9 Va. Admin. Code § 25-900-9999
Virginia's Forestry Best Management Practices for Water Quality Technical Manual, Fifth Edition 2011, Department of Forestry. Available at http://www.dof.virginia.gov/infopubs/BMP-Technical-Guide_pub.pdf.
Field Office Technical Guide, Natural Resources Conservation Service, United States Department of Agriculture, Washington, D.C. (Web-based document available at the following internet address: https://efotg.sc.egov.usda.gov/#/details)