o Construction of an onshore converter station, associated infrastructure and landscaping;


o Creation of temporary construction compounds and laydown areas;


o Temporary upgrade of existing access tracks, construction of new access tracks and haul roads;


o Stockpiling of topsoil and subsoil; o Re-use of excavated soil in jointing pits; o Disposal of excess spoil offsite to a suitably licenced facility; and o Removal and reinstatement of existing drainage systems.


 Scenario 2 – installing trenches for East Anglia THREE and ducts for East Anglia FOUR


o Installation of onshore cable including landfall joint transition bay and cable jointing locations including the digging of trenches to depth of 1.5m and installing ducts for East Anglia FOUR, and undertaking HDD activities at 8 locations including the River Deben, Kirton Creek, Martlesham Creek and River Gipping;


o Open cut techniques used to cross other water crossings;


o Construction of an onshore converter station, associated infrastructure and landscaping;


o Creation of temporary construction compounds and HDD compounds;


o Temporary upgrade of existing access tracks, construction of new access tracks and haul roads;


o Stockpiling of topsoil and subsoil; o Re-use of excavated soil in trenches; o Disposal of excess spoil offsite to a suitably licenced facility; and o Removal and reinstatement of existing drainage systems.


Preliminary Environmental Information May 2014


East Anglia THREE Offshore Windfarm


Chapter 21 Water Resource and Flood Risk Page 32


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