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! i i Page 2 of 7 Table i I Groundwater Elevation and Analytical Data ARCO Service Station#4932 E 16 E Harding Way Stockton,CA E "F Depth' ;Groundwata r, I.PH a - Groundwater Ethyl- Xylenes MtBE -z MtBE - f Wel] aatefm r EEevabon, to Water,_y;'Etevahon f y Thickness Elevation TPH9Y Benzene Toluene benzene (fatal) `8020 (8020/8260) DO '-Number;.,`w'Sa214ed r 1'- .(R AISL} -,(ft TOC} Y Ift MSt} 00 Change(h) (Ppb) (Ppb) (ppb) (ppb) (ppb) - (Ppb) OWL) MW-3 11/20/02 P 3117 -1947 000 -245 610 •' 56 54 50 58 660 14 002 (cont.) 01/30/03 P 3036 -1866 0 00 081 1,100 43 22 33 49 20 055 t 093 04/28/03 P 2970 -1800 000 0 66 1,000 34 22 45 92 - 088 1238 07129103' P 3110 -1940 000 -140 76 000 5 2 300 6,500 3 000 10 000 - <500 - 10/08-09/03 P 3265 -2095 0 00 -155 <50 <0 50 <0 50 <0 50 <0 50 - 076 0 38 01/17104 P 3214 -2044 000 0 51 <50 <0 50 <0 50 <0 50 <0 50 - 079 t 130 04126/04 P 3062 -18 92 000 162 <60 <0 50 <0 50 <0 50 <0 50 - 0 79 - 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 27 32 -15 34 000 -069 180,000 9,400 42 600 5 260 26 900 376,000 350 000 33 03/05/01 P 26 63 -1465 000 069 165 000 10 700 45 300 5,020 26 500 596 000 466 000 4 2 05108!01 P 2626 -1428 000 037 149,000 9 660 45 300 5 280 26 800 372,000 500 000 I 0 44 07/20101 P 2741 -1541 ' 0 02 -1 13 Not sampled 0 02 ft LPH present 10l22J01 29 92 -1759 046 -218 Not sampled 0 46 It 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 2 2 04/11/02 P 2710 -1512 000 2 81 140 000 9,700 33,000 8 100 37 000 160 000 160,000 f - 07/12/02 P 2921 -1723 000 -211 210 000 7100 31 000 10,000 41,000 190 000 150 000 26 11120/02 P 3164 -1966 000 -243 140,000 6 300 250 000 4 000 19 000 58 000 67 000 E 0 01 01/30/03 - - - - - Well unable to be sampled connected to remedial system 04!28!03 - - - - - Well unable to be sampled connected to remedial system 07/29103' P 3104 -1906 000 - 120,000 s 8 900 12,000 3 800 12 000 - 12 000 - 10117/03 P 3295 -2097 000 -191 21 000 1 500 2 700 810 4 100 - 7200 - 01/12/04 P dry - - - - 28 000 220 550 110 460 -- 33 - 04126104 P 3049 -18 51 000 - 29,000 2,200 5,200 690 4,200 - 350 - MW-5 07/20/01 P 1178 27 77 -1599 000 -- <50 <0 50 <0 50 <0 50 <0 50 <25 <2 0 - 10/22/01 P 29 72 -1794 0 DO -195 <50 <0 50 <0 50 <0 50 <0 50 <2 5 <2 0 112 01/15/02 P 2907 -1729 0 DO 065 <50 <0 50 18 <0 50 12 38 17 28 04/11/02 P 28 29 -1651 000 0 78 450 <0 50 <0 50 <0 50 <0 50 3 3 2 (4 0 07112/02 P 2929 -1751 000 -100 <50 <0 50 0 62 <0 50 <0 50 16 12 2 7 11/20/02 P 3189 -2011 000 -260 <50 <0 50 <0 50 <0 50 <0 50 35 31 017 01/30/03 P 3120 -1942 000 069 <50 <0 50 <0 50 <0 50 <0 50 13 14 140 04128/03 P 3046 -1868 000 0 74 <50 <0 50 <0 50 <0 50 0 61 - 39 182 07!29103' P 3183 -2005 000 -137 <50,000 a 1,300 3 800 1,800 5 900 -- <500 - 1 DIOS-09/03 P 3334 -2156 000 -151 <50 <0 50 12 <0 50 13 -- 21 0 71 01/12/04 P 3294 -2116 000 040 <50 <0 50 <0 50 <0 50 <0 50 - 21 120 04/26/04 P 3168 -1980 000 136 <5,000 <50 110 <50 86 - <50 - f Project!ARCO/49321Reports/Tables/2004 gwtables4932 As {c f t