Subsurface Contamination Focus Area technical requirements. Volume 1: Requirements summary

This document summarizes functions and requirements for remediation of source term and plume sites identified by the Subsurface Contamination Focus Area. Included are detailed requirements and supporting information for source term and plume containment, stabilization, retrieval, and selective retrieval remedial activities. This information will be useful both to the decision-makers within the Subsurface Contamination Focus Area (SCFA) and to the technology providers who are developing and demonstrating technologies and systems. Requirements are often expressed as graphs or charts, which reflect the site-specific nature of the functions that must be performed. Many of the tradeoff studies associated with cost savings are identified in the text

Field Dressing Big Game.

8 p

Field Dressing Big Game.

8 p

Long-Term Stewardship Science and Technology Requirements

To ensure technology developed for long-term stewardship will meet existing requirements, a review of requirements was performed. In addition to identifying existing science and technology related requirements, gaps and conflicts of requirements were identified

Field Dressing Big Game.

8 p

Multi-Center Traffic Management Advisor Operational Field Test Results

The Multi-Center Traffic Management Advisor (McTMA) is a research prototype system which seeks to bring time-based metering into the mainstream of air traffic control (ATC) operations. Time-based metering is an efficient alternative to traditional air traffic management techniques such as distance-based spacing (miles-in-trail spacing) and managed arrival reservoirs (airborne holding). While time-based metering has demonstrated significant benefit in terms of arrival throughput and arrival delay, its use to date has been limited to arrival operations at just nine airports nationally. Wide-scale adoption of time-based metering has been hampered, in part, by the limited scalability of metering automation. In order to realize the full spectrum of efficiency benefits possible with time-based metering, a much more modular, scalable time-based metering capability is required. With its distributed metering architecture, multi-center TMA offers such a capability

Fiber Reinforced Polymer (FRP) Seismic Retrofit of Reinforced Concrete Bridge Columns Vulnerable to Long-Duration Subduction Zone Earthquakes

69A3551947137This research was focused on characterization of the behavior of FRP jacketed bridge columns under long-duration earthquakes. Six tests were conducted on cantilever bridge columns with FRP jackets at the base. The FRP jackets were 0.40\u201d and extended over a height of one column diameter. The FRP had specified strength of 128-ksi and elastic modulus of 14.2ksi in the circumferential direction. Test variables for the columns included longitudinal reinforcement ratio, longitudinal bar diameter, axial load ratio, and loading protocol. All tested columns had lateral deformation capacity of at least 6% drift, with lateral deformation capacity considered to occur at 20% strength loss. Axial failure was not achieved in any of the test columns, and the tests were stopped after multiple cycles at 10% drift. Five of the six test columns were nominally identical to a set of previously tested columns with FRP jackets