bids are invited for flushing / cleaning of various bps ugr’s at g.k-i ward under greater kailash constituency. - flushing /cleaning of 12 nosugr’s at g.k.-i ward under greater kailash constituency as given below:1. kailash hill bps.2. hemkunt colony bps.3. chirag enclave bps.4. epr colony g.k. enclave –i bps.5. pomposh enclave bps.6. dda flat masjid moth ph-i bps.7. dda flat masjid moth ph-ii bps.8. dda flat panchsheel enclave bps.9. panchsheel park oht bps.10. dda flat shahput jat bps.11. mount kailash bps.12. kailash kunj bps.cleaning of underground sump, over head r.c.c. tank(independent staging) including disposal of slit and rubbish, all as per direction of engineer-in-charge. the cleaning shall consist following operations:-(i)tank shall be emptied of water by pumping & bottom shall be cleaned of silt and other deposits.(ii) entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water.(iii) chlorination of rcc internal surface by liquid chlorine.(iv) the treated surface shall be dried using air jetting and all loose particles shall be removal from the surface.(v) finally the surface shall be treated with ultraviolet radiation etc. as per direction of engineer-in-charge.dsr civil item no-14.78 total quantity : 1