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State air permitting agency assigning EPA implementation and enforcement

Can a state air permitting agency unilaterally assign to EPA the implementation and enforcement of the requirements of 40 CFR Part 68.215(e)?

No, such reassignment of responsibilities can only be achieved by the state entering into a written agreement with the Administrator under which EPA will implement and enforce the verification and oversight requirements of 40 CFR §68.215(e) (40 CFR §68.215(d)).