| CCClarkson Construction Company (stormwater-de-soto) | De Soto | KS | — | ◇ UNVERIFIED |
| CGClassic Garden Ornaments, LTD. | Pomona | IL | — | ◇ UNVERIFIED |
| CGClassic Granite & Marble, INC. | Jessup | MD | — | ◇ UNVERIFIED |
| CSClassic Surrounds LLC | Cordele | GA | — | ◇ UNVERIFIED |
| CSClaxton Smith & Sons Concrete Company | Poca | WV | — | ◇ UNVERIFIED |
| CSClaxton Smith & Sons Concrete Company, West Charl | Charleston | WV | — | ◇ UNVERIFIED |
| CCClayton Clark | Oceanside | CA | — | ◇ UNVERIFIED |
| CLClearlake Lava Dba Clearcast Concrete | Colusa | CA | — | ◇ UNVERIFIED |
| CRClearlake Redi-mix/lakeport | Lakeport | CA | — | ◇ UNVERIFIED |
| CCClearwater Concrete INC | Ontario | OR | — | ◇ UNVERIFIED |
| CCClearwater Concrete, INC. | Kooskia | ID | — | ◇ UNVERIFIED |
| CPCleburne Plant | Cleburne | TX | — | ◇ UNVERIFIED |
| CPCleburne Plant | Cleburne | TX | — | ◇ UNVERIFIED |
| CPCleburne Plant | Cleburne | TX | — | ◇ UNVERIFIED |
| CLClemente Latham Bridgeville Plant | Monticello | NY | — | ◇ UNVERIFIED |
| CHCleveland Hma | Cleveland | TX | — | ◇ UNVERIFIED |
| CRCleveland Rmc Plant | Cleveland | TX | — | ◇ UNVERIFIED |
| CBClick Burial Vault | New Philadelphia | OH | — | ◇ UNVERIFIED |
| CWClifford W. Estes Co., INC. | Staley | NC | — | ◇ UNVERIFIED |
| CWClifford W. Estes, Co., INC. | Ottawa | IL | — | ◇ UNVERIFIED |
| CMClifton Mine | Ocala | FL | — | ◇ UNVERIFIED |
| CRClifton Ready Mix | Clifton | TX | — | ◇ UNVERIFIED |
| CLClinton Louie | Davis | CA | — | ◇ UNVERIFIED |
| CRClinton Ready Mix (fische | Clinton | MO | — | ◇ UNVERIFIED |
| CLClock Lusk | Cypress | CA | — | ◇ UNVERIFIED |
| CCCloud Concrete Products | Lexington | KY | — | ◇ UNVERIFIED |
| CCClovis Concrete - 48 Cu Yd Concrete Batch Plant No0964 | Clovis | NM | — | ◇ UNVERIFIED |
| CGClovis Gunite & Materials INC | Clovis | CA | — | ◇ UNVERIFIED |
| CGClub Green LLC | Sacramento | CA | — | ◇ UNVERIFIED |
| CBClutch & Brake Specialty Co., INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| CPCmc Plant 5 - Ict | Wichita | KS | — | ◇ UNVERIFIED |
| CRCmc Recycling | Ocala | FL | — | ◇ UNVERIFIED |
| CMC M D Properties - LLC | Santa Ana | CA | — | ◇ UNVERIFIED |
| CRCmh Restoration Group | Newport Beach | CA | — | ◇ UNVERIFIED |
| CSC&m Sand and Gravel CO | Erie, 0.6 Mi Nw of | CO | — | ◇ UNVERIFIED |
| CCC.n. Cake Trust | Torrance | CA | — | ◇ UNVERIFIED |
| CVCoachella Valley Aggregates INC | Indio | CA | — | ◇ UNVERIFIED |
| CSCoady Supply Co., INC. | Springfield | IL | — | ◇ UNVERIFIED |
| CACoast Aggregates | San Diego | CA | — | ◇ UNVERIFIED |
| CACoastal an Oldcastle CO Pensacola Block | Pensacola | FL | — | ◇ UNVERIFIED |
| CBCoastal Bridge CO LLC - Hot Mix Asphalt Plant | Sulphur | LA | — | ◇ UNVERIFIED |
| CCCoastal Cement CORP | Boston | MA | — | ◇ UNVERIFIED |
| CCCoastal Concrete Southeast Ii LLC | Charleston | SC | — | ◇ UNVERIFIED |
| CECoastal Energy Corporation / Coastal Energy Corporation | Clinton | OK | — | ◇ UNVERIFIED |
| CRCoastal Ready Mix Coden Csw | Coden | AL | — | ◇ UNVERIFIED |
| CRCoastal Resource Community Management, INC | San Juan Capistrano | CA | — | ◇ UNVERIFIED |
| CCCoast Concrete Company, LLC | Palmetto | FL | — | ◇ UNVERIFIED |
| CLCoast Land Clearing Incorporated | La Canada Flintridge | CA | — | ◇ UNVERIFIED |
| CMCoast Materials Company | Biloxi | MS | — | ◇ UNVERIFIED |
| CRCobra Ready Mix | Rialto | CA | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Robinson Crk | KY | — | ◇ UNVERIFIED |
| CICochran Industries INC - Ky | Pikeville | KY | — | ◇ UNVERIFIED |
| CPCode Precast Products INC | Shafter | CA | — | ◇ UNVERIFIED |
| CCCody Concrete Batch Plant (ct-1557) | Park | WY | — | ◇ UNVERIFIED |
| CCCody Concrete: Industrial Dra | Cody | WY | — | ◇ UNVERIFIED |
| CAColeman Asphalt Plant | Sumterville | FL | — | ◇ UNVERIFIED |
| CCColeman Conrete, INC. | Conway | NH | — | ◇ UNVERIFIED |
| CAColfax Avenue Apartments | Studio City | CA | — | ◇ UNVERIFIED |
| CLColjen Leasing LTD Elpaso Asphalt | Colorado Springs | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways | Unknown | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5002 | Grand Junction | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5009 | Aurora | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Highways #5015 | Unk | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation | Alamosa | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation #5006 | Briggsdale | CO | — | ◇ UNVERIFIED |
| CDColo Dept of Transportation #5011 | Pueblo | CO | — | ◇ UNVERIFIED |
| CCColony Club Hoa | Irvine | CA | — | ◇ UNVERIFIED |
| CFColony Frontera M52 | Anaheim | CA | — | ◇ UNVERIFIED |
| CPColorado Pavement Maintenance INC | Rifle | CO | — | ◇ UNVERIFIED |
| CSColorado Seal & Stripe INC | Littleton, 4.8 Mi Se of | CO | — | ◇ UNVERIFIED |
| CAColt Associates, LLC | Pinehurst | TX | — | ◇ UNVERIFIED |
| CCColt Concrete Industries | Pinehurst | TX | — | ◇ UNVERIFIED |
| CMColumbia Machine, INC. | Sullivan | MO | — | ◇ UNVERIFIED |
| CRColumbia Ready Mix Parker | Parker | WA | — | ◇ UNVERIFIED |
| CCComal Concrete Products INC. | New Braunfels | TX | — | ◇ UNVERIFIED |
| CACommercial Asphalt CO - Plant 903 | Rosemount | MN | — | ◇ UNVERIFIED |
| CACommercial Asphalt CO - Plant 904 | Maple Grove | MN | — | ◇ UNVERIFIED |
| CACommercial Asphalt CO - Plant 907 | Scandia | MN | — | ◇ UNVERIFIED |
| CACommercial Asphalt CO - Plant 911 | Shakopee, City of | MN | — | ◇ UNVERIFIED |
| CRCommercial Ready Mix - Ahoskie Sr 1130 | Ahoskie | NC | — | ◇ UNVERIFIED |
| CCCommodore Common Hall at 128 | Hermosa Beach | CA | — | ◇ UNVERIFIED |
| CCCommodore Condo | Hermosa Beach | CA | — | ◇ UNVERIFIED |
| CBCommonwealth Block CO INC | Lexington | KY | — | ◇ UNVERIFIED |
| CECommonwealth Equipment - Portable 52462 | Richmond | VA | — | ◇ UNVERIFIED |
| CACommunity Asphalt | Vero Beach | FL | — | ◇ UNVERIFIED |
| CACommunity Asphalt CORP. | West Palm Beach | FL | — | ◇ UNVERIFIED |
| CRCommunity Ready Mix of Beardstown INC | Beardstown | IL | — | ◇ UNVERIFIED |
| CRCommunity Ready Mix of Pittsfield INC | Pittsfield | IL | — | ◇ UNVERIFIED |
| CACompetitive Asphalt Coatings, Inc, Dba Viking Materials | Redlands | CA | — | ◇ UNVERIFIED |
| CTCompound Technologies | Cartersville | GA | — | ◇ UNVERIFIED |
| CPConart Precast, LLC | Cobb | GA | — | ◇ UNVERIFIED |
| CIConcast INC | Zumbrota | MN | — | ◇ UNVERIFIED |
| CIConcast INC | Wanamingo | MN | — | ◇ UNVERIFIED |
| CRConcord Ready Mix INC | Antioch | CA | — | ◇ UNVERIFIED |
| CAConcrete Aggregate Products - Weaverville | Weaverville | CA | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant | Jackson | WY | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant-artesia, Gcp5-1707 | Artesia | NM | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant-carlsbad, Gcp5-6785 | Carlsbad | NM | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant-carrizozo, Gcp5-6747 | Carrizozo | NM | — | ◇ UNVERIFIED |
| CBConcrete Batch Plant-eagle Ready Mix, Gcp5-3488 | Gamerco | NM | — | ◇ UNVERIFIED |