survey, maintenance andregular cleaning / de-silting work of trunk and branch sewerof internal diameter 150 mm dia to 1200 mm dia includingminor repairing of sewer pipe of all diameter, minor repairing of manhole/chamber inteliarganj , mehdauri , engineering college, old katra , ganganagar , ashok nagar , rajapur, muirabad ,civil lines -i and civil lines-2 wards along withregular cleaning and maintenanceof interceptor sewerof dia. 150 mm to 1200 mm from phaphamau bridge to rajapur stp and interceptor sewer of dia. 150 mm to 1200 mm from ashok nagar to rajapur stp in sewerage district – d of nagar nigam prayagraj by using super sucker and sewer suction cum jetting machine including supply ofall labour, material, safety equipments and t & p required for successful completion of the work as per direction of engineer-in-charge.