A letter report issued by the Government Accountability Office with an abstract that begins "The increasing need for warfighters for the Global War on Terrorism has meant longer and multiple deployments for soldiers. Medical readiness is essential to their performing needed duties, and an impairment that limits a soldier's capacities represents risk to the soldier, the unit, and the mission. Asked to review the Army's compliance with its guidance, GAO examined the extent to which the Army is (1) adhering to its medical and deployment requirements regarding decisions to send soldiers with medical conditions to Iraq and Afghanistan, and (2) deploying soldiers with medical conditions requiring duty limitations, and assigning them to duties suitable for their limitations. GAO reviewed Army guidance, and medical records for those preparing to deploy between April 2006 and March 2007; interviewed Army officials and commanders at Forts Benning, Stewart, and Drum, selected for their high deployment rates; and surveyed deployed soldiers with medical limitations."

A statement of record issued by the Government Accountability Office with an abstract that begins "In 1996, the former U.S. Immigration and Naturalization Service, now within the Department of Homeland Security (DHS), and the Social Security Administration (SSA) began operating a voluntary pilot program, recently named the E-Verify program, to provide participating employers with a means for electronically verifying employees' work eligibility. Legislation has been introduced in Congress to require all employers to electronically verify the work authorization status of their employees. In this statement GAO provides observations on the E-Verify system's capacity and costs, options for reducing delays and improving efficiency in the verification process, ability to detect fraudulent documents and identity theft, and vulnerability to employer fraud and misuse. This statement is based on GAO's products issued from August 2005 through June 2007 and updated information obtained from DHS and SSA in April 2008. We analyzed data on employer use, E-Verify guidance, and other reports on the employment verification process, as well as legislative proposals and regulations."

A letter report issued by the Government Accountability Office with an abstract that begins "The Compact of Free Association between the Republic of Palau and the United States entered into force on October 1, 1994, with the U.S. interest of promoting Palau's self-sufficiency and economic advancement. The compact and its related subsidiary agreements provide for a 15-year term of economic assistance. In fiscal year 2009, the two governments must review the terms of the compact and related agreements and agree on any modifications. The Department of the Interior (DOI) has primary responsibility for oversight of Palau's use of compact funds. GAO was requested to report on (1) the provision of compact and other U.S. assistance to Palau in fiscal years 1995-2009; (2) Palau's and U.S. agencies' efforts to provide accountability over Palau's use of federal funds in 1995-2006; and (3) Palau's prospects for achieving economic self-sufficiency. GAO reviewed Palau's compact annual reports, financial statements and internal control reports for fiscal years 1995-2006, as well as other compact-related documentation. GAO interviewed officials from the U.S. and Palau governments and conducted fieldwork in Palau."

A letter report issued by the Government Accountability Office with an abstract that begins "GAO previously reported that continuing problems in billing and collection processes at the Department of Veterans Affairs (VA) impaired VA's ability to maximize revenue from private (third-party) insurance companies. VA has undertaken several initiatives to address these weaknesses. GAO was asked to perform a follow-up audit to (1) evaluate VA billing controls, (2) assess VA-wide controls for collections, (3) determine the effectiveness of VA-wide oversight, and (4) provide information on the status of key VA improvement initiatives. GAO performed case study analyses of the third-party billing function, statistically tested controls over collections, and reviewed current oversight policies and procedures. GAO also reviewed and summarized VA information on the status of key management initiatives to enhance third-party revenue."

Testimony issued by the Government Accountability Office with an abstract that begins "The Digital Television (DTV) Transition and Public Safety Act of 2005, requires all full-power television station in the United States to cease analog broadcasting by February 17, 2009. Low-power stations are not required to cease analog transmissions and most will continue broadcasting in analog. Federal law also requires the National Telecommunications and Information Administration (NTIA) to subsidize consumers' purchases of digital-to-analog converter boxes. After the transition, households with analog sets that rely on over-the-air broadcasts must take action or they will lose television service, but some households might not be aware of this potential disruption. This testimony provides information on (1) technical and coordination issues facing full-power broadcast stations as they transition to digital, (2) issues pertaining to low-power broadcasting and how they affect consumers, and (3) the extent to which American households are aware of the DTV transition and likely to utilize the converter box subsidy program. GAO interviewed officials with the Federal Communications Commission (FCC) and NTIA and met with a wide variety of industry participants and other stakeholders. GAO conducted a Web-based survey of broadcasters to determine their status in transitioning to digital and issues …

A letter report issued by the Government Accountability Office with an abstract that begins "Like other nations, the United States faces growing food safety challenges resulting from at least three major trends. First, imported food makes up a growing share of the food supply. Second, consumers are increasingly eating foods that are raw or have had minimal processing and that are often associated with foodborne illness. Third, changing demographic patterns mean that more of the U.S. population is, and increasingly will be, susceptible to foodborne illness. In 2005, GAO reported on the approaches and challenges seven countries faced in reorganizing and consolidating food safety functions. Since then, the European Union (EU) has taken on a larger role in overseeing food safety within its 27 member states. GAO was asked to describe how Canada, the EU, Germany, Ireland, Japan, the Netherlands, and the United Kingdom (UK) (1) ensure the safety of imported food, (2) respond to outbreaks of foodborne illness, and (3) measure the effectiveness of their reorganized food safety systems. GAO also asked experts in these countries and the EU to identify emerging food safety challenges that they expect to face over the next decade. In doing this work, GAO …

The geological storage of CO{sub 2} in deep saline formations is increasing seen as a viable strategy to reduce the release of greenhouse gases to the atmosphere. There are numerous sedimentary basins in China, in which a number of suitable CO{sub 2} geologic reservoirs are potentially available. To identify the multi-phase processes, geochemical changes and mineral alteration, and CO{sub 2} trapping mechanisms after CO{sub 2} injection, reactive geochemical transport simulations using a simple 2D model were performed. Mineralogical composition and water chemistry from a deep saline formation of Songliao Basin were used. Results indicate that different storage forms of CO{sub 2} vary with time. In the CO{sub 2} injection period, a large amount of CO{sub 2} remains as a free supercritical phase (gas trapping), and the amount dissolved in the formation water (solubility trapping) gradually increases. Later, gas trapping decreases, solubility trapping increases significantly due to migration and diffusion of the CO{sub 2} plume, and the amount trapped by carbonate minerals increases gradually with time. The residual CO{sub 2} gas keeps dissolving into groundwater and precipitating carbonate minerals. For the Songliao Basin sandstone, variations in the reaction rate and abundance of chlorite, and plagioclase composition affect significantly the estimates of …

The VERtical Transport In the Global Ocean (VERTIGO) study examined particle sources and fluxes through the ocean's 'twilight zone' (defined here as depths below the euphotic zone to 1000 m). Interdisciplinary process studies were conducted at contrasting sites off Hawaii (ALOHA) and in the NW Pacific (K2) during 3 week occupations in 2004 and 2005, respectively. We examine in this overview paper the contrasting physical, chemical and biological settings and how these conditions impact the source characteristics of the sinking material and the transport efficiency through the twilight zone. A major finding in VERTIGO is the considerably lower transfer efficiency (T{sub eff}) of particulate organic carbon (POC), POC flux 500/150 m, at ALOHA (20%) vs. K2 (50%). This efficiency is higher in the diatom-dominated setting at K2 where silica-rich particles dominate the flux at the end of a diatom bloom, and where zooplankton and their pellets are larger. At K2, the drawdown of macronutrients is used to assess export and suggests that shallow remineralization above our 150 m trap is significant, especially for N relative to Si. We explore here also surface export ratios (POC flux/primary production) and possible reasons why this ratio is higher at K2, especially during the …

This presentation by Keith Wipke at the 2008 DOE Hydrogen Program Annual Merit Review Meeting provides information about NREL's Controlled Hydrogen Fleet and Infrastructure Analysis Project.

Semi-conducting CdZnTe (or CZT) crystals can be used in a variety of detector-type applications. CZT shows great promise for use as a gamma radiation spectrometer. However, its performance is adversely affected by point defects, structural and compositional heterogeneities within the crystals, such as twinning, pipes, grain boundaries (polycrystallinity), secondary phases and in some cases, damage caused by external forces. One example is damage that occurs during characterization of the surface by a laser during Raman spectroscopy. Even minimal laser power can cause Te enriched areas on the surface to appear. The Raman spectra resulting from measurements at moderate intensity laser power show large increases in peak intensity that is attributed to Te. Atomic Force Microscopy (AFM) was used to characterize the extent of damage to the CZT crystal surface following exposure to the Raman laser. AFM data reveal localized surface damage in the areas exposed to the Raman laser beam. The degree of surface damage to the crystal is dependent on the laser power, with the most observable damage occurring at high laser power. Moreover, intensity increases in the Te peaks of the Raman spectra are observed even at low laser power with little to no visible damage observed by …

The dissolution of synthetic boehmite (?-AlOOH) by 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) was examined in a series of batch adsorption/dissolution experiments. Additionally, the leaching behavior of {sup 233}U(VI) from boehmite was examined as a function of pH and HEDPA concentration. The results are discussed in terms of sludge washing procedures that may be utilized during underground tank waste remediation. In the pH range 4 to 10, complexation of Al(III) by HEDPA significantly enhanced dissolution of boehmite. This phenomenon was especially pronounced in the neutral pH region where the solubility of aluminum, in the absence of complexants, is limited by the formation of sparsely soluble aluminum hydroxides. At pH higher than 10, dissolution of synthetic boehmite was inhibited by HEDPA, likely due to sorption of Al(III):HEDPA complexes. Addition of HEDPA to equilibrated U(VI)-synthetic boehmite suspensions yielded an increase in the aqueous phase uranium concentration. Partitioning of uranium between the solid and aqueous phase is described in terms of U(VI):HEDPA speciation and dissolution of the boehmite solid phase.

In 1999, the International Safeguards Project Office began organizing topical workshops to explore technical issues facing the International Atomic Energy Agency's Department of Safeguards. Representatives from IAEA member states including the United States, national laboratories and companies were invited to the workshops to discuss the technical issues. In some cases professional facilitators were hired to lead the discussions and in some cases business gaming techniques were employed. Since 1999, the following topics have been addressed Data Communication Technologies (1999), Information Security (2000), Design and Testing for High Reliability (2001), Standardization and Integration of Unattended and Remote Monitoring Systems (2002), Roadmapping: Surveillance (2003), IAEA Seals Technology Roadmapping Workshop (2004), Turning Information Into Knowledge (2004), Safeguards Tools of the Future (2005), and Advanced Sensors for Safeguards (2007). This paper will review the scope of the workshops and summarize their results.

Measuring stress changes within seismically active fault zones has been a long-sought goal of seismology. Here we show that such stress changes are measurable by exploiting the stress dependence of seismic wave speed from an active source cross-well experiment conducted at the SAFOD drill site. Over a two-month period we observed an excellent anti-correlation between changes in the time required for an S wave to travel through the rock along a fixed pathway--a few microseconds--and variations in barometric pressure. We also observed two large excursions in the traveltime data that are coincident with two earthquakes that are among those predicted to produce the largest coseismic stress changes at SAFOD. Interestingly, the two excursions started approximately 10 and 2 hours before the events, respectively, suggesting that they may be related to pre-rupture stress induced changes in crack properties, as observed in early laboratory studies.

Large fuel casks present challenges when evaluating their performance in the accident sequence specified in 10CFR 71. Testing is often limited because of cost, difficulty in preparing test units and the limited availability of facilities which can carry out such tests. In the past, many casks were evaluated without testing using simplified analytical methods. This paper details the use of dynamic non-linear analysis of large fuel casks using advanced computational techniques. Results from the dynamic analysis of two casks, the T-3 Spent Fuel Cask and the Hanford Un-irradiated Fuel Package are examined in detail. These analyses are used to fully evaluate containment vessel stresses and strains resulting from complex loads experienced by cask components during impacts. Importantly, these advanced analytical analyses are capable of examining stresses in key regions of the cask including the cask closure. This paper compares these advanced analytical results with the results of simplified cask analyses like those detailed in NUREG 3966.

An effective safeguards program for nuclear materials is dependent on the integration of activities in the traditional safeguards elements: physical protection, protective force, and material control and accounting (MC&A). The design and integration of these traditional safeguards elements must be based on a technical analysis performed in characterizing the vulnerabilities and related risks of the facility against a designed-basis threat. Each of these elements requires a near seamless integration with each other, as well as within a site's operations organization. One of the key objectives of an effective nuclear Material Control and Accountability (MC&A) program is to address the threat posed by an active or passive 'insider' who, acting alone or in collusion, could attempt protracted or abrupt diversion or theft of special nuclear material (SNM). The function of material accountancy is to detect the loss or unauthorized removal of special nuclear material from the plant or facility in a timely manner. Detection is accomplished by means of measurements and transfer records of material movements and periodic inventories to verify that all material is accounted for. The function of material control is to assure the integrity of the nuclear material and the accountancy data. This paper focuses on the development …

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This report discusses carbon capture and sequestration (CCS), but not other types of carbon sequestration activities whereby CO2 is removed from the atmosphere and stored in vegetation, soils, or oceans.

This report gives an overview of issues involved in the provisions of the 2008 farm bill (P.L. 110-234, the Food, Conservation, and Energy Act). It includes a brief overview describing environmental services markets, benefits and barriers, recent Congressional action related to the topics, and possible considerations.

This report discusses the National Park System that includes 391 diverse units administered by the National Park Service (NPS) of the Department of the Interior. Units of the system generally are managed to preserve resources in their natural or historical conditions for the benefit of future generations.

This report discusses environmental services markets in relation to the farm bill (P.L. 110-234, the Food, Conservation, and Energy Act of 2008), which covers a range of farm and forestry sector services associated with improved water and air quality, increased carbon storage, and habitat protection. It gives an overview of environmental services markets as well as benefits and barriers, how they are affected by Congressional action, and possible considerations.

This report provides an estimate of the initial impact of the rising oil prices on the nation's merchandise trade deficit.

This report begins with an overview of Congress's authority pursuant to the Commerce and Bankruptcy Clauses to pass laws pertaining to foreclosures, and a review of Contract Clause, Substantive Due Process, and Takings Clause jurisprudence.

The 48-acre David Witherspoon, Inc. (DWI) 1630 Site operated as an unregulated industrial landfill and scrap yard. The Tennessee Division of Superfund (TDSF) closed the landfill in 1974. During the period of operation, the site received solid and liquid wastes from salvage and industrial operations. The site consists of five separate tracts of land including a small portion located across the Norfolk Southern Railroad track. The landfill occupies approximately 5 acres of the site, and roughly 20 acres of the 48 acres contains surface and buried debris associated with the DWI dismantling business operation. Beginning in 1968, the state of Tennessee licensed DWI to receive scrap metal at the DWI 1630 Site, contaminated with natural uranium and enriched uranium (235U) not exceeding 0.1 percent by weight (TDSF 1990). The U.S. Department of Energy (DOE) has agreed to undertake remedial actions at the DWI 1630 Site as specified under a Consent Order with the Tennessee Department of Environment and Conservation (TDEC) (Consent Order No. 90-3443, April 4, 1991), and as further delineated by a Memorandum of Understanding (MOU) between DOE and the State of Tennessee (MOU Regarding Implementation of Consent Orders, October 6, 1994). The soil and debris removal at the …