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Quarterly Report - Third Quarter 2005 <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 /> tInc (AGE) has prepared this report of environmental activities conducted at 2850 Loomis Road, <br /> Stockton,California(site) The scope of work included the monitoring and sampling of five ground <br /> water monitoring wells, analysis of the ground water samples, and preparation of this report The <br />' location of the site and surrounding area are illustrated on Figure 1 On-site structures and the <br /> locations of monitoring wells are illustrated on Figure 2 <br />' Site background information can be found in the AGE-prepared Preliminary Investigation and <br /> Evaluation Report, dated 12 October 1999, and Additional Site Assessment Report, dated 09 April <br />' 2002 <br /> 1 2.0. PROCEDURES <br /> Field procedures were performed in accordance with Central Valley Regional Water Quality Control <br /> • Board (CVRWQCB) guidelines for the investigation of underground storage tank (UST) sites and <br /> San Joaquin County Environmental Health Department(EHD)guidelines for the sampling of ground <br /> water monitoring wells The procedures were performed in accordance with the AGE-prepared and <br /> EHD-approved Monitoring Well Installation Work Plan, dated 09 June 2000 <br /> 2 1 WELL MONITORING AND PURGING <br /> On 15 September 2005, the depth to ground water in monitoring wells MW-1 through MW-5 was <br />' measured from the top of each well casing to the nearest 0 01-foot utilizing a Sohnst water level <br /> meter The ground water elevation in each well was calculated by subtracting the measured depth <br /> to ground water from the surveyed casing elevation (Table 1) <br />' After water Ievels were measured 4 5 to 5allon <br /> g sof water (a minimum of three casing water <br /> volumes per well)were purged from all the wells using a Waterra Hydro-Lift II pump equipped with <br /> a mechanical arm utilized to surge each well with dedicated tubing Ground water temperature,pH, <br /> and 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 properly <br /> labeled, Department of Transportation(DOT)-approved 55-gallon drums pending proper disposal M - <br /> r <br /> Advanced GeoEnvironmental,Inc <br />