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WASTE DISCHARGE REQUIREMENTS ORDER R5-2013-0028 -6- DELICATO VINEYARDS, INC. DELICATO FAMILY VINEYARDS SAN JOAQUIN COUNTY 22. The 2004 CAO required that the Discharger identify and describe potential wastewater and salinity reduction, reuse, recycling, and treatment opportunities. The 2012 RWD states that the Discharger has implemented some salinity source reduction, but the level of salinity reduction has not been adequately quantified. Effluent monitoring data since 2002 do not indicate that salinity reduction has been achieved. Therefore, this Order requires that the Discharger complete a post- source control salinity reduction evaluation to quantify the benefits achieved by salinity reduction measures previously implemented and provide a feasibility analysis of additional reduction measures. 23. Revised MRP 96-077 does not require wastewater monitoring to characterize salinity concentrations by species. Because potassium has a higher molecular weight than sodium, substitution of potassium for the previous use of sodium- based chemicals may not be reflected in the FDS results. 24. The facility currently does not have a process wastewater treatment system. The existing LAAs are located on the western and northern portions of the facility property and are referred to as the "southwest check" (LAA 1 on Attachment B) and the "northeast check" (LAA 3 on Attachment B). Wastewater is applied to the LAAs by flood irrigation, and the water is treated passively by the soil and/or taken up by grasses and weeds. Proposed Changes to the Discharge 25. The Discharger is planning to increase winery production in three phases to ultimately crush up to 200,000 tons of grapes annually. Each phase of the expansion will correspond to an increase of about 20,000 tons of fruit per year. Although the timing of implementing each phase is dependent on market conditions and availability of wine grapes, the Discharger plans to complete the final phase expansion in five years. 26. The Discharger will upgrade fermenters, presses, hoppers, bottling, and barrel washing equipment to achieve a 200,000 ton processing capacity. Although additional wastewater will be generated from processing and cleaning activities. Some of the new equipment will be outfitted with clean-in-place systems, which will improve overall water use efficiency and salinity reduction. 27. The Discharger plans to construct a new wastewater system and cropped LAAs as part of the facility expansion. Attachment C, which is attached hereto and made part of this Order by reference, presents a flow diagram that identifies process flow, including all sumps, associated conveyances, screening, storage, metering and sampling locations, and LAAs. A preliminary wastewater system design submitted on 1 October 2012 included the following general elements.