Complaint Date | | Status | | Case |
| | Closed | | (RCRA-03-2023-0031) Ailya Chemical Corporation |
| | Closed | | (TSCA-03-2023-0042) Monarc Construction, Inc. |
| | Closed | | (EPCRA-03-2023-0036) New Chem, LLC |
| | Closed | | (CWA-08-2023-0003) Two Medicine Water Company |
| | Closed | | (FIFRA-03-2023-0053) PelGar USA Corporation |
| | Closed | | (CWA-10-2023-0008) Brighton Development, Inc. |
| | Closed | | (RCRA-03-2023-0050) E.G.E. Corporation, Kenilworth Red Top Gas Station |
| | Closed | | (CAA-10-2023-0001) Chaucer Foods, Inc. |
| | Closed | | (CAA-10-2023-0025) Cascade View, LLC |
| | Closed | | (CWA-10-2023-0012) OBI Seafoods, LLC |
| | Closed | | (CWA-10-2023-0021) Ryan Smith and Noah Smith |
| | Closed | | (FIFRA-08-2023-0013) Care.Life, Inc. |
| | Closed | | (CAA-10-2023-0032) Univar Solutions USA, Inc. |
| | Closed | | (FIFRA-10-2023-0036) Cascade Designs, Inc. |
| | Closed | | (FIFRA-10-2023-0038) United Farm Service, Inc. |
| | Closed | | (FIFRA-10-2023-0041) Kemira Chemicals Inc. |
| | Closed | | (FIFRA-10-2023-0037) Swanson Bark & Wood Products, Inc. |
| | Closed | | (CAA-10-2023-0029) Rite Stuff Foods, Inc. |
| | Closed | | (CWA-08-2023-0005) Diana Engleman |
| | Closed | | (EPCRA-10-2023-0004) Trident Seafoods Corporation |
| | Closed | | (RCRA-08-2022-0011) Farmer's Union Oil Company of Devil's Lake |
| | Closed | | (RCRA-03-2023-0026) Gallaudet University |
| | Closed | | (CAA-10-2023-0026) Fruitsmart, Inc. |
| | Closed | | (EPCRA-03-2023-0056) Cleanedge, LLP |
| | Closed | | (FIFRA-10-2023-0018) Cascade Mountain Technologies, LLC |
| | Closed | | (FIFRA-03-2023-0047) Ramshield, LLC |
| | Closed | | (CWA-03-2023-0001) Central Hampshire Public Service District, Frenchburg Wastewater Treatment Plant |
| | Closed | | (CWA-03-2023-0041) Meenan Oil Company |
| | Closed | | (CWA-03-2023-0030) Chemalloy Company, LLC |
| | Closed | | (CERCLA-03-2023-0067) Valley Milk Products, LLC |
| | Closed | | (RCRA-03-2023-0071) Harry Parsons d/b/a Canal Boatyard, Tradestyle: Fisherman’s Wharf |
| | Closed | | (RCRA-03-2023-0054) Divya Enterprise LLC, Sunrise Mart |
| | Closed | | (RCRA-03-2023-0033) Walmart, Inc., Walmart Distribution Center #7034 |
| | Closed | | (RCRA-03-2023-0044) Sigmapharm Laboratories LLC |
| | Closed | | (CAA-03-2023-0032) Equitrans Midstream Corporation (Pennsylvania and West Virginia) |
| | Closed | | (CWA-03-2023-0022) Powhatan County, Dutoy Creek Wastewater Treatment Plant |
| | Closed | | (RCRA-03-2023-0029) MetLab, Inc. |
| | Closed | | (RCRA-03-2023-0039) Advance Stores Company, Inc., Advance Auto Distribution Center |
| | Closed | | (RCRA-03-2023-0021) L & M Fabrication and Machine, Inc. |
| | Closed | | (EPCRA-03-2023-0080) Reading Truck Body, LLC |
| | Closed | | (CAA-03-2023-0018) P1 Performance, Inc and JE Import Performance, Inc |
| | Closed | | (CWA-03-2023-0055) United Iron & Metal, LLC |
| | Closed | | (CAA-03-2023-0066) Downingtown Regional Water Pollution Control Center, Downingtown Regional Water ... |
| | Closed | | (CAA-03-2023-0063) Zimmey’s Diesel, LLC |
| | Closed | | (RCRA-03-2023-0098) Merck Sharp & Dohme Corp. |
| | Closed | | (CAA-03-2023-0096) Stoner Inc. |
| | Closed | | (CAA-EPCRA-03-2023-0069) Kerry Stock & Broth Company, Inc. |
| | Closed | | (CWA-08-2023-0006) Blackfeet Tribe of the Blackfeet IndianReservation of Montana |
| | Closed | | (EPCRA-03-2023-0105) Vibrantz Minerals LLC |
| | Closed | | (FIFRA-10-2022-0229) Grovpure, LLC |
| | Closed | | (TSCA-03-2023-0121) Python Windows, Inc. |
| | Closed | | (RCRA-03-2023-0091) Palram Americas, Inc. |
| | Closed | | (TSCA-03-2023-0084) Dorcus Construction Company, Inc. |
| | Closed | | (TSCA-03-2023-0117) Presidential Exteriors, LLC |
| | Closed | | (RCRA-03-2023-0081) Bashir Naseem Corporation, Freedom Citgo |
| | Closed | | (RCRA-03-2023-0065) TD88 LLC t/a Baymart, Baymart Liquors |
| | Closed | | (FIFRA-03-2023-0106) Plant Cell Technology, Inc. |
| | Closed | | (FIFRA-03-2023-0132) Bortek Industries, Inc. |
| | Closed | | (CAA-03-2023-0070) Schuster Concrete Ready Mix, LLC |
| | Closed | | (EPCRA-03-2023-0120) Chemalloy Company, LLC |
| | Closed | | (RCRA-03-2023-0094) Amar Petroleum Inc. and Hans Gill, LLC, Roxy Gas & Snacks |
| | Active | | (SDWA-03-2023-0005) Bear Lake Properties, LLC |
| | Closed | | (TSCA-03-2023-0131) SDG Design & Construction LLC |
| | Closed | | (CAA-03-2023-0100) Empty Tank Garage, LLC |
| | Closed | | (CAA-03-2023-0095) Westlake Natrium LLC |
| | Closed | | (RCRA-03-2023-0111) Winchester 101, LLC d/b/a Route 50 Gas Mart |
| | Closed | | (TSCA-03-2023-0110) Pella Mid-Atlantic, Inc. |
| | Closed | | (RCRA-03-2023-0119) Tastepoint Inc. |
| | Closed | | (RCRA-03-2023-0140) Davis GMC Truck, Inc. |
| | Closed | | (RCRA-03-2023-0142) Frederick Northup, Inc. |
| | Closed | | (RCRA-03-2023-0123) Alloy Surfaces Company, Inc. |
| | Closed | | (CAA-03-2023-0076) The Clemens Family Corporation |
| | Closed | | (CWA-03-2023-0097) United States Steel Corporation |
| | Closed | | (RCRA-03-2023-0139) Gene’s Orange Market, LLC |
| | Closed | | (RCRA-03-2023-0141) SPS Technologies, LLC |
| | Closed | | (RCRA-03-2023-0145) Fowler Oil Co. d/b/a Uptown Shell |
| | Closed | | (RCRA-03-2023-0128) Amuneal Manufacturing Corp. |
| | Closed | | (CAA-03-2023-0072) Symba Capital, LLC and Giant Floor and Wall Covering Co., Inc. |
| | Closed | | (FIFRA-03-2023-0146) Equine Medical and Surgical Associates, Inc. |
| | Closed | | (CWA-03-2023-0114) Schell Outer Banks LLC, Schell Brothers LLC, and David G. Horsey & Sons, Inc. |
| | Closed | | (CWA-03-2023-0103) Watco Transloading, L.L.C. |
| | Closed | | (CWA-03-2023-0115) Schell Outer Banks LLC, Governors Lewes, LP, and David G. Horsey & Sons, Inc. |
| | Closed | | (RCRA-FIFRA-03-2023-0143) GROWMARK FS, LLC |
| | Closed | | (RCRA-03-2024-0015) R.M. Roach & Sons, Inc. |
| | Closed | | (RCRA-03-2024-0018) Maryland Department of Public Safety and Correctional Services, |
| | Closed | | (RCRA-03-2024-0022) Agilent Technologies, Inc. |
| | Closed | | (RCRA-03-2024-0031) T & D Quick Stop, Inc. |
| | Closed | | (CWA-03-2024-0005) Panhandle Homes of Berkeley County, Inc. |
| | Closed | | (EPCRA-03-2024-0059) The Bullen Companies |
| | Closed | | (EPCRA-03-2024-0049) LeachGarner, Inc., d/b/a John C. Nordt |
| | Closed | | (FIFRA-03-2024-0055) ESC Brands, LLC |
| | Closed | | (CWA-03-2024-0001) Berg Brothers Recycling, Inc. |
| | Closed | | (CWA-03-2024-0029) Mid-Centre County Authority |
| | Closed | | (RCRA-03-2024-0023) OMNOVA North America, Inc. |
| | Closed | | (CWA-03-2024-0058) JO Associates LLC |
| | Active | | (FIFRA-03-2024-0079) Pallet Machinery Group, Inc. |
| | Closed | | (RCRA-03-2024-0064) Meritus Health, Meritus Medical Center |
| | Closed | | (CWA-03-2024-0003) State of Delaware, Delaware Department of Transportation |
| | Closed | | (RCRA-03-2024-0014) Entegris, Inc. |
| | Closed | | (RCRA-03-2024-0024) Southern Galvanizing Company |