11. Disposal of silt

The licensee of a sand quarry shall ensure that —

each silting pond is provided with an overflow weir which shall be of permanent construction and set at half a metre below the top of the bund of such pond;

all the silt from any sand washing operation shall flow into the silting ponds referred to in regulation 3 and is not carried into any existing stream, canal or drain; and

when each silting pond is full, another silting pond shall be used and arrangements made for the removal of the silt from the full silting pond to a suitable place approved by the Licensing Officer.