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Site Background Information: Cherokee Truck Stop <br /> AGE-NC Project No. 97-0312 <br /> Page 9of9 <br /> MASS CALCULATION OF RECOVERED PRODUCTS <br /> On 18 February 2010, a HVSVE pilot test was operational for 8 hours. The average <br /> analytical results (30,000 pg/1) of the HVSVE soil vapor samples, average flow rates <br /> (45 scfm) and the operational period (8 hours) were used to calculate the approximate <br /> mass of extracted gasoline during this period. During the operational period,the combined <br /> mass of SVE hydrocarbons extracted by SVE operations was calculated to be <br /> approximately 40 lbs of gasoline or equivalent to a volume of approximately 6.439 <br /> gallons of gasoline. <br /> Advanced GeoEnvironmental,Inc. <br />