The City of Grand Marais is renewing the permit for its wastewater treatment facility, which discharges to Lake Superior. The facility is designed to treat 990,000 gallons per day. As part of the permit issuance, the city has applied for a variance from the mercury water quality standard due to the cost of treatment for mercury. The variance still requires the facility to work towards minimizing mercury sources, investigate mercury removal technologies, and comply with attainable limits for mercury. The final mercury limits must be met by permit expiration.
The event will be both in-person and online. It will start at 5:30 p.m. and run until the presentation is completed and questions are addressed, not to exceed one hour.