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U.S. Army Corp of Engineers (USACE),through its regulatory program, administers and enforces Section 10 of the Rivers and Harbors Act of 1899 (RHA) and with EPA, section 404 of the CWA.
EPA's Administrative Law Judges (ALJs) preside over administrative penalty cases brought by EPA against persons whom EPA believes have violated the CWA in some way, often for discharging pollutants or filling wetlands without a permit.