Additional Dredging works along a 5.00 KM downstream stretch of the Kolong River towards Misa by manual cleaning and Departmental cutter suction dredger along with hired chain-mounted excavators.

Clearing of deposited compact water hyacinth root, waterweeds, other aquatic plants, garbage, plastics etc. from the bed of Kolong river channel including cutting, removing and stacking at places away from the bank etc of the channel complete with all lead and lift as directed to facilitate Dredging work with the help of Cutter Suction Dredger .

Hire charges for chain-mounted hydraulic excavator (Model 71/80) with 0.60 cum bucket capacity mounted on an iron barge for cleaning and excavation of aggregate muddy soil etc., from a portion of the Kolong River to achieve the required grade and slope for obtaining the necessary draft for dredging operations including cost of operator, maintenance, fuel/POL etc. on a daily basis considering a minimum effective operation of 7 hours per day.

Hire charges for deployment of chain-mounted hydraulic excavators (Model 210/220) each with 0.90 cum bucket capacity for excavation of deposited muddy soil from the riverbed to achieve the required draft for enabling the movement of the Cutter Suction Dredger towards the downstream stretch of the Kolong River including cost of operators, maintenance, fuel / POL etc. on a daily basis considering minimum of 8 effective working hours per day.

Grease – MU EP 2 NLGI-2 / Gr. 4526014- 40 kg (20 kg pack)

Engine Oil------ CAT DEOTM 15W-40 / Gr. 3E-9848 - 40 Ltr (20 Ltr drum)

Heavy Duty Hydraulic fluid – ZDAW 68 / Gr 4226712 - 200 Ltr Drum

Fuel Filter 1R0755

Diesel Oil Filter 1R1808

Glass fibre Panel filter

Ordinary labours engaged to facilitate the intermittent cleaning of the Kolong River for removal of floating aquatic weeds etc.

Dredger operator for Operation & maintenance of the cutter suction dredger with Technical Crew having valid license, expertise of corrective & maintenance dredging work for proper dredger operation. (2 nos./month x 1.5 months = 3 nos.)

Pipeline crew for Operation & maintenance of the cutter suction dredger with Technical Crew having valid license, expertise of corrective & maintenance dredging work for proper dredger operation. (7 nos./month x 1.5 months = 10.5 nos.)

Engagement of ordinary labours for various assisting & helping requirements during Dredging operation to facilitate smooth operation of the Cutter Suction Dredger unit, watch keeping duty etc. (2 nos. x 45 Days = 90 Mandays)

Charges for construction of temporary site camp of size 16 ft x 12 ft x 10 ft covering on all four sides with one door opening using corrugated galvanized iron sheet roofing of 0.45 mm including supply of coir sutli, galvanized wire, bamboo etc. with total coated thickness with minimum tensile strength of 450 mpa with 120 gsm Zinc coating on both sides complete as directed for accommodation of ordinary labours, storage of dredger spare materials, lubricants, HS diesel etc.

Hire charge of Tractor with minimum 40 HP engine capacity along with trailer of 2.50 cum capacity including operator and excluding fuel and lubricant for carriage of fuel etc.