| Cobalt | 184.80 |
| Chromium | 75.50 |
| 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.) | 46.07 |
| Trichloroethylene | 18.18 |
| Formaldehyde | 9.35 |
| Nickel compounds | 8.58 |
| Nickel | 7.68 |
| Cadmium compounds | 3.06 |
| Benzene | 1.72 |
| Chloroform | 0.80 |
| Toluene diisocyanate (mixed isomers) | 0.63 |
| Polycyclic aromatic compounds | 0.39 |
| Dichloromethane (Methylene chloride) | 0.31 |
| Diisocyanates | 0.30 |
| Chlorine | 0.27 |
| Copper | 0.18 |
| Xylene (mixed isomers) | 0.10 |
| Ethylbenzene | 0.08 |
| Naphthalene | 0.04 |
| Lead | 0.04 |
| n-Hexane (Hexane) | 0.02 |
| Certain glycol ethers | 0.02 |
| Phenol | 0.02 |
| Lead compounds | 0.02 |
| 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) | 0.01 |
| Antimony compounds | 0.01 |
| Nitric acid | 0.01 |
| Acetonitrile | 0.01 |
| Butyl acrylate | 0.01 |
| Zinc compounds | 0.01 |
| Manganese | 0.01 |
| Toluene | 0.01 |
| Maleic anhydride | 0.00 |
| Cyanide compounds | 0.00 |
| Silver compounds | 0.00 |
| 1,2,4-Trimethylbenzene | 0.00 |
| Acrylic acid | 0.00 |
| Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| Propylene oxide | 0.00 |
| Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.00 |
| Methanol | 0.00 |
| Aluminum (fume or dust) | 0.00 |
| Methyl methacrylate | 0.00 |
| Zinc (fume or dust) | 0.00 |
| Styrene | 0.00 |
| Vinyl acetate | 0.00 |
| Methyl isobutyl ketone | 0.00 |
| Mercury | 0.00 |
| Ethylene glycol | 0.00 |
| Benzo[g,h,i]perylene | 0.00 |
| Silver | 0.00 |
| Cyclohexane | 0.00 |
| n-Butyl alcohol (1-Butanol) | 0.00 |
| Ethyl acrylate | 0.00 |
| Cumene | 0.00 |
| tert-Butyl alcohol (tert-Butanol) | 0.00 |
| Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| Benzoyl peroxide | 0.00 |
| Di(2-ethylhexyl) phthalate | 0.00 |
| N-Methyl-2-pyrrolidone | 0.00 |
| Nonylphenol Ethoxylates | 0.00 |
