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TABLE GROUNDWATER ANALYTICAL DATA Knowles-Rock Stockton,California Page I of 15 (in parts per billion) MW-1 05/16/95- Not Sampled 11191199T 2/9/1995 3,400 57 11 44 48 4/25/1996 2,900 9.4 7.8 9.8 10 8/8/1996 1,800 4.9 2.8 <0.5 8.6 11/6/1996 970 1.9 <0.5 <0.5 5.4 2/6/1997 1,100 3.3 <0.5 <0.5 <0.5 5/8/1997 850 12 <0.5 <0.5 <0.5 7/23/1997 690 <0.5 <0.5 <0.5 <0.5 <5.0 11/20/1997 Soo <0.5 <0.5 <0.5 <0.5 2/27/1998 530 <0.5 <0.5 <0.5 <0.5 <5.0 5/6/1998 440 <0.5 <0.5 <0.5 <0.5 <5.0 8/12/1998 320 <0.5 <0.5 <0.5 <0.5 <1.0 11/10/1998 430 <0.5 <0.5 <0.5 <0.5 <L0 2/12/1999 260 <0.5 <0.5 <0.5 <0.5 <t.0 5/4/1999 170 <0.5 <0.5 <0.5 <0.5 <5,0 8/3/1999 190 <0.5 <0.5 <0.5 <0.5 <5,0 11/17/1999 230 <0.5 <0.5 <0.5 <0.5 <5.0 I' 2/4/2000 400 4.7 2.9 1.0 2.5 <5.0 519/2000 440 4.0 <0.5 0.6 <0.5 <5.0 8/15/2000 180 2.2 <0.5 0.7 1.9 <5.0 11/22/2000 160 1.5 <0.5 <0.5 0.7 <5.0 3/7/2001 500 3.9 <0_5 <0.5 <0.5 <10 5/2412001 330 3.8 <0.5 <0.5 <0,5 <2.0 8/30/2001 200 <0.5 <0.5 <0.5 <0.5 <2.0 12/6/2001 Not Sampled 2/21/2002 200 <0.5 <0.5 1 _<0.5 <0.5 5/22/2002 Not Sampled 8/27/2002 160 2.0 <0.5 1 0.7 1.5 <2.0 11113/2002 Not Sampled 2120/2003 150 <0.5 <0.5 <0.5 <i.o <2.0 ' ' 5/29/2003 Not Sampled 8/28/2003 140 1.7 <0.5 1 <0.5 <1.0 <2.0 11/19/2003 Not Sampled 2/26/2004 220 2.6 <0.5 1 <0.5 <1.0 <2.0 5/20/2004 Not Sampled 8/25/2004 86 <0.5 F <0.5 1 <0.5 <1.0 <2.0 11/17/2004 Not Sampled 2/23/2005 130 <0.5 <0.5 ,I.._ <0.5 <1.0 6.4 MW-2 5/16/95- Not Sampled 11/9/1995 2/9/1995 120,000 12,000 2,900 3,200 17,000 =Y 4/25/1996 110,000 10,000 5,600 3,300 16,000 8/8/1996 88,000 7,300 1,000 2,300 14,000 11/6/1996 90,000 8,700 2,700 1,600 15,000 2/6/1997 91,000 8,200 2,700 2,300 14,000 5/8/192.7 __ 72,000 8.9 2,200 152000