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s M mm MOM mm I mm mm mm MM TABLE 2 GROUNDWATER MONITORING DATA I ARCO Service Station No 2130 7906 North EI Dorado Street,Stockton,California Elevation Static Water Groundwater Ethyl- Total Well Top of Casing Top of Screen Level Elevation TPHg Benzene Toluene benzene Xylene MtBE Number Date (feet msl) (ft btc) (ft btc) (feet msl) _9gVL gam- gg/L gg/L, µg/L µg/L Observations MW-5 06/20/01 15 10 3882 -2372 78[3] 2 5[4] 5 5[4] 4 7[4] 11[4] 60[2] No FP,No S (cont) 09/12/01 15 10 43 05 -27 95 <50 <2[4] Q[4] <2[4] <2[4] 29[2] No FP,No S 12/12/01 15 10 3989 -2479 <50 <1 0[4] <1 0[4] <1 0[4] 1 2[4] 25[2] No FP,No S 03/13/02 15 10 3699 -2189 <50 <0 50 061 <0 50 <0 50 35[2] No FP,No S 06/18/02 15 10 39 19 -2409 <50 <0 50 061 <0 50 330 7 8[2] No FP,No S 09/11/02 15 10 4433 -2923 63 34 5 0 19 14 9 1[2] No FP,No S 12/18/02 15.10 4168 -2658 <50 <0 50 4.4 <0 50 5.8 20[2] No FP,No S MW-6 02/28/95 1455 5900 5454 -3999 55 <0 5 <0 5 <0 5 <0 5 NA No FP,No S 05/19/95 1455 5259 -38 04 96*** <0 5 <0 5 <0 5 <0 5 NA No FP,No S 08/28/95 14 55 5425 -3970 120 <0 5 <0 5 <0 5 <0 5 NA No FP,No S 12/07/95 1455 5291 -38 36 <200** <0 5 <0 5 <0 5 <0 5 NA No FP,No S 02/05/96 1455 5039 -35 84 130 <0 5 <0 5 <0 5 <0 5 NA No FP,No S 05/30/96 1455 4738 -3283 140*** <0 5 <0 5 <0 5 <0 5 <3 No FP,No S 09/18/96 1455 5126 -3671 <200*** <0 5 <0 5 <0 5 <0 5 <3 No FP,No S 11/26/96 1455 4901 -3446 <200*** <0 5 <0 5 <0 5 <0 5 <4** No FP,No S 03/24/97 1455 4397 -2942 <50 <0 5 <0 5 <0 5 <05 <3 No FP,No S 05/20/97 1455 44 52 -2997 180 <2** <0 5 <0 5 <0 5 <3 No FP,No S 08/19/97 1455 4812 -3357 190 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S 11/19/97 1455 4626 -3171 95 3 4 21 10 25 <5 No FP,No S 03/04/98 1455 4163 -2708 60 16 <0 5 <0 5 <0 5 <5 No FP,No S 06/26/98 1455 3933 -2478 101 0 734 <0 5 <0 5 <0 5 <5 No FP,No S 09/01/98 1455 4101 -2646 205 0 684 <0 5 <0 5 <0 5 <5 No FP,No S 12/02/98 1455 3842 -2387 124 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S 03/31/99 1455 3484 -2029 676 162 <0 5 <0 5 <0 5 <5 No FP,No S 06/04/99 1455 3606 -2151 118 177 <0 S <0 5 <0 5 886 No FP,No S 09/02/99 1455 4063 -2608 201 2 84 <0 5 <05 <0 5 141 No FP,No S 11/29/99 1455 3878 -2423 53 0 839 <05 <0 5 <05 <2 5 No FP,No S 03/16/00 1455 34 84 -2029 <50 <0 5 <0 5 <0 5 <05 <2 5 No FP,No S 06/26/00 1455 3735 -2280 191 129 <05 <0 5 <05 <2[2] No FP,No S 09/28/00 1455 4161 -27 06 <50 250 <0 5 <0 5 <0 5 <2[2] No FP,No S 6 of 12 K 1Wlmocess115 BP ARC0502130\Stte Conceptual Male/Repon5ARC0-2130 GW➢uta