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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Service Station No 11194 <br /> 2375 Tracy Blvd, Tracy CA <br /> Top of Depth to Water Level Ethyl- Total <br /> Well Date P/ Casing Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes NItBE DO <br /> Number Sampled NP Elevation (feet bgs) (feet msl) (gg1L) (pg1L) (pg1L) (pg1L) (pg1L) (pg1L) (pglL) (mg/L) Comments <br /> MW-8 3/29/1996 — 2566 573 1993 550 — 24 ND<1 59 ND<1 13 34 <br /> 7/1/1996 -- 2566 629 1937 — -- — — - — -- <br /> 10/15/1996 — 2566 650 1916 <br /> 4/16/1997 - 2566 513 2053 -- — - — -- — <br /> 10/1511997 2566 650 1916 — -- -- — <br /> 3/1711998 — 2566 603 1963 - - - — -- — <br /> 1/6/1999 — 2566 659 1907 1,000 — 200 19 25 110 ND<1 0 — <br /> 9/13/1999 2566 642 1924 150 - ND<1 0 ND<1 0 17 ND<1 0 26 -- <br /> 1/19/2000 - 2566 597 1969 460 -- ND<0 5 ND<0 5 38 26 34 — <br /> 4/12/2000 -- 2566 647 1919 280 ND<0 5 ND<0 5 19 24 22 — <br /> 7/22/2000 2566 640 1926 410 - ND<0 5 N0<0 5 42 28 35 - <br /> 10/26/2000 - 2566 640 1926 60 — ND<0 5 ND<0 5 ND<0 5 ND<0 5 52 -- <br /> 1l1712001 - 2566 — -- — — -- — -- — -- <br /> 4/12)2001 — 2566 604 1962 280 -- 215 08 728 351 135 - <br /> 5/23/2001 — 2566 618 1948 76 — ND<0 5 ND<0 5 ND<0 5 ND<i 5JND<2 <br /> 7/31/2001 — 2566 640 1926 100 — ND<D 5 ND<0 5 ND<0 5 ND<l 5 -- <br /> 10/30/2001 — 2566 652 1914 ND<50 — ND<0 5 ND<0 5 ND<0 5 ND<1 5 - <br /> 1/29/2002 — 2566 582 1984 ND<50 -- 0 519 ND<0 5 ND<0 5 ND<1 0 - <br /> 4/30/2002 — 2566 613 1953 ND<250 — ND<2 5 ND<2 5 ND<2 5 ND<5 0 - <br /> 7/30/2002 — 2566 - -- — -- -- - - — - Area Under Construction- <br /> Not Sampled <br /> 10/3112002 P 2566 623 19 43 ND<50 N0<0 5 ND<0 5 ND<0 5 ND<0 501/3012003 P 2566 652 1914 <50 UJ — <0 50 UJ <0 50 <0 50 UJ <0 50 UJ — <br /> UJ <br /> 04/30/2003 P 2566 579 1987 <50 — <0 50 <0 50 <0 50 <0 50 58 -- <br /> 07/30/2003 P 2566 6 33 1933 <50 <0 50 <0 50 <0 50 <0 50 37 — <br /> 10/29/2003 P 2566 638 1928 <50 -- <0 50 <0 50 <0 50 <0 50 1 7 -- <br /> 01/2612004 P 2566 604 1962 <50 -- <0 50 <0 50 <0 50 <0 50 1 S <br /> TPHg=Total petroleum hydrocarbons as gasoline(reported as GRO-gasoline range organics in analytical report) <br /> TPHd=Total petroleum hydrocarbons as diesel(reported as DRO-diesel range organics in the analytical report) <br /> MtBE=Methyl tert-butyl ether <br /> DO=Dissolved oxygen <br /> bgs=below ground surface <br /> mst=mean sea level <br /> pg/L=micrograms per liter <br /> age 23 of 24 <br /> Report Date April 28,2004 P <br />