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r r rr r � � rr r rr �r �r ■� � <br /> Table A-1 <br /> Historical Groundwater Analytical Results <br /> San Joaquin County Human Services Agency <br /> Analyte Concentrations tuglL) <br /> Well Groundwater Total <br /> No Sample Date Elevation(ft) Benzene Ethylbenzene Toluene Xylene(total) TPH-g TPH-e Lead <br /> MW-21 s 12/11/02 NM 11,000 550 ND(100) ND(140) 25,000 - -- <br /> 12/11102 (dup) NM 11,000 760 ND(100) ND(100) 28,000 -- - <br /> 06/11/03 NM 11,000 680 ND(100) 860 25,000 - - <br /> 6111103 (dup) NM 11,000 600 ND(100) 740 24,000 - -- <br /> 1016103 NM 9,400 360 ND(50) 270 24,000 -- - <br /> 1113104 NM 15,000 ND(50) ND(50) 270 27,000 -- -- <br /> 3131104 NM 12,000 160 ND(50) ND(50) 25,000 - - <br /> 6125104 NM 11,000 360 ND 540 16,000 - -- <br /> 6125104 (dup) NM 11,000 370 120 530 17,000 -- -- <br /> 9115104 NM 11,000 440 ND(o50) 470 22,000 - -- <br /> 12l17104 NM 8,900 100 ND(050) ND(o50) 15,000 -- -- <br /> 12/17/04 (dup) NM 8,700 110 ND(o5o) ND(050) 14,000 -- -- <br /> 03/22/05 NM 14,000 120 NIDIasn, 140 1 21,000 -- <br /> MW-2A 7125195 -2982 7,000 3,800 3,300 11,000 79,000 -- -- <br /> 8130196 -2547 2,300 2,500 100 3,600 22,000 <br /> 1214196 -2513 2,000 1,900 160 2,800 17,000 -- -- <br /> 2124197 -2190 1,900 1,300 F-940 2,600 19,000 -- -- <br /> 2of 13 <br />