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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 <br /> Hr Meter Flaw Rate App Vac Dates Cumulative Days Percent i <br /> Date <br /> Readin acfm) Total Da s Uptime Total Das Uptime Uptime <br /> 1/27/2006 9,3699 166 408 300 271 23 50 21 75 90% <br /> 2/14/20067 9,4170 325 95 2 1800 1 96 24630 14467 11% <br /> 2/16/2006 9,467 1 295 122 4 200 209 2550 23 84 100% <br /> 3/1/2006 9,7724 1 261 122 4 1300 12 72 25930 15739 98% <br /> 3/6/2006 9,8999 285 1224 500 531 3050 2915 100% <br /> 31t512006 10,1132 285 1224 900 8 89 26830 16628 99% <br /> 3/21/20065 10,2567 NM NM 600 598 3650 35 13 100% <br /> 3/23/20Q66 <br /> 10,2567 352 1088 200 000 27030 16628 0% <br /> 3/28/2006 <br /> 10,3770 349 81 6 500 5 01 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 /> • 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 /> System shutdown due to low propane <br /> System re-started after propane re-fill <br /> 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_6I00_Quarterly_9&M_500cfm Page 2 of 2 57'KAIVS <br />