An investigation of available data on the saturation state of seawater with respect to calcium carbonate and its possible significance for scale formation on Ocean Thermal Energy Conversion (OTEC) heat exchangers has been carried out. Pertinent oceanographic data is lacking at or near potential OTEC sites for the calculation of the degree of saturation of seawater with respect to calcium carbonate. Consequently, only ''extrapolated'' saturation values can be used. These indicate that near surface seawater is probably supersaturated, with respect to the calcium carbonate phases calcite and aragonite, at all potential OTEC sites. The deep seawater that would be brought to the surface at the potential Atlantic Ocean sites is also likely to be supersaturated with respect to calcium carbonate. The deep seawater at the potential Pacific Ocean sites may be slightly undersaturated. The fact that OTEC heat exchangers will be operating in seawater, which is supersaturated with respect to calcium carbonate, means that if nucleation of calcite or aragonite occurs on the heat exchanger surfaces, significant growth rates of calcium carbonate scale may be expected. The potential for calcium carbonate nucleation is highest at cathodic metal surface locations, which are produced as the result of aluminum corrosion in seawater. …

Efforts of this task indicate that powerplant productivity is a complex issue that has to take into account economic factors, equipment limitations, and system-loading characteristics as well as external constraints such as regulatory requirements. Among the specific findings are: (1) utilities in Illinois use the industry-wide measures of performance such as capacity factor, availability factor, forced outage rates etc.; equivalent availability as a measure is not in common practice; (2) several unit performance statistics are collected on a routine basis such as the daily unit status, component outage data, monthly production figures etc.; (3) identifying major causes of lost productivity appears to be a relatively simple task, but finding economically and technically acceptable corrective actions are generally more difficult; (4) selection of improvement projects, as well as evaluating their future impacts, is mostly based on operating experience and engineering judgement, with no use of formal analytical/statistical models; (5) there generally is a group in every utility - typically called the power production department - with routine responsibilities for upkeep of unit productivity; and (6) recently the Commonwealth Edison Co. has developed a procedure for utilizing the Edison Electric Institute outage data base for analyzing productivity-related questions at nuclear plants; this …

A letter report issued by the Government Accountability Office with an abstract that begins "Since 2007, the Department of Homeland Security's (DHS) Infrastructure Security Compliance Division (ISCD) has assigned about 3,500 high-risk chemical facilities to risk-based tiers under its Chemical Facility Anti-Terrorism Standards (CFATS) program, but it has not fully assessed its approach for doing so. The approach ISCD used to assess risk and make decisions to place facilities in final tiers does not consider all of the elements of consequence, threat, and vulnerability associated with a terrorist attack involving certain chemicals. For example, the risk assessment approach is based primarily on consequences arising from human casualties, but does not consider economic consequences, as called for by the National Infrastructure Protection Plan (NIPP) and the CFATS regulation, nor does it consider vulnerability, consistent with the NIPP. ISCD has begun to take some actions to examine how its risk assessment approach can be enhanced, including commissioning a panel of experts to assess the current approach, identify strengths and weaknesses, and recommend improvements. ISCD will need to incorporate the various results of these efforts to help them ensure that the revised risk assessment approach includes all elements of risk. After ISCD has …

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the importance of land acquisition to the success of the South Florida Ecosystem Restoration Initiative, focusing on: (1) what the South Florida Ecosystem Restoration Task Force did to identify and acquire lands needed to accomplish the goals of the initiative from 1996 through 1999; and (2) what the Department of the Interior did to help ensure that it maximized the acreage purchased--that is, bought as much land as possible, with $200 million in Farm Bill grants."

A letter report issued by the General Accounting Office with an abstract that begins "More small businesses are turning to subcontracting as a way to participate in the federal government's $250 billion procurement program. DOD, accounting for about two-thirds of federal procurements, has a critical role in providing opportunities to small businesses through subcontracting programs such as the Test Program for Negotiation of Comprehensive Small Business Subcontracting Plans (Test Program). In addition, Congress raised concerns about the potential for small businesses to lose opportunities to firms performing work outside of the United States. GAO was asked to review (1) DOD's assessment of the Test Program's effectiveness, (2) the performance of contractors participating in the Test Program, (3) the Defense Contract Management Agency's (DCMA) oversight of contractors' small business subcontracting efforts, and (4) the extent and reasons contractors are subcontracting with businesses performing outside the U.S."

A letter report issued by the Government Accountability Office with an abstract that begins "The Social Security Administration's (SSA) Disability Insurance and Supplemental Security Income programs provided around $128 billion to about 12.8 million persons with disabilities and their families in fiscal year 2005. Claimants who are denied benefits by SSA may appeal to federal courts. Through current initiatives, SSA is attempting to reduce the number of cases appealed to courts and remanded back to SSA for further review. In addition, there have been long-standing concerns about how SSA responds to court decisions that conflict with its policies. GAO was asked to examine: (1) trends over the past decade in the number of appeals reviewed by the courts and their decisions, (2) reasons for court remands and factors contributing to them, and (3) SSA's process for responding to court decisions that conflict with agency policy. GAO reviewed SSA data and documents on court decisions, remands and SSA's processes and interviewed agency officials and stakeholders on data trends, reasons for remands, and SSA processes."

A letter report issued by the Government Accountability Office with an abstract that begins "The Telephone Consumer Protection Act of 1991 prohibited invasive telemarketing practices, including the faxing of unsolicited advertisements, known as "junk faxes," to individual consumers and businesses. Junk faxes create costs for consumers (paper and toner) and disrupt their fax operations. The Junk Fax Prevention Act of 2005 clarified an established business relationship exemption, specified opt-out procedures for consumers, and requires the Federal Communications Commission (FCC)--the federal agency responsible for junk fax enforcement0--to report annually to Congress on junk fax complaints and enforcement. The law also required GAO to report to Congress on FCC's enforcement of the junk fax laws. This report addresses (1) FCC's junk fax procedures and outcomes, (2) the strengths and weaknesses of FCC's procedures, and (3) FCC's junk fax management challenges."

A letter report issued by the Government Accountability Office with an abstract that begins "The Navy determined that its current hospital on Guam does not meet modern facility standards. Moreover, the military population on Guam is expected to grow from 15,000 to over 39,000 due to DOD plans to move Marine Corps units from Okinawa, Japan to Guam and expand other on- island capabilities. The Navy plans to construct a new hospital and two outpatient clinics as part of its facility solution to replace the current hospital and accommodate additional health care requirements. This report (1) describes the Navy's plans for developing its military treatment facility solution to meet the expected increases in the military population on Guam, and (2) examines the extent to which the Navy is assured that its proposed military treatment facility solution on Guam will sufficiently meet the requirements for the expected increase in military population. To address these objectives, GAO reviewed documentation including the Navy's plans for its military treatment facility solution and interviewed key officials within the Military Health System"

A chapter report issued by the General Accounting Office with an abstract that begins "Extensive markup language (XML) is a flexible, nonproprietary set of standards designed to facilitate the exchange of information among disparate computer systems using Internet protocols. Although XML's technical standards, such as specifications for tagging, exchanging, and displaying information, have largely been worked out by commercial standards setting organizations and are in use, equally important business standards are not as mature and may complicate near-term implementation. Standards are not yet complete for (1) identifying potential business partners for transactions, (2) exchanging precise technical information about the nature of proposed transactions that partners can agree to, and (3) executing agreed-upon transactions in a formal, legally binding manner. The federal government faces many challenges as it attempts to gain the most from XML's potential. First, no explicit governmentwide strategy for XML adoption has been defined to guide agency implementation efforts and ensure that agency enterprise architectures address XML incorporation. Second, federal agencies have not yet identified and consolidated their needs for effective representation before key standards setting bodies. Third, the government has yet to establish a registry of government-unique XML data structures for systems developers to consult when building …

A letter report issued by the Government Accountability Office with an abstract that begins "The Nuclear Regulatory Commission (NRC) periodically reviews licensees’ decommissioning funds and related licensee data to determine if licensees have provided reasonable assurance that they will accumulate adequate funds for decommissioning. For example, licensees must submit estimates to NRC of decommissioning costs throughout the life of the reactor and submit fund status reports at least every 2 years while the reactor is operating. Licensees typically accumulate such funds over time through trust fund investments. The minimum amount of funds considered adequate is established by NRC’s decommissioning funding formula, which is based on information collected more than 30 years ago."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on states' practices regarding Medicaid reimbursement of school-based administrative activities, focusing on: (1) the extent to which school districts and states claim Medicaid reimbursement for school-based health services and administrative activities; (2) the appropriateness of methods states use to establish bundled rates for school-based health services and to assess the costs of administrative activities that their schools may claim as reimbursable; (3) states' retention of federal Medicaid reimbursement for services provided by schools and schools' practice of paying contingency fees to private firms; and (4) the adequacy of the Health Care Financing Administration's (HCFA) oversight of state practices regarding school-based claims, including safeguards employed to ensure appropriate billing for health services and administrative activities."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on states' social service contracting, focusing on: (1) the extent to which state government employees have moved to positions at social service contractors and the impact such movement has had on the management of publicly provided social services; (2) determining the relative success in winning contracts by contractors who hired state employees and contractors who did not; (3) state ethics laws, policies, and enforcement approaches that address the employment of former state employees and other related issues; and (4) state practices for holding contractors accountable for achieving program results through contracted services."

A letter report issued by the General Accounting Office with an abstract that begins "The Department of Justice (DOJ) recovered more than $1.2 billion in health care fraud cases in fiscal year 2001. The False Claims Act bolstered DOJ's recoveries and enabled the government to seek damages and penalties against providers who knowingly submitted fraudulent bills to Medicare, Medicaid, or other government programs. In the late 1990s, industry representatives voiced concerns that DOJ had over zealously pursued hospitals, conducted unwarranted investigations, and demanded large penalties for unintentional errors. In response, DOJ issued guidance that emphasized the importance of using the act in a fair and even-handed manner and introduced new procedures for national initiatives. DOJ requires all U.S. Attorneys' Offices that pursue civil health care fraud to annually certify their compliance with the guidance. DOJ appears to be conducting its three national initiatives consistent with the guidance. U.S. Attorneys' Offices that GAO visited had coordinated their activities with the national initiative working groups and, as the guidance requires, took each hospital's unique circumstances into consideration in resolving these matters. Representatives from the American Hospital Association and the state hospital associations GAO spoke to were generally satisfied that U.S. Attorneys' Offices …

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the policies, procedures, and practices of the military departments for protecting the confidentiality of communications between military dependents and counselors, therapists, and other service providers regarding family abuse, focusing on the: (1) extent of reported spousal and child abuse within the military; (2) degree to which dependent conversations about family abuse are subject to disclosure; and (3) nature of Department of Defense (DOD) efforts to address the confidentiality of dependent communications."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Department of Agriculture's implementation of legislative reforms to the Market Access Program (MAP) and their impact on program participation."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on Medicare beneficiaries' access to home oxygen equipment, focusing on: (1) changes in access to home oxygen for Medicare patients since the payment reduction mandated by the Balanced Budget Act (BBA) of 1997 took effect; and (2) actions taken by the Health Care Financing Administration (HCFA) to fulfill the BBA requirements and respond to GAO's November 1997 recommendations."

A letter report issued by the General Accounting Office with an abstract that begins "To determine the number and type of munitions needed, the military annually evaluates its munition requirements using a multiphase analytical process. The Department of Defense (DOD) is working to ensure that the requirements determination process yields accurate numbers and the types of munitions needed to defeat threats specified in the Defense Planning Guidance. Although DOD has made progress and has identified specific areas still requiring attention, there is no clear plan with time frames for resolving key issues. Some of these issues have only been partially completed and others are in the early stages of evolution. Specifically, target templates have not been completed and munitions effectiveness data has not been updated, nor have decisions been made on more detailed warfighting scenarios and the ranking of scenarios. Consequently, the reliability of the services' munitions requirements remain uncertain and could affect munitions planning, programming, budgeting, and industrial production base decisions. Until these issues are resolved and a revised Capabilities-Based Management Requirements instruction is issued, the accuracy of the munitions requirements will remain uncertain."

The objective of Phase I of this project is to support the Solar Central Receiver Power Plant research, development and demonstration effort by: (1) Establishment of a heliostat design, with associated manufacturing, assembly, installation and maintenance approaches, that, in quantity production will yield significant reductions in capital and operating costs over an assumed 30 year plant lifetime as compared with existing designs. (2) Identification of needs for near term and further research and development in heliostat concept, materials, manufacture, installation, maintenance, and other areas, where successful accomplishment and application would offer significant payoffs in the further reduction of the cost of electrical energy from Solar Central Receiver Power Plants. The Phase I study will define a low-cost heliostat preliminary design and the conceptual design of a heliostat manufacturing/installation plan which will result in low life cycle cost when produced and installed at high rate and large quantities for commercial Solar Central Receiver Power Plants. The study will develop the annualized life cycle cost and the performance of heliostats for a 30 year plant life, for each of three rates of continuous production and installation. The three specified rates are 25,000, 250,000, and 1,000,000 heliostats per year. The analysis of these …

The main results are in the following three areas: (1) examination of a diffusion model for PdH system, (2) connection between the diffusion model and other physical models, (3) related problems. Advances made during the third year of this project, particularly in understanding the physical model for hydrogen diffusion, make it possible to begin to meet some of the long-range objectives described in the initial proposals of 1977-1978.

A letter report issued by the Government Accountability Office with an abstract that begins "Some states and countries allow taxpayers to prepare and file tax returns on their Internet Web sites at no charge, an option not available to federal taxpayers. Such a service might mitigate the concerns taxpayers have about current electronic filing options, which require filing through a third party and may involve fees. Increased electronic filing would reduce IRS's paper processing costs, reduce transcription errors, and speed up refunds. However, the idea is controversial. IRS already has a Free File program which offers free return preparation and filing by private companies for some people via IRS's Web site. Some are opposed to IRS competing with tax preparation software companies. GAO was asked to (1) describe IRS's options for on-line preparation and filing (I-file) based on states' experiences; (2) determine the benefits and costs of I-file based on the experiences of the states; and (3) describe the potential for IRS to realize cost savings from I-file. GAO profiled 7 states and the District of Columbia, 2 foreign countries and 3 federal agencies to describe I-file options and determine their benefits and costs."

A letter report issued by the Government Accountability Office with an abstract that begins "The Department of Homeland Security (DHS) is coordinating in a variety of ways with tribes, such as through joint operations and shared facilities and Operation Stonegarden--a DHS grant program intended to enhance coordination among local, tribal, territorial, state, and federal law enforcement agencies in securing United States borders. However, the Border Patrol and tribes face coordination challenges. Officials from five tribes reported information-sharing challenges with the Border Patrol, such as not receiving notification of federal activity on their lands. Border Patrol officials reported challenges navigating tribal rules and decisions. Border Patrol and DHS have existing agreements with some, but not all, tribes to address specific border security issues, such as for the establishment of a law enforcement center on tribal lands. These agreements could serve as models for developing additional agreements between the Border Patrol and other tribes on their specific border security coordination challenges. Written government-to-government agreements could assist Border Patrol and tribal officials with enhancing their coordination, consistent with practices for sustaining effective coordination. DHS established an office to coordinate the components' tribal outreach efforts, which has taken actions such as monthly teleconferences with …

This report discusses Test Campaign TC07 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC07. Prior to TC07, the Transport Reactor was modified to allow operations as an oxygen-blown gasifier. Test Run TC07 was started on December 11, 2001, and the sand circulation tests (TC07A) were completed on December 14, 2001. The coal-feed tests (TC07B-D) were started on January 17, 2002 and completed on April 5, 2002. Due to operational difficulties with the reactor, the unit was taken offline several times. The reactor temperature was varied between 1,700 and 1,780 F at pressures from 200 to 240 psig. In TC07, 679 hours of solid circulation and 442 hours of coal feed, 398 hours with PRB coal and 44 hours with coal from the Calumet mine, and 33 hours of coke breeze feed were attained. Reactor operations were problematic due to …

Renewable energy certificates (RECs) represent the bundle of information that describes the characteristics of renewable electricity generation, and may be (and increasingly are) sold separately from the underlying electricity itself. RECs are a relatively new phenomenon, emerging as a tradable commodity in voluntary markets in the late 1990s, and gaining strength as a means of compliance with various state policy requirements affecting renewable generation in the early 2000s (Holt and Bird 2005). Twenty states and Washington, D.C. now have mandatory renewables portfolio standard (RPS) obligations, and most of these may be satisfied by owning and retiring RECs. Many states also have fuel source and emissions disclosure requirements, for which RECs are useful. Even where state policy does not allow unbundled and fully tradable RECs to meet these requirements, RECs may still be used as an accounting and verification tool (REC tracking systems are in place or under development in many regions of the U.S.). These applications, plus REC trading activity in support of voluntary green claims, give rise to potential ''double counting'' to the extent that the purchaser of the RECs and the purchaser of the underlying electricity both make claims to the renewable energy attributes of the facility in …

The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Bozeman National Topographic Map NL12-8 are presented in Volume I and II of this report. The airborne data gathered are reduced by ground computer facilities to yield profile plots of the basic uranium, thorium, and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units. The distribution of data within each geologic unit, for all surveyed map lines and tie lines, has been calculated and is included. Two sets of profiled data for each line are included with one set displaying the above-cited data. The second set includes only flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station. A general description of the area, including descriptions of the various geologic units and the corresponding airborne data, is included also.