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Table A-i <br /> Soil Vapor Extraction System Performance Data <br /> ARCO Service Station#2186 <br /> 3212 N California Street,Stockton,California <br /> System Data FID GRO Benzene MtBE <br /> Influent Influent MtBE <br /> Hour Meter Average Concen- Removal Net Removed Concen- Removal Net Removed Concen- Removal Net Removed <br /> Sample Date Reading Flow Rate Influent Midpoint Effluent tration Rate Removed to Date tration Rate Removed to Date tration Rate Removed to Date <br /> ID Sampled (hours) (scfm) (ppmv) (ppmv) (ppmv) (ppmv) (lbs/day) (pounds) (pounds) (ppmv) (lbs/day) (pounds) (pounds) (ppmv) (lbs/day) (pounds) (pounds) <br /> INFL 08/30/04 45 95 111 01 01 --- --- --- --- --- --- --- --- --- --- <br /> INFL 09/07/04 94 a --- 100 -- 00 390 1174 93 64 9364 <0 31 000 000 000 98 030 241 241 <br /> [NFL 11/30/04 00 b 196 23 02 00 98 607 000 9364 <015 000 000 000 1 5 010 000 241 <br /> INFL 12/09/04 2162 109 28 03 01 140 483 3042 12406 <0 15 000 000 000 1 3 005 048 288 <br /> REPORTING PERIOD FOURTH QUARTER 2004 <br /> TOTAL POUNDS REMOVED 1241 000 288 <br /> TOTAL GALLONS REMOVED 203 060 047 <br /> PERIOD POUNDS REMOVED. 30.4 000 0.48 <br /> PERIOD GALLONS REMOVED so 000 0.08 <br /> PERIOD AVG FLOW RATE 152 <br /> scfm =Standard cubic feet per minute ppmv =Parts per million by volume - =Not available or not applicable <br /> lbs =Pounds GRO =Gasoline Range Organics <6 3 =Less than indicated laboratory reporting limit <br /> a System shutdown due to excessive noise issues Hour meter was not working Mass removal calculations are based on the assumption that the system ran continuously between <br /> 08/30/04 and 09/07/04 at the same concentration and flow rates <br /> b System was restarted on November 30,2004 with sound enclosure and new hour meter <br /> 2186 O&M Tables 4004 <br /> Table A-1 Page 1 of 1 <br />