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+■�i � r r ■r r � ■r r rr r ■■r <br /> Table A-1 <br /> Historical Groundwater Analytical Results <br /> San Joaquin County Human Services Agency <br /> Analyte Concentrations(ug/L) <br /> Well Groundwater Total <br /> No Sample Date Elevation(ft) Benzene Ethylbenzene Toluene Xylene(total) TPH-g TPN-e Lead <br /> 5121197 -21 10 1,900 1,200 710 1,800 17,000 - -- <br /> MW-2A <br /> 9119197 -2184 920 870 150 550 11,000 - <br /> 12/16/97 -2201 200 160 14 50 1,400 - - <br /> I 3117198 -1854 1,300 1,000 520 1,800 12,000 - - <br /> 6118198 -1711 1,000 1,200 350 1,300 12,000 -- - <br /> 9117198 -1639 810 710 81 61 6,000 - - <br /> 12/10/98 -1625 610 530 71 330 7,200 - - <br /> 3122199 -1514 1,300 850 160 1,100 14,000 - - <br /> 5119199 -1473 640 550 110 470 10,000 -- - <br /> 5/19/99 (dup) -1473 2,900 1,200 150 1,300 17,000 - - <br /> 8110199 -1517 180 ND(50) ND(50) 200 6,500 - -- <br /> 8110199 (dup) -1517 210 ND(50) ND(50) 230 6,400 - - <br /> 11/16/99 -1594 54 220 ND 33 3,300 - - <br /> 312/00 -1514 400 290 27 130 3,900 - -- <br /> 5111100 -1426 250 160 ND(50) 60 2,900 - -- <br /> 8110100 -1487 ND(50) 130 ND(50) 12 2,100 - - <br /> 1112100 -1552 379 163 ND(5 0) ND 50 3,130 - - <br /> 3of13 <br />