chapter 21 Environmental issues Flashcards
Asbestos
a fire resistant mineral that was once used extensively as insulation and to strengthen other materials
Encapsulation
sealing off of disintegrating asbestos, is an alternate method of asbestos control that may be preferable to removal in certain circumstances, provided the condition of the encapsulated asbestos is monitored periodically to make sure it is not disintegrating.
friable
as it ages asbestos fibers easily break down into tiny, very light filaments that stay in the air a long time when it is disturbed or exposed.
lead
was used as a pigment and drying agent in alkyd oil-based paint.
lead based paint hazard Reduction Act
requiring disclosure of presence of any known lead based paint hazards to potential buyers or renters
radon
naturally occurring, colorless, tateless, radioactive gas produced by decay of other radioactive substances
Formaldehyde
colorless chemical with a strong pronounced odor, is used widely in the manufacture of building materials and many household products because of its preservative characteristicw
UFFI Urea-Formaldehyde Foam Insulation
foam insulation rarely used
carbon monoxide
colorless, odorless, and tasteless gas that occurs as a by-product of burning fuels such as wood, oil, and natural gas, owing to incomplete combustion.
PCB’s
consist of more than 200 chemical compounds that are not found naturally in nature. Flame resistant, they were often used in electrical equipment, such as transformers, refrigerators.
CFC’s
nontoxic, nonflammable chemicals uses as refrigerants in ac’s, fridges and freezers. they deplete the ozone layer
Mold
can be found almost anywhere and can grow on almost any organic substance, as long as moisture, oxygen and organic food source are present. Moisture feeds mold growth
brownfields
defunct, derelict or abandoned commercial or industrial sites many of which are suspected to contain waste
Landfill
enormous hole, either excavated for the purpose of wast disposal or left over from surface mining operations.
Capping
is the process of laying two to four feet of soil over the top of the site and then planting grass on it to enhance the landfill’s aesthetic value and prevent erosion