Laserfiche WebLink
1 <br /> Ground Water Monitoring Report - First Quarter 2000 <br />' THREE B'S TRUCK PLAZA <br /> 14749 Thornton Road, Lodi, California <br />' 1.0 INTRODUCTION AND SCOPE OF WORK <br />' Advanced GeoEnvironmental, Inc (AGE) has prepared this Ground Water Monitoring Report for <br /> the first quarter of 2000 for 14749 Thornton Road, Lodi, California The site setting is illustrated on <br /> Figure 1 Site structures and monitoring well locations are depicted on Figure 2 <br />' The objective of the work was to monitor dissolved petroleum hydrocarbon concentrations m ground <br /> J p Y <br />' water and to characterize ground water flow direction and gradient on the site This report is prepared <br /> in accordance with guidelines established by the San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and by the Central Valley Regional Water Quality <br />' Control Board (CVRWQCB) for investigation of underground storage tank (UST) sites A summary <br /> of previous investigations at the site was included in the Preliminary Site Investigation and <br /> Evaluation Report - November 1996, dated 20 June 1997 and prepared by AGE Analytical data <br />' acquired to date is included in this report. <br /> 2.0. QUARTERLY MONITORING AND SAMPLING PROCEDURES <br /> On 25 February 2000, ground water monitoring and sampling was performed at the site on wells <br /> MW-1 through MW-6, grab ground water samples were collected from the Three B's Truck Plaza <br /> domestic drinking water well(DW-1) located in the southwest section of the site on 25 February and <br /> on 28 March 2000 Ground water monitoring procedures for the site were outlined in Work Plan <br />' Addendum - October 1998, dated 14 October 1998 prepared by AGE and approved by the PHS-EHD <br /> by letter dated 21 December 1998 <br /> I <br /> 21 MONITORING WELL PURGE PROCEDURES <br />' Depths to ground water were measured in each well from the tops of the well casings at the site to <br /> the nearest 0 01 foot utilizing a Solinst water level meter Ground water elevations in each well at <br /> the site were calculated by subtracting the measured depth to ground water from the surveyed casing <br /> elevations (Table 1) Ground water elevations were plotted and contoured on a scaled site map <br /> (Figure 3) <br /> After water levels were measured, approximately 9 to 12 gallons of ground water (a minimum of <br /> three well-volumes per well)were removed from wells MW-1 through MW-6 utilizing a submersible <br /> pump Temperature,pH and conductivity were measured for stabilization at regular purge-volume <br /> intervals from each well using a Hydac water analyzer Field data and logs are included with <br /> Appendix A Purged ground water was containerized in 55-gallon drums and was stored on-site in <br /> an area lacking general public access <br /> IAdvanced GeoEn%ironmental,Inc <br />