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1 Quarterly Report - Fourth Quarter 2004 iFormer 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 on Figure 1. Structures,boring,and well locations are illustrated on Figure 2. Site background information is provided in Appendix A. ' 2.0. PROCEDURES Field work was performed in accordance with guidelines issued by the San Joaquin County ' Environmental Health Department (EHD) for the sampling of ground water monitoring wells and Central Valley Regional Water Quality Control Board(CVRWQCB)guidelines for the investigation of underground storage tank (UST) sites. I 2.1. WELL MONITORING AND EVACUATION On 23 December 2004, a Solinst water level meter was used to measure the depth to ground water in monitoring wells MW-1 through MW-8.The water table was not present in the screened intervals of wells MW-1 through MW-7. After recording the water level measurement in monitoring well MW-8, a Waterra inertia pump with dedicated tubing was used to purge the well of standing water; approximately 6 gallons of water were purged from well MW-8 before it was purged near-dry. Ground water temperature, pH, and conductivity were measured at regular intervals during the purging using an Oakton water analyzer. Purged water was stored on-site in labeled, 55-gallon Department of Transportation (DOT)-approved drums. Field sheets and data are included in Appendix B. r - 2.2. COLLECTION OF GROUND WATER SAMPLES A ground water sample was collected from monitoring well MW-8 using dedicated tubing after allowing the well to achieve a minimum 80%recovery of the pre-purge water volume. The ground water sample was transferred into three 40-milliliter (ml) volatile organic analysis (VOA) vials containing 0.5 ml 18%hydrochloric acid solution 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 I (CTEL),a Department of Health Services-certified analytical laboratory.The ground water samples • were analyzed for: Advanced GeoEnvironmental,Inc.