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Table 3 <br /> 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 /> Mormon Slough(cont.) <br /> MS(cont.) 1/21/08 10.22 --- 1.62 --- <br /> 4/21/08 9.67 --- 2.17 --- <br /> 7/21/08 8.55 --- 3.29 --- <br /> 10/20/08 8.91 --- 2.93 --- <br /> 1/19/09 8.52 --- 3.32 --- <br /> 4/20/09 10.98 --- 0.86 --- <br /> 7/27/09 7.25 --- 4.59 --- <br /> 10/19/09 NM --- NM --- <br /> 1/18/10 8.21 --- 3.63 --- <br /> 4/19/10 8.36 --- 3.48 --- <br /> 7/19/10 10.36 --- 1.48 --- <br /> 10/18/10 10.41 --- 1.43 --- <br /> 1/24/11 8.51 --- 3.33 --- <br /> 4/18/11 9.50 --- 2.34 --- <br /> 7/18/11 9.58 --- 2.26 <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 /> 1 MW-5,MW-10,and MW-11 were damaged and could not be sampled in May 2002. <br /> 2 Thickness of SPH not recorded at 2AMW-14 and 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 /> 4 SPH was too thick to read DTW. <br /> 5 Unable to measure DTW; SPH thickness greater than length of bailer(3 feet in length). <br /> 6 Unable to measure DTW due to emulsified SPH. <br /> 7 Well buried due to grading associated with construction. <br /> 8 Well sampled and gauged,but not applicable to report because well was destroyed and reinstalled and needs to be <br /> resurveyed,well gauging data not applicable. <br /> 9 Well converted to flush mount and resurveyed by Morrow Surveying on 12/5/06 <br /> 10 Well resurveyed by Morrow Surveying on 12/5/05 <br /> 11 Sheen detected after purge <br /> 12 Well converted to flush mount and resurveyed on March 21,2007 <br /> 13 Well surveyed March 21,2007.Well was initially installed on March 22,2006 for pilot testing and was added to quarterly <br /> monitoring activities during the first quarter 2007. <br /> 14 Wells re-surveyed April 9,2007. <br /> 15 Wells surveyed by Stantec during the Fourth Quarter 2008. <br /> 16 Wells destroyed in November 2008 as part of the Unocal excavation activities by Treadwell and Rollo. <br /> 17 Well inaccessible during 2008 survey. <br /> 16 Well MW-06R reinstalled in close proximity to MW-6 by Wallace-Kuhl in November 2008. <br /> Groundwater elevation corrected for the presence of SPH;density of SPH assumed to be 0.86 g/mL. Density of H2O(1.0 g/mL)minus <br /> density of SPH(0.86 g/mL)equals multiplier factor of 0.14. <br /> 19 Unable to access monument. <br /> Stantec <br /> I:\Tidewater\TW Stockton(P2A)\Tables\QMR Tables\2011\3011\20110916-Parcel2A(Table 3)Historical Water Levels 3Ql l-CL.xlsx Page 56 of 56 <br />