The work consists of the fabrication and installation of three (3) bat-compatible structures. SITE 1, DUTCH HILL MINE ADIT Task #1: Dutch Hill Mine Adit (76816) – BAT COMPATIBLE CLOSURE Dutch Hill Mine is a stable adit, with some sloughed material in the portal. A bat-compatible closure with removable bar shall be installed inside the adit, with a sill plate with concrete foundation that allows water drainage. Some portal material shall be removed. Access is directly off an improved dirt Forest Service road. SITE 2, BOOMERANG ADIT Task #2: Boomerang Adit (76817) – BAT COMPATIBLE CLOSURE Boomerang adit is a stable adit. A bat-compatible closure with removable bar shall be installed inside the adit with a concrete sill that allows water drainage. Rock area above portal may need additional shoring. The access to the adit is just off an improved dirt Forest Service road, on the lower left road spike 100 feet down a foot trail. The trail to the mine site must be accessed on foot. SITE 3, LOGAN ADIT Task #3: Logan Tunnel Adit (76845) – BAT COMPATIBLE CLOSURE Logan Tunnel is a stable adit, with some sloughed material in the portal. A bat-compatible closure with removable bar shall be installed inside the adit, with a sill plate with concrete foundation that allows water drainage. Some portal material shall be removed. Access is directly off an improved dirt Forest Service road.