All materials, parts and supplies furnished by the contractor shall be new, and per the original system manufacturer’s part number for the particular system, or approved equivalent and suitable for the conditions and duties imposed upon them, to assure requirements of the existing system, design and performance. Substitutions, including rebuilt parts, may be done only with the prior written approval of the Facilities Supervisor. 1.1.2 Contractor will be expected to maintain stocks of materials, parts and supplies that should reasonably be expected to be needed, in performance of this contract or establish sources that will have them on hand in the local area. Delay in performing repairs because of the lack of materials, parts or supplies that should be expected to be locally available or failure of contractor to actively pursue the procurement of highly specialized materials, parts and supplies whose use could not be anticipated is sufficient reason for terminating the contract for default. 1.1.3 All materials, parts and supplies used in conjunction with this contract are subject to the approval of the Facilities Supervisor. If replacement parts have a long term delivery time, the Facilities Supervisor may approve rebuilding an existing part at his sole discretion.