401 Dredge and Fill Reviews
Downloads folder for 401 Dredge and Fill Reviews
Information from 401 applicant to begin the 401 certification review process.
The U.S. Environmental Protection Agency published its Clean Water Act Section 401 Certification Rule in the Federal Register effective September 11, 2020 and updated by the Federal Clean Water Act Section 401 Water Quality Improvement Rule effective September 27, 2023.
Texas Commission on Environmental Quality 401 State Certification Request Form