CHEMCENTRAL IS A MI. CORP THAT CONDUCTS A CHEM DISTRIBUTION OPERATION AT ITS ROMULUS, MI. SITE. ACCORDING TO COMPLAINT, HANDLING, STORAGE & DISPOSAL OF SOLID & HAZD WASTES AT THE FACILITY HAS CONTAMINATED SOIL, SURFACE WATER & GRNDWATER. CHEMCENTRAL IS LOCATED IN A PARTIALLY DEVELOPED IND. AREA. IT IS ENCLOSED BY A FENCE & IS BORDERED ON THE N BY ZINK DRAIN. A SMALL WATERCOURSE SEVERAL FT WIDE. ZINC DRAIN IS FED BY A WATERSHED AREA ABOVE CHEMCENTRAL & BY GRNDWATER FROM THE SHALLOW AQUIFER UNDER THE SITE. THE DRAIN ENTERS MARSH CREEK, A TRIB OF THE DETROIT RIVER, WHICH IS ITSELF A TRIB OF LAKE ERIE. THE CHEMCENTRAL FACILITY INCLUDES AN OPEN LOADING DOCK FOR TANKER & TRAILER TRUCKS; PIPES & HOSES FOR CHEMICAL TRANSFER TO STORAGE, TANKS; A WAREHOUSE; A DRUM STORAGE AREA; & A DRUM WASHING STATION. THE MAJORITY OF THE LIQUID STORAGE CAPACITY IS UNDERGROUND. WASTES, PRINCIPALLY ORGANIC SOLVENTS, ARE TRANSFERRED VIA HOSES & PIPES FROM TRUCKS INTO STORAGE DRUMS & TANKS. DURING THIS PROCEDURE, SOLVENTS HAVE LEAKED & SPILLED ONTO THE GROUND, & IT IS ALLEGED THAT IN SOME INSTANCES DRIVERS & EMPLOYEES OF CHEMCENTRAL HAVE DISCHARGED LIQUIDS LEFT IN PIPES & HOSES DIRECTLY ONTO THE GROUND. CONTAMINANTS HAVE ENTERED & HAVE BEEN OBSERVED IN THE GROUND NEAR AN UNDERGROUND STORAGE TANK IN THE NE PORTION OF THE SITE. GROUN