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TABLE 3 <br /> Vapor Extraction Operating Data <br /> Thrifty Oil Station #172, Stockton, CA <br /> Hour Meter cumuttiveHrs since inlet Hydrocarbons Removed <br /> Date Reading Operation last visit Flow Rate Lab Concentrations I Period Rate Cumulative comments <br /> (hrs) (hrs) (hrs) (cfm) PPM'1 ug1L I (lbs) (lbslday) (ibs) <br /> 8122!2002 9 978 9 977 2 210 2 910 45 537 34 565 Found system off power failure restarted <br /> 62912002 10 147 10 146 169 203 2 910 3798 539 34 945 <br /> 915!2002 —10311 10 310 164 204 2 910 3632 532 35 308 <br />' 9!1212002 10 485 10 484 174 201 483 2 130 3321 458 35 640 <br /> 911912002 10 642 10 641 157 201 2 130 251 4 384 35 891 <br /> 912612002 10 811 10 810 169 201 2 130 2706 384 36 162 <br /> 1013!2002 10 984 10 983 173 201 2 130 2770 384 36 439 <br />' 10110/2002 11 150 11 149 166 203 2 130 2671 386 36 706 <br /> 10117/2002 11 321 11 320 171 203 2 640 11 700 B97 8 1260 37 604 <br /> _13!2412002 11 480 11 479 159 201 11 700 1 4054 2121 39 009 <br /> 10131/2002 11 653 11 652 173 201 11 700 1 521 6 211 1 40 531 <br /> 11/712002 11 820 11 819 167 205 11 700 1 4834 2132 42 014 <br />' 11/14/2002 11 987 11 986 167 201 1 090 4 810 1 046 6 1504 43 061 <br /> 11/19/2002 12 107 12 106 120 4 810 433 9 868 43 495 Shut down system for OWS <br /> 11/2112002 12 107 12 106 0 213 4 810 00 43 495 Restarted <br /> 11/26/2002 12 227 12 226 120 201 4 810 4469 894 43 942 <br /> 1215/2002 12 231 12 230 4 201 4 810 145 868 43 956 Found system on switched turned off restarted <br /> 12/12/2002 12 375 12 374 144 201 9 440 38 600 2 349 6 3916 46 306 Tlme estimated hour meter not working <br /> 12/19/2002 12 455 12 454 80 203 38 600 2 332 9 6999 48 639 Fourd system off Installed new hour meter <br /> startmp at 0 00 hour(old hr meter est 12455) <br /> 12!2612002 152 12 616 152 203 38 600 4 747 6 7033 53 386 <br />' 1/212003 316 12 770 154 203 38 600 4 513 1 7033 57 899 - <br /> 1/9/2003 481 1293.5 165 203 556 2 270 2 559 9 3724 60 459 <br /> 111612003 650 13 104 169 203 2 270 291 3 414 60 750 <br /> 112312003 818 13 272 158 203 2 270 2895 414 61 040 <br />' <br /> 1/30M03 984 13 438 166 201 2 270 2647 41 2 61 325 <br /> 216/2003 1 153 13 607 169 203 2 270 2898 412 61 614 <br /> 211112003 1 272 13 726 119 203 707 2 890 2331 470 61 847 Shut down system for OWS _ <br /> 2112/2003 1 272 13 726 0 2090 00 61 847 Restarted after OWS <br /> 2120/2003 1 463 13 917 191 203 2 890 4191 527 62 267 <br /> 2/25/2003 1 583 14 037 120 203 2 890 2633 527 62 530 Shut down system for maintenance— - <br /> T 316/2003 1 583 14 037 0 201 2 890 00 62 530 Restarted <br /> 3/1312003 1 745 14 199 162 204 2020 8 250 683 4 1012 63 213 <br /> 3120/2003 1 917 A 371 172 204 8 250 1 0826 1511 64 296 Shut down system for upgrade <br />' _ 4/4/2003 1 917 14 371 0 8 250 00 - 64 296 Restarted <br /> 411012003 2059 14 513 142 210 869 3 550 6580 Ill 2 64 954 <br /> 411712003 2 223 14 677 164 203 3 550 "96 658 65 404 <br /> 4124/2003 2 390 14 844 167 204 3 550 451 2 648 65 855 <br />' 5/1/2003 25,59 15 013 169 201 3 550 4544 645 66 309 <br /> 5/8/2003 2 721 15 175 162 204 3 550 4356 645 66 745 <br /> 511512003 2 884 15 338 163 201 3 550 4382 645 67 183 <br /> 5/2012003 3 011 15 465 127 201 3 550 3389 640 67 522 Shut down system for OWS <br /> 512112003 3 011 1546.5 0 3 550 00 - 67 522 Restarted <br /> 512212003 3 028 15 482 17 204 3 550 460 650 67 568 <br /> 512712003 3 148 15 602 120 201 2 370 9 700 6021 1204 68 170 <br /> 615/2003 3 363 15 817 215 204 9 700 1 5795 1763 69 749 <br /> 6/1212003 3 528 15 982 165 203 590 2 410 7604 1106 70 510 T <br />' 611912003 3690 16 144 162 201 2 410 2950 437 70 805 <br /> M612003 3 B70 16 324 180 203 2 410 3277 437 71 133 <br /> 71312003 4 027 16 481 157 201 2 410 2859 437 71 418 <br /> 71912003 4 145 16 599 118 201 445 1 820 1876 382 7.1606 <br />' 7117/2003 4 361 16 815 216 201 1 820 2955 328 71 901 <br /> 7124/2003 4 522 16 976 161 206 1 820 2230 332 72 125 <br /> 7!3112003 4 635 17 089 113 201 1 820 1565 332 72 281 System offfrom 7727 to 7130 due to power <br /> intanetlon restarted 7130 <br /> _81712003 4 803 17 257 168 206 1 820 2327 332 72 514 <br /> 811412003 4 954 17 408 151 204 516 2 110 2275 362 72 741 <br /> 6118!2003_ 4 961 17 415 7 204 2 110 113 386 72 753 Shut down system for OWS <br /> 612112003 4 961 17 415 0 2 110 00 72 753 Restarted <br /> 8/2712003 5 098 17 552 137 204 2 110 2205 386 72 973 <br /> 9/5/2003 5 101 17 555 3 206 2 110 49 388 72 978 Found system off restarted <br /> 911112003 5 237 17 691 136 210 633 2 590 2486 439 73 227 <br /> 911812003 5 400 17 854 163 203 2 590 326 0 48 0 73 553 <br /> • <br /> 9/1912003 5 410 17 864 10 - 2 590 197 472 73 572 Systemshutshut down overnight due to vandalism restarte _ <br /> 9!2512003 5 547 18 001 137 209 2 590 2774 q8 6 73 850 <br /> 101212003 5 710 18 164 163 204 2 590 3260 480 74 176 <br /> 1019/2003 5 873 18 327 163 206 2 590 3237 477 - 74499 <br /> 10/16/2003 6 036 18490 163 206 637 2 610 3265 48 1 74 826 <br /> 10/23/2003 6 190 18 644 154 206 2 610 3097 483 75 136 _ <br /> 0141ab3 Page 2 of 3 2/8/2405 <br />