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Tat' <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 /> WellPf ProductThi GW GRO Benzene Toluene Xylenes MTBE DO <br /> No Date Elevation Wafer benzene pH CommentsNP (ft MSL) (ft BGS) ckness Elev (pg/L) (pgfL) (pS1L) WWI-) ",L) (-911-)(feet) (ft MSL) (p9n) <br /> MW 1 09/06/2004 28909 10465 18444 <br /> 1212112004 NP 10425 18484 <br /> 03114/2005 10429 18480 Sheen Not Sampled <br /> 06121/2005 10473 18439 Not Sampled Free Product Present <br /> 09/19/2005 10470 18439 Not Sampled <br /> 12119/2005 10435 18474 Not Sampled Free Product Present <br /> 03128/2006 10420 18489 Not Sampled <br /> 06!2612006 P 10408 18501 110,000 28,000 3,800 3,900 21,000 <120 070 81 <br /> MW-2 09106/2004 - 28796 5984 22812 - - - - - Well inaccessible <br /> 12121/2004 P 6013 22783 <100 <0 50 <0 50 <0 50 <0 50 <0 50 34 80 <br /> 03/1412005 P 5994 22802 16 81 <br /> 06121/2005 P 5585 23211 <50 UJ <0 50 <0 50 <0 50 24 <0 50 60 8 2 <br /> 09/1912005 P 6000 22796 <50 <0 50 <0 50 <0 50 <0 50 <0 50 24 7 5 <br /> 12/1912005 P 6011 22785 <50 <0 50 <0 50 <0 50 <0 50 <0 50 61 72 <br /> 0312=006 P 6014 22782 <50 <0 50 <0 50 <0 50 <0 50 <0 50 34 75 <br /> 06126/2006 P 5988 22808 <50 <0 SO <0 50 <0 50 <0 50 <0 50 13 8 2 <br /> MW-3 09/06/2004 28793 9214 19579 - - Well inaccessible <br /> 12/21/2004 NP 9218 19575 <br /> 03/14/2005 Not Sampled Insuffiuent Water <br /> 06/2112005 <br /> - - - - Not Sampled <br /> 09/19/2005 91 55 19638 Not Sampled <br /> 12/19/2005 9160 19633 Not Sampled <br /> 03/2812006 91 55 19638 Not Sampled <br /> 06/2612006 9160 19633 Not Sampled <br /> MVVA 09106/2004 28887 64 95 22392 Well inaccessVe <br /> 12121/2004 NP 64 95 22392 <br /> 03/1412005 - - <br /> - Not Sampled Dry <br /> 06/21/2005 Not Sampled Insufficient Water <br /> 09/1912005 P 5538 23349 140 000 11 000 17 000 1 600 18 000 <500 10 7 0 <br /> 1 2/1 912 005 P 6215 22672 2 900 000, 12 000 50 000 18 000 390 000 J <500 13 66 <br /> 03/28/2006 P 5650 23237 280 000 3 800 6200 760 42 000 <500 21 66 <br /> 06/2612006 P 5100 23787 940,000 7,200 6,800 22,000 130,000 <500 2 5 77 <br /> MW-5 09/06/2004 - 28869 9510 19359 - - - - Well inaccessible <br /> 12J21/2004 NP 9510 19359 - - <br /> 03114l2005 <br /> Not Sampled <br /> 06/21/2005 <br /> Not Sampled Dry <br /> 09/1912005 9514 19355 Not Sampled <br /> 12/19/2005 9514 19355 Not Sampled <br /> 0312812006 9514 19355 Not Sampled <br /> 06/2612006 9514 19355 1 Not Sampled <br /> 6100-Table 1 Page 1 of 8 SECOR <br />