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ri �rr rr� 1r � rr r� rr r r <br /> Table A-1 <br /> Historical Groundwater Analytical Results <br /> San Joaquin County Human Services Agency <br /> Analyte Concentrations(µg1L) <br /> Well Groundwater Total <br /> No Sample Date Elevation(ft) Benzene Ethylbenzene Toluene Xylene(total) TPH-g TPH-e Lead <br /> MW-2A 2127101 -1519 39 44 ND 50) ND 50) 1,800 — — <br /> 2127101 (dup) -1519 35 40 36 5 7 1,700 — — <br /> I <br /> 5117101 -1494 38 29 45 64 950 — -- <br /> 5117101 (dup) -1494 43 33 50 51 1,100 — — <br /> 10/11/01 -1635 40 43 ND(O 5) ND(05) 1,000 — — <br /> 2/5102 -1619 25 20 ND(05) ND(05) 1,200 -- — <br /> 4117/02 -1624 310 56 ND(50)) 16 1,100 -- — <br /> 6125102 -1678 13 ND(05 ND(05) ND(05) 570 -- -- <br /> 9119/02 -1784 59 110 74 13 1,400 — -- <br /> 12/11/02 -1858 45 67 ND(50) ND(50) 1,300 -- -- <br /> 06/11/03 -1812 25 11 35 38 1,300 -- -- <br /> 1017103 -1919 26 27 48 27 1,700 -- — <br /> 1113104 -1923 48 130 65 27 2,600 — -- <br /> 3131104 -1872 110 130 95 52 1,800 — — <br /> 6125104 -1911 45 23 80 ND(50) 1,300 — -- <br /> 9115/04 -2010 13 49 23 48 1,400 — -- <br /> 12/17/04 1 -2064 78 93 ND 50) 94 2,000 -- -- <br /> 4of13 <br /> 1 <br />