Sandia National Laboratories (SNL), Los Alamos National Laboratory (LANL), and the Savannah River Technology Center (SRTC) have developed a diverse group of algorithms for processing and analyzing the data that will be collected by the Multispectral Thermal Imager (MTI) after launch late in 1999. Each of these algorithms must be verified by comparison to independent surface and atmospheric measurements. SRTC has selected 13 sites in the continental U.S. for ground truth data collections. These sites include a high altitude cold water target (Crater Lake), cooling lakes and towers in the warm, humid southeastern US, Department of Energy (DOE) climate research sites, the NASA Stennis satellite Validation and Verification (V and V) target array, waste sites at the Savannah River Site, mining sites in the Four Corners area and dry lake beds in the southwestern US. SRTC has established mutually beneficial relationships with the organizations that manage these sites to make use of their operating and research data and to install additional instrumentation needed for MTI algorithm V and V.

The spectrum of chemical monitoring problems faced by the Department of Energy at its hazardous waste sites is formidable. It is likely that a variety of existing types of instrumentation will be applied in the years ahead, with varying degrees of practicality and success. A tremendous impact could be realized, however, if instrumental methods could be supplemented by a low-cost, reliable sensing technology for continuous monitoring of a range of species, including, for example, volatile organics, chlorinated hydrocarbons, ammonia, and hydrogen. To meed the diverse gas and vapor monitoring needs at ODE hazardous waste sites, the sensing system must offer, inherently, and adaptability to match the wide variety of analytes and environmental conditions that well be encountered (in tank vapor spaces, and at locations with contaminated soil or groundwater.) The purpose of this project was to investigate scientific and technical concepts that could enable a MEMS-based chemical sensing technology (developed in its foundational form at NIST during early and mid 1990's) to be made tunable for multiple target analytes in differing types of backgrounds relevant to DOE waste storage and remediation

None

The purpose of this project proposal revision is to request authorization of total project funds for back-up radioiodine removal and additional nitric acid recovery facilities for the Purex Plant. It is proposed to provide new facilities at the Purex Plant for the further removal of radioiodine from the dissolver off gases and for further recovery of nitric acid. The facility design will be based on meeting iodine emission requirements under 1961 goal conditions. It is expected that the facilities will include equipment such as an acid absorber, a caustic scrubber, heat exchangers, process vessels, process piping, jets, jumpers, remote control instrumentation, a continuous iodine monitor, new utility supply and discharge piping, waste disposal facilities, utilities, and other auxiliaries. The new equipment will be housed in a reinforced concrete building and vault which will provide necessary shielding and contamination control. A new vessel will also be installed in the 202-A aqueous-make-up facility. The equipment will be contact maintained. Some work will also be performed for tie-ins and alternations to existing facilities. The new iodine removal facilities are desired as early as practical since the effect of iodine emission on the environs surrounding HAPO is more serious during the winter months.

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