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Terms of Environment X Xenobiota: Any biotum displaced from its normal habitat; a chemical foreign to a biological system. Y Yard Waste: The part of solid waste composed of grass clippings, leaves, twigs, branches, and other garden refuse. Yellow-Boy: Iron oxide flocculant (clumps of solids in waste or water); usually observed as orange-yellow deposits in surface streams with excess iron content. (See: floc, flocculation.) Yield: The quantity of water (expressed as a rate of flow or total quantity per year) that can be collected for a given use from surface or groundwater sources. Z Zero Air: Atmospheric air purified to contain less than 0.1 ppm total hydrocarbons.
SOURCE URL: http://www.epa.gov/OCEPAterms |
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