A treatability test was conducted for the In Situ Redox Manipulation (ISRM) technology at the US Department of Energy's Hanford, Washington 100D Area. The target contaminant was dissolved chromate [Cr(VI)] in groundwater. The ISRM technology involves creating a permeable subsurface treatment zone to reduce mobile chromate in groundwater to an insoluble form. The ISRM permeable treatment zone is created by reducing ferric iron [Fe(III)] to ferrous iron [Fe(II)] within the aquifer sediments. This is accomplished by injecting aqueous sodium dithionite into the aquifer and withdrawing the reaction products. The goal of the treatability test was to create a linear ISRM barrier by injecting sodium dithionite into five wells. Well installation and site characterization activities began in the spring of 1997. The first dithionite injection took place in September 1997. The results of this first injection were monitored through the spring of 1998; the remaining four dithionite injections were carried out in May through July of 1998. These five injections created a reduced zone in the Hanford unconfined aquifer 150 feet in length (perpendicular to groundwater flow) by 50 feet wide. The reduced zone extended over the thickness of the unconfined zone, which is approximately 15 feet. Analysis of recent groundwater …

This report describes the groundwater monitoring and corrective-action program at the M-Area Hazardous Waste Management Facility (HWMF) and the Metallurgical Laboratory (Met Lab) HWMF at the Savannah River Site (SRS) during 1998.

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The Visible-Infrared SASE Amplifier (VISA) undulator consists of four 99cm long segments. Each undulator segment is set up on a pulsed-wire bench, to characterize the magnetic properties and to locate the magnetic axis of the FODO array. Subsequently, the location of the magnetic axis, as defined by the wire, is referenced to tooling balls on each magnet segment by means of a straightness interferometer. After installation in the vacuum chamber, the four magnet segments are aligned with respect to themselves and globally to the beam line reference laser. A specially designed alignment fixture is used to mount one straightness interferometer each in the horizontal and vertical plane of the beam. The goal of these procedures is to keep the combined rms trajectory error, due to magnetic and alignment errors, to 50{micro}m.

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The Advanced Photon Source (APS) design incorporated a positron accumulator ring (PAR) as part of the injector chain. In order to increase reliability and accommodate other uses of the injector, APS will run with electrons, eliminating the need for the PAR, provided another method of eliminating rf bucket pollution in the APS is found. Satellite bunches captured from an up to 30-ns-long beam from the linac need to be removed in the injector synchrotron and storage ring. The bunch cleaning method considered here relies on driving a stripline kicker with an amplitude modulated (AM) carrier signal where the carrier is at a revolution harmonic sideband corresponding to the vertical tune. The envelope waveform is phased so that all bunches except a single target bunch (eventually to be injected into the storage ring) are resonated vertically into a scraper. The kicker is designed with a large enough shunt impedance to remove satellite bunches from the injection energy of 0.4 GeV up to 1 GeV. Satellite bunch removal in the storage ring relies on the single bunch current tune shift resulting from the machine impedance. Small bunches remaining after initial preparation in the synchrotron may be removed by driving the beam vertically …

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This study suggests that a strong poitential exists for both chemical and biological fouling of the injection wells at the F- and H Area remediation systems. To further the potential, an evaluation of WTU process chemistry, characterization of the natural groundwater geochemistry, and analysis of microbiological activity should be performed. This report summarizes the results.

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This Community Involvement Plan has been prepared by the Brookhaven National Laboratory's Community Involvement Office with the input of the community, Laboratory employees and representatives of the U.S. Department of Energy. The process to develop the plan began with the formation of a focus group consisting of representatives from: the community at large; special interest groups within the community; the business community; Laboratory retirees; senior and line management from the Laboratory; and the U.S. Department of Energy. The focus group reviewed an initial outline developed by the Office of Community involvement, held in-depth roundtable discussions of community involvement needs, and created a draft plan based on their discussions. A workshop was held to present the draft Community Involvement Plan to a wider audience for their input and insights on how Brookhaven should involve the community in decision making. This workshop was advertised in local newspapers and within the Laboratory. It was attended by community members, special interest group representatives, Laboratory employees and managers, U.S. Department of Energy-Brookhaven Group management, and members of the Laboratory's Community Advisory Council. The results of the workshop discussions are incorporated in this plan.

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Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the General Services Administration (GSA) and the Department of Defense (DOD) personal property programs."

Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Military Traffic Management Command's (MTMC) first interim progress report on the Department of Defense's demonstration program (MTMC pilot) to improve personal property shipments of the armed forces, focusing on MTMC's plan for evaluating the: (1) pilot results; and (2) proposed industry alternative called the Commercial-Like Activities for Superior Quality (CLASS) proposal."

The objective of this analysis is to develop a proposed repository subsurface layout for ''Design Alternative No.2: Low Thermal Load, 25 MTU/Acre at 38 Meter Drift Spacing''. The scope of this analysis covers: (1) Integration of the Exploratory Studies Facility (ESF) openings into the proposed repository layout for Design Alternative No.2. (2) Identification and incorporation of factors influencing the proposed repository layout. These factors include the required drift spacing, total required emplacement length, the number of emplacement drifts, required development, and subsurface ventilation. (3) Geometry and configuration of the proposed repository openings. Development of a proposed layout showing the required emplacement area.

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a women's choir concert performed at the UNT College of Music Winspear Hall.

A jazz recital performed at the UNT College of Music Kenton Hall.

Operation of the 242-16H High Level Waste Evaporator proves crucial to liquid waste management in the H-Area Tank Farm. Recent operational history of the Evaporator showed significant solid formation in secondary lines and in the evaporator pot. Additional samples remain necessary to ensure material identity in the evaporator pot. Analysis of these future samples will provide actinide partitioning information and dissolution characteristics of the solid material from the pot to ensure safe chemical cleaning.

Measurements of the rates for the hadronic decays B{sup {+-}} {r_arrow} {pi}K along with the CP-averaged B{sup {+-}} {r_arrow} {pi}{sup {+-}} {pi}{sup 0} branching ratio can be used to bound and extract the weak phase {gamma} = arg(V{sub ub}*). Using preliminary CLEO data, we obtain the bounds {vert_bar}{gamma}{vert_bar} > 93{degree} at 1 {sigma}, and {vert_bar}{gamma}{vert_bar} > 71{degree} at 90% confidence level.

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A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the reporting of lobbying activities by organizations that have employees who lobby on the organizations' behalf and have the option to report their lobbying expenses under the Lobbying Disclosure Act (LDA) of 1995 or applicable Internal Revenue Code (IRC) provisions that they use for tax purposes, focusing on: (1) the differences between the LDA and IRC section 4911 and 162(e) definitions of lobbying; (2) the impact that differences in the definitions may have on registration and reporting under LDA, including information on the number of organizations using each definition and the expenses they have reported; and (3) identifying and analyzing options, including harmonizing the three definitions, that may better ensure that the public disclosure purposes of LDA are realized."