Confirmation that the operator has ceased to take taxable disposals, including any site restoration material (LDTA/4000) and the date on which the last taxable disposal took place.
Cadarnhad bod y gweithredwr wedi rhoi’r gorau i gymryd gwarediadau trethadwy, gan gynnwys unrhyw ddeunydd adfer safle (DTGT/4000) a'r dyddiad y digwyddodd y gwarediad trethadwy olaf.