Flood mitigation by capacity augmentation of Dorikamari Wetland for Flood Regulation of River Bhogdoi, Package 1.

Clearing of deposited compact water hyacinth root and other aquatic plants from the bed of drains/channels including cutting, removing and stacking at places away from the bank etc. Complete with all lead and lift etc. complete as directed.

Earth work in excavation of drainage channel by mechanical means to the proper grade and slopes as required including disposing the excavated debris/soil to a safe distance of minimum 50 m distance, etc. complete as directed. For lead up to 50 m and all lifts Normal Soil

Earth work in excavation of drainage channel by mechanical means to the proper grade and slopes as required including disposing the excavated debris/soil to a safe distance of minimum 50 m distance, etc. complete as directed. For lead up to 50 m and all lifts. Wet & Sticky Soil

Compaction of locally available ordinary/normal soil excluding sandy and rocky soil free from roots & vegetation and filling in uniform layers not exceeding 30 cm thick including ploughing or roughening or benching the seats, removing all debries, dressing as per design section and compaction with three wheel static roller of 80-100 KN capacity in layers not exceeding 30 cm in thickness and core cutter soil test at every 500m distance, etc. complete as directed.

Supply of geo textile tube (Mega Container) with the minimum properties as mentioned below: - o Polymer: PP of 400 GSM or above o Tube Circumference: 10m + 5% o Fill Port (diameter): 30 to 45 cm o Tensile Strength (MD): ≥ 100 kN/m o Tensile Strength (CD): ≥ 100 kN/m o Elongation - MD: ≤ 25% * AOS: ≤ 0.180 nim o Permittivity: ≥ 0.40 S-1 o Length: 25 m

Filling of geo-tubes (25m long and 10m circumference) with sand/silt of volume 176 cum by using mud pump not below the fill height of 1.60m as per drawing and technical specifications, binding the tube with 9mm nylon rope to jati bamboo pegs of length 2m placed 5m c/c along both sides of the tube to keep the tube in position during filling, as specified and directed including all loading, unloading and handling charges and local carriage upto a distance of 250M, pumping slurry using mud pump from a distance upto 500m, etc. including setting up of the tube laying platform complete as directed.