12/24/91: DISCHARGING EFFLUENTS IN AMOUNTS OR CON- CENTRATIONS IN EXCESS OF THE PERMIT EFFLUENT LIMITATIONS. DISCHARGING SOLIDS IN OTHER THAN TRACE AMOUNTS ON SEP. 24-26 AND 28, 1989. FAILING TO OPERATE THE TREATMENT FACILITIES IN A MANNER WHICH WOULD MINIMIZE UPSETS AND DISCHARGES OF EXCESSIVE POLLUTANTS.