In general, all materials and equipment to be furnished by Contractor must be of good quality, new and unused, undamaged, and shall be constructed and installed as required in the Contract Documents and of the types of equipment and materials as specified. It is the Contractor’s responsibility to protect existing construction. In addition, daily removal of debris and repair of any damage due to work under this Contract is considered within the scope of Work and is the responsibility of the Contractor. Contractor shall be responsible for the performance of all of the Work for the Project. Unless specifically prohibited by the Contract Documents, Contractor may retain qualified and responsible subcontractors for the performance of parts of the Work. Such subcontractors must be reasonably acceptable to the District. Contractor shall be fully responsible to District for all acts and omissions of the Contractor’s subcontractors, suppliers, and other individuals or entities performing or furnishing any of the Work provided by or under the control of the Contractor, just as Contractor is responsible for Contractor's own acts and omissions. No acceptance by District of any such subcontractor, supplier, or other individual or entity, whether initially or as a replacement, shall constitute a waiver of the right of District to the completion of the Work in accordance with this Contract Documents. Contractor shall be solely responsible for scheduling and coordinating the Work of subcontractors, suppliers, and all other individuals or entities performing or furnishing any of the Work, which are under the control of Contractor. All Work must be done in accordance with best trade practices using qualified workmen. All Work shall be performed in a manner that does not void any manufacturer’s warranty. All engineering work and plan preparations for shop drawings and other Contractor submittals shall be the responsibility of the Contractor, who shall utilize qualified and licensed engineers for such work.