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Kennedy/Jenks Consultants <br /> 2.2 Task 5 - Prepare Comprehensive Groundwater <br /> Characterization Report <br /> A Groundwater Characterization Report will be prepared and submitted to the CRWQCB by <br /> 31 May 2007. We anticipate that the report will include the following: <br /> • Compilation and analysis of the routine groundwater monitoring data <br /> • Compilation and analysis of data collected as part of the field activities described herein. <br /> • Description of geologic/hydrogeologic conditions at the Facility <br /> • Analysis of vadose zone and groundwater flow and transport mechanisms beneath the <br /> Facility and its relevance to LAA activities and groundwater mounding <br /> • Identification of possible offsite sources and/or past practices that may currently be <br /> contributing to, or may have previously contributed to, current groundwater quality <br /> • Well construction details and sampling results from existing and new monitoring wells <br /> • Upgradient/downgradient statistical analyses, including inter-well group comparisons <br /> (e.g. analysis of variance tests), trend analyses, and analyses of impacts to groundwater <br /> Kennedy/Jenks will perform a groundwater flow and constituent distribution analysis between <br /> offsite and onsite conditions. This evaluation will include trend analysis and source identification <br /> based on groundwater quality data. A detailed evaluation of surrounding land uses and <br /> practices and existing groundwater data will be performed in order to develop an understanding <br /> of the differences (if any) in groundwater quality upgradient, beneath, and downgradient of the <br /> Facility. A trend analysis of the groundwater quality(i.e., constituent versus time for the <br /> constituents of interest) using the offsite wells in addition to the existing onsite wells will be used <br /> to evaluate the spatial and temporal variation in constituent concentrations This will also be <br /> used to assess whether the differences in concentrations can be attributed to activities onsite, <br /> offsite, or both. <br /> The Groundwater Characterization Report will provide a hydrogeological conceptual model of <br /> the groundwater fate and transport mechanisms at the Facility. These data will be interpreted in <br /> context of the regional and Facility-specific groundwater quality assessment. The Report may <br /> include recommendations for additional field activities. <br /> Groundwater Investigation Work Plan Page 18 <br /> Barrel Ten Quarter Circle Winery, Escalon, California <br /> g:Gs-groupladMnOb1031030118.08_barreltenl0&reportslgwinvest wrk ptnUeAda <br />