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Table 1 <br /> DPE Historic Liquid Surface Elevation Data <br /> South Shore Parcels-Parcel 2A and Adjacent Areas <br /> West Weber Avenue and North Lincoln Street <br /> Stockton, California <br /> Elevation of Depth to Water Depth to SPH Groundwater Separate Phase <br /> TOC From TOC From TOC Elevation Hydrocarbon <br /> Name Date (feet MSL) (feet) (feet) (feet MSL) (Thickness in Feet) <br /> A Zone Groundwater Monitoring Wells(cont.) <br /> DPE-13 7/19/10 13.59 13.59 -1.82 Sheen <br /> (cont.) 10/18/10 14.52 14.52 -2.75 Sheen <br /> 1/24/11 12.51 12.51 -0.74 Sheen <br /> 4/18/11 11.46 11.46 0.31 Sheen <br /> 7/18/11 10.41 10.41 1.36 Sheen <br /> 10/17/11 12.64 12.64 -0.87 Sheen <br /> 1/17/12 12.49 12.49 -0.72 Sheen <br /> 4/16/12 12.00 11.93 -0.17 0.07 <br /> Explanations: <br /> TOC=Top of Casing SPH=Separate-Phase Hydrocarbons <br /> MSL=Mean Sea Level MTS=Mobile Treatment System <br /> NM=Not measured ---=Not Applicable <br /> MS=Mormon Slough Survey Point <br /> 2 Thickness of SPH not recorded at DPE-4 due to coating of probe with product(Clayton Group Services, <br /> Quarterly Monitoring Report and Annual Report,February 1,2003);therefore depth to liquid elevation was not corrected <br /> for the presence of SPH. <br /> 3 Well gauged prior to the first quarter 2003 monitoring event before commencement of dual-phase extraction by MTS. <br /> 15 Wells surveyed by Stantec during the Fourth Quarter 2008. <br /> Stantec <br /> 20120924-Parcel2A(Tables 1,3)Historical Water Levels 3Q12-CL.xlsx Page 11 of 11 <br />