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1 / <br /> 7.0 CONCLUSIONS AND RECOMMENDATIONS <br /> Vapor extraction succeeded in removing approximately 190 pounds of petroleum <br />' hydrocarbons from soil beneath the site Residual soil contamination is believed to be limited <br /> to low concentrations at a depth greater than 22 feet above the historical lugh groundwater <br /> 1 elevation and therefore is not a threat to the degradation of groundwater beneath the site <br /> Groundwater on-site is no longer impacted by TPHg and BTEX soil contamination, and <br /> extremely low levels of TPHd were detected in groundwater Based upon historical analytical <br /> data, this residual soil contamination should not result in adverse effects to public health or <br /> beneficial uses <br /> 1 Analytical results indicate that natural biodegradative and dispersion processes will reduce the <br /> small amount of remaining contaminants over time Case closure is recommended <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> i <br /> 1 <br /> 1 <br /> W u5141+yuwt1y4gr-1995&c 11 <br /> • <br /> SNITN <br /> 1 <br />