Virginia Cooperative ExtensionCollins, Eldridge R. Jr.2015-08-062015-08-062009-05-01http://hdl.handle.net/10919/56130Livestock and poultry yards, such as barnyards, holding areas and feedlots, and areas around production buildings are areas of concentrated animal wastes. This publication reviews the systems necessary to keep nitrate levels within federal and state limits.12 pagesapplication/pdfen-USVirginia Cooperative Extension materials are available for public use, re-print, or citation without further permission, provided the use includes credit to the author and to Virginia Cooperative Extension, Virginia Tech, and Virginia State University.Natural Resources & Environmental QualityExtension publicationhttp://pubs.ext.vt.edu/442/442-908/442-908_pdf.pdfLivestockPoultryGroundwaterContaminationWater treatment