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0 <br /> Jim Crandell 3 <br /> Robert Mondavi Winery 8 October 2004 <br /> b. A Groundwater Characterization Workplan that describes a plan to evaluate the hydrogeology <br /> and water quality of shallow groundwater underlying the facility, the relationship between the <br /> river and underlying shallow groundwater, and the impact of historical process wastewater <br /> discharge and other discharge practices on underlying shallow groundwater. If the workplan <br /> proposes to use existing domestic, irrigation, or off-site monitoring wells, then the workplan <br /> shall demonstrate why the proposed wells should be used as part of the groundwater monitoring <br /> network,provide well construction details (well logs, as-builts, down-hole investigations) for <br /> proposed wells, describe when and how the well is pumped, and justify why the proposed well(s) <br /> is preferential to a dedicated monitoring well. The workplan shall identify the wells to be <br /> sampled, sampling frequency, and constituents to be analyzed. The need for installation of <br /> additional monitoring wells shall be discussed. If the installation of additional monitoring wells <br /> is found to be necessary, the Groundwater Characterization Workplan shall include a <br /> Groundwater Well Installation Workplan that describes the installation of additional monitoring <br /> wells to determine background conditions and assess the impacts of process wastewater <br /> discharge on underlying groundwater. The Groundwater Well Installation Workplan shall be <br /> prepared in accordance with, and shall include the items listed in, Section 1 of the enclosed <br /> Requirements for Monitoring Well Installation Workplan and Monitoring Well Installation <br /> Reports. <br /> 2. If the Groundwater Characterization Workplan included a Groundwater Well Installation <br /> Workplan, then by 1 April 2005, Robert Mondavi Corporation shall submit a Monitoring Well <br /> Installation Report that contains the information described in Section 2 of the enclosed <br /> Requirements for Monitoring Well Installation Workplan and Monitoring Well Installation <br /> Reports. <br /> 3. By 1 March 2006, Robert Mondavi Corporation shall submit a Wastewater Characterization and <br /> Wastewater System Evaluation Report that presents the results of the approved wastewater <br /> characterization and wastewater system evaluation. The report shall characterize the wastewater, <br /> identify potential problem areas, and evaluate potential upgrades to the existing wastewater system <br /> that will protect underlying groundwater from degradation by future discharges. <br /> 4. By 1 May 2006, Robert Mondavi Corporation shall submit a Groundwater Characterization Report <br /> that describes the hydrogeologic conditions and groundwater quality underlying the facility, and the <br /> relationship between the river and underlying shallow groundwater. The report shall also assess the <br /> impact of historical process wastewater discharge and other historical practices on underlying <br /> shallow groundwater, and evaluate the potential impacts of future wastewater discharges on <br /> underlying shallow groundwater. The report shall identify the wells that were sampled, sampling <br /> frequency, and constituents that were analyzed. <br /> 5. By 1 August 2006, Robert Mondavi Corporation shall submit a Report of Waste Discharge (RWD) <br /> that includes a Wastewater System Improvement Plan and a Final System Design. The Wastewater <br /> System Improvement Plan shall evaluate the wastewater, salinity, and nitrate reduction, reuse, <br /> recycling and treatment options, and shall identify best management practices and best practicable <br /> California Environmental Protection Agency <br /> �d Recycled Paper <br />