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PUBLIC IEALTH SERVICES P4�lN <br /> SAN JOAQUIN COUNTY ?: i <br /> ENVIRONMENTAL HEALTH DIVISION y :< <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer • . <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 9 D ° ';FaR��P <br /> 2091468-3420 <br /> AUG 0 8 1996 <br /> FRANK YONESHIGE <br /> VAN DEN BERGH FOODS INC <br /> P O BOX 9200 <br /> STOCKTON CA 95208 <br /> RE: Ragu Foods SITE CODE: 22073 <br /> 1400 Waterloo Road <br /> Stockton CA 95205 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHSIEHD) has <br /> completed review of IT Corporation's "Groundwater Treatment Plan" dated July 1996 and the <br /> "Groundwater Monitoring Report Second Quarter 1996" dated July 1996. PHSIEHD has prepared <br /> the following comments for your consideration. <br /> PHSIEHD requested in correspondence dated February 6, 1996 and March 27, 1996 that a <br /> corrective action plan be prepared to evaluate the threat to groundwater which the residual soil <br /> contamination poses and to evaluate remedial alternatives for soil and/or groundwater <br /> contamination should remediation be deemed necessary. <br /> As you are aware the most recent groundwater monitoring results did not indicate groundwater <br /> contamination, but sample dilution may be occurring since groundwater has risen above the <br /> screened interval of the monitoring wells, MW4 - MW6. <br /> Until the mass loading to groundwater can be determined, through evaluation of the environmental <br /> fate analysis, PHSIEHD will not direct you to initiate any interim groundwater remediation. The <br /> groundwater treatment plan which has been submitted was sufficient to demonstrate that <br /> implementation will not have a detrimental effect on the environment; therefore, you may implement <br /> the plan to use ORC socks (magnesium dioxide), if you wish. <br /> PHSIEHD has also reviewed preliminary information regarding, VLEACH, the environmental fate <br /> model which IT has proposed for use. Please submit a list of parameters which will be used so that <br /> PHSIEHD can be further assured of the ability of the model to predict the potential for the residual <br /> soil contamination to further degrade groundwater quality beneath the site. <br /> If you have any questions, please contact me at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> �N',a �gorio, <br /> Mary Meays, Senior REHS MargaretREHS <br /> Site Mitigation Unit Lead Senior <br /> MM11400WATE <br /> cc: Elizabeth Thayer, CVRWQCB cc: Linus Farias, IT Corporation <br /> A Division of San Joaquin County Health Care Services <br />