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• <br /> Mr. Robert 0. Godwin - - 19 June 1987 <br /> 2. Drywells 801, 827B, 835, 8366, 850, and 8516 have been closed but we need <br /> wastewater characterization, well construction details, results of any soil <br /> samples taken, and detailed closure procedures for each of these wells to <br /> determine if they pose a threat to water quality. <br /> 3. Closed GSA drywell 874-N and active drywell 810 require wastewater <br /> characterizations. <br /> By 17 July 1987, please submit work plans and time schedules for the work <br /> described above. <br /> By telephone on 15 May 1987, Ms. Judy Steenhoven of your staff informed Ms. <br /> Wendy Cohen of my staff about a newly-discovered contamination problem at Site <br /> 300 at Building 815. Trichloroethylene (TCE) apparently was used at this <br /> building periodically to clean the boiler and leaked or spilled from drums. Ms. <br /> Steenhoven said TCE has been found in soil and in the regional ground water <br /> aquifer at 100 feet deep (the shallow perched zone was not tested). By 17 July <br /> 1987, please submit all data from soil borings and well installation at this <br /> site ( including boring and well logs.) and a work -plan and time schedule to <br /> determine the extent of soil and ground water contamination. Please also <br /> provide information on the source of contamination, whether or not TCE is still <br /> used, and what precautions have been taken to prevent spills or leaks in the <br /> future. <br /> If you have any questions, please call Ms. Cohen at (916) 361-5676. <br /> KENNETH D. LANDAU <br /> Senior Engineer <br /> WLC/mm <br /> Enclosure <br /> cc: Mr. James T. Davis, U.S. Department of Energy, Oakland <br /> Mr. Anand Rege, Department of Health Services, Toxic Substances Control <br /> aaDivision, Berkeley <br /> n Joaquin Local Health District, Stockton <br /> Mr. Eugene Draney, Lawrence Livermore National Laboratory, Livermore <br /> Mr. Richard Ragaini , Lawrence Livermore National Laboratory, Livermore <br />