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• � g <br /> �e 3014 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former ARCO Service Station 114493 <br /> 205 N Center St Slocldon,CA <br /> Well Depth Groundwater Groundwater Ethyl Xylenes MtSE M1BE <br /> Well Date Elevation to Water Elevation Elevation TPHg Benzene Toluene benzene (total) (8020) (8260) DO <br /> Number Sampled fl MSL ft TOC ft MSL Change N b b b b b b b m /L <br /> MW-8M 6/12/2002 NP 1276 1600 324 -- 4,700 69 90 650 490 — 7 — <br /> 9/16/2002 NP 1782 506 1 82 3,100 25 89 700 230 20 -- <br /> 12/5/2002 P 1866 -590 0 84 <50 <0 5 0 5 6 3 1 4 <0 50 2 8 <br /> 3/14/2003 P 1858 -582 008 <50 <0 5 <0 5 <0 5 <0 5 — <0 5 3 7 <br /> MW-8D 6/12/2002 P 1277 1734 4 57 — 2,000 70 35 370 92 46 <br /> 9/1612002 P 1791 -514 0 57 11100 32 11 230 35 — 71 <br /> 12/5/2002 P 1895 -618 1 04 900 16 <0 5 32 <5 0 49 2 7 <br /> 3/14/2003 P 1882 -605 013 470 20 <2 5 <25 <2 5 -- 22 1 3 <br /> MW 9M 6/12/2002 P 1300 1924 6 24 — 770 37 7 7 110 9 4 44 <br /> 9/1612002 P 1692 -392 232 50 2 7 <1 0 2 4 <1 0 56 — <br /> 12/5/2002 P 1825 625 1 33 <50 <0 5 <0 5 <0 5 40 5 — 2 4 2 1 <br /> 311412003 P 1854 556 -031 <50 <05 <05 <05 <05 063 44 <br /> MW 9D 611242002 P 1298 1643 345 460 27 4 6 69 7 4 — 22 <br /> 9/16/2002 P 1705 -407 0 62 140 5 7 <1 0 <1 0 <1 0 — 50 -- <br /> 12/5/2002 P 1826 528 1 21 86 2 4 <1 0 <1 0 <1 0 -- 15 2 0 <br /> 3/14/2003 P 1828 -626 0 0 <50 <0 5 <0 5 <0 6 <0 5 — <0 5 4 0 <br /> MW 10M 6/12/2002 P 1076 1493 -417 430 12 087 <0 50 1 2 -- 58 <br /> 9/16/2002 P 1481 405 012 <50 <1 <1 0 <1 0 <1 0 2 6 <br /> 12/5/2002 P 1602 -526 1 21 <50 <1 <1 0 <1 0 <1 0 <1 0 1 5 <br /> 111412003 P 1612 -536 -0 10 <50 <0 5 <0 5 <0 5 <0 5 -- <0 5 2 2 <br /> I <br /> MW 10D 5/12/2002 NP 1064 1421 3 57 -- 87 1 9 <0 5 <0 5 <0 5 -- 31 — <br /> 9/16/2002 NP 1465 -401 -044 <50 <0 5 <0 5 <0 5 <0 5 -- 1 6 <br /> 12/5/2002 P 1596 5 32 131 <50 <0 5 <0 5 1 1 <0 5 -- 1 0 2 3 <br /> 311412003 P 1589 -5 25 007 <50 <0 5 <0 5 <D 5 <0 5 0 64 1 <br /> MW-11 M 12/5/2002 P 11 76 2042 866 — <50 <1 0 <1 0 <1 0 <1 0 55 41 <br /> 3/1412003 P 2036 -860 006 130 <1 0 <1 0 010 <1 0 — 110 0 9 <br /> MW-i 1 D 12/5/2002 P 11 72 2064 892 <50 <i 0 <1 0 <1 0 1 1 2 2 3 2 <br /> 3/1412003 P 20 41 -869 0 23 <50 <0.5 <0 5 <05 <0 5 3 5 3 2 <br /> TB 1 12/31/2001 -- <50 <0 50 <0 50 <0 50 <0 50 -- , <br /> QCTB 3/13/2002 — — <50 <0 50 <0 50 <0 50 <0 50 — — <br /> Notes <br /> TPHg=Totaf petroleum hydrocarbons as gasoline <br /> , <br /> MtBE=Methyl tert butyl ether <br /> DO=Dissolved oxygen <br /> It=feet <br /> MSL=mean sea level <br /> TOC=lop of casing <br /> ppb=parts per billion <br /> mg&=milligrams per liter <br /> P/NP=purged/not purged <br /> K4Wp,.m.W-BP A9(XM449MQUMiNNMI QTR0M44930WMR1Q03 <br />