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1 Table 4 Groundwater Elevation and Analytical Data ARCO Station#548 1612 West Hammer Lane Stockton,California Calc. TOC Depth to GW TOTAL P! Elevation Water Elev. TPHg BENZENE TOLUENE ETHYLBENZENE XYLENES MTBE DO Well No. Semolina Date NP (ft MSL) (ft BGS) (ft MSL) (ug1L) (Ng1L) (Pg1L) (PglL) (Ng1L) (y91L) (mg1L) Comments t MW-5 2!1511995 9.37 40.28 -30.91 6,700 420 1 87 620 1,100 NA No FP,No S No O,[60] t�Z MW-5 5!12!1995 9.37 38.95 -29.58 5,000 560 110 400 600 NA No FP No S,Yes O 1611 ('L MW-5 8!2911995 9.37 40.07 30.70 5,700 410 150 310 590 NA No FP,No S.No O,[60] `t MW-5 121414995 9.37 38.63 -29.26 1,200 55 11 83 92 NA No FP No S Yes O,lU _.__ (J- MW-5 2011996 9.37 36.66 -27.29 270 7.6 1.5 11 9-8 NA No FP No S Yes O - MW-5 5/14 1996 9.37 34.15 -24.78 5,700 420 180 380 610 34 No FP,No S.No O_60 MW-5 F12911996_ 9.31 35.99 -26.62 3600 510 90 71n_ 970 39 No FP No S No O L60o__ - L/• MW-5 11/20/1996 9.37 34.83 -255.46 4 500 210 93 310 510 '<50 No FP No S,No_O,,[60] MW-5 3/1911997 9.37 31.12 -21.75 6,200 420 68 360 590 "'<60 No FP,No S,No O,[60] MW-5 52711997 9.37 31.19 -21.82 4,500 490 59 230 350 97 No FP No S Yes O MW-5 8!12!1997 9.37 32.76 -23.39 3600 -260L-- 12 260 350 110 No FP,No 5 No 0,.]601 MW-5 11!18!1997 9.37 32.49 -23.12 1,300 180 12 16 88 '<25 No FP,No S,Yes O,[61] MW-5 2/1611998 9.37 29.14 -19.77 1 630 110 <2.5 22 8.3 44 No FP No S,Yes O,(61.51 MW-5 62311998 P 9.37 26.61 -17.24 702 50.4 7.91 33-3 36.6 47.3 No FP,No S,No O, 60 MW-5 92911998 P 9.37 28.39 -19.02 1,790 242 <5 1 121 135 145 No FP,No S,No O,[60] MW-5 12130/1998 P 9.37 26.22 16.85 275 19 <0.5 6.05 0.629 38.2 No FP,No S,No O,,[60] MW-5 3!3111999 P 9.37 24.71 15.34 93 8.42 <0.5 <0.5 0.835 15.7 No FP,No S,No O,[60] MW-5 6/2811999 P 9.37 25.88 -16.51 I 175 22.4 <0.5 1.15 2.03 32.8 No FP No S No O.[60] - -6- 9!10!1999 P 9.37 27.87 16.50 614 _41.9 <0.5 10.9 29.3 93.6 No FP No 5,No O,[60� MW-5 12!13!1999 P 9.37 26.92 -17.55 <50 <0.5 <0.5 <0.5 50.5 7.52 No FP,No S,No 0,[60] MW-5 I 312812000 P 9.37 23.74 -14.37 <50 <0.5 <0.5 <0.5 <0.5 <2.5 I No FP No S No O [60] MW-5 612612000 P 9.37 24.71 -15.34 106 1.99 <0.5 <0.5 <0.5 42[2] No FP,No S,No O,[61] MW-5 928!2000 P 9.37 27.24 -17.87 137 <0.5 <0.5 <0.5 <0.5 47.4 No FP,No S,No O MW-5 12!18!2000 P 9.37 25.87 -16.50 <50 <0.5 <0.5 <0.5 <0.5 <212 No FP,No 5 No 0 MW-5 3!1412001 P 9.37 24.48 -15.11 <50 40.5 <0.5 <0.5 <0.5 <LO Ne FP,No S,Yes O MW-5 61192001 P 9.37 25.43 -16.06 <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP No S,Yes O MW-5 9111!2001 P 9.37 27.95 -18.58 <50 <0.5 <0.5 <0.5 <0.5 <2[2] No FP No S Yes O MW-5 1211312001 P 9.37 27.20 -17.83 <50 <0.50 <0.50 <0.50 I <0.50 <0.500 No FP,No S,Yes O MW-5 3!1212002 P 9.37 25.53 -16.16 <50 <0.50 <0.50 <0,50 <0.50 0.98[21 No FP No S,Yes O MW-5 6!1712002 P 9.37 2653 -17.16 <50 <0.50 <0_50 <0_50 <0.50 <0.502 No FP No, Yes MW-5 91912002 P 9.37 29.38 -20.01 <50 <0.5 <0.5 <0.5 <0.5 <0.5 No FP,No 5,Yes O MW-5 121412002 P 9.37 29.14 -19.77 I <50 <0.5 0.62 <0 5 3.4 <0.5 I No FP,No S,Yes O MW-5 I 3!312003 P 9.37 28.91 -19.54 <50 <0,5 <0.5 <0.5 <0.5 MW-5-�-6!312003 P 9.37 28.67 19.30 <50 <0.5 <0.5 <0.5 <0.5 <0.5[2] 5.4$ MW-5 9118!2003 P 9.37 32.08 -22.71 <50 <0.5 <0.5 <0.5 <0.5 <0.5[2] 1.21 MW-5 121812003 P 9.37 31_93 22,56 <50 <0-5 <0.5 <0.5 <0,5 <Q.52 MW-5 3/1112004 P 11.03 29,17 -18.14 <50 <0.5 <0.5 <0.5 <0.5 <0.5[2] 3.36 MW-5 611112004 P 11.03 29.83 -18.80 <50 <0.5 <0.5 <0.5 <0.5 <0.5(2( 2.9 MW-5 8132004 P 11.03 31.25 -20.22 <50 <0.5 <9.5 <0.5 <0.5 1.1[2] 4 MW-5 12222004 P 11.03 30.51 -19.48 <50 <0.5 <0.5 <0.5 <0.5 <0.5[21 4.1 MW-5 32912005 P 11.03 28.05 -17.02 <50 <0.5 <0.5 <0.5 <0.5 <0.5 2 5.61 MW-5 6!1612005 P 11.03 21.49 -18.46 450 <0.5 <0.5 <0.5 <0.5 -0.52 1.97 MW-5 9192005 P 11.03 29.68 -18.65 <50 <0.5 <0.6 <0.5 <0.5 <0.5 2 3.14 MW-5 12!712905 P 11.03 29.41 -18.38 <50 <0.5 <0.5 <0.5 <0.5 <0.52 MW-5 3122!2006 P 11.03 26.97 -15.94 <50 <0.5 <0.s <0.5 <0.5 <0.5[2] 6.37 11BP-ARCOl04 BP Valley Portfo1iol5481Tabcs406-Q11`,48 Table 1-2-3-4 Page 5 of 14 U3112006