(AREA) -- Michigan lawmakers have questions about a proposed Canadian underground nuclear waste repository near Lake Huron. A state Senate resolution that was introduced by Democratic Senator Hoon-Yung Hopgood of Taylor passed Wednesday. Lawmakers worry that the facility might affect the Great Lakes, and they want Congress to help ensure Michigan's concerns are fully resolved. Ontario Power Generation has proposed the facility. A public comment period for the company's environmental impact statement comes to an end on Friday. Hearings and other steps are expected before approval is considered. The storage facility for low- to medium-level nuclear waste would be built in Kincardine, across Lake Huron from the Michigan shoreline.