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TABLE 2 GROUNDWATER ANALYTICAL DATA Knowles-Rock Stockton,California Page 9 of 15 ' (in parts per billion) Well= Date . TPHg Benzene Toluene Ethylbenzene Xylenes MTB>; r MW-104 5/22/2002 <50 <0 5 <0 5 <0 5 <1 0 39 Cont'd 8/26/2002 Not Sampled 11/13/2002 <50 <0 5 <0 5 <0 5 <1 0 4 2 2/19/2003 Not Sampled 5/28/2003 <50 <0 5 <0 5 1 <0 5 <1 0 25 8/27/2003 Not Sampled 11/19/2003 <50 <0 5 <0 5I <0 5 <1 0 26 2/25/2004 Not Sampled 5/20/2004 <50 <0 5 <0 5 1 <0 5 <1 0 <2 0 8/25/2004 Not Sampled ' 11/17/2004 <50 <0 5 <0 5 <0 5 <1 0 <2-0 MW-11 5/16/1995 1 <50 <0 5 <0 5 <0 5 <0 5 11/9/1995 76 <0 5 <0 5 <0 5 <0 5 "- ' 2/8/1995 <50 <0 5 <0 5 <0 5 <0 5 -- 4/24/1996 76 <0 5 <0 5 <0 5 <0 5- 8/7/1996 1 69 <0 5 <0 5 <0 5 <0 5 -- ' 11/5/1996 72 <0 5 <0 5 <0 5 <0 5 == 2/5/1997 <50 <0 5 <0 5 <0 5 <0 5 5/7/1997 <50 <0 5 <0 5 <0 5 <0 5 -- • 7/22/1997 <50 <0 5 <0 5 <0 5 <0 5 <5 0 ' 11/19/1997 <50 <0 5 <0 5 <0 5 <0 5 <5 0 2/26/1998 <50 <0 5 <0 5 <0_5 <0 5 <5 0 5/5/1998 <50 <0 5 <0 5 <0 5 <0 5 <5 0 ' 8/11/1998 <50 <0 5 <0 5 <0 5 <0 5 <1 0 11/11/1998 <50 <0 5 <0 5 <0 5 <0 5 <1 0 2/10/1999 <50 <0 5 <0 5 <0 5 <0 5 <1 0 5/4/1999 <50 <0 5 <0 5 <0 5 <0 5 <5 0 ' 8/4/1999 <50 <0 5 <0 5 <0 5 <0 5 <5 0 11/18/19991 <50 <0 5 <0 5 <0 5 <0 5 <5 0 ' 2/3/2000 Not Sampled <50 <0 5 1 2 <a5l <5 0 5/9/2000 <5 0 8/14/2000 <50 <0 5 <0 5 <11/20/2000 <50 <0 5 <0 5 < <5 0 3/7/2001 <50 <0 5 <0 5 < <2 0 5/23/2001 <50 07 <0 5 < <2 0 8/30/2001 Not Sampled ' 12/6/2001 <50 <0 5 <0 5 <0 5 <1 0 31 2/20/2002 Not Sampled 5/22/2002 <50 <0 5 <0 5 1 <0 5 <1 0 71 ' 8/26/2002 Not Sampled 11/13/2002 <50 09 06 <0 5 13 23 2/19/2003 Not Sampled 5/28/2003 <50 <0 5 <0 5 <0 5 <1 0 26 8/27/2003 Not Sampled . 11/19/2003 <50 <0 5 <0 5 <0 5 <l 0 78 2/25/2004 Not Siinpled ' 5/20/2004 <50 <0 5 <0 5 <0 5 <1 0 120 8/25/2004 Not S impied 11/17/2004 <50 <0 5 <0 5 <0 5 <1 0 520