| MSMeso Scale Diagnostics, LLC | Rockville | MD | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
| NSNaval Support Facility, Indian Head | Indian Head | MD | Chemical Manufacturing325920 | — | ◐ LIKELY ACTIVE |
| PIPrecigen INC | Germantown | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| RCRust-oleum Corporation - Hagerstown | Williamsport | MD | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| SASimplot Ab Retail, INC. | Pocomoke City | MD | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| SISpectron, INC. | Elkton | MD | Chemical Manufacturing325188 | — | ◐ LIKELY ACTIVE |
| SPSupernus Pharmaceuticals, INC | Rockville | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| TLTrigen Laboratories | Salisbury | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| UTUnited Therapeutics Corporation | Beltsville | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| APAstrazeneca, Plp | Frederick | MD | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| BDBecton Dickinson | Sparks | MD | Chemical Manufacturing325413 | — | ◐ LIKELY ACTIVE |
| CICargill, Inc.-salt Division | White Marsh | MD | Chemical Manufacturing325998 | — | ◐ LIKELY ACTIVE |
| CFCase-mason Filling, INC. | Essex | MD | Chemical Manufacturing325620 | — | ◐ LIKELY ACTIVE |
| DDDupont Dow Elastomers | Elkton | MD | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| GVGen Vec | Gaithersburg | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| KFKop Flex | Hanover | MD | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| MIMedimmune INC | Frederick | MD | Chemical Manufacturing325414 | — | ◐ LIKELY ACTIVE |
| MIMillennium Inorganic Chemicals St Helena Plant | Baltimore | MD | Chemical Manufacturing325188 | — | ◐ LIKELY ACTIVE |
| NNNew Ngc INC (dba National Gypsum Co) | Belcamp | MD | Chemical Manufacturing325520 | — | ◐ LIKELY ACTIVE |
On Demand Pharmaceuticals, INC. | Rockville | MD | Chemical Manufacturing325412 | — | ◐ LIKELY ACTIVE |
| OBOrigin Baltimore Terminal LLC | Baltimore | MD | Chemical Manufacturing325000 | — | ◐ LIKELY ACTIVE |
| TMThe Mill of Upperco, LLC | Hampstead | MD | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| TTThermo Trilogy CORP | Columbia | MD | Chemical Manufacturing325320 | — | ◐ LIKELY ACTIVE |
| ABAdvanced Bioscience Laboratories, INC | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| AUAirgas Usa, LLC | Hyattsville | MD | Chemical Manufacturing325120 | — | ◇ UNVERIFIED |
| ARAlexandria Real Estate Equities, INC. | Rockville | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| ASAll State Welding Products | Taneytown | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ACArcal Chemicals INC | Seat Pleasant | MD | Chemical Manufacturing325199 | — | ◇ UNVERIFIED |
| AIAshland INC | Elkton | MD | Chemical Manufacturing325132 | — | ◇ UNVERIFIED |
| APAstrazeneca, Plp | Frederick | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| AUAtotech USA | Baltimore | MD | Chemical Manufacturing325998 | — | ◇ UNVERIFIED |
| ASAuto-chlor Systems of Baltimore | Baltimore | MD | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| BIBlind Industries and Services of Md | Baltimore | MD | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| BSBraden Sutphin Ink CO | Savage | MD | Chemical Manufacturing325910 | — | ◇ UNVERIFIED |
| CPCapricorn Pharma | Frederick | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| CCCentral Chemical CORP | Elkton | MD | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| CCCentral Chemical (hagerstown) | Hagerstown | MD | Chemical Manufacturing325312 | — | ◇ UNVERIFIED |
| CMClorox Manufacturing Company | Aberdeen | MD | Chemical Manufacturing325612 | — | ◇ UNVERIFIED |
| EIEisai, INC | Baltimore | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EIEisai, INC. | Baltimore | MD | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| EFElkton Farm Firehole | Elkton | MD | Chemical Manufacturing325920 | — | ◇ UNVERIFIED |
| EBEmergent Biosolutions | Rockville | MD | Chemical Manufacturing325412 | — | ▲ REPORTED CLOSED |
| ERExcalibur Realty Company | Beltsville | MD | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| FAFarmers and Planters Ag Llc> | Salisbury | MD | Chemical Manufacturing325320 | — | ◇ UNVERIFIED |
| FTFleetwood Travel Trailers | Hancock | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |
| GSGeo Specialty Chemicals | Baltimore | MD | Chemical Manufacturing325131 | — | ◇ UNVERIFIED |
| GUGlaxosmithkline USA | Rockville | MD | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| GCGoldwell Cosmetics USA INC | Linthicum Heights | MD | Chemical Manufacturing325620 | — | ◇ UNVERIFIED |
| GWGore, W.l. - Elk Creek Plant | Elkton | MD | Chemical Manufacturing325221 | — | ◇ UNVERIFIED |
| GMGti Maryland LLC | Centreville | MD | Chemical Manufacturing325411 | — | ◇ UNVERIFIED |