Provision of Watercourse Maintenance Services to Doncaster East Internal Drainage Board

Doncaster East Internal Drainage Board is inviting tenders for the provision of watercourse maintenance services. Services are separated into the following lots based on geographic area and type of services required:

North Soak Drain Area

Lot 1 – Flail mowing of bank
Lot 2 – Removal of aquatic vegetation from the bed inclusive of culvert clearance

Hatfield Waste and North Engine Drain Area

Lot 3 – Flail mowing of bank
Lot 4 – Removal of aquatic vegetation from the bed inclusive of culvert clearance

River Torne Area

Lot 5 – Flail mowing of bank
Lot 6 – Removal of aquatic vegetation from the bed inclusive of culvert clearance

The Services lie within the boundaries of the Internal Drainage Board and comprise the ordinary watercourses in the current year’s maintenance scheme by the Board. Routine works consist of;
• Flail Mowing - mowing consists of cutting and removal from the watercourse banks grass, weeds and other vegetative growth within watercourses (as defined within the specification)
• De-weeding - of grass, weeds and other growths from the bed of the drain.
• De-silting - of gravel, silt and weed growth from the bed of the drain as a result of an accumulation of gravel or silt
• Reporting and record works via iPads and GisMap. Bank stability, structure problems and internal culvert/ bridge blockages should be reported to the Engineer promptly.
• Piling - Installation of timber toe piling and boarding. Piles 150mm diameter at 1.0m centres. Toe boards, cut from piles, nailed 300mm above bed level. Length of pile up to 3.0m as per the Bill.
• Brashing - Removal of tree/bush/hedge overgrowth growing within the profile and section of the watercourse affecting the flow or access to other maintenance operations.
• Hand labour - to implement any parts of above items 1-5 due to lack of machine access.

The deadline for the submission of electronic tenders via YORtender is 12noon 30 January 2017. All invitation to tender documents can be obtained from http://www.yortender.co.uk.

Please note that North Lincolnshire Council is the commissioned procurement agent and is running this procurement procedure on behalf of Doncaster East Internal Drainage Board. The contracting authority is Doncaster East Internal Drainage Board.