PRETREATMENT CWA. INTERNATIONAL EXTRUSIONS, INC., AN INDUSTRIAL USER DIS- CHARGING TO THE CITY OF DETROIT FAILED TO COMPLY WITH ITS DISCHARGE LIMITED BY THE APPLICABLE PRETREATMENT STANDARDS; FAILED TO USE APPROVED TEST METHODS REQUIRED UNDER 40 CFR PART 136; AND FAILED TO ANALYZE WITHIN THE MAXIMUM HOLDING TIME REQUIRED UNDER 40 CFR PART 136. THE FACILITY CEASED DISCHARGING ITS WASTEWATER INTO THE DETROIT WATER & SEWERAGE DEPARTMENT SEWER SYSTEM, EFFECTIVE AUGUST 27, 1996.