Ar 3 Ionawr, collwyd olew o linell danwydd ar jeti Valero, Sir Benfro.  Cafodd oddeutu 7 i 10 metr ciwbig o danwydd trwm ei ryddhau i ochr Dde dyfrffordd y Ddau Gleddau i'r Gorllewin o Valero T Head, gan olygu bod yr olew i'w weld yn y dŵr.
On 3 January, an oil leak from a fuel line occurred at the jetty at Valero, Pembrokeshire. An estimated 7 to 10 cubic meters of heavy fuel was released into the South side of the Milford Haven waterway West of Valero T Head, resulting in a visible slick in the waterway.