 2026-10-04
APPENDIX C MAXIMUM ACCEPTABLE CONCENTRATIONS
| Acetaldehyde | 200 | 360 |
|---|---|---|
| Acetic acid | 10 | 25 |
| Acetic anhydride | 5 | 20 |
| Acetone | 1,000 | 2,400 |
| Acetonitrile | 40 | 70 |
| Acetylene dichloride, see 1, 2-Dichloroethylene | —- | —- |
| Acetylenetetrobromide | 1 | 14 |
| 2-Tetrachloroethane | —- | —- |
| Acetylene tetrochloride, see 1, 1, 2, Acrolein | 0.1 | 0.25 |
| Acrylamide-Skin | —- | 0.3 |
| Acrylonitrile-Skin | 20 | 45 |
| Aldrin-Skin | —- | 0.25 |
| Allyl alcohol-Skin | 2 | 5 |
| Allyl chloride | 1 | 3 |
| Allyl glycidyl ether (AGE) | 10 | 45 |
| Allylpropyldisulfide | 2 | 12 |
| Aminodimethylbenzene, see Xylidine | —- | —- |
| 2-Aminoethanol, see Ethanolamine | —- | —- |
| 2-Aminonaphthalene, see B-Naphthylamine | —- | —- |
| 2-Aminopyridine | 0.5 | 2 |
| Ammonia | 50 | 35 |
| Ammonium sulfamate (Ammate) | —- | 15 |
| n-Amylacetate | 100 | 525 |
| sec-Amylacetate | 125 | 650 |
| Aniline-Skin | 5 | 19 |
| Anisidine (o, p-isomers)Skin | —- | 0.5 |
| Antimony and compounds (as Sb) | —- | 0.5 |
| ANTU (Alpha naphthyl thiourea | —- | 0.3 |
| Arsenic and compounds (as As) | —- | 0.5 |
| Arsine | 0.05 | 0.2 |
| Azinphos-methyl-Skin | —- | 0.2 |
| Barium (soluble compounds) | —- | 0.5 |
| Benzene-Skin | 25 | 80 |
| Benzidine-Skin | —- | A 1 |
| p-Benzoquinone, see Quinone | —- | —- |
| Benzol, see Benzene | —- | —- |
| Benzoyl peroxide | —- | 5 |
| Benzyl chloride | 1 | 5 |
| Beryllium | —- | 0.002 |
| Boronoxide | —- | 15 |
| Boron triflouride | 1 | 3 |
| Bromine | 0.1 | 0.7 |
| Bromoform-Skin | 0.5 | 5 |
| Butadiene (1, 3-butadiene) | 1,000 | 2,200 |
| Butanethiol, see Butyl mercaptan | —- | —- |
| Butanol, see Butyl alcohol | —- | —- |
| 2-Butanone | 200 | 590 |
| 2-Butoxy ethanol-Skin | 50 | 240 |
| Butylacetate (n-butyl acetate) | 150 | 710 |
| n-Butyl acetate | 150 | 710 |
| sec-Butyl acetate | 200 | 950 |
| tert-Butyl acetate | 200 | 950 |
| Butyl alcohol | 100 | 300 |
| tert-Butyl alcohol | 100 | 300 |
| Butylamine—Skin | 5 | 15 |
| Butyl cellosolve, see 2-Butoxy ethanol | —- | —- |
| tert-Butyl chromate (as CrO3)-Skin | —- | 0.1 |
| n-Butyl glycidyl ether (BGE) | 50 | 270 |
| Butyl mercaptan | 10 | 35 |
| p-tert Butyltoluene | 10 | 60 |
| Cadmium (Metal dust and soluble salts) | —- | 0.1 |
| Cadmium oxide fume | —- | 0.1 |
| Calcium arsenate | —- | 1 |
| Calcium oxide | —- | 5 |
| Camphor | —- | 2 |
| Cabaryl (Sevin) (R) | —- | 5 |
| Carbolic acid, see Phenol | —- | —- |
| Carbon black | —- | 3.5 |
| Carbon dioxide | 5,000 | 9,000 |
| Carbon disulfide-Skin | 20 | 60 |
| Carbon monoxide | 50 | 55 |
| Carbontetrachloride-Skin | 10 | 65 |
| Cellosolve, see 2-Ethoxyethanol | —- | —- |
| Chlordane—Skin | —- | 0.5 |
| Chlorinated camphine-Skin | —- | 0.5 |
| Chlorinated diphenyl ether, see Chlorinated diphenyl oxide | —- | —- |
| Chlorinated diphenyl oxide | —- | 0.5 |
| Chlorine | 1 | 3 |
| Chlorine dioxide | 0.1 | 0.3 |
| Chlorine trifluoride | 0.1 | 0.4 |
| Chloroacetaldehyde | 1 | 3 |
| Chlorobenzene (monochlorobenzene) | 75 | 350 |
| o-Chlorobenzylidene malononitrile (OCBM) | 0.05 | 0.4 |
| Chlorobromonethane | 200 | 1,050 |
| 2-Chloro-1, 3-butadiene, see Choloroprene | —- | —- |
| Chlorodiphenyl (42% chlorine)-Skin | —- | 1 |
| Chlorodiphenyl (54% chlorine)-Skin | —- | 0.5 |
| 1-Chloro-2, 3-exposypropane, see Epichlorohydrin | —- | —- |
| 2-Chloroethanol, see Ethylene chlorohydrin | —- | —- |
| Chloroform (trichloromethane) | 50 | 240 |
| 1-Chloro-1-nitropropane | 20 | 100 |
| CMropicrin | 0.1 | 0.7 |
| Chloroprene-Skin | 25 | 90 |
| Chloropropylene oxide, see Epichlorohydrin | —- | —- |
| Chromic acid and chromates (as Cr03) | —- | 0.1 |
| Coal tar pitch volatiles (benzene soluble fraction) (anthracene, BaP, phenanthrene, acridine, chrysene, pyrene) | —- | 0.2 |
| Cobalt | —- | 0.5 |
| Copper fume | —- | 0.1 |
| dusts and mists | —- | 1.0 |
| Cotton dust (raw) | —- | 1 |
| Crag (R) herbicide | —- | 15 |
| Cresol (all isomers)-Skin | 5 | 22 |
| Crotonaldehyde | 2 | 6 |
| Cumene-Skin | 50 | 245 |
| Cyanide (as CN)-Skin | —- | 5 |
| Cyclohexane | 300 | 1,050 |
| Cyclohexanol | 50 | 200 |
| Cyclohexanone | 50 | 200 |
| Cyclohexene | 300 | 1,015 |
| Cyclophentadiene | 75 | 200 |
| 2, 4-D | —- | 10 |
| DDH, see 1, 3-Dichloro-5, 5-dimethyl hydrantoin | —- | —- |
| DDT-Skin | —- | 1 |
| DDVP-Skin | —- | 1 |
| Decaborane-Skin | 0.05 | 0.03 |
| Demeton (R)-Skin | —- | 0.1 |
| Diacetone alcohol (4-hydroxy-4-methyl-2-pentanone | 50 | 240 |
| 1, 2-Diaminoethane, see Ethylenediamine | —- | —- |
| Diazomethane | 0.2 | 0.4 |
| Dibenzoyl peroxide, see Benzoyl peroxide | —- | —- |
| Diborane | 0.1 | 0.1 |
| 1, 2-Dibromoethane (ethylene dibromide)-Skin | 25 | 190 |
| o-Dichlorobenzene | 50 | 300 |
| p-Dichlorobenzene | 75 | 450 |
| Dichloromonofluoromethane | 1,000 | 4,200 |
| 1, 3-Dichloro-5, 5-dimethyl hydrantoin | —- | 0.2 |
| 1, 1-Dichloroethane | 100 | 400 |
| 1, 2-Dichloroethane | 50 | 200 |
| 1, 2-Dichloroethylene | 200 | 790 |
| Dichloroethylether-Skin | 15 | 90 |
| Dichloromethane, see Methylenechloride | —- | —- |
| Dichloromonofluoromethane | 1,000 | 4,200 |
| 1, 1-Dichloro-1-nitroethane | 10 | 60 |
| 2, 4-Dicholorphenoxyacetic acid, 2, 4-D | —- | —- |
| 1, 2-Dichloropropane, see Propylenedichloride | —- | —- |
| Dichlorotetrafluoroethane | 1,000 | 7,000 |
| Dieldrin-Skin | —- | 0.25 |
| Diethylamine | 25 | 75 |
| Dlethylamino ethanol-Skin | 10 | 50 |
| Diethylether, see Ethyl ether | —- | —- |
| Di-2-ethylhexylphthalate, see Di-sec, octy phthalate | —- | —- |
| Difluorodibromoethane | 100 | 860 |
| Diglycidyl ether (DGE) | 0.5 | 2.8 |
| Dihydroxybenzene, see Hydroquinone | —- | —- |
| Diisobutyl ketone | 50 | 290 |
| Dimethoxymethane, see Methylal | —- | —- |
| Dimethylacelimide-Skin | 10 | 35 |
| Dimethylamine | 10 | 18 |
| Dimethylaminobenzene, see Xylidene | —- | —- |
| Dimethylaniline (N-dimethylaniline)-Skin | 5 | 25 |
| Dimethylbenzene, see Xylene | —- | —- |
| Dimethyl, 1, 2-dibromo-2, 2-dichloroethyl phosphate (Dibrom)(R) | —- | 3 |
| Dimethyl dichlorovinyl phosphate, see DDVP | —- | —- |
| Dimethylformamide-Skin | 10 | 30 |
| 2, 6-Dimethylheptanone, see Diisobutyl ketone | —- | —- |
| 1, 1-Dimethylhydrazine-Skin | 0.5 | 1 |
| Dimethyl ketone, see Acetone | —- | —- |
| Dimethylsultate-Skin | 1 | 5 |
| Dinitrobenzene (all isomers)-Skin | —- | 1 |
| Dinitro-o-cresol-Skin | —- | 0.2 |
| Dinitrotoluene-Skin | —- | 1.5 |
| Dioxane (Diethylene dioxide)-Skin | 100 | 360 |
| Diphenyl chloride, see Chlorodiphenyl | —- | —- |
| Diphenylmethane diisocyanante, see Methylene bisphenyl isocyanate (MDI) | —- | —- |
| Dipropylene glycol methyl ether-Skin | 100 | 600 |
| Di-sec, octyl phthalate | —- | 5 |
| DMF, see Dimethylformamide | —- | —- |
| DMH, see 1, 1-Dimethylhydrazine | —- | —- |
| DOP, see Di-sec octyl phthalate | —- | —- |
| Endrin-Skin | —- | 0.1 |
| Epichlorohydrin-Skin | 5 | 19 |
| EPN-Skin | —- | 0.5 |
| 1, 2-Epoxypropane, see Propyleneoxide | —- | —- |
| 2, 3-Epoxy 1-propanol, see Glycidol | —- | —- |
| Ethanethiol, see Ethyl mercaptan | —- | —- |
| Ethanol, see ethyl alcohol | —- | —- |
| Ethanolamine | 3 | 6 |
| 2-Ethoxyethanol-Skin | 200 | 740 |
| 2-Ethoxyethlacetate (Cellosolve acetate)-Skin | 100 | 540 |
| Ethyl acetate | 400 | 1,400 |
| Ethyl acrylate-Skin | 25 | 100 |
| Ethyl alcohol | 1,000 | 1,900 |
| Ethylamine | 10 | 18 |
| Ethylsec-amyl ketone (5-methyl-3-Heptanone) | 25 | 130 |
| Ethyl benzene | 100 | 435 |
| Ethyl bromide | 200 | 890 |
| Ethyl butyl ketone (e-Heptanone) | 50 | 230 |
| Ethyl chloride | 1,000 | 2,600 |
| Ethyl ether | 400 | 1,200 |
| Ethyl formate | 100 | 300 |
| Ethyl mercaptan | 10 | 25 |
| Ethyl silicate | 100 | 850 |
| Ethylene chlorohydrin-Skin | 5 | 16 |
| Ethylenediamine | 10 | 25 |
| Ethylene dibromide, see 1, 2-Dibromoethane | —- | —- |
| Ethylene dichloride, see 1, 2-Dichloroethane | —- | —- |
| Ethylene glycol dinitrate-Skin | 0.2 | 1.2 |
| Ethylene glycol monoethyl ether, see 2-Ethoxy ethanol | —- | —- |
| Ethylene glycol monomethyl ether, see Methyl cellosolve | —- | —- |
| Ethylene glycol monomethyl ether acetate, see Methyl cellosolve acetate | —- | —- |
| Ethylene imine-Skin | 0.5 | 1 |
| Ethylene oxide | 50 | 90 |
| Ethylidine chloride, see 1, 1-Dichloroethane | —- | —- |
| Ethyl methyl ketone, see 2-Butanone | —- | —- |
| N-Ethylmorpholine-Skin | 20 | 94 |
| Ferbam | —- | 15 |
| Ferrovanadium dust | —- | 1 |
| Fluoride (as F) | —- | 2.5 |
| Fluorine | 0.1 | 0.2 |
| Fluorotrichloromethane | 1,000 | 5,600 |
| Formaldehyde | 5 | 6 |
| Formic acid | 5 | 9 |
| Freon, see 1, 1, 1, 2-Tetrachloro-2, 2-difluoroethane | —- | —- |
| 1, 1, 2, 2-Tetrachloro-1, 2-difluoroethane | —- | —- |
| Freon 12, see Dicholoromonofluoromethane | —- | —- |
| Freon 114, see Dichlorotetrafluoroethane | —- | —- |
| Furfural-Skin | 5 | 20 |
| Furfuryl alcohol | 50 | 200 |
| Gasoline | —- | A 6 |
| Glycidol (2, 3-Epoxy-l-propanol) | 50 | 150 |
| Glycol monobutyl ether, see 2-Butoxy ethanol | —- | —- |
| Glycol monoethyl ether, see 2-Ethoxy-ethanol | —- | —- |
| Guthion, see Azinphos-methyl | —- | —- |
| Hafnium | —- | 0.5 |
| Heptacholor-Skin | —- | 0.5 |
| Heptane (n-heptane) | 500 | 2,000 |
| Hexachlorocyclorhexane, see Lindane | —- | —- |
| Hexacholoroethane-Skin | 1 | 10 |
| Hexane (n-hexane) | 500 | 1,800 |
| 2-Hexanone | 100 | 410 |
| Hexone | 100 | 410 |
| sec-Hexyl acetate | 50 | 300 |
| Hydrazine-Skin | 1 | 1.3 |
| Hydrobromic acid, see Hydrogen bromide | —- | —- |
| Hydrochloric acid, see Hydrogen chloride | —- | —- |
| Hydrocyanic acid, see Hydrogen cyanide | —- | —- |
| Hydrofluoric acid, see Hydrogen fluoride | —- | —- |
| Hydrogen bromide | 3 | 10 |
| Hydrogen chloride | 5 | 7 |
| Hydrogen cyanide-Skin | 10 | 11 |
| Hydrogen fluoride | 3 | 2 |
| Hydrogen peroxide, 90% | 1 | 1.4 |
| Hydrogen selenide | 0.05 | 0.2 |
| Hydrogensulfide | 10 | 15 |
| Hydroquinone | —- | 2 |
| Iodine | 0.1 | 1 |
| Iron oxide fume | —- | 10 |
| Isoamyl alcohol | 100 | 360 |
| Isoamylacetate | 100 | 525 |
| Isobutylacetate | 150 | 700 |
| Isophorone | 25 | 140 |
| Isopropyl acetate | 250 | 950 |
| Isopropylalcohol | 400 | 980 |
| Isopropylamine | 5 | 12 |
| Isopropylether | 500 | 2,100 |
| Isopropyl glycidyl ether (IGE) | 50 | 240 |
| Ketene | —- | 0.9 |
| Lead | —- | 0.2 |
| Lead arsenate | —- | 0.15 |
| Lime, see Calcium oxide | —- | —- |
| Lindane-Skin | —- | 0.5 |
| Lithium hydride | —- | 0.025 |
| L.P.G. (Liquified petroleum gas) | 1,000 | 1,800 |
| Magnesium oxide fume | —- | 15 |
| Malathion-Skin | —- | 15 |
| Manganese | —- | 5 |
| Mercury-Skin | —- | 0.1 |
| Mercury (organic compounds)-Skin | —- | 0.01 |
| Mesityl oxide | 25 | 100 |
| Methanethiol, see Methyl mercaptan | —- | —- |
| Methoxychlor | —- | 15 |
| 2-Methoxyethanol, see Methyl cellosolve | —- | —- |
| Methyl acetate | 200 | 610 |
| Methylacetylene(propyne) | 1,000 | 1,650 |
| Methyl acetylene-propadiene mixture (MAPP) | 1,000 | 1,800 |
| Methyl acrylate-Skin | 10 | 35 |
| Methylal (dimethoxymethane) | 1,000 | 3,100 |
| Methyl alcohol (Methanol) | 200 | 260 |
| Methylamine | 10 | 12 |
| Methyl amyl alcohol, see Methyl isobutyl carbinol | —- | —- |
| Methyl (n-amyl) ketone (2-Heptanone) | 100 | 465 |
| Methyl bromide-Skin | 20 | 80 |
| Methyl butyl ketone, see 2-Hexanone | —- | —- |
| Methyl cellosolve-Skin | 25 | 80 |
| Methyl cellosolve acetate-Skin | 25 | 120 |
| Methyl chloride | 100 | 210 |
| Methyl chloroform | 350 | 1,900 |
| Methyl cyanide, see Acetonitrile | —- | —- |
| Methylcyclohexane | 500 | 2,000 |
| Methylcyclohexanol | 100 | 470 |
| o-Methylcyclohexanone-Skin | 100 | 460 |
| Methyl ethyl ketone (MEK), see 2-Butanone | —- | —- |
| Methyl formate | 100 | 250 |
| Methyl iodide-Skin | 5 | 28 |
| Methyl isobutyl carbinol-Skin | 25 | 100 |
| Methyl isobutyl ketone, see Hexone | —- | —- |
| Methyl isocyanate-Skin | 0.02 | 0.05 |
| Methyl mercaptan | 10 | 20 |
| Methylmethacrylate | 100 | 410 |
| Methyl propyl ketone, see 2-Pentanone | —- | —- |
| o-Methylstyrene | 100 | 480 |
| Methylsulfate, see Dimethylsulfate | —- | —- |
| Methylene bisphenyl isocyanate (MDI) | 0.02 | 0.2 |
| Methylene chloride (Dichloromethane) | 500 | 1,740 |
| Molybdenum (soluble compounds) | —- | 5 |
| (insoluble compounds) | —- | 15 |
| Monomethyl aniline-Skin | 2 | 9 |
| Monomethyl hydrazine-Skin | 0.2 | 0.35 |
| Morpholine-Skin | 20 | 70 |
| Muriatic acide, see Hydrogen chloride | —- | —- |
| Naphtha (coal tar) | 200 | 800 |
| Naphthalene | 10 | 50 |
| B-Naphthylamine | —- | A 2 |
| 1-naphthyl N Methylcarbamate, see Carbaryl | —- | —- |
| NickelCarbonyl | 0.001 | 0.007 |
| Nickel, metal and soluble compounds | —- | 1 |
| Nicotine-Skin | —- | 0.5 |
| Nitric acid | 2 | 5 |
| Nitriles, see Cyanide | —- | —- |
| p-Nitroaniline-Skin | 1 | 6 |
| Nitrobenzene-Skin | 1 | 5 |
| p-Nitrochloro-benzene-Skin | —- | 1 |
| Nitroethane | 100 | 310 |
| Nitrogen dioxide | 5 | 9 |
| Nitrogen tetraoxide, see Nitrogen dioxide | —- | —- |
| Nitrogentrifluoride | 10 | 29 |
| Nitroglycerin-Skin | 0.2 | 2 |
| Nitromethane | 100 | 250 |
| 1-Nitropropane | 25 | 90 |
| 2-Nitropropane | 25 | 90 |
| N-Nitrosodimethyl-amine (Dimethyl nitrosoamine)-Skin | —- | A 3 |
| Nitrotoluene-Skin | 5 | 30 |
| Nitrotrichloromethane, see Chloropicrin | —- | —- |
| Octane | 500 | 2,350 |
| Oil mist (mineral) | —- | 5 |
| ortho-aminotoluene, see o-Toluidine | —- | —- |
| Osmium tetroxide | —- | 0.002 |
| Oxalic acid | —- | 1 |
| Oxygen difluoride | 0.05 | 0.1 |
| Ozone | 0.1 | 0.2 |
| Parathion-Skin | —- | 0.1 |
| PCP, see Pentachlorophenol | —- | —- |
| Pentaborane | 0.0005 | 0.01 |
| Pentachloronaphthelene-Skin | —- | 0.5 |
| Pentachlorophenol-Skin | —- | 0.5 |
| Pentane | 1,000 | 2,950 |
| 2-Pentanone | 200 | 700 |
| Perchloroethylene | 100 | 670 |
| Perchloromethyl mercaptan | 0.1 | 0.8 |
| Perchloryl fluoride | 3 | 13.5 |
| Petroleum distillates (naphtha) | 500 | 2,000 |
| Phenol-Skin | 5 | 19 |
| p-Phenylene diamine-Skin | —- | 0.1 |
| Phenyl ether (vapor) | 1 | 7 |
| Phenyl ether-Biphenyl mixture (vapor) | 1 | 7 |
| Phenylethylene, see Styrene | —- | —- |
| Phenylglycidylether(PGE) | 50 | 310 |
| Phenylhydrazine-Skin | 5 | 22 |
| Phosdrin (Mevinphos) (R)-Skin | —- | 0.1 |
| Phosgene (carbonyl chloride) | 0.1 | 0.4 |
| Phosphine | 0.3 | 0.4 |
| Phosphorus pentasulfide | —- | 1 |
| Phosphorus trichloride | 0.5 | 3 |
| Phthalic anhydride | 2 | 12 |
| Picric acid-Skin | —- | 0.1 |
| Pival (2-Pivalyl-1, 3-indandione) | —- | 0.1 |
| Platinum (Soluble salts) | —- | 0.002 |
| Polytetrafluoroethylene decomposition products | —- | A 4 |
| Propane | 1,000 | 1,800 |
| Propane oxide, see Prophylene oxide | —- | —- |
| B Propiolactone | —- | A 5 |
| n-Propyl acetate | 200 | 840 |
| n-Propyl nitrate | 25 | 110 |
| Propylene dichloride | 75 | 350 |
| Propylene imine-Skin | 2 | 5 |
| Propylene oxide | 100 | 240 |
| Propyne, see Methylacetylene | —- | —- |
| Pyrethrum | —- | 5 |
| Pyridine | 5 | 15 |
| Quieklime, see Calcium oxide | —- | —- |
| Quinone | 0.1 | 0.4 |
| Rhodium, Metal fume and dusts | —- | 0.1 |
| Soluble salts | —- | 0.001 |
| Rotenone (commercial) | —- | 5 |
| Selenium compounds(asSe) | —- | 0.2 |
| Selenium hexafluoride | 0.05 | 0.4 |
| Sevin (R), see Carbaryl | —- | —- |
| Silver, metal and soluble compounds | —- | 0.01 |
| Sodium fluoroacetate (1080)-Skin | —- | 0.05 |
| Sodium hydroxide | —- | 2 |
| Stibine | 0.1 | 0.5 |
| Stoddard solvent | 500 | 2,900 |
| Strychnine | —- | 0.15 |
| Styrene monomer (phenylethylene) | 100 | 420 |
| Sulfur dioxide | 5 | 13 |
| Sulfur hexafluoride | 1,000 | 6,000 |
| Sulfuric acid | —- | 1 |
| Sulfur monochloride | 1 | 6 |
| Sulfur pentafluoride | 0.025 | 0.25 |
| Sulfuryl fluoride | 5 | 20 |
| Systox, see Demeton | —- | —- |
| 2, 4, 5T | —- | 10 |
| Tantalum | —- | 5 |
| TCP, see Triorthocresyl phosphate | —- | —- |
| TDI, see Toluene-2, 4-diisocyanate | —- | —- |
| TEDP-Skin | —- | 0.2 |
| Teflon (R) decomposition products | —- | A 4 |
| TEL, see Tetraethyl lead (as Pb) | —- | —- |
| Tellurium | —- | 0.1 |
| Tellurium hexafluoride | 0.2 | 0.2 |
| TEPPSkin | —- | 0.05 |
| 1, 1, 2, 2-Tetrabromoethane, see Acetylene tetrabromide | —- | —- |
| 1, 1, 1, 2-Tetrachloro-2-difluoroethane | 500 | 4,170 |
| 1, 1, 2, 2-Tetrachloro-1, 2-difluoroethane | 500 | 4,170 |
| 1, 1, 2, 2-Tetrachloroethane-Skin | 5 | 35 |
| Tetrachloroethylene, see Perchloroethylene | —- | —- |
| Tetrachloromethane, see Carbon tetrachloride | —- | —- |
| Tetraethyl lead (as Pb)-Skin | —- | 0.075 |
| Tetraethyl pyrophosphate, see TEPP | —- | —- |
| Tetrahydrofuran | 200 | 590 |
| Tetramethyl lead (TML)(as lead)-Skin | —- | 0.075 |
| Tetramethyl succinonitrile- | 0.5 | 3 |
| Tetramethyl thiuram disulfide, see Thiram | —- | —- |
| Tetranitromethane | 1 | 8 |
| Tetryl (2, 4, 6trinitropheynylmethylnitramine) Skin | —- | 1.5 |
| Thallium (Soluble compounds)-Skin | —- | 0.1 |
| THF, see Tetrahydrofuran | —- | —- |
| Thiram | —- | 5 |
| Tin (inorganic compounds, except oxide) | —- | 2 |
| Tin (organic compounds) | —- | 0.1 |
| Titanium dioxide | —- | 15 |
| TMTD, see Thiram | —- | —- |
| TNT, see Trinitrotoluene | —- | —- |
| Toluene(toluol) | 200 | 750 |
| Toluene-2, 4-diisocyanate | 0.02 | 0.14 |
| o-Toluidine-Skin | 5 | 22 |
| Toxaphene, see Chlorinated camphene | —- | —- |
| TPP, see Triphenyl phosphate | —- | —- |
| 1, 1, 1-trichloro-2, 2-di(p-chlorophenyl) ethane, see DDT | —- | —- |
| 1, 1, 1-Trichloroethane, see Methyl chloroform | —- | —- |
| 1, 1, 2-Trichloroethane-Skin | 10 | 45 |
| Trichloroethylene | 100 | 535 |
| Trichloromethane, see Chloroform | —- | —- |
| Trichloromethylsulfenyl chloride, see Perchloromethyl mercaptan | —- | —- |
| Trichloronaphthalene-Skin | —- | 5 |
| Trichloronitro-methane, see Chloropicrin | —- | —- |
| 2, 4, 5-Trichlorophenoxyacetic acid, see 2, 4, ST | —- | —- |
| 1, 2, 3-Tichloropropane | 50 | 300 |
| 1, 1, 2-Trichloro-1, 2, 2 trifluoroethane | 1,000 | 7,600 |
| Triethylamine | 25 | 100 |
| Trifluoromonobromomethane | 1,000 | 6,100 |
| 2, 4, 6-Trinitrophenol, see Picric acid | —- | —- |
| 2, 4, 6-Trinitrophenylmethylnitramine, see Tetryl | —- | —- |
| Trinitrotoluene-Skin | —- | 1.5 |
| Triorthocresyl phosphate | —- | 0.1 |
| Triphenyl phosphate | —- | 3 |
| Turpentine | 100 | 560 |
| Uranium (Soluble compounds) | —- | 0.05 |
| (Insoluble compounds) | —- | 0.25 |
| Vanadic acid anhydride | ||
| see Vanadium (V205 dust) | —- | —- |
| see Vanadium (V205 fume) | —- | —- |
| Vanadium (V205 dust) | —- | 0.5 |
| (V205 fume) | —- | 0.1 |
| VC, see Vinyl chloride | —- | —- |
| Vinyl benzene, see Styrene | —- | —- |
| Vinyl chloride | 500 | 1,300 |
| Vinylcyanide, see Acrylonitrile | —- | —- |
| Vinyl toluene | 100 | 480 |
| Warfarin | —- | 0.1 |
| Wood alcohol, see Methyl alcohol | —- | —- |
| Xylene (xMl) | 100 | 435 |
| Xylidine-Skin | 5 | 25 |
| Yttrium | —- | 1 |
| Zinc oxide fume | —- | 5 |
| Zirconium compounds (as Zr) | —- | 5 |
RESPIRABLE DUSTS EVALUATED BY COUNT
| Substance | MPPCF |
|---|---|
| SILICA | |
| Crystalline | |
| Quartz, Maximum Acceptable Concentration calculated from the formula | 250 / (%SiO 2 + 5) |
| Cristobalite | " " " " |
| Amorphous, including natural diatomaceous earth | 20 |
| Tremolite | 5 |
| SILICATES (less than 1% crystalline silica), | |
| Asbestos | 5 |
| Mica | 20 |
| Soapstone | 20 |
| Talc | 20 |
| Portland Cement | 50 |
| GRAPHITE (natural) | 15 |
"Inert" or Nuisance Particulates 50 (or 15 mg/m3 whichever is the smaller), see Note B
Conversion factors
mppcf X 35.3 = million particles per cubic meter = particles per c.c.
NOTE A
| A 1 | Benzidine. Because of high incidence of bladder tumors in man, any exposure, including skin, is extremely hazardous. |
|---|---|
| A 2 | B-Naphthylamine. Because of the extremely high incidence of bladder tumors in workers handling this compound and the inability to control exposures, B-naphthlyamine has been prohibited by the State of Pennsylvania from manufacture, use and other activities that involve human contact. |
| A 3 | N-Nitrosodimethylamine. Because of extremely high toxicity and presumed carcinogenic potential of this compound, contact by any route should not be permitted. |
| A 4 | Polytetrafluoroethylene* decomposition products. Thermal decomposition of the fluorocarbon chain in air leads to the formation of oxidized products containing carbon, fluorine and oxygen. Because these products decompose in part by hydrolysis in alkaline solution, they can be quantitatively determined in air as fluoride to provide an index of exposure. No MAC is recommended pending determination of the toxicity of the products, but air concentrations should be minimal. |
| *Trade Names: Algoflon, Fluon, Halon, Teflon, Tetran. | |
| A 5 | B-Propiolactone. Because of high acute toxicity and demonstrated skin tumor production in animals, contact by any route should be avoided. |
| A 6 | Gasoline. The composition of gasoline varies greatly and thus a single MAC for all types of gasoline is no longer applicable. In general, the aromatic hydrocarbon content will determine what MAC applies. Consequently the content of benzene, other aromatics and additives should be determined to arrive at the appropriate MAC. |
NOTE B
Some "Inert" or Nuisance Particulates*
Alumdum (Al 2 O 3 )
Calcium Carbonate
Cellulose
Portland Cement
Corundum (Al 2 O 3 )
Emery
Glycerine Mist
Graphite (synthetic)
Gypsum
Limestone
Magnesite
Marble
Plaster of Paris
Rouge
Silicone Carbide
Starch
Sucrose
Tin oxide
Titanium Dioxide
Vegetable oil mists (except castor, cashew nut, or similar irritant oils)
*When toxic impurities are not present
APPENDIX 2 CROSS REFERENCE TABLE FOR ORDINANCE 7583
Sections of Ord. 7583 are listed alongside Los Angeles County Code Section numbers in which ordinance sections are codified.
Ord. 7583 LACC
Part 1
100 11.02.100
101 11.02.110
102 11.02.040
103 11.02.020
104 11.02.060
105 11.02.120
106 11.02.140
107 11.02.070
108 11.02.090
109 11.02.010
110 11.02.080
111 11.02.130
112 11.02.030
113 11.02.050
Part 2
200 11.04.010
201 11.04.020
202 11.04.030
203 11.04.040
204 11.04.050
205 11.04.060
206 11.04.070
207 11.04.080
208 11.04.090
209 11.04.100
210 11.04.110
211 11.04.120
212 11.04.130
213 11.04.140
214 11.04.150
215 11.04.160
216 11.04.170
217 11.04.180
218 11.04.200
219 11.04.210
220 11.04.220
221 11.04.230
222 11.04.240
223 11.04.250
224 11.04.260
225 11.04.270
226 11.04.280
227 11.04.290
228 11.04.190
Part 3
Ch.1
301 11.02.150
302 11.02.310
303 11.02.150
304 11.02.270
305 11.02.290
306 11.02.350
307 11.02.320
308 11.02.280
309 11.02.340
310 11.02.260
311 11.02.210
311.1 11.02.220
312 11.02.240
313 11.02.330
314 11.02.230
315 11.02.200
316 11.02.170
| 317 | 11.02.190 |
|---|---|
| 318 | 11.02.300 |
| 319 | 11.02.180 |
| 320 | 11.36.010—11.36.080 |
| 321 | 11.02.160 |
| Ch. 2 | |
| 350 | 11.12.210 |
| 351 | 11.12.030 |
| 352 | 11.12.010 |
| 353 | 11.12.040 |
| 354 | 11.12.050 |
| 355 | 11.12.120 |
| 356 | 11.12.090 |
| 357 | 11.12.100 |
| 358 | 11.12.160 |
| 359 | 11.12.190 |
| 360 | 11.12.110 |
| 361 | 11.12.180 |
| 362 | 11.12.200 |
| 364 | 11.12.060 |
| 365 | 11.12.250 |
| 366 | 11.12.260 |
| 367 | 11.12.220 |
| 368 | 11.12.300 |
| 369 | 11.12.320 |
| 370 | 11.12.330 |
| 371 | 11.12.290 |
| 372 | 11.12.070 |
| 373 | 11.12.080 |
| 374 | 11.12.230 |
| 375 | 11.12.240 |
| 376 | 11.12.270 |
| 377 | 11.12.390 |
| 378 | 11.12.370 |
| 378.1 | 11.12.380 |
| 379 | 11.12.130 |
| 380 | 11.12.170 |
| 381 | 11.12.280 |
| 382 | 11.12.020 |
| 383 | 11.12.140 |
| 384 | 11.12.150 |
| 385 | 11.12.350 |
| 386 | 11.12.340 |
| 387 | 11.12.360 |
| 388 | 11.12.310 |
| Ch. 3 | |
| 400 | 11.14.020 |
| 401 | 11.14.010 |
| 402 | 11.14.010 |
| 404 | 11.14.030 |
| Ch. 4 | |
| 450 | 11.18.010 |
| 451 | 11.18.010 |
| 452 | 11.18.060 |
| 453 | 11.18.040 |
| 454 | 11.18.080 |
| 455 | 11.18.030 |
| 456 | 11.18.050 |
| 457 | 11.18.070 |
| Ch. 5 | |
| 500 | 11.38.450 |
| 500.1 | 11.38.590 |
| 501 | 11.38.030 |
| 502 | 11.38.050 |
| 503 | 11.38.090 |
| 504 | 11.38.110 |
| 504.1 | 11.38.120 |
| 504.2 | 11.38.040 |
| 504.3 | 11.38.010 |
| 504.4 | 11.38.060 |
| 504.5 | 11.38.070 |
| 505 | 11.38.400 |
| 506 | 11.38.410 |
| 507 | 11.38.130 |
| 508 | 11.38.140 |
| 509 | 11.38.360 |
| 510 | 11.38.430 |
| 511 | 11.38.440 |
| 512 | 11.38.350 |
| 513 | 11.38.280 |
| 514 | 11.38.370 |
| 515 | 11.38.320 |
| 516 | 11.38.190 |
| 517 | 11.38.210 |
| 518 | 11.38.200 |
| 519 | 11.38.290 |
| 520 | 11.38.230 |
| 520.1 | 11.38.240 |
| 521 | 11.38.250 |
| 522 | 11.38.300 |
| 523 | 11.38.150 |
| 523.1 | 11.38.260 |
| 523.2 | 11.38.160 |
| 523.3 | 11.38.170 |
| 523.4 | 11.38.180 |
| 524 | 11.38.330 |
| 524.1 | 11.38.340 |
| 525 | 11.38.220 |
| 525.1 | 11.38.270 |
| 526 | 11.38.310 |
| 527 | 11.38.380 |
| 528 | 11.38.390 |
| 528.1 | 11.38.420 |
| 528.2 | 11.38.480 |
| 529 | 11.38.100 |
| 530 | 11.38.080 |
| 531 | 11.38.020 |
| 532 | 11.38.570 |
| 532.1 | 11.38.580 |
| 533 | 11.38.560 |
| 534 | 11.38.520 |
| 535 | 11.38.500 |
| 535.1 | 11.38.540 |
| 536 | 11.38.510 |
| 537 | 11.38.490 |
| 538 | 11.38.530 |
| 539 | 11.38.550 |
| 540 | 11.38.600 |
| 541 | 11.38.470 |
| 542 | 11.38.460 |
| 543 | 11.38.610 |
| Ch. 6 | |
| 550 | 11.32.010 |
| 551 | 11.32.020 |
| 552 | 11.32.020 |
| 553 | 11.32.030 |
| 554 | 11.32.020 |
| 555 | 11.32.010 |
| 556 | 11.32.100 |
| 557 | 11.32.120 |
| 558 | 11.32.130 |
| 559 | 11.32.020 |
| 560 | 11.32.150 |
| 561 | 11.32.160 |
| 561.1 | 11.32.180 |
| 561.2 | 11.32.170 |
| 562 | 11.32.020 |
| 563 | 11.32.020 |
| 564 | 11.32.050 |
| 565 | 11.32.040 |
| 566 | 11.32.140 |
| 567 | 11.32.070 |
| 568 | 11.32.060 |
| 569 | 11.32.090 |
| 570 | 11.32.080 |
| Ch. 7 | |
| 600 | 11.16.050 |
| 601 | 11.16.030 |
| 602 | 11.16.040 |
| 603 | 11.16.060 |
| 604 | 11.16.110 |
| 605 | 11.16.020 |
| 606 | 11.16.100 |
| 607 | 11.16.120 |
| 608 | 11.16.090 |
| 609 | 11.16.080 |
| 610 | 11.16.070 |
| 611 | 11.16.010 |
| Ch. 8 | |
| 625 | 11.30.020 |
| 626 | 11.30.040 |
| 627 | 11.30.050 |
| 628 | 11.30.010 |
| 629 | 11.30.030 |
| 630 | 11.30.080 |
| 631 | 11.30.070 |
| 632 | 11.30.060 |
| Ch. 9 | |
| 700 | 11.08.010 |
| 701 | 11.08.020 |
| 702 | 11.08.050 |
| 703 | 11.08.060 |
| 704 | 11.08.070 |
| 705 | 11.08.090 |
| 706 | 11.08.080 |
| 707 | 11.08.100 |
| 708 | 11.08.040 |
| 709 | 11.08.030 |
| Ch. 10 | |
| 750 | Repealed by 98-0037 |
| 751 | 11.06.020 |
| Ch. 11 | |
| 800 | 11.20.150 |
| 801 | 11.20.030 |
| 802 | 11.20.060 |
| 803 | 11.20.050 |
| 804 | 11.20.040 |
| 804.1 | 11.20.010 |
| 804.2 | 11.20.070 |
| 804.3 | 11.20.080 |
| 804.4 | 11.20.110 |
| 805 | 11.20.090 |
| 806 | 11.20.130 |
| 807 | 11.20.250 |
| 808 | 11.20.340 |
| 809 | 11.20.140 |
| 810 | 11.20.020 |
| 811 | 11.20.120 |
| 812 | 11.20.100 |
| 813 | 11.20.330 |
| 814 | 11.20.280 |
| 815 | 11.20.290 |
| 816 | 11.20.300 |
| 817 | 11.20.180 |
| 818 | 11.20.260 |
| 818.5 | 11.20.270 |
| 819 | 11.20.190 |
| 820 | 11.20.160 |
| 821 | 11.20.210 |
| 821.1 | 11.20.200 |
| 822 | 11.20.220 |
| 823 | 11.20.230 |
| 824 | 11.20.240 |
| 825 | 11.20.310 |
| 826 | 11.20.170 |
| 827 | 11.20.410 |
| 828 | 11.20.390 |
| 829 | 11.20.350 |
| 830 | 11.20.380 |
| 831 | 11.20.320 |
| 832 | 11.20.370 |
| 833 | 11.20.400 |
| 834 | 11.20.360 |
| Ch. 12 | |
| 850 | 11.24.010 |
| 851 | 11.24.020 |
| 852 | 11.24.020 |
| 853 | 11.24.020 |
| 854 | 11.24.020 |
| 855 | 11.24.020 |
| 856 | 11.24.020 |
| 857 | 11.24.020 |
| 858 | 11.24.170 |
| 859 | 11.24.030 |
| 860 | 11.24.140 |
| 861 | 11.24.160 |
| 862 | 11.24.150 |
| 863 | 11.24.110 |
| 864 | 11.24.180 |
| 865 | 11.24.120 |
| 866 | 11.24.090 |
| 867 | 11.24.080 |
| 868 | 11.24.040 |
| 869 | 11.24.050 |
| 870 | 11.24.070 |
| 871 | 11.24.130 |
| 872 | 11.24.060 |
| 873 | 11.24.370—11.24.430 |
| 874 | 11.24.300—11.24.360 |
| 875 | 11.24.200 |
| 876 | 11.24.210 |
| 877 | 11.24.220—11.24.290 |
| 878 | 11.24.190 |
| 879 | 11.24.100 |
| Ch. 13 | |
| 900 | 11.10.010 |
| 901 | 11.10.020 |
| 902 | 11.10.120 |
| 903 | 11.10.110 |
| 904 | 11.10.060 |
| 905 | 11.10.060 |
| 906 | 11.10.080 |
| 907 | 11.10.070 |
| 908 | 11.10.050 |
| 909 | 11.10.090 |
| 910 | 11.10.100 |
| 911 | 11.10.030 |
| 912 | 11.10.130 |
| Ch. 14 | |
| 1000 | 11.34.030 |
| 1000.1 | 11.34.100 |
| 1001 | 11.34.010 |
| 1002 | 11.34.010 |
| 1003 | Repealed by 91-0099 |
| 1004 | Repealed by 91-0099 |
| 1005 | Repealed by 91-0099 |
| 1006 | Repealed by 91-0099 |
| 1007 | Repealed by 91-0099 |
| 1008 | 11.34.040 |
| 1009 | 11.34.050 |
| 1010 | Repealed by 91-0099 |
| 1011 | 11.34.060 |
| 1012 | 11.34.070 |
| 1013 | 11.34.080 |
| 1014 | 11.34.140 |
| 1015 | 11.34.090 |
| 1016 | 11.34.130 |
| 1017 | Repealed by 91-0099 |
| 1018 | 11.34.110 |
| 1019 | 11.34.150 |
| 1020 | 11.34.160 |
| 1021 | 11.34.170 |
| 1022 | 11.34.120 |
| 1023 | 11.34.180 |
| 1024 | 11.34.190 |
| 1025 | 11.34.200 |
| 1026 | 11.34.210 |
| 1027 | 11.34.220 |
| 1028 | 11.34.230 |
| Ch. 15 | |
| 1070 | 11.26.010 |
| 1071 | 11.26.020 |
| 1072 | 11.26.030 |
| 1073 | 11.26.040 |
| Ch. 16 | |
| 1100 | 11.22.010 |
| 1101 | 11.22.020 |
| 1102 | 11.22.030 |
| 1103 | 11.22.040 |
| 1104 | 11.22.050 |
| 1105 | 11.22.060 |
| 1106 | 11.22.070 |
| 1107 | 11.22.080 |
| 1108 | 11.22.090 |
| 1109 | 11.22.100 |
| 1110 | 11.22.110 |
| 1111 | 11.22.120 |
| 1112 | 11.22.130 |
| 1113 | 11.22.140 |
| 1114 | 11.22.150 |
| 1115 | 11.22.160 |
| 1116 | 11.22.180 |
| 1117 | 11.22.190 |
| 1118 | 11.22.200 |
| 1119 | 11.22.210 |
| 1120 | 11.22.220 |
| 1121 | 11.22.170 |
| 1122 | 11.22.230 |
| 1123 | 11.22.240 |
| 1124 | 11.22.250 |
| 1125 | 11.22.260 |
| 1126 | 11.22.270 |
| 1127 | 11.22.280 |
| 1128 | 11.22.310 |
| 1129 | 11.22.300 |
| 1130 | 11.22.320 |
| 1131 | 11.22.330 |
| 1132 | 11.22.340 |
| 1133 | 11.22.290 |
| 1134 | 11.22.350 |
| 1135 | 11.22.360 |
| 1136 | 11.22.370 |
| 1137 | 11.22.380 |
| 1138 | 11.22.410 |
| 1139 | 11.22.400 |
| 1140 | 11.22.390 |
| 1141 | 11.22.450 |
| 1142 | 11.22.460 |
| 1143 | 11.22.480 |
| 1144 | 11.22.470 |
| 1145 | 11.22.490 |
| 1146 | 11.22.420 |
| 1147 | 11.22.440 |
| 1148 | 11.22.430 |
| 1149 | 11.22.700 |
| 1150 | 11.22.710 |
| 1151 | 11.22.720 |
| 1152 | 11.22.730 |
| 1153 | 11.22.740 |
| 1154 | 11.22.610 |
| 1155 | 11.22.650 |
| 1156 | 11.22.660 |
| 1157 | 11.22.670 |
| 1158 | 11.22.680 |
| 1159 | 11.22.630 |
| 1160 | 11.22.640 |
| 1161 | 11.22.510 |
| 1162 | 11.22.690 |
| 1163 | 11.22.500 |
| 1164 | 11.22.520 |
| 1165 | 11.22.550 |
| 1166 | 11.22.530 |
| 1167 | 11.22.540 |
| 1168 | 11.22.590 |
| 1169 | 11.22.560 |
| 1170 | 11.22.580 |
| 1171 | 11.22.570 |
| 1172 | 11.22.600 |
| 1173 | 11.22.750 |
| 1174 | 11.22.760 |
| 1175 | 11.22.770 |
| 1176 | 11.22.800 |
| 1177 | 11.22.810 |
| 1178 | 11.22.830 |
| 1179 | 11.22.820 |
| 1180 | 11.22.840 |
| 1181 | 11.22.780 |
| 1182 | 11.22.790 |
| 1183 | 11.22.850 |
| 1184 | 11.22.860 |
| 1185 | 11.22.870 |
| 1186 | 11.22.910 |
| 1187 | 11.22.920 |
| 1188 | 11.22.880 |
1189 11.22.890
1190 11.22.900
1191 11.22.620
Ch. 17
1200 11.28.010
1201 11.28.010
1202 11.28.010
1203 11.28.010
1204 11.28.010
1205 11.28.020
1206 11.28.030
1207 11.28.040
1208 11.28.050
1209 11.28.060
1210 11.28.010
Part 10
10001 Not codified
10002 Not codified
10003 Not codified
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