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4 <br /> f <br /> 31 July 2000 <br /> AGE-NC Project No 98-0426 <br />� yPage 3 of 4 <br /> I MTBE was only detected in the ground water sample collected from MW3 at a concentration of 53 <br /> ug/l No other fuel oxygenates were detected in the ground water samples collected <br /> The current and historic ground water analytical results are summarized on Table 2 The laboratory F <br /> report (AAL Order No A00042508), chain-of-custody form and the laboratory QA/QC report are <br /> included in Appendix B <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE finds <br /> • Ground water flow at the site was toward the north-northeast which is consistent with the <br /> January 2000 monitoring event and regional trends The ground water elevation has increased <br /> approximately 2 4 feet since the January 2000 sampling event <br /> • In general, TPH-g and BTE&X compounds have increased in MW2 and MW3 this quarter <br /> lie <br /> as compared to the January 2000 sampling event 'In addition, MTBE was detected in the <br /> ground water sample collected from MW3 at a concentration of 53 ug/l MTBE was not <br /> detected in any wells in January 2000 The increase in hydrocarbon concentrations appears <br /> to be related to the rise in ground water encountering a "hydrocarbon smear zone" in the <br /> capillary fringe <br /> 5.0 RECOMMENDATIONS <br />' AGE recommends the following <br /> • Continued quarterly monitoring of the ground water monitoring wells on-site The next <br /> monitoring event will be performed in July 2000 <br /> • AGE "recently submitted a work plan to Install two additional ground water wells in the <br />' dawn-gradient direction from monitoring well MW3 (Figure 2) The ,�ork plan has been <br /> approved by the PHS-EHD and the installation of these wells is anticipated to be installed <br /> in'the third quarter of 2000 <br /> f <br /> 1 , <br /> A dioncued GeoEnv ironmental,Inc <br />