Hazardous Materials: EPA May Need to Reassess Sites Receiving Asbestos-Contaminated Ore from Libby, Montana, and Should Improve Its Public Notification Process

摘要

Between 1923 and the early 1990s, a mine near Libby, Montana, shipped millions of tons of asbestos-contaminated vermiculite ore to sites throughout the United States. In 2000, the Environmental Protection Agency (EPA) began to clean up asbestos contamination at the Libby mine and evaluate those sites that received the ore to determine if they were contaminated. Under Superfund program regulations and guidance, EPA regional offices took steps to inform affected communities of contamination problems and agency efforts to address them. GAO was asked to (1) describe the status of EPA's and other federal agencies' efforts to assess and address potential risks at the facilities that received contaminated Libby ore and (2) determine the extent and effectiveness of EPA's public notification efforts about cleanups at sites that received Libby ore. GAO, among other steps, convened focus groups in three of the affected communities to address these issues. Since 2000, EPA has evaluated 271 sites thought to have received asbestos-contaminated ore from Libby, Montana, but did so without key information on safe exposure levels for asbestos. Based on these evaluations, 19 sites were found to be contaminated with asbestos from the Libby ore and needed to be cleaned up. EPA or the state of jurisdiction generally led or oversaw the cleanups.