3, 5, 6 Butter Hill, Carshalton, SM5 TQ 2831 6501 PCA Ltd (Iain
Bright) evaluation Sept 2009 Mills Whipp Partnership on behalf of
The Oakwood Group BUM09
Natural brickearth was sealed by a series of 17th/19th c alluvial
layers, possibly the result of flooding by the nearby River Wandle.
On the E side of the site a NW-SE aligned palaeochannel, likely
originating from the River Wandle, cut natural brickearth and was
sealed by a 19th c alluvial layer. Dating evidence from the channel
fills suggested that it silted up between the 16th and 19th c. A
series of 18th/19th c brickearth extraction pits were recorded cutting
the channel’s lower fill; 19th /20th c made ground sealed
the site.
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