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. .,:.-1_- - r.----- <br /> . ., ,► 425-3 <br /> Storage period. The storage period is the maximum anticipated length of time <br /> between emptying, based on climate, crops, equipment, and labor. _ . . _ <br />, r ' To reduce the necessity of spreading on frozen ground, a storage for a minimum <br /> of 180 days shall be provided. Storage for longer periods is desirable and <br /> recommended especially for northern areas of the state or where wet soils <br /> prevent spreading in early spring. <br /> Design volume. Waste storage ponds shall store the design volume. Design <br /> . volume is the minimum volume required to store waste for the storage period. <br /> It is the total of the following. <br /> With Drainage Area Without Drainage Area - <br /> -+1. Manure, waste water, and normal 1. Manure and waste water. J <br /> • runoff. 1/ . �_. <br /> _ta. Z s. -— f <br /> . --2. Normal precipitation less evapor- 2. .. Normal precipitation less evapor- . _ <br /> ation on pond surface. 1/ ation on pond surface. 1/ <br /> • 3. 25 year,'24-hour runoff. 3. 25 year, 24-hour precipitation on <br /> _ - :>_ v pond surfac e. <br /> _ <br /> - "4. Solids accumulation: 2/ 4. Solids accumulation. 2/ <br /> 1/ Accumulated during the storage period. <br /> Solid manure, associated liquids and bedding may be stored in a solid waste <br /> . . . storage pond or structure. The facility shall have a capacity to store the <br /> C, <br /> waste .for the storage period. Manure without adequate bedding will not _ <br /> tack. and the capacity is calculated as a level pond. <br /> _ 2/ For the period between solids removal . This applies mainly_ to ponds used <br /> to store waste water and polluted runoff, and refers to the residual solids <br /> after the liquids have been removed. <br /> .Tables 3 and,4 are a guide to manure production from various animals. <br /> - <br /> If possible, the volume of wash water should be determined by actual measure- <br /> ment or estimated by a reliable method such as calibration of a faucet, hose, <br /> or spray nozzle and applying the rate of water used to the time of operation. <br /> Table 5 may be used for estimating the volume of milkhouse and milking parlor <br /> wastes. - _ - <br /> USDA-SCS-Wisconsin <br /> ( - Section IV <br /> Technical Guide <br /> 10/83 <br />