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<br /> • Groundwater Monitoring a and Analytical Results • +
<br /> Former Unocal Service Station#0187
<br /> 437 East Miner Avenue Y
<br /> Stockton, California
<br /> Product
<br /> Well ID/ pate DTW GWE Thickness TP11(G) B T E MTBE
<br /> TOC* (ft) (ft) (ft) (ppb) (ppb) {ppb) (ppb) (ppb) (ppb)
<br /> U-2 05/01/97 31 81 -20 32 0 00 58 0 89 <0 5 <05 <05 <50
<br /> (cont) 08/04/97 32 10 -20 61 000 782 088 <05 <05 <05 <5 0
<br /> 11/03/97 33 02 -2153 0 00 <50 <05 <05 <05 <05 <5 0
<br /> 02/13/98 30 41 -1892 0 00 <50 <0 50 <0 50 <0 50 <0 50 <25
<br /> 03/09/98 2949 -18 00 0 00 <50 <0 50 <0 50 <0 50 <0 50 <2 5/<2 04
<br /> 05/26/98 27 08 -15 59 0 00 <50 <0 50 <0 50 <0 50 <0 50 <25
<br /> 08/17/98 26 36 -14 87 0 00 577 0 66 0 69 <0 50 1 1 <2 5
<br /> 11/10/98 26 45 -14 96 0 00 507 <0 50 <0 50 <0 50 <0 50 <25
<br /> 02/05/99 25 92 -14 43 0 00 <50 <0 50 <0 50 <0 50 <0 50 --
<br /> U-3
<br /> 1125 08/19/94 47 12 -35 87 0 00 51,000 9,700 1,300 2,100 5,600
<br /> 11/17/94 4748 -36 23 0 00 42,000 9,600 1,800 2,000 4,600
<br /> 02/17/95 45 57 -34 32 0 00 47,000 9,100 2,100 1,600 5,300
<br /> 05/09/95 42 82 -31 57 0 00 53,000 7,600 3,900 2,600 11,000 --
<br /> 08/09/95 41 15 -29 90 0 00 38,000 4,800 1,900 2,100 9,600
<br /> I --
<br /> 11/08/95 41 03 -2978 0 00 28,000 2,400 1,400 1,900 4,900
<br /> 02/06/96 39 42 -28 17 0 00 36,000 3,700 1,400 1,900 8,000 _ 3
<br /> 05/07/96 36 69 -25 44 0 00 36,000 4,600 1,800 2,400 10,000 - 3
<br /> 08/06/96 3647 -25 22 0 00 43,000 2,600 1,000 1,700 7,000 --
<br /> 11/05196 3605 -24 80 0 00 43,000 2,400 1,000 1,600 6,300 --
<br /> 02/03/97 3244 -21 19 0 00 39,000 2,100 1,100 1,500 6,100 <500
<br /> 05/01/97 3173 -20 48 0 00 19,000 1,100 660 1,200 5,000 260
<br /> 08/04/97 32 02 -20 77 0 00 810 35 21 67 15 <50
<br /> 11/03/97 33 00 -21 75 0 00 25,000 960 580 1,500 5,100 <130
<br /> 02/13/98 30 22 -18 97 0 00 41,000 1,700 820 1,900 6,300 <500
<br /> 03/09/98 2940 -18 15 000 28,000 1,300 600 1,200 4,500 <250/<1004
<br /> 05/26/98 26 97 -15 72 0 00 2,300 46 31 56 110 <2 5
<br /> 08/17/98 26 41 -15 16 0 00 17,000 780 110 770 3,300 <50
<br /> 11/10/98 26 48 -15 23 0 00 29,0007 5,200 300 1,300 2,000 <50
<br /> 02/05/99 25 96 -14 71 0 00 27,000 4,200 2,200 300 3,800 --
<br /> (D) 02/05/99 - - -- 28,000 4,300 2,300 1,000 4,000 --
<br /> 0187 x1s/#280045 2 As of 02/05/99
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