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Glossary
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
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| Acute Exposure |
A short-term exposure usually occurring at high concentration. |
| Acute Health Effect |
An effect that develops either immediately or a short time after exposure. |
| Adjuvant |
A substance added to a vaccine to improve the immune response so that less vaccine is needed to provide protection. |
| Affected |
Persons, baggage, cargo, containers, conveyances, goods, postal parcels or human remains that are infected or contaminated, or carry sources of infection or contamination, so as to constitute a public health risk;
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| Affected Area |
A geographical location specifically for which health measures have been recommended by WHO under these Regulations;
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| Airborne Particulates |
Total suspended particulate matter found in the atmosphere as solid particles or liquid droplets. Chemical composition of particulates varies widely, depending on location and time of year. Sources of airborne particulates include: dust, emissions from industrial processes, combustion products from the burning of wood and coal, combustion products associated with motor vehicle or non-road engine exhausts, and reactions to gases in the atmosphere. |
| Aircraft |
An aircraft making an international voyage; |
| Airport |
Any airport where international flights arrive or depart |
| Antibiotic |
A substance produced by bacteria or fungi that destroys or prevents the growth of other bacteria and fungi.
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| Antibody |
A protein produced by the body's immune system in response to a foreign substance (antigen). Our bodies fight off an infection by producing antibodies. An antibody reacts specifically with the antigen that triggered its formation and its function is to inactivate the antigen. |
| Antidote |
A remedy or other agent to counteract the effects of a poison. |
| Antigen |
Any foreign substance, usually a protein, that stimulates the body's immune system to produce antibodies. (The name antigen reflects its role in stimulating an immune response - antibody generating.) |
| Antiviral |
Drug that are used to prevent or cure a disease caused by a virus, by interfering with the ability of the virus to multiply in number or spread from cell to cell. |
| Arrival
of a Conveyance
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- In the case of a seagoing vessel, arrival or anchoring in the defined area of a port;
- In the case of an aircraft, arrival at an airport;
- In the case of an inland navigation vessel on an international voyage, arrival at a point of entry;
- In the case of a train or road vehicle, arrival at a point of entry;
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| Ash |
The mineral content of a product remaining after complete combustion.
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| Assay |
A test for a specific chemical, microbe, or effect. |
| Asymptomatic |
Presenting no symptoms of disease.
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| Avian Flu |
A highly contagious viral disease with up to 100% mortality in domestic fowl caused by influenza A virus subtypes H5 and H7. |
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| Baggage |
The personal effects of a traveler; |
| Bacteria |
(Singular: bacterium) Microscopic living organisms that can aid in pollution control by metabolizing organic matter in sewage, oil spills or other pollutants. However, bacteria in soil, water or air can also cause human, animal and plant health problems.
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| Bactericide |
A pesticide used to control or destroy bacteria, typically in the home, schools, or hospitals. |
| Biohazardous Infectious Material |
A material that contains organisms and the toxins produced by these organisms that have been shown to cause disease or are believed to cause disease in either humans or animals. |
| Biological Contaminants |
Living organisms or derivates (e.g. viruses, bacteria, fungi, and mammal and bird antigens) that can cause harmful health effects when inhaled, swallowed, or otherwise taken into the body.
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| Biological Product |
A virus, therapeutic serum, toxin, antitoxin, vaccine, blood, blood component or derivative, allergenic product, or analogous product used in the prevention, diagnosis, treatment, or cure of diseases in humans or animals.
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| Blood Products |
Any product derived from human blood, including but not limited to blood plasma, platelets, red or white corpuscles, and derived licensed products such as interferon. |
| Blackwater |
Water that contains animal, human, or food waste.
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| Boiling Point |
The temperature at which a liquid changes from a liquids to a gas, at normal atmospheric pressure. |
| Bulk Packaging |
A packaging, other than a vessel or a barge, including a transport vehicle or freight container, in which hazardous materials are loaded with no intermediate form of containment and which has:
- A maximum capacity greater than 450 L (119 gallons) as a receptacle for a liquid;
- A maximum net mass greater than 400 kg (882 pounds) and a maximum capacity greater than 450 L (119 gallons) as a receptacle for a solid; or
- A water capacity greater than 454 kg (1000 pounds) as a receptacle for a gas as defined in 49 CFR 173.115.
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| Carcinogens |
Agents/compounds that may induce cancer in humans. |
| Cargo |
Goods carried on a conveyance or in a container; |
| Carrier |
A bearer and transmitter of a agent capable of causing infectious disease. An asympotomatic carrier shows no symptoms of carrying an infectious agent.
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| CAS Registry Number |
a number assigned to a material by the Chemical Abstracts Service (CAS) to provide a single unique identifier. |
| Category A Infectious Substances |
An infectious substance in a form capable of causing permanent disability or life-threatening or fatal disease in otherwise healthy humans or animals when exposure to it occurs. A Category A infectious substance must be assigned to identification number UN 2814 (causing disease in human or both human and animal) or UN 2900 (causing disease in animal only). |
| Category B Infectious Substances |
An infectious substance that is not in a form generally capable of causing permanent disability or life-threatening or fatal disease in otherwise healthy humans or animals when exposure to it occurs. This includes Category B infectious substances transported for diagnostic or investigational purposes. A Category B infectious substance must be described as “Biological substance, Category B” and assigned identification number UN 3373. This does not include regulated medical waste, which must be assigned identification number UN 3291. |
| Case Classification |
- Suspect – Animal with clinical signs, which may be consistent with an FAD/EDI.
- Presumptive positive (Index case) - Animal with clinical signs consistent with FAD/EDI plus the following: 1) sample is positive; 2) other epidemiological information is indicative of the FAD/EDI.
- Presumptive positive (Secondary case) -- Animal with clinical signs consistent with FAD/EDI plus one or both of the following: 1) sample ispositive; 2) other epidemiological information is indicative of the FAD/EDI.
- Confirmed positive – Agent is isolated and identified Case Priority Designation - Indicates APHIS response levels, sample handling and testing protocols. Designated 1 to 3 for investigations.
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| Chemical Formula |
Sometimes called the molecular formula, indicates the elements that make up a chemical. |
| Chemical Name |
A proper scientific name for the active ingredient of a product. |
| Chemtrec |
The industry-sponsored Chemical Transportation Emergency Center; provides information and/or emergency assistance to emergency responders. |
| CERCLA Hazardous Substances |
Substances or pollutants that pose "imminent and substantial danger to public health and welfare or the environment. It is defnined under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), or known as the Superfund law. The term "pollutant or contaminant" includes, but is not limited to, any element, substance, compound or mixture, including disease-causing agents, which after release in the environment and upon exposure, ingestion, inhalation, or assimilation into any organism, will likely cause death, disease, behavioral abnormalities, cancer, genetic mutations, physiological malfunctions (including reproductive), or physical deformations in such organisms or their offspring. |
| Chief Veterinary Officer (CVO) |
The Chief Veterinary Officer of the United States is usually the Deputy Administrator of Veterinary Services Emergency Management Leadership Team (EMLT) – consists of VS leaders responsible for animal health emergency management.
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| Chronic Exposure |
A long-term exposure, usually occurring at low concentrations.
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| Chronic Health Effects |
An effect that appears a long time after exposure. |
| Clade |
A group of organisms, such as a species, whose members share homologous features derived from a common ancestor. The avian virus H5N1 clade 1 includes human and bird isolates from Vietnam, Thailand, Cambodia, Laos, and Malaysia. Clade 2 viruses have been identified in bird isolates from China, Indonesia, Japan, and South Korea. |
| Code of Federal Regulations (CFR) |
Document that codifies all rules of the executive departments and agencies of the federal government. It is divided into fifty volumes, known as titles. Title 40 of the CFR (referenced as 40 CFR) lists all environmental regulations. |
| Coefficient of Oil/Water Distribution |
The ratio of the solubility of the chemical in an oil to its solubility in water. |
| Coliform Index |
A rating of the purity of water based on a count of fecal bacteria.
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| Coliform Organism |
Microorganisms found in the intestinal tract of humans and animals. Their presence in water indicates fecal pollution and potentially adverse contamination by pathogens. |
| Collector |
Public or private hauler that collects nonhazardous waste and recyclable materials from residential, commercial, institutional and industrial sources. (See: hauler.) |
| Competent Authority |
An authority responsible for the implementation and application of health measures under these Regulations;
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| Combustible Liquid |
A liquid which has a flash point above 37.8 C.
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| Compressed Gas |
A material which is a gas at normal room temperature (20 C) and pressure but is packaged as a pressurized gas, dissolved gas or gas liquefied by compression or refrigeration. |
| Conditionally Exempt Generators (CE) |
Persons or enterprises which produce less than 220 pounds of hazardous waste per month. Exempt from most regulation, they are required merely to determine whether their waste is hazardous, notify appropriate state or local agencies, and ship it by an authorized transporter to a permitted facility for proper disposal. (See : small quantity generator.) |
| Contingency Plan |
A document setting out an organized, planned, and coordinated course of action to be followed in case of a fire, explosion, or other accident that releases toxic chemicals, hazardous waste, or radioactive materials that threaten human health or the environment. (See: National Oil and Hazardous Substances Contingency Plan.) |
| Contagious |
A contagious disease is easily spread from one person to another by contact with the infectious agent that causes the disease. The agent may be in droplets of liquid particles made by coughing or sneezing, contaminated food utensils, water or food. |
| Container |
An article of transport equipment :
- of a permanent character and accordingly strong enough to be suitable for repeated use;
- specially designed to facilitate the carriage of goods by one or more modes of transport, without intermediate reloading;
- fitted with devices permitting its ready handling, particularly its transfer from one mode of transport to another; and
- specially designed as to be easy to fill and empty;
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| Condensation |
The process of reducing from one form to another denser form such as steam to water. |
| Container Loading Area |
A place or facility set aside for containers used in international traffic;
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| Contamination |
The presence of an infectious or toxic agent or matter on a human or animal body surface, in or on a product prepared for consumption or on other inanimate objects, including conveyances, that may constitute a public health risk;
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| Controlled Products |
Under the Controlled Products Regulation, a controlled product is defined as a material, product or substance which is imported or sold in Canada and meets the criteria for one or more of the following classes: -
- Class A - Compressed Gas
- Class B - Flammable and Combustible Material
- Class C - Oxidizing Material
- Class D - Poisonous and Infectious Material
- Class E - Corrosive Material
- Class F - Dangerously Reactive Material
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| Conveyance |
An aircraft, ship, train, road vehicle or other means of transport on an international voyage;
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| Conveyance Operator |
A natural or legal person in charge of a conveyance or their agent. |
| Corrosive Material |
A material that can attack (corrode) metals or cause permanent damage to human tissues such as skin and eyes on contact. |
| Cradle-to-Grave |
A procedure in which hazardous materials are identified and followed as they are produced, treated, transported, and disposed of by a series of permanent, linkable, descriptive documents (e.g. manifests). Commonly referred to as the cradle-to-grave system.
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| Crew |
Persons on board a conveyance who are not passengers. |
| Criteria |
Descriptive factors taken into account by EPA in setting standards for various pollutants. These factors are used to determine limits on allowable concentration levels, and to limit the number of violations per year. When issued by EPA, the criteria provide guidance to the states on how to establish their standards. |
| Cryogenics |
Materials which exist at extremely low temperatures, such as liquid nitrogen. |
| Cubic Feet Per Minute (CFM) |
A measure of the volume of a substance flowing through air within a fixed period of time. With regard to indoor air, refers to the amount of air, in cubic feet, that is exchanged with outdoor air in a minute's time; i.e. the air exchange rate. |
| Culture |
The result of a process by which pathogens are intentionally propagated by use of ideal conditions, including temperature, environment, and nutrient-based propagation media. In the final rule of 49CFR 173, 174, cultures are prepared for the intentional generation of pathogens and does not include patient specimens intended for diagnostic or clinical purposes. |
| Cultures and Stocks |
A material containing a RG 2, 3, or 4 infectious substance prepared and maintained for growth and storage.
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| Dangerously Reactive Materials |
Materials that may undergo vigorous condensation, decomposition or polymerization. They may react violently under conditions of shock or increase in pressure or temperature. They may also react vigorously with water or water vapor to release a toxic gas. |
| Decomposition |
The breakdown of a substance, often due to heat, decay or other effect, with the release of other compounds such as vapors or gases that may be flammable or toxic.
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| Decontamination |
A procedure whereby health measures are taken to eliminate an infectious or toxic agent or matter on a human or animal body surface, in or on a product prepared for consumption or on other inanimate objects, including conveyances, that may constitute a public health risk.
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| Density |
The weight of a material in a given volume. It is usually given in grams per millilitre (g/ml). |
| Departure |
For persons, baggage, cargo, conveyances or goods, the act of leaving a territory.
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| Deratting |
The procedure whereby health measures are taken to control or kill rodent vectors of human disease present in baggage, cargo, containers, conveyances, facilities, goods and postal parcels at the point of entry.
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| Dermal Absorption/Penetration |
Process by which a chemical penetrates the skin and enters the body as an internal dose. |
| Dermal Exposure |
Contact between a chemical and the skin. |
| Destination Facility |
The facility to which regulated medical waste is shipped for treatment and destruction, incineration, and/or disposal. |
| Destruction and Removal Efficiency (DRE) |
A percentage that represents the number of molecules of a compound removed or destroyed in an incinerator relative to the number of molecules entering the system (e.g. a DRE of 99.99 percent means that 9,999 molecules are destroyed for every 10,000 that enter; 99.99 percent is known as "four nines." For some pollutants, the RCRA removal requirement may be as stringent as "six nines").
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| Destruction Facility |
A facility that destroys regulated medical waste. |
| Detergent |
Synthetic washing agent that helps to remove dirt and oil. Some contain compounds, which kill useful bacteria and encourage algae growth when they are in wastewater that reaches receiving waters. |
| Diagnostic Specimen |
Any human or animal material, other than a RG 4 infectious substance, being transported for diagnostic or investigational purposes, but excluding live infected humans or animals. |
| Dilution Ventilation |
Dilution of contaminated air with uncontaminated air in a general area, room or building for the purposes of health hazard or nuisance control, and/or for heating and cooling. |
| Director-General |
The Director-General of the World Health Organization. |
| Disease |
An illness or medical condition, irrespective of origin or source, that presents or could present significant harm to humans.
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| Disinfection |
The procedure whereby health measures are taken to control or kill infectious agents on a human or animal body surface or in or on baggage, cargo, containers, conveyances, goods and postal parcels by direct exposure to chemical or physical agents.
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| Disinsection |
The procedure whereby health measures are taken to control or kill the insect vectors of human diseases present in baggage, cargo, containers, conveyances, goods and postal parcels.
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| Disinfectant |
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.
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| Disinfectant By-Product |
A compound formed by the reaction of a disinfenctant such as chlorine with organic material in the water supply; a chemical byproduct of the disinfection process. |
| Disposables |
Consumer products, other items, and packaging used once or a few times and discarded. |
| Disposal |
Final placement or destruction of toxic, radioactive, or other wastes; surplus or banned pesticides or other chemicals; polluted soils; and drums containing hazardous materials from removal actions or accidental releases. Disposal may be accomplished through use of approved secure landfills, surface impoundments, land farming, deep-well injection, ocean dumping, or incineration. |
| Disposal Facilities |
Repositories for solid waste, including landfills and combustors intended for permanent containment or destruction of waste materials. Excludes transfer stations and composting facilities. |
| Dose |
Amount of the agent that has entered the body through the various routes of entry. |
| DOT Reportable Quantity |
The quantity of a substance specified in a U.S. Department of Transportation regulation that triggers labeling, packaging and other requirements related to shipping such substances. |
| Drift |
One process in which influenza virus undergoes mutation. The amount of change can be subtle or dramatic, but eventually as drift occurs, a new variant strain will become dominant. This process allows influenza viruses to change and re-infect people repeatedly through their lifetime and is the reason influenza virus strains in vaccine must be updated each year. See shift. |
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| Enzyme |
A substance that speeds up chemical reaction. Every chemical reaction in living organisms is facilitated by an enzyme. |
| Epidemic |
A disease occurring suddenly in a community, region or country in numbers clearly in excess of normal. See pandemic. |
| Environmental Response Team |
EPA experts located in Edison, N.J., and Cincinnati, OH, who can provide around-the-clock technical assistance to EPA regional offices and states during all types of hazardous waste site emergencies and spills of hazardous substances. |
| Epidemiological information |
includes tracing all contacts with affected animals and premises including movements of non-susceptible livestock, humans, fomites, animal products or by-products, crops/grains, feedstuffs.
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| Epidemiology |
Study of the distribution of disease, or other health-related states and events in human populations, as related to age, sex, occupation, ethnicity, and economic status in order to identify and alleviate health problems and promote better health. |
| Evaporation Rate |
The rate at which a liquid changes to vapor at normal room temperature. |
| Explosive (Flammable) Limits |
The lower explosive (flammable) limit (LEL) is the lowest concentration of vapor in air which will burn or explode upon contact with a source of ignition. The upper explosive (flammable) limit (UEL) is the highest concentration of vapor in air which will burn or explode upon contact with a source of ignition. |
| Explosive (Flammable) Range |
The range between the lower explosive limit (LEL) and the upper explosive limit (UEL). |
| Event |
A manifestation of disease or an occurrence that creates a potential for disease; |
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| Feedlot |
A confined area for the controlled feeding of animals. Tends to concentrate large amounts of animal waste that cannot be absorbed by the soil and, hence, may be carried to nearby streams or lakes by rainfall runoff. |
| Flammable |
Any material that ignites easily and will burn rapidly. |
| Flammable Limits |
"See Explosive Limits". |
| Flammable Substance |
One that will readily catch fire and continue to burn in air if exposed to a source of ignition.
- Flammable Aerosol- a material that is packaged in an aerosol container which can release a flammable material.
- Flammable Gas- a gas which can readily catch fire and continue to burn.
- Flammable Liquid - a material that gives off a vapor which can readily catch fire and continue to burn. A flammable liquid has a flashpoint below 37.8 C.
- Flammable Solid- a material which can readily catch fire and continue to burn vigorously and persistently. This may occur from friction, absorbing moisture, from spontaneous chemical change, or by retaining heat from manufacturing or processing.
- Reactive Flammable Material - a material which is a dangerous fire risk because it can react readily with air or water.
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| Flashback |
This occurs when a trail of flammable material is ignited by a distant source of ignition. The flame then travels back along the trail of gas, vapor or aerosol to its source.
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| Flashpoint |
The lowest temperature of a liquid at which it gives off enough vapor to form an ignitable mixture of vapor and air immediately above the liquid surface. |
| Foreign Animal Disease Diagnostician (FADD) |
A veterinarian who has been through the foreign animal disease training course at Plum Island and receives continuing education in FADs and animal health emergency management.
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| Foreign Animal Disease/Emerging Disease Incident (FAD/EDI) Investigation |
On site assessment conducted by FADDs, as part of the national surveillance program for exotic or emerging animal diseases. The assessment includes: a history of clinical and epidemiological findings, results of physical examinations, necropsy findings, specimen collection and submission to approved laboratory, reporting, initiating appropriate control measures, et al.
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| Free Pratique |
Permission for a ship to enter a port, embark or disembark, discharge or load cargo or stores; permission for an aircraft, after landing, to embark or disembark, discharge or load cargo or stores; and permission for a ground transport vehicle, upon arrival, to embark or disembark, discharge or load cargo or stores;
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| Freezing Point |
The temperature at which a liquid becomes a solid, at normal atmospheric pressure. |
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| Generator |
1. A facility or mobile source that emits pollutants into the air or releases hazardous waste into water or soil. 2. Any person, by site, whose act or process produces regulated medical waste or whose act first causes such waste to become subject to regulation. Where more than one person (e.g. doctors with separate medical practices) are located in the same building, each business entity is a separate generator. |
| Genetic Engineering |
A process of inserting new genetic information into existing cells in order to modify a specific organism for the purpose of changing one of its characteristics. |
| Genotoxic |
Damaging to DNA; pertaining to agents known to damage DNA. |
| Germicide |
Any compound that kills disease-causing microorganisms. |
| Goods |
Tangible products, including animals and plants, transported on an international voyage, including for utilization on board a conveyance;
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| Ground Crossing |
A point of land entry in a State Party, including one utilized by road vehicles and trains;
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| Ground Transport Vehicle |
A motorized conveyance for overland transport on an international voyage, including trains, coaches, lorries and automobiles;
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| Hazard |
The potential for harmful effects.
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| Hazard Assessment |
Evaluating the effects of a stressor or determining a margin of safety for an organism by comparing the concentration which causes toxic effects with an estimate of exposure to the organism.
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| Hazard Communication Standard |
An OSHA regulation that requires chemical manufacturers, suppliers, and importers to assess the hazards of the chemicals that they make, supply, or import, and to inform employers, customers, and workers of these hazards through MSDS information. |
| Hazard Evaluation |
A component of risk evaluation that involves gathering and evaluating data on the types of health injuries or diseases that may be produced by a chemical and on the conditions of exposure under which such health effects are produced. |
| Hazard Identification |
Determining if a chemical or a microbe can cause adverse health effects in humans and what those effects might be. |
| Hazard Zone A |
More than one liter (1.08 quarts) per package of a “material poisonous by inhalation,” as defined in § 171.8 of 49 CFR, that meets the criteria for “Hazard Zone A,” as specified in § 173.116(a) or § 173.133(a) of 49 CFR.
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| Hazard Zone B |
A “material poisonous by inhalation,” as defined in § 171.8 of 49 CFR, that meets the criteria for “Hazard Zone B,” as specified in § 173.116(a) or § 173.133(a) of 49 CFR in a bulk packaging (capacity greater than 450 L [119 gallons] for liquids and a water capacity greater than 454 kg [1,000 pounds] for gas receptacles). |
| Hazard Zone C & D |
A “material poisonous by inhalation,” as defined in § 171.8 of 49 CFR, that meets the criteria for “Hazard Zone C,” or “Hazard Zone D,” as specified in § 173.116(a) or § 173.133(a) of 49 CFR, in a packaging having a capacity equal to or greater than 13,248 L (3,500 gallons). |
| Hazardous Chemical |
An EPA designation for any hazardous material requiring an MSDS under OSHA's Hazard Communication Standard. Such substances are capable of producing fires and explosions or adverse health effects like cancer and dermatitis. Hazardous chemicals are distinct from hazardous waste.(See: Hazardous Waste.) |
| Hazardous Combustion Products |
Chemicals which may be formed when a material burns. These chemicals may be flammable, toxic or have other hazards. |
| Hazardous Decomposition Products |
Formed when a material decomposes (breaks down) because it is unstable, or reacts with materials such as water or oxygen in air. |
| Hazardous Ingredient |
Under the Hazardous Products Act, a chemical must be listed in the Hazardous Ingredients section of a MSDS if:
- it meets the criteria for a controlled product;
- it is on the Ingredient Disclosure List;
- there is no toxicological information available; or
- the supplier has reason to believe it might be hazardous.
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| Hazardous Polymerization |
Polymerization is a process of forming a polymer by combining large numbers of chemical units or monomers into long chains (polyethylene from ethylene or polystyrene from styrene). Uncontrolled polymerization can be extremely hazardous. Some polymerization processes can release considerable heat or can be explosive. |
| Hazardous Ranking System |
The principal screening tool used by EPA to evaluate risks to public health and the environment associated with abandoned or uncontrolled hazardous waste sites. The HRS calculates a score based on the potential of hazardous substances spreading from the site through the air, surface water, or ground water, and on other factors such as density and proximity of human population. This score is the primary factor in deciding if the site should be on the National Priorities List and, if so, what ranking it should have compared to other sites on the list. |
| Hazardous Substance |
1. Any material that poses a threat to human health and/or the environment. Typical hazardous substances are toxic, corrosive, ignitable, explosive, or chemically reactive. 2. Any substance designated by EPA to be reported if a designated quantity of the substance is spilled in the waters of the United States or is otherwise released into the environment.
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| Hazardous Waste |
By-products of society that can pose a substantial or potential hazard to human health or the environment when improperly managed. Possesses at least one of four characteristics (ignitability, corrosivity, reactivity, or toxicity), or appears on special EPA lists. |
| Hazardous Waste Landfill |
An excavated or engineered site where hazardous waste is deposited and covered. |
| Hazmat Employee |
A nyone who directly affects hazardous materials transportation safety.
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| Hazmat Employer |
A nyone who uses employees in connection with transporting hazardous materials in commerce, causing hazardous materials to be transported, or manufacturing or offering packagings as authorized for use in transportation of hazardous materials. |
| Health Assessment |
An evaluation of available data on existing or potential risks to human health posed by a Superfund site. The Agency for Toxic Substances and Disease Registry (ATSDR) of the Department of Health and Human Services (DHHS) is required to perform such an assessment at every site on the National Priorities List. |
| Health Measure |
Procedures applied to prevent the spread of disease or contamination; a health measure does not include law enforcement or security measures;
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| Hemagglutinin |
An important surface structure protein of the influenza virus that is an essential gene for the spread of the virus throughout the respiratory tract. This enables the virus to attach itself to a cell in the respiratory system and penetrate it. Referred to as the “H” in influenza viruses. See neuraminidase. |
| Highly Contagious Disease |
Rapidly spreading from animal to animal as well as herd to herd. Transmission can occur via direct and indirect modes; has above normal morbidity/mortality per unit time; could be based on species or production.
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| Homologous |
Similar in position, structure, function, or characteristics.
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| Host |
An organism on or in which a parasite lives.
1. In genetics, the organism, typically a bacterium, into which a gene from another organism is transplanted.
2. In medicine, an animal infected or parasitized by another organism.
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| Identification Code or EPA I.D. Number |
The unique code assigned to each generator, transporter, and treatment, storage, or disposal facility by regulating agencies to facilitate identification and tracking of chemicals or hazardous waste. |
| ill Person |
An individual suffering from or affected with a physical ailment that may pose a public health risk;
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| Immune System |
The cells, tissues and organs that help the body to resist infection and disease by producing antibodies and/or altered cells that inhibit the multiplication of the infectious agent.
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| Incident Command Post |
A facility located at a safe distance from an emergency site, where the incident commander, key staff, and technical representatives can make decisions and deploy emergency manpower and equipment.
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| Incident Command System (ICS) |
The organizational arrangement wherein one person, normally the Fire Chief of the impacted district, is in charge of an integrated, comprehensive emergency response organization and the emergency incident site, backed by an Emergency Operations Center staff with resources, information, and advice. |
| Incineration |
A treatment technology involving destruction of waste by controlled burning at high temperatures; e.g., burning sludge to remove the water and reduce the remaining residues to a safe, non-burnable ash that can be disposed of safely on land, in some waters, or in underground locations. |
| Incinerator |
A furnace for burning waste under controlled conditions. |
| Infectious Agent |
Any organism, such as a pathogenic virus, parasite, or bacterium, that is capable of invading body tissues, multiplying, and causing disease. |
| Infectious substance |
A material known to contain or suspected of containing a pathogen that causes disease in humans or animals. An infectious substance must be assigned a risk group. (Division 6.2) |
| Infectious Waste |
Hazardous waste capable of causing infections in humans, including: contaminated animal waste; human blood and blood products; isolation waste, pathological waste; and discarded sharps (needles, scalpels or broken medical instruments).
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| Influenza |
A serious disease caused by viruses that infect the respiratory tract. |
| Ingestion |
Means taking a material into the body by mouth (swallowing).
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| Inhalation |
Means taking a material into the body by breathing it in. |
| Irritant |
Some sort of aggravation of whatever tissue the material comes in contact with. |
| Infection |
The entry and development or multiplication of an infectious agent in the body of humans and animals that may constitute a public health risk.
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| Inspection |
The examination, by the competent authority or under its supervision, of areas, baggage, containers, conveyances, facilities, goods or postal parcels, including relevant data and documentation, to determine if a public health risk exists.
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| International Traffic |
The movement of persons, baggage, cargo, containers, conveyances, goods or postal parcels across an international border, including international trade.
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| International Transportation |
The transportation :
- Between any place in the United States and any place in a foreign country;
- Between places in the United States through a foreign country; or
- Between places in one or more foreign countries through the United States.
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| International Voyage |
(a) In the case of a conveyance, a voyage between points of entry in the territories of more than one State, or a voyage between points of entry in the territory or territories of the same State if the conveyance has contacts with the territory of any other State on its voyage but only as regards those contacts;
(b) In the case of a traveler, a voyage involving entry into the territory of a State other than the territory of the State in which that traveler commences the voyage;
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| Intrusive |
Possibly provoking discomfort through close or intimate contact or questioning;
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| Invasive |
The puncture or incision of the skin or insertion of an instrument or foreign material into the body or the examination of a body cavity. For the purposes of these Regulations, medical examination of the ear, nose and mouth, temperature assessment using an ear, oral or cutaneous thermometer, or thermal imaging; medical inspection; auscultation; external palpation; retinoscopy; external collection of urine, faeces or saliva samples; external measurement of blood pressure; and electrocardiography shall be considered to be non-invasive;
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| Isolate |
A pure strain that has been isolated as from diseased tissue, contaminated water, or the air. |
| Isolation |
Separation of ill or contaminated persons or affected baggage, containers, conveyances, goods or postal parcels from others in such a manner as to prevent the spread of infection or contamination;
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| Labels |
Defined as 4" x 4" colored diamond with warning words and graphics, affixed to the outside of the shipping container or box. Labels are required on the outside of the package regardless of the quantity shipped |
| Leachate |
Water that collects contaminants as it trickles through wastes, pesticides or fertilizers. Leaching may occur in farming areas, feedlots, and landfills, and may result in hazardous substances entering surface water, ground water, or soil.
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| Leachate Collection System |
A system that gathers leachate and pumps it to the surface for treatment. |
| Leaching |
The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid. (See: leachate.) |
| Liquid |
A material, other than an elevated temperature material, with a melting point or initial melting point of 20 °C (68 °F) or lower at a standard pressure of 101.3 kPa (14.7 psia). A viscous material for which a specific melting point cannot be determined must be subjected to the procedures specified in ASTM D 4359 “Standard Test Method for Determining Whether a Material is Liquid or Solid”. |
| Liquid Phase |
A material that meets the definition of liquid when evaluated at the higher of the temperature at which it is offered for transportation or at which it is transported, not at the 37.8 °C (100 °F) temperature specified in ASTM D 4359. |
| Loading Incidental To Movement |
Loading by carrier personnel or in the presence of carrier personnel of packaged or containerized hazardous material onto a transport vehicle, aircraft, or vessel for the purpose of transporting it, including the loading, blocking and bracing a hazardous materials package in a freight container or transport vehicle, and segregating a hazardous materials package in a freight container or transport vehicle from incompatible cargo. For a bulk packaging, loading incidental to movement means filling the packaging with a hazardous material for the purpose of transporting it. |
| Local Exhaust Ventilation |
Involves the capture of pollutants at the source. |
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| Markings |
It is required by DOT to convey specific information about the enclosed hazard and the person responsible. |
| Material Causing Immediate and Serious Toxic Effects |
Classified under "Poisonous and Infectious Material" as toxic or very toxic based on information such as the LD50 or LC50. |
| Material Causing Other Toxic Effects |
Classified under "Poisonous and Infectious Material" as a material causing toxic effects such as skin or respiratory sensitization, carcinogenicity, mutagenicity, etc.
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| Material Safety Data Sheet (MSDS) |
A compilation of information required under the OSHA Communication Standard on the identity of hazardous chemicals, health, and physical hazards, exposure limits, and precautions. Section 311 of SARA requires facilities to submit MSDSs under certain circumstances. |
| Medical Examination |
The preliminary assessment of a person by an authorized health worker or by a person under the direct supervision of the competent authority, to determine the person’s health status and potential public health risk to others, and may include the scrutiny of health documents, and a physical examination when justified by the circumstances of the individual case.
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| Medical Surveillance |
A periodic comprehensive review of a worker's health status; acceptable elements of such surveillance program are listed in the Occupational Safety and Health Administration standards for asbestos.
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| Medical Waste |
Any solid waste generated in the diagnosis, treatment, or immunization of human beings or animals, in research pertaining thereto, or in the production or testing of biologicals, excluding hazardous waste identified or listed under 40 CFR Part 261 or any household waste as defined in 40 CFR Sub-section 261.4 (b)(1). |
| Medium-size Water System |
A water system that serves 3,300 to 50,000 customers
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| Melting Point |
The temperature at which a solid material becomes a liquid. |
| Material of Trade (MOT) |
A hazardous material, other than a hazardous waste, that is carried on a motor vehicle—
- For the purpose of protecting the health and safety of the motor vehicle operator or passengers;
- For the purpose of supporting the operation or maintenance of a motor vehicle (including its auxiliary equipment); or
- By a private motor carrier (including vehicles operated by a rail carrier) in direct support of a principal business that is other than transportation by motor vehicle.
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| Material of Trade, Division 6.2 Material |
A Division 6.2 material, other than a Category A infectious substance, contained in human or animal samples (including, but not limited to, secreta, excreta, blood and its components, tissue and tissue fluids, and body parts) being transported for research, diagnosis, investigational activities, or disease treatment or prevention, or is a biological product or regulated medical waste.
The material must be contained in a combination packaging. For liquids, the inner packaging must be leakproof, and the outer packaging must contain sufficient absorbent material to absorb the entire contents of the inner packaging. For sharps, the inner packaging (sharps container) must be constructed of a rigid material resistant to punctures and securely closed to prevent leaks or punctures, and the outer packaging must be securely closed to prevent leaks or punctures. For solids, liquids, and sharps, the outer packaging must be a strong, tight packaging securely closed and secured against movement, including relative motion between packages, within the vehicle on which it is being transported.
- For other than a regulated medical waste, the amount of Division 6.2 material in a combination packaging must conform to the following limitations:
- One or more inner packagings, each of which may not contain more than 0.5 kg (1.1 lbs) or 0.5 L (17 ounces), and an outer packaging containing not more than 4 kg (8.8 lbs) or 4 L (1 gallon); or
- A single inner packaging containing not more than 16 kg (35.2 lbs) or 16 L (4.2 gallons) in a single outer packaging.
- For a regulated medical waste, a combination packaging must consist of one or more inner packagings, each of which may not contain more than 4 kg (8.8 lbs) or 4 L (1 gallon), and an outer packaging containing not more than 16 kg (35.2 lbs) or 16 L (4.2 gallons).
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| Molecular Formula |
A chemical formula that shows the number of atoms of each element in a molecule of a compound. |
| Molecular Weight |
The sum of the atomic weights of a molecule's constituent atoms. |
| Morbidity |
Rate of disease incidence. |
| Mortality |
Death rate. |
| Mutagen |
An agent that affects the genes or cells of the exposed people in such a way that it may cause cancer in the exposed individual or an undesirable mutation to occur in some later generation. |
| Mutation |
Any alteration in a gene from its natural state. This change may be disease causing or a benign, normal variant. Specific mutations and evolution in influenza viruses cannot be predicted, making it difficult if not impossible to know if or when a virus such as H5N1 might acquire the properties needed to spread easily among humans. |
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| NA Number |
See "UN number" |
| National IHR Focal Point |
The national centre, designated by each State Party, which shall be accessible at all times for communications with WHO IHR Contact Points under these Regulations;
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| National Response Center |
The federal operations center that receives notifications of all releases of oil and hazardous substances into the environment; open 24 hours a day, is operated by the U.S. Coast Guard, which evaluates all reports and notifies the appropriate agency.
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| National Response Team (NRT) |
Representatives of 13 federal agencies that, as a team, coordinate federal responses to nationally significant incidents of pollution--an oil spill, a major chemical release, or a - superfund response action--and provide advice and technical assistance to the responding agency(ies) before and during a response action. |
| Neuraminidase |
An important surface structure protein of the influenza virus that is an essential enzyme for the spread of the virus throughout the respiratory tract. It enables the virus to escape the host cell and infect new cells. Referred to as the “N” in influenza viruses. See hemagglutinin. |
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| Odor Threshold |
The airborne concentration, usually in part per million, at which an odor becomes noticeable |
| Overpack |
Several packages are combined to form one unit and sent to the same destination by a single shipper. When refrigerants are used to protect contents, the overpacks may comprise insulated vessels or flasks. Whenever an overpack is used, the required marks and labels shown on the outer packaging must be repeated on the outermost layer of the overpack. This requirement applies to infectious substances in Categories A and B. Overpacks are also required to be marked with the word “overpack”. |
| Oxidizing Material |
Gives up oxygen easily or can readily oxidize other materials. |
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| Pandemic |
The worldwide outbreak of a disease in numbers clearly in excess of normal. See epidemic.
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| Parasite |
An organism living in, with, or on another organism. |
| Particulates |
1. Fine liquid or solid particles such as dust, smoke, mist, fumes, or smog, found in air or emissions. 2. Very small solids suspended in water; they can vary in size, shape, density and electrical charge and can be gathered together by coagulation and flocculation. |
| Parts Per Billion (ppb)/Parts Per Million (ppm) |
Units commonly used to express contamination ratios, as in establishing the maximum permissible amount of a contaminant in water, land, or air. |
| Pathogenic |
Causing disease or capable of doing so. |
| Pathogens |
Microorganisms (e.g., bacteria, viruses, or parasites) that can cause disease in humans, animals and plants. |
| Pathway |
The physical course a chemical or pollutant takes from its source to the exposed organism. |
| Permanent Residence |
It has the meaning as determined in the national law of the State Party concerned.
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| Permissible Exposure Limits (PEL) |
Legal limits in the U.S.A. set by the Occupational Safety and Health Administration (OSHA). |
| Personal Data |
Any information relating to an identified or identifiable natural person. |
| pH |
A measure of the acidity or basicity (alkalinity) of a material when dissolved in water. |
| Placards |
The DOT requires placards, a much larger version of the labels, to be displayed on tank cars, cargo tanks, portable tanks and bulk packaging. Requirements for placarding are dependent upon the identity and quantity shipped. |
| Point of Entry |
A passage for international entry or exit of travellers, baggage, cargo, containers, conveyances, goods and postal parcels as well as agencies and areas providing services to them on entry or exit.
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| Polymer |
A natural or man-made material formed by combining units, called monomers, into long chains. |
| Polymerization |
A process of forming a polymer by combining large numbers of chemical units or monomers into long chains. |
| Port |
A seaport or a port on an inland body of water where ships on an international voyage arrive or depart.
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| Postal Parcel |
An addressed article or package carried internationally by postal or courier services.
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| Potentially Responsible Party (PRP) |
Any individual or company--including owners, operators, transporters or generators--potentially responsible for, or contributing to a spill or other contamination at a Superfund site. Whenever possible, through administrative and legal actions, EPA requires PRPs to clean up hazardous sites they have contaminated. |
| Prophylactic |
A medical procedure or practice that prevents or protects against a disease or condition (eg, vaccines, antibiotics, drugs). |
| Public Health Emergency of International Concern |
An extraordinary event which is determined, as provided in these Regulations:
- to constitute a public health risk to other States through the international spread of disease
- to potentially require a coordinated international response.
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| Public Health Observation |
The monitoring of the health status of a traveller over time for the purpose of determining the risk of disease transmission.
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| Public Health Risk |
A likelihood of an event that may affect adversely the health of human populations, with an emphasis on one which may spread internationally or may present a serious and direct danger.
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| Quarantine |
The restriction of activities and/or separation from others of suspect persons who are not ill or of suspect baggage, containers, conveyances or goods in such a manner as to prevent the possible spread of infection or contamination.
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| Reactivity |
Tendency to participate in chemical reactions. |
| Recommendation and Recommended |
It refers to temporary or standing recommendations issued under these Regulations.
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| Red Bag Waste |
(See: infectious waste.) |
| Reservoir |
An animal, plant or substance in which an infectious agent normally lives and whose presence may constitute a public health risk.
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| Reassortment |
The rearrangement of genes from two distinct influenza strains to produce a novel viral strain. |
| Regulated Medical Waste |
A waste or reusable material known to contain or suspected of containing a RG 2 or 3 infectious substance and generated in the diagnosis, treatment, or immunization of human beings or animals, research related to these activities, or the production or testing of biological products.
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| Response Action |
1. Generic term for actions taken in response to actual or potential health-threatening environmental events such as spills, sudden releases, and asbestos abatement/management problems. 2. A CERCLA-authorized action involving either a short-term removal action or a long-term removal response. This may include but is not limited to: removing hazardous materials from a site to an EPA-approved hazardous waste facility for treatment, containment or treating the waste on-site, identifying and removing the sources of ground-water contamination and halting further migration of contaminants. 3. Any of the following actions taken in school buildings in response to AHERA to reduce the risk of exposure to asbestos: removal, encapsulation, enclosure, repair, and operations and maintenance. (See: cleanup.) |
| Risk |
A measure of the probability that damage to life, health, property, and/or the environment will occur as a result of a given hazard.
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| Risk Assessment |
Qualitative and quantitative evaluation of the risk posed to human health and/or the environment by the actual or potential presence and/or use of specific pollutants. |
| Risk Characterization |
The last phase of the risk assessment process that estimates the potential for adverse health or ecological effects to occur from exposure to a stressor and evaluates the uncertainty involved. |
| Risk Communication |
The exchange of information about health or environmental risks among risk assessors and managers, the general public, news media, interest groups, etc. |
| Risk Estimate |
A description of the probability that organisms exposed to a specific dose of a chemical or other pollutant will develop an adverse response, e.g., cancer. |
| Risk Factor |
Characteristics (e.g., race, sex, age, obesity) or variables (e.g., smoking, occupational exposure level) associated with increased probability of a toxic effect. |
| Risk group |
A number from 1 (low risk) to 4 (high risk) that represents the rank of a microorganism’s ability to cause injury through disease to an individual and community based on its severity, mode and ease of transmission, and reversibility through available agents and treatment.
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| Road Vehicle |
A ground transport vehicle other than a train. |
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| Seasonal Flu |
A respiratory illness that can be transmitted person to person. Most people have some immunity, and a vaccine is available. This is also known as the common flu or winter flu. |
| Scientific Evidence |
Information furnishing a level of proof based on the established and accepted methods of science.
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| Scientific Principles |
The accepted fundamental laws and facts of nature known through the methods of science.
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| Sensitization |
The development, over time, of an allergic reaction to a chemical |
| Sharps |
Any object that is or may become contaminated with a pathogen through handling or during transportation that is capable of cutting or penetrating skin or a packaging material. |
| Shift |
The process in which the existing H (hemagglutinin) and N (neuraminidase) are replaced by significantly different H and Ns. These new H or H/N combinations are perceived by human immune systems as new, so most people do not have pre-existing antibody protection to these novel viruses. This is one of the reasons that pandemic viruses can have such a serve impact on the health of populations. See drift. |
| Ship |
A seagoing or inland navigation vessel on an international voyage. |
| Small Quantity Generator (SQG-sometimes referred to as "Squeegee") |
Persons or enterprises that produce 220-2200 pounds per month of hazardous waste; they are required to keep more records than conditionally exempt generators. The largest category of hazardous waste generators, SQGs, include automotive shops, dry cleaners, photographic developers, and many other small businesses. (See: conditionally exempt generators.) |
| Solubility |
The ability of a material to dissolve in water or another liquid.
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| Solvent |
A material which is capable of dissolving another chemical. |
| Source Reduction |
Reducing the amount of materials entering the waste stream from a specific source by redesigning products or patterns of production or consumption (e.g., using returnable beverage containers). Synonymous with waste reduction. |
| Species |
A class of plants or animals having common attributes and designated by a common name. Theoretically, plants or animals of different species cannot interbreed. However, occasionally this does not hold true.
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| Specific Gravity |
The density of a liquid compared to the density of an equal amount of water. |
| Stability |
The ability of a material to remain unchanged in the presence of heat, moisture or air. |
| Standing Recommendation |
Non-binding advice issued by WHO for specific ongoing public health risks pursuant to Article 16 regarding appropriate health measures for routine or periodic application needed to prevent or reduce the international spread of disease and minimize interference with international traffic.
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| Start of a Response Action |
The point in time when there is a guarantee or set-aside of funding by EPA, other federal agencies, states or Principal Responsible Parties in order to begin response actions at a Superfund site.
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| State Emergency Response Commission (SERC) |
Commission appointed by each state governor according to the requirements of SARA Title III. The SERCs designate emergency planning districts, appoint local emergency planning committees, and supervise and coordinate their activities |
| State Veterinarian |
The veterinary officer for a particular State or territory of the US in charge of animal health activities.
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| Strain |
A group of organisms within a species or variety. |
| Surveillance |
The systematic ongoing collection, collation and analysis of data for public health purposes and the timely dissemination of public health information for assessment and public health response as necessary.
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| Suspect |
Those persons, baggage, cargo, containers, conveyances, goods or postal parcels considered by a State Party as having been exposed, or possibly exposed, to a public health risk and that could be a possible source of spread of disease.
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| Temporary Recommendation |
Non-binding advice issued by WHO pursuant to Article 15 for application on a time-limited, risk-specific basis, in response to a public health emergency of international concern, so as to prevent or reduce the international spread of disease and minimize interference with international traffic.
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| Temporary Residence |
It has the meaning as determined in the national law of the State Party concerned.
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| Teratogen |
Agents or compounds that a pregnant woman takes into her body that generate defects in the fetus. |
| Toxicity |
Ability of a substance to cause harmful effects. |
| Toxin |
A Division 6.1 (poisonous) material from a plant, animal, or bacterial source that contains or is contained in a Division 6.2 material. |
| Trade Name |
The name under which a product is commercially known. |
| Traveler |
A natural person undertaking an international voyage. |
| Treated Regulated Medical Waste |
Medical waste treated to substantially reduce or eliminate its pathogenicity, but that has not yet been destroyed. |
| Treatment |
(1) Any method, technique, or process designed to remove solids and/or pollutants from solid waste, waste-streams, effluents, and air emissions.
(2) Methods used to change the biological character or composition of any regulated medical waste so as to substantially reduce or eliminate its potential for causing diease. |
| Treatment, Storage, and Disposal Facility |
Site where a hazardous substance is treated, stored, or disposed of. TSD facilities are regulated by EPA and states under RCRA. |
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| UN Number |
A four digit number assigned to a potentially hazardous material or class of materials. UN (United Nations) numbers are internationally recognized and are used by fire fighter and other emergency response personnel for identification of materials during transportation emergencies. NA (North American) numbers are assigned by Transport Canada and the US Department of Transport to materials they consider hazardous and to which a UN number has not been assigned. |
| Used Health Care Product |
A medical, diagnostic, or research device or piece of equipment, or a personal care product used by consumers, medical professionals, or pharmaceutical providers that is contaminated with potentially infectious body fluid or material. It does not meet the definition of a diagnostic specimen, biological product, or RMW. |
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| Vaccine |
A preparation consisting of antigens of a disease-causing organism which, when introduced into the body, stimulates the production of specific antibodies or altered cells. This produces an immunity to the disease-causing organism. The antigen in the preparation can be whole disease-causing organisms (killed or weakened) or parts of these organisms. |
| Vapor |
A gaseous form of a material which is normally solid or liquid at room temperature and pressure. |
| Vapor Density |
The density of a vapor compared to the density of an equal amount of air. |
| Vapor Pressure |
The pressure of a vapor in equilibrium with its liquid or solid form.
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| Vector |
An insect or other animal which normally transports an infectious agent that constitutes a public health risk.
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| Ventilation |
The movement of air. |
| Verification |
The provision of information by a State Party to WHO confirming thestatus of an event within the territory or territories of that State Party.
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| Virulent |
Highly lethal; causing severe illness or death.
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| Virus |
Any of various simple submicroscopic parasites of plants, animals, and bacteria that often cause disease and that consist essentially of a core of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell, viruses are typically not considered living organisms. |
| Volatility |
The ability of a material to evaporate. |
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| Waterborne Disease Outbreak |
The significant occurence of acute illness associated with drinking water from a public water system that is deficient in treatment, as determined by appropriate local or state agencies. |
| Waterfowl |
Birds that swim and live near water, including ducks, geese, and swans. |
| WHO IHR Contact Point |
The unit within WHO which shall be accessible at all times for communications with the National IHR Focal Point.
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