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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 06/01/1992 2.6 1 <0.5 1,1-DCA:0.5;CF:0.7 <br /> Purge 10/01/1992 0.9 <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 CF:1.1 <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 04/01/1996 <0.5 27 <0.5 <br /> Purge 10/01/1996 <0.5 <0.5 <0.5 <br /> Purge 04/01/1997 0.6 0.8 <0.5 <br /> Purge 11/01/1997 <0.5 <0.5 <0.5 <br /> Purge 11/01/1997 <0.5 0.9 <0.5 DUP <br /> Purge 04/29/1998 <0.5 <0.5 <0.5 <br /> Purge 10/06/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 10/14/1999 0.5 <0.5 <0.5 DCDF:0.5 <br /> Purge 04/11/2000 <0.5 <0.5 <0.5 <br /> Purge 10/09/2000 1 0.6 <0.5 <br /> Purge 04/09/2001 <2.0 <2.0 <2.0 <br /> Purge 04/09/2001 <2.0 <2.0 <2.0 DUP#5 <br /> Purge 10/10/2001 0.9 <0.5 <0.5 CM:0.6 <br /> Purge 05/08/2002 <0.5 <0.5 <0.5 <br /> Purge 07/23/2002 <0.5 <0.5 <0.5 <br /> Purge 10/08/2002 <0.5 <0.5 <0.5 <br /> Purge 01/30/2003 <0.5 <0.5 <0.5 <br /> Purge 04/30/2003 <0.5 <0.5 <0.5 <br /> Purge 07/22/2003 <0.5 <0.5 <0.5 <br /> Purge 10/29/2003 <0.5 <0.5 <0.5 <br /> Purge 01/22/2004 <0.5 <0.5 <0.5 <br /> Purge 04/26/2004 <0.5 <0.5 <0.5 <br /> Purge 07/23/2004 <0.5 <0.5 <0.5 <br /> Purge 10/13/2004 <0.5 <0.5 <0.5 <br /> Purge - 01/26/2005 <0.5 <0.5 <0.5 <br /> PDB 207.5 04/27/2005 0.9 <0.5 0.71 <br /> PDB 212.5 04/27/2005 0.68 <0.5 0.55 <br /> PDB 217.5 04/27/2005 0.73 <0.5 0.63 <br /> PDB 222.5 04/27/2005 0.61 <0.5 0.55 <br /> PDB 222.5 04/27/2005 0.63 <0.5 0.58 DUP <br /> PDB 207.5 08/24/2005 3.1 1 2.8 <br /> PDB 207.5 10/27/2005 6.3 1.9 3.2 <br /> PDB 217.5 01/26/2006 1.1 <0.5 0.72 <br /> PDB 207.5 04/19/2006 1.6 1.2 0.59 <br /> PDB 207.5 07/19/2006 11 3.2 2.2 <br /> PDB 207.5 Q 10/17/2006 16 5.1 8.3 <br /> PDB 217.5 Q 02/26/2007 13 3.7 9 <br /> PDB 217.5 Q 04/26/2007 18 4.7 9.7 <br /> PDB 217.5 Q 07/05/2007 24 6.6 19 trans-1,2-DCE:0.55 <br /> PDB 217.5 Q 10/11/2007 27 7.3 21 trans-1,2-DCE:0.54 <br /> PDB 217.5 Q 02/26/2008 7.1 2.6 9.3 <br /> PDB 217.5 Q 04/22/2008 12 3.1 10 <br /> PDB 217.5 Q 07/18/2008 20 5.1 21 <br /> PDB 217.5 Q 10/17/2008 19 5.6 17 <br /> PDB 217.5 Q 01/30/2009 14 3.5 11 <br /> PDB 217.5 Q 04/28/2009 13 3.5 14 <br /> - 04/28/2009 13 3.4 16 DUP <br /> PDB 217.5 Q 07/28/2009 13 3.7 12 <br /> PDB 217.5 Q 10/26/2009 10 3.0 7.2 <br /> PDB 217.5 Q 01/18/2010 8 2.4 6.8 <br /> PDB 217.5 Q 04/19/2010 1.9 0.7 1.2 <br /> Low flow purge 217.5 Q 08/05/2010 1.2 <0.50 1.5 <br /> PDB 217.5 Q 10/15/2010 1.3 <0.50 1.0 <br /> M-21D Purge - 03/01/1992 1.8 0.8 <0.5 <br /> Purge 06/01/1992 2.6 1.6 <0.5 <br /> Purge 06/01/1992 2.7 1 <0.5 DUP <br /> Purge 10/01/1992 2 0.9 <0.5 <br /> Purge 01/01/1993 <0.5 <0.5 <0.5 <br /> Purge 04/01/1993 <0.5 2.7 <0.5 <br /> Purge 04/01/1993 <0.5 2.9 <0.5 DUP <br /> Purge 08/01/1993 1.7 0.9 <0.5 CF:2.7 <br /> Page 57 of 93 <br />