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Table 5 <br /> Comparison of B-Zone Concentrations in Wells for Stockton Avenue <br /> Monitoring Well Installation Report <br /> Former Nestle USA, Inc. Facility <br /> Ripon, CA 95366 <br /> Screened Sample Analytical results (pg/1) <br /> Name Interval Sample Depth (bgs) Date <br /> (feet bgs) TCE cis-1 2-DCE trans-1 2-DCE 1 1 -DCE 1 1-DCA CF VC <br /> 02/09/2009 6.8 1.5 <0.5 <0.5 <0.5 <1.0 <0.5 <br /> Well E-2 47.75-65.5 Screened Interval 04/24/2009 5.4 1.1 <0.5 <0.5 <0.5 <1.0 <0.5 <br /> 07/29/2009 5.6 1.0 <0.5 <0.5 <0.5 <1.0 <0.5 <br /> 10/06/2009 6.3 1.0 <0.5 <0.5 <0.5 <1.0 <0.5 <br /> Well M-81B 21 -41 PDB @ 38.5 04/10/2009 17 <0.5 <0.5 <0.5 <0.5 <1.0 <0.5 <br /> SimulDrobe at 32.5 feet 12/20/2009 5.0 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> Boring M-52B 22-42 SimulDrobe at 36.5 feet 12/20/2009 6.1 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> SimulDrobe at 40.5 feet 12/20/2009 0.68 <0.50 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> SimulDrobe at 31.33 feet 12/16/2009 5.5 0.89 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> Boring M-53B 22-42 SimulDrobe at 34.42 feet 12/16/2009 2.2 0.63 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> Simul robe at 40.17 feet 12/16/2009 1 10 2.4 <0.50 <0.50 <0.50 <1.0 <0.50 <br /> Notes: <br /> Ng/L=micrograms per liter <br /> bqs=below ground surface <br /> PDB=Passive Diffusion Baq sampler <br /> CF=Chloroform <br /> TCE=trichloroethene <br /> cis-1,2-DCE=cis-1,2-dichloroethene <br /> trans-1,2-DCE=trans-1,2-dichloroethene <br /> VC=vinyl chloride <br /> 1,1-DCE= 1,1-dichloroethene <br /> 1,1-DCA= 1,1Aichloroethane <br /> Page 1 of 1 <br />