groundwater

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groundwater

Water below the earth's surface, saturating soil and rock at the level of the water table and below. It supplies approximately 35 percent of the drinking water in the country and, as such, is a source of much concern for the Environmental Protection Agency. If one purchases a property with contaminants, and those contaminants have leached into the groundwater, then remediation will usually be required before development can proceed.

References in periodicals archive ?
Ian Clark (University of Ottawa) followed Raven with a presentation of his group's research on the porewater chemistry of the proposed Bruce DGR.
An increase in acid-extractable Al does not necessarily imply an increase in porewater soluble Al, because recovery in an acid digest is not the same thing as water solubility.
As such, a combination of factors, such as soil porewater chemical composition, time, compressive pressure, and moisture content are suspected to induce the changes in hydraulic conductivity observed between the PASS and acidic horizon.
A 41-year-old male soil scientist sampled submerged sediments and porewater for dinoflagellate DNA and pollutants on 19-20 July 1999 in the Chesapeake Bay, Pocomoke River, and Bulbeggar Creek in Virginia, where a 4-day fish kill attributed to TPC activity began on 24 July 1999, and in surrounding areas (Table 1).
We believe that the anomalously high soil solution P in the subsoil at FTC despite the very high PBI is indicative of a lack of equilibrium between the soil matrix and porewater, caused by macropore bypass flow either from P-enriched surface soil and/or by lateral transport of P-enriched GW.
The measured porewater sulfate concentrations in McLeods Creek A ASS material of ~1500 mg S[O.
The carbonate forms from microbial degradation of hydrocarbons that produces excess CO2 in the sediment porewater.
Sulfide tolerance of four marine species used to evaluate sediment and porewater toxicity.
Mosier AR, Chapman SL, Freney JR (1989) Determination of dinitrogen emission and retention in floodwater and porewater of a lowland rice field fertilized with 15N-urea.
In the study area, measurements of hydraulic conductivity, subsurface flux, porewater chemistry, and gas permeability using the UFA method have allowed detailed mapping of the hydrostratigraphy, subsurface flux or recharge, porewater chemistry, and vapour diffusivity.
Implications of the distribution of dD in porewaters for groundwater flow and the timing of geologic events in a thick aquitard system.
Monbet P, McKelvie ID, Worsfold PJ (2008) Combined gel probes for the in situ determination of dissolved reactive phosphorus in porewaters and characterization of sediment reactivity.