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<br />X11 <br />American Association of State Highway and Transportation Officials (AASHTO). 2004. <br />Standard specifications for transportation materials and methods of sampling. and <br />testing. 24th edition. <br />American Society for Testing and Materials (ASTM). 2005. Standard classification of <br />soils for engineering purposes. ASTM Standard D2487-00. <br />Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of <br />wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service <br />FWS/OBS-79/31. <br />Federal Register. July 13, 1994. Changes in hydric soils of the United States. <br />Federal Register. September 18, 2002. Hydric soils of the United States. <br />Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils <br />in the United States. <br />National. Research Council. 1995. Wetlands: Characteristics and boundaries. <br />Soil Survey Division Staff. 1993. Soil survey manual Soil Conservation Service. U.S. <br />Department of Agriculture Handbook 18. http://soils.usda.gov/ <br />Soil Survey Staff.1999. Soil taxonomy: A basic system of soil classification for making <br />and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, <br />U.S. Department of Agriculture Handbook 436. http://soils.usda.gov/ <br />Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of <br />Agriculture, Natural Resources Conservation Service. http://soils.usda.gov/ <br />Tiner, R.W., Jr. 1985. Wetlands of Delaware. U.S. Fish and Wildlife Service and <br />Delaware Department of Natural Resources and Environmental Control, Wetlands <br />Section. ' <br />United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of <br />Engineers wetlands delineation manual. Waterways Experiment Station Technical <br />Report Y-87-1. <br />United States Department of Agriculture, Natural Resources Conservation Service. <br />National forestry manual. http://soils.usda.gov/ <br />United States Department of Agriculture, Natural Resources Conservation Service. <br />National range and pasture handbook. http:!/www.glti.nres.usda.gov! <br />United States Department of Agriculture, Natural Resources Conservation Service. <br />National soil survey handbook, title 430-VI. http://soils.usda.gov/ <br />United States Department of Agriculture, Natural Resources Conservation Service. <br />2006. Land resource regions and major land resource areas of the United States, the <br />Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. / <br />http:Nsoils.usda.gov/ <br />36 <br />