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TABLE 2
<br /> GROUNDWATER ANALYTICAL DATA
<br /> Knowles-Rock
<br /> Stockton,California
<br /> Page 15 of 15
<br /> (in parts per billion)
<br /> Well Date TPHg Benzene Toluene Eth ]benzene Xylenes MTBE
<br /> VW-4 5/23/2002 1,600 23 82 8 2 20 s21 0
<br /> Coned 8/26/2002 Not Sampled
<br /> 11/14/2002 2,500 41 11 1 34 74 L <2 0
<br /> 2/19/2003 Not Sampled
<br /> 5/29/2003 1,900 25 80 1 26 65 <20
<br /> 8/27/2003 Not Sampled
<br /> 11/20/2003 1,900 47 15 38 94 12 0
<br /> 2/25/2004 Not Sampled
<br /> 5/21/20041 830 20 66 1 21 40 <2 0
<br /> 8/25/2004 Not Sampled
<br /> 11/18/2004 710 17 71 1 14 30 <2 0
<br /> 2124105- Not Sampled
<br /> 6/8/2006
<br /> VW-5 2/2/2000 2,200 25 13 28 12 <5 0
<br /> 2/2/2000 800 12 24 26 17 <5 0
<br /> 5/11/2000 920 18 35 47 78 <5 0
<br /> 8/16/2000 1,100 86 29 76 32 <5 0
<br /> 11/20/2000 400 13 is 6 8 77 <50
<br /> 3/8/2001 660 39 to 51 17 <2 0
<br /> 5/24/2001 940 8 2 23 10 33 1 <2 0
<br /> 8/30/2001 Not Sampled
<br /> 12/7/2001 500 41 10 1 36 43 <2 0
<br /> 2/20/2002 Not Sampled
<br /> 5/23/2002 2,400 <0 5 13 21 380 <2 0
<br /> 8126/02- Not Sampled
<br /> 6/8/2006
<br /> VW-6 11/18/1997 - -- <135
<br /> 2/25/1998 14,000,000 6,600 43,000 100,000 720,000 <30
<br /> 2/3/2000 28,000 420 840 410 2,600 X50
<br /> 5/11/2000 11,000 410 920 250 1,400 <100
<br /> 8/17/2000 35,000 640 1,200 700 4,300 <100
<br /> 11/21/20001 43,000 1 580 1 1,700 710 3,900 <40
<br /> 3/8/2001 63,000 1,500 8,900 1,200 7,200 <100
<br /> 5/25/2001 68,000 1,200 9,000 1,500 9,000 <100
<br /> 8/30/2001 Not Sampled
<br /> 12/7/2001 50,000 400 964 730 3,800 <50
<br /> 2/20/2002 Not Sampled
<br /> 5/23/2002 13,000 10 51 43 1,500 <40
<br /> 8/27/2002 40,000 590 810 1,100 59300 <20
<br /> 11/14/2002 54,000 680 1,200 1 1,400 7,400 <100
<br /> 2119/2003 Not Sampled
<br /> 5/29/2003 41,000 510 780 1,200 4,900 <100
<br /> 8/27/2003 Not Sampled
<br /> 11/20/2003 180,000 24,000 34,000 3,400 22,000 <40
<br /> 2/25/2004 Not Sampled
<br /> 5/21/2004 29,000 880 920 1 2,000 7,300 <100
<br /> 8/25/2004 Not Sampled
<br /> 11/18/20041 34,000 980 1,500 1 730 2,240 <10
<br /> 2124105- Not Sampled
<br /> 6/8/2006
<br /> NOTES
<br /> . TPHg Total petroleum hydrocarbons as gasoline
<br /> MTBE Methyl tert butyl ether
<br /> < = Less than indicated detection hint
<br /> Not Analyzed
<br /> * Gasoline is primarily composed of benzene
<br /> ++ = Gasoline is pnmenly composed of methyl tert butyl ether
<br />
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