Synopsis for Erbil Airbase Taxiway

The contractor shall be responsible for the design, material, labor, and equipment to accomplish the following two phases of this requirement:
Phase 1
This portion of the work is for the emplacement of a concrete pavement taxiway matching roughly in dimension to the USG provided concept drawings. The work consists of but is not limited to the following:

• All existing conditions survey and design documents.
• Geotechnical report of the existing soil characteristics and to ensure no unfavorable conditions under the proposed alternate taxiway.
• Demolition, removal and disposal of an existing pump house structure.
• The proper plugging and abandonment of a water well of unknown depth.
• Removal of any existing piping or plumbing infrastructure that is associated with the water well.
• The accommodation or potential reroute of an existing fiber optic line.
• Excavation and haul of site materials as necessitated by Contractor provided design documents.
• Preparation and testing of subgrade as outlined in Contractor provided design documents.
• Providing engineered fill and testing as outlined in Contractor provided design documents.
• Re-shape: cut, fill and contour of the area to preclude the ponding of water.
• Concrete Pavement (PCC) to include all formwork, reinforcement steel, dowel bars, tie-bars, crack inducers (as necessary), saw cutting (in most cases widened joints), joint filler, backer rod, pourable sealant, airfield grade striping and visual navigation aids as outlined in the Contractor provided design documents.
• Shoulder work and Safety Zone work as outlined in the Contractor provided design documents.
• Provide and install a pavement subsurface drainage system along the proposed taxiway.
• Prepare existing pavement with smooth saw cuts to ensure that the transition from the new taxiway to the existing pavement is smooth.

Phase 2
This phase will commence upon the completion of Phase 1.

The Contractor will cut existing taxiway (R02A) in order to emplace a culvert that will convey water to the drainage system on the western side of Erbil International Airport (EIA). The existing asphalt is between 9 inches and 10.5 inches (228.6 mm to 266.7 mm) thick. The contractor will ensure that the cut section is repaired to accommodate the same aircraft utilized in the Phase 1 design, using asphalt instead of concrete.

The service road along the west side of R02A will also need to be cut to emplace a culvert to convey the water into the existing drainage system. The service road is a gravel/asphalt road. Properly shape and grade the surrounding terrain to ensure the tie in to surface drainage structures that enables positive drainage with minimal maintenance. The contractor will ensure that the service road is repaired once the culvert is emplaced.

The Contractor will ensure proper barricades are emplaced and coordination with base management for the closure of both the gravel road and R02A.