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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 11/01/1997 <0.5 <0.5 <0.5 <br /> Purge 05/01/1998 <0.5 1.4 <0.5 <br /> Purge 10/07/1998 <0.5 1.1 <0.5 <br /> Purge 10/07/1998 <0.5 1.5 <0.5 DUP1 <br /> Purge 04/09/1999 <0.5 1.9 <0.5 <br /> Purge 10/07/1999 <0.5 2.4 <0.5 <br /> Purge 04/14/2000 <0.5 2.8 <0.5 <br /> Purge 10/09/2000 <0.5 4.7 <0.5 CCL4:0.5 <br /> Purge 04/11/2001 <2.0 <2.0 <2.0 <br /> Purge 07/12/2001 <0.5 4.8 <0.5 CM:1.5 <br /> Purge 10/11/2001 <0.5 5.3 <0.5 PCE:0.6 <br /> Purge 01/23/2002 0.5 2.8 <0.5 PCE:2.5 <br /> Purge 05/07/2002 <0.5 2.9 <0.5 PCE:1.0 <br /> Purge 07/23/2002 <0.5 4.1 <0.5 PCE:0.5 <br /> Purge 10/09/2002 <0.5 3.6 <0.5 <br /> Purge 02/04/2003 <0.5 4 <0.5 PCE:0.6 <br /> Purge 05/06/2003 <0.5 4.1 <0.5 <br /> Purge 07/22/2003 <0.5 3.5 <0.5 PCE:0.6 <br /> Purge 10/28/2003 <0.5 3.9 <0.5 <br /> Purge 01/23/2004 <0.5 3.4 <0.5 <br /> Purge 04/20/2004 <0.5 3.6 <0.5 <br /> Purge 07/20/2004 <0.5 5.1 <0.5 <br /> Purge 10/13/2004 <0.5 5.7 <0.5 <br /> Purge - 01/25/2005 <0.5 6.2 <0.5 <br /> PDB 94.5 04/26/2005 <0.5 7.3 <0.5 <br /> PDB 94.5 04/26/2005 <0.5 7 <0.5 DUP <br /> PDB 99.5 04/26/2005 <0.5 6.8 <0.5 <br /> PDB 104.5 04/26/2005 <0.5 7.2 <0.5 <br /> PDB 109.5 04/26/2005 0.73 8.4 <0.5 <br /> PDB 109.5 08/24/2005 0.87 29 <0.5 <br /> PDB 109.5 10/28/2005 1.5 79 <0.5 <br /> PDB 109.5 01/26/2006 1.4 82 <0.5 <br /> PDB 109.5 04/19/2006 1.4 56 <0.5 CCL4:1.8;Actual depth is 109.5,not 109 ft bgs. <br /> PDB 109.5 07/19/2006 2.8 140 <1 Actual depth is 109.5,not 109 ft bgs. <br /> PDB 109.5 Q 10/17/2006 3.1 150 <2 <br /> PDB 109.5 Q 02/26/2007 3.2 140 <2 <br /> PDB 109.5 Q 04/25/2007 4 160 <2 <br /> PDB 109.5 Q 07/03/2007 3.5 150 <1 <br /> - 07/03/2007 3.4 160 <1 DUP <br /> PDB 109.5 Q 10/07/2007 3.8 110 <1 <br /> PDB 109.5 Q 02/27/2008 2.5 71 <0.5 <br /> PDB 109.5 Q 04/24/2008 4.4 88 <1 <br /> PDB 109.5 Q 07/22/2008 4 73 <0.5 <br /> PDB 109.5 Q 10/16/2008 3.7 95 <0.5 CF:0.88 <br /> PDB 109.5 Q 01/26/2009 4.6 86 <0.5 CF:1 <br /> - 01/26/2009 4 86 <0.5 CF:1;DUP <br /> PDB 109.5 Q 04/10/2009 4.6 85 <1 <br /> PDB 109.5 Q 07/28/2009 6.6 250 <1 <br /> PDB 109.5 Q 10/26/2009 2.6 2(i) <1 <br /> PDB 109.5 Q 01/14/2010 6.6 300 <0.50 <br /> Low-flow purge 109.5 Q 04/26/2010 6 300 <0.50 <br /> Low-flow purge 109.5 Q 08/03/2010 5.8 310 <1.0 <br /> - 08/03/2010 5.9 320 <0.50 DUP <br /> PDB 109.5 Q 10/21/2010 5.9 340 <0.50 <br /> M-10B Purge - 06/01/1988 NA <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 03/01/1990 <0.5 <0.5 <0.5 DUP <br /> Purge 07/01/1990 <0.5 <0.5 <0.5 <br /> Purge 09/01/1990 <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 10/01/1991 <0.5 <0.5 <0.5 DUP <br /> Purge 03/01/1992 <0.5 <0.5 <0.5 <br /> Purge 06/01/1992 <0.5 <0.5 <0.5 <br /> Page 18 of 93 <br />