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WASTE DISCHARGE REQUIREMA_ .'S ORDER NO. 3 SPENKER RANCH, INC. JESSIE'S GROVE WINERY SAN JOAQUIN COUNTY 12. A mobile contract wine bottling service will perform bottling. The bottles arrive at the site already cleaned, and no rinsing occurs prior to filling. Therefore, bottling activities will not generate a high strength waste stream. 13. The septic tank and wetland are expected to reduce concentrations of volatile dissolved solids in the wastewater, resulting in a lower concentration of Total Dissolved Solids (TDS) discharged to the land application area. The RWD does not quantify the expected reduction. 14. The February 2004 RWD contained a water balance for the wastewater treatment and disposal system. The water balance estimates the maximum daily process wastewater flow rate at 1,660 gallons per day(gpd) during the peak grape processing period, with estimated peak daily process flow rates during the off-season of approximately 665 gpd. The water balance utilizes 100-year annual return rainfall amounts. 15. Based on an hydraulic analysis, the February 2004 water balance shows that 0.6 acre land application area has adequate capacity to accept all wastewater and rainfall (using the 100-year return annual precipitation total). In addition, the RWD includes the use of the stormwater pond as a contingency storage feature. Staff estimates the wastewater discharge is less than 16-percent of the 0.6 acre land application area's available hydraulic capacity based on the lowest published infiltration value. The Discharger is allowed to discharge wastewater to the land application area during rain events provided all requirements of this Order are complied with. 16. The Discharger has very limited wastewater storage capacity in the wetlands and the stormwater pond. Therefore, all wastewater generated must be discharged soon after generation. The Discharger must take this limit into consideration when planning operations that generate wastewater. Climatic conditions or saturated soil may require winery process schedule changes to comply with the discharge specifications contained in this Order. 17. The majority of the processing, including the crush area, is conducted in areas without roofs to prevent commingling of stormwater runoff with process wastewater. Stormwater mixes with wastewater; therefore all the water must be handled as industrial wastewater. 18. The Discharger does not use water-softening equipment such as ion exchange water treatment. LAND APPLICATION SYSTEM 19. The Discharger proposes to dispose of treated winery effluent by irrigating 0.6 acres of cropped pasture using a sprinkler irrigation system. 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. 20. Pasture grass will be cut and removed from the land application area. Removal of the crop will remove nitrogen and other dissolved solids that are taken up by the crop. W:\SuWbrimTSm JoequinVJmsic's Gmve,JmieGrove_WDRdoc