10/21/97 ON JANUARY 18, 1993, THE EPA INSPECTED RESPONDENT MUFFLER SHOP LOCATED AT 4417 HAMILTON ROAD, COLUMBUS, GA. THE INSPECTION WAS CONDUCTED TO DETERMINE COMPLIANCE WITH SECTION 203 OF CAA. AS A RESULT OF THE INSPECTION, EPA DETERMINED THAT ED'S MUFFLER TAMPERED WITH THE EXHAUST SYSTEM OF TWENTY-EIGHT MOTOR VEHICLES BY INSTALLING A DUAL EXHAUST SYSTEM AND A CATALYTIC CONVERTER AND BY INSTALLING ON 27 VEHICLES THE INCORRECT AFTERMARKET CONVERTER. EPA ALSO DETERMINED THAT RESPONDENT FAILED TO DOCUMENT AND MAINTAIN THE REQUIRED RECORDS REGARDING THE INSTALLATION OF CATALYTIC CONVERTERS ON 33 MOTOR VEHICLES.