A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
Waste Analysis Plan.
unwanted materials left over from manufacturing processes, refuse from places of human or animal habitation.
waste load allocation
the maximum load of pollutants each discharger of waste is allowed to release into a particular wasteway. Discharge limits are usually required for each specific water quality criterion being, or expected to be, violated.
waste treatment plant
a facility containing a series of tanks, screens, filters and other processes by which pollutants are removed from water.
waste treatment stream
the continuous movement of waste from generator to treater and disposer.
any water that has been released from the purpose for which it was intended to be used.
wastewater operations and maintenance
actions taken after construction to assure that facilities constructed to treat wastewater will be properly operated, maintained, and managed to achieve efficiency levels and prescribed effluent levels in an optimum manner.
those materials which are carried by or dissolved in a water stream for disposal.
wastewater treatment tank
means a tank that is designed to receive and treat an influent wastewater through physical, chemical, or biological methods.
waterborne disease outbreak
means the significant occurrence of acute infectious illness, epidemiologically associated with the ingestion of water from a public water system which is deficient in treatment, as determined by the appropriate local or State agency.
a process of displacing oil from underground formations with water and returning it to the surface for recovery.
instantaneous surges of water pressure caused by sudden interruptions in water flow in pipe or tank systems.
the addition of enough harmful or objectionable material to damage water quality.
any process that involves removing or reducing the level of suspended or dissolved contaminants from a water supply.
water quality criteria
the levels of pollutants that affect use of water for drinking, swimming, raising fish, farming or industrial use.
water quality standard
a management plan that considers, 1) what water will be used for 2) setting levels to protect those uses 3) implementing and enforcing the water treatment plans and 4) protecting existing high quality waters.
describes a material that reacts with water to release a flammable gas or to present a health hazard.
water recirculation or recycling
volume of water already used for some purpose in the plant which is returned with or without treatment to be used again in the same or another process.
the land area that drains into a stream.
to exchange sodium for the harness in water by ion exchange. The removal of calcium and magnesium, the ions which are the principle cause of hardness, from water.
the maximum concentration of a chemical compound which can result when it is dissolved in water. If a substance is water soluble it can very readily disperse through the environment.
a person who owns or operates a public water system.
water supply system
the collection, treatment, storage and distribution of potable water from source to consumer.
the level of ground water.
the land area that drains into a stream.
total volume of water applied to various uses in the plant. It is the sum of water recirculation and water withdrawal.
(abbr.) weakly basic anion resin.
Waste Discharge Report.
Distribution Register of Organic Pollutants in Water.
the equivalent of weakly acidic or weakly basic resins not capable of splitting neutral salts.
Workplace Environmental Exposure Level Guides are established by the AIHA (American Industrial Hygiene Association) WEEL Committee for substances which do not have exposure guidelines established by other organizations [see TLVs]. All WEELs are expressed as time-weighted average (TWA) concentrations; however, different time periods are specified depending on the properties of the material.
weight of evidence
an EPA classification system for characterizing the extent to which the available data indicate that an agent is a human carcinogen.
solids content based on weight.
a spillover device used to measure or control water flow.
a bored, drilled, or driven shaft, or a dug hole, whose depth is greater than the largest surface dimension and whose purpose is to reach underground water supplies or oil, or to store or bury fluids below ground.
the subsurface emplacement of fluids in a well.
a watertight and gastight seal installed in a bore hole or well to prevent movement of fluids.
Water Enforcement National Data Base.
Water Engineering Research Laboratory.
Waterways Experiment Station.
Waste Extraction Test.
an area that is regularly saturated by surface or ground water and subsequently is characterized by a prevalence of vegetation that is adapted for life in saturated soil conditions. Examples include: swamps, bogs, fens, marshes, and estuaries.
cooking liquor from the kraft pulping process produced by recausticizing green liquor with lime.
the filtrate from a paper-or board-forming machine, usually recycled for density control.
Workplace Hazardous Materials Information System. A Canadian nationwide system to provide information to workers on hazardous materials used in the workplace through the use of MSDSs.It is the Canadian counterpart of the OSHA Hazard Communication Standard, but has different provisions and interpretations.
an area designated for the protection of wild animals, within which hunting and fishing are either prohibited or strictly controlled.
World Industry Conference on Environmental Management.
Woman with Infant Children.
Waste Load Allocation/Total Maximum Daily Load.
Waste Materials Management Act.
wood-burning stove pollution
air pollution caused by emissions of particulate matter, carbon monoxide, total suspended particulates, and polycyclic organic matter from wood- burning stoves.
working level (WL)
a unit of measure for documenting exposure to radon decay products. One working level is equal to approximately 200 picocuries per liter.
working level month (WLM)
a unit of measure used to determine cumulative exposure to radon.
Water Pollution Control Federation.
Water Quality Act of 1987.
Water Quality Management Plan.
Water Resources Council.
Water Resources Development Act.
Water Soluble Fraction.
Wild and Scenic Rivers Act.
What You See is What You Get.