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1 Quarterly Report - Second Quarter 2005 <br /> QUICK N SAVE #2 <br />' 2057 South El Dorado Street, Stockton, California <br />' 1.0. INTRODUCTION <br /> At the request of Mr Charan Dhillon,Advanced GeoEnvironmental, Inc (AGE) has prepared this <br />' quarterly report for the property located at 2057 South El Dorado Street, Stockton,California(site) <br /> The site and the surrounding area are illustrated on Figure 1 Structures,borings,and monitoring well <br /> locations are illustrated on Figure 2 Site background information is summarized in Appendix A <br />' 2.0. PROCEDURES <br /> On 17 May 2005,three ground water monitoring wells(MW-1,MW-2,and MW-3)were monitored <br />' and sampled Field work was performed in accordance with guidelines issued by the Central Valley <br /> Regional Water Quality Control Board(CVRWQCB)for the investigation of underground storage <br /> tank (UST) sites and by the San Joaquin County Environmental Health Department (EHD) for the <br />' sampling of ground water monitoring wells <br />' . 2 1 WELL MONITORING AND EVACUATION <br /> The depth to ground water in each monitoring well was measured from the top of the well casing to <br />' the nearest 0 01-foot utilizing a Solmst water level meter Ground water elevation in each well was <br /> calculated by subtracting the measured depth to ground water from the surveyed casing elevation <br /> fAfter water levels were measured, approximately 7 gallons of water (a minimum of three casing- <br /> water volumes per well)were purged from monitoring wells MW-1 through MW-3 using a Waterra <br />' Hydra-Lift II inertia pump and dedicated tubing A petroleum-like sheen was observed on the ground <br /> water purged from well MW-3 Ground water temperature,pH, and conductivity were measured at <br /> regular intervals during purging using an Oakton water analyzer Field sheets and data are included <br />' in Appendix B Purged water was stored on-site in properly labeled, Department of Transportation <br /> (DOT)-approved 55-gallon drums <br />' 22 COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br />' Water samples were collected from each purged well utilizing the Waterra Hydro-Lift II inertia pump <br /> and dedicated tubing after allowing the wells to achieve a minimum 80%recovery of the pre-purge <br /> water volume Each water sample was transferred into Iaboratory-supplied,40-milliliter(ml)volatile <br /> I organic analysis (VOA) vials containing 0 5 mi 18% hydrochloric acid as preservative After <br /> collection, the samples were properly labeled, placed in a chilled container, and transported under <br /> • chain ofcustody to Ca!Tech Environmental Laboratories(CTEL),a California Department of Health <br /> Advanced GeoEnvironmental,Inc <br /> I <br />