Laserfiche WebLink
1 <br /> f <br /> 29 November 2004 <br /> • AGE-NC Project No 01-0815 <br /> Page 3of4 <br /> 28 June 2004 <br /> 3'2 ANALYTICAL RESULTS OF GROUND WATER SAMPLES <br /> TPH-g was detected 1n ground water samples collected from wells MW1 through MW3 at a <br /> maximum concentration of 120,000 micrograms per liter (µg11) in samples from well MW1 <br /> BTEX compounds were detected in groundwater samples collected from wells MW1 through MW3 y <br /> at maximum concentrations of 6,000 µg/1 benzene, 3,000 µg/1 toluene, 640 µg/1 ethylbenzene and <br /> 2,660 µg/l total xylenes in samples from well MW1 <br /> MTBE was detected in ground water samples collected from wells MW1 through MW3 at a <br /> maximum concentration of 110,000µg/1 In samples from well MW 1 TAME was detected in ground <br /> water samples collected from wells MW1 through MW3 at a maximum concentration of 410 µg/1 <br /> in samples from well MW1 No other analytes were detected at or above laboratory detection limits <br /> in the ground water samples analyzed <br /> r� The analytical results of the ground water samples collected on 28 June 2004 are summarized in <br /> Table 2 The laboratory report (CTEL Project No CT214-0406256), quality assurance/quality <br /> control (QA/QC) report and chain of custody form are included in Appendix D A plane view map <br /> depicting the concentrations of petroleum hydrocarbon contamination is illustrated on Figure 4 <br /> 4.0. SUMMARY AND CONCLUSIONS <br /> Based on the data collected from the site, AGE concludes <br /> • The ground water elevations ranged from 19 17 feet to 19 52 feet below MSL Ground water <br /> was inferred to be flowing toward the southeast, away from the former UST area at an <br /> average gradient of 0 005 ft/ft <br /> • TPH-g, MTBE, TAME and BTEX compounds were detected in ground water samples <br />' collected from wells MW 1 through MW3 at maximum concentrations of 120,000µg/1 TPH- <br /> g, 110,000 µg/1 MTBE,410 µg/1 TAME, 6,000 µg11 benzene, 3,000 µg/l toluene, 640 µg/1 <br /> ethylbenzene and 2,660 µg/1 xylenes Concentrations of petroleum hydrocarbons increased ' <br /> ten-fold in the samples collected from well MW1 and increased three-fold or more in the <br /> samples collected from wells MW2 and MW3 Petroleum hydrocarbon impact to ground <br /> water is not defined in any direction <br /> Advanced GeoEnvironmental,Inc <br /> } <br /> I <br />