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R&P
Rupprecht and Patashnik Co., Inc.
Radon
A colourless naturally occurring, radioactive, inert gas
formed by radioactive decay of radium atoms in soil or rocks.
Receptor
1) In biochemistry
a specialised molecule in a cell that binds a specific chemical
with high specificity and high affinity. 2) In exposure
assessment
an organism that receives, may receive, or has received
environmental exposure to a chemical.
Reconnaissance Visit
Pre-test visit to assess the suitability and safety of stack
sampling facilities or location of air quality monitoring
equipment.
Recycle/Reuse
Minimising waste generation by recovering and reprocessing
usable products that might otherwise become waste (i.e.
recycling of aluminium cans, paper, and bottles, etc.).
Reduction
The addition of hydrogen, removal of oxygen, or addition of
electrons to an element or compound.
Remote Sensing
The capture of information about the Earth from a distant
vantage point. The term is often associated with satellite
imagery but also applies to aerial photography, airborne
digital sensors, ground-based detectors, and other devices.
Representative Sample
A portion of material or water that is as nearly identical
in content and consistency as possible to that in the larger
body of material or water being sampled.
Ringlemann Chart
A series of shaded illustrations used to measure the opacity
of air pollution emissions, ranging from light grey through
black; used to set and enforce emissions standards.
Risk Management
The process of evaluating and selecting alternative regulatory
and non-regulatory responses to risk. The selection process
necessarily requires the consideration of legal, economic,
and behavioural factors.
Rotary Kiln Incinerator
An incinerator with a rotating combustion chamber that keeps
waste moving, thereby allowing it to vaporise for easier
burning.
Route of Exposure
The avenue by which a chemical comes into contact with an
organism (e.g., inhalation, ingestion, dermal contact, and
injection.)
Run-Off
That part of precipitation, snowmelt, or irrigation water
that runs off the land into streams or other surface-water.
It can carry pollutants from the air and land into receiving
waters.
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