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INTRODUCTION <br /> On July 15, 1999 one monitoring well was installed on Pep Boys property at 845 East Charter <br /> Way, Stockton, CA This well along with one vapor extraction well were requested and approved <br /> by the Environmental Health Division (EDH) of San Joaquin County The well was labeled BM-12 <br /> On July 16, 1999 a deep boring labeled B-3 was drilled and converted into a vapor extraction well <br /> SITE HISTORY <br /> On November 14, 1989 three tanks were removed at this site and three fiberglass tanks were <br /> installed The laboratory results taken at the time of removal tested positive for gasoline <br /> hydrocarbon contamination <br /> On December 19, 1989 an Electromagnetic Induction Survey was conducted on the site to aid the <br /> investigation of the areal extent of the contaminated sod and in planning the position of the <br /> monitoring wells <br /> In January 1990 three monitoring wells were installed They were reported in our report dated <br /> February 9, 1990 <br /> aIn March and April 1992, three more monitoring wells were installed They were necessary <br /> because the groundwater had fallen below the depth of the original wells This work was reported <br /> in our report dated April 30, 1992 <br /> In July 1993 we installed two additional monitoring wells and drilled one boring This work was <br /> reported in our report dated August 24, 1993 <br /> In September 1994, we installed three additional monitoring wells This work was reported in our <br /> report dated October 10, 1994 <br /> In February and March, 1996 five vapor extraction wells, one air spargmg well and one boring <br /> were installed at this site This work was reported in our report dated March 19, 1996 <br /> In April 1995 we drilled two CPT bonngs and they were reported in our report dated March 15, <br /> 1995 <br /> In April 1996 we drilled two additional CPT bonngs They were reported in our report dated June <br /> 10, 1996 <br /> I3 <br />