Toxic Releases / Isoprene
Isoprene
CAS 78-79-5 · 162,728 lb reported released from 51 facilities (TRI 2024).EPA-listed carcinogen
By State
TX144,585 lb · 25 facilitiesLA11,691 lb · 5 facilitiesOH2,618 lb · 3 facilitiesUT1,042 lb · 1 facilitiesWA908 lb · 1 facilitiesSC861 lb · 1 facilitiesIN510 lb · 1 facilitiesIA125 lb · 1 facilitiesMS120 lb · 1 facilitiesKY114 lb · 2 facilitiesKS98 lb · 1 facilitiesCA41 lb · 5 facilitiesMT10 lb · 1 facilitiesWY2 lb · 1 facilitiesOK1 lb · 1 facilitiesIL1 lb · 1 facilities
Facilities Reporting the Largest Releases
1GOODYEAR TIRE & RUBBER CO · BEAUMONT, TX77,483 lb (2024)2LYONDELL CHEMICAL CO · CHANNELVIEW, TX19,021 lb (2024)3VP RACING FUELS INC. · ELMENDORF, TX13,894 lb (2024)4DIXIE CHEMICAL CO INC · PASADENA, TX10,184 lb (2024)5EXXONMOBIL BATON ROUGE CHEMICAL PLANT (PART) · BATON ROUGE, LA6,200 lb (2024)6EXXONMOBIL BAYTOWN CHEMICAL PLANT (PART) · BAYTOWN, TX4,726 lb (2024)7TSRC SPECIALTY MATERIALS LLC · PLAQUEMINE, LA4,300 lb (2024)8DOW SABINE RIVER OPERATIONS · ORANGE, TX3,005 lb (2024)9KRATON CORP · BELPRE, OH2,610 lb (2024)10SHELL CHEMICAL LP · DEER PARK, TX2,376 lb (2024)11TARGA DOWNSTREAM LLC - GALENA PARK MARINE TERMINAL · GALENA PARK, TX2,371 lb (2024)12KURARAY AMERICA INC SEPTON BU · PASADENA, TX2,125 lb (2024)13DOW CHEMICAL CO FREEPORT FACILITY · FREEPORT, TX1,750 lb (2024)14FORMOSA PLASTICS CORP TEXAS · POINT COMFORT, TX1,538 lb (2024)15CHEVRON PHILLIPS CHEMICAL CO LP · BAYTOWN, TX1,515 lb (2024)16SI GROUP BAYTOWN · BAYTOWN, TX1,197 lb (2024)17PLACID REFINING CO LLC · PORT ALLEN, LA1,098 lb (2024)18CHEVRON PRODUCTS CO - SALT LAKE REFINERY · SALT LAKE CITY, UT1,042 lb (2024)19HF SINCLAIR PUGET SOUND REFINING LLC · ANACORTES, WA908 lb (2024)20LINDAU CHEMICALS INC. · COLUMBIA, SC861 lb (2024)21EXXONMOBIL CHEMICAL CO BAYTOWN OLEFINS PLANT (PART) · BAYTOWN, TX736 lb (2024)22EQUISTAR CHEMICALS LP · LA PORTE, TX578 lb (2024)23BP PRODUCTS NA WHITING BUSINESS UNIT · WHITING, IN510 lb (2024)24MONUMENT CHEMICAL PORT ARTHUR LLC · PORT ARTHUR, TX508 lb (2024)25OCCIDENTAL CHEMICAL CORP · GREGORY, TX504 lb (2024)26EXXONMOBIL REFINING & SUPPLY BAYTOWN REFINERY (PART) · BAYTOWN, TX413 lb (2024)27SYNTHOMER ADHESIVE TEHCNOLOGIES EASTOFLEX & EAST · LONGVIEW, TX362 lb (2024)28EXXONMOBIL OIL BEAUMONT REFINERY (PART) · BEAUMONT, TX191 lb (2024)29EQUISTAR CHEMICALS CLINTON PLANT · CLINTON, IA125 lb (2024)30CHEVRON PRODUCTS CO PASCAGOULA REFINERY · PASCAGOULA, MS120 lb (2024)31WESTLAKE VINYLS INC · CALVERT CITY, KY113 lb (2024)32SYSTECH ENVIRONMENTAL CORP · FREDONIA, KS98 lb (2024)33THE DOW CHEMICAL CO - LOUISIANA OPERATIONS · PLAQUEMINE, LA73 lb (2024)34EXXONMOBIL OIL CORP CHEMICAL PLANT (PART) · BEAUMONT, TX58 lb (2024)35GULF COAST GROWTH VENTURES LLC · GREGORY, TX27 lb (2024)36SHELL NORCO CHEMICAL PLANT · NORCO, LA20 lb (2024)37CHEVRON PRODUCTS CO RICHMOND REFINERY · RICHMOND, CA16 lb (2024)38TORRANCE REFINING CO LLC · TORRANCE, CA13 lb (2024)39PAR MONTANA BILLINGS REFINERY · BILLINGS, MT10 lb (2024)40MOTIVA - PORT ARTHUR CHEMICALS · PORT ARTHUR, TX10 lb (2024)41OHIO REFINING CO · OREGON, OH8 lb (2024)42INVISTA HOUSTON · HOUSTON, TX8 lb (2024)43CHEVRON PRODUCTS CO. DIV OF CHEVRON USA INC. · EL SEGUNDO, CA8 lb (2024)44CLEAN HARBORS DEER PARK LLC · LA PORTE, TX5 lb (2024)45PHILLIPS 66 LOS ANGELES REFINERY WILMINGTON PLANT · WILMINGTON, CA3 lb (2024)46HF SINCLAIR PARCO REFINING LLC · SINCLAIR, WY2 lb (2024)47PHILLIPS 66 CO EAST ST LOUIS TERMINAL · CAHOKIA, IL1 lb (2024)48CENTRAL PLAINS CEMENT CO · TULSA, OK1 lb (2024)49CYMETECH CORP. · CALVERT CITY, KY1 lb (2024)50MARTINEZ REFINING CO LLC · MARTINEZ, CA1 lb (2024)
Source: EPA Toxics Release Inventory (TRI) Basic Data File. Figures are amounts facilities reported releasing to air, water and land — they are not a measure of exposure, concentration or health risk.