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Table t <br /> Data Quality Objectives <br /> Lincoln Center <br /> Stockton,California <br /> Step <br /> Target Pao lationp A and B Zone hydrostrafigraphic units <br /> Spatial Limits:wells completed in A and B Zones _ <br /> Hydraulic Decision Unit:screened interval of A and B Zone wells _ <br /> Characteristics Temporal Limits throughout the operation of the GWETS _ <br /> Practical Constraints extracted water disposal <br /> Target Population:water levels in well pairs <br /> Spatial Limits existing and newly installed well pairs <br /> Vertical Gradients Decision Unit:screened intervals in well pairs <br /> Temporal Limits:two monitoring events per year <br /> Practical Constraints:access to wellheads <br /> Target Population-in situ groundwater present in the A and B Zones <br /> Spatial Limits:exploratory boring locations <br /> Decision Unit:depth of saturation to total depth of the boring <br /> Grab Groundwater T reLimits'drilling and sampling to be conducted once during a single mobilization <br /> Samples <br /> Precticel Constraints:locations will be adjusted in the field based on access,actual depth o <br /> the borings may be inhibited by drilling conditions,sample collection may be inhibited by the <br /> 4.Define amount of water Flowing into the boring at the sampling depth <br /> Boundaries Target Population-existing and new wells <br /> (continued) Spatial Limits:locations of A,B,and c Zone wells <br /> Monitoring Well — <br /> Groundwater Decision Unit:screened interval of each well — <br /> Samples Temporal Limits:two sampling events per year <br /> Practical Constraints:access to wellheads <br /> Target Population:saturated material in A and B Zones <br /> Spatial Limits:exploratory boring locations <br /> Decision Unit:professional judgment basad on lithology <br /> Physical Temporal Limits:drilling and sampling to be conducted once during a single mobilization <br /> Characteristics <br /> Practical Constraints:locations will be adjusted in the field based on access,actual depth o <br /> the borings may be inhibited by drilling conditions,sample collection may be inhibited by core <br /> recovery <br /> Target Population-existing and new wells <br /> Spatial Limits:locations of A,5, n wells <br /> C Zone wells <br /> Monitoring Well Decision Unit:screened interval of each well <br /> Depth to Water Temporal Limits:two sampling events per year <br /> Practical Constraints:access to wellheads <br /> Parameter:concentration and distribution of COPCs <br /> Exposure Inference:receptor risk from COPCs in groundwater <br /> Parameter:lithologic material and thickness <br /> Inference:lithologic conditions below ground surface <br /> Parameter:transmissivity <br /> Inference:hydraulic characteristics of the A and B Zone aquifers <br /> Parameter:groundwater level monitoring <br /> Inference:depth to saturation condition,presence or absence of groundwater in shatigraphic <br /> 5.Analyticunits,relative ability of stratigraphic units to produce water,shallow and deep groundwater <br /> Approach <br /> Hydrostratigraphy occurrence in separate or connected aquifers <br /> Parameter:analytical results of grab groundwater samples from exploratory borings <br /> Inference:concentrations of COPCs with depth <br /> Parameter:analytical results of groundwater samples from wells <br /> Inference:concentration and lateral distribution of COPCs <br /> Parameter:analytical results of geochemical charateristics of soil samples <br /> Inference.physical charateristics of aquifer materials <br /> Groundwater Parameter:analytical results of groundwater samples from wells <br /> Duality Inference:concentration and lateral distribution of COPCs <br /> Geosyntec Consultants,Inc. <br /> Page 2 of 3 <br />