DETROIT (AP) — U.S. Sens. Debbie Stabenow and Carl Levin of Michigan are asking Secretary of State John Kerry to intervene in a Canadian plan to store nuclear waste underground near Lake Huron.

Ontario Power Generation proposes a radioactive waste disposal facility at the Bruce nuclear power site in the city of Kincardine. If approved, it would house more than 200,000 cubic feet of waste about a mile from the lake.

In a letter Monday to Kerry, the Democratic senators say they're concerned how storing so much radioactive material that close to the lake would affect the environment and industries such as fishing and tourism.

They ask Kerry to urge the Canadian government to reconsider its plans.

The company says the underground rock formations would keep the waste safe for thousands of years.