02_CUVA_224822_App_SD_Prefer_Alt_Drawings-MM20-1.pdf

This document is an alternative drawings appendix for a riverbank stabilization project along the Towpath Trail near Milepost 20 south. The file contains preferred and alternative engineering drawings and design specifications for stabilizing the riverbank as part of solicitation 140P2026R0093 issued by the National Park Service under the Department of the Interior. The drawings present multiple design approaches for riverbank protection, including options for erosion control, slope stabilization, and trail surface treatment to address ongoing riverbank degradation in this section of the Towpath Trail corridor.

The alternative drawings provide contractors with flexibility in proposing construction methodologies while maintaining project objectives for riverbank stability and trail integrity. The document serves as technical guidance for bidders to understand the scope of work, preferred design solutions, and acceptable alternative approaches that meet the stabilization requirements. Contractors are expected to reference these drawings when developing their proposals, cost estimates, and construction schedules for the riverbank stabilization work.