The East Bay Municipal Utility District in Oakland, Calif., awarded a $237-million contract to Flatiron for construction projects at two of the utility’s water treatment plants: the Upper San Leandro Water Treatment Plant, built in 1927, and the Sobrante Water Treatment Plant. Stantec Consulting Services will provide engineering services during construction for both plants, and Delve Underground will provide those services for specialized shoring at the Upper San Leandro facility.

The project will include upgrades and new construction, while preserving the existing drinking water supply, which services Oakland, San Leandro, San Lorenzo, Piedmont, Hayward and Castro Valley. Work will focus on the system’s flocculation and sedimentation basin, raw water control valve and chemical management safety improvements. Also included is replacing the below-grade chlorine contact basin; and replacing or rehabilitating elements of reclaim and solids handling systems, including tanks, pumps and pipelines. The district has a five-year capital improvement program with a planned $2.5-billion budget for fiscal years 2020-24.

OHLA USA

California Water Conveyance Improvements Awarded

OHLA USA is contractor under a $95-million contract for the Morena Conveyance North design-bid-build project in San Diego County. Work includes installation of a new 48-in.wastewater force main pipeline and a 30-in. welded steel pipe brine centrate conveyance pipeline, each spanning approximately 20,870 linear ft and requiring tunneling under San Clemente Canyon, Rose Canyon and the I-805 freeway. Substantial completion is expected for 2024.

Weeks Marine

New Jersey Storm Resilience Project Begins First Phase

Construction work began in March on the Union Beach Coastal Storm Risk Management Project, a five-contract, multiphase project covering 1.8 sq miles along the coast of Raritan Bay in New Jersey, with an expected 2030 completion date. Weeks Marine was awarded a $50-million contract by the U.S. Army Corps of Engineers, New York District and the New Jersey Dept. of Environmental Protection for phase 1 in July 2022. Work includes construction of a beach berm with planted dunes, crossovers for pedestrians and vehicles and two terminal groins. The expected completion date for this first phase is 2024.

APTIM

Ion Beam Facility at Los Alamos National Laboratory

Photo courtesy of Los Alamos National Laboratory

APTIM was awarded a $68-million task order contract in July by the U.S. Dept. of Energy Office of Environmental Management for deactivation, decommissioning and removal of the Ion Beam Facility at Los Alamos National Laboratory in New Mexico, covering a period up to 57 months. Set to begin in October, work at several areas of the facility also includes slab and foundation removal, waste disposition and site restoration. The lab, built in 1951 and in operation until 1999, is contaminated with hazardous materials including tritium and asbestos. The firm was among nine companies in 2020 awarded indefinite-delivery/indefinite-quantity contracts for environmental cleanup services at facilities across the country, covering a 10-year period and with a maximum value of $3 billion.