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1 <br /> ' Quarterly Report - Second Quarter 2004 <br /> NATIONAL FREIGHT <br /> ' 2850 Loomis Road, Stockton, California <br /> ' 1.0. INTRODUCTION <br /> At the request of Mr Daniel Folcher of Vineland Construction Co ,Advanced GeoEnvironmental, <br /> Inc (AGE) has prepared this report of environmental activities conducted at 2$50 Loomis Road <br /> (site), Stockton, Californ and o e scope of work included monitoring and sampling of five ground <br /> water monitoring wells onsite, analysis of the ground water samples and preparation of this report <br /> The location of the site and its surroundings are illustrated on Figure 1 On-site features, including <br /> the locations of the monitoring wells, are illustrated on Figure 2 <br /> ' This investigation was performed in accordance with the guidelines of the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) for investigation of underground storage tank (UST) <br /> sites and the San Joaquin County Environmental Health Department(EHD)for sampling of ground <br /> ' water monitoring wells Site background information can be found in the AGE-prepared Preliminary <br /> Investigation and Evaluation Report,dated 12 October 1999 and Additional Site Assessment Report, <br /> dated 09 April 2002 <br /> r <br /> ' 2.0. PROCEDURES <br /> Ground water monitoring and sampling was conducted on 20 May 2004 The procedures were <br /> t performed in accordance with the AGE-prepared and EHD-approved Monitoring Well Installation <br /> Work Plan, dated 09 June 2000 <br /> 2 1 WELL MONITORING AND PURGING <br />' A Solinst water level meter was used to measure the depth to ground water from the well casing tops <br /> in wells MW-1 through MW-5 to the nearest 0 01 foot The depths to ground water are summarized <br />' in Table 1 <br /> After water levels were gauged, a dedicated, disposable plastic bailer was used to evacuate(purge) <br />' each monitoring well a minimum of three casing-water volumes (approximately 4 to 6 gallons) of <br /> water Temperature,pH,and conductivity were measured at regular intervals using an Oakton water <br /> analyzer The field data sheets are included in Appendix A Purged water was stored on site in <br />' 55-gallon drums <br /> 1 <br /> • <br />' Advanced CeoEnvlronmental <br />