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1 <br /> ' 15 November 2005 <br /> . AGE-NC Project No 97-0351 <br /> Page 3 of 4 <br /> ' 3 2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected in the ground water sample collected from well MW-1 at a concentration of <br /> ' 3,600 micrograms per liter (µg11) BTEX compounds were also detected in well MW-1 at the <br /> following concentrations 27µg/l benzene,4 7 4g11 toluene,2 1 µg11 ethylbenzene,and 8 9µg/l total <br /> xylenes No other petroleum hydrocarbons were detected in ground water samples from the other <br /> ' monitoring wells <br /> Analytical results of ground water samples are summarized in Table 2 The laboratory report(CTEL <br /> ' Project No CT214-0507106), quality assurance/quality 6ontrol (QA/QC) report, and chain of <br /> custody form are included in Appendix C Documents confirming the upload of laboratory electronic <br /> deliverable format (EDF) files and depth to water measurements to GeoTracker are included in <br /> Appendix D <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the environmental data collected at the site during the third quarter 2005,AGE concludes <br /> On 18 July 2005, depth to ground water ranged from 7 71 feet to 8 89 feet below the tops of <br /> the well casings Ground water elevation at the site ranged from 140 feet to 169 feet above <br /> tMSL and averaged approximately 1 57 feet above MSL, indicating an increase in elevation <br /> of approximately 0 01 feet since the last ground water monitoring event in April 2005 <br /> • Ground water at the site was inferred to be flowing in a north-plunging trough under a <br /> calculated gradient of approximately 0 002 ft/ft <br /> ' • TPH-g was detected in the ground water sample collected from well MW-1 at a <br /> concentration of 3,600 pg/l BTEX compounds were also detected in well MW-1 at the <br /> following concentrations 27 pg/1 benzene, 4 7 µg11 toluene, 2 1 µg/I ethylbenzene, and 8 9 <br /> ' <br /> pg/1 total xylenes No other petroleum hydrocarbons were detected in ground water samples <br /> from the other monitoring wells <br /> ' At the present time, the vertical extent of dissolved hydrocarbons has not been defined <br /> 5.0. RECOMMENDATIONS <br /> Based on the findings recounted in this report, AGE recommends <br /> ' Continuation of quarterly ground water monitoring events,the next event has been scheduled <br /> ' Advanced GeoEnvironmentai,Inc <br />