Kingsnorth site remediation and enabling works

The Works comprises three Work Elements (WE1, WE2, WE3), as described below.

Work Element 1 (WE1): Land clearance, soil remediation and bulk excavation and backfilling of a 4.4 ha site to provide a Working Platform. Land clearance shall include removal of vegetation, surface soil bunds and any above or below-ground concrete, brick, obstructions, waste or other structures. The remediation works shall include excavation of known areas of soil contaminated by Heavy Fuel Oil (HFO), removal of the soil by road transport and treatment/ disposal at an appropriately licensed waste management facility, together with verification and validation of remedial excavations and remaining site area. The remaining area (uncontaminated soils) shall be subject to bulk excavation, including the break out and removal of surfacing, below ground obstructions and six large concrete tank bases with cropping of underlying piles. The void space resulting from soil remediation and bulk excavation shall be backfilled to a specified formation level with uncontaminated geotechnically suitable imported material to the required engineering specification to achieve a Working Platform Certificate.

Work Element 2 (WE2): Preparation of a 1.6 ha site for a temporary construction laydown area. The works shall comprise land clearance by removal of surface soil bunds, vegetation and any above-ground concrete or other structures to create a level surface, including disposal or waste arisings at an appropriately licensed waste management facility, followed by installation of a geomembrane and placement of a gravel layer above the geomembrane to provide a stable, level ground surface. If found, the works shall include excavation and removal of any unexpected contamination that may be encountered.

Work Element 3 (WE3): Preparation of a 1,250 m two-way carriageway length of an access road (on private land). The works shall comprise preparation of an existing access road for use by construction traffic associated with the Works and for future use by construction traffic during redevelopment of the Site, including road widening, bend alignments, surfacing, shoulders, cambers, surface water drainage relocation and connections to existing stormwater system. If found, the works shall include excavation and removal of any unexpected contamination encountered during the works.

The Works shall be carried out in accordance with the technical specifications and other requirements, provisions and conditions specified by the Employer in the ITT Documentation.