| C0Caltrans - 07-329604 | Los Angeles | CA | — | ◇ UNVERIFIED |
| CDCaltrans Dist 8 Construction- Ea 08-0k2934 | Yucaipa | CA | — | ◇ UNVERIFIED |
| CDCaltrans Dist 8 Construction Ea 08-1f1414 | Rainbow | CA | — | ◇ UNVERIFIED |
| CDCaltrans Dist 8 Construction - Ea 081l1804 | Riverside | CA | — | ◇ UNVERIFIED |
| CDCaltrans Dist 8 Ea 08-0k8404 | San Bernardino | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction - Ea 08-1c0814 | Coachella | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction Ea 08-1c08u4 | Blythe | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction - Ea:08-1c8504 | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction Ea 08-1h2004 | Desert Center | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction Ea 081h9924 | Hemet | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction Ea# 08-1k4004 | Temecula | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction Ea# 08-1k6904 | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Construction - Ea 08-1l0804 | San Jacinto | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-0e33u4 | Ontario | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-0f0304 | Chino | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-0k1214 | Fontana | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-0k1224 | Hesperia | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1c0824 | Desert Center | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1c38u4 | Riverside | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1c6804 | Temecula | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1f1434 | Eastvale | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1f7304 | San Bernardino | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1f9904 | Victorville | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1g88004 | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| CDCaltrans District 8 Ea 08-1j7204 | San Bernardino | CA | — | ◇ UNVERIFIED |
| CDCaltrans, District Number 12, Div. Construction | Tustin | CA | — | ◇ UNVERIFIED |
| CFCaron Fine Wood Products | Champlain | NY | — | ◇ UNVERIFIED |
| CFCavenham Forest Industries, LLC | Mobile | AL | — | ◇ UNVERIFIED |
| CPCedar Poles | Oldtown | ID | — | ◇ UNVERIFIED |
| CNCentral Nebraska Wood Preservers, INC. | Sutton | NE | — | ◇ UNVERIFIED |
| CPCentral Post and Treating CO Facility | Lewistown | MT | — | ◇ UNVERIFIED |
| CWCentral Wood Preserving CO. | Slaughter | LA | — | ◇ UNVERIFIED |
| CFChicago Flameproof | Montgomery | IL | — | ◇ UNVERIFIED |
| CCChurchill Coatings Corporation | Springfield | VT | — | ◇ UNVERIFIED |
| CUCimsa USA LLC | Beaverton | OR | — | ◇ UNVERIFIED |
| COCity of Alameda | Alameda | CA | — | ◇ UNVERIFIED |
| CFC&j Fencing | San Ramon | CA | — | ◇ UNVERIFIED |
| CPCoastal Plain Treating CO. | Tifton | GA | — | ◇ UNVERIFIED |
| CWCoast Wood Preserving | Ukiah | CA | — | ◇ UNVERIFIED |
| CWColeman-evans Wood Preserving CO. | Jacksonville | FL | — | ◇ UNVERIFIED |
| CSColumbia Steel Casting CO INC | Portland | OR | — | ◇ UNVERIFIED |
| CFColville Fish and Wildlife Facility | Coulee Dam | WA | — | ◇ UNVERIFIED |
| CPColville Post and Poles INC | Colville | WA | — | ◇ UNVERIFIED |
| CFComponent Finishing Unlimited | Louisville | KY | — | ◇ UNVERIFIED |
| CJCondon Johnson & Associates | Berkeley | CA | — | ◇ UNVERIFIED |
| CWConrad Wood Preserving CO | Arbuckle | CA | — | ◇ UNVERIFIED |
| CWConsumers Wood Preserving Company | W Elizabeth | PA | — | ◇ UNVERIFIED |
| CBCon-tech Building Components, INC. | Moscow Mills | MO | — | ◇ UNVERIFIED |
| CCCopper Care Wood Preservatives | Columbus | NE | — | ◇ UNVERIFIED |
| CCCove City Wood Preserving, INC. | Cove City | NC | — | ◇ UNVERIFIED |