THIS CASE CONCERNS DISCHARGES OF RAW MATERIALS AND ACIDIC, METAL-LADEN LEACHATE BY THE DEFENDANT IN VIOLATION OF CWA, RCRA,CERCLA AND SDWA. PHELPS DODGE HAS COVERED PORTIONS OF A 4-MILE REACH OF CHASE CREEK IN AZ. AND ITS WATERSHED WITH LOW-GRADE COPPER ORE & MINE-OVERBURDEN THAT IS IN SOME PLACES 1000 FT. THICK. CHASE CREEK IS A WATER OF THE U.S. WHEN THIS MATERIAL COMES IN CONTACT WITH THE WATER FLOW OF CHASE CREEK, IT GENERATES AND ACIDIC LEACHATE. LEACHATE DISCHARGING FROM ABANDONED UN- DERGROUND MINES, INADEQUATELY CLOSED, ALSO CONTRIBUTES TO THE LEACHATE PROBLEM. PHELPS DODGE HAS A COLLECTION SYSTEM FOR THIS LEACHATE FOR COPPER RECOVERY WHICH WORKS UNDER DRY- WEATHER CONDITIONS. HOWEVER, DURING WET WEATHER, LEACHATE BYPASSES THE COLLECTION SYSTEM AND DISCHARGES INTO THE SAN FRANCISCO RIVER (ALSO A WATER OF THE U.S.). HIGH CONCENTRATIONS OF COPPER, ZINC, MANMGANESE, CADMIUM & LEAD HAVE BEEN MEASURED IN THE S.F RIVER. RESIDUAL CONTAM- INATION HAS BEEN FOUND IN A 100-MILE REACH OF WATERS DOWN- STREAM OF THE MINE THAT INCLUDES THE S.F & GILA RIVERS AND THE SAN CARLOS RESERVOIR. THE DISCHARGE POSES A THREAT TO THE HEALTH AND WELL-BEING OF THE RESIDENTS OF NEARBY TOWNS, WHO USE THE WATERS OF THE RIVERS & RESERVOIR FOR DRINKING & RECREATION. THE DAMAGE TO THE ENVIRONMENT IN FISH KILLS & FOOD CHAIN DEPLETION HAS ADVERSE EFFECTS ON TOURISM & AGRICULTU