Lakes Environmental Software
Volume 7 - Issue 07 Monthly Newsletter - July 2006
 
News & Events
Upcoming Courses
Monthly Modeling Tip
News from Our Partners
This Month’s Articles
Conferences & Tradeshows
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News & Events

Lakes Environmental at A&WMA 2006

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.

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

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.

AERMOD & ISCST3 Courses

Sep. 14-15, 2006 Montreal, Québec Outline Register
Sep. 21-22, 2006 Denver, Colorado Outline Register
Oct. 12-13, 2006 Boston, Massachusetts Outline Register
Nov. 16-17, 2006 Orlando, Florida Outline Register

CALPUFF Courses

Dates to be Announced
Outline Register
For more information on these courses, such as registration information and course outlines, please visit our website: https://www.weblakes.com/courses.html.

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

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:

  • 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.
  • 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).

  • 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.
  • 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.

  • 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)

  • 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!

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

Addlink Software Cientifico - Spain & Portugal

www.addlink.es

First Training Courses on AERMOD and CALPUFF to be Held in Barcelona this November

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!

AWN (Air Water Noise) Consultants Pty Ltd - Australia

 www.awn.com.au

Upcoming Air Dispersion Modeling Courses to be Held in Australia

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

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.
Read Article
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
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
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.
Read Article
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
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

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

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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