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Table 3.1: Volatile Organic Compounds, Analytical Results, Upper Aquifer Wells <br /> Third Quarter 2011 Site Status Report <br /> Former Nestle USA, Inc. Facility, Ripon, CA <br /> Sample Sample Average PDB MRP Actual Sample cis-1,2- trans-1,2- Trichloro- Vinyl <br /> Location Method Depth (ft, bgs) Sampling Sampling Date Chloroform Dichloroethene Dichloroethene ethene Chloride Comments/Others <br /> Frequency Frequency <br /> USEPA Methods 8260B and 524, micrograms per liter (pg/L) <br /> M-47A PDB 52.5 Quarterly Quarterly 01/07/11 30 <0.50 <0.50 2.4 <0.50 1,1-DCE: 0.97; 1,1-DCA: 4.4 <br /> M-47A PDB 52.5 Quarterly Quarterly 04/08/11 62 <0.50 <0.50 1.7 <0.50 1,1-DCE: 0.75; 1,1-DCA: 3.4 <br /> M-47A PDB 52.5 Quarterly Quarterly 07/12/11 97 <0.50 <0.50 1.5 <0.50 1,1-DCA: 2 <br /> M-48A PDB 52.5 Quarterly Quarterly 01/07/11 <1.0 <0.50 <0.50 1.4 <0.50 <br /> M-48A PDB 52.5 Quarterly Quarterly 04/08/11 2.1 <0.50 <0.50 1.0 <0.50 <br /> M-48A PDB 52.5 Quarterly Quarterly 07/12/11 3.2 <0.50 <0.50 0.8 <0.50 <br /> M-49A PDB 52.5 Quarterly Quarterly 01/07/11 <1.0 0.77 <0.50 57 <0.50 <br /> M-49A PDB 52.5 Quarterly Quarterly 04/08/11 <1.0 <0.50 <0.50 28 <0.50 <br /> M-49A PDB 52.5 Quarterly Quarterly 07/08/11 <1.0 1.9 <0.50 130 <0.50 <br /> M-50A PDB 62.5 Not Listed Quarterly 01/07/11 <1.0 <0.50 <0.50 1.6 <0.50 <br /> M-50A PDB 62.5 Not Listed Quarterly 04/08/11 <1.0 <0.50 <0.50 2.1 <0.50 <br /> M-50A PDB 62.5 Not Listed Quarterly 07/12/11 <1.0 <0.50 <0.50 2.1 <0.50 <br /> M-51 A PDB 55.5 Not Listed Quarterly 01/07/11 9.6 <0.50 <0.50 1.9 <0.50 1,1-DCA: 0.66 <br /> M-51 A PDB 55.5 Not Listed Quarterly 04/08/11 12 <0.50 <0.50 1.7 <0.50 1,1-DCA: 0.71 <br /> M-51A PDB 55.5 Not Listed Quarterly 07/12/11 16 <0.50 <0.50 1.5 <0.50 1,1-DCA: 0.56 <br /> M-52B PDB 34.5 Not Listed Monthly', Quarter) 01/11/11 <1.0 <0.50 <0.50 1.2 <0.50 <br /> M-52B PDB 34.5 Not Listed Monthly', Quarterly 04/12/11 <1.0 <0.50 <0.50 3.7 <0.50 <br /> M-52B PDB 34.5 Not Listed Monthly', Quarter) 07/12/11 <1.0 <0.50 <0.50 1.1 <0.50 <br /> M-53B PDB 39.5 Not Listed Quarterly 01/11/11 <1.0 3.8 <0.50 3.6 <0.50 <br /> M-53B PDB 39.5 Not Listed Quarterly 04/12/11 <1.0 <0.50 <0.50 0.54 <0.50 <br /> M-53B PDB 39.5 7 Not Listed Quarterly 07/12/11 <1.0 <0.50 <0.50 7.4 <0.50 <br /> Notes: <br /> Highlighting = Current quarter <br /> Bold Result = Detection above laboratory reporting limit <br /> ' = Monthly sampling ended in January 2011, quarterly through 4th Quarter 2011 per RWQCB <br /> 2 = Quarterly sampling because well is pumping <br /> Biennial = Sampled in odd-numbered years <br /> Inf/Eff: Influent and Effluent sampling (occurs monthly for operating extraction wells) <br /> 1,1-DCE = 1,1-dichloroethene NS = Not Sampled <br /> 1,1-DCA = 1,1-dichloroethane NR = Sampling Not Required. <br /> PDB = passive diffusion bag - = Data Not available or Unknown. <br /> Page 4 of 4 <br />