Draft Overview of HPC Construction - EDF Hinkley Point

4. CONSTRUCTION AT HINKLEY POINT C4.1 Introduction4.1.1 This section provides a description of key site preparation and construction activitiesand land uses.a) Land Use4.1.2 This section describes at a high level the main land usage throughout theconstruction activity.4.1.3 The temporary construction areas extend to the west and south of the permanentpower station site. The overall construction site area is bisected by a track (GreenLane) running east-west, which has archaeological and ecological significance. Thistrack will be retained and protected for most of its length and two crossing points areprovided for construction traffic. The southern limit for main construction activity hasbeen set as OS grid line 144750mN, to provide a buffer zone between the mainconstruction activity and the village of Shurton. However, limited works (landscapingand the construction of an emergency access road) will take place within this bufferzone.4.1.4 A number of badger setts are relocated to the west of the construction site. Thesebadger setts, together with a bat house, earth bunds and water management zone(s)will be integrated into a landscaped western boundary, which serves to reduce thevisibility of the works from the west.4.1.5 A temporary jetty will be located in the north-west of the site to facilitate the import ofbulk materials, primarily aggregate, sand and cement for concrete production andother construction materials.4.1.6 An on-site accommodation campus will be located in the south-east corner of theHinkley Point C Development Site.4.1.7 Access to the construction site for material deliveries will be via a roundabout into thesouthern part of the site. This southern access incorporates a waiting area andsearch lanes for delivery vehicles. Workers will mostly be bussed to site and arrivevia the northern roundabout and a coach drop-off and parking area on the site of thesouthern permanent station car park. Workers will enter the site via turnstiles and asearch hall for security control.4.1.8 During the site preparation works, the construction areas will be levelled into a seriesof platforms and excavation of the main site will start. The excavation and groundterracing will involve approximately four million m 3 of material. To avoid additionalroad journeys, all the material will be retained on site. This will necessitate theculverting of Holford Stream to provide space for stockpiles and working platforms.In the south-west corner of the site will be storage areas for topsoil, re-usableexcavated rock, weathered rock and overburden. The re-usable rock will be used forengineering fill, and the other material will be stored for use in the final sitelandscaping. Part of the weathered rock and overburden stockpile will be prepared asa platform for contractors’ workshops and storage areas.DRAFT | Overview of HPC Construction | February 2011 15