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Y <br />' Quarterly Report - Second Quarter 2001 <br /> CHARLIE'S DAY AND NITE <br /> 706 North El Dorado Street, Stockton, California <br /> 1.0. INTRODUCTION <br /> At the request of Mr Charles Skobrak of Charlie's Day and Nite,Advanced GeoEnvironmental,Inc <br />' (AGE) has prepared this quarterly report for the property located at 706 North El Dorado Street, <br /> Stockton, California Quarterly ground water monitoring was conducted on 14 May 2001 The site <br /> location and the surrounding area are illustrated in Figure 1 Structures and Improvements as well <br />' as boring and monitoring well locations are illustrated on Figure 2 Background information is <br /> summarized in the AGE-prepared Preliminary Investigation and Evaluation Report-March 1999, <br />' dated 26 March 1999 <br />' 2 0. PROCEDURES <br /> Field work was performed in accordance with guidelines established by the California Regional <br />' Water Quality Control Board-Central Valley Division for investigation of underground storage tank <br /> (UST)sites Ground water monitoring procedures were performed as outlined in the AGE-prepared <br /> Monitoring Well Installation WorkPlan dated 29 July 1999,and approved by the PHS-EHD by letter <br /> • dated 03 August 1999 <br /> 2 1 , MONITORING WELL PURGE PROCEDURES <br /> On 14 May 2001, a Solinst water level meter was used to measure the depth to ground water in the <br />' three wells (MWI, MW2 and MW3) relative to the tops of the well casings The relative ground <br /> water elevations and gradient were determined from these data(Table 1) <br />' After the depth-to-ground water measurements were collected,the monitoring wells were purged of <br /> standing water using a polyvinyl chloride (PVC) bailer Approximately 7 gallons of water, a <br /> minimum of 3 casing-water volumes were removed from the monitoring wells Ground water <br />' temperature,pH and conductivity were measured at approximately 1-gallon intervals during purging <br /> using a Oakton water analyzer Field sheets and data are included in Appendix A Purged water was <br /> stored'on site in labeled, 55-gallon DOT-approved drums <br /> 1 <br /> 22 COLLECTION OF GROUND WATER SAMPLES <br /> Water samples were collected from each purged well using new disposable plastic bailers Each <br /> water sample was transferred into three 40-m1 VOA vials containing 0 5 ml 18%hydrochloric acid <br /> as a sample preservative After collection, the samples were properly labeled, placed in a chilled <br /> i <br /> Advanced GeoEnv►ronmentai,Inc <br />