Section 238.3 - References(a) Executive Order 11988-Floodplain Management, dated 24 May 1977.(b) U.S. Water Resources Council, Floodplain Management Guidelines, (43 FR 6030), to February 1978.(c) ER 1105-2-811.(d) ER 1140-2-302.(e) ER 1140-2-303.(f) EP 1165-2-2.