disorders, and neurological disorders are examples of chronic illnesses that have been associated with exposures to some types of pesticides.
Class 1 disposal site. a disposal site for toxic and hazardous materials such as pesticides and pesticide-contaminat- ed wastes.
coccidioidomycosis. an infection caused by inhaling the spores of the fungus Coccidioides immitis. The infection is also known as Valley Fever. This fun- gus is often found in desert regions.
cooling tower fill. the structures inside a cooling tower that provide surfaces for flowing water to pass over to release heat.
coverall. a one or two-piece garment of closely woven fabric that covers the entire body except the head, hands, and feet, and must be provided by the employer as personal protective equipment. Coveralls differ from, and should not be confused with, work clothing that can be required to be provided by the employee.
danger. the signal word used on labels of highly hazardous pesticides—those pesticides with an oral LD50 less than 50 mg/kg or a dermal LD50 less than 200 mg/kg or those having specific, serious health or environmental hazards.
dermal. pertaining to the skin. One of the major ways pesticides can enter the body to possibly cause poisoning.
dermatitis. inflammation, itching, or irri- tation of the skin caused by pesticide exposure or other irritants.
disease. a condition, caused by biotic or abiotic factors, that impairs some or all of the normal functions of a living organism.
dose. the measured quantity of a pesti- cide. Often the size of the dose deter- mines the degree of effectiveness, or, in the case of poisoning of nontarget organisms, the degree of injury.
drift. the movement of pesticide dust, spray, or vapor through the air away from the application site.
eduction tube. in gas cylinders, a tube that extends to the bottom of the cyl-
inder, enabling liquid instead of gas to be drawn out.
Environmental Protection Agency (EPA). the federal agency responsible for registering pesticides and regulating pesticide use in the United States.
eradication. the pest management strategy that attempts to eliminate all members of a pest species from a defined area.
exclusion. a pest management technique that uses physical or chemical barriers to prevent certain pests from getting into a defined area.
exposure. the unwanted contact with pesticides or pesticide residues by people, other organisms, or the envi- ronment.
federally restricted. a classification of pesticides by the U.S. EPA that restricts the use of these materials to certified pesticide applicators.
filamentous. long and threadlike.
filamentous algae. a species of algae that quickly reproduces and clings to any surface, identified by its characteristic hair-like or threadlike mats.
fill. see cooling tower fill.
first aid. the immediate assistance provid- ed to someone who has received an exposure to a pesticide. First aid for pesticide exposure usually involves removal of contaminated clothing and washing the affected area of the body to remove as much of the pesti- cide material as possible. First aid is not a substitute for competent medi- cal treatment.
fission. the process by which a bacterial cell reproduces by splitting into two identical cells.
formulation. a mixture of active ingredi- ent combined during manufacture with inert materials. Inert materials are added to improve the mixing and handling qualities of a pesticide.
fruiting bodies. special structures pro- duced by fungi that contain the spores by which the organisms repro- duce.
fumigant. vapor or gas form of a pesti- cide used to penetrate porous sur- faces to control pests in containers