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Table 6
<br /> Historic Groundwater Sample TPH-G and BTEX Analytical Results
<br /> The Earth9rains Company
<br /> 2651 South Airport Way, Stockton, California
<br /> Sample Date Concentration u
<br /> 1 ID TPH-G Benzene Toluene Eth (benzene Total Xylenes
<br /> MW-1 7/10/1987 78,000 6,800 17,000 ND(0 3) 4,100
<br /> 4/26/1988 NA 2,300 9,000 970 81000
<br /> 3/19/1990 17,300 5,120 13,000 1,380 10,500
<br /> 12/20/1990 9,500 7,100 17,500 1,800 14,200
<br /> 4/9/1992 65,900 1,620 51850 690 5,120
<br /> 8/19/1992 96,000 4,720 13,700 1,780 14,000
<br /> 12/23/1992 88,000 2,650 9,140 740 9,840
<br /> 4/7/1993 196,000 2,300 11,200 1,840 15,300
<br /> 7/30/1993 53,000 11900 6,500 1,300 11,000
<br /> 10/21/1993 41,000 2,200 6,400 1,400 11,000
<br /> 12/29/1993 67,000 1,700 4,900 1,500 9,600
<br /> 3/23/1994 69,000 2,000 7,900 1,500 12,000
<br /> L 6/7/1994 34,000 1,500 5,700 1,200 10,000
<br /> 9/8/1994 28,000 1,500 3,200 1,200 8,400
<br /> 2/12/1996 26,000 2,400 3,000 1,200 5,500
<br /> 5/14/1996 27,000 960 3,400 680 5,100
<br /> 9/18/1996 24,000 780 2,600 950 3,400
<br /> 12/16/1996 23,000 890 2,800 570 3,800
<br /> 7/15/1997 22,000 820 2,600 550 3,500
<br /> 10/23/1997 24,000 500 1,800 1,100 4,400
<br /> 1/29/1998 NA 950 2,700 730 4,400
<br /> 5/21/1998 NA 620 2,300 1,300 6,700
<br /> 10/28/1998 16,000 170 540 720 3,400
<br /> 5/28/1999 17,000 240 500 760 2,400
<br /> 8/18/1999 15,000 630 710 440 1,500
<br /> 11/8/1999 20,000 1,400 1,300 840 2,400
<br /> 3/13/2000 12,000 280 590 490 1,560
<br /> 7/2/2000 20,000 1,200 1,400 930 3,200
<br /> 10/19/2000 16,000 560 390 380 1,700
<br /> 1/18/2001 18,000 840 720 490 2,100
<br /> 4/19/2001 17,000 950 1,000 530 2,500
<br /> 7/19/2001 20,000 970 760 530 2,600
<br /> 10/24/2001 11,000 190 ND(25) ND(25) 31
<br /> 1/24/2002 18,000 910 1,000 600 3,000
<br /> * 4/26/2002 1,100 18 23 55 180
<br /> 8/2/2002 650 29 36 1 9 16
<br /> 11/6/2002 110 ND(0 5) ND(0 5) ND(0 5) ND(1 0)
<br /> 2/5/2003 28,000 67 63 580 3,600
<br /> 2/25/2003 14,000 160 45 230 1,500
<br /> 6/24/2004 14,000 31 35 310 1,800
<br /> 10/11/2004 12,000 180 57 290 1,700
<br /> ENV!62400132/121382eg 1 Investigation and Quarterly Reports/Histonc TPH+BTEX Results XLS/Historic
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