Specs 042726.pdf

This is a comprehensive specifications and technical documentation package for maintenance dredging of the New York and New Jersey Channels at the Seguine/Ward/Outerbridge Reaches of the Federal Navigation Project.

The project requires removal of approximately 330,000 cubic yards of material to a depth of -35 feet Mean Lower Low Water (MLLW) plus 2 feet allowable overdredge, with placement at the Historic Area Remediation Site (HARS) in the Atlantic Ocean. The dredged material consists primarily of silt and sand and has been tested and approved as Category I remediation material suitable for ocean placement under 40 CFR 227.6 and 227.27, with detailed bioaccumulation and toxicity evaluations provided across three separate reaches. The work requires a mechanical dredge with an environmental clamshell bucket, ocean-going bottom-dumping barges, tugboats, and survey vessels. The contractor must maintain an integrated production rate of at least 8,000 cubic yards per calendar day and commence work within five calendar days of notice to proceed. New Jersey and New York State Water Quality Certificates impose significant operational restrictions, including: prohibition of dredging March 1-July 31 in certain reaches, use of closed clamshell environmental buckets with specific lift speeds (2 feet per second maximum), 24-hour sediment settling requirements before decanting, total suspended solids limits of 30 mg/L for discharge water, and deployment of Protected Species Observers from September 1-October 31 for sturgeon protection. The solicitation number is W912DS-26-B-A014, issued by the U.S. Army Corps of Engineers New York District, with plans and specifications available in April 2026, bid opening in May 2026, and anticipated contract award in late June 2026 for work commencing September 2026.