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WASTE DISCHARGE REQUIREMENTS ORDER R5-2013-0028 -7- DELICATO VINEYARDS, INC. DELICATO FAMILY VINEYARDS SAN JOAQUIN COUNTY a. Process wastewater, residual solids, and storm water from winery operations will be collected by various drains and conduits, which gravity flow into three existing sumps located within the winery facility. These collection sumps are identified as Winery Sumps 1, #2, and #4. Former Winery Sump #3 has been abandoned. As shown in Attachment C, water collected in Winery Sump #2 is transferred into Winery Sump #4. b. Winery Sumps #1, #2, and #4 each provide approximately 1,980 gallons in temporary storage capacity. Pumps installed in Winery Sumps#1 and #4 deliver an estimated flow rate of 1,200 gallons per minute (gpm) at 54 feet of total dynamic head. c. Upon completion of facility modifications, Winery Sumps#1 and #4 will transfer wastewater through a mechanical screen to separate coarse solids (i.e. debris, pomace, diatomaceous earth, etc.). The screen will be sized to accommodate pumped flow when both Winery Sumps #1 and #4 are operated concurrently during the peak crush flow. Screened solids will be sent to a designated compost area for processing into soil amendment for reapplication in vineyard areas. d. The screened water will be discharged by gravity flow into two 0.25-million gallon (MG) aeration ponds, referred to as PW-1 and PW-2. Aeration ponds PW-1 and PW-2 will be located west of the main winery facility, and south of existing monitoring well MW-2r. The two aeration ponds will be constructed at the location of the current composting area. e. The proposed wastewater system is not designed for extended residence time for complete aerobic degradation of organic constituents before discharge to the LAAs. Therefore, both ponds will be equipped with aerators to provide mixing and to prevent odors. f. Flow meters will be installed downstream of Winery Sumps#1 and #4 before solids separation to measure influent flows. Flow meters will be also installed to measure the amount of effluent discharged from the aeration ponds and supplemental storage to all LAAs. g. An emergency overflow pipe will be installed to allow emergency bypass of screened wastewater around the two aeration ponds and directly to the LAAs. h. The existing unlined wastewater ponds will be abandoned and cleaned out prior to the construction of one or more ponds in this area which will be used as pumping sumps for supplemental irrigation water.