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Quarterly Report - First Quarter 2005 GEWEKE LAND DEVELOPMENT & MARKETING 16 South Cherokee Lane, Lodi, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Mr Dale Gillespie of G-REM, and in accordance with Cleanup and Abatement Order No 93-701, Advanced GeoEnvironmental, Inc (AGE) has prepared this report of environmental activities performed at 16 South Cherokee Lane, Lodi, California during the First Quarter of 2005 The scope of work included the performance of a quarterly ground water monitoring event and the preparation of this report The site and its surroundings are illustrated on Figure 1 Monitoring wells, remediation wells and boring locations related to the site are shown on Figure 2 Results of previous investigations are detailed in the Problem Assessment Report (PAR), the Quarterly Report-March 1996 and the Quarterly Report-March and June 1999 Analytical results for ground water samples from previous monitoring events are included in Table 5 of this report 2.0. PROCEDURES Field work was performed in accordance with the Central Valley Regional Water Quality Control Board(CVRWQCB)Revised Monitoring and Reporting Program(MRP)No 93-701,dated 27 June 2001, under MRP No 93-701, wells MW-7 through MW-9, MW-12, and MW-14 were to be sampled on a quarterly basis, and all wells sampled on an annual basis However, since June 2001, wells with detectable 1,2-dichloroethane concentrations (EW-1, MW-4 and MW-11), as well as newly constructed wells,have been added to the list of wells to be sampled on a quarterly basis This quarter all wells on- and off-site were sampled 2 1 WELL MONITORING AND PURGE PROCEDURES On 03 March 2005, twenty three on- and off-site ground water wells were monitored for depth to water and purged and sampled A Sohnst water level meter was used to measure the depth to ground water to the nearest 0 01-foot in all twenty-three wells relative to the tops of the well casings The ground water elevation in each well was calculated by subtracting the depth to ground water from the surveyed well casing elevation (Table 1) After water levels were measured,wells MW-1 through MW-6 and MW-14,were purged using new disposable plastic bailers Wells MW-7 through MW-13,and MW-15 through MW-22 were purged using a Waterra Inertial Pump, and well EW-1 was purged using a Grundfos Submersible Pump Between 0 1 and 3 0 gallons of water (a minimum of 3 casing-water volumes per well) were removed from wells that were purged by disposable bailers Approximately 5 5 to 29 gallons were Advanced GeoEnvironmental,Inc