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IQuarterly Report - Fourth Quarter 2003 • Former Fisco Warehouse (Howard Lenz Property) 1648 Shaw Road, Stockton, California 1.0. INTRODUCTION At the request of Mr Peter Lenz of Innovative Beverage Brokers,Advanced GeoEnvironmental,Inc (AGE) has prepared this quarterly report for the property located at 1648 Shaw Road, Stockton, California The site and the surrounding area are illustrated in Figure 1 Structures,boring and well locations are illustrated on Figure 2 Site background information is provided in Appendix A I2.0. PROCEDURES Field work was performed in accordance with guidelines issued by San Joaquin County I Environmental Health Department (EHD) for the sampling of ground water monitoring wells and Central Valley Regional Water Quality Control Board(CVRWQCB)guidelines for investigation of underground storage tank (UST) sites I 2 1 WELL MONITORING AND EVACUATION MPOn 20 November 2003, a Solmst water level meter was used to measure the depth to ground water in monitoring well MW-8 relative to the top of the well casings Depth measurements were not possible in wells MW-1 through MW-7 because these wells had no measurable water(Appendix B) Consequently, these wells could not be purged or sampled Field sheets and data are included in Appendix B After recording the water level measurement, a Watera Hydrohft Pump was used to purge well MW-8 of standing water Approximately 5 0 gallons of water were purged from MW-8 before the well was purged dry Ground water temperature,pH and conductivity were measured during purging using an Oakton water analyzer Purged water was stored on-site in labeled, 55-gallon DOT-approved drums Field sheets and data are included in Appendix B 2 2 COLLECTION OF GROUND WATER SAMPLES A water sample was collected from well MW-8 using dedicated tubing after allowing the well to achieve a minimum 80% recovery of the pre-purge water volume The water samples were transferred into three 40-m1 volatile organic analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid as a sample preservative and into one 1-liter amber bottle without added preservative After collection, the samples were properly labeled, placed in a chilled container and • transported under chain-of-custody to Cal Tech Environmental Laboratories(CTEL),a Department of Health Services-certified laboratory Advanced GeoEnvi ron mental,inc