13 Terms
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Water
Water is a chemical compound with the chemical formula H20. A water molecule contains one hydrogen atom and two oxygen atoms. Water is a liquid at standard ambient temperature and pressure though it can be a solid (ice)in low temperatures or evaporate into water vapor a higher temperatures.
Industry: Natural environment
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Water
perchloroethylene
Natural environment; Water
a chlorinated solvent commonly used in dry cleaning. Also known as tetrachloroethylene.
static water level
Natural environment; Water
elevation or level of the water table in a well when the pump is not operating; the level or elevation to which water would rise in a tube connected to an artesian aquifer or basin in a conduit under ...
alluvium
Natural environment; Water
deposits of clay, silt, sand, gravel, or other particulate material that has been deposited by a stream or other body of running water in a streambed, on a flood plain, on a delta, or at the base of ...
disinfectant
Natural environment; Water
A chemical or physical process that kills pathogenic organisms in water, air, or on surfaces. Chlorine is often used to disinfect sewage treatment effluent, water supplies, wells, and swimming pools.
impervious
Natural environment; Water
the quality or state of being impermeable; resisting penetration by water or plant roots. Impervious ground cover like concrete and asphalt affects quantity and quality of runoff.
percolating water
Natural environment; Water
Water that passes through rocks or soil under the force of gravity.
steady-state mass balance
Natural environment; Water
the mathematical concept that the sum of upstream pollutant loads, each determined by the product of their concentration times flow, equals a resultant downstream load after mixing.
