To identify the number of facilities NNSA has identified to transfer to EM and their condition, we reviewed DOE and NNSA policies, guidance documents, and data related to the management of facilities. Specifically, we reviewed NNSA's 25-year site plans, which identify each site's plans for the disposition of contaminated facilities they manage and generally plan for the years 2013 through 2037. We also analyzed data NNSA uses to track the condition of its facilities and their associated surveillance and maintenance costs. Specifically, we used NNSA's data to identify contaminated nonoperational facilities, operational facilities that will be considered nonoperational over the next 25 years, and the annual cost to maintain these facilities. NNSA collects these data from its sites biannually and combines them into one database. To assess the reliability of the data elements needed to answer our objectives, we reviewed NNSA's processes for verifying these data and related documents and interviewed agency officials knowledgeable about the data. We also corroborated the data obtained from NNSA headquarters with data we collected from the six NNSA sites that manage these facilities. On the basis of these steps, we determined that the data were sufficiently reliable for our purposes. We also reviewed planning and policy documents that NNSA uses to identify and manage facilities before they are transferred to EM. In addition, we visited two of the six NNSA sites with contaminated facilities--Lawrence Livermore National Laboratory (LLNL) in California and the Y-12 National Security Complex (Y-12) in Tennessee--to view contaminated facilities and interview officials that are familiar with facility surveillance and maintenance. We selected these two sites because NNSA identified them as having some of the most contaminated facilities and because these sites have both operational and nonoperational facilities; because this is a nonprobability sample, our observations at these sites cannot be generalized to all NNSA sites but provide illustrative examples of sites with contaminated operational and nonoperational facilities. We also interviewed officials in NNSA's Office of Infrastructure and Capital Planning, which is responsible for collecting the facility data from the sites, as well as the Office of Field Financial Management. To determine the extent to which EM considers the risks of NNSA's contaminated nonoperational facilities and the costs to maintain them, we reviewed DOE and EM policies and guidance documents related to the facility transfer process and prioritization of EM's cleanup work. Specifically, we reviewed DOE's Transition Implementation Guide and EM's Standard Operating Policies and Procedures for Excess Facility Transfer to the Office of Environmental Management, among others. We also interviewed officials at EM's Office of Deactivation and Decommissioning and Facility Engineering, which developed EM's transfer process. To identify if and how a facility's risk was factored into the transfer process, we reviewed NNSA memorandums that identify risks associated with its contaminated facilities and those outlining transfer decisions between EM and NNSA. To learn how EM prioritizes cleanup work and funding, we interviewed officials from EM's Program Planning and Budget Office. We also interviewed officials at EM's site offices for Y- 12 and LANL because those sites have some of the oldest and most contaminated facilities, according to NNSA documents. Additionally, we interviewed EM officials to compare EM's actions to assess and prioritize risks with federal standards for internal control. We conducted this performance audit from December 2013 to March 2015 in accordance with generally accepted government auditing standards. Those standards require that we plan and perform the audit to obtain sufficient, appropriate evidence to provide a reasonable basis for our findings and conclusions based on our audit objectives. We believe that the evidence obtained provides a reasonable basis for our findings and conclusions based on our audit objectives. NNSA is one of the largest organizations in DOE, overseeing nuclear weapons, nuclear nonproliferation, and naval reactor missions at eight sites across the United States. NNSA is responsible for providing the United States with safe, secure, and reliable nuclear weapons in the absence of underground nuclear testing and maintaining core competencies in nuclear weapons science, technology, and engineering. Operating with a budget of $11.2 billion in fiscal year 2014, work activities to support NNSA's national security missions are largely carried out by management and operating contractors; an arrangement with historical roots. Since the Manhattan Project produced the first atomic bomb during World War II, NNSA and its predecessor agencies have depended on the expertise of private firms, universities, and others to carry out research and development work and efficiently operate the facilities necessary for the nation's nuclear defense. Ensuring a safe and reliable nuclear weapons stockpile is an extraordinarily complicated task and requires state-of-the-art experimental and computing facilities, as well as the skills of top scientists in the field. The life cycle of an NNSA facility includes several phases, including planning and acquisition, maintenance, operation, and disposal. According to DOE's policy on asset management, a program office, such as NNSA, must notify DOE's Office of Acquisition and Project Management when it determines that a facility is not fully utilized or is not needed for the mission of the program office. DOE then determines whether the facility could be used by another program office. If the facility is not accepted for use by another program office, DOE determines it to be excess. At this point, if the facility is contaminated with chemicals and/or radiological materials as a consequence of nuclear weapons production and/or nuclear energy research, the facility becomes eligible for potential transfer to EM for decontamination and decommissioning. EM established a multistep transfer process in 2011 for NNSA and other DOE program offices to transfer their contaminated facilities to EM for decontamination and decommissioning. EM's transfer process consists of nine steps beginning with NNSA or another program office nominating a facility for transfer. Once nominated, EM reviews the facility to confirm that it meets EM's eligibility requirements for transfer--the facility must be considered excess to all DOE mission needs, not just to the program office; contaminated with chemical or radiological contaminants resulting from nuclear weapons research and/or production, not contamination resulting solely from construction material, such as asbestos; and an individual, self-contained facility, and not part of a larger complex. After EM confirms a facility is eligible for transfer, EM evaluates it in more detail and, if necessary, the program office performs necessary stabilization activities, such as structural repairs and any other identified actions to ensure the facility is in stable condition prior to transfer to EM (see fig. 1). When EM confirms a facility is eligible for transfer, however, the facility is not transferred to EM until it has funding available to immediately begin decontamination and decommissioning. EM adopted this funding- dependent disposition policy, as a practice, in 2007 and formalized it as part of its transfer policy in 2011. Prior to 2001, EM had been given responsibility for hundreds of excess facilities from other DOE program offices without any additional resources to manage them, according to EM officials. Until EM has funds available to immediately begin disposition, program offices, such as NNSA, are responsible for maintaining their nonoperational facilities through activities known as surveillance and maintenance. Surveillance and maintenance activities may include, for example, periodic inspections of structures, as well as preventive, predictive, and corrective maintenance. These activities may also include the maintenance of selected systems and equipment essential for transition and disposition activities, such as maintaining ventilation systems, to ensure, at a minimum, that any contamination is adequately contained and that the potential hazards to workers, the public, and the environment are eliminated or mitigated and controlled. Cleanup work at DOE's sites is governed by one or more regulatory agreements or orders that establish the scope of work to be performed at a given site and the dates by which specific cleanup milestones must be achieved. Cleanup work is performed at some sites under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA). CERCLA, commonly known as Superfund, provides federal authority to respond to releases or threatened releases of hazardous substances, pollutants, and contaminants that may endanger public health or the environment, and it established a trust fund to pay for cleanup activities. Portions of the cleanup work are also subject to the Resource Conservation and Recovery Act of 1976 (RCRA), which generally prohibits the treatment, storage, or disposal of hazardous waste without a permit. The Environmental Protection Agency (EPA) may authorize states to adopt and enforce their own hazardous waste management programs (including issuing permits) as long as the state programs are at least equivalent to and consistent with RCRA. In addition, the Federal Facilities Compliance Act of 1992 made federal facilities subject to state hazardous waste permitting and enforcement authorities. Under these authorities, EM has entered into Federal Facility Agreements with EPA and state regulatory agencies that establish cleanup deadlines and milestones, as well as reporting and other requirements. NNSA has identified 83 contaminated facilities for potential transfer to EM for disposition over a 25-year period, 56 of which are currently nonoperational. NNSA is maintaining these facilities for future transfer to EM, but the condition of nonoperational facilities continues to degrade, resulting in increasing costs to NNSA to maintain them to prevent the spread of contamination. According to NNSA facility data, NNSA has identified 83 contaminated facilities at six of its eight sites for potential transfer to EM for disposition over 25 years, 27 of which are operational, and 56 are nonoperational (see fig. 2). NNSA identified these facilities as part of each site's process for planning for the disposition of contaminated facilities it manages over a 25-year period; most sites completed their planning process in 2013. Of the 27 contaminated facilities currently in operation, NNSA expects 9 (33 percent) will be ready for disposition within the next 10 years. Most of the 27 operational facilities have been in operation for decades--19 of them (70 percent) were constructed more than 50 years ago. Appendix I lists the 83 facilities that NNSA has identified for potential transfer to EM over 25 years. According to NNSA facility data, the 56 nonoperational contaminated facilities total over 1.5 million gross square feet of space. These facilities range in size, use, and age. For example, one of NNSA's smallest contaminated nonoperational facilities is a 1,694 gross square foot building that once served as a cryogenic lab located at Nevada National Security Site. NNSA's largest contaminated nonoperational facility, located at Y-12, is over 613,000 gross square feet and was built to enrich uranium for the Manhattan Project. Forty-five of NNSA's 56 contaminated nonoperational facilities (about 80 percent) were constructed 50 years ago and, in some cases, have been nonoperational for decades. For example, the Livermore Pool Type Reactor at LLNL, which was used for nuclear weapons research and radiation studies, among other things, has been nonoperational since 1980. NNSA first nominated some of the 56 nonoperational facilities for disposition in December 2008, after EM updated its process to transfer contaminated facilities and requested NNSA and DOE's Offices of Science and Nuclear Energy to nominate facilities for transfer to EM. In 2008, NNSA nominated 39 nonoperational facilities from five sites for transfer to EM, and EM agreed to accept 14 when it received funding to begin decontamination and decommissioning, although none have completed the transfer process and are part of the 56 nonoperational facilities still maintained by NNSA. In 2009 when EM confirmed 14 of the facilities for future transfer, it did not consider facilities that were nominated at Y-12 because of their inclusion in a separate cleanup project (see table 1). EM officials stated that, while EM confirmed in 2009 that 14 NNSA facilities were eligible for transfer to EM, none of those facilities have been transferred and remain part of the 56 nonoperational facilities managed by NNSA. According to officials in NNSA's Office of Infrastructure & Capital Planning, EM's Office of Deactivation and Decommissioning and Facility Engineering, and EM's Office of Program Planning and Budget, EM has not accepted the facilities because funding is not available for EM to immediately begin cleanup activities. EM officials told us that the program initially expected to have funds available to accept and begin disposition of several of the 14 facilities in fiscal year 2017, but not enough funds are expected to be available at that time due to competing priorities for cleanup work. As a result, EM officials told us they estimate that EM may not be able to accept any facilities for transfer until at least 2030 due to budget uncertainties. Until funds are available to decontaminate and decommission facilities from the other program offices, including NNSA, EM plans to focus its disposition resources on the excess facilities it is currently responsible for, and NNSA remains responsible for maintaining its contaminated facilities until they are transferred to EM. The condition of some of NNSA's contaminated nonoperational facilities continues to worsen, resulting in increased costs to maintain them. During the last phases of a facility's life cycle, according to DOE's policies, an agency is to ensure that surveillance and maintenance are adequate to maintain the facility in stable and known conditions until it is transferred to EM for disposition. Yet, NNSA documents show that several nonoperational facilities will require more than the current level of surveillance and maintenance as they continue to degrade and pose new risks to workers and the environment. At a facility known as Alpha-5 at Y-12, conditions have significantly degraded since the last major maintenance activities 4 years ago, causing maintenance costs to increase substantially. According to a 2014 internal NNSA document examining risks posed by nonoperational facilities, multiple concrete ceiling panels are collapsing at Alpha-5, which pose risks for workers who conduct the surveillance and maintenance activities on the facility. The most dangerous of these failing panels have been reinforced from within the facility to prevent complete collapse, and temporary patches have been applied to the roof immediately above these panels. Furthermore, even though DOE obligated over $100 million in American Recovery and Reinvestment Act funds to remove asbestos floor tiles and other contaminated material and equipment from Alpha-5, with the hope of reducing the facility's risk and maintenance costs, the condition of Alpha-5 has continued to degrade. Specifically, site officials now detect radiological and toxicological contaminants-- beryllium, mercury, and black mold--in areas where they were not detected 2 years earlier (see fig. 3). The degrading condition at Alpha-5 not only increased the risk, surveillance and maintenance costs increased from an annual average of about $1.2 million from 2009 to 2011 to an average of almost $4 million annually in 2012 and 2013. Additional repair activities were planned in fiscal year 2014, but even with these additional repairs, according to NNSA documents, the overall risk of the facility to workers and the environment will not be significantly reduced. Site: Y-12 National Security Complex Gross square feet: 613,642 Year deactivated: 2000 Annual anticipated surveillance and expenditures: $3,394,000 Total estimated disposition cost: $345,488,000 Commissioned in 1944, Alpha-5 performed uranium enrichment for the Manhattan Project and later played a central role during the Cold War. Contaminants, including mercury, beryllium, and black mold, now cover 75 to 80 percent of the facility. The facility is located adjacent to active facilities and approximately a third of a mile from a residential neighborhood. Since the facility was deactivated, the roof has experienced substantial degradation, and water has entered and damaged the facility. Entrance into most areas of the facility requires personal protective equipment, including a full-face respirator. For fiscal year 2015, site officials estimated they need $15 million to replace the failing roof at the facility. Despite temporary patches and repairs, the roof has continued to degrade, and water continues to enter the facility, resulting in flooding and the spread of radiological and toxicological contamination within the facility. Alpha-5 also has a leaking steam system, which accelerates mold growth and the spread of contamination. Roadways and sidewalks immediately outside the facility are regularly used by site workers, according to NNSA information on the facility. They could be injured or exposed to contamination by falling concrete, ceiling panels, and roofing materials from the facility. Site: Lawrence Livermore National Laboratory (LLNL) Gross square feet: 31,809 Year deactivated: 1995 Annual anticipated surveillance and expenditures: $607,044 Total estimated disposition cost: $62,000,000 Commissioned in 1956, the Heavy Elements Facility performed research activities associated with underground nuclear testing and on the behavior of heavy elements. The facility is located half a mile from a residential neighborhood. According to a National Nuclear Security Administration (NNSA) document about the facility's risks, significant radiological and chemical contamination is present throughout the facility, including in the walls, floors, air filtration systems, and ducting. Beryllium contamination may be present in some localized areas as well. The facility's roof has failed and is leaking over contaminated areas. Radiological contaminants have migrated, and there are areas of the facility that are inaccessible because of contamination. In 2003, the site spent about $22,000,000 to remove materials and equipment from the facility and reduce hazards, but contamination remains dispersed throughout the facility and its systems. NNSA now estimates that mitigating the risks associated with the facility's failing roof and air filtration systems will cost at least $1,000,000. NNSA data show that the agency spent almost $34 million maintaining the 27 facilities still in operation that will become nonoperational within the next 25 years and over $10 million in fiscal year 2013 on surveillance and maintenance activities for the 56 nonoperational facilities (see table 2). Site officials at both Y-12 and LLNL told us that nonoperational facilities continue to degrade because of limited surveillance and maintenance resources. Officials at Y-12 said that balancing the needs of operational facilities with the need to prevent the spread of contamination at nonoperational facilities is a challenge with limited resources because both types of facilities require maintenance to protect workers and the environment. When developing its annual plans and schedules for decontaminating and decommissioning facilities, EM does not consider the human health and environmental risks of NNSA's contaminated nonoperational facilities that are eligible for transfer, but have not yet been transferred to EM. Furthermore, when establishing its cleanup priorities, EM does not take into account the costs of deferring disposition of NNSA's contaminated nonoperational facilities. EM considers the risks to human health and the environment of the facilities it is responsible for when prioritizing them for decontamination and decommissioning, but it does not consider the risks posed by facilities it has not yet accepted from NNSA. Consequently, nonoperational facilities maintained by NNSA that meet EM's transfer requirements may continue to degrade while lower-risk facilities already under EM's responsibility are decontaminated and decommissioned. EM prioritizes its facilities for decontamination and decommissioning each year as part of its process for preparing its submission to DOE's annual budget justification. Under this process, EM asks each site to create a prioritized list of facilities for disposition and other cleanup activities for the forthcoming fiscal year. When developing such lists, officials at EM's sites consider facilities currently under EM's responsibility. These site- level lists prioritize cleanup activities based on a number of site-specific factors, including regulatory commitments, footprint reduction goals, agreements with EPA and states, and risks to worker safety and the environment. However, EM does not include in its prioritized lists contaminated nonoperational facilities maintained by NNSA that meet EM's transfer requirements. In some cases, NNSA's contaminated nonoperational facilities may pose greater human health and environmental risks than facilities EM plans to decontaminate and decommission. For example, in 2014 EM completed the decommissioning of two uncontaminated water towers at LANL at a cost of $575,667, which contributes to the site's goal of reducing the amount of land and facilities used by the site and, according to site officials, to prepare the land to be transferred to the county. According to one EM official at LANL, these water towers posed very little risk to human health and the environment. In contrast, NNSA's Ion Beam Facility at LANL, a contaminated nonoperational facility that has been awaiting transfer to EM for 20 years, poses human health and environmental risks, according to NNSA documents and officials. Site: Los Alamos National Laboratory (LANL) Gross square feet: 56,259 Year deactivated: 1999 (vacated in 1994) Annual anticipated surveillance and expenditures: $169,000 Total estimated disposition cost: $14,000,000 Commissioned in 1953, the Ion Beam Facility supported post-World War II scientific research, including nuclear physics experiments. Large sections of the facility are contaminated with radiological or chemical materials, including tritium and possibly mercury. According to a National Nuclear Security Administration (NNSA) document describing the facility's risks, the facility is located adjacent to the most populated area of the site, and less than a quarter mile from an active mission facility. The facility is also in close proximity to a wooded canyon and, if a wildfire spread to the facility, according to the NNSA documents, it could result in the uncontrolled release of contamination and force an evacuation of LANL's main technical area. Tritium contamination at the facility cannot be addressed until disposition occurs due to the nature of the contamination. In the meantime, maintaining the integrity of the building is critical to prevent water infiltration and the spread of contamination, but roof maintenance is challenging because of the facility's height. In the mid-2000s, NNSA invested over $2 million to mitigate hazards associated with contaminated systems at the Ion Beam Facility, but the facility continues to degrade. Before 2019, according to NNSA information, the facility will require more than the current level of surveillance and maintenance to protect workers, the public, and the environment. According to the 2006 DOE Deputy Secretary Program Decision Memorandum, EM is to incorporate DOE's contaminated nonoperational facilities into its planning for decontamination and decommissioning, commensurate with the risk such activities pose. Additionally, federal standards for internal control state that, in conducting risk assessments, management needs to comprehensively identify risks and should consider all significant interactions between the entity and other parties, as well as internal and external factors at both the entitywide and activity levels. EM officials told us that EM does not include contaminated nonoperational facilities maintained by NNSA and other program offices in its planning until EM officials believe they will have available funding to begin decontamination and decommissioning. At that time, they will consider which facilities to fund. However, without developing a prioritized, risk-based list of facilities for disposition that includes facilities from NNSA, it is unclear whether EM's planning is consistent with the 2006 memorandum, and EM may not be providing Congress with the most complete information on its cleanup needs and priorities in its annual budget submissions. Such planning would also help inform EM's annual budget submission. EM's process for prioritizing facilities for cleanup does not take into account the costs associated with deferring the disposition of NNSA's nonoperational facilities. A 2010 EM study considered the cost of deferring decontamination and decommissioning several facilities and found that hundreds of millions of dollars could be saved if EM disposed of the facilities earlier than planned, but no analysis has been done for facilities already accepted by EM or nonoperational facilities at NNSA. Specifically, EM conducted a life cycle cost analysis in 2010 to determine if costs would be saved by disposing of contaminated facilities at five DOE Office of Science sites earlier than it had originally planned. Based on that analysis, EM concluded that, if disposition work began in 2010 rather than 2017 as it had originally planned, the early cleanup would result in life cycle savings of about $734 million, primarily by avoiding future surveillance and maintenance costs. According to one senior official from EM's Office of Deactivation and Decommissioning and Facility Engineering, EM did not begin disposition of these facilities after EM performed the life cycle cost analysis because EM did not request funds to accelerate the cleanup. Although EM has not performed such analyses for NNSA's nonoperational facilities that meet EM's transfer requirements, one senior official from EM's Office of Deactivation and Decommissioning and Facility Engineering told us that such an analysis may show that hundreds of millions of dollars could be saved by avoiding future surveillance and maintenance costs and increased disposition costs. Conditions at many of NNSA's contaminated facilities, some of which have been nonoperational for many years, continue to worsen, resulting in increased costs and risks, which are not considered by EM when prioritizing its cleanup work. As previously discussed, facility life cycle costs--including surveillance and maintenance and disposition costs-- and risks to human health and the environment continue to increase as facilities degrade. For example, site officials estimate that about $2.6 million in repairs and structural upgrades will be needed for two nonoperational contaminated facilities at LLNL prior to 2019--11 years before EM officials estimate they may be able to accept any facilities from NNSA for disposition, as shown in the following examples: The MARS E-Beam Facility: This facility will require an estimated $700,000 to temporarily extend the life of its roof for 5 to 8 years and remove air filtration systems that could release contaminants. The facility stopped operating in 1999 and has a structurally failing roof above contaminated areas that has resulted in water intrusion, which NNSA documents state could spread contamination. The Rotating Target Neutron Source Facility: This facility stopped operating in 1987 and will need an estimated $1.9 million to mitigate the risks of a failing roof above highly contaminated areas, which has resulted in water intrusion that could spread tritium contamination. A 2011 EM report found that the longer facilities sit idle, the further they degrade, and the more dangerous and costly they are to maintain or dispose of. The report also stated that some older facilities have a limited life before major investments and structural upgrades must be considered to maintain the ability to safely enter them for cleanup activities. According to the GAO Cost Estimating and Assessment Guide, which is a compilation of cost-estimating best practices drawn from across industry and government, agencies should consider all life cycle costs, risks, and trade-offs to support the best decisions for allocating existing and future resources. Nevertheless, EM does not consider the remaining life cycle costs of NNSA's contaminated nonoperational facilities, such as NNSA's costs for surveillance and maintenance and structural upgrades, in developing its lists of cleanup priorities, according to EM officials. Officials from EM's Office of Deactivation and Decommissioning and Facility Engineering told us that, in their view, EM does not need to evaluate the surveillance and maintenance costs of facilities for which it is not responsible. EM documents have identified several benefits of early disposition that could be realized if life cycle costs are considered in the cleanup prioritization process. In 2005, EM finished a $6.5 billion, 10-year accelerated cleanup of the Rocky Flats Site located 16 miles northwest of Denver, Colorado, even though DOE had estimated in 1995 that the cleanup and disposition activities at Rocky Flats would require $27 billion over 65 years. Disposition activities at Rocky Flats required the decontamination and decommissioning of 800 nonoperational facilities, including structures contaminated with radiological and chemical materials. We reported in July 2006 that the accelerated schedule was one of four factors that contributed to the early completion of Rocky Flats' cleanup. In a 2009 report to Congress, EM estimated that its early disposition and cleanup of Rocky Flats resulted in $20.5 billion in life cycle cost savings, including savings on future surveillance and maintenance costs, and 50 years in schedule savings. Site: Y-12 National Security Complex Gross square feet: 313,771 Year deactivated: 2007 Annual anticipated surveillance and expenditures: $1,735,000 Total estimated disposition cost: $194,357,000 Commissioned in 1945, Beta-4 originally performed uranium enrichment during World War II, but transitioned to lithium enrichment and weapons fabrication support during the Cold War. The facility is contaminated with radiological and other hazardous materials including uranium alloys, asbestos, lead, and mercury. Beta-4 is located adjacent to active facilities and is approximately a third of a mile from a residential neighborhood. The facility is degrading and, according to site officials, structural failures could result in releases of radiological and chemical contamination in the event of a fire. According to National Nuclear Security Administration documents, areas of the facility's roof leak and windows are loosening from their casements. Water intrusion due to the deteriorating roof could result in the spread of contamination. Further, according to the documents, if a fire occurred, workers could be exposed to chemical and radiological materials, and water runoff from fire suppression activities could contain contaminants. The facility also obstructs access to soil suspected to require remediation. EM's accelerated cleanup of the Fernald Site in Harrison, Ohio, produced similar results. EM's cleanup of Fernald included the decontamination and decommissioning of over 178 facilities. By pursuing closure and disposition of the Fernald Site earlier than planned, cleanup was completed 23 years early and for $200 million less than EM originally estimated. In 2008, EM considered the costs of deferring cleanup at a facility within the Savannah River Site in South Carolina. In considering such costs, EM chose to decontaminate and decommission Building 711-L, a facility with a collapsing roof, earlier than it had originally planned, which allowed the program office to avoid spending operating funds repairing and maintaining a deteriorating nonoperational facility that would later be demolished. By weighing the full life cycle costs and deciding to perform accelerated disposition, EM documents show that there are other benefits beyond cost savings of avoiding future surveillance and maintenance costs, including: reducing disposition costs by avoiding future repairs, reducing environmental and safety risks from highly contaminated and degraded facilities, and making areas of land and infrastructure available to support agency missions and reduce sites' footprints. EM faces an enormous task in the disposition of the nation's contaminated facilities that were used to develop and produce nuclear weapons, many of which still contain radioactive and other hazardous substances. Assessing all of the nonoperational contaminated facilities across NNSA's sites, prioritizing them for decontamination and decommissioning, as well as conducting cleanup activities is a complicated undertaking for EM. However, EM is not comprehensively integrating risks posed by NNSA's nonoperational contaminated facilities, as called for by the 2006 Deputy Secretary Program Decision Memorandum and federal internal control standards. By not integrating nonoperational facilities from NNSA with its own lists of cleanup priorities, EM is not including all risks from NNSA in its planning and may be putting lower-risk facilities under its responsibility ahead of deteriorating facilities managed by NNSA that are of greater risk to human health and the environment. Without developing such a prioritized, risk-based list, EM is not providing Congress with complete information about EM's current and future cleanup obligations as Congress deliberates annually about appropriating funds for cleanup activities. As EM has previously demonstrated in its analysis of the costs of deferring facility disposition and by cleaning up the Rocky Flats and Fernald sites earlier than planned, analyzing life cycle costs of nonoperational facilities shows that accelerating cleanup of some facilities, while others are maintained in their current states, could offer significant cost savings. EM does not currently analyze and consider life cycle costs for facilities it does not manage because it does not accept facilities for transfer until funding is available to carry out the decontamination and decommissioning work. However, because EM is not considering the full life cycle costs of such facilities, EM cannot ensure that its plans for decontaminating and decommissioning facilities result in the most cost-effective use of its limited resources. Once EM has a full understanding of the costs of deferring disposition, it can better communicate its cleanup priorities to Congress. We recommend the Secretary of Energy direct the Office of Environmental Management (EM) to take the following two actions to aid EM in its decision making on which facilities to accept and decontaminate and decommission: To ensure that EM's annual process to prioritize facilities for decontamination and decommissioning considers all relevant risks from NNSA, EM should integrate its lists of facilities prioritized for disposition with all NNSA facilities that meet EM's transfer requirements, and EM should include this integrated list as part of the Congressional Budget Justification for DOE. To better inform its prioritization of facilities for cleanup and identify opportunities for cost savings, EM should analyze remaining life cycle costs of all nonoperational NNSA facilities that meet its transfer requirements and incorporate the information into its prioritization process. We provided a draft of this report to DOE for review and comment. Responding on behalf of DOE, EM provided written comments in a letter dated March 4, 2015, which are summarized below and reprinted in appendix II. In its written comments, DOE stated that it concurred with the issues identified in our report and described actions it plans to implement to address them. DOE, however, did not state whether it concurred with the report's recommendations. Specifically, DOE, in response to a DOE Office of Inspector General report, is establishing a working group on excess contaminated facilities with representation from DOE's major program offices, including NNSA and EM, and states that the efforts of the working group will address the substantive issues identified by both reports. We have not examined the mission or operation of the working group, and although DOE states that the efforts of the working group will address our recommendations, it is not clear from DOE's written comments whether the working group will do so. We continue to believe that implementing our recommendations will help to provide Congress with complete information about EM's current and future facility disposition obligations, the relative risks they pose, and ensure that EM's plans for decontaminating and decommissioning facilities result in the most cost- effective use of its limited resources. Additionally, in its written comments, DOE stated that the 2006 DOE Deputy Secretary Program Decision Memorandum referenced in our report provided guidance for fiscal years 2008-2012, and therefore is not currently operative. We added text to our report describing its effective dates, but this memorandum's expiration does not affect our finding that EM does not incorporate NNSA's contaminated nonoperational facilities into its planning for decontamination and decommissioning. Notwithstanding its expiration, senior officials in EM's Office of Deactivation and Decommissioning and Facility Engineering and officials in NNSA's Office of Infrastructure and Capital Planning told us that they treat this memorandum as current and applicable guidance and it is still serving as the basis for current facility transfer decisions. DOE also provided technical comments that we incorporated as appropriate. We are sending copies of this report to the appropriate congressional committees, the Secretary of Energy, and other interested parties. In addition, the report is available at no charge on the GAO website at http://www.gao.gov. If you or your staff members have any questions about this report, please contact me at (202) 512-3841 or trimbled@gao.gov. Contact points for our Offices of Congressional Relations and Public Affairs may be found on the last page of this report. GAO staff who made key contributions to this report are listed in appendix III. Dev. labs & offices Dev. labs. & offices Dev. labs. & offices Production (Alpha-5) Production (Beta-4) Production (Alpha-1) Production (Beta-2e) In addition to the individual named above, Nathan Anderson, Assistant Director; Wyatt R. Hundrup; Emily C. Pinto; and Cody J. Raysinger made key contributions to this report. Richard Burkard, R. Scott Fletcher, Cindy Gilbert, Paul Kinney, Alison D. O'Neill, Karen Richey, Jack Wang, and Jessica Wintfeld also made important contributions.

Summary:
Seventy years of nuclear weapons production and energy research by DOE and its predecessor agencies generated radioactive waste, resulting in thousands of contaminated facilities. Some facilities pose risks to workers near the facilities and to the environment. NNSA, a separately organized agency within DOE, now manages many of these contaminated facilities, and though many are no longer in use, others are still operational. Once NNSA considers these facilities to be nonoperational, they may be eligible for transfer to EM, whose mission includes disposing of contaminated facilities through decontamination and decommissioning. In 2007, EM updated its facility transfer process, but until EM accepts these facilities, NNSA is responsible for their maintenance. The Senate Armed Services Committee Report accompanying the National Defense Authorization Act for Fiscal Year 2014 mandated GAO to assess the inventory of facilities that NNSA plans to transfer to EM for disposition. This report examines (1) how many facilities NNSA has identified for transfer to EM for disposition and their condition and (2) the extent to which EM considers risks of NNSA's contaminated nonoperational facilities and the costs to maintain them when prioritizing its cleanup activities. GAO reviewed documents and interviewed officials from NNSA and EM and visited two NNSA sites that have some of the most contaminated facilities. The National Nuclear Security Administration (NNSA) has identified 83 facilities at six of its eight sites for transfer to the Department of Energy's (DOE) Office of Environmental Management (EM) for disposition, and the condition of NNSA's facilities awaiting transfer continues to degrade. NNSA plans to transfer all 83 facilities to EM over the next 25 years. Twenty-seven of them are still operational but are expected to become nonoperational in the next 25 years, and 56 are nonoperational now. In 2009, EM agreed to accept 14 NNSA facilities when it had funds available to begin decontamination and decommissioning. Six years later, none of these facilities have been transferred, and EM officials said they may not be able to accept these or other NNSA facilities until at least 2030 due to budget uncertainties and other priorities. Meanwhile, as NNSA maintains contaminated nonoperational facilities, the facilities' condition continues to worsen, resulting in increased costs to maintain them, and NNSA documents show that some facilities will require significant additional maintenance to prevent the spread of contamination. For example, the Alpha-5 facility at NNSA's Y-12 National Security Complex in Tennessee has degraded to the extent that site officials now detect contaminants, such as mercury, in areas where they were not detected 2 years earlier, and additional funds are needed to repair its failing roof. EM does not consider the risks of NNSA's nonoperational facilities when prioritizing its cleanup activities. Specifically, when developing its annual facility disposition plans, EM does not consider the human health or environmental risks of NNSA's contaminated nonoperational facilities that meet its transfer requirements but have not yet been transferred. A 2006 DOE Deputy Secretary Program Decision Memorandum stated that EM is to incorporate DOE's contaminated nonoperational facilities into its planning for decontamination and decommissioning, commensurate with the risk such activities pose. EM officials told GAO that they do not include facilities maintained by NNSA in their planning until they have available funding to begin cleanup work. However, without integrating NNSA's inventory of nonoperational facilities into its process for prioritizing facilities for disposition, EM may be prioritizing cleanup for lower-risk facilities under its management ahead of facilities at NNSA that may present a higher risk of spreading contamination. Alpha-5, a Nonoperational Facility, Shows Degradation Over 2 Years GAO recommends, among other things, that EM integrate into one prioritized list all NNSA facilities that meet EM's transfer requirements. EM neither agreed nor disagreed with the recommendation, stating it has formed a working group that may address GAO's findings.