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DEPARTMENT OF THE NAVY <br /> NAVAL COMMUNICATION STATION <br /> STOCKTON <br /> STOCKTON.CALIFORNIA 95203-5000 IN REPLY REFER TO <br /> 6280 <br /> or '61 0863 <br /> 1986 <br /> United States Environmental Protection Ag $�Ycy <br /> Region IX ( 1 <br /> Attn: Mr. Harry Seraydarian MAR <br /> 986 <br /> 215 Fremont Street <br /> ALTH <br /> San Francisco, CA 94105 g�t(�t�: L F <br /> Dear Mr. Seraydarian: <br /> Prior to the closure of an abandoned sump in Building 816B, which still <br /> contains oil, samples were drawn for laboratory analysis. Samples were <br /> also drawn from one (1 ) of two (2) train work pits. The test results <br /> indicate that the sump contains 1,610 ppm PCB (Aroclor 1254) and the <br /> train pit contains 36 ppm PCB (Aroclor 1260). <br /> In an attempt to discover the possible source of this contamination, it <br /> was determined that Building 8160 was once occupied by Defense Industrial <br /> Plant Equipment, whose mission was to overhaul and store large pieces of <br /> industrial equipment. Within the last few years it has been determined <br /> that some of this industrial equipment contained PCB's. <br /> During our initial investigation, an employee stated that an old practice <br /> was to open a drain line from the sump to drain it into a nearby ditch. <br /> Further testing will be required to determine if the ditch has been con— <br /> taminated. <br /> Naval Communication Station Stockton is presently preparing a Navy <br /> Pollution Control Report which will request funding to further test and <br /> decontaminate these areas. <br /> Any questions concerning this matter may be directed to P9r. Dennis <br /> Fields at (209) 944-0244. <br /> Sincerely, <br /> L. A. MICHLIN <br /> Lieutenant Commander, CEC, U. S. Navy <br /> Public Works Officer <br /> By direction of the Commanding; Officer <br /> Blind copy to: <br /> Department of Health Services <br /> Water Quality Control Board <br /> 'Local County Health District <br /> Naval Telecommunications Command, Washington DC <br /> Naval Facilities Engineering Command, San Bruno, CA <br /> 3SN3dX3 I N-y✓4NH3A ) 1v o3')nnnHri-iH <br />