Dolphins have returned to the Hudson Valley but leaders fear it won't last long.

According to Westchester County Executive Ken Jenkins, a federal judge’s decision is allowing a nuclear power plant to be dismantled.

Jenkins adds that the ruling disregards New York State law mandating Holtec to use decommissioning funds for a more expensive, environmentally friendly disposal method.

This process could result in radioactive wastewater being discharged into the river.