The report was submitted by EPA to Congress under Section 301(a)(2)(ii) of CERCLA. The report assesses the need for and adequacy of the revenue raised by the Post-Closure Liability Trust Fund (PCLTF) in relation to its estimated future requirements. In preparing the report, EPA used a computer simulation model to estimate the range of potential revenues, expenditures and annual balance of the PCLTF. The report contains an Executive Summary and five chapters on the following topics: Introduction; background on RCRA, CERCLA, and the PCLTF; a description of the computer model; approaches to assessing PCLTF adequacy; results of the computer simulations; and revenue analysis. More detailed descriptions of the computer model and the simulation results are contained in three volumes of appendices. The report itself does not include any legislative recommendations. However, the transmittal memorandum accompanying the report outlines the Administration's recommendations.