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h <br /> 15 February 2000 <br /> AGE-NC Project No 98-0448 <br /> Page 13 of 33 <br />' for transmissivity are included with Appendix K <br /> The storativity value for well EW- I was calculated at 0 15 (unitless), storativity values from MW- <br /> 1, MW-2 and MW-4A ranged from 0 011 and 0 079 Calculations for storativity are included with <br /> Appendix K <br />' A radius of influence as high as 16 feet was calculated using the 10-minute data, a radius of <br /> influence as high as 17 feet was calculated using the 100-minute data <br />' 5 3 LABORATORY ANALYSIS OF PURGED GROUND WATER <br />' TPH-g was detected in the water sample collected from the aboveground storage baker tank at a <br /> concentration of 96,000 ug/l Various BTEX compounds were detected in the water sample at <br /> concentrations as high as 13,000,ugll Analytical results of the ground water sample are summarized <br /> in Table 2 The laboratory reports (McCarnpbell Analytical Inc I D 15514) and chain-of-custody <br /> forms are presented in Appendix L <br /> 5 4 PURGED GROUND WATER DISPOSAL <br />' Approximately 4,500 gallons of purged water were generated during operation of the pump test On <br /> 18 August 1999, the pump test purged water was pumped from the aboveground storage Baker tank , <br />' and into a vacuum truck(supplied by American Valley Environmental Services, Inc ), the pump test <br /> purged water was hauled offsite to Industrial Service Oil Co , an EPA-approved hazardous waste <br /> facility for disposal Documentation and uniform hazardous waste manifest for disposal of the pump <br />' test purged water is contained in Appendix M , <br />' 6.0. ASSESSMENT OF HYDROCARBON-IMPACTED SOIL AND GROUND WATER <br /> Between June 1994 and November 1999, four soil bonngs (B-T, B-1, B-2 and B-3), eight ground <br />' water monitoring wells (MW-1 through MW-8), two SVE wells(VW- I and VW-2) and one ground <br /> water extraction well (EW-1) were installed at the site as part of an ongoing subsurface petroleum <br />' hydrocarbon investigation, thirteen ground water monitoring/sampling events were performed at the <br /> site to monitor dissolved petroleum hydrocarbon concentrations in ground water and to characterize <br /> ground water flow direction and gradient on the site The greatest concentrations of petroleum <br />' hydrocarbon-impacted soil were encountered at soil borings B-T, MW-1, MW-2 and VW-1 The <br /> greatest concentrations of dissolved petroleum hydrocarbon impacted ground water were <br /> encountered at wells MW-1, MW-2, MW-4A, MW-4B and EW-1 Analytical results of soil and <br /> A <br /> Advanced GeoEmironmental,Inc <br /> r <br />