1.9 116
Palaeoenvironmental assessment
The palaeoenvironmental assessment would adopt a staged approach to assessment. In summary, a desk-based review of existing geotechnical data would be supplemented with intrusive field survey (undertaken in conjunction with other intrusive surveys, where possible), where necessary, and any potential impacts within areas of identified archaeological potential would be mitigated either through preservation in situ or preservation by record (archaeological excavation).
117
It is anticipated that the palaeoenvironmental assessment programme will focus on flood plains and reclaimed land crossed and potentially impacted within the Onshore Cable Route.
118 1.9.2 119
The environmental policy to be implemented throughout the intrusive archaeological assessment stages is addressed in Part 1.11.4.
Aims and objectives
Aims of the palaeoenvironmental assessment are two-fold: •
Where possible, to collect a number of preserved deposits sufficient and suitable for the study of past environments. These most commonly occur in the form of subsurface peat layers, but include waterlogged deposits and palaeochannels
•
To record a detailed stratigraphy across the floodplains in order to identify sensitive locations for potential physical impact along the Onshore Cable Route. These may include, but are not limited to, buried land surfaces capable of sustaining former settlement, and locations in which anaerobic conditions are suitable for the preservation of organic archaeological structural remains (trackways, fishtraps etc.)
1.9.3 120 121 Conditions
A desk-based review of all previous intrusive geotechnical ground investigations within river valleys and reclaimed land would be carried out.
Intrusive archaeological field investigation would be implemented, in conjunction with other intrusive or geotechnical surveys in the area, wherever possible, where geotechnical investigations have not previously mapped below-ground deposits, alluvial sequences, and buried land surfaces. This would be done to the extent necessary to make a judgment of the extent of these deposits, sequences and surfaces across the Onshore Cable Route.
Outline Written Scheme of Investigation: Archaeology and Cultural Heritage (Onshore) Rev 01 Page 30
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