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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 10/01/1991 5.2 1 <0.5 DUP,BDCMA:8,DBCMA:0.6;CF:2.3 <br /> Purge 03/01/1992 <0.5 <0.5 <0.5 Benzene:0.8 <br /> Purge 06/01/1992 2.2 0.7 <0.5 <br /> Purge 10/01/1992 1.8 0.7 <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 2.1 <br /> Purge 01/01/1994 <0.5 <0.5 1.5 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 0.8 <0.5 <0.5 <br /> Purge 04/30/1998 2 0.9 <0.5 <br /> Purge 04/08/1999 <0.5 <0.5 <0.5 <br /> Purge 04/13/2000 <0.5 <0.5 <0.5 <br /> Purge 04/12/2001 <2.0 <2.0 <2.0 <br /> Purge 05/08/2002 <0.5 <0.5 <0.5 <br /> Purge 05/05/2003 0.5 <0.5 <0.5 <br /> Purge 05/05/2003 0.6 <0.5 <0.5 DUP <br /> Purge 04/20/2004 <0.5 <0.5 <0.5 <br /> Purge - 04/20/2004 <0.5 <0.5 <0.5 DUP <br /> PDB 88.5 04/21/2005 2.6 0.69 0.67 <br /> PDB 88.5 04/21/2005 2.6 0.71 0.67 DUP <br /> PDB 93.5 04/21/2005 2.6 0.71 0.7 <br /> PDB 98.5 04/21/2005 0.91 <0.5 <0.5 <br /> PDB 103.5 04/21/2005 0.84 <0.5 <0.5 <br /> PDB 93.5 04/19/2006 1.9 <0.5 <0.5 <br /> PDB 93.5 04/26/2007 1.9 0.54 <0.5 <br /> PDB 93.5 A 04/22/2008 <0.5 <0.5 <0.5 <br /> - 04/22/2008 <0.5 <0.5 <0.5 DUP <br /> PDB 93.5 A 04/10/2009 <0.5 <0.5 <0.5 <br /> PDB 93.5 A 04/19/2010 <0.50 <0.50 <0.50 <br /> Low-flow purge 93.5 A 08/03/2010 <0.50 <0.50 <0.50 <br /> M-17B Purge - 11/01/1989 <0.5 <0.5 <0.5 <br /> Purge 03/01/1990 <5 <5 <5 CF:100 <br /> Purge 03/01/1990 <5 <5 <5 DUP;CF:150 <br /> Purge 07/01/1990 <0.5 <0.5 <0.5 BDCMA:1.3;CF:37 <br /> Purge 09/01/1990 <0.5 <0.5 <0.5 CF:8.4 <br /> Purge 12/01/1990 <0.5 <0.5 <0.5 CF:6.8 <br /> Purge 04/01/1991 <0.5 <0.5 <0.5 <br /> Purge 07/01/1991 <0.5 <0.5 <0.5 Chloroethane:5 <br /> Purge 10/01/1991 <0.5 <0.5 <0.5 CF:1.2 <br /> Purge 03/01/1992 <0.5 <0.5 <0.5 <br /> Purge 06/01/1992 0.6 0.6 <0.5 CF:0.9 <br /> Purge 10/01/1992 <0.5 <0.5 <0.5 CF:0.6 <br /> Purge 01/01/1993 <0.5 <0.5 <0.5 <br /> Purge 04/01/1993 0.6 0.7 <0.5 <br /> Purge 08/01/1993 <0.5 <0.5 <0.5 <br /> Purge 01/01/1994 <0.5 0.5 <0.5 CF:0.9 <br /> Purge 03/01/1995 <0.5 <0.5 <0.5 <br /> Purge 01/04/1996 <0.5 1 <0.5 <br /> Purge 04/01/1996 1.9 1 <0.5 <br /> Purge 04/01/1997 <0.5 <0.5 <0.5 <br /> Purge 04/30/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/18/2000 <0.5 2.7 <0.5 <br /> Purge 04/12/2001 <2.0 <2.0 <2.0 <br /> Purge 05/08/2002 <0.5 0.7 <0.5 <br /> Purge - 10/29/2003 <0.5 0.8 <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 /> PDB 42.5 04/21/2005 <0.5 <0.5 <0.5 <br /> Purge - 05/10/2005 <0.5 <0.5 <0.5 <br /> PDB 42.5 04/26/2007 <0.5 <0.5 <0.5 <br /> PDB 42.5 B 04/10/2009 <0.5 <0.5 <0.5 <br /> Low-flow purge 42.5 B 08/03/2010 <0.50 <0.50 <0.50 <br /> M-18A Purge - 11/01/1989 <0.5 7.9 <0.5 CF:3 <br /> Page 25 of 93 <br />