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WASTE DISCHARGE REQUIREML_-S ORDER NO. 11 SPENKER RANCH,INC. JESSIE'S GROVE WINERY SAN JOAQUIN COUNTY 12. Discharges to land application area shall be managed to minimize both erosion and runoff from the irrigated area. 13. The resulting effect of the wastewater discharge on the soil pH shall not exceed the buffering capacity of the soil profile and shall not cause significant mobilization of soil constituents such as iron and manganese. 14. Application of wastewater to the land application area via flood irrigation shall only occur on furrows graded so as to achieve uniform distribution,minimize ponding and provide for tailwater control. Furrow runs shall be no longer and slopes shall be no greater than what permits reasonably uniform infiltration and maximum practical irrigation efficiency. The minimum furrow slope shall not be less than 0.2 percent. 15. Wastewater application areas shall be allowed to dry for at least 72 hours from the end of wastewater application. 16. There shall be no standing water in the land application area or landscaped areas 24 hours after wastewater is applied, except during periods of heavy rains sustained over two or more consecutive days. E. Solids/Sludge Disposal Requirements: 1. Collected screenings, sludge, and other solids removed from winery wastewater shall be disposed of in a manner that is consistent with Title 27, Division 2, Subdivision 1 of the CCR and approved by the Executive Officer. 2. Winery sludge and other solids shall be removed from sumps, screen, septic tank, etc. as needed to ensure optimal operation and adequate hydraulic capacity. Winery solids drying operations, if any, shall be designed and operated to prevent leachate generation. 3. Storage and disposal of domestic wastewater sludge (septage) shall comply with existing Federal, State, and local laws and regulations, including permitting requirements and technical standards. 4. Sludge and other solids shall be removed from domestic wastewater septic tank(s) as needed to ensure optimal operation and adequate hydraulic capacity. A duly authorized carrier shall haul sludge, septage, and domestic wastewater. 5. Any proposed change in solids use or disposal practice from a previously approved practice shall be reported to the Executive Officer at least 90 days in advance of the change. F. Groundwater Limitations: The discharge, in combination with other sources, shall not cause underlying groundwater to contain waste constituents in concentrations statistically greater than background water quality. G. Provisions: WASuMH.Tri Sm baq.u,'J—idG—c'JmicG--WDR.