Contract Agreement was signed between Environmental Services Nepal (ESN) and District Development Committee, Banke in February 16, 2012 to conduct the Environmental Assessment for collection and extraction of sand, gravel and boulders from Mankhola, Rapti, Dunduwa, Jhijhari, Khairi and Muguwa rivers of Banke district. The agreement was signed by Mr. Niranjan Shrestha, CEO of ESN and Mr. Bishwo Raj Dotel, Local Development Officer (LDO) of Banke District Development Committee.