By: Xander Landen for VTDigger, Nov. 20, 2018

Opponents of a 41-mile Vermont Gas pipeline between Middlebury and Colchester are asking state regulators to expand their investigation into the line’s construction.

In a motion filed with the Public Utility Commission Tuesday, James Dumont, an attorney representing residents in Monkton and Hinesburg, said he wants the commission to determine whether an independent licensed engineer signed off on the company’s plans to build the natural gas pipeline.

Vermont Gas Systems, however, says it has followed all regulations and the pipeline is safe.

Regulators already are investigating the pipeline. Three months after the pipeline’s completion in April, the state began looking into claims that the pipeline had not been buried deep enough.

Vermont’s Agency of Natural Resources and Department of Public Service submitted filings in March seeking to expand the investigation into pipeline construction methods.

On Tuesday, Dumont asked the PUC to broaden the scope of the investigation even further, asking the regulatory body to determine whether a licensee had signed off on the Addison Natural Gas Project before construction moved forward.