Thats in your area Gar. Comcast has specs around here. fiber 24 inches, hard line 12 inches, drops 8 inches. the whole state of new jersey is 18 inches across the board. In pa the depths are depending on the system. The specs i provided was for bucks county. of course its dirt so it is what it is. At 4 inches you get a automatic pass from being charged. At that depth its easy to cut the drop with just a shovel. hell at 4 inches a lawn aeriater is taking that drop out.