Subsurface Drains definition

Subsurface Drains means any system of below surface piping or highly permeable material intended to lower the groundwater table of an area, and which has an outlet to the surface for the collected groundwater.
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Subsurface Drains means any system of below surface piping and/or highly permeable material intended to lower the groundwater table of an area, and which has an outlet to the surface for the collected groundwater. A foundation drain is a category of subsurface drain for the purpose of protecting the building foundation.
Sample 1

Examples of Subsurface Drains in a sentence

  • Level spreaders convert concentrated runoff into diffuse flow and release it onto areas stabilized by existing vegetation.• Subsurface Drains.

  • For this reason, we propose to shift the focus from services to activities and cross-classifying the non-citizens workers on the basis of the industry (by ISIC) in which they are employed or to which they provide services..

  • All Subsurface Drains, including Swale Underdrains, curb Underdrains, etc.

  • SD 3.06 Subsurface Drains The effectiveness of subsurface drains used to lower the water table to meet the limitations of these regulations must be demonstrated through one complete wet season, January 1 through April 30, before consideration can be given to an application for an individual sewage disposal system permit unless it can be demonstrated to the Department's satisfaction to be effective.

  • BILL OF QUANTITIES Bill No. 1 Earthworks BILL OF QUANTITIES Bill No. 2 Culverts and Bridges Bill No. 3 Subsurface Drains Item Bill No. 4 Tubewells and Pump-houses Item BILL OF QUANTITIES Bill No. 5 Miscellaneous Items Item 1 Not to exceed 10 % of Bid Price.

  • Sub-surface Drains Sub surface drains shall be of close joined perforated pipes, open jointed unperforated pipes, surrounded by granular material laid in a trench or aggregate drains to drain the pavement courses.

  • Sub-surface Drains may be Outletted through a drop Structure at the ends of the Swale or through a standard tile Outlet.

  • Where seepage areas or seasonally wet areas must be crossed, install subsurface drains and/or geotextile fabric before placing the base material (see Practice 6.81, Subsurface Drains).

  • The language of risk mitigation in the Guiding Principles and the framework of human rights due diligence therefore provide a useful framework for speaking about the processes companies need to undertake to respect human rights.

  • Subsurface Drains -- Subsurface drains shall be installed at a depth of three (3) feet below and one (1) foot behind the back of curb in line with and parallel to the inside face of the curb or along the junction where the face of the concrete curb meets material for the travel surface.

Related to Subsurface Drains

  • Mine drainage means any drainage, and any water pumped or siphoned, from an active mining area or a post-mining area. The abbreviation “ml/l” means milliliters per liter.

  • Soil means all unconsolidated mineral and organic material of any origin.

  • Surface waters means all waters of the state as defined in G.S. 143-212 except underground waters

  • Groundwater means all water, which is below the surface of the ground in the saturation zone and in direct contact with the ground or subsoil.

  • Subsurface tracer study means the release of a substance tagged with radioactive material for the purpose of tracing the movement or position of the tagged substance in the well-bore or adjacent formation.

  • Surface water means all water which is open to the atmosphere and subject to surface runoff.

  • Drainage means the movement of water to a place of disposal, whether by way of the natural characteristics of the ground surface or by artificial means;

  • Surface mining means mining by removing the overburden lying above the natural deposits and excavating directly from the natural deposits exposed, or by excavating directly from deposits lying exposed in their natural state and shall include dredge operations conducted in or on natural waterways or artificially created waterways within the state.

  • Water surface elevation means the height, in relation to the National Geodetic Vertical Datum (NGVD) of 1929, the North American Vertical Datum (NAVD) of 1988, or other datum, where specified, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • Drainage area means a geographic area within which stormwater, sediments, or dissolved materials drain to a particular receiving waterbody or to a particular point along a receiving waterbody.

  • Underground mining means all methods of mining other than surface mining.

  • Surface impoundment or "impoundment" means a facility or part of a facility which is a natural topographic depression, man-made excavation, or diked area formed primarily of earthen materials (although it may be lined with man-made materials), which is designed to hold an accumulation of liquid wastes or wastes containing free liquids, and which is not an injection well. Examples of surface impoundments are holding, storage, settling, and aeration pits, ponds, and lagoons.

  • Water Surface Elevation (WSE means the height, in relation to mean sea level, of floods of various magnitudes and frequencies in the floodplains of coastal or riverine areas.

  • Underground area means an underground room, such as a basement, cellar, shaft or vault, providing enough space for physical inspection of the exterior of the tank situated on or above the surface of the floor.

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

  • drainage work means any construction or reconstruction of or any alteration or addition to, or any work done in connection with a drainage installation but shall not include any work undertaken solely for purposes of repair or maintenance;

  • Area of shallow flooding means a designated AO or AH Zone on a community's Flood Insurance Rate Map (FIRM) with one percent or greater annual chance of flooding to an average depth of one to three feet where a clearly defined channel does not exist, where the path of flooding is unpredictable and indeterminate; and where velocity flow may be evident. Such flooding is characterized by ponding or sheet flow.

  • Underground injection means the subsurface emplacement of fluids through a bored, drilled or driven well; or through a dug well, where the depth of the dug well is greater than the largest surface dimension. (See also “injection well”.)

  • mine site means the mining lease the accommodation area and other areas provided for the facilities of the Company in the vicinity of the mining lease;

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

  • Excavation means the mechanical removal of earth material.

  • Underground facility means any item which shall be buried or placed below ground for use in connection with the storage or conveyance of water, sewage, electronic, telephone or telegraphic communications, electric energy, oil, gas or other substances, and shall include, but not be limited to pipes, sewers, conduits, cables, valves, lines, wires, manholes, attachments and those portions of poles and their attachments below ground.

  • Flooding means a volume of water that is too great to be confined within the banks or walls of the stream, water body or conveyance system and that overflows onto adjacent lands, thereby causing or threatening damage.

  • Geologically hazardous areas means areas that because of their susceptibility to erosion, sliding, earthquake, or other geological events, are not suited to the siting of commercial, residential, or industrial development consistent with public health or safety concerns.

  • Vegetation means trees, shrubs, nursery stock and other vegetation and includes the limbs or growth of any Vegetation.