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r � <br /> Fact Sheet No.4 For Dairies <br /> f -5` <br /> Caref <br /> ul management of irrigation water is necessary to ensure that nutrients are applied to cropland at the desired rate <br /> and that adverse impacts to the environment are minimized. Proper irrigation results in even application of nutrients to <br /> cropland and prevents excessive percolation and runoff that can,'respectively, result in adverse impacts to groundwater <br /> x f and surface water. The Irrigation Water Management component of a NIWMp is a written description of procedures <br /> that are followed for proper irrigation, and should address the following topics: <br /> • Procedures that are used.to mix wastewater and "clean" irrigation water <br /> The irrigation system used to apply wastewater to cropland <br /> + • The methods used to determine and control the rate of application <br /> M <br /> • Procedures followed to determine when sufficient water has been applied <br /> F • Physical and management controls used to prevent tailwater containing manure from moving off of the dairy <br /> • 1 <br /> Controls that will be used if it becomes necessary to apply wastewater to land during the rainy season <br /> • Procedures used to prevent irrigation with wastewater from creating nuisance conditions. <br /> f I <br /> In addition <br /> the NIWMP should contain figures that show the location of cropland where manure and wastewater is <br /> applied. The figures should show nearby water courses and ditches, the slope of irrigated lands, the location of wells <br /> { and pimps, and points from.which tailwater can be discharged. If wastewater is applied to property under different ownership than the dairy, a copy of agreements on the application of wa I' <br /> stewater to the property should be included. <br /> y Additional information related to the preparation of'.Nuti-ient and Irrigation Water Management Plans is available in the <br /> Environmental Stewardship Short Course for California Dairy <br /> Cooperative Extension in cooperation with the California Farm Bureauory1i1p1crProdudCers Counc!]vand Westerty of n California <br /> Dairymennited <br /> . For more information about the water quality programs that apply to confined animal facilities, <br /> RWQCB dairy regulatory staff at one of the following offices: contact the <br /> • Sacramento' (916) 255-3000 j <br /> j • Fresno (559) 445-5116 <br /> • Redding (916) 224-4845 <br /> 1 <br /> i <br /> I <br /> i <br /> k <br /> I <br /> l <br /> s <br /> t <br /> d <br /> k i <br /> Fs44d_doc i <br />