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CWA Section 401 Certification

Economic Analysis for the Proposed "Updating Regulations on Water Quality Certification" Rule

On August 8, 2019, the EPA signed a proposed rule to implement Clean Water Act section 401. The economic analysis below supports the proposed “Updating Regulations on Water Quality Certifications” rule.

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Economic Analysis for “Updating Regulations on Water Quality Certifications” rule (PDF)(32 pp, 982 K)