Summary of activities at the Engineered Barriers Test Facility, October 1, 1995 to January 31, 1997, and initial data

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Replicates of two engineered barrier designs (a thick soil barrier and a bio/capillary barrier) were constructed in the test plots of the facility. Prior to placement of any soil in the test plots, instruments were calibrated and attached to plot instrument towers, which were then installed in the test plots. Soil from Spreading Area B was installed in the test plots in lifts and compacted. Instruments attached to the instrument tower were placed in shallow trenches dug in the lifts and buried. Each instrument was checked to make sure it functioned prior to installation of the next lift. Soil samples ... continued below

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48 p.

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Porro, I. & Keck, K.N. March 1, 1997.

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Description

Replicates of two engineered barrier designs (a thick soil barrier and a bio/capillary barrier) were constructed in the test plots of the facility. Prior to placement of any soil in the test plots, instruments were calibrated and attached to plot instrument towers, which were then installed in the test plots. Soil from Spreading Area B was installed in the test plots in lifts and compacted. Instruments attached to the instrument tower were placed in shallow trenches dug in the lifts and buried. Each instrument was checked to make sure it functioned prior to installation of the next lift. Soil samples were collected from each lift in one plot during construction for later determination of physical and hydraulic properties. After completion of the test plots, the data acquisition system was finalized, and data collection began. Appropriate instrument calibration equations and equation coefficients are presented, and data reduction techniques are described. Initial data show test plot soils drying throughout the summer and early fall. This corresponds to low rainfall during this period. Infiltration of water into the test plots was first detected around mid-November with several subsequent episodes in December. Infiltration was verified by corresponding measurements from several different instruments [time domain reflectometry (TDR), neutron probe, thermocouple psychrometers, and heat dissipation sensors]. Tensiometer data does not appear to corroborate data from the other instruments. Test plots were warmer on the side closest to the access trench indicating a temperature effect from the trench. This resulted in greater soil moisture freezing with less and shallower infiltration on the far side of the plots than on the side closest to the trench. At the end of this monitoring period, infiltration in all but two of the test plots has reached the 155-cm depth. Infiltration in test plots B2 and S3 has reached only the 140-cm depth. The monitored infiltration events have not resulted in drainage from the bottom of the test plots.

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48 p.

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INIS; OSTI as DE98058445

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  • Other Information: PBD: Mar 1997

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  • Other: DE98058445
  • Report No.: INEEL/EXT--97-00239
  • Grant Number: AC07-94ID13223
  • DOI: 10.2172/296609 | External Link
  • Office of Scientific & Technical Information Report Number: 296609
  • Archival Resource Key: ark:/67531/metadc685901

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  • March 1, 1997

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • June 13, 2016, 9:02 p.m.

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Porro, I. & Keck, K.N. Summary of activities at the Engineered Barriers Test Facility, October 1, 1995 to January 31, 1997, and initial data, report, March 1, 1997; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc685901/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.