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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 TPI-Ig TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (ug/L) (pg/L) (pglL) (pglL) (pg/L) (pg/L) (mg/L) Comments <br /> MW-6 5/23/2001 - 25 63 480 <br /> 20 83 17,000 -- 259 11 7 515 27 2 159 <br /> 7/31/2001 2563 472 2091 14,000 - 186 4 58 346 9 42 301 <br /> 10/30/2001 - 25 63 4 79 20 84 13,000 -- 202 ND<25 100 ND<75 165 ged <br /> 1/29/2002 2563 425 21 3812000 -- 256 836 145269344 <br /> 4130!2002 25 63 4 61 21 02 8 800 116 ND<1 55 548 ND<25 166 <br /> 7130l2D02 -- 2563 - -- - - Over-NoE Sampled <br /> 10/31/2002 P 2563 490 2073 44,000 270 1,200 510 2,100 1,800 <br /> 01/30/2003 P 25 63 4 69 20 94 $500 J 23 J <5 D UJ 65 J <5 0 UJ 62 J _ <br /> 04/3012003 P 25 63 454 21 09 4,900 -- 35 <10 44 <10 26 <br /> 07/30/2003 P 25 63 518 20 45 22,000 -- <25 <25 <25 <25 <25 -- <br /> 10/29/2003 P 2563 499 2064 4,700 -- 14 <2 5 23 <25 <25 <br /> 01/26/2004 P 2563 450 21 13 7 400 - 10 <10 UJ 35 <10 <10 _ <br /> 04/28/2004 P 2563 4 94 20 fig 11,000 -- 51 058 11 <0 50 23 - Water Level data from <br /> 4127/04 <br /> 07/30/2004 P 2563 528 2035 5,500 - <25 <25 <25 <25 28 J - <br /> 10/28/2Q04 P 2563 5-0-0--2063 9,800 J <12 <12 <12 <12 65--- <br /> 01/31/2005 P 2563 422 2141 3,900 -- 30 <2 5 47 <2 5 52 _ <br /> 04/29/2005 P 2563 464 -F-2099 2,500 -- 12 <10 <10 15 <10 <br /> 07!28!2005 P 25 63 5 00 20 63 1,600 -- <1 0 <1 0 <1 0 <i 0 1 9 <br /> MW-7 2/9119$7 -- -- -- 6,300 -- 420 92 -- 1,200 - <br /> 9/21/1987 - - - -- <br /> 140<50 - ND<0 5 ND<0 5 -- 0<0 5 -- .- <br /> 10/20/1987 - -- -- -- 65 - ND<0 5 ND<p 5 _ 007 <br /> 11/20/1987 -- -- -- ND<50 - ND<0 5 ND<0 5 -- ND<0 5 <br /> 3/13/1988 -- --2-65-0— 675 19 75 <br /> 3/23/1988 -- 2650 696 1954 57 - 5 9 ND<0 5 <br /> 6/7/1988 - 2650 675 19 75 -- <br /> 10/18119$8 -- 26 50 7 10 19 40 4D<50 ND<05 ND<0 5 ND<0 5 ND<0 5 - <br /> 2115l1990 -- --2-6-5-0 580 20 70 3,400 -- 94 73 70 170 <br /> 4/26/1990 -- 2650 663 1987 - - _ -- <br /> 7/12/1990 26 50 666 1984 ND<50 -- ND<0 3 ND<0 3 ND<0 3 ND<0 3 _ <br /> $12711990 -- 2650 686 1964 _ _ _. <br /> 11/2/1990 2650 1 703 1947 <br /> 11/5/1990 -- 2650 704 1946 ND<50 - ND<0 3 ND<0 3 N11 l<0 3 ND<0 3 - <br /> Report Date October 13, 2005 Page 23 of 28 <br />