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iTA131_E 2
<br /> GROUNDWATER A\aLYTICAL DATA
<br /> Knowles-Rock
<br /> Stockton, California
<br /> Page 4 of 15
<br />' (in parts per billion)
<br /> Welh Date:-' � TPHg, �:'� Benzene;; nwToluene ' �Ethylben�ene �ylersesE� MTBE
<br /> MW-4 5/24/2001 92 000 29 000 36 2,500 2,100 3,100
<br /> Confd 8/30/2001 67 000 17,000 67 2,200 2,300 3,200
<br /> 12/7/2001 58,000 17,000 120 11000 1,700 8,300
<br /> 2/21/2002 40,000 18 000 120 760 700 10,000
<br /> 5/22/2002 35,000 8,900 <12 5 860 510 15,000
<br /> 8/27/2002 33,000 7,500 23 1,300 780 14,000
<br /> 11/14/2002 39,000' 8,500 43 1,700 1,200 4,700
<br /> 2/21/2003 37,000 6,500 28 750 750 5,300
<br /> 5/29/2003 28,000 6,400 17 45 100 10,000
<br /> 8/28/2003 29 000 6 000 41 38 500 7,500
<br /> 11/20/2003 27 000 6-500 69 87 t 1,200 8,500
<br /> 2/27/2004 18 000`" 3,600 57 35 87 9,200
<br /> 5/21/2004J 12 000 4 400 78 46 110 5,9€10
<br /> MW-5 5/16/1995 12 000 1 400 42 890 320 --
<br /> 11/9/1995 20,000 2 700 <25 11900 1600 -
<br /> 2/9/1995 14 000 11400 <10 1,800 420
<br /> 4/25/1996 19 000 1,700 43 1500 750 --
<br /> 8/8/1996 22 000 2.600 ?2 900 850 --
<br /> 11/6/1996 25,000 3,200 20 1,300 1,200
<br /> 2/6/1997 19,000 2,600 180 1,100 1,200 --
<br />' 5/8/1997 17000 2 200 1-10 1 600 1,700 --
<br /> 7/23/1997 20,000 3,800 51 1,200 1,700 <40
<br /> 11/20/1997 20,000 3,800 42 1,200 1,500 <5 0
<br /> 2/27/1998 34,000 5,400 400 1,400 2,200 <30
<br /> 5/6/1998 38,000 5,300 450 1400 2,400
<br /> 8/12/1998 29,000 6,600 230 1,600 2,400 --
<br /> 11/11/1998 19,000 3,600 <40 990 2,000 Y+
<br /> 2/12/1999 20 000 3,900 54 1,100 1,400
<br /> 5/4/1999 21,000 3,100 32 980 1,200
<br />' 8/5/1999 23 000 3,400 56 840 950 --
<br /> 11/18/1999 18,000 2,800 71 790 890 <50
<br /> 2/4/2000 17,000 2,400 31 490 880 <5 0
<br /> 5/9/2000 16,000 2,200 27 710 1,200 <5 0
<br /> 8/16/2000 32 000 3,900 76 1,600 3,200 <25
<br /> 11/21/2000 32,000 2,600 120 1,000 1,500 <100
<br /> 3/8/2001 22 000 1,800 81 1,100 1,500 <100
<br /> 5/24/2001 25,000 2,800 97 1,500 1,700 <40
<br /> 8/30/2001 21,000 1,800 180 940 1,400 <40
<br /> I12/7/2001 17,000 2,200 270 770 1,100 <20
<br /> . 2/21/2002 11,000 1,400 150 580 790 <2 0
<br />' 5/22/2002 28,()00 3,300 360 1,300 2,000 <20
<br /> 8/27/2002 36,000 4,000 480 1,200 2,200 <10
<br /> 11/13/2002 7,500- 610 08 200 290 <20
<br />' 2/20/2003 18 000 11500 18 550 750 <20
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