| RMRocky Mountain Radiographic | Englewood | CO | — | ◇ UNVERIFIED |
| RDRodgard - Division of Hutchinson Industries | Buffalo | NY | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc- Cincinnati Plant | Cincinnati | OH | — | ◇ UNVERIFIED |
| RARohm and Haas Chemicals Llc, Lone Star Plant | Deer Park | TX | — | ◇ UNVERIFIED |
| RARohm and Haas CO | Chicago Heights | IL | — | ◇ UNVERIFIED |
| RHRohm & Haas Electronic Materials LLC | Freeport | NY | — | ◇ UNVERIFIED |
| RCRollex CORP - Lunt Ave | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| RCRtb Composites LLC | Minden | NE | — | ◇ UNVERIFIED |
| RCRudolf-venture Chemicals | Rock Hill | SC | — | ◇ UNVERIFIED |
| RPRutland Plastic Technologies, INC. | Pineville | NC | — | ◇ UNVERIFIED |
| RPRycoline Products INC | Clifton | NJ | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield | MA | — | ◇ UNVERIFIED |
| SISabic Innovative Plastics | Pittsfield | MA | — | ◇ UNVERIFIED |
| SISaddlehorn Interconnect 16-16-1222-12 | Hudson | CO | — | ◇ UNVERIFIED |
| SKSafety Kleen CORP | Canton | MA | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| SSSafety-kleen Systems INC - Kimberly Facility - Fka U S Oil | Kimberly | WI | — | ◇ UNVERIFIED |
| SKSafety Kleen Systems INC - South Plainfield Facility | South Plainfield | NJ | — | ◇ UNVERIFIED |
| SPSaginaw Plant | Saginaw | TX | — | ◇ UNVERIFIED |
| SOSales Oil CO | Denver | CO | — | ◇ UNVERIFIED |
| SPSalga Plastics, INC. | Gallatin | TN | — | ◇ UNVERIFIED |
| SWSaltville Waste Disposal Ponds | Saltville | VA | — | ◇ UNVERIFIED |
| SPSamos Polymers | Stanley | NC | — | ◇ UNVERIFIED |
| SLSan Luis Rey Wastewater Treatment Plant | Oceanside | CA | — | ◇ UNVERIFIED |
| SPSan Pablo Bay Pipeline Company LLC | Tracy | CA | — | ◇ UNVERIFIED |
| SFSanta Fe Springs Refinery | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| SISantec INC | Linden | NJ | — | ◇ UNVERIFIED |
| SRSa Recycling | Phenix City | AL | — | ◇ UNVERIFIED |
| SRSa Recycling | Chickasaw | AL | — | ◇ UNVERIFIED |
| SISarvetnick Industries | Jersey City | NJ | — | ◇ UNVERIFIED |
| SNSasol North America INC - Lab Plant | Westlake | LA | — | ◇ UNVERIFIED |
| SASauget Area 2 Sites Group | Sauget | IL | — | ◇ UNVERIFIED |
| SISaybolt INC | Linden | NJ | — | ◇ UNVERIFIED |
| SPScannell Properties | Fords | NJ | — | ◇ UNVERIFIED |
| SISchenectady International Research | Niskayuna | NY | — | ◇ UNVERIFIED |
| SDScientific Design CO INC | Little Ferry | NJ | — | ◇ UNVERIFIED |
| SPScott Petroleum Greenville Terminal | Greenville | MS | — | ◇ UNVERIFIED |
| SCSdc Coatings INC | Anaheim | CA | — | ◇ UNVERIFIED |
| SCSelect Chemicals, LTD. | Yorktown | TX | — | ◇ UNVERIFIED |
| SSSencorp Systems Incorporated | Hyannis | MA | — | ◇ UNVERIFIED |
| SSepramet | Houston | TX | — | ◇ UNVERIFIED |
| SFSequoyah Fuels CORP. | Gore | OK | — | ◇ UNVERIFIED |
| SRSgr Railyard | San Patricio | TX | — | ◇ UNVERIFIED |
| SNSgs North America | Deer Park | TX | — | ◇ UNVERIFIED |
| S1Shell 1416 - Talleyville | Wilmington | DE | — | ◇ UNVERIFIED |
| SASherwin Alumina Plant | Ingleside | TX | — | ◇ UNVERIFIED |
| SCSierra Chemical CO | Sparks | NV | — | ◇ UNVERIFIED |
| SASigma Aldrich Chemical Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SPSigma Plastronics INC | Brighton | MI | — | ◇ UNVERIFIED |
| SCSigna Chemistry INC | Rochester | NY | — | ◇ UNVERIFIED |
| SGSi Group/ Schenectady International | Schenectady | NY | — | ◇ UNVERIFIED |
| SLSilar Laboratories | Scotia | NY | — | ◇ UNVERIFIED |
| SISilpak INC | Pomona | CA | — | ◇ UNVERIFIED |
| SASilver Anvil Engineering Corporation | Golden | CO | — | ◇ UNVERIFIED |
| SSSimplot Soilbuilders Prosser | Prosser | WA | — | ◇ UNVERIFIED |
| SOSinclair Oil Tulsa Refining Tulsa Trucking | Tulsa | OK | — | ◇ UNVERIFIED |
| SISkasol INC | Oakland | CA | — | ◇ UNVERIFIED |
| SPSk Pucore INC USA | Covington | GA | — | ◇ UNVERIFIED |
| SQSkw Quab Chemicals | Theodore | AL | — | ◇ UNVERIFIED |
| SCSkyline Composite INC | Fall River | MA | — | ◇ UNVERIFIED |
| SLSkynano, LLC | Knoxville | TN | — | ◇ UNVERIFIED |
| SCSmall CORP INC | Greenfield | MA | — | ◇ UNVERIFIED |
| SDSmfi Dba Four Seasons Leisure Products | Montrose | CO | — | ◇ UNVERIFIED |
| SOSmooth on | Easton | PA | — | ◇ UNVERIFIED |
| SOSnap on Diagnostics | Elkhorn | WI | — | ◇ UNVERIFIED |
| SCSnapvent CO | Knoxville | TN | — | ◇ UNVERIFIED |
| SCSoluol Chemical CO INC | West Warwick | RI | — | ◇ UNVERIFIED |
| SISolutia INC | Trenton | MI | — | ◇ UNVERIFIED |
| SISolutia INC Krummrich Il (part) | Sauget | IL | — | ◇ UNVERIFIED |
| SPSolutia Plant | Trenton | MI | — | ◇ UNVERIFIED |
| SCSolvay Chemicals, INC. Parachute Plant | Parachute | CO | — | ◇ UNVERIFIED |
| SSSolvay Specialty Polymers USA | Borger | TX | — | ◇ UNVERIFIED |
| SUSolvay USA INC | New Brunswick | NJ | — | ◇ UNVERIFIED |
| SUSolvay USA Incorporated | Hammond | IN | — | ◇ UNVERIFIED |
| SUSolvay USA Inc.-silver Bow Plant | Silver Bow | MT | — | ◇ UNVERIFIED |
| SISongwon International Americas INC. - La Porte | La Porte | TX | — | ◇ UNVERIFIED |
| SASoutheastern Adhesives | Lenoir | NC | — | ◇ UNVERIFIED |
| SBSoutheastern Biodiesel, LLC | Athens | AL | — | ◇ UNVERIFIED |
 Southern Ionics INC. - Lake Charles Facility | Carlyss | LA | — | ◇ UNVERIFIED |
 Southern States Chemical | Wilmington | NC | — | ◇ UNVERIFIED |
| STSouth Texas Chlorine, INC. | Harlingen | TX | — | ◇ UNVERIFIED |
| SISpace INC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SLSpartech LLC | Greenville | OH | — | ◇ UNVERIFIED |
| SPSpartech Plastics LLC | Muncie | IN | — | ◇ UNVERIFIED |
| SPSpartech Polycast Warehouse | Hackensack | NJ | — | ◇ UNVERIFIED |
| SPSpartech Polycom INC | Kearny | NJ | — | ◇ UNVERIFIED |
| SCSpaulding Composites CO | Dekalb | IL | — | ◇ UNVERIFIED |
| SMSpears Manufacturing Company | Sylmar | CA | — | ◇ UNVERIFIED |
| SCSpecialty Chemical Systems, INC | Pottstown | PA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Plymouth | NC | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Wisconsin Rapids | WI | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Jay | ME | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Selma | AL | — | ◇ UNVERIFIED |
| SMSpecialty Minerals INC | Zachary | LA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Incorporated | Franklin | VA | — | ◇ UNVERIFIED |
| SMSpecialty Minerals Inc, Owner, and Specialty Minerals Mississippi Inc, Operator | Brookhaven | MS | — | ◇ UNVERIFIED |
| SPSpecialty Polymers | Leominster | MA | — | ◇ UNVERIFIED |
| SPSpecialty Products | Lakewood | WA | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC | Institute | WV | — | ◇ UNVERIFIED |
| SPSpecialty Products Us, LLC - Glutaraldehyde Plant | Institute | WV | — | ◇ UNVERIFIED |
