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<br /> Table 1
<br /> Groundwater Monitoring Data
<br /> ARCO Service Station 0548, 1612 Hammer Lane,Stockton,California
<br /> Well Elevation Static Elevation
<br /> Sample of Top Water of Total
<br /> Number Date of Casing Level Groundwater _ TPHG Benzene Toluene Ethylbenzene Xylenes TOG Observations
<br /> MW-1
<br /> W-49-MW1 10/30/91 1036 4958 -3922 <50 21 <0 50 <050 096 NS No FP,No S,No O
<br /> W-49-MW1# 10/30/91 1036 NM NM <50 <0 50 <0 50 <0 50 <0 50 NS NS
<br /> MW-1(56) 03/18/92 1036 4630 -3594 130 1800 <050 <0 50 17 NS No FP,No S,No O
<br /> MW-1(56) 06/10/92 1036 4810 -3774 <50 10 <0 50 <0 50 <0 50 NS No FP,No S,No O
<br /> MW-1(56) 09/04/92 1036 4985 -3949 260 87 '<t '<i •<1 NS No FP,No S,Yes O
<br /> MW-1(56) 12/04/92 1036 4883 -3847 "'150 70 <0 50 <0 50 <050 NS No FP,No S,Yes O
<br /> MW-1' 03/04/93 1036 ' ' No FP,No S,Yes 0
<br /> MW-1(56) 06107/93 1036 4424 -3388 160 09 <0 5 <0 5 <0 5 <0 5 No FP,No S,Yes 0
<br /> MW-1(56) 09/02/93 1036 4614 -3578 130 09 <05 <0 5 <05 <0 5 No FP,No S,Yes O
<br /> MW-1(56) 12/16/93 1036 4392 -3356 110 13 07 06 15 <0 5 No FP,No S,Yes O
<br /> MW-1(56) 04/08/94 1036 4094 3058 150 22 26 4 5 31 NS No FP,No S,O-NE
<br /> MW-1 06/22/94 1036 4140 -3104 75 1 7 22 31 65 NS No FP,No S,O=NE
<br /> MW-1(44) 09/23/94 1036 4362 -3326 150 46 14 19 42 NS No FP,No S,O=NE
<br /> MW-i(46) 12/02/94 1036 4281 -3245 60 30 1 4 14 24 NS No FP,No S,O=NE
<br /> MW-2
<br /> W-49-MW2 10/30/91 982 491G -39 2B <50 <0 50 <0 50 <050 <050 NS 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 NS No FP,No S,No 0
<br /> MW-2(61) 06/10/92 982 4757 -3775 <50 <0 50 <0 50 <0 50 <0 50 NS No FP,No S,No 0
<br /> MW-2(61) 09/04/92 982 4936 -3954 <50 <050 <050 <050 <0 50 NS No FP,No S,Yes O
<br /> MW-2(61) 12/04/92 982 48 36 -3953 <50 <050 <0 50 <0 50 <0 50 NS No FP,No S,Yes 0
<br /> MW-2(61) 03/04/93 982 4546 -3564 "•57 •'<0 6 <0 5 <0 5 <05 NS No FP,No S,Yes O
<br /> MW-2(61) 06/07/93 982 4384 -3402 <50 <0 5 <0 5 <05 <0 5 NS No FP,No S,No O
<br /> MW-2(61) 09/02/93 982 4565 -3583 <50 <0 5 <0 5 <0 5 <05 NS No FP,No S,No O
<br /> MW-2(61) 12/16193 982 4349 -3367 <50 29 <05 <0 5 <0 5 NS No FP,No S,No 0
<br /> MW-2(61) 04/08/94 982 4041 -3059 <50 <1 5 <1 5 <1 5 <2 5 NS No FP,No S,O=NE
<br /> MW-2 06/22/94 982 4088 -3106 <10 <0 3 <0 3 <0 3 <05 NS No FP,No S,O=NE
<br /> MW-2(44) 09/23/94 982 4314 -3332 <50 <0 50 <0 5 <0 5 <05 NS No FP No S,No 0
<br /> MW-2(47) 12/02/94 982 4231 -3249 <50 <0 5 <0 5 <0 05 <0 05 NS No FP,No S,No O
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