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Client:
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Caerphilly County Borough
WWWWWWI
Council
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Value:
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£8.7 Million
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Duration:
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1994 - 1997
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Walters UK Ltd
Works involved the movement of more than 2 million m
3
of colliery spoil.
The river was diverted along a 2km length to allow the land form to be reshaped to allow for a future bypass to the town of Bargoed.
In conjunction with the river diversion it was necessary to divert nearly
2.5km of trunk sewer in or adjacent to the river.
Much of the work was carried out on steep slopes.
Much of the existing river walls were demolished and replaced by a stone
faced earth retaining wall along the new line of the river.
A 120m long arched culvert was installed to accomodate the new river line.
Ponds were cast on site and lifted into place.
The total area for the two sites was 70Ha.
Extensive drainage including stone lined channels and cascades and underground pipe work.
Areas of contamination and burning material dealt with.
On the Brittannia Colliery site two mineshafts are capped.
At the Brittannia site a significant amount of existing hard material was
sorted, crushed and reused for footpaths and roads.
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