Netaji Subhas Institute Of Technology Tender

1 Periodical maintenance, cleaning and desilting of rain water pipes, water collection/ gully chambers etc., associated with the re-charge pits as required. All complete as per the directions of Engineer-in-charge (Detail of recharge pits (28 Nos.) has been enclosed at Annexure-A).

2 Cleaning of filter media & recharge pits all complete as per the directions of Engineer-in-charge. The scope of work includes the following:- (a) Removal of leaves, polythene, organic/ inorganic waste materials etc. found deposited over the geotextile sheet. (b) Removal of existing old geotextile sheet. c) Taking out existing filter media of size 40-80mm brick bats, coarse sand & activated charcoal from recharge pits and stacking separately. (d) Repair and maintenance of recharge pits including cement plastering etc., as required. (e) Washing of filter media using pressure pump etc. (f) Removal of silt/muck found deposited in recharge pit. (g) Replenishing shortage of filter media of any size so that filter media is reset in full quantity. (h) Filling back filter media in proper layers. (i) Disposal of rubbish / malba / similar waste materials by mechanical means, including loading, transporting, unloading to approved municipal dumping ground or as approved by Engineer-in-charge for all leads including all lifts involved all complete as per the directions of Engineer-in-charge. This job will be completed within 30 days from date of commencement of contract. (Detail of recharge pits (28 Nos.) has been enclosed at Annexure-A)

4 Cleaning of filter media & sedimentation pit including the following:- (a) Removal of leaves, polythene, other organic & inorganic materials found deposited over the top layer of filter media. (b) Taking out existing filter media of size 40-80mm stone aggregate, 20-40 gravel and coarse sand from filter media pits and placing separately. (c) Washing of filter media using pressure pump of appropriate size. (d) Putting back filter media in filter media pits in proper layers of different sizes of media. (e) Replenishing shortage of filter media of any size so that filter media is reset in full quantity. (f) Removal any sit/muck found deposited in sedimentation pit constructed constructed for rain water harvesting system. All complete as per the directions of Engineer-In-Charge.