Vermont is asking federal nuclear regulators to require the owner of the Vermont Yankee nuclear power plant to address concerns about Entergy's plans for cleaning up the site.
The Vermont attorney general, Department of Public Service, Agency of Natural Resources and Department of Health filed comments with the Nuclear Regulatory Commission Friday.
They are concerned that Entergy has not done enough work to determine what contamination exists and may not have enough money to cover the decommissioning.
Vermont Yankee's fund has about half the amount expected to be needed.
The NRC allows retired plants to take up to 60 years to complete decommissioning.
Entergy Vice President Mike Twomey said last week that the company expects investment growth in the fund will be sufficient in that amount of time.