Committee F20 on Hazardous Substances and Oil Spill Response was formed in 1975. F20 meets twice a year, usually in February and October, with about 25 members meeting of two days of meetings, to develop and update documents relevant to hazardous substances and oil spill response. The Committee, with a current membership of 55, has jurisdiction of over 64 standards, published in the Annual Book of ASTM Standards, Volume 11.08. Committee F20 has 9 technical subcommittees that maintain jurisdiction over these standards. Information on this subcommittee structure and F20's portfolio of approved standards and work items under construction are available from the List of Subcommittees, Standards and Work Items below.