HGVs will not be queuing to enter the site but held in lanes on site where they are security and safety checked before moving forward for inspection.
Ni fydd cerbydau nwyddau trwm yn ciwio i fynd i mewn i'r safle ond eu cadw mewn lonydd ar y safle lle cânt eu gwirio er diogelwch cyn symud ymlaen i'w harchwilio.