tender for desilting of sewer line/storm line with super sucker machines having high pressure jetting pump of 400 lpm and suction capacity of 4200 m3/hour. including tracing of buried manholes, taking out silt/debris and disposal of silt, installation of pumps for flow diversion, roka/plugging stand by generator for pumping, gas detector, blowers for air ventilation, provision of safety equipment, traffic control, barricading, insurance of workmen plaster of manholes, conditional assessment of sewer line with cctv pre and post desilting through cctv survey by leser profiler and submitting 3 sets of cctv in cd as per satisfaction of engineer in charge (600 mm i/d)