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I - <br /> Site Background Information <br /> • FORMER FISCO WAREHOUSE (Howard Lenz Property) <br /> I1648 Shaw Road, Stockton, California <br /> The greatest vacuum was measured In the observation point nearest the extraction well <br /> (VW-1) The lowest vacuum was measured in MW-6, approximately 66 feet north of the <br /> extraction point The maximum vacuum measured at the observation points during the pilot <br /> I test was plotted versus the distance from the extraction well The effective radius ofinfluence <br /> was determined by drawing a best-fit line though these data points to correlate distance to <br /> vacuum data At a vacuum potential of 0 10 inches of water, the radius of influence Is <br /> approximately 47 feet, at an induced vacuum potential of 1 0 Inches of water, the radius of <br /> Influence is approximately 30 feet, at 10 0 Inches of water the radius of Influence is <br /> approximately 13 feet Based on the United States Environmental Protection Agency(EPA)- <br /> prepared document,How to Evaluate Alternative Cleanup Technologies For UST sites the <br /> radius of Influence is considered to be the distance from the extraction well at which a <br /> vacuum of at least 0 1 inches of water is observed Based upon an effective vacuum potential <br /> of 0 1 inches of water, the calculated effective radius of Influence at the site will be <br /> approximately 47 feet <br /> I <br /> too <br /> I <br /> I <br /> I <br /> I <br /> I <br /> IAdvanced GeoEnnronmental,Inc <br />