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� 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 6100 <br /> 25775 S Patterson Pas,Tracy, CA <br /> TOC Depth to Measured calc Ethyl <br /> P! ProductThi GW GRO Benzene Toluene Xylenes MTBE DO <br /> Well No Date Elevation Water benzene pH Comments <br /> NP (ft MSL) (ft BGS) ckness Elev (pg1L) (Pg1L) (pg1L) (P9&) (pg1L) (pg1L) (mgfL) <br /> (feet) (ft MSL) <br /> VW 5 09/06/2004 - 29011 5400 23611 - - - - Well inaccessible <br /> 12/21/2004 P 5025 23986 57 J 050 <0 50 <0 50 053 <0 50 32 80 <br /> 03/1412005 P 3315 25696 - - - - 060 79 <br /> 0612112005 P 3665 25346 <50 UJ <0 50 UJ <0 50 UJ <0 50 UJ <0 50 UJ 12 J 87 84 <br /> 09/1912005 P 5290 23721 <250 94 94 <2 5 48 <2 5 1 5 74 <br /> 12/19/2005 P 5190 23821 210 0 64 J <0 50 <0 50 067 053 1 8 71 <br /> 03/2612006 P 4403 24608 <50 <0 50 <0 50 <0 50 050 <0 50 86 76 <br /> 0612612006 P 4823 24188 97 060 <0 50 068 39 <0 50 060 92 <br /> VW-6 09/0612004 - 28914 3672 25242 - - - - Well maccessVe <br /> 12!2112004 P 3405 25509 8 400 J 5 000 <250 <250 <250 <250 31 75 <br /> 0 311 412 00 5 P 2885 26029 - - 040 75 <br /> 0612112005 - - - - Well maocessible Inaccessible,Not Sampled <br /> 09/19/2005 P 3560 25354 <5 000 3 700 <50 <50 64 170 36 74 <br /> 12/19/2005 P 3945 24969 <5 000 330 J <50 <50 73 83 14 72 <br /> 03/28/2006 - - - - Commuter parked on well <br /> 0612612006 P U61 25453 3,100 3,000 51 96 <5 0 160 20 83 <br /> VW-7 0910612004 28947 7460 21487 - - - - - Well inaccessible <br /> 12!2112004 7452 21495 - <br /> 03l14l2005 - Not Sampled Dry <br /> 06/2112005 _ <br /> - Not Sampled Dry <br /> 09/19/2005 7470 21477 Not sampled <br /> 12119!2005 7470 21477 Not Sampled <br /> 03128!2006 7440 21507 Not Sampled <br /> 06!2612006 7470 21477 Not Sampled <br /> VW-8 09/06/2004 28967 8247 20720 Well inaccessible <br /> 12/21/2004 8242 20725 <br /> 03/14/2005 - Wel;inaccessible Not Sampled Dry <br /> 06/21/2005 - <br /> - - - Not Sampled Dry <br /> 09119/2005 8260 20707 Not sampled <br /> 12/19/2005 8170 20797 Not Sampled <br /> 03128/2006 8169 20798 Not Sampled <br /> 06/2612006 8190 - 20777 - Not Sampled <br /> VW-9 09/06/2004 29092 6456 22636 Well inaccessible <br /> 12/21/2004 6465 22627 Well inaccessible <br /> 03/14/2005 - _ Well inaccessible Not Sampled Dry <br /> 06/21/2005 - _ <br /> Not Sampled Dry <br /> 09/19/2005 6465 22627 Not sampled <br /> 12/19/2005 64 45 22647 Not Sampled <br /> 0312812006 6165 22927 Not Sampled <br /> 06126/2006 6165 22927 - Not Sampled <br /> 6100-Table 1 Page 5 of 8 SECOR <br />