6 Matching Results

Search Results

Advanced search parameters have been applied.
in creator/contributor: "Downs, JL"  
Results: 1 - 6
open access

Status of FY 1988 soil-water balance studies on the Hanford site

Description: Natural recharge (i.e., the amount of water from meteorological sources, such as rainfall or snowmelt, that infiltrates through the vadose zone to the groundwater table) at the Hanford Site is a variable quantity because it depends on soil, plant, and climatic factors that vary in time and space over the Site. Water balance data have been collected at selected locations at the Hanford Site for the past 10 years in an attempt to measure or estimate natural recharge for known soil, plant, and cli… more
Date: February 1, 1989
Creator: Gee, G.W.; Rockhold, M.L. & Downs, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Field Lysimeter Test Facility (FLTF) at the Hanford Site: Installation and initial tests

Description: The objectives of this program are to test barrier design concepts and to demonstrate a barrier design that meets established performance criteria for use in isolating wastes disposed of near-surface at the Hanford Site. Specifically, the program is designed to assess how well the barriers perform in controlling biointrusion, water infiltration, and erosion, as well as evaluating interactions between environmental variables and design factors of the barriers. To assess barrier performance and d… more
Date: February 1, 1989
Creator: Gee, G.W.; Kirkham, R.R.; Downs, J.L. & Campbell, M.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Recharge Data Package for the Immobilized Low-Activity Waste 2001 Performance Assessment

Description: Lockheed Martin Hanford Company (LMHC) is designing and assessing the performance of disposal facilities to receive radioactive wastes that are currently stored in single- and double-shell tanks at the Hanford Site. The preferred method of disposing of the portion that is classified as immobilized low-activity waste (ILAW) is to vitrify the waste and place the product in near-surface, shallow-land burial facilities. The LMHC project to assess the performance of these disposal facilities is know… more
Date: January 18, 2000
Creator: Fayer, MJ; Murphy, EM; Downs, JL; Khan, FO; Lindenmeier, CW & Bjornstad, BN
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of a sagebrush (Artemisia tridentata ssp. wyomingensis) die-off on the Handford Site

Description: The Hanford Site contains one of the few remaining contiguous areas of shrub-steppe habitat left in Washington State. This habitat is home to many native plant and wildlife species, some of which are threatened with extinction or are unique to the Site. The importance of the Hanford Site increases as other lands surrounding the Site are developed, and these native species and habitats are lost. Stands of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) on the Site are a particular… more
Date: September 1, 1997
Creator: Cardenas, A.; Lewinsohn, J.; Auger, C.; Downs, J.L.; Cadwell, L.L. & Burrows, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evaportranspiration studies for protective barriers: FY 1989 status report

Description: This document describes the results of technological developments and experiments at the Small Tube Lysimeter Facility. The objective of this research is to develop the capability to predict evapotranspiration in support of studies of water infiltration control for the Hanford Protective Barrier Development Program. Evapotranspiration is the combined loss of water from plants and soil surfaces to the atmosphere. This process must be predictable to adequately model soil water dynamics. We develo… more
Date: May 1, 1992
Creator: Link, S.O.; Thiede, M.E.; Downs, J.L.; Lettau, D.J. (Pacific Northwest Lab., Richland, WA (United States)) & Waugh, W.J. (Geotech, Grand Junction, CO (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Evapotranspiration studies for protective barriers: FY 1990 status report

Description: Pacific Northwest Laboratory (PNL) and Westinghouse Hanford Company (Westinghouse Hanford) are working together to develop for the US Department of Energy (DOE) protective barriers for the near-surface disposal of hazardous waste at the Hanford Site. The proposed barrier design consists of a layer of fine-textured soil overlying a series of layers grading from sand to basalt riprap. A multiyear research program is being conducted to assess the long-term performance of barrier configurations in … more
Date: May 1, 1992
Creator: Link, S.O.; Downs, J.L.; Thiede, M.E.; Lettau, D.J.; Twaddell, T.R. (Pacific Northwest Lab., Richland, WA (United States)) & Black, R.A. (Washington State Univ., Pullman, WA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen