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<br /> Tate 1
<br /> Groundwater Monitoring Data Page 5 of 6
<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 Casmg Level Groundwater Screen TPHG Benzene Toluene Eth lbenzene Xylenes MTBE lj Observations
<br /> W-5
<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 05/19/97 929 2321 -1393 43,000 5,500 4,300 660 3,800 <300* No FP,No S,Yes 0
<br /> MW-5(54) 08/21/97 928 2429 -1501 32,000 5,200 3,900 560 3,100 <1,000** No FP,No S,Yes 0
<br /> MW-5(55) 11/17/97 928 2533 -1605 10,000 1,700 1,300 210 1,100 <500** No FP,No S,Yes 0
<br /> MW-5(55) 02/09/98 928 2262 -1334 4,700 740 520 110 520 <25** No FP,No S,Yes 0
<br /> W-6
<br /> MW-6(47) 10/28/93 893 3708 -28 15 300 93,000 15,000 20,000 1,600 11,000 NA No FP,No S,Yes 0
<br /> -6(41) 03/23/94 893 3761 -2868 79,000 11,000 14,000 1,500 9,300 NA 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 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 -2813 39,000 6,400 5,200 850 4,400 NA No FP,No S,O=NE
<br /> -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 /> -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 /> -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 2755 -1862 96,000 10,000 13,000 1,400 8,100 NA No FP,No S,Yes 0
<br /> -6(47) 05/15/96 893 2579 -1686 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 /> -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 /> -6 02/24/97 893 2277 -1384 140,000 9,700 11,000 1,400 8,500 <2,000** No FP,No S,Yes 0
<br /> -6 05/19/97 893 2253 -1360 69,000 7,900 5,000 1,200 7,700 <600* No FP,No S,Yes 0
<br /> MW-6(45) 08/21/97 893 2365 -1472 86,000 7,400 4,000 1,300 7,400 <1,000** No FP,No S,Yes 0
<br /> MW-6(41) 11/17/97 893 2470 -1577 42,000 5,400 2,100 1,100 6,600 <2,000** No FP,No S,Yes 0
<br /> MW-6(43) 02/09/98 893 2201 -1308 62,000 12,000 7,000 1,300 7,400 <1,000** No FP,No S,Yes 0
<br /> W-7
<br /> -7 10/28/93 888 38 11 -2923 300 42,000 31,000 9,300 970 6,000 NA No FP,No S,Yes 0
<br /> MW-7 03/23/94 888 3663 -2775 44,000 3,000 8,600 870 5,600 NA No FP
<br /> MW-7 06/29/94 889 3739 -2851 24,000 850 4,500 630 4,400 NA No FP,S=NE,O=NE
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<br /> N\XLW805V461A032398M1 XLS Emcon
<br /> Sheetl 3123/98
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