| DEPUY SYNTHES A JOHNSON & JOHNSON CO | Johnson & Johnson | Cobalt | 131.37 |
| CERTAINTEED LLC | Saint-Gobain | 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.) | 40.20 |
| GE AVIATION | General Electric | Chromium | 28.66 |
| BOYD CORP INC. | Goldman Sachs | Trichloroethylene | 21.54 |
| DEPUY SYNTHES A JOHNSON & JOHNSON CO | Johnson & Johnson | Chromium | 16.40 |
| PARKER HANNIFIN CORP CHOMERICS DIV | Parker-Hannifin | Nickel compounds | 10.07 |
| TECHNICAL MANUFACTURING CORP | Ametek | Chromium | 8.99 |
| PALMER MANUFACTURING CO LLC | Pursuit Aerospace | Cobalt | 8.76 |
| PALMER MANUFACTURING CO LLC | Pursuit Aerospace | Chromium | 4.58 |
| PARADIGM PRECISION HOLDINGS LLC | Pursuit Aerospace | Cobalt | 3.49 |
| GE AVIATION | General Electric | Cobalt | 3.40 |
| GE AVIATION | General Electric | Nickel | 2.95 |
| PARADIGM PRECISION HOLDINGS LLC | Pursuit Aerospace | Chromium | 1.82 |
| NATIONAL COATING CORP | Carlisle | Formaldehyde | 1.56 |
| TEI BIOSCIENCES | Integra LifeSciences | Chloroform | 1.51 |
| WOLLASTON ALLOYS | Consolidated Precision Products | Nickel | 1.23 |
| WOLLASTON ALLOYS | Consolidated Precision Products | Chromium | 0.96 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Benzene | 0.91 |
| SMITH & NEPHEW | Smith & Nephew | Chromium | 0.62 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | Benzene | 0.40 |
| GLOBAL COMPANIES LLC | Global Partners LP | Benzene | 0.38 |
| FUTURE FOAM INC | FUTURE FOAM INC | Toluene diisocyanate (mixed isomers) | 0.37 |
| IRVING OIL TERMINALS INC. | Irving Oil | Benzene | 0.31 |
| PALMER MANUFACTURING CO LLC | Pursuit Aerospace | Nickel | 0.29 |
| KENDALL GREEN ENERGY LLC | Antin Infrastructure Partners | Polycyclic aromatic compounds | 0.21 |
| PARADIGM PRECISION HOLDINGS LLC | Pursuit Aerospace | Nickel | 0.12 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | Benzene | 0.11 |
| TECH-ETCH INC | TECH ETCH INC | Chlorine | 0.09 |
| SCITUATE CONCRETE PIPE | SCITUATE CONCRETE PIPE | Lead | 0.09 |
| HOLCIM SOLUTIONS & PRODUCTS US LLC | Holcim Group | Dichloromethane (Methylene chloride) | 0.05 |
| IRVING OIL TERMINALS INC. | Irving Oil | Naphthalene | 0.04 |
| ELECTRO FIBER TECHNOLOGIES | James Cropper | Formaldehyde | 0.04 |
| FLEXCON INDUSTRIES | Swan Group | Xylene (mixed isomers) | 0.04 |
| CYN OIL | Clean Harbors Inc. | Polycyclic aromatic compounds | 0.03 |
| PARKER HANNIFIN CORP CHOMERICS DIV | Parker-Hannifin | Copper | 0.03 |
| DAMPNEY CO INC | DAMPNEY CO INC | Ethylbenzene | 0.03 |
| BABS FOUNDRY | BABS FOUNDRY | Copper | 0.02 |
| CHELSEA SANDWICH LLC | Global Partners LP | Naphthalene | 0.02 |
| CALPINE FORE RIVER ENERGY CENTER LLC | Energy Capital Partners | Polycyclic aromatic compounds | 0.02 |
| HOLCIM - NER INC. | Holcim Group | Polycyclic aromatic compounds | 0.02 |
| GLOBE COMPOSITE SOLUTIONS LLC | ESCO Technologies | Diisocyanates | 0.02 |
| SIKA CORP SIKA SARNAFIL DIV | Sika AG | Certain glycol ethers | 0.02 |
| HOLCIM - NER INC. | Holcim Group | Polycyclic aromatic compounds | 0.01 |
| HOLCIM - NER INC. | Holcim Group | Polycyclic aromatic compounds | 0.01 |
| AVEDIS ZILDJIAN CO. | AVEDIS ZILDJIAN CO | Copper | 0.01 |
| DUNCAN GALVANIZING CORP. | DUNCAN GALVANIZING CORP. | Lead compounds | 0.01 |
| SIKA CORP SIKA SARNAFIL DIV | Sika AG | Antimony compounds | 0.01 |
| TECH-ETCH INC | TECH ETCH INC | Nitric acid | 0.01 |
| DUNCAN GALVANIZING CORP. | DUNCAN GALVANIZING CORP. | Zinc compounds | 0.01 |
| GLOBAL COMPANIES LLC | Global Partners LP | Naphthalene | 0.01 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Ethylbenzene | 0.01 |
| CERTAINTEED LLC | Saint-Gobain | Polycyclic aromatic compounds | 0.01 |
| ROUSSELOT PEABODY INC. | Darling Ingredients | 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 |
| TECH-ETCH INC | TECH ETCH INC | Copper | 0.01 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | Naphthalene | 0.01 |
| V&S TAUNTON GALVANIZING LLC | Hill & Smith Holdings PLC | Lead | 0.00 |
| ALNYLAM PHARMACEUTICALS | Alnylam Pharmaceuticals | Acetonitrile | 0.00 |
| DAMPNEY CO INC | DAMPNEY CO INC | Xylene (mixed isomers) | 0.00 |
| THE DOW CHEMICAL CO | Dow Inc. | Ethylbenzene | 0.00 |
| BOSTIK MANUFACTURING PLANT | Arkema | Antimony compounds | 0.00 |
| PARKER HANNIFIN CORP CHOMERICS DIV | Parker-Hannifin | Silver compounds | 0.00 |
| LAMB & RITCHIE | LAMB & RITCHIE | Lead | 0.00 |
| HOLCIM SOLUTIONS & PRODUCTS US LLC | Holcim Group | n-Hexane (Hexane) | 0.00 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | Ethylbenzene | 0.00 |
| TECH-ETCH INC | TECH ETCH INC | Lead compounds | 0.00 |
| NATIONAL COATING CORP | Carlisle | Phenol | 0.00 |
| CLEAN HARBORS OF BRAINTREE INC. | Clean Harbors Inc. | Lead | 0.00 |
| V&S TAUNTON GALVANIZING LLC | Hill & Smith Holdings PLC | Zinc compounds | 0.00 |
| CALPINE FORE RIVER ENERGY CENTER LLC | Energy Capital Partners | 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 |
| GLOBAL COMPANIES LLC | Global Partners LP | Ethylbenzene | 0.00 |
| MEDTRONIC INC | Medtronic | n-Hexane (Hexane) | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Ethylbenzene | 0.00 |
| FM CALLAHAN & SON INC | FM CALLAHAN & SON INC | Nitric acid | 0.00 |
| CHEMGENES CORP | CHEMGENES CORP | Chloroform | 0.00 |
| WINCHESTER INTERCONNECT RF CORP | Aptiv PLC | Copper | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | 1,2,4-Trimethylbenzene | 0.00 |
| TECH-ETCH INC | TECH ETCH INC | Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | Ethylbenzene | 0.00 |
| CHELSEA SANDWICH LLC | Global Partners LP | 1,2,4-Trimethylbenzene | 0.00 |
| CERTAINTEED LLC | Saint-Gobain | Lead | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | Naphthalene | 0.00 |
| AIRBORN ELECTRONICS INC | AIRBORN INC | Lead | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Xylene (mixed isomers) | 0.00 |
| CERTAINTEED LLC | Saint-Gobain | Copper compounds (this category does not include copper phthalocyanine compounds that are substituted with only hydrogen, and/or chlorine, and/or bromine.) | 0.00 |
| MATEP LLC | Longwood Energy Partners | 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 |
| HOLCIM - NER INC. | Holcim Group | Lead compounds | 0.00 |
| TL EDWARDS INC. | TL EDWARDS INC. | Polycyclic aromatic compounds | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | Xylene (mixed isomers) | 0.00 |
| KENDALL GREEN ENERGY LLC | Antin Infrastructure Partners | 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 |
| ANALOGIC CORP | Altaris Capital Partners | Lead | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | n-Hexane (Hexane) | 0.00 |
| JG MACLELLAN CONCRETE CO INC | JG MACLELLAN CONCRETE CO INC | Lead compounds | 0.00 |
| CERTAINTEED LLC | Saint-Gobain | Zinc compounds | 0.00 |
| ITW PERFORMANCE POLYMERS | Illinois Tool Works | Methyl methacrylate | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | 1,2,4-Trimethylbenzene | 0.00 |
| HOLCIM SOLUTIONS & PRODUCTS US LLC | Holcim Group | Toluene | 0.00 |
| THE DOW CHEMICAL CO | Dow Inc. | Xylene (mixed isomers) | 0.00 |
| WOLLASTON ALLOYS | Consolidated Precision Products | Copper | 0.00 |
| PLATING FOR ELECTRONICS INC. | PLATING FOR ELECTRONICS INC. | Nitric acid | 0.00 |
| TRESCA BROTHERS SAND & GRAVEL | TRESCA BROTHERS SAND & GRAVEL | Lead | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Lead | 0.00 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | Xylene (mixed isomers) | 0.00 |
| TRANSENE CO INC. | TRANSENE CO INC | Nitric acid | 0.00 |
| TRANSENE CO INC. | TRANSENE CO INC | Hydrogen fluoride (Hydrofluoric acid) | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | 1,2,4-Trimethylbenzene | 0.00 |
| BOSTIK MANUFACTURING PLANT | Arkema | Toluene | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | Polycyclic aromatic compounds | 0.00 |
| ULTRA | Advent International | Lead compounds | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | Xylene (mixed isomers) | 0.00 |
| 3M CO | 3M Company | Toluene | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Xylene (mixed isomers) | 0.00 |
| BOSTIK MANUFACTURING PLANT | Arkema | Ethylene glycol | 0.00 |
| HOLCIM - NER INC. | Holcim Group | Lead compounds | 0.00 |
| NEWINGTON STATION | Atlas Holdings | Polycyclic aromatic compounds | 0.00 |
| THE DOW CHEMICAL CO | Dow Inc. | Propylene oxide | 0.00 |
| 3M CO | 3M Company | Methanol | 0.00 |
| ROLLS-ROYCE N.A. INC. | Rolls-Royce | Lead | 0.00 |
| DAMPNEY CO INC | DAMPNEY CO INC | Toluene | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Polycyclic aromatic compounds | 0.00 |
| CERTAINTEED LLC | Saint-Gobain | Mercury | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | n-Hexane (Hexane) | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | n-Hexane (Hexane) | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Toluene | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | 1,2,4-Trimethylbenzene | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | n-Hexane (Hexane) | 0.00 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | 1,2,4-Trimethylbenzene | 0.00 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | n-Hexane (Hexane) | 0.00 |
| BOSTIK MANUFACTURING PLANT | Arkema | Cyclohexane | 0.00 |
| NATIONAL COATING CORP | Carlisle | Methanol | 0.00 |
| VEOLIA ES TECHNICAL SOLUTIONS | Veolia Group | Mercury | 0.00 |
| TOPCOAT | Standard Industries Inc. | Toluene | 0.00 |
| HOUGHTON CHEMICAL CORP | HOUGHTON CHEMICAL CORP | Certain glycol ethers | 0.00 |
| DYNASOL INC | DYNASOL INC | Certain glycol ethers | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Certain glycol ethers | 0.00 |
| HOUGHTON CHEMICAL CORP | HOUGHTON CHEMICAL CORP | Ethylene glycol | 0.00 |
| INEOS STYROLUTION AMERICA LLC | Ineos | Styrene | 0.00 |
| CHELSEA SANDWICH LLC | Global Partners LP | Polycyclic aromatic compounds | 0.00 |
| CB FISK INC | CB FISK INC | Lead | 0.00 |
| SIEMENS HEALTHCARE DIAGNOSTICS | Siemens | Methanol | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | Toluene | 0.00 |
| GLOBAL COMPANIES LLC | Global Partners LP | Benzo[g,h,i]perylene | 0.00 |
| GULF OIL LP CHELSEA TERMINAL | RaceTrac Petroleum | Toluene | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Xylene (mixed isomers) | 0.00 |
| OLYMPIC ADHESIVES INC | OLYMPIC ADHESIVES INC | Phenol | 0.00 |
| EXXON MOBIL CORP EVERETT TERMINAL | Exxon Mobil | Toluene | 0.00 |
| MURPHYS WASTE OIL SERVICES INC | Clean Harbors Inc. | Polycyclic aromatic compounds | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Toluene | 0.00 |
| THE GILLETTE CO LLC | Procter & Gamble | 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 |
| CL HAUTHAWAY & SONS CORP | CL HAUTHAWAY & SONS CORP | n-Hexane (Hexane) | 0.00 |
| TL EDWARDS INC. | TL EDWARDS INC. | Benzo[g,h,i]perylene | 0.00 |
| BOSTIK MANUFACTURING PLANT | Arkema | Methanol | 0.00 |
| OCEAN SPRAY CRANBERRIES INC | OCEAN SPRAY CRANBERRIES INC | Polycyclic aromatic compounds | 0.00 |
| ALNYLAM PHARMACEUTICALS | Alnylam Pharmaceuticals | Toluene | 0.00 |
| GEM GRAVURE CO INC. | GEM GRAVURE CO INC | Toluene | 0.00 |
| CYN OIL | Clean Harbors Inc. | Lead compounds | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Cyclohexane | 0.00 |
| CL HAUTHAWAY & SONS CORP | CL HAUTHAWAY & SONS CORP | Cyclohexane | 0.00 |
| MURPHYS WASTE OIL SERVICES INC | Clean Harbors Inc. | Ethylene glycol | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Toluene | 0.00 |
| CITGO PETROLEUM CORP | PDVSA (Petroleos de Venezuela S.A.) | Cumene | 0.00 |
| HOUGHTON CHEMICAL CORP | HOUGHTON CHEMICAL CORP | Methanol | 0.00 |
| CYN OIL | Clean Harbors Inc. | Ethylene glycol | 0.00 |
| CL HAUTHAWAY & SONS CORP | CL HAUTHAWAY & SONS CORP | Toluene | 0.00 |
| HOUGHTON CHEMICAL CORP | HOUGHTON CHEMICAL CORP | Toluene | 0.00 |
| TEI BIOSCIENCES | Integra LifeSciences | Methanol | 0.00 |
| INEOS STYROLUTION AMERICA LLC | Ineos | Methyl methacrylate | 0.00 |
| HOUGHTON CHEMICAL CORP | HOUGHTON CHEMICAL CORP | Xylene (mixed isomers) | 0.00 |
| CERTAINTEED LLC | Saint-Gobain | Benzo[g,h,i]perylene | 0.00 |
| OLDCASTLE - ANCHOR | CRH PLC | Lead compounds | 0.00 |
| RESILIENCE BOSTON INC. | NATIONAL RESILIENCE INC | Ethylene glycol | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Ethylene glycol | 0.00 |
| ECKART AMERICA | Altana | n-Butyl alcohol (1-Butanol) | 0.00 |
| THE DOW CHEMICAL CO | Dow Inc. | Toluene | 0.00 |
| THE DOW CHEMICAL CO | Dow Inc. | Ethylene glycol | 0.00 |
| ZSCHIMMER & SCHWARZ INTERPOLYMER | ZSCHIMMER & SCHWARZ | Methyl methacrylate | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Methanol | 0.00 |
| TECH-ETCH INC | TECH ETCH INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 0.00 |
| CHEMGENES CORP | CHEMGENES CORP | n-Hexane (Hexane) | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Methyl isobutyl ketone | 0.00 |
| ZSCHIMMER & SCHWARZ INTERPOLYMER | ZSCHIMMER & SCHWARZ | Styrene | 0.00 |
| CHELSEA SANDWICH LLC | Global Partners LP | Benzo[g,h,i]perylene | 0.00 |
| OCEAN SPRAY CRANBERRIES INC | OCEAN SPRAY CRANBERRIES INC | Benzo[g,h,i]perylene | 0.00 |
| MURPHYS WASTE OIL SERVICES INC | Clean Harbors Inc. | Benzo[g,h,i]perylene | 0.00 |
| IRVING OIL TERMINALS INC. | Irving Oil | Benzo[g,h,i]perylene | 0.00 |
| CHEMGENES CORP | CHEMGENES CORP | Acetonitrile | 0.00 |
| ECKART AMERICA | Altana | Methyl isobutyl ketone | 0.00 |
| ENTEGRIS INC | Entegris | Di(2-ethylhexyl) phthalate | 0.00 |
| ENTEGRIS INC | Entegris | Methanol | 0.00 |
| ROHM & HAAS ELECTRONIC MATERIALS LLC | DuPont de Nemours | Formaldehyde | 0.00 |
| ROHM & HAAS ELECTRONIC MATERIALS LLC | DuPont de Nemours | N-Methyl-2-pyrrolidone | 0.00 |
| SKYWORKS SOLUTIONS INC | Skyworks Solutions | N-Methyl-2-pyrrolidone | 0.00 |
| CURIA MASSACHUSETTS INC. | Aledade | N-Methyl-2-pyrrolidone | 0.00 |
| IDEAL TAPE CO | American Biltrite | Toluene | 0.00 |
| IDEAL TAPE CO | American Biltrite | n-Hexane (Hexane) | 0.00 |
| CL HAUTHAWAY & SONS CORP | CL HAUTHAWAY & SONS CORP | N-Methyl-2-pyrrolidone | 0.00 |
| ITW PERFORMANCE POLYMERS | Illinois Tool Works | Benzoyl peroxide | 0.00 |
| DYNASOL INC | DYNASOL INC | Nonylphenol Ethoxylates | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | N-Methyl-2-pyrrolidone | 0.00 |
| CALLAHAN CHEMICAL CO LLC | SK Capital Partners | Nonylphenol Ethoxylates | 0.00 |
| ENVIRO WASTE | Clean Harbors Inc. | Polycyclic aromatic compounds | 0.00 |
| ENVIRO WASTE | Clean Harbors Inc. | Benzo[g,h,i]perylene | 0.00 |
| ECKART AMERICA | Altana | N-Methyl-2-pyrrolidone | 0.00 |