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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 /> PDB 103.5 A 04/28/2009 <0.5 <0.5 <0.5 <br /> - 04/28/2009 <0.5 <0.5 <0.5 <br /> PDB 103.5 A 04/19/2010 <0.50 <0.50 <0.50 <br /> M-11B Purge - 06/01/1988 <0.5 <0.5 <0.5 <br /> 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 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 10/01/1991 <0.5 <0.5 <0.5 <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 5.7 2.1 <0.5 CF:0.7 <br /> Purge 04/01/1993 <0.5 <0.5 <0.5 <br /> Purge 08/01/1993 <0.5 <0.5 <0.5 CF:2 <br /> Purge 01/01/1994 <0.5 <0.5 <0.5 CF:1.3 <br /> Purge 05/01/1994 <0.5 <0.5 <0.5 CF:0.8 <br /> Purge 07/01/1994 <0.5 <0.5 <0.5 CF:0.5 <br /> Purge 10/01/1994 <0.5 2.2 <0.5 <br /> Purge 03/01/1995 <0.5 <0.5 <0.5 <br /> Purge 07/01/1995 <0.5 <0.5 <0.5 <br /> Purge 10/01/1995 <0.5 <0.5 <0.5 <br /> Purge 01/01/1996 <0.5 <0.5 <0.5 <br /> Purge 04/01/1996 <0.5 <0.5 <0.5 <br /> Purge 07/01/1996 <0.5 <0.5 <0.5 <br /> Purge 07/01/1996 <0.5 <0.5 <0.5 <br /> Purge 10/01/1996 <0.5 <0.5 <0.5 <br /> Purge 01/01/1997 <0.5 <0.5 <0.5 <br /> Purge 04/01/1997 <0.5 <0.5 <0.5 <br /> Purge 07/01/1997 <0.5 <0.5 <0.5 <br /> Purge 11/01/1997 <0.5 <0.5 <0.5 Chloroethane:1,Freon11:1.2 <br /> Purge 02/01/1998 <0.5 <0.5 <0.5 <br /> Purge 02/04/1998 <0.5 <0.5 <0.5 <br /> Purge 04/29/1998 <0.5 <0.5 <0.5 <br /> Purge 07/16/1998 <0.5 <0.5 <0.5 <br /> Purge 07/16/1998 <0.5 <0.5 <0.5 DUP1 <br /> Purge 10/06/1998 <0.5 <0.5 <0.5 <br /> Purge 01/05/1999 <0.5 <0.5 <0.5 <br /> Purge 01/05/1999 <0.5 <0.5 <0.5 DUP1 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 07/19/1999 <0.5 <0.5 <0.5 <br /> Purge 10/11/1999 <0.5 <0.5 <0.5 <br /> Purge 01/20/2000 <0.5 <0.5 <0.5 <br /> Purge 04/18/2000 <0.5 <0.5 <0.5 <br /> Purge 07/13/2000 <0.5 <0.5 <0.5 <br /> Purge 10/11/2000 <0.5 <0.5 <0.5 <br /> Purge 01/10/2001 <1.0 <1.0 <1.0 <br /> Purge 04/11/2001 <2.0 <2.0 <2.0 Tol:3.6 <br /> Purge 07/11/2001 <0.5 <0.5 <0.5 <br /> Purge 10/10/2001 <0.5 <0.5 <0.5 <br /> Purge 01/22/2002 <0.5 <0.5 <0.5 <br /> Purge 01/22/2002 <0.5 <0.5 <0.5 DUP <br /> Purge 05/08/2002 <0.5 <0.5 <0.5 <br /> Purge 10/29/2003 <0.5 <0.5 <0.5 <br /> Purge - 10/29/2003 <0.5 <0.5 <0.5 DUP <br /> PDB 29.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 34.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 39.5 B 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 39.5 B 05/22/2007 <0.5 <0.5 <0.5 <br /> NS - B 11/06/2008 <0.5 <0.5 <0.5 <br /> PDB 39.5 B 04/28/2009 <0.5 <0.5 <0.5 <br /> - 04/28/2009 <0.5 <0.5 <0.5 <br /> M-12A Purge 06/01/1988 33 230 <5 1,1,1-TCA:84 <br /> Purge 03/01/1989 9.3 64 <5 <br /> Purge 07/01/1990 <0.5 54 <0.5 <br /> Purge 09/01/1990 6.4 49.4 <0.5 <br /> Purge 12/01/1990 6.4 1.7 <0.5 <br /> Page 20 of 93 <br />