THE JOHN DEERE DUBUQUE WORKS ( JDDW ) IS LOCATED ABOUT TWO AND ONE-HALF MILES NORTH OF DUBUQUE, IOWA AT THE CONFLUENCE OF THE MISSISSIPPI AND LITTLE MAQUOKETA RIVERS. THE 1,447 ACRE FACILITY WHICH INCLUDES MORE THAN 5,000,000 SQUARE FEET OF FACTORY SPACE HAS BEEN USED FOR THE MANUFACTURE OF INDUS- TRIAL AND HEAVY EQUIPMENT SINCE 1946 UP TO THE PRESENT. THE COMPANY DISPOSED OF APPROXIMATELY 3,000 TONS OF SOLVENTS, PAINT SLUDGES, ACIDES, HEAVY METALS AND CYANIDE IN AN OLD ON-SITE LANDFILL UP TO ABOUT 1974. PART OF THE OLD LANDFILL IS NOW COVERED BY EXPANSIONS OF THE PLANT BUILDING. THE GROUNDWATER UNDER THE FACILITY IS CONTAMINATED WITH 1,1,1- TRICHLOROETHENE, TRICHLOROETHENE, BENZENE, NITRATE, CHROMIUM IRON AND MANGANESE. THE SITE SCORED 34.95 UNDER EPA'S HAZARD RANKING SYSTEM (A SCORE OF 28.5 IS SUFFICIENT TO PLACE A SITE ON THE NPL). ON 9/18/85, IT WAS PROPOED TO BE ADDED TO EPA'S NPL, WHICH WAS PUBLISHED IN THE FEDERAL REGISTER. IN THE 6/24/88 FEDERAL REGISTER, EPA ANNOUNCED ITS INTEN- TIONS TO TAKE THE JOHN DEERE DUBUQUE SITE OFF THE PROPOSED NPL LIST BECAUSE IT IS A TREATMENT, STORAGE, OR DISPOSAL FACILITY SUBJECT TO CORRECTIVE ACTION AUTHORITIES OF RCRA. REGION VII WILL CONTINUE TO HANDLE THE SITE AS A SUPERFUND LEAD AND WILL SEEK A CONSENT RD/RA UNDER SUPERFUND. ON 9/29/86, THE EPA REGION VII REGIONAL ADMINISTRATOR AND DEERE AND COMPANY ENTERED INTO A CON