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Kennedy/Jenks Consultants The CPT and Hydropunchm test holes will be pressure grouted with bentonite after the groundwater samples have been taken. A standard operating guideline for the CPT installation ` and HydropunchTm sampling activities is attached in Appendix B of this work plan. The eight (8) proposed CPT tests can be completed in five to ten working days dependent on the depth of first encountered groundwater or shallow aquifer zone. In the event that a point source (or sources) of potential influence to groundwater is identified, installation of additional soil borings and sampling to delineate potential surface sources may be -- necessary. Source delineation soil sampling will be performed on an as-needed basis based primarily on analyses of monitoring well and CPT information. 2.7 Offsite Data Compilation No new offsite borings or monitoring wells are proposed at this time for sampling, since the Facility property is sufficiently large to retain monitoring wells onsite and define gradients. Available offsite groundwater elevations and groundwater quality data will be compiled to evaluate potential offsite influences on onsite groundwater. To characterize the regional groundwater and geology, the area of interest will be delineated in terms of township and range coordinates. The groundwater data that are from the same shallow groundwater aquifer beneath the Facility will be compiled. Data such as groundwater elevation, groundwater quality, and well completion logs that are available from the Department of Water Resources (DWR)will be compiled. Groundwater elevation data are generally reported in files of data prior to 1990 and another file of data from 1990 to present. 'typically, groundwater quality data includes a list by sample date of constituents analyzed as well as the units for those measurements. These two data sets generally are not characterized for the same wells. Well completion logs will also be requested for all drilled wells in the study area. 2.7.1 Data Interpretation Based on calculated gradients in Table 4, MW-1 and MW-3 are considered to be hydraulically downgradient of the process water land application areas and upgradient of sanitary wastewater septic tank and leach field systems. MW-2 may be considered to be located hydraulically upgradient of the process water land application areas, although MW-2 is slightly offset to the west and may not accurately represent background water quality directly upgradient of the land application areas. Based on concentration trend plots of MWA data in Figures 6 through 12, it can be interpreted that this well is more likely cross-gradient of the Facility in general due to the consistent relative concentration levels that are between the upgradient well MW-2 and those of the downgradient well MW-3. In fact, from a water chemistry standpoint MWA is more similar in concentration to the upgradient well MW-2 than that of MW-3. With the proposed additional wells MW-4 and MW-5, MW-2 can be more definitively classified. The volume and percentage of shallow groundwater that potentially passed through the screen intervals of each monitoring well and the total amount of groundwater flow into and out of Groundwater Protection Work Plan, The Wine Group Page 2-6 Franzia Winery, Ripon, California gvs9r waa+i.roM 3 CIT:?[_+:..'e��ryv4reporlslw_rvY.�fanifin��n9ac