| CLColjen Leasing LTD Elpaso Asphalt | Colorado Springs | — | ◇ UNVERIFIED |
| CDColo Dept of Highways | Unknown | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5002 | Grand Junction | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5009 | Aurora | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5015 | Unk | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation | Alamosa | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation #5006 | Briggsdale | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation #5011 | Pueblo | — | ◇ UNVERIFIED |
| CPColorado Pavement Maintenance INC | Rifle | — | ◇ UNVERIFIED |
| CSColorado Seal & Stripe INC | Littleton, 4.8 Mi Se of | — | ◇ UNVERIFIED |
| CRConnell Resources INC | Steamboat Springs | — | ◇ UNVERIFIED |
| CRConnell Resources Inc_wellington Downs P | Fort Collins | — | ◇ UNVERIFIED |
| DODeery Oil CO Dba the Gilsabind Company | Mack | — | ◇ UNVERIFIED |
| DLDominic Leone Const. | Trinidad | — | ◇ UNVERIFIED |
| DKDon Kehn Const INC | Fort Collins | — | ◇ UNVERIFIED |
| DKDon Kehn Const INC | Fort Collins | — | ◇ UNVERIFIED |
| DPDuggan Petroleum | Littleton | — | ◇ UNVERIFIED |
| EAEconomy Asphalt & Concrete Services, LLC | Denver | — | ◇ UNVERIFIED |
| ECElam Const INC V855 Asphalt Plt | Mesa County | — | ◇ UNVERIFIED |
| ERElam Roland Hma Plant | Grand Junction | — | ◇ UNVERIFIED |
 Envirotech Services | Evans | — | ◇ UNVERIFIED |
| EEErickson Environmental | Out of State | — | ◇ UNVERIFIED |
| FUFarmers Union Coop | Denver | — | ◇ UNVERIFIED |
| FCFast Const CO | Commerce City | — | ◇ UNVERIFIED |
| FKFj Kent | Vail | — | ◇ UNVERIFIED |
| FPFlatiron Paving | Breckenridge | — | ◇ UNVERIFIED |
| FAFlorence Asphalt | Portable | — | ◇ UNVERIFIED |
| FAFlorence Asphalt CO | Florence | — | ◇ UNVERIFIED |
| GOGeorge Oil | Lafayette | — | ◇ UNVERIFIED |
| GHGerald H. Phipps (con-e-co Lo Pro Cbp) | Denver | — | ◇ UNVERIFIED |
| GSGil Son Paving CO Various Sites | Castle Rock | — | ◇ UNVERIFIED |
| GCGrand Const | Montrose | — | ◇ UNVERIFIED |
| GRGrand River Const CO | Glenwood Springs | — | ◇ UNVERIFIED |
| GCGranite Construction Company | Salt Lake City, Ut | — | ◇ UNVERIFIED |
| GIGreenlight Investments LLC | Loveland | — | ◇ UNVERIFIED |
| GOG&s Oil Products INC | Boulder | — | ◇ UNVERIFIED |
| GCGunnison CO Asphalt | Gunnison | — | ◇ UNVERIFIED |
| H3Highway 34 Facility | Johnstown | — | ◇ UNVERIFIED |
| HIHotmix INC Portable Facility | Englewood | — | ◇ UNVERIFIED |
| KWKiewet Western Company | Littleton | — | ◇ UNVERIFIED |
| KWKiewit Western CO. (astec Abp) | Colorado Springs | — | ◇ UNVERIFIED |
| LWLafarge West, INC. | Boulder Area | — | ◇ UNVERIFIED |
| LWLea Win INC | Fort Lupton, 6.8 Mi Ne of | — | ◇ UNVERIFIED |
| LCLedcor Cmi - Port Generator | Montrose Area | — | ◇ UNVERIFIED |
| LCLongmont Co-op | Longmont | — | ◇ UNVERIFIED |
| MMMartin Marietta - Monaghan Asphalt | Aurora | — | ◇ UNVERIFIED |
| MPMcatee Paving CO | Logan County | — | ◇ UNVERIFIED |
| MOMerchants Oil - Merchants Oil - | Denver | — | ◇ UNVERIFIED |
| MOMesa Oil INC | Golden | — | ◇ UNVERIFIED |
| MGMountain Gravel & Construction CO | Cortez | — | ◇ UNVERIFIED |
