THE MCKIN SITE LIES IN GRAY, MAINE, APPROXIMATELY FIFTEEN MILES NORTH OF PORTLAND, MAINE AND THE ATLANTIC OCEAN. THE SITE IS APPROXIMATELY 7 ACRES IN SIZE, WITH APPROXIMATELY 4.5 ACRES OF CLEARED AND PARTIALLY EXCAVATED LAND AT THE TIME OF THE RECORD OF DECISION. THE MCKIN FACILITY IS LO- CATED IN AN AREA OF ABANDONED SAND AND GRAVEL EXCAVATION. THE MCKIN COMPANY OPERATED A TANK CLEANING AND WASTE REMOVAL BUSINESS USING THE SITE FOR COLLECTION, STORAGE, DISPOSAL, AND TRANSFER OF PETROLEUM WASTES AND INDUSTRIAL CHEMICAL WASTES. WASTE HANDLING FACILITIES AT THE SITE USED DURING MCKIN COMPANY OPERATIONS INCLUDED 22 ABOVE-GROUND STORAGE TANKS, AN ASPHALT-LINED LAGOON, AND AN INCINERATOR. THE MCKIN COMPANY AND OTHER TRUCKED LIQUID WASTES TO THE SITE. THE WASTE HANDLING PROCEDURES AT THE SITE INCLUDED DISCHARGE TO THE GROUND, STORAGE IN TANKS OR THE LAGOON, TRANSPORT OFF-SITE BY TRUCK, INCINERATION, AND ON-SITE BURIAL. THE MCKIN FACILITY RECEIVED APPROXIMATELY 100,000 TO 200,000 GALLONS OF WASTE ANNUALLY BETWEEN 1972 AND 1977.