| AIAdvansix INC | Philadelphia | — | ◐ LIKELY ACTIVE |
| APAir Prods & Chemicals INC - Specialty Gas Div | Tamaqua | — | ◐ LIKELY ACTIVE |
| ANAkzo Nobel Coatings Inc/reading | Reading | — | ◐ LIKELY ACTIVE |
| ACAltasciences Cdmo Philadelphia | Harleysville | — | ◐ LIKELY ACTIVE |
| APAmetek/westchester Plastics Div | Nesquehoning | — | ◐ LIKELY ACTIVE |
| AIArkema INC. | Bristol | — | ◐ LIKELY ACTIVE |
| ALArxada LLC | Williamsport | — | ◐ LIKELY ACTIVE |
| ASAshland Specialty Chemical Co.- Neville Island, Pa | Pittsburgh | — | ◐ LIKELY ACTIVE |
| ADAvery Dennison Performance Polymers | Mill Hall | — | ◐ LIKELY ACTIVE |
| ARAvid Radiopharmaceuticals | Philadelphia | 20–99 | ◐ LIKELY ACTIVE |
| BCBasf CORP | Monaca | — | ◐ LIKELY ACTIVE |
| BEBasf Evans City Ops | Evans City | — | ◐ LIKELY ACTIVE |
| BZBefesa Zinc US INC | Palmerton | — | ◐ LIKELY ACTIVE |
| BPBehr Proc Corp/allentown | Allentown | — | ◐ LIKELY ACTIVE |
| BABethlehem Apparatus CO INC | Hellertown | — | ◐ LIKELY ACTIVE |
| BABraskem Amer Inc/marcus Hook | Marcus Hook | — | ◐ LIKELY ACTIVE |
| BSBvpv Styrenics LLC - Beaver Cnty | Monaca | — | ◐ LIKELY ACTIVE |
| CPCherokee Pharm Llc/riverside Boro Plt | Riverside | — | ◐ LIKELY ACTIVE |
| CIColorcon Inc/upper Gwynedd | West Point | — | ◐ LIKELY ACTIVE |
| CICrc Industries INC | Warminster | — | ◐ LIKELY ACTIVE |
| CPCustom Processing Services INC | Reading | 100–499 | ◐ LIKELY ACTIVE |
| DCDart Container CORP of Pennsylvania | Leola | — | ◐ LIKELY ACTIVE |
| DCDober Chemical Corporation | Hazleton | — | ◐ LIKELY ACTIVE |
| ETEastern Technologies | Morgantown | 20–99 | ◐ LIKELY ACTIVE |
Eastman Chemical Company | West Elizabeth | — | ◐ LIKELY ACTIVE |
| ENEllwood Natl Forge | Irvine | — | ◐ LIKELY ACTIVE |
| ECEntegris Chester Plant | Chester | — | ◐ LIKELY ACTIVE |
| EDEsschem Div of Justi Group Inc/linwood | Linwood | — | ◐ LIKELY ACTIVE |
| EEEsstech Essington Fac | Essington | — | ◐ LIKELY ACTIVE |
| FLFedchem Llc/bethlehem | Bethlehem | 20–99 | ◐ LIKELY ACTIVE |
| FAFlexsys Amer LTD Par/monongahela | Monongahela | — | ◐ LIKELY ACTIVE |
| FMFragrance Manufacturing, INC. | Allentown | 100–499 | ◐ LIKELY ACTIVE |
| FOFunction of Beauty | Paxinos | 20–99 | ◐ LIKELY ACTIVE |
| GGelest/falls | Morrisville | — | ◐ LIKELY ACTIVE |
| GSGlaxo Smithkline/upper Providence | Collegeville | — | ◐ LIKELY ACTIVE |
| GCGuy Chemical CO INC | Somerset | 100–499 | ◐ LIKELY ACTIVE |
| HLHammond Lead Products/pottstown | Pottstown | — | ◐ LIKELY ACTIVE |
| HCHenwil CORP | Newell | 20–99 | ◐ LIKELY ACTIVE |
| HFHeucotech Fairless Hills Plt | Fairless Hills | — | ◐ LIKELY ACTIVE |
| HCHomer City Gen Lp/center Twp | Homer City | — | ◐ LIKELY ACTIVE |
| ICIneos Composites Us/phila | Philadelphia | — | ◐ LIKELY ACTIVE |
| IPItw Philadelphia Resins | Montgomeryville | — | ◐ LIKELY ACTIVE |
| JPJamestown Paint Co/mercer | Jamestown | — | ◐ LIKELY ACTIVE |
| JSJessop Steel LLC | Washington | — | ◐ LIKELY ACTIVE |
| JAJewel Acquisition - Midland Facility | Midland | — | ◐ LIKELY ACTIVE |
| KCKeystone Conemaugh Proj Llc/conemaugh Station | New Florence | — | ◐ LIKELY ACTIVE |
| LCLord Corporation - Saegertown Operations | Saegertown | — | ◐ LIKELY ACTIVE |
| MBMaster Builders Solutions Const Sys Bristol Plt | Levittown | — | ◐ LIKELY ACTIVE |
| MTMatheson Tri-gas | Palm | — | ◐ LIKELY ACTIVE |
| MSMenarini Silicon Biosystems INC | Huntingdon Valley | — | ◐ LIKELY ACTIVE |