No. No. 86-5547, 815 F.2d 949/25 ERC 1949/(3d Cir., 04/09/1987) The court holds that the Army Corps of Engineers is not subject to mandamus to compel enforcement of the conditions of a dredge-and-fill permit issued under ?? 404 of the Federal Water Pollution Control Act (FWPCA) and ?? 10 of the Rivers and Harbors Act (RHA), since the decision to enforce is a matter committed to the Corps' discreti