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Quarterly Report -- Third Quarter 2003 <br />' GEWEKE LAND DEVELOPMENT & MARKETING <br /> 16 South Cherokee Lane, Lodi, California <br />' 1.0 INTRODUCTION AND SCOPE OF WORK <br />' At the request of Geweke Land Development & Marketing (GLDM), and in accordance with <br /> Cleanup and Abatement Order No 93-701,Advanced GeoEnvironmental,Inc (AGE)has prepared <br /> this report of environmental activities performed at 16 South Cherokee Lane,Lodi,California during <br />' the third quarter of 2003 The scope of work mcluded quarterly ground water monitoring of wells <br /> MW-7,MW-8,MW-9,MW-12,MW-14 and MW15 throug iMW-19 The site and Its surroundings <br /> are Illustrated on Figure 1 Monitoring well and boring locations related to the site are shown on <br />' Figures 1 and 2 <br /> Results of previous Investigations are detailed in the Problem Assessment Report (PAR), the <br />' Quarterly Report-March 1996 and the Quarterly Report-March and June 1999 Analytical results <br /> for ground water samples from previous monitoring events are Included In Table 3 of this report <br /> 1 ' <br /> 2.0. PROCEDURES <br />' • Nineteen on-and off-site monitoring wells were monitored for depth to water and ten on-and off-site <br /> monitoring wells were purged and sampled in September 2003 Wells MW2 and MW4 were dry'and <br />' could not be monitored this quarter Fieldwork was performed in accordance with the Central Valley <br /> Regional Water Quality Control Board(CVRWQCB)Revised Monitoring and Reporting Program <br /> dated 27 June 2001 <br /> 21 WELL MONITORING AND PURGE PROCEDURES <br /> 1 A Herron water level meter was used to measure the depth to ground water to the nearest 0 O 1-foot <br /> in all nineteen wells relative to the tops of the well casings The ground water elevation in each well <br />' was calculated by subtracting the depth to ground water from the surveyed well casing elevation <br /> (Table 1) <br />' After water levels were measured, wells MW-7 and MW-14 were purged using new disposable <br /> plastic bailers and wells MW-8, MW-9,MW-12 and MW15 through MW-19 were'purged using a <br /> Watera Hydrolift Pump <br />' Between 5 0 and 7 5 gallons of water a minimum of 3 casing-water volumes per well were purged <br /> g ( g p ) p g <br /> from wells MW-7, MW-8, MW-9, MW-12, MW-14, MW-15, MW-16 and MW-19 and <br />' approximately 23 and 25 gallons were removed from MW-17 and MW-18, respectively <br /> Advanced GeoEnvironmental,Inc <br /> 1 <br />