removal of jungle and silt (in selected reaches) and improvements to sr and ip from 0.00 to 2.00 km of lat-12 of dy-6 of sbc, removal of jungle and silt (in selected reaches) and improvements to sr and ip from 2.00 to 4.00 km of lat-12 of dy-6 of sbc, removal of jungle and silt (in selected reaches) and improvements to sr and ip from 4.00 to 6.00 km of lat-12 of dy-6 of sbc..