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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 03/01/1990 5.9 12 <0.5 1,1,2-TCA:13,BDCMA:12,CHBr3:17;CF:18 <br /> Purge 07/01/1990 5.9 11 <0.5 1,1,2-TCA:3.2,BDCMA:2.1,CHBr3:11;CF:4.9 <br /> Purge 09/01/1990 8.4 20.5 <0.5 CF:3.4 <br /> Purge 12/01/1990 2.4 10.7 <0.5 <br /> Purge 04/01/1991 7.6 11 <0.5 <br /> Purge 07/01/1991 7.9 6.9 <0.5 <br /> Purge 10/01/1991 16 16 <0.5 Tol:0.6 <br /> Purge 03/01/1992 20 15 <0.5 CF:0.6 <br /> Purge 06/01/1992 16 17 <0.5 CF:0.5 <br /> Purge 10/01/1992 6.8 9.6 <0.5 CF:0.5 <br /> Purge 01/01/1993 39 26 <0.5 <br /> Purge 04/01/1993 34 22 <0.5 CF:21 <br /> Purge 08/01/1993 21 13 <0.5 CF:6 <br /> Purge 01/01/1994 18 13 <0.5 CF:1.8 <br /> Purge 04/01/1996 43 36 <0.5 1,1-DCE:0.6 <br /> Purge 10/01/1996 28 17 <0.5 <br /> Purge 10/01/1996 <0.5 <0.5 DUP,1,1,2-TCA:14,MC:24 <br /> Purge 04/01/1997 32 18 <0.5 <br /> Purge 11/01/1997 10 7 <0.5 <br /> Purge 04/28/1998 28 16 <0.5 <br /> Purge 10/08/1998 19 11 <0.5 <br /> Purge 04/08/1999 38 20 <0.5 CF:0.7 <br /> Purge 10/08/1999 18 12 <0.5 <br /> Purge 10/08/1999 17 11 <0.5 DUP 3 <br /> Purge 04/12/2000 36 18 <0.5 CF:0.5 <br /> Purge 10/10/2000 21 12 <0.5 CF:0.5 <br /> Purge 04/11/2001 5.3 3.4 <2.0 Tol:3.6 <br /> Purge 10/11/2001 3.6 2.3 <0.5 <br /> Purge 10/11/2001 3.7 2.4 <0.5 DUP <br /> Purge 05/07/2002 32 15 <0.5 <br /> Purge 05/05/2003 35 17 <0.5 <br /> Purge - 04/21/2004 27 15 <0.5 <br /> PDB 93.5 04/20/2005 13 7.9 <0.5 <br /> PDB 98.5 04/20/2005 13 7.4 <0.5 <br /> PDB 103.5 04/20/2005 13 7.6 <0.5 <br /> PDB 108.5 04/20/2005 13 7.6 <0.5 <br /> Purge - 05/09/2005 14 9.1 <0.5 <br /> PDB 93.5 05/03/2006 16 13 <0.5 <br /> PDB 93.5 04/25/2007 12 35 <0.5 <br /> PDB 93.5 A 04/24/2008 9.1 30 <0.5 <br /> - 04/24/2008 9.4 29 <0.5 DUP <br /> PDB 93.5 A 04/10/2009 9.1 12 <0.5 <br /> PDB 93.5 A 04/19/2010 13 15 <0.50 <br /> - 04/19/2010 13 14 <0.50 DUP <br /> M-18B Purge 11/01/1989 <0.5 0.8 <0.5 <br /> Purge 03/01/1990 <5 <5 <5 CF:84 <br /> Purge 07/01/1990 <0.5 0.2 <0.5 BDCMA:1.6;CF:31 <br /> Purge 09/01/1990 <0.5 8 <0.5 CF:3.4 <br /> Purge 12/01/1990 <0.5 10.8 <0.5 CF:4.1 <br /> Purge 04/01/1991 <0.5 7.1 <0.5 CF:2.9 <br /> Purge 07/01/1991 <0.5 14 <0.5 CF:0.9 <br /> Purge 10/01/1991 <0.5 5 <0.5 Tol:5.6;CF:0.5 <br /> Purge 03/01/1992 <0.5 <0.5 <0.5 1,1,1-TCA:16;CF:3.5 <br /> Purge 06/01/1992 <0.5 6.2 <0.5 1,1,1-TCA:1.1;CF:0.5 <br /> Purge 10/01/1992 <0.5 20 <0.5 CF:0.5 <br /> Purge 01/01/1993 13 <0.5 <0.5 CF:1 <br /> Purge 01/01/1993 13 <0.5 <0.5 DUP;CF:1 <br /> Purge 04/01/1993 <0.5 22 <0.5 CF:7.8 <br /> Purge 04/01/1993 <0.5 22 <0.5 DUP;CF:7.8 <br /> Purge 08/01/1993 <0.5 9.9 <0.5 CF:2.1 <br /> Purge 08/01/1993 <0.5 9.9 <0.5 DUP;CF:2.1 <br /> Purge 01/01/1994 <0.5 8.4 <0.5 CF:2.4 <br /> Purge 04/01/1996 <0.5 8 <0.5 <br /> Purge 10/01/1996 24 14 <0.5 DUP <br /> Purge 04/01/1997 <0.5 5.5 <0.5 <br /> Purge 04/28/1998 <0.5 6.7 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 04/17/2000 <0.5 <0.5 <0.5 <br /> Page 26 of 93 <br />