tender for annual maintenance of of sewerage scheme in old iti rohtak `removing of silt from exixting manholes cleaning of line and repair of manhole in old iti rohtak and all other works contingent thereto .a/c rs. 01.90 lacse/m3800/- time limit: 01 (one) month - removing of silt from inside of manhole including the cost of loading, unloading, cartage and shifting of malba/sludge from the site, tandp, safety equipment etc. complete in all respect, as desired and directed by the engineer-in-charge.all the safety equipment such as rope, safety belt and oxygen mask etc. will be provided by the contractor to the workers/sewerman otherwise he will be held responsible in case of any misshaping/accident.the contractor will ensure that all the sewer man/workers are insured from any authority/govt. insurance company.