If you cannot view the video above go to: http://youtu.be/GvzxG47D0z8
Each month we publish a newsletter titled IAQ Website of the Month. The excerpt below was originally published in the November 2013 newsletter.
You might know that a grain of pollen is bigger than a mold spore, which is bigger than a bacterium, which in turn is bigger than a virus. But have you ever seen them all side-by-side?
This month’s featured website, “Cells Alive”, includes animations and interactive tools to help you get a better perspective on things too small to see with the naked eye.
The best part of the website is the “How Big?” tool. Zoom in to see the relative difference in size between a dust mite and a rhinovirus.
Other worthwhile pages on the site include:
To learn more about microbiology, visit this month’s featured website: Cells Alive.
To subscribe to this newsletter click the following link: IAQ Website of the Month.
If you cannot view the video above go to: http://youtu.be/SKcHZeUQmv8?list=UUGBK7T-q97a7Bd2rSYxO_lA
If you cannot view the video above go to: http://youtu.be/xlCYRnsszpU
Each month we publish a newsletter titled IAQ Website of the Month. The excerpt below was originally published in the October 2013 newsletter.
OSHA uses Permissible Exposure Limits (PELs) to regulate worker exposure to airborne contaminants. Many of its PELs are “outdated and inadequate for ensuring protection of worker health”. That’s a quote from OSHA itself, not some opinionated blogger!
Most of the current PELs are state of the art… for 1968. Admittedly, it’s hard to jump through all the hoops required to update PELs. The lack of updates hasn’t hindered other organizations from incorporating the latest research, technology and experience. OSHA has now created a list of its “outdated” PELs with side-by-side comparisons to the following occupational exposure limits:
- American Conference of Governmental Industrial Hygienists (ACGIH®) Threshold Limit Values (TLVs®)
- National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limits (RELs)
- California Division of Occupational Safety and Health (Cal/OSHA) Permissible Exposure Limits (PELs)
Now you don’t need to thumb through four different publications to see the various occupational exposure limits. The coolest part? In the past, you needed to purchase the TLVs® each year from the ACGIH®. Now OSHA gives them to you for free.
Note the difference between occupational exposure limits for two common IAQ contaminants:
- OSHA PEL: none
- ACGIH® TLV®: 0.3 ppm ceiling
- NIOSH REL: 0.016 ppm up to 10-hour TWA (carcinogen), 0.1 ppm 15-minute ceiling
- Cal/OSHA PEL: 0.75 ppm 8-hour TWA, 2 ppm short term
- OSHA PEL: 50 ppm 8-hour TWA
- ACGIH® TLV®: 25 ppm 8-hour TWA
- NIOSH REL: 35 ppm Up to 10-hour TWA, 200 ppm ceiling
- Cal/OSHA PEL: 25 ppm 8-hour TWA, 200 ppm ceiling
To view the entire list of chemicals, visit this month’s featured website: OSHA’s Annotated PELs.
Please note: occupational exposure limits are not designed to be protective of the entire population. In our classes you will learn about other, more protective exposure guidelines.
Each month we publish a newsletter titled IAQ Website of the Month. The excerpt below was originally published in the September 2013 newsletter.
On my bookshelf, I have a tall and dusty stack of Indoor Environment CONNECTIONS newspapers that I have read through the years. If you’re not familiar with the publication, it is “The Newspaper for the IAQ Industry.” Whereas other publications on my shelf focus on research, IE CONNECTIONS has always targeted the practice of indoor air quality.
A few months ago, the publication went to an online-only format with articles being posted on a regular basis. That’s good because I am running out of room on my bookshelves!
With the new format, you need to visit the website regularly to check out updated content. My tip: use iGoogle to manage feeds from IE CONNECTIONS and all your other favorite websites and blogs.
To give you a flavor of the content on the website, here are some articles I thought you would enjoy:
- Carbon Monoxide May Pass Easily Through Drywall
- Molecular Entrapment – A New Way to Capture Airborne Mold Spores
- Studies Find Cooking with Gas Is Major Contributor to Poor IAQ
Do you want more? Read old print issues dating pack to 1999 in their Archive.
To view this months featured website, visit Indoor Environment CONNECTIONS.
I get a lot of requests to post other people’s content on my blog. As MY blog, I usually just post MY stuff. I’m making an exception today because I came across a video about radon that was very well done. The graphics are great and it does a good job of explaining radon and radon mitigation. The video takes some artistic liberties, but all in all, a good intro video to radon.
Each month we publish a newsletter titled IAQ Website of the Month. The excerpt below was originally published in the July 2013 newsletter.
How do you perform an indoor air quality assessment? There is no single right answer. In fact, you find a wide range of quality and pricing when you compare the strategies of different consultants. Is there anyone we can emulate?
The National Institute for Occupational Safety and Health (NIOSH) performs government sponsored air quality assessments on certain properties. These “health hazard evaluations” (HHEs) are performed at no cost to building owners or employers. I love to read the reports from HHEs related to indoor air quality to sharpen my skills.
These reports uncover:
- Equipment used by NIOSH researchers
- Investigative procedures
- Sample questionnaires
- Recommendations based on the problems found
- Pictures of common indoor air quality issues
Through the years, NIOSH has performed over a thousand health hazard evaluations. Because not all reports are related to indoor air quality issues, you’ll need to do some searching. Below are links to recent reports related to indoor environmental quality:
- Evaluation of indoor environmental quality at an accounting office, Florida 2013
- Lighting, indoor environmental quality concerns, and job stress at a call center, California 2013
- Assessment of mold and indoor environmental quality in a middle school, Texas 2011
- Evaluating a persistent nuisance odor in an office building, Maryland 2011
- Cancer among occupants of two office buildings, Ohio 2009
To visit this month’s featured website, click NIOSH Health Hazard Evaluations. If you would like to search reports for those related to indoor environmental quality, click IEQ and scroll toward the bottom of the page.
If you cannot view the video above go to: https://www.youtube.com/watch?v=P7yN-Rlopwo&list=UUGBK7T-q97a7Bd2rSYxO_lA
If you cannot view the video above go to: https://www.youtube.com/watch?v=YeaYPpHz4m8&list=UUGBK7T-q97a7Bd2rSYxO_lA