3rd March 2008, 11:06 AM
[quote]Originally posted by Steven
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In your case perhaps you should forget preservation in-situ because clearly hammering piles through remains (resulting in un-calculable damage) is not preservation. I would go the excavation route as any other solution seems to involve risk.
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One quick point - Excavation is not always the best option across a waterlogged site as it can result in a change in the water table (temporary or permanent) of the surrounding non-excavated area, including outside of the development site itself. This could result in the decay of previously waterlogged deposits which would not otherwise be threatened by the development, and have not been recorded during excavation.
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In your case perhaps you should forget preservation in-situ because clearly hammering piles through remains (resulting in un-calculable damage) is not preservation. I would go the excavation route as any other solution seems to involve risk.
----------------------------------------------------------
One quick point - Excavation is not always the best option across a waterlogged site as it can result in a change in the water table (temporary or permanent) of the surrounding non-excavated area, including outside of the development site itself. This could result in the decay of previously waterlogged deposits which would not otherwise be threatened by the development, and have not been recorded during excavation.