All CDBG sub-recipients are required to complete the HUD environmental review process if their project or activity is funded in whole or part with HUD dollars. The environmental review process is regulated by the Code of Federal Regulations found at 24 CFR Part 58. The size and scope of the environmental review required depends on the size and nature of the project. The resources below will assist you in completing a review and CDBG staff are available to provide technical assistance as needed.