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. QUARTERLY REPORT <br /> November 1996 <br /> Nomellini Construction Company <br /> 1045 West Charter Way <br /> Stockton, California <br /> 1.0 INTRODUCTION <br /> In accordance with the request of Mr Dante John NomelImi of Nomellini Construction Company, <br /> Advanced GeoEnvironmental, Inc (AGE)has performed quarterly ground water monitoring activities <br /> at 1045 West Charter Way, Stockton, California (site) <br /> This report details the monitoring and sampling procedures performed on 25 November 1996 and <br /> presents the results of the laboratory analysis The objective of the sampling is to monitor <br /> concentrations of petroleum hydrocarbons in ground water at the site A description of previous <br /> investigations at the site was included in the Quarterly Report - May 1996, dated 17 June 1996, <br /> prepared by AGE The location of the site and the immediately surrounding area are illustrated on <br /> Figure 1 -Location Map Site structures and monitoring well locations are shown on Figure 2 - Site <br /> Plan <br /> The monitoring and sampling was performed in accordance with San Joaquin County Public Health <br /> Services - Environmental Health Division (PHS-EHD) and Regional Water Quality Control Board <br /> (RWQCB) guidelines for the investigation of underground storage tank (UST) sites <br /> 2 0. PROCEDURES <br /> 21 MONITORING WELL PURGE PROCEDURES <br /> On 25 November 1996, the depth to ground water in each monitoring well was measured to the <br /> nearest 0 01 foot utilizing a Solist water level meter The relative ground water elevations were <br /> calculated by subtracting the depth to ground water from the relative casing elevations surveyed from <br /> a temporary benchmark (Table 1 - Relative Ground Water Elevations) Relative ground water <br /> elevations were plotted and contoured on a scaled site map (Figure 3 - Relative Ground Water <br /> Elevation Map) <br /> After water levels were measured, approximately six to fourteen gallons (minimum of three well <br /> volumes) of water were purged from wells MW-1 through MW-9 utilizing a two-stage submersible <br /> pump Temperature, pH and conductivity were measured at regular intervals from each well using <br /> an TCM model 52200 water analyzer Stabilization data and field logs are in Appendix A Purged <br /> water was stored in 55-gallon drums on-site in an area inaccessible to the general public <br />