Using a 31-year-old law to fight a proposed liquefied natural gas plant at the Sparrows Point shipyard might not be enough to thwart the project, officials said Wednesday.

State lawmakers are dusting off the 1975 Coastal Facilities Act, which serves as an umbrella process for the wetlands, air and water quality permits Virginia-based AES Corp. will need to move forward with a $400 million gas terminal and 85-mile pipeline, said Elder Ghigiarelli, deputy director of the state?s Wetlands and Waterways program.