This compilation includes over 20 standards that have been developed under the jurisdiction of ASTM Committee E50 on Environmental Assessment. These standards are from the following subcommittees in Committee E50: E50.01 on Storage Tanks; E50.02 on Commercial Real Estate Transactions; E50.03 on Environmental Risk Management/Sustainable Development/Pollution Prevention; E50.04 on Performance Standards Related to Environmental Programs; E50.05 on Wetland Ecosystems. The scope of Committee E50 is: The promotion of knowledge, stimulation of research, and development of standard guides, specifications, practices, test methods, classifications, and definitions relating to environmental assessment. The scope of the committee includes, but is not limited to, commercial real estate transactions, storage tanks, and pollution prevention. One objective of the Committee is to establish good commercial practices that satisfy the due diligence responsibilities of landowners.