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LIQUID AND SOLID MANURE MANAGEMENT <br /> f LIQUID MANURE MANAGEMENT <br /> Fi Liquid manure water management means controlling or regulating irrigation/manure water <br /> applications in a way that will satisfy crop nutrient and water requirements without wasting water, <br /> r <br /> eroding soil, or degrading soil and water quality. It involves applying nutrients and water in <br /> accordance with specific crop needs'in amounts that can be retained in the soil for crop use and <br /> at rates and times that are consistent with soil intake characteristics and erosion hazard. <br /> ' The amount of application must be based upon either the nutrient requirements of the crop or <br /> consumptive use requirements of the crop, whichever factor is limiting. <br /> For example, to achieve a desired nutrient loading, the irrigation requirement might be exceeded. <br /> In this case, irrigation requirements would govern because meeting the nutrient requirement <br /> requires an excess water application, leading to excessive deep percolation and leaching of <br /> nutrients below the root zone.. <br /> If meeting the irrigation requirement is not a management objective, water requirements must still <br /> be considered so that excess leaching or runoff can be avoided. <br /> z Liquid Manure Storage <br /> The liquid manure will be stored in ponds which meet the construction standards in the California <br /> Code of Regulations (Title 27, Division 2, .Subdivision 1) and will be able to contain all liquid <br /> manure and stormwater generated during the rainy season (approximately 180 days) plus a 25- <br /> year 24-hour storm. <br /> FThe construction of the ponds will prevent releases of organic matter, nutrients, and pathogens to <br /> ground or surface water by implementing the following measures: <br /> a. All manure separation pits and process water lagoons will be constructed so that the <br /> bottoms of the pits and lagoons are at least five feet above the highest expected <br /> groundwater levels. <br /> b. The pits and lagoons will be maintained so that the integrity of the seal is ensured. <br /> C. The holding ponds utilized for liquid manure will be lined with soils which contain <br /> r at least 10 percent clay and not more than 10 percent gravel or be lined with artificial <br /> materials of equivalent impermeability. <br /> d. A qualified professional (i.e., Professional Engineer or Certified Engineering Geologist) will <br /> certify that the ;liner system of a lagoon or pit is installed according to the Regional Water. <br /> FI' See Page 47 for References and Bibliography <br /> O Western Dairy Design Associates,Inc.2003 <br /> Page 33 <br /> F11 <br />