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QUARTERLY MONITORING REPORT <br /> THIRD QUARTER 1993 <br /> MAJOR MART PROJECT <br /> 1.0 INTRODUCTION <br /> This report summarizes the results of quarterly groundwater monitoring and the status of <br /> remedial activities for the Mayor Mart site located at 1235 East Alpine Avenue in Stockton, <br /> California (Figure 1 and Figure 2) The report is organized to address the reporting <br /> requirements discussed in the San Joaquin County Environmental Health Division (EHD) letter <br /> dated November 12, 1991 to American Real Estate Group (AREG) To respond to EHD's <br /> requirements, this report is presented in two segments The first segment reports on the results <br /> of the third quarter 1993 groundwater monitoring program, while the second segment discusses <br /> the status of the overall remedial program Where protect historical data is of importance to the <br /> current status of the project, it is referenced Should users of this report be interested in the <br /> overall history of the project, reference should be made to the WESTON Third Quarter 1992 <br />' Report dated November 13, 1992 which contained a historical summary of work completed up <br /> to that time <br /> 2.0 GROUNDWATER MONITORING PROGRAM <br /> This section presents a summary of the field activities and analytical results of the third quarter <br /> 1993 monitoring event along with a historical compilation of analytical data from prior <br /> monitoring events The field work was completed on August 10 and 11, 1993 <br /> 2.1 Field Activity Summary <br /> The groundwater monitoring program consists of two aspects 1) field measurement of <br /> groundwater elevation, temperature, pH and electncal conductivity, and 2) collection of <br /> groundwater samples for laboratory analysis All six groundwater monitoring wells at the site <br /> were inspected for the presence of floating product and measured for groundwater levels <br /> 1 Samples were collected using the procedures detailed in the Field Report presented in <br /> Appendix A All samples were submitted to WESTON's Stockton, California analytical <br /> laboratory for analysis of total petroleum hydrocarbons as gasoline (TPH-G) by EPA Method <br /> 1 8015-M and BTEX (benzene, toluene, ethylbenzene and xylene) by EPA Method 8020, total lead <br /> by EPA Method 7421 and the presence of fecal coliform bacteria The current monitoring <br /> schedule requires total lead and coliform analyses only in the third quarter of each year <br /> 1 <br /> 1 011LZl9a <br /> 917k\RPTS\AREO3QT1t WP <br />