Laserfiche WebLink
John Weber <br /> Page 2 <br /> In order to evaluate the effectiveness of the vapor extraction system, soil sampling occurred <br /> in September 1992. The results of the analysis of soil borings, CB1 - CB9 indicated that soil <br /> contaminants are still present, at levels which may continue to act as a source of <br /> contamination to groundwater. Additional soil remediation and further confirmation soil <br /> sampling will be necessary. <br /> Please plan by June 30, 1993 to either resume vapor extraction or submit an addendum to <br /> the Soil and Groundwater Remediation Plans proposing an alternate method of soil <br /> remediation. <br /> Groundwater extraction and discharge to the City of Stockton sanitary sewer began on <br /> March 2, 1993. During the operating period through April 27, 1993, 643,729 gallons of <br /> groundwater were extracted and discharged. In future quarterly reports, please graph <br /> analytical results from monitoring well samples and discharge water samples,. in order to <br /> correlate the affect groundwater extraction may have on groundwater contamination levels. <br /> If you have any questions, comments or wish to schedule a site inspection, please contact <br /> Mary Meays, Senior REHS, of my staff at (209) 468-0337: <br /> Jogi Khanna, .D., M.P.H. <br /> HeaIth Of ' er <br /> Y aurie A. Cotu a, REHS, Program Manager <br /> ! Environmental Health Division <br /> LAC/MM:lb <br /> y c: Elizabeth Thayer, CVRWQCB <br /> c: Dan Kirk, Shell Oil <br /> c: Jeanne Zolezzi, Neumiller and Beardslee <br /> c: Paul Graff, Aegis Environmental <br /> i <br /> i4 <br />