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TABLE 3 <br /> Vapor Extraction Operating Data <br /> Thrifty Oil Station# 172,Stockton, CA <br /> • Hour Meter Cumultive Hm since inlet Hydroaarb6ns Removed <br /> Date Reading Operation lastvialt Flow Rate Lab Concentrations Period Rate Cumulative Comments <br /> (hrs) (hrs) (hrs) (cfm) ppmv I -Q/L (lbs) (€bsltlay) (lbs) <br /> 4112!2001 —1 -0 200 #NIA 9 100 0 Only 2 hrs run sampling for APCO <br /> 4/26/2001 3 2 2 200 9 100 13 6 -1634- 14 Startup System <br /> 511012001 333 332 330 200 7 873 34 764 5 413 7 3937 5 427 Concentration is averaged from wells <br /> 512412001 672 671 339 206 34 764 8 947 3 6334 14 375 <br /> 6121!2001 1 344 1 343 672 210 588 2 600 9 766 1 3488 24 141 <br /> 715!2001 1 671 1 670 327 211 2 600 6693 491 24 810 <br /> 7112/2001 1 840 1 839 169 210 2 600 345 9 491 25 156 <br /> 7116!2001 1 960 1 959 120 210 245 1 080 1734 347 25 329 <br /> 711912001 2030 2029 70 211 1 080 595 204 25 389 <br /> 7126!2001 ---j-1-47 2 146 117 266 1 080 1127 231 25 502 Found system off restarted <br /> 802001 2289 2 288 142 214 1 080 1377 233 25 639 <br /> 8!812001 _ 2 431 2 430 _ 142 213 363 1 600 151 9 257 25 791 <br /> 8/1412001 2 580 2 579 149 216 1 600 191 3 308 25 982 Shut down system for QWS <br /> 8116/2001 2 580 2 579 0 1 600 00 25 982 Restarted system <br /> 8123/2001_ 2 746 2 745 166 196 1 600 1947 281 26 177 <br /> Wl12001 2 935 2 934 189 195 1 600 2211 281 26 398 <br /> 9/612001 3 083 3 082 148 224 1 600 1855 301 26 584 <br /> 911212001 3 223 3 222 140 216 227 1 600 1843 316 26 768 <br /> 9/20/2001 3 417 3 416 194 198 1 600 2403 297 27 008 <br /> 912712001 3 586 3 585 169 201 1 600 2018 287 27 210 <br /> 10/412001 37-54 3 753 168 196 1 600 199 6 285 27 410 <br /> 10111/2001 3 920 3 919 166 211 1 600 2021 292 27 612 <br /> 1011812001 4 092 4 091 172 195 247 1 090 1756 245 27 788 <br /> 10125/2001 4 254 4 253 162 198 1 090 1298 192 27 917 <br /> 1112!2001 4 442 4 441 188 196 1 090 151 0 193 28 068 Shut down system for QWS_ <br /> 1119/2001 4 446 4 445 4 196 1 090 32 192 28 071 Restarted system <br /> 11114/2001 4 558 4 557 112 199 90 400 616 132 28 133 <br /> 11/21/2001 4 720 4 719 162 196 400 479 7 1 28 181 <br /> 11/2912001 4 914 4 913 194 197 400 570 71 28 238 <br /> . X1213/201_ 5059 5058 _ 145 199 — 400 430 71 28281 ------ <br /> 12/1 3/2001 5 196 5 195 137 196 400 405 71 28 321 Found system off restarted <br /> 12/19/2001 5 313 5 312 117 196 (NDN 2 5 fNnI 11 05 176 36 28 339 <br /> 12/2712001 5 387 5 386 74 196 1105 06 02 28 340 Found system off restarted <br /> 1/3/2002 5 549 5 548 162 196 1105 1 3 02 28 341 <br /> 1/1012002 5 718 5 717 169 200 11 05 14 0 2 28 342 Knockout switch shut down VES restarted <br /> 1118!2002 5 831 5 830 113 210 11 05 10 02 28 343 Knockout switch shut down VES restarted <br /> 1/2412002 5 954 5 953 123 201 139 616 296 58 —28373 <br /> 1/31/2002 6 043 6 042 89 201 616 41 2 11 1 28 414 <br /> 2/612002 6 137 6 136 94 201 616 435 11 1 28 458 Knockout switch shut dawn VES rastaned <br /> 2A12002 6 160 6 159 23 201 8 35 56 59 28 463 <br /> 2/14/2002 6 324 6 323 164 202 35 43 06 28 468 <br /> 2120!2002 6 467 6 466 143 201 35 38 06 28 471 System shut down for QWS <br /> 2!2112002 6 467 6 466 0 35 00 28 471 Restarted VES after QWS <br /> 212712002 6 610 6 609 143 197 35 37 06 28 475 <br /> 3/7/2002 6 800 6 799 190 199 35 49 06 28 480 <br /> 311412002 6 970 6 969 170 201 23 103 88 1 2 28 489 <br /> 3/21/2002 7 138 7 137 168 201 103 130 1 9 28 502 <br /> 3!2812002 7 304 7 303 166 203 508 2 250 1475 21 3 28 649 <br /> 414/2002 7 469 7 468 165 206 2 250 2839 41 3 28 933 <br /> 4111/2002 7 637 7 636 168 205 2 250 2905 41 5 29 224 <br /> 4118/2002 7 802 7 801 165 202 (Nni 2 5 (NON 11 05 1420 207 29 366 <br /> 4!25!2002 7 969 7 968 167 202 11 05 14 02 29 367 System shut down(technician on vacation) <br /> 51912002 7 969 7 968 0 - 11 05 00 - 29 367 Restarted <br /> 5/23/2002 8 014 8 013 45 211 11 05 04 02 29 368 Knockout swtah shut down VES restarted <br /> 5/30/2002 8 182 8 181 168 212 MM 25 mni 11 05 1 5 02 29 369 <br /> 61612002 8 348 8 347 166 213 1105 1 5 02 29 370 <br /> 6/13/2002 8 517 8 516 169 236 1105 16 02 29 372 <br /> 6/2012002 8 683 8 682 166 216 1 120 4 960 3487 504 29 721 <br /> 612712002 8 854 8 853 171 213 4 960 6804 955 30 401 <br /> 7/312002 8 996 8 995 142 212 4 960 5598 946 30 961 <br /> 711012002_ 9 166 9 165 170 213 4%0 6701 946 31 631 <br /> 7118/2002 9 350 9 349 184 203 1060 4 670 6892 899 32 320 <br /> • `712512002 _ 9 523 __9522 _ 173 213 4 670 6285 872 32 949 <br /> 8/1/2002 9687 9 686 164 203 4 670 5958 872 33 545 <br /> 818!2002_ 9 847 9 846 1 fi0 203 4 670 567 3 85 1 34 112 <br /> 811312002 9 963 9 962 116 203 4 670 411 3 851 34 523 ISystern shutdown for QWS <br /> 811412002 9 963 9 962 0 4 670 00 34 523 Restarted <br /> 811512002 9 976 9 975 13 201 1 712 2 910 370 684 —345601 <br /> 014tab3 Page f of 4 1/12/2006 <br />