Intall a high to low pressure reg station at the corner of alaska ave nw and kalmia road nw, 4x5 cut over main, permit#126456 wr#824624, attached sketch condition of permit should be one year duration. Trenching operations shall be conducted so as to avoid injury to tree trunks, branches, and roots. 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. Blue book 207 and 611."this project will require that a saw cut be made at the construction area and to excavate to the required depth to make the repair then to start backfilling with a dry, clean fill in 8 inch lifts. They will use a vibratory tamper on each lift. At subgrade they wil use 30 psi concrete and vibrate the concrete. Restore fully in kind any disturbed sidewalk/roadway to match existing finish condition. All work will adhere to all dc guideslines, standards and specifications."