Assertion: pit's water | /r/HasProperty | channelled to sump
Facets:
value: for groundwater control
type: PURPOSE
Source sentences:
text: For surface water control: To collect and remove surface water run-off within the excavation, the water being channelled to sumps by means of collector ditches or channels.
text: For groundwater control: To collect and remove groundwater seeping into the excavation through the base and slide slopes, the water being channelled to sumps by means of collector ditches or channels.