That first one is scary, for sure- Being Canadian and actually do specialize in indoor installations, aside from fan sizes, 99% of our systems look the same- they seem to use, whatever is on the truck. Nothing “standard “ - but that’s what you get for $749.00
Is Colorado not a regulated state?

Shocking!

The scary part is that they would be proud enough to take photos and release them to the public

Looks like untrained certified read some stuff on internet, Billy BF with a truck kind a mitigator, they are learning, I see a transfer from sheet metal to PVC, no manometer no labels, probably no insurance, but at $749.00 very difficult to be sustainable as a business, in USA courts will take them out sooner or later.

Oops i meant untrained uncertified

Thanks, Chrys, for sharing.
Hoping that this contractor could be encouraged to be trained on how to do things right and be brought into the fold. I wrote a brief note at their contact page in an attempt to begin that conversation.

No, we are not regulatory.

I did also, it resulted in a string of emails and no admission of wrongdoing... :(

Sorry to hear that, Chrys.
I realize that your hands are tied and it must be frustrating.

To all... (copying my comment from another thread)
Continuing to collect, and where possible, to document these situations (esp. if actually attempted and photos are available) is important to show legislators/regulators why appropriate better oversight may be needed.
Keep us all informed as to anywhere there are efforts by, say, local radon professionals and/or public health officials to move in a positive direction of requiring things such as training, certification, licensing, and reasonable enforcement. Support for those efforts may be available. Not promising help, but if no one asks for it, it's even less likely.