| JCJefferson County Landfill | Pine Bluff | — | ◐ LIKELY ACTIVE |
| RORoyal Oak Charcoal - Snow Division | Yellville | — | ◐ LIKELY ACTIVE |
| SCSwift Chemical CO | Rogers | — | ◐ LIKELY ACTIVE |
| SPSyrgis Performance Initiators | West Helena | — | ◐ LIKELY ACTIVE |
| ALAir Liquide | Armorel | — | ◇ UNVERIFIED |
| ARAlrez Resins, INC | Crossett | — | ◇ UNVERIFIED |
| ADArk. Dept. of Health | Little Rock | — | ◇ UNVERIFIED |
| BFBaltz Feed CO. INC. | Pocahontas | — | ◇ UNVERIFIED |
| BCBasf Corporation | West Memphis | — | ◇ UNVERIFIED |
| BTBasin Transportation LLC | Benton | — | ◇ UNVERIFIED |
| BOBruce Oakley, INC | North Little Rock | — | ◇ UNVERIFIED |
| CCCedar Chemical | Helena | — | ◇ UNVERIFIED |
| COCedar Oil Works | Hot Springs | — | ◇ UNVERIFIED |
| CCCypress Chemical | Helena | — | ◇ UNVERIFIED |
| DCDelta Co-op INC | Marmaduke | — | ◇ UNVERIFIED |
| DIDetco Industries INC | Conway | — | ◇ UNVERIFIED |
| DRDiaz Refinery - Prp Committee Site Trust | Diaz | — | ◇ UNVERIFIED |
| EEEcotech Enterprises, INC | Scott | — | ◇ UNVERIFIED |
| EDEl Dorado Compost Facility | El Dorado | — | ◇ UNVERIFIED |
| EPElectrical Power Generator - Osceola | Osceola | — | ◇ UNVERIFIED |
| ETEnviro Tech Chemical Service, INC. Plant 6 | Helena-west Helena | — | ◇ UNVERIFIED |
| FCFayetteville, City of | Fayetteville | — | ◇ UNVERIFIED |
| GDGeneral Dynamics - Ots INC. (camden Op.) | Hampton | — | ◇ UNVERIFIED |
| GSGeo Specialty Chemicals | Little Rock | — | ◇ UNVERIFIED |
| GEGood Earth Horticulture | Menifee | — | ◇ UNVERIFIED |
| GLGreat Lakes Chemical - Newell Plant | El Dorado | — | ◇ UNVERIFIED |
| GAGtl Americas | Redfield | — | ◇ UNVERIFIED |
| HEHalliburton Energy/magnet Cove | Magnet Cove | — | ◇ UNVERIFIED |
| HEHalliburton Energy Services, INC. - Magnet Cove | Malvern | — | ◇ UNVERIFIED |
| HMHalliburton Magnet Cove Grinding Plant | Malvern | — | ◇ UNVERIFIED |
| HFHelm Fertilizer Terminal, INC. | Helena | — | ◇ UNVERIFIED |
| HFHelm Fertilizer Terminal, INC. | Helena | — | ◇ UNVERIFIED |
| HCHempstead County Farmer Assoc. | Hope | — | ◇ UNVERIFIED |
| HIHexion INC. - Batesville | Batesville | — | ◇ UNVERIFIED |
| JRJacksonville Recycling Center | Jacksonville | — | ◇ UNVERIFIED |
| LILilly Industries INC | Little Rock | — | ◇ UNVERIFIED |
| MTMatheson Tri-gas, INC. | Mulberry | — | ◇ UNVERIFIED |
| MIMesa Industries | Fort Smith | — | ◇ UNVERIFIED |
| MLMesser LLC | Lewisville | — | ◇ UNVERIFIED |
| NINitron Industries, LLC | Fayetteville | — | ◇ UNVERIFIED |
| NWNu Way Products CO. | West Memphis | — | ◇ UNVERIFIED |
| OPOmni Preventive Care 3m Espe | Bentonville | — | ◇ UNVERIFIED |
| OBOmnium Blytheville Formulation | Blytheville | — | ◇ UNVERIFIED |
| OCOzark Charcoal (formerly Royal Oak) | Ozark | — | ◇ UNVERIFIED |
| PSParker Solvents Company, INC. | Little Rock | — | ◇ UNVERIFIED |
| PCPolyone CORP. | Wynne | — | ◇ UNVERIFIED |
| QPQuapaw Products | Helena | — | ◇ UNVERIFIED |
| RCRiverside/terra CORP | Pine Bluff | — | ◇ UNVERIFIED |
| RORoyal Oak Enterprises | Omaha | — | ◇ UNVERIFIED |
| RORoyal Oak Enterprises - Huntsville | Huntsville | — | ◇ UNVERIFIED |
