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WASTE DISCHARGE REQUIREMENTS ORDER R5-2013-0028 -36- <br /> DELICATO VINEYARDS, INC. <br /> DELICATO FAMILY VINEYARDS <br /> SAN JOAQUIN COUNTY <br /> 9. Application of treated wastewater to the LAAs via flood irrigation shall only occur <br /> on furrows graded or irrigation checks configured so as to achieve uniform <br /> distribution, minimize ponding, and provide for tailwater control. Furrow runs and <br /> irrigation checks shall not be longer and slopes shall not be greater than what <br /> permits reasonably uniform infiltration and maximum practical irrigation <br /> efficiency. <br /> 10.There shall be no standing water in the LAAs 24 hours after wastewater is <br /> applied, except during periods of heavy rains sustained over two or more <br /> consecutive days. <br /> 11.Irrigation shall not be performed when the ground is saturated. <br /> 12.Hydraulic loading of wastewater and supplemental irrigation water shall be at <br /> reasonable agronomic rates designed to: <br /> a. Maximize crop nutrient uptake; <br /> b. Maximize breakdown of organic waste constituents in the root <br /> zone; and <br /> c. Minimize the percolation of waste constituents below the root <br /> zone. <br /> 13.The LAAs shall be managed to prevent breeding of mosquitoes. In particular: <br /> a. There shall be no standing water 48 hours after irrigation ceases; <br /> b. Tailwater ditches shall be maintained essentially free of emergent, <br /> marginal, and floating vegetation; and <br /> c. Low-pressure and unpressurized pipelines and ditches accessible <br /> to mosquitoes shall not be used to store wastewater. <br /> F. Solids Disposal Specifications <br /> 1. Solids refer to screenings, pomace, diatomaceous earth and other <br /> residual or separable waste solids associated with the winemaking <br /> process. <br /> a. Winery sludge and other solids shall be removed from sumps, screens, <br /> wastewater ponds, etc. as needed to ensure optimal operation and adequate <br /> hydraulic capacity. Winery solids drying operations, if any, shall be designed <br /> and operated to prevent leachate generation and will include a provisions to <br /> return leachate to the wastewater system. <br />