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4.0 CONCLUSIONS <br /> In summary,SVE/DPE has been occurring at this site since July 2006 and was ceased on <br /> February 2, 2009. Well array adjustments and other optimization efforts no longer have <br /> increased vapor concentrations from the well field. Vapor-phase mass removal rates <br /> decreased to low levels and could not be increased indicating that DPE has reached its <br /> effective limit. Furthermore,the DPE system's monthly carbon footprint based solely on <br /> electrical usage is extremely high. Continued operation would result in an increasing <br /> carbon footprint without the benefit of effective remediation in return. <br /> xxxxx(XX) 9 CONESTOGA-ROVERS&ASSOCIATES <br />