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WASTE DISCHARGE REQUIR&,,,NTS ORDER NO.R5-2004-0079 3 SPENKER RANCH, INC. JESSIE'S GROVE WINERY SAN JOAQUIN COUNTY of the 70 acre land application area's available hydraulic capacity based on the lowest published infiltration value and a safety factor of five-percent. The Discharger is allowed to discharge wastewater to the land application area during rain events provided all requirements of this Order are complied with. 12. The Discharger has no wastewater storage capacity. Therefore, all wastewater generated must be discharged soon after generation. The Discharger must take this fact into consideration when planning operations that generate wastewater. Climatic conditions or land application area conditions (saturated soil, odors, etc.) may require winery process schedule changes to comply with the discharge specifications contained in this Order. 13. The majority of the processing area, including the crush pad, is not roofed. Stormwater mixes with wastewater; therefore, all the water must be handled as industrial wastewater. 14. The Discharger does not use water-softening equipment such as ion exchange water treatment. LAND APPLICATION SYSTEM 15. The Discharger proposes to dispose of screened and settled winery effluent by irrigating 70 acres of cropped pasture using a water truck. A sprinkler irrigation system may be installed in the future, and is acceptable as long as wastewater applications are performed consistent with the requirements in this Order. Flood irrigation is acceptable as long as the land application area is prepared to allow even distribution and prevent spills of wastewater/supplemental irrigation water outside the land application area. Because the wastewater application will not be sufficient to meet the crop irrigation needs during summer months, supplemental irrigation water will be applied. 16. Pasture grass will be cut and removed from the land application area or removed by animals grazing on the pasture. Removal of the crop will remove nitrogen and other dissolved solids that are taken up by the crop. 17. There is less nitrogen in the wastewater than the cropped land application area will utilize. This is based on a nitrogen demand of 100 lbs/acre-year for the 70 acre land application area, A conservative nitrogen effluent concentration (25 mg/L as an annual average), and annual wastewater generation rate of 866,500 gallons. The 70 acre land application area will take up approximately 7,000 pounds of nitrogen, while the total annual wastewater nitrogen application will contain approximately 181 pounds of nitrogen. 18. The application of the winery wastewater to 70 acres of land should not cause an increase in the TDS concentration in the underlying groundwater. TDS is composed of both Volatile Dissolved Solids (VDS) and Inorganic Dissolved Solids (IDS). The proportion of VDS to IDS in wastewater varies with the source, but 50-percent of the TDS in winery wastewater may be in the volatile form. These VDS are biologically treated by soil microorganisms in a well managed wastewater treatment and land application system, and should not enter the groundwater. Therefore, of the approximately 14,453 pounds of TDS in the wastewater, about 7,226 pounds are expected to be in the inorganic fraction, equating to an annual load of 103 lbs/acre for the 70 acre land application area. However, plants take up some dissolved solids at variable rates up to of 2,000 lbs/acre-year,