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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 04/01/1997 5.8 7.7 <0.5 <br /> Purge 05/01/1998 2.8 5.2 <0.5 <br /> Purge 04/08/1999 5.4 8.3 <0.5 <br /> Purge 04/14/2000 2.5 4 <0.5 <br /> Purge 04/12/2001 <2.0 <2.0 <2.0 <br /> Purge 05/09/2002 3.2 7.9 <0.5 <br /> Purge 05/07/2003 20 36 7.8 <br /> Purge - 04/23/2004 18 49 9.3 <br /> PDB 94.5 04/22/2005 25 37 0.81 <br /> PDB 99.5 04/22/2005 14 92 <0.5 <br /> PDB 104.5 04/22/2005 3.1 4.7 2.3 <br /> PDB 109.5 04/22/2005 2.7 4.1 1.9 <br /> Purge - 05/10/2005 7.1 36 2.3 <br /> PDB 99.5 A 04/18/2006 2.2 4.2 1.4 <br /> PDB 99.5 A 05/10/2007 1.7 16 <0.5 <br /> PDB 99.5 A 04/24/2008 0.52 1.4 <0.5 <br /> PDB 99.5 A 04/30/2009 <0.5 0.54 <0.5 <br /> PDB 99.5 A 04/28/2010 <0.50 <0.50 <0.50 <br /> M-36 Purge - 01/01/1987 NA 73 <0.5 CF:1 <br /> Purge 02/01/1987 NA 55 <0.5 CF:0.5 <br /> Purge 04/01/1987 <0.5 31 <0.5 <br /> Purge 07/01/1987 <0.5 23 <0.5 CF:0.5 <br /> Purge 10/01/1987 1.6 36 <0.5 MC:0.6;CF:0.5 <br /> Purge 06/01/1988 <0.5 45 <0.5 <br /> Purge 03/01/1989 0.6 34 <0.5 <br /> Purge 09/01/1990 <0.5 18.92 <0.5 <br /> Purge 12/01/1990 <0.5 18.2 <0.5 <br /> Purge 04/01/1991 <0.5 35 <0.5 <br /> Purge 07/01/1991 <0.5 18 <0.5 <br /> Purge 10/01/1991 <0.5 34 <0.5 Tol:3.8;CF:0.5 <br /> Purge 03/01/1992 <0.5 36 <0.5 <br /> Purge 06/01/1992 <0.5 39 <0.5 <br /> Purge 06/01/1992 <0.5 40 <0.5 DUP <br /> Purge 10/01/1992 <0.5 46 <0.5 <br /> Purge 01/01/1993 <0.5 61 <0.5 <br /> Purge 04/01/1993 <0.5 45 <0.5 <br /> Purge 08/01/1993 <0.5 20 <0.5 <br /> Purge 01/01/1994 0.9 43 <0.5 CF:0.8 <br /> Purge 03/01/1995 1.3 51 <0.5 CF:1.8 <br /> Purge 04/01/1996 1.4 38 <0.5 <br /> Purge 04/01/1997 <0.5 6.7 <0.5 <br /> Purge 05/01/1998 <0.5 7.5 <0.5 <br /> Purge 04/07/1999 0.5 11 <0.5 CF:0.7 <br /> Purge 04/18/2000 <0.5 12 <0.5 <br /> Purge 04/12/2001 <2.0 <2.0 <2.0 <br /> Purge 05/09/2002 <0.5 4.1 <0.5 <br /> Purge 04/29/2003 <0.5 4.3 <0.5 <br /> Purge - 04/16/2004 <0.5 2.9 <0.5 <br /> PDB 30 04/22/2005 <0.5 7.4 <0.5 <br /> PDB 35 04/22/2005 <0.5 7.5 <0.5 <br /> PDB 40 04/22/2005 <0.5 7.3 <0.5 <br /> PDB 35 A 04/18/2006 <0.5 15 <0.5 <br /> PDB 35 A 05/10/2007 <0.5 7.4 <0.5 <br /> PDB 35 A 04/24/2008 <0.5 3.6 <0.5 <br /> PDB 35 A 04/30/2009 <0.5 2.2 <0.5 <br /> PDB 35 A 04/28/2010 <0.50 3.5 <0.50 <br /> M-46 Purge - 01/01/1987 NA 8.2 <0.5 <br /> Purge 02/01/1987 NA 1.2 <0.5 <br /> Purge 04/01/1987 <0.5 5.5 <0.5 <br /> Purge 07/01/1987 <0.5 8.2 <0.5 <br /> Purge 10/01/1987 <0.5 9.8 <0.5 <br /> Purge 06/01/1988 NA 3.4 <0.5 <br /> Purge 03/01/1989 <0.5 3.8 <0.5 <br /> Purge 03/01/1992 <0.5 4.6 <0.5 <br /> Purge 01/01/1993 <0.5 <0.5 <0.5 <br /> Purge 08/01/1993 <0.5 4.2 <0.5 <br /> Purge 01/01/1994 <0.5 4 <0.5 <br /> Purge 03/01/1995 <0.5 3 <0.5 <br /> Purge 04/01/1996 <0.5 4.3 <0.5 <br /> Page 10 of 93 <br />