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Table 4: Volatile Organic Compounds in Municipal Wells and Private Wells <br /> Second Quarter 2012 Site Status Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, CA <br /> Average <br /> Sample Sampling Sample cis-12- trans-12- <br /> Well ID Method PDB Depth Frequency Date Chloroform Dichloroethene Dichloroethene Trichloroethene Vinyl Chloride Mm Comments/Others <br /> (ft, bgs) <br /> 1051 Robert Avenue Grab - Monthly 01/04/12 <0.10 1.4 <0.10 0.49 <0.10 <br /> 1051 Robert Avenue Grab - Monthly 02/07/12 <0.10 0.54 <0.10 0.21 <0.10 <br /> 1051 Robert Avenue Grab - Monthly 03/06/12 <0.10 0.59 <0.10 0.17 <0.10 <br /> 1051 Robert Avenue Grab - Monthly 04/10/12 <0.10 1.6 <0.10 0.51 <0.10 <br /> 1051 Robert Avenue Grab - Monthly 05/08/12 <0.10 1.4 <0.10 0.45 <0.10 <br /> 1051 Robert Avenue Grab - Monthly 06/05/12 <0.10 4.0 <0.10 1.3 <0.10 <br /> Other Wells <br /> RC-1 Grab - Monthly 01/27/12 <0.10 <0.10 <0.10 0.46 <0.10 Cross-contamination confirmed with Trip Blank and <br /> confirmation sample collected on 01/31/12. <br /> RC-1 Grab - Monthly 01/31/12 <0.10 <0.10 <0.10 <0.10 <0.10 <br /> RC-1 Grab - Monthly 02/07/12 <0.10 <0.10 <0.10 <0.10 <0.10 1,1-Dichloroethene: 0.13; <br /> RC-1 Grab - Monthly 03/06/12 <0.10 <0.10 <0.10 <0.10 <0.10 1,1-Dichloroethene: 0.17; <br /> RC-1 Grab - Monthly 04/26/12 <0.10 <0.10 <0.10 <0.10 <0.10 <br /> RC-1 Grab - Monthly 05/08/12 <0.10 <0.10 <0.10 <0.10 <0.10 1,1-Dichloroethene:0.11; <br /> RC-1 Grab - Monthly 06/05/12 0.12 <0.10 <0.10 <0.10 <0.10 <br /> USEPA Method 8260B micrograms per liter (pg/L) <br /> Municipal Wells <br /> MW-5 Grab - Quarterly (a) - - - - - - Well pump not operational during sampling event. <br /> MW-11 Grab - Quarterly (a 04/18/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> MW-11 Grab - Quarterly (a) 01/23/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> MW-11 Grab - Quarterly a 04/18/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> Diamond Pet Food Processors (formerly Neenah Paper Company) Wells <br /> PW-6 Grab - Quarterly (a) 03/08/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> PW-6 Grab - Quarterly a 05/31/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> PW-8 Grab - Quarterly (a) - - - - - - Well not operational at this time. <br /> PW-8 Grab - Quarterly (a) - - - - - - Well not operational at this time. <br /> TH-1 PDB 278.5 Annual 05/31/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> TH-7 PDB 90 Annual 05/31/12 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> TH-8 PDB 142.5 Quarterly 01/24/12 <1.0 8.7 <0.50 3.2 11 <br /> TH-8 PDB 142.5 Quarterly 04/06/12 <1.0 9.8 <0.50 2.8 11 <br /> TH-9 PDB 82.5 Quarterly 01/24/12 <1.0 1.0 <0.50 0.60 1.1 <br /> TH-9 PDB 82.5 Quarterly 04/06/12 <1.0 <0.50 <0.50 <0.50 0.85 <br /> TH-10 PDB 145.5 Quarterly 01/24/12 <5.0 130 2.7 45 140 1,1-Dichloroethene: 2.5; <br /> TH-10 PDB 145.5 Quarterly 04/06/12 <1.0 130 2.6 46 140 1,1-Dichloroethene: 1.6; <br /> TH-10 Duplicate 04/06/12 <1.0 130 2.5 44 140 11,11-Dichloroethene: 1.6; <br /> TH-11 PDB 175 Semi-Annual <br /> Other Wells <br /> RPS-1 Grab - Monthly01/04/12 <1.0 4.7 <0.50 2.5 <0.50 <br /> RPS-1 Grab - Monthly 02/07/12 <1.0 5.3 <0.50 2.1 <0.50 <br /> RPS-1 Grab - Monthly 03/06/12 <1.0 4.0 <0.50 1.6 <0.50 <br /> RPS-1 Grab - Monthly 04/10/12 <1.0 6.2 <0.50 2.4 <0.50 <br /> RPS-1 Grab - Monthly 05/08/12 <1.0 5.2 <0.50 2.1 <0.50 <br /> RPS-1 Grab - Monthly 06/05/12 <1.0 4.1 <0.50 1.7 <0.50 <br /> Page 3 of 4 <br />