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<br /> Groundwater Monitoring Data Page i of 3
<br /> ARCO Service Station No. 0548, 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Elevation
<br /> Sample of Top Water of Ethyl Total
<br /> Number Vate of Casing I evel Gmindll itLr TPHG Benzene toluene bonzene Xylenes TOG Observations
<br /> MW
<br /> 49 MW1 10/30/91 1036 4958 3922 <50 2 1 <0 50 <0 50 096 NS No FP No S No O
<br /> W 49-MW 1# 10130/91 1036 NM NM <50 <0 50 <0 50 <0 50 <0 50 NS NE
<br /> MW-1(56) 03/18/92 1036 4630 35 94 130 1800 <0 50 <0 50 17 NS 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 NS No FP,No S,No 0
<br /> MW 1(56) 09/04/92 1036 4985 3949 260 8 7 *<I *<I *<1 NS No FP,No S,Yes O
<br /> MW-1(56) 12/04/92 1036 48 83 3847 ***150 7 0 <0 50 <0 50 <0 50 NS No FP No S,Yes O
<br /> MW-1* 03/04/93 1036 + * * * * * * * No FP,No S,Yes O
<br /> MW-1(56) 06/07/93 1036 4424 -33 88 160 0 9 <0 5 <0 5 <0 5 <0 5 No FP,No S,Yes
<br /> MW 1(56) 09/02/93 10 36 46 14 -3578 130 0 9 <0 5 <0 5 <0 5 <0 5 No FP No S,Yes O
<br /> MW 1(56) 12/16/93 1036 4392 -3356 110 13 0 7 0 6 15 <0 5 No FP,No S,Yes 0
<br /> MW 1(56) 04108/94 10 36 4094 3058 ISO 22 26 4 5 31 NS No FP,No S,O-
<br /> Mw-1 06/22/94 10 36 4140 -3104 75 17 22 3 1 6 5 NS No FP,No S,O=NE
<br /> MW-1(44) 09/23/94 1036 4362 -3326 150 4 6 14 19 4 2 NS No FP,No S,O=NE
<br /> MW-1(46) 12/02/94 1036 4281 -3245 60 3 0 14 1 4 2 4 NS No FP,No S O=NE
<br /> MW 1(56) 02/15/95 1036 41 19 -30 83 59 2 1 2 5 10 3 3 NS No FP,No S 0=N
<br /> MW 1(56) 05/12/95 1036 3933 -2897 84 4 7 4 1 1 7 6 5 NS No FP,No S,Yes 0
<br /> MW 1(56) 08/29/95 1036 4089 -3053 190 8 0 5 8 4 7 18 NS No FP,No S,Yes 0
<br /> MW-1(56) 12/04/95 1036 39 53 -29 17 78 2 3 14 14 5 3 NS No FP,No S,Yes 0
<br /> MW-1 02/02/96 1036 3757 -27 21 59 3 4 1 5 15 4 9 NS No FP No S No
<br /> MW2
<br /> W 49-MW2 10/30191 9 82 49 10 -3928 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No O
<br /> MW-2(61) 03/18/92 9 82 4881 -3599 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No O
<br /> MW-2(61) 06/10/92 9 82 47 57 3175 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No 0
<br /> MW-2(61) 09/04/92 9 82 4936 -3954 <50 <0 50 <0 50 <0 50 <0 50 NS 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 NS 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 NS No FP No S,Yes O
<br /> MW 2(61) 06/07/93 982 4384 3402 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No O
<br /> MW 2(6 1) 09/02/93 9 82 4565 35 83 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No 0
<br /> MW 2(61) 12/16/93 982 4349 3367 <50 29 <0 5 <0 5 <0 5 NS No FP,No S,No 0
<br /> MW 2(6 1) 04/08/94 9 82 4041 3059 <50 <1 5 <1 5 <1 5 <2 5 NS No FP,No S,O=NE
<br /> MW-2 06/22/94 9 82 4088 3106 <10 <0 3 <0 3 <0 3 <0 5 NS No FP,No S,O=NC
<br /> MW-2(44) 09/23/94 9 82 43 14 3332 <50 <0 50 <0 5 <0 5 <0 5 NS No FP,No S,O=NE
<br /> MW-2(47) 12/02/94 9 82 42 31 -3249 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,O=NE
<br /> MW-2(61) 02/15/95 9 82 4067 3085 <50 <0 5 <0 5 050 <0 5 NS No FP,No S,O=NE
<br /> MW-2(61)
<br /> 5/12195 982 3885 2903 <50 <0 5 <0 5 <0 5 <0 5 NS No FP No S No O
<br /> MW-2(61) 08/29/95 9 82 4044 -3062 **<52 <0 5 <0 5 10 <0 5 NS No FP,No S,No O
<br /> MW 2(61) 12/04/95 9 82 3908 -2926 **<60 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No O
<br /> MW-2 02/02/96 9 82 3709 -2727 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No O
<br /> N\x1s\0805V40OM22896A1 xls Revision 1 2/28/96
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