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TABLE GROUNDWATER ANALYTICAL DATA Knowles-Rock Stockton,California Page 2 of 15 • (in parts per billion) e MW-2 7/23/1997 76,000 10,000 1,200 2,800 14,000 <100 Cont'd 11/21/1997 92,000 7,900 4,500 2,900 15,000 <20 2/27/1998 2,600 68 18 30 150 <5.0 516/1998 2,400 97 34 16 140 8/12/1998 2,000 100 87 43 210 11/10/1998 4,400 280 210 130 530 2/12/1999 790 110 14 16 74 5/4/1999 850 54 46 46 100 8/3/1999 710 59 40 38 93 11/17/1999 110 6.9 <0.5 <0.5 3.8 <5.0 2/4/2000 210 38 1.3 5.1 5.4 <5,0 5/9/2000 6,600 760 170 510 700 <25 8/15/2000 <50 <0,5 <0.5 <0.5 <0,5 <0.5 11/22/2000 290 32 <0.5 9.8 7.1 <5.0 3/7/2001 5,200 440 140 180 600 <4.0 5/24/2001 3,100 510 17D 120 320 <2.0 8/30/2001 81 6.2 1.1 1.3 5.6 <2.0 12/6/2001 Not Sampled 2/21/2002 540 89 5.4 1 27 49 <2.0 5/22/2002 Not Sampled 8/27/2002 290 20 11 1 12 41 <2.0 11/3/2002 Not Sampled 2/20/2003 4,200 230 35 1 150 330 66 5/29/2003 Not Sampled 8/28/2003 2,000 75 49 _I _ 46 180 <2.0_ 11/1912003 Not Sampled 2/26/2004 4,600 660 6.4 1 160 3�10 �<2.0 5/20/2004 Not Sampled 8/2512004 15,000 1,700 750 1 1,100 3,700 <20 1 111 /2004 Not Sampled 2/23/2005 17,000 3,200 20 1 1,300 1,400 26 5/25/2005 Not Sampled MW-3 5/16/95- Not Sampled 11/9/1995 2/8/1995 350 <0.5 <0,5 <0.5 <0.5 4/24/1996 110 <0.5 <0.5 <0.5 <0.5 817/1996 140 <0.5 <0.5 <0.5 <0.5 11/5/19961 190 1.7 <0.5 <0.5 <0.5 2/5/1997 180 30 <0.5 <0.5 <0.5 517/1997 270 100 <0,5 <0.5 <0.5 7/23/1997 620 120 <0.5 <0.5 <0.5 <5.0 11/20/1997 550 59 <0.5 <0.5 <0.5 <5.0 2/27/1998 770 86 <0.5 6.3 20 <5.0 5/6/1998 640 50 <0.5 10 52 19 8112/1998 690 220 <0.5 44 49 27 11/10/1998 1,600 360 <1.0 11 47 220 00 2/12/1999 �6.000 4,600 54 160 740 1,600 5/4/L999 6 10 68 96 1 1,400 �OE