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<br /> Table A-1
<br /> Historical Groundwater Analytical Results
<br /> San Joaquin County Human Services Agency
<br /> Groundwater ,
<br /> Analyte Concentration IL
<br /> Well No Sample Date Elevation (feet) Benzene Toluene Eth (benzene Xylene (Tota!L TPH- TPH-e Total Lead
<br /> MW-1 12 12/30/1988 NM ND (0 50) ND 0 50) ND (0 50 ND 0 50 ND (200 ND (500) ND 500)
<br /> MW-2'a _12/_3011_988_ _ NM 28,000 25,000 3,100 10,000 59,000 41,000 795
<br /> 5/21/1997 NM� 5,400 310 890 1,400 13,000 -- --
<br /> 12/16/1997 _ NM 1,500 1 17 1,100 1,000 9,100 -- -_
<br /> 5/19/1999 NM _ 8,700 ` ND (0 50) 2,600 2,700 38,000 --
<br /> 11/16/1999 NM 13,000 190 3,000 3,800 45,000 --
<br /> _ 31212000NM _14,000 ND 2,500 _ 550 20,000
<br /> 5/11/2000 NM 11,000 90 2,100 850 25,000
<br /> 8/10/2000 NM 9,700 620 2,500 35,000 22,000 -- --
<br /> 11/2/2000 NM 18,500 1 286 3,070 5,950 57,300 -- --
<br /> 2/27/2001 NM 13,000 - ND (100) 1,700 2,000 31,000 -- --
<br /> 5/17/2001 NM 15,000 1 61 1,800 2,000 27,000
<br /> 10/11/2001 NM 10,000 220 1,300 2,700 26,000 --
<br /> 215/2002_ NM 12,000 ! ND (50) 770 940 28,000 -- --
<br /> 411712002_ NM 10,000 ND 00) 810 1,000 25,000 --
<br /> _612_512002_ _ NM 10,000 f- 118'
<br /> 740 1,100 10,000 -- --
<br /> 6/25/2002 (dup) NM 9,900 E 24 940 1,300 12,000 --
<br /> 911912002_ _ NM 13,000 34 140 300 14,000 -- --
<br /> 121111_2002 _ NM _11,000_ ND (100) 550 ND (100) 25,000 --
<br /> 12!1112002 (dup) NM 11,000 ND (100) 760 ND (10 0) 28,000 -- --
<br /> 6/11/2003 NM 11,000 ND (100) 680 860 25,000 -- --
<br /> 6/11/2003 (dup) _ NM 11,000 1 ND (100) 600 740 24,000 -- --
<br /> 10/6/2003 _ NM 9,400 1 ND (50) 360 270 24,000 -- --
<br /> _1113/2004_ NM 15,000 ND (50) ND (50) 270 27,000 -- --
<br /> 313112004_ NM 12,000 ND (50) 160 ND (50) 25,000 -- --
<br /> _ 6/25/2004 NM 11,000 ND 360 540 16,000 -- --
<br /> 6/25/2004 (dup) NM 11,000 , 120 370 530 17,000 --
<br /> 9/15/2004 NM 11,000 ND (0 50) 440 470 22,000 -- --
<br /> 12/17/2004 NM 8,900 I ND (0 50) 100 ND (0 50) 15,000 -- --
<br /> 1211712004 (dup) _ NM 8,700 ND (0 50) 110 ND (0 50) 14,000 -- --
<br /> 312212005_ NM 14,000 ND (0 50) 120 140 21,000 -- --
<br /> 6/30/2005_ _ NM 6,900 23 350 120 12,000 -- --
<br /> 6/30/2005 (dup) NM 5,800 22 310 110 11,000 -- --
<br /> 9129/2005 NM 7,800 27 250 1 220 16,000 -- --
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