MWH Constructors and Webcor Builders Awarded $939MM Contract from the San Francisco Public Utilities Commission

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Water pollution control plant project is among the first to apply the Cambi Thermal Hydrolysis Process

SAN FRANCISCO / BROOMFIELD, Colo., August 2, 2017 – MWH Constructors and Webcor Builders, a construction joint venture, was awarded a $939 million contract by the San Francisco Public Utilities Commission (SFPUC) to serve as construction manager/general contractor (CM/GC) for the Southeast Water Pollution Control Plant Biosolids Digester Facilities Project. MWH Constructors is a leading global construction firm focused on water and energy and Webcor is San Francisco-headquartered general and specialty contractor with decades of experience building in the city.

The Southeast Water Pollution Control Plant (SEP) was built in 1952 and is SFPUC’s largest wastewater treatment facility, treating 80 percent of San Francisco’s sewage and storm water flows. The Biosolids Digester Facilities Project (BDFP) aims to replace existing digester facilities with new, expanded, reliable, modernized and relocated facilities, as well as improve energy recovery and maximize control of odors.

“It is a privilege to be selected with our partner Webcor Builders by the San Francisco Public Utilities Commission for this project and we look forward to delivering a more modern and reliable high-performing biosolids facility to the City,” said Blair Lavoie, president of MWH Constructors. “Our partnership with Webcor Builders combines unique and relevant experience in water and wastewater facilities and integrates the complementary expertise and resources of two leading general contractors to provide the highest quality service and best partner for the sustainable development of San Francisco’s water infrastructure and community.”

The BDFP is one of the first projects in the U.S. to use the Cambi Thermal Hydrolysis Process (CambiTHP™). The CambiTHP™ will enable the new facilities to produce higher quality biosolids, capture and treat odors more effectively, and maximize biogas utilization and energy recovery to produce heat, steam and energy.

Construction is expected to begin in summer 2018 with the facility becoming fully operational in summer 2025. The project will be constructed in two parts to allow for continued use of the facilities. Part one includes the demolition and site preparation of the eastern portion of the SEP and existing asphalt plant, and construction of the new facilities on the site. Part two involves the demolition of the Central Shops and western portion of the SEP, with final completion of the new Biosolids Digester Facility following.

“We are pleased to work with MWH Constructors on a project that supports upgrades to aging infrastructure and increased efficiency for the San Francisco Public Utilities Commission,” said Jes Pedersen, CEO of Webcor Builders. “Our complimentary expertise and project experience are well-aligned to meet the needs of a growing population while maintaining a commitment to the highest sustainability standards.”

As the third largest municipal utility in California, SFPUC provides more than 2.6 million residential, commercial and industrial customers with high quality, efficient and reliable water services. The BDFP is part of the Sewer System Improvement Program (SSIP), a 20-year, multi-billion-dollar citywide investment to upgrade aging sewer systems that aims to ensure a reliable, sustainable and seismically safe sewer system into the future.

About Webcor Builders
Webcor is a premier provider of commercial construction services, known for its innovative and efficient approach to construction, wide range of experience, cost effective design/build methodology, skill in concrete construction and expertise in building landmark projects. Webcor’s mission is to build structures of superior quality with integrity, continuously improve its processes through employing the best talent in the industry, and add social and economic value to its communities. Founded in 1971 and repeatedly honored as one of the Greenest Builders in California, Healthiest Employers, Top Corporate Philanthropists and largest California construction firms, Webcor has offices throughout the state in San Francisco, Alameda, Los Angeles and San Diego, as well as in Honolulu, Hawaii. More information about the company is available via its website or by following the company on LinkedIn, Facebook, Twitter and Instagram.

About MWH Constructors
MWH Constructors, Inc. is a wholly owned subsidiary of Stantec Inc., a publicly traded corporation. MWH Constructors is a project delivery company with a focus on water and energy operating globally. With the goal of delivering maximum value to clients and local communities, MWH Constructors offers single-source construction services via a multi-disciplined team of professionals, a range of alternative delivery methods, industry-leading pre-construction services and safety practices. MWH Constructors is working toward a commitment to Building a Better World. For more information, visit or connect with us on Twitter @mwhglobal and Facebook

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