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CAMBRIA <br /> TWO.Gronadwater Extraction Mass Removal Data,Shell-branded Service Station,2575 Country Club Boulevard,Stockton,California <br /> TPHg Benzene MTBE <br /> Site Flow Meter Cumulative Flow TPHg Period Cumulative Benzene Period Cumulative MTBE Period Cumulative <br /> Visit Reading Volume Rate Conc Removal Removal Conc Removal Removal Conc Removal Removal Active <br /> ( ldd/ ) ( al) (gal) ( m) (ppb) (pounds) (pounds) (ppb) (pounds) ( unds) (ppb) ( unds) (pounds) Wells Comments <br /> mm <br /> System shut down on 811102 for LEL <br /> meter repairs System operated on <br /> 8/27102 while samples were taken but <br /> shut down for further LEL meter repairs <br /> 08/27/02 903 408 903,388 1 22 NS 2809 3826 NS 3 986 5583 NS 2990 5378 I RW IA and calibration <br /> 09/24/02 927 730 927,710 060 31 000 629 3889 4 400 0 893 5673 3300-0 670 5445 I RW 1 A <br /> 10/07/02 953,205 953,185 136 23,000 489 3937 3,300 0 701 5743 36 000 765 5522 1 RW I A <br /> 10!22!02 1,013 230 1 013 210 278 33 000 1653 4103 3 500 1 753 59 18 28 000 1402 5662 RW IA <br /> 11/07/02 1,051409 1051,389 166 17 000 542 4157 2 800 0 892 6007 39 000 1242 5786 RW 1A Flow Meter Calibrated on t 117102 <br /> 11/21/02 1,053 840 1 053 820 012 26,000 053 4162 6 800 0 138 6021 58 000 118 5798 RW IA <br /> 12/04/02 1,115 243 1 115 223 328 25,000 1281 4290 3 100 1 588 6180 23 000 1178 5916 RW IA <br /> Carbon changeout performed on <br /> 12/23/02 System downtune <br /> 12/26/02 1,211,800 1,211,780 305 9 000 725 4363 <50 0 020 6192 24 000 1934 6109 RW]A approximately 12 hours <br /> Pump replaced on 1124103 System <br /> 0 V24103 1 227 750 1 227 730 038 4 900 065 4369 670 0 089 6191 10 000 133 6123 RW-1A downtime approximately 27 days <br /> I � <br /> 02/21/03 1305,160 1,305 140 192 17,000 1098 4479 2,400 1 550 6346 20 000 1292 6252 RW 1A I Flow meter calibrated on 2110103 <br /> i <br /> 03/05/03 45 970 1357,110 301 33 000 1431 4622 3 400 1 474 6493 28 000 1214 6373 RW 1 A Flow meter replaced on 2125!03 <br /> 03/25/03 87 275 1,398 415 143 37 000 1275 4750 51500 1 896 6683 47 000 1620 6535 RW 1 A <br /> 04/04/03 123 881 1435,021 254 29 000 886 4838 3 500 1 069 6790 33,000 1008 6636 RW IA <br /> 04/16/03 194 954 1,506,094 411 39 000 23 13 5070 4 800 2 847 7075 33 000 1957 6832 RW 1A <br /> Carbon changeout performed on 5/15103 <br /> 05/20/03 387 640 1698,790 194 26 000 4180 5488 2 900 4 663 7541 14 000 2251 7057 RW 1A System shut down on 5129/03 <br /> 4th Carbon vessel,added and system <br /> 07125/03 435 160 1 746 300 050 32 000 1269 5614 3 400 1 348 1616 7 800 309 71181 RW IA restarted on 7/25103 <br /> 08107103 534 570 1945110 531 7,000 581 5673 780 0 647 7740 3 300 274 711 5 RW IA <br /> 08/20/03 579,215 1,890,355 2.38 c5,000 093 5682 720 0 268 7767 4,900 183 7133 RW-1A <br /> Page 2 of 3 <br /> 0783 <br />