Building Environmental Leaders in Animal Agriculture (BELAA) Liquid Manure - Below-Building Pit Advantages  Relatively high nutrient density  Low/moderate nutrient loss  No rainfall effects  May only need to handle manure during land application  Disadvantages  Cost  May have more odor  May require ventilation  Animal/worker health issues from prolonged exposure to gases  May not be appropriate for areas with high water tables or geologic concerns  May be difficult to remove solids from liquid pits
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