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shutdowns, modifications, etc. shall be in writing to the Owner with a copy to the Engineer. C. The construction progress schedule required under Section 0 13 11 shall reflect the conditions presented in this section. 1.03 DEFINITIONS AND TERMS A. Plant Operational Constraints: The constraints to performance of the work required because of plant operations which must be maintained at all times are identified in this section. Cumulative plant operational constraints which substantially delay the Contractor beyond the constraints identified in this section shall be treated as excusable delays. These constraints shall be included in the Contractor's progress schedule. B. Construction Scheduling Constraints: The constraints to performance of the work required because of special sequencing with other parts of the work, calendar time constraints and special testing, commissioning and work procedures are identified in this Section. These constraints are in addition to the standard procedural constraints such as shop drawings, testing, commissioning, training, etc and the above plant operational constraints. These constraints shall be included in the Contractor's progress schedule. C. A shutdown is defined as that period of time during which a normal function and activity of the water treatment plant cannot take place. Prior to any shutdown, the Contractor must have sought and received written permission from the OWNER that the proposed shutdown is acceptable. Prior to granting permission, the OWNER will review the detailed shutdown plan prepared by the Contractor that includes a shutdown schedule, planned sequence of work, milestones and projected times of completions of activities, any anticipated problems, Contractor's supervisory personnel, actions desired of the OWNER and Engineer's staff, and contingency plans. The shutdown plan must be submitted in sufficient time for the OWNER'S review, consideration, and coordination with the OWNERS operations staff. This shall be a minimum of 21 days prior to the proposed shutdown. Allow sufficient time for review and resubmittal of the shutdown plan until acceptable to the OWNER. An acceptable shutdown plan prepared by the Contractor is fully descriptive of the work and in compliance with the Contract Documents. D. Operational: To be considered operational, an existing facility or facility component must be functional in all manners intended for its use, at its rated capacity. For a new facility to be considered operational, it must be installed, tested, and if required by the Contract, OWNER personnel must be trained in the facilities operation and maintenance. E. Special Conditions: Certain special conditions, if any, related to performance of the work are identified in this section. If they affect the scheduling of the work, they shall be included in the Contractor's progress schedule. 1.04 SUBMITTALS A. Submit, in accordance with Section 01340, shop drawings showing details of all L) temporary services, bypasses and tie-ins to existing systems. 01014-2