| ISOMEDIX OPERATIONS INC. | STERIS | Ethylene oxide | 34.17 |
| 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.) | 25.43 |
| INNER-TITE CORP. | INNER-TITE CORP. | Chromium | 14.09 |
| LS STARRETT CO | MiddleGround Capital | Trichloroethylene | 7.09 |
| KOMTEK FORGE LLC | Crawford United | Chromium | 4.34 |
| METSO AUTOMATION USA INC | Valmet Oyj | Chromium | 3.13 |
| 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.) | 2.77 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Maleic anhydride | 2.49 |
| KOMTEK FORGE LLC | Crawford United | Nickel | 2.17 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Dicyclopentadiene | 2.08 |
| MACE ADHESIVES & COATINGS CO I NC | MACE ADHESIVES & COATINGS CO I NC | 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.) | 0.40 |
| WYMAN-GORDON CO | Berkshire Hathaway | Nickel | 0.29 |
| WYMAN-GORDON CO | Berkshire Hathaway | Chromium | 0.22 |
| OMNOVA SOLUTIONS | Synthomer | Acrylonitrile | 0.20 |
| NYACOL NANOTECHNOLOGIES INC | NYACOL NANOTECHNOLOGIES INC | Antimony compounds | 0.18 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Antimony compounds | 0.17 |
| NEWARK AMERICA | Greif Inc. | Peracetic acid | 0.16 |
| WHIPPS INC | WHIPPS INC | Chromium | 0.15 |
| METSO AUTOMATION USA INC | Valmet Oyj | Nickel | 0.12 |
| VIBRAM CORP | VIBRAM USA | Diisocyanates | 0.07 |
| PALMER FOUNDRY INC | PALMER FOUNDRY INC | Diisocyanates | 0.05 |
| WYMAN-GORDON CO | Berkshire Hathaway | Nickel | 0.05 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Antimony compounds | 0.04 |
| PHOTOFABRICATION ENGINEERING I NC | THE PARTNER COS LLC | Hydrogen fluoride (Hydrofluoric acid) | 0.04 |
| EMD MILLIPORE CORP | Merck KGaA (EMD) | Dichloromethane (Methylene chloride) | 0.03 |
| ROGERS CORP - WOODSTOCK | Rogers Corp. | Diisocyanates | 0.03 |
| SEAMAN PAPER CO. OF MASSACHUSETTS INC. | SEAMAN PAPER CO. OF MASSACHUSETTS INC. | Polycyclic aromatic compounds | 0.03 |
| TRELLEBORG COATED SYSTEMS US INC. | Trelleborg | N,N-Dimethylformamide | 0.02 |
| VERANOVA L.P. | Altaris Capital Partners | Dichloromethane (Methylene chloride) | 0.02 |
| OMNOVA SOLUTIONS | Synthomer | Butyl acrylate | 0.02 |
| WHIPPS INC | WHIPPS INC | Nickel | 0.01 |
| PHOTOFABRICATION ENGINEERING I NC | THE PARTNER COS LLC | Nitric acid | 0.01 |
| MACE ADHESIVES & COATINGS CO I NC | MACE ADHESIVES & COATINGS CO I NC | Diisocyanates | 0.01 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Lead compounds | 0.01 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Phthalic anhydride | 0.01 |
| NITTO DENKO AVECIA INC. | Nitto Denko | Acetonitrile | 0.01 |
| OCEAN STATE POWER | LS Power | 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 |
| HOLDEN TRAP ROCK | MA BROKEN STONE CO | Polycyclic aromatic compounds | 0.01 |
| ROHM & HAAS ELECTRONIC MATERIALS LLC | DuPont de Nemours | Formaldehyde | 0.01 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Phenol | 0.01 |
| 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) | 0.01 |
| NITTO DENKO AVECIA INC. | Nitto Denko | Pyridine | 0.00 |
| PANDOLF PERKINS CO | EH PERKINS CONSTRUCTION INC | Polycyclic aromatic compounds | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Styrene | 0.00 |
| INNER-TITE CORP. | INNER-TITE CORP. | Lead | 0.00 |
| RATHBONE PRECISION METALS INC | Calvi Holding | Nitric acid | 0.00 |
| INTERNATIONAL RECTIFIER HIREL PRODUCTS INC. | Infineon Technologies | Lead | 0.00 |
| LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | Formaldehyde | 0.00 |
| DAV-TECH PLATING INC. | DAV-TECH PLATING INC. | Nitric acid | 0.00 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) | 0.00 |
| PEXCO LLC | Odyssey Investment Partners | Di(2-ethylhexyl) phthalate | 0.00 |
| VERANOVA L.P. | Altaris Capital Partners | Methyl tert-butyl ether | 0.00 |
| SAEILO ENTERPRISES | SAEILO ENTERPRISES INC | Lead | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Xylene (mixed isomers) | 0.00 |
| SAINT-GOBAIN ABRASIVES & SAINT -GOBAIN CERAMICS & PLASTICS | Saint-Gobain | Ethylene glycol | 0.00 |
| TEKNOR APEX ELASTOMERS INC. | TEKNOR APEX | Zinc compounds | 0.00 |
| BIOSYNTH INTERNATIONAL INC. | KKR & Co. | Acetonitrile | 0.00 |
| HAARTZ CORP | HAARTZ CORP | o-Xylene | 0.00 |
| NEWARK AMERICA | Greif Inc. | Lead | 0.00 |
| SUPERCON INC | SUPERCON INC | Nitric acid | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Vinyl acetate | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Acrylic acid | 0.00 |
| NYACOL NANOTECHNOLOGIES INC | NYACOL NANOTECHNOLOGIES INC | Lead compounds | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Methyl methacrylate | 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 |
| BENJAMIN MOORE & CO-MILFORD | Berkshire Hathaway | Zinc compounds | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Ethyl acrylate | 0.00 |
| AMERICAN SUPERCONDUCTOR | American Superconductor Corp. | Lead compounds | 0.00 |
| INDUSTRIAL POLYMERS & CHEMICAL S INC | INDUSTRIAL POLYMERS & CHEMICAL S INC | Phenol | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | Toluene | 0.00 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Lead compounds | 0.00 |
| DUXBURY COMPOSITE PRODUCTS DBA PLP COMPOSITES | DUXBURY COMPOSITE PRODUCTS DBA PLP COMPOSITES | Styrene | 0.00 |
| HIGHLINE WARREN LLC | Pritzker Group | Methanol | 0.00 |
| MEXICHEM SPECIALTY COMPOUNDS | Orbia Advance Corporation | Zinc compounds | 0.00 |
| ADVANCE COATINGS CO | ADVANCE COATINGS CO | Ethylene glycol | 0.00 |
| NYACOL NANOTECHNOLOGIES INC | NYACOL NANOTECHNOLOGIES INC | Nitric acid | 0.00 |
| SHIELD PACKAGING CO INC | Shield Packaging Co. | Certain glycol ethers | 0.00 |
| DAUPHINAIS CONCRETE INC. | DAUPHINAIS CONCRETE INC | Lead | 0.00 |
| JG MACLELLAN CONCRETE CO INC | JG MACLELLAN CONCRETE CO INC | Lead compounds | 0.00 |
| AVIENT COLORANTS USA LLC - HOLDEN FACILITY | Avient Corporation | Zinc compounds | 0.00 |
| US PACK INC | US PACK INC | 1,2,4-Trimethylbenzene | 0.00 |
| DAUPHINAIS CONCRETE INC. | DAUPHINAIS CONCRETE INC | Lead | 0.00 |
| MUSTANG MOTORCYCLE PRODUCTS LLC | MAG INC | Styrene | 0.00 |
| SEAMAN PAPER CO. OF MASSACHUSETTS INC. | SEAMAN PAPER CO. OF MASSACHUSETTS INC. | Benzo[g,h,i]perylene | 0.00 |
| TRELLEBORG COATED SYSTEMS US INC. | Trelleborg | Toluene | 0.00 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Lead | 0.00 |
| BENJAMIN MOORE & CO-MILFORD | Berkshire Hathaway | Xylene (mixed isomers) | 0.00 |
| RIVERDALE MILLS CORP | RIVERDALE MILLS CORP | Zinc compounds | 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 |
| S&E SPECIALTY POLYMERS LLC | Nautic Partners | Zinc compounds | 0.00 |
| LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | Phenol | 0.00 |
| DAUPHINAIS CONCRETE | DAUPHINAIS CONCRETE INC | Lead | 0.00 |
| BIOSYNTH INTERNATIONAL INC. | KKR & Co. | N,N-Dimethylformamide | 0.00 |
| CHROMA COLOR CORP | Arsenal Capital Partners | Zinc compounds | 0.00 |
| FLEXCON CO INC. | FLEXCON HOLDINGS TRUST | n-Hexane (Hexane) | 0.00 |
| SHIELD PACKAGING CO INC | Shield Packaging Co. | Xylene (mixed isomers) | 0.00 |
| HOLDEN TRAP ROCK | MA BROKEN STONE CO | Benzo[g,h,i]perylene | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Xylene (mixed isomers) | 0.00 |
| CS-MA LLC DBA CONSTRUCTION SERVICE | CS-MA LLC | Lead | 0.00 |
| US PACK INC | US PACK INC | Ethylene glycol | 0.00 |
| NITTO DENKO AVECIA INC. | Nitto Denko | Toluene | 0.00 |
| WHIPPS INC | WHIPPS INC | Manganese | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Methyl methacrylate | 0.00 |
| VERANOVA L.P. | Altaris Capital Partners | Methanol | 0.00 |
| CLEANPART EAST | Mitsubishi Chemical | Nitric acid | 0.00 |
| LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | Methanol | 0.00 |
| LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | LEWCOTT CORP D/B/A BARRDAY COMPOSITE SOLUTIONS | Toluene | 0.00 |
| GVS N.A. | GVS Group | Formic acid | 0.00 |
| BENJAMIN MOORE & CO-MILFORD | Berkshire Hathaway | Vinyl acetate | 0.00 |
| OMNOVA SOLUTIONS | Synthomer | Styrene | 0.00 |
| E. PARRELLA CO. INC. | E. PARRELLA CO. INC. | Styrene | 0.00 |
| NYACOL NANOTECHNOLOGIES INC | NYACOL NANOTECHNOLOGIES INC | Ethylene glycol | 0.00 |
| BENJAMIN MOORE & CO-MILFORD | Berkshire Hathaway | 3-Iodo-2-propynyl butylcarbamate | 0.00 |
| LS STARRETT CO | MiddleGround Capital | Methanol | 0.00 |
| GENTEX OPTICS INC | EOA HOLDING CO INC | Methanol | 0.00 |
| SAFETY-KLEEN SYSTEMS MARLBOROUGH (MRB) | Clean Harbors Inc. | Ethylene glycol | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Methyl isobutyl ketone | 0.00 |
| NEW METHOD PLATING CO.,INC. | NEW METHOD PLATING CO.,INC. | Cyanide compounds | 0.00 |
| DAUPHINAIS CONCRETE INC. | DAUPHINAIS CONCRETE INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| SAINT GOBAIN PERFORMANCE PLASTICS | Saint-Gobain | Toluene | 0.00 |
| OLDCASTLE APG NEW ENGLAND | CRH PLC | Lead compounds | 0.00 |
| DAUPHINAIS CONCRETE INC. | DAUPHINAIS CONCRETE INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| DAUPHINAIS CONCRETE | DAUPHINAIS CONCRETE INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| CS-MA LLC DBA CONSTRUCTION SERVICE | CS-MA LLC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| EMD MILLIPORE CORP | Merck KGaA (EMD) | Methanol | 0.00 |
| SHIELD PACKAGING CO INC | Shield Packaging Co. | MIXTURE | 0.00 |
| GVS N.A. | GVS Group | N-Methyl-2-pyrrolidone | 0.00 |
| CYTIVA | Danaher | N-Methyl-2-pyrrolidone | 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 |
| ROGERS CORP - WOODSTOCK | Rogers Corp. | N-Methyl-2-pyrrolidone | 0.00 |