East Anglia ONE Offshore Windfarm Landscape Management PlanWork No 38 to 41


August, 2016


Table 6-12 Swale Maintenance (G1, G2) – activities and general frequency Maintenance Regular Maintenance Action


Litter and debris removal from site Amenity grass cutting at 35-50mm


Grass cut to swales, access and overflows 75-100mm not to exceed 150mm


Wetland or meadow vegetation cut at 50mm and remove to wildlife or compost piles


Inspect and clear inlets, outlets and overflows


Occasional tasks Remove leaf accumulation


Cut back overhanging branches to allow dense vegetation growth


Remedial work


Repair erosion, level uneven surfaces or damage by re-turfing or seeding


Remove silt and spread locally outside design profile and reinstate surface


Repair inlets, outlets or check dam structures to design detail


Frequency Monthly


As required Monthly or as required Monthly or as required Monthly


As required As required


As required As required As required


Table 6-13 Detention Basin Maintenance (G1, G2, G7) – activities and general frequency Maintenance


Action Regular maintenance


Litter and debris removal from site


Amenity grass cutting at 35-50mm


Grass cutting to access routes, overflows and basin where required at 75-100mm not to exceed 150mm


Meadow grass, where appropriate, cut at 50mm and remove to wildlife or compost piles


Manage wetland planting in micropools by cutting and remove to wildlife or compost piles


Inspect and clear inlets, outlets, control structures and overflows


Occasional tasks Remove leaf accumulation


Cut back overhanging branches to allow dense vegetation growth


Remove sediments from forebay, inlets and pre-treatment structures


Remedial work


Inspect and repair damage to inlets, outlets, banks and overflows


Frequency Monthly


As required As required


Annually


As required


Monthly


As required As required


As required As required


East Anglia ONE – EA1-CON-F-GBE-008554


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