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27 January 2006 <br /> AGE-NC Project No 98-0500 <br /> Page 8 of 10 <br /> HU3/HU4 - Water table 100 feet <br /> TPH-g was detected in Intermediate wells at concentrations of 120µg11 in well MW-25, 200 µg11 in <br /> well MW-26, 530 µg/1 in well MW-23, and 300 µg/l in well MW-38 BTEX compounds were <br /> detected in samples analyzed from well MW-23 at concentrations of 4 3 µg/l toluene, 9 µg/l <br /> ethylbenzene, and 55 µg11 xylenes TPH-d and TPH-Stoddard were not detected in HU3/4 ground <br /> water samples <br /> In addition,the fuel additive 1,2-DCA was detected in samples MW-25,MW-26,MW-30, MW-38, <br /> and MW-40 at a maximum concentration of 210 µg/1 (MW-26) A map depicting the estimated <br /> distribution of dissolved 1,2-DCA in HU3/4 is Illustrated on Figure 7 <br /> HU6 - Water table 150 feet <br /> TPH-g, TPH-stoddard, and TPH-d were not detected in the HU6 ground water samples BTEX <br /> compounds were not detected in the HU6 wells The fuel additive 1,2-DCA was detected in samples <br /> MW-34,MW-36, MW-42, MW-44, and MW-46 at a maximum concentration of 96 Pg/1 (MW-36) <br /> at the former dispenser area A map depicting the estimated distribution of dissolved 1,2-DCA in <br /> HU6 is illustrated on Figure 8 <br /> Ground water samples from monitoring wells MW-3 5 and MW-3 7 were non-detect for hydrocarbons <br /> and fuel additives <br /> Analytical results for the ground water samples are summarized in Table 4 The laboratory reports <br /> (CTEL Project Nos CT214-0512061, -0512071, -0512072, and -0512086), QA/QC reports, and <br /> chain of custody forms are presented in Appendix E GeoTracker submittal confirmation sheets are <br /> presented in Appendix F <br /> 4.0. CONCLUSIONS <br /> The findings from the fourth quarter 2005 events are as follows <br /> • The mass of hydrocarbons removed by the SVE system demonstrated successful remediation, <br /> a total of 1,176 lbs, or volume of 188 gallons, was removed over a one-quarter period based <br /> on analysis of soil-vapor samples and SVE system operational parameters <br /> • The ground water elevation at the site has increased 6 6 feet over a one-quarter period <br /> • <br /> Advanced GeoEnvtronmental,Inc <br /> I <br />