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Appendix B: Historical Analytical Results for Volatile Organic Compounds <br /> 2010 Annual Report <br /> Former Nestle USA, Inc. Facility, Ripon, CA <br /> USEPA Method 8010,8021,8260 or 524 in micrograms per liter(ppb) <br /> Well Name/ Sampling Method Average PDB Current <br /> Location (Purge/PDB) Depth(ft bgs) Sampling Sample Date cis-1.2-DCE TCE VC Comments/Other Detected VOC's <br /> Fre uenc <br /> Purge 04/01/1991 <0.5 25 <0.5 1,2-DCP:2 <br /> Purge 07/01/1991 25 79 <0.5 <br /> Purge 10/01/1991 29 127 <0.5 Iso-benzene:0.9,Tol:4.1,Tol:0.8;CF:1.1 <br /> Purge 03/01/1992 6.4 43 <0.5 CF:0.7 <br /> Purge 06/01/1992 34 132 <0.5 <br /> Purge 10/01/1992 35 122 <0.5 CF:2.3 <br /> Purge 10/01/1992 22 134 <0.5 DUP;CF:1.1 <br /> Purge 01/01/1993 1.9 25 <0.5 <br /> Purge 04/01/1993 25 105 <0.5 <br /> Purge 08/01/1993 5.1 27 <0.5 <br /> Purge 01/01/1994 12 65 <0.5 <br /> Purge 03/01/1995 4.4 41 <0.5 1,2-DCA:0.8 <br /> Purge 04/01/1996 24 130 <0.5 <br /> Purge 04/01/1997 <0.5 24 <0.5 <br /> Purge 04/30/1998 2.9 21 <0.5 <br /> Purge 04/08/1999 1.1 7.9 <0.5 <br /> Purge 04/13/2000 0.8 7.7 <0.5 <br /> Purge 05/01/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/17/2000 <0.5 <0.5 <0.5 <br /> Purge 04/11/2001 <2.0 <2.0 <2.0 <br /> Purge 10/11/2001 <0.5 <0.5 <0.5 <br /> Purge 05/09/2002 0.7 4.4 <0.5 <br /> Purge 05/07/2003 17 39 2.6 <br /> Purge - 04/23/2004 17 37 2.8 <br /> PDB 91.5 04/22/2005 3.2 19 0.5 <br /> PDB 91.5 04/22/2005 3.1 18 <0.5 DUP <br /> PDB 96.5 04/22/2005 4.9 20 1.3 <br /> PDB 101.5 04/22/2005 4.7 20 1.4 <br /> PDB 101.5 04/22/2005 5 19 1.3 DUP <br /> PDB 106.5 04/22/2005 4.8 19 1.4 <br /> PDB 101.5 A 04/18/2006 2.3 12 <0.5 <br /> PDB 101.5 A 04/25/2007 1.6 5.9 <0.5 <br /> PDB 101.5 A 04/28/2008 1.3 7.5 <0.5 <br /> PDB 101.5 A 04/23/2009 1.1 5.1 <0.5 <br /> PDB 101.5 A 04/19/2010 <0.50 1.7 <0.50 <br /> M-13B Purge - 03/01/1989 <0.5 <0.5 <0.5 <br /> Purge 11/01/1989 <0.5 <0.5 <0.5 <br /> Purge 03/01/1990 <0.5 <0.5 <0.5 <br /> Purge 07/01/1990 <0.5 <0.5 <0.5 <br /> Purge 07/01/1990 <0.5 <0.5 <0.5 DUP <br /> Purge 09/01/1990 <0.5 <0.5 <0.5 <br /> Purge 12/01/1990 <0.5 <0.5 <0.5 <br /> Purge 04/01/1991 <0.5 <0.5 <0.5 <br /> Purge 07/01/1991 <0.5 <0.5 <0.5 <br /> Purge 07/01/1991 <0.5 <0.5 <0.5 DUP <br /> Purge 10/01/1991 <0.5 <0.5 <0.5 Tol:4.7 <br /> Purge 03/01/1992 <0.5 <0.5 <0.5 <br /> Purge 06/01/1992 <0.5 <0.5 <0.5 <br /> Purge 10/01/1992 <0.5 <0.5 <0.5 <br /> Purge 01/01/1993 <0.5 <0.5 <0.5 <br /> Purge 04/01/1993 <0.5 <0.5 <0.5 <br /> Purge 08/01/1993 <0.5 <0.5 <0.5 <br /> Purge 01/01/1994 <0.5 <0.5 <0.5 <br /> Purge 01/01/1994 <0.5 <0.5 <0.5 DUP <br /> Purge 03/01/1995 <0.5 <0.5 <0.5 <br /> Purge 04/01/1996 <0.5 <0.5 <0.5 <br /> Purge 04/01/1997 <0.5 <0.5 <0.5 <br /> Purge 05/01/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/17/2000 <0.5 <0.5 <0.5 <br /> Purge 04/11/2001 <2.0 <2.0 <2.0 <br /> Purge 05/07/2002 <0.5 <0.5 <0.5 <br /> Purge 05/05/2003 <0.5 <0.5 <0.5 <br /> Purge - 04/15/2004 <0.5 <0.5 <0.5 <br /> PDB 27.5 04/21/2005 <0.5 <0.5 <0.5 <br /> PDB 27.5 04/21/2005 <0.5 <0.5 <0.5 DUP <br /> PDB 32.5 04/21/2005 <0.5 <0.5 <0.5 <br /> PDB 37.5 04/21/2005 <0.5 <0.5 <0.5 <br /> Page 21 of 93 <br />