Conservation, Restoration and Rejuvenation works of the Mer Beel of Dibrugarh District under Assam SWIFT Project

DE-WEEDING: Clearance of different types and nature of Water Hyacinth, Aquatic weeds, Taranies, Dalanies, Pitanies, repeated vegetation etc. from Beels/ Tanks/ Ponds/ swampy and marshy areas dragging manually /mechanically/ through machinery etc. with necessary ropes, bamboos, chains and other debries devices etc. making patches, cutting into pieces with the help of knifes/ sickles/ sews as necessary and depositing and stocking in the marginal areas of the beels/ tanks/ ponds/ swampy and marshy areas in a regular form of bundhs or heaps within a lead of 100 m and lift up to 2.50 m as per direction of the deptt. etc complete (pushing out the patches or pieces of vegetations may also be made through the connecting channels with the river and burning the lifted vegetation after sunshine as and when applicable). iv) Medium and floating Taranies,Dalanies, Pitanies and other marginal aquatic weeds etc. upto a depth of 50 cm to 80 cm

DE-WEEDING: Clearance of different types and nature of Water Hyacinth, Aquatic weeds, Taranies, Dalanies, Pitanies, repeated vegetation etc. from Beels/ Tanks/ Ponds/ swampy and marshy areas dragging manually /mechanically/ through machinery etc. with necessary ropes, bamboos, chains and other debries devices etc. making patches, cutting into pieces with the help of knifes/ sickles/ sews as necessary and depositing and stocking in the marginal areas of the beels/ tanks/ ponds/ swampy and marshy areas in a regular form of bundhs or heaps within a lead of 100 m and lift up to 2.50 m as per direction of the deptt. etc complete (pushing out the patches or pieces of vegetations may also be made through the connecting channels with the river and burning the lifted vegetation after sunshine as and when applicable). v) Heavy and floating Taranies,Dalanies, Pitanies and other marginal aquatic weeds etc. upto a depth of 80 cm to 120 cm

DE-SILTING & EXCAVATION: Removal of unsuitable soil including excavation, loading and disposal upto 1000 m lead from the beds of Beels/Tanks/ Ponds/ Swampy lands to the proper grade and slopes as required and utilizing the soil in construction of embankment or repairing of existing embankment on all sides, lifting in uniform layers not exceeding 20 cm thick (excluding compaction), clearing light jungles and trees up to 50 cm girth from the site of work, dug belling, profiling, ploughing or roughening or benching the seat, breaking clods up to 25 mm cube ramming, removing roots and vegetation, dressing to the designed section complete as directed. All kind of soil. Construction of Peripheral Bund with de-silted soil Construction of Rearing Tank bund with de-silted soil

TURFING: Furnishing and laying of live sods of perennial turf-forming grass on embankment slopes, verges, or other locations as shown on the drawings or as directed by the Engineer, including preparation of ground, stacking the sods, and watering, as per Clause 309.

PEN CULTURE Construction of Pen Culture with Bamboo (1st Class) 85 mm - 100 mm dia, 4.5 m - 5.5 m long, vertically placed at 2.00 m centre to centre driven 1.50 m below ground/bed level and 2.50 m above ground/bed level tied with Jati or Bethua bamboo 50mm to 100 mm dia and 6m long above groung level horizontally in two rows at 2.00 m apart, Fencing with split bamboo kamis in horizontal direction at 300 mm c/c and vertical direction at 800 mm c/c having tied with coconut fiber two poly twisted rope etc. manually with provision of hired country boat (2 nos.), fitting and fixing of PEN culture Net 115 GSM HDPE mono shade, 45 ply Nylon, 210D, 24 mm mesh size net with boarder rope of 10 mm dia Polypropylene and tie rope in every 2 meter intervals conforming to technical requirement of Textiles - Twisted Nylon Fish-Net Twines as per IS 4401-2006, complete as per drawings and technical specifications as directed by Engineer in-charge. RearingPen(256.00Rm) Stocking Pen (720.00 Rm)

BAMBOO BARRICADE /SCREENING: Construction of Bamboo Screening Structure by placing and arranging of whole Bamboo in barricade type with Bamboo Bholuka or Barua 55mm to 100mm dia and 6m minimum in length, vertically placed two rows in staggered manner at 2.50 m centre to centre, driven 2.00 m below ground/bed level and 4.00 m above ground/bed level tied with Jati or Bethua bamboo 50mm to 100 mm dia and 6m long above groung level horizontally in two rows at convenient level having tied with coconut fiber two poly twisted rope etc. manually with provision of hired country boat (2 nos.), fitting and fixing of 72 ply HDPE 30mm kk mesh size net with boarder rope of 32mm dia TUF PP IR 3 strand 220 mtr : 101 kg and tie rope in every 2 meter intervals conforming to technical requirement of Textiles - Twisted Nylon Fish-Net Twines as per IS 4401-2006, complete as per drawings and technical specifications as directed by Engineer in-charge.

COMPACTING ORIGINAL GROUND: Compacting original ground supporting subgrade Loosening of the ground up to a level of 300 mm below the subgrade level, watered, graded, and compacted in layers to meet requirements of Tables 300.1 and 300.2 for subgrade construction as per Technical Specification Clause 303.5.2. Walkway

GSB: By Mix in Place Method Construction of granular sub-base by providing well-graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix-in-place method with rotavator at OMC, and compacting with smooth wheel roller to achieve the desired density, complete as per Technical Specification Clause 401. For Grading II Material Walkway

WBM: WBM Grading 3 Providing, laying, spreading, and compacting stone aggregates of specific sizes to water-bound macadam specifications, including spreading in a uniform thickness, handpacking, rolling with smooth wheel roller 80- 100kN in stages to proper grade and camber, applying and brooming, stone screening to fill up the interstices of coarse aggregate, watering and compacting to the required density Grading 3 as per Technical Specification Clause 405. Using stone screening Type-B 11.2 mm for Gr.III By Manual Means Walkway

COLOURED CONCRETE PAVER BLOCK: Providing and laying factory-made chamfered edge cement concrete paver blocks in footpaths, parks, lawns, driveways, or light traffic areas, of required thickness, strength, size/shape, in required colour & pattern over a compacted sand bed, embedding/laying through vibratory compaction, filling joints with sand, cutting blocks as needed, etc. – complete 60 mm thick Cement Concrete Paver Blocks (M-30/M-35 grade) – colour, design & pattern specified. Walkway