EdF won a tender from Dunkirk Port Authority last year to carry out feasibility studies, exclusively over a three-year term, for building an LNG import facility.
The French power company said that if the project proceeded it could be completed by 2011.
The facility would have capacity for 6 billion cubic metres per year of capacity in the first phase or about 80 LNG carrier deliveries per annum - and 12 billion cubic metres in the second phase.
Mouchel Parkman, which has experience of working for major clients on energy terminal projects in Qatar, Oman, Mexico, the UK and India, said its ports team would be working on the contract.
We will be advising and representing EdF during its negotiations with its partner, the Port of Dunkirk, on how to scope and implement a complex series of inter-related marine studies, said Sean Barker, head of Mouchel Parkman's ports team.
The company said it would draw up a Dunkirk LNG project road map, which will embrace the list of aspects to be investigated, the logic of the inter-relationship between the different studies and the scoping of the different elements.
Additionally Professor Keith Davies, who lectures at the University of Plymouth, will be advising on critical port design and operational aspects, a statement said.
Advice on navigation and mooring will be provided by sub-consultants Eagle Lyon and Pope, Mouchel Parkman added.