Z--Maintenance Dredging Projects at: U.S. Navy Submarine Base, Kings Bay, Camden County, Georgia (44 and 46-Foot Project) & Marine Corps Support Facility - Blount Island, Duval County, Florida (38-Foot Project)

Project work consist a Base and six options. Options A through E pertain to Kings Bay Inner Channel (KBIC) whereas Option F pertains to Marine Corps Terminal (MCT) only. For the base and the five other dredging options, this contract incorporates two feet of allowable overdepth throughout. The Base work will be at KBIC only and consists of dredging material from KBIC Station 25+000 to Station 48+175 to a 44-foot and 46-foot required depths as identified in the drawings. Additionally, maintenance dredging at the KBIC Site Six Operating Area - North to a 39-foot required depth. Base work also includes bird monitoring, stand by time and field cut weir riser boards. The placement of dredged material will be Big Crab Island Disposal Area (D/A-C) as shown on the plans. Option A work consists of maintenance dredging at KBIC Explosives Handling Wharves (EHW) to a 47-foot required depth. Option A work also includes Bird Monitoring. Option B is maintenance dredging of the south area of the KBIC Site Six Operating Area to a 45-foot required depth. Option B work also includes Bird Monitoring. Option C consists of maintenance dredging of the KBIC Refit Wharves to a 46-foot required depth. Option C work also includes Bird Monitoring. Option D requires removal of shoal material at the KBIC Dry Dock Caisson Gate Sill and Dry Dock Concrete Caisson Gate Mooring Facility to a 46-foot required depth. Option D work also includes Bird Monitoring. Option E consists of manufacturing an additional two-hundred (200) field cut weir riser boards as requested by the Contracting Officer. Option F consists of maintenance dredging at MCT between Station 00+00 to 56+09.1 to a 38-foot required depth. Option F's dredged material will be placed in the Dayson Upland Disposal Area (D/A-D) located across the St. Johns River Back Channel from the Marine Corps Terminal. Option F work also includes bird monitoring, turbidity and disposal monitoring, and stand by time. Kings Bay Naval Submarine Base (Subase) is located near St. Mary's, Camden County, Georgia, or five miles north of the Georgia/Florida Border and 28 miles north of Jacksonville International Airport (JAX). Access to the Subase is approximately 22 nautical miles from the Atlantic Ocean through the confluence of the St. Mary's and Amelia Rivers at Cumberland Sound and along the Atlantic Intracoastal Waterway (AIWW). The channel connecting the inshore waterways to the Subase is known as Kings Bay Inner Channel (KBIC) and is approximately 8.6 nautical miles west of the mouth of the St. Mary's Entrance (River Stations 00+000 to 48+250). The Marine Corps Facility on Blount Island (USMC-BI) is located approximately 8.0 miles northeast of downtown Jacksonville, Florida and nine miles west of the mouth of the St. Johns River. Blount Island is bordered to the north by St. Johns River and Fulton Cutoff Channel to the south.