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At line 523 added 11 lines
Consequently the HLC approach is under constant change and development in response to changes in thinking, political drivers and pressures, in parallel with improved GIS technology and data (see case studies below) in order to create a better application and also one for wider and specialised use.
*__Urban HLC__ Enhanced forms of HLC are being developed, for example Urban based HLC, using a more fine grained approach – assessing and classifying the urban environment in greater detail than rural HLC (see below). This approach is currently being developed in Lancashire, Cornwall, Northern England and in Hertfordshire (a pilot study in Stevenage). See illustration from Cornwall, figure 52. It is thought this more detailed approach will sit alongside Historic Buildings and Conservation Areas and the more recent Extended Urban Survey’s (EUS) providing an historic urban context for more detailed studies and site based data.
*__Coastal HLC__ currently being developed by EH to assess the coastal margins, from the High Water Mark (HWM), out as far as the statutory limit (12 nautical miles). This will assess not only any historic data but also archaeological potential based on geology and topography. This is in response to current and future threats to such archaeological and historical material within the littoral coastal zone, from, for example, coastal erosion, deep fishing and mineral extraction.
*__An enhanced HLC__, also incorporating fieldwork, looking in detail at field boundaries, their history and current condition in response to the proposed areas for minerals extraction, has been applied in Hertfordshire (Bryant and Hunn 2004).
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[{Image src='fig52.jpg' alt='Figure 52: Urban HLC as applied in St Austell Cornwall.'}]
''Figure 52: Urban HLC as applied in St Austell Cornwall (©Cornwall County Council 2007 and ©Crown Copyright. All rights reserved. 100019590. 2007).''
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