| BETE FOG NOZZLE INC. | BETE FOG NOZZLE INC. | Chromium | 35.04 |
| ISOMEDIX OPERATIONS INC. | STERIS | Ethylene oxide | 15.97 |
| HITCHINER COUNTERGRAVITY CAST OPERATIONS (VCO/DCO/MCT) | HITCHINER MANUFACTURING CO INC | Cobalt | 11.56 |
| LS STARRETT CO | MiddleGround Capital | Trichloroethylene | 11.06 |
| BETE FOG NOZZLE INC. | BETE FOG NOZZLE INC. | Nickel | 2.90 |
| AVIENT COLORANTS USA LLC - HOLDEN FACILITY | Avient Corporation | 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.) | 2.18 |
| HITCHINER COUNTERGRAVITY CAST OPERATIONS (VCO/DCO/MCT) | HITCHINER MANUFACTURING CO INC | Nickel | 1.73 |
| CHROMA COLOR CORP | Arsenal Capital Partners | 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.) | 1.54 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Dicyclopentadiene | 1.51 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Maleic anhydride | 1.38 |
| INNER-TITE CORP. | INNER-TITE CORP. | Chromium | 1.33 |
| KOMTEK FORGE LLC | Crawford United | Chromium | 0.62 |
| METSO AUTOMATION USA INC | Valmet Oyj | Chromium | 0.55 |
| HITCHINER COUNTERGRAVITY CAST OPERATIONS (VCO/DCO/MCT) | HITCHINER MANUFACTURING CO INC | Chromium | 0.53 |
| KOMTEK FORGE LLC | Crawford United | Nickel | 0.31 |
| SEAMAN PAPER CO. OF MASSACHUSETTS INC. | SEAMAN PAPER CO. OF MASSACHUSETTS INC. | Polycyclic aromatic compounds | 0.24 |
| WHIPPS INC | WHIPPS INC | Chromium | 0.24 |
| WYMAN-GORDON CO | Berkshire Hathaway | Nickel | 0.14 |
| OMNOVA SOLUTIONS | Synthomer | Acrylonitrile | 0.14 |
| PALMER FOUNDRY INC | PALMER FOUNDRY INC | Diisocyanates | 0.11 |
| NEWARK AMERICA | Greif Inc. | Peracetic acid | 0.11 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Antimony compounds | 0.10 |
| COORSTEK IGNITER PRODUCTS | COORSTEK INC | Nickel | 0.10 |
| WYMAN-GORDON CO | Berkshire Hathaway | Chromium | 0.10 |
| EMD MILLIPORE CORP | Merck KGaA (EMD) | Dichloromethane (Methylene chloride) | 0.10 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Antimony compounds | 0.03 |
| WHIPPS INC | WHIPPS INC | Nickel | 0.02 |
| METSO AUTOMATION USA INC | Valmet Oyj | Nickel | 0.02 |
| VERANOVA L.P. | Altaris Capital Partners | Dichloromethane (Methylene chloride) | 0.01 |
| WYMAN-GORDON CO | Berkshire Hathaway | Nickel | 0.01 |
| OMNOVA SOLUTIONS | Synthomer | Butyl acrylate | 0.01 |
| HART & COOLEY LLC | Egeria Investments | Chromium | 0.01 |
| PEXCO LLC | Odyssey Investment Partners | Di(2-ethylhexyl) phthalate | 0.00 |
| VIBRAM CORP | VIBRAM USA | Diisocyanates | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Phthalic anhydride | 0.00 |
| ROHM & HAAS ELECTRONIC MATERIALS LLC | DuPont de Nemours | Formaldehyde | 0.00 |
| HART & COOLEY LLC | Egeria Investments | Nickel | 0.00 |
| BETE FOG NOZZLE INC. | BETE FOG NOZZLE INC. | Copper | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Styrene | 0.00 |
| INTERNATIONAL RECTIFIER HIREL PRODUCTS INC. | Infineon Technologies | Lead | 0.00 |
| PANDOLF PERKINS CO | EH PERKINS CONSTRUCTION INC | Polycyclic aromatic compounds | 0.00 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Lead compounds | 0.00 |
| DUXBURY COMPOSITE PRODUCTS DBA PLP COMPOSITES | DUXBURY COMPOSITE PRODUCTS DBA PLP COMPOSITES | Styrene | 0.00 |
| DAV-TECH PLATING INC. | DAV-TECH PLATING INC. | Nitric acid | 0.00 |
| VERANOVA L.P. | Altaris Capital Partners | Methyl tert-butyl ether | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | 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) | 0.00 |
| SEAMAN PAPER CO. OF MASSACHUSETTS INC. | SEAMAN PAPER CO. OF MASSACHUSETTS INC. | Benzo[g,h,i]perylene | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Phenol | 0.00 |
| NEWARK AMERICA | Greif Inc. | Lead | 0.00 |
| TEKNOR APEX ELASTOMERS INC. | TEKNOR APEX | Zinc compounds | 0.00 |
| HOLLINGSWORTH & VOSE CO WEST GROTON | HOLLINGSWORTH & VOSE CO | 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) | 0.00 |
| BIOSYNTH INTERNATIONAL INC. | KKR & Co. | Acetonitrile | 0.00 |
| HOLDEN TRAP ROCK | MA BROKEN STONE CO | Polycyclic aromatic compounds | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Acrylic acid | 0.00 |
| SAEILO ENTERPRISES | SAEILO ENTERPRISES INC | Lead | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Ethyl acrylate | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Methyl methacrylate | 0.00 |
| AMERICAN SUPERCONDUCTOR | American Superconductor Corp. | Lead compounds | 0.00 |
| INNER-TITE CORP. | INNER-TITE CORP. | Lead | 0.00 |
| MARMON UTILITY LLC | Berkshire Hathaway | Copper | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Ethylene glycol | 0.00 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Lead compounds | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Xylene (mixed isomers) | 0.00 |
| HIGHLINE WARREN LLC | Pritzker Group | Methanol | 0.00 |
| SUPERCON INC | SUPERCON INC | Nitric acid | 0.00 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Zinc compounds | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Ethylene glycol | 0.00 |
| JG MACLELLAN CONCRETE CO INC | JG MACLELLAN CONCRETE CO INC | Lead compounds | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Vinyl acetate | 0.00 |
| CIRTRONICS CORP | CIRTRONICS CORP | Lead | 0.00 |
| US PACK INC | US PACK INC | 1,2,4-Trimethylbenzene | 0.00 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Lead | 0.00 |
| INDUSTRIAL POLYMERS & CHEMICAL S INC | INDUSTRIAL POLYMERS & CHEMICAL S INC | Phenol | 0.00 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Zinc compounds | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Toluene | 0.00 |
| BIOSYNTH INTERNATIONAL INC. | KKR & Co. | N,N-Dimethylformamide | 0.00 |
| UNITED COUNTY INDUSTRIES | UNITED COUNTY INDUSTRIES | 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) | 0.00 |
| WHIPPS INC | WHIPPS INC | Manganese | 0.00 |
| CHROMA COLOR CORP | Arsenal Capital Partners | Zinc compounds | 0.00 |
| DAUPHINAIS CONCRETE | DAUPHINAIS CONCRETE INC | Lead | 0.00 |
| US PACK INC | US PACK INC | Ethylene glycol | 0.00 |
| AVIENT COLORANTS USA LLC - HOLDEN FACILITY | Avient Corporation | Zinc compounds | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Methyl methacrylate | 0.00 |
| VERANOVA L.P. | Altaris Capital Partners | Methanol | 0.00 |
| HART & COOLEY LLC | Egeria Investments | Manganese | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | n-Hexane (Hexane) | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Styrene | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Xylene (mixed isomers) | 0.00 |
| LS STARRETT CO | MiddleGround Capital | Methanol | 0.00 |
| HOLDEN TRAP ROCK | MA BROKEN STONE CO | Benzo[g,h,i]perylene | 0.00 |
| MARMON UTILITY LLC | Berkshire Hathaway | Acetophenone | 0.00 |
| NEW METHOD PLATING CO.,INC. | NEW METHOD PLATING CO.,INC. | Cyanide compounds | 0.00 |
| NEW HAMPSHIRE BALL BEARINGS INC | MinebeaMitsumi | Methanol | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Methyl isobutyl ketone | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Toluene | 0.00 |
| DAUPHINAIS CONCRETE | DAUPHINAIS CONCRETE INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| EMD MILLIPORE CORP | Merck KGaA (EMD) | Methanol | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Lithium carbonate | 0.00 |
| ROHM & HAAS ELECTRONIC MATERIALS LLC | DuPont de Nemours | N-Methyl-2-pyrrolidone | 0.00 |
| SARTORIUS STEDIM 450 DLB | SARTORIUS STEDIM BIOTECH | N-Methyl-2-pyrrolidone | 0.00 |
| EMD MILLIPORE CORP | Merck KGaA (EMD) | N-Methyl-2-pyrrolidone | 0.00 |