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Table 1 Page o of 31 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station 42133 <br /> 2908 Benjamin Holt Or,Stockton,California <br /> Well Depth Product Groundwater Groundwater Total <br /> Date Elevation to Water thickness, Elevation Elevation change TPH-G Benzene Toluene Ethylbenzene Xylenes MtBE DO <br /> Sampled (feet,MSL) (feet,TOC) in feet (feet,MSL) (feet) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) mgll <br /> MW-4 8/19/97 NP 1176 -922 -141 <50 <0 5 <0 5 <0 5 <0 5 <5 0 4 <br /> (cont) 11/25/97 NP 1191 -937 -015 <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 3/19198 P 5 67 -- -313 624 <50 <0 5 <0 5 <0 5 <0 5 <5 3 7 <br /> 6/24/98 P 7 71 -- -517 -204 <50 <0 5 <0 5 <0 5 <0 5 <5 3 0 <br /> 9/10/98 NP 940 - -686 -169 <50 <0 5 <0 5 <0 5 <0 5 <5 - <br /> 12/17/98 NP 945 -691 -005 <50 <0 5 <0 5 <0 5 <0 5 <5 - <br /> 3/10/99 P 723 -- -469 222 <50 <0 5 <0 5 <0 5 <0 5 <5 27 <br /> 6/22/99 NP 937 - -683 214 <50 <0 5 <0 5 <0 5 <0 5 <5 3 9 <br /> 9/13199 NP 11 00 -846 -1 63 <50 <0 5 <0 5 <0 5 <0 5 <5 2 9 <br /> 12/16/99 NP 1090 -- -836 010 <50 <0 5 <0 5 <0 5 <0 5 <2 5 1 1 <br /> 3/23100 P 617 -- -363 473 <50 <0 5 <05 <0 5 <0 5 <2 5 5 2 <br /> 6121100 P 8 48 - -5 94 -231 <50 <0 5 <0 5 <0 5 <0 5 <2 5 4 1 <br /> 9113/00 NP 1020 -- -766 -172 <50 <0 5 <0 5 <0 5 <0 5 <2 5 274 <br /> 12/15/00 P 965 -- -711 0 55 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 1 28 <br /> 3/2101 P 754 — -500 211 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 3 8 <br /> MW 5 316/95 1 04 12 91 -11 87 -1187 1,800 43 47 3 3 60 - - <br /> 6/2/95 1140 -- -1036 151 1,300 55 27 2 3 75 <br /> 9/11/95 1365 -- -1261 -225 1,500 87 3 91 29 <br /> 1215/95 1403 -- -1299 -038 2,200 120 <10(e) 16 11 - <br /> 3/18/96 1082 - -978 321 8,200 190 19 24 800 - <br /> 6/18/96 950 -846 132 15,000 170 <25 <25 2,500 <250 <br /> 9/25/96 1230 -1126 -280 3,800 130 <5 8 4 71 <50 - <br /> 12/4/96 11 63 - -1059 067 4,200 88 <2 15 44 <20 - <br /> 3/19/97 P 718 - -614 445 1,400 26 5 6 4 6 98 0 1 <br /> 6/5/97 P 884 - -780 -166 1,900 22 51 4 14 <10 0 2 <br /> 8/19197 NP 1025 -921 -141 <50 <0 5 <0 5 <0 5 <0 5 <5 0 2 <br /> 11/25/97 NP 1048 -- -944 -023 210 <0 5 <0 5 <0 5 <0 5 <5 <br /> 3120198 P 427 -- -323 6 21 <50 <0 5 <0 5 <0 5 <0 5 <5 2 2 <br /> 6124198 Well Box Inaccessible -- - -- - - <br /> 9110/98 P 779 - -675 -- <50 <0 5 <0 5 <0 5 <0 5 <5 <br /> 12/17/98 P 806 -- -702 -027 99 5 <0 5 <0 5 <0 5 <0 5 <5 <br /> 3/10/99 P 586 -482 220 806 <0 5 <0 5 <0 5 <0 5 <5 2 8 <br /> 6/22199 Well Box Inaccessible -- -- - - - <br /> 9/13/99 Well Box Inaccessible — — — — — — — — 1 <br /> 12/16/99 P 925 821 - 186 096 <0 5 <0 5 1 03 <2 5 3 3 <br /> 3123100 P 461 -357 4 64 355 0 620 <0 5 <0 5 128 <2 5 2 0 <br />