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71 <br /> 1 ' <br /> ' � � - r 00 ti <br /> Ground Water Monitoring Report Second Quarte 20 <br /> VAN BUSKIRK GOLF COURSE FACILITY <br /> 1710 Houston Avenue, Stockton, California <br /> ' 1.0. INTRODUCTION <br /> At the request of Mr.John Fukumoto, agent for the City of Stockton,Advanced GeoEnvironmental, <br /> ' Inc'(AGE) has prepared this'report for ground water monitoring activities conducted at the Van <br /> Buskirk.Golf Course maintenance facility (site) located at-1740 Houston Avenue, Stockton, <br /> California (Figure 1). This report.presents the results of ground water monitoring activities <br /> conducted during April 2000. The April 2000 monitoring activities represents the first round of . <br /> ground water.monitoring conducted under the ground water monitoring program recommended in ; <br /> the AGE-prepared'Additional Soil and Ground Water Assessment Report, dated 30 June 1999. . <br /> Thepurposeof the ground water monitoring activities is to monitor site ground water for seasonal ; <br /> variations in elevation, gradient and flow direction, and to assess the impact of petroleum <br /> hydrocarbons and fuel oxygenating compounds on ground water beneath the site. Site background <br /> information was summarized in,the AGE-prepared Additional Soil and Ground Water Assessment <br /> ' Report,dated 30 June 1999. This report was prepared in accordance with San Joaquin County,Public <br /> Health Services.- Environmental Health Division (PHS-EHD) and Central Valley Regional Water <br /> ' • Quality Control Board. (CVRWQCB) guidelines for the investigation of underground storage tank , <br /> (UST) sites. <br />. ' 2.0. j" PROCEDURES <br /> The work was' performed in accordance with San Joaquin County Public Health Services - <br /> : Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board guidelines'for investigation of underground storage.tank (UST) sites. <br /> .2..l. MONITORING WELL PURGE PROCEDURES <br /> ' On 13 a,April 2000groundwater monitoring event was conducted at'the site. The ground water <br /> p l� <br /> monitoring-activities included the measurement of ground water levels and collection of ground <br /> ' water samples from-site monitoring wells MW-3 through MW-5. A solinst water level meter was <br /> used to,measure the depth to groundwater in each well relative to the tops of the well casings. After <br /> ground water depth measurements were collected, each monitoring well was purged using a two- <br /> stage submersible pump.' Approximately 6 to 10 gallons of water were evacuated from,each <br /> monitoring well (a minimum three well casing volumes), as appropriate for each well. <br /> ' Temperature,pH and conductivity were measured at 2--gallon intervals,as appropriate,using a Hydac <br /> • ' water analyzer to monitor stabilization of these ground water parameters. Field data logsare included <br /> ' in Appendix A: Purged water was temporarily stored on-site in 55-gallon drums. . <br /> Advanced GeoEnvirorimental,Inc, <br />