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<br /> Groundwater Monitoring Data Page 2of3
<br /> ARCO Service Station No. 0548, 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Elevation
<br /> ample or Top Water of Ethyl Total
<br /> Number Date of Casing Level Groundwater TPHG Benzene Toluene benzene Xylenes_ TOG Observations
<br /> W3
<br /> 49-MW3 10/30/91 9 95 49 00 -39 05 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No 0
<br /> -3(62) 03/18/92 9 95 4578 -3583 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No 0
<br /> MW-3(62) 06/10/92 995 4747 -3752 60 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No
<br /> MW-3(62) 09/04/92 995 4922 39 27 **<73 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,Yes 011
<br /> MW-3(62) 12/04/92 995 4830 -3835 **<150 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,Yes 0
<br /> MW-3(62) 03/04/93 995 4543 -3548 **<140 <0 5 <0 5 <0 5 <0 7 NS No FP,No S,Yes O
<br /> MW-3(62) 06/07/93 995 4375 -3380 **<150 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,Yes 0
<br /> MW-3(62) 09/02/93 995 4551 -3556 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,Yes
<br /> MW-3(62) 12/16/93 995 4364 -33 51 ***140 <0 5 <0 5 <0 5 <0 5 NS No FP,No S No
<br /> -3(40) 04/08/94 995 4050 -3055 330 27 16 25 17 NS No FP,No S,0--NE
<br /> -3 06/22/94 995 4082 -3087 <10 <0 5 <0 5 <0 3 <0 5 NS No FP No S,O=NE
<br /> MW-3(44) 09/23194 9 95 43 02 -33 07 110 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,0=N
<br /> MW-3(47) 12/02/94 995 4232 -3237 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,0--NE
<br /> MW-3(62) 02/15/95 9 95 4069 -3074 ***84 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,O--NE
<br /> MW-3(62) 05/12/95 995 3880 -2885 ***10'0 <0 5 <0 5 <0 5 <0 5 NS No,FP,No S,No O
<br /> MW-3(62) 08/29195 9 95 4027 -3032 **<170 <0 5 <0 5 <0 5 <0 5 NS No,FP,No S,No 0
<br /> MW-3(62) 12/04/95 9 95 3906 29 11 **<150 <0 5 <0 5 <0 5 <0 5 NS No,FP,No S,No O
<br /> W4
<br /> 25-MW4 10/30/91 1157 5045 -3888 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,No 0
<br /> 4(63) 03/18/92 1157 4724 -3567 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,No
<br /> MW-4(63) 06/10/92 1157 4894 -37 37 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S.No
<br /> MW-4(64) 09/04/92 1157 5065 -3908 <50 <0 50 <0 50 <0 50 <0 50 NA No FP No S,Yes
<br /> MW-4(64) 12/04/92 1157 4973 38 16 <50 <0 50 <0 50 <0 50 <0 50 NA No FP,No S,Yes
<br /> MW-4(63) 03/04/93 1157 4689 -3532 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,Yes
<br /> MW-4(63) 06/07/93 1157 45 22 -3365 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No
<br /> MW-4(63) 09/02/93 1157 4696 -35 39 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-4(63) 12/16/93 1157 4488 -33 3I <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No O
<br /> MW-4(41) 04/08/94 1157 4197 -3040 26 12 20 05 2 6 NA No FP,No S,0--NE
<br /> MW-4 06/22/94 1157 4226 -3069 <10 <0 3 <0 3 <0 3 <0 5 NA No FP,No S,O=NF
<br /> MW 4(45) 09/23194 1157 4442 -3285 <50 <0 5 <0 5 <0 5 <0 5 NA No FP No S O=N
<br /> MW-4(48) 12/02/94 1157 43 69 3212 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,O=NE
<br /> MW-4(63) 02/15/95 1157 4212 -3055 <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,0--NE
<br /> 4{63) 05/12/95 1157 4028 -2871 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No O
<br /> MW-4(63) 08/29195 1157 4172 3015 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No
<br /> MW-4(63) 12/04/95 1157 40 44 -2887 <50 <0 5 <0 5 <0 5 <0 5 NS No FP,No S,No 0
<br /> N 1xls106051140021010996F1 xis Revision 2 1124/96
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