Hello, We have a Northwood maple tree in our front yard that was planted a couple years ago before we bought the house. The tree is only 1-2 feet away from the underground Xcel gas line and we're wondering if that is too close? I contacted Xcel and Connexus (because there are underground electrical lines nearby too, and they only have tree planting recommendations for overhead lines. They both said to contact you for recommended planting distance from underground lines. How far away from underground electrical and underground gas lines do we need to be to replant/move this Northwood maple tree? It looks like if we put it halfway between each line, it gives 7 feet on either side of the tree. There was a previous ash tree that was mature size and planted only about 2 feet away from the underground gas line, and we see a lot of neighbors that have tree and shrubs right by underground lines too. Can you also let me know if there are any shrub proximity planting recommendations for underground lines? Connexus said that larger shrubs might not be able to be planted near underground lines and I would have to ask you if smaller shrubs are okay to plant near or on top of any type of underground lines. Thank you!