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Environmental Fate and Transport of Arsenical Feed Amendments for Animal Agriculture

Managing waste from animal agriculture is not a new issue, but recent trends to condense livestock into intensive animal feeding operations (AFOs), combined with new chemicals and pharmaceuticals that enhance weight gain in the animals, have exacerbated the problems. Approximately 450,000 AFOs are now active in the United States, and because of the large volume of manure that is produced, AFOs can pose serious risks to local and regional water quality, ecology, and human health. The U.S. Geological Survey (USGS) is conducting research on the environmental fate and transport of arsenical feed amendments from poultry houses in several small watersheds including the Pocomoke River Basin on the southern Delmarva Peninsula in Maryland. The Pocomoke River watershed is underlain by Coastal Plain sediments, which are iron-rich and heavily ditched. Ditching enhances the potential for high infiltration and contaminant transport, but the iron deposits provide a high adsorption potential for arsenic and may be trapping the arsenic in the watershed.

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Date Of Record Release 2010-01-19 17:16:44
Description Managing waste from animal agriculture is not a new issue, but recent trends to condense livestock into intensive animal feeding operations (AFOs), combined with new chemicals and pharmaceuticals that enhance weight gain in the animals, have exacerbated the problems. Approximately 450,000 AFOs are now active in the United States, and because of the large volume of manure that is produced, AFOs can pose serious risks to local and regional water quality, ecology, and human health. The U.S. Geological Survey (USGS) is conducting research on the environmental fate and transport of arsenical feed amendments from poultry houses in several small watersheds including the Pocomoke River Basin on the southern Delmarva Peninsula in Maryland. The Pocomoke River watershed is underlain by Coastal Plain sediments, which are iron-rich and heavily ditched. Ditching enhances the potential for high infiltration and contaminant transport, but the iron deposits provide a high adsorption potential for arsenic and may be trapping the arsenic in the watershed.
Classification
Resource Type
Format
Subject
Source United States Geological Survey
Keyword Fate and transport, Modeling, Models, Computers
Date Of Record Creation 2010-01-19 17:12:37
Education Level
Date Last Modified 2010-06-13 15:12:18
Creator C.V. Miller, T.C., Hancock, J.M. Denver
Language English
Date Record Checked: 2010-01-19 00:00:00 (W3C-DTF)

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