Impervious barrier definition

Impervious barrier means a barrier of sufficient thickness, density, and composition that is impenetrable to the regulated substance, has a permeability of at least 1 X 10-6 cm/sec., and will prevent the discharge to the environment of any regulated substance for a period of at least as long as the maximum anticipated time during which the regulated substance will be in contact with the impervious material.
Impervious barrier means any material or structure on, above, or below the ground that does not allow precipitation or surface water to penetrate directly into the underlying surface.

Examples of Impervious barrier in a sentence

  • Impervious barrier membrane properly placed between top of MSE wall and drainage layer.

Related to Impervious barrier

  • Impervious surface means a surface that has been covered with a layer of material so that it is highly resistant to infiltration by water.

  • Impervious area means any surface that does not allow stormwater to infiltrate into the ground.

  • Impervious - means not allowing the passage of water through the surface of the ground or ground covering or a substantial reduction in the capacity for water to pass through the surface of the ground or ground covering.

  • Pervious surface means an area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.

  • Regulated impervious surface means any of the following, alone or in combination:

  • Barrier means Barrier Level x R (initial).

  • Tank means an enclosed space which is formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.

  • Wildlife habitat means a surface water of the state used by plants and animals not considered as pathogens, vectors for pathogens or intermediate hosts for pathogens for humans or domesticated livestock and plants.

  • Impact surface means an interior or exterior surface that is subject to damage by repeated sudden force such as certain parts of door frames.

  • Loading or unloading means the handling of property:

  • Underground storage means storage of gas in a subsurface stratum or formation of the earth.

  • Waterproofer means a product designed and labeled exclusively to repel water from fabric or leather substrates. Waterproofer does not include fabric protectants.

  • Underground tank means a device meeting the definition of tank whose entire surface area is totally below the surface of and covered by the ground.

  • Impervious cover means a surface composed of material that significantly impedes or prevents natural infiltration of water into soil.

  • Floodproofing means any combination of structural and nonstructural additions, changes, or adjustments to structures which reduce or eliminate flood damage to real estate or improved real property, water and sanitation facilities, structures, and their contents.

  • Tractor truck means every motor vehicle designed and used primarily for drawing other vehicles

  • Iatrogenic infertility means an impairment of fertility by surgery, radiation, chemotherapy, or other medical treatment affecting reproductive organs or processes.

  • Topsoil means a varying depth (up to 300 mm) of the soil profile irrespective of the fertility, appearance, structure, agricultural potential, fertility and composition of the soil;

  • Contaminate means the addition of sediment, any other pollutant or waste, or any illicit or prohibited discharge.

  • Non-Administrator Substance Use Disorder Treatment Facility means a Substance Use Disorder Treatment Facility that does not meet the definition of an Administrator Substance Use Disorder Treatment Facility.

  • The Site, where applicable, means the designated project place(s) named in the bidding document.

  • Pile means any non-containerized accumulation of solid, nonflowing hazardous waste that is used for treatment or storage and that is not a containment building.

  • Underground storage tank or “UST” means any one or combination of tanks (including underground pipes connected thereto) that is used to contain an accumulation of regulated substances, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground. This term does not include any:

  • Undercoating means any aerosol product designed to impart a protective, non-paint layer to the undercarriage, trunk interior, and/or firewall of motor vehicles to prevent the formation of rust or to deaden sound. “Undercoating” includes, but is not limited to, rubberized, mastic, or asphaltic products.

  • impermeable surface means a surface or pavement constructed and maintained to a standard sufficient to prevent the transmission of liquids beyond the pavement surface, and should be read in conjunction with the term “sealed drainage system” (below).