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* PUBLIC PTEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> r. <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor a P. O. Box 388 • Stockton, CA 95201-0388 <br /> 2091468-3420 <br /> J <br /> BRUCE BURLINGTON C (0 <br /> SAN JOAQUIN SULFUR COMPANY MLED APR 2 41999 <br /> P O BOX 700 <br /> LODI CA 95241 <br /> RE: SAN JOAQUIN SULFUR COMPANY SITE CODE: B#B <br /> 711 N SACRAMENTO ST <br /> LODI CA 95240 <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS-EHD) has completed the review of the "Phase I Site Investigation", <br /> submitted by Foothill Engineering on April 12, 1996, and offers the following <br /> comments for your consideration. <br /> The proposal for three monitoring wells at this site may be premature at this time. <br /> Instead, a single soil boring installed in the former tank pit would provide <br /> essential soil data that will be used to determine the need for additional <br /> assessment and cleanup at the site. Should sufficient soil contamination be <br /> observed during the installation of this boring, a single monitoring well can be <br /> installed in the downgradient direction during the same mobilization. This well <br /> should be placed approximately ten feet away from the former tank pit in the <br /> south west direction, the direction of groundwater flow documented at other sites <br /> in the area. The placement of the well in this location would provide additional <br /> soil data for lateral assessment and a strategic groundwater data point to aid in <br /> the evaluation of additional assessment and cleanup needs. <br /> In addition to the proposed chemical testing, the analysis of selected soil <br /> samples for physical parameters such as organic carbon content, porosity, and <br /> bulk density should be included, if site conditions warrant (if the contamination is <br /> found to extend beyond the former tank pit area). This information would be <br /> used to evaluate the potential fate and transport of the contamination over time. <br /> A Division of San Joaquin County Health Care Services <br />