1.Emergent repairing potholes with precoating bituminous materials and surface area of different street of Block B of AA-I under NKDA 2. Emergent repairing potholes with precoating bituminous materials and surface area of different street of Block D of AA-I under NKDA 3.Repairing of trench/pit excavated on bituminous road surface for micro tunnelling works or other purposes for laying of Gas Pipe line in AA-I under NKDA, New Town, Kolkata.