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<br /> Page 2 of 3 Pages
<br /> Table 1
<br /> Groundwater Monitoring Data
<br /> ARCO Service Station 2163,411 Charter Way Stockton California
<br /> Well Elevation Static Elevation
<br /> Sample of Top Water of Total
<br /> Number Date of Casing Level Groundwater TPHG Benzene Toluene Eth ibenzene Xylenes Observations
<br /> MW-4
<br /> MW 4 01/20/93 1234 4435 -3201 NS NS NS NS NS No FP,No S,Yes O
<br /> MW 4 01/26/93 1234 4399 -3165 NS NS NS NS NS No FP, No S,Yes O
<br /> MW 4(59) 03/10/93 1234 4242 -3008 110,000 14,000 24 000 3200 15,000 No FP,No S,Yes O
<br /> MW-4(59) 06/10/93 1234 4068 2834 110 000 9,100 17 000 2,700 13,000 No FP,No S,Yes O
<br /> MW-4(59) 09/02193 1234 4159 -2925 110,000 12,000 21,000 2,700 13,000 No FP,No S,Yes O
<br /> MW-4(59) 10/28/93 1234 4178 29 44 90 000 1 100 20 000 2,700 13 000 No FP No S Yes O
<br /> MW4 38 03/23/94 1234 4123 2889 38,000 7,600 12,000 2,000 10 000 No FP,No S Yes O
<br /> MW4-38 06/29/94 1234 41 06 -2872 43 000 2,400 2 800 1 000 5 800 No FP No S,O=NE
<br /> MW4 43 09/26/94 1234 4226 2992 60 000 - 4 600 7 400 1,300 6 000 No FP No S O=NE
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<br /> MW-5
<br /> MW5 01/20/93 928 4112 -3184 NS NS NS NS NS No FP,No S,Yes O
<br /> MW-5 01/26/93 928 4077 3149 NS NS NS NS NS No FP, No S Yes O
<br /> MW 5(55) 03/10/93 928 39 11 -2983 49,000 9,200 6,600 830 4200 No FP,No S Yes O
<br /> MW 5(55) 06/10/93 9 28 3734 -2806 37,000 6,400 4100 870 3,800 No FP,No S,Yes O
<br /> MW 5(55) 09/02/93 928 3823 -2895 51,000 7,900 6,600 990 4 800 No FP,No S Yes O
<br /> MW-5(55) 10/28/93 928 3846 -2918 60,000 9,200 9,000 1,200 6,700 No FP,No S,Yes O
<br /> MW-5.36 03/23/94 928 3797 -2869 58,000 9,000 8,900 940 5,600 No FP,No S,Yes O
<br /> MW-5-36 06/29/94 928 3779 -2851 50,000 7,300 7 500 920 4,700 No FP,S=NE,O=NE
<br /> MW 5-40 09/26/94 928 3905 -2977 76,000• 7 300• 8,200 770 4,200 No FP,S=NE,O=NE
<br /> MW-6
<br /> MW-6(47) 10/28/93 893 3708 -2815 93 000 15,000 20,000 1,600 11,000 No FP,No S,Yes O
<br /> MW 6-41 03/23/94 893 3761 2868 79,000 11 000 14,000 1,500 9,300 No FP,No S,Yes O
<br /> MW-6-41 06/29/94 893 3692 2799 60,000 11,000 15 000 1 000 8 300 No FP S=NE,O=NE
<br /> MW-6(39) 09/26/94 893 -3815 -2922 92,000 500 13 000 1,100 6,800 No FP,S=NF- O=NE
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<br /> AsO8051146011i 1159461 xls
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