FERC imposes new vapor rules on Weaver's Cove LNG

FERC has informed Weaver’s Cove Energy that the company must comply with new vapor-gas exclusion zone requirements before moving forward with construction of the planned LNG terminal.

In a letter issued from FERC to Weaver’s Cove attorney Bruce F. Kiely, the director of FERC’s office of energy projects informed the company that it must receive written authorization from FERC before constructing any facilities associated with the project. That authorization, the letter states, “will only be granted following a determination that the facilities are in compliance with the interpretations issued by” the Pipeline and Hazardous Materials Safety Administration of the U.S. Department of Transportation.

The PHMSA issued two interpretations in July concerning the flammable vapor-gas exclusion zone requirements, saying that the interpretations apply to any LNG facility that is not yet in existence or under construction.

Two city residents raised objections with the U.S. Department of Transportation and FERC earlier this year in regards to Weaver’s Cove’s use of an outdated dispersion called SOURCE5 to show that vapor gas would not leave the company’s Fall River site.

Residents John Keppel and Michael Miozza argued the SOURCE5 model used by Weaver’s Cove resulted in a vapor dispersion model that showed vapors would remain within the company’s property. Keppel said at the time the SOURCE5 model creates “artificially small vapor zones.”

They argued that under different models the vapor dispersion would travel beyond the company’s boundaries, over private residences and possibly to Route 79.

In response to those concerns, the U.S. DOT informed the pair in July that the SOURCE5 model can not be used to comply with the agency’s vapor gas dispersion exclusion zone requirements. A similar determination was made in regards to the proposed Downeast LNG proposal for Robbinston, Maine.