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z <br /> Mr Kenneth Earnest <br /> i April 24, 1995 <br /> Page 2 <br /> During this reporting period, the ground water extraction system pumped continuously and <br /> extracted 16,235 gallons of water from monitoring well MW-3. As of January 26, 1995, the <br /> ground water extraction system extracted a cumulative total of 153,799 gallons from monitoring <br /> well MW-3 <br /> January 26 to February 23, 1995 <br /> After replacement of carbon on February 15, 1995, the vapor extraction system ran continuously <br /> through February 23, 1995 The vapor extraction system extracted an estimated 77 pounds of <br /> hydrocarbons (based on field readings) Laboratory analysis for the influent bag sample <br /> collected on February 15, 1995, was nondetect for benzene. The resulting estimated benzene <br /> extraction was 0 0 pound Therefore, as of February 23, 1995, the cumulative totals for <br /> extraction amounts since start-up of the system were 12,858 pounds for hydrocarbons and 211 <br /> pounds for benzene. <br /> For this reporting period, the ground water extraction system pumped continuously and extracted <br /> 16,152 gallons from monitoring well MW-3 As of February 23, 1995, the cumulative ground <br /> water extraction total was 161,951 gallons <br /> February 23 to March 13, 1995 <br /> The vapor extraction system ran continuously from February 23 to March 2, 1995. The system <br /> was shut down on March 2, 1995 and restarted on March 13, 1995 The vapor extraction <br /> system extracted an estimated 56 pounds of hydrocarbons (based on field readings). Laboratory <br /> analysis for the influent bag samples collected on March 2 and 13, 1995, was nondetect for <br /> benzene The resulting estimated benzene extraction was 0.0 pound Therefore, as of March <br /> 13, 1995, the cumulative extraction totals remain at 12,914 pounds for hydrocarbons and 211 <br /> pounds for benzene <br /> For this reporting period, the ground water extraction system extracted 10,118 gallons from <br /> monitoring well MW-3, bringing the cumulative ground water extraction total to 180,069 <br /> gallons. <br /> ACTON• <br /> MICKELSON- <br /> van DAM,INC Upt182 mj <br /> Consulting Scientists, Engineers,and Geologists <br />