Working method. A perimeter dyke shall be constructed around the perimeter of the clay disposal site utilizing the dredged materials or materials locally available in the vicinity. The Contractor shall divide the areas to be filled into compartments of adequate dimensions by the construction of temporary containment bunds of suitable material. These perimeter ▇▇▇▇▇ shall be constructed before reclamation work in that area commences. The Contractor shall establish, to the satisfaction of the Engineer that the proposed perimeter ▇▇▇▇▇ are sufficiently stable, durable, and erosion resistant and water tight for a period of not less than 1 year after completion of maintenance period of dredging. Geotextile filter material of approved type & grade shall be employed as filter material in making such perimeter ▇▇▇▇▇ to sufficiently cover those sides of the dyke that are likely to be affected by erosion / slippage and flow of dredged materials to the river or other land underutilization, during dredging or rains. Dredged material placed by hydraulic means shall be placed in layer thickness appropriate to achieving the maximum amount of de-watering of the fill before subsequent layers are placed on top. Fill heights should not exceed 1.0 m in any one lift. Excess water above the clay layer should be removed in order to promote natural de-watering.
Appears in 3 contracts
Sources: Tender Agreement, Tender Agreement, Tender for Dredging and Maintenance Services