C04b Attachment 2 Drawings GView Wall Repair 1240BH26Q0029.pdf

This document is a Statement of Work and project description for the Mesa Falls Grandview Overlook Retaining Wall Repair project located in Caribou-Targhee National Forest near Island Park, Idaho.

The project involves repair and rehabilitation of a deteriorated dry-stacked stone retaining wall at the Mesa Falls Grandview Overlook. The work includes mortar work to address failed and dislodged mortar joints between stones, missing south end wall stone repair, wall top detail work including installation of a new basalt wall cap, and removal of damaged or unstable stone elements. Specific mortar work requirements include repair of failed capstone mortar joints, repointing of all dislodged joints, replacement of missing mortar, and installation of temporary weather protection. Stone work details show that the wall has historic significance and requires careful handling to preserve its structural integrity. The project involves removal and repair of all failed mortar joints, repointing with appropriate materials, and installation of a new cap system featuring a 23-inch basalt wall cap with proper drainage and waterproofing to prevent future deterioration. The work scope encompasses site preparation, material staging, temporary erosion control measures, and final cleanup. The U.S. Department of Agriculture Forest Service, Intermountain Region 4 Engineering division is the contracting agency responsible for this repair project.