a)pnvl-roha: lowering of rock bed monsoon river along rub at lc-4 in pen-kasu (irpsm id : 01.02.30.25.3.51.006). b)pnvl-roha: laying of 900 mm diameter pipe from rub sump (lc-3) at km 78/6-7 to nearby waterway bridge 78/3. (irpsm id: 01.02.30.25.3.51.005)
