Groundwater plume definition

Groundwater plume means the extent of groundwater impacted by the release of chemicals of concern.
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Groundwater plume means groundwater that has been polluted by a release and is emanating from a release area and in which one or more substances from such release is present at a concentration above the laboratory reporting limit.
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Groundwater plume means groundwater that has been polluted by a release and in which one or more substances from such release is present at a concentration above the laboratory reporting limit.
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Examples of Groundwater plume in a sentence

  • Groundwater plume loads at the Study Area scale are alsopresented graphically by chemical contaminant group in Figures 6.1-41 through 6.1-45.

  • Groundwater plume loading to the Study Area was more significant historically, prior to institution of groundwater controls.

  • Monitoring data suggests: Groundwater plume is effectively contained Contaminant concentrations are decliningRemarks: Approval was received from the regulators on the Petition for Shutdown since the system met its cleanup goals.

  • The groundwater monitoring strategy includes: • Fluid level gauging• Compliance point monitoring• Groundwater plume monitoring• Corrective action performance monitoring Wells are gauged and sampled as dictated by the approved Corrective Measures Implementation (CMI) Work Plan or Interim Measures (IM) Work Plan.

  • The remedial action implementation for the On-Base Groundwater Landfill 6 Site started in 2008 to address the TCE Groundwater plume.

  • Monitoring data suggests: Groundwater plume is effectively contained Contaminant concentrations are declining Remarks: Freon-11 concentrations have significantly declined to below the capture goal.

  • All of the relevant cases are contrary to today's holding, and in none of them was the Court on a frolic of its own.

  • Groundwater plume modelling was undertaken for the 60-Year ADF (Aqua Earth Consulting, 2014) and the proposed Ash Water Dam Facility located downstream of the Co-Disposal Facility (MWEM, 2019).• No substantial additional negative impacts are expected from the co-disposal of waste on the Co-Disposal Facility and 60-year ADF as the potential groundwater seepage and leachate rate would remain low with the proposed Class C liner system.

  • RDX was also not detected in the upland geologic units north of the Spring 2002 plume, indicating that the Off-Site Groundwater plume did not migrate from the IAAAP facility in groundwater through the glacial till, glacial outwash sands, or bedrock units.

  • Monitoring data suggests: Groundwater plume is effectively contained Contaminant concentrations are decliningRemarks: As of the third quarter of 2015, hexavalent chromium is no longer sampled for in the monitoring wells.


More Definitions of Groundwater plume

Groundwater plume means groundwater that has been polluted by a release and is emanating from a release area and in which one or more substances from such release is present at a
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Related to Groundwater plume

  • 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.

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

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

  • Wetlands or “wetland” means an area that is inundated or saturated by surface water or ground water at a frequency and duration sufficient to support, and that under normal circumstances does support, a prevalence of vegetation typically adapted for life in saturated soil conditions, commonly known as hydrophytic vegetation.

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

  • 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.

  • Underground storage tank or “UST” means any one or combination of tanks (including underground pipes connected thereto) that is used to contain an accumulation of regulated substances, and the volume of which (including the volume of underground pipes connected thereto) is 10 percent or more beneath the surface of the ground. This term does not include any:

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

  • 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.

  • 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.

  • Tanks has the meaning set forth in Section 4.12(b).

  • Contaminate means the addition of sediment, any other pollutant or waste, or any illicit or prohibited discharge.

  • Surface waters means water on the surface of the ground where water does not usually accumulate in ordinary watercourses, lakes, or ponds. This includes any waterborne objects.

  • Invasive plant species means species of plants not historically found in California that spread outside cultivated areas and can damage environmental or economic resources. Invasive species may be regulated by county agricultural agencies as noxious species. Lists of invasive plants are maintained at the California Invasive Plant Inventory and USDA invasive and noxious weeds database.

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

  • Underground storage means storage of gas in a subsurface stratum or formation of the earth.

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

  • Hazardous substance UST system means an UST system that contains a hazardous substance defined in section 101(14) of the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (but not including any substance regulated as a hazardous waste under subtitle C) or any mixture of such substances and petroleum, and which is not a petroleum UST system.

  • 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.

  • 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.

  • Sediment means solid material, mineral or organic, that is in suspension, is being transported, or has been moved from its site of origin by air, water or gravity as a product of erosion.

  • 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.

  • 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;

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

  • Septic tank means a water tight tank designed to receive sewage and to effect the adequate decomposition of organic matter in sewage by bacterial action;

  • Contamination means the presence of, or Release on, under, from or to the environment of any Hazardous Substance, except the routine storage and use of Hazardous Substances from time to time in the ordinary course of business, in compliance with Environmental Laws and with good commercial practice.