Natural filter definition

Natural filter means the material adjacent to the screens in Type II wells which is part of the screened formation and which is relatively free of fine-grained material as a result of well development.
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Examples of Natural filter in a sentence

  • Like a facial pack, masoor dal immerses itself in all dirt and removes dirt by removing it gently.[18] Natural filter Exfoliation is a necessary step in skin care, even if it is excessive or completely overlooked.

  • Natural filter facilities can be sized using one of two methods: a simple sizing method or a hydrologic routing modeling method.

  • Natural filter strips can be applied to impervious areas as noted in Figure 5-3 and to perimeter lots and other areas that will not drain by gravity to other drainage facilities on the site.

  • Natural filter packs may be used in caving formations provided that the native materials do not have significant levels of fines that may accumulate within the well screens.

  • Natural filter plants reduce the hardness of the water by natural means.

  • Natural filter projects offer a means of reducing nitrogen, phosphorus, and sediment loads into the Chesapeake Bay.

Related to Natural filter

  • Natural uranium means uranium with the naturally occurring distribution of uranium isotopes, which is approximately 0.711 weight percent uranium-235, and the remainder by weight essentially uranium-238.

  • HEPA filter means high-efficiency particulate air filters that are rated to achieve a minimum initial particle-removal efficiency of 99.97 per cent using ASTM F 1471– 93 or equivalent standard;

  • Central fill pharmacy means a pharmacy contracting with an originating pharmacy, or having the same owner as an originating phar- macy, that provides centralized prescription filling on behalf of the originating pharmacy pursuant to these rules.

  • SOUND NATURAL TEETH means teeth that: SPECIALTY PRESCRIPTION DRUG is a type of prescription drug listed on our

  • CMSA Financial File means a report substantially in the form of, and containing the information called for in, the downloadable form of the "Financial File" available as of the Closing Date on the CMSA Website, or such other form for the presentation of such information and containing such additional information as may from time to time be approved by the CMSA for commercial mortgage securities transactions generally.

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

  • Natural Boundary means the visible high water mark, or bankfull width, of any lake, river, stream or other body of water where the presence and action of the water are so common and usual, and so long continued in all ordinary years, as to mark on the soil of the bed of the body of water a character distinct from that of its banks, in vegetation, as well as in the nature of the soil itself;

  • Natural gas company ’ means a person engaged in the transportation of natural gas in interstate commerce, or the sale in inter- state commerce of such gas for resale.

  • Natural background means the condition of waters in the absence of man-induced alterations based on the best scientific information available to the Department. The establishment of natural background for an altered waterbody may be based upon a similar unaltered waterbody or on historical pre-alteration data. 62-302.200(15), FAC.

  • Personnel file means, for the purposes of Part III (8VAC20-90-60 et seq.), any and all memoranda, entries or other documents included in the teacher's file as maintained in the central school administration office or in any file regarding the teacher maintained within a school in which the teacher serves.

  • Natural environment means the air, land and water, or any combination or part thereof, of the Province of Ontario; (“environnement naturel”)

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which (1) a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and (2) while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • South Caucasus/Central and South Asian (SC/CASA) state means Armenia, Azerbaijan, Georgia, Kazakhstan, Kyrgyzstan, Pakistan, Tajikistan, Turkmenistan, or Uzbekistan.

  • CREFC® Financial File The data file in the “CREFC® Financial File” format substantially in the form of and containing the information called for therein for the Mortgage Loans, or such other form for the presentation of such information as may be approved from time to time by the CREFC® for commercial mortgage securities transactions generally.

  • Natural resources means all land, fish, shellfish, wildlife, biota,

  • GFR means General Financial Rules

  • Natural Resource or “Natural Resources” shall mean land, fish, wildlife, biota, air, water, ground water, drinking water supplies, and other such resources, belonging to, managed by, held in trust by, appertaining to, or otherwise controlled by the United States or the State.

  • Natural attenuation means a variety of physical, chemical or biological processes that, under favorable conditions, act without human intervention to reduce the mass, toxicity, mobility, volume, or concentration of hazardous substances in the environment. These in situ processes include: Natural biodegradation; dispersion; dilution; sorption; volatilization; and chemical or biological stabilization, transformation, or destruction of hazardous substances. See WAC 173- 340-370(7) for a description of the expected role of natural attenuation in site cleanup. A cleanup action that includes natural attenuation and conforms to the expectation in WAC 173- 340-370(7) can be considered an active remedial measure.

  • National Ambient Air Quality Standards or “NAAQS” means national ambient air quality standards that are promulgated pursuant to Section 109 of the Act, 42 U.S.C. § 7409.

  • International air transportation means transportation by air between a place in the United States and a place outside the United States or between two places both of which are outside the United States.

  • Floodplain or flood-prone area means any land area susceptible to being inundated by water from any source. See "Flood or flooding."

  • Maritime agency services means activities consisting in representing, within a given geographic area, as an agent the business interests of one or more shipping lines or shipping companies, for the following purposes:

  • Expansion to an existing manufactured home park or subdivision means the preparation of additional sites by the construction of facilities for servicing the lots on which the manufactured homes are to be affixed (including the installation of utilities, the construction of streets, and either final site grading or the pouring of concrete pads).

  • Opium poppy means the plant of the species Papaver somniferum L., except its seeds.

  • Flood Boundary and Floodway Map (FBFM means an official map of a community, issued by the FEMA, on which the Special Flood Hazard Areas and the floodways are delineated. This official map is a supplement to and shall be used in conjunction with the Flood Insurance Rate Map (FIRM).

  • Environmental Management System means an environmental management system or plan of management to address all environmental risks and to ensure compliance with all Environmental Laws and licences;