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S E C <br /> 1 SIECOR <br /> • <br /> at the site. A total of 11,870 gallons of groundwater was extracted during the DPE. <br /> Laboratory analysis of extracted groundwater detected TPHg at a concentration of <br /> 3,300 parts per billion (ppb). Groundwater extraction flow rates ranged from 0 gallons <br /> i per minute (gpm) to 5.5 gpm for the five day DPE test. During the DPE event <br /> approximately 304.84 pounds of TPHg, 1.32 pounds of benzene, and 0.07 pounds of <br /> MtBE were extracted from the soil beneath the site. Vapor extraction flow rates ranged <br /> ' from 15.26 standard cubic feet per minute (scfm) to 166.20 scfm at vacuums ranging <br /> from 15 inches of mercury to 26 inches of mercury for the five day DPE test. The radius <br /> of influence was graphically determined to be less than 71 feet for extraction well MW-6. <br /> ' Based on the data collected during the DPE tests, DPE was capable of removing high <br /> concentration of hydrocarbons from soil and groundwater beneath the site (SECOR, <br /> 2002). <br /> 1 { <br /> 1 <br /> a <br />� 4 <br /> I <br /> a <br /> I <br /> 1 1205 SCM.doc <br /> ff 5 <br />