ATT 3 PLANS.pdf

This file contains detailed engineering drawings and site plans for a dredging project at two locations within the Hiawatha National Forest Grand Island National Recreation Area near Munising, MI.

The plans show two dredging locations: Powell Point/Grand Island Landing and William's Landing, with corresponding elevation profiles, project site details, and spoils disposal sites. The dredging work involves achieving desired depths of 5-6 feet, with sheetpile walls and barge ramps at both locations. Powell Point includes a ferry office and parking area, while William's Landing features a deck and beach sand area. The plans specify exact coordinates and township locations (T47N R19W) for both sites, with disposal routes mapped to USFS Sand Pit (0.9 miles from William's Landing) and USFS Gravel Pit (10.7 miles from Powell Point via Au Train). The drawings include detailed elevation profiles showing existing and proposed lake bottom depths relative to Lake Superior's 602 ASL level.