Burried network cables and electrical wires interferencies over 80m+

Hi

I'm helping a friend setup a workshop on his property and extending/remaking some wiring for a dependency. We have to lay and burry electrical cables for all that, some simple 2.5mm² wires and some larger 16mm² for the workshop.

We would like to add some network cable in a differents sheath in the same trench ( 10 cm wide ) but are worried that it may be too close and generate to much noise to have a good connection. The whole length will be somewhere between 60m and 100m long.

Is there some network guru that can help me with this I'm just a dev so way out of my league here :D

Thank guys!