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a - 1 . • Quarterly Report - Second Quarter 2002 MEL BOKIDES PETROLEUM, INC. 501 W. Lodi Avenue, Lodi, California 1.0. INTRODUCTION ' At the request of Mr. Nicholas Bokides of Mel Bokides Petroleum Inc., Advanced GeoEnvironmental, Inc. (AGE) has prepared this quarterly report for 501 W. Lodi Avenue, Lodi, California (site). The site setting is illustrated on Figure 1. Site structures and monitoring well locations are depicted on Figure 2. ' This report documents three soil-vapor sampling events between April and June 2002 and a ground water monitoring event on 06 June 2002, and presents the results of the laboratory analyses of soil- vapor and ground water samples. ' A sununaprevious revious Investigations at the site was Included in the AGE-prepared Work Plan for Site Assessment, Mel Bokides Petroleum, 501 West Lodi Avenue, Lodi, California, dated 15 May 1998. ' • 2.0. PROCEDURES ' Field work was conducted in accordance with guidelines issued by the Central Valley Regional Water Quality Control Board(CVRWQCB)and directives issued bythe San Joaquin County Environmental Health Department (EHD) for subsurface investigations and sampling of ground water monitoring ' wells at sites with underground storage tank (UST) system releases. ' 2.1. WELL MONITORING AND EVACUATION On 06 June 2002, the depth to ground water in each monitoring well was measured to the nearest ' 0.01-foot utilizing a•Solinst water level meter. Ground water monitoring wells BMW-1 through BMW-5 (site wells) and MW-5 (off-site well) were monitored and sampled. The ground water elevation was then calculated by subtracting the measured depth to ground water from the surveyed ' casing elevations (Table 1). Ground water elevations were later plotted and contoured on a scaled site map (Figure 3). _- - After water levels -were measured approximately 36 gallons (a minimum of three casing-water volumes per well) of water were purged from wells BMW-1 and BMW-2 utilizing a Grundfos ' submersible pump and approximately 4 to 10 gallons of water were purged from the remaining wells with dedicated, disposal bailers. An Oakton water t analyzers were utilized to monitor temperature, H and mP , p conductivity of purged water at regular purge-volume intervals. Stabilization data and field logs are included in Appendix A. Purged ground water was containerized in 55-gallon drums and stored on-site. ' Advanced GeoEnvironmental,Inc.