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s • <br /> Former Countryside Market,Stockton,California <br /> Feasibility Study and Interim Remedial Action Plan May 20,2013 <br /> Each of the above alternatives was evaluated against the previously specified criteria. The detailed <br /> analysis for remedial alternatives for groundwater at the Site is provided as Table 5. As depicted on <br /> Table 5, AS and biosparging are the two highest rated remedial alternatives with an estimated timeframe <br /> for achieving the cleanup goals of about 3-5 years. A detailed comparison of estimated project costs for <br /> the two final remedial alternatives is provided as Table 6 along with SVE/bioventing costs (i.e., should soil <br /> remediation be required based on the results of proposed soil/soil gas data collection activities presented <br /> in Section 5.0). <br /> 4.2.1 Interim Remedial Technology Selection <br /> Based on SGI's detailed evaluation of remedial technologies, sparging h�s been selected as the best <br /> available technology to remediate petroleum hydrocarbons in groundwater and saturated soil (i.e., <br /> capillary fringe/smear zone) at the Site and surrounding area. SGI has successfully implemented <br /> sparging at numerous sites, and is confident that this technology will help to efficiently meet the remedial <br /> goals. In order to confirm this will be the case, SGI proposes to conduct feasibility testing and collect <br /> geochemistry/bioremediation indicator data, as detailed in the following sect on. <br /> FaazmdySUcyand FeasaimSWy&lR P TcodFina,e 4-4 The Source Group,Inc. <br />