AMendment 0010 - Boston XYZ - Min File.zip

This document outlines a federal contract opportunity for the Boston Harbor Navigation Improvement Project-Phase 3 Rock Removal. The U.S. Army Corps of Engineers seeks to remove remaining material in the Boston Harbor Federal Navigation Project to achieve authorized project depths of -49 feet in the Main Ship Channel, Reserved Channel, and President Roads Anchorage. One limited area within the Main Ship Channel will be dredged to -42 feet. Contractors will be required to remove all material within the -49 foot contour limit and are allowed a 2-foot overdepth. The government will pay for side slopes at a 1 vertical foot to 1 horizontal foot ratio. The material to be removed primarily consists of rock with some ordinary and hard materials as overburden.