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Work Plan for Refined Plume Definition and Ma <br /> nagement of FloatingAroduct-7500 W 11th St., Tracy, Cr4. Page 64 <br /> ry closed under the permit and oversight of the SJCEHD. A final groundwater-quality <br /> monitoring round using samples recovered from the extraction wells can be performed on the <br /> sane day that the drilling contractor can close all three wells. Thereafter, sample analyses and <br /> a system closure report can be available within 60 days. <br /> 9.4.2.6 Cost Estimate <br /> SJC has prepared an engineer's estimate for implementation of a LNAPL removal program <br /> based on suctioning product from extraction wells into a vacuum truck. The estimate is <br /> detailed in Appendix A and is summarized below. <br /> CAPITAL COST <br /> Installation $15,800 <br /> (Including final design, well installation <br /> and first round of LNAPL extraction) <br /> Total Estimated Capital Cost <br /> p $15,800 <br /> OPERATING COST <br /> Cost Per Round of $ 2,950 <br /> Extraction of Emulsified <br /> Floating Product and Groundwater <br /> Total Estimated Operating Cost* $38,350 <br /> * I difficult to estimate <br /> Total operating costs for this remediation technology are <br /> because it is not possible to accurately predetermine the number of rounds of <br /> LNAPL extraction that will be required, but from experience at other sites, the <br /> total cost shown is based on the following assumptions: A vacuum truck will be <br /> mobilized to the site weekly for three weeks following the date of the first <br /> LNAPL extraction. The extraction schedule will then fall to once per month for <br /> the next two LNAP extraction rounds and will, finally, be reduced to a quarterly <br /> schedule until the total time elapsed from the first LNAPL extraction is equal to <br /> two years <br /> CLOSURE COST <br /> System Closure Operations $ 7,350 <br /> (Including closure of extraction wells, <br /> -t final round of groundwater-quality <br /> monitoring and results reporting.) <br /> SJC <br />