1. Yearly maintenance for cleaning & removing of water hyacinth bushes, jungles shrubs etc. from canal bed of 'G' canal from P.S Group Building to tail end in AA-ID under NKDA New Town Kolkata. 2.Yearly maintenance for cleaning & removing of water hyacinth bushes, jungles shrubs etc. from canal bed of 'F' canal from Bolaka Abasan to P.S Group Building in AA-ID under NKDA New Town Kolkata.