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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY , <br /> ENVIRONMENTAL HEALTH DMSION <br /> Karen Furst, M.D., M.P.H., Health Officer .. P <br /> 304 East Weber Avenue, Third Floor• Stockton, CA 95202 <br /> 209/468-3420 FILE C <br /> JOHN & MARGARET MARCI <br /> MARCIS DIESEL SERVICE AUG 3 11998 <br /> 2973 LOOMIS ROAD <br /> STOCKTON CA 95205 <br /> RE: 2969 Loomis Road SITE CODE: 2015 <br /> Stockton, CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has reviewed the "First Quarter 1998 Groundwater Monitoring <br /> Report" dated April 28, 1998, and the "Second Quarter 1998 Groundwater <br /> Monitoring Report" dated August 17, 1998, prepared by William J. Hunter & <br /> Associates for the above referenced site. <br /> The quality assurance/quality control (QA/QC) laboratory data sheets for the <br /> dates the samples were analyzed were not included in the report. In addition the <br /> QA/QC data sheets for the samples collected December 2, 1997 still have not <br /> been submitted. Please submit these data sheets immediately. <br /> The arrow indicating the direction of the groundwater gradient on Plate II for July <br /> 1, 1998 points to the northwest although the text of the report and the elevations <br /> indicate the flow was to the northeast. Please correct this plate in the next <br /> report. <br /> Water is above the screened interval of monitoring well (MW) one and at the top <br /> of the screened interval of MW4. Although the gradient is divergent it has been <br /> to the southwest more often than any other direction. The soil and groundwater <br /> sample results from MW 4 indicate higher contamination in that direction from <br /> soil boring 1-131 then in the direction of MW1. <br /> The information gathered to date at this site was discussed at the PHS/EHD Site <br /> Mitigation Unit meeting on August 26, 1998, it was decided that further site <br /> investigation should be conducted to the southwest and northwest of MW4 to <br /> define the extent of the contamination in those directions. A work plan for <br /> installation of additional soil borings/monitoring wells should be submitted to <br /> PHS/EHD by November 1, 1998. <br /> A Division of San Joaquin County Health Care Services <br />