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•......, rte-- �'�/ <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY U, 60,i�JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Box 2009 • (1601 East Hazelton Avenue) • Stockton,California 95201 <br /> (209)466-3400 <br /> (Lcoo [PY <br /> MR JOHN URRUTIA <br /> VICE PRESIDENT/SPECIAL LOAN DEPT <br /> BANK OF STOCKTON <br /> P O BOX 1110 QT Q 2 199% <br /> STOCKTON CA 95201 <br /> RE: Western Lift SITE CODE: 1087 <br /> 3430 S. E1 Dorado St. <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EHD) has completed the 'review of the "Monitoring <br /> Well Installation Report" prepared by your consultant Geological <br /> Audit Services, Inc. for the above referenced site and has the <br /> following comments. <br /> Soil and groundwater sample results - from monitoring well #1 <br /> (MW-1) were positive for petroleum hydrocarbons contamination. <br /> Although MW-1 has identified a problem, the groundwater <br /> contamination plume for this site has not. been adequately <br /> defined. <br /> The full extent of contamination must be physically characterized <br /> in order to design a proper remediation plan. This further <br /> definition should be accomplished by installing and sampling <br /> additional monitoring wells. Placement of these monitoring wells <br /> should be based on gradient determinations. In addition, MW-1 . <br /> should be resampled to ,confirm the results from the June 4, 1992 <br /> sampling event. <br /> Should you need additional .information or clarification, contact <br /> Harlin Knoll, Senior REHS, of my staff at (209) 468-3442 . <br /> Jogi Kha a, M.D. , .P.H. <br /> Health (icer <br /> a(irie A Co ulla, REHS, Program Manager <br /> nvironmental Health Division <br /> LAC/HK: lb <br /> c: Geological Audit Service, Inc. <br /> 1803 W. March Lane, Ste A <br /> Stockton, CA 95207 <br /> A Division of San Joaquin County Health Care Semices l <br />