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a <br /> Q Y uarterl Re ort uarter 2002 <br /> . , P Q <br /> See6nd <br /> STRONG PROPERTY <br />' 5157'West-Business Loop 205; Tracy, California- <br /> 1.0.' <br /> alifornia1.0.' INTRODUCTION <br /> At-the request of Messrs. Robert and Mike Strong,Advanced GeoEnvironmentaI, Inc. (AGE) has <br />' prepared this quarterly report for the property.located at 5157 West Business Loop.205, Tracy, <br /> California. The scope of work included ground water monitoring and sampling of monitoring wells <br /> MW I through MW6 and preparation of this report. The site and the surrounding area are illustrated <br />' in•Figure 1. Structures and monitoring well locations are illustrated on Figures 2 and 3. <br />' Background information for the site is summarized in the AGE-prepared document titled'Additional <br /> Site Assessment Work Plan Addendum, dated 01 July 2000. Quarterly monitoring data from July <br /> 1998 to the present is summarized in Tables 1 and 2 of this report. <br /> 2.0. PROCEDURES <br /> On 26 June 2002,groundwater monitoring and sampling were performed on monitoring wells MW 1 <br /> through MW6: All field work procedures and reporting requirements are in accordance with <br /> guidelines issued by the Central Valley Regional Water Quality Control Board (CVRWQCB) for <br /> subsurface investigations of underground storage tank (UST) sites and guidelines issued by San <br /> Joaquin County Environmental Health Department(EHD)for sampling ofground water monitoring <br /> Iwells. <br />' 2.1. . WELL MONITORING AND EVACUATION ; <br /> A Solinst water level meter was used to measure the depth to ground water in the six monitoring, <br /> wells relative to the tops of the well casings. The ground water elevations and gradient were <br /> determined from these daia(Table 1). . <br /> Afterrecording water level measurements, new disposable plastic bailers were used to purge each <br /> monitoring well of standing water.-Between-six and nine gallons of water (a minimum of 3 <br /> casing-water volumes per well) were removed from each,well. Ground water temperature',pH and <br /> conductivity were-measured at regular intervals during purging using an Oakton water analyzer. <br /> Field sheets and data are included in Appendix A. Purged water-was stored` on-site in labeled, <br /> 55-gallon Department of.Transportation (DOT)-approved'drums. <br /> Advanced GeoEnvironmental,Inc. <br />