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PUBLIe HEALTH SERVICES OPOUIp O <br /> SAN JOAQUIN COUNTY <br /> Q, m <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer <br /> 445 N. San Joaquin Street • P. O. Box 388 • Stockton, CA 95201-0388 '�%F6V ' <br /> 209/468-3420 COPYED ENDICH <br /> KEN ENDICH <br /> TOP FILLING STATION <br /> 101 S WILSON WAY <br /> STOCKTON CA 95205 <br /> 2 11995 <br /> RE: TOP FILLING STATION SITE CODE: 1294 <br /> 101 S WILSON WAY <br /> STOCKTON CA <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD) has completed the review of the "Preliminary Investigation and Evaluation <br /> Report" dated April 10, 1995, submitted by Geological Audit Services, and has the <br /> following comments for your consideration. <br /> The full extent of the soil and groundwater contaminant plumes have not been <br /> identified during the first phase of field work at the site. Therefore, the report <br /> recommends the installation of additional soil borings to further investigate the lateral <br /> extent of the soil plume and two monitoring wells to further characterize the lateral <br /> extent of the groundwater plume. <br /> The report does not state locations for the recommended soil borings. However, all <br /> areas not yet characterized must be included in the next phase of field work. <br /> The areas recommended for the installation of the additional groundwater monitoring <br /> points appear to be adequate but a monitoring point is also needed to the south of <br /> monitoring well MW#2. This well should also be installed during this next phase of <br /> field work. <br /> As the characterization of the contaminant plumes should be complete after the <br /> conclusion of the next phase of field work, feasibility studies must be conducted <br /> concurrently with this site work so as to proceed to remediation in a timely manner. <br /> Therefore, any test wells to be used for these feasibility tests should be installed <br /> during this next phase of field work as well. <br /> Please submit a very brief workplan detailing the locations and construction <br /> A Division of San Joaquin County Health Care Services <br />