The environmental compliance phase of any transportation project occurs throughout project development and execution and runs concurrently with all phases.

The local government should identify environmental compliance issues early in the project in cooperation with the TxDOT district environmental coordinator. Requirements may impact project initiation tasks including the details in the Advance Funding Agreement (AFA).

In many projects, the preliminary design (30% complete design) is performed concurrently with the environmental compliance phase. The local government and the TxDOT district must perform their respective roles (as defined in the AFA) to properly address project scoping, prepare a categorical exclusion or other appropriate environmental document and to identify and comply with environmental permits, issues and commitments for construction transportation projects.