The General Contractor shall, upon achieving seventy percent (70%) of the construction progress in accordance with Appendix No. 19, organize performance of the Works in accordance with the Schedule of systems (subsystems) delivery. The General Contractor shall, not later than upon achieving fifty percent (50%) of the construction progress in accordance with Appendix No. 19, submit to the Owner for approval this Schedule developed on the basis of the breakdown by the subsystems, provided by the Owner