tender for operation and maintenance work of ips sector ecotech-6 (for 36 months) in greater noida - operation and maintenance of the various units of i.p.s. and consumables, disposal of plant residuals (screenings sludge), manpower required, general maintenance of civil structures, painting of civil structure (once in a year), horticulture work, preventive and breakdown maintenance of mechanical equipment, electrical items, field instruments etc., cost of collection, analysis, reporting, monitoring and maintainging log book of pumps & record of outgoing sewage daily collected at least for one time a day from the entry and exit of the ips units thereon (excluding power and diesel for dg set.)