Toxic Releases / Hydrogen cyanide
Hydrogen cyanide
CAS 74-90-8 · 7,057,011 lb reported released from 132 facilities (TRI 2024).
By State
TX3,231,370 lb · 31 facilitiesLA1,045,551 lb · 19 facilitiesCA421,855 lb · 10 facilitiesAR346,854 lb · 2 facilitiesUT248,896 lb · 4 facilitiesSC214,610 lb · 5 facilitiesIN210,705 lb · 3 facilitiesTN149,607 lb · 5 facilitiesOK131,922 lb · 3 facilitiesCO126,263 lb · 5 facilitiesDE114,657 lb · 1 facilitiesMS114,000 lb · 1 facilitiesMN106,604 lb · 2 facilitiesKS100,000 lb · 1 facilitiesFL95,610 lb · 2 facilitiesNV91,230 lb · 11 facilitiesMO75,331 lb · 1 facilitiesVA51,792 lb · 1 facilitiesNJ50,100 lb · 1 facilitiesWY39,317 lb · 3 facilitiesOH22,510 lb · 4 facilitiesPA17,734 lb · 2 facilitiesID15,189 lb · 1 facilitiesWA13,131 lb · 3 facilitiesAK7,704 lb · 1 facilitiesNE7,200 lb · 1 facilitiesND4,880 lb · 2 facilitiesAL1,444 lb · 2 facilitiesIL673 lb · 3 facilitiesMT200 lb · 1 facilitiesMA73 lb · 1 facilities
Facilities Reporting the Largest Releases
1CITGO REFINING & CHEMICALS CO LP EAST PLANT · CORPUS CHRISTI, TX493,012 lb (2024)2HOLCIM (US) INC. · MIDLOTHIAN, TX396,698 lb (2024)3VALERO REFINING-TEXAS LP CORPUS CHRISTI WEST PLANT · CORPUS CHRISTI, TX382,162 lb (2024)4TOTALENERGIES PETROCHEMICALS & REFINING USA INC-PORT ARTHUR · PORT ARTHUR, TX381,949 lb (2024)5VALERO REFINING - NEW ORLEANS LLC · NORCO, LA370,639 lb (2024)6ELEMENTAL ENVIRONMENTAL SOLUTIONS LLC · ARKADELPHIA, AR292,296 lb (2024)7MOTIVA-PORT ARTHUR REFINERY · PORT ARTHUR, TX272,611 lb (2024)8PREMCOR REFINING GROUP INC PORT ARTHUR · PORT ARTHUR, TX240,263 lb (2024)9BLANCHARD REFINING CO LLC · TEXAS CITY, TX214,000 lb (2024)10HEXCEL CORP · SALT LAKE CITY, UT176,276 lb (2024)11EXXONMOBIL REFINING & SUPPLY BAYTOWN REFINERY (PART) · BAYTOWN, TX160,915 lb (2024)12MARATHON PETROLEUM CO LP · GARYVILLE, LA159,621 lb (2024)13PHILLIPS 66 LOS ANGELES REFINERY WILMINGTON PLANT · WILMINGTON, CA150,000 lb (2024)14HEIDELBERG MATERIALS US CEMENT LLC · MITCHELL, IN138,772 lb (2024)15HOLCIM (US) INC HOLLY HILL PLANT · HOLLY HILL, SC122,719 lb (2024)16DELAWARE CITY REFINERY · DELAWARE CITY, DE114,657 lb (2024)17CHEVRON PRODUCTS CO PASCAGOULA REFINERY · PASCAGOULA, MS114,000 lb (2024)18VALERO REFINING - TEXAS L.P. HOUSTON REFINERY · HOUSTON, TX103,731 lb (2024)19TORRANCE REFINING CO LLC · TORRANCE, CA102,600 lb (2024)20VALERO REFINING-TEXAS LP · TEXAS CITY, TX100,000 lb (2024)21HF SINCLAIR EL DORADO REFINING LLC · EL DORADO, KS100,000 lb (2024)22PHILLIPS 66 PONCA CITY SITE · PONCA CITY, OK98,892 lb (2024)23CITGO PETROLEUM CORP · SULPHUR, LA88,240 lb (2024)24EXXONMOBIL BATON ROUGE REFINERY (PART) · BATON ROUGE, LA86,000 lb (2024)25CHEVRON PRODUCTS CO RICHMOND REFINERY · RICHMOND, CA83,000 lb (2024)26CHALMETTE REFINING LLC · CHALMETTE, LA82,600 lb (2024)27VALERO REFINING CO - TENNESSEE L.L.C. · MEMPHIS, TN75,839 lb (2024)28HOLCIM (US) INC. - STE. GENEVIEVE PLANT · BLOOMSDALE, MO75,331 lb (2024)29HOUSTON REFINING LP · HOUSTON, TX73,728 lb (2024)30PHILLIPS 66 LAKE CHARLES REFINERY · WESTLAKE, LA73,374 lb (2024)31COUNTRYMARK REFINING & LOGISTICS LLC · MOUNT VERNON, IN71,343 lb (2024)32CYTEC ENGINEERED MATERIALS INC. · ROCK HILL, SC70,492 lb (2024)33COVORO MINING SOLUTIONS LLC · MEMPHIS, TN67,400 lb (2024)34TITAN PENNSUCO COMPLEX · MEDLEY, FL62,670 lb (2024)35ALON REFINING KROTZ SPRINGS INC · KROTZ SPRINGS, LA62,515 lb (2024)36WESTERN EL PASO REFINERY · EL PASO, TX60,618 lb (2024)37DIAMOND SHAMROCK REFINING CO LP · SUNRAY, TX57,000 lb (2024)38FLINT HILLS RESOURCES PINE BEND LLC · ROSEMOUNT, MN54,604 lb (2024)39LION OIL CO · EL DORADO, AR54,558 lb (2024)40LONE STAR INDUSTRIES DBA BUZZI UNICEM USA · MARYNEAL, TX53,736 lb (2024)41ALON USA-BIG SPRING REFINERY · BIG SPRING, TX52,475 lb (2024)42HOLCIM (US) INC PORTLAND PLANT · FLORENCE, CO52,144 lb (2024)43ST PAUL PARK REFINING CO LLC · SAINT PAUL PARK, MN52,000 lb (2024)44ROANOKE CEMENT CO LLC · TROUTVILLE, VA51,792 lb (2024)45PHILLIPS 66 CO-BAYWAY REFINERY · LINDEN, NJ50,100 lb (2024)46ULTRAMAR INC WILMINGTON REFINERY · WILMINGTON, CA48,000 lb (2024)47FLINT HILLS RESOURCES CORPUS CHRISTI LLC - WEST PLANT · CORPUS CHRISTI, TX41,300 lb (2024)48PLACID REFINING CO LLC · PORT ALLEN, LA40,121 lb (2024)49CABOT CORP CANAL PLANT · CENTERVILLE, LA39,416 lb (2024)50MOUNTAIN CEMENT CO · LARAMIE, WY38,000 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.