Ground water under the direct influence of surface water definition

Ground water under the direct influence of surface water means any water beneath the surface of the ground with:
Sample 1Sample 2Sample 3
Ground water under the direct influence of surface water means any water beneath the surface of the ground with significant occurrence of insects or other macroorganisms, algae, or large diameter pathogens such as Giardia lamblia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions. Direct influence must be determined for individual sources in accordance with criteria established by the Division. The Division determination of direct influence may be based on site-specific measurements of water quality and/or documentation of well construction characteristics and geology with field evaluation.
Sample 1Sample 2Sample 3
Ground water under the direct influence of surface water means any water beneath the surface of the ground with significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens such as giardia lamblia or cryptosporidium. Ground water under the direct influence of surface water also means significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions.
Sample 1Sample 2Sample 3

Examples of Ground water under the direct influence of surface water in a sentence

  • Ground water under the direct influence of surface water (GUDI) is a well found to be influenced by surrounding surface water bodies, and is classified according to site specific water quality measurements, according to the Surface Water Treatment Rule.

  • Ground water under the direct influence of surface water (GWUDI) means any water beneath the surface of the ground with significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens such as Giardia lamblia or Cryptosporidium or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions.

  • Ground water under the direct influence of surface water (GWUDI) - a ground water source that has been designated as being under the direct influence of surface water due to concerns about the well isolation, well construction, and/or bacterial contamination.

  • The definition of GWUDI is (40 CFR141.2): Ground water under the direct influence of surface water (GWUDI) means any water beneath the surface of the ground with significant occurrence of insects or other macro- organisms, algae, or large-diameter pathogens such as Giardia lamblia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions.

  • Ground water under the direct influence of surface water means any water beneath the surface of the ground with significant occurrence of insects or other macroorganisms, algae, or large- diameter pathogens such as Giardia lamblia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions.

  • Table 2 to Paragraph (a)(4)(i)(B)—Monitoring Frequency by Contaminant and Water Source Types ContaminanttypeWatersourcetypeTimeframeFrequency1List 1 Cyanotoxins ChemicalsSurface water or Ground water under the direct influence of surface water (GWUDI)March‐ NovemberYou must monitor twice a month for four consecutive months (total of eight sampling events).


More Definitions of Ground water under the direct influence of surface water

Ground water under the direct influence of surface water means ground water which has:
Sample 1Sample 2Sample 3
Ground water under the direct influence of surface water means any water beneath the surface of the ground with (1) significant occurrence of insects or other macroorganisms, algae, or other large- diameter pathogens such as Giardia lamblia, or (2) significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions. Direct influence must be determined for individual sources.
Sample 1
Ground water under the direct influence of surface water or “GWUDI” means any water beneath the surface of the ground with either a significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens such as giardia lamblia or Cryptosporidium, or significant and relatively rapid shifts in water characteristics such as turbidity, temperature, conductivity, or pH which closely correlate to climatological or surface water conditions. The department determination of direct influence may be based on site-specific measurements of water quality or documentation of well construction characteristics and geology, or both, which may include a field evaluation;
Sample 1Sample 2Sample 3
Ground water under the direct influence of surface water means any water beneath the surface of the ground with (1) significant occurrence of insects or other macroorganisms, algae, or large-diameter pathogens such as Giardia lamblia, or (2) (for subpart H systems serving at least 10,000 people only) Cryptosporidium, or
Sample 1

Related to Ground water under the direct influence of surface water

  • Navigable waters ’ means the waters of the United States, including the territorial sea;

  • Underground source of drinking water means an aquifer or its portion:

  • Standard Methods for the Examination of Water and Wastewater means the most recent edition of Standard Methods for the Examination of Water and Wastewater published jointly by the American Public Health Association, the American Waterworks Association and the Water Environment Federation;

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

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

  • Water Surface Elevation (WSE means the height, in relation to NAVD 1988, of floods of various magnitudes and frequencies in the floodplains of riverine areas.

  • 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.

  • Pervious surface means an area that releases as runoff a small portion of the precipitation that falls on it. Lawns, gardens, parks, forests or other similar vegetated areas are examples of surfaces that typically are pervious.

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

  • Subsurface Borings and Testing means borings, probings and subsurface explorations, laboratory tests and inspections of samples, materials and equipment; appropriate professional interpretations of all the foregoing.

  • Excavation zone means the volume containing the tank system and backfill material bounded by the ground surface, walls, and floor of the pit and trenches into which the UST system is placed at the time of installation.

  • 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.

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

  • Water user means a person, corporation, or other entity having a right to divert water from the Bear River for beneficial use;

  • 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.

  • Wildlife habitat means a surface water of the state used by plants and animals not considered as pathogens, vectors for pathogens or intermediate hosts for pathogens for humans or domesticated livestock and plants.

  • 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.

  • Combined sewer overflow means the discharge of untreated or

  • 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.

  • Water Main means (subject to Section 219(2) of the 1991 Act) any pipe, not being a pipe for the time being vested in a person other than the water undertaker, which is used or to be used by a water undertaker or licensed water supplier for the purpose of making a general supply of water available to customers or potential customers of the undertaker or supplier, as distinct from for the purpose of providing a supply to particular customers;

  • Water conservation means the preservation and careful management of water resources.

  • 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.

  • Ground water means water below the land surface in a zone of saturation.

  • Water closet means a closet which has a separate fixed receptacle connected to a drainage system and separate provision for flushing from a supply of clean water either by the operation of mechanism or by automatic action;

  • waste water means used water containing substances or objects that is subject to regulation by national law.

  • Loading Zone means a parking stall which is set aside for use by commercial vehicles if there is a sign referable to that stall marked ‘Loading Zone’;