Lakes Environmental Newsletter
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Monthly Newsletter - October 2020 Edition

3 Security Risks of Remote Work (And How to Solve Them)

Working from home or remotely has quickly become an essential practice for many businesses and although it has proven to be beneficial both for employers and employees, there comes with it a few risks that can endanger any business. Read on to learn more about these risks and how to avoid them.

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Unsecure Networks
An inherent, and often overlooked, risk of working outside your office is that you’re probably going online on unsecure networks. Public WiFi connections and even your own home WiFi often lack the necessary security protocols to make sure that your online data and activity aren’t being logged, stolen, or sold by 3rd party intruders.

Phishing Attacks
Phishing attacks are online scams often in the form of deceptive and sophisticated emails or websites disguised as official communication from a trusted source. Already a major security threat before businesses moved to remote work operations, they are more prevalent than ever.

Password and Security Management
With all the work emails, online logbooks, and cloud services that most remote work employees have to juggle, it’s easy to see why just using a favorite password that you’re guaranteed to never forget is tempting. But it’s those momentary lapses of judgment that hackers and bad actors are counting on to get access to your log-in credentials and personal data.

To learn about simple and effective solutions to these problems, continue reading here on the Tauria blog. Tauria is the world's first fully encrypted, all-in-one communication platform that ensures the security and privacy of user data. Unlike available tools on the market, Tauria combines the capabilities of a video conferencing tool, webinar, messaging platform, file storage vault, and scheduling calendar in a secure, cloud-based solution. Learn more at

Lakes Environmental Hosts Air Dispersion Modeling Webinars for A&WMA

Lakes Environmental recently presented two webinar series on air dispersion modeling topics for the Air & Waste Management Association. Each webinar included two sessions covering the basics of different air dispersion models:

  • Air Dispersion Modeling with AERMOD
  • Puff Modeling with CALPUFF & SCICHEM
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The webinars were presented by our senior instructors Dr. Jesse Thé, Ph.D., P.Eng. and Mr. Michael Hammer, CCM. They were joined during the Puff Modeling series by special guests Prakash Karamchandani of Ramboll and Douglas Henn of Xator Corporation to discuss the SCICHEM model.

Recording of the Air Dispersion Modeling with AERMOD webinar is available for purchase through A&WMA’s Online Store.

If you would like to learn from our senior modeling experts, consider attending one of our online courses! More information is available on our website.

Online AERMOD Course – Jan 19-20, 2021

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Don't miss out on our next 2-day online AERMOD course taking place on January 19 and 20, 2021 from 8:30am to 5:00pm (Central Time). Even with online courses, we limit attendance to ensure the highest level of training is provided.

Register and pay today before space is gone!


AERMOD (Jan 19-20, 2021)



Just Announced! Online CALPUFF Course – Jan 26-27, 2021

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Our recently announced November CALPUFF course is already full! We're pleased to announce an additional 2-day online CALPUFF course on January 26 and 27, 2021 from 8:30am to 5:00pm (Central Time).

Space is limited so please be sure to register early!


CALPUFF (Jan 26-27, 2021)



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Distance Limitations of AERMOD

When conducting an air dispersion modeling analysis with AERMOD, a common question arises as to what limits – if any – exist on where calculations can be performed by the model. Understanding the range of the model’s validity is important in interpreting results.

Minimum Distance

AERMOD has three primary checks when calculating the minimum distance between a source and receptor:

  1. Within 1 meter of POINT sources
  2. Within an exclusion zone of 1 meter + 2.15 * σY (initial lateral plume dimension) around a VOLUME source
  3. Inside the boundary of an OPENPIT

The volume source exclusion zone is based on the source’s effective radius estimated by multiplying the initial lateral plume dimension by 2.15. In AERMOD View, the exclusion zone can be plotted as a circular boundary around each volume.

Modeling Tip picture
A series of volume sources with exclusion zones displayed

Maximum Distance

AERMOD places one limitation on maximum calculation distance – when the FASTALL or FASTAREA non-default model options are employed, the model limits calculations to within 80 kilometers of the source. For modeling done without FASTALL or FASTAREA, the model has no effective limit on maximum distance.

Caution is advised, however, as the model’s makeup as a steady-state plume model is best situated to performing calculations in the near field. Regulations in the United States, for example, only recommend use of AERMOD within 50 kilometers of the source. Care should be taken to ensure the model is employed in the proper manner.

The AERMOD output file prints a list of source-receptor combinations excluded from calculations. Modelers can review this file (*.ADO in AERMOD View) to confirm the exclusions.

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AERMOD Output File Example Listing Excluded Receptors



Seeking Refuge in the Climate Emergency

October 5, 2020 - Archaeologists estimate that the I-Kiribati have been living on their islands in the central Pacific Ocean for 2,000 years. Former President Anote Tong estimates that they have less than a hundred years to find a new home. Because of the islands’ structure, Kiribati - along with the Marshall Islands and the Maldives - is in a group of nations that are particularly vulnerable to the rising seas, king tides, and intensifying storms occurring as a result of climate change, Tong said in a conversation with Slate journalist Joshua Keating.

Read more →

Natural Debate: Do Forests Grow Better With Our Help or Without?

September 24, 2020- Nations around the world are pledging to plant billions of trees to grow new forests. But a new study shows that the potential for natural forest regrowth to absorb carbon from the atmosphere and fight climate change is far greater than has previously been estimated.

Read more →

Additional Environmental News

Visit the Environmental News Network (ENN), the most dependable online environmental news source!



2020 Conference Schedule

National Association for Clean Air 2020 Annual Conference
November 16-20, 2020 | Virtual Event

Learn more →


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