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Denver Metro Wastewater Reclamation District Northern Treatment Plant Program

Metro Wastewater Reclamation District
Denver, Colorado

Project Overview

Award-winning program through innovation in progressive design-build delivery

As part of its goal of expanding wastewater service to existing and future customers in the northeast portion of the metropolitan Denver area, the Metro Wastewater Reclamation District embarked on a $475 million capital improvements program called the Northern Treatment Plant (NTP) Program. The NTP Program consists of four projects: the reclamation and preparation of the treatment plant site; the design and construction of a 24-mgd wastewater treatment facility; a 7-mile gravity interceptor; and an 11-mile pressurized force main.

Over a 8-year period, Carollo served as the Owner’s Advisor for the NTP Program. In this role, the Carollo team provided comprehensive program management and engineering services including planning, procurement, and facilities implementation. This strategic partnership rendered resources, expertise, and on-site representatives as an extension of District staff. Key areas in which the Carollo team provided support included:

  • Program-Wide Planning: Developed a program vision and goals, including program management and operational strategies.
  • Project Delivery Analysis: Evaluated different project packaging and delivery methods with District staff to identify the most appropriate method for each project within the NTP Program. Selected delivery approaches included design-bid-build and progressive design-build.
  • Program Controls: Developed systems for monitoring budget and schedule; assigning and monitoring risk, and validating design-build GMPs; and assisting with implementation of the Owner’s document control system.
  • Conceptual Design: Developed design definition for all aspects of the Program’s projects.
  • Communications Support: Assisted the District with execution of their Communication Plan, including assistance with internal and public outreach.
  • Land and Easement Acquisition Assistance: Assisted the Owner with the purchase of land and easements necessary for construction of the NTP and associated pipelines and developed a tool for tracking the status of individual parcels.
  • Permitting: Provided planning and permitting support for the treatment facility and transmission systems and developed tools for tracking the status of individual permits.
  • Business Integration: Prepared a management and business planning for the integration of the satellite facility into existing District organizational and operating procedures.

Results and Highlights

Program was the result of 35-years of wastewater planning for the northeastern Denver metropolitan area that embodied regional, intergovernmental, and regulatory cooperation.

Eliminated nine lift stations through a consolidated approach to regional wastewater management.

$475M program for the development of a 7-mile regional transmission interceptor system and a 24-mgd advanced wastewater treatment facility.

The advanced wastewater treatment facility is one of Colorado’s largest and most complex wastewater treatment projects to be contracted by collaborative project delivery.

Program was delivered on-schedule and $60M under budget.

Project Awards and Accolades

2018 Excellence in Environmental Engineering and Science, Grand Prize

American Academy of Environmental Engineers and Scientists (AAEES)

2017 National Award of Excellence

Design-Build Institute of America (DBIA)

2017 National Award of Merit

Design-Build Institute of America (DBIA)

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