Laserfiche WebLink
190m,i <br /> 4.0 SUh4Ry OF FINDINGS <br /> AND CONCLUSIONS <br /> The findings and conclusions from this and <br /> investigative work, based on the results Oflaboratoryla <br /> analyses and field observations are summarized below: <br /> o The soil sampling data and field observations <br /> indicate that the excavation had effectively removed <br /> the hydrocarbon contaminated soil within the confines <br /> Of the property. <br /> hydrocarbons It is estimated that adsorbed_ <br /> remaining onsite phase <br /> only in concentrations of less than n10 Pm as TPH-G <br /> are present <br /> and/or T1?H-D and are limited to the ca illary (ring <br /> It is also most likely that no detectable y fringe. <br /> concentrations of BTEX above laboratory detection <br /> limits are present in the soil onsite. <br /> o All the soil excavated from the site has been <br /> Properly disposed of at designated offsite facilities <br /> with approximately 3,020 cubic <br /> Lquid Waste Management Inc, yards hauled to the <br /> approximately 3,060 cubic yardslaLhauled land <br /> lDurham <br /> Road Class III iandfill. <br /> o. The Predominant soil types encountered at the site <br /> are sandy silt underlain by silty clay. <br /> o The shallow ground water flow direction bene <br /> site is toward the north/northwest ath the <br /> gradient of 0.004 fact per foot. , with an average <br /> tr <br /> o The extent of adsorbed-phase hydrocarbons in the soil <br /> offsite, if present <br /> Residual absorbed-phasespetrolnotbeum hydrocardbon <br /> constituents in the soil offsite, if an <br /> the north and northwest of the ro erty, may e to <br /> ra <br /> general direction of ground water flow-. in the <br /> a Analysis of the water samples collected during -this <br /> investigation indicates_ no_detectable co <br /> ncentrations <br /> _ -of petroleum-hydrocarbon constit - - - <br /> or fecal coliform, uents, organic lead the exception of the sample <br /> from AW-TEX Detectable the <br /> of TPH-D, TPH_g <br /> and BTEX were present .in the sample from AW-»3 <br /> however, the concentrations of BTEX do not exceed an <br /> of the correspondin r <br /> water. g state primary MCLs for drinkingy <br /> f 9. <br /> 10 ' <br />