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' Ground Water Monitoring ort - Third Quarter 2001 S g Re P ' Former Flsco Warehouse (Howard Lenz Property) 1648 Shaw Road, Stockton, California ' 1.0. INTRODUCTION ' At the request ofMr Peter Lenz of Innovative Beverage Brokers,Advanced GeoEnvnronmental,Inc (AGE) has prepared thus quarterly report for the property located at 1648 Shaw Road, Stockton, California The site and the surrounding area are illustrated in Figure 1 Structures,boring and well ' locations are illustrated on Figure 2 Background information Is summarized in Preliminary Site Investigation Report, dated 30 December 1997, prepared by AGE 1 2.0. PROCEDURES ' Field work was performed in accordance with San Joaquin County Public Health Services - Environmental Health Division's (PHS-EHD) guidelines for the sampling of ground water monitoring wells and Regional Water Quality Control Board(RWQCB)guidelines for investigation ' of underground storage tank (UST) sites lie 2 1 MONITORING WELL PURGE PROCEDURES ' Ground water sampling of MW 1 through MW7 was conducted on 07 August 2001 A Sollnst water level meter was used to measure the depth to ground water in the seven wells relative to the tops of the well casings The ground water elevations and gradient were determined from these data(Table 1) After recorchng water level measurements,a disposable plastic bailer was used to purge monitoring I wells MW 1 through MW7 of standing water Approximately one gallon of water(minimum of 3 casing-water volumes)was removed from MW 1,approximately two gallons of water were removed from MW3 and approximately four gallons of water were removed from MW4 through MW7 Less than 0 25 gallons of water were removed from well MW2 before it was purged dry Ground water temperature,pH and conductivity were measured at regular intervals during purging using an Oakton water analyzer Field sheets and data are included In Appendix A Purged water was stored on-site Iin labeled, 55-gallon DOT-approved drums 22 COLLECTION OF GROUND WATER SAMPLES Water samples were collected from each purged well using new disposable plastic bailers Each water sample was transferred into three 40-m1 VOA vials containing 0 5 ml 18%hydrochloric acid 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 Advanced GeoEnvironmental,Inc