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.-0-24-1991 14:29 FROM FES41OVATO TO 12094640138 P.04 <br /> • <br /> PES Environmental, Inc. <br /> Executive Summary <br /> Draft Final Remedial Plan <br /> September 24, 1991 <br /> Page 2 <br /> the downgradient portion of the site and aligned with the axis of the hydrocarbon plume. <br /> Calculations indicate that the capture zone developed while pumping the extraction well at <br /> approximately 2 gallons per minute is sufficient to control the hydrocarbon plume, Carbon <br /> treatment was selected because it is a proven technology, is relatively simple to install and <br /> operate, and is cost effective. The recommended remedial alternative is estimated to have a <br /> capital cost of $132,250 and a net present value of $219,285 assuming 10 years of operation <br /> and maintenance. The schedule for the proposed remedial alternative indicates that <br /> approximately seven months are required for implementation. <br /> Under current site conditions, the risks to human health and the environment posed by the <br /> hydrocarbon contaminated soil and groundwater at the 16 South Cherokee Lane site are <br /> insignificant. The land overlying the contaminated area is paved and there are no industrial <br /> or domestic uses of groundwater from the shallow aquifer at or adjacent to the site. <br /> Although an exposure pathway would result from the implementation of the remedial <br /> altemative, the exposure to air emissions from extracted groundwater and/or contact with <br /> contaminated groundwater would be very limited. <br /> k0bylOpp- Xk .vp5 <br />