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<br /> Groundwater Monitoring Data Page 1 of 4
<br /> ARCO Service Station No. 2168, 441 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 ]benzene Xylenes Observations
<br /> MW-1
<br /> -40-MW-1 05/11/92 1045 4027 -2982 60,000 5,900 1,600 430 800 No FP,No S,Yes 0
<br /> MW-1(54) 08!24192 1045 4206 -3161 14,000 4,100 330 310 490 No FP,No S,Yes 0
<br /> MW 1(54) 12/17/92 1045 4279 -3234 I4,000 3,500 410 400 800 No FP,No S,Yes 0
<br /> MW-1(54) 03/10/93 1045 4042 -2997 28,000 6,500 340 580 1,700 No FP,No S,Yes 0
<br /> 1(54) 06/10/93 1045 3858 -2813 23,000 5,600 640 470 1,400 No FP,No S,Yes 0
<br /> MW-1(54) 09/02/93 1045 3950 -2905 27 000 7,500 700 620 2 300 No FP No S,Yes 0
<br /> MW-1(54) 10/28/93 1045 3973 -2928 31,000 8,900 1,200 830 2,300 No FP,No S,Yes 0
<br /> MW-1(39) 03123193 1045 3923 -2978 34,000 8 300 630 740 2,400 No FP,No S.Yes 0
<br /> MW-1(39) 06/29/94 1045 3902 -2857 36,000 11,000 11 500 840 3,300 No FP,No S,O=NE
<br /> MW 1(4 1) 09/26/94 1045 4025 2980 34,000 6,000 490 550 1,400 No FP,No S,O=NE
<br /> MW-1(41) 12/01/94 1045 404t -2996 60,000 7,100 1,000 290 710 No FP,No S,O=NE
<br /> W--1(54) 02/16/95 1045 37 11 -2666 36,000 11,000 460 990 3,200 No FP,No S.O=NE
<br /> MW-1(53) 05/17/95 1045 3261 -2216 38,000 12,000 790 1,100 3,400 No FP,No S,O=NE
<br /> MW-1(54) 08/15/95 1045 32 13 -2168 45,000 10,000 330 1,000 3,300 No FP,No S,Yes 0
<br /> MW-1(54) 11/29/95 1045 3232 -2187 46 000 9,800 370 1,100 2,900 No FP,No S,Yes 0
<br /> MW-1 02/2719 Well Inaccessible
<br /> MW-2
<br /> W-40-MW-2 05/11/92 1083 4063 -2980 14,000 2,100 160 <50 1,100 No FP,No S,Yes 0
<br /> MW 2(53) 08/24/92 1083 4244 -31 61 12,000 2,400 1,100 Ito 600 No FP,No S,Yes 0
<br /> MW-2(53) 12/17/92 1083 43 18 -3235 13,000 2 500 1,500 190 880 No FP,No S,Yes 0
<br /> MW-2(53) 03/10/93 1083 4077 -2994 16,000 3,300 1,500 210 100 No FP,No S,Yes O
<br /> MW-2(53) 06/10/93 1083 3894 -2811 19 000 3,700 1,800 280 1 100 No FP,No S,Yes 0
<br /> MW 2(53) 09/02/93 1083 3986 -2903 18 000 3,300 1,800 260 1,200 No FP,No S,Yes 0
<br /> MW 2(53) 10/28/93 1083 4009 -2926 17,000 3,600 2 300 320 1,500
<br /> MW-2(39) 03/23/93 1083 3961 -2878 29,000 4,100 2,800 410 1,600 No FP,No S,Yes 0
<br /> MW-2(39) 06/29/94 1083 3940 -2857 23 000 4,400 2,600 330 1 500 No FP,S=NE,O=NE
<br /> MW-2(41) 09/26194 1083 4064 -29 81 22,000 2,300 1,200 <0 5 850 No FP,S=NE,O=NE
<br /> MW-2 12/01/94 1083 4083 -3000 31 000 4,300 3,700 460 2,100 No FP,S=NE,0=NE
<br /> MW-2(53) 02/16/95 1083 3748 -2665 36,000 6,300 4,600 610 2,700 No FP,No S,O=NE
<br /> MW-2 05/17/95 Well Inaccessible
<br /> W-2(53) 08/15/95 1083 3245 -2162 20,000 3,500 2,000 280 1,300 No FP,No S Yes 0
<br /> MW-2(53) 11129/95 1083 3262 -2179 30,000 3,800 2,700 380 1,800 No FP,No S,Yes 0
<br /> MW-2 02/27/96 1083 2987 -1904 Well not sampled
<br /> MW
<br /> -39-MW-3 05/11/92 958 3905 -2947 65,000 13,000 3,000 1,800 8 300 No FP,No S,No 0
<br /> MW-3(54) 08/24/92 958 4084 -3126 77,000 15,000 9,400 2,300 2,300 No FP,No S,No 0
<br /> Revision] 5130196
<br /> N\XLS%D80N4607\053096Sl XLS
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