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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 08/01/1993 1.6 0.9 <0.5 DUP;CF:1.8 <br /> Purge 01/01/1994 1.2 0.8 <0.5 <br /> Purge 04/01/1996 <0.5 <0.5 <0.5 <br /> Purge 10/01/1996 0.6 <0.5 <0.5 <br /> Purge 04/01/1997 <0.5 <0.5 <0.5 <br /> Purge 11/01/1997 <0.5 <0.5 <0.5 <br /> Purge 11/01/1997 0.5 1 <0.5 DUP <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 DUP <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 DUP <br /> Purge 10/15/1999 1.2 0.7 <0.5 <br /> Purge 10/15/1999 1.2 0.7 <0.5 <br /> Purge 04/11/2000 <0.5 <0.5 <0.5 <br /> Purge 10/10/2000 <0.5 <0.5 <0.5 <br /> Purge 04/09/2001 <2.0 <2.0 <2.0 <br /> Purge 10/09/2001 0.9 <0.5 <0.5 <br /> Purge 05/06/2002 <0.5 <0.5 <0.5 PCE:0.8 <br /> Purge 05/06/2002 <0.5 <0.5 <0.5 PCE:0.5,CM:0.9,DUP <br /> Purge 10/09/2002 <0.5 <0.5 <0.5 <br /> Purge 05/02/2003 0.7 <0.5 <0.5 <br /> Purge 10/29/2003 0.9 <0.5 <0.5 <br /> Purge 04/15/2004 0.9 <0.5 <0.5 <br /> Purge - 10/14/2004 0.9 <0.5 <0.5 <br /> PDB 217.5 04/22/2005 0.79 <0.5 <0.5 <br /> PDB 225.5 10/27/2005 0.95 <0.5 <0.5 <br /> PDB 227.5 04/12/2006 1 <0.5 <0.5 <br /> PDB 227.5 10/17/2006 0.67 <0.5 <0.5 <br /> PDB 227.5 SA 10/17/2006 0.68 <0.5 <0.5 DUP <br /> PDB 227.5 SA(h) 03/29/2007 0.77 <0.5 <0.5 NR <br /> PDB 227.5 SA(h) 04/26/2007 0.79 <0.5 <0.5 <br /> - 04/26/2007 0.78 <0.5 <0.5 DUP <br /> PDB 227.5 SA(h) 07/03/2007 0.75 <0.5 <0.5 <br /> PDB 227.5 SA(h) 10/11/2007 0.91 <0.5 <0.5 <br /> PDB 227.5 SA(a) 02/26/2008 0.68 <0.5 <0.5 <br /> PDB 227.5 SA(a) 04/22/2008 0.71 <0.5 <0.5 <br /> PDB 227.5 SA(a) 07/21/2008 0.69 <0.5 <0.5 <br /> PDB 227.5 SA(a) 10/17/2008 0.86 <0.5 <0.5 <br /> PDB 227.5 SA(a) 01/30/2009 0.95 <0.5 <0.5 <br /> PDB 227.5 SA(a) 04/28/2009 0.65 <0.5 <0.5 <br /> PDB 227.5 SA(a) 07/28/2009 0.78 <0.5 <0.5 <br /> PDB 227.5 SA(a) 10/26/2009 0.85 <0.5 <0.5 <br /> - 10/26/2009 0.86 <0.5 <0.5 DUP <br /> PDB 227.5 SA(a) 01/18/2010 0.69 <0.50 <0.50 <br /> PDB 227.5 SA(a) 04/19/2010 0.83 <0.50 <0.50 <br /> PDB 227.5 Q 07/08/2010 0.61 <0.50 <0.50 <br /> PDB 227.5 Q 10/21/10 <0.50 <0.50 <0.50 <br /> M-23D 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 0.6 <0.5 <br /> Purge 04/01/1996 <0.5 <0.5 <0.5 <br /> Purge 10/01/1996 62 19 <0.5 <br /> Purge 04/01/1997 <0.5 <0.5 <0.5 <br /> Purge 11/01/1997 <0.5 <0.5 <0.5 <br /> Purge 04/30/1998 <0.5 <0.5 <0.5 <br /> Purge 10/05/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 10/13/1999 <0.5 <0.5 <0.5 <br /> Purge 10/13/1999 <0.5 <0.5 <0.5 DUP 2 <br /> Purge 04/11/2000 <0.5 <0.5 <0.5 <br /> Purge 10/10/2000 <0.5 <0.5 <0.5 <br /> Purge 04/09/2001 <2.0 <2.0 <2.0 <br /> Purge 10/09/2001 <0.5 <0.5 <0.5 <br /> Purge 10/09/2001 <0.5 <0.5 <0.5 DUP <br /> Purge 05/08/2002 <0.5 <0.5 <0.5 <br /> Purge 05/07/2003 NS NS NS <br /> Purge 04/16/2004 <0.5 <0.5 <0.5 <br /> Page 58 of 93 <br />