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SVE System Installation and Efficiency Report <br /> Canepa's Car Wash(Pacific Avenue) <br /> June 25, 1999 <br /> Page -6 <br /> I0 The estimated VOC extraction rate has ranged from approximately 18 6 to 131 6 lbs/day, <br /> • The total estimated pounds of VOCs removed as of May 31, 1999 is approximately 3,100 <br /> Ipounds, and <br /> • Sufficient data have not been collected to determine if the radius of Influence of the SVE system <br /> extends to the perimeter of the gasoline plume <br /> 8.0 RECOMMENDATIONS <br /> Based on the data provided in this report, the SVE system has removed approximately 3,100 pounds of <br /> gasoline from the soil in the vadose zone The brief period of operation (approximately 50 days as of <br /> May 31, 1999) has not allowed for determination of maximum operational efficiency of the SVE system <br /> I Condor recommends continued operation of the SVE system supplemented with quarterly laboratory <br /> analyses of the system influent and effluent to determine optimum operating conditions and to generate <br /> sufficient data to provide appropriate future recommendations If you need additional information or <br /> have any questions, please contact us at (209) 234-0518 <br /> Respectfully submitted, <br /> CONDOR EARTH TECHNOLOGIES, iNC X99 <br /> No 0162 <br /> DF CAS <br /> R David Meade John H Kramer, Ph D <br /> Project Geologist California Certified Hydrogeologist#182 <br /> P 11707 Canepa-Paetfc\SVE System\Reportsll&E RptI doc <br /> i <br /> CONDOR <br />