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Quarterly Report - First Quarter 2005 CAIN ELECTRICAL COMPANY 230 North Church Street,Lodi, California 1.0. INTRODUCTION In accordance with the request of Herman and Ida Weber of Cain Electrical Works, Advanced GeoEnvironmental, Inc. (AGE) has prepared the first quarter 2005 report for 230 North Church Street in Lodi, California. The site and the surrounding area are illustrated on Figure 1. Structures and boring and well locations are illustrated on Figure 2.Background information is summarized in Appendix A. 2.0. PROCEDURES Four ground water monitoring wells (MW-1 through MW-4) were sampled for analysis in March 2005. Field work was performed in accordance with guidelines issued by the Central Valley Regional Water Quality Control Board(CVRWQCB) for the subsurface investigation of chemical release sites. The procedures were outlined in the Initial Site Investigation Work Plan dated 09 January 2004 and Initial Site Investigation Work Plan -Addendum dated 29 March 2004. 2.1. MONITORING WELL PURGING AND SAMPLING On 08 March 2005, depth to ground water was measured in wells MW-1 through MW-4 from the top of the well casings to the nearest 0.01-foot utilizing a Slope water level meter; ground water elevations and gradients in this report are based on the measured depths. Ground water was purged utilizing disposable polyethylene bailers from monitoring wells MW-1 through MW-4, a minimum of three casing-water volumes (approximately 7 to 7.75 gallons) of ground water. Temperature,pH and conductivity were measured for stabilization at regular purge- volume intervals during monitoring using an Oakton water analyzer;field data and logs are included in Appendix B. Purged ground water was containerized in properly labeled Department of Transportation(DOT)-approved model 17H 55-gallon drums and stored on-site. Prior to ground water sampling,the ground water level in each well was measured to ensure that the well achieved a minimum of 80 percent recharge. Following depth measurement, ground water samples were collected from wells MW-1 through MW-4 utilizing disposable polyethylene bailers. The ground water samples were transferred into three 40-m1 EPA-approved volatile organic analysis (VOA)vials containing 0.5 ml 18%hydrochloric acid as a sample preservative; care was taken to ensure that visible air bubbles were not present in the vials after filling and capping. Ground water sample containers were properly labeled,placed in a chilled container and transported under chain of custody protocol to Cal Tech Environmental Laboratories (CTEL), a California Department of Health Services-certified laboratory,for analysis. The ground water samples were analyzed for the Advanced GeoEnvironmental,Inc.