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<br /> Groundwater Monitoring Data
<br /> ARCO Service Station No 548, 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Top Elevation
<br /> Sample of Top Water of of Ethyl- Total
<br /> Number Date of Casing Level Screen Groundwater TPHG Benzene Toluene benzene Xylenes MTBE Observations
<br /> MW-1
<br /> W49-MW 1 10/30/91 1036 4958 4851 -39 22 <50 2 1 <0 50 <0 50 096 NA No FP,No S,No 0
<br /> W-49-MW 1# 10/30/91 1036 NM NM <50 <0 50 <0 50 <0 50 <0 50 NA NE
<br /> MW-1(56) 03/18/92 1036 4630 -35 94 130 1800 <0 50 <0 50 17 NA No FP,No S,No 0
<br /> MW-1(56) 06/10/92 1036 48 10 -3774 <50 10 <0 50 <0 50 <0 50 NA No FP,No S,No O
<br /> MW-1(56) 09/04/92 1036 4985 -3949 260 87 **<1 **<1 **<1 NA No FP,No S,Yes 0
<br /> MW-1(56) 12/04/92 1036 48 83 -3847 ***150 7 0 <0 50 <0 50 <0 50 NA No FP,No S,Yes 0
<br /> MW-1* 03/04/93 1036 * * * * * * * NA No FP,No S,Yes 0
<br /> MW-1(56) 06/07/93 1036 4424 -3388 160 0 9 <0 5 <0 5 <0 5 NA No FP,No S,Yes 0
<br /> MW-1(56) 09/02/93 1036 4614 -3579 130 09 <0 5 <0 5 <0 5 NA No FP,No S,Yes 0
<br /> N4W-1(56) 12/16/93 1036 4392 -33 56 Ito 1 3 0 7 0 6 15 NA No FP,No S,Yes O
<br /> MW-1(56) 04/08/94 1036 4094 -3058 150 22 26 45 31 NA No FP,No S,O-N
<br /> MW-1 06/22/94 1036 4140 -3104 75 17 22 3 1 65 NA No FP,No S,O=NE
<br /> MW-1(44) 09/23/94 1036 43 62 -3326 150 4 6 14 19 4 2 NA No FP,No S,O=NE
<br /> MW-1(46) 12/02/94 1036 4281 -3245 60 3 0 14 14 24 NA No FP,No S,O=NE
<br /> MW-1(56) 02/15/95 1036 41 19 -3083 59 2 1 2 5 to 33 NA No FP,No S,O=NE
<br /> N4W-1(56) 05/12/95 1036 3933 -28 97 84 4 7 4 1 17 65 NA No FP,No S,Yes 0
<br /> MW-1(56) 08/29/95 1036 40 89 -3053 190 80 5 8 47 18 NA No FP,No S,Yes 0
<br /> MW-1(56) 12/04/95 1036 3953 -29 17 78 23 14 14 53 NA No FP,No S,Yes 0
<br /> MW-1 02/02/96 1036 3757 -2721 59 34 1 5 1 5 4 9 NA No FP,No S,No 0
<br /> MW-1(56) 05/10/96 1036 3504 -24 68 92 55 2 1 24 12 <3 No FP,No S, No 0
<br /> MW-1(56) 08/29/96 1036 3677 -2641 100 4 2 14 3 2 12 <3 No FP,No S,No 0
<br /> MW-2
<br /> W49-MW2 10/30/91 9 82 49 10 4700 -3928 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,No 0
<br /> MW-2(61) 03/18/92 982 4881 -3599 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,No 0
<br /> MW-2(61) 06/10/92 9 82 4757 -37 75 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,No 0
<br /> MW-2(61) 09/04/92 982 4936 -3954 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,Yes 0
<br /> MW-2(61) 12/04/92 982 4836 -3953 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,Yes 0
<br /> MW-2(61) 03/04/93 982 4546 -35 64 ***57 **<0 6 <0 5 <0 5 <0 5 NA No FP,No S,Yes 0
<br /> MW-2(61) 06/07/93 982 4384 -34 02 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-2(61) 09/02/93 982 4565 -3583 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No O
<br /> MW-2(61) 12/16/93 9 82 4349 -3367 <50 2 9 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-2(61) 04/08/94 9 82 4041 -3059 <50 <1 5 <15 <1 5 <2 5 NA No FP,No S,O=NE
<br /> N\xls\0805\14005\092496M1 zis Revmon 0 10/15/96
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