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TA 1 y <br /> Groundwater Monitoring Data <br /> 1995 to Present <br /> ARCO Service Station No 2130 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Page 4 of 8 <br /> Well Elevation Static Water Groundwater Ethyl- Total <br /> Number Date Top of Casing Top of Screen Level Elevation TPHG Benzene I oluene benzene Xylene MTBE Observations <br /> MW-5 05/30/96 1510 4770 -3260 140*** 15 <0 5 5 2 <0 5 <4** No FP,No S <br /> MW-5 09/18/96 15 10 5156 -3646 <300*** 33 <0 5 9 0 <0 5 <3 No FP,No S <br /> MW-5 11/26/96 1510 4934 -34 24 <200*** 19 <0 5 0 5 <0 5 <4** No FP,No S <br /> MW-5 03/24/97 1510 4424 -29 14 <200*** 3 2 <0 5 16 3 0 <8** No FP,No S <br /> MW-5 05/20/97 1510 4485 -29 75 270 31 5 0 5 0 15 <20** No FP, No S <br /> MW-5 08/19/97 1510 4837 -33 27 100 20 <0 5 3 8 <0 5 <5 No FP,No S <br /> MW-5 11/19/97 1510 4662 -31 52 <50 1 2 094 <0 5 0 91 <5 No FP,No S <br /> MW-5 03/04/98 1510 4190 -26 80 <50 5 6 18 16 31 <5 No FP,No S <br /> MW-5 06/26/98 1510 3964 -2454 <50 4 19 0 624 0 794 0 999 <5 No FP,No S <br /> MW-5 09/01/98 1510 4144 -2634 <50 13 2 <0 5 139 0 535 5 15 No IT, No S <br /> MW-5 12/02/98 1510 3874 -23 64 <50 0 693 <0 5 <0 5 <0 5 894 No FP,No S <br /> MW-5 03/31/99 1510 3517 -20 07 <50 133 0 586 <0 5 152 994 No FP,No S <br /> MW-5 06/04/99 1510 3648 -2138 <50 503 0 721 <0 5 16 706 No FP,No S <br /> MW-5 09/02/99 1510 4105 -2595 <50 6 14 <0 5 183 0 848 2 86[21 No FP,No S <br /> MW-6 02/28/95 1455 5900 5454 -3999 55 <6 5 <0 5 <0 5 <05 NA No FP,No S <br /> MW-6 05/19/95 1455 5259 -38 04 96*** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 08/28/95 14 55 5425 -3970 120 <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 12/07/95 1455 5291 -3836 <200** <0 5 <0 5 <0 5 <0 5 NA No FP,No S <br /> MW-6 02/05/96 1455 5039 -35 84 130 <05 <05 <05 <0 5 NA No FP,No S <br /> MW-6 05/30/96 1455 4738 -3283 140*** <0 5 <05 <0 5 <0 5 <3 No rl',No S <br /> MW-6 09/18/96 1455 5126 -3671 <200*** <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 11/26/96 1455 4901 -3446 <200*** <0 5 <0 5 <0 5 <0 5 <4** No FP,No S <br /> MW-6 03/24/97 1455 4397 -2942 <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S <br /> MW-6 05/20/97 1455 44S2 -29 97 180 <2** <0 5 <0 5 <05 <3 No FP,No S <br /> MW-6 08/19/97 1455 4812 -3357 190 <0 5 <0 5 <0 5 <05 <5 No FP,No S <br /> MW-6 11/19/97 1455 4626 -3171 95 3 4 21 10 2 5 <5 No 1'P,No S <br /> MW-6 03/04/98 1455 4163 -27 08 60 1 6 <0 5 <0 5 <0 5 <5 No FP,No S <br /> MW-6 06/26/98 1455 3933 -24 78 101 0 734 <0 5 <0 5 <0 5 <5 No FP,No S <br /> CP\C%ARCHIVE RCQ121301QTRLY12130g399 As ;D & <br />