The document is a letter submitted to the U.S. Department of Transportation providing comments in support of a proposed memorandum of understanding to delegate authority for certain categorical exclusions under the National Environmental Policy Act to the state of California. The letter notes that delegating this authority would reduce delays in the environmental review process for transportation projects. It urges flexibility in determining which projects qualify for categorical exclusions and supports treating a state's categorical exclusion determination as permanent. The letter also calls for uniform training and guidance to facilitate consistent implementation of the categorical exclusion process across states.