For those of you who live close to the Alamitos Bay Marina, or have a boat docked in the Marina, the following is the Basin 1 construction schedule.
Task: Dredge Basin 1
In order to remove the Mercury laden spoils and deliver them to the Port by June 30, the contractor will need to dredge 7-days a week, 24-hours a day. The process will include utilizing the “DB-24”, a 60 foot by 120 foot, 120-ton derrick barge affixed with a clamshell bucket. The contractor will dredge the Basin 1 area, adjacent to the Crab Pot Restaurant. The dredge area will be protected by a boom with silt fence, and dredge spoils will be deposited into two alternating dump scows, each with a 2,000 CY capacity.
An estimated 3,000 cubic yards of dredge spoils will be generated per 24-hour period. A dump scow barge will be transported out approximately every 4-6 hours through Alamitos Bay’s main channel to the Port of Long Beach’s Middle Harbor Project or to the LA2 offshore disposal site where the dredge spoils will be deposited. Both barges will be positioned/piloted and towed by a tugboat. At night, the area will be lit by lights on the working rigs.
Anticipated Dates: 6/14/2012 to 7/14/2012
Days/Times: 7 days a week, 24 hours per day.
Task: Drive Piles
Utilizing the DB-24, a 60 foot by 120 foot, 120 ton derrick barge and a pile driving hammer, piles will be driven into location at an approximate rate of eight piles per day.
Piles will arrive via Dutra’s Flat Barge which will be loaded off-site. Both barges will be positioned/piloted by tugboat.
Anticipated Dates: 7/16/2012 to 8/24/2012
Days/Times: M-F, 7:00am to 6:00pm
Task: Deliver/Assemble Floats
Floats will arrive by flatbed tractor-trailer truck that will travel over-night from Dixon, California. These trucks will be staged in the parking lot just outside the Marina Drive Construction Staging Area overnight. Trucks will be traveling from the 22 Freeway, exiting on Studebaker, turning right onto 2nd Street, left onto PCH, right onto Studebaker, right onto Marina Drive, and left into the parking lot.
Trucks will be offloaded one by one by crane starting at 7:00am and the last truck should be offloaded no later than 4:00pm. Each truck will make its way back to Dixon, California once it has been offloaded traveling left onto Marina Drive from the parking lot, right onto 2nd Street, left onto Studebaker, and then to the 22 Freeway. Once in the water, floats will be assembled at Gangway #34 of Basin 3 into long mainwalk dock sections. Once assembled, these sections will be floated across the channel to Basin 1 for final assembly/installation.
Anticipated Dates: 8/27/12 to 12/15/2012
Days/Times: M-F, 7:00am to 5:00pm
Task: Repair Seawall Along Basin 1
Waiting for low tide, crews will be cleaning out areas of the seawall in need of repair, placing filter fabric to keep concrete from seeping into the water, and then pour concrete into any voids that may exist. Concrete will arrive premixed in concrete trucks and will be routed to these voids by hose. Once repairs and dredging are complete, new 75lb +/- rocks will be added along the wall for reinforcement. Rock will be stored in a 50’x100’ pile in the Basin 1 parking lot until they are placed. Crews will be working from the land, on the water by small workboat, and a small dive team will be working under water as well.
Anticipated Dates: 8/26/12 to 12/16/12
Days/Times: M-F, 7:00am to 10:00pm (in order to workwithin low tide windows)
--From Long Beach City Councilman Gary DeLong's Office