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' Quarterly p -Report January1997 <br /> ART & ARTISTS <br /> 204 East Lodi Avenue <br /> Lodi, California <br /> ' 1.0. INTRODUCTION <br /> In accordance with a request from Ms Mary Lehr,Advanced GeoEnvironmental, Inc (AGE), has <br /> ' prepared this Quarterly Report of field activities conducted at 204 East Lodi Avenue, Lodi, <br /> California Quarterly ground water monitoring activities were performed on 09 January 1997, <br /> monitoring activities for the in-situ soil vapor extraction and air sparging systems were performed <br /> penodically from November 1996 through January 1997 The location of the site and its surroundings <br /> are illustrated in Figure 1 -Location Map Structures and well locations on the site are illustrated in <br /> Figure 2 - Site Plait <br /> The ground water monitoring activities were performed in accordance with guidelines for <br /> investigation of underground storage tank(UST) sites established by the San Joaquin County -Public <br /> Health Services - Environmental Health Division (PHS-EHD) and by the Central Valley Regional <br /> Water Quality Control Board (CVRWQCB) Background information is summarized in the April <br /> 1996 and earlier Quarterly Reports <br /> 1 <br /> 2.0. PROCEDURES <br /> 2 1 MONITORING WELL PURGE PROCEDURES <br /> oc UREs <br />' On 09 January 1997, a Solinst water level meter was used to measure the depth to ground water in <br /> each well, except MW-2, relative to the top of each well casing The relative ground water elevations <br />' were calculated by subtracting the ground water depth from the surveyed casing elevation (Table 1) <br /> After making and recording depth to ground water measurements, monitonng wells MW-1, MW-3, <br />' MW-4, MW-5 and MW-7 were purged using pre-cleaned PVC bailers A minimum of three well <br /> volumes of water was removed from each well, except MW-3 which was purged dry Ground water <br /> stabilization parameters (temperature, pH and electrical conductivity) were measured at regular <br />' intervals in each well using an ICM water analyzer Purged water was stored on-site in 55-gallon <br /> drums In accordance with monitonng requirements for the site, MW-2, MW-6 and MW-8 were not <br /> sampled Stabilization data and field logs are included in Appendix A <br /> 22 COLLECTION OF GROUND WATER SAMPLES <br /> Prior to sampling, the depth to water was remeasured in each purged well to assure a minimum <br /> • p g of <br /> 1 <br />