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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 04/01/1991 <5 400 <5 <br /> Purge 07/01/1991 <5 210 <5 <br /> Purge 03/01/1992 4.6 1900 <5 CF:2.2 <br /> Purge 01/01/1993 2.7 3470 <5 CF:1.8 <br /> Purge 01/01/1994 4 1210 <0.5 CF:1.6 <br /> Purge 05/01/1994 2.8 1400 <0.5 CF:1.2 <br /> Purge 03/01/1995 3.9 1920 <0.5 CF:1.7 <br /> Purge 04/01/1996 6.5 2600 <0.5 CF:1.7 <br /> Purge 04/01/1997 4 1100 <0.5 CF:0.8 <br /> Purge 07/01/1997 2.7 600 <0.5 MC:0.7;CF:0.7 <br /> Purge 07/01/1997 2.6 <50 <0.5 DUP;CF:0.7 <br /> Purge 05/01/1998 5.6 1000 <0.5 CF:1.1 <br /> Purge 04/07/1999 6.9 540 <0.5 CF:1.4 <br /> Purge 04/18/2000 6.1 590 <0.5 CF:1.2 <br /> Purge 04/18/2000 6.3 620 <0.5 DUP 2;CF:1.3 <br /> Purge 04/11/2001 <2.0 170 <2.0 <br /> Purge 05/09/2002 4.5 420 <0.5 CF:0.7 <br /> Purge 05/09/2002 4.3 410 <0.5 DUP;CF:0.6 <br /> Purge 04/29/2003 5.1 570 <0.5 CF:0.7 <br /> Purge - 04/16/2004 2.6 400 <0.5 CF:0.8 <br /> PDB 30.5 04/26/2005 <2.5 220 <2.5 <br /> PDB 35.5 04/26/2005 <2.5 220 <2.5 <br /> PDB 40.5 04/26/2005 <2.5 230 <2.5 <br /> Purge - 05/17/2005 <2.5 210 <2.5 <br /> PDB 40.5 A 04/18/2006 <2.5 150 <2.5 <br /> PDB 40.5 A 05/10/2007 <2 230 <2 <br /> - 05/10/2007 <2 240 <2 DUP <br /> PDB 40.5 A 04/28/2008 <1 120 <1 <br /> PDB 40.5 A 10/28/2008 <0.5 98 <0.5 <br /> PDB 40.5 A 04/30/2009 <1 96 <1 <br /> PDB 40.5 A 04/19/2010 0.55 67 <0.50 <br /> Low-flow purge 40.5 SA 08/02/2010 <2.5 98 <2.5 <br /> PDB 40.5 SA 10/21/2010 0.56 92 <0.50 <br /> M-7A Purge - 10/01/1987 <0.5 2.3 <0.5 MC:0.6 <br /> Purge 03/01/1989 <0.5 <0.5 <0.5 <br /> Purge 03/01/1990 <0.5 <0.5 <0.5 <br /> Purge 07/01/1990 <0.5 <0.5 <0.5 <br /> Purge 09/01/1990 <0.5 0.7 <0.5 <br /> Purge 12/01/1990 <0.5 0.8 <0.5 <br /> Purge 04/01/1991 1.9 1.7 <0.5 <br /> Purge 07/01/1991 6.5 6.7 <0.5 <br /> Purge 10/01/1991 17 14 <0.5 <br /> Purge 03/01/1992 14 14 <0.5 MC:0.6;CF:0.5 <br /> Purge 06/01/1992 34 38 <0.5 <br /> Purge 10/01/1992 43 67 <0.5 <br /> Purge 01/01/1993 41 60 <0.5 <br /> Purge 04/01/1993 47 51 <0.5 <br /> Purge 01/01/1994 11 17 <0.5 <br /> Purge 03/01/1995 4.8 7.8 <0.5 <br /> Purge 04/01/1996 9.7 14 <0.5 <br /> Purge 04/01/1997 <0.5 0.9 <0.5 <br /> Purge 04/30/1998 2.7 4.1 <0.5 <br /> Purge 11/09/1998 <0.5 <0.5 <0.5 <br /> Purge 04/07/1999 2.8 3.3 <0.5 <br /> Purge 04/12/2000 2 2 <0.5 <br /> Purge 04/10/2001 <2.0 <2.0 <2.0 <br /> Purge 05/08/2002 <0.5 1 <0.5 <br /> Purge 05/01/2003 0.6 0.7 <0.5 <br /> Purge - 04/13/2004 0.5 0.5 <0.5 <br /> PDB 96.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 101.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 106.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 111.5 04/20/2005 <0.5 <0.5 <0.5 <br /> PDB 111.5 A 04/12/2006 <0.5 <0.5 <0.5 <br /> PDB 111.5 A 05/22/2007 <0.5 <0.5 <0.5 <br /> PDB 111.5 A 04/22/2008 <0.5 <0.5 <0.5 <br /> PDB 111.5 A 04/30/2009 <0.5 <0.5 <0.5 <br /> PDB 111.5 A 04/19/2010 <0.50 <0.50 <0.50 <br /> M-76 Purge - 10/01/1987 <0.5 <0.5 <0.5 <br /> Page 14 of 93 <br />