Impervious definition
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.
Impervious means nonporous, impenetrable, smooth, and washable.
Impervious means a material of sufficient thickness, density and composition that is impenetrable, or has a permeability of less than 1 X 10 7 cm/sec. to the Regulated Substance, and that will prevent the discharge to the lands, ground waters, or surface waters of the State 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 material.
Examples of Impervious in a sentence
Impervious surfaces will not exceed one percent (1%) of the Property.
Impervious surfaces are defined as material that does not allow water to percolate into the soil on the Property; including, but not limited to, buildings with or without flooring, paved areas, and any other surfaces that are covered by asphalt, concrete, or roofs.
More Definitions of Impervious
Impervious means a material having permeability not greater than 1x10-7 cm per second when subjected to a head of 0.305 m of water where permeability is not affected by the liquid it is meant to contain.
Impervious means materials and/or construction that prevents or greatly reduces the infiltration of water into the soil.
Impervious means that which will not allow entrance or passage, such as an airtight plastic container that will not allow the entrance of moisture or vermin.
Impervious means a natural material that demonstrates a hydraulic conductivity of 10-6 cm/s or less as determined in situ or of 10-7cm/s or less as determined in a laboratory from a representative disturbed sample, or a synthetic membrane liner or barrier appropriately selected to control the migration of specific fluids;
Impervious means a material that does not allow another substance to pass through or penetrate.
Impervious means incapable of being penetrated.
Impervious means a hard surface area (e.g., driveway or rooftop) that prevents or impedes the entry of water into the soil, thus causing water to run off the surface in greater quantities or at an increased rate of flow, as defined in Section 11.02.010.