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TABLE 7 <br /> OPERATIONAL UPTIME AND FLOW RATE <br /> FOR SOIL VAPOR EXTRACTION SYSTEM <br /> Former ARCO Station No 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy,California <br /> System Inf Days Between Sampling Hr Meter App Vac p g Cumulate a Days Percent <br /> Date Flow Rate Dates <br /> Reading (acfm) ("WC) Total Da,,s Uptime Total Da.s U time U time <br /> 1/27/2006 9 369 9 166 408 300 271 23 50 21 75 90% <br /> 2/14/20067 94170 325 952 1800 196 246 30 14467 11% <br /> 2/16/2006 9 467 1 295 1224 200 209 2550 2384 100% <br /> 3/1/2006 9,7724 261 1224 1300 1272 25930 15739 98% <br /> 3/6/2006 9 899 9 285 1224 500 531 3050 29 15 100% <br /> 3/1512006 10 1132 285 1224 900 889 26830 16628 999% <br /> 3/21/20065 10,2567 NM NM 600 598 3650 35 13 100% <br /> 3/23/20066 10,2567 352 1088 J 200 000 27030 16628 0% <br /> 3/28/2006 10 377 0 349 81 6 5 00 501 41 50 40 15 100% <br /> Notes <br /> System observed non-functional due to low propane System shutdown pending propane re-fill <br /> System observed non-functional due to low pressure System re-started after troubleshooting the <br /> main gas valve control <br /> s System restarted after replacing liquid ring blower <br /> System observed non-functional probably to motor starter malfunction System restarted by resetting <br /> motor starter <br /> 5 System shutdown due to low propane <br /> System re-started after propane re-fill <br /> 7 System observed non-operating due to a low air pressure alarm System re-started by adjusting air and <br /> propane flow rates <br /> acfm-actual cubic feet per minute NM-Not Measured <br /> Cons -Consumption Inf -Influent <br /> "WC-Inches Water Column App -Applied <br /> Vac -Vacuum cu ft -cubic feet <br /> Arco 6100 <br /> _ _Quarterly_0&M_500cfm Page 2 of 2 5TKATU5 <br />