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• • i <br /> Table A-3 <br /> Operational Uptime of Soil Vapor Extraction System <br /> ARCO Service Station#2186 <br /> 3212 N California Street,Stockton,California <br /> I <br /> Time Between Uptime Between Percent Cumulative time Total uptime <br /> Readings Readings Uptime since startup since startup' <br /> Date 1 Time Hour Meter (daysdays) % Cause of Downtime/Shutdown da s (days) <br /> 8/30104930 45 --- --- --- System start up --- --- <br /> 9/7/04900 <br /> -- <br /> 9/7/04900 94 80 80 100% System shutdown for noise issues Hour meter not working 80 80 <br /> and replaced on 09/23/04 <br /> 9123/04 8 00 00 160 00 0% System still shutdown Replaced hour meter 239 80 <br /> 11/30/04 10 15 00 841 00 0% Sound enclosure installed and system restarted 1080 80 <br /> 12/9/04 10 00 2162 90 90 100% None 1170 170 <br /> QUARTERLY UPTIME(DAYS)= 90 <br /> QUARTERLY TOTAL(DAYS)= 930 <br /> QUARTERLY PERCENT UPTIME(%)= 97% <br /> TOTAL UPTIME SINCE STARTUP'(DAYS)= 170 <br /> TOTAL UPTIME SINCE STARTUP'(%)= 145% <br /> Note 'Hour meter broken prior to fourth quarter 2004 Assumed system ran continuously between 08/30/04 and 09/07/04 <br /> I <br /> Table A-3 <br /> 2186 O&M Tables 4404 1 of 1 <br />