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VII. Glossary and Acronyms <br /> Transformation: incineration,pyrolysis,distillation,gasification,or biological conversion of <br /> solid waste. <br /> Vadose Zone: sub-surface zone between the ground surface and the groundwater level (water <br /> table)within the unsaturated zone. Soil voids in this zone contain air and water. <br /> Waste Celt: at a landfill,compacted solid wastes(generally the amount disposed of in one day) <br /> covered with a thin,continuous layer of soil. <br /> Waste Discharge Requirements(WDR): the permit issued by Regional Water Quality Control <br /> Board for the discharge of waste to land(i.e. a landfill). <br /> Waste Management Unit: area of land,or a portion of a waste management facility, at which <br /> waste is discharged. The term includes containment features and ancillary features for <br /> precipitation and drainage control and monitoring, and can be applied to landfills or surface <br /> impoundments. <br /> Waste Shed: area in which a waste stream is generated. <br /> Wastestream: the body of material composed of discards,by-products,and obsolete objects that <br /> is generated by industry,government,and the private commercial and residential sectors. The <br /> "wastestream" does not always end up wasted per se in landfills or incinerators: some of it will <br /> be recycled,composted,salvaged for re-use,or sent to waste-to-energy facilities. <br /> Wetland: those areas that are inundated or saturated by surface or ground water at a frequency <br /> and duration sufficient to support, and that under normal circumstances do support,a prevalence <br /> of vegetation typically adapted for life in saturated soil conditions. Wetlands include,but are not <br /> limited to,swamps,marshes,bogs,and similar areas. [as defined by the U.S. Army Corps of <br /> Engineers and the U.S.EPA] <br /> Winter Cover: a six-inch-thick soil layer applied during the winter to provide a surface suitable <br /> for truck travel. <br /> Working Face: the area where daily-disposal operations are conducted at a landfill: it is usually <br /> on a slope,where waste is deposited and compacted with landfill equipment. As used here,the <br /> total area of exposed refuse. <br /> VH.8 <br />