A/R M/O Water Supply under Sub Division NO.II, NACD, APWD, Mayabunder. SW- Replacement of filter media for water treatment plant at Tugapur No.2, Tugapur No.6, Webi, Rest Camp under Sub Division No.II, NACD, APWD, Mayabunder.

Amount

Removal of silt up sand from the filter bed with the lift of 3.00 mtr and carraige by mechanical means i/c loading & unloading and stacking at opencourtyard of Barood Godown for an average lead of 5 km & lift of 3.00 mtr.

Removal of old damaged stone aggregate of size from 63mm to 13.2mm from the filter bed with a lift of 3m and carriage by mechanical means including loading & unloading and stacking at opencourtyard of Barood Godown for lift of 3.00 mtr and an average lead of 5.00 km.

Supply of stone aggregate of various sizes to treatment plant including loading, unloading and stacking at site etc. and cleaning, scrapping and removal of Algae from the filter bed, wall and laying of stone aggregate in the filter bed with a lift of 3.00 mtr and for a depth 0.30m and as per the direction of Engineer-in-charge.

Stone aggregate 63mm to 45mm

Stone aggregate 53mm to 22.4mm

Stone aggregate 13.2mm nominal size

Supply of river sand to treatment plant including loading, unloading and stacking at site etc. complete and thereafter cleaning, scrapping and removal of Algae from the filter bed, wall and resanding the filter media for a depth 0.60 to 0.70 m and as per the direction Engineer-in-charge.

Supplying and resanding of River sand 0.20 to 0.60 mm and conforming to zone IV in filter bed.