The U.S. Army on Wednesday ordered a full environmental review of a proposed Formosa Group (1301.TW) petrochemical plant in St. James Parish, Louisiana, opposed by local groups concerned about the health impact on an area overburdened with pollution.

The review of the “Sunshine Project” in St. James parish in Louisiana, which could take years, will be conducted by the U.S. Army Corps of Engineers, according to a memo posted on the Twitter feed of an Army Civil Works official.