tender for survey, maintenance and regular cleaning/de-silting work of trunk and branch sewer of internal diameter 150 mm dia to 1200 mm dia including minor repairing of sewer pipe of all diameter, raising of manhole chamber to road level ,replacement of damaged manhole cover with new cover, minor repairing of manhole/chamber in teliarganj ,mehdauri , engineering college, old katra , ganganagar , ashok nagar , rajapur, muirabad,civil lines -i and civil lines-2 wardsalong with regular cleaning and maintenance of interceptor sewer of 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 of all labour,material, safety equipments and t&p required for successful completion of the work as per direction of engineer-in-charge.