This project aims to assist CDOT with the initial implementation of Section 118 of Colorado HB 21-1303, "The Buy Clean Colorado Act". The bill requires contractors to submit Environmental Product Declarations (EPDs) for asphalt and asphalt mixtures, cement and concrete mixtures, and steel installed on CDOT projects. Ultimately, the bill instructs CDOT to establish greenhouse gas (GHG) emission limits for these materials, and contractors on CDOT construction...