| UKU281-084 Ka 2370-03 I | Russell | KS | — | ◇ UNVERIFIED |
| UKU40-100 Ka 7313-01 | Sharon Springs | KS | — | ◇ UNVERIFIED |
| UAUintah Advantage, Llc- Petroleum Processing Plant | Uintah County | UT | — | ◇ UNVERIFIED |
| UBUlland Brothers INC - Plant 3 | Cloquet | MN | — | ◇ UNVERIFIED |
| UBUlland Brothers INC - Plant 3401 | Virginia | MN | — | ◇ UNVERIFIED |
| UBUlland Brothers INC - Plant 3451 | Portable | MN | — | ◇ UNVERIFIED |
| UIUltra Ii Portable Asphalt Plant | Belvidere | IL | — | ◇ UNVERIFIED |
| UIUltramar INC | Wilmington | CA | — | ◇ UNVERIFIED |
| UAUnion Asphalt | Santa Maria | CA | — | ◇ UNVERIFIED |
| UCUnion Carbide | Penuelas | PR | — | ◇ UNVERIFIED |
| UOUnion Oil CO of Cal | Los Angeles | CA | — | ◇ UNVERIFIED |
| UQUnion Quarries Inc/bonny Brook | Carlisle | PA | — | ◇ UNVERIFIED |
| UMUnique Machine Main Plant | Anchorage | AK | — | ◇ UNVERIFIED |
| UAUnited Asphalt Supply | Canton | IL | — | ◇ UNVERIFIED |
| UAUnited Asphalt Supply INC | Macomb | IL | — | ◇ UNVERIFIED |
| UCUnited Companies - United Companies - | Grand Junction | CO | — | ◇ UNVERIFIED |
| UMUnited Marble & Granite INC | Santa Clara | CA | — | ◇ UNVERIFIED |
| UMUnited Metro Materials - Beeline Asphalt Plant | Scottsdale | AZ | — | ◇ UNVERIFIED |
| UMUnited Metro Materials INC (dba Cemex Sacaton Plant) | Maricopa | AZ | — | ◇ UNVERIFIED |
| URUnited Refinery Springdale Terminal | Springdale | PA | — | ◇ UNVERIFIED |
| URUnited R.t.m., INC. | Los Angeles | CA | — | ◇ UNVERIFIED |
| USUnites States Coastguard Ca | San Pedro | CA | — | ◇ UNVERIFIED |
| UAUniversal Asphalt Company, INC. | Chino | CA | — | ◇ UNVERIFIED |
| UUnknown | Stockton | CA | — | ◇ UNVERIFIED |
| UUnocal | Saugus | CA | — | ◇ UNVERIFIED |
| URUnocal Retort | Unk | CO | — | ◇ UNVERIFIED |
| UVUpper Valley Materials Progreso Plant | Progreso | TX | — | ◇ UNVERIFIED |
| UCU.s. Concrete Products | Brooklyn | MD | — | ◇ UNVERIFIED |
| UOUS Oil and Refining CO Marine Terminal | Tacoma | WA | — | ◇ UNVERIFIED |
| UPU.s. Polyco | Ennis | TX | — | ◇ UNVERIFIED |
| UPUS Postal Service | Portland | OR | — | ◇ UNVERIFIED |
| USUtah Sealcoat Inc | Springville | UT | — | ◇ UNVERIFIED |
| VAVaagen Asphalt and Paving INC 00064 | Portable | ID | — | ◇ UNVERIFIED |
| VAVado Asphalt Plant | Las Cruces | NM | — | ◇ UNVERIFIED |
| VAValero Arkansas City Terminal | Arkansas City | KS | — | ◇ UNVERIFIED |
| VBValero Benicia Asphalt Plant | Benicia | CA | — | ◇ UNVERIFIED |
| VCValero Corner Store 2351 | Sweeny | TX | — | ◇ UNVERIFIED |
| VMValero Marketing and Supply Company | Meraux | LA | — | ◇ UNVERIFIED |
| VOValero Olympic Tank Farm | Wilmington | CA | — | ◇ UNVERIFIED |
| VPValero Partners Three Rivers | Three Rivers | TX | — | ◇ UNVERIFIED |
| VRValero Refinery Three Rivers | Three Rivers | TX | — | ◇ UNVERIFIED |
| VRValero Refining Company | Benicia | CA | — | ◇ UNVERIFIED |
| VTValero Texas City Refinery Fire | Texas City | TX | — | ◇ UNVERIFIED |
| VAValley Asphalt # 13 (1409000029) | Ross, Township of | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt #14 (1431342852) | Newtown | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt (1431400140) | Sharonville | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt #17 - Portable | Cleves | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt #18 - Portable | Wilmington | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt #19 (1431073386) | Cincinnati | OH | — | ◇ UNVERIFIED |
| VAValley Asphalt #24 | Lucasville | OH | — | ◇ UNVERIFIED |