Aboveground Oil Storage Tanks: Observations on EPA's Economic Analyses of Amendments to the Spill Prevention, Control, and Countermeasure Rule

摘要

Oil in aboveground tanks can leak into soil and nearby water, threatening human health and wildlife. To prevent certain oil spills, the Environmental Protection Agency (EPA) issued the Spill Prevention, Control, and Countermeasure (SPCC) rule in 1973. EPA estimated that, in 2005, about 571,000 facilities were regulated under this rule. When finalizing amendments to the rule in 2002 and 2006 to both strengthen the rule and reduce industry burden, EPA analyzed the amendments' potential impacts and concluded that the amendments were economically justified. As requested, GAO assessed the reasonableness of EPA's economic analyses of the 2002 and 2006 SPCC amendments, using Office of Management and Budget (OMB) guidelines for federal agencies in determining regulatory impacts, among other criteria, and discussed EPA's analyses with EPA officials. GAO recommends that EPA improve its analysis of future changes to the SPCC rule by more closely following OMB guidance. In commenting on a draft of this report, EPA generally agreed with this recommendation and stated that, consistent with it, the agency will continue gathering data to improve its understanding of the regulated universe and oil spill risks and to address uncertainty and quantify benefits.