The spill occured in the early hours of the morning,
when there was an accidental release of unleaded petrol
from the Tasman which was loading at Holden Dock, Yarraville.
In a statemenent, Mobil said the spill occured
when the vessel was discharging water ballast,
a normal practrice when loading.
"The ballast storage are was apparently breached
and unleaded petrol became mixed
in with the vessel's ballast water
and was thus discharged."
We estimate that 4000 litres of product was spilled".