THE COMPLAINT ALLEGED THAT RESPONDENT DISCHARGED WASTE WATER TO THE TELL CITY POTW WHICH CONTAINED HIGH AMOUNTS OF BOD. THE COMPLAINT FURTHER ALLEGED THAT THE BOD FROM RESPONDENT'S FACILITY CAUSED INTERFERENCE AT THE POTW, IN VIOLATION OF SECTION 307(D) OF THE CLEAN WATER ACT. THE CASE WAS SETTLED FOR A CIVIL PENALTY OF $50,000. RESPONDENT HAD PREVIOUSLY ACHIEVED COMPLIANCE BY INSTALLING A BIOLOGICAL PRETREATMENT SYSTEM AT ITS FACILITY.