Impervious areas definition
Impervious areas means any exterior surface which does not allow rain water to pass through it into the soil.
Impervious areas means areas which have no or limited ability to transmit fluids. Impervious areas occur where the soil surface is sealed eliminating rainwater infiltration and natural groundwater recharge. They consist mainly of artificial structures such as pavements, rooftops, sidewalks, roads, and parking lots covered by materials such as asphalt, concrete, brick, and stone. Soils compacted by urban development are also highly impervious.
Impervious areas means that hard surface area which either prevents or retards the entry of water into the soil mantle and/or causes water to run off the surface in greater quantities or at an increased rate of flow from that present under natural conditions prior to development. Common impervious surfaces include, but are not limited to, roof tops, walkways, patios, driveways, parking lots or storage areas, concrete or asphalt paving, gravel roads, packed earthen materials, and oiled, macadam or other surfaces which similarly impede the natural infiltration of surface and stormwater runoff. Open, uncovered retention/detention facilities shall not be considered as impervious surfaces for the purposes of this Chapter. (See also "New Impervious Surface.")
Examples of Impervious areas in a sentence
Impervious areas (both treated and untreated) are calculated by summing the impervious area for all tributary land uses.
Criteria for application of this method include: • Impervious areas are present in tributary watersheds • Varying land uses across tributary watersheds • Treatment BMPs are present in tributary areas Table 1.
Impervious areas for the future southbound right-turn lanes will be provided by other engineering firms in coordination with the BOARD.
More Definitions of Impervious areas
Impervious areas means that hard surface area which either prevents or retards the entry of water into the soil mantle and/or causes water to run off the surface in greater quantities or at an increased rate of flow from that present under natural conditions prior to development. Common impervious surfaces include,
Impervious areas means the sum of the following: