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TABLE 3 <br /> i <br /> Vapor Extraction Operating Data <br /> . Thrifty Oil Station # 172, Stockton, CA <br /> Hour Meter Inlet Hydr0oartFons Removed <br /> Hate Reading Duration ffomr Rate Lab.Concentrations Period Cumulative Comments <br /> {tire) {Mrs) del ppmv *t_ {ltas) (lbs) <br /> 4112101 1 200 #NIA 9 100 0 only 2 hrs run sampling for APCD <br /> 4126101 3 2 200 9 100 136 14 Startup System <br /> 5110101 333 330 200 7 873 34 764 5 413 7 5 427 Concentration is averaged from wells <br /> 5124101 672 339 206 34 764 8 947 3 14 375 <br /> 6121101 1 344 672 210 588 2 600 9 766 1 24 141 <br /> 715/01 1 671 327 211 2 600 6693 24 810 _ <br /> 7/12/01 1,840 169 210 2 600 3459 25 156 <br /> 7/16101 1960 120 210 245 1 080 1734 25 329 <br /> 7/19/01 2030 70 211 1 080 595 25 389 <br /> 7/26/01 2 147 117 266 1,080 1127 25 502 Found system off,restarted <br /> 8/2101 2 289 142 214 1,080 1377 25 639 <br /> 8/8/01 2 431 142 213 363 1 600 151 9 25 791 <br /> 8/14/01 2 580 149 216 1 600 191 3 25,982 Shutdown system for QWS <br /> 8/16/01 2 580 0 - 1,600 00 25 982 Restarted system <br /> 8/23/01 2 746 166 196 1 600 1947 26,177 <br /> 8/31/01 2 935 189 195 1 600 221 1 26 398 <br /> 9/6101 3 083 148 224 T 1 600 1855 26 584 <br /> 9112101 3 223 140 216 227 1 600 1843 26 768 <br /> 9/20101 3 417 194 198 1,600 2403 27 008 <br /> 9/27101 3 586 169 201 1 600 201 8 27 210 <br /> 1014/01 3 754 168 196 1,600 1996 27 410 <br /> 10/11/01 3 920 166 211 1 600 2021 27 612 <br /> 10/18/01 4 092 172 195 247 1,090 1756 27 788 <br /> 10/25/01 4 254 162 198 1 090 1298 27917 �_ <br /> 1112101 4 442 188 196 1 090 1510 28 068 Shut down system for QWS <br /> 1119101 4 446 4 196 1 090 32 28 071 Restarted system <br /> 11/14/01 4,558 112 199 90 400 616 28133 <br /> 11/21/01 4 720 162 196 400 479 28 181 w <br /> 11/29/01 4 914 194 197 400 570 28 238 <br /> 12/6101 5 059 145 199 400 430 28 281 <br /> 12/13/01 5 196 137 196 400 405 28 321 Found system off restarted <br /> 12/19/01 5 313 117 196 (ND) 2 5 (ND) 11 05 176 28 339 <br /> 12/27/01 5 387 74 196 11 05 06 28,340 Found system off restarted <br /> 1/3/02 5 549 162 196 1105 1 3 28 341 <br /> 1110/02 5 718 169 200 1105 14 28 342 Knockout switch shut down VES restarted <br /> 1118/02 5 831 113 210 1105 10 28 343 Knockout switch shut down VES restarted <br /> 1124102 5 954 123 201 139 616 296 28 373 <br /> 1131102 6 043 89 201 616 41 2 28 414 <br /> 216102 6,137 94 201 616 435 28 458 Knockout switch shut down VES restarted <br /> 217102 6 160 23 201 8 35 66 28,463 <br /> 2/14/02 6 324 164 202 35 43 28,468 4 <br /> 2/20102 6,467 143 201 35 38 28 471 System shut down for QWS <br /> 2/21/02 6 467 0 - 35 00 211471 Restarted VES after QWS <br /> 2/27/02 6 610 143 197 35 37 28 475 <br /> 317102 6 800 190 199 35 4 9 28 480 <br /> 3/14102— 6 970 170 201 23 103 88 28 489 T�-T- <br /> 014tab3 Page i of 2 418102 <br />