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TABLE 3 <br /> Vapor Extraction Operating Data <br /> Thrifty Oil Station#172, Stockton, CA <br /> Hour Mater cumukive Hm since Inlet W drbcarbons Removed <br /> Date Reading Operation last visit Flow Rate Lab concentrations Period Rate cumulative comments <br /> (hrs) (hrsl (hrs) (efm) ppmv 091L (ibs) (ib5fday) (lbs) <br /> 61 1 312 005_ 0 25 546 0 204 75 400 <br /> 6/20/2005 165 25 711 165 201 75 400 9 422 2 1 3705 132 838 <br /> 6/2712005 333 25 879 168 203 75 400 9 569 B 1 367 1 142 407 <br /> 715/2005 524 26 070 191 204 1 300 5 320 5 867 1 7372 146 274 <br /> 7111/2005 668 26 214 144 201 5 320 5802 967 148 B55 <br /> 711872005 834 26 380 166 202 5 320 6655 962 149 520 <br /> 7125!2605 1 003 26 549 169 201 5 320 6776 962 150 198 <br /> 8!112005 1 169 2671.9 166 204 638 2 610 4985 721 150 696 <br /> 8/812005 1 338 26 884 169 206 2 610 3382 4B 0 151 034 <br /> 8/15/2005 _ 1 503 27 049 165 204 2 610 3302 480 151 365 <br /> 812_212005 1 670 27 216 167 204 2 610 3326 478 151 697 Shut down both systems for QWS <br /> 8129!2005_ _ 1 673 27 219 3 201 2 610 59 474 151 703 Restarted system after QWS <br /> 91612005_ 1 865 27 411 192 204 2 610 3795 474 152 083 <br /> 911212005 _ 2 006 27 552 141 203 2 610 2801 477 152 363 <br /> 9119/2005 2 172 27 718 166 201 2-61—0 327 3 473 152 690 <br /> 9/27/2005 2 343 27 889 171 203 134 546 203 9 286 152 894 <br /> 10!312005 2 487 28 033 144 201 546 594 99 152 953 <br /> 1011012005 2 630 28 176 143 204 133 543 590 99 153 012 T <br /> 10!1812005 2$22 28 368 192 204 546 798 100 153 092 Shut down for cataytie mode <br /> 1211212005 2 829 26 375 7 204 546 29 100 153 095 Restart after change to catalytic mode <br /> 1211312005 2 846 28 392 17 201 109 445 64 90 153 101 <br /> 12/1912005 2 949 28 495 F 103 204 445 347 a 1 153 136 <br /> 12/29/2005 3 185 28 731 236 201 445 _ 79 5 8 1 15321,51 <br /> NOTE Inlet concentration Is obtained from laboratory analytical result for Total Petroleum Hydrocarbons(TPH) <br /> and assumed the same until the subsequent sampling <br /> i <br /> 014tab3 Page 4 of 4 171312008 <br />