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Facility Owners & Managers Respond Favorably to -
  • "I have found this ( to be a valuable resource in my work, and have promoted the site to other colleagues in the field. " - T.E.

  • "Excellent illustrated U.S. EPA test methods."
    - Ted Saad,

  • "Thank you for this info. I have facilities in 18 states, and this will be very helpful." -FCR, Inc.

  • "OUTSTANDING!!! Please keep me on ALL your future news releases." - RDH, District Plant Manager

  • "This is a good site." -Engineer, DUKE ENERGY

Responses From Regulatory Agencies:

  • "Thanks Colleen, this will be really helpful and I will be using this site for stack testing companies." - Michigan Department of Environmental Quality (MDEQ)

  • "Thank you for the info. I have forwarded the email to the testing group at our agency." - Arizona Department of Environmental Quality (ADEQ)

  • "Thank you - I have forwarded this information to other interested parties in North Dakota." - North Dakota Department of Health-Environmental Health Section

  • "Thank you! I will pass it on to my contacts." - EPA

  • "Colleen: I've forwarded your information about to the manager of our stack testing section. Thanks" - South Carolina Department of Health and Environmental Control (SCDHEC)

  • "Thank you for the information, I will pass it along to others in my section."
    - Iowa Environmental Protection Division (EPD)

  • "Thank you for the directory! I will also pass it on to our other staff who may be able to use this directory in the future." - South Dakota Department of Environment & Natural Resources (DENR)

  • "Thank you, I'll forward this on to various potentially interested
    parties." - Arkansas Department of Environmental Quality (ADEQ)

A Comment from an Analytical Lab:

  • "It's about time somebody came up with a good site for the industry".
    - Air Sample Analytical Lab Owner, North Carolina
From an Internationally Recognized Calibration Gas & Equipment Company:
  • "I think your web site is a great resource for source testers and environmental professionals."
    -Mia Jensen, Praxair Specialty Gases and Equipment

From a visitor searching for a stack testing firm for their next project:

"One comment about searching the test firms from your site. The companies not including a web address or link are missing the boat. Some don't even have their phone number (very odd). So, tell the folks who sign up that a web link is very important especially since we are surfing the web for their services, logic has it that we would want to contact them by the web. Several companies lost an opportunity to bid on a stack test because I could not send them an email"
- Bruno Ferraro, Grove Scientific

" I like your site. The graphics on the side are helpful to identify the company logo you want, also the selections with descriptions are done well. And I like the ability to browse by choice of topic or company. Your site was easy for me to navigate."
- Anonymous

Stack Testing Firm Views:
  • "Keep up the good work! The site has really become a hit. I recommend it to everyone. Thanks"
    -Scott Miller, TRC Environmental Corporation

  • "Just wanted to let you know that I and several other people are enjoying seeing your web site grow and grow. I especially like the new edition to the supply section." - Florida

  • "Wow! Great website and a great job in programming. Well laid out. I think this will be useful to many companies. I really, really like the methods pictures." - North Carolina

  • "Just wanted to let you know that I still want to do a profile. I have just been too busy to get everything together. I have really looked forward to getting my newsletter. I get so excited when I see it on my e-mail. We have received so many calls from people who found us on I bid on more work and have made some real good money this year. Thanks again for including us on the site. I will call you soon on the profile. Thanks again," - D. L.

"As an internet user, it's easy to see what works and how many sites are too confusing and don't work. Yours is really great."

- Ken Ackerman, ABC Ice House

The man to call for dry ice - anywhere!

"I think this is no doubt the best resource I have ever found for finding companies who are doing stack testing or any professional testing services."

- Joseph D. Paresi, Madison Testing & Acquisition Services, LLC.

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Reviews and comments from visitors / users on Site Traffic Statistics is the largest stack testing reference source on the Internet and the most visited - with thousands of U.S. and international
visitors. The Active National Directory of Source Emissions Testing supports a state-by-state listing of air quality testing firms
located in the US & Canada. Industrial facility owners & managers can submit a FREE RFP and research or "shop" for stack testing
firms prior to requesting bids. Regulatory agencies & consulting engineers recommend this site & maintain contact lists. Stack
testing firms in need of equipment and services, searching for new clients or looking at the competition visit frequently.