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s <br /> Rancho Las Positas School located at 401 Las Positas, Livermore, <br /> CA. Any person may provide written or verbal statements and data <br /> pertaining to the permit decision at the public hearing. <br /> Description of Hazardous Waste Activity at the Facility <br /> Lawrence Livermore National Laboratory (LLNL) - Site 300 is owned <br /> by the Federal Government and operated by the University of <br /> California. Its primary function is to serve as a high explosive <br /> (HE) and materials testing site. This operation is in support of <br /> nuclear weapons development overseen by the U.S. Department of <br /> Energy. <br /> The site covers an area of 11 square miles. The active <br /> landfills, Pits 1 and 7, are located in the northwest corner of <br /> the facility. These landfills are currently operated under <br />- federal interim status pursuant to RCRA 3005 (e) . <br /> Hazardous wastes generated by detonation of test assemblies <br /> constitute the principal source of the low-level radioactive or <br /> chemical waste at the site. Some of these assemblies contain <br /> small quantities of uranium, beryllium and thorium. <br /> n <br /> disposed as solids in the Landfiiis. The total capacities of <br /> Pits 1 and 7 are 58,964 and 311, 111 cubic yards, respectively. <br /> Firing table debris totals 1, 000 cubic yards of waste per year. <br /> Other hazardous waste activities at LLNL-Site 300 are drum <br /> storage and thermal treatment. Waste received at the drum <br /> storage area consists of solvents, organic liquid mixtures, <br /> aqueous organic solutions, machine coolant, acids, caustic <br /> inorganic salt solutions, corrosive inorganic and organic <br /> liquids, oxidizing solutions, corrosive solids and sludges and <br /> mercury wastes. Activities at the thermal treatment area include <br /> controlled detonation of waste HE material, and burning of waste <br /> material which has come into contact with HE material. <br /> LLNL operates the drum storage area and the thermal treatment <br /> area at Site 300 under federal interim status, and is seeking a <br /> final permit for these activities. This proposal to deny a <br /> permit for the two landfills at Site 300 will not affect the <br /> status of the drum storage area and the thermal treatment area at <br /> Site 300. EPA's decisions on L's permit application for the <br /> drum storage area and the thermal treatment area will be made at <br /> aylater date. <br /> If the decision to deny this permit becomes-final, interim status : <br /> will terminate pursuant to 40 CFR 270.73, and the facility must <br /> cease placing wastes in the landfills at Site 300. EPA also will <br />