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1 <br /> 15 October 2001 <br /> AGE-NC Project No 96-0232 <br />' Page 6 of 17 <br />' in Table 2, field measurements and laboratory reports are in Appendix A and Appendix C, <br /> respectively <br />' Laboratory analysis of R-2 grab water samples collected on 02 July, 01 August and 06 September <br /> 2001 reported turbidity values at 4 9 NTUs, 50 NTUs and 2 1 NTUs, laboratory analysis of R-2 <br /> reported TDS values of 150 mg/l, 570 mg/l and 140 mg/l, respectively Analytical results of are <br />' summarized in Table 2, field measurements and laboratory reports are in Appendix A and Appendix <br /> C, respectively <br />' 2 7 MASS-VOLUME REMOVAL CALCULATIONS <br />' Based on effluent flow meter observations (Appendix A), approximately 1,923,307 gallons of <br /> MTBE-impacted water were treated during the third quarter 2001, a total volume of approximately <br />' 7,798,723 gallons of MTBE-impacted water has been treated at the site since the start-up period in <br /> November 2000 <br /> lieThe volume of extracted water between 02 July and 01 August 2001 was equal to 753,053 gallons, <br /> which equates to a mass of 6,278,203 pounds of water Multiplying the average MTBE concentration <br /> (assumed to be 23 5 µg/1 based on 02 July and 01 August 2001 influent grab water samples) by the <br /> pounds of extracted MTBE-impacted ground water yields approximately 0 14 pounds of MTBE <br /> removed from MTBE-impacted ground water between 02 July and 01 August 2001 (Appendix D) <br /> The volume of extracted water between 01 August and 06 September 2001 was equal to 440,035 <br /> gallons, which equates to a mass of 3,668,572 pounds of water Multiplying the average MTBE <br /> concentration(assumed to be 13 Figll based on 01 August and 06 September 2001 influent grab water <br /> samples) by the pounds of extracted MTBE-impacted ground water yields approximately 0 05 <br /> pounds of MTBE removed from MTBE-impacted ground water between 01 August and <br /> 06 September 2001 (Appendix D) <br /> The volume of extracted water between 06 September and 01 October 2001 was equal to 730,219 <br /> gallons, which equates to a mass of 6,087,836 pounds of water Multiplying the average MTBE <br /> concentration(assumed to be 7µg/l based on 06 September 2001 influent grab water sample)by the <br /> pounds of extracted MTBE-impacted ground water yields approximately 0 04 pounds of MTBE <br /> removed from MTBE-impacted ground water between 06 September and 01 October 2001(Appendix <br /> D) <br /> During the third quarter 2001, an estimated 0 25 pounds of MTBE was extracted from ground water, <br /> to date, the ground water treatment system has removed a total of approximately 9 00 pounds of <br /> MTBE from extracted ground water (Table 8) Third quarter 2001 mass-volume calculations of <br /> Advanced GeoEnvironmentai,Inc <br />