OandM Water Supply Schemes Mace of RWSS to Vechuchira Supplying and stacking new filter sand media and Removing sedimented silt and slush from the filter media clarier, aerator OH tank and sump at Navodaya WTP

OD311245/2025-2026:Removing filter media for washing and removing sedimented silt and slush by engaging labours excavating the sediments, lifting the excavated silt/mud/clay using ropes, pulleys and buckets and disposing the same within minimum lead of 50 m from the periphery , including engaging coolies for cleaning the filter media, without causing any damages to the existing structures and installations, including hire and conveyance of tools and plant and as per the directions of the department officers etc. complete.

100.7.1:Bailing out water with 5HP engine and pump set including conveyance to the site, erecting, dismantling and taking back of engine and pump, cost of fuel lubricating oil and other stores pay of staff etc., complete.

OD311246/2025-2026:Engaging man mazdoor for washing and cleaning Clarifier, aerator, filter beds etc using brooms, brushes and bleaching powder and cleaning the scour pipe and scour valve and wash out the slush and silt through scour pipe by engaging coolies, using fresh water, including side wall, floor slab and columns, disposing the the slurry / waste materials away from the immediate premises and within the initial lead of 50m from the periphery, without causing any damage to the existing structure and installations, charges including the operation of valves, conveyance and hire charges of tools and as per the direction of the department officers etc. complete.

OD311247/2025-2026:Engaging man mazdoor for washing and cleaning the Sump and OHSR using brooms, brushes and bleaching powder and cleaning the scour pipe and scour valve and wash out the slush and silt through scour pipe by engaging coolies, using fresh water, including side wall and floor slab, disposing the the slurry / waste materials away from the immediate premises and within the initial lead of 50m from the periphery of the sump, without causing any damage to the existing structure and installations, charges including the operation of valves, conveyance and hire charges of tools and as per the direction of the department officers etc. complete.

OD59865/2026-2027:Engaging labour for washing and cleaning the perforated pipes as per the directions of the department officers etc. complete.

100.55.4:Supplying and stacking for measurement of filter sand having effective size 0.45 to 0.70 mm and uniformity coefficient 1.30 to 1.7, of specific gravity in the range of 2.55 - 2.65 and hard and clean, free from clay, dust and other impurities including cost of materials, labour charges and conveyance of materials up to 5 km and as per the directions of the department officers etc. complete and as per CPHEEO specification.

OD59864/2026-2027:Refilling washed filter media layer by layer by engaging labours as per the directions of the department officers etc. complete.

2.32:Clearing grass and removal of the rubbish up to a distance of 50 m outside the periphery of the area cleared.