Air Quality Engineer Job Description (sample): The primary responsibilities for this position will be to
perform air emission calculations and state and federal regulatory
analysis. Work with teams to prepare air permit applications
and provide compliance support.This position
will be part of our Air Quality Practice Team.B.S. in Engineering. Excellent verbal and written
communication skills. Proficiency in Microsoft Office.
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Air Quality
Index
The
Air Quality Index (AQI)
is a
standardized
indicator of the
air
quality
in a given location. It uses the
measure of particulates and
contaminatants in the air to
determine how clean the air is. When
air pollution is poor, government
agencies and the media recommend
public transportation and
teleworking to help improve air
quality. Different countries around
the world have different scales for
internal use. In all scales, the
lower the number, the better the air
quality.
101-150
Unhealthy for
sensitive groups
is usually
orange
151-200
Unhealthy is
usually red
201-300
Very unhealthy
is usually
purple
301-500
Hazardous is
usually maroon
The EPA's AQI 100
corresponds to 0.08
ppm ozone, and to
other levels for
other pollutants.
Source:
EPA
The United States
Environment
Protection Agency (USEPA)
developed the
Pollutant Standards
Index (PSI)
to provide accurate,
timely and easily
understandable
information about
daily levels of air
pollution. It is no
longer in use,
having been replaced
by the AQI, which is
more sensitive. For
example, particulate
matter with an
aerodynamic diameter
less than 2.5
micrometres
(PM2.5) is a sub
index, replacing the
less sensitive PM10
component of the PSI.
The air quality in
the United States
has improved
dramatically over 23
years.
In June 2007, the
EPA proposed a
slight possible
tightening of the
pollution standards
associated with smog
after an independent
EPA scientific board
said that the
standard “needs to
be substantially
reduced” and that
there is “no
scientific
justification” for
retaining the
current, weaker
standard.
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