| Cobalt | 385.70 |
| Chromium compounds (except for chromite ore mined in the Transvaal Region of South Africa and the unreacted ore component of the chromite ore processing residue (COPR). COPR is the solid waste remaining after aqueous extraction of oxidized chromite ore that has been combined with soda ash and kiln roasted at approximately 2,000 F.) | 227.11 |
| Chromium | 126.51 |
| Trichloroethylene | 14.44 |
| Nickel | 12.12 |
| Cadmium compounds | 9.42 |
| Polycyclic aromatic compounds | 7.61 |
| Nickel compounds | 6.84 |
| Benzene | 4.13 |
| Diisocyanates | 4.06 |
| Chloroform | 3.41 |
| Toluene diisocyanate (mixed isomers) | 3.38 |
| Formaldehyde | 1.92 |
| Di(2-ethylhexyl) phthalate | 0.62 |
| Chlorine | 0.52 |
| Antimony compounds | 0.49 |
| Certain glycol ethers | 0.45 |
| Xylene (mixed isomers) | 0.25 |
| Acrylonitrile | 0.24 |
| Copper | 0.18 |
| Naphthalene | 0.07 |
| Dichloromethane (Methylene chloride) | 0.06 |
| Ethylbenzene | 0.05 |
| Lead | 0.04 |
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.04 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.03 |
| Ammonia (includes anhydrous ammonia and aqueous ammonia from water dissociable ammonium salts and other sources; 10 percent of total aqueous ammonia is reportable under this listing) | 0.03 |
| Nitric acid | 0.03 |
| Acetonitrile | 0.03 |
| Lead compounds | 0.03 |
| Triethylamine | 0.03 |
| Butyl acrylate | 0.02 |
| Zinc compounds | 0.02 |
| Cyanide compounds | 0.01 |
| Maleic anhydride | 0.01 |
| Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.01 |
| Manganese | 0.01 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.01 |
| N,N-Dimethylformamide | 0.01 |
| 1,2,4-Trimethylbenzene | 0.01 |
| n-Hexane (Hexane) | 0.01 |
| Phenol | 0.01 |
| Silver compounds | 0.00 |
| Acrylic acid | 0.00 |
| Methyl methacrylate | 0.00 |
| Styrene | 0.00 |
| Pyridine | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 0.00 |
| Acetophenone | 0.00 |
| Toluene | 0.00 |
| Toluene-2,4-diisocyanate | 0.00 |
| Mercury | 0.00 |
| Vinyl acetate | 0.00 |
| Methanol | 0.00 |
| Ethylene glycol | 0.00 |
| Silver | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Propylene oxide | 0.00 |
| Ethyl acrylate | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Cyclohexane | 0.00 |
| Cumene | 0.00 |
| Formic acid | 0.00 |
| 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
