custom bid for services - cleaning and desilting of gully trap chamber as per item 1 of schedule of quantities , custom bid for services - cleaning of chocked sewer line by diesel running vehicle mounting hydraulic operated high pressure suction cum jetting sewer as per item 2 of schedule of quantities , custom bid for services - providing services of belder cum sewer man equipped with necessary t&p as per item 3 of schedule of quantities , custom bid for services - cleaning and removal of dirt soiled material of storm water drains manually as per item 4 of schedule of quantities , custom bid for services - lifting of chamber cover and cleaning and desilting and removal of sludge silt brick bat debris of sewerage chamber and etp chamber as per item 5 of schedule of quantities , custom bid for services - earth work in excavation by mechanical means hydraulic excavator or manual means as per item 6 of schedule of quantities , custom bid for services - providing and laying in position cement concrete of specified grade including the cost of centering and shuttering as per item 7 of schedule of quantities , custom bid for services - providing and fixing on wall face unplasticised rigid pvc rain water pipes as per item 8 of schedule of quantities , custom bid for services - providing and fixing on wall face unplasticised pvc moulded fittings accessories as per item 9 of schedule of quantities , custom bid for services - providing and fixing on wall face unplasticised rigid pvc rain water pipes as per item 10 of schedule of quantities , custom bid for services - providing and fixing square mouth sw gully trap class as per item 11 of schedule of quantities , custom bid for services - providing and fixing square mouth sw gully trap class as per item 12 of schedule of quantities , custom bid for services - providing and laying non pressure np2 class rcc pipes as per item 13 of schedule of quantities , custom bid for services - making connection of drain or sewer line with existing manhole including breaking into and making good the walls as per item 14 of schedule of quantities , custom bid for services - constructing brick masonry chamber for underground ci inspection chamber and bends with bricks in cement mortar as per item 15 of schedule of quantities , custom bid for services - constructing brick masonry chamber for underground c i inspection chamber and bends with bricks as per item 16 of schedule of quantities , custom bid for services - providing fixing and laying of hdpe underground pipe line of 100 mm to 150 mm dia join may be done as per item 17 of schedule of quantities , custom bid for services - repair of existing hdpe underground pipe line of 100 mm to 150 mm dia with electro fusion machine as per item 18 of schedule of quantities , custom bid for services - repair of existing ppr underground pipe line of 100 mm to 150 mm dia with ppr jointing machine as per item 19 of schedule of quantities , custom bid for services - repair of existing ductile iron di underground pipe line of 100 mm to 150 mm dia with proper jointing machine as per item 20 of schedule of quantities