Impervious soil definition

Impervious soil means soil that has a minimum percolation rate slower than one inch in sixty minutes when the groundwater level is at least eighteen inches below the bottom of the percolation test hole.
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Examples of Impervious soil in a sentence

  • Impervious soil or hardpan within 4 1/2 feet of the ground surface.

  • These deal with Professional Ethics pertinent to writing, publications and Entrepreneurship skill development.

  • Impervious soil and all organic muck shall be removed and replaced with clean pervious fill to provide drainage as necessary.

Related to Impervious soil

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

  • Contaminated soil means soil that meets all of the following criteria:

  • 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;

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

  • 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.

  • Hazardous substance UST system means an UST system that contains a hazardous substance defined in section 101(14) of the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (but not including any substance regulated as a hazardous waste under subtitle C) or any mixture of such substances and petroleum, and which is not a petroleum UST system.

  • Contamination means an impairment of the quality of the waters of the state by waste to a degree which creates a hazard to the public health through poisoning or through the spread of disease. “Contamination” includes any equivalent effect resulting from the disposal of waste, whether or not waters of the state are affected.