tender for flushing / cleaning of various bps ugrs of cr park ward under greater kailash constituency ac-50. , flushing / cleaning of ugrs at cr park ward under greater kailash constituency as given below: 1. epdp bps, 2. d block cr park bps, 3. alaknanda bps, 4. epr colony gk-ii bps, 5. godavari apartment bps. 6. oth kalkaji bps 7. lig kalkaji bps 8. 11 block kalkaji bps 9. 6 block kalkaji bps 10. pocket 52 cr park bps 11. nri colony bps 12. shivalik apartment bps 13. aravali apartment bps cleaning of underground sump, over head reinforced cement concrete tank (independentstaging) including disposal of slit and rubbish, all as per direction ofengineer-in-charge. the cleaning shall consist following operations:- (i)tank shall be emptied of water by pumping & bottom shall becleaned of silt and other deposits. (ii) entire surface area of the sump shall then scrubbedthoroughlywith wire brush etc. and pressure washed with water. (iii) chlorination of reinforced cement concrete internal surface by liquid chlorine. (iv) the treated surface shall be dried using air jetting and all looseparticles shall be removal from the surface. (v) finally the surface shall be treated with ultraviolet radiation etc.as per direction of engineer-in-charge.