Mineral extraction sites are shown on Volume 6, Figure 20.1.3. The Envirocheck Report does not include details of any mineral extraction sites within the preferred onshore cable corridor. There is no indication of any quarrying or mineral extraction on the geological plans.
Data on mineral extraction sites provided by Suffolk Minerals and Waste are provided below:
• Proposed mineral extraction site close to Waldringfield Heath (there is an operational landfill site at this location currently), approximately 500m west of the preferred onshore cable corridor (grid reference 6261 2446)
• Two mineral extraction sites at Seckford Hall, close to where the route crosses the A12 (approximate grid references 6250 2484 and 6247 2479)
• Church Lane Quarry mineral extraction site (6126 2498) • Blood Hill mineral extraction site (6112 2485)
• Mineral extraction site on Loraine Way, Bramford (extensive site area), in the area of the existing sand and gravel pits which are just outside of the preferred onshore cable corridor (grid reference at centre 6123 2482).
3.2.5 Land stability
Geological information provided within the Envirocheck report indicates the following with regards to land stability hazards:
• There is a potential risk from collapsible and compressible ground stability hazards within the Converter Station Refined Area of Search, and for approximately 1km eastwards.
• A small length of the Preferred Onshore Cable Corridor close to Bramford
(approximately 1km north of the converter station) is potentially affected by ground dissolution hazards.
• Landslide and running sand ground stability hazards are identified on the Envirocheck mapping at the same location as the collapsible and compressible ground hazards indicated above, around the Converter Station Refined Area of Search and 1km to the east.
• There are no areas indicated to be at risk from hazards relating to shrinking or swelling clays along the Preferred Onshore Cable Corridor or around the Converter Station Refined Area of Search.
• There is an area indicated to be potentially at risk from radon, and this coincides with the area around the Converter Station Refined Area of Search and 1km eastwards.
3.2.6 Landfilling and potential land contamination 3.2.6.1 Pollution incidents to controlled waters
The following pollution incidents affecting controlled waters are held in the Envirocheck database:
East Anglia Offshore Wind Limited
Preliminary Risk Assessment, East Anglia ONE Windfarm 41388-PRA(03)
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