Confining layer definition

Confining layer means a stratum of impermeable or distinctly less permeable material stratigraphically adjacent to one or more aquifers.

Confining layer means a geological formation, group of formations, or part of a formation that is capable of limiting fluid movement above an injection zone. It is composed of rock layers that are impermeable or distinctly less permeable than the injection zone beneath it. There may be multiple confining layers above an injection zone.

Confining layer means a layer associated with an aquifer that, because of low permeability, does not allow water to move through it perceptibly under head differences occurring in the groundwater system.

Examples of Confining layer in a sentence

• To find the definitions of other words, see WAC 173-160-111.(1) "Confining layer" or "confining formation" means a layer of low hydraulic conductivity material that significantly limits vertical movement of groundwater.(2) "Environmental investigation well" means a cased hole inten- ded or used to extract a sample or samples of groundwater, vapor, or soil from an underground formation and which is decommissioned immedi- ately after the sample or samples are obtained.

• Confining layer A geological layer or rock unit that is impermeable to fluids.

• The parameters associated with the field and laboratory tests for the boring locations within the pond location have been presented in Table III: Stormwater Management Soil Design Parameters.TABLE IIISTORMWATER MANAGEMENT SOIL DESIGN PARAMETERSCorresponding Soil Boring Test Location* - Confining layer will be directly related to the excavation depth of the proposed pond as the hydraulically restrictive clayey soils will inhibit vertical infiltration of water.

• The outer casing (eight- inch diameter) would extend to a depth of 225 feet and be set into clays of the Lower Kirkwood Confining layer.

• Encrypted message digest (esMD) is attached to the input message (M) and the whole message (M-esMD) is sent to receiver.

More Definitions of Confining layer

Confining layer means that portion of an intervening zone that has sufficient areal extent and integrity to act as an effective impermeable barrier to the vertical migration of gases or other fluids into any strata or zones that contain protected water.

Confining layer or "confining formation" means a layer of low hydraulic conductivity material that significantly limits vertical movement of groundwater.

Confining layer means a layer of natural earth materials having very low hydraulic conductivity that inhibits the movement of water into and out of a water bearing zone. A confining unit may consist of one of more confining layers.

Confining layer means a formation that serves as a barrier between water-, oil-, or gas- bearing formations.

Confining layer means a laterally extensive geologic formation, group of formations, or part of a formation, stratigraphically overlying the sequestration zone that exhibits low permeability and/or high capillary entry-pressure (e.g. a clay-rich shale or mudstone) such that it impedes the upward migration of fluid(s). The “primary confining layer” refers to the confining layer directly above the sequestration zone. “Secondary confining layer” refers to the confining layer directly above the dissipation zone above the storage complex.

Confining layer means all or part of a formation which impedes the flow of ground water from an adjacent aquifer.

Confining layer means a geologic formation which separates aquifers and which consists of material, such as clay or unfractured rock, that does not permit perceptible vertical transmission of water to other aquifers.