East Anglia ONE Offshore Windfarm Landscape Management PlanWork No 38 to 41
August, 2016
4.8 Top Soil Storage Strategy 55.
Top soil will be stored as per the Construction Code of Practice for the Sustainable Use of Soils on Construction Sites, published by DEFRA; the key points of which are listed as follows:
Maximum storage heights of mounds: 2m for topsoil 3m subsoil. Topsoil will be stripped in the driest condition possible. Topsoil and subsoils will be stored separately. Materials will be stored like upon like i.e. topsoil will be stripped from beneath subsoil bunds,and subsoil from beneath overburden bunds.Where continuous bunds area used, dissimilar soils will be separated by a third material such as geotextile layer.
All soil bunds will be placed 2.5m from any hedgerows and advance planting areas to protect rootzones and to allow for maintenance access. Tracked equipment will be used wherever possible to reduce compaction.
Movement of trucks or dumpers will be confined to designated temporary haul routes. Vegetation will not be incorporated into topsoil to be stored. Soils will not be stripped during or after heavy rainfall or when there are pools if water on the surface. Topsoil will not be stripped too deeply so that subsoil becomes incorporated, thereby reducing fertility. Topsoil will not be removed from below the spread of trees and hedgerows to be retained. Duration of subsoil storage will generally be short term (1-2 weeks) for open cable trenches before backfilling. Duration of the topsoil storage will generally be approximately 12-18 months for cable trenches and 24 months for construction compounds and haul road.
A low maintenance, legume rich grasses as per grass mix G4 will be sown as soon as possible after creation of any soil storage mounds which are intended to remain in situ for more than 6 months or over the winter period. The optimum months for sowing grass seed are April or September to October.
East Anglia ONE – EA1-CON-F-GBE-008554
Page 19
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112
