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Table 4 <br /> Historical Groundwater Sample TPH-G and BTEX Analytical Results <br /> The Earthgrams Company <br /> Stockton, California <br /> Concentration (ug/f) <br /> LWell Date TPH-G Benzene Toluene Ethylbenzene Total Xylenes <br /> SP-2 11/08/1999 4,000 24 11 15 17 <br /> *" 03/13/2000 ND (50) 39 ND (0 5) 13 72 <br /> 07/02/2000 3900 25 48 19 53 <br /> 10/19/2000 6100 33 46 ND(5 0) 2,100 <br /> 01/18/2001 3300 ND(0 5) 8 5 11 18 <br /> 04/20/2001 8200 35 ND(10) 17 37 <br /> 07/19/2001 6700 11 19 16 29 <br /> 10/24/2001 5600 68 11 18 40 <br /> 01/24/2002 27000 710 710 810 2,200 <br /> *** 04/26/2002 4900 ND(0 5) 1 5 11 10 <br /> SP-5 08/18/1999 410 13 18 22 83 <br /> PZ-1 10/27/1994 21,000 4,200 2,500 1,300 4,800 <br /> (see note) 11/15/1994 12,000 1,800 1,400 350 3,100 <br /> 08/18/1999 21,000 3,700 2,800 820 3,500 <br /> 1 11/08/1999 1,800 190 38 87 71 <br /> ** 03/13/2000 1,400 190 84 44 170 <br /> 07/02/2000 1,400 230 69 120 140 <br /> 10/19/2000 35,000 4,600 5,200 1,600 6,100 <br /> 01/18/2001 4,700 620 570 190 890 <br /> 04/20/2001 6,700 650 750 410 850 <br /> 07/18/2001 23,000 3,700 3,200 1,300 5,300 <br /> 10/23/2001 33,000 5,100 4,900 1,700 7,100 <br /> 01/24/2002 24,000 3,800 2,800 1,300 5,200 <br /> *** 04/26/2002 2,800 370 56 160 190 <br /> 1 <br /> env/624001321121382eg/stockton/histlab <br />