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ti <br /> Page 2 <br /> 574 W. Grant Line Road <br /> system. The duration of the study must be a minimum of 6 months. If the data collected <br /> during the study demonstrates that ozone sparging reduces the gasoline contaminant <br /> concentrations in the groundwater with no adverse effect, EHD.will accept this <br /> technology as the most cost effective. A final corrective action plan can then be prepared <br /> that includes any system modifications needed, i.e. additional sparge points. <br /> If you have any further questions regarding this matter, contact Harlin Knoll at (209) S <br /> 468-3442. <br /> Donna Heran,RENS,Director <br /> Environmental Health Department <br /> Harlin Knoll, Senior RENS Margarel Lagorio, REHS <br /> LOP/Site Mitigation Unit N Supervisor <br /> cc: Donald Thompson <br /> Aqua Science Engineer's Inc. <br />