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<br /> Groundwater Mon n4 Data and Analytical Results
<br /> Former Unocal Service Station 65098
<br /> 5606 Pacific Avenue
<br /> Stockton, California
<br /> Well IDI Date DTW GWE TPH(G) l3 T E X MTBE 1,2DCE
<br /> TOC (f1} (msl) (ppb) (p b) b) b} b) b) ;Pb)
<br /> MW-10 09/16/97 4420 -3244 ND ND ND ND ND ND 068
<br /> (cant) 09/15/98 3840 -2664 ND ND ND ND ND ND/ND 7 ND'
<br /> 12122!98 3312 -2136 ND ND ND ND ND ND/ND7 NO
<br /> 03/18/99 31 22 -1946 ND ND ND ND ND -- NO
<br /> 1177 06/17/99 3400 -2223 ND ND ND ND ND
<br /> I
<br /> MW-11 06/03/922 -- -- 620 150 70 26 68 -- 680
<br /> 09/30/92
<br /> -- -- 42,000 $ 800 6,200 1,600 4,400 56
<br /> 12/30/92 -- -- 84,000 20,000 27,000 2,400 14,000 -- 330
<br /> 1158 03/25/93 53 59 -4201 78,000 18,000 23,000 2,100 12,000 -- 190
<br /> 1122 06/28/93 57 73 -4651 83,000 18,000 24,000 2,100 13,000 -- 300
<br /> 09/29/93 59 11 4789 51,000 8,300 7,200 1,300 4,000 -- 77
<br /> 12/20/93 53 64 -4242 100,000 17,000 23,000 1,800 16,000 -- 280
<br /> 03/29/94 4965 -3843 87,000 14,000 17,000 1,700 9,700 -- 220
<br /> 06/28/94 55 12 -4390 86,000 15,000 20,000 1,700 11,000 -- 310
<br /> 09/14/94 57 77 -4655 88,000 12,000 18,000 2,200 11,000 -- 180
<br /> 12/06/94 5226 4104 75,000 11,000 17,000 1,500 11,000 -- --
<br /> 02/08/95 4932 -38 10 96,000 11,000 19,000 1,800 10,000 -- --
<br /> 06/21/95 5031 -3909 71,000 15,000 19,000 1,500 12,000 --
<br /> 09/19/95 5249 -4127 53,000 8,700 9,500 940 6,800 4 --
<br /> 12/19/95 4672 -35 50 32,000 6,500 2,400 920 4,100 -5 --
<br /> 03/11/96 4322 -3200 -- -- - -- -- --
<br /> 06119/96 4541 -34 19 36,000 5,900 1,000 800 4,500 150 --
<br /> 09/17/96 4752 -3630 36,000 8,300 4,500 1,100 5,600 390 --
<br /> 12/05/96 4258 -31 36 30,000 6,500 780 740 4,300 ND --
<br /> 09116/97 4449 -33 27 50,000 15,0(X) 1,100 720 7,700 2,400 --
<br /> 09/15/98 38 79 -27 57 24,000 6,900 430 360 2,500 °ND/W --
<br /> 12/22/98 3265 -21 43 20,000 5,600 230 330 1,500 'ND/ND' --
<br /> 03/18/99 3066 -1944 13,000 6,200 210 260 1,700 --
<br /> 06/17/99 3424 -2302 23,000 6,000 250 250 1,900 --
<br /> 5098 xis/#280046 2 As of 06117/99
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