DEQ issues 401 certifications for hydroelectric projects and the Federal Energy Regulatory Commission administers the federal licensing process. The water quality certification typically includes operating conditions designed to ensure project operations will not violate water quality standards.
Middle Fork Irrigation DistrictDraft Water Quality CertificationDraft Evaluation and Findings Report
Draft Water Quality Certification
Draft Evaluation and Findings Report
Lower Columbia RiverDEQ's letter of objection to EPA's draft NPDES permits for Lower Columbia River (May 15, 2020)
DEQ's letter of objection to EPA's draft NPDES permits for Lower Columbia River (May 15, 2020)
Certification Conditions
Erosion and Sediment Control Plan
Turbidity Management Plan
Certification Letter
Evaluation and Findings Report
Certification Letter
Settlement Agreement
Certification Conditions
Water Quality Certification Modification
Modification Letter
Public Notice (2017)
License Amendment - Certification Letter
License Amendment - Final Conditions
License Amendment - Evaluation and Findings Report
Clackamas River Project Water Quality Management and Monitoring Plan
401 Certification and Conditions
Clackamas River TMDL Order
Clackamas River Project Total Maximum Daily Load Implementation Plan
Final Evaluation and Findings
Cover Letter
Certifications Conditions
401 Certificate
Certification Conditions and Water Quality Management Plan
Marilyn Fonseca Section 401 Hydropower Program
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