Impermeable definition

Impermeable means having a hydraulic conductivity equal to or less than 1 x 10-7 cm/sec as determined by field and laboratory permeability tests made according to standard test methods which may be correlated with soil densification as determined by compaction tests.
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Impermeable means utilizing a layer of natural or man-made material of sufficient thickness, density, and composition so as to have a maximum permeability for the hazardous substance being contained of 10-7 centimeters per second at the maximum anticipated hydrostatic pressure.
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Impermeable means incapable of allowing liquids to pass through the covering.
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Examples of Impermeable in a sentence

  • Impermeable membranes such as polyethylene sheet covering closed to the concrete surface may also be used to provide effective barrier against evaporation.

  • These methods may include relying predominantly on soils and vegetation; increasing the permeability of Impermeable Areas; protecting undeveloped mountains and floodplains; creating and restoring riparian habitat and wetlands; creating rain gardens, bioswales, and parkway basins; enhancing soil through composting, mulching; and, planting trees and vegetation, with preference for native species.

  • Impermeable dropcloths shall be placed on surfaces beneath all removal activity.

  • Impermeable (waterproof) driveway maintenance- Once per season homeowner checks for evidence of pooling and ice buildup, repairs grading, seals cracks, fills gaps, removes weeds.

  • Impermeable linings are required for the base and sides of the landfill, and leachate is to be collected and, if necessary, treated.


More Definitions of Impermeable

Impermeable or "Impervious" means not permitting the passage of liquids through its substance.
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Impermeable means a substance, substrate, membrane or material that is incapable of transmitting fluids.
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Impermeable means capable of holding liquid inside or keeping liquids from penetrating to the inside from the outside.
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Impermeable means a layer of natural and/or man-made material of sufficient thickness, density and composition so as to have a maximum permeability for water of 10-7 cm/sec at the maximum anticipated hydrostatic pressure.
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Impermeable. (Impervious) - shall mean not permitting the passage of liquids through its substance.
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Impermeable or “Impervious” means a natural in-place soil or emplaced soil material having a permeability of less than or equal to 1.0 X 10-7centimeters per second (cm/sec), and, in the case of an artificial liner, the liner and its construction and use have been approved in writing by the commissioner. This definition shall not apply, however, to any secondary containment system or surface that is required to be “sufficiently impervious”.
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Impermeable means utilizing a layer of natural or man-made material of sufficient thickness,
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