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Site Background Information <br /> Former FCSCO WAREHOUSE (Howard Lenz Property) <br /> 1648 Shaw Road, Stockton, California <br /> test was plotted versus the distance from the extraction well.The effective radius of influence <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 />' approxifnately 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 USTsites,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 />' On 31 July 2003, ground water monitoring well MW-8 was installed at the site to a depth of 95 feet <br /> bsg. Seven soil samples were submitted for laboratory analysis from pilot boring MW-8. THP-g, <br /> TPH-d, BTEX, and the five fuel additives were not detected at or above laboratory reporting limits <br /> in the soil samples submitted,nor were they detected at or above reporting limits in the first ground <br /> water sample collected in August 2003 from MW-8. <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />