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Narragansett Bay Commission CSO Program, Phase III

The largest public works project in Rhode Island history

  • 93%

    Annual CSO Capture

  • $1B

    Capital Budge

  • 2.2

    Miles 30-Ft Diameter Tunnel

  • Pawtucket, Rhode Island

    Pawtucket, Rhode Island

Designing major underground facilities to protect water resources at the surface

The Narragansett Bay Commission (NBC) wanted to re-evaluate their 1998 Phase III Combined Sewer Overflow (CSO) control plan study, which improves the water quality in Narragansett Bay. Since 2014, we’ve been working with NBC on the CSO—the largest public works project in Rhode Island history. Using advanced analytics with a hydraulic model, we optimized the selected alternative while providing a new approach that met the original CSO control criteria without introducing additional risk. The approach focused on analyzing the overall outcome for the system, by examining standard operating procedures and the long-term legacies, costs, impact on future maintenance, and ownership. 

In 2017, we began program management and design services, which included the 30-foot, 2.2-mile-long Pawtucket Tunnel. The rock tunnel, located at depth ranges of 115 to 155 feet below grade, stores 58.5 million gallons of combined sewer overflows. We developed a tunnel dewatering pumping strategy to maximize CSO capture and treatment while minimizing pump sizes and run times for a more effective and efficient pumping strategy—at a reduced cost to NBC ratepayers.

The tunnel project is under construction, and our final design of the 34.5 million gallons per day (MGD) Pawtucket Tunnel Dewatering Pump Station is nearing completion. We continue to provide program management, design, and construction management services.

Meet Our Team

Melissa Carter, Vice President, Director of Project Management

My focus is to drive project management best practices and grow our reputation for project delivery excellence in the communities we serve.
Melissa Carter Vice President, Director of Project Management Read More

Christopher Feeney, Senior Associate, Civil Engineer

I enjoy the challenge of my work–identifying a problem and developing a viable solution to protect public health and the environment.
Christopher Feeney Senior Associate, Civil Engineer Read More

David VanHoven, Senior Principal

We aren’t just providing a service, we’re facilitating human life: making safe drinking water, treating waste, and preventing flooding.

Julian Prada, Senior Principal

I feel passionate about the benefits that the projects I work on bring to the community.

Douglas Reed, Vice President, Chief Electrical Engineer, Water

Our clients may identify their issues as problems. Our team treats their issues as opportunities for creative solutions.
Douglas Reed Vice President, Chief Electrical Engineer, Water Read More

Brian Shea, Senior Principal

A good team leader knows how to delegate and can recognize the strength of each coworker. Building the right team means project success.

Gavin Gilchrist, Vice President, Program Development

Stay curious and ask yourself why you are doing something—always look at things from the perspective of others.
Gavin Gilchrist Vice President, Program Development Read More

Melissa McDaniel, Principal, Program Controls Manager

My goal is to implement user friendly controls systems that track all of my clients' desired metrics.
Melissa McDaniel Principal, Program Controls Manager Read More

Melissa Carter

Vice President, Director of Project Management

Christopher Feeney

Senior Associate, Civil Engineer

David VanHoven

Senior Principal

Julian Prada

Senior Principal

Douglas Reed

Vice President, Chief Electrical Engineer, Water

Brian Shea

Senior Principal

Gavin Gilchrist

Vice President, Program Development

Melissa McDaniel

Principal, Program Controls Manager

We're better together

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    Partner with us today to change how tomorrow looks. You’re exactly what’s needed to help us make it happen in your community.

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  • Design your career

    Work with passionate people who are experts in their field. Our teams love what they do and are driven by how their work makes an impact on the communities they serve.

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Build Version: 2.5.0.8
Build Date: 2022-43-28 08:43:59