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439. Sections 10 and 14 of the Rivers & Harbors Appropriation Act of 1899; Chapter 425, 30 Stat. 1151 (March 3, 1899), 33 U.S.C. § 403 and 33 U.S.C. § 408, respectively; Federal Water Pollution Control Act, Public Law 92-500 (Oct. 18, 1972), 33 U.S.C. § 1251 et seq.