 The demolition contract for the station was won by London @-@ based company Brown & Mason . Before the demolition of the stations ' main structures , it was required that they be decommissioned . This involved the removal of hazardous materials and contaminants , to keep in line with Health & Safety at Work regulations . Oils and chemicals were removed for re @-@ use or disposal and storage tanks were flushed out . Methanol was removed from hydrogen production plants on site , along with bottled propane used for welding . The remaining coal in the coal storage area was dispatched to operating power stations in other parts of the country . The landfill site where ash waste from the station was dumped was topsoiled . Asbestos used in the stations was removed prior to the demolition of the stations ' structures . 
