routine maintenance / operation of epbax exchange , splicing of ofc , inspection and span tightening of laying of ofc cable and all related communication equipment / system installed at salal power station , fixed charges , routine maintenance / operation of epbax exchange , surveillance equipments , splicing of ofc , inspection and span tightening of laying of ofc cable and all related communication equipment / system installed at salal power station ( as per scc and scope of work ) ( payments towards labour wages only inclusive of gst@18% ) , to be quoted by contractor , service charges: for providing services ( mentioned in item no . 01 ) towards contractor profit , overheads , supervision charges , taxes , duties , cess levies , statutory requirement charges etc . ( as per scc and scope of work ) , providing of consumables/materials for smooth execution of above work ( as per scc and scope of work )