| CLEVELAND-CLIFFS WEIRTON LLC | WEIRTON | WV | 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.) | 1,400 | 0 | 21,000,000 | 19.81% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Chromium | 901 | 0 | 13,515,000 | 12.75% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Diethanolamine | 24,000 | 0 | 12,000,000 | 11.32% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Sodium nitrite | 1,182,010 | 0 | 11,820,100 | 11.15% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 12,191,515 | 0 | 7,680,654 | 7.25% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | 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.) | 265 | 0 | 3,975,000 | 3.75% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Vanadium compounds | 239 | 0 | 3,346,000 | 3.16% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | 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.) | 195 | 0 | 2,925,000 | 2.76% | |
| CLEVELAND-CLIFFS STEEL CORP DEARBORN WORKS | DEARBORN | MI | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 1,782 | 0 | 2,673,000 | 2.52% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 1,555 | 0 | 2,332,500 | 2.20% | |
| CLEVELAND-CLIFFS STEEL CORP | COSHOCTON | OH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3,617,427 | 0 | 2,278,980 | 2.15% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Lead compounds | 103 | 0 | 1,851,300 | 1.75% | |
| I/N KOTE | NEW CARLISLE | IN | Lead compounds | 0 | 87 | 1,565,281 | 1.48% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Arsenic | 1 | 0 | 1,500,000 | 1.42% | |
| CLEVELAND-CLIFFS STEEL CORP | COSHOCTON | OH | 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.) | 95 | 0 | 1,425,000 | 1.34% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Lead compounds | 78 | 0 | 1,404,000 | 1.32% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | Lead compounds | 71 | 0 | 1,278,000 | 1.21% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Lead compounds | 68 | 0 | 1,222,200 | 1.15% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Lead compounds | 62 | 0 | 1,116,000 | 1.05% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Lead compounds | 59 | 0 | 1,069,560 | 1.01% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | 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.) | 55 | 0 | 825,000 | 0.78% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | 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.) | 48 | 0 | 720,000 | 0.68% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Lead compounds | 14 | 26 | 720,000 | 0.68% | |
| CLEVELAND-CLIFFS MONESSEN COKE LLC | MONESSEN | PA | Hydrogen sulfide | 336 | 0 | 604,800 | 0.57% | |
| CLEVELAND-CLIFFS WEIRTON LLC | WEIRTON | WV | Cyanide compounds | 2,500 | 0 | 500,000 | 0.47% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | 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.) | 7 | 26 | 495,000 | 0.47% | |
| CLEVELAND-CLIFFS MONESSEN COKE LLC | MONESSEN | PA | Cyanide compounds | 2,185 | 0 | 437,000 | 0.41% | |
| CLEVELAND-CLIFFS STEEL CORP DEARBORN WORKS | DEARBORN | MI | Lead compounds | 23 | 0 | 421,200 | 0.40% | |
| MOUNTAIN STATE CARBON LLC | FOLLANSBEE | WV | Polycyclic aromatic compounds | 2 | 0 | 360,000 | 0.34% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Vanadium (except when contained in an alloy) | 25 | 0 | 350,980 | 0.33% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Cyanide compounds | 1,500 | 0 | 300,000 | 0.28% | |
| CLEVELAND-CLIFFS WEIRTON LLC | WEIRTON | WV | Lead | 16 | 0 | 291,600 | 0.28% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | 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.) | 19 | 0 | 285,000 | 0.27% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Lead compounds | 14 | 0 | 252,000 | 0.24% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | 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.) | 16 | 0 | 240,000 | 0.23% | |
| MOUNTAIN STATE CARBON LLC | FOLLANSBEE | WV | Lead compounds | 13 | 0 | 234,000 | 0.22% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Molybdenum trioxide | 612 | 0 | 232,560 | 0.22% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 151 | 0 | 226,500 | 0.21% | |
| IRONUNITS LLC | TOLEDO | OH | Lead | 11 | 1 | 213,300 | 0.20% | |
| I/N KOTE | NEW CARLISLE | IN | Zinc compounds | 0 | 51,369 | 169,518 | 0.16% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 92 | 0 | 138,000 | 0.13% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Cyanide compounds | 685 | 0 | 137,000 | 0.13% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Chromium | 9 | 0 | 127,950 | 0.12% | |
| CLEVELAND-CLIFFS MONESSEN COKE LLC | MONESSEN | PA | Benzene | 2 | 0 | 110,000 | 0.10% | |
| CLEVELAND-CLIFFS PLATE LLC CONSHOHOCKEN FACILITY | CONSHOHOCKEN | PA | Lead compounds | 6 | 0 | 107,460 | 0.10% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Manganese compounds | 15,030 | 0 | 106,713 | 0.10% | |
| CLEVELAND-CLIFFS MONESSEN COKE LLC | MONESSEN | PA | Polycyclic aromatic compounds | 1 | 0 | 90,000 | 0.08% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 125,648 | 0 | 79,158 | 0.07% | |
| CLEVELAND-CLIFFS PLATE LLC CONSHOHOCKEN FACILITY | CONSHOHOCKEN | PA | Chromium | 5 | 0 | 75,000 | 0.07% | |
| CLEVELAND-CLIFFS STEEL CORP - ZANESVI LLE WORKS | ZANESVILLE | OH | 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.) | 5 | 0 | 75,000 | 0.07% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 48 | 0 | 72,000 | 0.07% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 6 | 41 | 70,500 | 0.07% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Cyanide compounds | 310 | 0 | 62,000 | 0.06% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | 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.) | 4 | 0 | 60,000 | 0.06% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0 | 92,967 | 58,569 | 0.06% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 92,000 | 0 | 57,960 | 0.05% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 37 | 0 | 55,500 | 0.05% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Selenium compounds | 273 | 0 | 54,600 | 0.05% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Lead | 3 | 0 | 48,600 | 0.05% | |
| CLEVELAND-CLIFFS STEEL CORP DEARBORN WORKS | DEARBORN | MI | Nickel compounds | 484 | 0 | 44,053 | 0.04% | |
| I/N KOTE | NEW CARLISLE | IN | Nickel compounds | 0 | 457 | 41,543 | 0.04% | |
| MOUNTAIN STATE CARBON LLC | FOLLANSBEE | WV | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 61,000 | 0 | 38,430 | 0.04% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Selenium compounds | 180 | 0 | 36,000 | 0.03% | |
| CLEVELAND-CLIFFS STEEL CORP DEARBORN WORKS | DEARBORN | MI | Manganese compounds | 4,768 | 0 | 33,850 | 0.03% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Nickel compounds | 345 | 0 | 31,395 | 0.03% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Mercury compounds | 3 | 0 | 30,000 | 0.03% | |
| CLEVELAND-CLIFFS STEEL CORP | COSHOCTON | OH | Nickel compounds | 305 | 0 | 27,755 | 0.03% | |
| IRONUNITS LLC | TOLEDO | OH | Sodium nitrite | 2,463 | 291 | 27,541 | 0.03% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 41,188 | 0 | 25,948 | 0.02% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 14 | 0 | 21,000 | 0.02% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Nickel | 188 | 0 | 17,108 | 0.02% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | Nickel compounds | 168 | 0 | 15,288 | 0.01% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Nickel compounds | 149 | 0 | 13,559 | 0.01% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Manganese compounds | 1,836 | 0 | 13,036 | 0.01% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Lead | 1 | 0 | 11,304 | 0.01% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | Cyanide compounds | 27 | 29 | 11,226 | 0.01% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | Manganese compounds | 1,439 | 0 | 10,217 | 0.01% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Thallium | 1 | 0 | 7,980 | 0.01% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Zinc compounds | 2,000 | 0 | 6,600 | 0.01% | |
| CLEVELAND-CLIFFS COLUMBUS LLC | COLUMBUS | OH | Lead compounds | 0 | 0 | 6,480 | 0.01% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | Manganese compounds | 907 | 0 | 6,440 | 0.01% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | Lead compounds | 0 | 0 | 6,300 | 0.01% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | Lead compounds | 0 | 0 | 6,300 | 0.01% | |
| CLEVELAND-CLIFFS STEEL CORP - ZANESVI LLE WORKS | ZANESVILLE | OH | Mercury compounds | 0 | 0 | 4,900 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Nickel compounds | 50 | 0 | 4,550 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Manganese compounds | 640 | 0 | 4,544 | 0.00% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Nickel compounds | 4 | 40 | 4,004 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 733 | 0 | 3,665 | 0.00% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Phenol | 1,038 | 0 | 3,425 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Phenol | 1,000 | 0 | 3,300 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Zinc compounds | 1,000 | 0 | 3,300 | 0.00% | |
| I/N KOTE | NEW CARLISLE | IN | Manganese compounds | 0 | 456 | 3,237 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Phenol | 910 | 0 | 3,003 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | Mercury | 0 | 0 | 2,500 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP - ZANESVI LLE WORKS | ZANESVILLE | OH | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3,871 | 0 | 2,439 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | Chlorine | 227 | 0 | 2,270 | 0.00% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 3,459 | 0 | 2,179 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP | COSHOCTON | OH | Manganese compounds | 304 | 0 | 2,158 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Zinc compounds | 598 | 0 | 1,973 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Lead compounds | 0 | 0 | 1,800 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Copper | 1 | 0 | 1,725 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP DEARBORN WORKS | DEARBORN | MI | Zinc compounds | 466 | 0 | 1,539 | 0.00% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 1 | 0 | 1,500 | 0.00% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Zinc compounds | 332 | 0 | 1,096 | 0.00% | |
| CLEVELAND-CLIFFS PLATE LLC CONSHOHOCKEN FACILITY | CONSHOHOCKEN | PA | Nickel | 10 | 0 | 910 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP - ZANESVI LLE WORKS | ZANESVILLE | OH | Nickel compounds | 9 | 0 | 819 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Mercury compounds | 0 | 0 | 800 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Antimony | 0 | 0 | 725 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Mercury compounds | 0 | 0 | 600 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Nickel compounds | 6 | 0 | 546 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | Mercury compounds | 0 | 0 | 530 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Nickel | 5 | 0 | 460 | 0.00% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Manganese compounds | 64 | 0 | 454 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Zinc compounds | 130 | 0 | 429 | 0.00% | |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Manganese compounds | 47 | 0 | 334 | 0.00% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | Dioxin and dioxin-like compounds (Manufacturing; and the processing or otherwise use of dioxin and dioxin like compounds if the dioxin and dioxin like compounds are present as contaminants in a chemical and if they were created during the manufacturing of that chemical.) | 0 | 0 | 326 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Manganese | 45 | 0 | 321 | 0.00% | |
| CLEVELAND-CLIFFS RIVERDALE LLC | RIVERDALE | IL | Zinc compounds | 29 | 63 | 304 | 0.00% | |
| DOUBLE G COATINGS CO LP | JACKSON | MS | Manganese | 0 | 33 | 234 | 0.00% | 50% |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Mercury | 0 | 0 | 200 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Manganese compounds | 27 | 0 | 192 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP /BUTLER WORKS | BUTLER | PA | Zinc compounds | 57 | 0 | 188 | 0.00% | |
| CLEVELAND-CLIFFS COLUMBUS LLC | COLUMBUS | OH | Zinc compounds | 24 | 22 | 151 | 0.00% | |
| CLEVELAND-CLIFFS PLATE LLC CONSHOHOCKEN FACILITY | CONSHOHOCKEN | PA | Manganese | 17 | 0 | 121 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Mercury | 0 | 0 | 100 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP - MANSFIELD WORKS | MANSFIELD | OH | Nickel compounds | 1 | 0 | 91 | 0.00% | |
| DOUBLE G COATINGS CO LP | JACKSON | MS | Zinc compounds | 0 | 25 | 83 | 0.00% | 50% |
| CLEVELAND-CLIFFS PLATE LLC COATESVILLE FACILITY | COATESVILLE | PA | Mercury compounds | 0 | 0 | 65 | 0.00% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | Naphthalene | 0 | 1 | 50 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Barium | 8 | 0 | 41 | 0.00% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | Mercury | 0 | 0 | 30 | 0.00% | |
| CLEVELAND-CLIFFS STEELTON LLC | STEELTON | PA | Zinc compounds | 3 | 0 | 10 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | Phenol | 0 | 2 | 7 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP | COSHOCTON | OH | Mercury compounds | 0 | 0 | 5 | 0.00% | |
| CLEVELAND-CLIFFS MONESSEN COKE LLC | MONESSEN | PA | 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) | 12 | 0 | 0 | 0.00% | |
| MOUNTAIN STATE CARBON LLC | FOLLANSBEE | WV | 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) | 310 | 0 | 0 | 0.00% | |
| IRONUNITS LLC | TOLEDO | OH | 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) | 718 | 85 | 0 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC | CLEVELAND | OH | 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) | 2,232 | 0 | 0 | 0.00% | |
| CLEVELAND-CLIFFS CLEVELAND WORKS LLC DBA CLEVELAND-CLIFFS WA | WARREN | OH | 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) | 1,926 | 812 | 0 | 0.00% | |
| CLEVELAND-CLIFFS INC. | MIDDLETOWN | OH | 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) | 5,910 | 357 | 0 | 0.00% | |
| CLEVELAND-CLIFFS BURNS HARBOR LLC | BURNS HARBOR | IN | 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) | 4,394 | 0 | 0 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | 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) | 3,000 | 0 | 0 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | 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) | 1,500 | 0 | 0 | 0.00% | |
| CLEVELAND-CLIFFS STEEL LLC | EAST CHICAGO | IN | Nonylphenol Ethoxylates | 25,000 | 0 | 0 | 0.00% | |
| CLEVELAND-CLIFFS STEEL CORP (ROCKPORT WORKS ) | ROCKPORT | IN | 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) | 3,818 | 0 | 0 | 0.00% | |
| ARCELORMITTAL TEXAS HBI LLC | PORTLAND | TX | Cobalt | 2 | 0 | 0 | 0.00% | |
