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�.ca'�'.,�, "� e " 1k ^'r :zr-tui. <br /> cr fi <br /> Mr. Kyle Christie <br /> July lb, 1990 <br /> Page 8 <br /> f <br /> The presence of low levcis of BETX components identified in off-site monitoring wells W-4, <br /> W-5, W-6, and W-7 indicate that contaminants have migrated off site. However, the <br /> concentrations found in these wells need to be verified by future sampling before conclusions can <br /> be drawn regarding the extent and degree of plume migration. <br /> Should you have any questions regarding this report, please contact me or Ms. Janice Hubbard <br /> at (915) 444-0123. <br /> Very truly yours, <br /> BROWN AND CALDWELL <br /> Jay Lucas <br /> Project Manager <br /> JL:JH:mkw <br /> cc: Mr.Greg Lyons, San Joaquin County Local Health District <br /> r' Mr.Thomas Peltier, California Regional Water Quality Control Board, <br /> Central Valley Region <br /> Mr.Jack Ronsko, City of UI <br /> Mr. Chris Winsor, ARCO Products Company <br /> y <br /> s <br /> l <br /> t <br /> 3 Hmwn and Caldwell <br /> j Consultants <br /> •fid". _ <br />