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Quarter yRepor - Second Quarter 2002 <br /> SHOCKEY AND SONS TRUCKING <br /> 850 Milgeo Avenue, Ripon, California <br /> 1.0. INTRODUCTION <br />' At the request of Mr. Lee Shockey> Advanced GeoEnvironmental Inc. (AGE) has prepared this <br /> quarterly report for 850 Milgeo Avenue, Ripon, California(the site). The scope of work included the <br />' monitoring of four ground water monitoring wells. The location of the site and its surroundings are <br /> depicted in Figure 1. Monitoring wells, probe boring locations and structures on the site are shown <br /> in Figure 2. <br /> This report has been prepared in accordance with the Central Valley Regional Water Quality Control <br />' Board(CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites. Site <br /> history and findings from previous investigations and previous monitoring events at the site are <br /> -summarized in Preliminary Investigation and Evaluation Report dated 15 August 1996, prepared <br />' by AGE. Quarterly monitoring data from April 1996 to the present is summarized in Tables 1 and 2 <br /> of this report. <br />'. 2.0. PROCEDURES <br /> Field work was performed in accordance with the AGE-prepared Work Plan Addendum, dated 09 <br /> February 1996. Field work was performed in accordance with guidelines developed by Central Valley <br /> Regional Water Quality Control Board(CVRWQCB) for the investigation of underground storage ' <br />' tank (UST) sites.and conform to ground water monitoring guidelines issued by the San Joaquin <br /> County Environmental Health Department (EHD). <br />' 2.1. WELL MONITORING AND EVACUATION <br /> V CUATION . <br />' On 21 June 2002, the water level in each monitoring well was measured relative to the tops of the <br /> well casings using a Solinst water level meter. The depths to ground water and relative ground water <br /> elevations are given in Table 1. r <br />' After depth to ground water gauging, a dedicated, disposable bailer was used to purge each <br /> monitoring well. Between 4 and 7 gallons were removed from each well (minimum of three casing- <br /> volumes-per-well):-The groundwater parameters oftemperature pH-and-conductivity were measured��- _ <br /> at regular intervals, using an Oakton water analyzer. The ground water parameters generally <br />' stabilized during purging(Appendix A).Purged water was stored on-site in 55-gallon Department of <br /> Transportation (DOT)-approved drums. <br />' ,advanced GeoEnvironmcntal,Inc. <br />