Removal of Silt in D-9 from ch:0.00 to 0.50km, in D-10 from ch:0.00 to 0.50km, in D-11 from ch:0.00 to 0.50km, in D-12 from ch:0.00 to 0.50km, in D-13 from ch:0.00 to 0.50km, in D-14 from ch:0.00 to 0.30km and in D-15 from ch:0.00 to 0.60km