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<br /> Groundwater Monitoring Data
<br /> Former 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 Casing Level Groundwater Screen TPHG Benzene Toluene Eth ]benzene Xylenes MTBE Observations
<br /> MW-5
<br /> MW-5(36) 03/23/94 9 28 37 97 -28 69 58,000 9,000 8,900 940 5,600 NA No FP,No S,Yes 0
<br /> N4W-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 9 28 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 9 28 3922 -2994 110,000 8,700 9,200 800 4,800 NA No FP,S=No,O=NE
<br /> MW-5(39) 02/16/95 928 35 78 -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) 08/15/95 928 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 9 28 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 08/22/96 928 27 14 -17 86 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 /> MW-5 02/24/97 928 2330 -1402 40,000 4,400 4,700 590 3,100 <700** No FP,No S,Yes 0
<br /> MW-5 05/19/97 928 2321 -1393 43,000 5,500 4,300 660 3,800 <300* No FP,No S,Yes 0
<br /> MW-6
<br /> MW-6(47) 10/28/93 893 37 08 -28 15 300 93,000 15,000 20,000 1,600 11,000 NA No FP,No S,Yes 0
<br /> MW-6(41) 03/23/94 893 37 61 -2868 79,000 11,000 14,000 1,500 9,300 NA No FP, No S,Yes 0
<br /> MW-6(41) 06/29/94 893 3692 -2799 60,000 11,000 15,000 1,000 8,300 NA No FP, S=NE,O=NE
<br /> MW-6(39) 09/26/94 893 38 15 -2922 92,000 7,500 13,000 1,100 6,800 NA No FP, S=NE,O=NE
<br /> MW-6 12/01/94 893 3836 -2943 Well Not Sampled No FP, S=Yes,O=NE
<br /> MW-6(47) 02/16/95 893 3706 -28 13 39,000 6,400 5,200 850 4,400 NA No FP,No S,O=NE
<br /> MW-6(46) 05/17/95 893 3064 -2171 130,000 9,900 16,000 1,800 10,000 NA No FP,No S,O=NE
<br /> NIW-6(46) 08/15/95 893 3022 -2129 120,000 7,700 9,700 1,500 8,900 NA No FP,No S, Yes 0
<br /> MW-6(45) 11/29/95 893 3030 -2137 160,000 8,200 11,000 1,700 10,000 NA No FP,No S,Yes 0
<br /> MW-6 02/27/96 893 27 55 -18 62 96,000 10,000 13,000 1,400 8,100 NA No FP,No S,Yes O
<br /> MW-6(47) 05/15/96 893 2579 -16 86 99,000 8,800 12,000 1,400 8,000 <900** No FP,No S,Yes 0
<br /> MW-6 08/22/96 893 2648 -1755 98,000 8,200 7,300 1,600 9,000 <1,000** No FP, No S,Yes 0
<br /> MW-6 11/25/96 893 2661 -1768 84,000 9,300 9,500 1,500 8,800 <900** No FP,No S, Yes O
<br /> MW-6 02/24/97 893 2277 -13 84 140,000 9,700 11,000 1,400 8,500 <2,000** No FP,No S,Yes O
<br /> MW-6 05/19/97 893 2253 -1360 69,000 7,900 5,000 1,200 7,700 <600* No FP,No S,Yes O
<br /> N\XLS\0805\1460PA61897R1 XLS EMCon
<br /> Sheet 7/31/97
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