The complaint alleges that Hercules violated its NPDES permit when it discharged dry weather flow containing ether, ethanol and chloroethane into the waters of the United States. Hercules NPDES permit requires that dry weathe rflow be diverted from the outfall collection basin into pretreatment, and subsequently into the Hopewell publicly owned treatment works (POTW). The Complaint also alleges that Hercules violated the pretreatment standard regulations and its industrial user permit when Hercules discharge with high BOD levels caused interference at the Hopewell P