B08_Solicitation_-_Drawings_PIRO_226930.pdf

This file is a comprehensive set of solicitation drawings for the Munising Falls Trail Rehabilitation project at Pictured Rocks National Lakeshore in Munising, Michigan. The drawings depict the existing site conditions photographed in August and November 2023, and provide detailed plans for trail demolition, reconstruction, grading, and erosion control across three contract line items totaling approximately 6,850 linear feet of project work. The trail traverses variable terrain alongside Munising Creek and includes removal of existing asphalt pavement, wood bridges, concrete abutments, and various structures, with salvage and reuse of specified materials including benches, signs, and stone retaining walls.

The drawings establish detailed specifications for erosion and sediment control, requiring the contractor to obtain an Erosion and Sedimentation Permit from Alger County and implement comprehensive Best Management Practices (BMPs) to control stormwater volume, velocity, and pollutant discharge within 500 feet of the creek. Key construction requirements include a rock construction entrance maintained throughout the project, stabilization of disturbed areas within 14 days using inert materials, preservation of existing vegetation and topsoil where practical, protection of historic corduroy road remnant logs listed on the National Historic Register, and final stabilization with 70% vegetative cover density. The proposed work includes constructing 6-foot-wide concrete walks on grades and 6-foot-wide boardwalks on elevated sections with various slope percentages and specific elevation data provided in profile and cross-section drawings. Detailed specifications for concrete pavement, wire mesh reinforcement, boardwalk foundations, and drainage infrastructure including a 16-foot corrugated HDPE pipe installation are shown, with coordination required between demolition sequencing, boardwalk foundation installation, and slope restoration measures.