I have no information about which company did the installation of the new gas storage tank and modified vent location. Whoever it was were just following instructions, within the limits of code, as they understood it.
I contacted a bunch of petroleum contractors via email, to see if it would be possible for the vent location to be moved. I chose them randomly, and sent them all the same inquiry. Some were more willing to engage than others. My inquiry read:
” Hi. I am wondering if someone could answer a somewhat broad question for me ?
I live next to a gas station that was recently renovated. The vents for the underground storage tanks are now 4′ from the property line, adjacent to my doors and windows. As a result, I have the infiltration of gasoline vapours into my home during a tanker refuelling, depending on the wind direction.
Is it possible for the vent location to be moved ? If so, what does this entail, and what is the approximate expense ?
I understand that your answer is not a quote, and obviously the logistics would depend on the specifics of the station. Any general information regarding this matter would be appreciated.
I have reported this to the TSSA and the Ministry of the Environment many times.
The most minimalist reply I received was this:
“The vents can be relocated by digging up the area and modifying the route of the piping.”
Others were more helpful:
“If the MOE and TSSA are unable to help, I would contact the Fire Prevention Department . There is no limit to the height of the vents, so they could be raised higher to be above any openings. Hope this helps.”
” So sorry for your issue. The only other option would be to have another contractor inspect it.”
This person sent a diagram of a truck loading and advice about how to identify the vapour recovery hose in use.
This contractor said: ” I would recommend the vents be extended to get the vapours away from your door/windows. It is potential (sic) a serious health concern with the chemical compounds in fuel vapour.”
This contractor offered : “Please note that the vents appear to meet the code. The issue of vapour recovery is an environmental one. Even if they use the vapour recovery, if they can drop fuel too fast (as is the case because the drivers are paid by how many loads they deliver in a day), the vapour recovery can’t handle the vapour flow rate. They either have to slow the flow or install larger vapour recovery.”
More about that: ” The placement of the tank vents, while legal, was a bad design, but there is a requirement that the site have and use a vapour recovery system on the gasoline tanks. If they are using it, and you are getting fuel odours during a fuel drop, it is undersized for the fuel drop rate. They either have to increase the capacity or slow the drop rate. This falls under Environment not TSSA and they are notoriously poor at pursuing these cases.”
One of them sent a couple of excerpts from the fuel handling code. I learned how far an underground storage tank had to be from a property line (a question the TSSA would not answer for me): 1.5 meters. That’s 59.1 INCHES.
2.2.1. Location of tanks
An underground storage tank shall not be installed
(a) inside or under any building;
(b) less than 1 m from a building;
(c) less than 1.5 m from a property line;
(d) less than 60 cm from an adjacent underground storage tank;
(e) less than 15 m from drilled water wells;
(f) less than 30 m from a dug water well or waterway; and
(g) where the loads carried by a building foundation or supports could be
transmitted to the tank.
So now – would you feel safe eating anything planted in my garden ? The brightest areas are closely adjacent to those vent pipes…