Officers and employees of the Department of Health shall examine the area to which shellfish from condemned areas are relayed and ensure that adequate and proper corner stakes or buoys have been put in place by the lessee before a permit is issued to transport to or plant the area. When shellfish from condemned grounds are relayed onto approved grounds, a twenty-five-foot open area shall be maintained between each bed. Each corner stake or buoy shall be marked by a yellow flag or bunting of not less than fifteen inches by fifteen inches, and the marking shall remain until a special permit to remove the shellfish for sale or shipment has been obtained from the State Health Commissioner.