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Tolf Pagoof 30 y <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2133 <br /> 2908 Benjamin Holt Dr,Stockton,CA <br /> Well Depth Product Groundwater Groundwater xylenes <br /> Well Date Elevation to Water Thickness Elevation Elevation TPHg Benzene Toluene Ethylbenzene (total) MtBE DO <br /> Number Sampled (ft,MSL) (ft,TOC) (ft) (ft,MSL) Change(ft) (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) (mg/L) <br /> 8/19/97 NP 1043 -- -917 -146 750 18 3 0 3 6 _ -19 1,900 0 1 <br /> 11/25/97 NP 1161 -- -1035 -118 10,000 1,000 320 200 1,400 46,000 - <br /> 3/20/98 P 4 65 -- -339 6 96 7,300 2,000 68 350 260 32,000 55 <br /> 6124/98 P 6 66 -- -540 -201 15,000 110 130 120 660 19,000 1 0 <br /> 9110/98 NP 832 -- -706 -166 196 6 86 1 18 123 617 1,870 <br /> 12/17/98 NP 842 -- -716 -010 5,020 1,230 51 6 239 313 17,600 <br /> 3110199 P 621 -495 221 1,620 235 142 71 9 85 9 3,980 8 2 <br /> 6/22199 NP 8 77 -- -751 -256 160 707 0 685 <0 5 <0 5 893 3 3 <br /> 9113199 NP 9 81 -- -855 -104 128 9 31 <0 50 <0 50 123 299 1 8 <br /> 12/16/99 NP 945 -- -819 0 36 10,800 2,290 60 7 433 515 17,800 t 4 <br /> 3/23/00 P 478 -- -352 4 67 1,520 161 <100 45 5 212 3,310 1 7 <br /> 6/21/00 P 704 -• -578 -226 3,770 434 367 560 286 429 006 <br /> 9/13100 NP 879 -- -7 53 -175 1,130 155 6 62 106 470 1 030 1 85 <br /> 12/15/00 P 825 -699 0 54 18,200 1,440 824 245 424 10,700 070 <br /> E-10 3/2/01 P 619 sheen -493 206 6,830 1,770 X50 0 131 228 19,600 - <br /> (cont) 5/10/01 P 6 62 - -536 -043 4,500 879 229 721 354 2,750 - <br /> E 11 8/26/88 342 -- -- -- -- - -- -- <br /> 11/28/88 -- -- -- -- - 440 380 110 460 - <br /> 2/27/89 -- -- - 400 250 120 820 <br /> 5130/89 -- -- -- - 437 162 97 281 - <br /> 8/22/89 -- -- -- -- -- 160 36 38 220 <br /> 12/4/89 -- -- -- - 240 26 38 290 <br /> 1/4/90 1839 -- -1497 - -- -- -- <br /> 2/1/90 1819 -- -1477 020 - -- -- <br /> 2/15/90 1818 -- -1474 003 - - -- <br /> 2/22/90 1893 -1551 -077 -- -- -- -- -- <br /> 3/8190 1791 - -1449 102 - 801 313 75 6 242 <br /> 415190 1817 -- -1475 -026 -- - -- -- -- <br /> 4119/90 1825 -• -1483 -008 - -- - <br /> 5110/90 1855 -- -1513 -030 -- -- <br /> 5/24/90 1850 - -1508 0 05 -- -- -- <br /> 615/90 1847 -- -1605 003 - -- - <br /> 6/19/90 1920 -- -1678 -073 135 166 20 111 <br /> 7/12/90 1930 -- -1588 -010 - - <br /> 8/16/90 1965 -- -1623 -035 - - - <br /> 9/17/90 1994 -- -1652 -029 -- - -- -- <br /> 9/19/90 1994 -- -1652 000 680 90 8 2 14 110 <br /> 10/11/90 2003 -- -1661 -009 - -- -- - - <br />