Toxic Substances Control Act (TSCA)
A federal law of 1976 to regulate chemical substances or mixtures that may present an unreasonable risk of injury to health or the environment.
Toxic substances (or toxin) are those chemicals or other substances that can cause damage to the health of living organisms.
Toxic substances contain contaminants that can cause sickness or death for living organisms. Toxic is also a classification for hazardous waste.
Agency for Toxic Substances and Disease Registry (ATSDR)-An agency of the Department of Health and Human Services, the Agency for Toxic Substances and Disease Registry is responsible for chemical safety.
The Agency for Toxic Substances and Disease Registry (ATSDR) is a federal public health agency with headquarters in Atlanta, Georgia, and 10 regional offices in the United States.
isms, chemicals, toxic substances, wastes, or wastewater in
a concentration that makes the water unfit for its next
intended use.
Contamination Introduction into water, air and soil of microorganisms, chemicals, toxic substances, wastes, or wastewater in a concentration that makes the medium unfit for its next intended use.
Agency for Toxic Substances and Disease Registry (ATSDR) ATSDR is part of the U.S. Department of Health and Human Services.
TSCA- Toxic Substances Control Act
TSCATS- TSCA Test Submissions Database
TSCC- Toxic Substances Coordinating Committee
TSD- Technical Support Document
TSDF- Treatment, Storage, and Disposal Facility
TSDG- Toxic Substances Dialogue Group ...
To most people not professionally involved in water quality issues, water is either drinkable (technically potable) or contains potentially harmful or toxic substances.
Generally, the overall process of the absorption (uptake) of potentially toxic substances by the body, the distribution of the substances and their metabolites in tissues and organs, their metabolism (biotransformation), ...
These are forms of diffuse pollution caused by sediment, nutrients, organic and toxic substances originating from land use activities which are carried to lakes and streams by surface runoff.
A highly adsorbent form of carbon used to remove odors and toxic substances from liquid or gaseous emissions. In waste treatment it is used to remove dissolved organic matter from waste water.
background level In toxic substances monitoring, the average presence of a substance in the environment, originally referring to naturally occurring phenomena.
PCBs
polychlorinated biphenyls; very persistent, toxic substances, stored in fatty tissue; previously widely used as fire-resistant dielectric fluids in transformers and capacitors; now prohibited ...
Inventory of chemicals produced pursuant to Section 8 (b) of the Toxic Substances Control Act.
Inversion
A layer of warm air that prevents the rise of cooling air and traps pollutants beneath it; can cause an air pollution episode.
It is not only large quantities of toxic substances that contaminate land. Contamination can occur even when small quantities of waste are allowed to seep into the soil over a long period of time.
Nonpoint Source (NPS) Pollution: Forms of pollution caused by sediment, organic and inorganic chemicals, and biological, radiological, and other toxic substances originating from land use activities, ...
The science of poisons and toxic substances occurring in the environment and their effects.
Definition source ...
Clinical Laboratory for Evaluation and Assessment of Toxic Substances
CLEVER
Clinical Laboratory for Evaluation and Validation of Epidemiologic Research ...
Hardness: The concentration of calcium or magnesium in water; affects the availability of nutrients and toxic substances to stream organisms.
Headwaters: Small streams and creeks at the uppermost end of a river system.
2588 (Connelly) Air Toxics "Hot Spots" Information and Assessment Program: A California program (Health and Safety Code Section 44300 et seq.) which requires certain stationary sources to report the type and quantity of specific toxic substances ...
Toxicogenomics: The collection, interpretation, and storage of information about gene and protein activity in order to identify toxic substances in the environment, ...
Bioaccumulation (bioconcentation): A term used to describe a process that occurs when levels of toxic substances increase in an organism over time, due to continued exposure.
According to the federal Agency for Toxic Substances and Disease Registry, the substance is not considered a pollutant per se, as it separates into relatively harmless component elements once released into water or moist soil.
FLY ASH A fine residue, left after trash is burned in an incinerator, which can be carried in the air. It can contain harmful or toxic substances such as dioxins, lead and mercury.
FR Freon.
Woodburning Pollution - air pollution caused by emissions of particulate matter, carbon monoxide, and odorous and toxic substances from woodburning stoves and fireplaces
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In air pollution control, the concentration of air pollutants in a definite area during a fixed period of time prior to the starting up or on the stoppage of a source of emission under control. In toxic substances monitoring, ...
Chronic exposure to PCBs is believed to cause liver damage. It also is known to bioaccumulate in fatty tissues. PCB use and sale was banned in 1979 with the passage of the Toxic Substances Control Act.
the introduction of toxic substances into an ecosystem.
pollution, ecological.
 See also: Toxic, Toxic substance, Water, Waste, Environment
  
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