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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TOC Depth to Water Level Ethyl- Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (ug1L) (pg/L) (pg/L) (pg/L) (jig1l.) (ug1L) (pg/L) (mg/L) Comments <br /> MW-2 10/15/1996 — 2633 734 18 99 ND<250 - ND<2 5 ND<5 0 ND<5 0 ND<5 0 14,000 4 <br /> 4/16/1997 -- 2633 598 2035 180 ND<0 5 ND<1 0 N0<1 0 ND<1 0 57 42 <br /> 10/15/1997 - — -- -- ND<50 ND<0 5 ND<i 0 ND<l 0 ND<1 0 120 — QC-1 <br /> 10/15/1997 — 2633 608 2025 ND<50 - ND<0 5 ND<1 0 ND<1 0 ND<1 0 120 54 <br /> 3/17/1998 -- 2633 5 57 2076 170 - ND<0 5 ND<1 0 ND<1 0 ND<1 0 180 61 <br /> 1/6/1999 - 2633 — -- -- — - — _ -- <br /> 9/13/1999 -- 2633 561 2072 480 35 73 ND<5 0 ND<5 0 99 000191,000 -- <br /> 1l1912000 2633 561 2072 800 — 11 ND<0 5 ND<0 5 12 84,000 -- <br /> 4/12/2000 -- 2633 613 2020 1,600 42 ND<0 5 ND<0 5 ND<0 5 11,000 - <br /> 7122/2000 — 2633 598 20 35 3,800 — 63 1 0 86 0 63 7 2 90,000 -- <br /> 10/26/2000 — 2633 501 21 32 1,100 — 09 ND<0 5 ND<0 5 069 3,400 — <br /> 1/17/2001 — 2633 514 21 19 18,000 -- 109 ND<5 0 ND<5 0 ND<5 0 28,200 -- <br /> 4/12/2001 -- 2633 581 2052 700 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 946 — <br /> 5/23/2001 -- 2633 581 2052 1,100 — 0 594 ND<0 5 ND<0 5 ND<1 5 1,330 — <br /> 7/31/2001 -- 2633 606 2027 1,600 -- 203 ND<5 0 ND<5 0 ND<15 1,490 — <br /> 10/30/2001 -- 2633 612 2021 420 -- 11 3 575 462 232 363 — <br /> 1/29/2002 - 2633 557 2076 610 — 865 ND<0 5 ND<0 5 ND<i 0 780 — <br /> 4/30/2002 - 2633 5 68 2065 2,600 -- 394 ND<O 5 506 811 2,140 — <br /> 7/30/2002 P 2633 491 2142 ND<500 - ND<0 5 ND<0 5 ND<0 5 ND<1 0 58 6 10/31/2002 P 2633 576 2057 ND<50 -- 27 13 ND<0 5 ND<0 5 13 -- <br /> 01/30/2003 P 2633 576 2057 150 096 <050 <0 50 <0 50 79 — <br /> 04/30/2003 P 2633 562 2071 67 -- 88 <0 50 <0 50 <0 50 290 -- <br /> 07/30/2003 P 26.33 564 2069 480 62 13 1 27 15 65 — <br /> 10/29/2003 P 2633 603 2030 <50 - <050 <0 50 <0 50 <0 50 0 55 <br /> 01/26/2004 P 2633 584 2049 <50 — <050 <0 50 <0 50 <0 50 91 <br /> 04/28/2004 P 2633 5 84 2049 <50 — <050 <0 50 <0 50 <0 50 <0 50 -- Water Level data from <br /> 4127104 <br /> 07/30/2004 P 2633 609 2024 130 - 54 <0 50 <0 50 <0 50 <0 50 -- <br /> 10/28/2004 — 26 33 534 2099 -- - — — -- -- — -- Sampled Annually 3rd <br /> Quarter <br /> 01/31/2005 -- 2633 501 2132 -- -- — -- — -- -- -- Sampled Annually 3rd <br /> Quarter <br /> 04/29/2005 — 2633 573 2060 -- -- — -- - — _ — Sampled Annually 3rd <br /> Quarter <br /> Report Date October 13,2005 Page 14 of 28 <br />