Once again it's weird gotta agree with willy. Lol. I work for a hydro vac company yes supposed to be 3' but have seen them anywhere from 8" to 6'
Did one a couple weeks ago the phone was only 4' below surface. In the middle of his driveway
Get a locator and a hydro vac to expose. A hydrovac is pricey but way cheaper than a line strike.
Magnet and willy are right.... If you are running new service an inspector will specify your local regulations. But the general standard is 3' and I wouldn't consider putting anything shallower than that.. If you wind up wanting to put anything else in that area or need to change grade on the property it will only cause you grief
Lots of supposed to be rules. But after working I. The industry for a while you realize they are merely guidelines it seems. Have seen gas lines crossing resting on one another have seen power crossing laying on pipe. Lol. Get the lines located and expose with a hydrovac or a hand shovel.
If burying new lines call first to make sure you have no crossings to deal with.
Curious about the gas line myself...if my house build goes threw I will be switching to natural gas from propane. As far as the electrical.... CODE is 2' non vehicular and 3' where there is vehicles driven on it. A good rule of thumb is 3' min. Not sure on the mixing of the two lines in the same trench but am curious!
You can put the two lines in the same trench but the gas has to be at least 18" deeper ten the electrical line, don't forget to back fill with sand first
in Calgary area they can be at the same.depth. Keep about a foot away diagonally. If they cross each other keep gas 12- 18" above power. Put power in a conduit 2" depending on your cable size. Conduit is cheap and can save digging up yards and driveways. I see the gas directly on top of the conduit all the time but not cool in my opinion.