Laserfiche WebLink
05 June 2003 <br /> AGE-NC Project No 99-0637 <br /> Page 5 of 7 <br /> detected at or above laboratory reporting limits in the soil samples Stratigraphic cross sections <br /> illustrating the extent of impacted soil are depicted in Figures 3 and 4 <br /> Analytical results of soil samples are summarized on Table 2 The laboratory reports (MAI Work <br /> Order No 0302269), quality assurance and quality control (QA/QC) report and chain-of-custody <br /> Iforms are included in Appendix D <br /> I3 3 GROUND WATER GRADIENT AND FLOW DIRECTION <br /> At the time of the February 2003 sampling event, depths to ground water ranged from 15 83 feet to <br /> 17 53 feet below the tops of the well casings Ground water elevations at the site ranged from <br /> 16 43 feet above mean sea level(MSL)in well MW 10 to 16 54 feet above MSL in wells MW3 and <br /> MW7 (Table 1) During this monitoring event,the ground water levels in the wells were at least six <br /> feet below the tops of the well screens, indicating that the wells are screened properly to yield <br /> representative shallow ground water samples The ground water elevation at the site increased <br /> • approximately 3 5 feet between the October 2002 and February 2003 monitoring events <br /> Ground water flow was inferred to be ranging between a northwesterly flow direction on the east side <br /> of the site to a northeasterly direction on the west side of the site The average ground water gradient <br /> was determined to be 0 005 feet/feet Figure 5 illustrates the contoured ground water elevations as <br /> measured on 27 February 2003 <br /> 3 4 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> MTBE was detected in the ground water samples collected from wells MW 1, MW2, MW4, MW5 <br /> MW6,MW9 and MW 10 at concentrations ranging from 1 2µg/1 in well MW 10 to 2,400 µg/l in well <br />' MWS No other analytes were detected at or above laboratory reporting limits in the ground water <br /> samples <br />' The,analytical results of ground water samples are summarized on.Tables 3 and 4 The laboratory <br /> reports(MAI Lab Work Order No 0302391),QA/QC report and chain-of-custody form are included <br /> in Appendix E <br /> • <br /> Advanced GeoEnvsronmentnl,Inc <br /> 1 <br />