Four-Zero-One (a) Certification
Four-Zero-One (a) Certification : The requirement of Section 401(a) of the Clean Water Act that all federally issued permits be certified by the state in which the discharge occurs. The state certifies that the?proposed permit?will comply with state water quality standards and other state requirements. Acronym: (401) (a) Certification. Proposed Permit: A state NPDES permit prepared after the close of the public comment period (and when applicable, any public hearing and administrative appeals) which is sent to EPA for review before final issuance by the state
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