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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 Casmg Level Groundwater Screen TPHG Benzene Toluene Eth ]benzene Xylenes MTBE Observations
<br /> MW-2
<br /> MW-2(41) 09/26/94 10 83 4064 -2981 22,000 2,300 1,200 <0 5 850 NA No FP,S=NE,O=NE
<br /> MW-2 12/01/94 1083 4083 -3000 31,000 4,300 3,700 460 2,100 NA No FP,S=NE,O=NE
<br /> MW-2(53) 02/16/95 1083 3748 -2665 36,000 6,300 4,600 610 2,700 NA No FP,No S,O=NE
<br /> MW-2 05/17/95 Well Inaccessible
<br /> MW-2(53) 08/15/95 10 83 3245 -2162 20,000 3,500 2,000 280 1,300 NA No FP,No S,Yes 0
<br /> MW-2(53) 11/29/95 10 83 3262 -2179 30,000 3,800 2,700 380 1,800 NA No FP,No S,Yes 0
<br /> MW-2 02/27/96 10 83 29 87 -19 04 Well not sampled
<br /> MW-2(53) 05/15/96 1083 28 16 -17 33 16,000 2,600 1,000 210 910 <200** No FP, No S, Yes O
<br /> MW-2(53) 08/22/96 10 83 28 76 -1793 34,000 5,900 2,500 560 2,300 <300** No FP, No S,Yes 0
<br /> MW-2 11/25/96 10 83 2895 -18 12 26,000 4,000 2,000 390 1,800 <300* No FP,No S,Yes 0
<br /> MW-2 02/24/97 10 83 2495 -1412 22,000 3,100 1,300 340 1,400 <500** No FP,No S,Yes 0
<br /> MW-2 05/19/97 10 83 24 84 -1401 28,000 4,700 1,900 480 2,200 <300* No FP, No S,Yes 0
<br /> MW-3
<br /> W-39-MW-3 05/11/92 9 58 3905 -2947 360 65,000 13,000 3,000 1,800 8,300 NA No FP,No S,No 0
<br /> MW-3(54) 08/24/92 9 58 4084 -3126 77,000 15,000 9,400 2,300 2,300 NA No FP,No S,No 0
<br /> MW-3(54) 12/17/92 9 58 4169 -32 11 67,000 12,000 5,500 2,100 7,200 NA No FP,No S,No 0
<br /> MW-3(54) 03/10/93 9 58 3954 -2996 51,000 16,000 1,300 1,800 4,900 NA No FP,No S,Yes 0
<br /> MW-3(54) 06/10/93 958 3742 -27 84 44,000 12,000 2,100 1,800 3,200 NA No FP,No S, Yes 0
<br /> MW-3(54) 09/02/93 9 58 3823 -2863 49,000 13,000 2,200 2,100 4,500 NA No FP,No S,Yes 0
<br /> MW-3(54) 10/28/93 958 3846 -28 88 46,000 14,000 1,900 2,000 4,200 NA No FP,No S,Yes 0
<br /> MW-3(36) 03/23/93 958 3802 -28 44 42,000 12,000 2,300 1,900 3,300 NA No FP, No S,Yes 0
<br /> MW-3(36) 06/29/94 958 37 83 -28 25 44,000 14,000 5,300 1,800 5,500 NA No FP,No S,O=NE
<br /> MW-3(40) 09/26/94 958 3901 -2943 45,000 9,200 2,500 1,000 2,700 NA No FP,No S,O=NE
<br /> MW-3 12/01/94 9 58 3924 -29 66 Well Not Sampled No FP, S=Yes,O=NE
<br /> MW-3(53) 02/16/95 958 3624 -2666 37,000 14,000 340 2,100 470 NA No FP,No S,O=NE
<br /> MW-3(53) 05/17/95 958 3149 -2191 39,000 13,000 1,200 2,100 1,500 NA No FP,No S,O=NE
<br /> MW-3(53) 08/15/95 9 58 3106 -2148 31,000 11,000 220 1,800 910 NA No FP,No S,Yes 0
<br /> MW-3(53) 11/29/95 958 3125 -2167 41,000 10,000 350 1,900 860 NA No FP,No S,Yes O
<br /> MW-3 02/27/96 9 58 2851 -1893 36,000 10,000 510 1,800 990 NA No FP,No S Yes 0
<br /> MW-3(53) 05/15/96 9 58 2682 -1724 40,000 12,000 690 2,000 1,300 <500** No FP,No S,Yes 0
<br /> MW-3 08/22/96 9 58 27 35 -1777 53,000 14,000 2,000 2,400 2,900 <500* No FP,No S,Yes 0
<br /> N 1XLS\0805\14601\061897RI XLS EmCOn
<br /> Sheet! 7/31/97
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