Low permeability definition

Low permeability means a soil layer of well-sorted, fine grain-sized sediments or of rock that under normal hydrostatic pressures would not be significantly permeable. Low permeability soils may include homogeneous clays below the zone of weathering, mudstone, claystone, shale, and some glacial till.
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Low permeability means a permeability of less than two tenths of one inch per hour.
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Low permeability means hydraulic conductivity of ≤1 x 10-9 metres per second or equivalent;
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Examples of Low permeability in a sentence

  • Low permeability soil horizons located between the infiltrative surface and the limiting condition may be excluded from the calculation of HLLR if the cumulative thickness is less than twenty per cent of the infiltrative distance upon concurrence of the designer and the board of health.

  • Low permeability is6 specified for the engineered materials, and construction methods ensure a tight interface.

  • Low -permeability layer(s) overlying contaminated groundw ater (i.e., “aquicludes”) can, likew ise, impede the flux of vapors from the contaminated plume to the vadose zone.

  • Low permeability layers such as silts and clays have smaller pore sizes and do not transmit gas vapors as readily.

  • Low permeability strata trap methane in features such as stratigraphic reservoirs, anticlines, and faults.

  • Low permeability areas can have high residual contaminant concentrations while vapor extraction off-gases indicate cleanup is complete.

  • Low permeability layers, either natural or as part of the building’s construction may restrict migration of vapors from a ground water contamination source and result in relatively clean SSSG samples even though the underlying ground water is contaminated.

  • Low permeability barrier soil covers: A low permeability barrier soil cover is a layer of low permeability soil constructed to minimize precipitation migration into the landfill.

  • An additional 25 acres adjacent to the railroad were annexed to the Town by the then owner, Maryvale LLC, and added to the PDD.

  • Low permeability to prevent migration of adjacent fines into the set mix.


More Definitions of Low permeability

Low permeability means a surface with a permeability of 2 x 10-10 metres/second or less;
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Related to Low permeability

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