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Table 3.1: Volatile Organic Compounds,Analytical Results, Upper Aquifer Wells <br /> 2010 Annual Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, CA <br /> SampleLocation Sample Method Average PDB Sampling Sample Chloroform cis-1,2- trans-1,2- Trichloroethene Vinyl Chloride Comments/Others <br /> Depth(ft, bgs) Frequency Date Dichloroethene Dichloroethene <br /> USEPA Method 8021 and 524,micrograms per liter(Ng/L) <br /> M-48A PDB 52.5 W 1/18/10 10 < 0.5 <0.50 2.8 <0.50 <br /> M-48A PDB 52.5 Q. 4/19/10 29 <0.50 <0.50 2.1 <0.50 <br /> M-48A PDB 52.5 Q 7/6/2010 15 <0.50 <0.50 1.8 <0.50 <br /> M-48A PDB 52.5 Q 10/21/2010 19 <0.50 <0.50 2.5 <0.50 <br /> M-49A PDB 52.5 Q. 1/18/10 <1.0 1.5 <0.50 78 <0.50 <br /> M-49A PDB 52.5 Q* 4/19/10 <1.0 1.2 <0.50 58 <0.50 <br /> M-49A Low-flow purge 52.5 Q 8/2/10 <1.0 1.5 <1.0 130 <0.50 <br /> M-49A PDB 52.5 Q 10/21/10 <1.0 1.3 <0.50 82 <0.50 <br /> M-50A PDB 52.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.8 <0.50 <br /> M-50A PDB 57.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.4 <0.50 <br /> M-50A PDB 62.5 Q* 1/18/10 <1.0 0.57 <0.50 3.9 <0.50 <br /> M-50A PDB 62.5 Q* 4/19/10 <1.0 0.53 <0.50 3.3 <0.50 <br /> M-50A PDB 62.5 Q* 7/6/2010 <1.0 1.4 <0.50 9.3 <0.50 <br /> M-50A PDB 62.5 Q* 10/21/2010 <1.0 <0.50 <0.50 2.3 <0.50 <br /> M-51A PDB 55.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.4 <0.50 <br /> M-51A PDB 60.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.3 <0.50 <br /> M-51A PDB 65.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.1 <0.50 <br /> M-51A PDB 55.5 Q* 4/19/10 <1.0 <0.50 <0.50 1.2 <0.50 <br /> M-51A PDB 55.5 Q* 7/6/2010 <1.0 <0.50 <0.50 1.3 <0.50 <br /> M-51A PDB 55.5 Q* 10/21/2010 2.2 <0.50 <0.50 2.0 <0.50 <br /> M-52B PDB 24.5 Q* 1/18/10 <1.0 <0.50 <0.50 0.55 <0.50 <br /> M-52B PDB 29.5 Q* 1/18/10 <1.0 <0.50 <0.50 3.6 <0.50 <br /> M-52B PDB 34.5 Q* 1/18/10 <1.0 <0.50 <0.50 3.9 <0.50 <br /> M-52B PDB 39.5 Q* 1/18/10 <1.0 <0.50 <0.50 3.5 <0.50 <br /> M-52B PDB 34.5 Q* 4/28/10 <1.0 <0.50 <0.50 2.6 <0.50 <br /> M-52B PDB 34.5 Q* 7/6/2010 <1.0 <0.50 <0.50 2.5 <0.50 <br /> M-52B PDB 34.5 M 10/21/2010 <1.0 <0.50 <0.50 2.4 <0.50 <br /> M-52B PDB 34.5 M 11/23/2010 <1.0 <0.50 <0.50 1.5 <0.50 <br /> M-52B PDB 34.5 M 12/21/2010 <1.0 <0.50 <0.50 1.2 <0.50 <br /> M-53B PDB 24.5 Q* 1/18/10 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> M-53B PDB 29.5 Q* 1/18/10 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> M-53B PDB 34.5 Q* 1/18/10 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> MLM_5 <br /> 53B PDB 39.5 Q* 1/18/10 <1.0 <0.50 <0.50 1.5 <0.50 <br /> PDB 39.5 Q* 4/28/10 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> PDB 39.5 Q* 7/6/2010 <1.0 0.83 <0.50 0.77 <0.50 <br /> PDB 39.5 Q* 10/21/2010 <1.0 <0.50 <0.50 <0.50 <0.50 <br /> Notes: <br /> 1,1-DCE=1,1-dichloroethene (d)Sample if it becomes operational. <br /> 1,1-DCA=1,1-dichloroethane (e)Sampling interval changed to quarterly per the TRAP workplan(ECM,2007). <br /> B: Biennial sampling(odd-numbered years) Inf/Eff: Influent and Effluent sampling(occurs monthly for operating extraction wells) <br /> A: Annual sampling *Well not listed in MRP <br /> SA: Semi-annual sampling in second and fourth quarters,typically. **Monitored monthly following Off-Site system shut down. <br /> M:Monthly sampling :Data Not available or Unknown. <br /> Q: Quarterly sampling Blue text indicates a change to the sampling frequency per the 2010 MRP <br /> NS:Not Sampled <br /> NR:Sampling Not Required. <br /> Page 5 of 5 <br />