Digging of Water Absorption Trenche (WAT) without trimming, involving earth work excavation of peripheral trench/water absorption trenchs without trimming, involving earth work excavation by the excavator with shoewl 0.50 cum. capacity in all kinds of soil including boulders upto 0.30 m diameter leaving the berm of 1.00 m. from the edge of the trench (3.00 m x 2.00 m x 3.00 m) size or 7.50 cum. per running meter or7500 cum per kilometer in Narasipatnam Rnge during 2017-18