| Ineos Nitriles Usa Llc | Lima | 486.7k |
| Pcs Nitrogen Ohio L.p. | Lima | 341.1k |
| Pixelle Specialty Solutions Llc | Chillicothe | 310.0k |
| Equistar Chemicals Lp | Fairport Harbor | 38.4k |
| Vickery Environmental Inc. | Vickery | 20.1k |
| Cargill Inc | Dayton | 8.8k |
| Alpont Llc | Oregon | 8.8k |
| Kenworth Truck Co | Chillicothe | 7.1k |
| Anatrace | Maumee | 6.8k |
| Emery Oleochemicals Llc Cincinnati Plant | Cincinnati | 5.9k |
| Ppg Industries Inc Barberton | Barberton | 5.8k |
| Kraton Corp | Belpre | 5.8k |
| Basf Corp | Cincinnati | 4.9k |
| Arclin Usa Llc | Toledo | 4.6k |
| Univar Solutions Usa Inc | Evendale | 4.0k |
| Isp Chemicals Llc | Columbus | 3.8k |
| Ohio Refining Co | Oregon | 3.3k |
| Honda Development & Manufacturing Of America Llc | East Liberty | 3.3k |
| Wiley Cos | Coshocton | 3.1k |
| Poet Biorefining-Marion Llc | Marion | 3.1k |
| Durez Corp | Kenton | 2.9k |
| Solvay Specialty Polymers Usa Llc | Marietta | 2.7k |
| Novacel (Troy Laminating & Coating, Inc) | Troy | 2.7k |
| Isp Lima Llc | Lima | 2.4k |
| Valero Renewable Fuels Co Llc | Bloomingburg | 2.3k |
| Ask Chemicals Llc | Cleveland | 2.3k |
| Research Organics Llc | Cleveland | 1.9k |
| Ford Motor Co - Ohio Assembly Plant | Avon Lake | 1.9k |
| Guardian Lima Llc | Lima | 1.8k |
| Winston Heat Treating Inc | Dayton | 1.7k |
| Norman Noble Inc Medtech 1 | Highland Heights | 1.6k |
| Lubrizol Corp Painesvil Le Plant | Painesville | 1.6k |
| Mcgean-Rohco Inc | Cleveland | 1.6k |
| Capital Resin Corp | Columbus | 1.5k |
| The Andersons Marathon Holdings Llc - Greenville Facility | Greenville | 1.5k |
| Federal Mogul Corp | Van Wert | 1.5k |
| Von Roll Usa Inc | Cleveland | 1.3k |
| Dupont Electronic Polymers | Dayton | 1.2k |
| Akron Paint & Varnish Inc. | Akron | 1.1k |
| Resco Products Inc. East Canton Operations | East Canton | 1.1k |
| Superior Industrial Solutions Inc | Fairfield | 1.1k |
| Tedia Co Llc | Fairfield | 1.1k |
| Brenntag Great Lakes Llc | Toledo | 1.0k |
| Bakelite Chemicals Llc | Columbus | 872 |
| Pharmacia Hepar Llc | Franklin | 732 |
| Environmental Specialists Inc. | Youngstown | 727 |
| Perstorp Polyols Inc | Toledo | 726 |
| Emd Millipore Corp | Cincinnati | 725 |
| Ha International Llc | Toledo | 724 |
| Univar Solutions Usa | Twinsburg | 691 |
| Safety-Kleen Systems Brunswick (Bru) | Brunswick | 682 |
| Refcotec Inc. | Orrville | 584 |
| Gfs Chemicals Inc - Kaderly | Columbus | 536 |
| Basf Corp | Greenville | 500 |
| Iten Industries Inc. Plant 1 | Ashtabula | 500 |
| Toledo Refining Co Llc | Oregon | 500 |
| Lima Refining Co | Lima | 478 |
| Weidmann Electrical Technology Inc (0511005006) | Urbana | 389 |
| Avery Dennison Building 7 | Painesville | 379 |
| Chemical Solvents Jennings Road Facility | Cleveland | 280 |
| Ppg Industries Ohio Inc - Delaware | Delaware | 278 |
| Valicor Environmental Services Llc | Dayton | 255 |
| Veolia N.a. Inc. | West Carrollton | 255 |
| Holcim (Us) (Including Systech Env. Corp.) | Paulding | 212 |
| Sika Corp-Marion Operations | Marion | 207 |
| Heraeus Epurio Llc | Vandalia | 197 |
| Vwr Chemicals Llc | Aurora | 175 |
| Aexcel Corp | Mentor | 170 |
| Univar Solutions Usa Inc. - Hamilton | Hamilton | 121 |
| Ppg Industries Ohio Inc (Cl) | Cleveland | 107 |
| The Champion Co | Springfield | 89 |
| Avery Dennison Fasson Roll Na | Painesville | 85 |
| Ppg Industries Ohio Inc Circleville Oh | Circleville | 85 |
| Cabinetworks Group Middlefield Plant 3 | Orwell | 78 |
| Avery Dennison - Building 11 | Painesville | 76 |
| Ineos Usa Llc | Addyston | 70 |
| Bostik Inc. | Ashland | 45 |
| Norplas Industries Inc | Northwood | 40 |
| Chemical Solvents Inc--Denison Facility | Cleveland | 10 |
| Chemtrade Refinery Solutions Lp | Oregon | 10 |
| Yanfeng Us Automotive Interiors Systems Ii Llc | Bryan | 9 |
| Reworld Tron Corp | Avon | 7 |
| Avery Dennison Corp Specialty Tape Div | Painesville | 3 |
| Heritage Thermal Services | East Liverpool | 2 |
| Ross Incineration Services Inc | Grafton | 0 |
| Fbc Chemical Medina | Medina | 0 |
| Colfor Manufacturing Inc - Minerva | Minerva | 0 |
| Timken-World Headquarters Facility | North Canton | 0 |
| Shepherd Chemical Co | Cincinnati | 0 |
| Evans Adhesive Corp | Columbus | 0 |
| International Motors Llc. | Springfield | 0 |
| Thorworks Industries Inc | Sandusky | 0 |
| Dubois Chemicals Inc. - Hamilton Oh (Eagle) | Hamilton | 0 |
| Dubois Chemicals Inc. - Sharonville Oh (50) | Cincinnati | 0 |
| Magnum Products | Columbus | 0 |
| Three Rivers Energy Llc | Coshocton | 0 |
| Technical Products Inc. | Cleveland | 0 |
| Malco Products Inc | Barberton | 0 |
| Nippon Paint Automotive Americas, Inc | Cleveland | 0 |