Install 52of 2"pla gas service off existing 2"pla 20# (01) located 6we curb on texas ave se, at 2812 texas ave se,west of 28th place se. Permit#141627, attached drawing condition of permit should be one year duration. Existing street trees within the work zone shall be protected as per ddot standards. Trenching operations shall be conducted so as to avoid injury to tree trunks, branches, and roots. No heavy equipment shall be used to remove existing hardscape within the drip line of the street tree(s). The drip line is defined as the ground area under the canopy of the tree. Excavations within limits of tree root spread shall proceed with care either by use of hand tools or with equipment that will not cause tree root damage. Ddot blue book 207 and 611