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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 01/01/1994 <0.5 <0.5 <0.5 <br /> Purge 07/01/1994 <0.5 <0.5 <0.5 <br /> Purge 03/01/1995 <0.5 <0.5 <0.5 <br /> Purge 10/01/1995 <0.5 <0.5 <0.5 <br /> Purge 04/01/1996 <0.5 <0.5 <0.5 <br /> Purge 10/01/1996 <0.5 <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 Chloroethane:0.9 <br /> Purge 04/28/1998 <0.5 <0.5 <0.5 <br /> Purge 10/06/1998 <0.5 <0.5 <0.5 <br /> Purge 04/06/1999 <0.5 <0.5 <0.5 <br /> Purge 10/07/1999 <0.5 <0.5 <0.5 <br /> Purge 04/18/2000 <0.5 <0.5 <0.5 <br /> Purge 10/11/2000 <0.5 <0.5 <0.5 <br /> Purge 04/12/2001 <2.0 <2.0 <2.0 <br /> Purge 10/10/2001 <0.5 <0.5 <0.5 CM:1.0 <br /> Purge 05/07/2002 <0.5 <0.5 <0.5 <br /> Purge - 05/02/2003 <0.5 <0.5 <0.5 <br /> PDB 33.5 04/27/2005 <0.5 <0.5 <0.5 <br /> PDB 38.5 04/27/2005 <0.5 <0.5 <0.5 <br /> PDB 38.5 A 04/25/2006 <0.5 <0.5 <0.5 <br /> PDB 38.5 A 05/10/2007 <0.5 <0.5 <0.5 <br /> PDB 38.5 A 04/23/2008 <0.5 <0.5 <0.5 <br /> PDB 38.5 A 04/23/2009 <0.5 <0.5 <0.5 <br /> - 04/23/2009 <0.5 <0.5 <0.5 DUP <br /> PDB 38.5 A 04/12/2010 <0.50 <0.50 <0.50 <br /> M-6A Purge - 10/01/1987 8 210 <5 <br /> Purge 06/01/1988 NA 60 <5 <br /> Purge 03/01/1989 6.6 170 <5 <br /> Purge 10/01/1991 64 15 <0.5 1,1-DCE:0.6,t-1,2-DCE:0.6,Tol:1.6;CF:1.6 <br /> Purge 03/01/1992 70 195 <0.5 t-1,2-DCE:0.7;CF:1.3 <br /> Purge 06/01/1992 70 278 <0.5 1,1-DCE:0.9,t-1,2-DCE:0.6 <br /> Purge 10/01/1992 62 388 1.4 <br /> Purge 01/01/1993 33 224 <0.5 CF:2.2 <br /> Purge 04/01/1993 50 280 <0.5 1,1-DCE:7 <br /> Purge 08/01/1993 15 120 <0.5 <br /> Purge 01/01/1994 41 205 <0.5 1,1-DCE:0.6 <br /> Purge 05/01/1994 45 220 6.7 1,1-DCE:0.9 <br /> Purge 03/01/1995 28 150 <0.5 CF:0.8 <br /> Purge 04/01/1996 48 240 <0.5 CF:0.8 <br /> Purge 04/01/1996 52 14 <0.5 DUP;CF:0.9 <br /> Purge 04/01/1997 21 65 <0.5 <br /> Purge 07/01/1997 2 91 <0.5 CF:1.6 <br /> Purge 07/01/1997 14 220 <0.5 DUP <br /> Purge 05/01/1998 10 49 <0.5 <br /> Purge 04/08/1999 6.8 33 <0.5 <br /> Purge 04/08/1999 6.4 31 <0.5 DUP <br /> Purge 04/10/2000 41 75 0.8 1,1-DCE:0.6;CF:1.2 <br /> Purge 04/10/2000 42 75 0.9 DUP 5;1,1-DCE:0.6;CF:1.4 <br /> Purge 07/10/2000 57 40 <0.5 CCL4:0.8;CF:1.7 <br /> Purge 04/11/2001 36 10 <2.0 Tol:3.5 <br /> Purge 05/09/2002 23 29 <0.5 PCE:0.5 <br /> Purge 05/05/2003 51 110 0.8 <br /> Purge - 04/23/2004 42 96 1.6 <br /> PDB 92.5 04/26/2005 19 57 0.83 <br /> PDB 97.5 04/26/2005 19 56 0.82 <br /> PDB 102.5 04/26/2005 19 58 0.77 <br /> PDB 107.5 04/26/2005 20 55 0.81 <br /> PDB 102.5 A 04/18/2006 11 29 <0.5 <br /> PDB 107.5 A 05/10/2007 17 62 <0.5 <br /> PDB 107.5 A 04/28/2008 6.8 57 <0.5 <br /> PDB 107.5 A 10/28/2008 12 59 0.75 <br /> PDB 107.5 A 04/30/2009 9.9 61 <0.5 <br /> Low-flow purge 107.5 A 04/26/2010 16 72 0.9 <br /> Low-flow purge 107.5 SA 08/02/2010 13 65 0.62 <br /> PDB 107.5 SA 10/21/2010 19 86 1.4 <br /> M-66 Purge - 10/01/1987 <0.5 27 <0.5 <br /> Purge 06/01/1988 NA 72 <5 <br /> Purge 03/01/1989 <5 300 <5 <br /> Page 13 of 93 <br />