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� 40e2ot6 Table 1 Groundwater Elevation and Analytical Data ARCO Service Station#4932 16 E Harding Way Stockton CA W611 Depth Groundwater LPH Groundwater Ethyl- xylenes MtBE M1BE "-Well Date Elevation to Water Elevation Thickness Elevation TPHg Benzene Toluene benzene (total) 8020 (802018260) DO Numbe, .Sampled _ (f1,MSL) (ft,TOC) (ft,MSL) (H) Change(R) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) MW 3 04/28/03 P 2970 1800 000 0 66 1 000 34 22 45 92 - 068 2 38 (cont) 07/29/03' P 31 10 1940 000 -140 76 000 5 2 300 6 500 3 000 10 000 - <500 - 10108-09/03 P 3265 -2095 000 -1 55 <50 <0 50 <0$0 <0 50 <0 50 076 0 38 MW-4 09/05/00 P 1198 2663 1465 000 - 166 000 10 500 43 600 5,230 25,400 708 000 - - 11/02/00 P 2732 1534 000 -069 180 000 9 400 42 600 5 260 26 900 376 000 350 000 33 03/05/01 P 2663 -1465 0 00 069 165 000 10 700 45 300 5,020 26,500 596,000 466 000 42 05/08/01 P 2626 -1428 0 00 0 37 149 000 9 660 45 300 5 280 26,800 372,000 500 000 044 07/20/01 P 2741 -1541 ' 002 -1 13 Not sampled 0 02 it LPH present 10/22/01 2992 1759 ' 046 -218 Not sampled 0 46 ft LPH present 01/15/02 P 2991 1793 000 -0 34 140,000 7 900 39 000 6 000 29 000 77,000 90,000 22 04/11/02 P 2710 -1512 000 281 140 000 9 700 33 000 8 100 37 000 180 000 160 000 07/12102 P 2921 -1723 000 211 210,000 7,100 31,000 10,000 41,000 190 000 150,000 2 6 11/20/02 P 31 64 1966 000 243 140 000 6 300 250,000 4 000 19 000 58 000 67 000 001 01/30/03 - - - - Well unable to be sampled connected to remedial system 04/28/03 - - - - Well unable to be sampled connected to remedial system 07/29/03' P 31 04 -1906 000 - 120,000 5 8,900 12 000 3 800 12 000 12 000 - 10/17/03 P 32 95 -2097 0 00 -191 21,000 1,500 2,700 810 4,100 - 7,200 MW 5 07/20!01 P 11 78 2777 1599 000 - <50 <0 50 <0 50 <0 50 <0 50 <2 5 <2 0 - 10/22l01 P 2972 -1794 000 -1 95 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <2 0 1 12 01/15/02 P 2907 -1729 000 0 65 <50 <0 50 1 8 <0 50 1 2 3 8 1 7 2 8 04/11/02 P 2829 1651 000 0 78 <50 <0 50 <0 50 <0 50 <0 50 3 3 2 40 07/12/02 P 2929 1751 000 -100 <50 <0 50 0 62 <0 50 <0 50 18 12 2 7 11/20/02 P 31 89 -2011 0 00 2 60 <50 <0 50 <0 50 <0 50 <0 50 35 31 017 01/30/03 P 31 20 -1942 000 069 <50 <0 50 <0 50 <0 50 <0 50 13 14 1 40 04/28/03 P 30 46 1868 000 074 <50 <0 50 <0 50 <0 50 061 - 3 9 1 82 07129103" P 3183 2005 000 -137 <50 000 e 1 300 3,800 1,800 5,900 - <500 - 10/0"9/03 P 3334 -2156 000 -151 <50 <0 50 12 <0 50 13 -- 21 0 71 MW 6 07/20/01 P 11 50 2743 -1593 000 - <5 000 <50 <50 <50 <50 57,000 67 000 - 10/22/01 P 29 32 1782 000 189 <20,000 <200 <200 <200 <200 69 000 82 000 234-172 01/15/02 P 28 56 -1706 0 00 0 76 <50 000 <500 <500 <500 <500 44 000 65 000 - 04/11/02 P 2784 16 34 000 072 <50 000 <500 <500 <500 <500 61 000 57 000 38 07/12/02 P 2900 1750 000 1 16 31 000 '" <200 <200 <200 <200 67 000 43 000 32 11/20/023 P 31 43 -1993 000 2 43 30 000 2 <200 <200 <200 <200 42 000 57 000 0 08 01/30/03 P 30 68 -1918 3 000 075 <25,000 <250 <250 <250 <250 50 000 48,000 0 56 04/28/03 P 29 96 -1846 000 0 72 <50,000 <500 <500 <500 <500 30 000 1 27 07/29/03` P 31 44 -1994 000 148 <50,000 5 <500 <500 <500 <500 37,000 10/08-09/03 P 3298 -2148 0 00 -154 35,000 <250 <250 <250 <250 32,000 0 91 Project/ARCO/4932/Reports/Tables/4003 gwtables4932 As