NATURE OF THE CASE: THIS IS A CIVIL ACTION FILED PURSUANT TO SS301 & 309 OF THE CLEAN WATER ACT, 33 U.S.C. SS1311 & 1319, AGIANST PIMA CO. & THE STATE OF ARIZONA. PIMA CO. OWNS & OPERATES A WASTEWATER TRMT. FACILITY LOCATED ON MT. LEMON, AZ. THE FACILITY SERVICES 25 RESIDENTIAL CONNECTIONS IN THE MOUNTAIN RESORT COMMUNITY OF SUMMERHAVEN, WHICH IS A PRIVATELY-OWNED ENCLAVE SURROUNDED BY THE CORNADO NAT. FOREST. THE FACILITY DISCHARGES EFFLUENT INTO THE SABINO CREEK, WHICH IS THE ONLY PERENNIALLY FLOWING TROUT STREAM WITHIN REASONABLE RECREATIONAL ACCESS OF TUSCON, AZ. THE STATE WAS JOINED IN THE ACTION PURSUANT TO THE REQUIREMENT OF S309(E) OF THE ACT, 33 U.S.C. OF S1319(E). THE AZ. CENTER FOR LAW IN THE PUBLIC INTEREST WAS ADMITTED TO THE ACTION AS A PLAINTIFF-INTERVENOR. CAUSE OF ACTION: THE AGENCY ISSUED NPDES PERMIT NO. AZ0020028 TO PIMA CO. ON 12/31/72, TO REGULATE DISCHARGES TO SABINO CREEK. THE SINCE-EXPIRED PERMIT HAS BEEN CONT. IN EFFECT BY OPERATION OF S558(C) OF THE ADM. PROCEDURE ACT, 5 U.S.C. S558(C). AT VARIOUS TIMES, PLANT EFFLUENT QUALITY HAS VIOLATED THE TERMS OF THE PERMIT & STATE WATER QUALITY STANDARDS. PIMA CO. ALSO VIOLATED THE CONSTRUCTION SCHEDULES ESTABLISHED IN THE PERMIT. THE AGENCY ISSUED 4 ADM. ORDERS TO THE CO.