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<br /> Ta& #of 5
<br /> Groundwater Monitoring Data
<br /> 1995 to Present
<br /> ARCO Service Station No. 548, 1612 Hammer Lane, Stockton, California
<br /> Well Elevation Static Top Elevation Groundwater
<br /> Sample of Top Water of of Flow Ethyl- Total
<br /> Number Date of Casing Level Screen Groundwater Direction TPHG Benzene Toluene benzene Xylenes MTBE 1 Observations
<br /> MWA 05/27/97 1157 3321 -2164 E-SE <50 <0 5 <0 5 <0 5 <0 5 <3 No FP,No S,No 0
<br /> MW4 (62) 08/12/97 1157 3445 -2288 E <50 <0 5 <0 5 <05 <05 <5 No FP,No S,No 0
<br /> MW-4 (64) 11/18/97 1157 3431 -2274 E <50 45 25 091 21 <5 No FP,No S,No 0
<br /> MW-4 (63 8) 02/16/18 1157 3117 -1960 SE <50 <05 <0 5 <0 5 <0 5 <5 No FP,No S,No 0
<br /> MW-4 (62) 06/23/98[P] 1157 2852 -1695 SE <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No 0
<br /> MWA (62) 09/29/98[P] 1157 3013 -1856 E <50 <0 5 <0 5 <0 5 <0 5 <5 No FP,No S,No 0
<br /> MW-4 12/30/98 1157 NM -- SE -----------------------Well inaccessible---------------
<br /> MW-5 (60) 02/15/95 937 4028 4200 -3091 E 6,700 420 87 620 1,100 NA No FP,No S, O=NE
<br /> MW-5 (61) 05/12/95 937 3895 -2908 E 5,000 560 110 400 600 NA No FP,No S,Yes 0
<br /> MW-5 (60) 08/29/95 937 4007 -3070 E 5,700 410 150 310 590 NA No FP,No S,Yes 0
<br /> MW-5 (6 1) 12/04/95 937 3863 -2926 E 1,200 55 11 83 92 NA No FP,No S,Yes 0
<br /> MW-5 02/02/96 937 3666 -2729 E 270 76 15 11 98 NA No FP,No S,Yes 0
<br /> MW-5 (60) 05/10/96 937 3415 -2478 E 5,700 420 180 380 610 34 No FP,No S,Yes 0
<br /> MW-5 (60) 08/2.9/96 937 3599 -2662 E 9,600 510 90 710 970 39 No FP,No S,Yes 0
<br /> MW-5 (60) 11/20/96 937 3483 -2546 E 4,500 210 93 310 510 *<50 No FP,No S,Yes 0
<br /> MW-5 (60) 03/19/97 937 3112 -2175 E-SE 6,200 420 68 360 590 ***<60 No FP,No S,Yes 0
<br /> MW-5 05/27/97 937 3119 -2182 E-SE 4,500 490 59 230 350 97 No FP,No S,Yes 0
<br /> MW-5 (60) 08/12/97 937 3276 -2339 E 3,600 260 12 260 350 110 No FP,No S, Yes 0
<br /> MW-5 (61) 11/18/97 937 3249 -23 12 E 1,300 180 12 18 88 *<25 No FP,No S,No 0
<br /> MW-5 (61 5) 02/16/98 937 2914 -1977 SE 630 110 <2 5 22 83 44 No FP,No S, Yes 0
<br /> MW-5 (60) 06/23/98[P] 937 2661 -1724 SE 702 504 791 333 366 473 No FP,No S,Yes 0
<br /> MW-5 (60) 09/29/98[P] 937 2839 -1902 E 1,790 242 <5 121 135 145 No FP,No S,Yes 0
<br /> MW-5 (60) 12/30/98[P] 937 2622 -1685 SE 275 19 <0 5 605 0 629 382 No FP,No S,Yes 0
<br /> MW-6 (58) 02/15/95 895 4002 40 00 -3107 E <50 <0 5 <0 5 <0 5 <0 5 NA No FP,No S, O=NE
<br /> MW-6 (58) 05/12/95 895 3826 -2931 E <50 <05 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-6 (59) 08/29/95 895 3991 -3096 E *<52 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-6 (58) 12/04/95 895 3838 -2943 E *<70 <0 5 <0 5 <0 5 <0 5 NA No FP,No S,No 0
<br /> MW-6 02/02/96 895 3638 -2743 E <50 <05 <0 5 <05 <0 5 NA No FP,No S,No 0
<br /> ME 1ARC0105481QTRLY10548Q498 XIS ���
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