tender for survey, maintenance and regular cleaning / de-silting work of sewer of internal diameter 150 mm dia to 1200 mm dia including minor repairing of sewer pipe of all diameter, minor repairing of manhole/chamber in colnelganj , allenganj, medical college, george town, tagore town , mumfordganj , new katra , daraganj , buxi khurd , alopibagh and madhwapur wards along with regular cleaning/desilting and maintenance of interceptor sewer of dia. 150 mm to 1200 mm from hanuman mandir to daraganj sps and interceptor sewer of dia. 150 mm to 1200 mm from nagvasuki mandir to daraganj sps(including prabhu ghat drain interceptor sewer) on dashashwamedh ghat road 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