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<br /> TAN 1
<br /> Groundwater Monitoring Data Page 1 of 4
<br /> ARCO Service Station No. 2186
<br /> 3212 North California Street
<br /> Stockton, California
<br /> Well Elevation of Static Water[1] Top of Elevation of Groundwater Total
<br /> Sample No. Date Top of Casing Level Screen [21 Groundwater Flow Direction TPHG Benzene Toluene Eth lbenzene Xylenes MTBE 3 Observations
<br /> MW-1 09/25/95 14.65 58.05 45.60 -43.40 SE 20,000 780 2,000 690 4,100 No FP,No S
<br /> MW-1 10/23/95 14.65 57.89 -43.24 --- 20,000 590 1,100 600 '3,600 No FP,No S
<br /> MW-1 12/22/95 14.65 53.78 -39.13 E 730 3.5 <1 [2] 13 13 No FP,No S
<br /> MW-1 02/16/96 14.65 50.13 -35.48 E 1,200 22 <1 [2] 51 24 No FP,No S
<br /> MW-1 05/23/96 14.65 45.35 -30.70 E 760 9 1 22 5 <5 No FP,No S
<br /> MW-1 09/19196 14.65 53.63 -38.98 NE 10,000 480 570 520 700 <50* No FP,No S
<br /> MW-1 11/27/96 14.65 50.77 -36.12 SE 19,000 700 1,800 820 2,200 <100* No FP,No S
<br /> MW-1 03/21/97 14.65 42.06 -27.41 SE 5,300 260 210 200 440 <30* No FP,No S
<br /> MW-1 05/22/97 14.65 43.89 -29.24 E-NE 25,000 920 1,900 1,400 3,500 <120* No FP,No S
<br /> MW-1 08/20/97 14.65 49.83 -35.18 E-NE 31,000 1,000 2,800 1,300 4,000 <500** No FP,No S
<br /> MW-1 11/20/97 14.65 49.07 -34.42 E 24,000 830 1,900 1,100 3,600 <1,000** No FP,No S
<br /> MW-1 02/17/98 14.65 44.32 -29.67 E-SE 19,000 680 990 980 3,200 <100** No FP,No S
<br /> MW-1 06/24/98 14.65 35.79 -21.14 E 505 27.5 Q.5 6,02 9.73 <25 No FP,No S
<br /> MW-1 09/21/98 14:65 39.35 -24.70 E-NE 18,900 792 1,410 1,130 3,690 <125 No FP,No S
<br /> MW-1 12/14/98 14.65 37.34 -22.69 E-NE 13,800 613 449 896 2,800 <100 No FP,No S
<br /> MW-1(Discreet) 12/14/98 14.65 37.34 -22.69 E-NE 7,170 424 16.1 527 848 <100 No FP,No S
<br /> MW-1 03/31/99 14.65 34.14 -19.49 N-NE 81.7 4.32 <0.5 <0.5 <0.5 <5 No FP,No S
<br /> MW-1 06/11/99 14.65 34.22 -19.57 E-NE 7,310 397 162 543 1,500 <50 No FP,No S
<br /> MW-1 09/10/99 14.65 38.41 -23.76 E-NE 22,800 941 1,180 1,410 4,450 2,590 No FP,No S
<br /> MW-2 09/25/95 15.49 59.01 55.50 -43.52 SE <50 <0.5 <0.5 <0.5 2.0 No FP,No S
<br /> MW-2 10/23/95 15.49 NM NM --- NA NA NA NA NA NM
<br /> MW-2 12/22/95 15.49 54.76 -39.27 E <50 <0.5 <0.5 <0.5 <0.5 No FP,No S
<br /> MW-2 02/16/96 15.49 51.16 -35.67 E <50 <0.5 <0.5 <0.5 <0.5 No FP,No S
<br /> MW-2 05/23/96 15.49 46.28 -30.79 E <50 <0.5 <0.5 <0.5 <0.5 No FP,No S
<br /> MW-2 09/19196 15.49 54.53 -39.04 NE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S
<br /> MW-2 11/27/96 15.49 51.67 -36.18 SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S
<br /> MW-2 03/21/97 15.49 43.16 -27.67 SE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No S
<br /> MW-2 05/22/97 15.49 44.81 -29.32 E-NE <50 <0.5 <0.5 <0.5 <0.5 <3 No FP,No.S
<br /> CP1C:W2CHNEIARCo121861QTRLY12186g399.xls
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