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<br /> Groundwater Monitoring Data
<br /> ARCO Service Station No. 2168, 441 Charter Way, Stockton, California
<br /> Well Elevation Static Elevation Top
<br /> Sample of Top Water of of Total
<br /> Number Date of Casuf p Level Groundwater Screen TPHG Benzene Toluene Eth lbenzene Xylenes MTBE Observations
<br /> MW-4
<br /> MW-4(59) 10/28/93 1234 4178 -29 44 90,000 1,100 20,000 2,700 13,000 NA No FP,No S,Yes 0
<br /> MW-4(38) 03/23/94 1234 4123 -28 89 38,000 7,600 12,000 2,000 10,000 NA No FP,No S,Yes 0
<br /> NIW-4(38) 06/29/94 1234 4106 -2872 43,000 2,400 2,800 1,000 5,800 NA No FP,No S,O=NE
<br /> MW-4(43) 09/26/94 1234 4226 -2992 60 000 4,600 7 400 1300 6,000 NA No FP,No S,O=NE
<br /> MW4 12/01/94 1234 4241 -30 07 Weil Not Sampled No FP,S=Yes,O=NE
<br /> NFW-4(58) 02/16/95 1234 39 25 -2691 77,000 9,200 13,000 1,700 8,000 NA No FP,No S,O=NE
<br /> MW-4(58) 05/17/95 1234 34 65 -2231 89,000 11,000 17,000 2,100 9,900 NA No FP,No S,O=NE
<br /> MW-4(59) 08/15/95 1234 34 30 -2196 74,000 6,400 10,000 1,600 7,600 NA No FP,No S,Yes 0
<br /> MW4(59) 11/29/95 1234 34 42 -2208 92,000 7,800 12,000 1,700 7,600 NA No FP,No S,Yes 0
<br /> MW4 02/27/96 1234 3167 -1933 61,000 7,600 8,500 1,600 6,600 NA No FP,No S,Yes 0
<br /> MW-4(58) 05/15/96 1234 3009 -1775 64,000 8,140 8,600 1,600 6,400 <500* No FP,No S,Yes 0
<br /> MW-4 08/22/96 1234 3072 -1838 79,000 9,200 11,000 1,800 7,400 C700** No FP,No S,Yes 0
<br /> MW-4 11/25/96 1234 3078 -1844 72,000 8,800 9,300 1,600 6,100 X500* No FP,No S,Yes 0
<br /> MW-5
<br /> MW-5 01/20/93 928 41 12 -3184 370 NS NS NS NS NS NS No FP,No S,Yes 0
<br /> MW-5 01/26/93 928 4077 -3149 NS NS NS NS NS NS No FP,No S,Yes 0
<br /> MW-5(55) 03/10/93 9 28 39 11 -2983 49,000 9,200 6,600 830 4,200 NA No FP,No S,Yes 0
<br /> MW-5(55) 06/10/93 928 37 34 -2806 37,000 6,400 4,100 870 3,800 NA No FP,No S,Yes 0
<br /> MW-5(55) 09/02/93 9 28 38 23 -2895 51,000 7,900 6,600 990 4,800 NA No FP,No S,Yes 0
<br /> MW-5(55) 10/28/93 928 3846 -29 18 60,000 9,200 9,000 1,200 6,700 NA No FP,No S,Yes 0
<br /> MW-5(36) 03/23/94 928 3797 -2869 58,000 9,000 8,900 940 5,600 NA No FP,No S,Yes 0
<br /> MW-5(36) 06/29/94 9 28 3779 -2851 50,000 7,300 7,500 920 4,700 NA No FP,S=NE,O=NE
<br /> MW-5(40) 09/26/94 928 39 05 -2977 76,000 7,300 8,200 770 4,200 NA No FP,S=NE,O=NE
<br /> MW-5 12/01/94 928 39 22 -29 94 110,000 8,700 9,200 800 4,800 NA No FP,S=No,O=NE
<br /> MW-5(39) 02/16/95 928 3578 -2650 180,000 8,500 15,000 2,200 12,000 NA No FP,No S,O=NE
<br /> MW-5(55) 05/17/95 928 3123 -2195 22,000 3,400 2,100 390 2,400 NA No FP,No S,O=NE
<br /> MW-5(55) 08/15/95 9 28 3083 -2155 32,000 4,200 3,500 410 2,500 NA No FP,No S,Yes 0
<br /> MW-5(55) 11/29/95 928 3100 -2172 52,000 8,300 8,100 810 4,100 NA No FP,No S,Yes 0
<br /> MW-5 02/27/96 928 28 19 -1891 20,000 3,200 1,900 440 1,800 NA No FP,No S,Yes 0
<br /> MW-5(55) 05/15/96 928 2666 -1738 43,000 6,500 5,000 790 3,400 <500* No FP,No S,Yes 0
<br /> MW-5 08/22/96 9 28 27 14 -1786 58,000 8,700 8,200 880 4,500 <500* No FP,No S,Yes 0
<br /> MW-5 11/25/96 928 2733 -1805 53,000 7,000 6,100 800 4,000 <600** No FP,No S,Yes 0
<br /> N\XLS\08ON4607012097R1 XLS Revision 1/20/97
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