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Volume 7 - Issue 07 |
Monthly Newsletter
- July 2006 |
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News & Events
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Lakes Environmental at A&WMA 2006
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A special thanks to everyone who stopped by our booth at the
99th Annual Air & Waste Management Association Conference and Exhibition
in New Orleans, Louisiana. Lakes Environmental would like to
congratulate David McCready, from The Dow Chemical Company,
who is the winner of a copy
of our ISC-AERMOD
View software package!
We look forward to seeing you next year in Pittsburgh, Pennsylvania
for A&WMA’s 100th Conference and Exhibition from June 26-29, 2007.
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CALPUFF View Version 1.9 for VISTAS Released! |
Lakes Environmental is proud to announce the release
of CALPUFF View version 1.9. This version of CALPUFF View is fully compatible
with the VISTAS recommended version of the CALPUFF modeling system and
also includes several new graphical features. Please contact us at info@weblakes.com for
more details, or go to the Release
Notes to view the release notes.
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Upcoming Courses
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We’ve set a number of training dates for 2006, with additional courses to be announced. Please contact us at
training@weblakes.com
for international or customized training needs.
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AERMOD & ISCST3 Courses |
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CALPUFF Courses |
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For more information on these courses, such as registration information and course outlines,
please visit our website:
https://www.weblakes.com/courses.html.
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Customized Courses |
Lakes Environmental offers a variety of on-site,
customized courses for all of your air dispersion modeling needs.
For information on pricing and availability, please email us at
training@weblakes.com. |
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Monthly Modeling Tip
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Odor Modeling Tip – Part
1 |
The mechanisms of odor dispersion in the atmosphere are the same
as the dispersion of other pollutants. When modeling odor concentrations
using the U.S. EPA AERMOD or ISCST3 models, there are a few considerations
to be made:
Determining Odor Emissions Rates
1) Single Odor-Producing Pollutant:
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Odor Emission Rate [g/s]: specify the pollutant
emission rate in g/s as you would specify if doing a normal air dispersion
modeling study.
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Model Output Concentration.[µg/m3]: the
model predicted concentration will be given in mass per
volume (µg/m3).
Compare this concentration with the pollutant specific
odor threshold which is generally
given in parts per million (ppm) and/or µg/m3.
2) Multiple Odor-Producing Pollutants:
When multiple pollutants are emitted, masking and enhancing effects may
occur, in this case the relationship between concentration and odor is
not well defined and odor must be characterized in terms of an odor detection
threshold value (OTV).
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Odor Detection Threshold Value [OTV]: Using a
panel of testers, the OTV is the value at which 50% of the panelists can
just detect the
odor. Odor complaint levels are usually 2 to 3 times higher
than the odor threshold levels.
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Odor Concentration [OU/m3]: Odor
concentration is expressed in terms of odor dilution ratio or
odor units (OU) per cubic meter of air
(OU/m3), where the odor is no longer perceptible
by 50% of the panelists.
Example: If an odorous air sample of the exhaust
stream was diluted with 1000 volumes of odor-free air to reach
the
OTV, then the odor concentration
of the sample would be given as 1000 OU/m3.
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Odor Emission Rate [OU/s]: The odor emission rate of the source
can then be calculated as follows:
E = V x DTT
E = Odor emission rate (OU/s)
V = Volumetric flow rate of the emission source (m3/s)
DTT = Odor concentration in OU/m3 (which is the number
of dilutions to od our threshold)
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Model Output Concentration [OU/m3]: The model predicted odor concentration
will be given in terms of OU/m3. These values should than be compared with
the odor threshold of 1 OU/m3 (odor detection threshold).
ISC-AERMOD View Users: You
can specify the emission unit label of OU/s and the concentration
unit label of OU/m3 in the Source Pathway under Emission
Output Unit.
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Don’t Forget: Submit Your Modeling Tips Now! |
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We are currently accepting submissions for the Monthly Modeling Tip which
appears in our newsletters. If you have a modeling tip that may
benefit a variety of people, please send it to us at support@weblakes.com.
Your name and the name of your organization will appear below the
tip providing you with greater exposure.
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News From Our Partners
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Addlink Software Cientifico - Spain & Portugal
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First Training Courses on AERMOD and CALPUFF
to be Held in Barcelona this November
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Lakes Environmental and Addlink Software Cientifico will collaborate
to deliver the first training courses for
the AERMOD and CALPUFF air dispersion models. The course
will take place from November 6th to 8th (AERMOD)
and from November 8th to 10th (CALPUFF). The course
instructor will be Dr. Jesse
L. Thé, founder and President of Lakes Environmental Software,
who lectured on Air Dispersion Modeling last May in Barcelona
and Madrid to a packed auditorium. For more details, visit
the Addlink Software Cientifico website
at https://www.ingenieria-ambiental.es/seminarios/ or
email info@addlink.es
Space is limited – Register today to avoid disappointment!
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AWN (Air Water Noise) Consultants
Pty Ltd - Australia
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Upcoming Air Dispersion Modeling Courses to be Held
in Australia
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Lakes Environmental and AWN have teamed up to offer a CALPUFF and
AERMOD training courses in Melbourne, Australia from October
9-13th, 2006. Watch our upcoming newsletters for more information,
or email
info@weblakes.com
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This Month's Articles
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USA: Court Rejects EPA Appeal to Resurrect Clean Air Act Loophole
A federal court has rejected a Bush administration request to
reconsider a March decision striking down a rule that would have
sabotaged a key Clean Air Act provision and threatened the health
of millions of Americans.
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Lighting the Key to Energy Saving
A global switch to efficient lighting systems would trim the world's
electricity bill by nearly one-tenth. That is the conclusion of a
study from the International Energy Agency (IEA), which it says is
the first global survey of lighting uses and costs.
Read
Article
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Tracking POPs Across the Planet
A team of scientists from North America and Europe is publishing
the most comprehensive analysis yet of global concentrations of persistent
organic pollutants (POPs) in air today on ES&T’s Research
ASAP website (10.1021/es060447t). Although some of the data have been
presented at scientific conferences, this is the first time the information
is being published in a peer-reviewed journal.
Read Article
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Hong Kong Wind Farm Could Improve Air Quality
The city's air quality is notoriously bad, with pollution costing
Hong Kong around US$2.7bn per year in medical bills.
Now Hong Kong Electric Holdings (HEH), a major power supplier in the city, has
asked the Government for permission to build a 40-turbine wind farm in on of
two locations, each about two miles off the shore of outlying islands.
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High Levels of Particulate Pollution in Chinese Megacities
The most comprehensive study yet of organic pollutants in Chinese
urban air was posted today to ES&T’s Research ASAP website
(DOI: 10.1021/es060291x). Conducted by a team of researchers from China
and Japan, the study is the first to compare levels of organic aerosol
particles in China’s newly developing midwestern cities with levels
in older megacities such as Beijing, Hong Kong, and Shanghai. The research
confirms that most of the 14 cities studied have much higher levels
of air pollution than cities in developed countries.
Read
Article
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China Makes Wind Turbine Breakthrough
Regarded as a key breakthrough in the evolution of global wind power
technology - and a notable advance in independent intellectual property
rights in China - the generator was jointly developed by Guangzhou Energy
Research Institute under China’s Academy of Sciences and by Guangzhou
Zhongke Hengyuan Energy Science & Technology Co., Ltd.
Read
Article
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Conferences & Tradeshows
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Here are a few Conferences and Tradeshows coming up in the next few months: |
Jul 17-19, 2006 |
Indoor Environmental Quality: Problems,
Research and Solutions
more
info |
Durham, NC, USA |
Aug 6-11, 2006 |
8th International Conference on Mercury
as a Global Pollutant
more
info |
Madison, Wisconsin, USA |
Aug 21-23, 2006 |
2006 Midwestern States Risk Assessment
Symposium
more
info |
Indianapolis, Indiana, USA |
Sept 12-14, 2006 |
4th CIWEM Annual Conference
more
info |
St James' Park, Newcastle, UK |
Sept 27-29, 2006 |
CASA Science Symposium on Nitrogen
more
info |
Lake Louise Alberta Canada |
Oct 3-5, 2006 |
Emerging Issues in Air Quality Modeling
for Canada
more
info |
Calgary, Alberta Canada |
Oct 27-30, 2006 |
Eco Expo Asia
more
info |
Hong Kong |
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About This Newsletter
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This newsletter contains information gleaned from various sources on the web,
with complete links to the sources cited. Organizations cited are in no way affiliated
with Lakes Environmental Software.
Lakes Environmental Software is a leading environmental IT company which offers a complete line of air
dispersion modeling, risk assessment, emissions inventory, and emergency release software as well as training
and custom software services. With satisfied users located around the globe, Lakes Environmental Software will
continue to revolutionize the environmental software field.
For more information please visit our website at: www.WebLakes.com.
You may also contact us by phone at (519) 746-5995 or by fax
at (519) 746-0793.
All comments and suggestions are welcome. You can e-mail the editor at: newsletter@weblakes.com |
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