The 5x5 inch vent (needed for my NGV fueling station called "Phill")
The vent is the only thing needed outside of the garage, the rest of the Phill is installed inside of the garage and is 100% safe !
No noise or vapors will come out of the vent, only warm air less than a gas dryer vent.
A picture of the proposed location, very hidden and not obtrusive at all to the overall appearance of the neighbourhood. As the trees will grow taller it will be even more hidden than it is already.
My letter appealing the intial denial can be read here.