Summary of areas of possible contaminated land close to or within the proposed construction area Site location Grid ref


Site ref


Access


during site walkover


Observations from site visit


Crossed by corridor/ substation site


Areas of artificial ground on both banks of River Deben


6312 2398 and 6307 2396


5+6 Y


West Bank - Flood defence wall / levee East Bank - Flood defence wall / levee Contamination unlikely, as flood defence bunds would not have been constructed from contaminated materials. Site not of contamination concern.


Areas of artificial ground on both banks of Martlesham Creek


6263 2472 and 6263 2475


12+ 13


Yes (restricted)


Small flood defence levee on north bank, approx 2-3m in height. South bank - no levee/ defence noted, reeds and salt marsh lead up to field edge, which then rises upwards to south. Contamination unlikely, as flood defence bunds would not have been constructed from contaminated materials. Site not of contamination concern.


The Great Eastern railway line, north of Martlesham


6263 2476


14 Yes


Railway embankment and 30'' dia cast iron pipe (leading to sewage works). Potential contamination near surface from railway, but HDD should avoid this. SI will identify impact prior to construction work.


Sand pit / 6194 17 Outline Code of Construction Practice. Version 3. Yes Northern end of former pit / landfill is


HDD to pass beneath these areas.


Requirement for site


investigation prior to


construction


HDD to be present in this location, for which site investigation will be completed


HDD to pass beneath these areas


HDD to be present in this location, for which site investigation will be completed


If contamination is encountered by SI prior to HDD, action can be taken to address this based on advice of the environmental consultant.


If contamination is encountered by SI prior to HDD, action can be taken to address this based on advice of the environmental consultant.


Likely actions required if


contamination is present


HDD to pass beneath these areas


HDD to be present in this location, for which site investigation will be completed


Yes Borehole


If contamination is encountered by SI prior to HDD, action can be taken to address this based on advice of the environmental consultant.


Method statements Page 29


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