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f k9l KLEINFEL. DER <br /> results if the TPH proves to consume the majority of the ozone. Consequently, to provide more <br /> predictable information on the effectiveness of ozone to oxidize DCA is the absence of TPH, we <br /> have proposed a one-day bench test described in Section 4.,$: <br /> 3.3 PILOT TEST OBJECTIVE <br /> The broad objective of the pilot testing is to evaluate the assumption that the proposed <br /> technologies are feasible to remediate the site and, if so, gather information necessary to design a <br /> ( full-scale remediation system using the proposed technology. <br /> The five specific goals listed below will be pursued to gather the necessary data and information <br /> to meet the overall objective: <br /> 1. Test the radius of physical stripping for air sparging, interception bubbles in nearby <br /> monitoring wells will be mapped to assess the travel path of sparge bubbles from the pilot <br /> test well. This data will indicate the effective influence of the air sparging system to strip <br /> volatile contaminants from the groundwater. <br /> 2. Determine the contaminant extraction rate of the soil vvor extractions stem. The effluent <br /> concentration of the test well will be compared with the flowrate to calculate the rate of <br /> contaminants being extracted. Assuming TPH interference is not detrimental, this data will <br /> be used to determine the appropriate air treatment method for the full-scale system. . <br /> 3. Test the radius of oxygen delivery„for_the air spar ig_ng system. Changes in dissolved oxygen <br /> concentrations in nearby monitoring wells will be tracked to determine the oxygen <br /> transmission dynamics of the pilot test well. This data will indicate the effective influence of <br /> the air sparging system to deliver oxygen to the groundwater to facilitate degradation of <br /> petroleum hydrocarbons. <br /> 4. Test the radius of ozone delivery for the ozone aparging system. Changes in dissolved and <br /> gaseous ozone concentrations in nearby monitoring wells will be tracked to determine the <br /> ozone transmission dynamics of the pilot test well. This data will indicate the effective <br /> influence of the ozone sparging system to facilitate oxidation of contaminants. <br /> 5. Test the persistence and effectiveness of ozone to oxidize DCA. The pilot test well will be <br /> placed in a location where both petroleum hydrocarbons and DCA are present, and <br /> considering the oxidation demand of TPH for ozone is about three times that of DCA <br /> I (Section 3.1.3), we will bench test the persistence and potential for ozone to oxidize DCA <br /> exclusively. <br /> I <br /> I� <br /> I <br /> 12280/2002R476 Page 10 of 26 <br /> Copyright 2002 Kleinfel der,Inc. May 17,2002 <br />