Deep trench definition

Deep trench means any excavation into the earth that is longer than it is wide, extends into a permeable soil stratum, but not into a subterranean water-bearing stratum, is intended to accept and dispose of septic tank effluent, and the bottom of which terminates more than five feet below ground surface.
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Deep trench means a soil absorption system that uses a trench, the vertical walls of which form the infiltrative surface area;
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Deep trench means a conventional soil absorption system that
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Examples of Deep trench in a sentence

  • Deep trench drains can also be used for the purpose of sub-surface drainage.

  • Deep trench works should be carried out as per the instructions received from the PSC.

  • Deep trench isolation allows the differential fingers to be physi- cally connected but electrically isolated, as shown in Fig.

  • Deep trench bunding was used to block large ditch and small ‘mole drains’ across this area, which helped hold water in the compartment.

  • Deep trench excavation was carried out by means of a Bauer Slurry Trench Cutter BC40 (see Figure 8).

  • Deep trench in all kinds of soil for laying of HDPE/spun concrete pipe for underground cable crossing.


More Definitions of Deep trench

Deep trench means a trench having perforated pipe in which the trench side wall and bottom area are used to calculate the absorptive area in the system design. At least 2 inches of gravel/stone covers the pipe and extends throughout the depth of absorptive side wall to the trench bottom.
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Related to Deep trench

  • Trench means 1. below-grade soil treatment area consisting of a shallow excavation with a width of 3 feet or less containing distribution media and one lateral; and 2. excavation for placement of piping or installation of electrical wire or conduit.

  • high voltage means the classification of an electric component or circuit, if its working voltage is > 60 V and ≤ 1500 V DC or > 30 V and ≤ 1000 V AC root mean square (rms).

  • Deep well means a well located and constructed in such a manner that there is a continuous layer of low permeability soil or rock at least 5 feet thick located at least 25 feet below the normal ground surface and above the aquifer from which water is to be drawn.

  • PNode has the meaning set forth in the CAISO Tariff.

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • Uppermost aquifer means the geologic formation nearest the natural ground surface that is an aquifer, as well as lower aquifers that are hydraulically interconnected with this aquifer within the facility's property boundary.

  • Filtration means a process for removing particulate matter from water by passage through porous media.

  • Drywell means an unlined or partially lined underground pit (regardless of geometry) into which drainage from roofs, basement floors, water softeners or other non-wastewater sources is discharged and from which the liquid seeps into the surrounding soil.

  • Filter means material placed in the useful beam to preferentially absorb selected radiations.

  • Conventional filtration treatment means a series of processes including coagulation, flocculation, sedimentation, and filtration resulting in substantial particulate removal.

  • Membrane filtration means a pressure or vacuum driven separation process in which particulate matter larger than one micrometer is rejected by an engineered barrier, primarily through a size exclusion mechanism, and which has a measurable removal efficiency of a target organism that can be verified through the application of a direct integrity test. This definition includes the common membrane technologies of microfiltration, ultrafiltration, nanofiltration, and reverse osmosis.

  • Stack means any point in a source designed to emit solids, liquids, or gases into the air, including a pipe or duct but not including flares.

  • Attenuation block means a block or stack, having dimensions 20 centimeters by 20 centimeters by 3.8 centimeters, of type 1100 aluminum alloy or other materials having equivalent attenuation.

  • Cannabinoid extract means a substance obtained by separating cannabinoids from marijuana by:

  • Gate means any structure or device located to limit or prohibit access or entry to any cave.

  • High voltage bus means the electrical circuit, including the coupling system for charging the REESS, that operates on a high voltage.

  • Valve means a device used to control the flow of water in the irrigation system.

  • Sludge dryer means any enclosed thermal treatment device that is used to dehydrate sludge and that has a maximum total thermal input, excluding the heating value of the sludge itself, of 2,500 Btu/lb of sludge treated on a wet-weight basis.

  • Polystyrene foam adhesive means an aerosol adhesive designed to bond polystyrene foam to substrates.

  • Planned External Financed Generation Capacity Resource means a Planned External Generation Capacity Resource that, prior to August 7, 2015, has an effective agreement that is the equivalent of an Interconnection Service Agreement, has submitted to the Office of the Interconnection the appropriate certification attesting achievement of Financial Close, and has secured at least 50 percent of the MWs of firm transmission service required to qualify such resource under the deliverability requirements of the Reliability Assurance Agreement.

  • Electrical Fitter means an employee who is mainly employed in the workshops manufacturing, fitting, and repairing electrical instruments, machines, and apparatus. Electrical fitting in this definition shall include armature and transformer winding, and people solely engaged in making and repairing instruments. The legitimate possession of a certificate of competency in this particular class of work issued by the Electrical Licensing Board under the Electricity Act 1994 shall be recognised as proof of efficiency.

  • Nematode means invertebrate animals of the phylum nemathelminthes, and class nematoda, i.e., unsegmented round worms with elongated, fusiform, or saclike bodies covered with cuticle, and inhabiting soil, water, plants, or plant parts, may also be called nemas or eelworms.

  • Node means an area designated by the State Planning Commission concentrating facilities and activities which are not organized in a compact form.

  • borehole means a hole sunk into the earth for the purpose of locating, abstracting or using subterranean water and includes a spring;

  • Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

  • Hydraulic fracturing means the fracturing of underground rock formations, including shale and non-shale formations, by manmade fluid-driven techniques for the purpose of stimulating oil, natural gas, or other subsurface hydrocarbon production.