AECOM has been selected to play a pivotal role in one of the most ambitious environmental infrastructure initiatives in New York City, marking a major milestone in the city’s long-term effort to modernize its aging wastewater systems and improve water quality across its urban waterways. The company announced that Newtown Creek CSO Partners—a joint venture comprising AECOM, Parsons Corporation, and EPC Consultants Inc.—has been awarded a significant contract by the New York City Department of Environmental Protection to provide construction supervision services for the city’s first-ever combined sewer overflow (CSO) storage tunnel and pump station project.
This landmark project represents a transformative step forward in addressing one of the most persistent environmental challenges facing New York City: the discharge of untreated wastewater into local waterways during periods of heavy rainfall. The initiative specifically targets improvements at Newtown Creek, a heavily industrialized waterway that spans the boroughs of Brooklyn and Queens and has long been burdened by pollution. Notably, Newtown Creek is designated as a federal Superfund site, underscoring the urgency and importance of remediation efforts in the area.
Addressing a Longstanding Environmental Challenge
Combined sewer systems, which are common in older cities like New York, collect both stormwater runoff and sanitary sewage in the same pipes. During periods of intense rainfall or snowmelt, these systems can become overwhelmed, leading to combined sewer overflows that discharge untreated wastewater directly into nearby rivers, creeks, and harbors. These events not only degrade water quality but also pose risks to public health and aquatic ecosystems.
The Newtown Creek CSO storage tunnel project is designed to significantly mitigate these impacts by capturing and temporarily storing excess combined sewage during storm events. By preventing these overflows from entering the creek, the project will help improve water quality, restore ecological balance, and support ongoing remediation efforts tied to the Superfund designation.
Beverley Stinson, chief executive of AECOM’s global water business, emphasized the broader significance of the project, noting that reducing combined sewer overflows is essential not only for local environmental restoration but also for advancing global water sustainability goals. She highlighted how cities like New York can serve as models for tackling complex infrastructure challenges in the face of climate change, particularly as extreme weather events become more frequent and intense.
Scope and Technical Complexity of the Project
Under the terms of the contract, the Newtown Creek CSO Partners joint venture will oversee the construction of approximately 3.25 miles of underground tunnel infrastructure, along with several critical supporting facilities. These include storage and conveyance tunnels designed to capture excess wastewater, a tunnel dewatering pump station to manage stored flows, and connections to the Newtown Creek Wastewater Resource Recovery Facility, which will ultimately treat the captured sewage.
The scale and complexity of the project present unique engineering and logistical challenges. Constructing large-diameter tunnels beneath densely populated urban areas requires advanced tunneling techniques, precise planning, and careful coordination to minimize disruptions to surrounding communities and infrastructure. Additionally, the project must adhere to strict environmental and safety standards, given its proximity to a sensitive and historically polluted waterway.
Once completed, the system is expected to provide up to 50 million gallons of storage capacity. This substantial volume will enable the city to capture a significant portion of combined sewer flows during storm events, thereby reducing the frequency and volume of discharges into Newtown Creek. Over time, this is expected to contribute to measurable improvements in water quality and support the broader cleanup and restoration of the creek.
A Collaborative Effort with Lasting Impact
Sam Donelson, chief executive of AECOM’s U.S. East and Latin America region, described the project as a critical investment in the city’s environmental infrastructure and a major step forward in protecting Newtown Creek. He emphasized the joint venture’s extensive experience in managing complex urban tunneling programs and expressed pride in partnering with NYCDEP to deliver a solution that will generate lasting benefits for communities in Brooklyn and Queens.
The collaboration between AECOM, Parsons Corporation, and EPC Consultants Inc. brings together a diverse set of expertise in engineering, construction management, and infrastructure delivery. This multidisciplinary approach is essential for ensuring the successful execution of a project of this magnitude, particularly in a city as dynamic and densely built as New York.
The involvement of NYCDEP also reflects the agency’s ongoing commitment to modernizing the city’s water infrastructure. Through a series of long-term investments and strategic initiatives, NYCDEP aims to enhance system resilience, improve environmental outcomes, and ensure compliance with federal and state regulations governing water quality.
Advancing Sustainability and Climate Resilience
The Newtown Creek CSO storage tunnel project aligns closely with AECOM’s Sustainable Legacies strategy, which focuses on delivering infrastructure solutions that promote environmental sustainability, social equity, and economic development. By leveraging innovative engineering techniques and global best practices, the project demonstrates how infrastructure investments can directly contribute to cleaner waterways and more resilient urban environments.
In the context of climate change, the importance of such projects cannot be overstated. As cities face increasing risks from extreme weather events, including heavy rainfall and flooding, the need for robust and adaptable wastewater systems becomes ever more critical. By enhancing the capacity to manage stormwater and sewage flows, the CSO storage tunnel will help New York City better withstand these challenges while protecting public health and the environment.
Moreover, the project supports broader efforts to restore and revitalize urban waterways, which play a vital role in supporting biodiversity, recreational opportunities, and community well-being. Cleaner waterways can also drive economic benefits by attracting investment, tourism, and development in surrounding areas.
A Model for Future Infrastructure Projects
Beyond its immediate impact on Newtown Creek, the project serves as a model for other cities להתמודד similar challenges with aging infrastructure and environmental degradation. By demonstrating the effectiveness of large-scale CSO mitigation strategies, New York City is setting a precedent for how urban centers can address legacy issues while preparing for future demands.
The integration of advanced engineering solutions, collaborative project delivery, and a strong focus on sustainability highlights the potential for infrastructure projects to achieve multiple objectives simultaneously. From improving water quality and public health to enhancing climate resilience and supporting economic growth, the benefits of such initiatives extend far beyond their immediate scope.
As construction progresses, the Newtown Creek CSO storage tunnel project is expected to play a central role in transforming one of New York City’s most polluted waterways into a cleaner, healthier, and more resilient ecosystem. The involvement of AECOM and its joint venture partners underscores the importance of expertise and innovation in tackling complex infrastructure challenges.
Ultimately, the project reflects a broader commitment to environmental stewardship and sustainable development, both at the local and global levels. By investing in modern wastewater infrastructure, New York City is not only addressing the legacy of past pollution but also laying the foundation for a more sustainable future.
Through initiatives like this, AECOM continues to demonstrate its leadership in delivering infrastructure solutions that create lasting value for communities, protect natural resources, and contribute to a more resilient and sustainable world.
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