The scope of work includes earth preparation, subbase construction, and liner replacement for the designated pit area and access road, as per the provided layout. Key activities include:
· Grading, leveling, and compaction of the highlighted area and pit access road.
· Laying 15 cm of subbase Type A, compacted to achieve 95% Maximum Dry Density (MDD).
· Laying 2 cm of crushed gravel, compacted over the same areas for surface finishing.
· Cutting and removing the existing liner, including transportation to the DNO scrap yard.
· Supply and installation of a new 2mm liner, with all necessary inspections and tests to be witnessed and approved by DNO QA/QC before final handover.
· Construction of a 50cm high subbase berm along the west side of the pit, as shown in the layout.