The awarding of a Section 28 TSCA grant by the U.S. Environmental Protection Agency to the Maryland Department of Health and Mental Hygiene's Office of Environmental Programs through its Science and Health Advisory Group, provided funding for the production of several documents dealing with Containment Assurance and Integrity of Storage Tanks Containing Toxic Materials. The successful production of these materials, together with their introduction to users and the tank manufacturing industry at two management seminars, has provided the State of Maryland and other states that will use them, with the necessary information and sources of information for developing and operating effective storage tank safety programs. This Final Report to EPA summarizes the work done under the grant.