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Table 6: <br /> Historic Concentrations in Wells E-2 and M-813 <br /> Monitoring Well Installation Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, CA 95366 <br /> USEPA Method 8010,8021,8260 or 524 in micrograms per liter(ppb) <br /> Current <br /> Well Name/ Sampling Method Average PDB Sampling <br /> Location purge/PDB) Depth (ft bgs) Frequency Sample Date TCE cis-1.2-DCE Vc Comments/Other Detected VOC's <br /> E-2 Purge - - 10/04/1999 45 2 <0.5 <br /> Purge - - 10/28/1999 130 4.7 <0.5 <br /> Purge - - 11/12/1999 140 6.6 <0.5 <br /> Purge - - 12/09/1999 140 6.5 <0.5 <br /> Purge - - 01/17/2000 150 8.3 0.7 <br /> Purge - - 02/04/2000 140 8.3 1.5 CF: 0.6 <br /> Purge - - 03/10/2000 82 4.1 <0.5 <br /> Purge - - 04/07/2000 75 8.4 2 <br /> Purge - - 05/12/2000 88 8 1.7 <br /> Purge - - 06/08/2000 120 9.6 4.1 CF: 0.8 <br /> Purge - - 07/17/2000 100 9.7 2.4 CF: 0.5 <br /> Purge - - 08/04/2000 88 11 2.8 <br /> Purge - - 09/07/2000 58 6.6 1.9 <br /> Purge - - 10/09/2000 120 16 6.4 <br /> Purge - - 10/25/2000 100 14 5.8 <br /> Purge - - 11/06/2000 87 14 3.8 <br /> Purge - - 11/29/2000 50 5.8 2.5 <br /> Purge - - 12/04/2000 54 4 1.9 <br /> Purge - - 03/05/2001 23 6.2 <0.5 <br /> Purge - - 04/02/2001 51 4.3 <2.0 <br /> Purge - - 07/09/2001 86 12 3 <br /> Purge - - 08/13/2001 72 12 2.5 <br /> Purge - - 09/10/2001 62 13 3.6 <br /> Purge - - 10/03/2001 59 8.3 3.5 <br /> Purge - - 11/05/2001 52 12 3.4 <br /> Purge - - 12/03/2001 33 3.9 <0.5 <br /> Purge - - 01/07/2002 27 3.3 0.7 <br /> Purge - - 02/04/2002 55 13 2.1 <br /> Purge - - 03/04/2002 54 14 3.1 <br /> Purge - - 04/01/2002 52 14 1.3 <br /> Purge - - 05/06/2002 48 10 1.4 <br /> Purge - - 06/06/2002 47 12 2.4 <br /> Purge - - 07/08/2002 50 14 1.5 <br /> Purge - - 08/05/2002 45 8.3 <0.5 <br /> Pure 09/05/2002 26 3 <0.5 <br /> Page 1 of 5 <br />