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WASTE DISCHARGE REQUIREMi._. S ORDER NO. 13 SPENKER RANCH, INC. JESSIE'S GROVE WINERY SAN JOAQUIN COUNTY f. By 1 December 2004, the Discharger shall submit a Groundwater Well Installation Report of Results consistent with the guidelines presented in Attachment C. g. By 31 January 2005, the Discharger shall submit and implement a workplan for a Salinity Reduction Study. The study shall look at all aspects of winery waste and shall investigate methods to reduce the concentration of dissolved solids in the wastewater. At a minimum, the salinity reduction report shall include a discussion of the winemaking chemicals, cleaning and sterilization procedures, vineyard practices, and salinity monitoring. h. By 30 March 2006, the Discharger shall submit a Background Groundwater Quality Study Report. For each groundwater monitoring parameter/constituent identified in the MRP, the report shall present a summary of monitoring data, calculation of the concentration in background monitoring wells, and a comparison of background groundwater quality to that in wells used to monitor the wetland/stormwater pond and land application area. Determination of background quality shall be made using the methods described in Title 27, §20415(e)(10), or equivalent, and shall be based on data from at least four consecutive quarterly(or more frequent) groundwater monitoring events. For each monitoring parameter/constituent, the report shall compare measured concentrations for compliance monitoring wells with the calculated background concentration. The report shall be prepared by or under the direction of an engineer or geologist registered to practice in California pursuant to California Business and Professions Code §6735, 7835, and 7835.1. If the Background Groundwater Quality Study Report shows that the wastewater discharge has impacted, or is likely to impact groundwater quality, then upon request by the Executive Officer the Discharger shall submit Groundwater Mitigation Plan which shall evaluate contaminant control alternatives, describe a preferred alternative, and proposed a timeline to meet the Groundwater Limitations of this Order. The selected contaminant control alternative must comply with State Water Resources Control Board Resolution No. 68-16 and be consistent with the most recent Basin Plan 2. In accordance with California Business and Professions Code sections 6735, 7835, and 7835.1, engineering and geologic evaluations and judgments shall be performed by or under the direction of registered professionals competent and proficient in the fields pertinent to the required activities. All technical reports specified herein that contain workplans for, that describe the conduct of investigations and studies, or that contain technical conclusions and recommendations concerning engineering and geology shall be prepared by or under the direction of appropriately qualified professional(s), even if not explicitly stated. Each technical report submitted by the Discharger shall contain a statement of qualifications of the responsible licensed professional(s) as well as the professional's signature and/or stamp of the seal. 3. The Discharger shall comply with the Monitoring and Reporting Program No. , which is part of this Order, and any revisions thereto as ordered by the Executive Officer. 4. The Discharger shall comply with the "Standard Provisions and Reporting Requirements for W:\SmWbdmT7 San JoaquinVasie's GrovcQasicGrove WDRda