Two double-skinned barges, loaded with approximately two million gallons of crude oil, grounded near the Galveston Causeway Bridge Sunday and were freed Tuesday. After many unsuccessful attempts to unground the barges with assist tugs Monday, the Coast Guard approved a plan to offload some crude oil to stand-by barges to lessen the weight and increase buoyancy, which freed them. Marine Safety Unit Texas City personnel were on scene throughout the offloading and reloading of the crude oil in order to ensure the evolution was successful and to investigate the cause of the grounding.