USACE SPK DBB Construction - MOTCO Holding Pad and Berm Repair Military Ocean Terminal Concord (MOTCO), Concord, CA

Project involves excavation; installation of wire mesh to protect rodent burrows; increasing the heights of existing explosives safety berms; and other items required to provide a complete and usable system. Several existing storm drain pipes will be extended to assist with accomplishing this. Modifications to the lightning protection system are not included. Existing earth and grass will be removed from the existing berms. Existing swales, culverts, lights, and concrete pads will be protected in place. Existing chain-link fencing will need to be removed and replaced on the berms. Removal of these foundations will require removal and replacement of some of the pavement for the existing access roadways. Existing soil behind the existing retaining walls will also need to be removed and replaced by engineered fill. Material for additional fill will be provided from the removed soil for clearing and grubbing as well as from designated borrow soil onsite.