procurement of 67 nos. new portable compactors (pcs) and 23 nos. new hook loaders (hls) along with 5 years operation and maintenance (o&m) of the same under central zone of kolkata including periodic overhauling and maintenance of the shutter and washing pump of the respective compactor stations (cs).- supply of 10.5 cum portable compactor (pc) 2 supply of hook loader (hl) capable of lifting 10.5 cum pc 3 1st year o&m rate of 67 nos. new pc and 23 nos. new hl (monthly o&m cost of 67 nos. new pc and 23 nos. new hl to be entered ) 4 2nd year o&m rate of 67 nos. new pc and 23 nos. new hl (monthly o&m cost of 67 nos. new pc and 23 nos. new hl to be entered ) 5 3rd year o&m rate of 67 nos. new pc and 23 nos. new hl (monthly o&m cost of 67 nos. new pc and 23 nos. new hl to be entered ) 6 4th year o&m rate of 67 nos. new pc and 23 nos. new hl (monthly o&m cost of 67 nos. new pc and 23 nos. new hl to be entered ) 7 5th year o&m rate of 67 nos. new pc and 23 nos. new hl (monthly o&m cost of 67 nos. new pc and 23 nos. new hl to be entered ) 8 total 05 years overhauling and maintenance of shutter and water pump (total montly rate to be quoted)