Specifications include, but are not limited to:Iowa 15 tile bore, All labor, equipment and materials necessary to plug and abandon the existing clay field tile in the west ditch under IA 15. Connect existing 8" clay field tile in the west ROW 1' outside of DOT ROW to the proposed 15" CMP. At the same connection, there shall be 4" PVC riser with a cap cut to a height 3' above grade to provide an inspection access. Continue east by open cutting approx 27' of 15" CMP to the boring location. Bore approx 70' of 15" CMP under IA 15, then open cut an additional 25' of CMP to the east edge of DOT ROW. The outlet into the drainage ditch is to be installed by the property owner on the west side.US 169 tile bore All labor, equipment and materials necessary to perform the directional bore approx 40' of 12" CMP crossing US 169 on the south side of an existing culvert located at 864+47.8 station. Excavation shall be used to open cut a trench for the remaining portion of the projects to the west and the north from the boring location